--- /dev/null
+#
+# Copyright (c) 1991 The Regents of the University of California.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms are permitted provided
+# that: (1) source distributions retain this entire copyright notice and
+# comment, and (2) distributions including binaries display the following
+# acknowledgement: ``This product includes software developed by the
+# University of California, Berkeley and its contributors'' in the
+# documentation or other materials provided with the distribution and in
+# all advertising materials mentioning features or use of this software.
+# Neither the name of the University nor the names of its contributors may
+# be used to endorse or promote products derived from this software without
+# specific prior written permission.
+# THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
+# WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
+# MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+#
+# @(#)Config.generic 5.5 (Berkeley) 3/1/91
+#
+
+# This is the configuration file for building all of
+# telnet/telnetd/libtelnet. If you want to add your
+# own local configuration for a specific machine that
+# is already listed here, it is best to create a new
+# file called "Config.local", and put the definitions
+# there. If you are adding definitions for a new system
+# type, you can add them here. In this case, please send
+# the new definition, and any changes you have to make to
+# the code, back to "dab@cray.com" so that your changes
+# can be put into the next release.
+#
+# Each definition must have the form:
+#
+# <target>:
+# make -f Makefile.generic ${WHAT} \
+# <definitions>
+
+# DEFINES=
+#
+# Variables to be defined when actually compiling the source. Defined
+# as: DEFINES="-D<var> -D<var2> ... -D<varn>"
+#
+# TELNET/TELNETD CONFIGURATION
+#
+# LINEMODE Turns on support in telnetd for the linemode option.
+# (Linemode is always on in the client).
+#
+# KLUDGELINEMODE Define this to get the kludged up version of linemode
+# that was in 4.3BSD. This is a good thing to have
+# around for talking to older systems. This has no
+# effect on telnetd if LINEMODE has not been defined.
+#
+# DIAGNOSTICS Turns on diagnostic code in telnetd; adds extra
+# logic and checks, and debuging output if started
+# with the -D option.
+#
+# NO_URGENT Define this if you don't want telnetd to send
+# IAC DM in urgent mode when the pty output queue
+# is flushed.
+#
+# GENERATE_GA Turns on code to allow the generation of Go Ahead(GA)
+# if the server is WONT SGA. This code is imprecise,
+# it generates the GA when two seconds have elapsed
+# and no input or output has occurred.
+#
+# AUTHENTICATION Enable the AUTHENTICATION option.
+#
+# ENCRYPTION Enable the ENCRYPT option.
+#
+# KRB4 Enable Kerberos Version 4 Authentication code
+# in libtelnet/libtelnet.a
+#
+# KRB5 Enable Kerberos Version 5 Authentication code
+# in libtelnet/libtelnet.a
+#
+# SIMPLE_AUTH
+#
+# DES_ENCRYPTION Enable DES encryption/decryption, requires
+# getting a the initial key from Kerberos. This
+# works with both Kerberos Version 4 and 5.
+#
+# LOCAL SYSYTEM PARAMATERS
+#
+# TERMCAP Define this if your system is termcap based,
+# otherwise a terminfo based system is assumed.
+#
+# SYSV_TERMIO Use the System V termio structure. (implies USE_TERMIO)
+#
+# NO_CC_T Define this if your termio.h file does not have
+# a typedef for cc_t.
+#
+# USE_TERMIO Define this if you have the POSIX termios structures.
+# This code works under the BSD 4.4 terminal driver.
+#
+# HAS_GETTOS Define this if you have the setsockopt() option for
+# setting the IP Type Of Service bits, (IP_TOS) and
+# you have the gettosbyname() function.
+#
+# NEWINIT Turns on the new init code for UNICOS systems.
+#
+# STREAMS This system needs <sys/stream.h> for <sys/tty.h>
+# (Sun 4.0.3)
+#
+# FILIO_H This system should use <sys/fileo.h> instead
+# of <sys/ioctl.h> (Sun 4.0.3)
+#
+# HAVE_fd_set This system has a typedef for fd_set, but does
+# not have FDSET() defined.
+#
+# NO_STRING_H If you don't have <string.h>, but have <strings.h>
+#
+# NO_LOGIN_P If /bin/login doesn't understand the "-p"
+# (preserve environment) option.
+#
+# STREAMS If the system has streams; causes <sys/stream.h>
+# to be included instead of <sys/tty.h>
+#
+# MUST_ALIGN If !KRB & !HAVE_KRB4_DES_LIB and your words
+# must be word aligned.
+#
+# STREAMSPTY Use /dev/ptmx to get a clean pty. Uses
+# streams packet mode rather than Berkeley.
+# Appropriate for SVr4 derivatives.
+#
+# UTMPX System has /etc/utmpx as well as /etc/utmp.
+# Use makeutx and modutx to update utmp/x and wtmp/x.
+# Appropriate for SVr4 derivatives.
+
+# LIB_OBJ=
+# This is a list of object files that are needed but are not in
+# the standard C library.
+#
+# strcasecmp.o If you don't have strncasecmp(3)
+# strdup.o If you don't have strdup(3)
+# setenv.o If you don't have setenv(3) and unsetenv(3)
+# setsid.o If you don't have the POSIX setsid() call
+# strerror.o If you don't have strerror(3)
+# strftime.o If you don't have strftime(3)
+# getopt.o If you don't have getopt(3)
+# herror.o If you don't have herror(3)
+# gettytab.o If you can get gettytab.c from getty source.
+# getent.o If you can't get gettytab.c
+# kerberos.o If you have Kerberos Version 4
+# kerberos5.o If you have Kerberos Version 5
+# mem.o If you don't have mem*(3) routines.
+
+# LIB_SRC=
+# This is a list of source modules for specificed in LIB_OBJ.
+# This information is used by make for checking dependencies.
+
+
+# LIBS=
+# This is a list of libraries to be included. This will always
+# include the telnet library, and will also include either -lcurses
+# or -ltermcap, -lutil for 4.4bsd, and -lnet for UNICOS5.0 and earlier.
+# Also -lkrb & -ldes if Kerberos.
+
+# LIBPATH=
+# This is a list of the paths to all the libraries listed in LIBS.
+# This information is used by make for checking dependencies.
+# Don't forget libc.a
+
+# VPATH=
+# Directory where gettytab.c can be found, if you have it.
+
+# LIBEXEC=
+# Directory where the telnetd executable should be installed.
+
+# LCCFLAGS=
+# Local flags for ${CC} (like -O)
+
+# AR=
+# Name of "ar" program, usually just "ar".
+
+# ARFLAGS
+# Flags to pass to ${AR}
+
+# RANLIB
+# Name of "ranlib" program, set it to "NONE" if you don't
+# have a "ranlib".
+
+all:
+ @echo "you must specify what type of system you are on,"
+ @echo "or modify the makefile for your system."
+ @echo "Known system types are:"
+ @echo " 4.4bsd 4.3reno 4.3tahoe 4.3bsd"
+ @echo " unicos5.0 unicos5.1 unicos6.0 unicos6.1 unicos7.0 unicos8.0"
+ @echo " sun3.5 sun4.0 sun4.0.3c sun4.1 sol2.0"
+ @echo " dynix3.0.12 dynix3.0.17"
+ @echo " ultrix3.1 ultrix4.0"
+ @echo " next1.0"
+
+4.4bsd:
+ make -f Makefile.generic ${WHAT} \
+ LIBS="-lutil -ltermcap ../libtelnet/libtelnet.a" \
+ LIBPATH="/lib/libc.a /usr/lib/libtermcap.a \
+ ../libtelnet/libtelnet.a" \
+ DEST=${DESTDIR}/usr/bin \
+ DEFINES=${ODEFS}"-DLINEMODE -DTERMCAP -DKLUDGELINEMODE \
+ -DDEFAULT_IM='\"\r\n4.4 BSD UNIX (%h) (%t)\r\n\r\r\n\r\"' \
+ -DUSE_TERMIO -DDIAGNOSTICS" \
+ INCLUDES="-I.." \
+ LIB_OBJ="gettytab.o" \
+ LIB_SRC="gettytab.c" \
+ AR=ar ARFLAGS=cq RANLIB=ranlib \
+ VPATH=/usr/src/libexec/getty \
+ LIBEXEC=${DESTDIR}/usr/libexec \
+ CC="${CC}" LCCFLAGS="-O"
+
+4.3reno:
+ make -f Makefile.generic ${WHAT} \
+ LIBS="-lutil -ltermcap ../libtelnet/libtelnet.a" \
+ LIBPATH="/lib/libc.a /usr/lib/libtermcap.a \
+ ../libtelnet/libtelnet.a" \
+ DEST=${DESTDIR}/usr/bin \
+ DEFINES=${ODEFS}"-DLINEMODE -DTERMCAP -DKLUDGELINEMODE \
+ -DDEFAULT_IM='\"\r\n4.3BSD-Reno UNIX (%h) (%t)\r\n\r\r\n\r\"' \
+ -DUSE_TERMIO -DDIAGNOSTICS" \
+ INCLUDES="-I.." \
+ LIB_OBJ="gettytab.o" \
+ LIB_SRC="gettytab.c" \
+ AR=ar ARFLAGS=cq RANLIB=ranlib \
+ VPATH=/usr/src/libexec/getty \
+ LIBEXEC=${DESTDIR}/usr/libexec \
+ CC="${CC}" LCCFLAGS="-O"
+
+4.3tahoe:
+ @echo $@ is untested... it may or may not work..."
+ make -f Makefile.generic ${WHAT} \
+ LIBS="-ltermcap ../libtelnet/libtelnet.a" \
+ LIBPATH="/lib/libc.a /usr/lib/libtermcap.a \
+ ../libtelnet/libtelnet.a" \
+ DEST=${DESTDIR}/usr/bin \
+ DEFINES=${ODEFS}"-DTERMCAP -DKLUDGELINEMODE \
+ -DDEFAULT_IM='\"\r\n4.3BSD-Tahoe UNIX (%h) (%t)\r\n\r\r\n\r\"'\
+ -DDIAGNOSTICS" \
+ INCLUDES="-I.." \
+ LIB_OBJ="strdup.o setsid.o strftime.o gettytab.o" \
+ LIB_SRC="strdup.c setsid.c strftime.c gettytab.c" \
+ AR=ar ARFLAGS=cq RANLIB=ranlib \
+ VPATH=/usr/src/etc/getty \
+ LIBEXEC=${DESTDIR}/etc \
+ CC="${CC}" LCCFLAGS="-O"
+
+4.3bsd:
+ @echo $@ is untested... it may or may not work..."
+ make -f Makefile.generic ${WHAT} \
+ LIBS="-ltermcap ../libtelnet/libtelnet.a" \
+ LIBPATH="/lib/libc.a /usr/lib/libtermcap.a \
+ ../libtelnet/libtelnet.a" \
+ DEST=${DESTDIR}/usr/bin \
+ DEFINES=${ODEFS}"-DTERMCAP -DKLUDGELINEMODE \
+ -DDEFAULT_IM='\"\r\n4.3BSD UNIX (%h) (%t)\r\n\r\r\n\r\"' \
+ -DDIAGNOSTICS" \
+ INCLUDES="-I.." \
+ LIB_OBJ="strdup.o setsid.o strftime.o \
+ gettytab.o getopt.o herror.o" \
+ LIB_SRC="strdup.c setsid.c strftime.c \
+ gettytab.c getopt.c herror.c" \
+ AR=ar ARFLAGS=cq RANLIB=ranlib \
+ VPATH=/usr/src/etc/getty \
+ LIBEXEC=${DESTDIR}/etc \
+ CC="${CC}" LCCFLAGS="-O"
+
+unicos8.0:
+ make -f Makefile.generic ${WHAT} \
+ LIBS="-lcurses -L../libtelnet -ltelnet -lkrb -ldes" \
+ LIBPATH="/lib/libc.a /usr/lib/libcurses.a \
+ ../libtelnet/libtelnet.a \
+ /usr/lib/libkrb.a /usr/lib/libdes.a" \
+ DEST=${DESTDIR}/usr/ucb \
+ DEFINES=${ODEFS}"-Dvfork=fork -Dsignal=bsdsignal \
+ -DLINEMODE -DKLUDGELINEMODE \
+ -DSYSV_TERMIO -DHAS_GETTOS \
+ -D_ANSI_PROTO \
+ -DDEFAULT_IM='\"\r\nCray UNICOS 8.0 (%h) (%t)\r\n\r\r\n\r\"' \
+ -DDIAGNOSTICS" \
+ AR=bld ARFLAGS=cq RANLIB=NONE \
+ LIBEXEC=${DESTDIR}/etc \
+ INCLUDES="-I.." \
+ LIB_OBJ="getent.o" \
+ LIB_SRC="getent.c" \
+ CC="${CC}" LCCFLAGS="-O"
+
+unicos7.0 unicos7.C:
+ make -f Makefile.generic ${WHAT} \
+ LIBS="-lcurses -L../libtelnet -ltelnet -lkrb -ldes" \
+ LIBPATH="/lib/libc.a /usr/lib/libcurses.a \
+ ../libtelnet/libtelnet.a \
+ /usr/lib/libkrb.a /usr/lib/libdes.a" \
+ DEST=${DESTDIR}/usr/ucb \
+ DEFINES=${ODEFS}"-Dvfork=fork -Dsignal=bsdsignal \
+ -DLINEMODE -DKLUDGELINEMODE \
+ -DSYSV_TERMIO -DHAS_GETTOS \
+ -DDEFAULT_IM='\"\r\nCray UNICOS 7.0 (%h) (%t)\r\n\r\r\n\r\"' \
+ -DDIAGNOSTICS" \
+ AR=bld ARFLAGS=cq RANLIB=NONE \
+ LIBEXEC=${DESTDIR}/etc \
+ INCLUDES="-I.." \
+ LIB_OBJ="getent.o" \
+ LIB_SRC="getent.c" \
+ CC="${CC}" LCCFLAGS="-O"
+
+unicos6.1:
+ make -f Makefile.generic ${WHAT} \
+ LIBS="-lcurses -L../libtelnet -ltelnet" \
+ LIBPATH="/lib/libc.a /usr/lib/libcurses.a \
+ ../libtelnet/libtelnet.a" \
+ DEST=${DESTDIR}/usr/ucb \
+ DEFINES=${ODEFS}"-Dvfork=fork -Dsignal=bsdsignal \
+ -DKLUDGELINEMODE -DUSE_TERMIO -DHAS_GETTOS \
+ -DLINEMODE -DSYSV_TERMIO -DNEWINIT \
+ -DNO_LOGIN_F -DNO_LOGIN_P \
+ -DAUTHENTICATION -DENCRYPTION \
+ -DDEFAULT_IM='\"\r\nCray UNICOS 6.1 (%h) (%t)\r\n\r\r\n\r\"' \
+ -DDIAGNOSTICS" \
+ AR=bld ARFLAGS=cq RANLIB=NONE \
+ LIBEXEC=${DESTDIR}/etc \
+ INCLUDES="-I.." \
+ LIB_OBJ="getent.o" \
+ LIB_SRC="getent.c" \
+ CC="${CC}" LCCFLAGS="-O"
+
+unicos6.0:
+ make -f Makefile.generic ${WHAT} \
+ LIBS="-lcurses -L../libtelnet -ltelnet" \
+ LIBPATH="/lib/libc.a /usr/lib/libcurses.a \
+ ../libtelnet/libtelnet.a" \
+ DEST=${DESTDIR}/usr/ucb \
+ DEFINES=${ODEFS}"-Dvfork=fork -Dsignal=bsdsignal \
+ -DKLUDGELINEMODE -DUSE_TERMIO -DHAS_GETTOS \
+ -DLINEMODE -DSYSV_TERMIO -DNEWINIT \
+ -DNO_LOGIN_F -DNO_LOGIN_P \
+ -DAUTHENTICATION -DENCRYPTION \
+ -DDEFAULT_IM='\"\r\nCray UNICOS 6.0 (%h) (%t)\r\n\r\r\n\r\"' \
+ -DDIAGNOSTICS" \
+ AR=bld ARFLAGS=cq RANLIB=NONE \
+ LIBEXEC=${DESTDIR}/etc \
+ INCLUDES="-I.." \
+ LIB_OBJ="getent.o" \
+ LIB_SRC="getent.c" \
+ CC="${CC}" LCCFLAGS="-O"
+
+unicos5.1:
+ make -f Makefile.generic ${WHAT} \
+ LIBS="-lnet -lcurses -L../libtelnet -ltelnet" \
+ LIBPATH="/lib/libc.a /usr/lib/libcurses.a \
+ ../libtelnet/libtelnet.a" \
+ DEST=${DESTDIR}/usr/ucb \
+ DEFINES=${ODEFS}"-Dvfork=fork -Dsignal=sigset \
+ -DKLUDGELINEMODE -DSYSV_TERMIO -DNO_CC_T \
+ -DUNICOS5 -DLINEMODE -DSYSV_TERMIO \
+ -DNEWINIT -DNO_LOGIN_F -DNO_LOGIN_P \
+ -DAUTHENTICATION -DENCRYPTION \
+ -DDEFAULT_IM='\"\r\nCray UNICOS 5.1 (%h) (%t)\r\n\r\r\n\r\"' \
+ -DDIAGNOSTICS" \
+ INCLUDES="-I.." \
+ LIB_OBJ="getent.o strerror.o setsid.o strftime.o" \
+ LIB_SRC="getent.c strerror.c setsid.c strftime.c" \
+ AR=bld ARFLAGS=cq RANLIB=NONE \
+ LIBEXEC=${DESTDIR}/etc \
+ CC="${CC}" LCCFLAGS="-O"
+
+unicos5.0:
+ make -f Makefile.generic ${WHAT} \
+ LIBS="-lnet -lcurses -L../libtelnet -ltelnet" \
+ LIBPATH="/lib/libc.a /usr/lib/libcurses.a \
+ ../libtelnet/libtelnet.a" \
+ DEST=${DESTDIR}/usr/ucb \
+ DEFINES=${ODEFS}"-Dvfork=fork -Dsignal=sigset \
+ -DKLUDGELINEMODE -DSYSV_TERMIO -DNO_CC_T \
+ -DUNICOS5 -DUNICOS50 -DLINEMODE -DSYSV_TERMIO \
+ -DNEWINIT -DNO_LOGIN_F -DNO_LOGIN_P \
+ -DAUTHENTICATION -DENCRYPTION \
+ -DDEFAULT_IM='\"\r\nCray UNICOS 5.0 (%h) (%t)\r\n\r\r\n\r\"' \
+ -DDIAGNOSTICS" \
+ INCLUDES="-I.." \
+ LIB_OBJ="getent.o strerror.o setsid.o strftime.o" \
+ LIB_SRC="getent.c strerror.c setsid.c strftime.c" \
+ AR=bld ARFLAGS=cq RANLIB=NONE \
+ LIBEXEC=${DESTDIR}/etc \
+ CC="${CC}" LCCFLAGS="-O"
+
+sun3.5:
+ make -f Makefile.generic ${WHAT} \
+ LIBS="-ltermcap ../libtelnet/libtelnet.a" \
+ LIBPATH="/lib/libc.a /usr/lib/libtermcap.a \
+ ../libtelnet/libtelnet.a" \
+ DEST=${DESTDIR}/usr/ucb \
+ DEFINES=${ODEFS}"-DTERMCAP -DKLUDGELINEMODE \
+ -DHAVE_fd_set \
+ -DDIAGNOSTICS \
+ -DDEFAULT_IM='\"\r\nSunOS UNIX 3.5 (%h) (%t)\r\n\r\r\n\r\"' \
+ -DNO_LOGIN_P" \
+ INCLUDES="-I.." \
+ LIB_OBJ="getent.o strdup.o strerror.o setsid.o \
+ setenv.o strftime.o strcasecmp.o herror.o" \
+ LIB_SRC="getent.c strdup.c strerror.c setsid.c \
+ setenv.c strftime.c strcasecmp.c herror.c" \
+ AR=ar ARFLAGS=cq RANLIB=ranlib \
+ LIBEXEC=${DESTDIR}/usr/etc/in.telnetd \
+ CC="${CC}" LCCFLAGS="-O"
+
+sun4.0.3c sun4.0:
+ @echo $@ is untested... it may or may not work..."
+ make -f Makefile.generic ${WHAT} \
+ LIBS="-ltermcap ../libtelnet/libtelnet.a" \
+ LIBPATH="/lib/libc.a /usr/lib/libtermcap.a \
+ ../libtelnet/libtelnet.a" \
+ DEST=${DESTDIR}/usr/ucb \
+ DEFINES=${ODEFS}"-DFILIO_H -DTERMCAP -DUSE_TERMIO -DNO_CC_T \
+ -DKLUDGELINEMODE \
+ -DDEFAULT_IM='\"\r\nSunOS UNIX 4.0 (%h) (%t)\r\n\r\r\n\r\"' \
+ -DSTREAMS -DDIAGNOSTICS \
+ " \
+ INCLUDES="-I.." \
+ LIB_OBJ="getent.o strerror.o setsid.o setenv.o \
+ strcasecmp.o strftime.o herror.o" \
+ LIB_SRC="getent.c strerror.c setsid.c setenv.c \
+ strcasecmp.c strftime.c herror.c" \
+ AR=ar ARFLAGS=cq RANLIB=ranlib \
+ LIBEXEC=${DESTDIR}/usr/etc/in.telnetd \
+ CC="${CC}" LCCFLAGS="-O"
+
+sun4.1:
+ make -f Makefile.generic ${WHAT} \
+ LIBS="-ltermcap ../libtelnet/libtelnet.a" \
+ LIBPATH="/lib/libc.a /usr/lib/libtermcap.a \
+ ../libtelnet/libtelnet.a" \
+ DEST=${DESTDIR}/usr/ucb \
+ DEFINES=${ODEFS}"-DFILIO_H -DTERMCAP -DUSE_TERMIO \
+ -DKLUDGELINEMODE -DSTREAMS \
+ -DAUTHENTICATION -DENCRYPTION \
+ -DDEFAULT_IM='\"\r\nSunOS UNIX 4.1 (%h) (%t)\r\n\r\r\n\r\"' \
+ -DDIAGNOSTICS " \
+ INCLUDES="-I.." \
+ LIB_OBJ="getent.o strerror.o setenv.o herror.o" \
+ LIB_SRC="getent.c strerror.c setenv.c herror.c" \
+ AR=ar ARFLAGS=cq RANLIB=ranlib \
+ LIBEXEC=${DESTDIR}/usr/etc/in.telnetd \
+ CC="${CC}" LCCFLAGS="-O"
+
+sol2.0:
+ make -f Makefile.generic ${WHAT} \
+ LIBS="/usr/ccs/lib/libtermcap.a ../libtelnet/libtelnet.a \
+ -lc /usr/ucblib/libucb.a -lsocket -lnsl" \
+ LIBPATH="/usr/ccs/lib/libtermcap.a ../libtelnet/libtelnet.a \
+ /usr/lib/libc.a /usr/ucblib/libucb.a \
+ /usr/lib/libsocket.a /usr/lib/libnsl.a" \
+ DEST=${DESTDIR}/usr/ucb \
+ DEFINES="-DFILIO_H -DTERMCAP -DUSE_TERMIO \
+ -DKLUDGELINEMODE -DSTREAMS -DSTREAMSPTY \
+ -DDIAGNOSTICS -DNO_LOGIN_P -DUTMPX" \
+ INCLUDES="-I.. -I/opt/cygnus/lib/ucbinclude \
+ -I/usr/ucbinclude" \
+ LIB_OBJ="getent.o strerror.o setenv.o herror.o" \
+ LIB_SRC="getent.c strerror.c setenv.c herror.c" \
+ AR=ar ARFLAGS=cq RANLIB=ranlib \
+ LIBEXEC=${DESTDIR}/usr/etc/in.telnetd \
+ CC="${CC}" LCCFLAGS="-O"
+
+dynix3.0.12:
+ @echo $@ is untested... it may or may not work..."
+ make -f Makefile.generic ${WHAT} \
+ LIBS="-ltermcap ../libtelnet/libtelnet.a" \
+ LIBPATH="/lib/libc.a /usr/lib/libtermcap.a \
+ ../libtelnet/libtelnet.a" \
+ DEST=${DESTDIR}/usr/ucb \
+ DEFINES=${ODEFS}"-DTERMCAP -DKLUDGELINEMODE \
+ -DDEFAULT_IM='\"\r\nDYNIX(R) V3.0.12 (%h) (%t)\r\n\r\r\n\r\"' \
+ -DDIAGNOSTICS -DNO_STRING_H " \
+ INCLUDES="-I.." \
+ LIB_OBJ="getent.o strchr.o strrchr.o strdup.o strerror.o \
+ setsid.o setenv.o strcasecmp.o strftime.o getopt.o \
+ mem.o" \
+ LIB_SRC="getent.c strchr.c strrchr.c strdup.c strerror.c \
+ setsid.c setenv.c strcasecmp.c strftime.c getopt.c \
+ mem.o" \
+ AR=ar ARFLAGS=cq RANLIB=ranlib \
+ LIBEXEC=${DESTDIR}/usr/etc \
+ CC="${CC}" LCCFLAGS="-O"
+
+dynix3.0.17:
+ make -f Makefile.generic ${WHAT} \
+ LIBS="-ltermcap ../libtelnet/libtelnet.a -lseq" \
+ LIBPATH="/lib/libc.a /usr/lib/libtermcap.a \
+ ../libtelnet/libtelnet.a /usr/lib/libseq.a" \
+ DEST=${DESTDIR}/usr/ucb \
+ DEFINES=${ODEFS}"-DTERMCAP -DKLUDGELINEMODE \
+ -DDIAGNOSTICS -DNO_STRING_H \
+ -DDEFAULT_IM='\"\r\nDYNIX(R) V3.0.17 (%h) (%t)\r\n\r\r\n\r\"' \
+ " \
+ INCLUDES="-I.." \
+ LIB_OBJ="getent.o strchr.o strrchr.o strdup.o strerror.o \
+ setsid.o strftime.o mem.o" \
+ LIB_SRC="getent.c strchr.c strrchr.c strdup.c strerror.c \
+ setsid.c strftime.c mem.c" \
+ AR=ar ARFLAGS=cq RANLIB=ranlib \
+ LIBEXEC=${DESTDIR}/usr/etc \
+ CC="${CC}" LCCFLAGS="-O"
+
+ultrix3.1:
+ make -f Makefile.generic ${WHAT} \
+ LIBS="-ltermcap ../libtelnet/libtelnet.a" \
+ LIBPATH="/lib/libc.a /usr/lib/libtermcap.a \
+ ../libtelnet/libtelnet.a" \
+ DEST=${DESTDIR}/usr/ucb \
+ DEFINES=${ODEFS}"-DTERMCAP -DKLUDGELINEMODE \
+ -DDIAGNOSTICS -DUSE_TERMIO \
+ -DDEFAULT_IM='\"\r\nULTRIX V3.1 (%h) (%t)\r\n\r\r\n\r\"' \
+ -YPOSIX" \
+ INCLUDES="-I.." \
+ LIB_OBJ="getent.o strdup.o strerror.o setenv.o \
+ strftime.o herror.o" \
+ LIB_SRC="getent.c strdup.c strerror.c setenv.c \
+ strftime.c herror.c" \
+ AR=ar ARFLAGS=cq RANLIB=ranlib \
+ LIBEXEC=${DESTDIR}/usr/etc \
+ CC="${CC}" LCCFLAGS="-O"
+
+ultrix4.0:
+ make -f Makefile.generic ${WHAT} \
+ LIBS="-ltermcap ../libtelnet/libtelnet.a" \
+ LIBPATH="/lib/libc.a /usr/lib/libtermcap.a \
+ ../libtelnet/libtelnet.a" \
+ DEST=${DESTDIR}/usr/ucb \
+ DEFINES=${ODEFS}"-DUSE_TERMIO -DTERMCAP \
+ -DDEFAULT_IM='\"\r\nULTRIX V4.0 (%h) (%t)\r\n\r\r\n\r\"' \
+ -DKLUDGELINEMODE -DDIAGNOSTICS " \
+ INCLUDES="-I.." \
+ LIB_OBJ="getent.o strdup.o strerror.o setsid.o \
+ setenv.o strftime.o" \
+ LIB_SRC="getent.c strdup.c strerror.c setsid.c \
+ setenv.c strftime.c" \
+ AR=ar ARFLAGS=cq RANLIB=ranlib \
+ LIBEXEC=${DESTDIR}/usr/etc \
+ CC="${CC}" LCCFLAGS="-O"
+next1.0:
+ @echo $@ is untested... it may or may not work..."
+ make -f Makefile.generic ${WHAT} \
+ LIBS="../libtelnet/libtelnet.a -ltermcap -lsys_s" \
+ LIBPATH="/lib/libc.a /lib/libsys_s.a /usr/lib/libtermcap.a \
+ ../libtelnet/libtelnet.a" \
+ DEST=${DESTDIR}/usr/ucb \
+ DEFINES=${ODEFS}"-bsd -DTERMCAP -DKLUDGELINEMODE \
+ -DDEFAULT_IM='\"\r\nNeXT 1.0 (%h) (%t)\r\n\r\r\n\r\"' \
+ -DDIAGNOSTICS -DNO_STRING_H \
+ -Dgetenv=getenv_" \
+ INCLUDES="-I.." \
+ LIB_OBJ="strdup.o setenv.o setsid.o strftime.o \
+ strcasecmp.o gettytab.o" \
+ LIB_SRC=s"trdup.c setenv.c setsid.c strftime.c \
+ strcasecmp.c gettytab.c" \
+ CC="${CC}" LCCFLAGS="-O" \
+ VPATH=../../getty \
+ AR=ar ARFLAGS=cq RANLIB=ranlib \
+ LIBEXEC=${DESTDIR}/usr/etc
+
+#
+# For the convex, make symbolic links to the tc[sg]getattr.c routines,
+# because we are using posix stuff, but not the posix library...
+# Pass the stuff to Makefile.generic by passing the object/source names
+# in through LIB_OBJ and LIB_SRC
+#
+convex:
+ @echo $@ is untested... it may or may not work..."
+ ln -s ../../rel_usr/src/lib/libc/posix/tcsetattr.c tcsetattr.c
+ ln -s ../../rel_usr/src/lib/libc/posix/tcgetattr.c tcgetattr.c
+ make -f Makefile.generic ${WHAT} \
+ LIBS="-ltermcap ../libtelnet/libtelnet.a" \
+ LIBPATH="../libtelnet/libtelnet.a" \
+ AR=ar ARFLAGS=cq RANLIB=ranlib \
+ LIBEXEC=${DESTDIR}/usr/etc/in.telnetd \
+ CC="${CC}" LCCFLAGS="-g ${OPTLEV} -Dconvex" \
+ DEFINES=${ODEFS}"-DUSE_TERMIO -DLINEMODE \
+ -DDEFAULT_IM='\"\r\nConvex (%h) (%t)\r\n\r\r\n\r\"' \
+ -DDIAGNOSTICS" \
+ INCLUDES="-I.." \
+ LIB_OBJ="getent.o setsid.o strftime.o \
+ tcsetattr.o tcgetattr.o" \
+ LIB_SRC="getent.c setsid.c strftime.c \
+ tcsetattr.c tcgetattr.c"
+
+clean cleandir:
+ make -f Makefile.generic $@
--- /dev/null
+all:
+ cd libtelnet; make CC="${CC}"
+ cd telnet; make CC="${CC}"
+ cd telnetd; make CC="${CC}"
+
+.DEFAULT:
+ cd libtelnet; make $@ WHAT=${WHAT} CC="${CC}"
+ cd telnet; make $@ WHAT=${WHAT} CC="${CC}"
+ cd telnetd; make $@ WHAT=${WHAT} CC="${CC}"
--- /dev/null
+
+
+This is a distribution of both client and server telnet. These programs
+have been compiled on:
+ telnet telnetd
+ BSD 4.3 Reno X X
+ UNICOS 5.1 X X
+ UNICOS 6.0 X X
+ UNICOS 6.1 X X
+ UNICOS 7.0 X X
+ SunOs 3.5 X X (no linemode in server)
+ SunOs 4.1 X X (no linemode in server)
+ DYNIX V3.0.17.9 X X (no linemode in server)
+ Ultrix 3.1 X X (no linemode in server)
+ Ultrix 4.0 X X (no linemode in server)
+
+In addition, previous versions have been compiled on the following
+machines, but were not available for testing this version.
+ telnet telnetd
+ Next1.0 X X
+ UNICOS 5.0 X X
+ SunOs 4.0.3c X X (no linemode in server)
+ BSD 4.3 X X (no linemode in server)
+ DYNIX V3.0.12 X X (no linemode in server)
+
+Februrary 22, 1991:
+
+ Features:
+
+ This version of telnet/telnetd has support for both
+ the AUTHENTICATION and ENCRYPTION options. The
+ AUTHENTICATION option is fairly well defined, and
+ an option number has been assigned to it. The
+ ENCRYPTION option is still in a state of flux; an
+ option number has been assigned to, but it is still
+ subject to change. The code is provided in this release
+ for experimental and testing purposes.
+
+ The telnet "send" command can now be used to send
+ do/dont/will/wont commands, with any telnet option
+ name. The rules for when do/dont/will/wont are sent
+ are still followed, so just because the user requests
+ that one of these be sent doesn't mean that it will
+ be sent...
+
+ The telnet "getstatus" command no longer requires
+ that option printing be enabled to see the response
+ to the "DO STATUS" command.
+
+ A -n flag has been added to telnetd to disable
+ keepalives.
+
+ A new telnet command, "auth" has been added (if
+ AUTHENTICATE is defined). It has four sub-commands,
+ "status", "disable", "enable" and "help".
+
+ A new telnet command, "encrypt" has been added (if
+ ENCRYPT is defined). It has many sub-commands:
+ "enable", "type", "start", "stop", "input",
+ "-input", "output", "-output", "status", and "help".
+
+ The LOGOUT option is now supported by both telnet
+ and telnetd, a new command, "logout", was added
+ to support this.
+
+ Several new toggle options were added:
+ "autoencrypt", "autodecrypt", "autologin", "authdebug",
+ "encdebug", "skiprc", "verbose_encrypt"
+
+ An "rlogin" interface has been added. If the program
+ is named "rlogin", or the "-r" flag is given, then
+ an rlogin type of interface will be used.
+ ~. Terminates the session
+ ~<susp> Suspend the session
+ ~^] Escape to telnet command mode
+ ~~ Pass through the ~.
+ BUG: If you type the rlogin escape character
+ in the middle of a line while in rlogin
+ mode, you cannot erase it or any characters
+ before it. Hopefully this can be fixed
+ in a future release...
+
+ General changes:
+
+ A "libtelnet.a" has now been created. This libraray
+ contains code that is common to both telnet and
+ telnetd. This is also where library routines that
+ are needed, but are not in the standard C library,
+ are placed.
+
+ The makefiles have been re-done. All of the site
+ specific configuration information has now been put
+ into a single "Config.generic" file, in the top level
+ directory. Changing this one file will take care of
+ all three subdirectories. Also, to add a new/local
+ definition, a "Config.local" file may be created
+ at the top level; if that file exists, the subdirectories
+ will use that file instead of "Config.generic".
+
+ Many 1-2 line functions in commands.c have been
+ removed, and just inserted in-line, or replaced
+ with a macro.
+
+ Bug Fixes:
+
+ The non-termio code in both telnet and telnetd was
+ setting/clearing CTLECH in the sg_flags word. This
+ was incorrect, and has been changed to set/clear the
+ LCTLECH bit in the local mode word.
+
+ The SRCRT #define has been removed. If IP_OPTIONS
+ and IPPROTO_IP are defined on the system, then the
+ source route code is automatically enabled.
+
+ The NO_GETTYTAB #define has been removed; there
+ is a compatability routine that can be built into
+ libtelnet to achive the same results.
+
+ The server, telnetd, has been switched to use getopt()
+ for parsing the argument list.
+
+ The code for getting the input/output speeds via
+ cfgetispeed()/cfgetospeed() was still not quite
+ right in telnet. Posix says if the ispeed is 0,
+ then it is really equal to the ospeed.
+
+ The suboption processing code in telnet now has
+ explicit checks to make sure that we received
+ the entire suboption (telnetd was already doing this).
+
+ The telnet code for processing the terminal type
+ could cause a core dump if an existing connection
+ was closed, and a new connection opened without
+ exiting telnet.
+
+ Telnetd was doing a TCSADRAIN when setting the new
+ terminal settings; This is not good, because it means
+ that the tcsetattr() will hang waiting for output to
+ drain, and telnetd is the only one that will drain
+ the output... The fix is to use TCSANOW which does
+ not wait.
+
+ Telnetd was improperly setting/clearing the ISTRIP
+ flag in the c_lflag field, it should be using the
+ c_iflag field.
+
+ When the child process of telnetd was opening the
+ slave side of the pty, it was re-setting the EXTPROC
+ bit too early, and some of the other initialization
+ code was wiping it out. This would cause telnetd
+ to go out of linemode and into single character mode.
+
+ One instance of leaving linemode in telnetd forgot
+ to send a WILL ECHO to the client, the net result
+ would be that the user would see double character
+ echo.
+
+ If the MODE was being changed several times very
+ quickly, telnetd could get out of sync with the
+ state changes and the returning acks; and wind up
+ being left in the wrong state.
+
+September 14, 1990:
+
+ Switch the client to use getopt() for parsing the
+ argument list. The 4.3Reno getopt.c is included for
+ systems that don't have getopt().
+
+ Use the posix _POSIX_VDISABLE value for what value
+ to use when disabling special characters. If this
+ is undefined, it defaults to 0x3ff.
+
+ For non-termio systems, TIOCSETP was being used to
+ change the state of the terminal. This causes the
+ input queue to be flushed, which we don't want. This
+ is now changed to TIOCSETN.
+
+ Take out the "#ifdef notdef" around the code in the
+ server that generates a "sync" when the pty oputput
+ is flushed. The potential problem is that some older
+ telnet clients may go into an infinate loop when they
+ receive a "sync", if so, the server can be compiled
+ with "NO_URGENT" defined.
+
+ Fix the client where it was setting/clearing the OPOST
+ bit in the c_lflag field, not the c_oflag field.
+
+ Fix the client where it was setting/clearing the ISTRIP
+ bit in the c_lflag field, not the c_iflag field. (On
+ 4.3Reno, this is the ECHOPRT bit in the c_lflag field.)
+ The client also had its interpretation of WILL BINARY
+ and DO BINARY reversed.
+
+ Fix a bug in client that would cause a core dump when
+ attempting to remove the last environment variable.
+
+ In the client, there were a few places were switch()
+ was being passed a character, and if it was a negative
+ value, it could get sign extended, and not match
+ the 8 bit case statements. The fix is to and the
+ switch value with 0xff.
+
+ Add a couple more printoption() calls in the client, I
+ don't think there are any more places were a telnet
+ command can be received and not printed out when
+ "options" is on.
+
+ A new flag has been added to the client, "-a". Currently,
+ this just causes the USER name to be sent across, in
+ the future this may be used to signify that automatic
+ authentication is requested.
+
+ The USER variable is now only sent by the client if
+ the "-a" or "-l user" options are explicity used, or
+ if the user explicitly asks for the "USER" environment
+ variable to be exported. In the server, if it receives
+ the "USER" environment variable, it won't print out the
+ banner message, so that only "Password:" will be printed.
+ This makes the symantics more like rlogin, and should be
+ more familiar to the user. (People are not used to
+ getting a banner message, and then getting just a
+ "Password:" prompt.)
+
+ Re-vamp the code for starting up the child login
+ process. The code was getting ugly, and it was
+ hard to tell what was really going on. What we
+ do now is after the fork(), in the child:
+ 1) make sure we have no controlling tty
+ 2) open and initialize the tty
+ 3) do a setsid()/setpgrp()
+ 4) makes the tty our controlling tty.
+ On some systems, #2 makes the tty our controlling
+ tty, and #4 is a no-op. The parent process does
+ a gets rid of any controlling tty after the child
+ is fork()ed.
+
+ Use the strdup() library routine in telnet, instead
+ of the local savestr() routine. If you don't have
+ strdup(), you need to define NO_STRDUP.
+
+ Add support for ^T (SIGINFO/VSTATUS), found in the
+ 4.3Reno distribution. This maps to the AYT character.
+ You need a 4-line bugfix in the kernel to get this
+ to work properly:
+
+ > *** tty_pty.c.ORG Tue Sep 11 09:41:53 1990
+ > --- tty_pty.c Tue Sep 11 17:48:03 1990
+ > ***************
+ > *** 609,613 ****
+ > if ((tp->t_lflag&NOFLSH) == 0)
+ > ttyflush(tp, FREAD|FWRITE);
+ > ! pgsignal(tp->t_pgrp, *(unsigned int *)data);
+ > return(0);
+ > }
+ > --- 609,616 ----
+ > if ((tp->t_lflag&NOFLSH) == 0)
+ > ttyflush(tp, FREAD|FWRITE);
+ > ! pgsignal(tp->t_pgrp, *(unsigned int *)data, 1);
+ > ! if ((*(unsigned int *)data == SIGINFO) &&
+ > ! ((tp->t_lflag&NOKERNINFO) == 0))
+ > ! ttyinfo(tp);
+ > return(0);
+ > }
+
+ The client is now smarter when setting the telnet escape
+ character; it only sets it to one of VEOL and VEOL2 if
+ one of them is undefined, and the other one is not already
+ defined to the telnet escape character.
+
+ Handle TERMIOS systems that have seperate input and output
+ line speed settings imbedded in the flags.
+
+ Many other minor bug fixes.
+
+June 20, 1990:
+ Re-organize makefiles and source tree. The telnet/Source
+ directory is now gone, and all the source that was in
+ telnet/Source is now just in the telnet directory.
+
+ Seperate makefile for each system are now gone. There
+ are two makefiles, Makefile and Makefile.generic.
+ The "Makefile" has the definitions for the various
+ system, and "Makefile.generic" does all the work.
+ There is a variable called "WHAT" that is used to
+ specify what to make. For example, in the telnet
+ directory, you might say:
+ make 4.4bsd WHAT=clean
+ to clean out the directory.
+
+ Add support for the ENVIRON and XDISPLOC options.
+ In order for the server to work, login has to have
+ the "-p" option to preserve environment variables.
+
+ Add the SOFT_TAB and LIT_ECHO modes in the LINEMODE support.
+
+ Add the "-l user" option to command line and open command
+ (This is passed through the ENVIRON option).
+
+ Add the "-e" command line option, for setting the escape
+ character.
+
+ Add the "-D", diagnostic, option to the server. This allows
+ the server to print out debug information, which is very
+ useful when trying to debug a telnet that doesn't have any
+ debugging ability.
+
+ Turn off the literal next character when not in LINEMODE.
+
+ Don't recognize ^Y locally, just pass it through.
+
+ Make minor modifications for Sun4.0 and Sun4.1
+
+ Add support for both FORW1 and FORW2 characters. The
+ telnet escpape character is set to whichever of the
+ two is not being used. If both are in use, the escape
+ character is not set, so when in linemode the user will
+ have to follow the escape character with a <CR> or <EOF)
+ to get it passed through.
+
+ Commands can now be put in single and double quotes, and
+ a backslash is now an escape character. This is needed
+ for allowing arbitrary strings to be assigned to environment
+ variables.
+
+ Switch telnetd to use macros like telnet for keeping
+ track of the state of all the options.
+
+ Fix telnetd's processing of options so that we always do
+ the right processing of the LINEMODE option, regardless
+ of who initiates the request to turn it on. Also, make
+ sure that if the other side went "WILL ECHO" in response
+ to our "DO ECHO", that we send a "DONT ECHO" to get the
+ option turned back off!
+
+ Fix the TERMIOS setting of the terminal speed to handle both
+ BSD's seperate fields, and the SYSV method of CBAUD bits.
+
+ Change how we deal with the other side refusing to enable
+ an option. The sequence used to be: send DO option; receive
+ WONT option; send DONT option. Now, the sequence is: send
+ DO option; receive WONT option. Both should be valid
+ according to the spec, but there has been at least one
+ client implementation of telnet identified that can get
+ really confused by this. (The exact sequence, from a trace
+ on the server side, is (numbers are number of responses that
+ we expect to get after that line...):
+
+ send WILL ECHO 1 (initial request)
+ send WONT ECHO 2 (server is changing state)
+ recv DO ECHO 1 (first reply, ok. expect DONT ECHO next)
+ send WILL ECHO 2 (server changes state again)
+ recv DONT ECHO 1 (second reply, ok. expect DO ECHO next)
+ recv DONT ECHO 0 (third reply, wrong answer. got DONT!!!)
+ *** send WONT ECHO (send WONT to acknowledge the DONT)
+ send WILL ECHO 1 (ask again to enable option)
+ recv DO ECHO 0
+
+ recv DONT ECHO 0
+ send WONT ECHO 1
+ recv DONT ECHO 0
+ recv DO ECHO 1
+ send WILL ECHO 0
+ (and the last 5 lines loop forever)
+
+ The line with the "***" is last of the WILL/DONT/WONT sequence.
+ The change to the server to not generate that makes this same
+ example become:
+
+ send will ECHO 1
+ send wont ECHO 2
+ recv do ECHO 1
+ send will ECHO 2
+ recv dont ECHO 1
+ recv dont ECHO 0
+ recv do ECHO 1
+ send will ECHO 0
+
+ There is other option negotiation going on, and not sending
+ the third part changes some of the timings, but this specific
+ example no longer gets stuck in a loop. The "telnet.state"
+ file has been modified to reflect this change to the algorithm.
+
+ A bunch of miscellaneous bug fixes and changes to make
+ lint happier.
+
+ This version of telnet also has some KERBEROS stuff in
+ it. This has not been tested, it uses an un-authorized
+ telnet option number, and uses an out-of-date version
+ of the (still being defined) AUTHENTICATION option.
+ There is no support for this code, do not enable it.
+
+
+March 1, 1990:
+CHANGES/BUGFIXES SINCE LAST RELEASE:
+ Some support for IP TOS has been added. Requires that the
+ kernel support the IP_TOS socket option (currently this
+ is only in UNICOS 6.0).
+
+ Both telnet and telnetd now use the cc_t typedef. typedefs are
+ included for systems that don't have it (in termios.h).
+
+ SLC_SUSP was not supported properly before. It is now.
+
+ IAC EOF was not translated properly in telnetd for SYSV_TERMIO
+ when not in linemode. It now saves a copy of the VEOF character,
+ so that when ICANON is turned off and we can't trust it anymore
+ (because it is now the VMIN character) we use the saved value.
+
+ There were two missing "break" commands in the linemode
+ processing code in telnetd.
+
+ Telnetd wasn't setting the kernel window size information
+ properly. It was using the rows for both rows and columns...
+
+Questions/comments go to
+ David Borman
+ Cray Research, Inc.
+ 655F Lone Oak Drive
+ Eagan, MN 55123
+ dab@cray.com.
+
+README: You are reading it.
+
+Config.generic:
+ This file contains all the OS specific definitions. It
+ has pre-definitions for many common system types, and is
+ in standard makefile fromat. See the comments at the top
+ of the file for more information.
+
+Config.local:
+ This is not part of the distribution, but if this file exists,
+ it is used instead of "Config.generic". This allows site
+ specific configuration without having to modify the distributed
+ "Config.generic" file.
+
+kern.diff:
+ This file contains the diffs for the changes needed for the
+ kernel to support LINEMODE is the server. These changes are
+ for a 4.3BSD system. You may need to make some changes for
+ your particular system.
+
+ There is a new bit in the terminal state word, TS_EXTPROC.
+ When this bit is set, several aspects of the terminal driver
+ are disabled. Input line editing, character echo, and
+ mapping of signals are all disabled. This allows the telnetd
+ to turn of these functions when in linemode, but still keep
+ track of what state the user wants the terminal to be in.
+
+ New ioctl()s:
+
+ TIOCEXT Turn on/off the TS_EXTPROC bit
+ TIOCGSTATE Get t_state of tty to look at TS_EXTPROC bit
+ TIOCSIG Generate a signal to processes in the
+ current process group of the pty.
+
+ There is a new mode for packet driver, the TIOCPKT_IOCTL bit.
+ When packet mode is turned on in the pty, and the TS_EXTPROC
+ bit is set, then whenever the state of the pty is changed, the
+ next read on the master side of the pty will have the TIOCPKT_IOCTL
+ bit set, and the data will contain the following:
+ struct xx {
+ struct sgttyb a;
+ struct tchars b;
+ struct ltchars c;
+ int t_state;
+ int t_flags;
+ }
+ This allows the process on the server side of the pty to know
+ when the state of the terminal has changed, and what the new
+ state is.
+
+ However, if you define USE_TERMIO or SYSV_TERMIO, the code will
+ expect that the structure returned in the TIOCPKT_IOCTL is
+ the termio/termios structure.
+
+stty.diff:
+ This file contains the changes needed for the stty(1) program
+ to report on the current status of the TS_EXTPROC bit. It also
+ allows the user to turn on/off the TS_EXTPROC bit. This is useful
+ because it allows the user to say "stty -extproc", and the
+ LINEMODE option will be automatically disabled, and saying "stty
+ extproc" will re-enable the LINEMODE option.
+
+telnet.state:
+ Both the client and server have code in them to deal
+ with option negotiation loops. The algorithm that is
+ used is described in this file.
+
+telnet:
+ This directory contains the client code. No kernel changes are
+ needed to use this code.
+
+telnet/tmac.an:
+telnet/tmac.an.old:
+telnet/tmac.andoc:
+ Macros for use in formatting the telnet/telnet.1 man page
+ on non-4.3Reno systems. Just use the tmac.an, it includes
+ the other two. Also, these macros work with nroff and
+ ditroff, but not troff...
+
+telnetd:
+ This directory contains the server code. If LINEMODE or KLUDGELINEMODE
+ are defined, then the kernel modifications listed above are needed.
+
+libtelnet:
+ This directory contains code that is common to both the client
+ and the server.
+
+arpa:
+ This directory has a new <arpa/telnet.h>
+
+libtelnet/Makefile.4.4:
+telnet/Makefile.4.4:
+telnetd/Makefile.4.4:
+ These are the makefiles that can be used on a 4.3Reno
+ system when this software is installed in /usr/src/lib/libtelnet,
+ /usr/src/libexec/telnetd, and /usr/src/usr.bin/telnet.
+
+
+The following TELNET options are supported:
+
+ LINEMODE:
+ The LINEMODE option is supported as per RFC1116. The
+ FORWARDMASK option is not currently supported.
+
+ BINARY: The client has the ability to turn on/off the BINARY
+ option in each direction. Turning on BINARY from
+ server to client causes the LITOUT bit to get set in
+ the terminal driver on both ends, turning on BINARY
+ from the client to the server causes the PASS8 bit
+ to get set in the terminal driver on both ends.
+
+ TERMINAL-TYPE:
+ This is supported as per RFC1091. On the server side,
+ when a terminal type is received, termcap/terminfo
+ is consulted to determine if it is a known terminal
+ type. It keeps requesting terminal types until it
+ gets one that it recongnizes, or hits the end of the
+ list. The server side looks up the entry in the
+ termcap/terminfo data base, and generates a list of
+ names which it then passes one at a time to each
+ request for a terminal type, duplicating the last
+ entry in the list before cycling back to the beginning.
+
+ NAWS: The Negotiate about Window Size, as per RFC 1073.
+
+ TERMINAL-SPEED:
+ Implemented as per RFC 1079
+
+ TOGGLE-FLOW-CONTROL:
+ Implemented as per RFC 1080
+
+ TIMING-MARK:
+ As per RFC 860
+
+ SGA: As per RFC 858
+
+ ECHO: As per RFC 857
+
+ LOGOUT: As per RFC 727
+
+ STATUS:
+ The server will send its current status upon
+ request. It does not ask for the clients status.
+ The client will request the servers current status
+ from the "send getstatus" command.
+
+ ENVIRON:
+ This option is currently being defined by the IETF
+ Telnet Working Group, and an RFC has not yet been
+ issued, but should be in the near future...
+
+ X-DISPLAY-LOCATION:
+ This functionality can be done through the ENVIRON
+ option, it is added here for completeness.
+
+ AUTHENTICATION:
+ This option is currently being defined by the IETF
+ Telnet Working Group, and an RFC has not yet been
+ issued. The basic framework is pretty much decided,
+ but the definitions for the specific authentication
+ schemes is still in a state of flux.
+
+ ENCRYPT:
+ This option is currently being defined by the IETF
+ Telnet Working Group, and an RFC has not yet been
+ issued. The draft RFC is still in a state of flux,
+ so this code may change in the future.
--- /dev/null
+/*
+ * Copyright (c) 1983 Regents of the University of California.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * @(#)telnet.h 5.15 (Berkeley) 12/18/92
+ */
+
+#ifndef _TELNET_H_
+#define _TELNET_H_
+
+/*
+ * Definitions for the TELNET protocol.
+ */
+#define IAC 255 /* interpret as command: */
+#define DONT 254 /* you are not to use option */
+#define DO 253 /* please, you use option */
+#define WONT 252 /* I won't use option */
+#define WILL 251 /* I will use option */
+#define SB 250 /* interpret as subnegotiation */
+#define GA 249 /* you may reverse the line */
+#define EL 248 /* erase the current line */
+#define EC 247 /* erase the current character */
+#define AYT 246 /* are you there */
+#define AO 245 /* abort output--but let prog finish */
+#define IP 244 /* interrupt process--permanently */
+#define BREAK 243 /* break */
+#define DM 242 /* data mark--for connect. cleaning */
+#define NOP 241 /* nop */
+#define SE 240 /* end sub negotiation */
+#define EOR 239 /* end of record (transparent mode) */
+#define ABORT 238 /* Abort process */
+#define SUSP 237 /* Suspend process */
+#define xEOF 236 /* End of file: EOF is already used... */
+
+#define SYNCH 242 /* for telfunc calls */
+
+#ifdef TELCMDS
+char *telcmds[] = {
+ "EOF", "SUSP", "ABORT", "EOR",
+ "SE", "NOP", "DMARK", "BRK", "IP", "AO", "AYT", "EC",
+ "EL", "GA", "SB", "WILL", "WONT", "DO", "DONT", "IAC", 0,
+};
+#else
+extern char *telcmds[];
+#endif
+
+#define TELCMD_FIRST xEOF
+#define TELCMD_LAST IAC
+#define TELCMD_OK(x) ((x) <= TELCMD_LAST && (x) >= TELCMD_FIRST)
+#define TELCMD(x) telcmds[(x)-TELCMD_FIRST]
+
+/* telnet options */
+#define TELOPT_BINARY 0 /* 8-bit data path */
+#define TELOPT_ECHO 1 /* echo */
+#define TELOPT_RCP 2 /* prepare to reconnect */
+#define TELOPT_SGA 3 /* suppress go ahead */
+#define TELOPT_NAMS 4 /* approximate message size */
+#define TELOPT_STATUS 5 /* give status */
+#define TELOPT_TM 6 /* timing mark */
+#define TELOPT_RCTE 7 /* remote controlled transmission and echo */
+#define TELOPT_NAOL 8 /* negotiate about output line width */
+#define TELOPT_NAOP 9 /* negotiate about output page size */
+#define TELOPT_NAOCRD 10 /* negotiate about CR disposition */
+#define TELOPT_NAOHTS 11 /* negotiate about horizontal tabstops */
+#define TELOPT_NAOHTD 12 /* negotiate about horizontal tab disposition */
+#define TELOPT_NAOFFD 13 /* negotiate about formfeed disposition */
+#define TELOPT_NAOVTS 14 /* negotiate about vertical tab stops */
+#define TELOPT_NAOVTD 15 /* negotiate about vertical tab disposition */
+#define TELOPT_NAOLFD 16 /* negotiate about output LF disposition */
+#define TELOPT_XASCII 17 /* extended ascic character set */
+#define TELOPT_LOGOUT 18 /* force logout */
+#define TELOPT_BM 19 /* byte macro */
+#define TELOPT_DET 20 /* data entry terminal */
+#define TELOPT_SUPDUP 21 /* supdup protocol */
+#define TELOPT_SUPDUPOUTPUT 22 /* supdup output */
+#define TELOPT_SNDLOC 23 /* send location */
+#define TELOPT_TTYPE 24 /* terminal type */
+#define TELOPT_EOR 25 /* end or record */
+#define TELOPT_TUID 26 /* TACACS user identification */
+#define TELOPT_OUTMRK 27 /* output marking */
+#define TELOPT_TTYLOC 28 /* terminal location number */
+#define TELOPT_3270REGIME 29 /* 3270 regime */
+#define TELOPT_X3PAD 30 /* X.3 PAD */
+#define TELOPT_NAWS 31 /* window size */
+#define TELOPT_TSPEED 32 /* terminal speed */
+#define TELOPT_LFLOW 33 /* remote flow control */
+#define TELOPT_LINEMODE 34 /* Linemode option */
+#define TELOPT_XDISPLOC 35 /* X Display Location */
+#define TELOPT_ENVIRON 36 /* Environment variables */
+#define TELOPT_AUTHENTICATION 37/* Authenticate */
+#define TELOPT_ENCRYPT 38 /* Encryption option */
+#define TELOPT_EXOPL 255 /* extended-options-list */
+
+
+#define NTELOPTS (1+TELOPT_ENCRYPT)
+#ifdef TELOPTS
+char *telopts[NTELOPTS+1] = {
+ "BINARY", "ECHO", "RCP", "SUPPRESS GO AHEAD", "NAME",
+ "STATUS", "TIMING MARK", "RCTE", "NAOL", "NAOP",
+ "NAOCRD", "NAOHTS", "NAOHTD", "NAOFFD", "NAOVTS",
+ "NAOVTD", "NAOLFD", "EXTEND ASCII", "LOGOUT", "BYTE MACRO",
+ "DATA ENTRY TERMINAL", "SUPDUP", "SUPDUP OUTPUT",
+ "SEND LOCATION", "TERMINAL TYPE", "END OF RECORD",
+ "TACACS UID", "OUTPUT MARKING", "TTYLOC",
+ "3270 REGIME", "X.3 PAD", "NAWS", "TSPEED", "LFLOW",
+ "LINEMODE", "XDISPLOC", "ENVIRON", "AUTHENTICATION",
+ "ENCRYPT",
+ 0,
+};
+#define TELOPT_FIRST TELOPT_BINARY
+#define TELOPT_LAST TELOPT_ENCRYPT
+#define TELOPT_OK(x) ((x) <= TELOPT_LAST && (x) >= TELOPT_FIRST)
+#define TELOPT(x) telopts[(x)-TELOPT_FIRST]
+#endif
+
+/* sub-option qualifiers */
+#define TELQUAL_IS 0 /* option is... */
+#define TELQUAL_SEND 1 /* send option */
+#define TELQUAL_INFO 2 /* ENVIRON: informational version of IS */
+#define TELQUAL_REPLY 2 /* AUTHENTICATION: client version of IS */
+#define TELQUAL_NAME 3 /* AUTHENTICATION: client version of IS */
+
+#define LFLOW_OFF 0 /* Disable remote flow control */
+#define LFLOW_ON 1 /* Enable remote flow control */
+#define LFLOW_RESTART_ANY 2 /* Restart output on any char */
+#define LFLOW_RESTART_XON 3 /* Restart output only on XON */
+
+/*
+ * LINEMODE suboptions
+ */
+
+#define LM_MODE 1
+#define LM_FORWARDMASK 2
+#define LM_SLC 3
+
+#define MODE_EDIT 0x01
+#define MODE_TRAPSIG 0x02
+#define MODE_ACK 0x04
+#define MODE_SOFT_TAB 0x08
+#define MODE_LIT_ECHO 0x10
+
+#define MODE_MASK 0x1f
+
+/* Not part of protocol, but needed to simplify things... */
+#define MODE_FLOW 0x0100
+#define MODE_ECHO 0x0200
+#define MODE_INBIN 0x0400
+#define MODE_OUTBIN 0x0800
+#define MODE_FORCE 0x1000
+
+#define SLC_SYNCH 1
+#define SLC_BRK 2
+#define SLC_IP 3
+#define SLC_AO 4
+#define SLC_AYT 5
+#define SLC_EOR 6
+#define SLC_ABORT 7
+#define SLC_EOF 8
+#define SLC_SUSP 9
+#define SLC_EC 10
+#define SLC_EL 11
+#define SLC_EW 12
+#define SLC_RP 13
+#define SLC_LNEXT 14
+#define SLC_XON 15
+#define SLC_XOFF 16
+#define SLC_FORW1 17
+#define SLC_FORW2 18
+
+#define NSLC 18
+
+/*
+ * For backwards compatability, we define SLC_NAMES to be the
+ * list of names if SLC_NAMES is not defined.
+ */
+#define SLC_NAMELIST "0", "SYNCH", "BRK", "IP", "AO", "AYT", "EOR", \
+ "ABORT", "EOF", "SUSP", "EC", "EL", "EW", "RP", \
+ "LNEXT", "XON", "XOFF", "FORW1", "FORW2", 0,
+#ifdef SLC_NAMES
+char *slc_names[] = {
+ SLC_NAMELIST
+};
+#else
+extern char *slc_names[];
+#define SLC_NAMES SLC_NAMELIST
+#endif
+
+#define SLC_NAME_OK(x) ((x) >= 0 && (x) <= NSLC)
+#define SLC_NAME(x) slc_names[x]
+
+#define SLC_NOSUPPORT 0
+#define SLC_CANTCHANGE 1
+#define SLC_VARIABLE 2
+#define SLC_DEFAULT 3
+#define SLC_LEVELBITS 0x03
+
+#define SLC_FUNC 0
+#define SLC_FLAGS 1
+#define SLC_VALUE 2
+
+#define SLC_ACK 0x80
+#define SLC_FLUSHIN 0x40
+#define SLC_FLUSHOUT 0x20
+
+#define ENV_VALUE 0
+#define ENV_VAR 1
+#define ENV_ESC 2
+#define ENV_USERVAR 3
+
+/*
+ * AUTHENTICATION suboptions
+ */
+
+/*
+ * Who is authenticating who ...
+ */
+#define AUTH_WHO_CLIENT 0 /* Client authenticating server */
+#define AUTH_WHO_SERVER 1 /* Server authenticating client */
+#define AUTH_WHO_MASK 1
+
+/*
+ * amount of authentication done
+ */
+#define AUTH_HOW_ONE_WAY 0
+#define AUTH_HOW_MUTUAL 2
+#define AUTH_HOW_MASK 2
+
+#define AUTHTYPE_NULL 0
+#define AUTHTYPE_KERBEROS_V4 1
+#define AUTHTYPE_KERBEROS_V5 2
+#define AUTHTYPE_SPX 3
+#define AUTHTYPE_MINK 4
+#define AUTHTYPE_CNT 5
+
+#define AUTHTYPE_TEST 99
+
+#ifdef AUTH_NAMES
+char *authtype_names[] = {
+ "NULL", "KERBEROS_V4", "KERBEROS_V5", "SPX", "MINK", 0,
+};
+#else
+extern char *authtype_names[];
+#endif
+
+#define AUTHTYPE_NAME_OK(x) ((x) >= 0 && (x) < AUTHTYPE_CNT)
+#define AUTHTYPE_NAME(x) authtype_names[x]
+
+/*
+ * ENCRYPTion suboptions
+ */
+#define ENCRYPT_IS 0 /* I pick encryption type ... */
+#define ENCRYPT_SUPPORT 1 /* I support encryption types ... */
+#define ENCRYPT_REPLY 2 /* Initial setup response */
+#define ENCRYPT_START 3 /* Am starting to send encrypted */
+#define ENCRYPT_END 4 /* Am ending encrypted */
+#define ENCRYPT_REQSTART 5 /* Request you start encrypting */
+#define ENCRYPT_REQEND 6 /* Request you send encrypting */
+#define ENCRYPT_ENC_KEYID 7
+#define ENCRYPT_DEC_KEYID 8
+#define ENCRYPT_CNT 9
+
+#define ENCTYPE_ANY 0
+#define ENCTYPE_DES_CFB64 1
+#define ENCTYPE_DES_OFB64 2
+#define ENCTYPE_CNT 3
+
+#ifdef ENCRYPT_NAMES
+char *encrypt_names[] = {
+ "IS", "SUPPORT", "REPLY", "START", "END",
+ "REQUEST-START", "REQUEST-END", "ENC-KEYID", "DEC-KEYID",
+ 0,
+};
+char *enctype_names[] = {
+ "ANY", "DES_CFB64", "DES_OFB64", 0,
+};
+#else
+extern char *encrypt_names[];
+extern char *enctype_names[];
+#endif
+
+
+#define ENCRYPT_NAME_OK(x) ((x) >= 0 && (x) < ENCRYPT_CNT)
+#define ENCRYPT_NAME(x) encrypt_names[x]
+
+#define ENCTYPE_NAME_OK(x) ((x) >= 0 && (x) < ENCTYPE_CNT)
+#define ENCTYPE_NAME(x) enctype_names[x]
+
+#endif /* !_TELNET_H_ */
--- /dev/null
+*** h/ioctl.h.old Tue May 23 14:50:42 1989
+--- h/ioctl.h Tue Aug 29 18:24:49 1989
+***************
+*** 214,219 ****
+--- 214,220 ----
+ #define TIOCPKT_START 0x08 /* start output */
+ #define TIOCPKT_NOSTOP 0x10 /* no more ^S, ^Q */
+ #define TIOCPKT_DOSTOP 0x20 /* now do ^S ^Q */
++ #define TIOCPKT_IOCTL 0x40 /* state change of pty driver */
+ #define TIOCSTOP _IO('t', 111) /* stop output, like ^S */
+ #define TIOCSTART _IO('t', 110) /* start output, like ^Q */
+ #define TIOCMSET _IOW('t', 109, int) /* set all modem bits */
+***************
+*** 226,231 ****
+--- 227,235 ----
+ #define TIOCUCNTL _IOW('t', 102, int) /* pty: set/clr usr cntl mode */
+ #define UIOCCMD(n) _IO('u', n) /* usr cntl op "n" */
+ #define TIOCCONS _IO('t', 98) /* become virtual console */
++ #define TIOCEXT _IOW('t', 97, int) /* pty: external processing */
++ #define TIOCGSTATE _IOR('t', 96, int) /* pty: get internal state */
++ #define TIOCSIG _IO('t', 95) /* pty: generate signal */
+
+ #define OTTYDISC 0 /* old, v7 std tty driver */
+ #define NETLDISC 1 /* line discip for berk net */
+*** h/tty.h.old Tue May 23 14:51:01 1989
+--- h/tty.h Wed Aug 23 11:30:40 1989
+***************
+*** 70,75 ****
+--- 70,76 ----
+ struct ttychars t_chars; /* tty */
+ struct winsize t_winsize; /* window size */
+ /* be careful of tchars & co. */
++ #ifndef NO_T_CHARS_DEFINES
+ #define t_erase t_chars.tc_erase
+ #define t_kill t_chars.tc_kill
+ #define t_intrc t_chars.tc_intrc
+***************
+*** 84,89 ****
+--- 85,91 ----
+ #define t_flushc t_chars.tc_flushc
+ #define t_werasc t_chars.tc_werasc
+ #define t_lnextc t_chars.tc_lnextc
++ #endif
+ };
+
+ #define TTIPRI 28
+***************
+*** 124,129 ****
+--- 126,132 ----
+ #define TS_LNCH 0x080000 /* next character is literal */
+ #define TS_TYPEN 0x100000 /* retyping suspended input (PENDIN) */
+ #define TS_CNTTB 0x200000 /* counting tab width; leave FLUSHO alone */
++ #define TS_EXTPROC 0x400000 /* external processing of data */
+
+ #define TS_LOCAL (TS_BKSL|TS_QUOT|TS_ERASE|TS_LNCH|TS_TYPEN|TS_CNTTB)
+
+*** sys/tty.c.old Tue May 23 14:52:28 1989
+--- sys/tty.c Thu Aug 24 09:31:49 1989
+***************
+*** 275,280 ****
+--- 275,285 ----
+ */
+ switch (com) {
+
++ /* get internal state - needed for TS_EXTPROC bit */
++ case TIOCGSTATE:
++ *(int *)data = tp->t_state;
++ break;
++
+ /* get discipline number */
+ case TIOCGETD:
+ *(int *)data = tp->t_line;
+***************
+*** 752,757 ****
+--- 757,763 ----
+ */
+ if ((tp->t_state&TS_TYPEN) == 0 && (t_flags&PASS8) == 0)
+ c &= 0177;
++ if ((tp->t_state&TS_EXTPROC) == 0) {
+ /*
+ * Check for literal nexting very first
+ */
+***************
+*** 834,839 ****
+--- 840,846 ----
+ else if (c == '\\')
+ tp->t_state |= TS_BKSL;
+ }
++ }
+
+ /*
+ * Cbreak mode, don't process line editing
+***************
+*** 851,856 ****
+--- 858,864 ----
+ goto endcase;
+ }
+
++ if ((tp->t_state&TS_EXTPROC) == 0) {
+ /*
+ * From here on down cooked mode character
+ * processing takes place.
+***************
+*** 911,916 ****
+--- 919,925 ----
+ goto endcase;
+ }
+ }
++ }
+
+ /*
+ * Check for input buffer overflow
+***************
+*** 933,938 ****
+--- 942,948 ----
+ } else if (tp->t_rocount++ == 0)
+ tp->t_rocol = tp->t_col;
+ tp->t_state &= ~TS_QUOT;
++ if ((tp->t_state&TS_EXTPROC) == 0) {
+ if (c == '\\')
+ tp->t_state |= TS_QUOT;
+ if (tp->t_state&TS_ERASE) {
+***************
+*** 948,953 ****
+--- 958,964 ----
+ i--;
+ }
+ }
++ }
+ }
+ endcase:
+ /*
+***************
+*** 998,1005 ****
+ return (-1);
+ /*
+ * Turn tabs to spaces as required
+ */
+! if (c == '\t' && (tp->t_flags&TBDELAY) == XTABS) {
+ register int s;
+
+ c = 8 - (tp->t_col&7);
+--- 1009,1022 ----
+ return (-1);
+ /*
+ * Turn tabs to spaces as required
++ *
++ * Special case if we have external processing, we don't
++ * do the tab expansion because we'll probably get it
++ * wrong. If tab expansion needs to be done, let it
++ * happen externally.
+ */
+! if ((tp->t_state&TS_EXTPROC) == 0 &&
+! c == '\t' && (tp->t_flags&TBDELAY) == XTABS) {
+ register int s;
+
+ c = 8 - (tp->t_col&7);
+***************
+*** 1497,1503 ****
+ int s;
+ char *nextc();
+
+! if ((tp->t_flags&ECHO) == 0)
+ return;
+ tp->t_flags &= ~FLUSHO;
+ c &= 0377;
+--- 1514,1520 ----
+ int s;
+ char *nextc();
+
+! if ((tp->t_flags&ECHO) == 0 || (tp->t_state&TS_EXTPROC))
+ return;
+ tp->t_flags &= ~FLUSHO;
+ c &= 0377;
+***************
+*** 1618,1624 ****
+
+ if ((tp->t_state&TS_CNTTB) == 0)
+ tp->t_flags &= ~FLUSHO;
+! if ((tp->t_flags&ECHO) == 0)
+ return;
+ c &= 0377;
+ if (tp->t_flags&RAW) {
+--- 1635,1641 ----
+
+ if ((tp->t_state&TS_CNTTB) == 0)
+ tp->t_flags &= ~FLUSHO;
+! if ((tp->t_flags&ECHO) == 0 || (tp->t_state&TS_EXTPROC))
+ return;
+ c &= 0377;
+ if (tp->t_flags&RAW) {
+*** sys/tty_pty.c.old Tue May 23 14:52:43 1989
+--- sys/tty_pty.c Tue Aug 29 18:48:36 1989
+***************
+*** 208,213 ****
+--- 208,214 ----
+ return (EIO);
+ tp->t_oproc = ptsstart;
+ (void)(*linesw[tp->t_line].l_modem)(tp, 1);
++ tp->t_state &= ~TS_EXTPROC;
+ pti = &pt_ioctl[minor(dev)];
+ pti->pt_flags = 0;
+ pti->pt_send = 0;
+***************
+*** 247,252 ****
+--- 248,275 ----
+ error = ureadc((int)pti->pt_send, uio);
+ if (error)
+ return (error);
++ if (pti->pt_send & TIOCPKT_IOCTL) {
++ struct xx {
++ struct sgttyb a;
++ struct tchars b;
++ struct ltchars c;
++ int d;
++ int e;
++ } cb;
++ cb.a.sg_ispeed = tp->t_ispeed;
++ cb.a.sg_ospeed = tp->t_ospeed;
++ cb.a.sg_erase = tp->t_erase;
++ cb.a.sg_kill = tp->t_kill;
++ cb.a.sg_flags = tp->t_flags;
++ bcopy((caddr_t)&tp->t_intrc,
++ (caddr_t)&cb.b, sizeof(cb.b));
++ bcopy((caddr_t)&tp->t_suspc,
++ (caddr_t)&cb.c, sizeof(cb.c));
++ cb.d = tp->t_state;
++ cb.e = ((unsigned)tp->t_flags)>>16;
++ cc = MIN(uio->uio_resid, sizeof(cb));
++ uiomove(&cb, cc, UIO_READ, uio);
++ }
+ pti->pt_send = 0;
+ return (0);
+ }
+***************
+*** 483,488 ****
+--- 506,533 ----
+ * IF CONTROLLER STTY THEN MUST FLUSH TO PREVENT A HANG.
+ * ttywflush(tp) will hang if there are characters in the outq.
+ */
++ if (cmd == TIOCEXT) {
++ /*
++ * When the TS_EXTPROC bit is being toggled, we need
++ * to send an TIOCPKT_IOCTL if the packet driver
++ * is turned on.
++ */
++ if (*(int *)data) {
++ if (pti->pt_flags & PF_PKT) {
++ pti->pt_send |= TIOCPKT_IOCTL;
++ ptcwakeup(tp);
++ }
++ tp->t_state |= TS_EXTPROC;
++ } else {
++ if ((tp->t_state & TS_EXTPROC) &&
++ (pti->pt_flags & PF_PKT)) {
++ pti->pt_send |= TIOCPKT_IOCTL;
++ ptcwakeup(tp);
++ }
++ tp->t_state &= ~TS_EXTPROC;
++ }
++ return (0);
++ } else
+ if (cdevsw[major(dev)].d_open == ptcopen)
+ switch (cmd) {
+
+***************
+*** 525,530 ****
+--- 570,583 ----
+ while (getc(&tp->t_outq) >= 0)
+ ;
+ break;
++
++ case TIOCSIG:
++ if (*(unsigned int *)data >= NSIG)
++ return(EINVAL);
++ if ((tp->t_flags&NOFLSH) == 0)
++ ttyflush(tp, FREAD|FWRITE);
++ gsignal(tp->t_pgrp, *(unsigned int *)data);
++ return(0);
+ }
+ error = ttioctl(tp, cmd, data, flag);
+ /*
+***************
+*** 549,554 ****
+--- 602,624 ----
+ return (0);
+ }
+ error = ENOTTY;
++ }
++ /*
++ * If external processing and packet mode send ioctl packet.
++ */
++ if ((tp->t_state & TS_EXTPROC) && (pti->pt_flags & PF_PKT)) {
++ switch(cmd) {
++ case TIOCSETP:
++ case TIOCSETN:
++ case TIOCSETC:
++ case TIOCSLTC:
++ case TIOCLBIS:
++ case TIOCLBIC:
++ case TIOCLSET:
++ pti->pt_send |= TIOCPKT_IOCTL;
++ default:
++ break;
++ }
+ }
+ stop = (tp->t_flags & RAW) == 0 &&
+ tp->t_stopc == CTRL('s') && tp->t_startc == CTRL('q');
--- /dev/null
+#
+# Copyright (c) 1991 The Regents of the University of California.
+# All rights reserved.
+#
+# %sccs.include.redist.sh
+#
+# @(#)Makefile 5.3 (Berkeley) 3/22/91
+#
+
+LIB= telnet
+SRCS= auth.c encrypt.c genget.c getent.c gettytab.c misc.c
+SRCS+= kerberos.c enc_des.c
+#SRCS+= kerberos5.c
+CFLAGS+= -DENCRYPTION -DAUTHENTICATION
+CFLAGS+= -DKRB4 -DDES_ENCRYPTION -I/usr/include/kerberosIV
+
+.PATH: ${.CURDIR}/../../libexec/getty
+.include <bsd.lib.mk>
+
--- /dev/null
+#
+# Copyright (c) 1991 The Regents of the University of California.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms are permitted provided
+# that: (1) source distributions retain this entire copyright notice and
+# comment, and (2) distributions including binaries display the following
+# acknowledgement: ``This product includes software developed by the
+# University of California, Berkeley and its contributors'' in the
+# documentation or other materials provided with the distribution and in
+# all advertising materials mentioning features or use of this software.
+# Neither the name of the University nor the names of its contributors may
+# be used to endorse or promote products derived from this software without
+# specific prior written permission.
+# THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
+# WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
+# MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+#
+# @(#)Makefile.generic 5.5 (Berkeley) 3/1/91
+#
+
+LIB= libtelnet.a
+SRCS= auth.c encrypt.c genget.c \
+ misc.c enc_des.c \
+ setenv.c getent.c strdup.c strcasecmp.c \
+ strchr.c strrchr.c strftime.c strerror.c \
+ kerberos5.c forward.c \
+ ${LIB_SRC}
+
+OBJS= auth.o encrypt.o genget.o \
+ misc.o enc_des.o kerberos5.o forward.o \
+ ${LIB_OBJ}
+
+TELNET_H= ../arpa/telnet.h
+
+CFLAGS= ${LCCFLAGS} ${DEFINES} ${INCLUDES}
+
+${LIB}: ${OBJS}
+ rm -f ${LIB}
+ ${AR} ${ARFLAGS} ${LIB} `lorder ${OBJS} | tsort`
+ @if [ ${RANLIB} != NONE ]; \
+ then echo ${RANLIB} ${LIB}; ${RANLIB} ${LIB}; fi
+
+install:
+
+clean cleandir:
+ rm -f *.o ${LIB} core a.out
+
+auth.o: ${TELNET_H}
+auth.o: encrypt.h
+auth.o: auth.h
+auth.o: misc-proto.h
+encrypt.o: ${TELNET_H}
+encrypt.o: encrypt.h
+encrypt.o: misc.h
+kerberos.o: ${TELNET_H}
+kerberos.o: encrypt.h
+kerberos.o: auth.h
+kerberos.o: misc.h
+kerberos5.o: ${TELNET_H}
+kerberos5.o: encrypt.h
+kerberos5.o: auth.h
+kerberos5.o: misc.h
+misc.o: misc.h
+enc_des.o: ${TELNET_H}
+enc_des.o: encrypt.h
+enc_des.o: key-proto.h
+enc_des.o: misc-proto.h
--- /dev/null
+#
+# Copyright (c) 1991 The Regents of the University of California.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms are permitted provided
+# that: (1) source distributions retain this entire copyright notice and
+# comment, and (2) distributions including binaries display the following
+# acknowledgement: ``This product includes software developed by the
+# University of California, Berkeley and its contributors'' in the
+# documentation or other materials provided with the distribution and in
+# all advertising materials mentioning features or use of this software.
+# Neither the name of the University nor the names of its contributors may
+# be used to endorse or promote products derived from this software without
+# specific prior written permission.
+# THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
+# WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
+# MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+#
+# @(#)Makefile 5.5 (Berkeley) 3/1/91
+#
+
+#
+# Everything happens in ../Makefile.config and Makefile.generic
+#
+
+all:
+ @-if [ -f ../Config.local ]; \
+ then \
+ echo make -f ../Config.local WHAT=${WHAT} CC="${CC}"; \
+ make -f ../Config.local WHAT=${WHAT} CC="${CC}"; \
+ else \
+ echo make -f ../Config.generic WHAT=${WHAT} CC="${CC}"; \
+ make -f ../Config.generic WHAT=${WHAT} CC="${CC}"; \
+ fi
+
+.DEFAULT:
+ @-if [ -f ../Config.local ]; \
+ then \
+ echo make -f ../Config.local WHAT=${WHAT} CC="${CC}" $@; \
+ make -f ../Config.local WHAT=${WHAT} CC="${CC}" $@; \
+ else \
+ echo make -f ../Config.generic WHAT=${WHAT} CC="${CC}" $@; \
+ make -f ../Config.generic WHAT=${WHAT} CC="${CC}" $@; \
+ fi
--- /dev/null
+/*-
+ * Copyright (c) 1991 The Regents of the University of California.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * @(#)auth-proto.h 5.3 (Berkeley) 12/18/92
+ */
+
+/*
+ * Copyright (C) 1990 by the Massachusetts Institute of Technology
+ *
+ * Export of this software from the United States of America is assumed
+ * to require a specific license from the United States Government.
+ * It is the responsibility of any person or organization contemplating
+ * export to obtain such a license before exporting.
+ *
+ * WITHIN THAT CONSTRAINT, permission to use, copy, modify, and
+ * distribute this software and its documentation for any purpose and
+ * without fee is hereby granted, provided that the above copyright
+ * notice appear in all copies and that both that copyright notice and
+ * this permission notice appear in supporting documentation, and that
+ * the name of M.I.T. not be used in advertising or publicity pertaining
+ * to distribution of the software without specific, written prior
+ * permission. M.I.T. makes no representations about the suitability of
+ * this software for any purpose. It is provided "as is" without express
+ * or implied warranty.
+ */
+
+#if !defined(P)
+#ifdef __STDC__
+#define P(x) x
+#else
+#define P(x) ()
+#endif
+#endif
+
+#if defined(AUTHENTICATION)
+Authenticator *findauthenticator P((int, int));
+
+void auth_init P((char *, int));
+int auth_cmd P((int, char **));
+void auth_request P((void));
+void auth_send P((unsigned char *, int));
+void auth_send_retry P((void));
+void auth_is P((unsigned char *, int));
+void auth_reply P((unsigned char *, int));
+void auth_finished P((Authenticator *, int));
+int auth_wait P((char *));
+void auth_disable_name P((char *));
+void auth_gen_printsub P((unsigned char *, int, unsigned char *, int));
+
+#ifdef KRB4
+int kerberos4_init P((Authenticator *, int));
+int kerberos4_send P((Authenticator *));
+void kerberos4_is P((Authenticator *, unsigned char *, int));
+void kerberos4_reply P((Authenticator *, unsigned char *, int));
+int kerberos4_status P((Authenticator *, char *, int));
+void kerberos4_printsub P((unsigned char *, int, unsigned char *, int));
+#endif
+
+#ifdef KRB5
+int kerberos5_init P((Authenticator *, int));
+int kerberos5_send P((Authenticator *));
+void kerberos5_is P((Authenticator *, unsigned char *, int));
+void kerberos5_reply P((Authenticator *, unsigned char *, int));
+int kerberos5_status P((Authenticator *, char *, int));
+void kerberos5_printsub P((unsigned char *, int, unsigned char *, int));
+void kerberos5_forward P((Authenticator *));
+#endif
+#endif
--- /dev/null
+/*-
+ * Copyright (c) 1991 The Regents of the University of California.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef lint
+static char sccsid[] = "@(#)auth.c 5.3 (Berkeley) 12/18/92";
+#endif /* not lint */
+
+/*
+ * Copyright (C) 1990 by the Massachusetts Institute of Technology
+ *
+ * Export of this software from the United States of America is assumed
+ * to require a specific license from the United States Government.
+ * It is the responsibility of any person or organization contemplating
+ * export to obtain such a license before exporting.
+ *
+ * WITHIN THAT CONSTRAINT, permission to use, copy, modify, and
+ * distribute this software and its documentation for any purpose and
+ * without fee is hereby granted, provided that the above copyright
+ * notice appear in all copies and that both that copyright notice and
+ * this permission notice appear in supporting documentation, and that
+ * the name of M.I.T. not be used in advertising or publicity pertaining
+ * to distribution of the software without specific, written prior
+ * permission. M.I.T. makes no representations about the suitability of
+ * this software for any purpose. It is provided "as is" without express
+ * or implied warranty.
+ */
+
+
+#if defined(AUTHENTICATION)
+#include <stdio.h>
+#include <sys/types.h>
+#include <signal.h>
+#define AUTH_NAMES
+#include <arpa/telnet.h>
+#ifdef __STDC__
+#include <stdlib.h>
+#endif
+#ifdef NO_STRING_H
+#include <strings.h>
+#else
+#include <string.h>
+#endif
+
+#include "encrypt.h"
+#include "auth.h"
+#include "misc-proto.h"
+#include "auth-proto.h"
+
+#define typemask(x) (1<<((x)-1))
+
+#ifdef KRB4_ENCPWD
+extern krb4encpwd_init();
+extern krb4encpwd_send();
+extern krb4encpwd_is();
+extern krb4encpwd_reply();
+extern krb4encpwd_status();
+extern krb4encpwd_printsub();
+#endif
+
+#ifdef RSA_ENCPWD
+extern rsaencpwd_init();
+extern rsaencpwd_send();
+extern rsaencpwd_is();
+extern rsaencpwd_reply();
+extern rsaencpwd_status();
+extern rsaencpwd_printsub();
+#endif
+
+int auth_debug_mode = 0;
+static char *Name = "Noname";
+static int Server = 0;
+static Authenticator *authenticated = 0;
+static int authenticating = 0;
+static int validuser = 0;
+static unsigned char _auth_send_data[256];
+static unsigned char *auth_send_data;
+static int auth_send_cnt = 0;
+
+/*
+ * Authentication types supported. Plese note that these are stored
+ * in priority order, i.e. try the first one first.
+ */
+Authenticator authenticators[] = {
+#ifdef SPX
+ { AUTHTYPE_SPX, AUTH_WHO_CLIENT|AUTH_HOW_MUTUAL,
+ spx_init,
+ spx_send,
+ spx_is,
+ spx_reply,
+ spx_status,
+ spx_printsub },
+ { AUTHTYPE_SPX, AUTH_WHO_CLIENT|AUTH_HOW_ONE_WAY,
+ spx_init,
+ spx_send,
+ spx_is,
+ spx_reply,
+ spx_status,
+ spx_printsub },
+#endif
+#ifdef KRB5
+# ifdef ENCRYPTION
+ { AUTHTYPE_KERBEROS_V5, AUTH_WHO_CLIENT|AUTH_HOW_MUTUAL,
+ kerberos5_init,
+ kerberos5_send,
+ kerberos5_is,
+ kerberos5_reply,
+ kerberos5_status,
+ kerberos5_printsub },
+# endif
+ { AUTHTYPE_KERBEROS_V5, AUTH_WHO_CLIENT|AUTH_HOW_ONE_WAY,
+ kerberos5_init,
+ kerberos5_send,
+ kerberos5_is,
+ kerberos5_reply,
+ kerberos5_status,
+ kerberos5_printsub },
+#endif
+#ifdef KRB4
+# ifdef ENCRYPTION
+ { AUTHTYPE_KERBEROS_V4, AUTH_WHO_CLIENT|AUTH_HOW_MUTUAL,
+ kerberos4_init,
+ kerberos4_send,
+ kerberos4_is,
+ kerberos4_reply,
+ kerberos4_status,
+ kerberos4_printsub },
+# endif
+ { AUTHTYPE_KERBEROS_V4, AUTH_WHO_CLIENT|AUTH_HOW_ONE_WAY,
+ kerberos4_init,
+ kerberos4_send,
+ kerberos4_is,
+ kerberos4_reply,
+ kerberos4_status,
+ kerberos4_printsub },
+#endif
+#ifdef KRB4_ENCPWD
+ { AUTHTYPE_KRB4_ENCPWD, AUTH_WHO_CLIENT|AUTH_HOW_MUTUAL,
+ krb4encpwd_init,
+ krb4encpwd_send,
+ krb4encpwd_is,
+ krb4encpwd_reply,
+ krb4encpwd_status,
+ krb4encpwd_printsub },
+#endif
+#ifdef RSA_ENCPWD
+ { AUTHTYPE_RSA_ENCPWD, AUTH_WHO_CLIENT|AUTH_HOW_ONE_WAY,
+ rsaencpwd_init,
+ rsaencpwd_send,
+ rsaencpwd_is,
+ rsaencpwd_reply,
+ rsaencpwd_status,
+ rsaencpwd_printsub },
+#endif
+ { 0, },
+};
+
+static Authenticator NoAuth = { 0 };
+
+static int i_support = 0;
+static int i_wont_support = 0;
+
+ Authenticator *
+findauthenticator(type, way)
+ int type;
+ int way;
+{
+ Authenticator *ap = authenticators;
+
+ while (ap->type && (ap->type != type || ap->way != way))
+ ++ap;
+ return(ap->type ? ap : 0);
+}
+
+ void
+auth_init(name, server)
+ char *name;
+ int server;
+{
+ Authenticator *ap = authenticators;
+
+ Server = server;
+ Name = name;
+
+ i_support = 0;
+ authenticated = 0;
+ authenticating = 0;
+ while (ap->type) {
+ if (!ap->init || (*ap->init)(ap, server)) {
+ i_support |= typemask(ap->type);
+ if (auth_debug_mode)
+ printf(">>>%s: I support auth type %d %d\r\n",
+ Name,
+ ap->type, ap->way);
+ }
+ ++ap;
+ }
+}
+
+ void
+auth_disable_name(name)
+ char *name;
+{
+ int x;
+ for (x = 0; x < AUTHTYPE_CNT; ++x) {
+ if (!strcasecmp(name, AUTHTYPE_NAME(x))) {
+ i_wont_support |= typemask(x);
+ break;
+ }
+ }
+}
+
+ int
+getauthmask(type, maskp)
+ char *type;
+ int *maskp;
+{
+ register int x;
+
+ if (strcasecmp(type, AUTHTYPE_NAME(0))) {
+ *maskp = -1;
+ return(1);
+ }
+
+ for (x = 1; x < AUTHTYPE_CNT; ++x) {
+ if (!strcasecmp(type, AUTHTYPE_NAME(x))) {
+ *maskp = typemask(x);
+ return(1);
+ }
+ }
+ return(0);
+}
+
+ int
+auth_enable(type)
+ int type;
+{
+ return(auth_onoff(type, 1));
+}
+
+ int
+auth_disable(type)
+ int type;
+{
+ return(auth_onoff(type, 0));
+}
+
+ int
+auth_onoff(type, on)
+ char *type;
+ int on;
+{
+ int mask = -1;
+ Authenticator *ap;
+
+ if (!strcasecmp(type, "?") || !strcasecmp(type, "help")) {
+ printf("auth %s 'type'\n", on ? "enable" : "disable");
+ printf("Where 'type' is one of:\n");
+ printf("\t%s\n", AUTHTYPE_NAME(0));
+ for (ap = authenticators; ap->type; ap++)
+ printf("\t%s\n", AUTHTYPE_NAME(ap->type));
+ return(0);
+ }
+
+ if (!getauthmask(type, &mask)) {
+ printf("%s: invalid authentication type\n", type);
+ return(0);
+ }
+ mask = getauthmask(type, &mask);
+ if (on)
+ i_wont_support &= ~mask;
+ else
+ i_wont_support |= mask;
+ return(1);
+}
+
+ int
+auth_togdebug(on)
+ int on;
+{
+ if (on < 0)
+ auth_debug_mode ^= 1;
+ else
+ auth_debug_mode = on;
+ printf("auth debugging %s\n", auth_debug_mode ? "enabled" : "disabled");
+ return(1);
+}
+
+ int
+auth_status()
+{
+ Authenticator *ap;
+
+ if (i_wont_support == -1)
+ printf("Authentication disabled\n");
+ else
+ printf("Authentication enabled\n");
+
+ for (ap = authenticators; ap->type; ap++)
+ printf("%s: %s\n", AUTHTYPE_NAME(ap->type),
+ (i_wont_support & typemask(ap->type)) ?
+ "disabled" : "enabled");
+ return(1);
+}
+
+/*
+ * This routine is called by the server to start authentication
+ * negotiation.
+ */
+ void
+auth_request()
+{
+ static unsigned char str_request[64] = { IAC, SB,
+ TELOPT_AUTHENTICATION,
+ TELQUAL_SEND, };
+ Authenticator *ap = authenticators;
+ unsigned char *e = str_request + 4;
+
+ if (!authenticating) {
+ authenticating = 1;
+ while (ap->type) {
+ if (i_support & ~i_wont_support & typemask(ap->type)) {
+ if (auth_debug_mode) {
+ printf(">>>%s: Sending type %d %d\r\n",
+ Name, ap->type, ap->way);
+ }
+ *e++ = ap->type;
+ *e++ = ap->way;
+ }
+ ++ap;
+ }
+ *e++ = IAC;
+ *e++ = SE;
+ net_write(str_request, e - str_request);
+ printsub('>', &str_request[2], e - str_request - 2);
+ }
+}
+
+/*
+ * This is called when an AUTH SEND is received.
+ * It should never arrive on the server side (as only the server can
+ * send an AUTH SEND).
+ * You should probably respond to it if you can...
+ *
+ * If you want to respond to the types out of order (i.e. even
+ * if he sends LOGIN KERBEROS and you support both, you respond
+ * with KERBEROS instead of LOGIN (which is against what the
+ * protocol says)) you will have to hack this code...
+ */
+ void
+auth_send(data, cnt)
+ unsigned char *data;
+ int cnt;
+{
+ Authenticator *ap;
+ static unsigned char str_none[] = { IAC, SB, TELOPT_AUTHENTICATION,
+ TELQUAL_IS, AUTHTYPE_NULL, 0,
+ IAC, SE };
+ if (Server) {
+ if (auth_debug_mode) {
+ printf(">>>%s: auth_send called!\r\n", Name);
+ }
+ return;
+ }
+
+ if (auth_debug_mode) {
+ printf(">>>%s: auth_send got:", Name);
+ printd(data, cnt); printf("\r\n");
+ }
+
+ /*
+ * Save the data, if it is new, so that we can continue looking
+ * at it if the authorization we try doesn't work
+ */
+ if (data < _auth_send_data ||
+ data > _auth_send_data + sizeof(_auth_send_data)) {
+ auth_send_cnt = cnt > sizeof(_auth_send_data)
+ ? sizeof(_auth_send_data)
+ : cnt;
+ bcopy((void *)data, (void *)_auth_send_data, auth_send_cnt);
+ auth_send_data = _auth_send_data;
+ } else {
+ /*
+ * This is probably a no-op, but we just make sure
+ */
+ auth_send_data = data;
+ auth_send_cnt = cnt;
+ }
+ while ((auth_send_cnt -= 2) >= 0) {
+ if (auth_debug_mode)
+ printf(">>>%s: He supports %d\r\n",
+ Name, *auth_send_data);
+ if ((i_support & ~i_wont_support) & typemask(*auth_send_data)) {
+ ap = findauthenticator(auth_send_data[0],
+ auth_send_data[1]);
+ if (ap && ap->send) {
+ if (auth_debug_mode)
+ printf(">>>%s: Trying %d %d\r\n",
+ Name, auth_send_data[0],
+ auth_send_data[1]);
+ if ((*ap->send)(ap)) {
+ /*
+ * Okay, we found one we like
+ * and did it.
+ * we can go home now.
+ */
+ if (auth_debug_mode)
+ printf(">>>%s: Using type %d\r\n",
+ Name, *auth_send_data);
+ auth_send_data += 2;
+ return;
+ }
+ }
+ /* else
+ * just continue on and look for the
+ * next one if we didn't do anything.
+ */
+ }
+ auth_send_data += 2;
+ }
+ net_write(str_none, sizeof(str_none));
+ printsub('>', &str_none[2], sizeof(str_none) - 2);
+ if (auth_debug_mode)
+ printf(">>>%s: Sent failure message\r\n", Name);
+ auth_finished(0, AUTH_REJECT);
+#ifdef KANNAN
+ /*
+ * We requested strong authentication, however no mechanisms worked.
+ * Therefore, exit on client end.
+ */
+ printf("Unable to securely authenticate user ... exit\n");
+ exit(0);
+#endif /* KANNAN */
+}
+
+ void
+auth_send_retry()
+{
+ /*
+ * if auth_send_cnt <= 0 then auth_send will end up rejecting
+ * the authentication and informing the other side of this.
+ */
+ auth_send(auth_send_data, auth_send_cnt);
+}
+
+ void
+auth_is(data, cnt)
+ unsigned char *data;
+ int cnt;
+{
+ Authenticator *ap;
+
+ if (cnt < 2)
+ return;
+
+ if (data[0] == AUTHTYPE_NULL) {
+ auth_finished(0, AUTH_REJECT);
+ return;
+ }
+
+ if (ap = findauthenticator(data[0], data[1])) {
+ if (ap->is)
+ (*ap->is)(ap, data+2, cnt-2);
+ } else if (auth_debug_mode)
+ printf(">>>%s: Invalid authentication in IS: %d\r\n",
+ Name, *data);
+}
+
+ void
+auth_reply(data, cnt)
+ unsigned char *data;
+ int cnt;
+{
+ Authenticator *ap;
+
+ if (cnt < 2)
+ return;
+
+ if (ap = findauthenticator(data[0], data[1])) {
+ if (ap->reply)
+ (*ap->reply)(ap, data+2, cnt-2);
+ } else if (auth_debug_mode)
+ printf(">>>%s: Invalid authentication in SEND: %d\r\n",
+ Name, *data);
+}
+
+ void
+auth_name(data, cnt)
+ unsigned char *data;
+ int cnt;
+{
+ Authenticator *ap;
+ unsigned char savename[256];
+
+ if (cnt < 1) {
+ if (auth_debug_mode)
+ printf(">>>%s: Empty name in NAME\r\n", Name);
+ return;
+ }
+ if (cnt > sizeof(savename) - 1) {
+ if (auth_debug_mode)
+ printf(">>>%s: Name in NAME (%d) exceeds %d length\r\n",
+ Name, cnt, sizeof(savename)-1);
+ return;
+ }
+ bcopy((void *)data, (void *)savename, cnt);
+ savename[cnt] = '\0'; /* Null terminate */
+ if (auth_debug_mode)
+ printf(">>>%s: Got NAME [%s]\r\n", Name, savename);
+ auth_encrypt_user(savename);
+}
+
+ int
+auth_sendname(cp, len)
+ unsigned char *cp;
+ int len;
+{
+ static unsigned char str_request[256+6]
+ = { IAC, SB, TELOPT_AUTHENTICATION, TELQUAL_NAME, };
+ register unsigned char *e = str_request + 4;
+ register unsigned char *ee = &str_request[sizeof(str_request)-2];
+
+ while (--len >= 0) {
+ if ((*e++ = *cp++) == IAC)
+ *e++ = IAC;
+ if (e >= ee)
+ return(0);
+ }
+ *e++ = IAC;
+ *e++ = SE;
+ net_write(str_request, e - str_request);
+ printsub('>', &str_request[2], e - &str_request[2]);
+ return(1);
+}
+
+ void
+auth_finished(ap, result)
+ Authenticator *ap;
+ int result;
+{
+ if (!(authenticated = ap))
+ authenticated = &NoAuth;
+ validuser = result;
+}
+
+ /* ARGSUSED */
+ static void
+auth_intr(sig)
+ int sig;
+{
+ auth_finished(0, AUTH_REJECT);
+}
+
+ int
+auth_wait(name)
+ char *name;
+{
+ if (auth_debug_mode)
+ printf(">>>%s: in auth_wait.\r\n", Name);
+
+ if (Server && !authenticating)
+ return(0);
+
+ (void) signal(SIGALRM, auth_intr);
+ alarm(30);
+ while (!authenticated)
+ if (telnet_spin())
+ break;
+ alarm(0);
+ (void) signal(SIGALRM, SIG_DFL);
+
+ /*
+ * Now check to see if the user is valid or not
+ */
+ if (!authenticated || authenticated == &NoAuth)
+ return(AUTH_REJECT);
+
+ if (validuser == AUTH_VALID)
+ validuser = AUTH_USER;
+
+ if (authenticated->status)
+ validuser = (*authenticated->status)(authenticated,
+ name, validuser);
+ return(validuser);
+}
+
+ void
+auth_debug(mode)
+ int mode;
+{
+ auth_debug_mode = mode;
+}
+
+ void
+auth_printsub(data, cnt, buf, buflen)
+ unsigned char *data, *buf;
+ int cnt, buflen;
+{
+ Authenticator *ap;
+
+ if ((ap = findauthenticator(data[1], data[2])) && ap->printsub)
+ (*ap->printsub)(data, cnt, buf, buflen);
+ else
+ auth_gen_printsub(data, cnt, buf, buflen);
+}
+
+ void
+auth_gen_printsub(data, cnt, buf, buflen)
+ unsigned char *data, *buf;
+ int cnt, buflen;
+{
+ register unsigned char *cp;
+ unsigned char tbuf[16];
+
+ cnt -= 3;
+ data += 3;
+ buf[buflen-1] = '\0';
+ buf[buflen-2] = '*';
+ buflen -= 2;
+ for (; cnt > 0; cnt--, data++) {
+ sprintf((char *)tbuf, " %d", *data);
+ for (cp = tbuf; *cp && buflen > 0; --buflen)
+ *buf++ = *cp++;
+ if (buflen <= 0)
+ return;
+ }
+ *buf = '\0';
+}
+#endif
--- /dev/null
+/*-
+ * Copyright (c) 1991 The Regents of the University of California.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * @(#)auth.h 5.1 (Berkeley) 2/28/91
+ */
+
+/*
+ * Copyright (C) 1990 by the Massachusetts Institute of Technology
+ *
+ * Export of this software from the United States of America is assumed
+ * to require a specific license from the United States Government.
+ * It is the responsibility of any person or organization contemplating
+ * export to obtain such a license before exporting.
+ *
+ * WITHIN THAT CONSTRAINT, permission to use, copy, modify, and
+ * distribute this software and its documentation for any purpose and
+ * without fee is hereby granted, provided that the above copyright
+ * notice appear in all copies and that both that copyright notice and
+ * this permission notice appear in supporting documentation, and that
+ * the name of M.I.T. not be used in advertising or publicity pertaining
+ * to distribution of the software without specific, written prior
+ * permission. M.I.T. makes no representations about the suitability of
+ * this software for any purpose. It is provided "as is" without express
+ * or implied warranty.
+ */
+
+#ifndef __AUTH__
+#define __AUTH__
+
+#define AUTH_REJECT 0 /* Rejected */
+#define AUTH_UNKNOWN 1 /* We don't know who he is, but he's okay */
+#define AUTH_OTHER 2 /* We know him, but not his name */
+#define AUTH_USER 3 /* We know he name */
+#define AUTH_VALID 4 /* We know him, and he needs no password */
+
+#if !defined(P)
+#ifdef __STDC__
+#define P(x) x
+#else
+#define P(x) ()
+#endif
+#endif
+
+typedef struct XauthP {
+ int type;
+ int way;
+ int (*init) P((struct XauthP *, int));
+ int (*send) P((struct XauthP *));
+ void (*is) P((struct XauthP *, unsigned char *, int));
+ void (*reply) P((struct XauthP *, unsigned char *, int));
+ int (*status) P((struct XauthP *, char *, int));
+ void (*printsub) P((unsigned char *, int, unsigned char *, int));
+} Authenticator;
+
+#include "auth-proto.h"
+
+extern auth_debug_mode;
+#endif
--- /dev/null
+/*-
+ * Copyright (c) 1991 The Regents of the University of California.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * @(#)enc-proto.h 5.3 (Berkeley) 12/18/92
+ */
+
+/*
+ * Copyright (C) 1990 by the Massachusetts Institute of Technology
+ *
+ * Export of this software from the United States of America is assumed
+ * to require a specific license from the United States Government.
+ * It is the responsibility of any person or organization contemplating
+ * export to obtain such a license before exporting.
+ *
+ * WITHIN THAT CONSTRAINT, permission to use, copy, modify, and
+ * distribute this software and its documentation for any purpose and
+ * without fee is hereby granted, provided that the above copyright
+ * notice appear in all copies and that both that copyright notice and
+ * this permission notice appear in supporting documentation, and that
+ * the name of M.I.T. not be used in advertising or publicity pertaining
+ * to distribution of the software without specific, written prior
+ * permission. M.I.T. makes no representations about the suitability of
+ * this software for any purpose. It is provided "as is" without express
+ * or implied warranty.
+ */
+#if !defined(P)
+#ifdef __STDC__
+#define P(x) x
+#else
+#define P(x) ()
+#endif
+#endif
+
+#if defined(ENCRYPTION)
+void encrypt_init P((char *, int));
+Encryptions *findencryption P((int));
+void encrypt_send_supprt P((void));
+void encrypt_auto P((int));
+void decrypt_auto P((int));
+void encrypt_is P((unsigned char *, int));
+void encrypt_reply P((unsigned char *, int));
+void encrypt_start_input P((int));
+void encrypt_session_key P((Session_Key *, int));
+void encrypt_end_input P((void));
+void encrypt_start_output P((int));
+void encrypt_end_output P((void));
+void encrypt_send_request_start P((void));
+void encrypt_send_request_end P((void));
+void encrypt_send_end P((void));
+void encrypt_wait P((void));
+void encrypt_send_support P((void));
+void encrypt_send_keyid P((int, unsigned char *, int, int));
+int net_write P((unsigned char *, int));
+
+#ifdef TELENTD
+void encrypt_wait P((void));
+#else
+int encrypt_cmd P((int, char **));
+void encrypt_display P((void));
+#endif
+
+void krbdes_encrypt P((unsigned char *, int));
+int krbdes_decrypt P((int));
+int krbdes_is P((unsigned char *, int));
+int krbdes_reply P((unsigned char *, int));
+void krbdes_init P((int));
+int krbdes_start P((int, int));
+void krbdes_session P((Session_Key *, int));
+void krbdes_printsub P((unsigned char *, int, unsigned char *, int));
+
+void cfb64_encrypt P((unsigned char *, int));
+int cfb64_decrypt P((int));
+void cfb64_init P((int));
+int cfb64_start P((int, int));
+int cfb64_is P((unsigned char *, int));
+int cfb64_reply P((unsigned char *, int));
+void cfb64_session P((Session_Key *, int));
+int cfb64_keyid P((int, unsigned char *, int *));
+void cfb64_printsub P((unsigned char *, int, unsigned char *, int));
+
+void ofb64_encrypt P((unsigned char *, int));
+int ofb64_decrypt P((int));
+void ofb64_init P((int));
+int ofb64_start P((int, int));
+int ofb64_is P((unsigned char *, int));
+int ofb64_reply P((unsigned char *, int));
+void ofb64_session P((Session_Key *, int));
+int ofb64_keyid P((int, unsigned char *, int *));
+void ofb64_printsub P((unsigned char *, int, unsigned char *, int));
+
+int des_new_random_key P((Block));
+void des_set_random_generator_seed P((Block));
+void des_key_sched P((Block, Schedule));
+void des_ecb_encrypt P((Block, Block, Schedule, int));
+int des_string_to_key P((char *, Block));
+#endif
--- /dev/null
+/*-
+ * Copyright (c) 1991 The Regents of the University of California.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef lint
+static char sccsid[] = "@(#)enc_des.c 5.2 (Berkeley) 12/18/92";
+#endif /* not lint */
+
+#if defined(AUTHENTICATION) && defined(ENCRYPTION) && defined(DES_ENCRYPTION)
+#include <arpa/telnet.h>
+#include <stdio.h>
+#ifdef __STDC__
+#include <stdlib.h>
+#endif
+
+#include "encrypt.h"
+#include "key-proto.h"
+#include "misc-proto.h"
+
+extern encrypt_debug_mode;
+
+#define CFB 0
+#define OFB 1
+
+#define NO_SEND_IV 1
+#define NO_RECV_IV 2
+#define NO_KEYID 4
+#define IN_PROGRESS (NO_SEND_IV|NO_RECV_IV|NO_KEYID)
+#define SUCCESS 0
+#define FAILED -1
+
+
+struct fb {
+ Block krbdes_key;
+ Schedule krbdes_sched;
+ Block temp_feed;
+ unsigned char fb_feed[64];
+ int need_start;
+ int state[2];
+ int keyid[2];
+ int once;
+ struct stinfo {
+ Block str_output;
+ Block str_feed;
+ Block str_iv;
+ Block str_ikey;
+ Schedule str_sched;
+ int str_index;
+ int str_flagshift;
+ } streams[2];
+};
+
+static struct fb fb[2];
+
+struct keyidlist {
+ char *keyid;
+ int keyidlen;
+ char *key;
+ int keylen;
+ int flags;
+} keyidlist [] = {
+ { "\0", 1, 0, 0, 0 }, /* default key of zero */
+ { 0, 0, 0, 0, 0 }
+};
+
+#define KEYFLAG_MASK 03
+
+#define KEYFLAG_NOINIT 00
+#define KEYFLAG_INIT 01
+#define KEYFLAG_OK 02
+#define KEYFLAG_BAD 03
+
+#define KEYFLAG_SHIFT 2
+
+#define SHIFT_VAL(a,b) (KEYFLAG_SHIFT*((a)+((b)*2)))
+
+#define FB64_IV 1
+#define FB64_IV_OK 2
+#define FB64_IV_BAD 3
+
+
+void fb64_stream_iv P((Block, struct stinfo *));
+void fb64_init P((struct fb *));
+int fb64_start P((struct fb *, int, int));
+int fb64_is P((unsigned char *, int, struct fb *));
+int fb64_reply P((unsigned char *, int, struct fb *));
+void fb64_session P((Session_Key *, int, struct fb *));
+void fb64_stream_key P((Block, struct stinfo *));
+int fb64_keyid P((int, unsigned char *, int *, struct fb *));
+
+ void
+cfb64_init(server)
+ int server;
+{
+ fb64_init(&fb[CFB]);
+ fb[CFB].fb_feed[4] = ENCTYPE_DES_CFB64;
+ fb[CFB].streams[0].str_flagshift = SHIFT_VAL(0, CFB);
+ fb[CFB].streams[1].str_flagshift = SHIFT_VAL(1, CFB);
+}
+
+ void
+ofb64_init(server)
+ int server;
+{
+ fb64_init(&fb[OFB]);
+ fb[OFB].fb_feed[4] = ENCTYPE_DES_OFB64;
+ fb[CFB].streams[0].str_flagshift = SHIFT_VAL(0, OFB);
+ fb[CFB].streams[1].str_flagshift = SHIFT_VAL(1, OFB);
+}
+
+ void
+fb64_init(fbp)
+ register struct fb *fbp;
+{
+ bzero((void *)fbp, sizeof(*fbp));
+ fbp->state[0] = fbp->state[1] = FAILED;
+ fbp->fb_feed[0] = IAC;
+ fbp->fb_feed[1] = SB;
+ fbp->fb_feed[2] = TELOPT_ENCRYPT;
+ fbp->fb_feed[3] = ENCRYPT_IS;
+}
+
+/*
+ * Returns:
+ * -1: some error. Negotiation is done, encryption not ready.
+ * 0: Successful, initial negotiation all done.
+ * 1: successful, negotiation not done yet.
+ * 2: Not yet. Other things (like getting the key from
+ * Kerberos) have to happen before we can continue.
+ */
+ int
+cfb64_start(dir, server)
+ int dir;
+ int server;
+{
+ return(fb64_start(&fb[CFB], dir, server));
+}
+ int
+ofb64_start(dir, server)
+ int dir;
+ int server;
+{
+ return(fb64_start(&fb[OFB], dir, server));
+}
+
+ static int
+fb64_start(fbp, dir, server)
+ struct fb *fbp;
+ int dir;
+ int server;
+{
+ Block b;
+ int x;
+ unsigned char *p;
+ register int state;
+
+ switch (dir) {
+ case DIR_DECRYPT:
+ /*
+ * This is simply a request to have the other side
+ * start output (our input). He will negotiate an
+ * IV so we need not look for it.
+ */
+ state = fbp->state[dir-1];
+ if (state == FAILED)
+ state = IN_PROGRESS;
+ break;
+
+ case DIR_ENCRYPT:
+ state = fbp->state[dir-1];
+ if (state == FAILED)
+ state = IN_PROGRESS;
+ else if ((state & NO_SEND_IV) == 0)
+ break;
+
+ if (!VALIDKEY(fbp->krbdes_key)) {
+ fbp->need_start = 1;
+ break;
+ }
+ state &= ~NO_SEND_IV;
+ state |= NO_RECV_IV;
+ if (encrypt_debug_mode)
+ printf("Creating new feed\r\n");
+ /*
+ * Create a random feed and send it over.
+ */
+ des_new_random_key(fbp->temp_feed);
+ des_ecb_encrypt(fbp->temp_feed, fbp->temp_feed,
+ fbp->krbdes_sched, 1);
+ p = fbp->fb_feed + 3;
+ *p++ = ENCRYPT_IS;
+ p++;
+ *p++ = FB64_IV;
+ for (x = 0; x < sizeof(Block); ++x) {
+ if ((*p++ = fbp->temp_feed[x]) == IAC)
+ *p++ = IAC;
+ }
+ *p++ = IAC;
+ *p++ = SE;
+ printsub('>', &fbp->fb_feed[2], p - &fbp->fb_feed[2]);
+ net_write(fbp->fb_feed, p - fbp->fb_feed);
+ break;
+ default:
+ return(FAILED);
+ }
+ return(fbp->state[dir-1] = state);
+}
+
+/*
+ * Returns:
+ * -1: some error. Negotiation is done, encryption not ready.
+ * 0: Successful, initial negotiation all done.
+ * 1: successful, negotiation not done yet.
+ */
+ int
+cfb64_is(data, cnt)
+ unsigned char *data;
+ int cnt;
+{
+ return(fb64_is(data, cnt, &fb[CFB]));
+}
+ int
+ofb64_is(data, cnt)
+ unsigned char *data;
+ int cnt;
+{
+ return(fb64_is(data, cnt, &fb[OFB]));
+}
+
+ int
+fb64_is(data, cnt, fbp)
+ unsigned char *data;
+ int cnt;
+ struct fb *fbp;
+{
+ int x;
+ unsigned char *p;
+ Block b;
+ register int state = fbp->state[DIR_DECRYPT-1];
+
+ if (cnt-- < 1)
+ goto failure;
+
+ switch (*data++) {
+ case FB64_IV:
+ if (cnt != sizeof(Block)) {
+ if (encrypt_debug_mode)
+ printf("CFB64: initial vector failed on size\r\n");
+ state = FAILED;
+ goto failure;
+ }
+
+ if (encrypt_debug_mode)
+ printf("CFB64: initial vector received\r\n");
+
+ if (encrypt_debug_mode)
+ printf("Initializing Decrypt stream\r\n");
+
+ fb64_stream_iv((void *)data, &fbp->streams[DIR_DECRYPT-1]);
+
+ p = fbp->fb_feed + 3;
+ *p++ = ENCRYPT_REPLY;
+ p++;
+ *p++ = FB64_IV_OK;
+ *p++ = IAC;
+ *p++ = SE;
+ printsub('>', &fbp->fb_feed[2], p - &fbp->fb_feed[2]);
+ net_write(fbp->fb_feed, p - fbp->fb_feed);
+
+ state = fbp->state[DIR_DECRYPT-1] = IN_PROGRESS;
+ break;
+
+ default:
+ if (encrypt_debug_mode) {
+ printf("Unknown option type: %d\r\n", *(data-1));
+ printd(data, cnt);
+ printf("\r\n");
+ }
+ /* FALL THROUGH */
+ failure:
+ /*
+ * We failed. Send an FB64_IV_BAD option
+ * to the other side so it will know that
+ * things failed.
+ */
+ p = fbp->fb_feed + 3;
+ *p++ = ENCRYPT_REPLY;
+ p++;
+ *p++ = FB64_IV_BAD;
+ *p++ = IAC;
+ *p++ = SE;
+ printsub('>', &fbp->fb_feed[2], p - &fbp->fb_feed[2]);
+ net_write(fbp->fb_feed, p - fbp->fb_feed);
+
+ break;
+ }
+ return(fbp->state[DIR_DECRYPT-1] = state);
+}
+
+/*
+ * Returns:
+ * -1: some error. Negotiation is done, encryption not ready.
+ * 0: Successful, initial negotiation all done.
+ * 1: successful, negotiation not done yet.
+ */
+ int
+cfb64_reply(data, cnt)
+ unsigned char *data;
+ int cnt;
+{
+ return(fb64_reply(data, cnt, &fb[CFB]));
+}
+ int
+ofb64_reply(data, cnt)
+ unsigned char *data;
+ int cnt;
+{
+ return(fb64_reply(data, cnt, &fb[OFB]));
+}
+
+
+ int
+fb64_reply(data, cnt, fbp)
+ unsigned char *data;
+ int cnt;
+ struct fb *fbp;
+{
+ int x;
+ unsigned char *p;
+ Block b;
+ register int state = fbp->state[DIR_ENCRYPT-1];
+
+ if (cnt-- < 1)
+ goto failure;
+
+ switch (*data++) {
+ case FB64_IV_OK:
+ fb64_stream_iv(fbp->temp_feed, &fbp->streams[DIR_ENCRYPT-1]);
+ if (state == FAILED)
+ state = IN_PROGRESS;
+ state &= ~NO_RECV_IV;
+ encrypt_send_keyid(DIR_ENCRYPT, "\0", 1, 1);
+ break;
+
+ case FB64_IV_BAD:
+ bzero(fbp->temp_feed, sizeof(Block));
+ fb64_stream_iv(fbp->temp_feed, &fbp->streams[DIR_ENCRYPT-1]);
+ state = FAILED;
+ break;
+
+ default:
+ if (encrypt_debug_mode) {
+ printf("Unknown option type: %d\r\n", data[-1]);
+ printd(data, cnt);
+ printf("\r\n");
+ }
+ /* FALL THROUGH */
+ failure:
+ state = FAILED;
+ break;
+ }
+ return(fbp->state[DIR_ENCRYPT-1] = state);
+}
+
+ void
+cfb64_session(key, server)
+ Session_Key *key;
+ int server;
+{
+ fb64_session(key, server, &fb[CFB]);
+}
+
+ void
+ofb64_session(key, server)
+ Session_Key *key;
+ int server;
+{
+ fb64_session(key, server, &fb[OFB]);
+}
+
+ static void
+fb64_session(key, server, fbp)
+ Session_Key *key;
+ int server;
+ struct fb *fbp;
+{
+
+ if (!key || key->type != SK_DES) {
+ if (encrypt_debug_mode)
+ printf("Can't set krbdes's session key (%d != %d)\r\n",
+ key ? key->type : -1, SK_DES);
+ return;
+ }
+ bcopy((void *)key->data, (void *)fbp->krbdes_key, sizeof(Block));
+
+ fb64_stream_key(fbp->krbdes_key, &fbp->streams[DIR_ENCRYPT-1]);
+ fb64_stream_key(fbp->krbdes_key, &fbp->streams[DIR_DECRYPT-1]);
+
+ if (fbp->once == 0) {
+ des_set_random_generator_seed(fbp->krbdes_key);
+ fbp->once = 1;
+ }
+ des_key_sched(fbp->krbdes_key, fbp->krbdes_sched);
+ /*
+ * Now look to see if krbdes_start() was was waiting for
+ * the key to show up. If so, go ahead an call it now
+ * that we have the key.
+ */
+ if (fbp->need_start) {
+ fbp->need_start = 0;
+ fb64_start(fbp, DIR_ENCRYPT, server);
+ }
+}
+
+/*
+ * We only accept a keyid of 0. If we get a keyid of
+ * 0, then mark the state as SUCCESS.
+ */
+ int
+cfb64_keyid(dir, kp, lenp)
+ int dir, *lenp;
+ unsigned char *kp;
+{
+ return(fb64_keyid(dir, kp, lenp, &fb[CFB]));
+}
+
+ int
+ofb64_keyid(dir, kp, lenp)
+ int dir, *lenp;
+ unsigned char *kp;
+{
+ return(fb64_keyid(dir, kp, lenp, &fb[OFB]));
+}
+
+ int
+fb64_keyid(dir, kp, lenp, fbp)
+ int dir, *lenp;
+ unsigned char *kp;
+ struct fb *fbp;
+{
+ register int state = fbp->state[dir-1];
+
+ if (*lenp != 1 || (*kp != '\0')) {
+ *lenp = 0;
+ return(state);
+ }
+
+ if (state == FAILED)
+ state = IN_PROGRESS;
+
+ state &= ~NO_KEYID;
+
+ return(fbp->state[dir-1] = state);
+}
+
+ void
+fb64_printsub(data, cnt, buf, buflen, type)
+ unsigned char *data, *buf, *type;
+ int cnt, buflen;
+{
+ char lbuf[32];
+ register int i;
+ char *cp;
+
+ buf[buflen-1] = '\0'; /* make sure it's NULL terminated */
+ buflen -= 1;
+
+ switch(data[2]) {
+ case FB64_IV:
+ sprintf(lbuf, "%s_IV", type);
+ cp = lbuf;
+ goto common;
+
+ case FB64_IV_OK:
+ sprintf(lbuf, "%s_IV_OK", type);
+ cp = lbuf;
+ goto common;
+
+ case FB64_IV_BAD:
+ sprintf(lbuf, "%s_IV_BAD", type);
+ cp = lbuf;
+ goto common;
+
+ default:
+ sprintf(lbuf, " %d (unknown)", data[2]);
+ cp = lbuf;
+ common:
+ for (; (buflen > 0) && (*buf = *cp++); buf++)
+ buflen--;
+ for (i = 3; i < cnt; i++) {
+ sprintf(lbuf, " %d", data[i]);
+ for (cp = lbuf; (buflen > 0) && (*buf = *cp++); buf++)
+ buflen--;
+ }
+ break;
+ }
+}
+
+ void
+cfb64_printsub(data, cnt, buf, buflen)
+ unsigned char *data, *buf;
+ int cnt, buflen;
+{
+ fb64_printsub(data, cnt, buf, buflen, "CFB64");
+}
+
+ void
+ofb64_printsub(data, cnt, buf, buflen)
+ unsigned char *data, *buf;
+ int cnt, buflen;
+{
+ fb64_printsub(data, cnt, buf, buflen, "OFB64");
+}
+
+ void
+fb64_stream_iv(seed, stp)
+ Block seed;
+ register struct stinfo *stp;
+{
+
+ bcopy((void *)seed, (void *)stp->str_iv, sizeof(Block));
+ bcopy((void *)seed, (void *)stp->str_output, sizeof(Block));
+
+ des_key_sched(stp->str_ikey, stp->str_sched);
+
+ stp->str_index = sizeof(Block);
+}
+
+ void
+fb64_stream_key(key, stp)
+ Block key;
+ register struct stinfo *stp;
+{
+ bcopy((void *)key, (void *)stp->str_ikey, sizeof(Block));
+ des_key_sched(key, stp->str_sched);
+
+ bcopy((void *)stp->str_iv, (void *)stp->str_output, sizeof(Block));
+
+ stp->str_index = sizeof(Block);
+}
+
+/*
+ * DES 64 bit Cipher Feedback
+ *
+ * key --->+-----+
+ * +->| DES |--+
+ * | +-----+ |
+ * | v
+ * INPUT --(--------->(+)+---> DATA
+ * | |
+ * +-------------+
+ *
+ *
+ * Given:
+ * iV: Initial vector, 64 bits (8 bytes) long.
+ * Dn: the nth chunk of 64 bits (8 bytes) of data to encrypt (decrypt).
+ * On: the nth chunk of 64 bits (8 bytes) of encrypted (decrypted) output.
+ *
+ * V0 = DES(iV, key)
+ * On = Dn ^ Vn
+ * V(n+1) = DES(On, key)
+ */
+
+ void
+cfb64_encrypt(s, c)
+ register unsigned char *s;
+ int c;
+{
+ register struct stinfo *stp = &fb[CFB].streams[DIR_ENCRYPT-1];
+ register int index;
+
+ index = stp->str_index;
+ while (c-- > 0) {
+ if (index == sizeof(Block)) {
+ Block b;
+ des_ecb_encrypt(stp->str_output, b, stp->str_sched, 1);
+ bcopy((void *)b, (void *)stp->str_feed, sizeof(Block));
+ index = 0;
+ }
+
+ /* On encryption, we store (feed ^ data) which is cypher */
+ *s = stp->str_output[index] = (stp->str_feed[index] ^ *s);
+ s++;
+ index++;
+ }
+ stp->str_index = index;
+}
+
+ int
+cfb64_decrypt(data)
+ int data;
+{
+ register struct stinfo *stp = &fb[CFB].streams[DIR_DECRYPT-1];
+ int index;
+
+ if (data == -1) {
+ /*
+ * Back up one byte. It is assumed that we will
+ * never back up more than one byte. If we do, this
+ * may or may not work.
+ */
+ if (stp->str_index)
+ --stp->str_index;
+ return(0);
+ }
+
+ index = stp->str_index++;
+ if (index == sizeof(Block)) {
+ Block b;
+ des_ecb_encrypt(stp->str_output, b, stp->str_sched, 1);
+ bcopy((void *)b, (void *)stp->str_feed, sizeof(Block));
+ stp->str_index = 1; /* Next time will be 1 */
+ index = 0; /* But now use 0 */
+ }
+
+ /* On decryption we store (data) which is cypher. */
+ stp->str_output[index] = data;
+ return(data ^ stp->str_feed[index]);
+}
+
+/*
+ * DES 64 bit Output Feedback
+ *
+ * key --->+-----+
+ * +->| DES |--+
+ * | +-----+ |
+ * +-----------+
+ * v
+ * INPUT -------->(+) ----> DATA
+ *
+ * Given:
+ * iV: Initial vector, 64 bits (8 bytes) long.
+ * Dn: the nth chunk of 64 bits (8 bytes) of data to encrypt (decrypt).
+ * On: the nth chunk of 64 bits (8 bytes) of encrypted (decrypted) output.
+ *
+ * V0 = DES(iV, key)
+ * V(n+1) = DES(Vn, key)
+ * On = Dn ^ Vn
+ */
+ void
+ofb64_encrypt(s, c)
+ register unsigned char *s;
+ int c;
+{
+ register struct stinfo *stp = &fb[OFB].streams[DIR_ENCRYPT-1];
+ register int index;
+
+ index = stp->str_index;
+ while (c-- > 0) {
+ if (index == sizeof(Block)) {
+ Block b;
+ des_ecb_encrypt(stp->str_feed, b, stp->str_sched, 1);
+ bcopy((void *)b, (void *)stp->str_feed, sizeof(Block));
+ index = 0;
+ }
+ *s++ ^= stp->str_feed[index];
+ index++;
+ }
+ stp->str_index = index;
+}
+
+ int
+ofb64_decrypt(data)
+ int data;
+{
+ register struct stinfo *stp = &fb[OFB].streams[DIR_DECRYPT-1];
+ int index;
+
+ if (data == -1) {
+ /*
+ * Back up one byte. It is assumed that we will
+ * never back up more than one byte. If we do, this
+ * may or may not work.
+ */
+ if (stp->str_index)
+ --stp->str_index;
+ return(0);
+ }
+
+ index = stp->str_index++;
+ if (index == sizeof(Block)) {
+ Block b;
+ des_ecb_encrypt(stp->str_feed, b, stp->str_sched, 1);
+ bcopy((void *)b, (void *)stp->str_feed, sizeof(Block));
+ stp->str_index = 1; /* Next time will be 1 */
+ index = 0; /* But now use 0 */
+ }
+
+ return(data ^ stp->str_feed[index]);
+}
+#endif
--- /dev/null
+/*-
+ * Copyright (c) 1991 The Regents of the University of California.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef lint
+static char sccsid[] = "@(#)encrypt.c 5.3 (Berkeley) 12/18/92";
+#endif /* not lint */
+
+/*
+ * Copyright (C) 1990 by the Massachusetts Institute of Technology
+ *
+ * Export of this software from the United States of America is assumed
+ * to require a specific license from the United States Government.
+ * It is the responsibility of any person or organization contemplating
+ * export to obtain such a license before exporting.
+ *
+ * WITHIN THAT CONSTRAINT, permission to use, copy, modify, and
+ * distribute this software and its documentation for any purpose and
+ * without fee is hereby granted, provided that the above copyright
+ * notice appear in all copies and that both that copyright notice and
+ * this permission notice appear in supporting documentation, and that
+ * the name of M.I.T. not be used in advertising or publicity pertaining
+ * to distribution of the software without specific, written prior
+ * permission. M.I.T. makes no representations about the suitability of
+ * this software for any purpose. It is provided "as is" without express
+ * or implied warranty.
+ */
+
+#if defined(ENCRYPTION)
+
+#define ENCRYPT_NAMES
+#include <arpa/telnet.h>
+
+#include "encrypt.h"
+#include "misc.h"
+
+#ifdef __STDC__
+#include <stdlib.h>
+#endif
+#ifdef NO_STRING_H
+#include <strings.h>
+#else
+#include <string.h>
+#endif
+
+/*
+ * These functions pointers point to the current routines
+ * for encrypting and decrypting data.
+ */
+void (*encrypt_output) P((unsigned char *, int));
+int (*decrypt_input) P((int));
+
+int encrypt_debug_mode = 0;
+static int decrypt_mode = 0;
+static int encrypt_mode = 0;
+static int encrypt_verbose = 0;
+static int autoencrypt = 0;
+static int autodecrypt = 0;
+static int havesessionkey = 0;
+static int Server = 0;
+static char *Name = "Noname";
+
+#define typemask(x) ((x) > 0 ? 1 << ((x)-1) : 0)
+
+static long i_support_encrypt = typemask(ENCTYPE_DES_CFB64)
+ | typemask(ENCTYPE_DES_OFB64);
+static long i_support_decrypt = typemask(ENCTYPE_DES_CFB64)
+ | typemask(ENCTYPE_DES_OFB64);
+static long i_wont_support_encrypt = 0;
+static long i_wont_support_decrypt = 0;
+#define I_SUPPORT_ENCRYPT (i_support_encrypt & ~i_wont_support_encrypt)
+#define I_SUPPORT_DECRYPT (i_support_decrypt & ~i_wont_support_decrypt)
+
+static long remote_supports_encrypt = 0;
+static long remote_supports_decrypt = 0;
+
+static Encryptions encryptions[] = {
+#if defined(DES_ENCRYPTION)
+ { "DES_CFB64", ENCTYPE_DES_CFB64,
+ cfb64_encrypt,
+ cfb64_decrypt,
+ cfb64_init,
+ cfb64_start,
+ cfb64_is,
+ cfb64_reply,
+ cfb64_session,
+ cfb64_keyid,
+ cfb64_printsub },
+ { "DES_OFB64", ENCTYPE_DES_OFB64,
+ ofb64_encrypt,
+ ofb64_decrypt,
+ ofb64_init,
+ ofb64_start,
+ ofb64_is,
+ ofb64_reply,
+ ofb64_session,
+ ofb64_keyid,
+ ofb64_printsub },
+#endif
+ { 0, },
+};
+
+static unsigned char str_send[64] = { IAC, SB, TELOPT_ENCRYPT,
+ ENCRYPT_SUPPORT };
+static unsigned char str_suplen = 0;
+static unsigned char str_start[72] = { IAC, SB, TELOPT_ENCRYPT };
+static unsigned char str_end[] = { IAC, SB, TELOPT_ENCRYPT, 0, IAC, SE };
+
+ Encryptions *
+findencryption(type)
+ int type;
+{
+ Encryptions *ep = encryptions;
+
+ if (!(I_SUPPORT_ENCRYPT & remote_supports_decrypt & typemask(type)))
+ return(0);
+ while (ep->type && ep->type != type)
+ ++ep;
+ return(ep->type ? ep : 0);
+}
+
+ Encryptions *
+finddecryption(type)
+ int type;
+{
+ Encryptions *ep = encryptions;
+
+ if (!(I_SUPPORT_DECRYPT & remote_supports_encrypt & typemask(type)))
+ return(0);
+ while (ep->type && ep->type != type)
+ ++ep;
+ return(ep->type ? ep : 0);
+}
+
+#define MAXKEYLEN 64
+
+static struct key_info {
+ unsigned char keyid[MAXKEYLEN];
+ int keylen;
+ int dir;
+ int *modep;
+ Encryptions *(*getcrypt)();
+} ki[2] = {
+ { { 0 }, 0, DIR_ENCRYPT, &encrypt_mode, findencryption },
+ { { 0 }, 0, DIR_DECRYPT, &decrypt_mode, finddecryption },
+};
+
+ void
+encrypt_init(name, server)
+ char *name;
+ int server;
+{
+ Encryptions *ep = encryptions;
+
+ Name = name;
+ Server = server;
+ i_support_encrypt = i_support_decrypt = 0;
+ remote_supports_encrypt = remote_supports_decrypt = 0;
+ encrypt_mode = 0;
+ decrypt_mode = 0;
+ encrypt_output = 0;
+ decrypt_input = 0;
+#ifdef notdef
+ encrypt_verbose = !server;
+#endif
+
+ str_suplen = 4;
+
+ while (ep->type) {
+ if (encrypt_debug_mode)
+ printf(">>>%s: I will support %s\r\n",
+ Name, ENCTYPE_NAME(ep->type));
+ i_support_encrypt |= typemask(ep->type);
+ i_support_decrypt |= typemask(ep->type);
+ if ((i_wont_support_decrypt & typemask(ep->type)) == 0)
+ if ((str_send[str_suplen++] = ep->type) == IAC)
+ str_send[str_suplen++] = IAC;
+ if (ep->init)
+ (*ep->init)(Server);
+ ++ep;
+ }
+ str_send[str_suplen++] = IAC;
+ str_send[str_suplen++] = SE;
+}
+
+ void
+encrypt_list_types()
+{
+ Encryptions *ep = encryptions;
+
+ printf("Valid encryption types:\n");
+ while (ep->type) {
+ printf("\t%s (%d)\r\n", ENCTYPE_NAME(ep->type), ep->type);
+ ++ep;
+ }
+}
+
+ int
+EncryptEnable(type, mode)
+ char *type, *mode;
+{
+ if (isprefix(type, "help") || isprefix(type, "?")) {
+ printf("Usage: encrypt enable <type> [input|output]\n");
+ encrypt_list_types();
+ return(0);
+ }
+ if (EncryptType(type, mode))
+ return(EncryptStart(mode));
+ return(0);
+}
+
+ int
+EncryptDisable(type, mode)
+ char *type, *mode;
+{
+ register Encryptions *ep;
+ int ret = 0;
+
+ if (isprefix(type, "help") || isprefix(type, "?")) {
+ printf("Usage: encrypt disable <type> [input|output]\n");
+ encrypt_list_types();
+ } else if ((ep = (Encryptions *)genget(type, encryptions,
+ sizeof(Encryptions))) == 0) {
+ printf("%s: invalid encryption type\n", type);
+ } else if (Ambiguous(ep)) {
+ printf("Ambiguous type '%s'\n", type);
+ } else {
+ if ((mode == 0) || (isprefix(mode, "input") ? 1 : 0)) {
+ if (decrypt_mode == ep->type)
+ EncryptStopInput();
+ i_wont_support_decrypt |= typemask(ep->type);
+ ret = 1;
+ }
+ if ((mode == 0) || (isprefix(mode, "output"))) {
+ if (encrypt_mode == ep->type)
+ EncryptStopOutput();
+ i_wont_support_encrypt |= typemask(ep->type);
+ ret = 1;
+ }
+ if (ret == 0)
+ printf("%s: invalid encryption mode\n", mode);
+ }
+ return(ret);
+}
+
+ int
+EncryptType(type, mode)
+ char *type;
+ char *mode;
+{
+ register Encryptions *ep;
+ int ret = 0;
+
+ if (isprefix(type, "help") || isprefix(type, "?")) {
+ printf("Usage: encrypt type <type> [input|output]\n");
+ encrypt_list_types();
+ } else if ((ep = (Encryptions *)genget(type, encryptions,
+ sizeof(Encryptions))) == 0) {
+ printf("%s: invalid encryption type\n", type);
+ } else if (Ambiguous(ep)) {
+ printf("Ambiguous type '%s'\n", type);
+ } else {
+ if ((mode == 0) || isprefix(mode, "input")) {
+ decrypt_mode = ep->type;
+ i_wont_support_decrypt &= ~typemask(ep->type);
+ ret = 1;
+ }
+ if ((mode == 0) || isprefix(mode, "output")) {
+ encrypt_mode = ep->type;
+ i_wont_support_encrypt &= ~typemask(ep->type);
+ ret = 1;
+ }
+ if (ret == 0)
+ printf("%s: invalid encryption mode\n", mode);
+ }
+ return(ret);
+}
+
+ int
+EncryptStart(mode)
+ char *mode;
+{
+ register int ret = 0;
+ if (mode) {
+ if (isprefix(mode, "input"))
+ return(EncryptStartInput());
+ if (isprefix(mode, "output"))
+ return(EncryptStartOutput());
+ if (isprefix(mode, "help") || isprefix(mode, "?")) {
+ printf("Usage: encrypt start [input|output]\n");
+ return(0);
+ }
+ printf("%s: invalid encryption mode 'encrypt start ?' for help\n", mode);
+ return(0);
+ }
+ ret += EncryptStartInput();
+ ret += EncryptStartOutput();
+ return(ret);
+}
+
+ int
+EncryptStartInput()
+{
+ if (decrypt_mode) {
+ encrypt_send_request_start();
+ return(1);
+ }
+ printf("No previous decryption mode, decryption not enabled\r\n");
+ return(0);
+}
+
+ int
+EncryptStartOutput()
+{
+ if (encrypt_mode) {
+ encrypt_start_output(encrypt_mode);
+ return(1);
+ }
+ printf("No previous encryption mode, encryption not enabled\r\n");
+ return(0);
+}
+
+ int
+EncryptStop(mode)
+ char *mode;
+{
+ int ret = 0;
+ if (mode) {
+ if (isprefix(mode, "input"))
+ return(EncryptStopInput());
+ if (isprefix(mode, "output"))
+ return(EncryptStopOutput());
+ if (isprefix(mode, "help") || isprefix(mode, "?")) {
+ printf("Usage: encrypt stop [input|output]\n");
+ return(0);
+ }
+ printf("%s: invalid encryption mode 'encrypt stop ?' for help\n", mode);
+ return(0);
+ }
+ ret += EncryptStopInput();
+ ret += EncryptStopOutput();
+ return(ret);
+}
+
+ int
+EncryptStopInput()
+{
+ encrypt_send_request_end();
+ return(1);
+}
+
+ int
+EncryptStopOutput()
+{
+ encrypt_send_end();
+ return(1);
+}
+
+ void
+encrypt_display()
+{
+ if (encrypt_output)
+ printf("Currently encrypting output with %s\r\n",
+ ENCTYPE_NAME(encrypt_mode));
+ if (decrypt_input)
+ printf("Currently decrypting input with %s\r\n",
+ ENCTYPE_NAME(decrypt_mode));
+}
+
+ int
+EncryptStatus()
+{
+ if (encrypt_output)
+ printf("Currently encrypting output with %s\r\n",
+ ENCTYPE_NAME(encrypt_mode));
+ else if (encrypt_mode) {
+ printf("Currently output is clear text.\r\n");
+ printf("Last encryption mode was %s\r\n",
+ ENCTYPE_NAME(encrypt_mode));
+ }
+ if (decrypt_input) {
+ printf("Currently decrypting input with %s\r\n",
+ ENCTYPE_NAME(decrypt_mode));
+ } else if (decrypt_mode) {
+ printf("Currently input is clear text.\r\n");
+ printf("Last decryption mode was %s\r\n",
+ ENCTYPE_NAME(decrypt_mode));
+ }
+ return 1;
+}
+
+ void
+encrypt_send_support()
+{
+ if (str_suplen) {
+ /*
+ * If the user has requested that decryption start
+ * immediatly, then send a "REQUEST START" before
+ * we negotiate the type.
+ */
+ if (!Server && autodecrypt)
+ encrypt_send_request_start();
+ net_write(str_send, str_suplen);
+ printsub('>', &str_send[2], str_suplen - 2);
+ str_suplen = 0;
+ }
+}
+
+ int
+EncryptDebug(on)
+ int on;
+{
+ if (on < 0)
+ encrypt_debug_mode ^= 1;
+ else
+ encrypt_debug_mode = on;
+ printf("Encryption debugging %s\r\n",
+ encrypt_debug_mode ? "enabled" : "disabled");
+ return(1);
+}
+
+ int
+EncryptVerbose(on)
+ int on;
+{
+ if (on < 0)
+ encrypt_verbose ^= 1;
+ else
+ encrypt_verbose = on;
+ printf("Encryption %s verbose\r\n",
+ encrypt_verbose ? "is" : "is not");
+ return(1);
+}
+
+ int
+EncryptAutoEnc(on)
+ int on;
+{
+ encrypt_auto(on);
+ printf("Automatic encryption of output is %s\r\n",
+ autoencrypt ? "enabled" : "disabled");
+ return(1);
+}
+
+ int
+EncryptAutoDec(on)
+ int on;
+{
+ decrypt_auto(on);
+ printf("Automatic decryption of input is %s\r\n",
+ autodecrypt ? "enabled" : "disabled");
+ return(1);
+}
+
+/*
+ * Called when ENCRYPT SUPPORT is received.
+ */
+ void
+encrypt_support(typelist, cnt)
+ unsigned char *typelist;
+ int cnt;
+{
+ register int type, use_type = 0;
+ Encryptions *ep;
+
+ /*
+ * Forget anything the other side has previously told us.
+ */
+ remote_supports_decrypt = 0;
+
+ while (cnt-- > 0) {
+ type = *typelist++;
+ if (encrypt_debug_mode)
+ printf(">>>%s: He is supporting %s (%d)\r\n",
+ Name,
+ ENCTYPE_NAME(type), type);
+ if ((type < ENCTYPE_CNT) &&
+ (I_SUPPORT_ENCRYPT & typemask(type))) {
+ remote_supports_decrypt |= typemask(type);
+ if (use_type == 0)
+ use_type = type;
+ }
+ }
+ if (use_type) {
+ ep = findencryption(use_type);
+ if (!ep)
+ return;
+ type = ep->start ? (*ep->start)(DIR_ENCRYPT, Server) : 0;
+ if (encrypt_debug_mode)
+ printf(">>>%s: (*ep->start)() returned %d\r\n",
+ Name, type);
+ if (type < 0)
+ return;
+ encrypt_mode = use_type;
+ if (type == 0)
+ encrypt_start_output(use_type);
+ }
+}
+
+ void
+encrypt_is(data, cnt)
+ unsigned char *data;
+ int cnt;
+{
+ Encryptions *ep;
+ register int type, ret;
+
+ if (--cnt < 0)
+ return;
+ type = *data++;
+ if (type < ENCTYPE_CNT)
+ remote_supports_encrypt |= typemask(type);
+ if (!(ep = finddecryption(type))) {
+ if (encrypt_debug_mode)
+ printf(">>>%s: Can't find type %s (%d) for initial negotiation\r\n",
+ Name,
+ ENCTYPE_NAME_OK(type)
+ ? ENCTYPE_NAME(type) : "(unknown)",
+ type);
+ return;
+ }
+ if (!ep->is) {
+ if (encrypt_debug_mode)
+ printf(">>>%s: No initial negotiation needed for type %s (%d)\r\n",
+ Name,
+ ENCTYPE_NAME_OK(type)
+ ? ENCTYPE_NAME(type) : "(unknown)",
+ type);
+ ret = 0;
+ } else {
+ ret = (*ep->is)(data, cnt);
+ if (encrypt_debug_mode)
+ printf("(*ep->is)(%x, %d) returned %s(%d)\n", data, cnt,
+ (ret < 0) ? "FAIL " :
+ (ret == 0) ? "SUCCESS " : "MORE_TO_DO ", ret);
+ }
+ if (ret < 0) {
+ autodecrypt = 0;
+ } else {
+ decrypt_mode = type;
+ if (ret == 0 && autodecrypt)
+ encrypt_send_request_start();
+ }
+}
+
+ void
+encrypt_reply(data, cnt)
+ unsigned char *data;
+ int cnt;
+{
+ Encryptions *ep;
+ register int ret, type;
+
+ if (--cnt < 0)
+ return;
+ type = *data++;
+ if (!(ep = findencryption(type))) {
+ if (encrypt_debug_mode)
+ printf(">>>%s: Can't find type %s (%d) for initial negotiation\r\n",
+ Name,
+ ENCTYPE_NAME_OK(type)
+ ? ENCTYPE_NAME(type) : "(unknown)",
+ type);
+ return;
+ }
+ if (!ep->reply) {
+ if (encrypt_debug_mode)
+ printf(">>>%s: No initial negotiation needed for type %s (%d)\r\n",
+ Name,
+ ENCTYPE_NAME_OK(type)
+ ? ENCTYPE_NAME(type) : "(unknown)",
+ type);
+ ret = 0;
+ } else {
+ ret = (*ep->reply)(data, cnt);
+ if (encrypt_debug_mode)
+ printf("(*ep->reply)(%x, %d) returned %s(%d)\n",
+ data, cnt,
+ (ret < 0) ? "FAIL " :
+ (ret == 0) ? "SUCCESS " : "MORE_TO_DO ", ret);
+ }
+ if (encrypt_debug_mode)
+ printf(">>>%s: encrypt_reply returned %d\n", Name, ret);
+ if (ret < 0) {
+ autoencrypt = 0;
+ } else {
+ encrypt_mode = type;
+ if (ret == 0 && autoencrypt)
+ encrypt_start_output(type);
+ }
+}
+
+/*
+ * Called when a ENCRYPT START command is received.
+ */
+ void
+encrypt_start(data, cnt)
+ unsigned char *data;
+ int cnt;
+{
+ Encryptions *ep;
+
+ if (!decrypt_mode) {
+ /*
+ * Something is wrong. We should not get a START
+ * command without having already picked our
+ * decryption scheme. Send a REQUEST-END to
+ * attempt to clear the channel...
+ */
+ printf("%s: Warning, Cannot decrypt input stream!!!\r\n", Name);
+ encrypt_send_request_end();
+ return;
+ }
+
+ if (ep = finddecryption(decrypt_mode)) {
+ decrypt_input = ep->input;
+ if (encrypt_verbose)
+ printf("[ Input is now decrypted with type %s ]\r\n",
+ ENCTYPE_NAME(decrypt_mode));
+ if (encrypt_debug_mode)
+ printf(">>>%s: Start to decrypt input with type %s\r\n",
+ Name, ENCTYPE_NAME(decrypt_mode));
+ } else {
+ printf("%s: Warning, Cannot decrypt type %s (%d)!!!\r\n",
+ Name,
+ ENCTYPE_NAME_OK(decrypt_mode)
+ ? ENCTYPE_NAME(decrypt_mode)
+ : "(unknown)",
+ decrypt_mode);
+ encrypt_send_request_end();
+ }
+}
+
+ void
+encrypt_session_key(key, server)
+ Session_Key *key;
+ int server;
+{
+ Encryptions *ep = encryptions;
+
+ havesessionkey = 1;
+
+ while (ep->type) {
+ if (ep->session)
+ (*ep->session)(key, server);
+#ifdef notdef
+ if (!encrypt_output && autoencrypt && !server)
+ encrypt_start_output(ep->type);
+ if (!decrypt_input && autodecrypt && !server)
+ encrypt_send_request_start();
+#endif
+ ++ep;
+ }
+}
+
+/*
+ * Called when ENCRYPT END is received.
+ */
+ void
+encrypt_end()
+{
+ decrypt_input = 0;
+ if (encrypt_debug_mode)
+ printf(">>>%s: Input is back to clear text\r\n", Name);
+ if (encrypt_verbose)
+ printf("[ Input is now clear text ]\r\n");
+}
+
+/*
+ * Called when ENCRYPT REQUEST-END is received.
+ */
+ void
+encrypt_request_end()
+{
+ encrypt_send_end();
+}
+
+/*
+ * Called when ENCRYPT REQUEST-START is received. If we receive
+ * this before a type is picked, then that indicates that the
+ * other side wants us to start encrypting data as soon as we
+ * can.
+ */
+ void
+encrypt_request_start(data, cnt)
+ unsigned char *data;
+ int cnt;
+{
+ if (encrypt_mode == 0) {
+ if (Server)
+ autoencrypt = 1;
+ return;
+ }
+ encrypt_start_output(encrypt_mode);
+}
+
+static unsigned char str_keyid[(MAXKEYLEN*2)+5] = { IAC, SB, TELOPT_ENCRYPT };
+
+encrypt_enc_keyid(keyid, len)
+ unsigned char *keyid;
+ int len;
+{
+ encrypt_keyid(&ki[1], keyid, len);
+}
+
+encrypt_dec_keyid(keyid, len)
+ unsigned char *keyid;
+ int len;
+{
+ encrypt_keyid(&ki[0], keyid, len);
+}
+
+encrypt_keyid(kp, keyid, len)
+ struct key_info *kp;
+ unsigned char *keyid;
+ int len;
+{
+ Encryptions *ep;
+ unsigned char *strp, *cp;
+ int dir = kp->dir;
+ register int ret = 0;
+
+ if (!(ep = (*kp->getcrypt)(*kp->modep))) {
+ if (len == 0)
+ return;
+ kp->keylen = 0;
+ } else if (len == 0) {
+ /*
+ * Empty option, indicates a failure.
+ */
+ if (kp->keylen == 0)
+ return;
+ kp->keylen = 0;
+ if (ep->keyid)
+ (void)(*ep->keyid)(dir, kp->keyid, &kp->keylen);
+
+ } else if ((len != kp->keylen) || (bcmp(keyid, kp->keyid, len) != 0)) {
+ /*
+ * Length or contents are different
+ */
+ kp->keylen = len;
+ bcopy(keyid, kp->keyid, len);
+ if (ep->keyid)
+ (void)(*ep->keyid)(dir, kp->keyid, &kp->keylen);
+ } else {
+ if (ep->keyid)
+ ret = (*ep->keyid)(dir, kp->keyid, &kp->keylen);
+ if ((ret == 0) && (dir == DIR_ENCRYPT) && autoencrypt)
+ encrypt_start_output(*kp->modep);
+ return;
+ }
+
+ encrypt_send_keyid(dir, kp->keyid, kp->keylen, 0);
+}
+
+ void
+encrypt_send_keyid(dir, keyid, keylen, saveit)
+ int dir;
+ unsigned char *keyid;
+ int keylen;
+ int saveit;
+{
+ unsigned char *strp;
+
+ str_keyid[3] = (dir == DIR_ENCRYPT)
+ ? ENCRYPT_ENC_KEYID : ENCRYPT_DEC_KEYID;
+ if (saveit) {
+ struct key_info *kp = &ki[(dir == DIR_ENCRYPT) ? 0 : 1];
+ bcopy(keyid, kp->keyid, keylen);
+ kp->keylen = keylen;
+ }
+
+ for (strp = &str_keyid[4]; keylen > 0; --keylen) {
+ if ((*strp++ = *keyid++) == IAC)
+ *strp++ = IAC;
+ }
+ *strp++ = IAC;
+ *strp++ = SE;
+ net_write(str_keyid, strp - str_keyid);
+ printsub('>', &str_keyid[2], strp - str_keyid - 2);
+}
+
+ void
+encrypt_auto(on)
+ int on;
+{
+ if (on < 0)
+ autoencrypt ^= 1;
+ else
+ autoencrypt = on ? 1 : 0;
+}
+
+ void
+decrypt_auto(on)
+ int on;
+{
+ if (on < 0)
+ autodecrypt ^= 1;
+ else
+ autodecrypt = on ? 1 : 0;
+}
+
+ void
+encrypt_start_output(type)
+ int type;
+{
+ Encryptions *ep;
+ register unsigned char *p;
+ register int i;
+
+ if (!(ep = findencryption(type))) {
+ if (encrypt_debug_mode) {
+ printf(">>>%s: Can't encrypt with type %s (%d)\r\n",
+ Name,
+ ENCTYPE_NAME_OK(type)
+ ? ENCTYPE_NAME(type) : "(unknown)",
+ type);
+ }
+ return;
+ }
+ if (ep->start) {
+ i = (*ep->start)(DIR_ENCRYPT, Server);
+ if (encrypt_debug_mode) {
+ printf(">>>%s: Encrypt start: %s (%d) %s\r\n",
+ Name,
+ (i < 0) ? "failed" :
+ "initial negotiation in progress",
+ i, ENCTYPE_NAME(type));
+ }
+ if (i)
+ return;
+ }
+ p = str_start + 3;
+ *p++ = ENCRYPT_START;
+ for (i = 0; i < ki[0].keylen; ++i) {
+ if ((*p++ = ki[0].keyid[i]) == IAC)
+ *p++ = IAC;
+ }
+ *p++ = IAC;
+ *p++ = SE;
+ net_write(str_start, p - str_start);
+ net_encrypt();
+ printsub('>', &str_start[2], p - &str_start[2]);
+ /*
+ * If we are already encrypting in some mode, then
+ * encrypt the ring (which includes our request) in
+ * the old mode, mark it all as "clear text" and then
+ * switch to the new mode.
+ */
+ encrypt_output = ep->output;
+ encrypt_mode = type;
+ if (encrypt_debug_mode)
+ printf(">>>%s: Started to encrypt output with type %s\r\n",
+ Name, ENCTYPE_NAME(type));
+ if (encrypt_verbose)
+ printf("[ Output is now encrypted with type %s ]\r\n",
+ ENCTYPE_NAME(type));
+}
+
+ void
+encrypt_send_end()
+{
+ if (!encrypt_output)
+ return;
+
+ str_end[3] = ENCRYPT_END;
+ net_write(str_end, sizeof(str_end));
+ net_encrypt();
+ printsub('>', &str_end[2], sizeof(str_end) - 2);
+ /*
+ * Encrypt the output buffer now because it will not be done by
+ * netflush...
+ */
+ encrypt_output = 0;
+ if (encrypt_debug_mode)
+ printf(">>>%s: Output is back to clear text\r\n", Name);
+ if (encrypt_verbose)
+ printf("[ Output is now clear text ]\r\n");
+}
+
+ void
+encrypt_send_request_start()
+{
+ register unsigned char *p;
+ register int i;
+
+ p = &str_start[3];
+ *p++ = ENCRYPT_REQSTART;
+ for (i = 0; i < ki[1].keylen; ++i) {
+ if ((*p++ = ki[1].keyid[i]) == IAC)
+ *p++ = IAC;
+ }
+ *p++ = IAC;
+ *p++ = SE;
+ net_write(str_start, p - str_start);
+ printsub('>', &str_start[2], p - &str_start[2]);
+ if (encrypt_debug_mode)
+ printf(">>>%s: Request input to be encrypted\r\n", Name);
+}
+
+ void
+encrypt_send_request_end()
+{
+ str_end[3] = ENCRYPT_REQEND;
+ net_write(str_end, sizeof(str_end));
+ printsub('>', &str_end[2], sizeof(str_end) - 2);
+
+ if (encrypt_debug_mode)
+ printf(">>>%s: Request input to be clear text\r\n", Name);
+}
+
+ void
+encrypt_wait()
+{
+ register int encrypt, decrypt;
+ if (encrypt_debug_mode)
+ printf(">>>%s: in encrypt_wait\r\n", Name);
+ if (!havesessionkey || !(I_SUPPORT_ENCRYPT & remote_supports_decrypt))
+ return;
+ while (autoencrypt && !encrypt_output)
+ if (telnet_spin())
+ return;
+}
+
+ void
+encrypt_debug(mode)
+ int mode;
+{
+ encrypt_debug_mode = mode;
+}
+
+ void
+encrypt_gen_printsub(data, cnt, buf, buflen)
+ unsigned char *data, *buf;
+ int cnt, buflen;
+{
+ char tbuf[16], *cp;
+
+ cnt -= 2;
+ data += 2;
+ buf[buflen-1] = '\0';
+ buf[buflen-2] = '*';
+ buflen -= 2;;
+ for (; cnt > 0; cnt--, data++) {
+ sprintf(tbuf, " %d", *data);
+ for (cp = tbuf; *cp && buflen > 0; --buflen)
+ *buf++ = *cp++;
+ if (buflen <= 0)
+ return;
+ }
+ *buf = '\0';
+}
+
+ void
+encrypt_printsub(data, cnt, buf, buflen)
+ unsigned char *data, *buf;
+ int cnt, buflen;
+{
+ Encryptions *ep;
+ register int type = data[1];
+
+ for (ep = encryptions; ep->type && ep->type != type; ep++)
+ ;
+
+ if (ep->printsub)
+ (*ep->printsub)(data, cnt, buf, buflen);
+ else
+ encrypt_gen_printsub(data, cnt, buf, buflen);
+}
+#endif
--- /dev/null
+/*-
+ * Copyright (c) 1991 The Regents of the University of California.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * @(#)encrypt.h 5.3 (Berkeley) 12/18/92
+ */
+
+/*
+ * Copyright (C) 1990 by the Massachusetts Institute of Technology
+ *
+ * Export of this software from the United States of America is assumed
+ * to require a specific license from the United States Government.
+ * It is the responsibility of any person or organization contemplating
+ * export to obtain such a license before exporting.
+ *
+ * WITHIN THAT CONSTRAINT, permission to use, copy, modify, and
+ * distribute this software and its documentation for any purpose and
+ * without fee is hereby granted, provided that the above copyright
+ * notice appear in all copies and that both that copyright notice and
+ * this permission notice appear in supporting documentation, and that
+ * the name of M.I.T. not be used in advertising or publicity pertaining
+ * to distribution of the software without specific, written prior
+ * permission. M.I.T. makes no representations about the suitability of
+ * this software for any purpose. It is provided "as is" without express
+ * or implied warranty.
+ */
+
+#ifndef __ENCRYPTION__
+#define __ENCRYPTION__
+
+#define DIR_DECRYPT 1
+#define DIR_ENCRYPT 2
+
+typedef unsigned char Block[8];
+typedef unsigned char *BlockT;
+typedef struct { Block _; } Schedule[16];
+
+#define VALIDKEY(key) ( key[0] | key[1] | key[2] | key[3] | \
+ key[4] | key[5] | key[6] | key[7])
+
+#define SAMEKEY(k1, k2) (!bcmp((void *)k1, (void *)k2, sizeof(Block)))
+
+typedef struct {
+ short type;
+ int length;
+ unsigned char *data;
+} Session_Key;
+
+#if !defined(P)
+#ifdef __STDC__
+#define P(x) x
+#else
+#define P(x) ()
+#endif
+#endif
+
+typedef struct {
+ char *name;
+ int type;
+ void (*output) P((unsigned char *, int));
+ int (*input) P((int));
+ void (*init) P((int));
+ int (*start) P((int, int));
+ int (*is) P((unsigned char *, int));
+ int (*reply) P((unsigned char *, int));
+ void (*session) P((Session_Key *, int));
+ int (*keyid) P((int, unsigned char *, int *));
+ void (*printsub) P((unsigned char *, int, unsigned char *, int));
+} Encryptions;
+
+#define SK_DES 1 /* Matched Kerberos v5 KEYTYPE_DES */
+
+#include "enc-proto.h"
+
+extern int encrypt_debug_mode;
+extern int (*decrypt_input) P((int));
+extern void (*encrypt_output) P((unsigned char *, int));
+#endif
--- /dev/null
+/*
+ * $Source$
+ * $Id$
+ */
+
+#ifndef lint
+static char *rcsid_forward_c =
+ "$Id$";
+#endif /* lint */
+#define LIBC_SCCS
+
+/*
+ * Copyright (c) 1983 Regents of the University of California.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms are permitted
+ * provided that the above copyright notice and this paragraph are
+ * duplicated in all such forms and that any documentation,
+ * advertising materials, and other materials related to such
+ * distribution and use acknowledge that the software was developed
+ * by the University of California, Berkeley. The name of the
+ * University may not be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
+ * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+ */
+
+
+/* General-purpose forwarding routines. These routines may be put into */
+/* libkrb5.a to allow widespread use */
+
+#ifdef KRB5
+#include <stdio.h>
+#include <pwd.h>
+#include <netdb.h>
+
+#include <krb5/krb5.h>
+#include <krb5/asn1.h>
+#include <krb5/crc-32.h>
+#include <krb5/los-proto.h>
+#include <krb5/ext-proto.h>
+
+#define TGTNAME "krbtgt" /* Else #include <krb5/kdb.h> */
+#define KRB5_DEFAULT_LIFE 60*60*8 /* 8 hours */
+/* helper function: convert flags to necessary KDC options */
+#define flags2options(flags) (flags & KDC_TKT_COMMON_MASK)
+
+
+
+/* Get a TGT for use at the remote host */
+krb5_error_code
+get_for_creds(etype, sumtype, rhost, client, enc_key, forwardable, outbuf)
+ const krb5_enctype etype;
+ const krb5_cksumtype sumtype;
+ char *rhost;
+ krb5_principal client;
+ krb5_keyblock *enc_key;
+ int forwardable; /* Should forwarded TGT also be forwardable? */
+ krb5_data *outbuf;
+{
+ struct hostent *hp;
+ krb5_address **addrs;
+ krb5_error_code retval;
+ krb5_data *scratch;
+ krb5_kdc_rep *dec_rep;
+ krb5_error *err_reply;
+ krb5_response tgsrep;
+ krb5_creds creds, tgt;
+ krb5_ccache cc;
+ krb5_flags kdcoptions;
+ krb5_timestamp now;
+ char *remote_host;
+ char **hrealms;
+ int i;
+
+ if (!rhost || !(hp = gethostbyname(rhost)))
+ return KRB5_ERR_BAD_HOSTNAME;
+
+ remote_host = strdup(hp->h_name);
+
+ if (retval = krb5_get_host_realm(remote_host, &hrealms)) {
+ free(remote_host);
+ return retval;
+ }
+ if (!hrealms[0]) {
+ free(remote_host);
+ xfree(hrealms);
+ return KRB5_ERR_HOST_REALM_UNKNOWN;
+ }
+
+ /* Count elements */
+ for(i=0; hp->h_addr_list[i]; i++);
+
+ addrs = (krb5_address **) malloc ((i+1)*sizeof(*addrs));
+ if (!addrs)
+ return ENOMEM;
+
+ for(i=0; hp->h_addr_list[i]; i++) {
+ addrs[i] = (krb5_address *) malloc(sizeof(krb5_address));
+ if (addrs[i]) {
+ addrs[i]->addrtype = hp->h_addrtype;
+ addrs[i]->length = hp->h_length;
+ addrs[i]->contents = (unsigned char *)malloc(addrs[i]->length);
+ if (!addrs[i]->contents) {
+ krb5_free_addresses(addrs);
+ return ENOMEM;
+ }
+ else
+ memcpy ((char *)addrs[i]->contents, hp->h_addr_list[i],
+ addrs[i]->length);
+ }
+ else {
+ return ENOMEM;
+ }
+ }
+ addrs[i] = 0;
+
+ memset((char *)&creds, 0, sizeof(creds));
+ if (retval = krb5_copy_principal(client, &creds.client))
+ return retval;
+
+ if (retval = krb5_build_principal_ext(&creds.server,
+ strlen(hrealms[0]),
+ hrealms[0],
+ sizeof(TGTNAME) - 1,
+ TGTNAME,
+ client->realm.length,
+ client->realm.data,
+ 0))
+ return retval;
+
+ creds.times.starttime = 0;
+ if (retval = krb5_timeofday(&now)) {
+ return retval;
+ }
+ creds.times.endtime = now + KRB5_DEFAULT_LIFE;
+ creds.times.renew_till = 0;
+
+ if (retval = krb5_cc_default(&cc)) {
+ return retval;
+ }
+
+ /* fetch tgt directly from cache */
+ if (retval = krb5_cc_retrieve_cred (cc,
+ KRB5_TC_MATCH_SRV_NAMEONLY,
+ &creds,
+ &tgt)) {
+ return retval;
+ }
+
+ /* tgt->client must be equal to creds.client */
+ if (!krb5_principal_compare(tgt.client, creds.client))
+ return KRB5_PRINC_NOMATCH;
+
+ if (!tgt.ticket.length)
+ return(KRB5_NO_TKT_SUPPLIED);
+
+ kdcoptions = flags2options(tgt.ticket_flags)|KDC_OPT_FORWARDED;
+
+ if (!forwardable) /* Reset KDC_OPT_FORWARDABLE */
+ kdcoptions &= ~(KDC_OPT_FORWARDABLE);
+
+ if (retval = krb5_send_tgs(kdcoptions, &creds.times, etype, sumtype,
+ creds.server,
+ addrs,
+ creds.authdata,
+ 0, /* no padata */
+ 0, /* no second ticket */
+ &tgt, &tgsrep))
+ return retval;
+
+#undef cleanup
+#define cleanup() free(tgsrep.response.data)
+
+ switch (tgsrep.message_type) {
+ case KRB5_TGS_REP:
+ break;
+ case KRB5_ERROR:
+ default:
+ if (!krb5_is_krb_error(&tgsrep.response)) {
+ retval = KRB5KRB_AP_ERR_MSG_TYPE;
+ } else
+ retval = decode_krb5_error(&tgsrep.response, &err_reply);
+ if (retval) {
+ cleanup();
+ return retval; /* neither proper reply nor error! */
+ }
+
+ retval = err_reply->error + ERROR_TABLE_BASE_krb5;
+
+ krb5_free_error(err_reply);
+ cleanup();
+ return retval;
+ }
+ retval = krb5_decode_kdc_rep(&tgsrep.response,
+ &tgt.keyblock,
+ etype, /* enctype */
+ &dec_rep);
+
+ cleanup();
+ if (retval)
+ return retval;
+#undef cleanup
+#define cleanup() {\
+ memset((char *)dec_rep->enc_part2->session->contents, 0,\
+ dec_rep->enc_part2->session->length);\
+ krb5_free_kdc_rep(dec_rep); }
+
+ if (dec_rep->msg_type != KRB5_TGS_REP) {
+ retval = KRB5KRB_AP_ERR_MSG_TYPE;
+ cleanup();
+ return retval;
+ }
+
+ /* now it's decrypted and ready for prime time */
+
+ if (!krb5_principal_compare(dec_rep->client, tgt.client)) {
+ cleanup();
+ return KRB5_KDCREP_MODIFIED;
+ }
+
+ if (retval = mk_cred(dec_rep,
+ etype,
+ enc_key,
+ 0,
+ 0,
+ outbuf))
+ return retval;
+
+ krb5_free_kdc_rep(dec_rep);
+
+ return retval;
+#undef cleanup
+}
+
+
+
+/* Create asn.1 encoded KRB-CRED message from the kdc reply. */
+krb5_error_code
+mk_cred(dec_rep, etype, key, sender_addr, recv_addr, outbuf)
+krb5_kdc_rep *dec_rep;
+krb5_enctype etype;
+krb5_keyblock *key;
+krb5_address *sender_addr;
+krb5_address *recv_addr;
+krb5_data *outbuf;
+{
+ krb5_error_code retval;
+ krb5_encrypt_block eblock;
+ krb5_cred ret_cred;
+ krb5_cred_enc_part cred_enc_part;
+ krb5_data *scratch;
+
+ if (!valid_etype(etype))
+ return KRB5_PROG_ETYPE_NOSUPP;
+
+ ret_cred.tickets = (krb5_ticket **) calloc(2, sizeof(*ret_cred.tickets));
+ if (!ret_cred.tickets)
+ return ENOMEM;
+ ret_cred.tickets[0] = dec_rep->ticket;
+ ret_cred.tickets[1] = 0;
+
+ ret_cred.enc_part.etype = etype;
+ ret_cred.enc_part.kvno = 0;
+
+ cred_enc_part.creds = (krb5_cred_enc_struct **)
+ calloc(2, sizeof(*cred_enc_part.creds));
+ if (!cred_enc_part.creds) {
+ krb5_free_tickets(ret_cred.tickets);
+ return ENOMEM;
+ }
+ cred_enc_part.creds[0] = (krb5_cred_enc_struct *)
+ malloc(sizeof(*cred_enc_part.creds[0]));
+ if (!cred_enc_part.creds[0]) {
+ krb5_free_tickets(ret_cred.tickets);
+ krb5_free_cred_enc_part(cred_enc_part);
+ return ENOMEM;
+ }
+ cred_enc_part.creds[0]->session = dec_rep->enc_part2->session;
+ cred_enc_part.creds[0]->nonce = 0;
+
+ if (retval = krb5_us_timeofday(&cred_enc_part.creds[0]->timestamp,
+ &cred_enc_part.creds[0]->usec))
+ return retval;
+
+ cred_enc_part.creds[0]->s_address = (krb5_address *)sender_addr;
+ cred_enc_part.creds[0]->r_address = (krb5_address *)recv_addr;
+ cred_enc_part.creds[0]->client = dec_rep->client;
+ cred_enc_part.creds[0]->server = dec_rep->enc_part2->server;
+ cred_enc_part.creds[0]->flags = dec_rep->enc_part2->flags;
+ cred_enc_part.creds[0]->times = dec_rep->enc_part2->times;
+ cred_enc_part.creds[0]->caddrs = dec_rep->enc_part2->caddrs;
+
+ cred_enc_part.creds[1] = 0;
+
+ /* start by encoding to-be-encrypted part of the message */
+
+ if (retval = encode_krb5_enc_cred_part(&cred_enc_part, &scratch))
+ return retval;
+
+#define cleanup_scratch() { (void) memset(scratch->data, 0, scratch->length); krb5_free_data(scratch); }
+
+ /* put together an eblock for this encryption */
+
+ krb5_use_cstype(&eblock, etype);
+ ret_cred.enc_part.ciphertext.length = krb5_encrypt_size(scratch->length,
+ eblock.crypto_entry);
+ /* add padding area, and zero it */
+ if (!(scratch->data = realloc(scratch->data,
+ ret_cred.enc_part.ciphertext.length))) {
+ /* may destroy scratch->data */
+ xfree(scratch);
+ return ENOMEM;
+ }
+ memset(scratch->data + scratch->length, 0,
+ ret_cred.enc_part.ciphertext.length - scratch->length);
+ if (!(ret_cred.enc_part.ciphertext.data =
+ malloc(ret_cred.enc_part.ciphertext.length))) {
+ retval = ENOMEM;
+ goto clean_scratch;
+ }
+
+#define cleanup_encpart() {\
+ (void) memset(ret_cred.enc_part.ciphertext.data, 0, \
+ ret_cred.enc_part.ciphertext.length); \
+ free(ret_cred.enc_part.ciphertext.data); \
+ ret_cred.enc_part.ciphertext.length = 0; \
+ ret_cred.enc_part.ciphertext.data = 0;}
+
+ /* do any necessary key pre-processing */
+ if (retval = krb5_process_key(&eblock, key)) {
+ goto clean_encpart;
+ }
+
+#define cleanup_prockey() {(void) krb5_finish_key(&eblock);}
+
+ /* call the encryption routine */
+ if (retval = krb5_encrypt((krb5_pointer) scratch->data,
+ (krb5_pointer)
+ ret_cred.enc_part.ciphertext.data,
+ scratch->length, &eblock,
+ 0)) {
+ goto clean_prockey;
+ }
+
+ /* private message is now assembled-- do some cleanup */
+ cleanup_scratch();
+
+ if (retval = krb5_finish_key(&eblock)) {
+ cleanup_encpart();
+ return retval;
+ }
+ /* encode private message */
+ if (retval = encode_krb5_cred(&ret_cred, &scratch)) {
+ cleanup_encpart();
+ return retval;
+ }
+
+ cleanup_encpart();
+
+ *outbuf = *scratch;
+ xfree(scratch);
+ return 0;
+
+ clean_prockey:
+ cleanup_prockey();
+ clean_encpart:
+ cleanup_encpart();
+ clean_scratch:
+ cleanup_scratch();
+
+ return retval;
+#undef cleanup_prockey
+#undef cleanup_encpart
+#undef cleanup_scratch
+}
+
+
+
+/* Decode, decrypt and store the forwarded creds in the local ccache. */
+krb5_error_code
+rd_and_store_for_creds(inbuf, ticket, lusername)
+ krb5_data *inbuf;
+ krb5_ticket *ticket;
+ char *lusername;
+{
+ krb5_encrypt_block eblock;
+ krb5_creds creds;
+ krb5_error_code retval;
+ char ccname[35];
+ krb5_ccache ccache = NULL;
+ struct passwd *pwd;
+
+ if (retval = rd_cred(inbuf, ticket->enc_part2->session,
+ &creds, 0, 0)) {
+ return(retval);
+ }
+
+ if (!(pwd = (struct passwd *) getpwnam(lusername))) {
+ return -1;
+ }
+
+ sprintf(ccname, "FILE:/tmp/krb5cc_%d", pwd->pw_uid);
+
+ if (retval = krb5_cc_resolve(ccname, &ccache)) {
+ return(retval);
+ }
+
+ if (retval = krb5_cc_initialize(ccache,
+ ticket->enc_part2->client)) {
+ return(retval);
+ }
+
+ if (retval = krb5_cc_store_cred(ccache, &creds)) {
+ return(retval);
+ }
+
+ if (retval = chown(ccname+5, pwd->pw_uid, -1)) {
+ return(retval);
+ }
+
+ return retval;
+}
+
+
+
+extern krb5_deltat krb5_clockskew;
+#define in_clock_skew(date) (abs((date)-currenttime) < krb5_clockskew)
+
+/* Decode the KRB-CRED message, and return creds */
+krb5_error_code
+rd_cred(inbuf, key, creds, sender_addr, recv_addr)
+const krb5_data *inbuf;
+const krb5_keyblock *key;
+krb5_creds *creds; /* Filled in */
+const krb5_address *sender_addr; /* optional */
+const krb5_address *recv_addr; /* optional */
+{
+ krb5_error_code retval;
+ krb5_encrypt_block eblock;
+ krb5_cred *credmsg;
+ krb5_cred_enc_part *credmsg_enc_part;
+ krb5_data *scratch;
+ krb5_timestamp currenttime;
+
+ if (!krb5_is_krb_cred(inbuf))
+ return KRB5KRB_AP_ERR_MSG_TYPE;
+
+ /* decode private message */
+ if (retval = decode_krb5_cred(inbuf, &credmsg)) {
+ return retval;
+ }
+
+#define cleanup_credmsg() {(void)xfree(credmsg->enc_part.ciphertext.data); (void)xfree(credmsg);}
+
+ if (!(scratch = (krb5_data *) malloc(sizeof(*scratch)))) {
+ cleanup_credmsg();
+ return ENOMEM;
+ }
+
+#define cleanup_scratch() {(void)memset(scratch->data, 0, scratch->length); (void)xfree(scratch->data);}
+
+ if (retval = encode_krb5_ticket(credmsg->tickets[0], &scratch)) {
+ cleanup_credmsg();
+ cleanup_scratch();
+ return(retval);
+ }
+
+ creds->ticket = *scratch;
+ if (!(creds->ticket.data = malloc(scratch->length))) {
+ xfree(creds->ticket.data);
+ return ENOMEM;
+ }
+ memcpy((char *)creds->ticket.data, (char *) scratch->data, scratch->length);
+
+ cleanup_scratch();
+
+ if (!valid_etype(credmsg->enc_part.etype)) {
+ cleanup_credmsg();
+ return KRB5_PROG_ETYPE_NOSUPP;
+ }
+
+ /* put together an eblock for this decryption */
+
+ krb5_use_cstype(&eblock, credmsg->enc_part.etype);
+ scratch->length = credmsg->enc_part.ciphertext.length;
+
+ if (!(scratch->data = malloc(scratch->length))) {
+ cleanup_credmsg();
+ return ENOMEM;
+ }
+
+ /* do any necessary key pre-processing */
+ if (retval = krb5_process_key(&eblock, key)) {
+ cleanup_credmsg();
+ cleanup_scratch();
+ return retval;
+ }
+
+#define cleanup_prockey() {(void) krb5_finish_key(&eblock);}
+
+ /* call the decryption routine */
+ if (retval = krb5_decrypt((krb5_pointer) credmsg->enc_part.ciphertext.data,
+ (krb5_pointer) scratch->data,
+ scratch->length, &eblock,
+ 0)) {
+ cleanup_credmsg();
+ cleanup_scratch();
+ cleanup_prockey();
+ return retval;
+ }
+
+ /* cred message is now decrypted -- do some cleanup */
+
+ cleanup_credmsg();
+
+ if (retval = krb5_finish_key(&eblock)) {
+ cleanup_scratch();
+ return retval;
+ }
+
+ /* now decode the decrypted stuff */
+ if (retval = decode_krb5_enc_cred_part(scratch, &credmsg_enc_part)) {
+ cleanup_scratch();
+ return retval;
+ }
+ cleanup_scratch();
+
+#define cleanup_mesg() {(void)xfree(credmsg_enc_part);}
+
+ if (retval = krb5_timeofday(¤ttime)) {
+ cleanup_mesg();
+ return retval;
+ }
+ if (!in_clock_skew(credmsg_enc_part->creds[0]->timestamp)) {
+ cleanup_mesg();
+ return KRB5KRB_AP_ERR_SKEW;
+ }
+
+ if (sender_addr && credmsg_enc_part->creds[0]->s_address &&
+ !krb5_address_compare(sender_addr,
+ credmsg_enc_part->creds[0]->s_address)) {
+ cleanup_mesg();
+ return KRB5KRB_AP_ERR_BADADDR;
+ }
+ if (recv_addr && credmsg_enc_part->creds[0]->r_address &&
+ !krb5_address_compare(recv_addr,
+ credmsg_enc_part->creds[0]->r_address)) {
+ cleanup_mesg();
+ return KRB5KRB_AP_ERR_BADADDR;
+ }
+
+ if (credmsg_enc_part->creds[0]->r_address) {
+ krb5_address **our_addrs;
+
+ if (retval = krb5_os_localaddr(&our_addrs)) {
+ cleanup_mesg();
+ return retval;
+ }
+ if (!krb5_address_search(credmsg_enc_part->creds[0]->r_address,
+ our_addrs)) {
+ krb5_free_addresses(our_addrs);
+ cleanup_mesg();
+ return KRB5KRB_AP_ERR_BADADDR;
+ }
+ krb5_free_addresses(our_addrs);
+ }
+
+ if (retval = krb5_copy_principal(credmsg_enc_part->creds[0]->client,
+ &creds->client)) {
+ return(retval);
+ }
+
+ if (retval = krb5_copy_principal(credmsg_enc_part->creds[0]->server,
+ &creds->server)) {
+ return(retval);
+ }
+
+ if (retval =
+ krb5_copy_keyblock_contents(credmsg_enc_part->creds[0]->session,
+ &creds->keyblock)) {
+ return(retval);
+ }
+
+#undef clean
+#define clean() {\
+ memset((char *)creds->keyblock.contents, 0, creds->keyblock.length);}
+
+ creds->times = credmsg_enc_part->creds[0]->times;
+ creds->is_skey = FALSE;
+ creds->ticket_flags = credmsg_enc_part->creds[0]->flags;
+
+ if (retval = krb5_copy_addresses(credmsg_enc_part->creds[0]->caddrs,
+ &creds->addresses)) {
+ clean();
+ return(retval);
+ }
+
+ creds->second_ticket.length = 0;
+
+ creds->authdata = 0;
+
+ cleanup_mesg();
+ return 0;
+#undef clean
+#undef cleanup_credmsg
+#undef cleanup_scratch
+#undef cleanup_prockey
+#undef cleanup_mesg
+}
+
+#endif /* KRB5 */
--- /dev/null
+/*-
+ * Copyright (c) 1991 The Regents of the University of California.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef lint
+static char sccsid[] = "@(#)genget.c 5.1 (Berkeley) 2/28/91";
+#endif /* not lint */
+
+
+#include <ctype.h>
+
+#define LOWER(x) (isupper(x) ? tolower(x) : (x))
+/*
+ * The prefix function returns 0 if *s1 is not a prefix
+ * of *s2. If *s1 exactly matches *s2, the negative of
+ * the length is returned. If *s1 is a prefix of *s2,
+ * the length of *s1 is returned.
+ */
+ int
+isprefix(s1, s2)
+ register char *s1, *s2;
+{
+ register int n = 0;
+ char *os1;
+ register char c1, c2;
+
+ if (*s1 == '\0')
+ return(-1);
+ os1 = s1;
+ c1 = *s1;
+ c2 = *s2;
+ while (LOWER(c1) == LOWER(c2)) {
+ if (c1 == '\0')
+ break;
+ c1 = *++s1;
+ c2 = *++s2;
+ }
+ return(*s1 ? 0 : (*s2 ? (s1 - os1) : (os1 - s1)));
+}
+
+static char *ambiguous; /* special return value for command routines */
+
+ char **
+genget(name, table, stlen)
+ char *name; /* name to match */
+ char **table; /* name entry in table */
+ int stlen;
+{
+ register char **c, **found;
+ register int n;
+
+ if (name == 0)
+ return 0;
+
+ found = 0;
+ for (c = table; *c != 0; c = (char **)((char *)c + stlen)) {
+ if ((n = isprefix(name, *c)) == 0)
+ continue;
+ if (n < 0) /* exact match */
+ return(c);
+ if (found)
+ return(&ambiguous);
+ found = c;
+ }
+ return(found);
+}
+
+/*
+ * Function call version of Ambiguous()
+ */
+ int
+Ambiguous(s)
+ char *s;
+{
+ return((char **)s == &ambiguous);
+}
--- /dev/null
+/*-
+ * Copyright (c) 1991 The Regents of the University of California.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef lint
+static char sccsid[] = "@(#)getent.c 5.3 (Berkeley) 1/20/93";
+#endif /* not lint */
+
+/*ARGSUSED*/
+getent(cp, name)
+char *cp, *name;
+{
+ return(0);
+}
+
+#ifndef __svr4__
+/*ARGSUSED*/
+char *
+getstr(cp, cpp)
+char *cp, **cpp;
+{
+ return(0);
+}
+#endif
--- /dev/null
+/*
+ * Copyright (c) 1987 Regents of the University of California.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms are permitted
+ * provided that: (1) source distributions retain this entire copyright
+ * notice and comment, and (2) distributions including binaries display
+ * the following acknowledgement: ``This product includes software
+ * developed by the University of California, Berkeley and its contributors''
+ * in the documentation or other materials provided with the distribution
+ * and in all advertising materials mentioning features or use of this
+ * software. Neither the name of the University nor the names of its
+ * contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)getopt.c 4.12 (Berkeley) 6/1/90";
+#endif /* LIBC_SCCS and not lint */
+
+#include <stdio.h>
+
+/*
+ * get option letter from argument vector
+ */
+int opterr = 1, /* if error message should be printed */
+ optind = 1, /* index into parent argv vector */
+ optopt; /* character checked for validity */
+char *optarg; /* argument associated with option */
+
+#define BADCH (int)'?'
+#define EMSG ""
+
+getopt(nargc, nargv, ostr)
+ int nargc;
+ char **nargv, *ostr;
+{
+ static char *place = EMSG; /* option letter processing */
+ register char *oli; /* option letter list index */
+ char *p, *index(), *rindex();
+
+ if (!*place) { /* update scanning pointer */
+ if (optind >= nargc || *(place = nargv[optind]) != '-') {
+ place = EMSG;
+ return(EOF);
+ }
+ if (place[1] && *++place == '-') { /* found "--" */
+ ++optind;
+ place = EMSG;
+ return(EOF);
+ }
+ } /* option letter okay? */
+ if ((optopt = (int)*place++) == (int)':' ||
+ !(oli = index(ostr, optopt))) {
+ /*
+ * if the user didn't specify '-' as an option,
+ * assume it means EOF.
+ */
+ if (optopt == (int)'-')
+ return(EOF);
+ if (!*place)
+ ++optind;
+ if (opterr) {
+ if (!(p = rindex(*nargv, '/')))
+ p = *nargv;
+ else
+ ++p;
+ (void)fprintf(stderr, "%s: illegal option -- %c\n",
+ p, optopt);
+ }
+ return(BADCH);
+ }
+ if (*++oli != ':') { /* don't need argument */
+ optarg = NULL;
+ if (!*place)
+ ++optind;
+ }
+ else { /* need an argument */
+ if (*place) /* no white space */
+ optarg = place;
+ else if (nargc <= ++optind) { /* no arg */
+ place = EMSG;
+ if (!(p = rindex(*nargv, '/')))
+ p = *nargv;
+ else
+ ++p;
+ if (opterr)
+ (void)fprintf(stderr,
+ "%s: option requires an argument -- %c\n",
+ p, optopt);
+ return(BADCH);
+ }
+ else /* white space */
+ optarg = nargv[optind];
+ place = EMSG;
+ ++optind;
+ }
+ return(optopt); /* dump back option letter */
+}
--- /dev/null
+/*
+ * Copyright (c) 1988, 1990 Regents of the University of California.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms are permitted provided
+ * that: (1) source distributions retain this entire copyright notice and
+ * comment, and (2) distributions including binaries display the following
+ * acknowledgement: ``This product includes software developed by the
+ * University of California, Berkeley and its contributors'' in the
+ * documentation or other materials provided with the distribution and in
+ * all advertising materials mentioning features or use of this software.
+ * Neither the name of the University nor the names of its contributors may
+ * be used to endorse or promote products derived from this software without
+ * specific prior written permission.
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+ */
+
+#include <stdio.h>
+
+char *h_errlist[] = {
+ "Error 0",
+ "Unknown host", /* 1 HOST_NOT_FOUND */
+ "Host name lookup failure", /* 2 TRY_AGAIN */
+ "Unknown server error", /* 3 NO_RECOVERY */
+ "No address associated with name", /* 4 NO_ADDRESS */
+};
+int h_nerr = { sizeof(h_errlist)/sizeof(h_errlist[0]) };
+
+int h_errno; /* In some version of SunOS this is necessary */
+
+/*
+ * herror --
+ * print the error indicated by the h_errno value.
+ */
+herror(s)
+ char *s;
+{
+ if (s && *s) {
+ fprintf(stderr, "%s: ", s);
+ }
+ if ((h_errno < 0) || (h_errno >= h_nerr)) {
+ fprintf(stderr, "Unknown error\n");
+ } else if (h_errno == 0) {
+#if defined(sun)
+ fprintf(stderr, "Host unknown\n");
+#endif /* defined(sun) */
+ } else {
+ fprintf(stderr, "%s\n", h_errlist[h_errno]);
+ }
+}
--- /dev/null
+/*-
+ * Copyright (c) 1991 The Regents of the University of California.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef lint
+static char sccsid[] = "@(#)kerberos.c 5.3 (Berkeley) 12/18/92";
+#endif /* not lint */
+
+/*
+ * Copyright (C) 1990 by the Massachusetts Institute of Technology
+ *
+ * Export of this software from the United States of America is assumed
+ * to require a specific license from the United States Government.
+ * It is the responsibility of any person or organization contemplating
+ * export to obtain such a license before exporting.
+ *
+ * WITHIN THAT CONSTRAINT, permission to use, copy, modify, and
+ * distribute this software and its documentation for any purpose and
+ * without fee is hereby granted, provided that the above copyright
+ * notice appear in all copies and that both that copyright notice and
+ * this permission notice appear in supporting documentation, and that
+ * the name of M.I.T. not be used in advertising or publicity pertaining
+ * to distribution of the software without specific, written prior
+ * permission. M.I.T. makes no representations about the suitability of
+ * this software for any purpose. It is provided "as is" without express
+ * or implied warranty.
+ */
+
+#ifdef KRB4
+#include <sys/types.h>
+#include <arpa/telnet.h>
+#include <stdio.h>
+#include <des.h> /* BSD wont include this in krb.h, so we do it here */
+#include <krb.h>
+#ifdef __STDC__
+#include <stdlib.h>
+#endif
+#ifdef NO_STRING_H
+#include <strings.h>
+#else
+#include <string.h>
+#endif
+
+#include "encrypt.h"
+#include "auth.h"
+#include "misc.h"
+
+int kerberos4_cksum P((unsigned char *, int));
+int krb_mk_req P((KTEXT, char *, char *, char *, u_long));
+int krb_rd_req P((KTEXT, char *, char *, u_long, AUTH_DAT *, char *));
+int krb_kntoln P((AUTH_DAT *, char *));
+int krb_get_cred P((char *, char *, char *, CREDENTIALS *));
+int krb_get_lrealm P((char *, int));
+int kuserok P((AUTH_DAT *, char *));
+
+extern auth_debug_mode;
+
+static unsigned char str_data[1024] = { IAC, SB, TELOPT_AUTHENTICATION, 0,
+ AUTHTYPE_KERBEROS_V4, };
+static unsigned char str_name[1024] = { IAC, SB, TELOPT_AUTHENTICATION,
+ TELQUAL_NAME, };
+
+#define KRB_AUTH 0 /* Authentication data follows */
+#define KRB_REJECT 1 /* Rejected (reason might follow) */
+#define KRB_ACCEPT 2 /* Accepted */
+#define KRB_CHALLENGE 3 /* Challenge for mutual auth. */
+#define KRB_RESPONSE 4 /* Response for mutual auth. */
+
+#define KRB_SERVICE_NAME "rcmd"
+
+static KTEXT_ST auth;
+static char name[ANAME_SZ];
+static AUTH_DAT adat = { 0 };
+#if defined(ENCRYPTION)
+static Block session_key = { 0 };
+static Schedule sched;
+static Block challenge = { 0 };
+#endif
+
+ static int
+Data(ap, type, d, c)
+ Authenticator *ap;
+ int type;
+ void *d;
+ int c;
+{
+ unsigned char *p = str_data + 4;
+ unsigned char *cd = (unsigned char *)d;
+
+ if (c == -1)
+ c = strlen((char *)cd);
+
+ if (auth_debug_mode) {
+ printf("%s:%d: [%d] (%d)",
+ str_data[3] == TELQUAL_IS ? ">>>IS" : ">>>REPLY",
+ str_data[3],
+ type, c);
+ printd(d, c);
+ printf("\r\n");
+ }
+ *p++ = ap->type;
+ *p++ = ap->way;
+ *p++ = type;
+ while (c-- > 0) {
+ if ((*p++ = *cd++) == IAC)
+ *p++ = IAC;
+ }
+ *p++ = IAC;
+ *p++ = SE;
+ if (str_data[3] == TELQUAL_IS)
+ printsub('>', &str_data[2], p - (&str_data[2]));
+ return(net_write(str_data, p - str_data));
+}
+
+ int
+kerberos4_init(ap, server)
+ Authenticator *ap;
+ int server;
+{
+ FILE *fp;
+
+ if (server) {
+ str_data[3] = TELQUAL_REPLY;
+ if ((fp = fopen(KEYFILE, "r")) == NULL)
+ return(0);
+ fclose(fp);
+ } else {
+ str_data[3] = TELQUAL_IS;
+ }
+ return(1);
+}
+
+char dst_realm_buf[REALM_SZ], *dest_realm = NULL;
+int dst_realm_sz = REALM_SZ;
+
+ int
+kerberos4_send(ap)
+ Authenticator *ap;
+{
+ KTEXT_ST auth;
+ Block enckey;
+ char instance[INST_SZ];
+ char *realm;
+ char *krb_realmofhost();
+ char *krb_get_phost();
+ CREDENTIALS cred;
+ int r;
+
+ printf("[ Trying KERBEROS4 ... ]\n");
+ if (!UserNameRequested) {
+ if (auth_debug_mode) {
+ printf("Kerberos V4: no user name supplied\r\n");
+ }
+ return(0);
+ }
+
+ bzero(instance, sizeof(instance));
+
+ if (realm = krb_get_phost(RemoteHostName))
+ strncpy(instance, realm, sizeof(instance));
+
+ instance[sizeof(instance)-1] = '\0';
+
+ realm = dest_realm ? dest_realm : krb_realmofhost(RemoteHostName);
+
+ if (!realm) {
+ printf("Kerberos V4: no realm for %s\r\n", RemoteHostName);
+ return(0);
+ }
+ if (r = krb_mk_req(&auth, KRB_SERVICE_NAME, instance, realm, 0L)) {
+ printf("mk_req failed: %s\r\n", krb_err_txt[r]);
+ return(0);
+ }
+ if (r = krb_get_cred(KRB_SERVICE_NAME, instance, realm, &cred)) {
+ printf("get_cred failed: %s\r\n", krb_err_txt[r]);
+ return(0);
+ }
+ if (!auth_sendname(UserNameRequested, strlen(UserNameRequested))) {
+ if (auth_debug_mode)
+ printf("Not enough room for user name\r\n");
+ return(0);
+ }
+ if (auth_debug_mode)
+ printf("Sent %d bytes of authentication data\r\n", auth.length);
+ if (!Data(ap, KRB_AUTH, (void *)auth.dat, auth.length)) {
+ if (auth_debug_mode)
+ printf("Not enough room for authentication data\r\n");
+ return(0);
+ }
+#if defined(ENCRYPTION)
+ /*
+ * If we are doing mutual authentication, get set up to send
+ * the challenge, and verify it when the response comes back.
+ */
+ if ((ap->way & AUTH_HOW_MASK) == AUTH_HOW_MUTUAL) {
+ register int i;
+
+ des_key_sched(cred.session, sched);
+ des_set_random_generator_seed(cred.session);
+ des_new_random_key(challenge);
+ des_ecb_encrypt(challenge, session_key, sched, 1);
+ /*
+ * Increment the challenge by 1, and encrypt it for
+ * later comparison.
+ */
+ for (i = 7; i >= 0; --i) {
+ register int x;
+ x = (unsigned int)challenge[i] + 1;
+ challenge[i] = x; /* ignore overflow */
+ if (x < 256) /* if no overflow, all done */
+ break;
+ }
+ des_ecb_encrypt(challenge, challenge, sched, 1);
+ }
+#endif
+
+ if (auth_debug_mode) {
+ printf("CK: %d:", kerberos4_cksum(auth.dat, auth.length));
+ printd(auth.dat, auth.length);
+ printf("\r\n");
+ printf("Sent Kerberos V4 credentials to server\r\n");
+ }
+ return(1);
+}
+
+ void
+kerberos4_is(ap, data, cnt)
+ Authenticator *ap;
+ unsigned char *data;
+ int cnt;
+{
+ Session_Key skey;
+ Block datablock;
+ char realm[REALM_SZ];
+ char instance[INST_SZ];
+ int r;
+
+ if (cnt-- < 1)
+ return;
+ switch (*data++) {
+ case KRB_AUTH:
+ if (krb_get_lrealm(realm, 1) != KSUCCESS) {
+ Data(ap, KRB_REJECT, (void *)"No local V4 Realm.", -1);
+ auth_finished(ap, AUTH_REJECT);
+ if (auth_debug_mode)
+ printf("No local realm\r\n");
+ return;
+ }
+ bcopy((void *)data, (void *)auth.dat, auth.length = cnt);
+ if (auth_debug_mode) {
+ printf("Got %d bytes of authentication data\r\n", cnt);
+ printf("CK: %d:", kerberos4_cksum(auth.dat, auth.length));
+ printd(auth.dat, auth.length);
+ printf("\r\n");
+ }
+ instance[0] = '*'; instance[1] = 0;
+ if (r = krb_rd_req(&auth, KRB_SERVICE_NAME,
+ instance, 0, &adat, "")) {
+ if (auth_debug_mode)
+ printf("Kerberos failed him as %s\r\n", name);
+ Data(ap, KRB_REJECT, (void *)krb_err_txt[r], -1);
+ auth_finished(ap, AUTH_REJECT);
+ return;
+ }
+#ifdef ENCRYPTION
+ bcopy((void *)adat.session, (void *)session_key, sizeof(Block));
+#endif
+ krb_kntoln(&adat, name);
+
+ if (UserNameRequested && !kuserok(&adat, UserNameRequested))
+ Data(ap, KRB_ACCEPT, (void *)0, 0);
+ else
+ Data(ap, KRB_REJECT,
+ (void *)"user is not authorized", -1);
+ auth_finished(ap, AUTH_USER);
+ break;
+
+ case KRB_CHALLENGE:
+#if !defined(ENCRYPTION)
+ Data(ap, KRB_RESPONSE, (void *)0, 0);
+#else
+ if (!VALIDKEY(session_key)) {
+ /*
+ * We don't have a valid session key, so just
+ * send back a response with an empty session
+ * key.
+ */
+ Data(ap, KRB_RESPONSE, (void *)0, 0);
+ break;
+ }
+
+ des_key_sched(session_key, sched);
+ bcopy((void *)data, (void *)datablock, sizeof(Block));
+ /*
+ * Take the received encrypted challenge, and encrypt
+ * it again to get a unique session_key for the
+ * ENCRYPT option.
+ */
+ des_ecb_encrypt(datablock, session_key, sched, 1);
+ skey.type = SK_DES;
+ skey.length = 8;
+ skey.data = session_key;
+ encrypt_session_key(&skey, 1);
+ /*
+ * Now decrypt the received encrypted challenge,
+ * increment by one, re-encrypt it and send it back.
+ */
+ des_ecb_encrypt(datablock, challenge, sched, 0);
+ for (r = 7; r >= 0; r++) {
+ register int t;
+ t = (unsigned int)challenge[r] + 1;
+ challenge[r] = t; /* ignore overflow */
+ if (t < 256) /* if no overflow, all done */
+ break;
+ }
+ des_ecb_encrypt(challenge, challenge, sched, 1);
+ Data(ap, KRB_RESPONSE, (void *)challenge, sizeof(challenge));
+#endif
+ break;
+
+ default:
+ if (auth_debug_mode)
+ printf("Unknown Kerberos option %d\r\n", data[-1]);
+ Data(ap, KRB_REJECT, 0, 0);
+ break;
+ }
+}
+
+ void
+kerberos4_reply(ap, data, cnt)
+ Authenticator *ap;
+ unsigned char *data;
+ int cnt;
+{
+ Session_Key skey;
+
+ if (cnt-- < 1)
+ return;
+ switch (*data++) {
+ case KRB_REJECT:
+ if (cnt > 0) {
+ printf("[ Kerberos V4 refuses authentication because %.*s ]\r\n",
+ cnt, data);
+ } else
+ printf("[ Kerberos V4 refuses authentication ]\r\n");
+ auth_send_retry();
+ return;
+ case KRB_ACCEPT:
+ printf("[ Kerberos V4 accepts you ]\n");
+ if ((ap->way & AUTH_HOW_MASK) == AUTH_HOW_MUTUAL) {
+ /*
+ * Send over the encrypted challenge.
+ */
+#if !defined(ENCRYPTION)
+ Data(ap, KRB_CHALLENGE, (void *)0, 0);
+#else
+ Data(ap, KRB_CHALLENGE, (void *)session_key,
+ sizeof(session_key));
+ des_ecb_encrypt(session_key, session_key, sched, 1);
+ skey.type = SK_DES;
+ skey.length = 8;
+ skey.data = session_key;
+ encrypt_session_key(&skey, 0);
+#endif
+ return;
+ }
+ auth_finished(ap, AUTH_USER);
+ return;
+ case KRB_RESPONSE:
+#if defined(ENCRYPTION)
+ /*
+ * Verify that the response to the challenge is correct.
+ */
+ if ((cnt != sizeof(Block)) ||
+ (0 != memcmp((void *)data, (void *)challenge,
+ sizeof(challenge))))
+ {
+#endif
+ printf("[ Kerberos V4 challenge failed!!! ]\r\n");
+ auth_send_retry();
+ return;
+#if defined(ENCRYPTION)
+ }
+ printf("[ Kerberos V4 challenge successful ]\r\n");
+ auth_finished(ap, AUTH_USER);
+#endif
+ break;
+ default:
+ if (auth_debug_mode)
+ printf("Unknown Kerberos option %d\r\n", data[-1]);
+ return;
+ }
+}
+
+ int
+kerberos4_status(ap, name, level)
+ Authenticator *ap;
+ char *name;
+ int level;
+{
+ if (level < AUTH_USER)
+ return(level);
+
+ if (UserNameRequested && !kuserok(&adat, UserNameRequested)) {
+ strcpy(name, UserNameRequested);
+ return(AUTH_VALID);
+ } else
+ return(AUTH_USER);
+}
+
+#define BUMP(buf, len) while (*(buf)) {++(buf), --(len);}
+#define ADDC(buf, len, c) if ((len) > 0) {*(buf)++ = (c); --(len);}
+
+ void
+kerberos4_printsub(data, cnt, buf, buflen)
+ unsigned char *data, *buf;
+ int cnt, buflen;
+{
+ char lbuf[32];
+ register int i;
+
+ buf[buflen-1] = '\0'; /* make sure its NULL terminated */
+ buflen -= 1;
+
+ switch(data[3]) {
+ case KRB_REJECT: /* Rejected (reason might follow) */
+ strncpy((char *)buf, " REJECT ", buflen);
+ goto common;
+
+ case KRB_ACCEPT: /* Accepted (name might follow) */
+ strncpy((char *)buf, " ACCEPT ", buflen);
+ common:
+ BUMP(buf, buflen);
+ if (cnt <= 4)
+ break;
+ ADDC(buf, buflen, '"');
+ for (i = 4; i < cnt; i++)
+ ADDC(buf, buflen, data[i]);
+ ADDC(buf, buflen, '"');
+ ADDC(buf, buflen, '\0');
+ break;
+
+ case KRB_AUTH: /* Authentication data follows */
+ strncpy((char *)buf, " AUTH", buflen);
+ goto common2;
+
+ case KRB_CHALLENGE:
+ strncpy((char *)buf, " CHALLENGE", buflen);
+ goto common2;
+
+ case KRB_RESPONSE:
+ strncpy((char *)buf, " RESPONSE", buflen);
+ goto common2;
+
+ default:
+ sprintf(lbuf, " %d (unknown)", data[3]);
+ strncpy((char *)buf, lbuf, buflen);
+ common2:
+ BUMP(buf, buflen);
+ for (i = 4; i < cnt; i++) {
+ sprintf(lbuf, " %d", data[i]);
+ strncpy((char *)buf, lbuf, buflen);
+ BUMP(buf, buflen);
+ }
+ break;
+ }
+}
+
+ int
+kerberos4_cksum(d, n)
+ unsigned char *d;
+ int n;
+{
+ int ck = 0;
+
+ /*
+ * A comment is probably needed here for those not
+ * well versed in the "C" language. Yes, this is
+ * supposed to be a "switch" with the body of the
+ * "switch" being a "while" statement. The whole
+ * purpose of the switch is to allow us to jump into
+ * the middle of the while() loop, and then not have
+ * to do any more switch()s.
+ *
+ * Some compilers will spit out a warning message
+ * about the loop not being entered at the top.
+ */
+ switch (n&03)
+ while (n > 0) {
+ case 0:
+ ck ^= (int)*d++ << 24;
+ --n;
+ case 3:
+ ck ^= (int)*d++ << 16;
+ --n;
+ case 2:
+ ck ^= (int)*d++ << 8;
+ --n;
+ case 1:
+ ck ^= (int)*d++;
+ --n;
+ }
+ return(ck);
+}
+#endif
+
+#ifdef notdef
+
+prkey(msg, key)
+ char *msg;
+ unsigned char *key;
+{
+ register int i;
+ printf("%s:", msg);
+ for (i = 0; i < 8; i++)
+ printf(" %3d", key[i]);
+ printf("\r\n");
+}
+#endif
--- /dev/null
+/*
+ * $Source$
+ * $Author$
+ * $Id$
+ */
+
+#if !defined(lint) && !defined(SABER)
+static
+#ifdef __STDC__
+const
+#endif
+char rcsid_kerberos5_c[] = "$Id$";
+#endif /* lint */
+
+/*-
+ * Copyright (c) 1991 The Regents of the University of California.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef lint
+static char sccsid[] = "@(#)kerberos5.c 5.3 (Berkeley) 12/18/92";
+#endif /* not lint */
+
+/*
+ * Copyright (C) 1990 by the Massachusetts Institute of Technology
+ *
+ * Export of this software from the United States of America is assumed
+ * to require a specific license from the United States Government.
+ * It is the responsibility of any person or organization contemplating
+ * export to obtain such a license before exporting.
+ *
+ * WITHIN THAT CONSTRAINT, permission to use, copy, modify, and
+ * distribute this software and its documentation for any purpose and
+ * without fee is hereby granted, provided that the above copyright
+ * notice appear in all copies and that both that copyright notice and
+ * this permission notice appear in supporting documentation, and that
+ * the name of M.I.T. not be used in advertising or publicity pertaining
+ * to distribution of the software without specific, written prior
+ * permission. M.I.T. makes no representations about the suitability of
+ * this software for any purpose. It is provided "as is" without express
+ * or implied warranty.
+ */
+
+
+#ifdef KRB5
+#include <arpa/telnet.h>
+#include <stdio.h>
+#include <krb5/krb5.h>
+#include <krb5/asn1.h>
+#include <krb5/crc-32.h>
+#include <krb5/los-proto.h>
+#include <krb5/ext-proto.h>
+#include <com_err.h>
+#include <netdb.h>
+#include <ctype.h>
+
+
+/* kerberos 5 include files (ext-proto.h) will get an appropriate stdlib.h
+ and string.h/strings.h */
+
+#include "encrypt.h"
+#include "auth.h"
+#include "misc.h"
+
+extern auth_debug_mode;
+int forward_flags = 0; /* Flags get set in telnet/main.c on -f and -F */
+
+/* These values need to be the same as those defined in telnet/main.c. */
+/* Either define them in both places, or put in some common header file. */
+#define OPTS_FORWARD_CREDS 0x00000002
+#define OPTS_FORWARDABLE_CREDS 0x00000001
+
+static unsigned char str_data[1024] = { IAC, SB, TELOPT_AUTHENTICATION, 0,
+ AUTHTYPE_KERBEROS_V5, };
+/*static unsigned char str_name[1024] = { IAC, SB, TELOPT_AUTHENTICATION,
+ TELQUAL_NAME, };*/
+
+#define KRB_AUTH 0 /* Authentication data follows */
+#define KRB_REJECT 1 /* Rejected (reason might follow) */
+#define KRB_ACCEPT 2 /* Accepted */
+#define KRB_RESPONSE 3 /* Response for mutual auth. */
+#define KRB_FORWARD 4 /* Forwarded credentials follow */
+
+static krb5_data auth;
+ /* telnetd gets session key from here */
+static krb5_tkt_authent *authdat = NULL;
+/* telnet matches the AP_REQ and AP_REP with this */
+static krb5_authenticator authenticator;
+
+/* some compilers can't hack void *, so we use the Kerberos krb5_pointer,
+ which is either void * or char *, depending on the compiler. */
+
+#define Voidptr krb5_pointer
+
+#if defined(ENCRYPTION)
+Block session_key;
+#endif
+ static int
+Data(ap, type, d, c)
+ Authenticator *ap;
+ int type;
+ Voidptr d;
+ int c;
+{
+ unsigned char *p = str_data + 4;
+ unsigned char *cd = (unsigned char *)d;
+
+ if (c == -1)
+ c = strlen((char *)cd);
+
+ if (auth_debug_mode) {
+ printf("%s:%d: [%d] (%d)",
+ str_data[3] == TELQUAL_IS ? ">>>IS" : ">>>REPLY",
+ str_data[3],
+ type, c);
+ printd(d, c);
+ printf("\r\n");
+ }
+ *p++ = ap->type;
+ *p++ = ap->way;
+ *p++ = type;
+ while (c-- > 0) {
+ if ((*p++ = *cd++) == IAC)
+ *p++ = IAC;
+ }
+ *p++ = IAC;
+ *p++ = SE;
+ if (str_data[3] == TELQUAL_IS)
+ printsub('>', &str_data[2], p - &str_data[2]);
+ return(net_write(str_data, p - str_data));
+}
+
+ int
+kerberos5_init(ap, server)
+ Authenticator *ap;
+ int server;
+{
+ if (server)
+ str_data[3] = TELQUAL_REPLY;
+ else
+ str_data[3] = TELQUAL_IS;
+ krb5_init_ets();
+ return(1);
+}
+
+ int
+kerberos5_send(ap)
+ Authenticator *ap;
+{
+ char **realms;
+ char *name;
+ char *p1, *p2;
+ krb5_checksum ksum;
+ krb5_octet sum[CRC32_CKSUM_LENGTH];
+ krb5_principal server;
+ krb5_error_code r;
+ krb5_ccache ccache;
+ krb5_creds creds; /* telnet gets session key from here */
+ extern krb5_flags krb5_kdc_default_options;
+ int ap_opts;
+
+#if defined(ENCRYPTION)
+ krb5_keyblock *newkey = 0;
+#endif
+
+ ksum.checksum_type = CKSUMTYPE_CRC32;
+ ksum.contents = sum;
+ ksum.length = sizeof(sum);
+ bzero((Voidptr )sum, sizeof(sum));
+
+ if (!UserNameRequested) {
+ if (auth_debug_mode) {
+ printf("Kerberos V5: no user name supplied\r\n");
+ }
+ return(0);
+ }
+
+ if (r = krb5_cc_default(&ccache)) {
+ if (auth_debug_mode) {
+ printf("Kerberos V5: could not get default ccache\r\n");
+ }
+ return(0);
+ }
+
+ if ((name = malloc(strlen(RemoteHostName)+1)) == NULL) {
+ if (auth_debug_mode)
+ printf("Out of memory for hostname in Kerberos V5\r\n");
+ return(0);
+ }
+
+ if (r = krb5_get_host_realm(RemoteHostName, &realms)) {
+ if (auth_debug_mode)
+ printf("Kerberos V5: no realm for %s\r\n", RemoteHostName);
+ free(name);
+ return(0);
+ }
+
+ p1 = RemoteHostName;
+ p2 = name;
+
+ while (*p2 = *p1++) {
+ if (isupper(*p2))
+ *p2 |= 040;
+ ++p2;
+ }
+
+ if (r = krb5_build_principal_ext(&server,
+ strlen(realms[0]), realms[0],
+ 4, "host",
+ p2 - name, name,
+ 0)) {
+ if (auth_debug_mode) {
+ printf("Kerberos V5: failure setting up principal (%s)\r\n",
+ error_message(r));
+ }
+ free(name);
+ krb5_free_host_realm(realms);
+ return(0);
+ }
+
+
+ bzero((char *)&creds, sizeof(creds));
+ creds.server = server;
+
+ if (r = krb5_cc_get_principal(ccache, &creds.client)) {
+ if (auth_debug_mode) {
+ printf("Kerberos V5: failure on principal (%s)\r\n",
+ error_message(r));
+ }
+ free(name);
+ krb5_free_principal(server);
+ krb5_free_host_realm(realms);
+ return(0);
+ }
+
+ if (r = krb5_get_credentials(krb5_kdc_default_options, ccache, &creds)) {
+ if (auth_debug_mode) {
+ printf("Kerberos V5: failure on credentials(%d)\r\n",r);
+ }
+ free(name);
+ krb5_free_host_realm(realms);
+ krb5_free_principal(server);
+ return(0);
+ }
+
+ if ((ap->way & AUTH_HOW_MASK) == AUTH_HOW_MUTUAL)
+ ap_opts = AP_OPTS_MUTUAL_REQUIRED;
+ else
+ ap_opts = 0;
+
+ r = krb5_mk_req_extended(ap_opts, &ksum, krb5_kdc_default_options, 0,
+#if defined(ENCRYPTION)
+ &newkey,
+#else
+ 0,
+#endif
+ ccache, &creds, &authenticator, &auth);
+ /* don't let the key get freed if we clean up the authenticator */
+ authenticator.subkey = 0;
+
+ free(name);
+ krb5_free_host_realm(realms);
+ krb5_free_principal(server);
+#if defined(ENCRYPTION)
+ if (newkey) {
+ /* keep the key in our private storage, but don't use it
+ yet---see kerberos5_reply() below */
+ if (newkey->keytype != KEYTYPE_DES) {
+ if (creds.keyblock.keytype == KEYTYPE_DES)
+ /* use the session key in credentials instead */
+ memcpy((char *)session_key,
+ (char *)creds.keyblock.contents, sizeof(Block));
+ else
+ /* XXX ? */;
+ } else {
+ memcpy((char *)session_key, (char *)newkey->contents,
+ sizeof(Block));
+ }
+ krb5_free_keyblock(newkey);
+ }
+#endif
+ if (r) {
+ if (auth_debug_mode) {
+ printf("Kerberos V5: mk_req failed (%s)\r\n",
+ error_message(r));
+ }
+ return(0);
+ }
+
+ if (!auth_sendname(UserNameRequested, strlen(UserNameRequested))) {
+ if (auth_debug_mode)
+ printf("Not enough room for user name\r\n");
+ return(0);
+ }
+ if (!Data(ap, KRB_AUTH, auth.data, auth.length)) {
+ if (auth_debug_mode)
+ printf("Not enough room for authentication data\r\n");
+ return(0);
+ }
+ if (auth_debug_mode) {
+ printf("Sent Kerberos V5 credentials to server\r\n");
+ }
+ return(1);
+}
+
+ void
+kerberos5_is(ap, data, cnt)
+ Authenticator *ap;
+ unsigned char *data;
+ int cnt;
+{
+ int r;
+ struct hostent *hp;
+ char *p1, *p2;
+ static char *realm = NULL;
+ krb5_principal server;
+ krb5_ap_rep_enc_part reply;
+ krb5_data outbuf;
+ Session_Key skey;
+ char *name;
+ char *getenv();
+ krb5_data inbuf;
+
+ if (cnt-- < 1)
+ return;
+ switch (*data++) {
+ case KRB_AUTH:
+ auth.data = (char *)data;
+ auth.length = cnt;
+
+ if (!(hp = gethostbyname(LocalHostName))) {
+ if (auth_debug_mode)
+ printf("Cannot resolve local host name\r\n");
+ Data(ap, KRB_REJECT, "Unknown local hostname.", -1);
+ auth_finished(ap, AUTH_REJECT);
+ return;
+ }
+
+ if (!realm && (krb5_get_default_realm(&realm))) {
+ if (auth_debug_mode)
+ printf("Could not get default realm\r\n");
+ Data(ap, KRB_REJECT, "Could not get default realm.", -1);
+ auth_finished(ap, AUTH_REJECT);
+ return;
+ }
+
+ if ((name = malloc(strlen(hp->h_name)+1)) == NULL) {
+ if (auth_debug_mode)
+ printf("Out of memory for hostname in Kerberos V5\r\n");
+ Data(ap, KRB_REJECT, "Out of memory.", -1);
+ auth_finished(ap, AUTH_REJECT);
+ return;
+ }
+
+ p1 = hp->h_name;
+ p2 = name;
+
+ while (*p2 = *p1++) {
+ if (isupper(*p2))
+ *p2 |= 040;
+ ++p2;
+ }
+
+ if (authdat)
+ krb5_free_tkt_authent(authdat);
+
+ r = krb5_build_principal_ext(&server,
+ strlen(realm), realm,
+ 4, "host",
+ p2 - name, name,
+ 0);
+ if (!r) {
+ r = krb5_rd_req_simple(&auth, server, 0, &authdat);
+ krb5_free_principal(server);
+ }
+ if (r) {
+ char errbuf[128];
+
+ errout:
+ authdat = 0;
+ (void) strcpy(errbuf, "Read req failed: ");
+ (void) strcat(errbuf, error_message(r));
+ Data(ap, KRB_REJECT, errbuf, -1);
+ if (auth_debug_mode)
+ printf("%s\r\n", errbuf);
+ return;
+ }
+ free(name);
+ if ((ap->way & AUTH_HOW_MASK) == AUTH_HOW_MUTUAL) {
+ /* do ap_rep stuff here */
+ reply.ctime = authdat->authenticator->ctime;
+ reply.cusec = authdat->authenticator->cusec;
+ reply.subkey = 0; /* use the one he gave us, so don't
+ need to return one here */
+ reply.seq_number = 0; /* we don't do seq #'s. */
+
+ if (r = krb5_mk_rep(&reply,
+ authdat->authenticator->subkey ?
+ authdat->authenticator->subkey :
+ authdat->ticket->enc_part2->session,
+ &outbuf)) {
+ goto errout;
+ }
+ Data(ap, KRB_RESPONSE, outbuf.data, outbuf.length);
+ }
+ if (krb5_unparse_name(authdat->ticket->enc_part2 ->client,
+ &name))
+ name = 0;
+ Data(ap, KRB_ACCEPT, name, name ? -1 : 0);
+ if (auth_debug_mode) {
+ printf("Kerberos5 identifies him as ``%s''\r\n",
+ name ? name : "");
+ }
+ auth_finished(ap, AUTH_USER);
+
+ free(name);
+ if (authdat->authenticator->subkey &&
+ authdat->authenticator->subkey->keytype == KEYTYPE_DES) {
+ bcopy((Voidptr )authdat->authenticator->subkey->contents,
+ (Voidptr )session_key, sizeof(Block));
+ } else if (authdat->ticket->enc_part2->session->keytype ==
+ KEYTYPE_DES) {
+ bcopy((Voidptr )authdat->ticket->enc_part2->session->contents,
+ (Voidptr )session_key, sizeof(Block));
+ } else
+ break;
+
+ skey.type = SK_DES;
+ skey.length = 8;
+ skey.data = session_key;
+ encrypt_session_key(&skey, 1);
+ break;
+ case KRB_FORWARD:
+ inbuf.data = (char *)data;
+ inbuf.length = cnt;
+ if (r = rd_and_store_for_creds(&inbuf, authdat->ticket,
+ UserNameRequested)) {
+ if (auth_debug_mode)
+ printf("Could not read forwarded credentials\r\n");
+ }
+ else
+ if (auth_debug_mode)
+ printf("Forwarded credentials obtained\r\n");
+ break;
+ default:
+ if (auth_debug_mode)
+ printf("Unknown Kerberos option %d\r\n", data[-1]);
+ Data(ap, KRB_REJECT, 0, 0);
+ break;
+ }
+}
+
+ void
+kerberos5_reply(ap, data, cnt)
+ Authenticator *ap;
+ unsigned char *data;
+ int cnt;
+{
+ Session_Key skey;
+ static int mutual_complete = 0;
+
+ if (cnt-- < 1)
+ return;
+ switch (*data++) {
+ case KRB_REJECT:
+ if (cnt > 0) {
+ printf("[ Kerberos V5 refuses authentication because %.*s ]\r\n",
+ cnt, data);
+ } else
+ printf("[ Kerberos V5 refuses authentication ]\r\n");
+ auth_send_retry();
+ return;
+ case KRB_ACCEPT:
+ if ((ap->way & AUTH_HOW_MASK) == AUTH_HOW_MUTUAL &&
+ !mutual_complete) {
+ printf("[ Kerberos V5 accepted you, but didn't provide mutual authentication! ]\n");
+ auth_send_retry();
+ return;
+ }
+ if (cnt)
+ printf("[ Kerberos V5 accepts you as ``%.*s'' ]\n", cnt, data);
+ else
+ printf("[ Kerberos V5 accepts you ]\n");
+ auth_finished(ap, AUTH_USER);
+ if (forward_flags & OPTS_FORWARD_CREDS)
+ kerberos5_forward(ap);
+ break;
+ case KRB_RESPONSE:
+ if ((ap->way & AUTH_HOW_MASK) == AUTH_HOW_MUTUAL) {
+ /* the rest of the reply should contain a krb_ap_rep */
+ krb5_ap_rep_enc_part *reply;
+ krb5_data inbuf;
+ krb5_error_code r;
+ krb5_keyblock tmpkey;
+
+ inbuf.length = cnt;
+ inbuf.data = (char *)data;
+
+ tmpkey.keytype = KEYTYPE_DES;
+ tmpkey.contents = session_key;
+ tmpkey.length = sizeof(Block);
+
+ if (r = krb5_rd_rep(&inbuf, &tmpkey, &reply)) {
+ printf("[ Mutual authentication failed: %s ]\n",
+ error_message(r));
+ auth_send_retry();
+ return;
+ }
+ if (reply->ctime != authenticator.ctime ||
+ reply->cusec != authenticator.cusec) {
+ printf("[ Mutual authentication failed (mismatched KRB_AP_REP) ]\n");
+ auth_send_retry();
+ return;
+ }
+ krb5_free_ap_rep_enc_part(reply);
+#if defined(ENCRYPTION)
+ skey.type = SK_DES;
+ skey.length = 8;
+ skey.data = session_key;
+ encrypt_session_key(&skey, 0);
+#endif
+ mutual_complete = 1;
+ }
+ return;
+ default:
+ if (auth_debug_mode)
+ printf("Unknown Kerberos option %d\r\n", data[-1]);
+ return;
+ }
+}
+
+ int
+kerberos5_status(ap, name, level)
+ Authenticator *ap;
+ char *name;
+ int level;
+{
+ if (level < AUTH_USER)
+ return(level);
+
+ if (UserNameRequested &&
+ krb5_kuserok(authdat->ticket->enc_part2->client, UserNameRequested))
+ {
+ strcpy(name, UserNameRequested);
+ return(AUTH_VALID);
+ } else
+ return(AUTH_USER);
+}
+
+#define BUMP(buf, len) while (*(buf)) {++(buf), --(len);}
+#define ADDC(buf, len, c) if ((len) > 0) {*(buf)++ = (c); --(len);}
+
+ void
+kerberos5_printsub(data, cnt, buf, buflen)
+ unsigned char *data, *buf;
+ int cnt, buflen;
+{
+ char lbuf[32];
+ register int i;
+
+ buf[buflen-1] = '\0'; /* make sure its NULL terminated */
+ buflen -= 1;
+
+ switch(data[3]) {
+ case KRB_REJECT: /* Rejected (reason might follow) */
+ strncpy((char *)buf, " REJECT ", buflen);
+ goto common;
+
+ case KRB_ACCEPT: /* Accepted (name might follow) */
+ strncpy((char *)buf, " ACCEPT ", buflen);
+ common:
+ BUMP(buf, buflen);
+ if (cnt <= 4)
+ break;
+ ADDC(buf, buflen, '"');
+ for (i = 4; i < cnt; i++)
+ ADDC(buf, buflen, data[i]);
+ ADDC(buf, buflen, '"');
+ ADDC(buf, buflen, '\0');
+ break;
+
+
+ case KRB_AUTH: /* Authentication data follows */
+ strncpy((char *)buf, " AUTH", buflen);
+ goto common2;
+
+ case KRB_RESPONSE:
+ strncpy((char *)buf, " RESPONSE", buflen);
+ goto common2;
+
+ case KRB_FORWARD: /* Forwarded credentials follow */
+ strncpy((char *)buf, " FORWARD", buflen);
+ goto common2;
+
+ default:
+ sprintf(lbuf, " %d (unknown)", data[3]);
+ strncpy((char *)buf, lbuf, buflen);
+ common2:
+ BUMP(buf, buflen);
+ for (i = 4; i < cnt; i++) {
+ sprintf(lbuf, " %d", data[i]);
+ strncpy((char *)buf, lbuf, buflen);
+ BUMP(buf, buflen);
+ }
+ break;
+ }
+}
+
+ void
+kerberos5_forward(ap)
+ Authenticator *ap;
+{
+ struct hostent *hp;
+ krb5_creds *local_creds;
+ krb5_error_code r;
+ krb5_data forw_creds;
+ extern krb5_cksumtype krb5_kdc_req_sumtype;
+ krb5_ccache ccache;
+ int i;
+
+ if (!(local_creds = (krb5_creds *)
+ calloc(1, sizeof(*local_creds)))) {
+ if (auth_debug_mode)
+ printf("Kerberos V5: could not allocate memory for credentials\r\n");
+ return;
+ }
+
+ if (r = krb5_sname_to_principal(RemoteHostName, "host", 1,
+ &local_creds->server)) {
+ if (auth_debug_mode)
+ printf("Kerberos V5: could not build server name - %s\r\n",
+ error_message(r));
+ krb5_free_creds(local_creds);
+ return;
+ }
+
+ if (r = krb5_cc_default(&ccache)) {
+ if (auth_debug_mode)
+ printf("Kerberos V5: could not get default ccache - %s\r\n",
+ error_message(r));
+ krb5_free_creds(local_creds);
+ return;
+ }
+
+ if (r = krb5_cc_get_principal(ccache, &local_creds->client)) {
+ if (auth_debug_mode)
+ printf("Kerberos V5: could not get default principal - %s\r\n",
+ error_message(r));
+ krb5_free_creds(local_creds);
+ return;
+ }
+
+ /* Get ticket from credentials cache */
+ if (r = krb5_get_credentials(KRB5_GC_CACHED, ccache, local_creds)) {
+ if (auth_debug_mode)
+ printf("Kerberos V5: could not obtain credentials - %s\r\n",
+ error_message(r));
+ krb5_free_creds(local_creds);
+ return;
+ }
+
+ if (r = get_for_creds(ETYPE_DES_CBC_CRC,
+ krb5_kdc_req_sumtype,
+ RemoteHostName,
+ local_creds->client,
+ &local_creds->keyblock,
+ forward_flags & OPTS_FORWARDABLE_CREDS,
+ &forw_creds)) {
+ if (auth_debug_mode)
+ printf("Kerberos V5: error getting forwarded creds - %s\r\n",
+ error_message(r));
+ krb5_free_creds(local_creds);
+ return;
+ }
+
+ /* Send forwarded credentials */
+ if (!Data(ap, KRB_FORWARD, forw_creds.data, forw_creds.length)) {
+ if (auth_debug_mode)
+ printf("Not enough room for authentication data\r\n");
+ }
+ else {
+ if (auth_debug_mode)
+ printf("Forwarded local Kerberos V5 credentials to server\r\n");
+ }
+
+ krb5_free_creds(local_creds);
+}
+
+#endif /* KRB5 */
--- /dev/null
+/*-
+ * Copyright (c) 1991 The Regents of the University of California.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * @(#)key-proto.h 5.1 (Berkeley) 2/28/91
+ */
+
+/*
+ * Copyright (C) 1990 by the Massachusetts Institute of Technology
+ *
+ * Export of this software from the United States of America is assumed
+ * to require a specific license from the United States Government.
+ * It is the responsibility of any person or organization contemplating
+ * export to obtain such a license before exporting.
+ *
+ * WITHIN THAT CONSTRAINT, permission to use, copy, modify, and
+ * distribute this software and its documentation for any purpose and
+ * without fee is hereby granted, provided that the above copyright
+ * notice appear in all copies and that both that copyright notice and
+ * this permission notice appear in supporting documentation, and that
+ * the name of M.I.T. not be used in advertising or publicity pertaining
+ * to distribution of the software without specific, written prior
+ * permission. M.I.T. makes no representations about the suitability of
+ * this software for any purpose. It is provided "as is" without express
+ * or implied warranty.
+ */
+
+#ifndef __KEY_PROTO__
+#define __KEY_PROTO__
+
+#if !defined(P)
+#ifdef __STDC__
+#define P(x) x
+#else
+#define P(x) ()
+#endif
+#endif
+
+int key_file_exists P((void));
+void key_lookup P((unsigned char *, Block));
+void key_stream_init P((Block, Block, int));
+unsigned char key_stream P((int, int));
+#endif
--- /dev/null
+/*-
+ * Copyright (c) 1992 The Regents of the University of California.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef lint
+static char sccsid[] = "@(#)krb4encpwd.c 5.1 (Berkeley) 1/20/93";
+#endif /* not lint */
+
+
+#ifdef KRB4_ENCPWD
+/*
+ * COPYRIGHT (C) 1990 DIGITAL EQUIPMENT CORPORATION
+ * ALL RIGHTS RESERVED
+ *
+ * "Digital Equipment Corporation authorizes the reproduction,
+ * distribution and modification of this software subject to the following
+ * restrictions:
+ *
+ * 1. Any partial or whole copy of this software, or any modification
+ * thereof, must include this copyright notice in its entirety.
+ *
+ * 2. This software is supplied "as is" with no warranty of any kind,
+ * expressed or implied, for any purpose, including any warranty of fitness
+ * or merchantibility. DIGITAL assumes no responsibility for the use or
+ * reliability of this software, nor promises to provide any form of
+ * support for it on any basis.
+ *
+ * 3. Distribution of this software is authorized only if no profit or
+ * remuneration of any kind is received in exchange for such distribution.
+ *
+ * 4. This software produces public key authentication certificates
+ * bearing an expiration date established by DIGITAL and RSA Data
+ * Security, Inc. It may cease to generate certificates after the expiration
+ * date. Any modification of this software that changes or defeats
+ * the expiration date or its effect is unauthorized.
+ *
+ * 5. Software that will renew or extend the expiration date of
+ * authentication certificates produced by this software may be obtained
+ * from RSA Data Security, Inc., 10 Twin Dolphin Drive, Redwood City, CA
+ * 94065, (415)595-8782, or from DIGITAL"
+ *
+ */
+
+#include <sys/types.h>
+#include <arpa/telnet.h>
+#include <pwd.h>
+#include <stdio.h>
+
+#include <des.h>
+#include <krb.h>
+#ifdef __STDC__
+#include <stdlib.h>
+#endif
+#ifdef NO_STRING_H
+#include <strings.h>
+#else
+#include <string.h>
+#endif
+
+#include "encrypt.h"
+#include "auth.h"
+#include "misc.h"
+
+int krb_mk_encpwd_req P((KTEXT, char *, char *, char *, char *, char *, char *));
+int krb_rd_encpwd_req P((KTEXT, char *, char *, u_long, AUTH_DAT *, char *, char *, char *, char *));
+
+extern auth_debug_mode;
+
+static unsigned char str_data[1024] = { IAC, SB, TELOPT_AUTHENTICATION, 0,
+ AUTHTYPE_KRB4_ENCPWD, };
+static unsigned char str_name[1024] = { IAC, SB, TELOPT_AUTHENTICATION,
+ TELQUAL_NAME, };
+
+#define KRB4_ENCPWD_AUTH 0 /* Authentication data follows */
+#define KRB4_ENCPWD_REJECT 1 /* Rejected (reason might follow) */
+#define KRB4_ENCPWD_ACCEPT 2 /* Accepted */
+#define KRB4_ENCPWD_CHALLENGE 3 /* Challenge for mutual auth. */
+#define KRB4_ENCPWD_ACK 4 /* Acknowledge */
+
+#define KRB_SERVICE_NAME "rcmd"
+
+static KTEXT_ST auth;
+static char name[ANAME_SZ];
+static char user_passwd[ANAME_SZ];
+static AUTH_DAT adat = { 0 };
+#if defined(ENCRYPTION)
+static Block session_key = { 0 };
+#endif
+static Schedule sched;
+static char challenge[REALM_SZ];
+
+ static int
+Data(ap, type, d, c)
+ Authenticator *ap;
+ int type;
+ void *d;
+ int c;
+{
+ unsigned char *p = str_data + 4;
+ unsigned char *cd = (unsigned char *)d;
+
+ if (c == -1)
+ c = strlen((char *)cd);
+
+ if (0) {
+ printf("%s:%d: [%d] (%d)",
+ str_data[3] == TELQUAL_IS ? ">>>IS" : ">>>REPLY",
+ str_data[3],
+ type, c);
+ printd(d, c);
+ printf("\r\n");
+ }
+ *p++ = ap->type;
+ *p++ = ap->way;
+ *p++ = type;
+ while (c-- > 0) {
+ if ((*p++ = *cd++) == IAC)
+ *p++ = IAC;
+ }
+ *p++ = IAC;
+ *p++ = SE;
+ if (str_data[3] == TELQUAL_IS)
+ printsub('>', &str_data[2], p - (&str_data[2]));
+ return(net_write(str_data, p - str_data));
+}
+
+ int
+krb4encpwd_init(ap, server)
+ Authenticator *ap;
+ int server;
+{
+ char hostname[80], *cp, *realm;
+ C_Block skey;
+
+ if (server) {
+ str_data[3] = TELQUAL_REPLY;
+ } else {
+ str_data[3] = TELQUAL_IS;
+ gethostname(hostname, sizeof(hostname));
+ realm = krb_realmofhost(hostname);
+ cp = index(hostname, '.');
+ if (*cp != NULL) *cp = NULL;
+ if (read_service_key(KRB_SERVICE_NAME, hostname, realm, 0,
+ KEYFILE, (char *)skey)) {
+ return(0);
+ }
+ }
+ return(1);
+}
+
+ int
+krb4encpwd_send(ap)
+ Authenticator *ap;
+{
+
+ printf("[ Trying KRB4ENCPWD ... ]\n");
+ if (!UserNameRequested) {
+ return(0);
+ }
+ if (!auth_sendname(UserNameRequested, strlen(UserNameRequested))) {
+ return(0);
+ }
+
+ if (!Data(ap, KRB4_ENCPWD_ACK, (void *)NULL, 0)) {
+ return(0);
+ }
+
+ return(1);
+}
+
+ void
+krb4encpwd_is(ap, data, cnt)
+ Authenticator *ap;
+ unsigned char *data;
+ int cnt;
+{
+ Session_Key skey;
+ Block datablock;
+ char r_passwd[ANAME_SZ], r_user[ANAME_SZ];
+ char lhostname[ANAME_SZ], *cp;
+ int r;
+ time_t now;
+
+ if (cnt-- < 1)
+ return;
+ switch (*data++) {
+ case KRB4_ENCPWD_AUTH:
+ bcopy((void *)data, (void *)auth.dat, auth.length = cnt);
+
+ gethostname(lhostname, sizeof(lhostname));
+ if ((cp = index(lhostname, '.')) != 0) *cp = '\0';
+
+ if (r = krb_rd_encpwd_req(&auth, KRB_SERVICE_NAME, lhostname, 0, &adat, NULL, challenge, r_user, r_passwd)) {
+ Data(ap, KRB4_ENCPWD_REJECT, (void *)"Auth failed", -1);
+ auth_finished(ap, AUTH_REJECT);
+ return;
+ }
+ auth_encrypt_userpwd(r_passwd);
+ if (passwdok(UserNameRequested, UserPassword) == 0) {
+ /*
+ * illegal username and password
+ */
+ Data(ap, KRB4_ENCPWD_REJECT, (void *)"Illegal password", -1);
+ auth_finished(ap, AUTH_REJECT);
+ return;
+ }
+
+ bcopy((void *)adat.session, (void *)session_key, sizeof(Block));
+ Data(ap, KRB4_ENCPWD_ACCEPT, (void *)0, 0);
+ auth_finished(ap, AUTH_USER);
+ break;
+
+ case KRB4_ENCPWD_CHALLENGE:
+ /*
+ * Take the received random challenge text and save
+ * for future authentication.
+ */
+ bcopy((void *)data, (void *)challenge, sizeof(Block));
+ break;
+
+
+ case KRB4_ENCPWD_ACK:
+ /*
+ * Receive ack, if mutual then send random challenge
+ */
+
+ /*
+ * If we are doing mutual authentication, get set up to send
+ * the challange, and verify it when the response comes back.
+ */
+
+ if ((ap->way & AUTH_HOW_MASK) == AUTH_HOW_MUTUAL) {
+ register int i;
+
+ time(&now);
+ sprintf(challenge, "%x", now);
+ Data(ap, KRB4_ENCPWD_CHALLENGE, (void *)challenge, strlen(challenge));
+ }
+ break;
+
+ default:
+ Data(ap, KRB4_ENCPWD_REJECT, 0, 0);
+ break;
+ }
+}
+
+
+ void
+krb4encpwd_reply(ap, data, cnt)
+ Authenticator *ap;
+ unsigned char *data;
+ int cnt;
+{
+ Session_Key skey;
+ KTEXT_ST krb_token;
+ Block enckey;
+ CREDENTIALS cred;
+ int r;
+ char randchal[REALM_SZ], instance[ANAME_SZ], *cp;
+ char hostname[80], *realm;
+
+ if (cnt-- < 1)
+ return;
+ switch (*data++) {
+ case KRB4_ENCPWD_REJECT:
+ if (cnt > 0) {
+ printf("[ KRB4_ENCPWD refuses authentication because %.*s ]\r\n",
+ cnt, data);
+ } else
+ printf("[ KRB4_ENCPWD refuses authentication ]\r\n");
+ auth_send_retry();
+ return;
+ case KRB4_ENCPWD_ACCEPT:
+ printf("[ KRB4_ENCPWD accepts you ]\n");
+ auth_finished(ap, AUTH_USER);
+ return;
+ case KRB4_ENCPWD_CHALLENGE:
+ /*
+ * Verify that the response to the challenge is correct.
+ */
+
+ gethostname(hostname, sizeof(hostname));
+ realm = krb_realmofhost(hostname);
+ bcopy((void *)data, (void *)challenge, cnt);
+ bzero(user_passwd, sizeof(user_passwd));
+ local_des_read_pw_string(user_passwd, sizeof(user_passwd)-1, "Password: ", 0);
+ UserPassword = user_passwd;
+ Challenge = challenge;
+ strcpy(instance, RemoteHostName);
+ if ((cp = index(instance, '.')) != 0) *cp = '\0';
+
+ if (r = krb_mk_encpwd_req(&krb_token, KRB_SERVICE_NAME, instance, realm, Challenge, UserNameRequested, user_passwd)) {
+ krb_token.length = 0;
+ }
+
+ if (!Data(ap, KRB4_ENCPWD_AUTH, (void *)krb_token.dat, krb_token.length)) {
+ return;
+ }
+
+ break;
+
+ default:
+ return;
+ }
+}
+
+ int
+krb4encpwd_status(ap, name, level)
+ Authenticator *ap;
+ char *name;
+ int level;
+{
+
+ if (level < AUTH_USER)
+ return(level);
+
+ if (UserNameRequested && passwdok(UserNameRequested, UserPassword)) {
+ strcpy(name, UserNameRequested);
+ return(AUTH_VALID);
+ } else {
+ return(AUTH_USER);
+ }
+}
+
+#define BUMP(buf, len) while (*(buf)) {++(buf), --(len);}
+#define ADDC(buf, len, c) if ((len) > 0) {*(buf)++ = (c); --(len);}
+
+ void
+krb4encpwd_printsub(data, cnt, buf, buflen)
+ unsigned char *data, *buf;
+ int cnt, buflen;
+{
+ char lbuf[32];
+ register int i;
+
+ buf[buflen-1] = '\0'; /* make sure its NULL terminated */
+ buflen -= 1;
+
+ switch(data[3]) {
+ case KRB4_ENCPWD_REJECT: /* Rejected (reason might follow) */
+ strncpy((char *)buf, " REJECT ", buflen);
+ goto common;
+
+ case KRB4_ENCPWD_ACCEPT: /* Accepted (name might follow) */
+ strncpy((char *)buf, " ACCEPT ", buflen);
+ common:
+ BUMP(buf, buflen);
+ if (cnt <= 4)
+ break;
+ ADDC(buf, buflen, '"');
+ for (i = 4; i < cnt; i++)
+ ADDC(buf, buflen, data[i]);
+ ADDC(buf, buflen, '"');
+ ADDC(buf, buflen, '\0');
+ break;
+
+ case KRB4_ENCPWD_AUTH: /* Authentication data follows */
+ strncpy((char *)buf, " AUTH", buflen);
+ goto common2;
+
+ case KRB4_ENCPWD_CHALLENGE:
+ strncpy((char *)buf, " CHALLENGE", buflen);
+ goto common2;
+
+ case KRB4_ENCPWD_ACK:
+ strncpy((char *)buf, " ACK", buflen);
+ goto common2;
+
+ default:
+ sprintf(lbuf, " %d (unknown)", data[3]);
+ strncpy((char *)buf, lbuf, buflen);
+ common2:
+ BUMP(buf, buflen);
+ for (i = 4; i < cnt; i++) {
+ sprintf(lbuf, " %d", data[i]);
+ strncpy((char *)buf, lbuf, buflen);
+ BUMP(buf, buflen);
+ }
+ break;
+ }
+}
+
+int passwdok(name, passwd)
+char *name, *passwd;
+{
+ char *crypt();
+ char *salt, *p;
+ struct passwd *pwd;
+ int passwdok_status = 0;
+
+ if (pwd = getpwnam(name))
+ salt = pwd->pw_passwd;
+ else salt = "xx";
+
+ p = crypt(passwd, salt);
+
+ if (pwd && !strcmp(p, pwd->pw_passwd)) {
+ passwdok_status = 1;
+ } else passwdok_status = 0;
+ return(passwdok_status);
+}
+
+#endif
+
+#ifdef notdef
+
+prkey(msg, key)
+ char *msg;
+ unsigned char *key;
+{
+ register int i;
+ printf("%s:", msg);
+ for (i = 0; i < 8; i++)
+ printf(" %3d", key[i]);
+ printf("\r\n");
+}
+#endif
--- /dev/null
+/*-
+ * Copyright (c) 1990 The Regents of the University of California.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Chris Torek.
+ *
+ * Redistribution and use in source and binary forms are permitted
+ * provided that: (1) source distributions retain this entire copyright
+ * notice and comment, and (2) distributions including binaries display
+ * the following acknowledgement: ``This product includes software
+ * developed by the University of California, Berkeley and its contributors''
+ * in the documentation or other materials provided with the distribution
+ * and in all advertising materials mentioning features or use of this
+ * software. Neither the name of the University nor the names of its
+ * contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)memcmp.c 5.5 (Berkeley) 5/15/90";
+static char sccsid[] = "@(#)memcpy.c 5.6 (Berkeley) 5/15/90";
+static char sccsid[] = "@(#)memmove.c 5.2 (Berkeley) 5/15/90";
+static char sccsid[] = "@(#)memset.c 5.5 (Berkeley) 5/15/90";
+#endif /* LIBC_SCCS and not lint */
+
+#ifndef __STDC__
+#define const
+#endif
+typedef int size_t;
+
+/*
+ * Compare memory regions.
+ */
+int
+memcmp(s1, s2, n)
+ const void *s1, *s2;
+ size_t n;
+{
+ if (n != 0) {
+ register const unsigned char *p1 = (unsigned char *)s1,
+ *p2 = (unsigned char *)s2;
+
+ do {
+ if (*p1++ != *p2++)
+ return(*--p1 - *--p2);
+ } while (--n != 0);
+ }
+ return(0);
+}
+
+/*
+ * Copy a block of memory.
+ */
+void *
+memcpy(dst, src, n)
+ void *dst;
+ const void *src;
+ size_t n;
+{
+ bcopy((const char *)src, (char *)dst, n);
+ return(dst);
+}
+
+/*
+ * Copy a block of memory, handling overlap.
+ */
+void *
+memmove(dst, src, length)
+ void *dst;
+ const void *src;
+ register size_t length;
+{
+ bcopy((const char *)src, (char *)dst, length);
+ return(dst);
+}
+
+void *
+memset(dst, c, n)
+ void *dst;
+ register int c;
+ register size_t n;
+{
+
+ if (n != 0) {
+ register char *d = (char *)dst;
+
+ do
+ *d++ = c;
+ while (--n != 0);
+ }
+ return(dst);
+}
--- /dev/null
+/*-
+ * Copyright (c) 1991 The Regents of the University of California.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * @(#)misc-proto.h 5.1 (Berkeley) 2/28/91
+ */
+
+/*
+ * Copyright (C) 1990 by the Massachusetts Institute of Technology
+ *
+ * Export of this software from the United States of America is assumed
+ * to require a specific license from the United States Government.
+ * It is the responsibility of any person or organization contemplating
+ * export to obtain such a license before exporting.
+ *
+ * WITHIN THAT CONSTRAINT, permission to use, copy, modify, and
+ * distribute this software and its documentation for any purpose and
+ * without fee is hereby granted, provided that the above copyright
+ * notice appear in all copies and that both that copyright notice and
+ * this permission notice appear in supporting documentation, and that
+ * the name of M.I.T. not be used in advertising or publicity pertaining
+ * to distribution of the software without specific, written prior
+ * permission. M.I.T. makes no representations about the suitability of
+ * this software for any purpose. It is provided "as is" without express
+ * or implied warranty.
+ */
+
+#ifndef __MISC_PROTO__
+#define __MISC_PROTO__
+
+#if !defined(P)
+#ifdef __STDC__
+#define P(x) x
+#else
+#define P(x) ()
+#endif
+#endif
+
+void auth_encrypt_init P((char *, char *, char *, int));
+void auth_encrypt_connect P((int));
+void printd P((unsigned char *, int));
+
+/*
+ * These functions are imported from the application
+ */
+int net_write P((unsigned char *, int));
+void net_encrypt P((void));
+int telnet_spin P((void));
+char *telnet_getenv P((char *));
+char *telnet_gets P((char *, char *, int, int));
+#endif
--- /dev/null
+/*-
+ * Copyright (c) 1991 The Regents of the University of California.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef lint
+static char sccsid[] = "@(#)misc.c 5.3 (Berkeley) 1/20/93";
+#endif /* not lint */
+
+#include "misc.h"
+
+char *RemoteHostName;
+char *LocalHostName;
+char *UserNameRequested = 0;
+int ConnectedCount = 0;
+
+ void
+auth_encrypt_init(local, remote, name, server)
+ char *local;
+ char *remote;
+ char *name;
+ int server;
+{
+ RemoteHostName = remote;
+ LocalHostName = local;
+#if defined(AUTHENTICATION)
+ auth_init(name, server);
+#endif
+#if defined(ENCRYPTION)
+ encrypt_init(name, server);
+#endif
+ if (UserNameRequested) {
+ free(UserNameRequested);
+ UserNameRequested = 0;
+ }
+}
+
+ void
+auth_encrypt_user(name)
+ char *name;
+{
+ extern char *strdup();
+
+ if (UserNameRequested)
+ free(UserNameRequested);
+ UserNameRequested = name ? strdup(name) : 0;
+}
+
+ void
+auth_encrypt_connect(cnt)
+ int cnt;
+{
+}
+
+ void
+printd(data, cnt)
+ unsigned char *data;
+ int cnt;
+{
+ if (cnt > 16)
+ cnt = 16;
+ while (cnt-- > 0) {
+ printf(" %02x", *data);
+ ++data;
+ }
+}
--- /dev/null
+/*-
+ * Copyright (c) 1991 The Regents of the University of California.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * @(#)misc.h 5.1 (Berkeley) 2/28/91
+ */
+
+extern char *UserNameRequested;
+extern char *LocalHostName;
+extern char *RemoteHostName;
+extern int ConnectedCount;
+extern int ReservedPort;
+
+#include "misc-proto.h"
--- /dev/null
+/*-
+ * Copyright (c) 1992 The Regents of the University of California.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef lint
+static char sccsid[] = "@(#)read_password.c 5.1 (Berkeley) 1/20/93";
+#endif /* not lint */
+
+/*
+ * $Source$
+ * $Author$
+ *
+ * Copyright 1985, 1986, 1987, 1988 by the Massachusetts Institute
+ * of Technology.
+ *
+ * For copying and distribution information, please see the file
+ * <mit-copyright.h>.
+ *
+ * This routine prints the supplied string to standard
+ * output as a prompt, and reads a password string without
+ * echoing.
+ */
+
+#include <stdio.h>
+#include <strings.h>
+#include <sys/ioctl.h>
+#include <signal.h>
+#include <setjmp.h>
+
+static jmp_buf env;
+
+/*** Routines ****************************************************** */
+/*
+ * This version just returns the string, doesn't map to key.
+ *
+ * Returns 0 on success, non-zero on failure.
+ */
+
+int
+local_des_read_pw_string(s,max,prompt,verify)
+ char *s;
+ int max;
+ char *prompt;
+ int verify;
+{
+ int ok = 0;
+ char *ptr;
+
+ jmp_buf old_env;
+ struct sgttyb tty_state;
+ char key_string[BUFSIZ];
+
+ if (max > BUFSIZ) {
+ return -1;
+ }
+
+ /* XXX assume jmp_buf is typedef'ed to an array */
+ bcopy((char *)old_env, (char *)env, sizeof(env));
+ if (setjmp(env))
+ goto lose;
+
+ /* save terminal state*/
+ if (ioctl(0,TIOCGETP,(char *)&tty_state) == -1)
+ return -1;
+/*
+ push_signals();
+*/
+ /* Turn off echo */
+ tty_state.sg_flags &= ~ECHO;
+ if (ioctl(0,TIOCSETP,(char *)&tty_state) == -1)
+ return -1;
+ while (!ok) {
+ (void) printf(prompt);
+ (void) fflush(stdout);
+ while (!fgets(s, max, stdin));
+
+ if ((ptr = index(s, '\n')))
+ *ptr = '\0';
+ if (verify) {
+ printf("\nVerifying, please re-enter %s",prompt);
+ (void) fflush(stdout);
+ if (!fgets(key_string, sizeof(key_string), stdin)) {
+ clearerr(stdin);
+ continue;
+ }
+ if ((ptr = index(key_string, '\n')))
+ *ptr = '\0';
+ if (strcmp(s,key_string)) {
+ printf("\n\07\07Mismatch - try again\n");
+ (void) fflush(stdout);
+ continue;
+ }
+ }
+ ok = 1;
+ }
+
+lose:
+ if (!ok)
+ bzero(s, max);
+ printf("\n");
+ /* turn echo back on */
+ tty_state.sg_flags |= ECHO;
+ if (ioctl(0,TIOCSETP,(char *)&tty_state))
+ ok = 0;
+/*
+ pop_signals();
+*/
+ bcopy((char *)env, (char *)old_env, sizeof(env));
+ if (verify)
+ bzero(key_string, sizeof (key_string));
+ s[max-1] = 0; /* force termination */
+ return !ok; /* return nonzero if not okay */
+}
--- /dev/null
+/*-
+ * Copyright (c) 1992 The Regents of the University of California.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef lint
+static char sccsid[] = "@(#)rsaencpwd.c 5.1 (Berkeley) 1/20/93";
+#endif /* not lint */
+
+
+#ifdef RSA_ENCPWD
+/*
+ * COPYRIGHT (C) 1990 DIGITAL EQUIPMENT CORPORATION
+ * ALL RIGHTS RESERVED
+ *
+ * "Digital Equipment Corporation authorizes the reproduction,
+ * distribution and modification of this software subject to the following
+ * restrictions:
+ *
+ * 1. Any partial or whole copy of this software, or any modification
+ * thereof, must include this copyright notice in its entirety.
+ *
+ * 2. This software is supplied "as is" with no warranty of any kind,
+ * expressed or implied, for any purpose, including any warranty of fitness
+ * or merchantibility. DIGITAL assumes no responsibility for the use or
+ * reliability of this software, nor promises to provide any form of
+ * support for it on any basis.
+ *
+ * 3. Distribution of this software is authorized only if no profit or
+ * remuneration of any kind is received in exchange for such distribution.
+ *
+ * 4. This software produces public key authentication certificates
+ * bearing an expiration date established by DIGITAL and RSA Data
+ * Security, Inc. It may cease to generate certificates after the expiration
+ * date. Any modification of this software that changes or defeats
+ * the expiration date or its effect is unauthorized.
+ *
+ * 5. Software that will renew or extend the expiration date of
+ * authentication certificates produced by this software may be obtained
+ * from RSA Data Security, Inc., 10 Twin Dolphin Drive, Redwood City, CA
+ * 94065, (415)595-8782, or from DIGITAL"
+ *
+ */
+
+#include <sys/types.h>
+#include <arpa/telnet.h>
+#include <pwd.h>
+#include <stdio.h>
+
+#ifdef __STDC__
+#include <stdlib.h>
+#endif
+#ifdef NO_STRING_H
+#include <strings.h>
+#else
+#include <string.h>
+#endif
+
+#include "encrypt.h"
+#include "auth.h"
+#include "misc.h"
+#include "cdc.h"
+
+extern auth_debug_mode;
+
+static unsigned char str_data[1024] = { IAC, SB, TELOPT_AUTHENTICATION, 0,
+ AUTHTYPE_RSA_ENCPWD, };
+static unsigned char str_name[1024] = { IAC, SB, TELOPT_AUTHENTICATION,
+ TELQUAL_NAME, };
+
+#define RSA_ENCPWD_AUTH 0 /* Authentication data follows */
+#define RSA_ENCPWD_REJECT 1 /* Rejected (reason might follow) */
+#define RSA_ENCPWD_ACCEPT 2 /* Accepted */
+#define RSA_ENCPWD_CHALLENGEKEY 3 /* Challenge and public key */
+
+#define NAME_SZ 40
+#define CHAL_SZ 20
+#define PWD_SZ 40
+
+static KTEXT_ST auth;
+static char name[NAME_SZ];
+static char user_passwd[PWD_SZ];
+static char key_file[2*NAME_SZ];
+static char lhostname[NAME_SZ];
+static char challenge[CHAL_SZ];
+static int challenge_len;
+
+ static int
+Data(ap, type, d, c)
+ Authenticator *ap;
+ int type;
+ void *d;
+ int c;
+{
+ unsigned char *p = str_data + 4;
+ unsigned char *cd = (unsigned char *)d;
+
+ if (c == -1)
+ c = strlen((char *)cd);
+
+ if (0) {
+ printf("%s:%d: [%d] (%d)",
+ str_data[3] == TELQUAL_IS ? ">>>IS" : ">>>REPLY",
+ str_data[3],
+ type, c);
+ printd(d, c);
+ printf("\r\n");
+ }
+ *p++ = ap->type;
+ *p++ = ap->way;
+ if (type != NULL) *p++ = type;
+ while (c-- > 0) {
+ if ((*p++ = *cd++) == IAC)
+ *p++ = IAC;
+ }
+ *p++ = IAC;
+ *p++ = SE;
+ if (str_data[3] == TELQUAL_IS)
+ printsub('>', &str_data[2], p - (&str_data[2]));
+ return(net_write(str_data, p - str_data));
+}
+
+ int
+rsaencpwd_init(ap, server)
+ Authenticator *ap;
+ int server;
+{
+ char *cp;
+ FILE *fp;
+
+ if (server) {
+ str_data[3] = TELQUAL_REPLY;
+ bzero(key_file, sizeof(key_file));
+ gethostname(lhostname, sizeof(lhostname));
+ if ((cp = index(lhostname, '.')) != 0) *cp = '\0';
+ strcpy(key_file, "/etc/.");
+ strcat(key_file, lhostname);
+ strcat(key_file, "_privkey");
+ if ((fp=fopen(key_file, "r"))==NULL) return(0);
+ fclose(fp);
+ } else {
+ str_data[3] = TELQUAL_IS;
+ }
+ return(1);
+}
+
+ int
+rsaencpwd_send(ap)
+ Authenticator *ap;
+{
+
+ printf("[ Trying RSAENCPWD ... ]\n");
+ if (!UserNameRequested) {
+ return(0);
+ }
+ if (!auth_sendname(UserNameRequested, strlen(UserNameRequested))) {
+ return(0);
+ }
+ if (!Data(ap, NULL, (void *)NULL, 0)) {
+ return(0);
+ }
+
+
+ return(1);
+}
+
+ void
+rsaencpwd_is(ap, data, cnt)
+ Authenticator *ap;
+ unsigned char *data;
+ int cnt;
+{
+ Session_Key skey;
+ Block datablock;
+ char r_passwd[PWD_SZ], r_user[NAME_SZ];
+ char *cp, key[160];
+ char chalkey[160], *ptr;
+ FILE *fp;
+ int r, i, j, chalkey_len, len;
+ time_t now;
+
+ cnt--;
+ switch (*data++) {
+ case RSA_ENCPWD_AUTH:
+ bcopy((void *)data, (void *)auth.dat, auth.length = cnt);
+
+ if ((fp=fopen(key_file, "r"))==NULL) {
+ Data(ap, RSA_ENCPWD_REJECT, (void *)"Auth failed", -1);
+ auth_finished(ap, AUTH_REJECT);
+ return;
+ }
+ /*
+ * get privkey
+ */
+ fscanf(fp, "%x;", &len);
+ for (i=0;i<len;i++) {
+ j = getc(fp); key[i]=j;
+ }
+ fclose(fp);
+
+ r = accept_rsa_encpwd(&auth, key, challenge,
+ challenge_len, r_passwd);
+ if (r < 0) {
+ Data(ap, RSA_ENCPWD_REJECT, (void *)"Auth failed", -1);
+ auth_finished(ap, AUTH_REJECT);
+ return;
+ }
+ auth_encrypt_userpwd(r_passwd);
+ if (rsaencpwd_passwdok(UserNameRequested, UserPassword) == 0) {
+ /*
+ * illegal username and password
+ */
+ Data(ap, RSA_ENCPWD_REJECT, (void *)"Illegal password", -1);
+ auth_finished(ap, AUTH_REJECT);
+ return;
+ }
+
+ Data(ap, RSA_ENCPWD_ACCEPT, (void *)0, 0);
+ auth_finished(ap, AUTH_USER);
+ break;
+
+
+ case IAC:
+
+ /*
+ * If we are doing mutual authentication, get set up to send
+ * the challange, and verify it when the response comes back.
+ */
+ if ((ap->way & AUTH_HOW_MASK) == AUTH_HOW_ONE_WAY) {
+ register int i;
+
+
+ time(&now);
+ if ((now % 2) == 0) {
+ sprintf(challenge, "%x", now);
+ challenge_len = strlen(challenge);
+ } else {
+ strcpy(challenge, "randchal");
+ challenge_len = 8;
+ }
+
+ if ((fp=fopen(key_file, "r"))==NULL) {
+ Data(ap, RSA_ENCPWD_REJECT, (void *)"Auth failed", -1);
+ auth_finished(ap, AUTH_REJECT);
+ return;
+ }
+ /*
+ * skip privkey
+ */
+ fscanf(fp, "%x;", &len);
+ for (i=0;i<len;i++) {
+ j = getc(fp);
+ }
+ /*
+ * get pubkey
+ */
+ fscanf(fp, "%x;", &len);
+ for (i=0;i<len;i++) {
+ j = getc(fp); key[i]=j;
+ }
+ fclose(fp);
+ chalkey[0] = 0x30;
+ ptr = (char *) &chalkey[1];
+ chalkey_len = 1+NumEncodeLengthOctets(i)+i+1+NumEncodeLengthOctets(challenge_len)+challenge_len;
+ EncodeLength(ptr, chalkey_len);
+ ptr +=NumEncodeLengthOctets(chalkey_len);
+ *ptr++ = 0x04; /* OCTET STRING */
+ *ptr++ = challenge_len;
+ bcopy(challenge, ptr, challenge_len);
+ ptr += challenge_len;
+ *ptr++ = 0x04; /* OCTET STRING */
+ EncodeLength(ptr, i);
+ ptr += NumEncodeLengthOctets(i);
+ bcopy(key, ptr, i);
+ chalkey_len = 1+NumEncodeLengthOctets(chalkey_len)+chalkey_len;
+ Data(ap, RSA_ENCPWD_CHALLENGEKEY, (void *)chalkey, chalkey_len);
+ }
+ break;
+
+ default:
+ Data(ap, RSA_ENCPWD_REJECT, 0, 0);
+ break;
+ }
+}
+
+
+ void
+rsaencpwd_reply(ap, data, cnt)
+ Authenticator *ap;
+ unsigned char *data;
+ int cnt;
+{
+ Session_Key skey;
+ KTEXT_ST token;
+ Block enckey;
+ int r, pubkey_len;
+ char randchal[CHAL_SZ], *cp;
+ char chalkey[160], pubkey[128], *ptr;
+
+ if (cnt-- < 1)
+ return;
+ switch (*data++) {
+ case RSA_ENCPWD_REJECT:
+ if (cnt > 0) {
+ printf("[ RSA_ENCPWD refuses authentication because %.*s ]\r\n",
+ cnt, data);
+ } else
+ printf("[ RSA_ENCPWD refuses authentication ]\r\n");
+ auth_send_retry();
+ return;
+ case RSA_ENCPWD_ACCEPT:
+ printf("[ RSA_ENCPWD accepts you ]\n");
+ auth_finished(ap, AUTH_USER);
+ return;
+ case RSA_ENCPWD_CHALLENGEKEY:
+ /*
+ * Verify that the response to the challenge is correct.
+ */
+
+ bcopy((void *)data, (void *)chalkey, cnt);
+ ptr = (char *) &chalkey[0];
+ ptr += DecodeHeaderLength(chalkey);
+ if (*ptr != 0x04) {
+ return;
+ }
+ *ptr++;
+ challenge_len = DecodeValueLength(ptr);
+ ptr += NumEncodeLengthOctets(challenge_len);
+ bcopy(ptr, challenge, challenge_len);
+ ptr += challenge_len;
+ if (*ptr != 0x04) {
+ return;
+ }
+ *ptr++;
+ pubkey_len = DecodeValueLength(ptr);
+ ptr += NumEncodeLengthOctets(pubkey_len);
+ bcopy(ptr, pubkey, pubkey_len);
+ bzero(user_passwd, sizeof(user_passwd));
+ local_des_read_pw_string(user_passwd, sizeof(user_passwd)-1, "Password: ", 0);
+ UserPassword = user_passwd;
+ Challenge = challenge;
+ r = init_rsa_encpwd(&token, user_passwd, challenge, challenge_len, pubkey);
+ if (r < 0) {
+ token.length = 1;
+ }
+
+ if (!Data(ap, RSA_ENCPWD_AUTH, (void *)token.dat, token.length)) {
+ return;
+ }
+
+ break;
+
+ default:
+ return;
+ }
+}
+
+ int
+rsaencpwd_status(ap, name, level)
+ Authenticator *ap;
+ char *name;
+ int level;
+{
+
+ if (level < AUTH_USER)
+ return(level);
+
+ if (UserNameRequested && rsaencpwd_passwdok(UserNameRequested, UserPassword)) {
+ strcpy(name, UserNameRequested);
+ return(AUTH_VALID);
+ } else {
+ return(AUTH_USER);
+ }
+}
+
+#define BUMP(buf, len) while (*(buf)) {++(buf), --(len);}
+#define ADDC(buf, len, c) if ((len) > 0) {*(buf)++ = (c); --(len);}
+
+ void
+rsaencpwd_printsub(data, cnt, buf, buflen)
+ unsigned char *data, *buf;
+ int cnt, buflen;
+{
+ char lbuf[32];
+ register int i;
+
+ buf[buflen-1] = '\0'; /* make sure its NULL terminated */
+ buflen -= 1;
+
+ switch(data[3]) {
+ case RSA_ENCPWD_REJECT: /* Rejected (reason might follow) */
+ strncpy((char *)buf, " REJECT ", buflen);
+ goto common;
+
+ case RSA_ENCPWD_ACCEPT: /* Accepted (name might follow) */
+ strncpy((char *)buf, " ACCEPT ", buflen);
+ common:
+ BUMP(buf, buflen);
+ if (cnt <= 4)
+ break;
+ ADDC(buf, buflen, '"');
+ for (i = 4; i < cnt; i++)
+ ADDC(buf, buflen, data[i]);
+ ADDC(buf, buflen, '"');
+ ADDC(buf, buflen, '\0');
+ break;
+
+ case RSA_ENCPWD_AUTH: /* Authentication data follows */
+ strncpy((char *)buf, " AUTH", buflen);
+ goto common2;
+
+ case RSA_ENCPWD_CHALLENGEKEY:
+ strncpy((char *)buf, " CHALLENGEKEY", buflen);
+ goto common2;
+
+ default:
+ sprintf(lbuf, " %d (unknown)", data[3]);
+ strncpy((char *)buf, lbuf, buflen);
+ common2:
+ BUMP(buf, buflen);
+ for (i = 4; i < cnt; i++) {
+ sprintf(lbuf, " %d", data[i]);
+ strncpy((char *)buf, lbuf, buflen);
+ BUMP(buf, buflen);
+ }
+ break;
+ }
+}
+
+int rsaencpwd_passwdok(name, passwd)
+char *name, *passwd;
+{
+ char *crypt();
+ char *salt, *p;
+ struct passwd *pwd;
+ int passwdok_status = 0;
+
+ if (pwd = getpwnam(name))
+ salt = pwd->pw_passwd;
+ else salt = "xx";
+
+ p = crypt(passwd, salt);
+
+ if (pwd && !strcmp(p, pwd->pw_passwd)) {
+ passwdok_status = 1;
+ } else passwdok_status = 0;
+ return(passwdok_status);
+}
+
+#endif
+
+#ifdef notdef
+
+prkey(msg, key)
+ char *msg;
+ unsigned char *key;
+{
+ register int i;
+ printf("%s:", msg);
+ for (i = 0; i < 8; i++)
+ printf(" %3d", key[i]);
+ printf("\r\n");
+}
+#endif
--- /dev/null
+/*
+ * Copyright (c) 1987 Regents of the University of California.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms are permitted
+ * provided that the above copyright notice and this paragraph are
+ * duplicated in all such forms and that any documentation,
+ * advertising materials, and other materials related to such
+ * distribution and use acknowledge that the software was developed
+ * by the University of California, Berkeley. The name of the
+ * University may not be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
+ * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid1[] = "@(#)setenv.c 5.3 (Berkeley) 5/16/90";
+static char sccsid2[] = "@(#)getenv.c 5.6 (Berkeley) 5/16/90";
+#endif /* LIBC_SCCS and not lint */
+
+/*
+ * setenv --
+ * Set the value of the environmental variable "name" to be
+ * "value". If rewrite is set, replace any current value.
+ */
+setenv(name, value, rewrite)
+ register char *name, *value;
+ int rewrite;
+{
+ extern char **environ, *malloc();
+ static int alloced; /* if allocated space before */
+ register char *C;
+ int l_value, offset;
+ static char *_findenv();
+
+ if (*value == '=') /* no `=' in value */
+ ++value;
+ l_value = strlen(value);
+ if ((C = _findenv(name, &offset))) { /* find if already exists */
+ if (!rewrite)
+ return(0);
+ if (strlen(C) >= l_value) { /* old larger; copy over */
+ while (*C++ = *value++);
+ return(0);
+ }
+ }
+ else { /* create new slot */
+ register int cnt;
+ register char **P;
+
+ for (P = environ, cnt = 0; *P; ++P, ++cnt);
+ if (alloced) { /* just increase size */
+ environ = (char **)realloc((char *)environ,
+ (sizeof(char *) * (cnt + 2)));
+ if (!environ)
+ return(-1);
+ }
+ else { /* get new space */
+ alloced = 1; /* copy old entries into it */
+ P = (char **)malloc((sizeof(char *) *
+ (cnt + 2)));
+ if (!P)
+ return(-1);
+ bcopy(environ, P, cnt * sizeof(char *));
+ environ = P;
+ }
+ environ[cnt + 1] = 0;
+ offset = cnt;
+ }
+ for (C = name; *C && *C != '='; ++C); /* no `=' in name */
+ if (!(environ[offset] = /* name + `=' + value */
+ malloc(((int)(C - name) + l_value + 2))))
+ return(-1);
+ for (C = environ[offset]; (*C = *name++) && *C != '='; ++C);
+ for (*C++ = '='; *C++ = *value++;);
+ return(0);
+}
+
+/*
+ * unsetenv(name) --
+ * Delete environmental variable "name".
+ */
+void
+unsetenv(name)
+ char *name;
+{
+ extern char **environ;
+ register char **P;
+ int offset;
+ static char *_findenv();
+
+ while (_findenv(name, &offset)) /* if set multiple times */
+ for (P = &environ[offset];; ++P)
+ if (!(*P = *(P + 1)))
+ break;
+}
+
+/*
+ * getenv --
+ * Returns ptr to value associated with name, if any, else NULL.
+ */
+char *
+getenv(name)
+ char *name;
+{
+ int offset;
+ static char *_findenv();
+
+ return(_findenv(name, &offset));
+}
+
+/*
+ * _findenv --
+ * Returns pointer to value associated with name, if any, else NULL.
+ * Sets offset to be the offset of the name/value combination in the
+ * environmental array, for use by setenv(3) and unsetenv(3).
+ * Explicitly removes '=' in argument name.
+ */
+static char *
+_findenv(name, offset)
+ register char *name;
+ int *offset;
+{
+ extern char **environ;
+ register int len;
+ register char **P, *C;
+
+ for (C = name, len = 0; *C && *C != '='; ++C, ++len);
+ for (P = environ; *P; ++P)
+ if (!strncmp(*P, name, len))
+ if (*(C = *P + len) == '=') {
+ *offset = P - environ;
+ return(++C);
+ }
+ return(0);
+}
--- /dev/null
+/*-
+ * Copyright (c) 1991 The Regents of the University of California.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms are permitted provided
+ * that: (1) source distributions retain this entire copyright notice and
+ * comment, and (2) distributions including binaries display the following
+ * acknowledgement: ``This product includes software developed by the
+ * University of California, Berkeley and its contributors'' in the
+ * documentation or other materials provided with the distribution and in
+ * all advertising materials mentioning features or use of this software.
+ * Neither the name of the University nor the names of its contributors may
+ * be used to endorse or promote products derived from this software without
+ * specific prior written permission.
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+ */
+
+#ifndef lint
+static char sccsid[] = "@(#)setsid.c 5.1 (Berkeley) 2/28/91";
+#endif /* not lint */
+
+/*
+ * Emulate the functionality of setsid(), called when forking
+ * and execing the new process.
+ */
+
+extern char *line;
+setsid()
+{
+#ifndef convex
+ if (setpgrp(0, 0) < 0)
+ return(-1);
+#endif
+ return(0);
+}
--- /dev/null
+/*-
+ * Copyright (c) 1992 The Regents of the University of California.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef lint
+static char sccsid[] = "@(#)spx.c 5.1 (Berkeley) 1/20/93";
+#endif /* not lint */
+
+#ifdef SPX
+/*
+ * COPYRIGHT (C) 1990 DIGITAL EQUIPMENT CORPORATION
+ * ALL RIGHTS RESERVED
+ *
+ * "Digital Equipment Corporation authorizes the reproduction,
+ * distribution and modification of this software subject to the following
+ * restrictions:
+ *
+ * 1. Any partial or whole copy of this software, or any modification
+ * thereof, must include this copyright notice in its entirety.
+ *
+ * 2. This software is supplied "as is" with no warranty of any kind,
+ * expressed or implied, for any purpose, including any warranty of fitness
+ * or merchantibility. DIGITAL assumes no responsibility for the use or
+ * reliability of this software, nor promises to provide any form of
+ * support for it on any basis.
+ *
+ * 3. Distribution of this software is authorized only if no profit or
+ * remuneration of any kind is received in exchange for such distribution.
+ *
+ * 4. This software produces public key authentication certificates
+ * bearing an expiration date established by DIGITAL and RSA Data
+ * Security, Inc. It may cease to generate certificates after the expiration
+ * date. Any modification of this software that changes or defeats
+ * the expiration date or its effect is unauthorized.
+ *
+ * 5. Software that will renew or extend the expiration date of
+ * authentication certificates produced by this software may be obtained
+ * from RSA Data Security, Inc., 10 Twin Dolphin Drive, Redwood City, CA
+ * 94065, (415)595-8782, or from DIGITAL"
+ *
+ */
+
+#include <sys/types.h>
+#include <arpa/telnet.h>
+#include <stdio.h>
+#include "gssapi_defs.h"
+#ifdef __STDC__
+#include <stdlib.h>
+#endif
+#ifdef NO_STRING_H
+#include <strings.h>
+#else
+#include <string.h>
+#endif
+
+#include <pwd.h>
+#include "encrypt.h"
+#include "auth.h"
+#include "misc.h"
+
+extern auth_debug_mode;
+
+static unsigned char str_data[1024] = { IAC, SB, TELOPT_AUTHENTICATION, 0,
+ AUTHTYPE_SPX, };
+static unsigned char str_name[1024] = { IAC, SB, TELOPT_AUTHENTICATION,
+ TELQUAL_NAME, };
+
+#define SPX_AUTH 0 /* Authentication data follows */
+#define SPX_REJECT 1 /* Rejected (reason might follow) */
+#define SPX_ACCEPT 2 /* Accepted */
+
+#if defined(ENCRYPTION)
+static Block session_key = { 0 };
+#endif
+static Schedule sched;
+static Block challange = { 0 };
+
+
+/*******************************************************************/
+
+gss_OID_set actual_mechs;
+gss_OID actual_mech_type, output_name_type;
+int major_status, status, msg_ctx = 0, new_status;
+int req_flags = 0, ret_flags, lifetime_rec;
+gss_cred_id_t gss_cred_handle;
+gss_ctx_id_t actual_ctxhandle, context_handle;
+gss_buffer_desc output_token, input_token, input_name_buffer;
+gss_buffer_desc status_string;
+gss_name_t desired_targname, src_name;
+gss_channel_bindings input_chan_bindings;
+char lhostname[GSS_C_MAX_PRINTABLE_NAME];
+char targ_printable[GSS_C_MAX_PRINTABLE_NAME];
+int to_addr=0, from_addr=0;
+char *address;
+gss_buffer_desc fullname_buffer;
+gss_OID fullname_type;
+gss_cred_id_t gss_delegated_cred_handle;
+
+/*******************************************************************/
+
+
+
+ static int
+Data(ap, type, d, c)
+ Authenticator *ap;
+ int type;
+ void *d;
+ int c;
+{
+ unsigned char *p = str_data + 4;
+ unsigned char *cd = (unsigned char *)d;
+
+ if (c == -1)
+ c = strlen((char *)cd);
+
+ if (0) {
+ printf("%s:%d: [%d] (%d)",
+ str_data[3] == TELQUAL_IS ? ">>>IS" : ">>>REPLY",
+ str_data[3],
+ type, c);
+ printd(d, c);
+ printf("\r\n");
+ }
+ *p++ = ap->type;
+ *p++ = ap->way;
+ *p++ = type;
+ while (c-- > 0) {
+ if ((*p++ = *cd++) == IAC)
+ *p++ = IAC;
+ }
+ *p++ = IAC;
+ *p++ = SE;
+ if (str_data[3] == TELQUAL_IS)
+ printsub('>', &str_data[2], p - (&str_data[2]));
+ return(net_write(str_data, p - str_data));
+}
+
+ int
+spx_init(ap, server)
+ Authenticator *ap;
+ int server;
+{
+ gss_cred_id_t tmp_cred_handle;
+
+ if (server) {
+ str_data[3] = TELQUAL_REPLY;
+ gethostname(lhostname, sizeof(lhostname));
+ strcpy(targ_printable, "SERVICE:rcmd@");
+ strcat(targ_printable, lhostname);
+ input_name_buffer.length = strlen(targ_printable);
+ input_name_buffer.value = targ_printable;
+ major_status = gss_import_name(&status,
+ &input_name_buffer,
+ GSS_C_NULL_OID,
+ &desired_targname);
+ major_status = gss_acquire_cred(&status,
+ desired_targname,
+ 0,
+ GSS_C_NULL_OID_SET,
+ GSS_C_ACCEPT,
+ &tmp_cred_handle,
+ &actual_mechs,
+ &lifetime_rec);
+ if (major_status != GSS_S_COMPLETE) return(0);
+ } else {
+ str_data[3] = TELQUAL_IS;
+ }
+ return(1);
+}
+
+ int
+spx_send(ap)
+ Authenticator *ap;
+{
+ Block enckey;
+ int r;
+
+ gss_OID actual_mech_type, output_name_type;
+ int msg_ctx = 0, new_status, status;
+ int req_flags = 0, ret_flags, lifetime_rec, major_status;
+ gss_buffer_desc output_token, input_token, input_name_buffer;
+ gss_buffer_desc output_name_buffer, status_string;
+ gss_name_t desired_targname;
+ gss_channel_bindings input_chan_bindings;
+ char targ_printable[GSS_C_MAX_PRINTABLE_NAME];
+ int from_addr=0, to_addr=0, myhostlen, j;
+ int deleg_flag=1, mutual_flag=0, replay_flag=0, seq_flag=0;
+ char *address;
+
+ printf("[ Trying SPX ... ]\n");
+ strcpy(targ_printable, "SERVICE:rcmd@");
+ strcat(targ_printable, RemoteHostName);
+
+ input_name_buffer.length = strlen(targ_printable);
+ input_name_buffer.value = targ_printable;
+
+ if (!UserNameRequested) {
+ return(0);
+ }
+
+ major_status = gss_import_name(&status,
+ &input_name_buffer,
+ GSS_C_NULL_OID,
+ &desired_targname);
+
+
+ major_status = gss_display_name(&status,
+ desired_targname,
+ &output_name_buffer,
+ &output_name_type);
+
+ printf("target is '%s'\n", output_name_buffer.value); fflush(stdout);
+
+ major_status = gss_release_buffer(&status, &output_name_buffer);
+
+ input_chan_bindings = (gss_channel_bindings)
+ malloc(sizeof(gss_channel_bindings_desc));
+
+ input_chan_bindings->initiator_addrtype = GSS_C_AF_INET;
+ input_chan_bindings->initiator_address.length = 4;
+ address = (char *) malloc(4);
+ input_chan_bindings->initiator_address.value = (char *) address;
+ address[0] = ((from_addr & 0xff000000) >> 24);
+ address[1] = ((from_addr & 0xff0000) >> 16);
+ address[2] = ((from_addr & 0xff00) >> 8);
+ address[3] = (from_addr & 0xff);
+ input_chan_bindings->acceptor_addrtype = GSS_C_AF_INET;
+ input_chan_bindings->acceptor_address.length = 4;
+ address = (char *) malloc(4);
+ input_chan_bindings->acceptor_address.value = (char *) address;
+ address[0] = ((to_addr & 0xff000000) >> 24);
+ address[1] = ((to_addr & 0xff0000) >> 16);
+ address[2] = ((to_addr & 0xff00) >> 8);
+ address[3] = (to_addr & 0xff);
+ input_chan_bindings->application_data.length = 0;
+
+ req_flags = 0;
+ if (deleg_flag) req_flags = req_flags | 1;
+ if (mutual_flag) req_flags = req_flags | 2;
+ if (replay_flag) req_flags = req_flags | 4;
+ if (seq_flag) req_flags = req_flags | 8;
+
+ major_status = gss_init_sec_context(&status, /* minor status */
+ GSS_C_NO_CREDENTIAL, /* cred handle */
+ &actual_ctxhandle, /* ctx handle */
+ desired_targname, /* target name */
+ GSS_C_NULL_OID, /* mech type */
+ req_flags, /* req flags */
+ 0, /* time req */
+ input_chan_bindings, /* chan binding */
+ GSS_C_NO_BUFFER, /* input token */
+ &actual_mech_type, /* actual mech */
+ &output_token, /* output token */
+ &ret_flags, /* ret flags */
+ &lifetime_rec); /* time rec */
+
+ if ((major_status != GSS_S_COMPLETE) &&
+ (major_status != GSS_S_CONTINUE_NEEDED)) {
+ gss_display_status(&new_status,
+ status,
+ GSS_C_MECH_CODE,
+ GSS_C_NULL_OID,
+ &msg_ctx,
+ &status_string);
+ printf("%s\n", status_string.value);
+ return(0);
+ }
+
+ if (!auth_sendname(UserNameRequested, strlen(UserNameRequested))) {
+ return(0);
+ }
+
+ if (!Data(ap, SPX_AUTH, (void *)output_token.value, output_token.length)) {
+ return(0);
+ }
+
+ return(1);
+}
+
+ void
+spx_is(ap, data, cnt)
+ Authenticator *ap;
+ unsigned char *data;
+ int cnt;
+{
+ Session_Key skey;
+ Block datablock;
+ int r;
+
+ if (cnt-- < 1)
+ return;
+ switch (*data++) {
+ case SPX_AUTH:
+ input_token.length = cnt;
+ input_token.value = (char *) data;
+
+ gethostname(lhostname, sizeof(lhostname));
+
+ strcpy(targ_printable, "SERVICE:rcmd@");
+ strcat(targ_printable, lhostname);
+
+ input_name_buffer.length = strlen(targ_printable);
+ input_name_buffer.value = targ_printable;
+
+ major_status = gss_import_name(&status,
+ &input_name_buffer,
+ GSS_C_NULL_OID,
+ &desired_targname);
+
+ major_status = gss_acquire_cred(&status,
+ desired_targname,
+ 0,
+ GSS_C_NULL_OID_SET,
+ GSS_C_ACCEPT,
+ &gss_cred_handle,
+ &actual_mechs,
+ &lifetime_rec);
+
+ major_status = gss_release_name(&status, desired_targname);
+
+ input_chan_bindings = (gss_channel_bindings)
+ malloc(sizeof(gss_channel_bindings_desc));
+
+ input_chan_bindings->initiator_addrtype = GSS_C_AF_INET;
+ input_chan_bindings->initiator_address.length = 4;
+ address = (char *) malloc(4);
+ input_chan_bindings->initiator_address.value = (char *) address;
+ address[0] = ((from_addr & 0xff000000) >> 24);
+ address[1] = ((from_addr & 0xff0000) >> 16);
+ address[2] = ((from_addr & 0xff00) >> 8);
+ address[3] = (from_addr & 0xff);
+ input_chan_bindings->acceptor_addrtype = GSS_C_AF_INET;
+ input_chan_bindings->acceptor_address.length = 4;
+ address = (char *) malloc(4);
+ input_chan_bindings->acceptor_address.value = (char *) address;
+ address[0] = ((to_addr & 0xff000000) >> 24);
+ address[1] = ((to_addr & 0xff0000) >> 16);
+ address[2] = ((to_addr & 0xff00) >> 8);
+ address[3] = (to_addr & 0xff);
+ input_chan_bindings->application_data.length = 0;
+
+ major_status = gss_accept_sec_context(&status,
+ &context_handle,
+ gss_cred_handle,
+ &input_token,
+ input_chan_bindings,
+ &src_name,
+ &actual_mech_type,
+ &output_token,
+ &ret_flags,
+ &lifetime_rec,
+ &gss_delegated_cred_handle);
+
+
+ if (major_status != GSS_S_COMPLETE) {
+
+ major_status = gss_display_name(&status,
+ src_name,
+ &fullname_buffer,
+ &fullname_type);
+ Data(ap, SPX_REJECT, (void *)"auth failed", -1);
+ auth_finished(ap, AUTH_REJECT);
+ return;
+ }
+
+ major_status = gss_display_name(&status,
+ src_name,
+ &fullname_buffer,
+ &fullname_type);
+
+
+ Data(ap, SPX_ACCEPT, (void *)output_token.value, output_token.length);
+ auth_finished(ap, AUTH_USER);
+ break;
+
+ default:
+ Data(ap, SPX_REJECT, 0, 0);
+ break;
+ }
+}
+
+
+ void
+spx_reply(ap, data, cnt)
+ Authenticator *ap;
+ unsigned char *data;
+ int cnt;
+{
+ Session_Key skey;
+
+ if (cnt-- < 1)
+ return;
+ switch (*data++) {
+ case SPX_REJECT:
+ if (cnt > 0) {
+ printf("[ SPX refuses authentication because %.*s ]\r\n",
+ cnt, data);
+ } else
+ printf("[ SPX refuses authentication ]\r\n");
+ auth_send_retry();
+ return;
+ case SPX_ACCEPT:
+ printf("[ SPX accepts you ]\n");
+ if ((ap->way & AUTH_HOW_MASK) == AUTH_HOW_MUTUAL) {
+ /*
+ * Send over the encrypted challange.
+ */
+ input_token.value = (char *) data;
+ input_token.length = cnt;
+
+ major_status = gss_init_sec_context(&status, /* minor stat */
+ GSS_C_NO_CREDENTIAL, /* cred handle */
+ &actual_ctxhandle, /* ctx handle */
+ desired_targname, /* target name */
+ GSS_C_NULL_OID, /* mech type */
+ req_flags, /* req flags */
+ 0, /* time req */
+ input_chan_bindings, /* chan binding */
+ &input_token, /* input token */
+ &actual_mech_type, /* actual mech */
+ &output_token, /* output token */
+ &ret_flags, /* ret flags */
+ &lifetime_rec); /* time rec */
+
+ if (major_status != GSS_S_COMPLETE) {
+ gss_display_status(&new_status,
+ status,
+ GSS_C_MECH_CODE,
+ GSS_C_NULL_OID,
+ &msg_ctx,
+ &status_string);
+ printf("[ SPX mutual response fails ... '%s' ]\r\n",
+ status_string.value);
+ auth_send_retry();
+ return;
+ }
+ }
+ auth_finished(ap, AUTH_USER);
+ return;
+
+ default:
+ return;
+ }
+}
+
+ int
+spx_status(ap, name, level)
+ Authenticator *ap;
+ char *name;
+ int level;
+{
+
+ gss_buffer_desc fullname_buffer, acl_file_buffer;
+ gss_OID fullname_type;
+ char acl_file[160], fullname[160];
+ int major_status, status = 0;
+ struct passwd *pwd;
+
+ /*
+ * hard code fullname to
+ * "SPX:/C=US/O=Digital/OU=LKG/OU=Sphinx/OU=Users/CN=Kannan Alagappan"
+ * and acl_file to "~kannan/.sphinx"
+ */
+
+ pwd = getpwnam(UserNameRequested);
+ if (pwd == NULL) {
+ return(AUTH_USER); /* not authenticated */
+ }
+
+ strcpy(acl_file, pwd->pw_dir);
+ strcat(acl_file, "/.sphinx");
+ acl_file_buffer.value = acl_file;
+ acl_file_buffer.length = strlen(acl_file);
+
+ major_status = gss_display_name(&status,
+ src_name,
+ &fullname_buffer,
+ &fullname_type);
+
+ if (level < AUTH_USER)
+ return(level);
+
+ major_status = gss__check_acl(&status, &fullname_buffer,
+ &acl_file_buffer);
+
+ if (major_status == GSS_S_COMPLETE) {
+ strcpy(name, UserNameRequested);
+ return(AUTH_VALID);
+ } else {
+ return(AUTH_USER);
+ }
+
+}
+
+#define BUMP(buf, len) while (*(buf)) {++(buf), --(len);}
+#define ADDC(buf, len, c) if ((len) > 0) {*(buf)++ = (c); --(len);}
+
+ void
+spx_printsub(data, cnt, buf, buflen)
+ unsigned char *data, *buf;
+ int cnt, buflen;
+{
+ char lbuf[32];
+ register int i;
+
+ buf[buflen-1] = '\0'; /* make sure its NULL terminated */
+ buflen -= 1;
+
+ switch(data[3]) {
+ case SPX_REJECT: /* Rejected (reason might follow) */
+ strncpy((char *)buf, " REJECT ", buflen);
+ goto common;
+
+ case SPX_ACCEPT: /* Accepted (name might follow) */
+ strncpy((char *)buf, " ACCEPT ", buflen);
+ common:
+ BUMP(buf, buflen);
+ if (cnt <= 4)
+ break;
+ ADDC(buf, buflen, '"');
+ for (i = 4; i < cnt; i++)
+ ADDC(buf, buflen, data[i]);
+ ADDC(buf, buflen, '"');
+ ADDC(buf, buflen, '\0');
+ break;
+
+ case SPX_AUTH: /* Authentication data follows */
+ strncpy((char *)buf, " AUTH", buflen);
+ goto common2;
+
+ default:
+ sprintf(lbuf, " %d (unknown)", data[3]);
+ strncpy((char *)buf, lbuf, buflen);
+ common2:
+ BUMP(buf, buflen);
+ for (i = 4; i < cnt; i++) {
+ sprintf(lbuf, " %d", data[i]);
+ strncpy((char *)buf, lbuf, buflen);
+ BUMP(buf, buflen);
+ }
+ break;
+ }
+}
+
+#endif
+
+#ifdef notdef
+
+prkey(msg, key)
+ char *msg;
+ unsigned char *key;
+{
+ register int i;
+ printf("%s:", msg);
+ for (i = 0; i < 8; i++)
+ printf(" %3d", key[i]);
+ printf("\r\n");
+}
+#endif
--- /dev/null
+/*
+ * Copyright (c) 1987 Regents of the University of California.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms are permitted
+ * provided that: (1) source distributions retain this entire copyright
+ * notice and comment, and (2) distributions including binaries display
+ * the following acknowledgement: ``This product includes software
+ * developed by the University of California, Berkeley and its contributors''
+ * in the documentation or other materials provided with the distribution
+ * and in all advertising materials mentioning features or use of this
+ * software. Neither the name of the University nor the names of its
+ * contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)strcasecmp.c 5.9 (Berkeley) 6/1/90";
+#endif /* LIBC_SCCS and not lint */
+
+typedef unsigned char u_char;
+
+/*
+ * This array is designed for mapping upper and lower case letter
+ * together for a case independent comparison. The mappings are
+ * based upon ascii character sequences.
+ */
+static u_char charmap[] = {
+ '\000', '\001', '\002', '\003', '\004', '\005', '\006', '\007',
+ '\010', '\011', '\012', '\013', '\014', '\015', '\016', '\017',
+ '\020', '\021', '\022', '\023', '\024', '\025', '\026', '\027',
+ '\030', '\031', '\032', '\033', '\034', '\035', '\036', '\037',
+ '\040', '\041', '\042', '\043', '\044', '\045', '\046', '\047',
+ '\050', '\051', '\052', '\053', '\054', '\055', '\056', '\057',
+ '\060', '\061', '\062', '\063', '\064', '\065', '\066', '\067',
+ '\070', '\071', '\072', '\073', '\074', '\075', '\076', '\077',
+ '\100', '\141', '\142', '\143', '\144', '\145', '\146', '\147',
+ '\150', '\151', '\152', '\153', '\154', '\155', '\156', '\157',
+ '\160', '\161', '\162', '\163', '\164', '\165', '\166', '\167',
+ '\170', '\171', '\172', '\133', '\134', '\135', '\136', '\137',
+ '\140', '\141', '\142', '\143', '\144', '\145', '\146', '\147',
+ '\150', '\151', '\152', '\153', '\154', '\155', '\156', '\157',
+ '\160', '\161', '\162', '\163', '\164', '\165', '\166', '\167',
+ '\170', '\171', '\172', '\173', '\174', '\175', '\176', '\177',
+ '\200', '\201', '\202', '\203', '\204', '\205', '\206', '\207',
+ '\210', '\211', '\212', '\213', '\214', '\215', '\216', '\217',
+ '\220', '\221', '\222', '\223', '\224', '\225', '\226', '\227',
+ '\230', '\231', '\232', '\233', '\234', '\235', '\236', '\237',
+ '\240', '\241', '\242', '\243', '\244', '\245', '\246', '\247',
+ '\250', '\251', '\252', '\253', '\254', '\255', '\256', '\257',
+ '\260', '\261', '\262', '\263', '\264', '\265', '\266', '\267',
+ '\270', '\271', '\272', '\273', '\274', '\275', '\276', '\277',
+ '\300', '\301', '\302', '\303', '\304', '\305', '\306', '\307',
+ '\310', '\311', '\312', '\313', '\314', '\315', '\316', '\317',
+ '\320', '\321', '\322', '\323', '\324', '\325', '\326', '\327',
+ '\330', '\331', '\332', '\333', '\334', '\335', '\336', '\337',
+ '\340', '\341', '\342', '\343', '\344', '\345', '\346', '\347',
+ '\350', '\351', '\352', '\353', '\354', '\355', '\356', '\357',
+ '\360', '\361', '\362', '\363', '\364', '\365', '\366', '\367',
+ '\370', '\371', '\372', '\373', '\374', '\375', '\376', '\377',
+};
+
+int
+strcasecmp(s1, s2)
+ char *s1, *s2;
+{
+ register u_char *cm = charmap,
+ *us1 = (u_char *)s1,
+ *us2 = (u_char *)s2;
+
+ while (cm[*us1] == cm[*us2++])
+ if (*us1++ == '\0')
+ return(0);
+ return(cm[*us1] - cm[*--us2]);
+}
+
+int
+strncasecmp(s1, s2, n)
+ char *s1, *s2;
+ register int n;
+{
+ if (n != 0) {
+ register u_char *cm = charmap,
+ *us1 = (u_char *)s1,
+ *us2 = (u_char *)s2;
+
+ do {
+ if (cm[*us1] != cm[*us2++])
+ return(cm[*us1] - cm[*--us2]);
+ if (*us1++ == '\0')
+ break;
+ } while (--n != 0);
+ }
+ return(0);
+}
--- /dev/null
+/*
+ * Copyright (c) 1988 Regents of the University of California.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms are permitted
+ * provided that the above copyright notice and this paragraph are
+ * duplicated in all such forms and that any documentation,
+ * advertising materials, and other materials related to such
+ * distribution and use acknowledge that the software was developed
+ * by the University of California, Berkeley. The name of the
+ * University may not be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
+ * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)strchr.c 5.5 (Berkeley) 5/15/90";
+#endif /* LIBC_SCCS and not lint */
+
+#ifdef NO_STRING_H
+#include <strings.h>
+#else
+#include <string.h>
+#endif
+
+char *
+strchr(p, ch)
+ char *p, ch;
+{
+ return(index(p, ch));
+}
--- /dev/null
+/*
+ * Copyright (c) 1988 The Regents of the University of California.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms are permitted
+ * provided that: (1) source distributions retain this entire copyright
+ * notice and comment, and (2) distributions including binaries display
+ * the following acknowledgement: ``This product includes software
+ * developed by the University of California, Berkeley and its contributors''
+ * in the documentation or other materials provided with the distribution
+ * and in all advertising materials mentioning features or use of this
+ * software. Neither the name of the University nor the names of its
+ * contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)strdup.c 5.3 (Berkeley) 6/1/90";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/types.h>
+#ifdef NO_STRING_H
+#include <strings.h>
+#else
+#include <string.h>
+#endif
+
+
+char *
+strdup(str)
+ char *str;
+{
+ int len;
+ char *copy, *malloc();
+
+ len = strlen(str) + 1;
+ if (!(copy = malloc((u_int)len)))
+ return((char *)0);
+ bcopy(str, copy, len);
+ return(copy);
+}
--- /dev/null
+/*
+ * Copyright (c) 1988 Regents of the University of California.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms are permitted provided
+ * that: (1) source distributions retain this entire copyright notice and
+ * comment, and (2) distributions including binaries display the following
+ * acknowledgement: ``This product includes software developed by the
+ * University of California, Berkeley and its contributors'' in the
+ * documentation or other materials provided with the distribution and in
+ * all advertising materials mentioning features or use of this software.
+ * Neither the name of the University nor the names of its contributors may
+ * be used to endorse or promote products derived from this software without
+ * specific prior written permission.
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)strerror.c 5.4 (Berkeley) 6/24/90";
+#endif /* LIBC_SCCS and not lint */
+
+#ifdef NO_STRING_H
+#include <strings.h>
+#else
+#include <string.h>
+#endif
+
+char *
+strerror(errnum)
+ int errnum;
+{
+ extern int sys_nerr;
+ extern char *sys_errlist[];
+ static char ebuf[40]; /* 64-bit number + slop */
+
+ if ((unsigned int)errnum < sys_nerr)
+ return(sys_errlist[errnum]);
+ (void)sprintf(ebuf, "Unknown error: %d", errnum);
+ return(ebuf);
+}
--- /dev/null
+/*
+ * Copyright (c) 1989 The Regents of the University of California.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms are permitted
+ * provided that: (1) source distributions retain this entire copyright
+ * notice and comment, and (2) distributions including binaries display
+ * the following acknowledgement: ``This product includes software
+ * developed by the University of California, Berkeley and its contributors''
+ * in the documentation or other materials provided with the distribution
+ * and in all advertising materials mentioning features or use of this
+ * software. Neither the name of the University nor the names of its
+ * contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)strftime.c 5.8 (Berkeley) 6/1/90";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/types.h>
+#include <time.h>
+#define TM_YEAR_BASE 1900 /* from <tzfile.h> */
+#ifdef NO_STRING_H
+#include <strings.h>
+#else
+#include <string.h>
+#endif
+
+static char *afmt[] = {
+ "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat",
+};
+static char *Afmt[] = {
+ "Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday",
+ "Saturday",
+};
+static char *bfmt[] = {
+ "Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep",
+ "Oct", "Nov", "Dec",
+};
+static char *Bfmt[] = {
+ "January", "February", "March", "April", "May", "June", "July",
+ "August", "September", "October", "November", "December",
+};
+
+static size_t gsize;
+static char *pt;
+
+size_t
+strftime(s, maxsize, format, t)
+ char *s;
+ char *format;
+ size_t maxsize;
+ struct tm *t;
+{
+ size_t _fmt();
+
+ pt = s;
+ if ((gsize = maxsize) < 1)
+ return(0);
+ if (_fmt(format, t)) {
+ *pt = '\0';
+ return(maxsize - gsize);
+ }
+ return(0);
+}
+
+static size_t
+_fmt(format, t)
+ register char *format;
+ struct tm *t;
+{
+ for (; *format; ++format) {
+ if (*format == '%')
+ switch(*++format) {
+ case '\0':
+ --format;
+ break;
+ case 'A':
+ if (t->tm_wday < 0 || t->tm_wday > 6)
+ return(0);
+ if (!_add(Afmt[t->tm_wday]))
+ return(0);
+ continue;
+ case 'a':
+ if (t->tm_wday < 0 || t->tm_wday > 6)
+ return(0);
+ if (!_add(afmt[t->tm_wday]))
+ return(0);
+ continue;
+ case 'B':
+ if (t->tm_mon < 0 || t->tm_mon > 11)
+ return(0);
+ if (!_add(Bfmt[t->tm_mon]))
+ return(0);
+ continue;
+ case 'b':
+ case 'h':
+ if (t->tm_mon < 0 || t->tm_mon > 11)
+ return(0);
+ if (!_add(bfmt[t->tm_mon]))
+ return(0);
+ continue;
+ case 'C':
+ if (!_fmt("%a %b %e %H:%M:%S %Y", t))
+ return(0);
+ continue;
+ case 'c':
+ if (!_fmt("%m/%d/%y %H:%M:%S", t))
+ return(0);
+ continue;
+ case 'e':
+ if (!_conv(t->tm_mday, 2, ' '))
+ return(0);
+ continue;
+ case 'D':
+ if (!_fmt("%m/%d/%y", t))
+ return(0);
+ continue;
+ case 'd':
+ if (!_conv(t->tm_mday, 2, '0'))
+ return(0);
+ continue;
+ case 'H':
+ if (!_conv(t->tm_hour, 2, '0'))
+ return(0);
+ continue;
+ case 'I':
+ if (!_conv(t->tm_hour % 12 ?
+ t->tm_hour % 12 : 12, 2, '0'))
+ return(0);
+ continue;
+ case 'j':
+ if (!_conv(t->tm_yday + 1, 3, '0'))
+ return(0);
+ continue;
+ case 'k':
+ if (!_conv(t->tm_hour, 2, ' '))
+ return(0);
+ continue;
+ case 'l':
+ if (!_conv(t->tm_hour % 12 ?
+ t->tm_hour % 12 : 12, 2, ' '))
+ return(0);
+ continue;
+ case 'M':
+ if (!_conv(t->tm_min, 2, '0'))
+ return(0);
+ continue;
+ case 'm':
+ if (!_conv(t->tm_mon + 1, 2, '0'))
+ return(0);
+ continue;
+ case 'n':
+ if (!_add("\n"))
+ return(0);
+ continue;
+ case 'p':
+ if (!_add(t->tm_hour >= 12 ? "PM" : "AM"))
+ return(0);
+ continue;
+ case 'R':
+ if (!_fmt("%H:%M", t))
+ return(0);
+ continue;
+ case 'r':
+ if (!_fmt("%I:%M:%S %p", t))
+ return(0);
+ continue;
+ case 'S':
+ if (!_conv(t->tm_sec, 2, '0'))
+ return(0);
+ continue;
+ case 'T':
+ case 'X':
+ if (!_fmt("%H:%M:%S", t))
+ return(0);
+ continue;
+ case 't':
+ if (!_add("\t"))
+ return(0);
+ continue;
+ case 'U':
+ if (!_conv((t->tm_yday + 7 - t->tm_wday) / 7,
+ 2, '0'))
+ return(0);
+ continue;
+ case 'W':
+ if (!_conv((t->tm_yday + 7 -
+ (t->tm_wday ? (t->tm_wday - 1) : 6))
+ / 7, 2, '0'))
+ return(0);
+ continue;
+ case 'w':
+ if (!_conv(t->tm_wday, 1, '0'))
+ return(0);
+ continue;
+ case 'x':
+ if (!_fmt("%m/%d/%y", t))
+ return(0);
+ continue;
+ case 'y':
+ if (!_conv((t->tm_year + TM_YEAR_BASE)
+ % 100, 2, '0'))
+ return(0);
+ continue;
+ case 'Y':
+ if (!_conv(t->tm_year + TM_YEAR_BASE, 4, '0'))
+ return(0);
+ continue;
+#ifdef notdef
+ case 'Z':
+ if (!t->tm_zone || !_add(t->tm_zone))
+ return(0);
+ continue;
+#endif
+ case '%':
+ /*
+ * X311J/88-090 (4.12.3.5): if conversion char is
+ * undefined, behavior is undefined. Print out the
+ * character itself as printf(3) does.
+ */
+ default:
+ break;
+ }
+ if (!gsize--)
+ return(0);
+ *pt++ = *format;
+ }
+ return(gsize);
+}
+
+static
+_conv(n, digits, pad)
+ int n, digits;
+ char pad;
+{
+ static char buf[10];
+ register char *p;
+
+ for (p = buf + sizeof(buf) - 2; n > 0 && p > buf; n /= 10, --digits)
+ *p-- = n % 10 + '0';
+ while (p > buf && digits-- > 0)
+ *p-- = pad;
+ return(_add(++p));
+}
+
+static
+_add(str)
+ register char *str;
+{
+ for (;; ++pt, --gsize) {
+ if (!gsize)
+ return(0);
+ if (!(*pt = *str++))
+ return(1);
+ }
+}
--- /dev/null
+/*
+ * Copyright (c) 1988 Regents of the University of California.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms are permitted
+ * provided that the above copyright notice and this paragraph are
+ * duplicated in all such forms and that any documentation,
+ * advertising materials, and other materials related to such
+ * distribution and use acknowledge that the software was developed
+ * by the University of California, Berkeley. The name of the
+ * University may not be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
+ * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)strrchr.c 5.6 (Berkeley) 5/17/90";
+#endif /* LIBC_SCCS and not lint */
+
+#ifdef NO_STRING_H
+#include <strings.h>
+#else
+#include <string.h>
+#endif
+
+char *
+strrchr(p, ch)
+ char *p, ch;
+{
+ return(rindex(p, ch));
+}
--- /dev/null
+*** stty.c.old Tue May 23 13:54:29 1989
+--- stty.c Wed Aug 23 13:42:32 1989
+***************
+*** 20,25 ****
+--- 20,28 ----
+
+ #include <stdio.h>
+ #include <sys/ioctl.h>
++ #include <sys/types.h>
++ #define NO_T_CHARS_DEFINES
++ #include <sys/tty.h>
+
+ struct
+ {
+***************
+*** 145,150 ****
+--- 148,156 ----
+ struct winsize win;
+ int lmode;
+ int oldisc, ldisc;
++ #ifdef TIOCGSTATE
++ int extproc;
++ #endif
+
+ struct special {
+ char *name;
+***************
+*** 188,193 ****
+--- 194,203 ----
+ ioctl(1, TIOCLGET, &lmode);
+ ioctl(1, TIOCGLTC, <c);
+ ioctl(1, TIOCGWINSZ, &win);
++ #ifdef TIOCGSTATE
++ ioctl(1, TIOCGSTATE, &extproc);
++ extproc &= TS_EXTPROC;
++ #endif
+ if(argc == 1) {
+ prmodes(0);
+ exit(0);
+***************
+*** 292,297 ****
+--- 302,316 ----
+ printf("%d %d\n", win.ws_row, win.ws_col);
+ exit(0);
+ }
++ #if defined(TIOCEXT)
++ if (eq("extproc") || eq("-extproc")) {
++ if (**argv == '-')
++ extproc = 0;
++ else
++ extproc = 1;
++ ioctl(1, TIOCEXT, &extproc);
++ }
++ #endif
+ for(i=0; speeds[i].string; i++)
+ if(eq(speeds[i].string)) {
+ mode.sg_ispeed = mode.sg_ospeed = speeds[i].speed;
+***************
+*** 438,443 ****
+--- 457,468 ----
+ lpit(LPENDIN, "-pendin ");
+ lpit(LDECCTQ, "-decctlq ");
+ lpit(LNOFLSH, "-noflsh ");
++ #ifdef TIOCGSTATE
++ if (all==2||extproc) {
++ fprintf(stderr,"-extproc"+(extproc!=0));
++ any++;
++ }
++ #endif
+ if (any || nothing)
+ fprintf(stderr,"\n");
+ } else if (!all)
--- /dev/null
+
+ Three pieces of state need to be kept for each side of each option.
+ (You need the localside, sending WILL/WONT & receiving DO/DONT, and
+ the remoteside, sending DO/DONT and receiving WILL/WONT)
+
+ MY_STATE: What state am I in?
+ WANT_STATE: What state do I want?
+ WANT_RESP: How many requests have I initiated?
+
+ Default values:
+ MY_STATE = WANT_STATE = DONT
+ WANT_RESP = 0
+
+ The local setup will change based on the state of the Telnet
+ variables. When we are the originator, we can either make the
+ local setup changes at option request time (in which case if
+ the option is denied we need to change things back) or when
+ the option is acknowledged.
+
+ To initiate a switch to NEW_STATE:
+
+ if ((WANT_RESP == 0 && NEW_STATE == MY_STATE) ||
+ WANT_STATE == NEW_STATE) {
+ do nothing;
+ } else {
+ /*
+ * This is where the logic goes to change the local setup
+ * if we are doing so at request initiation
+ */
+ WANT_STATE = NEW_STATE;
+ send NEW_STATE;
+ WANT_RESP += 1;
+ }
+
+ When receiving NEW_STATE:
+
+ if (WANT_RESP) {
+ --WANT_RESP;
+ if (WANT_RESP && (NEW_STATE == MY_STATE))
+ --WANT_RESP;
+ }
+ if (WANT_RESP == 0) {
+ if (NEW_STATE != WANT_STATE) {
+ /*
+ * This is where the logic goes to decide if it is ok
+ * to switch to NEW_STATE, and if so, do any necessary
+ * local setup changes.
+ */
+ if (ok_to_switch_to NEW_STATE)
+ WANT_STATE = NEW_STATE;
+ else
+ WANT_RESP++;
+* if (MY_STATE != WANT_STATE)
+ reply with WANT_STATE;
+ } else {
+ /*
+ * This is where the logic goes to change the local setup
+ * if we are doing so at request acknowledgment
+ */
+ }
+ }
+ MY_STATE = NEW_STATE;
+
+* This if() line is not needed, it should be ok to always do the
+ "reply with WANT_STATE". With the if() line, asking to turn on
+ an option that the other side doesn't understand is:
+ Send DO option
+ Recv WONT option
+ Without the if() line, it is:
+ Send DO option
+ Recv WONT option
+ Send DONT option
+ If the other side does not expect to receive the latter case,
+ but generates the latter case, then there is a potential for
+ option negotiation loops. An implementation that does not expect
+ to get the second case should not generate it, an implementation
+ that does expect to get it may or may not generate it, and things
+ will still work. Being conservative in what we send, we have the
+ if() statement in, but we expect the other side to generate the
+ last response.
--- /dev/null
+#
+# Copyright (c) 1990 The Regents of the University of California.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms are permitted provided
+# that: (1) source distributions retain this entire copyright notice and
+# comment, and (2) distributions including binaries display the following
+# acknowledgement: ``This product includes software developed by the
+# University of California, Berkeley and its contributors'' in the
+# documentation or other materials provided with the distribution and in
+# all advertising materials mentioning features or use of this software.
+# Neither the name of the University nor the names of its contributors may
+# be used to endorse or promote products derived from this software without
+# specific prior written permission.
+# THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
+# WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
+# MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+#
+# @(#)Makefile 5.6 (Berkeley) 3/5/91
+#
+
+PROG= telnet
+
+CFLAGS+=-DTERMCAP -DKLUDGELINEMODE -DUSE_TERMIO -DAUTHENTICATION -DENCRYPTION
+CFLAGS+=-I${.CURDIR}/../../lib
+
+CFLAGS+= -DKRB4
+
+LDADD= -ltermcap -ltelnet
+LDADD+= -lkrb -ldes
+DPADD= ${LIBTERMCAP}
+
+SRCS= authenc.c commands.c main.c network.c ring.c sys_bsd.c telnet.c \
+ terminal.c tn3270.c utilities.c
+
+.include <bsd.prog.mk>
--- /dev/null
+#
+# Copyright (c) 1991 The Regents of the University of California.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms are permitted provided
+# that: (1) source distributions retain this entire copyright notice and
+# comment, and (2) distributions including binaries display the following
+# acknowledgement: ``This product includes software developed by the
+# University of California, Berkeley and its contributors'' in the
+# documentation or other materials provided with the distribution and in
+# all advertising materials mentioning features or use of this software.
+# Neither the name of the University nor the names of its contributors may
+# be used to endorse or promote products derived from this software without
+# specific prior written permission.
+# THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
+# WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
+# MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+#
+# @(#)Makefile.generic 5.5 (Berkeley) 3/1/91
+#
+
+INCLUDES= -I..
+ARPA_TELNET= ../arpa/telnet.h
+
+SRCS= commands.c main.c network.c ring.c \
+ sys_bsd.c telnet.c terminal.c \
+ utilities.c ${GETOPT_SRC}
+
+CFLAGS= ${LCCFLAGS} ${INCLUDES} ${DEFINES}
+
+ALLHC= ${SRCS} \
+ defines.h externs.h fdset.h general.h \
+ ring.h types.h
+
+OBJS= authenc.o commands.o main.o network.o ring.o sys_bsd.o \
+ telnet.o terminal.o utilities.o ${GETOPT_OBJ}
+MAN= telnet.0
+
+#
+# These next three lines are not needed in 4.4BSD
+#
+.SUFFIXES: .0 .1
+.1.0:
+ nroff -man -h $< > $@
+
+all: telnet
+
+telnet: ${OBJS} ${LIBPATH}
+ ${CC} -o $@ ${CFLAGS} ${OBJS} ${LIBS}
+
+clean: FRC
+ rm -f ${OBJS} core errs l.errs telnet
+
+cleandir: clean
+ rm -f ${MAN} tags .depend
+
+clist: FRC ${SRCS}
+ @for i in ${SRCS} ; \
+ do (echo ${DIRPATH}$$i); done
+
+hclist: FRC ${ALLHC}
+ @for i in ${ALLHC} ; \
+ do (echo ${DIRPATH}$$i); done
+
+depend: FRC ${SRCS}
+ mkdep ${CFLAGS} `make clist`
+
+install: ${MAN} FRC
+ install -s -o bin -g bin -m 755 telnet ${DEST}
+ install -c -o bin -g bin -m 444 telnet.0 ${DESTDIR}/usr/man/cat1
+
+lint: FRC ${SRCS}
+ lint ${CFLAGS} `make clist`
+
+tags: FRC ${SRCS}
+ ctags `make hclist`
+
+FRC:
+
+authenc.o: defines.h externs.h general.h ring.h types.h ${ARPA_TELNET}
+commands.o: defines.h externs.h general.h ring.h types.h ${ARPA_TELNET}
+main.o: defines.h externs.h ring.h
+network.o: defines.h externs.h fdset.h ring.h ${ARPA_TELNET}
+ring.o: general.h ring.h
+sys_bsd.o: defines.h externs.h fdset.h ring.h types.h ${ARPA_TELNET}
+telnet.o: defines.h externs.h general.h ring.h types.h ${ARPA_TELNET}
+terminal.o: externs.h ring.h types.h ${ARPA_TELNET}
+tn3270.o: defines.h externs.h fdset.h general.h ring.h ${ARPA_TELNET}
+utilities.o: defines.h externs.h fdset.h general.h ring.h ${ARPA_TELNET}
--- /dev/null
+#
+# Copyright (c) 1991 The Regents of the University of California.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms are permitted provided
+# that: (1) source distributions retain this entire copyright notice and
+# comment, and (2) distributions including binaries display the following
+# acknowledgement: ``This product includes software developed by the
+# University of California, Berkeley and its contributors'' in the
+# documentation or other materials provided with the distribution and in
+# all advertising materials mentioning features or use of this software.
+# Neither the name of the University nor the names of its contributors may
+# be used to endorse or promote products derived from this software without
+# specific prior written permission.
+# THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
+# WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
+# MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+#
+# @(#)Makefile 5.5 (Berkeley) 3/1/91
+#
+
+#
+# Everything happens in ../Makefile.config and Makefile.generic
+#
+
+all:
+ @-if [ -f ../Config.local ]; \
+ then \
+ echo make -f ../Config.local WHAT=${WHAT} CC="${CC}"; \
+ make -f ../Config.local WHAT=${WHAT} CC="${CC}"; \
+ else \
+ echo make -f ../Config.generic WHAT=${WHAT} CC="${CC}"; \
+ make -f ../Config.generic WHAT=${WHAT} CC="${CC}"; \
+ fi
+
+.DEFAULT:
+ @-if [ -f ../Config.local ]; \
+ then \
+ echo make -f ../Config.local WHAT=${WHAT} CC="${CC}" $@; \
+ make -f ../Config.local WHAT=${WHAT} CC="${CC}" $@; \
+ else \
+ echo make -f ../Config.generic WHAT=${WHAT} CC="${CC}" $@; \
+ make -f ../Config.generic WHAT=${WHAT} CC="${CC}" $@; \
+ fi
--- /dev/null
+/*-
+ * Copyright (c) 1991 The Regents of the University of California.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef lint
+static char sccsid[] = "@(#)authenc.c 5.2 (Berkeley) 12/18/92";
+#endif /* not lint */
+
+#if defined(ENCRYPTION) || defined(AUTHENTICATION)
+#include <sys/types.h>
+#include <arpa/telnet.h>
+#include <libtelnet/encrypt.h>
+#include <libtelnet/misc.h>
+
+#include "general.h"
+#include "ring.h"
+#include "externs.h"
+#include "defines.h"
+#include "types.h"
+
+ int
+net_write(str, len)
+ unsigned char *str;
+ int len;
+{
+ if (NETROOM() > len) {
+ ring_supply_data(&netoring, str, len);
+ if (str[0] == IAC && str[1] == SE)
+ printsub('>', &str[2], len-2);
+ return(len);
+ }
+ return(0);
+}
+
+ void
+net_encrypt()
+{
+#if defined(ENCRYPTION)
+ if (encrypt_output)
+ ring_encrypt(&netoring, encrypt_output);
+ else
+ ring_clearto(&netoring);
+#endif
+}
+
+ int
+telnet_spin()
+{
+ return(-1);
+}
+
+ char *
+telnet_getenv(val)
+ char *val;
+{
+ return((char *)env_getvalue((unsigned char *)val));
+}
+
+ char *
+telnet_gets(prompt, result, length, echo)
+ char *prompt;
+ char *result;
+ int length;
+ int echo;
+{
+ extern char *getpass();
+ extern int globalmode;
+ int om = globalmode;
+ char *res;
+
+ TerminalNewMode(-1);
+ if (echo) {
+ printf("%s", prompt);
+ res = fgets(result, length, stdin);
+ } else if (res = getpass(prompt)) {
+ strncpy(result, res, length);
+ res = result;
+ }
+ TerminalNewMode(om);
+ return(res);
+}
+#endif
--- /dev/null
+/*
+ * Copyright (c) 1988, 1990 Regents of the University of California.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef lint
+static char sccsid[] = "@(#)commands.c 5.8 (Berkeley) 12/18/92";
+#endif /* not lint */
+
+#if defined(unix)
+#include <sys/param.h>
+#if defined(CRAY) || defined(sysV88)
+#include <sys/types.h>
+#endif
+#include <sys/file.h>
+#else
+#include <sys/types.h>
+#endif /* defined(unix) */
+#include <sys/socket.h>
+#include <netinet/in.h>
+#ifdef CRAY
+#include <fcntl.h>
+#endif /* CRAY */
+
+#include <signal.h>
+#include <netdb.h>
+#include <ctype.h>
+#include <pwd.h>
+#include <varargs.h>
+#include <errno.h>
+
+#include <arpa/telnet.h>
+
+#include "general.h"
+
+#include "ring.h"
+
+#include "externs.h"
+#include "defines.h"
+#include "types.h"
+
+#if !defined(CRAY) && !defined(sysV88)
+#include <netinet/in_systm.h>
+# if (defined(vax) || defined(tahoe) || defined(hp300)) && !defined(ultrix)
+# include <machine/endian.h>
+# endif /* vax */
+#endif /* !defined(CRAY) && !defined(sysV88) */
+#include <netinet/ip.h>
+
+
+#ifndef MAXHOSTNAMELEN
+#define MAXHOSTNAMELEN 64
+#endif MAXHOSTNAMELEN
+
+#if defined(IPPROTO_IP) && defined(IP_TOS)
+int tos = -1;
+#endif /* defined(IPPROTO_IP) && defined(IP_TOS) */
+
+char *hostname;
+static char _hostname[MAXHOSTNAMELEN];
+
+extern char *getenv();
+
+extern int isprefix();
+extern char **genget();
+extern int Ambiguous();
+
+static call();
+
+typedef struct {
+ char *name; /* command name */
+ char *help; /* help string (NULL for no help) */
+ int (*handler)(); /* routine which executes command */
+ int needconnect; /* Do we need to be connected to execute? */
+} Command;
+
+static char line[256];
+static char saveline[256];
+static int margc;
+static char *margv[20];
+
+ static void
+makeargv()
+{
+ register char *cp, *cp2, c;
+ register char **argp = margv;
+
+ margc = 0;
+ cp = line;
+ if (*cp == '!') { /* Special case shell escape */
+ strcpy(saveline, line); /* save for shell command */
+ *argp++ = "!"; /* No room in string to get this */
+ margc++;
+ cp++;
+ }
+ while (c = *cp) {
+ register int inquote = 0;
+ while (isspace(c))
+ c = *++cp;
+ if (c == '\0')
+ break;
+ *argp++ = cp;
+ margc += 1;
+ for (cp2 = cp; c != '\0'; c = *++cp) {
+ if (inquote) {
+ if (c == inquote) {
+ inquote = 0;
+ continue;
+ }
+ } else {
+ if (c == '\\') {
+ if ((c = *++cp) == '\0')
+ break;
+ } else if (c == '"') {
+ inquote = '"';
+ continue;
+ } else if (c == '\'') {
+ inquote = '\'';
+ continue;
+ } else if (isspace(c))
+ break;
+ }
+ *cp2++ = c;
+ }
+ *cp2 = '\0';
+ if (c == '\0')
+ break;
+ cp++;
+ }
+ *argp++ = 0;
+}
+
+/*
+ * Make a character string into a number.
+ *
+ * Todo: 1. Could take random integers (12, 0x12, 012, 0b1).
+ */
+
+ static
+special(s)
+ register char *s;
+{
+ register char c;
+ char b;
+
+ switch (*s) {
+ case '^':
+ b = *++s;
+ if (b == '?') {
+ c = b | 0x40; /* DEL */
+ } else {
+ c = b & 0x1f;
+ }
+ break;
+ default:
+ c = *s;
+ break;
+ }
+ return c;
+}
+
+/*
+ * Construct a control character sequence
+ * for a special character.
+ */
+ static char *
+control(c)
+ register cc_t c;
+{
+ static char buf[5];
+ /*
+ * The only way I could get the Sun 3.5 compiler
+ * to shut up about
+ * if ((unsigned int)c >= 0x80)
+ * was to assign "c" to an unsigned int variable...
+ * Arggg....
+ */
+ register unsigned int uic = (unsigned int)c;
+
+ if (uic == 0x7f)
+ return ("^?");
+ if (c == (cc_t)_POSIX_VDISABLE) {
+ return "off";
+ }
+ if (uic >= 0x80) {
+ buf[0] = '\\';
+ buf[1] = ((c>>6)&07) + '0';
+ buf[2] = ((c>>3)&07) + '0';
+ buf[3] = (c&07) + '0';
+ buf[4] = 0;
+ } else if (uic >= 0x20) {
+ buf[0] = c;
+ buf[1] = 0;
+ } else {
+ buf[0] = '^';
+ buf[1] = '@'+c;
+ buf[2] = 0;
+ }
+ return (buf);
+}
+
+
+
+/*
+ * The following are data structures and routines for
+ * the "send" command.
+ *
+ */
+
+struct sendlist {
+ char *name; /* How user refers to it (case independent) */
+ char *help; /* Help information (0 ==> no help) */
+ int needconnect; /* Need to be connected */
+ int narg; /* Number of arguments */
+ int (*handler)(); /* Routine to perform (for special ops) */
+ int nbyte; /* Number of bytes to send this command */
+ int what; /* Character to be sent (<0 ==> special) */
+};
+\f
+
+static int
+ send_esc P((void)),
+ send_help P((void)),
+ send_docmd P((char *)),
+ send_dontcmd P((char *)),
+ send_willcmd P((char *)),
+ send_wontcmd P((char *));
+
+static struct sendlist Sendlist[] = {
+ { "ao", "Send Telnet Abort output", 1, 0, 0, 2, AO },
+ { "ayt", "Send Telnet 'Are You There'", 1, 0, 0, 2, AYT },
+ { "brk", "Send Telnet Break", 1, 0, 0, 2, BREAK },
+ { "break", 0, 1, 0, 0, 2, BREAK },
+ { "ec", "Send Telnet Erase Character", 1, 0, 0, 2, EC },
+ { "el", "Send Telnet Erase Line", 1, 0, 0, 2, EL },
+ { "escape", "Send current escape character", 1, 0, send_esc, 1, 0 },
+ { "ga", "Send Telnet 'Go Ahead' sequence", 1, 0, 0, 2, GA },
+ { "ip", "Send Telnet Interrupt Process", 1, 0, 0, 2, IP },
+ { "intp", 0, 1, 0, 0, 2, IP },
+ { "interrupt", 0, 1, 0, 0, 2, IP },
+ { "intr", 0, 1, 0, 0, 2, IP },
+ { "nop", "Send Telnet 'No operation'", 1, 0, 0, 2, NOP },
+ { "eor", "Send Telnet 'End of Record'", 1, 0, 0, 2, EOR },
+ { "abort", "Send Telnet 'Abort Process'", 1, 0, 0, 2, ABORT },
+ { "susp", "Send Telnet 'Suspend Process'", 1, 0, 0, 2, SUSP },
+ { "eof", "Send Telnet End of File Character", 1, 0, 0, 2, xEOF },
+ { "synch", "Perform Telnet 'Synch operation'", 1, 0, dosynch, 2, 0 },
+ { "getstatus", "Send request for STATUS", 1, 0, get_status, 6, 0 },
+ { "?", "Display send options", 0, 0, send_help, 0, 0 },
+ { "help", 0, 0, 0, send_help, 0, 0 },
+ { "do", 0, 0, 1, send_docmd, 3, 0 },
+ { "dont", 0, 0, 1, send_dontcmd, 3, 0 },
+ { "will", 0, 0, 1, send_willcmd, 3, 0 },
+ { "wont", 0, 0, 1, send_wontcmd, 3, 0 },
+ { 0 }
+};
+
+#define GETSEND(name) ((struct sendlist *) genget(name, (char **) Sendlist, \
+ sizeof(struct sendlist)))
+
+ static int
+sendcmd(argc, argv)
+ int argc;
+ char **argv;
+{
+ int count; /* how many bytes we are going to need to send */
+ int i;
+ int question = 0; /* was at least one argument a question */
+ struct sendlist *s; /* pointer to current command */
+ int success = 0;
+ int needconnect = 0;
+
+ if (argc < 2) {
+ printf("need at least one argument for 'send' command\n");
+ printf("'send ?' for help\n");
+ return 0;
+ }
+ /*
+ * First, validate all the send arguments.
+ * In addition, we see how much space we are going to need, and
+ * whether or not we will be doing a "SYNCH" operation (which
+ * flushes the network queue).
+ */
+ count = 0;
+ for (i = 1; i < argc; i++) {
+ s = GETSEND(argv[i]);
+ if (s == 0) {
+ printf("Unknown send argument '%s'\n'send ?' for help.\n",
+ argv[i]);
+ return 0;
+ } else if (Ambiguous(s)) {
+ printf("Ambiguous send argument '%s'\n'send ?' for help.\n",
+ argv[i]);
+ return 0;
+ }
+ if (i + s->narg >= argc) {
+ fprintf(stderr,
+ "Need %d argument%s to 'send %s' command. 'send %s ?' for help.\n",
+ s->narg, s->narg == 1 ? "" : "s", s->name, s->name);
+ return 0;
+ }
+ count += s->nbyte;
+ if (s->handler == send_help) {
+ send_help();
+ return 0;
+ }
+
+ i += s->narg;
+ needconnect += s->needconnect;
+ }
+ if (!connected && needconnect) {
+ printf("?Need to be connected first.\n");
+ printf("'send ?' for help\n");
+ return 0;
+ }
+ /* Now, do we have enough room? */
+ if (NETROOM() < count) {
+ printf("There is not enough room in the buffer TO the network\n");
+ printf("to process your request. Nothing will be done.\n");
+ printf("('send synch' will throw away most data in the network\n");
+ printf("buffer, if this might help.)\n");
+ return 0;
+ }
+ /* OK, they are all OK, now go through again and actually send */
+ count = 0;
+ for (i = 1; i < argc; i++) {
+ if ((s = GETSEND(argv[i])) == 0) {
+ fprintf(stderr, "Telnet 'send' error - argument disappeared!\n");
+ (void) quit();
+ /*NOTREACHED*/
+ }
+ if (s->handler) {
+ count++;
+ success += (*s->handler)((s->narg > 0) ? argv[i+1] : 0,
+ (s->narg > 1) ? argv[i+2] : 0);
+ i += s->narg;
+ } else {
+ NET2ADD(IAC, s->what);
+ printoption("SENT", IAC, s->what);
+ }
+ }
+ return (count == success);
+}
+
+ static int
+send_esc()
+{
+ NETADD(escape);
+ return 1;
+}
+
+ static int
+send_docmd(name)
+ char *name;
+{
+ void send_do();
+ return(send_tncmd(send_do, "do", name));
+}
+
+ static int
+send_dontcmd(name)
+ char *name;
+{
+ void send_dont();
+ return(send_tncmd(send_dont, "dont", name));
+}
+ static int
+send_willcmd(name)
+ char *name;
+{
+ void send_will();
+ return(send_tncmd(send_will, "will", name));
+}
+ static int
+send_wontcmd(name)
+ char *name;
+{
+ void send_wont();
+ return(send_tncmd(send_wont, "wont", name));
+}
+
+ int
+send_tncmd(func, cmd, name)
+ void (*func)();
+ char *cmd, *name;
+{
+ char **cpp;
+ extern char *telopts[];
+ register int val = 0;
+
+ if (isprefix(name, "help") || isprefix(name, "?")) {
+ register int col, len;
+
+ printf("Usage: send %s <value|option>\n", cmd);
+ printf("\"value\" must be from 0 to 255\n");
+ printf("Valid options are:\n\t");
+
+ col = 8;
+ for (cpp = telopts; *cpp; cpp++) {
+ len = strlen(*cpp) + 3;
+ if (col + len > 65) {
+ printf("\n\t");
+ col = 8;
+ }
+ printf(" \"%s\"", *cpp);
+ col += len;
+ }
+ printf("\n");
+ return 0;
+ }
+ cpp = (char **)genget(name, telopts, sizeof(char *));
+ if (Ambiguous(cpp)) {
+ fprintf(stderr,"'%s': ambiguous argument ('send %s ?' for help).\n",
+ name, cmd);
+ return 0;
+ }
+ if (cpp) {
+ val = cpp - telopts;
+ } else {
+ register char *cp = name;
+
+ while (*cp >= '0' && *cp <= '9') {
+ val *= 10;
+ val += *cp - '0';
+ cp++;
+ }
+ if (*cp != 0) {
+ fprintf(stderr, "'%s': unknown argument ('send %s ?' for help).\n",
+ name, cmd);
+ return 0;
+ } else if (val < 0 || val > 255) {
+ fprintf(stderr, "'%s': bad value ('send %s ?' for help).\n",
+ name, cmd);
+ return 0;
+ }
+ }
+ if (!connected) {
+ printf("?Need to be connected first.\n");
+ return 0;
+ }
+ (*func)(val, 1);
+ return 1;
+}
+
+ static int
+send_help()
+{
+ struct sendlist *s; /* pointer to current command */
+ for (s = Sendlist; s->name; s++) {
+ if (s->help)
+ printf("%-15s %s\n", s->name, s->help);
+ }
+ return(0);
+}
+\f
+/*
+ * The following are the routines and data structures referred
+ * to by the arguments to the "toggle" command.
+ */
+
+ static int
+lclchars()
+{
+ donelclchars = 1;
+ return 1;
+}
+
+ static int
+togdebug()
+{
+#ifndef NOT43
+ if (net > 0 &&
+ (SetSockOpt(net, SOL_SOCKET, SO_DEBUG, debug)) < 0) {
+ perror("setsockopt (SO_DEBUG)");
+ }
+#else /* NOT43 */
+ if (debug) {
+ if (net > 0 && SetSockOpt(net, SOL_SOCKET, SO_DEBUG, 0, 0) < 0)
+ perror("setsockopt (SO_DEBUG)");
+ } else
+ printf("Cannot turn off socket debugging\n");
+#endif /* NOT43 */
+ return 1;
+}
+
+
+ static int
+togcrlf()
+{
+ if (crlf) {
+ printf("Will send carriage returns as telnet <CR><LF>.\n");
+ } else {
+ printf("Will send carriage returns as telnet <CR><NUL>.\n");
+ }
+ return 1;
+}
+
+int binmode;
+
+ static int
+togbinary(val)
+ int val;
+{
+ donebinarytoggle = 1;
+
+ if (val >= 0) {
+ binmode = val;
+ } else {
+ if (my_want_state_is_will(TELOPT_BINARY) &&
+ my_want_state_is_do(TELOPT_BINARY)) {
+ binmode = 1;
+ } else if (my_want_state_is_wont(TELOPT_BINARY) &&
+ my_want_state_is_dont(TELOPT_BINARY)) {
+ binmode = 0;
+ }
+ val = binmode ? 0 : 1;
+ }
+
+ if (val == 1) {
+ if (my_want_state_is_will(TELOPT_BINARY) &&
+ my_want_state_is_do(TELOPT_BINARY)) {
+ printf("Already operating in binary mode with remote host.\n");
+ } else {
+ printf("Negotiating binary mode with remote host.\n");
+ tel_enter_binary(3);
+ }
+ } else {
+ if (my_want_state_is_wont(TELOPT_BINARY) &&
+ my_want_state_is_dont(TELOPT_BINARY)) {
+ printf("Already in network ascii mode with remote host.\n");
+ } else {
+ printf("Negotiating network ascii mode with remote host.\n");
+ tel_leave_binary(3);
+ }
+ }
+ return 1;
+}
+
+ static int
+togrbinary(val)
+ int val;
+{
+ donebinarytoggle = 1;
+
+ if (val == -1)
+ val = my_want_state_is_do(TELOPT_BINARY) ? 0 : 1;
+
+ if (val == 1) {
+ if (my_want_state_is_do(TELOPT_BINARY)) {
+ printf("Already receiving in binary mode.\n");
+ } else {
+ printf("Negotiating binary mode on input.\n");
+ tel_enter_binary(1);
+ }
+ } else {
+ if (my_want_state_is_dont(TELOPT_BINARY)) {
+ printf("Already receiving in network ascii mode.\n");
+ } else {
+ printf("Negotiating network ascii mode on input.\n");
+ tel_leave_binary(1);
+ }
+ }
+ return 1;
+}
+
+ static int
+togxbinary(val)
+ int val;
+{
+ donebinarytoggle = 1;
+
+ if (val == -1)
+ val = my_want_state_is_will(TELOPT_BINARY) ? 0 : 1;
+
+ if (val == 1) {
+ if (my_want_state_is_will(TELOPT_BINARY)) {
+ printf("Already transmitting in binary mode.\n");
+ } else {
+ printf("Negotiating binary mode on output.\n");
+ tel_enter_binary(2);
+ }
+ } else {
+ if (my_want_state_is_wont(TELOPT_BINARY)) {
+ printf("Already transmitting in network ascii mode.\n");
+ } else {
+ printf("Negotiating network ascii mode on output.\n");
+ tel_leave_binary(2);
+ }
+ }
+ return 1;
+}
+
+
+static int togglehelp P((void));
+#if defined(AUTHENTICATION)
+extern int auth_togdebug P((int));
+#endif
+#if defined(ENCRYPTION)
+extern int EncryptAutoEnc P((int));
+extern int EncryptAutoDec P((int));
+extern int EncryptDebug P((int));
+extern int EncryptVerbose P((int));
+#endif
+
+struct togglelist {
+ char *name; /* name of toggle */
+ char *help; /* help message */
+ int (*handler)(); /* routine to do actual setting */
+ int *variable;
+ char *actionexplanation;
+};
+
+static struct togglelist Togglelist[] = {
+ { "autoflush",
+ "flushing of output when sending interrupt characters",
+ 0,
+ &autoflush,
+ "flush output when sending interrupt characters" },
+ { "autosynch",
+ "automatic sending of interrupt characters in urgent mode",
+ 0,
+ &autosynch,
+ "send interrupt characters in urgent mode" },
+#if defined(AUTHENTICATION)
+ { "autologin",
+ "automatic sending of login and/or authentication info",
+ 0,
+ &autologin,
+ "send login name and/or authentication information" },
+ { "authdebug",
+ "Toggle authentication debugging",
+ auth_togdebug,
+ 0,
+ "print authentication debugging information" },
+#endif
+#if defined(ENCRYPTION)
+ { "autoencrypt",
+ "automatic encryption of data stream",
+ EncryptAutoEnc,
+ 0,
+ "automatically encrypt output" },
+ { "autodecrypt",
+ "automatic decryption of data stream",
+ EncryptAutoDec,
+ 0,
+ "automatically decrypt input" },
+ { "verbose_encrypt",
+ "Toggle verbose encryption output",
+ EncryptVerbose,
+ 0,
+ "print verbose encryption output" },
+ { "encdebug",
+ "Toggle encryption debugging",
+ EncryptDebug,
+ 0,
+ "print encryption debugging information" },
+#endif
+ { "skiprc",
+ "don't read ~/.telnetrc file",
+ 0,
+ &skiprc,
+ "read ~/.telnetrc file" },
+ { "binary",
+ "sending and receiving of binary data",
+ togbinary,
+ 0,
+ 0 },
+ { "inbinary",
+ "receiving of binary data",
+ togrbinary,
+ 0,
+ 0 },
+ { "outbinary",
+ "sending of binary data",
+ togxbinary,
+ 0,
+ 0 },
+ { "crlf",
+ "sending carriage returns as telnet <CR><LF>",
+ togcrlf,
+ &crlf,
+ 0 },
+ { "crmod",
+ "mapping of received carriage returns",
+ 0,
+ &crmod,
+ "map carriage return on output" },
+ { "localchars",
+ "local recognition of certain control characters",
+ lclchars,
+ &localchars,
+ "recognize certain control characters" },
+ { " ", "", 0 }, /* empty line */
+#if defined(unix) && defined(TN3270)
+ { "apitrace",
+ "(debugging) toggle tracing of API transactions",
+ 0,
+ &apitrace,
+ "trace API transactions" },
+ { "cursesdata",
+ "(debugging) toggle printing of hexadecimal curses data",
+ 0,
+ &cursesdata,
+ "print hexadecimal representation of curses data" },
+#endif /* defined(unix) && defined(TN3270) */
+ { "debug",
+ "debugging",
+ togdebug,
+ &debug,
+ "turn on socket level debugging" },
+ { "netdata",
+ "printing of hexadecimal network data (debugging)",
+ 0,
+ &netdata,
+ "print hexadecimal representation of network traffic" },
+ { "prettydump",
+ "output of \"netdata\" to user readable format (debugging)",
+ 0,
+ &prettydump,
+ "print user readable output for \"netdata\"" },
+ { "options",
+ "viewing of options processing (debugging)",
+ 0,
+ &showoptions,
+ "show option processing" },
+#if defined(unix)
+ { "termdata",
+ "(debugging) toggle printing of hexadecimal terminal data",
+ 0,
+ &termdata,
+ "print hexadecimal representation of terminal traffic" },
+#endif /* defined(unix) */
+ { "?",
+ 0,
+ togglehelp },
+ { "help",
+ 0,
+ togglehelp },
+ { 0 }
+};
+
+ static int
+togglehelp()
+{
+ struct togglelist *c;
+
+ for (c = Togglelist; c->name; c++) {
+ if (c->help) {
+ if (*c->help)
+ printf("%-15s toggle %s\n", c->name, c->help);
+ else
+ printf("\n");
+ }
+ }
+ printf("\n");
+ printf("%-15s %s\n", "?", "display help information");
+ return 0;
+}
+
+ static void
+settogglehelp(set)
+ int set;
+{
+ struct togglelist *c;
+
+ for (c = Togglelist; c->name; c++) {
+ if (c->help) {
+ if (*c->help)
+ printf("%-15s %s %s\n", c->name, set ? "enable" : "disable",
+ c->help);
+ else
+ printf("\n");
+ }
+ }
+}
+
+#define GETTOGGLE(name) (struct togglelist *) \
+ genget(name, (char **) Togglelist, sizeof(struct togglelist))
+
+ static int
+toggle(argc, argv)
+ int argc;
+ char *argv[];
+{
+ int retval = 1;
+ char *name;
+ struct togglelist *c;
+
+ if (argc < 2) {
+ fprintf(stderr,
+ "Need an argument to 'toggle' command. 'toggle ?' for help.\n");
+ return 0;
+ }
+ argc--;
+ argv++;
+ while (argc--) {
+ name = *argv++;
+ c = GETTOGGLE(name);
+ if (Ambiguous(c)) {
+ fprintf(stderr, "'%s': ambiguous argument ('toggle ?' for help).\n",
+ name);
+ return 0;
+ } else if (c == 0) {
+ fprintf(stderr, "'%s': unknown argument ('toggle ?' for help).\n",
+ name);
+ return 0;
+ } else {
+ if (c->variable) {
+ *c->variable = !*c->variable; /* invert it */
+ if (c->actionexplanation) {
+ printf("%s %s.\n", *c->variable? "Will" : "Won't",
+ c->actionexplanation);
+ }
+ }
+ if (c->handler) {
+ retval &= (*c->handler)(-1);
+ }
+ }
+ }
+ return retval;
+}
+\f
+/*
+ * The following perform the "set" command.
+ */
+
+#ifdef USE_TERMIO
+struct termio new_tc = { 0 };
+#endif
+
+struct setlist {
+ char *name; /* name */
+ char *help; /* help information */
+ void (*handler)();
+ cc_t *charp; /* where it is located at */
+};
+
+static struct setlist Setlist[] = {
+#ifdef KLUDGELINEMODE
+ { "echo", "character to toggle local echoing on/off", 0, &echoc },
+#endif
+ { "escape", "character to escape back to telnet command mode", 0, &escape },
+ { "rlogin", "rlogin escape character", 0, &rlogin },
+ { "tracefile", "file to write trace information to", SetNetTrace, (cc_t *)NetTraceFile},
+ { " ", "" },
+ { " ", "The following need 'localchars' to be toggled true", 0, 0 },
+ { "flushoutput", "character to cause an Abort Output", 0, termFlushCharp },
+ { "interrupt", "character to cause an Interrupt Process", 0, termIntCharp },
+ { "quit", "character to cause an Abort process", 0, termQuitCharp },
+ { "eof", "character to cause an EOF ", 0, termEofCharp },
+ { " ", "" },
+ { " ", "The following are for local editing in linemode", 0, 0 },
+ { "erase", "character to use to erase a character", 0, termEraseCharp },
+ { "kill", "character to use to erase a line", 0, termKillCharp },
+ { "lnext", "character to use for literal next", 0, termLiteralNextCharp },
+ { "susp", "character to cause a Suspend Process", 0, termSuspCharp },
+ { "reprint", "character to use for line reprint", 0, termRprntCharp },
+ { "worderase", "character to use to erase a word", 0, termWerasCharp },
+ { "start", "character to use for XON", 0, termStartCharp },
+ { "stop", "character to use for XOFF", 0, termStopCharp },
+ { "forw1", "alternate end of line character", 0, termForw1Charp },
+ { "forw2", "alternate end of line character", 0, termForw2Charp },
+ { "ayt", "alternate AYT character", 0, termAytCharp },
+ { 0 }
+};
+
+#if defined(CRAY) && !defined(__STDC__)
+/* Work around compiler bug in pcc 4.1.5 */
+ void
+_setlist_init()
+{
+#ifndef KLUDGELINEMODE
+#define N 5
+#else
+#define N 6
+#endif
+ Setlist[N+0].charp = &termFlushChar;
+ Setlist[N+1].charp = &termIntChar;
+ Setlist[N+2].charp = &termQuitChar;
+ Setlist[N+3].charp = &termEofChar;
+ Setlist[N+6].charp = &termEraseChar;
+ Setlist[N+7].charp = &termKillChar;
+ Setlist[N+8].charp = &termLiteralNextChar;
+ Setlist[N+9].charp = &termSuspChar;
+ Setlist[N+10].charp = &termRprntChar;
+ Setlist[N+11].charp = &termWerasChar;
+ Setlist[N+12].charp = &termStartChar;
+ Setlist[N+13].charp = &termStopChar;
+ Setlist[N+14].charp = &termForw1Char;
+ Setlist[N+15].charp = &termForw2Char;
+ Setlist[N+16].charp = &termAytChar;
+#undef N
+}
+#endif /* defined(CRAY) && !defined(__STDC__) */
+
+ static struct setlist *
+getset(name)
+ char *name;
+{
+ return (struct setlist *)
+ genget(name, (char **) Setlist, sizeof(struct setlist));
+}
+
+ void
+set_escape_char(s)
+ char *s;
+{
+ if (rlogin != _POSIX_VDISABLE) {
+ rlogin = (s && *s) ? special(s) : _POSIX_VDISABLE;
+ printf("Telnet rlogin escape character is '%s'.\n",
+ control(rlogin));
+ } else {
+ escape = (s && *s) ? special(s) : _POSIX_VDISABLE;
+ printf("Telnet escape character is '%s'.\n", control(escape));
+ }
+}
+
+ static int
+setcmd(argc, argv)
+ int argc;
+ char *argv[];
+{
+ int value;
+ struct setlist *ct;
+ struct togglelist *c;
+
+ if (argc < 2 || argc > 3) {
+ printf("Format is 'set Name Value'\n'set ?' for help.\n");
+ return 0;
+ }
+ if ((argc == 2) && (isprefix(argv[1], "?") || isprefix(argv[1], "help"))) {
+ for (ct = Setlist; ct->name; ct++)
+ printf("%-15s %s\n", ct->name, ct->help);
+ printf("\n");
+ settogglehelp(1);
+ printf("%-15s %s\n", "?", "display help information");
+ return 0;
+ }
+
+ ct = getset(argv[1]);
+ if (ct == 0) {
+ c = GETTOGGLE(argv[1]);
+ if (c == 0) {
+ fprintf(stderr, "'%s': unknown argument ('set ?' for help).\n",
+ argv[1]);
+ return 0;
+ } else if (Ambiguous(c)) {
+ fprintf(stderr, "'%s': ambiguous argument ('set ?' for help).\n",
+ argv[1]);
+ return 0;
+ }
+ if (c->variable) {
+ if ((argc == 2) || (strcmp("on", argv[2]) == 0))
+ *c->variable = 1;
+ else if (strcmp("off", argv[2]) == 0)
+ *c->variable = 0;
+ else {
+ printf("Format is 'set togglename [on|off]'\n'set ?' for help.\n");
+ return 0;
+ }
+ if (c->actionexplanation) {
+ printf("%s %s.\n", *c->variable? "Will" : "Won't",
+ c->actionexplanation);
+ }
+ }
+ if (c->handler)
+ (*c->handler)(1);
+ } else if (argc != 3) {
+ printf("Format is 'set Name Value'\n'set ?' for help.\n");
+ return 0;
+ } else if (Ambiguous(ct)) {
+ fprintf(stderr, "'%s': ambiguous argument ('set ?' for help).\n",
+ argv[1]);
+ return 0;
+ } else if (ct->handler) {
+ (*ct->handler)(argv[2]);
+ printf("%s set to \"%s\".\n", ct->name, (char *)ct->charp);
+ } else {
+ if (strcmp("off", argv[2])) {
+ value = special(argv[2]);
+ } else {
+ value = _POSIX_VDISABLE;
+ }
+ *(ct->charp) = (cc_t)value;
+ printf("%s character is '%s'.\n", ct->name, control(*(ct->charp)));
+ }
+ slc_check();
+ return 1;
+}
+
+ static int
+unsetcmd(argc, argv)
+ int argc;
+ char *argv[];
+{
+ struct setlist *ct;
+ struct togglelist *c;
+ register char *name;
+
+ if (argc < 2) {
+ fprintf(stderr,
+ "Need an argument to 'unset' command. 'unset ?' for help.\n");
+ return 0;
+ }
+ if (isprefix(argv[1], "?") || isprefix(argv[1], "help")) {
+ for (ct = Setlist; ct->name; ct++)
+ printf("%-15s %s\n", ct->name, ct->help);
+ printf("\n");
+ settogglehelp(0);
+ printf("%-15s %s\n", "?", "display help information");
+ return 0;
+ }
+
+ argc--;
+ argv++;
+ while (argc--) {
+ name = *argv++;
+ ct = getset(name);
+ if (ct == 0) {
+ c = GETTOGGLE(name);
+ if (c == 0) {
+ fprintf(stderr, "'%s': unknown argument ('unset ?' for help).\n",
+ name);
+ return 0;
+ } else if (Ambiguous(c)) {
+ fprintf(stderr, "'%s': ambiguous argument ('unset ?' for help).\n",
+ name);
+ return 0;
+ }
+ if (c->variable) {
+ *c->variable = 0;
+ if (c->actionexplanation) {
+ printf("%s %s.\n", *c->variable? "Will" : "Won't",
+ c->actionexplanation);
+ }
+ }
+ if (c->handler)
+ (*c->handler)(0);
+ } else if (Ambiguous(ct)) {
+ fprintf(stderr, "'%s': ambiguous argument ('unset ?' for help).\n",
+ name);
+ return 0;
+ } else if (ct->handler) {
+ (*ct->handler)(0);
+ printf("%s reset to \"%s\".\n", ct->name, (char *)ct->charp);
+ } else {
+ *(ct->charp) = _POSIX_VDISABLE;
+ printf("%s character is '%s'.\n", ct->name, control(*(ct->charp)));
+ }
+ }
+ return 1;
+}
+\f
+/*
+ * The following are the data structures and routines for the
+ * 'mode' command.
+ */
+#ifdef KLUDGELINEMODE
+extern int kludgelinemode;
+
+ static int
+dokludgemode()
+{
+ kludgelinemode = 1;
+ send_wont(TELOPT_LINEMODE, 1);
+ send_dont(TELOPT_SGA, 1);
+ send_dont(TELOPT_ECHO, 1);
+}
+#endif
+
+ static int
+dolinemode()
+{
+#ifdef KLUDGELINEMODE
+ if (kludgelinemode)
+ send_dont(TELOPT_SGA, 1);
+#endif
+ send_will(TELOPT_LINEMODE, 1);
+ send_dont(TELOPT_ECHO, 1);
+ return 1;
+}
+
+ static int
+docharmode()
+{
+#ifdef KLUDGELINEMODE
+ if (kludgelinemode)
+ send_do(TELOPT_SGA, 1);
+ else
+#endif
+ send_wont(TELOPT_LINEMODE, 1);
+ send_do(TELOPT_ECHO, 1);
+ return 1;
+}
+
+ static int
+dolmmode(bit, on)
+ int bit, on;
+{
+ unsigned char c;
+ extern int linemode;
+
+ if (my_want_state_is_wont(TELOPT_LINEMODE)) {
+ printf("?Need to have LINEMODE option enabled first.\n");
+ printf("'mode ?' for help.\n");
+ return 0;
+ }
+
+ if (on)
+ c = (linemode | bit);
+ else
+ c = (linemode & ~bit);
+ lm_mode(&c, 1, 1);
+ return 1;
+}
+
+ int
+setmode(bit)
+{
+ return dolmmode(bit, 1);
+}
+
+ int
+clearmode(bit)
+{
+ return dolmmode(bit, 0);
+}
+
+struct modelist {
+ char *name; /* command name */
+ char *help; /* help string */
+ int (*handler)(); /* routine which executes command */
+ int needconnect; /* Do we need to be connected to execute? */
+ int arg1;
+};
+
+extern int modehelp();
+
+static struct modelist ModeList[] = {
+ { "character", "Disable LINEMODE option", docharmode, 1 },
+#ifdef KLUDGELINEMODE
+ { "", "(or disable obsolete line-by-line mode)", 0 },
+#endif
+ { "line", "Enable LINEMODE option", dolinemode, 1 },
+#ifdef KLUDGELINEMODE
+ { "", "(or enable obsolete line-by-line mode)", 0 },
+#endif
+ { "", "", 0 },
+ { "", "These require the LINEMODE option to be enabled", 0 },
+ { "isig", "Enable signal trapping", setmode, 1, MODE_TRAPSIG },
+ { "+isig", 0, setmode, 1, MODE_TRAPSIG },
+ { "-isig", "Disable signal trapping", clearmode, 1, MODE_TRAPSIG },
+ { "edit", "Enable character editing", setmode, 1, MODE_EDIT },
+ { "+edit", 0, setmode, 1, MODE_EDIT },
+ { "-edit", "Disable character editing", clearmode, 1, MODE_EDIT },
+ { "softtabs", "Enable tab expansion", setmode, 1, MODE_SOFT_TAB },
+ { "+softtabs", 0, setmode, 1, MODE_SOFT_TAB },
+ { "-softtabs", "Disable character editing", clearmode, 1, MODE_SOFT_TAB },
+ { "litecho", "Enable literal character echo", setmode, 1, MODE_LIT_ECHO },
+ { "+litecho", 0, setmode, 1, MODE_LIT_ECHO },
+ { "-litecho", "Disable literal character echo", clearmode, 1, MODE_LIT_ECHO },
+ { "help", 0, modehelp, 0 },
+#ifdef KLUDGELINEMODE
+ { "kludgeline", 0, dokludgemode, 1 },
+#endif
+ { "", "", 0 },
+ { "?", "Print help information", modehelp, 0 },
+ { 0 },
+};
+
+
+ int
+modehelp()
+{
+ struct modelist *mt;
+
+ printf("format is: 'mode Mode', where 'Mode' is one of:\n\n");
+ for (mt = ModeList; mt->name; mt++) {
+ if (mt->help) {
+ if (*mt->help)
+ printf("%-15s %s\n", mt->name, mt->help);
+ else
+ printf("\n");
+ }
+ }
+ return 0;
+}
+
+#define GETMODECMD(name) (struct modelist *) \
+ genget(name, (char **) ModeList, sizeof(struct modelist))
+
+ static int
+modecmd(argc, argv)
+ int argc;
+ char *argv[];
+{
+ struct modelist *mt;
+
+ if (argc != 2) {
+ printf("'mode' command requires an argument\n");
+ printf("'mode ?' for help.\n");
+ } else if ((mt = GETMODECMD(argv[1])) == 0) {
+ fprintf(stderr, "Unknown mode '%s' ('mode ?' for help).\n", argv[1]);
+ } else if (Ambiguous(mt)) {
+ fprintf(stderr, "Ambiguous mode '%s' ('mode ?' for help).\n", argv[1]);
+ } else if (mt->needconnect && !connected) {
+ printf("?Need to be connected first.\n");
+ printf("'mode ?' for help.\n");
+ } else if (mt->handler) {
+ return (*mt->handler)(mt->arg1);
+ }
+ return 0;
+}
+\f
+/*
+ * The following data structures and routines implement the
+ * "display" command.
+ */
+
+ static int
+display(argc, argv)
+ int argc;
+ char *argv[];
+{
+ struct togglelist *tl;
+ struct setlist *sl;
+
+#define dotog(tl) if (tl->variable && tl->actionexplanation) { \
+ if (*tl->variable) { \
+ printf("will"); \
+ } else { \
+ printf("won't"); \
+ } \
+ printf(" %s.\n", tl->actionexplanation); \
+ }
+
+#define doset(sl) if (sl->name && *sl->name != ' ') { \
+ if (sl->handler == 0) \
+ printf("%-15s [%s]\n", sl->name, control(*sl->charp)); \
+ else \
+ printf("%-15s \"%s\"\n", sl->name, (char *)sl->charp); \
+ }
+
+ if (argc == 1) {
+ for (tl = Togglelist; tl->name; tl++) {
+ dotog(tl);
+ }
+ printf("\n");
+ for (sl = Setlist; sl->name; sl++) {
+ doset(sl);
+ }
+ } else {
+ int i;
+
+ for (i = 1; i < argc; i++) {
+ sl = getset(argv[i]);
+ tl = GETTOGGLE(argv[i]);
+ if (Ambiguous(sl) || Ambiguous(tl)) {
+ printf("?Ambiguous argument '%s'.\n", argv[i]);
+ return 0;
+ } else if (!sl && !tl) {
+ printf("?Unknown argument '%s'.\n", argv[i]);
+ return 0;
+ } else {
+ if (tl) {
+ dotog(tl);
+ }
+ if (sl) {
+ doset(sl);
+ }
+ }
+ }
+ }
+/*@*/optionstatus();
+#if defined(ENCRYPTION)
+ EncryptStatus();
+#endif
+ return 1;
+#undef doset
+#undef dotog
+}
+\f
+/*
+ * The following are the data structures, and many of the routines,
+ * relating to command processing.
+ */
+
+/*
+ * Set the escape character.
+ */
+ static int
+setescape(argc, argv)
+ int argc;
+ char *argv[];
+{
+ register char *arg;
+ char buf[50];
+
+ printf(
+ "Deprecated usage - please use 'set escape%s%s' in the future.\n",
+ (argc > 2)? " ":"", (argc > 2)? argv[1]: "");
+ if (argc > 2)
+ arg = argv[1];
+ else {
+ printf("new escape character: ");
+ (void) fgets(buf, sizeof(buf), stdin);
+ arg = buf;
+ }
+ if (arg[0] != '\0')
+ escape = arg[0];
+ if (!In3270) {
+ printf("Escape character is '%s'.\n", control(escape));
+ }
+ (void) fflush(stdout);
+ return 1;
+}
+
+ /*VARARGS*/
+ static int
+togcrmod()
+{
+ crmod = !crmod;
+ printf("Deprecated usage - please use 'toggle crmod' in the future.\n");
+ printf("%s map carriage return on output.\n", crmod ? "Will" : "Won't");
+ (void) fflush(stdout);
+ return 1;
+}
+
+ /*VARARGS*/
+ int
+suspend()
+{
+#ifdef SIGTSTP
+ setcommandmode();
+ {
+ long oldrows, oldcols, newrows, newcols, err;
+
+ err = (TerminalWindowSize(&oldrows, &oldcols) == 0) ? 1 : 0;
+ (void) kill(0, SIGTSTP);
+ /*
+ * If we didn't get the window size before the SUSPEND, but we
+ * can get them now (???), then send the NAWS to make sure that
+ * we are set up for the right window size.
+ */
+ if (TerminalWindowSize(&newrows, &newcols) && connected &&
+ (err || ((oldrows != newrows) || (oldcols != newcols)))) {
+ sendnaws();
+ }
+ }
+ /* reget parameters in case they were changed */
+ TerminalSaveState();
+ setconnmode(0);
+#else
+ printf("Suspend is not supported. Try the '!' command instead\n");
+#endif
+ return 1;
+}
+
+#if !defined(TN3270)
+ /*ARGSUSED*/
+ int
+shell(argc, argv)
+ int argc;
+ char *argv[];
+{
+ long oldrows, oldcols, newrows, newcols, err;
+
+ setcommandmode();
+
+ err = (TerminalWindowSize(&oldrows, &oldcols) == 0) ? 1 : 0;
+ switch(vfork()) {
+ case -1:
+ perror("Fork failed\n");
+ break;
+
+ case 0:
+ {
+ /*
+ * Fire up the shell in the child.
+ */
+ register char *shellp, *shellname;
+ extern char *rindex();
+
+ shellp = getenv("SHELL");
+ if (shellp == NULL)
+ shellp = "/bin/sh";
+ if ((shellname = rindex(shellp, '/')) == 0)
+ shellname = shellp;
+ else
+ shellname++;
+ if (argc > 1)
+ execl(shellp, shellname, "-c", &saveline[1], 0);
+ else
+ execl(shellp, shellname, 0);
+ perror("Execl");
+ _exit(1);
+ }
+ default:
+ (void)wait((int *)0); /* Wait for the shell to complete */
+
+ if (TerminalWindowSize(&newrows, &newcols) && connected &&
+ (err || ((oldrows != newrows) || (oldcols != newcols)))) {
+ sendnaws();
+ }
+ break;
+ }
+ return 1;
+}
+#endif /* !defined(TN3270) */
+
+ /*VARARGS*/
+ static
+bye(argc, argv)
+ int argc; /* Number of arguments */
+ char *argv[]; /* arguments */
+{
+ extern int resettermname;
+
+ if (connected) {
+ (void) shutdown(net, 2);
+ printf("Connection closed.\n");
+ (void) NetClose(net);
+ connected = 0;
+ resettermname = 1;
+#if defined(AUTHENTICATION) || defined(ENCRYPTION)
+ auth_encrypt_connect(connected);
+#endif
+ /* reset options */
+ tninit();
+#if defined(TN3270)
+ SetIn3270(); /* Get out of 3270 mode */
+#endif /* defined(TN3270) */
+ }
+ if ((argc != 2) || (strcmp(argv[1], "fromquit") != 0)) {
+ longjmp(toplevel, 1);
+ /* NOTREACHED */
+ }
+ return 1; /* Keep lint, etc., happy */
+}
+
+/*VARARGS*/
+quit()
+{
+ (void) call(bye, "bye", "fromquit", 0);
+ Exit(0);
+ /*NOTREACHED*/
+}
+
+/*VARARGS*/
+ int
+logout()
+{
+ send_do(TELOPT_LOGOUT, 1);
+ (void) netflush();
+ return 1;
+}
+
+\f
+/*
+ * The SLC command.
+ */
+
+struct slclist {
+ char *name;
+ char *help;
+ void (*handler)();
+ int arg;
+};
+
+static void slc_help();
+
+struct slclist SlcList[] = {
+ { "export", "Use local special character definitions",
+ slc_mode_export, 0 },
+ { "import", "Use remote special character definitions",
+ slc_mode_import, 1 },
+ { "check", "Verify remote special character definitions",
+ slc_mode_import, 0 },
+ { "help", 0, slc_help, 0 },
+ { "?", "Print help information", slc_help, 0 },
+ { 0 },
+};
+
+ static void
+slc_help()
+{
+ struct slclist *c;
+
+ for (c = SlcList; c->name; c++) {
+ if (c->help) {
+ if (*c->help)
+ printf("%-15s %s\n", c->name, c->help);
+ else
+ printf("\n");
+ }
+ }
+}
+
+ static struct slclist *
+getslc(name)
+ char *name;
+{
+ return (struct slclist *)
+ genget(name, (char **) SlcList, sizeof(struct slclist));
+}
+
+ static
+slccmd(argc, argv)
+ int argc;
+ char *argv[];
+{
+ struct slclist *c;
+
+ if (argc != 2) {
+ fprintf(stderr,
+ "Need an argument to 'slc' command. 'slc ?' for help.\n");
+ return 0;
+ }
+ c = getslc(argv[1]);
+ if (c == 0) {
+ fprintf(stderr, "'%s': unknown argument ('slc ?' for help).\n",
+ argv[1]);
+ return 0;
+ }
+ if (Ambiguous(c)) {
+ fprintf(stderr, "'%s': ambiguous argument ('slc ?' for help).\n",
+ argv[1]);
+ return 0;
+ }
+ (*c->handler)(c->arg);
+ slcstate();
+ return 1;
+}
+\f
+/*
+ * The ENVIRON command.
+ */
+
+struct envlist {
+ char *name;
+ char *help;
+ void (*handler)();
+ int narg;
+};
+
+extern struct env_lst *
+ env_define P((unsigned char *, unsigned char *));
+extern void
+ env_undefine P((unsigned char *)),
+ env_export P((unsigned char *)),
+ env_unexport P((unsigned char *)),
+ env_send P((unsigned char *)),
+ env_list P((void));
+static void
+ env_help P((void));
+
+struct envlist EnvList[] = {
+ { "define", "Define an environment variable",
+ (void (*)())env_define, 2 },
+ { "undefine", "Undefine an environment variable",
+ env_undefine, 1 },
+ { "export", "Mark an environment variable for automatic export",
+ env_export, 1 },
+ { "unexport", "Don't mark an environment variable for automatic export",
+ env_unexport, 1 },
+ { "send", "Send an environment variable", env_send, 1 },
+ { "list", "List the current environment variables",
+ env_list, 0 },
+ { "help", 0, env_help, 0 },
+ { "?", "Print help information", env_help, 0 },
+ { 0 },
+};
+
+ static void
+env_help()
+{
+ struct envlist *c;
+
+ for (c = EnvList; c->name; c++) {
+ if (c->help) {
+ if (*c->help)
+ printf("%-15s %s\n", c->name, c->help);
+ else
+ printf("\n");
+ }
+ }
+}
+
+ static struct envlist *
+getenvcmd(name)
+ char *name;
+{
+ return (struct envlist *)
+ genget(name, (char **) EnvList, sizeof(struct envlist));
+}
+
+env_cmd(argc, argv)
+ int argc;
+ char *argv[];
+{
+ struct envlist *c;
+
+ if (argc < 2) {
+ fprintf(stderr,
+ "Need an argument to 'environ' command. 'environ ?' for help.\n");
+ return 0;
+ }
+ c = getenvcmd(argv[1]);
+ if (c == 0) {
+ fprintf(stderr, "'%s': unknown argument ('environ ?' for help).\n",
+ argv[1]);
+ return 0;
+ }
+ if (Ambiguous(c)) {
+ fprintf(stderr, "'%s': ambiguous argument ('environ ?' for help).\n",
+ argv[1]);
+ return 0;
+ }
+ if (c->narg + 2 != argc) {
+ fprintf(stderr,
+ "Need %s%d argument%s to 'environ %s' command. 'environ ?' for help.\n",
+ c->narg < argc + 2 ? "only " : "",
+ c->narg, c->narg == 1 ? "" : "s", c->name);
+ return 0;
+ }
+ (*c->handler)(argv[2], argv[3]);
+ return 1;
+}
+
+struct env_lst {
+ struct env_lst *next; /* pointer to next structure */
+ struct env_lst *prev; /* pointer to previous structure */
+ unsigned char *var; /* pointer to variable name */
+ unsigned char *value; /* pointer to variable value */
+ int export; /* 1 -> export with default list of variables */
+ int welldefined; /* A well defined variable */
+};
+
+struct env_lst envlisthead;
+
+ struct env_lst *
+env_find(var)
+ unsigned char *var;
+{
+ register struct env_lst *ep;
+
+ for (ep = envlisthead.next; ep; ep = ep->next) {
+ if (strcmp((char *)ep->var, (char *)var) == 0)
+ return(ep);
+ }
+ return(NULL);
+}
+
+ void
+env_init()
+{
+ extern char **environ;
+ register char **epp, *cp;
+ register struct env_lst *ep;
+ extern char *index();
+
+ for (epp = environ; *epp; epp++) {
+ if (cp = index(*epp, '=')) {
+ *cp = '\0';
+ ep = env_define((unsigned char *)*epp,
+ (unsigned char *)cp+1);
+ ep->export = 0;
+ *cp = '=';
+ }
+ }
+ /*
+ * Special case for DISPLAY variable. If it is ":0.0" or
+ * "unix:0.0", we have to get rid of "unix" and insert our
+ * hostname.
+ */
+ if ((ep = env_find("DISPLAY"))
+ && ((*ep->value == ':')
+ || (strncmp((char *)ep->value, "unix:", 5) == 0))) {
+ char hbuf[256+1];
+ char *cp2 = index((char *)ep->value, ':');
+
+ gethostname(hbuf, 256);
+ hbuf[256] = '\0';
+ cp = (char *)malloc(strlen(hbuf) + strlen(cp2) + 1);
+ sprintf((char *)cp, "%s%s", hbuf, cp2);
+ free(ep->value);
+ ep->value = (unsigned char *)cp;
+ }
+ /*
+ * If USER is not defined, but LOGNAME is, then add
+ * USER with the value from LOGNAME. By default, we
+ * don't export the USER variable.
+ */
+ if ((env_find("USER") == NULL) && (ep = env_find("LOGNAME"))) {
+ env_define((unsigned char *)"USER", ep->value);
+ env_unexport((unsigned char *)"USER");
+ }
+ env_export((unsigned char *)"DISPLAY");
+ env_export((unsigned char *)"PRINTER");
+}
+
+ struct env_lst *
+env_define(var, value)
+ unsigned char *var, *value;
+{
+ register struct env_lst *ep;
+
+ if (ep = env_find(var)) {
+ if (ep->var)
+ free(ep->var);
+ if (ep->value)
+ free(ep->value);
+ } else {
+ ep = (struct env_lst *)malloc(sizeof(struct env_lst));
+ ep->next = envlisthead.next;
+ envlisthead.next = ep;
+ ep->prev = &envlisthead;
+ if (ep->next)
+ ep->next->prev = ep;
+ }
+ ep->welldefined = opt_welldefined(var);
+ ep->export = 1;
+ ep->var = (unsigned char *)strdup((char *)var);
+ ep->value = (unsigned char *)strdup((char *)value);
+ return(ep);
+}
+
+ void
+env_undefine(var)
+ unsigned char *var;
+{
+ register struct env_lst *ep;
+
+ if (ep = env_find(var)) {
+ ep->prev->next = ep->next;
+ if (ep->next)
+ ep->next->prev = ep->prev;
+ if (ep->var)
+ free(ep->var);
+ if (ep->value)
+ free(ep->value);
+ free(ep);
+ }
+}
+
+ void
+env_export(var)
+ unsigned char *var;
+{
+ register struct env_lst *ep;
+
+ if (ep = env_find(var))
+ ep->export = 1;
+}
+
+ void
+env_unexport(var)
+ unsigned char *var;
+{
+ register struct env_lst *ep;
+
+ if (ep = env_find(var))
+ ep->export = 0;
+}
+
+ void
+env_send(var)
+ unsigned char *var;
+{
+ register struct env_lst *ep;
+
+ if (my_state_is_wont(TELOPT_ENVIRON)) {
+ fprintf(stderr,
+ "Cannot send '%s': Telnet ENVIRON option not enabled\n",
+ var);
+ return;
+ }
+ ep = env_find(var);
+ if (ep == 0) {
+ fprintf(stderr, "Cannot send '%s': variable not defined\n",
+ var);
+ return;
+ }
+ env_opt_start_info();
+ env_opt_add(ep->var);
+ env_opt_end(0);
+}
+
+ void
+env_list()
+{
+ register struct env_lst *ep;
+
+ for (ep = envlisthead.next; ep; ep = ep->next) {
+ printf("%c %-20s %s\n", ep->export ? '*' : ' ',
+ ep->var, ep->value);
+ }
+}
+
+ unsigned char *
+env_default(init, welldefined)
+ int init;
+{
+ static struct env_lst *nep = NULL;
+
+ if (init) {
+ nep = &envlisthead;
+ return;
+ }
+ if (nep) {
+ while (nep = nep->next) {
+ if (nep->export && (nep->welldefined == welldefined))
+ return(nep->var);
+ }
+ }
+ return(NULL);
+}
+
+ unsigned char *
+env_getvalue(var)
+ unsigned char *var;
+{
+ register struct env_lst *ep;
+
+ if (ep = env_find(var))
+ return(ep->value);
+ return(NULL);
+}
+
+#if defined(AUTHENTICATION)
+/*
+ * The AUTHENTICATE command.
+ */
+
+struct authlist {
+ char *name;
+ char *help;
+ int (*handler)();
+ int narg;
+};
+
+extern int
+ auth_enable P((int)),
+ auth_disable P((int)),
+ auth_status P((void));
+static int
+ auth_help P((void));
+
+struct authlist AuthList[] = {
+ { "status", "Display current status of authentication information",
+ auth_status, 0 },
+ { "disable", "Disable an authentication type ('auth disable ?' for more)",
+ auth_disable, 1 },
+ { "enable", "Enable an authentication type ('auth enable ?' for more)",
+ auth_enable, 1 },
+ { "help", 0, auth_help, 0 },
+ { "?", "Print help information", auth_help, 0 },
+ { 0 },
+};
+
+ static int
+auth_help()
+{
+ struct authlist *c;
+
+ for (c = AuthList; c->name; c++) {
+ if (c->help) {
+ if (*c->help)
+ printf("%-15s %s\n", c->name, c->help);
+ else
+ printf("\n");
+ }
+ }
+ return 0;
+}
+
+auth_cmd(argc, argv)
+ int argc;
+ char *argv[];
+{
+ struct authlist *c;
+
+ c = (struct authlist *)
+ genget(argv[1], (char **) AuthList, sizeof(struct authlist));
+ if (c == 0) {
+ fprintf(stderr, "'%s': unknown argument ('auth ?' for help).\n",
+ argv[1]);
+ return 0;
+ }
+ if (Ambiguous(c)) {
+ fprintf(stderr, "'%s': ambiguous argument ('auth ?' for help).\n",
+ argv[1]);
+ return 0;
+ }
+ if (c->narg + 2 != argc) {
+ fprintf(stderr,
+ "Need %s%d argument%s to 'auth %s' command. 'auth ?' for help.\n",
+ c->narg < argc + 2 ? "only " : "",
+ c->narg, c->narg == 1 ? "" : "s", c->name);
+ return 0;
+ }
+ return((*c->handler)(argv[2], argv[3]));
+}
+#endif
+
+#if defined(ENCRYPTION)
+/*
+ * The ENCRYPT command.
+ */
+
+struct encryptlist {
+ char *name;
+ char *help;
+ int (*handler)();
+ int needconnect;
+ int minarg;
+ int maxarg;
+};
+
+extern int
+ EncryptEnable P((char *, char *)),
+ EncryptDisable P((char *, char *)),
+ EncryptType P((char *, char *)),
+ EncryptStart P((char *)),
+ EncryptStartInput P((void)),
+ EncryptStartOutput P((void)),
+ EncryptStop P((char *)),
+ EncryptStopInput P((void)),
+ EncryptStopOutput P((void)),
+ EncryptStatus P((void));
+static int
+ EncryptHelp P((void));
+
+struct encryptlist EncryptList[] = {
+ { "enable", "Enable encryption. ('encrypt enable ?' for more)",
+ EncryptEnable, 1, 1, 2 },
+ { "disable", "Disable encryption. ('encrypt enable ?' for more)",
+ EncryptDisable, 0, 1, 2 },
+ { "type", "Set encryptiong type. ('encrypt type ?' for more)",
+ EncryptType, 0, 1, 1 },
+ { "start", "Start encryption. ('encrypt start ?' for more)",
+ EncryptStart, 1, 0, 1 },
+ { "stop", "Stop encryption. ('encrypt stop ?' for more)",
+ EncryptStop, 1, 0, 1 },
+ { "input", "Start encrypting the input stream",
+ EncryptStartInput, 1, 0, 0 },
+ { "-input", "Stop encrypting the input stream",
+ EncryptStopInput, 1, 0, 0 },
+ { "output", "Start encrypting the output stream",
+ EncryptStartOutput, 1, 0, 0 },
+ { "-output", "Stop encrypting the output stream",
+ EncryptStopOutput, 1, 0, 0 },
+
+ { "status", "Display current status of authentication information",
+ EncryptStatus, 0, 0, 0 },
+ { "help", 0, EncryptHelp, 0, 0, 0 },
+ { "?", "Print help information", EncryptHelp, 0, 0, 0 },
+ { 0 },
+};
+
+ static int
+EncryptHelp()
+{
+ struct encryptlist *c;
+
+ for (c = EncryptList; c->name; c++) {
+ if (c->help) {
+ if (*c->help)
+ printf("%-15s %s\n", c->name, c->help);
+ else
+ printf("\n");
+ }
+ }
+ return 0;
+}
+
+encrypt_cmd(argc, argv)
+ int argc;
+ char *argv[];
+{
+ struct encryptlist *c;
+
+ c = (struct encryptlist *)
+ genget(argv[1], (char **) EncryptList, sizeof(struct encryptlist));
+ if (c == 0) {
+ fprintf(stderr, "'%s': unknown argument ('encrypt ?' for help).\n",
+ argv[1]);
+ return 0;
+ }
+ if (Ambiguous(c)) {
+ fprintf(stderr, "'%s': ambiguous argument ('encrypt ?' for help).\n",
+ argv[1]);
+ return 0;
+ }
+ argc -= 2;
+ if (argc < c->minarg || argc > c->maxarg) {
+ if (c->minarg == c->maxarg) {
+ fprintf(stderr, "Need %s%d argument%s ",
+ c->minarg < argc ? "only " : "", c->minarg,
+ c->minarg == 1 ? "" : "s");
+ } else {
+ fprintf(stderr, "Need %s%d-%d arguments ",
+ c->maxarg < argc ? "only " : "", c->minarg, c->maxarg);
+ }
+ fprintf(stderr, "to 'encrypt %s' command. 'encrypt ?' for help.\n",
+ c->name);
+ return 0;
+ }
+ if (c->needconnect && !connected) {
+ if (!(argc && (isprefix(argv[2], "help") || isprefix(argv[2], "?")))) {
+ printf("?Need to be connected first.\n");
+ return 0;
+ }
+ }
+ return ((*c->handler)(argc > 0 ? argv[2] : 0,
+ argc > 1 ? argv[3] : 0,
+ argc > 2 ? argv[4] : 0));
+}
+#endif
+
+#if defined(unix) && defined(TN3270)
+ static void
+filestuff(fd)
+ int fd;
+{
+ int res;
+
+#ifdef F_GETOWN
+ setconnmode(0);
+ res = fcntl(fd, F_GETOWN, 0);
+ setcommandmode();
+
+ if (res == -1) {
+ perror("fcntl");
+ return;
+ }
+ printf("\tOwner is %d.\n", res);
+#endif
+
+ setconnmode(0);
+ res = fcntl(fd, F_GETFL, 0);
+ setcommandmode();
+
+ if (res == -1) {
+ perror("fcntl");
+ return;
+ }
+ printf("\tFlags are 0x%x: %s\n", res, decodeflags(res));
+}
+#endif /* defined(unix) && defined(TN3270) */
+
+/*
+ * Print status about the connection.
+ */
+ /*ARGSUSED*/
+ static
+status(argc, argv)
+ int argc;
+ char *argv[];
+{
+ if (connected) {
+ printf("Connected to %s.\n", hostname);
+ if ((argc < 2) || strcmp(argv[1], "notmuch")) {
+ int mode = getconnmode();
+
+ if (my_want_state_is_will(TELOPT_LINEMODE)) {
+ printf("Operating with LINEMODE option\n");
+ printf("%s line editing\n", (mode&MODE_EDIT) ? "Local" : "No");
+ printf("%s catching of signals\n",
+ (mode&MODE_TRAPSIG) ? "Local" : "No");
+ slcstate();
+#ifdef KLUDGELINEMODE
+ } else if (kludgelinemode && my_want_state_is_dont(TELOPT_SGA)) {
+ printf("Operating in obsolete linemode\n");
+#endif
+ } else {
+ printf("Operating in single character mode\n");
+ if (localchars)
+ printf("Catching signals locally\n");
+ }
+ printf("%s character echo\n", (mode&MODE_ECHO) ? "Local" : "Remote");
+ if (my_want_state_is_will(TELOPT_LFLOW))
+ printf("%s flow control\n", (mode&MODE_FLOW) ? "Local" : "No");
+#if defined(ENCRYPTION)
+ encrypt_display();
+#endif
+ }
+ } else {
+ printf("No connection.\n");
+ }
+# if !defined(TN3270)
+ printf("Escape character is '%s'.\n", control(escape));
+ (void) fflush(stdout);
+# else /* !defined(TN3270) */
+ if ((!In3270) && ((argc < 2) || strcmp(argv[1], "notmuch"))) {
+ printf("Escape character is '%s'.\n", control(escape));
+ }
+# if defined(unix)
+ if ((argc >= 2) && !strcmp(argv[1], "everything")) {
+ printf("SIGIO received %d time%s.\n",
+ sigiocount, (sigiocount == 1)? "":"s");
+ if (In3270) {
+ printf("Process ID %d, process group %d.\n",
+ getpid(), getpgrp(getpid()));
+ printf("Terminal input:\n");
+ filestuff(tin);
+ printf("Terminal output:\n");
+ filestuff(tout);
+ printf("Network socket:\n");
+ filestuff(net);
+ }
+ }
+ if (In3270 && transcom) {
+ printf("Transparent mode command is '%s'.\n", transcom);
+ }
+# endif /* defined(unix) */
+ (void) fflush(stdout);
+ if (In3270) {
+ return 0;
+ }
+# endif /* defined(TN3270) */
+ return 1;
+}
+
+#ifdef SIGINFO
+/*
+ * Function that gets called when SIGINFO is received.
+ */
+ayt_status()
+{
+ (void) call(status, "status", "notmuch", 0);
+}
+#endif
+
+ int
+tn(argc, argv)
+ int argc;
+ char *argv[];
+{
+ register struct hostent *host = 0;
+ struct sockaddr_in sin;
+ struct servent *sp = 0;
+ unsigned long temp, inet_addr();
+ extern char *inet_ntoa();
+#if defined(IP_OPTIONS) && defined(IPPROTO_IP)
+ char *srp = 0, *strrchr();
+ unsigned long sourceroute(), srlen;
+#endif
+ char *cmd, *hostp = 0, *portp = 0, *user = 0;
+
+ /* clear the socket address prior to use */
+ bzero((char *)&sin, sizeof(sin));
+
+ if (connected) {
+ printf("?Already connected to %s\n", hostname);
+ setuid(getuid());
+ return 0;
+ }
+ if (argc < 2) {
+ (void) strcpy(line, "open ");
+ printf("(to) ");
+ (void) fgets(&line[strlen(line)], sizeof(line) - strlen(line), stdin);
+ makeargv();
+ argc = margc;
+ argv = margv;
+ }
+ cmd = *argv;
+ --argc; ++argv;
+ while (argc) {
+ if (isprefix(*argv, "help") || isprefix(*argv, "?"))
+ goto usage;
+ if (strcmp(*argv, "-l") == 0) {
+ --argc; ++argv;
+ if (argc == 0)
+ goto usage;
+ user = *argv++;
+ --argc;
+ continue;
+ }
+ if (strcmp(*argv, "-a") == 0) {
+ --argc; ++argv;
+ autologin = 1;
+ continue;
+ }
+ if (hostp == 0) {
+ hostp = *argv++;
+ --argc;
+ continue;
+ }
+ if (portp == 0) {
+ portp = *argv++;
+ --argc;
+ continue;
+ }
+ usage:
+ printf("usage: %s [-l user] [-a] host-name [port]\n", cmd);
+ setuid(getuid());
+ return 0;
+ }
+ if (hostp == 0)
+ goto usage;
+
+#if defined(IP_OPTIONS) && defined(IPPROTO_IP)
+ if (hostp[0] == '@' || hostp[0] == '!') {
+ if ((hostname = strrchr(hostp, ':')) == NULL)
+ hostname = strrchr(hostp, '@');
+ hostname++;
+ srp = 0;
+ temp = sourceroute(hostp, &srp, &srlen);
+ if (temp == 0) {
+ herror(srp);
+ setuid(getuid());
+ return 0;
+ } else if (temp == -1) {
+ printf("Bad source route option: %s\n", hostp);
+ setuid(getuid());
+ return 0;
+ } else {
+ sin.sin_addr.s_addr = temp;
+ sin.sin_family = AF_INET;
+ }
+ } else {
+#endif
+ temp = inet_addr(hostp);
+ if (temp != (unsigned long) -1) {
+ sin.sin_addr.s_addr = temp;
+ sin.sin_family = AF_INET;
+ (void) strcpy(_hostname, hostp);
+ hostname = _hostname;
+ } else {
+ host = gethostbyname(hostp);
+ if (host) {
+ sin.sin_family = host->h_addrtype;
+#if defined(h_addr) /* In 4.3, this is a #define */
+ memcpy((caddr_t)&sin.sin_addr,
+ host->h_addr_list[0], host->h_length);
+#else /* defined(h_addr) */
+ memcpy((caddr_t)&sin.sin_addr, host->h_addr, host->h_length);
+#endif /* defined(h_addr) */
+ strncpy(_hostname, host->h_name, sizeof(_hostname));
+ _hostname[sizeof(_hostname)-1] = '\0';
+ hostname = _hostname;
+ } else {
+ herror(hostp);
+ setuid(getuid());
+ return 0;
+ }
+ }
+#if defined(IP_OPTIONS) && defined(IPPROTO_IP)
+ }
+#endif
+ if (portp) {
+ if (*portp == '-') {
+ portp++;
+ telnetport = 1;
+ } else
+ telnetport = 0;
+ sin.sin_port = atoi(portp);
+ if (sin.sin_port == 0) {
+ sp = getservbyname(portp, "tcp");
+ if (sp)
+ sin.sin_port = sp->s_port;
+ else {
+ printf("%s: bad port number\n", portp);
+ setuid(getuid());
+ return 0;
+ }
+ } else {
+#if !defined(htons)
+ u_short htons();
+#endif /* !defined(htons) */
+ sin.sin_port = htons(sin.sin_port);
+ }
+ } else {
+ if (sp == 0) {
+ sp = getservbyname("telnet", "tcp");
+ if (sp == 0) {
+ fprintf(stderr, "telnet: tcp/telnet: unknown service\n");
+ setuid(getuid());
+ return 0;
+ }
+ sin.sin_port = sp->s_port;
+ }
+ telnetport = 1;
+ }
+ printf("Trying %s...\n", inet_ntoa(sin.sin_addr));
+ do {
+ net = socket(AF_INET, SOCK_STREAM, 0);
+ setuid(getuid());
+ if (net < 0) {
+ perror("telnet: socket");
+ return 0;
+ }
+#if defined(IP_OPTIONS) && defined(IPPROTO_IP)
+ if (srp && setsockopt(net, IPPROTO_IP, IP_OPTIONS, (char *)srp, srlen) < 0)
+ perror("setsockopt (IP_OPTIONS)");
+#endif
+#if defined(IPPROTO_IP) && defined(IP_TOS)
+ {
+# if defined(HAS_GETTOS)
+ struct tosent *tp;
+ if (tos < 0 && (tp = gettosbyname("telnet", "tcp")))
+ tos = tp->t_tos;
+# endif
+ if (tos < 0)
+ tos = 020; /* Low Delay bit */
+ if (tos
+ && (setsockopt(net, IPPROTO_IP, IP_TOS,
+ (char *)&tos, sizeof(int)) < 0)
+ && (errno != ENOPROTOOPT))
+ perror("telnet: setsockopt (IP_TOS) (ignored)");
+ }
+#endif /* defined(IPPROTO_IP) && defined(IP_TOS) */
+
+ if (debug && SetSockOpt(net, SOL_SOCKET, SO_DEBUG, 1) < 0) {
+ perror("setsockopt (SO_DEBUG)");
+ }
+
+ if (connect(net, (struct sockaddr *)&sin, sizeof (sin)) < 0) {
+#if defined(h_addr) /* In 4.3, this is a #define */
+ if (host && host->h_addr_list[1]) {
+ int oerrno = errno;
+
+ fprintf(stderr, "telnet: connect to address %s: ",
+ inet_ntoa(sin.sin_addr));
+ errno = oerrno;
+ perror((char *)0);
+ host->h_addr_list++;
+ memcpy((caddr_t)&sin.sin_addr,
+ host->h_addr_list[0], host->h_length);
+ (void) NetClose(net);
+ continue;
+ }
+#endif /* defined(h_addr) */
+ perror("telnet: Unable to connect to remote host");
+ return 0;
+ }
+ connected++;
+#if defined(AUTHENTICATION) || defined(ENCRYPTION)
+ auth_encrypt_connect(connected);
+#endif
+ } while (connected == 0);
+ cmdrc(hostp, hostname);
+ if (autologin && user == NULL) {
+ struct passwd *pw;
+
+ user = getenv("USER");
+ if (user == NULL ||
+ (pw = getpwnam(user)) && pw->pw_uid != getuid()) {
+ if (pw = getpwuid(getuid()))
+ user = pw->pw_name;
+ else
+ user = NULL;
+ }
+ }
+ if (user) {
+ env_define((unsigned char *)"USER", (unsigned char *)user);
+ env_export((unsigned char *)"USER");
+ }
+ (void) call(status, "status", "notmuch", 0);
+ if (setjmp(peerdied) == 0)
+ telnet(user);
+ (void) NetClose(net);
+ ExitString("Connection closed by foreign host.\n",1);
+ /*NOTREACHED*/
+}
+
+#define HELPINDENT (sizeof ("connect"))
+
+static char
+ openhelp[] = "connect to a site",
+ closehelp[] = "close current connection",
+ logouthelp[] = "forcibly logout remote user and close the connection",
+ quithelp[] = "exit telnet",
+ statushelp[] = "print status information",
+ helphelp[] = "print help information",
+ sendhelp[] = "transmit special characters ('send ?' for more)",
+ sethelp[] = "set operating parameters ('set ?' for more)",
+ unsethelp[] = "unset operating parameters ('unset ?' for more)",
+ togglestring[] ="toggle operating parameters ('toggle ?' for more)",
+ slchelp[] = "change state of special charaters ('slc ?' for more)",
+ displayhelp[] = "display operating parameters",
+#if defined(TN3270) && defined(unix)
+ transcomhelp[] = "specify Unix command for transparent mode pipe",
+#endif /* defined(TN3270) && defined(unix) */
+#if defined(AUTHENTICATION)
+ authhelp[] = "turn on (off) authentication ('auth ?' for more)",
+#endif
+#if defined(ENCRYPTION)
+ encrypthelp[] = "turn on (off) encryption ('encrypt ?' for more)",
+#endif
+#if defined(unix)
+ zhelp[] = "suspend telnet",
+#endif /* defined(unix) */
+ shellhelp[] = "invoke a subshell",
+ envhelp[] = "change environment variables ('environ ?' for more)",
+ modestring[] = "try to enter line or character mode ('mode ?' for more)";
+
+static int help();
+
+static Command cmdtab[] = {
+ { "close", closehelp, bye, 1 },
+ { "logout", logouthelp, logout, 1 },
+ { "display", displayhelp, display, 0 },
+ { "mode", modestring, modecmd, 0 },
+ { "open", openhelp, tn, 0 },
+ { "quit", quithelp, quit, 0 },
+ { "send", sendhelp, sendcmd, 0 },
+ { "set", sethelp, setcmd, 0 },
+ { "unset", unsethelp, unsetcmd, 0 },
+ { "status", statushelp, status, 0 },
+ { "toggle", togglestring, toggle, 0 },
+ { "slc", slchelp, slccmd, 0 },
+#if defined(TN3270) && defined(unix)
+ { "transcom", transcomhelp, settranscom, 0 },
+#endif /* defined(TN3270) && defined(unix) */
+#if defined(AUTHENTICATION)
+ { "auth", authhelp, auth_cmd, 0 },
+#endif
+#if defined(ENCRYPTION)
+ { "encrypt", encrypthelp, encrypt_cmd, 0 },
+#endif
+#if defined(unix)
+ { "z", zhelp, suspend, 0 },
+#endif /* defined(unix) */
+#if defined(TN3270)
+ { "!", shellhelp, shell, 1 },
+#else
+ { "!", shellhelp, shell, 0 },
+#endif
+ { "environ", envhelp, env_cmd, 0 },
+ { "?", helphelp, help, 0 },
+ 0
+};
+
+static char crmodhelp[] = "deprecated command -- use 'toggle crmod' instead";
+static char escapehelp[] = "deprecated command -- use 'set escape' instead";
+
+static Command cmdtab2[] = {
+ { "help", 0, help, 0 },
+ { "escape", escapehelp, setescape, 0 },
+ { "crmod", crmodhelp, togcrmod, 0 },
+ 0
+};
+
+
+/*
+ * Call routine with argc, argv set from args (terminated by 0).
+ */
+
+ /*VARARGS1*/
+ static
+call(va_alist)
+ va_dcl
+{
+ va_list ap;
+ typedef int (*intrtn_t)();
+ intrtn_t routine;
+ char *args[100];
+ int argno = 0;
+
+ va_start(ap);
+ routine = (va_arg(ap, intrtn_t));
+ while ((args[argno++] = va_arg(ap, char *)) != 0) {
+ ;
+ }
+ va_end(ap);
+ return (*routine)(argno-1, args);
+}
+
+
+ static Command *
+getcmd(name)
+ char *name;
+{
+ Command *cm;
+
+ if (cm = (Command *) genget(name, (char **) cmdtab, sizeof(Command)))
+ return cm;
+ return (Command *) genget(name, (char **) cmdtab2, sizeof(Command));
+}
+
+ void
+command(top, tbuf, cnt)
+ int top;
+ char *tbuf;
+ int cnt;
+{
+ register Command *c;
+
+ setcommandmode();
+ if (!top) {
+ putchar('\n');
+#if defined(unix)
+ } else {
+ (void) signal(SIGINT, SIG_DFL);
+ (void) signal(SIGQUIT, SIG_DFL);
+#endif /* defined(unix) */
+ }
+ for (;;) {
+ if (rlogin == _POSIX_VDISABLE)
+ printf("%s> ", prompt);
+ if (tbuf) {
+ register char *cp;
+ cp = line;
+ while (cnt > 0 && (*cp++ = *tbuf++) != '\n')
+ cnt--;
+ tbuf = 0;
+ if (cp == line || *--cp != '\n' || cp == line)
+ goto getline;
+ *cp = '\0';
+ if (rlogin == _POSIX_VDISABLE)
+ printf("%s\n", line);
+ } else {
+ getline:
+ if (rlogin != _POSIX_VDISABLE)
+ printf("%s> ", prompt);
+ if (fgets(line, sizeof(line), stdin) == NULL) {
+ if (feof(stdin) || ferror(stdin)) {
+ (void) quit();
+ /*NOTREACHED*/
+ }
+ break;
+ }
+ }
+ if (line[0] == 0)
+ break;
+ makeargv();
+ if (margv[0] == 0) {
+ break;
+ }
+ c = getcmd(margv[0]);
+ if (Ambiguous(c)) {
+ printf("?Ambiguous command\n");
+ continue;
+ }
+ if (c == 0) {
+ printf("?Invalid command\n");
+ continue;
+ }
+ if (c->needconnect && !connected) {
+ printf("?Need to be connected first.\n");
+ continue;
+ }
+ if ((*c->handler)(margc, margv)) {
+ break;
+ }
+ }
+ if (!top) {
+ if (!connected) {
+ longjmp(toplevel, 1);
+ /*NOTREACHED*/
+ }
+#if defined(TN3270)
+ if (shell_active == 0) {
+ setconnmode(0);
+ }
+#else /* defined(TN3270) */
+ setconnmode(0);
+#endif /* defined(TN3270) */
+ }
+}
+\f
+/*
+ * Help command.
+ */
+ static
+help(argc, argv)
+ int argc;
+ char *argv[];
+{
+ register Command *c;
+
+ if (argc == 1) {
+ printf("Commands may be abbreviated. Commands are:\n\n");
+ for (c = cmdtab; c->name; c++)
+ if (c->help) {
+ printf("%-*s\t%s\n", HELPINDENT, c->name,
+ c->help);
+ }
+ return 0;
+ }
+ while (--argc > 0) {
+ register char *arg;
+ arg = *++argv;
+ c = getcmd(arg);
+ if (Ambiguous(c))
+ printf("?Ambiguous help command %s\n", arg);
+ else if (c == (Command *)0)
+ printf("?Invalid help command %s\n", arg);
+ else
+ printf("%s\n", c->help);
+ }
+ return 0;
+}
+
+static char *rcname = 0;
+static char rcbuf[128];
+
+cmdrc(m1, m2)
+ char *m1, *m2;
+{
+ register Command *c;
+ FILE *rcfile;
+ int gotmachine = 0;
+ int l1 = strlen(m1);
+ int l2 = strlen(m2);
+ char m1save[64];
+
+ if (skiprc)
+ return;
+
+ strcpy(m1save, m1);
+ m1 = m1save;
+
+ if (rcname == 0) {
+ rcname = getenv("HOME");
+ if (rcname)
+ strcpy(rcbuf, rcname);
+ else
+ rcbuf[0] = '\0';
+ strcat(rcbuf, "/.telnetrc");
+ rcname = rcbuf;
+ }
+
+ if ((rcfile = fopen(rcname, "r")) == 0) {
+ return;
+ }
+
+ for (;;) {
+ if (fgets(line, sizeof(line), rcfile) == NULL)
+ break;
+ if (line[0] == 0)
+ break;
+ if (line[0] == '#')
+ continue;
+ if (gotmachine) {
+ if (!isspace(line[0]))
+ gotmachine = 0;
+ }
+ if (gotmachine == 0) {
+ if (isspace(line[0]))
+ continue;
+ if (strncasecmp(line, m1, l1) == 0)
+ strncpy(line, &line[l1], sizeof(line) - l1);
+ else if (strncasecmp(line, m2, l2) == 0)
+ strncpy(line, &line[l2], sizeof(line) - l2);
+ else if (strncasecmp(line, "DEFAULT", 7) == 0)
+ strncpy(line, &line[7], sizeof(line) - 7);
+ else
+ continue;
+ if (line[0] != ' ' && line[0] != '\t' && line[0] != '\n')
+ continue;
+ gotmachine = 1;
+ }
+ makeargv();
+ if (margv[0] == 0)
+ continue;
+ c = getcmd(margv[0]);
+ if (Ambiguous(c)) {
+ printf("?Ambiguous command: %s\n", margv[0]);
+ continue;
+ }
+ if (c == 0) {
+ printf("?Invalid command: %s\n", margv[0]);
+ continue;
+ }
+ /*
+ * This should never happen...
+ */
+ if (c->needconnect && !connected) {
+ printf("?Need to be connected first for %s.\n", margv[0]);
+ continue;
+ }
+ (*c->handler)(margc, margv);
+ }
+ fclose(rcfile);
+}
+
+#if defined(IP_OPTIONS) && defined(IPPROTO_IP)
+
+/*
+ * Source route is handed in as
+ * [!]@hop1@hop2...[@|:]dst
+ * If the leading ! is present, it is a
+ * strict source route, otherwise it is
+ * assmed to be a loose source route.
+ *
+ * We fill in the source route option as
+ * hop1,hop2,hop3...dest
+ * and return a pointer to hop1, which will
+ * be the address to connect() to.
+ *
+ * Arguments:
+ * arg: pointer to route list to decipher
+ *
+ * cpp: If *cpp is not equal to NULL, this is a
+ * pointer to a pointer to a character array
+ * that should be filled in with the option.
+ *
+ * lenp: pointer to an integer that contains the
+ * length of *cpp if *cpp != NULL.
+ *
+ * Return values:
+ *
+ * Returns the address of the host to connect to. If the
+ * return value is -1, there was a syntax error in the
+ * option, either unknown characters, or too many hosts.
+ * If the return value is 0, one of the hostnames in the
+ * path is unknown, and *cpp is set to point to the bad
+ * hostname.
+ *
+ * *cpp: If *cpp was equal to NULL, it will be filled
+ * in with a pointer to our static area that has
+ * the option filled in. This will be 32bit aligned.
+ *
+ * *lenp: This will be filled in with how long the option
+ * pointed to by *cpp is.
+ *
+ */
+ unsigned long
+sourceroute(arg, cpp, lenp)
+ char *arg;
+ char **cpp;
+ int *lenp;
+{
+ static char lsr[44];
+#ifdef sysV88
+ static IOPTN ipopt;
+#endif
+ char *cp, *cp2, *lsrp, *lsrep;
+ register int tmp;
+ struct in_addr sin_addr;
+ register struct hostent *host = 0;
+ register char c;
+
+ /*
+ * Verify the arguments, and make sure we have
+ * at least 7 bytes for the option.
+ */
+ if (cpp == NULL || lenp == NULL)
+ return((unsigned long)-1);
+ if (*cpp != NULL && *lenp < 7)
+ return((unsigned long)-1);
+ /*
+ * Decide whether we have a buffer passed to us,
+ * or if we need to use our own static buffer.
+ */
+ if (*cpp) {
+ lsrp = *cpp;
+ lsrep = lsrp + *lenp;
+ } else {
+ *cpp = lsrp = lsr;
+ lsrep = lsrp + 44;
+ }
+
+ cp = arg;
+
+ /*
+ * Next, decide whether we have a loose source
+ * route or a strict source route, and fill in
+ * the begining of the option.
+ */
+#ifndef sysV88
+ if (*cp == '!') {
+ cp++;
+ *lsrp++ = IPOPT_SSRR;
+ } else
+ *lsrp++ = IPOPT_LSRR;
+#else
+ if (*cp == '!') {
+ cp++;
+ ipopt.io_type = IPOPT_SSRR;
+ } else
+ ipopt.io_type = IPOPT_LSRR;
+#endif
+
+ if (*cp != '@')
+ return((unsigned long)-1);
+
+#ifndef sysV88
+ lsrp++; /* skip over length, we'll fill it in later */
+ *lsrp++ = 4;
+#endif
+
+ cp++;
+
+ sin_addr.s_addr = 0;
+
+ for (c = 0;;) {
+ if (c == ':')
+ cp2 = 0;
+ else for (cp2 = cp; c = *cp2; cp2++) {
+ if (c == ',') {
+ *cp2++ = '\0';
+ if (*cp2 == '@')
+ cp2++;
+ } else if (c == '@') {
+ *cp2++ = '\0';
+ } else if (c == ':') {
+ *cp2++ = '\0';
+ } else
+ continue;
+ break;
+ }
+ if (!c)
+ cp2 = 0;
+
+ if ((tmp = inet_addr(cp)) != -1) {
+ sin_addr.s_addr = tmp;
+ } else if (host = gethostbyname(cp)) {
+#if defined(h_addr)
+ memcpy((caddr_t)&sin_addr,
+ host->h_addr_list[0], host->h_length);
+#else
+ memcpy((caddr_t)&sin_addr, host->h_addr, host->h_length);
+#endif
+ } else {
+ *cpp = cp;
+ return(0);
+ }
+ memcpy(lsrp, (char *)&sin_addr, 4);
+ lsrp += 4;
+ if (cp2)
+ cp = cp2;
+ else
+ break;
+ /*
+ * Check to make sure there is space for next address
+ */
+ if (lsrp + 4 > lsrep)
+ return((unsigned long)-1);
+ }
+#ifndef sysV88
+ if ((*(*cpp+IPOPT_OLEN) = lsrp - *cpp) <= 7) {
+ *cpp = 0;
+ *lenp = 0;
+ return((unsigned long)-1);
+ }
+ *lsrp++ = IPOPT_NOP; /* 32 bit word align it */
+ *lenp = lsrp - *cpp;
+#else
+ ipopt.io_len = lsrp - *cpp;
+ if (ipopt.io_len <= 5) { /* Is 3 better ? */
+ *cpp = 0;
+ *lenp = 0;
+ return((unsigned long)-1);
+ }
+ *lenp = sizeof(ipopt);
+ *cpp = (char *) &ipopt;
+#endif
+ return(sin_addr.s_addr);
+}
+#endif
--- /dev/null
+/*
+ * Copyright (c) 1988 Regents of the University of California.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * @(#)defines.h 5.1 (Berkeley) 9/14/90
+ */
+
+#define settimer(x) clocks.x = clocks.system++
+
+#if !defined(TN3270)
+
+#define SetIn3270()
+
+#endif /* !defined(TN3270) */
+
+#define NETADD(c) { *netoring.supply = c; ring_supplied(&netoring, 1); }
+#define NET2ADD(c1,c2) { NETADD(c1); NETADD(c2); }
+#define NETBYTES() (ring_full_count(&netoring))
+#define NETROOM() (ring_empty_count(&netoring))
+
+#define TTYADD(c) if (!(SYNCHing||flushout)) { \
+ *ttyoring.supply = c; \
+ ring_supplied(&ttyoring, 1); \
+ }
+#define TTYBYTES() (ring_full_count(&ttyoring))
+#define TTYROOM() (ring_empty_count(&ttyoring))
+
+/* Various modes */
+#define MODE_LOCAL_CHARS(m) ((m)&(MODE_EDIT|MODE_TRAPSIG))
+#define MODE_LOCAL_ECHO(m) ((m)&MODE_ECHO)
+#define MODE_COMMAND_LINE(m) ((m)==-1)
+
+#define CONTROL(x) ((x)&0x1f) /* CTRL(x) is not portable */
--- /dev/null
+/*
+ * Copyright (c) 1988, 1990 Regents of the University of California.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * @(#)externs.h 5.4 (Berkeley) 12/18/92
+ */
+
+#ifndef BSD
+# define BSD 43
+#endif
+
+/*
+ * ucb stdio.h defines BSD as something wierd
+ */
+#if defined(sun) && defined(__svr4__)
+#define BSD 43
+#endif
+
+#if (BSD > 43 || defined(SYSV_TERMIO)) && !defined(USE_TERMIO)
+# define USE_TERMIO
+#endif
+
+#include <stdio.h>
+#include <setjmp.h>
+#ifndef FILIO_H
+#include <sys/ioctl.h>
+#else
+#include <sys/filio.h>
+#endif
+#ifdef USE_TERMIO
+# ifndef VINTR
+# ifdef SYSV_TERMIO
+# include <sys/termio.h>
+# else
+# include <sys/termios.h>
+# define termio termios
+# endif
+# endif
+#endif
+#if defined(NO_CC_T) || !defined(USE_TERMIO)
+# if !defined(USE_TERMIO)
+typedef char cc_t;
+# else
+typedef unsigned char cc_t;
+# endif
+#endif
+
+#ifndef NO_STRING_H
+#include <string.h>
+#endif
+#include <strings.h>
+
+#ifndef _POSIX_VDISABLE
+# ifdef sun
+# include <sys/param.h> /* pick up VDISABLE definition, mayby */
+# endif
+# ifdef VDISABLE
+# define _POSIX_VDISABLE VDISABLE
+# else
+# define _POSIX_VDISABLE ((cc_t)'\377')
+# endif
+#endif
+
+#define SUBBUFSIZE 256
+
+extern int errno; /* outside this world */
+
+#if !defined(P)
+# ifdef __STDC__
+# define P(x) x
+# else
+# define P(x) ()
+# endif
+#endif
+
+extern int
+ autologin, /* Autologin enabled */
+ skiprc, /* Don't process the ~/.telnetrc file */
+ eight, /* use eight bit mode (binary in and/or out */
+ flushout, /* flush output */
+ connected, /* Are we connected to the other side? */
+ globalmode, /* Mode tty should be in */
+ In3270, /* Are we in 3270 mode? */
+ telnetport, /* Are we connected to the telnet port? */
+ localflow, /* Flow control handled locally */
+ restartany, /* If flow control, restart output on any character */
+ localchars, /* we recognize interrupt/quit */
+ donelclchars, /* the user has set "localchars" */
+ showoptions,
+ net, /* Network file descriptor */
+ tin, /* Terminal input file descriptor */
+ tout, /* Terminal output file descriptor */
+ crlf, /* Should '\r' be mapped to <CR><LF> (or <CR><NUL>)? */
+ autoflush, /* flush output when interrupting? */
+ autosynch, /* send interrupt characters with SYNCH? */
+ SYNCHing, /* Is the stream in telnet SYNCH mode? */
+ donebinarytoggle, /* the user has put us in binary */
+ dontlecho, /* do we suppress local echoing right now? */
+ crmod,
+ netdata, /* Print out network data flow */
+ prettydump, /* Print "netdata" output in user readable format */
+#if defined(unix)
+#if defined(TN3270)
+ cursesdata, /* Print out curses data flow */
+ apitrace, /* Trace API transactions */
+#endif /* defined(TN3270) */
+ termdata, /* Print out terminal data flow */
+#endif /* defined(unix) */
+ debug; /* Debug level */
+
+extern cc_t escape; /* Escape to command mode */
+extern cc_t rlogin; /* Rlogin mode escape character */
+#ifdef KLUDGELINEMODE
+extern cc_t echoc; /* Toggle local echoing */
+#endif
+
+extern char
+ *prompt; /* Prompt for command. */
+
+extern char
+ doopt[],
+ dont[],
+ will[],
+ wont[],
+ options[], /* All the little options */
+ *hostname; /* Who are we connected to? */
+#if defined(ENCRYPTION)
+extern void (*encrypt_output) P((unsigned char *, int));
+extern int (*decrypt_input) P((int));
+#endif
+
+/*
+ * We keep track of each side of the option negotiation.
+ */
+
+#define MY_STATE_WILL 0x01
+#define MY_WANT_STATE_WILL 0x02
+#define MY_STATE_DO 0x04
+#define MY_WANT_STATE_DO 0x08
+
+/*
+ * Macros to check the current state of things
+ */
+
+#define my_state_is_do(opt) (options[opt]&MY_STATE_DO)
+#define my_state_is_will(opt) (options[opt]&MY_STATE_WILL)
+#define my_want_state_is_do(opt) (options[opt]&MY_WANT_STATE_DO)
+#define my_want_state_is_will(opt) (options[opt]&MY_WANT_STATE_WILL)
+
+#define my_state_is_dont(opt) (!my_state_is_do(opt))
+#define my_state_is_wont(opt) (!my_state_is_will(opt))
+#define my_want_state_is_dont(opt) (!my_want_state_is_do(opt))
+#define my_want_state_is_wont(opt) (!my_want_state_is_will(opt))
+
+#define set_my_state_do(opt) {options[opt] |= MY_STATE_DO;}
+#define set_my_state_will(opt) {options[opt] |= MY_STATE_WILL;}
+#define set_my_want_state_do(opt) {options[opt] |= MY_WANT_STATE_DO;}
+#define set_my_want_state_will(opt) {options[opt] |= MY_WANT_STATE_WILL;}
+
+#define set_my_state_dont(opt) {options[opt] &= ~MY_STATE_DO;}
+#define set_my_state_wont(opt) {options[opt] &= ~MY_STATE_WILL;}
+#define set_my_want_state_dont(opt) {options[opt] &= ~MY_WANT_STATE_DO;}
+#define set_my_want_state_wont(opt) {options[opt] &= ~MY_WANT_STATE_WILL;}
+
+/*
+ * Make everything symetrical
+ */
+
+#define HIS_STATE_WILL MY_STATE_DO
+#define HIS_WANT_STATE_WILL MY_WANT_STATE_DO
+#define HIS_STATE_DO MY_STATE_WILL
+#define HIS_WANT_STATE_DO MY_WANT_STATE_WILL
+
+#define his_state_is_do my_state_is_will
+#define his_state_is_will my_state_is_do
+#define his_want_state_is_do my_want_state_is_will
+#define his_want_state_is_will my_want_state_is_do
+
+#define his_state_is_dont my_state_is_wont
+#define his_state_is_wont my_state_is_dont
+#define his_want_state_is_dont my_want_state_is_wont
+#define his_want_state_is_wont my_want_state_is_dont
+
+#define set_his_state_do set_my_state_will
+#define set_his_state_will set_my_state_do
+#define set_his_want_state_do set_my_want_state_will
+#define set_his_want_state_will set_my_want_state_do
+
+#define set_his_state_dont set_my_state_wont
+#define set_his_state_wont set_my_state_dont
+#define set_his_want_state_dont set_my_want_state_wont
+#define set_his_want_state_wont set_my_want_state_dont
+
+
+extern FILE
+ *NetTrace; /* Where debugging output goes */
+extern unsigned char
+ NetTraceFile[]; /* Name of file where debugging output goes */
+extern void
+ SetNetTrace P((char *)); /* Function to change where debugging goes */
+
+extern jmp_buf
+ peerdied,
+ toplevel; /* For error conditions. */
+
+extern void
+ command P((int, char *, int)),
+ Dump P((int, unsigned char *, int)),
+ init_3270 P((void)),
+ printoption P((char *, int, int)),
+ printsub P((int, unsigned char *, int)),
+ sendnaws P((void)),
+ setconnmode P((int)),
+ setcommandmode P((void)),
+ setneturg P((void)),
+ sys_telnet_init P((void)),
+ telnet P((char *)),
+ tel_enter_binary P((int)),
+ TerminalFlushOutput P((void)),
+ TerminalNewMode P((int)),
+ TerminalRestoreState P((void)),
+ TerminalSaveState P((void)),
+ tninit P((void)),
+ upcase P((char *)),
+ willoption P((int)),
+ wontoption P((int));
+
+extern void
+ lm_will P((unsigned char *, int)),
+ lm_wont P((unsigned char *, int)),
+ lm_do P((unsigned char *, int)),
+ lm_dont P((unsigned char *, int)),
+ lm_mode P((unsigned char *, int, int));
+
+extern void
+ slc_init P((void)),
+ slcstate P((void)),
+ slc_mode_export P((void)),
+ slc_mode_import P((int)),
+ slc_import P((int)),
+ slc_export P((void)),
+ slc P((unsigned char *, int)),
+ slc_check P((void)),
+ slc_start_reply P((void)),
+ slc_add_reply P((int, int, int)),
+ slc_end_reply P((void));
+extern int
+ slc_update P((void));
+
+extern void
+ env_opt P((unsigned char *, int)),
+ env_opt_start P((void)),
+ env_opt_start_info P((void)),
+ env_opt_add P((unsigned char *)),
+ env_opt_end P((int));
+
+extern unsigned char
+ *env_default P((int, int)),
+ *env_getvalue P((unsigned char *));
+
+extern int
+ get_status P((void)),
+ dosynch P((void));
+
+extern cc_t
+ *tcval P((int));
+
+#ifndef USE_TERMIO
+
+extern struct tchars ntc;
+extern struct ltchars nltc;
+extern struct sgttyb nttyb;
+
+# define termEofChar ntc.t_eofc
+# define termEraseChar nttyb.sg_erase
+# define termFlushChar nltc.t_flushc
+# define termIntChar ntc.t_intrc
+# define termKillChar nttyb.sg_kill
+# define termLiteralNextChar nltc.t_lnextc
+# define termQuitChar ntc.t_quitc
+# define termSuspChar nltc.t_suspc
+# define termRprntChar nltc.t_rprntc
+# define termWerasChar nltc.t_werasc
+# define termStartChar ntc.t_startc
+# define termStopChar ntc.t_stopc
+# define termForw1Char ntc.t_brkc
+extern cc_t termForw2Char;
+extern cc_t termAytChar;
+
+# define termEofCharp (cc_t *)&ntc.t_eofc
+# define termEraseCharp (cc_t *)&nttyb.sg_erase
+# define termFlushCharp (cc_t *)&nltc.t_flushc
+# define termIntCharp (cc_t *)&ntc.t_intrc
+# define termKillCharp (cc_t *)&nttyb.sg_kill
+# define termLiteralNextCharp (cc_t *)&nltc.t_lnextc
+# define termQuitCharp (cc_t *)&ntc.t_quitc
+# define termSuspCharp (cc_t *)&nltc.t_suspc
+# define termRprntCharp (cc_t *)&nltc.t_rprntc
+# define termWerasCharp (cc_t *)&nltc.t_werasc
+# define termStartCharp (cc_t *)&ntc.t_startc
+# define termStopCharp (cc_t *)&ntc.t_stopc
+# define termForw1Charp (cc_t *)&ntc.t_brkc
+# define termForw2Charp (cc_t *)&termForw2Char
+# define termAytCharp (cc_t *)&termAytChar
+
+# else
+
+extern struct termio new_tc;
+
+# define termEofChar new_tc.c_cc[VEOF]
+# define termEraseChar new_tc.c_cc[VERASE]
+# define termIntChar new_tc.c_cc[VINTR]
+# define termKillChar new_tc.c_cc[VKILL]
+# define termQuitChar new_tc.c_cc[VQUIT]
+
+# ifndef VSUSP
+extern cc_t termSuspChar;
+# else
+# define termSuspChar new_tc.c_cc[VSUSP]
+# endif
+# if defined(VFLUSHO) && !defined(VDISCARD)
+# define VDISCARD VFLUSHO
+# endif
+# ifndef VDISCARD
+extern cc_t termFlushChar;
+# else
+# define termFlushChar new_tc.c_cc[VDISCARD]
+# endif
+# ifndef VWERASE
+extern cc_t termWerasChar;
+# else
+# define termWerasChar new_tc.c_cc[VWERASE]
+# endif
+# ifndef VREPRINT
+extern cc_t termRprntChar;
+# else
+# define termRprntChar new_tc.c_cc[VREPRINT]
+# endif
+# ifndef VLNEXT
+extern cc_t termLiteralNextChar;
+# else
+# define termLiteralNextChar new_tc.c_cc[VLNEXT]
+# endif
+# ifndef VSTART
+extern cc_t termStartChar;
+# else
+# define termStartChar new_tc.c_cc[VSTART]
+# endif
+# ifndef VSTOP
+extern cc_t termStopChar;
+# else
+# define termStopChar new_tc.c_cc[VSTOP]
+# endif
+# ifndef VEOL
+extern cc_t termForw1Char;
+# else
+# define termForw1Char new_tc.c_cc[VEOL]
+# endif
+# ifndef VEOL2
+extern cc_t termForw2Char;
+# else
+# define termForw2Char new_tc.c_cc[VEOL]
+# endif
+# ifndef VSTATUS
+extern cc_t termAytChar;
+#else
+# define termAytChar new_tc.c_cc[VSTATUS]
+#endif
+
+# if !defined(CRAY) || defined(__STDC__)
+# define termEofCharp &termEofChar
+# define termEraseCharp &termEraseChar
+# define termIntCharp &termIntChar
+# define termKillCharp &termKillChar
+# define termQuitCharp &termQuitChar
+# define termSuspCharp &termSuspChar
+# define termFlushCharp &termFlushChar
+# define termWerasCharp &termWerasChar
+# define termRprntCharp &termRprntChar
+# define termLiteralNextCharp &termLiteralNextChar
+# define termStartCharp &termStartChar
+# define termStopCharp &termStopChar
+# define termForw1Charp &termForw1Char
+# define termForw2Charp &termForw2Char
+# define termAytCharp &termAytChar
+# else
+ /* Work around a compiler bug */
+# define termEofCharp 0
+# define termEraseCharp 0
+# define termIntCharp 0
+# define termKillCharp 0
+# define termQuitCharp 0
+# define termSuspCharp 0
+# define termFlushCharp 0
+# define termWerasCharp 0
+# define termRprntCharp 0
+# define termLiteralNextCharp 0
+# define termStartCharp 0
+# define termStopCharp 0
+# define termForw1Charp 0
+# define termForw2Charp 0
+# define termAytCharp 0
+# endif
+#endif
+
+
+/* Ring buffer structures which are shared */
+
+extern Ring
+ netoring,
+ netiring,
+ ttyoring,
+ ttyiring;
+
+/* Tn3270 section */
+#if defined(TN3270)
+
+extern int
+ HaveInput, /* Whether an asynchronous I/O indication came in */
+ noasynchtty, /* Don't do signals on I/O (SIGURG, SIGIO) */
+ noasynchnet, /* Don't do signals on I/O (SIGURG, SIGIO) */
+ sigiocount, /* Count of SIGIO receptions */
+ shell_active; /* Subshell is active */
+
+extern char
+ *Ibackp, /* Oldest byte of 3270 data */
+ Ibuf[], /* 3270 buffer */
+ *Ifrontp, /* Where next 3270 byte goes */
+ tline[],
+ *transcom; /* Transparent command */
+
+extern int
+ settranscom P((int, char**));
+
+extern void
+ inputAvailable P((void));
+#endif /* defined(TN3270) */
--- /dev/null
+/*
+ * Copyright (c) 1988 Regents of the University of California.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * @(#)fdset.h 5.1 (Berkeley) 9/14/90
+ */
+
+/*
+ * The following is defined just in case someone should want to run
+ * this telnet on a 4.2 system.
+ *
+ */
+
+#ifndef FD_SETSIZE
+
+#define FD_SET(n, p) ((p)->fds_bits[0] |= (1<<(n)))
+#define FD_CLR(n, p) ((p)->fds_bits[0] &= ~(1<<(n)))
+#define FD_ISSET(n, p) ((p)->fds_bits[0] & (1<<(n)))
+#define FD_ZERO(p) ((p)->fds_bits[0] = 0)
+
+#endif
--- /dev/null
+/*
+ * Copyright (c) 1988 Regents of the University of California.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * @(#)general.h 5.2 (Berkeley) 3/1/91
+ */
+
+/*
+ * Some general definitions.
+ */
+
+
+#define numberof(x) (sizeof x/sizeof x[0])
+#define highestof(x) (numberof(x)-1)
+
+#define ClearElement(x) memset((char *)&x, 0, sizeof x)
+#define ClearArray(x) memset((char *)x, 0, sizeof x)
--- /dev/null
+/*
+ * Copyright (c) 1988, 1990 Regents of the University of California.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef lint
+char copyright[] =
+"@(#) Copyright (c) 1988, 1990 Regents of the University of California.\n\
+ All rights reserved.\n";
+#endif /* not lint */
+
+#ifndef lint
+static char sccsid[] = "@(#)main.c 5.5 (Berkeley) 12/18/92";
+#endif /* not lint */
+
+#include <sys/types.h>
+
+#include "ring.h"
+#include "externs.h"
+#include "defines.h"
+
+/* These values need to be the same as defined in libtelnet/kerberos5.c */
+/* Either define them in both places, or put in some common header file. */
+#define OPTS_FORWARD_CREDS 0x00000002
+#define OPTS_FORWARDABLE_CREDS 0x00000001
+
+/*
+ * Initialize variables.
+ */
+ void
+tninit()
+{
+ init_terminal();
+
+ init_network();
+
+ init_telnet();
+
+ init_sys();
+
+#if defined(TN3270)
+ init_3270();
+#endif
+}
+
+ void
+usage()
+{
+ fprintf(stderr, "Usage: %s %s%s%s%s\n",
+ prompt,
+#ifdef AUTHENTICATION
+ " [-8] [-E] [-K] [-L] [-X atype] [-a] [-d] [-e char] [-k realm]",
+ "\n\t[-l user] [-f/-F] [-n tracefile] ",
+#else
+ " [-8] [-E] [-L] [-a] [-d] [-e char] [-l user] [-n tracefile]",
+ "\n\t",
+#endif
+#if defined(TN3270) && defined(unix)
+# ifdef AUTHENTICATION
+ "[-noasynch] [-noasynctty] [-noasyncnet]\n\t[-r] [-t transcom] ",
+# else
+ "[-noasynch] [-noasynctty] [-noasyncnet] [-r] [-t transcom]\n\t",
+# endif
+#else
+ "[-r] ",
+#endif
+#ifdef ENCRYPTION
+ "[-x] [host-name [port]]"
+#else
+ "[host-name [port]]"
+#endif
+ );
+ exit(1);
+}
+
+/*
+ * main. Parse arguments, invoke the protocol or command parser.
+ */
+
+
+main(argc, argv)
+ int argc;
+ char *argv[];
+{
+ extern char *optarg;
+ extern int optind;
+ int ch;
+ char *user, *strrchr();
+ extern int forward_flags;
+
+ tninit(); /* Clear out things */
+#if defined(CRAY) && !defined(__STDC__)
+ _setlist_init(); /* Work around compiler bug */
+#endif
+
+ TerminalSaveState();
+
+ if (prompt = strrchr(argv[0], '/'))
+ ++prompt;
+ else
+ prompt = argv[0];
+
+ user = NULL;
+
+ rlogin = (strncmp(prompt, "rlog", 4) == 0) ? '~' : _POSIX_VDISABLE;
+ autologin = -1;
+
+ while ((ch = getopt(argc, argv, "8EKLS:X:acde:fFk:l:n:rt:x")) != EOF) {
+ switch(ch) {
+ case '8':
+ eight = 3; /* binary output and input */
+ break;
+ case 'E':
+ rlogin = escape = _POSIX_VDISABLE;
+ break;
+ case 'K':
+#ifdef AUTHENTICATION
+ autologin = 0;
+#endif
+ break;
+ case 'L':
+ eight |= 2; /* binary output only */
+ break;
+ case 'S':
+ {
+#ifdef HAS_GETTOS
+ extern int tos;
+
+ if ((tos = parsetos(optarg, "tcp")) < 0)
+ fprintf(stderr, "%s%s%s%s\n",
+ prompt, ": Bad TOS argument '",
+ optarg,
+ "; will try to use default TOS");
+#else
+ fprintf(stderr,
+ "%s: Warning: -S ignored, no parsetos() support.\n",
+ prompt);
+#endif
+ }
+ break;
+ case 'X':
+#ifdef AUTHENTICATION
+ auth_disable_name(optarg);
+#endif
+ break;
+ case 'a':
+ autologin = 1;
+ break;
+ case 'c':
+ skiprc = 1;
+ break;
+ case 'd':
+ debug = 1;
+ break;
+ case 'e':
+ set_escape_char(optarg);
+ break;
+ case 'f':
+#if defined(AUTHENTICATION) && defined(KRB5)
+ if (forward_flags & OPTS_FORWARD_CREDS) {
+ fprintf(stderr,
+ "%s: Only one of -f and -F allowed.\n",
+ prompt);
+ usage();
+ }
+ forward_flags |= OPTS_FORWARD_CREDS;
+#else
+ fprintf(stderr,
+ "%s: Warning: -f ignored, no Kerberos V5 support.\n",
+ prompt);
+#endif
+ break;
+ case 'F':
+#if defined(AUTHENTICATION) && defined(KRB5)
+ if (forward_flags & OPTS_FORWARD_CREDS) {
+ fprintf(stderr,
+ "%s: Only one of -f and -F allowed.\n",
+ prompt);
+ usage();
+ }
+ forward_flags |= OPTS_FORWARD_CREDS;
+ forward_flags |= OPTS_FORWARDABLE_CREDS;
+#else
+ fprintf(stderr,
+ "%s: Warning: -F ignored, no Kerberos V5 support.\n",
+ prompt);
+#endif
+ break;
+ case 'k':
+#if defined(AUTHENTICATION) && defined(KRB4)
+ {
+ extern char *dest_realm, dst_realm_buf[], dst_realm_sz;
+ dest_realm = dst_realm_buf;
+ (void)strncpy(dest_realm, optarg, dst_realm_sz);
+ }
+#else
+ fprintf(stderr,
+ "%s: Warning: -k ignored, no Kerberos V4 support.\n",
+ prompt);
+#endif
+ break;
+ case 'l':
+ autologin = 1;
+ user = optarg;
+ break;
+ case 'n':
+#if defined(TN3270) && defined(unix)
+ /* distinguish between "-n oasynch" and "-noasynch" */
+ if (argv[optind - 1][0] == '-' && argv[optind - 1][1]
+ == 'n' && argv[optind - 1][2] == 'o') {
+ if (!strcmp(optarg, "oasynch")) {
+ noasynchtty = 1;
+ noasynchnet = 1;
+ } else if (!strcmp(optarg, "oasynchtty"))
+ noasynchtty = 1;
+ else if (!strcmp(optarg, "oasynchnet"))
+ noasynchnet = 1;
+ } else
+#endif /* defined(TN3270) && defined(unix) */
+ SetNetTrace(optarg);
+ break;
+ case 'r':
+ rlogin = '~';
+ break;
+ case 't':
+#if defined(TN3270) && defined(unix)
+ transcom = tline;
+ (void)strcpy(transcom, optarg);
+#else
+ fprintf(stderr,
+ "%s: Warning: -t ignored, no TN3270 support.\n",
+ prompt);
+#endif
+ break;
+ case 'x':
+#ifdef ENCRYPTION
+ encrypt_auto(1);
+ decrypt_auto(1);
+#else
+ fprintf(stderr,
+ "%s: Warning: -x ignored, no ENCRYPT support.\n",
+ prompt);
+#endif
+ break;
+ case '?':
+ default:
+ usage();
+ /* NOTREACHED */
+ }
+ }
+ if (autologin == -1)
+ autologin = (rlogin == _POSIX_VDISABLE) ? 0 : 1;
+
+ argc -= optind;
+ argv += optind;
+
+ if (argc) {
+ char *args[7], **argp = args;
+
+ if (argc > 2)
+ usage();
+ *argp++ = prompt;
+ if (user) {
+ *argp++ = "-l";
+ *argp++ = user;
+ }
+ *argp++ = argv[0]; /* host */
+ if (argc > 1)
+ *argp++ = argv[1]; /* port */
+ *argp = 0;
+
+ if (setjmp(toplevel) != 0)
+ Exit(0);
+ if (tn(argp - args, args) == 1)
+ return (0);
+ else
+ return (1);
+ }
+ (void)setjmp(toplevel);
+ for (;;) {
+#ifdef TN3270
+ if (shell_active)
+ shell_continue();
+ else
+#endif
+ command(1, 0, 0);
+ }
+}
--- /dev/null
+/*
+ * Copyright (c) 1988 Regents of the University of California.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef lint
+static char sccsid[] = "@(#)network.c 5.3 (Berkeley) 12/18/92";
+#endif /* not lint */
+
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <sys/time.h>
+
+#include <errno.h>
+
+#include <arpa/telnet.h>
+
+#include "ring.h"
+
+#include "defines.h"
+#include "externs.h"
+#include "fdset.h"
+
+Ring netoring, netiring;
+unsigned char netobuf[2*BUFSIZ], netibuf[BUFSIZ];
+
+/*
+ * Initialize internal network data structures.
+ */
+
+ void
+init_network()
+{
+ if (ring_init(&netoring, netobuf, sizeof netobuf) != 1) {
+ exit(1);
+ }
+ if (ring_init(&netiring, netibuf, sizeof netibuf) != 1) {
+ exit(1);
+ }
+ NetTrace = stdout;
+}
+
+
+/*
+ * Check to see if any out-of-band data exists on a socket (for
+ * Telnet "synch" processing).
+ */
+
+ int
+stilloob()
+{
+ static struct timeval timeout = { 0 };
+ fd_set excepts;
+ int value;
+
+ do {
+ FD_ZERO(&excepts);
+ FD_SET(net, &excepts);
+ value = select(net+1, (fd_set *)0, (fd_set *)0, &excepts, &timeout);
+ } while ((value == -1) && (errno == EINTR));
+
+ if (value < 0) {
+ perror("select");
+ (void) quit();
+ /* NOTREACHED */
+ }
+ if (FD_ISSET(net, &excepts)) {
+ return 1;
+ } else {
+ return 0;
+ }
+}
+
+
+/*
+ * setneturg()
+ *
+ * Sets "neturg" to the current location.
+ */
+
+ void
+setneturg()
+{
+ ring_mark(&netoring);
+}
+
+
+/*
+ * netflush
+ * Send as much data as possible to the network,
+ * handling requests for urgent data.
+ *
+ * The return value indicates whether we did any
+ * useful work.
+ */
+
+
+ int
+netflush()
+{
+ register int n, n1;
+
+#if defined(ENCRYPTION)
+ if (encrypt_output)
+ ring_encrypt(&netoring, encrypt_output);
+#endif
+ if ((n1 = n = ring_full_consecutive(&netoring)) > 0) {
+ if (!ring_at_mark(&netoring)) {
+ n = send(net, netoring.consume, n, 0); /* normal write */
+ } else {
+ /*
+ * In 4.2 (and 4.3) systems, there is some question about
+ * what byte in a sendOOB operation is the "OOB" data.
+ * To make ourselves compatible, we only send ONE byte
+ * out of band, the one WE THINK should be OOB (though
+ * we really have more the TCP philosophy of urgent data
+ * rather than the Unix philosophy of OOB data).
+ */
+ n = send(net, netoring.consume, 1, MSG_OOB);/* URGENT data */
+ }
+ }
+ if (n < 0) {
+ if (errno != ENOBUFS && errno != EWOULDBLOCK) {
+ setcommandmode();
+ perror(hostname);
+ (void)NetClose(net);
+ ring_clear_mark(&netoring);
+ longjmp(peerdied, -1);
+ /*NOTREACHED*/
+ }
+ n = 0;
+ }
+ if (netdata && n) {
+ Dump('>', netoring.consume, n);
+ }
+ if (n) {
+ ring_consumed(&netoring, n);
+ /*
+ * If we sent all, and more to send, then recurse to pick
+ * up the other half.
+ */
+ if ((n1 == n) && ring_full_consecutive(&netoring)) {
+ (void) netflush();
+ }
+ return 1;
+ } else {
+ return 0;
+ }
+}
--- /dev/null
+/*
+ * Copyright (c) 1988 Regents of the University of California.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef lint
+static char sccsid[] = "@(#)ring.c 5.3 (Berkeley) 12/18/92";
+#endif /* not lint */
+
+/*
+ * This defines a structure for a ring buffer.
+ *
+ * The circular buffer has two parts:
+ *(((
+ * full: [consume, supply)
+ * empty: [supply, consume)
+ *]]]
+ *
+ */
+
+#include <stdio.h>
+#include <errno.h>
+
+#ifdef size_t
+#undef size_t
+#endif
+
+#include <sys/types.h>
+#ifndef FILIO_H
+#include <sys/ioctl.h>
+#endif
+#include <sys/socket.h>
+
+#include "ring.h"
+#include "general.h"
+
+/* Internal macros */
+
+#if !defined(MIN)
+#define MIN(a,b) (((a)<(b))? (a):(b))
+#endif /* !defined(MIN) */
+
+#define ring_subtract(d,a,b) (((a)-(b) >= 0)? \
+ (a)-(b): (((a)-(b))+(d)->size))
+
+#define ring_increment(d,a,c) (((a)+(c) < (d)->top)? \
+ (a)+(c) : (((a)+(c))-(d)->size))
+
+#define ring_decrement(d,a,c) (((a)-(c) >= (d)->bottom)? \
+ (a)-(c) : (((a)-(c))-(d)->size))
+
+
+/*
+ * The following is a clock, used to determine full, empty, etc.
+ *
+ * There is some trickiness here. Since the ring buffers are initialized
+ * to ZERO on allocation, we need to make sure, when interpreting the
+ * clock, that when the times are EQUAL, then the buffer is FULL.
+ */
+static u_long ring_clock = 0;
+
+
+#define ring_empty(d) (((d)->consume == (d)->supply) && \
+ ((d)->consumetime >= (d)->supplytime))
+#define ring_full(d) (((d)->supply == (d)->consume) && \
+ ((d)->supplytime > (d)->consumetime))
+
+
+
+
+
+/* Buffer state transition routines */
+
+ ring_init(ring, buffer, count)
+Ring *ring;
+ unsigned char *buffer;
+ int count;
+{
+ memset((char *)ring, 0, sizeof *ring);
+
+ ring->size = count;
+
+ ring->supply = ring->consume = ring->bottom = buffer;
+
+ ring->top = ring->bottom+ring->size;
+
+#if defined(ENCRYPTION)
+ ring->clearto = 0;
+#endif
+
+ return 1;
+}
+
+/* Mark routines */
+
+/*
+ * Mark the most recently supplied byte.
+ */
+
+ void
+ring_mark(ring)
+ Ring *ring;
+{
+ ring->mark = ring_decrement(ring, ring->supply, 1);
+}
+
+/*
+ * Is the ring pointing to the mark?
+ */
+
+ int
+ring_at_mark(ring)
+ Ring *ring;
+{
+ if (ring->mark == ring->consume) {
+ return 1;
+ } else {
+ return 0;
+ }
+}
+
+/*
+ * Clear any mark set on the ring.
+ */
+
+ void
+ring_clear_mark(ring)
+ Ring *ring;
+{
+ ring->mark = 0;
+}
+
+/*
+ * Add characters from current segment to ring buffer.
+ */
+ void
+ring_supplied(ring, count)
+ Ring *ring;
+ int count;
+{
+ ring->supply = ring_increment(ring, ring->supply, count);
+ ring->supplytime = ++ring_clock;
+}
+
+/*
+ * We have just consumed "c" bytes.
+ */
+ void
+ring_consumed(ring, count)
+ Ring *ring;
+ int count;
+{
+ if (count == 0) /* don't update anything */
+ return;
+
+ if (ring->mark &&
+ (ring_subtract(ring, ring->mark, ring->consume) < count)) {
+ ring->mark = 0;
+ }
+#if defined(ENCRYPTION)
+ if (ring->consume < ring->clearto &&
+ ring->clearto <= ring->consume + count)
+ ring->clearto = 0;
+ else if (ring->consume + count > ring->top &&
+ ring->bottom <= ring->clearto &&
+ ring->bottom + ((ring->consume + count) - ring->top))
+ ring->clearto = 0;
+#endif
+ ring->consume = ring_increment(ring, ring->consume, count);
+ ring->consumetime = ++ring_clock;
+ /*
+ * Try to encourage "ring_empty_consecutive()" to be large.
+ */
+ if (ring_empty(ring)) {
+ ring->consume = ring->supply = ring->bottom;
+ }
+}
+
+
+
+/* Buffer state query routines */
+
+
+/* Number of bytes that may be supplied */
+ int
+ring_empty_count(ring)
+ Ring *ring;
+{
+ if (ring_empty(ring)) { /* if empty */
+ return ring->size;
+ } else {
+ return ring_subtract(ring, ring->consume, ring->supply);
+ }
+}
+
+/* number of CONSECUTIVE bytes that may be supplied */
+ int
+ring_empty_consecutive(ring)
+ Ring *ring;
+{
+ if ((ring->consume < ring->supply) || ring_empty(ring)) {
+ /*
+ * if consume is "below" supply, or empty, then
+ * return distance to the top
+ */
+ return ring_subtract(ring, ring->top, ring->supply);
+ } else {
+ /*
+ * else, return what we may.
+ */
+ return ring_subtract(ring, ring->consume, ring->supply);
+ }
+}
+
+/* Return the number of bytes that are available for consuming
+ * (but don't give more than enough to get to cross over set mark)
+ */
+
+ int
+ring_full_count(ring)
+ Ring *ring;
+{
+ if ((ring->mark == 0) || (ring->mark == ring->consume)) {
+ if (ring_full(ring)) {
+ return ring->size; /* nothing consumed, but full */
+ } else {
+ return ring_subtract(ring, ring->supply, ring->consume);
+ }
+ } else {
+ return ring_subtract(ring, ring->mark, ring->consume);
+ }
+}
+
+/*
+ * Return the number of CONSECUTIVE bytes available for consuming.
+ * However, don't return more than enough to cross over set mark.
+ */
+ int
+ring_full_consecutive(ring)
+ Ring *ring;
+{
+ if ((ring->mark == 0) || (ring->mark == ring->consume)) {
+ if ((ring->supply < ring->consume) || ring_full(ring)) {
+ return ring_subtract(ring, ring->top, ring->consume);
+ } else {
+ return ring_subtract(ring, ring->supply, ring->consume);
+ }
+ } else {
+ if (ring->mark < ring->consume) {
+ return ring_subtract(ring, ring->top, ring->consume);
+ } else { /* Else, distance to mark */
+ return ring_subtract(ring, ring->mark, ring->consume);
+ }
+ }
+}
+
+/*
+ * Move data into the "supply" portion of of the ring buffer.
+ */
+ void
+ring_supply_data(ring, buffer, count)
+ Ring *ring;
+ unsigned char *buffer;
+ int count;
+{
+ int i;
+
+ while (count) {
+ i = MIN(count, ring_empty_consecutive(ring));
+ memcpy(ring->supply, buffer, i);
+ ring_supplied(ring, i);
+ count -= i;
+ buffer += i;
+ }
+}
+
+#ifdef notdef
+
+/*
+ * Move data from the "consume" portion of the ring buffer
+ */
+ void
+ring_consume_data(ring, buffer, count)
+ Ring *ring;
+ unsigned char *buffer;
+ int count;
+{
+ int i;
+
+ while (count) {
+ i = MIN(count, ring_full_consecutive(ring));
+ memcpy(buffer, ring->consume, i);
+ ring_consumed(ring, i);
+ count -= i;
+ buffer += i;
+ }
+}
+#endif
+
+#if defined(ENCRYPTION)
+ void
+ring_encrypt(ring, encryptor)
+ Ring *ring;
+ void (*encryptor)();
+{
+ unsigned char *s, *c;
+
+ if (ring_empty(ring) || ring->clearto == ring->supply)
+ return;
+
+ if (!(c = ring->clearto))
+ c = ring->consume;
+
+ s = ring->supply;
+
+ if (s <= c) {
+ (*encryptor)(c, ring->top - c);
+ (*encryptor)(ring->bottom, s - ring->bottom);
+ } else
+ (*encryptor)(c, s - c);
+
+ ring->clearto = ring->supply;
+}
+
+ void
+ring_clearto(ring)
+ Ring *ring;
+{
+ if (!ring_empty(ring))
+ ring->clearto = ring->supply;
+ else
+ ring->clearto = 0;
+}
+#endif
--- /dev/null
+/*
+ * Copyright (c) 1988 Regents of the University of California.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * @(#)ring.h 5.3 (Berkeley) 12/18/92
+ */
+
+#if defined(P)
+# undef P
+#endif
+
+#if defined(__STDC__) || defined(LINT_ARGS)
+# define P(x) x
+#else
+# define P(x) ()
+#endif
+
+/*
+ * This defines a structure for a ring buffer.
+ *
+ * The circular buffer has two parts:
+ *(((
+ * full: [consume, supply)
+ * empty: [supply, consume)
+ *]]]
+ *
+ */
+typedef struct {
+ unsigned char *consume, /* where data comes out of */
+ *supply, /* where data comes in to */
+ *bottom, /* lowest address in buffer */
+ *top, /* highest address+1 in buffer */
+ *mark; /* marker (user defined) */
+#if defined(ENCRYPTION)
+ unsigned char *clearto; /* Data to this point is clear text */
+ unsigned char *encryyptedto; /* Data is encrypted to here */
+#endif
+ int size; /* size in bytes of buffer */
+ u_long consumetime, /* help us keep straight full, empty, etc. */
+ supplytime;
+} Ring;
+
+/* Here are some functions and macros to deal with the ring buffer */
+
+/* Initialization routine */
+extern int
+ ring_init P((Ring *ring, unsigned char *buffer, int count));
+
+/* Data movement routines */
+extern void
+ ring_supply_data P((Ring *ring, unsigned char *buffer, int count));
+#ifdef notdef
+extern void
+ ring_consume_data P((Ring *ring, unsigned char *buffer, int count));
+#endif
+
+/* Buffer state transition routines */
+extern void
+ ring_supplied P((Ring *ring, int count)),
+ ring_consumed P((Ring *ring, int count));
+
+/* Buffer state query routines */
+extern int
+ ring_empty_count P((Ring *ring)),
+ ring_empty_consecutive P((Ring *ring)),
+ ring_full_count P((Ring *ring)),
+ ring_full_consecutive P((Ring *ring));
+
+#if defined(ENCRYPTION)
+extern void
+ ring_encrypt P((Ring *ring, void (*func)())),
+ ring_clearto P((Ring *ring));
+#endif
+
+extern void
+ ring_clear_mark(),
+ ring_mark();
--- /dev/null
+/*
+ * Copyright (c) 1988, 1990 Regents of the University of California.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef lint
+static char sccsid[] = "@(#)sys_bsd.c 5.3 (Berkeley) 12/18/92";
+#endif /* not lint */
+
+/*
+ * The following routines try to encapsulate what is system dependent
+ * (at least between 4.x and dos) which is used in telnet.c.
+ */
+
+
+#include <fcntl.h>
+#include <sys/types.h>
+#include <sys/time.h>
+#include <sys/socket.h>
+#include <signal.h>
+#include <errno.h>
+#include <arpa/telnet.h>
+
+#include "ring.h"
+
+#include "fdset.h"
+
+#include "defines.h"
+#include "externs.h"
+#include "types.h"
+
+#if defined(CRAY) || (defined(USE_TERMIO) && !defined(SYSV_TERMIO))
+#define SIG_FUNC_RET void
+#else
+#define SIG_FUNC_RET int
+#endif
+
+int
+ tout, /* Output file descriptor */
+ tin, /* Input file descriptor */
+ net;
+
+#ifndef USE_TERMIO
+struct tchars otc = { 0 }, ntc = { 0 };
+struct ltchars oltc = { 0 }, nltc = { 0 };
+struct sgttyb ottyb = { 0 }, nttyb = { 0 };
+int olmode = 0;
+# define cfgetispeed(ptr) (ptr)->sg_ispeed
+# define cfgetospeed(ptr) (ptr)->sg_ospeed
+# define old_tc ottyb
+
+#else /* USE_TERMIO */
+struct termio old_tc = { 0 };
+extern struct termio new_tc;
+
+# ifndef TCSANOW
+# ifdef TCSETS
+# define TCSANOW TCSETS
+# define TCSADRAIN TCSETSW
+# define tcgetattr(f, t) ioctl(f, TCGETS, (char *)t)
+# else
+# ifdef TCSETA
+# define TCSANOW TCSETA
+# define TCSADRAIN TCSETAW
+# define tcgetattr(f, t) ioctl(f, TCGETA, (char *)t)
+# else
+# define TCSANOW TIOCSETA
+# define TCSADRAIN TIOCSETAW
+# define tcgetattr(f, t) ioctl(f, TIOCGETA, (char *)t)
+# endif
+# endif
+# define tcsetattr(f, a, t) ioctl(f, a, (char *)t)
+# define cfgetospeed(ptr) ((ptr)->c_cflag&CBAUD)
+# ifdef CIBAUD
+# define cfgetispeed(ptr) (((ptr)->c_cflag&CIBAUD) >> IBSHIFT)
+# else
+# define cfgetispeed(ptr) cfgetospeed(ptr)
+# endif
+# endif /* TCSANOW */
+# ifdef sysV88
+# define TIOCFLUSH TC_PX_DRAIN
+# endif
+#endif /* USE_TERMIO */
+
+static fd_set ibits, obits, xbits;
+
+
+ void
+init_sys()
+{
+ tout = fileno(stdout);
+ tin = fileno(stdin);
+ FD_ZERO(&ibits);
+ FD_ZERO(&obits);
+ FD_ZERO(&xbits);
+
+ errno = 0;
+}
+
+
+ int
+TerminalWrite(buf, n)
+ char *buf;
+ int n;
+{
+ return write(tout, buf, n);
+}
+
+ int
+TerminalRead(buf, n)
+ char *buf;
+ int n;
+{
+ return read(tin, buf, n);
+}
+
+/*
+ *
+ */
+
+ int
+TerminalAutoFlush()
+{
+#if defined(LNOFLSH)
+ int flush;
+
+ ioctl(0, TIOCLGET, (char *)&flush);
+ return !(flush&LNOFLSH); /* if LNOFLSH, no autoflush */
+#else /* LNOFLSH */
+ return 1;
+#endif /* LNOFLSH */
+}
+
+#ifdef KLUDGELINEMODE
+extern int kludgelinemode;
+#endif
+/*
+ * TerminalSpecialChars()
+ *
+ * Look at an input character to see if it is a special character
+ * and decide what to do.
+ *
+ * Output:
+ *
+ * 0 Don't add this character.
+ * 1 Do add this character
+ */
+
+ int
+TerminalSpecialChars(c)
+ int c;
+{
+ void xmitAO(), xmitEL(), xmitEC(), intp(), sendbrk();
+
+ if (c == termIntChar) {
+ intp();
+ return 0;
+ } else if (c == termQuitChar) {
+#ifdef KLUDGELINEMODE
+ if (kludgelinemode)
+ sendbrk();
+ else
+#endif
+ sendabort();
+ return 0;
+ } else if (c == termEofChar) {
+ if (my_want_state_is_will(TELOPT_LINEMODE)) {
+ sendeof();
+ return 0;
+ }
+ return 1;
+ } else if (c == termSuspChar) {
+ sendsusp();
+ return(0);
+ } else if (c == termFlushChar) {
+ xmitAO(); /* Transmit Abort Output */
+ return 0;
+ } else if (!MODE_LOCAL_CHARS(globalmode)) {
+ if (c == termKillChar) {
+ xmitEL();
+ return 0;
+ } else if (c == termEraseChar) {
+ xmitEC(); /* Transmit Erase Character */
+ return 0;
+ }
+ }
+ return 1;
+}
+
+
+/*
+ * Flush output to the terminal
+ */
+
+ void
+TerminalFlushOutput()
+{
+#ifdef TIOCFLUSH
+ (void) ioctl(fileno(stdout), TIOCFLUSH, (char *) 0);
+#else
+ (void) ioctl(fileno(stdout), TCFLSH, (char *) 0);
+#endif
+}
+
+ void
+TerminalSaveState()
+{
+#ifndef USE_TERMIO
+ ioctl(0, TIOCGETP, (char *)&ottyb);
+ ioctl(0, TIOCGETC, (char *)&otc);
+ ioctl(0, TIOCGLTC, (char *)&oltc);
+ ioctl(0, TIOCLGET, (char *)&olmode);
+
+ ntc = otc;
+ nltc = oltc;
+ nttyb = ottyb;
+
+#else /* USE_TERMIO */
+ tcgetattr(0, &old_tc);
+
+ new_tc = old_tc;
+
+#ifndef VDISCARD
+ termFlushChar = CONTROL('O');
+#endif
+#ifndef VWERASE
+ termWerasChar = CONTROL('W');
+#endif
+#ifndef VREPRINT
+ termRprntChar = CONTROL('R');
+#endif
+#ifndef VLNEXT
+ termLiteralNextChar = CONTROL('V');
+#endif
+#ifndef VSTART
+ termStartChar = CONTROL('Q');
+#endif
+#ifndef VSTOP
+ termStopChar = CONTROL('S');
+#endif
+#ifndef VSTATUS
+ termAytChar = CONTROL('T');
+#endif
+#endif /* USE_TERMIO */
+}
+
+ cc_t *
+tcval(func)
+ register int func;
+{
+ switch(func) {
+ case SLC_IP: return(&termIntChar);
+ case SLC_ABORT: return(&termQuitChar);
+ case SLC_EOF: return(&termEofChar);
+ case SLC_EC: return(&termEraseChar);
+ case SLC_EL: return(&termKillChar);
+ case SLC_XON: return(&termStartChar);
+ case SLC_XOFF: return(&termStopChar);
+ case SLC_FORW1: return(&termForw1Char);
+#ifdef USE_TERMIO
+ case SLC_FORW2: return(&termForw2Char);
+# ifdef VDISCARD
+ case SLC_AO: return(&termFlushChar);
+# endif
+# ifdef VSUSP
+ case SLC_SUSP: return(&termSuspChar);
+# endif
+# ifdef VWERASE
+ case SLC_EW: return(&termWerasChar);
+# endif
+# ifdef VREPRINT
+ case SLC_RP: return(&termRprntChar);
+# endif
+# ifdef VLNEXT
+ case SLC_LNEXT: return(&termLiteralNextChar);
+# endif
+# ifdef VSTATUS
+ case SLC_AYT: return(&termAytChar);
+# endif
+#endif
+
+ case SLC_SYNCH:
+ case SLC_BRK:
+ case SLC_EOR:
+ default:
+ return((cc_t *)0);
+ }
+}
+
+ void
+TerminalDefaultChars()
+{
+#ifndef USE_TERMIO
+ ntc = otc;
+ nltc = oltc;
+ nttyb.sg_kill = ottyb.sg_kill;
+ nttyb.sg_erase = ottyb.sg_erase;
+#else /* USE_TERMIO */
+ memcpy(new_tc.c_cc, old_tc.c_cc, sizeof(old_tc.c_cc));
+# ifndef VDISCARD
+ termFlushChar = CONTROL('O');
+# endif
+# ifndef VWERASE
+ termWerasChar = CONTROL('W');
+# endif
+# ifndef VREPRINT
+ termRprntChar = CONTROL('R');
+# endif
+# ifndef VLNEXT
+ termLiteralNextChar = CONTROL('V');
+# endif
+# ifndef VSTART
+ termStartChar = CONTROL('Q');
+# endif
+# ifndef VSTOP
+ termStopChar = CONTROL('S');
+# endif
+# ifndef VSTATUS
+ termAytChar = CONTROL('T');
+# endif
+#endif /* USE_TERMIO */
+}
+
+#ifdef notdef
+void
+TerminalRestoreState()
+{
+}
+#endif
+
+/*
+ * TerminalNewMode - set up terminal to a specific mode.
+ * MODE_ECHO: do local terminal echo
+ * MODE_FLOW: do local flow control
+ * MODE_TRAPSIG: do local mapping to TELNET IAC sequences
+ * MODE_EDIT: do local line editing
+ *
+ * Command mode:
+ * MODE_ECHO|MODE_EDIT|MODE_FLOW|MODE_TRAPSIG
+ * local echo
+ * local editing
+ * local xon/xoff
+ * local signal mapping
+ *
+ * Linemode:
+ * local/no editing
+ * Both Linemode and Single Character mode:
+ * local/remote echo
+ * local/no xon/xoff
+ * local/no signal mapping
+ */
+
+
+ void
+TerminalNewMode(f)
+ register int f;
+{
+ static int prevmode = 0;
+#ifndef USE_TERMIO
+ struct tchars tc;
+ struct ltchars ltc;
+ struct sgttyb sb;
+ int lmode;
+#else /* USE_TERMIO */
+ struct termio tmp_tc;
+#endif /* USE_TERMIO */
+ int onoff;
+ int old;
+ cc_t esc;
+
+ globalmode = f&~MODE_FORCE;
+ if (prevmode == f)
+ return;
+
+ /*
+ * Write any outstanding data before switching modes
+ * ttyflush() returns 0 only when there is no more data
+ * left to write out, it returns -1 if it couldn't do
+ * anything at all, otherwise it returns 1 + the number
+ * of characters left to write.
+#ifndef USE_TERMIO
+ * We would really like ask the kernel to wait for the output
+ * to drain, like we can do with the TCSADRAIN, but we don't have
+ * that option. The only ioctl that waits for the output to
+ * drain, TIOCSETP, also flushes the input queue, which is NOT
+ * what we want (TIOCSETP is like TCSADFLUSH).
+#endif
+ */
+ old = ttyflush(SYNCHing|flushout);
+ if (old < 0 || old > 1) {
+#ifdef USE_TERMIO
+ tcgetattr(tin, &tmp_tc);
+#endif /* USE_TERMIO */
+ do {
+ /*
+ * Wait for data to drain, then flush again.
+ */
+#ifdef USE_TERMIO
+ tcsetattr(tin, TCSADRAIN, &tmp_tc);
+#endif /* USE_TERMIO */
+ old = ttyflush(SYNCHing|flushout);
+ } while (old < 0 || old > 1);
+ }
+
+ old = prevmode;
+ prevmode = f&~MODE_FORCE;
+#ifndef USE_TERMIO
+ sb = nttyb;
+ tc = ntc;
+ ltc = nltc;
+ lmode = olmode;
+#else
+ tmp_tc = new_tc;
+#endif
+
+ if (f&MODE_ECHO) {
+#ifndef USE_TERMIO
+ sb.sg_flags |= ECHO;
+#else
+ tmp_tc.c_lflag |= ECHO;
+ tmp_tc.c_oflag |= ONLCR;
+ if (crlf)
+ tmp_tc.c_iflag |= ICRNL;
+#endif
+ } else {
+#ifndef USE_TERMIO
+ sb.sg_flags &= ~ECHO;
+#else
+ tmp_tc.c_lflag &= ~ECHO;
+ tmp_tc.c_oflag &= ~ONLCR;
+# ifdef notdef
+ if (crlf)
+ tmp_tc.c_iflag &= ~ICRNL;
+# endif
+#endif
+ }
+
+ if ((f&MODE_FLOW) == 0) {
+#ifndef USE_TERMIO
+ tc.t_startc = _POSIX_VDISABLE;
+ tc.t_stopc = _POSIX_VDISABLE;
+#else
+ tmp_tc.c_iflag &= ~(IXOFF|IXON); /* Leave the IXANY bit alone */
+ } else {
+ if (restartany < 0) {
+ tmp_tc.c_iflag |= IXOFF|IXON; /* Leave the IXANY bit alone */
+ } else if (restartany > 0) {
+ tmp_tc.c_iflag |= IXOFF|IXON|IXANY;
+ } else {
+ tmp_tc.c_iflag |= IXOFF|IXON;
+ tmp_tc.c_iflag &= ~IXANY;
+ }
+#endif
+ }
+
+ if ((f&MODE_TRAPSIG) == 0) {
+#ifndef USE_TERMIO
+ tc.t_intrc = _POSIX_VDISABLE;
+ tc.t_quitc = _POSIX_VDISABLE;
+ tc.t_eofc = _POSIX_VDISABLE;
+ ltc.t_suspc = _POSIX_VDISABLE;
+ ltc.t_dsuspc = _POSIX_VDISABLE;
+#else
+ tmp_tc.c_lflag &= ~ISIG;
+#endif
+ localchars = 0;
+ } else {
+#ifdef USE_TERMIO
+ tmp_tc.c_lflag |= ISIG;
+#endif
+ localchars = 1;
+ }
+
+ if (f&MODE_EDIT) {
+#ifndef USE_TERMIO
+ sb.sg_flags &= ~CBREAK;
+ sb.sg_flags |= CRMOD;
+#else
+ tmp_tc.c_lflag |= ICANON;
+#endif
+ } else {
+#ifndef USE_TERMIO
+ sb.sg_flags |= CBREAK;
+ if (f&MODE_ECHO)
+ sb.sg_flags |= CRMOD;
+ else
+ sb.sg_flags &= ~CRMOD;
+#else
+ tmp_tc.c_lflag &= ~ICANON;
+ tmp_tc.c_iflag &= ~ICRNL;
+ tmp_tc.c_cc[VMIN] = 1;
+ tmp_tc.c_cc[VTIME] = 0;
+#endif
+ }
+
+ if ((f&(MODE_EDIT|MODE_TRAPSIG)) == 0) {
+#ifndef USE_TERMIO
+ ltc.t_lnextc = _POSIX_VDISABLE;
+#else
+# ifdef VLNEXT
+ tmp_tc.c_cc[VLNEXT] = (cc_t)(_POSIX_VDISABLE);
+# endif
+#endif
+ }
+
+ if (f&MODE_SOFT_TAB) {
+#ifndef USE_TERMIO
+ sb.sg_flags |= XTABS;
+#else
+# ifdef OXTABS
+ tmp_tc.c_oflag |= OXTABS;
+# endif
+# ifdef TABDLY
+ tmp_tc.c_oflag &= ~TABDLY;
+ tmp_tc.c_oflag |= TAB3;
+# endif
+#endif
+ } else {
+#ifndef USE_TERMIO
+ sb.sg_flags &= ~XTABS;
+#else
+# ifdef OXTABS
+ tmp_tc.c_oflag &= ~OXTABS;
+# endif
+# ifdef TABDLY
+ tmp_tc.c_oflag &= ~TABDLY;
+# endif
+#endif
+ }
+
+ if (f&MODE_LIT_ECHO) {
+#ifndef USE_TERMIO
+ lmode &= ~LCTLECH;
+#else
+# ifdef ECHOCTL
+ tmp_tc.c_lflag &= ~ECHOCTL;
+# endif
+#endif
+ } else {
+#ifndef USE_TERMIO
+ lmode |= LCTLECH;
+#else
+# ifdef ECHOCTL
+ tmp_tc.c_lflag |= ECHOCTL;
+# endif
+#endif
+ }
+
+ if (f == -1) {
+ onoff = 0;
+ } else {
+#ifndef USE_TERMIO
+ if (f & MODE_OUTBIN)
+ lmode |= LLITOUT;
+ else
+ lmode &= ~LLITOUT;
+
+ if (f & MODE_INBIN)
+ lmode |= LPASS8;
+ else
+ lmode &= ~LPASS8;
+#else
+ if (f & MODE_INBIN)
+ tmp_tc.c_iflag &= ~ISTRIP;
+ else
+ tmp_tc.c_iflag |= ISTRIP;
+ if (f & MODE_OUTBIN) {
+ tmp_tc.c_cflag &= ~(CSIZE|PARENB);
+ tmp_tc.c_cflag |= CS8;
+ tmp_tc.c_oflag &= ~OPOST;
+ } else {
+ tmp_tc.c_cflag &= ~(CSIZE|PARENB);
+ tmp_tc.c_cflag |= old_tc.c_cflag & (CSIZE|PARENB);
+ tmp_tc.c_oflag |= OPOST;
+ }
+#endif
+ onoff = 1;
+ }
+
+ if (f != -1) {
+#ifdef SIGTSTP
+ static SIG_FUNC_RET susp();
+#endif /* SIGTSTP */
+#ifdef SIGINFO
+ static SIG_FUNC_RET ayt();
+#endif SIGINFO
+
+#ifdef SIGTSTP
+ (void) signal(SIGTSTP, susp);
+#endif /* SIGTSTP */
+#ifdef SIGINFO
+ (void) signal(SIGINFO, ayt);
+#endif SIGINFO
+#if defined(USE_TERMIO) && defined(NOKERNINFO)
+ tmp_tc.c_lflag |= NOKERNINFO;
+#endif
+ /*
+ * We don't want to process ^Y here. It's just another
+ * character that we'll pass on to the back end. It has
+ * to process it because it will be processed when the
+ * user attempts to read it, not when we send it.
+ */
+#ifndef USE_TERMIO
+ ltc.t_dsuspc = _POSIX_VDISABLE;
+#else
+# ifdef VDSUSP
+ tmp_tc.c_cc[VDSUSP] = (cc_t)(_POSIX_VDISABLE);
+# endif
+#endif
+#ifdef USE_TERMIO
+ /*
+ * If the VEOL character is already set, then use VEOL2,
+ * otherwise use VEOL.
+ */
+ esc = (rlogin != _POSIX_VDISABLE) ? rlogin : escape;
+ if ((tmp_tc.c_cc[VEOL] != esc)
+# ifdef VEOL2
+ && (tmp_tc.c_cc[VEOL2] != esc)
+# endif
+ ) {
+ if (tmp_tc.c_cc[VEOL] == (cc_t)(_POSIX_VDISABLE))
+ tmp_tc.c_cc[VEOL] = esc;
+# ifdef VEOL2
+ else if (tmp_tc.c_cc[VEOL2] == (cc_t)(_POSIX_VDISABLE))
+ tmp_tc.c_cc[VEOL2] = esc;
+# endif
+ }
+#else
+ if (tc.t_brkc == (cc_t)(_POSIX_VDISABLE))
+ tc.t_brkc = esc;
+#endif
+ } else {
+#ifdef SIGINFO
+ SIG_FUNC_RET ayt_status();
+
+ (void) signal(SIGINFO, ayt_status);
+#endif SIGINFO
+#ifdef SIGTSTP
+ (void) signal(SIGTSTP, SIG_DFL);
+ (void) sigsetmask(sigblock(0) & ~(1<<(SIGTSTP-1)));
+#endif /* SIGTSTP */
+#ifndef USE_TERMIO
+ ltc = oltc;
+ tc = otc;
+ sb = ottyb;
+ lmode = olmode;
+#else
+ tmp_tc = old_tc;
+#endif
+ }
+#ifndef USE_TERMIO
+ ioctl(tin, TIOCLSET, (char *)&lmode);
+ ioctl(tin, TIOCSLTC, (char *)<c);
+ ioctl(tin, TIOCSETC, (char *)&tc);
+ ioctl(tin, TIOCSETN, (char *)&sb);
+#else
+ if (tcsetattr(tin, TCSADRAIN, &tmp_tc) < 0)
+ tcsetattr(tin, TCSANOW, &tmp_tc);
+#endif
+
+#if (!defined(TN3270)) || ((!defined(NOT43)) || defined(PUTCHAR))
+# if !defined(sysV88)
+ ioctl(tin, FIONBIO, (char *)&onoff);
+ ioctl(tout, FIONBIO, (char *)&onoff);
+# endif
+#endif /* (!defined(TN3270)) || ((!defined(NOT43)) || defined(PUTCHAR)) */
+#if defined(TN3270)
+ if (noasynchtty == 0) {
+ ioctl(tin, FIOASYNC, (char *)&onoff);
+ }
+#endif /* defined(TN3270) */
+
+}
+
+#ifndef B19200
+# define B19200 B9600
+#endif
+
+#ifndef B38400
+# define B38400 B19200
+#endif
+
+/*
+ * This code assumes that the values B0, B50, B75...
+ * are in ascending order. They do not have to be
+ * contiguous.
+ */
+struct termspeeds {
+ long speed;
+ long value;
+} termspeeds[] = {
+ { 0, B0 }, { 50, B50 }, { 75, B75 },
+ { 110, B110 }, { 134, B134 }, { 150, B150 },
+ { 200, B200 }, { 300, B300 }, { 600, B600 },
+ { 1200, B1200 }, { 1800, B1800 }, { 2400, B2400 },
+ { 4800, B4800 }, { 9600, B9600 }, { 19200, B19200 },
+ { 38400, B38400 }, { -1, B38400 }
+};
+
+ void
+TerminalSpeeds(ispeed, ospeed)
+ long *ispeed;
+ long *ospeed;
+{
+ register struct termspeeds *tp;
+ register long in, out;
+
+ out = cfgetospeed(&old_tc);
+ in = cfgetispeed(&old_tc);
+ if (in == 0)
+ in = out;
+
+ tp = termspeeds;
+ while ((tp->speed != -1) && (tp->value < in))
+ tp++;
+ *ispeed = tp->speed;
+
+ tp = termspeeds;
+ while ((tp->speed != -1) && (tp->value < out))
+ tp++;
+ *ospeed = tp->speed;
+}
+
+ int
+TerminalWindowSize(rows, cols)
+ long *rows, *cols;
+{
+#ifdef TIOCGWINSZ
+ struct winsize ws;
+
+ if (ioctl(fileno(stdin), TIOCGWINSZ, (char *)&ws) >= 0) {
+ *rows = ws.ws_row;
+ *cols = ws.ws_col;
+ return 1;
+ }
+#endif /* TIOCGWINSZ */
+ return 0;
+}
+
+ int
+NetClose(fd)
+ int fd;
+{
+ return close(fd);
+}
+
+
+ void
+NetNonblockingIO(fd, onoff)
+ int fd;
+ int onoff;
+{
+ ioctl(fd, FIONBIO, (char *)&onoff);
+}
+
+#if defined(TN3270)
+ void
+NetSigIO(fd, onoff)
+ int fd;
+ int onoff;
+{
+ ioctl(fd, FIOASYNC, (char *)&onoff); /* hear about input */
+}
+
+ void
+NetSetPgrp(fd)
+ int fd;
+{
+ int myPid;
+
+ myPid = getpid();
+ fcntl(fd, F_SETOWN, myPid);
+}
+#endif /*defined(TN3270)*/
+\f
+/*
+ * Various signal handling routines.
+ */
+
+ /* ARGSUSED */
+ static SIG_FUNC_RET
+deadpeer(sig)
+ int sig;
+{
+ setcommandmode();
+ longjmp(peerdied, -1);
+}
+
+ /* ARGSUSED */
+ static SIG_FUNC_RET
+intr(sig)
+ int sig;
+{
+ if (localchars) {
+ intp();
+ return;
+ }
+ setcommandmode();
+ longjmp(toplevel, -1);
+}
+
+ /* ARGSUSED */
+ static SIG_FUNC_RET
+intr2(sig)
+ int sig;
+{
+ if (localchars) {
+#ifdef KLUDGELINEMODE
+ if (kludgelinemode)
+ sendbrk();
+ else
+#endif
+ sendabort();
+ return;
+ }
+}
+
+#ifdef SIGTSTP
+ /* ARGSUSED */
+ static SIG_FUNC_RET
+susp(sig)
+ int sig;
+{
+ if ((rlogin != _POSIX_VDISABLE) && rlogin_susp())
+ return;
+ if (localchars)
+ sendsusp();
+}
+#endif
+
+#ifdef SIGWINCH
+ /* ARGSUSED */
+ static SIG_FUNC_RET
+sendwin(sig)
+ int sig;
+{
+ if (connected) {
+ sendnaws();
+ }
+}
+#endif
+
+#ifdef SIGINFO
+ /* ARGSUSED */
+ static SIG_FUNC_RET
+ayt(sig)
+ int sig;
+{
+ if (connected)
+ sendayt();
+ else
+ ayt_status();
+}
+#endif
+
+\f
+ void
+sys_telnet_init()
+{
+ (void) signal(SIGINT, intr);
+ (void) signal(SIGQUIT, intr2);
+ (void) signal(SIGPIPE, deadpeer);
+#ifdef SIGWINCH
+ (void) signal(SIGWINCH, sendwin);
+#endif
+#ifdef SIGTSTP
+ (void) signal(SIGTSTP, susp);
+#endif
+#ifdef SIGINFO
+ (void) signal(SIGINFO, ayt);
+#endif
+
+ setconnmode(0);
+
+ NetNonblockingIO(net, 1);
+
+#if defined(TN3270)
+ if (noasynchnet == 0) { /* DBX can't handle! */
+ NetSigIO(net, 1);
+ NetSetPgrp(net);
+ }
+#endif /* defined(TN3270) */
+
+#if defined(SO_OOBINLINE)
+ if (SetSockOpt(net, SOL_SOCKET, SO_OOBINLINE, 1) == -1) {
+ perror("SetSockOpt");
+ }
+#endif /* defined(SO_OOBINLINE) */
+}
+
+/*
+ * Process rings -
+ *
+ * This routine tries to fill up/empty our various rings.
+ *
+ * The parameter specifies whether this is a poll operation,
+ * or a block-until-something-happens operation.
+ *
+ * The return value is 1 if something happened, 0 if not.
+ */
+
+ int
+process_rings(netin, netout, netex, ttyin, ttyout, poll)
+ int poll; /* If 0, then block until something to do */
+{
+ register int c;
+ /* One wants to be a bit careful about setting returnValue
+ * to one, since a one implies we did some useful work,
+ * and therefore probably won't be called to block next
+ * time (TN3270 mode only).
+ */
+ int returnValue = 0;
+ static struct timeval TimeValue = { 0 };
+
+ if (netout) {
+ FD_SET(net, &obits);
+ }
+ if (ttyout) {
+ FD_SET(tout, &obits);
+ }
+#if defined(TN3270)
+ if (ttyin) {
+ FD_SET(tin, &ibits);
+ }
+#else /* defined(TN3270) */
+ if (ttyin) {
+ FD_SET(tin, &ibits);
+ }
+#endif /* defined(TN3270) */
+#if defined(TN3270)
+ if (netin) {
+ FD_SET(net, &ibits);
+ }
+# else /* !defined(TN3270) */
+ if (netin) {
+ FD_SET(net, &ibits);
+ }
+# endif /* !defined(TN3270) */
+ if (netex) {
+ FD_SET(net, &xbits);
+ }
+ if ((c = select(16, &ibits, &obits, &xbits,
+ (poll == 0)? (struct timeval *)0 : &TimeValue)) < 0) {
+ if (c == -1) {
+ /*
+ * we can get EINTR if we are in line mode,
+ * and the user does an escape (TSTP), or
+ * some other signal generator.
+ */
+ if (errno == EINTR) {
+ return 0;
+ }
+# if defined(TN3270)
+ /*
+ * we can get EBADF if we were in transparent
+ * mode, and the transcom process died.
+ */
+ if (errno == EBADF) {
+ /*
+ * zero the bits (even though kernel does it)
+ * to make sure we are selecting on the right
+ * ones.
+ */
+ FD_ZERO(&ibits);
+ FD_ZERO(&obits);
+ FD_ZERO(&xbits);
+ return 0;
+ }
+# endif /* defined(TN3270) */
+ /* I don't like this, does it ever happen? */
+ printf("sleep(5) from telnet, after select\r\n");
+ sleep(5);
+ }
+ return 0;
+ }
+
+ /*
+ * Any urgent data?
+ */
+ if (FD_ISSET(net, &xbits)) {
+ FD_CLR(net, &xbits);
+ SYNCHing = 1;
+ (void) ttyflush(1); /* flush already enqueued data */
+ }
+
+ /*
+ * Something to read from the network...
+ */
+ if (FD_ISSET(net, &ibits)) {
+ int canread;
+
+ FD_CLR(net, &ibits);
+ canread = ring_empty_consecutive(&netiring);
+#if !defined(SO_OOBINLINE)
+ /*
+ * In 4.2 (and some early 4.3) systems, the
+ * OOB indication and data handling in the kernel
+ * is such that if two separate TCP Urgent requests
+ * come in, one byte of TCP data will be overlaid.
+ * This is fatal for Telnet, but we try to live
+ * with it.
+ *
+ * In addition, in 4.2 (and...), a special protocol
+ * is needed to pick up the TCP Urgent data in
+ * the correct sequence.
+ *
+ * What we do is: if we think we are in urgent
+ * mode, we look to see if we are "at the mark".
+ * If we are, we do an OOB receive. If we run
+ * this twice, we will do the OOB receive twice,
+ * but the second will fail, since the second
+ * time we were "at the mark", but there wasn't
+ * any data there (the kernel doesn't reset
+ * "at the mark" until we do a normal read).
+ * Once we've read the OOB data, we go ahead
+ * and do normal reads.
+ *
+ * There is also another problem, which is that
+ * since the OOB byte we read doesn't put us
+ * out of OOB state, and since that byte is most
+ * likely the TELNET DM (data mark), we would
+ * stay in the TELNET SYNCH (SYNCHing) state.
+ * So, clocks to the rescue. If we've "just"
+ * received a DM, then we test for the
+ * presence of OOB data when the receive OOB
+ * fails (and AFTER we did the normal mode read
+ * to clear "at the mark").
+ */
+ if (SYNCHing) {
+ int atmark;
+ static int bogus_oob = 0, first = 1;
+
+ ioctl(net, SIOCATMARK, (char *)&atmark);
+ if (atmark) {
+ c = recv(net, netiring.supply, canread, MSG_OOB);
+ if ((c == -1) && (errno == EINVAL)) {
+ c = recv(net, netiring.supply, canread, 0);
+ if (clocks.didnetreceive < clocks.gotDM) {
+ SYNCHing = stilloob(net);
+ }
+ } else if (first && c > 0) {
+ /*
+ * Bogosity check. Systems based on 4.2BSD
+ * do not return an error if you do a second
+ * recv(MSG_OOB). So, we do one. If it
+ * succeeds and returns exactly the same
+ * data, then assume that we are running
+ * on a broken system and set the bogus_oob
+ * flag. (If the data was different, then
+ * we probably got some valid new data, so
+ * increment the count...)
+ */
+ int i;
+ i = recv(net, netiring.supply + c, canread - c, MSG_OOB);
+ if (i == c &&
+ bcmp(netiring.supply, netiring.supply + c, i) == 0) {
+ bogus_oob = 1;
+ first = 0;
+ } else if (i < 0) {
+ bogus_oob = 0;
+ first = 0;
+ } else
+ c += i;
+ }
+ if (bogus_oob && c > 0) {
+ int i;
+ /*
+ * Bogosity. We have to do the read
+ * to clear the atmark to get out of
+ * an infinate loop.
+ */
+ i = read(net, netiring.supply + c, canread - c);
+ if (i > 0)
+ c += i;
+ }
+ } else {
+ c = recv(net, netiring.supply, canread, 0);
+ }
+ } else {
+ c = recv(net, netiring.supply, canread, 0);
+ }
+ settimer(didnetreceive);
+#else /* !defined(SO_OOBINLINE) */
+ c = recv(net, netiring.supply, canread, 0);
+#endif /* !defined(SO_OOBINLINE) */
+ if (c < 0 && errno == EWOULDBLOCK) {
+ c = 0;
+ } else if (c <= 0) {
+ return -1;
+ }
+ if (netdata) {
+ Dump('<', netiring.supply, c);
+ }
+ if (c)
+ ring_supplied(&netiring, c);
+ returnValue = 1;
+ }
+
+ /*
+ * Something to read from the tty...
+ */
+ if (FD_ISSET(tin, &ibits)) {
+ FD_CLR(tin, &ibits);
+ c = TerminalRead(ttyiring.supply, ring_empty_consecutive(&ttyiring));
+ if (c < 0 && errno == EWOULDBLOCK) {
+ c = 0;
+ } else {
+ /* EOF detection for line mode!!!! */
+ if ((c == 0) && MODE_LOCAL_CHARS(globalmode) && isatty(tin)) {
+ /* must be an EOF... */
+ *ttyiring.supply = termEofChar;
+ c = 1;
+ }
+ if (c <= 0) {
+ return -1;
+ }
+ if (termdata) {
+ Dump('<', ttyiring.supply, c);
+ }
+ ring_supplied(&ttyiring, c);
+ }
+ returnValue = 1; /* did something useful */
+ }
+
+ if (FD_ISSET(net, &obits)) {
+ FD_CLR(net, &obits);
+ returnValue |= netflush();
+ }
+ if (FD_ISSET(tout, &obits)) {
+ FD_CLR(tout, &obits);
+ returnValue |= (ttyflush(SYNCHing|flushout) > 0);
+ }
+
+ return returnValue;
+}
--- /dev/null
+protocol The command is used to communicate with another host
+using the protocol. If is invoked without the argument, it
+enters command mode, indicated by its prompt In this mode, it
+accepts and executes the commands listed below. If it is invoked
+with arguments, it performs an command with those arguments.
+Options: Use an eight bit data path. This will cause an attempt
+to negotiate the BINARY option on both input and output. The
+option stops any character from being recognized as an escape
+character. Do not attempt to do automatic login to the remote
+system. Use an eight bit data path on output. This causes the
+BINARY option to be negotiated on output. Disable the type of
+authentication. Attempt automatic login. Currently, this sends
+the user name via the USER variable of the ENVIRON option if sup-
+ported by the remote system. The name used is that of the
+current user as returned by if it agrees with the current user
+ID, otherwise it is the name associated with the user ID. The
+flag disables the reading of the users (See the command below.)
+Sets the initial value of the toggle to Sets the initial telnet
+escape character to If is ommitted, then there will be no escape
+character. If Kerberos authentication is being used, the option
+requests that obtain tickets for the remote host in realm instead
+of the remote host's realm as determined by When connecting to
+the remote system, if the remote system understands the ENVIRON
+option, then will be sent to the remote system as the value for
+the variable USER. This option implies the option. This option
+may also be used with the command. Opens for recording trace
+information. See the command below. Use a user interface simi-
+lar to In this mode, the escape character is set to the tilde
+(``~'') character, unless modified by the flag. Turn on encryp-
+tion of the data stream, if possible. Indicates the official
+name, an alias, or the Internet address of a remote host. Indi-
+cates a port number (address of an application) or name. If a
+number is not specified, the default port is used. Port names
+are mapped to port numbers via the /etc/services file. Normally
+when a port number is specified, will not send out any initial
+option negotiation. If the port number/name is preceded by a
+minus sign, then the initial option negotiation will be sent.
+When in mode, a line of the form ``~.'' disconnects from the
+remote host, where ``~'' is the escape character. Similarly, the
+line ``~^Z'' will suspend the session. The line ``~^]'' will
+escape to the normal escape prompt. Once a connection has been
+opened, will attempt to enable the option. If this fails, then
+will revert to one of two input modes: either character at a time
+or old line by line depending on what the remote system supports.
+When is enabled, character processing is done on the local sys-
+tem, under the control of the remote system. When input editing
+or character echoing is to be disabled, the remote system will
+relay that information. The remote system will also relay
+changes to any special characters that happen on the remote sys-
+tem, so that they can take effect on the local system. In char-
+acter at a time mode, most text typed is immediately sent to the
+remote host for processing. In old line by line mode, all text
+is echoed locally, and (normally) only completed lines are sent
+to the remote host. The local echo character (initially ^E) may
+be used to turn off and on the local echo (this would mostly be
+used to enter passwords without the password being echoed). If
+the option is enabled, or if the toggle is TRUE (the default for
+old line by line; see below), the user's and characters are
+trapped locally, and sent as protocol sequences to the remote
+side. If has ever been enabled, then the user's and are also
+sent as protocol sequences, and is sent as a instead of There are
+options (see and below) which cause this action to flush subse-
+quent output to the terminal (until the remote host acknowledges
+the sequence) and flush previous terminal input (in the case of
+and While connected to a remote host, command mode may be entered
+by typing the escape character (initially ^ ). When in command
+mode, the normal terminal editing conventions are available. The
+following commands are available. Only enough of each command to
+uniquely identify it need be typed (this is also true for most of
+the arguments to the commands). The command is used to manipu-
+late the the information that my be sent through the option.
+Valid arguments for the auth command are: Disable the specified
+of authentication. A list of available types can be gotten by
+doing an command. Enable the specified of authentication. A
+list of available types can be gotten by doing an command. List
+the current status of the various types of authentication. Close
+a session and return to command mode. Displays all, or some, of
+the and values (see below). The command is used to manipulate
+the the information that my be sent through the option.
+Valid arguments for the encrypt command are: Disable the speci-
+fied of encryption. If the or is not specified, both input and
+output will be disabled. A list of available types can be gotten
+by doing an command. Enable the specified of encryption. If or
+is not specified, both input and output will be enabled. A list
+of available types can be gotten by doing an command. Set the
+default type of encryption to be used with later or commands.
+Attempt to start encryption. If or is not specified, encryption
+of both input and output will be attempted. The command must
+have been used to set the encryption type. Stop encryption. If
+or is not specified, encryption will be stopped on both input and
+output. This is the same as the command. This is the same as
+the command. This is the same as the command. This is the same
+as the command. List the current status of encryption. The com-
+mand is used to manipulate the the variables that my be sent
+through the option. The initial set of variables is taken from
+the users environment, with only the and variables being exported
+by default. The variable is also exported if the or options are
+used.
+Valid arguments for the environ command are: Define the variable
+to have a value of Any variables defined by this command are
+automatically exported. The may be enclosed in single or double
+quotes so that tabs and spaces may be included. Remove from the
+list of environment variables. Mark the variable to be exported
+to the remote side. Mark the variable to not be exported unless
+explicitly asked for by the remote side. List the current set of
+environment variables. Those marked with a * will be sent
+automatically, other variables will only be sent if explicitly
+requested. Prints out help information for the command. Send
+the option to the remote side. This is similar to doing a com-
+mand, however if the remote side does not support the option,
+then nothing will happen. If, however, the remote side does sup-
+port the option, then this command should cause the remote side
+to close the connection. In addition, if the remote side sup-
+ports the concept of suspending a users session for later re-
+attachement, the option indicates that the session should be ter-
+minated immediately. is one of several options, depending on the
+state of the session. The remote host is asked for permission to
+go into the requested mode. If the remote host is capable of
+entering that mode, the requested mode will be entered. Disable
+the option, or, if the remote side does not understand the
+option, then enter character at a time mode. Enable the option,
+or, if the remote side does not understand the option, then
+attempt to enter old-line-by-line mode. Attempt to enable (dis-
+able) the mode of the option. This requires that the option be
+enabled. Attempt to enable (disable) the mode of the option.
+This requires that the option be enabled. Attempt to enable
+(disable) the mode of the option. This requires that the option
+be enabled. Attempt to enable (disable) the mode of the option.
+This requires that the option be enabled. Prints out help infor-
+mation for the command. Open a connection to the named host. If
+no port number is specified, will attempt to contact a server at
+the default port. The host specification may be either a host
+name (see or an Internet address specified in the dot notation
+(see The option may be used to specify the user name to be passed
+to the remote system via the option. When connecting to a non-
+standard port, omits any automatic initiation of options. When
+the port number is preceded by a minus sign, the initial option
+negotiation is done. After establishing a connection, if the
+variable is not enabled (see the command below), the file in the
+users home directory is opened. Lines beginning with a # are
+comment lines. Blank lines are ignored. Lines that begin
+without whitespace are the start of a machine entry. The first
+thing on the line is the name of the machine that is being con-
+nected to. The rest of the line, and successive lines that begin
+with whitespace are assumed to be commands and are processed as
+if they had been typed in manually to the command prompt. The
+special machine name is used to specify commands that should be
+executed for all machines. There may be more than one entry for
+a machine; all matches will the specified machine name will be
+executed. Close any open session and exit An end of file (in
+command mode) will also close a session and exit. Sends one or
+more special character sequences to the remote host. The follow-
+ing are the arguments which may be specified (more than one argu-
+ment may be specified at a time): Sends the (ABORT processes)
+sequence. Sends the (Abort Output) sequence, which should cause
+the remote system to flush all output the remote system the
+user's terminal. Sends the (Are You There) sequence, to which
+the remote system may or may not choose to respond. Sends the
+(Break) sequence, which may have significance to the remote sys-
+tem. Sends the (Erase Character) sequence, which should cause
+the remote system to erase the last character entered. Sends the
+(Erase Line) sequence, which should cause the remote system to
+erase the line currently being entered. Sends the (End Of File)
+sequence. Sends the (End of Record) sequence. Sends the current
+escape character (initially ^). Sends the (Go Ahead) sequence,
+which likely has no significance to the remote system. If the
+remote side supports the command, will send the subnegotiation to
+request that the server send its current option status. Sends
+the (Interrupt Process) sequence, which should cause the remote
+system to abort the currently running process. Sends the (No
+OPeration) sequence. Sends the (SUSPend process) sequence.
+Sends the sequence. This sequence causes the remote system to
+discard all previously typed (but not yet read) input. This
+sequence is sent as TCP urgent data (and may not work if the
+remote system is a 4.2 BSD system -- if it doesn't work, a lower
+case r may be echoed on the terminal). Prints out help informa-
+tion for the command. The command will set any one of a number
+of variables to a specific value or to TRUE. The special value
+turns off the function associated with the variable, this is
+equivalent to using the command. The command will disable or set
+to FALSE any of the specified functions. The values of variables
+may be interrogated with the command. The variables which may be
+set or unset, but not toggled, are listed here. In addition, any
+of the variables for the command may be explicitly set or unset
+using the and commands. If is in mode, or is enabled, and the
+character is typed, a sequence (see above) is sent to the remote
+host. The initial value for the ayt character is taken to be the
+terminal's character. This is the value (initially ^E) which,
+when in line by line mode, toggles between doing local echoing of
+entered characters (for normal processing), and suppressing echo-
+ing of entered characters (for entering, say, a password). If is
+operating in or old line by line mode, entering this character as
+the first character on a line will cause this character to be
+sent to the remote system. The initial value of the eof charac-
+ter is taken to be the terminal's character. If is in mode (see
+below), if is operating in character at a time mode, then when
+this character is typed, a sequence (see above) is sent to the
+remote system. The initial value for the erase character is
+taken to be the terminal's character. This is the escape charac-
+ter (initially ^[) which causes entry into command mode (when
+connected to a remote system). If is in mode (see below) and the
+character is typed, a sequence (see above) is sent to the remote
+host. The initial value for the flush character is taken to be
+the terminal's character. If is operating in these are the char-
+acters that, when typed, cause partial lines to be forwarded to
+the remote system. The initial value for the forw1 and forw2
+characters are taken from the terminal's and characters. If is
+in mode (see below) and the character is typed, a sequence (see
+above) is sent to the remote host. The initial value for the
+interrupt character is taken to be the terminal's character. If
+is in mode (see below), if is operating in character at a time
+mode, then when this character is typed, a sequence (see above)
+is sent to the remote system. The initial value for the kill
+character is taken to be the terminal's character. If is operat-
+ing in or old line by line mode, then this character is taken to
+be the terminal's character. The initial value for the lnext
+character is taken to be the terminal's character. If is in mode
+(see below) and the character is typed, a sequence (see above) is
+sent to the remote host. The initial value for the quit charac-
+ter is taken to be the terminal's character. If is operating in
+or old line by line mode, then this character is taken to be the
+terminal's character. The initial value for the reprint charac-
+ter is taken to be the terminal's character. This is the rlogin
+escape character. If set, the normal character will be ignored
+unless it is preceded by this character at the beginning of a
+line. This character, at the beginning of a line, followed by a
+``.'' will close the connection; when followed by a ``^Z'' it
+will suspend the command. The initial state is to have the
+escape character disabled. If the option has been enabled, then
+this character is taken to be the terminal's character. The ini-
+tial value for the kill character is taken to be the terminal's
+character. If the option has been enabled, then this character
+is taken to be the terminal's character. The initial value for
+the kill character is taken to be the terminal's character. If
+is in mode, or is enabled, and the character is typed, a sequence
+(see above) is sent to the remote host. The initial value for
+the suspend character is taken to be the terminal's character.
+This is the file to which the output, caused by or tracing being
+TRUE, will be written. If it is set to then tracing information
+will be written to standard output (the default). If is operat-
+ing in or old line by line mode, then this character is taken to
+be the terminal's character. The initial value for the worderase
+character is taken to be the terminal's character. Displays the
+legal commands. The command (Set Local Characters) is used to
+set or change the state of the the special characters when the
+option has been enabled. Special characters are characters that
+get mapped to commands sequences (like or or line editing charac-
+ters (like and By default, the local special characters are
+exported. Switch to the local defaults for the special charac-
+ters. The local default characters are those of the local termi-
+nal at the time when was started. Switch to the remote defaults
+for the special characters. The remote default characters are
+those of the remote system at the time when the connection was
+established. Verify the current settings for the current special
+characters. The remote side is requested to send all the current
+special character settings, and if there are any discrepancies
+with the local side, the local side will switch to the remote
+value. Prints out help information for the command. Show the
+current status of This includes the peer one is connected to, as
+well as the current mode. Toggle (between TRUE and FALSE) vari-
+ous flags that control how responds to events. These flags may
+be set explicitly to TRUE or FALSE using the and commands listed
+above. More than one argument may be specified. The state of
+these flags may be interrogated with the command. Valid
+arguments are: Turn on debugging information for the authentica-
+tion code. If and are both TRUE, then when the or characters are
+recognized (and transformed into sequences; see above for
+details), refuses to display any data on the user's terminal
+until the remote system acknowledges (via a option) that it has
+processed those sequences. The initial value for this toggle is
+TRUE if the terminal user had not done an "stty noflsh", other-
+wise FALSE (see When the option is negotiated, by default the
+actual encryption (decryption) of the data stream does not
+automatically start. The command states that encryption of the
+output (input) stream should be enabled as soon as possible. If
+the option is supported by the remote side, then will attempt to
+use it to perform automatic authentication. If the option is not
+supported, then the users login name will be propagated via the
+option. This command is the same as specifying option on the
+command. If and are both TRUE, then when either the or charac-
+ters is typed (see above for descriptions of the and characters),
+the resulting sequence sent is followed by the sequence. This
+procedure cause the remote system to begin throwing away all pre-
+viously typed input until both of the sequences have been read
+and acted upon. The initial value of this toggle is FALSE.
+Enable or disable the option on both input and output. Enable or
+disable the option on input. Enable or disable the option on
+output. If this is TRUE, then carriage returns will be sent as
+<CR><LF>. If this is FALSE, then carriage returns will be send
+as <CR><NUL>. The initial value for this toggle is FALSE. Tog-
+gle carriage return mode. When this mode is enabled, most car-
+riage return characters received from the remote host will be
+mapped into a carriage return followed by a line feed. This mode
+does not affect those characters typed by the user, only those
+received from the remote host. This mode is not very useful
+unless the remote host only sends carriage return, but never line
+feed. The initial value for this toggle is FALSE. Toggles
+socket level debugging (useful only to the The initial value for
+this toggle is FALSE. Turn on debugging information for the
+encryption code. If this is TRUE, then the and characters (see
+above) are recognized locally, and transformed into (hopefully)
+appropriate control sequences (respectively and see above). The
+initial value for this toggle is TRUE in old line by line mode,
+and FALSE in character at a time mode. When the option is
+enabled, the value of is ignored, and assumed to always be TRUE.
+If has ever been enabled, then is sent as and suspend are sent as
+see above). Toggles the display of all network data (in hexade-
+cimal format). The initial value for this toggle is FALSE. Tog-
+gles the display of some internal protocol processing (having to
+do with options). The initial value for this toggle is FALSE.
+When the or toggle is enabled, if is enabled the output from the
+and command will be formated in a more user readable format.
+Spaces are put between each character in the output, and the
+beginning of any escape sequence is preceded by a '*' to aid in
+locating them. When the toggle is TRUE, then will skip the read-
+ing of the file in the users home directory when connections are
+opened. The initial value for this toggle is FALSE. Toggles the
+display of all terminal data (in hexadecimal format). The ini-
+tial value for this toggle is FALSE. When the toggle is TRUE,
+then will print out a message each time encryption is enabled or
+disabled. The initial value for this toggle is FALSE. Displays
+the legal commands. Suspend This command only works when the
+user is using the Execute a single command in a subshell on the
+local system. If is omitted, then an interactive subshell is
+invoked. Get help. With no arguments, prints a help summary.
+If a command is specified, will print the help information for
+just that command. uses at least the and environment variables.
+Other environment variables may be propagated to the other side
+via the option. user customized telnet startup values appeared
+in 4.2 BSD. On some remote systems, echo has to be turned off
+manually when in old line by line mode. In old line by line mode
+or the terminal's character is only recognized (and sent to the
+remote system) when it is the first character on a line.
--- /dev/null
+.\" Copyright (c) 1983, 1990 The Regents of the University of California.
+.\" All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms are permitted provided
+.\" that: (1) source distributions retain this entire copyright notice and
+.\" comment, and (2) distributions including binaries display the following
+.\" acknowledgement: ``This product includes software developed by the
+.\" University of California, Berkeley and its contributors'' in the
+.\" documentation or other materials provided with the distribution and in
+.\" all advertising materials mentioning features or use of this software.
+.\" Neither the name of the University nor the names of its contributors may
+.\" be used to endorse or promote products derived from this software without
+.\" specific prior written permission.
+.\" THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
+.\" WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
+.\" MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+.\"
+.\" @(#)telnet.1 6.13 (Berkeley) 7/28/90
+.\"
+.Dd July 28, 1990
+.Dt TELNET 1
+.Os BSD 4.2
+.Sh NAME
+.Nm telnet
+.Nd User interface to the
+.Li TELNET
+protocol
+.Sh SYNOPSIS
+.Nm telnet
+.Op Fl 8
+.Op Fl E
+.Op Fl K
+.Op Fl L
+.Op Fl X Ar atype
+.Op Fl a
+.Op Fl c
+.Op Fl d
+.Op Fl e Ar escapechar
+.Op Fl k Ar realm
+.Op Fl l Ar user
+.Op Fl n Ar tracefile
+.Op Fl r
+.Op Fl x
+.Ob
+.Ar host
+.Op port
+.Oe
+.Sh DESCRIPTION
+The
+.Nm telnet
+command
+is used to communicate with another host using the
+.Li TELNET
+protocol.
+If
+.Nm telnet
+is invoked without the
+.Ar host
+argument, it enters command mode,
+indicated by its prompt
+.Pq Nm telnet\&> .
+In this mode, it accepts and executes the commands listed below.
+If it is invoked with arguments, it performs an
+.Ic open
+command with those arguments.
+.Pp
+Options:
+.Tw Fl
+.Tp Fl 8
+Use an eight bit data path. This will cause
+an attempt to negotiate the BINARY option on both
+input and output.
+.Tp Fl E
+The
+.Fl E
+option stops any character from being recognized as an escape character.
+.Tp Fl K
+Do not attempt to do automatic login to the
+remote system.
+.Tp Fl L
+Use an eight bit data path on output.
+This causes the BINARY option to be negotiated
+on output.
+.Tp Cx Fl X
+.Cx \&\ \&
+.Ar atype
+.Cx
+Disable the
+.Ar atype
+type of authentication.
+.Tp Fl a
+Attempt automatic login.
+Currently, this sends the user name via the USER variable
+of the ENVIRON option if supported by the remote system.
+The name used is that of the current user as returned by
+.Xr getlogin 2
+if it agrees with the current user ID,
+otherwise it is the name associated with the user ID.
+.Tp Fl c
+The
+.Fl c
+flag disables the reading of the users
+.Pa \&.telnetrc.
+(See the
+.Ic toggle
+.Ic skiprc
+command below.)
+.Tp Fl d
+Sets the initial value of the
+.Ic debug
+toggle to
+.Li TRUE
+.Tp Cx Fl e
+.Cx \&\ \&
+.Ar escape char
+.Cx
+Sets the initial
+.Nm
+.B telnet
+escape character to
+.Ar escape char.
+If
+.Ar escape char
+is ommitted, then
+there will be no escape character.
+.Tp Cx Fl k
+.Cx \&\ \&
+.Ar realm
+.Cx
+If Kerberos authentication is being used, the
+.Fl k
+option requests that
+.Nm telnet
+obtain tickets for the remote host in realm
+.Ar realm
+instead of the remote host's
+realm as determined by
+.Xr krb_realmofhost 3 .
+.Tp Cx Fl l
+.Cx \&\ \&
+.Ar user
+.Cx
+When connecting to the remote system, if the remote system
+understands the ENVIRON option, then
+.Ar user
+will be sent to the remote system as the value for the variable USER.
+This option implies the
+.Fl a
+option.
+This option may also be used with the
+.Ic open
+command.
+.Tp Cx Fl n
+.Cx \&\ \&
+.Ar tracefile
+.Cx
+Opens
+.Ar tracefile
+for recording trace information.
+See the
+.Ic set tracefile
+command below.
+.Tp Fl r
+Use a user interface similar to
+.Xr rlogin 1 .
+In this mode, the escape character is set to the tilde (``~'')
+character, unless modified by the
+.Fl e
+flag.
+.Tp Fl x
+Turn on encryption of the data stream, if possible.
+.Tp Ar host
+Indicates the official name, an alias, or the Internet address
+of a remote host.
+.Tp Ar port
+Indicates a port number (address of an application) or name. If a number is
+not specified, the default
+.Nm telnet
+port is used.
+Port names are mapped to port numbers via the
+/etc/services
+file.
+Normally when a port number is specified,
+.Nm telnet
+will not send out any initial
+.Li TELNET
+option negotiation.
+If the port number/name is preceded by
+a minus sign, then
+the initial
+.Li TELNET
+option negotiation will be sent.
+.Tp
+.Pp
+When in
+.Nm rlogin
+mode, a line of the form ``~.'' disconnects from the remote host,
+where ``~'' is the
+.Nm
+escape character.
+Similarly, the line ``~^Z'' will suspend the
+.Nm telnet
+session.
+The line ``~^]'' will escape to the normal
+.Nm telnet
+escape prompt.
+.Pp
+Once a connection has been opened,
+.Nm telnet
+will attempt to enable the
+.Li TELNET LINEMODE
+option.
+If this fails, then
+.Nm telnet
+will revert to one of two input modes:
+either \*(Lqcharacter at a time\*(Rq
+or \*(Lqold line by line\*(Rq
+depending on what the remote system supports.
+.Pp
+When
+.Li LINEMODE
+is enabled, character processing is done on the
+local system, under the control of the remote system. When input
+editing or character echoing is to be disabled, the remote system
+will relay that information. The remote system will also relay
+changes to any special characters that happen on the remote
+system, so that they can take effect on the local system.
+.Pp
+In \*(Lqcharacter at a time\*(Rq mode, most
+text typed is immediately sent to the remote host for processing.
+.Pp
+In \*(Lqold line by line\*(Rq mode, all text is echoed locally,
+and (normally) only completed lines are sent to the remote host.
+The \*(Lqlocal echo character\*(Rq (initially \*(Lq^E\*(Rq) may be used
+to turn off and on the local echo
+(this would mostly be used to enter passwords
+without the password being echoed).
+.Pp
+If the
+.Li LINEMODE
+option is enabled, or if the
+.Ic localchars
+toggle is TRUE (the default for \*(Lqold line by line\*(Lq; see below),
+the user's
+.Ic quit ,
+.Ic intr ,
+and
+.Ic flush
+characters are trapped locally, and sent as
+.Li TELNET
+protocol sequences to the remote side.
+If
+.Li LINEMODE
+has ever been enabled, then the user's
+.Ic susp
+and
+.Ic eof
+are also sent as
+.Li TELNET
+protocol sequences,
+and
+.Ic quit
+is sent as a
+.Li TELNET ABORT
+instead of
+.Li BREAK
+There are options (see
+.Ic toggle
+.Ic autoflush
+and
+.Ic toggle
+.Ic autosynch
+below)
+which cause this action to flush subsequent output to the terminal
+(until the remote host acknowledges the
+.Li TELNET
+sequence) and flush previous terminal input
+(in the case of
+.Ic quit
+and
+.Ic intr ) .
+.Pp
+While connected to a remote host,
+.Nm telnet
+command mode may be entered by typing the
+.Nm telnet
+\*(Lqescape character\*(Rq (initially \*(Lq^
+\*(Rq).
+When in command mode, the normal terminal editing conventions are available.
+.Pp
+The following
+.Nm telnet
+commands are available.
+Only enough of each command to uniquely identify it need be typed
+(this is also true for most of the arguments to the
+commands).
+.Pp
+.Tw Ic
+.\" ######## BEGIN the "auth" command
+.Tp Cx Ic auth
+.Cx \&\ \&
+.Ar arguments...
+.Cx
+The
+.Ic auth
+command is used to manipulate the
+the information that my be sent through the
+.Li TELNET AUTHENTICATE
+option.
+.br
+Valid arguments for the \fBauth\fP command are:
+.Tw Fl
+.Tp Cx Ic disable
+.Cx \&\ \&
+.Ar type
+.Cx
+Disable the specified
+.Ar type
+of authentication.
+A list of available types can be gotten by
+doing an
+.Ic auth
+.Ic disable
+.Ic ?
+command.
+.Tp Cx Ic enable
+.Cx \&\ \&
+.Ar type
+.Cx
+Enable the specified
+.Ar type
+of authentication.
+A list of available types can be gotten by
+doing an
+.Ic auth
+.Ic enable
+.Ic ?
+command.
+.Tp Ic status
+List the current status of the various
+types of authentication.
+.Tp
+.\" ######## END the "auth" command
+.\"
+.\" ######## BEGIN the "close" command
+.Tp Ic close
+Close a
+.Li TELNET
+session and return to command mode.
+.\" ######## END the "close" command
+.\"
+.\" ######## BEGIN the "display" command
+.Tp Cx Ic display
+.Cx \&\ \&
+.Ar argument ...
+.Cx
+Displays all, or some, of the
+.Ic set
+and
+.Ic toggle
+values (see below).
+.\" ######## END the "display" command
+.\"
+.\" ######## BEGIN the "encrypt" command
+.Tp Cx Ic encrypt
+.Cx \&\ \&
+.Ar arguments...
+.Cx
+The
+.Ic encrypt
+command is used to manipulate the
+the information that my be sent through the
+.Li TELNET ENCRYPT
+option.
+.br
+Valid arguments for the \fBencrypt\fP command are:
+.Tw Fl
+.Tp Cx Ic disable
+.Cx \&\ \&
+.Ar type
+.Op input|output
+.Cx
+Disable the specified
+.Ar type
+of encryption.
+If the
+.Op input
+or
+.Op output
+is not specified, both input and output will be disabled.
+A list of available types can be gotten by
+doing an
+.Ic encrypt
+.Ic disable
+.Ic ?
+command.
+.Tp Cx Ic enable
+.Cx \&\ \&
+.Ar type
+.Op input|output
+.Cx
+Enable the specified
+.Ar type
+of encryption.
+If
+.Op input
+or
+.Op output
+is not specified, both input and output will be enabled.
+A list of available types can be gotten by
+doing an
+.Ic encrypt
+.Ic enable
+.Ic ?
+command.
+.Tp Cx Ic type
+.Cx \&\ \&
+.Ar type
+.Cx
+Set the default type of encryption to be used with later
+.Ic encrypt start
+or
+.Ic encrypt stop
+commands.
+.Tp Cx Ic start
+.Op input|output
+.Cx
+Attempt to start encryption.
+If
+.Op input
+or
+.Op output
+is not specified, encryption of both input and output will be attempted.
+The
+.Ic encrypt type
+command must have been used to set the encryption type.
+.Tp Cx Ic stop
+.Op input|output
+.Cx
+Stop encryption.
+If
+.Op input
+or
+.Op output
+is not specified, encryption will be stopped on both input and output.
+.Tp Ic input
+This is the same as the
+.Ic encrypt start input
+command.
+.Tp Ic -input
+This is the same as the
+.Ic encrypt stop input
+command.
+.Tp Ic output
+This is the same as the
+.Ic encrypt start output
+command.
+.Tp Ic -output
+This is the same as the
+.Ic encrypt stop output
+command.
+.Tp Ic status
+List the current status of encryption.
+.Tp
+.\" ######## END the "encrypt" command
+.\"
+.\" ######## BEGIN the "environ" command
+.Tp Cx Ic environ
+.Cx \&\ \&
+.Ar arguments...
+.Cx
+The
+.Ic environ
+command is used to manipulate the
+the variables that my be sent through the
+.Li TELNET ENVIRON
+option.
+The initial set of variables is taken from the users
+environment, with only the
+.Ev DISPLAY
+and
+.Ev PRINTER
+variables being exported by default.
+The
+.Ev USER
+variable is also exported if the
+.Fl a
+or
+.Fl l
+options are used.
+.br
+Valid arguments for the \fBenviron\fP command are:
+.Tw Fl
+.Tp Cx Ic define
+.Cx \&\ \&
+.Ar variable value
+.Cx
+Define the variable
+.Ar variable
+to have a value of
+.Ar value.
+Any variables defined by this command are automatically exported.
+The
+.Ar value
+may be enclosed in single or double quotes so
+that tabs and spaces may be included.
+.Tp Cx Ic undefine
+.Cx \&\ \&
+.Ar variable
+.Cx
+Remove
+.Ar variable
+from the list of environment variables.
+.Tp Cx Ic export
+.Cx \&\ \&
+.Ar variable
+.Cx
+Mark the variable
+.Ar variable
+to be exported to the remote side.
+.Tp Cx Ic unexport
+.Cx \&\ \&
+.Ar variable
+.Cx
+Mark the variable
+.Ar variable
+to not be exported unless
+explicitly asked for by the remote side.
+.Tp Ic list
+List the current set of environment variables.
+Those marked with a \fB*\fR will be sent automatically,
+other variables will only be sent if explicitly requested.
+.Tp Ic \&?
+Prints out help information for the
+.Ic environ
+command.
+.Tp
+.\" ######## END the "environ" command
+.\"
+.\" ######## BEGIN the "logout" command
+.Tp Ic logout
+Send the
+.Li TELNET LOGOUT
+option to the remote side.
+This is similar to doing a
+.Ic close
+command, however
+if the remote side does not support the
+.Li LOGOUT
+option, then nothing will happen.
+If, however, the remote side does support the
+.Li LOGOUT
+option, then this command should cause the remote side
+to close the
+.Li TELNET
+connection.
+In addition, if the remote side supports the concept of suspending
+a users session for later re-attachement, the
+.Li LOGOUT
+option indicates that the session should be terminated immediately.
+.\" ######## END the "logout" command
+.\"
+.\" ######## BEGIN the "mode" command
+.Tp Cx Ic mode
+.Cx \&\ \&
+.Ar type
+.Cx
+.Ar Type
+is one of several options, depending on the state of the
+.Li TELNET
+session.
+The remote host is asked for permission to go into the requested mode.
+If the remote host is capable of entering that mode, the requested
+mode will be entered.
+.Tw Ar
+.Tp Ic character
+Disable the
+.Li TELNET LINEMODE
+option, or, if the remote side does not understand the
+.Li LINEMODE
+option, then enter \*(Lqcharacter at a time\*(Lq mode.
+.Tp Ic line
+Enable the
+.Li TELNET LINEMODE
+option, or, if the remote side does not understand the
+.Li LINEMODE
+option, then attempt to enter \*(Lqold-line-by-line\*(Lq mode.
+.Tp Cx Ic isig
+.Cx \&\ \&
+.Pq Ic \-isig
+.Cx
+Attempt to enable (disable) the
+.Li TRAPSIG
+mode of the
+.Li LINEMODE
+option.
+This requires that the
+.Li LINEMODE
+option be enabled.
+.Tp Cx Ic edit
+.Cx \&\ \&
+.Pq Ic \-edit
+.Cx
+Attempt to enable (disable) the
+.Li EDIT
+mode of the
+.Li LINEMODE
+option.
+This requires that the
+.Li LINEMODE
+option be enabled.
+.Tp Cx Ic softtabs
+.Cx \&\ \&
+.Pq Ic \-softtabs
+.Cx
+Attempt to enable (disable) the
+.Li SOFT_TAB
+mode of the
+.Li LINEMODE
+option.
+This requires that the
+.Li LINEMODE
+option be enabled.
+.Tp Cx Ic litecho
+.Cx \&\ \&
+.Pq Ic \-litecho
+.Cx
+Attempt to enable (disable) the
+.Li LIT_ECHO
+mode of the
+.Li LINEMODE
+option.
+This requires that the
+.Li LINEMODE
+option be enabled.
+.Tp Ic \&?
+Prints out help information for the
+.Ic mode
+command.
+.Tp
+.\" ######## END the "mode" command
+.\"
+.\" ######## BEGIN the "open" command
+.Tp Cx Ic open
+.Cx \&\ \&
+.Ar host
+.Cx \&\ \&
+.Cx [
+.Op Fl l
+.Cx \&\ \&
+.Ar user
+.Cx ]
+.Cx [
+.Op Fl
+.Cx \&\ \&
+.Ar port
+.Cx ]
+.Cx
+Open a connection to the named host.
+If no port number
+is specified,
+.Nm telnet
+will attempt to contact a
+.Li TELNET
+server at the default port.
+The host specification may be either a host name (see
+.Xr hosts 5 )
+or an Internet address specified in the \*(Lqdot notation\*(Rq (see
+.Xr inet 3 ) .
+The
+.Op Fl l
+option may be used to specify the user name
+to be passed to the remote system via the
+.Li ENVIRON
+option.
+When connecting to a non-standard port,
+.Nm telnet
+omits any automatic initiation of
+.Li TELNET
+options. When the port number is preceded by a minus sign,
+the initial option negotiation is done.
+After establishing a connection,
+if the
+.Ic skiprc
+variable is not enabled
+(see the
+.Ic toggle
+.Ic skiprc
+command below),
+the file
+.Pa \&.telnetrc
+in the
+users home directory is opened. Lines beginning with a # are
+comment lines. Blank lines are ignored. Lines that begin
+without whitespace are the start of a machine entry. The
+first thing on the line is the name of the machine that is
+being connected to. The rest of the line, and successive
+lines that begin with whitespace are assumed to be
+.Nm telnet
+commands and are processed as if they had been typed
+in manually to the
+.Nm telnet
+command prompt.
+The special machine name
+.Ic DEFAULT
+is used to specify commands that should be executed for
+all machines.
+There may be more than one entry for a machine; all matches
+will the specified machine name will be executed.
+.\" ######## END the "open" command
+.\"
+.\" ######## BEGIN the "quit" command
+.Tp Ic quit
+Close any open
+.Li TELNET
+session and exit
+.Nm telnet .
+An end of file (in command mode) will also close a session and exit.
+.\" ######## END the "quit" command
+.\"
+.\" ######## BEGIN the "send" command
+.Tp Cx Ic send
+.Cx \&\ \&
+.Ar arguments
+.Cx
+Sends one or more special character sequences to the remote host.
+The following are the arguments which may be specified
+(more than one argument may be specified at a time):
+.Pp
+.Tw Ds
+.Tp Ic abort
+Sends the
+.Li TELNET ABORT
+(ABORT processes)
+sequence.
+.Tp Ic ao
+Sends the
+.Li TELNET AO
+(Abort Output) sequence, which should cause the remote system to flush
+all output
+.Em from
+the remote system
+.Em to
+the user's terminal.
+.Tp Ic ayt
+Sends the
+.Li TELNET AYT
+(Are You There)
+sequence, to which the remote system may or may not choose to respond.
+.Tp Ic brk
+Sends the
+.Li TELNET BRK
+(Break) sequence, which may have significance to the remote
+system.
+.Tp Ic ec
+Sends the
+.Li TELNET EC
+(Erase Character)
+sequence, which should cause the remote system to erase the last character
+entered.
+.Tp Ic el
+Sends the
+.Li TELNET EL
+(Erase Line)
+sequence, which should cause the remote system to erase the line currently
+being entered.
+.Tp Ic eof
+Sends the
+.Li TELNET EOF
+(End Of File)
+sequence.
+.Tp Ic eor
+Sends the
+.Li TELNET EOR
+(End of Record)
+sequence.
+.Tp Ic escape
+Sends the current
+.Nm telnet
+escape character (initially \*(Lq^\*(Rq).
+.Tp Ic ga
+Sends the
+.Li TELNET GA
+(Go Ahead)
+sequence, which likely has no significance to the remote system.
+.Tp Ic getstatus
+If the remote side supports the
+.Li TELNET STATUS
+command,
+.Ic getstatus
+will send the subnegotiation to request that the server send
+its current option status.
+.Tp Ic ip
+Sends the
+.Li TELNET IP
+(Interrupt Process) sequence, which should cause the remote
+system to abort the currently running process.
+.Tp Ic nop
+Sends the
+.Li TELNET NOP
+(No OPeration)
+sequence.
+.Tp Ic susp
+Sends the
+.Li TELNET SUSP
+(SUSPend process)
+sequence.
+.Tp Ic synch
+Sends the
+.Li TELNET SYNCH
+sequence.
+This sequence causes the remote system to discard all previously typed
+(but not yet read) input.
+This sequence is sent as TCP urgent
+data (and may not work if the remote system is a 4.2 BSD system -- if
+it doesn't work, a lower case \*(Lqr\*(Rq may be echoed on the terminal).
+.Tp Ic \&?
+Prints out help information for the
+.Ic send
+command.
+.Tp
+.\" ######## END the "send" command
+.\"
+.\" ######## BEGIN the "set" and "unset" commands
+.Tp Cx Ic set
+.Cx \&\ \&
+.Ar argument value
+.Cx
+.Tp Cx Ic unset
+.Cx \&\ \&
+.Ar argument value
+.Cx
+The
+.Ic set
+command will set any one of a number of
+.Nm telnet
+variables to a specific value or to TRUE.
+The special value
+.Ic off
+turns off the function associated with
+the variable, this is equivalent to using the
+.Ic unset
+command.
+The
+.Ic unset
+command will disable or set to FALSE any of the specified functions.
+The values of variables may be interrogated with the
+.Ic display
+command.
+The variables which may be set or unset, but not toggled, are
+listed here. In addition, any of the variables for the
+.Ic toggle
+command may be explicitly set or unset using
+the
+.Ic set
+and
+.Ic unset
+commands.
+.Tw Fl
+.Tp Ic ayt
+If
+.Nm telnet
+is in
+.Ic localchars
+mode, or
+.Li LINEMODE
+is enabled, and the
+.Ic status
+character is typed, a
+.Li TELNET AYT
+sequence (see
+.Ic send
+.Ic ayt
+above)
+is sent to the remote host.
+The initial value for the ayt character is taken to be
+the terminal's
+.Ic status
+character.
+.Tp Ic echo
+This is the value (initially \*(Lq^E\*(Rq) which, when in
+\*(Lqline by line\*(Rq mode, toggles between doing local echoing
+of entered characters (for normal processing), and suppressing
+echoing of entered characters (for entering, say, a password).
+.Tp Ic eof
+If
+.Nm telnet
+is operating in
+.Li LINEMODE
+or \*(Lqold line by line\*(Rq mode, entering this character
+as the first character on a line will cause this character to be
+sent to the remote system.
+The initial value of the eof character is taken to be the terminal's
+.Ic eof
+character.
+.Tp Ic erase
+If
+.Nm telnet
+is in
+.Ic localchars
+mode (see
+.Ic toggle
+.Ic localchars
+below),
+.Sy and
+if
+.Nm telnet
+is operating in \*(Lqcharacter at a time\*(Rq mode, then when this
+character is typed, a
+.Li TELNET EC
+sequence (see
+.Ic send
+.Ic ec
+above)
+is sent to the remote system.
+The initial value for the erase character is taken to be
+the terminal's
+.Ic erase
+character.
+.Tp Ic escape
+This is the
+.Nm telnet
+escape character (initially \*(Lq^[\*(Rq) which causes entry
+into
+.Nm telnet
+command mode (when connected to a remote system).
+.Tp Ic flushoutput
+If
+.Nm telnet
+is in
+.Ic localchars
+mode (see
+.Ic toggle
+.Ic localchars
+below)
+and the
+.Ic flushoutput
+character is typed, a
+.Li TELNET AO
+sequence (see
+.Ic send
+.Ic ao
+above)
+is sent to the remote host.
+The initial value for the flush character is taken to be
+the terminal's
+.Ic flush
+character.
+.Tp Ic forw1
+.Tp Ic forw2
+If
+.Nm telnet
+is operating in
+.Li LINEMODE,
+these are the characters that, when typed,
+cause partial lines to be forwarded to the remote system.
+The initial value for the forw1 and forw2 characters are
+taken from the terminal's
+.Ic eol
+and
+.Ic eol2
+characters.
+.Tp Ic interrupt
+If
+.Nm telnet
+is in
+.Ic localchars
+mode (see
+.Ic toggle
+.Ic localchars
+below)
+and the
+.Ic interrupt
+character is typed, a
+.Li TELNET IP
+sequence (see
+.Ic send
+.Ic ip
+above)
+is sent to the remote host.
+The initial value for the interrupt character is taken to be
+the terminal's
+.Ic intr
+character.
+.Tp Ic kill
+If
+.Nm telnet
+is in
+.Ic localchars
+mode (see
+.Ic toggle
+.Ic localchars
+below),
+.Ic and
+if
+.Nm telnet
+is operating in \*(Lqcharacter at a time\*(Rq mode, then when this
+character is typed, a
+.Li TELNET EL
+sequence (see
+.Ic send
+.Ic el
+above)
+is sent to the remote system.
+The initial value for the kill character is taken to be
+the terminal's
+.Ic kill
+character.
+.Tp Ic lnext
+If
+.Nm telnet
+is operating in
+.Li LINEMODE
+or \*(Lqold line by line\*(Lq mode, then this character is taken to
+be the terminal's
+.Ic lnext
+character.
+The initial value for the lnext character is taken to be
+the terminal's
+.Ic lnext
+character.
+.Tp Ic quit
+If
+.Nm telnet
+is in
+.Ic localchars
+mode (see
+.Ic toggle
+.Ic localchars
+below)
+and the
+.Ic quit
+character is typed, a
+.Li TELNET BRK
+sequence (see
+.Ic send
+.Ic brk
+above)
+is sent to the remote host.
+The initial value for the quit character is taken to be
+the terminal's
+.Ic quit
+character.
+.Tp Ic reprint
+If
+.Nm telnet
+is operating in
+.Li LINEMODE
+or \*(Lqold line by line\*(Lq mode, then this character is taken to
+be the terminal's
+.Ic reprint
+character.
+The initial value for the reprint character is taken to be
+the terminal's
+.Ic reprint
+character.
+.Tp Ic rlogin
+This is the rlogin escape character.
+If set, the normal
+.Nm telnet
+.Ic escape
+character will be ignored unless it is preceded by this character
+at the beginning of a line.
+This character, at the beginning of a line, followed by a ``.''
+will close the connection; when followed by a ``^Z'' it will
+suspend the
+.Nm telnet
+command.
+The initial state is to have the
+.Ic rlogin
+escape character disabled.
+.Tp Ic start
+If the
+.Li TELNET TOGGLE-FLOW-CONTROL
+option has been enabled,
+then this character is taken to
+be the terminal's
+.Ic start
+character.
+The initial value for the kill character is taken to be
+the terminal's
+.Ic start
+character.
+.Tp Ic stop
+If the
+.Li TELNET TOGGLE-FLOW-CONTROL
+option has been enabled,
+then this character is taken to
+be the terminal's
+.Ic stop
+character.
+The initial value for the kill character is taken to be
+the terminal's
+.Ic stop
+character.
+.Tp Ic susp
+If
+.Nm telnet
+is in
+.Ic localchars
+mode, or
+.Li LINEMODE
+is enabled, and the
+.Ic suspend
+character is typed, a
+.Li TELNET SUSP
+sequence (see
+.Ic send
+.Ic susp
+above)
+is sent to the remote host.
+The initial value for the suspend character is taken to be
+the terminal's
+.Ic suspend
+character.
+.Tp Ic tracefile
+This is the file to which the output, caused by
+.Ic netdata,
+.Ic termdata,
+or
+.Ic option
+tracing being TRUE, will be written. If it is set to
+.Dq Fl ,
+then tracing information will be written to standard output (the default).
+.Tp Ic worderase
+If
+.Nm telnet
+is operating in
+.Li LINEMODE
+or \*(Lqold line by line\*(Lq mode, then this character is taken to
+be the terminal's
+.Ic worderase
+character.
+The initial value for the worderase character is taken to be
+the terminal's
+.Ic worderase
+character.
+.Tp Ic \&?
+Displays the legal
+.Ic set
+.Pq Ic unset
+commands.
+.Tp
+.\" ######## END the "set" and "unset" commands
+.\"
+.\" ######## BEGIN the "slc" command
+.Tp Cx Ic slc
+.Cx \&\ \&
+.Ar state
+.Cx
+The
+.Ic slc
+command (Set Local Characters) is used to set
+or change the state of the the special
+characters when the
+.Li TELNET LINEMODE
+option has
+been enabled. Special characters are characters that get
+mapped to
+.Li TELNET
+commands sequences (like
+.Ic ip
+or
+.Ic quit )
+or line editing characters (like
+.Ic erase
+and
+.Ic kill ) .
+By default, the local special characters are exported.
+.Tw Fl
+.Tp Ic export
+Switch to the local defaults for the special characters. The
+local default characters are those of the local terminal at
+the time when
+.Nm telnet
+was started.
+.Tp Ic import
+Switch to the remote defaults for the special characters.
+The remote default characters are those of the remote system
+at the time when the
+.Li TELNET
+connection was established.
+.Tp Ic check
+Verify the current settings for the current special characters.
+The remote side is requested to send all the current special
+character settings, and if there are any discrepancies with
+the local side, the local side will switch to the remote value.
+.Tp Ic \&?
+Prints out help information for the
+.Ic slc
+command.
+.Tp
+.\" ######## END the "slc" command
+.\"
+.\" ######## BEGIN the "status" command
+.Tp Ic status
+Show the current status of
+.Nm telnet .
+This includes the peer one is connected to, as well
+as the current mode.
+.\" ######## END the "status" command
+.\"
+.\" ######## BEGIN the "toggle" command
+.Tp Cx Ic toggle
+.Cx \&\ \&
+.Ar arguments ...
+.Cx
+Toggle (between
+TRUE
+and
+FALSE)
+various flags that control how
+.Nm telnet
+responds to events.
+These flags may be set explicitly to TRUE or FALSE
+using the
+.Ic set
+and
+.Ic unset
+commands listed above.
+More than one argument may be specified.
+The state of these flags may be interrogated with the
+.Ic display
+command.
+Valid arguments are:
+.Tw Ar
+.Tp Ic authdebug
+Turn on debugging information for the authentication code.
+.Tp Ic autoflush
+If
+.Ic autoflush
+and
+.Ic localchars
+are both
+TRUE,
+then when the
+.Ic ao ,
+or
+.Ic quit
+characters are recognized (and transformed into
+.Li TELNET
+sequences; see
+.Ic set
+above for details),
+.Nm telnet
+refuses to display any data on the user's terminal
+until the remote system acknowledges (via a
+.Li TELNET TIMING MARK
+option)
+that it has processed those
+.Li TELNET
+sequences.
+The initial value for this toggle is TRUE if the terminal user had not
+done an "stty noflsh", otherwise FALSE (see
+.Xr stty 1 ) .
+.Tp Ic autoencrypt
+.Tp Ic autodecrypt
+When the
+.Li TELNET ENCRYPTION
+option is negotiated,
+by default the actual encryption (decryption) of the data
+stream does not automatically start.
+The
+.Ic autoencrypt
+.Ic (autodecrypt)
+command states that encryption of the output (input) stream should be
+enabled as soon as possible.
+.Tp Ic autologin
+If the
+.Li TELNET AUTHENTICATION
+option is supported by the remote side, then
+.Nm telnet
+will attempt to use it to perform automatic authentication.
+If the
+.Li AUTHENTICATION
+option is not supported, then the users login name will
+be propagated via the
+.Li TELNET ENVIRON
+option.
+This command is the same as specifying
+.Fl a
+option on the
+.Ic open
+command.
+.Tp Ic autosynch
+If
+.Ic autosynch
+and
+.Ic localchars
+are both
+TRUE,
+then when either the
+.Ic intr
+or
+.Ic quit
+characters is typed (see
+.Ic set
+above for descriptions of the
+.Ic intr
+and
+.Ic quit
+characters), the resulting
+.Li TELNET
+sequence sent is followed by the
+.Li TELNET SYNCH
+sequence.
+This procedure
+.Ic should
+cause the remote system to begin throwing away all previously
+typed input until both of the
+.Li TELNET
+sequences have been read and acted upon.
+The initial value of this toggle is FALSE.
+.Tp Ic binary
+Enable or disable the
+.Li TELNET BINARY
+option on both input and output.
+.Tp Ic inbinary
+Enable or disable the
+.Li TELNET BINARY
+option on input.
+.Tp Ic outbinary
+Enable or disable the
+.Li TELNET BINARY
+option on output.
+.Tp Ic crlf
+If this is TRUE, then carriage returns will be sent as <CR><LF>.
+If this is FALSE, then carriage returns will be send as <CR><NUL>.
+The initial value for this toggle is FALSE.
+.Tp Ic crmod
+Toggle carriage return mode.
+When this mode is enabled, most carriage return characters received from
+the remote host will be mapped into a carriage return followed by
+a line feed.
+This mode does not affect those characters typed by the user, only
+those received from the remote host.
+This mode is not very useful unless the remote host
+only sends carriage return, but never line feed.
+The initial value for this toggle is FALSE.
+.Tp Ic debug
+Toggles socket level debugging (useful only to the
+.Ic super user ) .
+The initial value for this toggle is FALSE.
+.Tp Ic encdebug
+Turn on debugging information for the encryption code.
+.Tp Ic localchars
+If this is
+TRUE,
+then the
+.Ic flush ,
+.Ic interrupt ,
+.Ic quit ,
+.Ic erase ,
+and
+.Ic kill
+characters (see
+.Ic set
+above) are recognized locally, and transformed into (hopefully) appropriate
+.Li TELNET
+control sequences
+(respectively
+.Ic ao ,
+.Ic ip ,
+.Ic brk ,
+.Ic ec ,
+and
+.Ic el ;
+see
+.Ic send
+above).
+The initial value for this toggle is TRUE in \*(Lqold line by line\*(Rq mode,
+and FALSE in \*(Lqcharacter at a time\*(Rq mode.
+When the
+.Li LINEMODE
+option is enabled, the value of
+.Ic localchars
+is ignored, and assumed to always be TRUE.
+If
+.Li LINEMODE
+has ever been enabled, then
+.Ic quit
+is sent as
+.Ic abort ,
+and
+.Ic eof and
+.B suspend
+are sent as
+.Ic eof and
+.Ic susp ,
+see
+.Ic send
+above).
+.Tp Ic netdata
+Toggles the display of all network data (in hexadecimal format).
+The initial value for this toggle is FALSE.
+.Tp Ic options
+Toggles the display of some internal
+.Nm telnet
+protocol processing (having to do with
+.Li TELNET
+options).
+The initial value for this toggle is FALSE.
+.Tp Ic prettydump
+When the
+.Ic netdata
+or
+.Ic termdata
+toggle is enabled, if
+.Ic prettydump
+is enabled the output from the
+.Ic netdata
+and
+.Ic termdata
+command will be formated in a more user readable format.
+Spaces are put between each character in the output, and the
+beginning of any
+.Li TELNET
+escape sequence is preceded by a '*' to aid in locating them.
+.Tp Ic skiprc
+When the
+.Ic skiprc
+toggle
+is TRUE, then
+.Nm telnet
+will skip the reading of the
+.Pa \&.telnetrc
+file in the users home directory
+when connections are opened.
+The initial value for this toggle is FALSE.
+.Tp Ic termdata
+Toggles the display of all terminal data (in hexadecimal format).
+The initial value for this toggle is FALSE.
+.Tp Ic verbose_encrypt
+When the
+.Ic verbose_encrypt
+toggle is TRUE, then
+.Nm telnet
+will print out a message each time encryption is
+enabled or disabled.
+The initial value for this toggle is FALSE.
+.Tp Ic \&?
+Displays the legal
+.Ic toggle
+commands.
+.Tp
+.\" ######## END the "toggle" command
+.\"
+.\" ######## BEGIN the "z" command
+.Tp Ic z
+Suspend
+.Nm telnet .
+This command only works when the user is using the
+.Xr csh 1 .
+.\" ######## END the "z" command
+.\"
+.\" ######## BEGIN the "!" command
+.Tp Cx Ic \&!
+.Cx \&\ \&
+.Op Ar command
+.Cx
+Execute a single command in a subshell on the local
+system. If
+.Ic command
+is omitted, then an interactive
+subshell is invoked.
+.\" ######## END the "!" command
+.\"
+.\" ######## BEGIN the "?" command
+.Tp Cx Ic \&?
+.Cx \&\ \&
+.Op Ar command
+.Cx
+Get help. With no arguments,
+.Nm telnet
+prints a help summary.
+If a command is specified,
+.Nm telnet
+will print the help information for just that command.
+.\" ######## END the "!" command
+.Sh ENVIRONMENT
+.Nm Telnet
+uses at least the
+.Ev HOME ,
+.Ev SHELL ,
+.Ev DISPLAY ,
+and
+.Ev TERM
+environment variables.
+Other environment variables may be propagated
+to the other side via the
+.Li TELNET ENVIRON
+option.
+.Sh FILES
+.Dw ~/.telnetrc
+.Di L
+.Dp Pa ~/.telnetrc
+user customized telnet startup values
+.Dp
+.Sh HISTORY
+.Nm Telnet
+appeared in 4.2 BSD.
+.Sh NOTES
+.Pp
+On some remote systems, echo has to be turned off manually when in
+\*(Lqold line by line\*(Rq mode.
+.Pp
+In \*(Lqold line by line\*(Rq mode or
+.Li LINEMODE
+the terminal's
+.Ic eof
+character is only recognized (and sent to the remote system)
+when it is the first character on a line.
--- /dev/null
+/*
+ * Copyright (c) 1988, 1990 Regents of the University of California.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef lint
+static char sccsid[] = "@(#)telnet.c 5.54 (Berkeley) 12/18/92";
+#endif /* not lint */
+
+#include <sys/types.h>
+
+#if defined(unix)
+#include <signal.h>
+/* By the way, we need to include curses.h before telnet.h since,
+ * among other things, telnet.h #defines 'DO', which is a variable
+ * declared in curses.h.
+ */
+#endif /* defined(unix) */
+
+#include <arpa/telnet.h>
+
+#include <ctype.h>
+
+#include "ring.h"
+
+#include "defines.h"
+#include "externs.h"
+#include "types.h"
+#include "general.h"
+
+\f
+#define strip(x) ((x)&0x7f)
+
+static unsigned char subbuffer[SUBBUFSIZE],
+ *subpointer, *subend; /* buffer for sub-options */
+#define SB_CLEAR() subpointer = subbuffer;
+#define SB_TERM() { subend = subpointer; SB_CLEAR(); }
+#define SB_ACCUM(c) if (subpointer < (subbuffer+sizeof subbuffer)) { \
+ *subpointer++ = (c); \
+ }
+
+#define SB_GET() ((*subpointer++)&0xff)
+#define SB_PEEK() ((*subpointer)&0xff)
+#define SB_EOF() (subpointer >= subend)
+#define SB_LEN() (subend - subpointer)
+
+char options[256]; /* The combined options */
+char do_dont_resp[256];
+char will_wont_resp[256];
+
+int
+ eight = 0,
+ autologin = 0, /* Autologin anyone? */
+ skiprc = 0,
+ connected,
+ showoptions,
+ In3270, /* Are we in 3270 mode? */
+ ISend, /* trying to send network data in */
+ debug = 0,
+ crmod,
+ netdata, /* Print out network data flow */
+ crlf, /* Should '\r' be mapped to <CR><LF> (or <CR><NUL>)? */
+#if defined(TN3270)
+ noasynchtty = 0,/* User specified "-noasynch" on command line */
+ noasynchnet = 0,/* User specified "-noasynch" on command line */
+ askedSGA = 0, /* We have talked about suppress go ahead */
+#endif /* defined(TN3270) */
+ telnetport,
+ SYNCHing, /* we are in TELNET SYNCH mode */
+ flushout, /* flush output */
+ autoflush = 0, /* flush output when interrupting? */
+ autosynch, /* send interrupt characters with SYNCH? */
+ localflow, /* we handle flow control locally */
+ restartany, /* if flow control enabled, restart on any character */
+ localchars, /* we recognize interrupt/quit */
+ donelclchars, /* the user has set "localchars" */
+ donebinarytoggle, /* the user has put us in binary */
+ dontlecho, /* do we suppress local echoing right now? */
+ globalmode;
+
+char *prompt = 0;
+
+cc_t escape;
+cc_t rlogin;
+#ifdef KLUDGELINEMODE
+cc_t echoc;
+#endif
+
+/*
+ * Telnet receiver states for fsm
+ */
+#define TS_DATA 0
+#define TS_IAC 1
+#define TS_WILL 2
+#define TS_WONT 3
+#define TS_DO 4
+#define TS_DONT 5
+#define TS_CR 6
+#define TS_SB 7 /* sub-option collection */
+#define TS_SE 8 /* looking for sub-option end */
+
+static int telrcv_state;
+
+jmp_buf toplevel = { 0 };
+jmp_buf peerdied;
+
+int flushline;
+int linemode;
+
+#ifdef KLUDGELINEMODE
+int kludgelinemode = 1;
+#endif
+
+/*
+ * The following are some clocks used to decide how to interpret
+ * the relationship between various variables.
+ */
+
+Clocks clocks;
+\f
+#ifdef notdef
+Modelist modelist[] = {
+ { "telnet command mode", COMMAND_LINE },
+ { "character-at-a-time mode", 0 },
+ { "character-at-a-time mode (local echo)", LOCAL_ECHO|LOCAL_CHARS },
+ { "line-by-line mode (remote echo)", LINE | LOCAL_CHARS },
+ { "line-by-line mode", LINE | LOCAL_ECHO | LOCAL_CHARS },
+ { "line-by-line mode (local echoing suppressed)", LINE | LOCAL_CHARS },
+ { "3270 mode", 0 },
+};
+#endif
+
+\f
+/*
+ * Initialize telnet environment.
+ */
+
+ void
+init_telnet()
+{
+ env_init();
+
+ SB_CLEAR();
+ ClearArray(options);
+
+ connected = In3270 = ISend = localflow = donebinarytoggle = 0;
+#if defined(ENCRYPTION) || defined(AUTHENTICATION)
+ auth_encrypt_connect(connected);
+#endif
+ restartany = -1;
+
+ SYNCHing = 0;
+
+ /* Don't change NetTrace */
+
+ escape = CONTROL(']');
+ rlogin = _POSIX_VDISABLE;
+#ifdef KLUDGELINEMODE
+ echoc = CONTROL('E');
+#endif
+
+ flushline = 1;
+ telrcv_state = TS_DATA;
+}
+\f
+
+#ifdef notdef
+#include <varargs.h>
+
+ /*VARARGS*/
+ static void
+printring(va_alist)
+ va_dcl
+{
+ va_list ap;
+ char buffer[100]; /* where things go */
+ char *ptr;
+ char *format;
+ char *string;
+ Ring *ring;
+ int i;
+
+ va_start(ap);
+
+ ring = va_arg(ap, Ring *);
+ format = va_arg(ap, char *);
+ ptr = buffer;
+
+ while ((i = *format++) != 0) {
+ if (i == '%') {
+ i = *format++;
+ switch (i) {
+ case 'c':
+ *ptr++ = va_arg(ap, int);
+ break;
+ case 's':
+ string = va_arg(ap, char *);
+ ring_supply_data(ring, buffer, ptr-buffer);
+ ring_supply_data(ring, string, strlen(string));
+ ptr = buffer;
+ break;
+ case 0:
+ ExitString("printring: trailing %%.\n", 1);
+ /*NOTREACHED*/
+ default:
+ ExitString("printring: unknown format character.\n", 1);
+ /*NOTREACHED*/
+ }
+ } else {
+ *ptr++ = i;
+ }
+ }
+ ring_supply_data(ring, buffer, ptr-buffer);
+}
+#endif
+
+/*
+ * These routines are in charge of sending option negotiations
+ * to the other side.
+ *
+ * The basic idea is that we send the negotiation if either side
+ * is in disagreement as to what the current state should be.
+ */
+
+ void
+send_do(c, init)
+ register int c, init;
+{
+ if (init) {
+ if (((do_dont_resp[c] == 0) && my_state_is_do(c)) ||
+ my_want_state_is_do(c))
+ return;
+ set_my_want_state_do(c);
+ do_dont_resp[c]++;
+ }
+ NET2ADD(IAC, DO);
+ NETADD(c);
+ printoption("SENT", DO, c);
+}
+
+ void
+send_dont(c, init)
+ register int c, init;
+{
+ if (init) {
+ if (((do_dont_resp[c] == 0) && my_state_is_dont(c)) ||
+ my_want_state_is_dont(c))
+ return;
+ set_my_want_state_dont(c);
+ do_dont_resp[c]++;
+ }
+ NET2ADD(IAC, DONT);
+ NETADD(c);
+ printoption("SENT", DONT, c);
+}
+
+ void
+send_will(c, init)
+ register int c, init;
+{
+ if (init) {
+ if (((will_wont_resp[c] == 0) && my_state_is_will(c)) ||
+ my_want_state_is_will(c))
+ return;
+ set_my_want_state_will(c);
+ will_wont_resp[c]++;
+ }
+ NET2ADD(IAC, WILL);
+ NETADD(c);
+ printoption("SENT", WILL, c);
+}
+
+ void
+send_wont(c, init)
+ register int c, init;
+{
+ if (init) {
+ if (((will_wont_resp[c] == 0) && my_state_is_wont(c)) ||
+ my_want_state_is_wont(c))
+ return;
+ set_my_want_state_wont(c);
+ will_wont_resp[c]++;
+ }
+ NET2ADD(IAC, WONT);
+ NETADD(c);
+ printoption("SENT", WONT, c);
+}
+
+
+ void
+willoption(option)
+ int option;
+{
+ int new_state_ok = 0;
+
+ if (do_dont_resp[option]) {
+ --do_dont_resp[option];
+ if (do_dont_resp[option] && my_state_is_do(option))
+ --do_dont_resp[option];
+ }
+
+ if ((do_dont_resp[option] == 0) && my_want_state_is_dont(option)) {
+
+ switch (option) {
+
+ case TELOPT_ECHO:
+# if defined(TN3270)
+ /*
+ * The following is a pain in the rear-end.
+ * Various IBM servers (some versions of Wiscnet,
+ * possibly Fibronics/Spartacus, and who knows who
+ * else) will NOT allow us to send "DO SGA" too early
+ * in the setup proceedings. On the other hand,
+ * 4.2 servers (telnetd) won't set SGA correctly.
+ * So, we are stuck. Empirically (but, based on
+ * a VERY small sample), the IBM servers don't send
+ * out anything about ECHO, so we postpone our sending
+ * "DO SGA" until we see "WILL ECHO" (which 4.2 servers
+ * DO send).
+ */
+ {
+ if (askedSGA == 0) {
+ askedSGA = 1;
+ if (my_want_state_is_dont(TELOPT_SGA))
+ send_do(TELOPT_SGA, 1);
+ }
+ }
+ /* Fall through */
+ case TELOPT_EOR:
+#endif /* defined(TN3270) */
+ case TELOPT_BINARY:
+ case TELOPT_SGA:
+ settimer(modenegotiated);
+ /* FALL THROUGH */
+ case TELOPT_STATUS:
+#if defined(AUTHENTICATION)
+ case TELOPT_AUTHENTICATION:
+#endif
+#if defined(ENCRYPTION)
+ case TELOPT_ENCRYPT:
+#endif
+ new_state_ok = 1;
+ break;
+
+ case TELOPT_TM:
+ if (flushout)
+ flushout = 0;
+ /*
+ * Special case for TM. If we get back a WILL,
+ * pretend we got back a WONT.
+ */
+ set_my_want_state_dont(option);
+ set_my_state_dont(option);
+ return; /* Never reply to TM will's/wont's */
+
+ case TELOPT_LINEMODE:
+ default:
+ break;
+ }
+
+ if (new_state_ok) {
+ set_my_want_state_do(option);
+ send_do(option, 0);
+ setconnmode(0); /* possibly set new tty mode */
+ } else {
+ do_dont_resp[option]++;
+ send_dont(option, 0);
+ }
+ }
+ set_my_state_do(option);
+#if defined(ENCRYPTION)
+ if (option == TELOPT_ENCRYPT)
+ encrypt_send_support();
+#endif
+}
+
+ void
+wontoption(option)
+ int option;
+{
+ if (do_dont_resp[option]) {
+ --do_dont_resp[option];
+ if (do_dont_resp[option] && my_state_is_dont(option))
+ --do_dont_resp[option];
+ }
+
+ if ((do_dont_resp[option] == 0) && my_want_state_is_do(option)) {
+
+ switch (option) {
+
+#ifdef KLUDGELINEMODE
+ case TELOPT_SGA:
+ if (!kludgelinemode)
+ break;
+ /* FALL THROUGH */
+#endif
+ case TELOPT_ECHO:
+ settimer(modenegotiated);
+ break;
+
+ case TELOPT_TM:
+ if (flushout)
+ flushout = 0;
+ set_my_want_state_dont(option);
+ set_my_state_dont(option);
+ return; /* Never reply to TM will's/wont's */
+
+ default:
+ break;
+ }
+ set_my_want_state_dont(option);
+ if (my_state_is_do(option))
+ send_dont(option, 0);
+ setconnmode(0); /* Set new tty mode */
+ } else if (option == TELOPT_TM) {
+ /*
+ * Special case for TM.
+ */
+ if (flushout)
+ flushout = 0;
+ set_my_want_state_dont(option);
+ }
+ set_my_state_dont(option);
+}
+
+ static void
+dooption(option)
+ int option;
+{
+ int new_state_ok = 0;
+
+ if (will_wont_resp[option]) {
+ --will_wont_resp[option];
+ if (will_wont_resp[option] && my_state_is_will(option))
+ --will_wont_resp[option];
+ }
+
+ if (will_wont_resp[option] == 0) {
+ if (my_want_state_is_wont(option)) {
+
+ switch (option) {
+
+ case TELOPT_TM:
+ /*
+ * Special case for TM. We send a WILL, but pretend
+ * we sent WONT.
+ */
+ send_will(option, 0);
+ set_my_want_state_wont(TELOPT_TM);
+ set_my_state_wont(TELOPT_TM);
+ return;
+
+# if defined(TN3270)
+ case TELOPT_EOR: /* end of record */
+# endif /* defined(TN3270) */
+ case TELOPT_BINARY: /* binary mode */
+ case TELOPT_NAWS: /* window size */
+ case TELOPT_TSPEED: /* terminal speed */
+ case TELOPT_LFLOW: /* local flow control */
+ case TELOPT_TTYPE: /* terminal type option */
+ case TELOPT_SGA: /* no big deal */
+ case TELOPT_ENVIRON: /* environment variable option */
+#if defined(ENCRYPTION)
+ case TELOPT_ENCRYPT: /* encryption variable option */
+#endif
+ new_state_ok = 1;
+ break;
+#if defined(AUTHENTICATION)
+ case TELOPT_AUTHENTICATION:
+ if (autologin)
+ new_state_ok = 1;
+ break;
+#endif
+
+ case TELOPT_XDISPLOC: /* X Display location */
+ if (env_getvalue((unsigned char *)"DISPLAY"))
+ new_state_ok = 1;
+ break;
+
+ case TELOPT_LINEMODE:
+#ifdef KLUDGELINEMODE
+ kludgelinemode = 0;
+ send_do(TELOPT_SGA, 1);
+#endif
+ set_my_want_state_will(TELOPT_LINEMODE);
+ send_will(option, 0);
+ set_my_state_will(TELOPT_LINEMODE);
+ slc_init();
+ return;
+
+ case TELOPT_ECHO: /* We're never going to echo... */
+ default:
+ break;
+ }
+
+ if (new_state_ok) {
+ set_my_want_state_will(option);
+ send_will(option, 0);
+ setconnmode(0); /* Set new tty mode */
+ } else {
+ will_wont_resp[option]++;
+ send_wont(option, 0);
+ }
+ } else {
+ /*
+ * Handle options that need more things done after the
+ * other side has acknowledged the option.
+ */
+ switch (option) {
+ case TELOPT_LINEMODE:
+#ifdef KLUDGELINEMODE
+ kludgelinemode = 0;
+ send_do(TELOPT_SGA, 1);
+#endif
+ set_my_state_will(option);
+ slc_init();
+ send_do(TELOPT_SGA, 0);
+ return;
+ }
+ }
+ }
+ set_my_state_will(option);
+}
+
+ static void
+dontoption(option)
+ int option;
+{
+
+ if (will_wont_resp[option]) {
+ --will_wont_resp[option];
+ if (will_wont_resp[option] && my_state_is_wont(option))
+ --will_wont_resp[option];
+ }
+
+ if ((will_wont_resp[option] == 0) && my_want_state_is_will(option)) {
+ switch (option) {
+ case TELOPT_LINEMODE:
+ linemode = 0; /* put us back to the default state */
+ break;
+ }
+ /* we always accept a DONT */
+ set_my_want_state_wont(option);
+ if (my_state_is_will(option))
+ send_wont(option, 0);
+ setconnmode(0); /* Set new tty mode */
+ }
+ set_my_state_wont(option);
+}
+
+/*
+ * Given a buffer returned by tgetent(), this routine will turn
+ * the pipe seperated list of names in the buffer into an array
+ * of pointers to null terminated names. We toss out any bad,
+ * duplicate, or verbose names (names with spaces).
+ */
+
+static char *name_unknown = "UNKNOWN";
+static char *unknown[] = { 0, 0 };
+
+ char **
+mklist(buf, name)
+ char *buf, *name;
+{
+ register int n;
+ register char c, *cp, **argvp, *cp2, **argv, **avt;
+
+ if (name) {
+ if (strlen(name) > 40) {
+ name = 0;
+ unknown[0] = name_unknown;
+ } else {
+ unknown[0] = name;
+ upcase(name);
+ }
+ } else
+ unknown[0] = name_unknown;
+ /*
+ * Count up the number of names.
+ */
+ for (n = 1, cp = buf; *cp && *cp != ':'; cp++) {
+ if (*cp == '|')
+ n++;
+ }
+ /*
+ * Allocate an array to put the name pointers into
+ */
+ argv = (char **)malloc((n+3)*sizeof(char *));
+ if (argv == 0)
+ return(unknown);
+
+ /*
+ * Fill up the array of pointers to names.
+ */
+ *argv = 0;
+ argvp = argv+1;
+ n = 0;
+ for (cp = cp2 = buf; (c = *cp); cp++) {
+ if (c == '|' || c == ':') {
+ *cp++ = '\0';
+ /*
+ * Skip entries that have spaces or are over 40
+ * characters long. If this is our environment
+ * name, then put it up front. Otherwise, as
+ * long as this is not a duplicate name (case
+ * insensitive) add it to the list.
+ */
+ if (n || (cp - cp2 > 41))
+ ;
+ else if (name && (strncasecmp(name, cp2, cp-cp2) == 0))
+ *argv = cp2;
+ else if (is_unique(cp2, argv+1, argvp))
+ *argvp++ = cp2;
+ if (c == ':')
+ break;
+ /*
+ * Skip multiple delimiters. Reset cp2 to
+ * the beginning of the next name. Reset n,
+ * the flag for names with spaces.
+ */
+ while ((c = *cp) == '|')
+ cp++;
+ cp2 = cp;
+ n = 0;
+ }
+ /*
+ * Skip entries with spaces or non-ascii values.
+ * Convert lower case letters to upper case.
+ */
+ if ((c == ' ') || !isascii(c))
+ n = 1;
+ else if (islower(c))
+ *cp = toupper(c);
+ }
+
+ /*
+ * Check for an old V6 2 character name. If the second
+ * name points to the beginning of the buffer, and is
+ * only 2 characters long, move it to the end of the array.
+ */
+ if ((argv[1] == buf) && (strlen(argv[1]) == 2)) {
+ --argvp;
+ for (avt = &argv[1]; avt < argvp; avt++)
+ *avt = *(avt+1);
+ *argvp++ = buf;
+ }
+
+ /*
+ * Duplicate last name, for TTYPE option, and null
+ * terminate the array. If we didn't find a match on
+ * our terminal name, put that name at the beginning.
+ */
+ cp = *(argvp-1);
+ *argvp++ = cp;
+ *argvp = 0;
+
+ if (*argv == 0) {
+ if (name)
+ *argv = name;
+ else {
+ --argvp;
+ for (avt = argv; avt < argvp; avt++)
+ *avt = *(avt+1);
+ }
+ }
+ if (*argv)
+ return(argv);
+ else
+ return(unknown);
+}
+
+ int
+is_unique(name, as, ae)
+ register char *name, **as, **ae;
+{
+ register char **ap;
+ register int n;
+
+ n = strlen(name) + 1;
+ for (ap = as; ap < ae; ap++)
+ if (strncasecmp(*ap, name, n) == 0)
+ return(0);
+ return (1);
+}
+
+#ifdef TERMCAP
+char termbuf[1024];
+
+ /*ARGSUSED*/
+ int
+setupterm(tname, fd, errp)
+ char *tname;
+ int fd, *errp;
+{
+ if (tgetent(termbuf, tname) == 1) {
+ termbuf[1023] = '\0';
+ if (errp)
+ *errp = 1;
+ return(0);
+ }
+ if (errp)
+ *errp = 0;
+ return(-1);
+}
+#else
+#define termbuf ttytype
+extern char ttytype[];
+#endif
+
+int resettermname = 1;
+
+ char *
+gettermname()
+{
+ char *tname;
+ static char **tnamep = 0;
+ static char **next;
+ int err;
+
+ if (resettermname) {
+ resettermname = 0;
+ if (tnamep && tnamep != unknown)
+ free(tnamep);
+ if ((tname = (char *)env_getvalue((unsigned char *)"TERM")) &&
+ (setupterm(tname, 1, &err) == 0)) {
+ tnamep = mklist(termbuf, tname);
+ } else {
+ if (tname && (strlen(tname) <= 40)) {
+ unknown[0] = tname;
+ upcase(tname);
+ } else
+ unknown[0] = name_unknown;
+ tnamep = unknown;
+ }
+ next = tnamep;
+ }
+ if (*next == 0)
+ next = tnamep;
+ return(*next++);
+}
+/*
+ * suboption()
+ *
+ * Look at the sub-option buffer, and try to be helpful to the other
+ * side.
+ *
+ * Currently we recognize:
+ *
+ * Terminal type, send request.
+ * Terminal speed (send request).
+ * Local flow control (is request).
+ * Linemode
+ */
+
+ static void
+suboption()
+{
+ printsub('<', subbuffer, SB_LEN()+2);
+ switch (SB_GET()) {
+ case TELOPT_TTYPE:
+ if (my_want_state_is_wont(TELOPT_TTYPE))
+ return;
+ if (SB_EOF() || SB_GET() != TELQUAL_SEND) {
+ return;
+ } else {
+ char *name;
+ unsigned char temp[50];
+ int len;
+
+#if defined(TN3270)
+ if (tn3270_ttype()) {
+ return;
+ }
+#endif /* defined(TN3270) */
+ name = gettermname();
+ len = strlen(name) + 4 + 2;
+ if (len < NETROOM()) {
+ sprintf((char *)temp, "%c%c%c%c%s%c%c", IAC, SB, TELOPT_TTYPE,
+ TELQUAL_IS, name, IAC, SE);
+ ring_supply_data(&netoring, temp, len);
+ printsub('>', &temp[2], len-2);
+ } else {
+ ExitString("No room in buffer for terminal type.\n", 1);
+ /*NOTREACHED*/
+ }
+ }
+ break;
+ case TELOPT_TSPEED:
+ if (my_want_state_is_wont(TELOPT_TSPEED))
+ return;
+ if (SB_EOF())
+ return;
+ if (SB_GET() == TELQUAL_SEND) {
+ long ospeed, ispeed;
+ unsigned char temp[50];
+ int len;
+
+ TerminalSpeeds(&ispeed, &ospeed);
+
+ sprintf((char *)temp, "%c%c%c%c%d,%d%c%c", IAC, SB, TELOPT_TSPEED,
+ TELQUAL_IS, ospeed, ispeed, IAC, SE);
+ len = strlen((char *)temp+4) + 4; /* temp[3] is 0 ... */
+
+ if (len < NETROOM()) {
+ ring_supply_data(&netoring, temp, len);
+ printsub('>', temp+2, len - 2);
+ }
+/*@*/ else printf("lm_will: not enough room in buffer\n");
+ }
+ break;
+ case TELOPT_LFLOW:
+ if (my_want_state_is_wont(TELOPT_LFLOW))
+ return;
+ if (SB_EOF())
+ return;
+ switch(SB_GET()) {
+ case LFLOW_RESTART_ANY:
+ restartany = 1;
+ break;
+ case LFLOW_RESTART_XON:
+ restartany = 0;
+ break;
+ case LFLOW_ON:
+ localflow = 1;
+ break;
+ case LFLOW_OFF:
+ localflow = 0;
+ break;
+ default:
+ return;
+ }
+ setcommandmode();
+ setconnmode(0);
+ break;
+
+ case TELOPT_LINEMODE:
+ if (my_want_state_is_wont(TELOPT_LINEMODE))
+ return;
+ if (SB_EOF())
+ return;
+ switch (SB_GET()) {
+ case WILL:
+ lm_will(subpointer, SB_LEN());
+ break;
+ case WONT:
+ lm_wont(subpointer, SB_LEN());
+ break;
+ case DO:
+ lm_do(subpointer, SB_LEN());
+ break;
+ case DONT:
+ lm_dont(subpointer, SB_LEN());
+ break;
+ case LM_SLC:
+ slc(subpointer, SB_LEN());
+ break;
+ case LM_MODE:
+ lm_mode(subpointer, SB_LEN(), 0);
+ break;
+ default:
+ break;
+ }
+ break;
+
+ case TELOPT_ENVIRON:
+ if (SB_EOF())
+ return;
+ switch(SB_PEEK()) {
+ case TELQUAL_IS:
+ case TELQUAL_INFO:
+ if (my_want_state_is_dont(TELOPT_ENVIRON))
+ return;
+ break;
+ case TELQUAL_SEND:
+ if (my_want_state_is_wont(TELOPT_ENVIRON)) {
+ return;
+ }
+ break;
+ default:
+ return;
+ }
+ env_opt(subpointer, SB_LEN());
+ break;
+
+ case TELOPT_XDISPLOC:
+ if (my_want_state_is_wont(TELOPT_XDISPLOC))
+ return;
+ if (SB_EOF())
+ return;
+ if (SB_GET() == TELQUAL_SEND) {
+ unsigned char temp[50], *dp;
+ int len;
+
+ if ((dp = env_getvalue((unsigned char *)"DISPLAY")) == NULL) {
+ /*
+ * Something happened, we no longer have a DISPLAY
+ * variable. So, turn off the option.
+ */
+ send_wont(TELOPT_XDISPLOC, 1);
+ break;
+ }
+ sprintf((char *)temp, "%c%c%c%c%s%c%c", IAC, SB, TELOPT_XDISPLOC,
+ TELQUAL_IS, dp, IAC, SE);
+ len = strlen((char *)temp+4) + 4; /* temp[3] is 0 ... */
+
+ if (len < NETROOM()) {
+ ring_supply_data(&netoring, temp, len);
+ printsub('>', temp+2, len - 2);
+ }
+/*@*/ else printf("lm_will: not enough room in buffer\n");
+ }
+ break;
+
+#if defined(AUTHENTICATION)
+ case TELOPT_AUTHENTICATION: {
+ if (!autologin)
+ break;
+ if (SB_EOF())
+ return;
+ switch(SB_GET()) {
+ case TELQUAL_IS:
+ if (my_want_state_is_dont(TELOPT_AUTHENTICATION))
+ return;
+ auth_is(subpointer, SB_LEN());
+ break;
+ case TELQUAL_SEND:
+ if (my_want_state_is_wont(TELOPT_AUTHENTICATION))
+ return;
+ auth_send(subpointer, SB_LEN());
+ break;
+ case TELQUAL_REPLY:
+ if (my_want_state_is_wont(TELOPT_AUTHENTICATION))
+ return;
+ auth_reply(subpointer, SB_LEN());
+ break;
+ case TELQUAL_NAME:
+ if (my_want_state_is_dont(TELOPT_AUTHENTICATION))
+ return;
+ auth_name(subpointer, SB_LEN());
+ break;
+ }
+ }
+ break;
+#endif
+#if defined(ENCRYPTION)
+ case TELOPT_ENCRYPT:
+ if (SB_EOF())
+ return;
+ switch(SB_GET()) {
+ case ENCRYPT_START:
+ if (my_want_state_is_dont(TELOPT_ENCRYPT))
+ return;
+ encrypt_start(subpointer, SB_LEN());
+ break;
+ case ENCRYPT_END:
+ if (my_want_state_is_dont(TELOPT_ENCRYPT))
+ return;
+ encrypt_end();
+ break;
+ case ENCRYPT_SUPPORT:
+ if (my_want_state_is_wont(TELOPT_ENCRYPT))
+ return;
+ encrypt_support(subpointer, SB_LEN());
+ break;
+ case ENCRYPT_REQSTART:
+ if (my_want_state_is_wont(TELOPT_ENCRYPT))
+ return;
+ encrypt_request_start(subpointer, SB_LEN());
+ break;
+ case ENCRYPT_REQEND:
+ if (my_want_state_is_wont(TELOPT_ENCRYPT))
+ return;
+ /*
+ * We can always send an REQEND so that we cannot
+ * get stuck encrypting. We should only get this
+ * if we have been able to get in the correct mode
+ * anyhow.
+ */
+ encrypt_request_end();
+ break;
+ case ENCRYPT_IS:
+ if (my_want_state_is_dont(TELOPT_ENCRYPT))
+ return;
+ encrypt_is(subpointer, SB_LEN());
+ break;
+ case ENCRYPT_REPLY:
+ if (my_want_state_is_wont(TELOPT_ENCRYPT))
+ return;
+ encrypt_reply(subpointer, SB_LEN());
+ break;
+ case ENCRYPT_ENC_KEYID:
+ if (my_want_state_is_dont(TELOPT_ENCRYPT))
+ return;
+ encrypt_enc_keyid(subpointer, SB_LEN());
+ break;
+ case ENCRYPT_DEC_KEYID:
+ if (my_want_state_is_wont(TELOPT_ENCRYPT))
+ return;
+ encrypt_dec_keyid(subpointer, SB_LEN());
+ break;
+ default:
+ break;
+ }
+ break;
+#endif
+ default:
+ break;
+ }
+}
+
+static unsigned char str_lm[] = { IAC, SB, TELOPT_LINEMODE, 0, 0, IAC, SE };
+
+ void
+lm_will(cmd, len)
+ unsigned char *cmd;
+ int len;
+{
+ if (len < 1) {
+/*@*/ printf("lm_will: no command!!!\n"); /* Should not happen... */
+ return;
+ }
+ switch(cmd[0]) {
+ case LM_FORWARDMASK: /* We shouldn't ever get this... */
+ default:
+ str_lm[3] = DONT;
+ str_lm[4] = cmd[0];
+ if (NETROOM() > sizeof(str_lm)) {
+ ring_supply_data(&netoring, str_lm, sizeof(str_lm));
+ printsub('>', &str_lm[2], sizeof(str_lm)-2);
+ }
+/*@*/ else printf("lm_will: not enough room in buffer\n");
+ break;
+ }
+}
+
+ void
+lm_wont(cmd, len)
+ unsigned char *cmd;
+ int len;
+{
+ if (len < 1) {
+/*@*/ printf("lm_wont: no command!!!\n"); /* Should not happen... */
+ return;
+ }
+ switch(cmd[0]) {
+ case LM_FORWARDMASK: /* We shouldn't ever get this... */
+ default:
+ /* We are always DONT, so don't respond */
+ return;
+ }
+}
+
+ void
+lm_do(cmd, len)
+ unsigned char *cmd;
+ int len;
+{
+ if (len < 1) {
+/*@*/ printf("lm_do: no command!!!\n"); /* Should not happen... */
+ return;
+ }
+ switch(cmd[0]) {
+ case LM_FORWARDMASK:
+ default:
+ str_lm[3] = WONT;
+ str_lm[4] = cmd[0];
+ if (NETROOM() > sizeof(str_lm)) {
+ ring_supply_data(&netoring, str_lm, sizeof(str_lm));
+ printsub('>', &str_lm[2], sizeof(str_lm)-2);
+ }
+/*@*/ else printf("lm_do: not enough room in buffer\n");
+ break;
+ }
+}
+
+ void
+lm_dont(cmd, len)
+ unsigned char *cmd;
+ int len;
+{
+ if (len < 1) {
+/*@*/ printf("lm_dont: no command!!!\n"); /* Should not happen... */
+ return;
+ }
+ switch(cmd[0]) {
+ case LM_FORWARDMASK:
+ default:
+ /* we are always WONT, so don't respond */
+ break;
+ }
+}
+
+static unsigned char str_lm_mode[] = {
+ IAC, SB, TELOPT_LINEMODE, LM_MODE, 0, IAC, SE
+};
+
+ void
+lm_mode(cmd, len, init)
+ unsigned char *cmd;
+ int len, init;
+{
+ if (len != 1)
+ return;
+ if ((linemode&MODE_MASK&~MODE_ACK) == *cmd)
+ return;
+ if (*cmd&MODE_ACK)
+ return;
+ linemode = *cmd&(MODE_MASK&~MODE_ACK);
+ str_lm_mode[4] = linemode;
+ if (!init)
+ str_lm_mode[4] |= MODE_ACK;
+ if (NETROOM() > sizeof(str_lm_mode)) {
+ ring_supply_data(&netoring, str_lm_mode, sizeof(str_lm_mode));
+ printsub('>', &str_lm_mode[2], sizeof(str_lm_mode)-2);
+ }
+/*@*/ else printf("lm_mode: not enough room in buffer\n");
+ setconnmode(0); /* set changed mode */
+}
+
+\f
+
+/*
+ * slc()
+ * Handle special character suboption of LINEMODE.
+ */
+
+struct spc {
+ cc_t val;
+ cc_t *valp;
+ char flags; /* Current flags & level */
+ char mylevel; /* Maximum level & flags */
+} spc_data[NSLC+1];
+
+#define SLC_IMPORT 0
+#define SLC_EXPORT 1
+#define SLC_RVALUE 2
+static int slc_mode = SLC_EXPORT;
+
+ void
+slc_init()
+{
+ register struct spc *spcp;
+
+ localchars = 1;
+ for (spcp = spc_data; spcp < &spc_data[NSLC+1]; spcp++) {
+ spcp->val = 0;
+ spcp->valp = 0;
+ spcp->flags = spcp->mylevel = SLC_NOSUPPORT;
+ }
+
+#define initfunc(func, flags) { \
+ spcp = &spc_data[func]; \
+ if (spcp->valp = tcval(func)) { \
+ spcp->val = *spcp->valp; \
+ spcp->mylevel = SLC_VARIABLE|flags; \
+ } else { \
+ spcp->val = 0; \
+ spcp->mylevel = SLC_DEFAULT; \
+ } \
+ }
+
+ initfunc(SLC_SYNCH, 0);
+ /* No BRK */
+ initfunc(SLC_AO, 0);
+ initfunc(SLC_AYT, 0);
+ /* No EOR */
+ initfunc(SLC_ABORT, SLC_FLUSHIN|SLC_FLUSHOUT);
+ initfunc(SLC_EOF, 0);
+#ifndef SYSV_TERMIO
+ initfunc(SLC_SUSP, SLC_FLUSHIN);
+#endif
+ initfunc(SLC_EC, 0);
+ initfunc(SLC_EL, 0);
+#ifndef SYSV_TERMIO
+ initfunc(SLC_EW, 0);
+ initfunc(SLC_RP, 0);
+ initfunc(SLC_LNEXT, 0);
+#endif
+ initfunc(SLC_XON, 0);
+ initfunc(SLC_XOFF, 0);
+#ifdef SYSV_TERMIO
+ spc_data[SLC_XON].mylevel = SLC_CANTCHANGE;
+ spc_data[SLC_XOFF].mylevel = SLC_CANTCHANGE;
+#endif
+ initfunc(SLC_FORW1, 0);
+#ifdef USE_TERMIO
+ initfunc(SLC_FORW2, 0);
+ /* No FORW2 */
+#endif
+
+ initfunc(SLC_IP, SLC_FLUSHIN|SLC_FLUSHOUT);
+#undef initfunc
+
+ if (slc_mode == SLC_EXPORT)
+ slc_export();
+ else
+ slc_import(1);
+
+}
+
+ void
+slcstate()
+{
+ printf("Special characters are %s values\n",
+ slc_mode == SLC_IMPORT ? "remote default" :
+ slc_mode == SLC_EXPORT ? "local" :
+ "remote");
+}
+
+ void
+slc_mode_export()
+{
+ slc_mode = SLC_EXPORT;
+ if (my_state_is_will(TELOPT_LINEMODE))
+ slc_export();
+}
+
+ void
+slc_mode_import(def)
+ int def;
+{
+ slc_mode = def ? SLC_IMPORT : SLC_RVALUE;
+ if (my_state_is_will(TELOPT_LINEMODE))
+ slc_import(def);
+}
+
+unsigned char slc_import_val[] = {
+ IAC, SB, TELOPT_LINEMODE, LM_SLC, 0, SLC_VARIABLE, 0, IAC, SE
+};
+unsigned char slc_import_def[] = {
+ IAC, SB, TELOPT_LINEMODE, LM_SLC, 0, SLC_DEFAULT, 0, IAC, SE
+};
+
+ void
+slc_import(def)
+ int def;
+{
+ if (NETROOM() > sizeof(slc_import_val)) {
+ if (def) {
+ ring_supply_data(&netoring, slc_import_def, sizeof(slc_import_def));
+ printsub('>', &slc_import_def[2], sizeof(slc_import_def)-2);
+ } else {
+ ring_supply_data(&netoring, slc_import_val, sizeof(slc_import_val));
+ printsub('>', &slc_import_val[2], sizeof(slc_import_val)-2);
+ }
+ }
+/*@*/ else printf("slc_import: not enough room\n");
+}
+
+ void
+slc_export()
+{
+ register struct spc *spcp;
+
+ TerminalDefaultChars();
+
+ slc_start_reply();
+ for (spcp = &spc_data[1]; spcp < &spc_data[NSLC+1]; spcp++) {
+ if (spcp->mylevel != SLC_NOSUPPORT) {
+ if (spcp->val == (cc_t)(_POSIX_VDISABLE))
+ spcp->flags = SLC_NOSUPPORT;
+ else
+ spcp->flags = spcp->mylevel;
+ if (spcp->valp)
+ spcp->val = *spcp->valp;
+ slc_add_reply(spcp - spc_data, spcp->flags, spcp->val);
+ }
+ }
+ slc_end_reply();
+ (void)slc_update();
+ setconnmode(1); /* Make sure the character values are set */
+}
+
+ void
+slc(cp, len)
+ register unsigned char *cp;
+ int len;
+{
+ register struct spc *spcp;
+ register int func,level;
+
+ slc_start_reply();
+
+ for (; len >= 3; len -=3, cp +=3) {
+
+ func = cp[SLC_FUNC];
+
+ if (func == 0) {
+ /*
+ * Client side: always ignore 0 function.
+ */
+ continue;
+ }
+ if (func > NSLC) {
+ if ((cp[SLC_FLAGS] & SLC_LEVELBITS) != SLC_NOSUPPORT)
+ slc_add_reply(func, SLC_NOSUPPORT, 0);
+ continue;
+ }
+
+ spcp = &spc_data[func];
+
+ level = cp[SLC_FLAGS]&(SLC_LEVELBITS|SLC_ACK);
+
+ if ((cp[SLC_VALUE] == (unsigned char)spcp->val) &&
+ ((level&SLC_LEVELBITS) == (spcp->flags&SLC_LEVELBITS))) {
+ continue;
+ }
+
+ if (level == (SLC_DEFAULT|SLC_ACK)) {
+ /*
+ * This is an error condition, the SLC_ACK
+ * bit should never be set for the SLC_DEFAULT
+ * level. Our best guess to recover is to
+ * ignore the SLC_ACK bit.
+ */
+ cp[SLC_FLAGS] &= ~SLC_ACK;
+ }
+
+ if (level == ((spcp->flags&SLC_LEVELBITS)|SLC_ACK)) {
+ spcp->val = (cc_t)cp[SLC_VALUE];
+ spcp->flags = cp[SLC_FLAGS]; /* include SLC_ACK */
+ continue;
+ }
+
+ level &= ~SLC_ACK;
+
+ if (level <= (spcp->mylevel&SLC_LEVELBITS)) {
+ spcp->flags = cp[SLC_FLAGS]|SLC_ACK;
+ spcp->val = (cc_t)cp[SLC_VALUE];
+ }
+ if (level == SLC_DEFAULT) {
+ if ((spcp->mylevel&SLC_LEVELBITS) != SLC_DEFAULT)
+ spcp->flags = spcp->mylevel;
+ else
+ spcp->flags = SLC_NOSUPPORT;
+ }
+ slc_add_reply(func, spcp->flags, spcp->val);
+ }
+ slc_end_reply();
+ if (slc_update())
+ setconnmode(1); /* set the new character values */
+}
+
+ void
+slc_check()
+{
+ register struct spc *spcp;
+
+ slc_start_reply();
+ for (spcp = &spc_data[1]; spcp < &spc_data[NSLC+1]; spcp++) {
+ if (spcp->valp && spcp->val != *spcp->valp) {
+ spcp->val = *spcp->valp;
+ if (spcp->val == (cc_t)(_POSIX_VDISABLE))
+ spcp->flags = SLC_NOSUPPORT;
+ else
+ spcp->flags = spcp->mylevel;
+ slc_add_reply(spcp - spc_data, spcp->flags, spcp->val);
+ }
+ }
+ slc_end_reply();
+ setconnmode(1);
+}
+
+
+unsigned char slc_reply[128];
+unsigned char *slc_replyp;
+
+ void
+slc_start_reply()
+{
+ slc_replyp = slc_reply;
+ *slc_replyp++ = IAC;
+ *slc_replyp++ = SB;
+ *slc_replyp++ = TELOPT_LINEMODE;
+ *slc_replyp++ = LM_SLC;
+}
+
+ void
+slc_add_reply(func, flags, value)
+ unsigned char func;
+ unsigned char flags;
+ cc_t value;
+{
+ if ((*slc_replyp++ = func) == IAC)
+ *slc_replyp++ = IAC;
+ if ((*slc_replyp++ = flags) == IAC)
+ *slc_replyp++ = IAC;
+ if ((*slc_replyp++ = (unsigned char)value) == IAC)
+ *slc_replyp++ = IAC;
+}
+
+ void
+slc_end_reply()
+{
+ register int len;
+
+ *slc_replyp++ = IAC;
+ *slc_replyp++ = SE;
+ len = slc_replyp - slc_reply;
+ if (len <= 6)
+ return;
+ if (NETROOM() > len) {
+ ring_supply_data(&netoring, slc_reply, slc_replyp - slc_reply);
+ printsub('>', &slc_reply[2], slc_replyp - slc_reply - 2);
+ }
+/*@*/else printf("slc_end_reply: not enough room\n");
+}
+
+ int
+slc_update()
+{
+ register struct spc *spcp;
+ int need_update = 0;
+
+ for (spcp = &spc_data[1]; spcp < &spc_data[NSLC+1]; spcp++) {
+ if (!(spcp->flags&SLC_ACK))
+ continue;
+ spcp->flags &= ~SLC_ACK;
+ if (spcp->valp && (*spcp->valp != spcp->val)) {
+ *spcp->valp = spcp->val;
+ need_update = 1;
+ }
+ }
+ return(need_update);
+}
+
+ void
+env_opt(buf, len)
+ register unsigned char *buf;
+ register int len;
+{
+ register unsigned char *ep = 0, *epc = 0;
+ register int i;
+
+ switch(buf[0]&0xff) {
+ case TELQUAL_SEND:
+ env_opt_start();
+ if (len == 1) {
+ env_opt_add(NULL);
+ } else for (i = 1; i < len; i++) {
+ switch (buf[i]&0xff) {
+ case ENV_VALUE:
+ if (ep) {
+ *epc = 0;
+ env_opt_add(ep);
+ }
+ ep = epc = &buf[i+1];
+ break;
+ case ENV_ESC:
+ i++;
+ /*FALL THROUGH*/
+ default:
+ if (epc)
+ *epc++ = buf[i];
+ break;
+ }
+ if (ep) {
+ *epc = 0;
+ env_opt_add(ep);
+ }
+ }
+ env_opt_end(1);
+ break;
+
+ case TELQUAL_IS:
+ case TELQUAL_INFO:
+ /* Ignore for now. We shouldn't get it anyway. */
+ break;
+
+ default:
+ break;
+ }
+}
+
+#define OPT_REPLY_SIZE 256
+unsigned char *opt_reply;
+unsigned char *opt_replyp;
+unsigned char *opt_replyend;
+
+ void
+env_opt_start()
+{
+ if (opt_reply)
+ opt_reply = (unsigned char *)realloc(opt_reply, OPT_REPLY_SIZE);
+ else
+ opt_reply = (unsigned char *)malloc(OPT_REPLY_SIZE);
+ if (opt_reply == NULL) {
+/*@*/ printf("env_opt_start: malloc()/realloc() failed!!!\n");
+ opt_reply = opt_replyp = opt_replyend = NULL;
+ return;
+ }
+ opt_replyp = opt_reply;
+ opt_replyend = opt_reply + OPT_REPLY_SIZE;
+ *opt_replyp++ = IAC;
+ *opt_replyp++ = SB;
+ *opt_replyp++ = TELOPT_ENVIRON;
+ *opt_replyp++ = TELQUAL_IS;
+}
+
+ void
+env_opt_start_info()
+{
+ env_opt_start();
+ if (opt_replyp)
+ opt_replyp[-1] = TELQUAL_INFO;
+}
+
+ void
+env_opt_add(ep)
+ register unsigned char *ep;
+{
+ register unsigned char *vp, c;
+
+ if (opt_reply == NULL) /*XXX*/
+ return; /*XXX*/
+
+ if (ep == NULL || *ep == '\0') {
+ /* Send user defined variables first. */
+ env_default(1, 0);
+ while (ep = env_default(0, 0))
+ env_opt_add(ep);
+
+ /* Now add the list of well know variables. */
+ env_default(1, 1);
+ while (ep = env_default(0, 1))
+ env_opt_add(ep);
+ return;
+ }
+ vp = env_getvalue(ep);
+ if (opt_replyp + (vp ? strlen((char *)vp) : 0) +
+ strlen((char *)ep) + 6 > opt_replyend)
+ {
+ register int len;
+ opt_replyend += OPT_REPLY_SIZE;
+ len = opt_replyend - opt_reply;
+ opt_reply = (unsigned char *)realloc(opt_reply, len);
+ if (opt_reply == NULL) {
+/*@*/ printf("env_opt_add: realloc() failed!!!\n");
+ opt_reply = opt_replyp = opt_replyend = NULL;
+ return;
+ }
+ opt_replyp = opt_reply + len - (opt_replyend - opt_replyp);
+ opt_replyend = opt_reply + len;
+ }
+ if (opt_welldefined(ep))
+ *opt_replyp++ = ENV_VAR;
+ else
+ *opt_replyp++ = ENV_USERVAR;
+ for (;;) {
+ while (c = *ep++) {
+ switch(c&0xff) {
+ case IAC:
+ *opt_replyp++ = IAC;
+ break;
+ case ENV_VALUE:
+ case ENV_VAR:
+ case ENV_ESC:
+ case ENV_USERVAR:
+ *opt_replyp++ = ENV_ESC;
+ break;
+ }
+ *opt_replyp++ = c;
+ }
+ if (ep = vp) {
+ *opt_replyp++ = ENV_VALUE;
+ vp = NULL;
+ } else
+ break;
+ }
+}
+
+ int
+opt_welldefined(ep)
+ char *ep;
+{
+ if ((strcmp(ep, "USER") == 0) ||
+ (strcmp(ep, "DISPLAY") == 0) ||
+ (strcmp(ep, "PRINTER") == 0) ||
+ (strcmp(ep, "SYSTEMTYPE") == 0) ||
+ (strcmp(ep, "JOB") == 0) ||
+ (strcmp(ep, "ACCT") == 0))
+ return(1);
+ return(0);
+}
+ void
+env_opt_end(emptyok)
+ register int emptyok;
+{
+ register int len;
+
+ len = opt_replyp - opt_reply + 2;
+ if (emptyok || len > 6) {
+ *opt_replyp++ = IAC;
+ *opt_replyp++ = SE;
+ if (NETROOM() > len) {
+ ring_supply_data(&netoring, opt_reply, len);
+ printsub('>', &opt_reply[2], len - 2);
+ }
+/*@*/ else printf("slc_end_reply: not enough room\n");
+ }
+ if (opt_reply) {
+ free(opt_reply);
+ opt_reply = opt_replyp = opt_replyend = NULL;
+ }
+}
+
+\f
+
+ int
+telrcv()
+{
+ register int c;
+ register int scc;
+ register unsigned char *sbp;
+ int count;
+ int returnValue = 0;
+
+ scc = 0;
+ count = 0;
+ while (TTYROOM() > 2) {
+ if (scc == 0) {
+ if (count) {
+ ring_consumed(&netiring, count);
+ returnValue = 1;
+ count = 0;
+ }
+ sbp = netiring.consume;
+ scc = ring_full_consecutive(&netiring);
+ if (scc == 0) {
+ /* No more data coming in */
+ break;
+ }
+ }
+
+ c = *sbp++ & 0xff, scc--; count++;
+#if defined(ENCRYPTION)
+ if (decrypt_input)
+ c = (*decrypt_input)(c);
+#endif
+
+ switch (telrcv_state) {
+
+ case TS_CR:
+ telrcv_state = TS_DATA;
+ if (c == '\0') {
+ break; /* Ignore \0 after CR */
+ }
+ else if ((c == '\n') && my_want_state_is_dont(TELOPT_ECHO) && !crmod) {
+ TTYADD(c);
+ break;
+ }
+ /* Else, fall through */
+
+ case TS_DATA:
+ if (c == IAC) {
+ telrcv_state = TS_IAC;
+ break;
+ }
+# if defined(TN3270)
+ if (In3270) {
+ *Ifrontp++ = c;
+ while (scc > 0) {
+ c = *sbp++ & 0377, scc--; count++;
+#if defined(ENCRYPTION)
+ if (decrypt_input)
+ c = (*decrypt_input)(c);
+#endif
+ if (c == IAC) {
+ telrcv_state = TS_IAC;
+ break;
+ }
+ *Ifrontp++ = c;
+ }
+ } else
+# endif /* defined(TN3270) */
+ /*
+ * The 'crmod' hack (see following) is needed
+ * since we can't * set CRMOD on output only.
+ * Machines like MULTICS like to send \r without
+ * \n; since we must turn off CRMOD to get proper
+ * input, the mapping is done here (sigh).
+ */
+ if ((c == '\r') && my_want_state_is_dont(TELOPT_BINARY)) {
+ if (scc > 0) {
+ c = *sbp&0xff;
+#if defined(ENCRYPTION)
+ if (decrypt_input)
+ c = (*decrypt_input)(c);
+#endif
+ if (c == 0) {
+ sbp++, scc--; count++;
+ /* a "true" CR */
+ TTYADD('\r');
+ } else if (my_want_state_is_dont(TELOPT_ECHO) &&
+ (c == '\n')) {
+ sbp++, scc--; count++;
+ TTYADD('\n');
+ } else {
+#if defined(ENCRYPTION)
+ if (decrypt_input)
+ (*decrypt_input)(-1);
+#endif
+
+ TTYADD('\r');
+ if (crmod) {
+ TTYADD('\n');
+ }
+ }
+ } else {
+ telrcv_state = TS_CR;
+ TTYADD('\r');
+ if (crmod) {
+ TTYADD('\n');
+ }
+ }
+ } else {
+ TTYADD(c);
+ }
+ continue;
+
+ case TS_IAC:
+process_iac:
+ switch (c) {
+
+ case WILL:
+ telrcv_state = TS_WILL;
+ continue;
+
+ case WONT:
+ telrcv_state = TS_WONT;
+ continue;
+
+ case DO:
+ telrcv_state = TS_DO;
+ continue;
+
+ case DONT:
+ telrcv_state = TS_DONT;
+ continue;
+
+ case DM:
+ /*
+ * We may have missed an urgent notification,
+ * so make sure we flush whatever is in the
+ * buffer currently.
+ */
+ printoption("RCVD", IAC, DM);
+ SYNCHing = 1;
+ (void) ttyflush(1);
+ SYNCHing = stilloob();
+ settimer(gotDM);
+ break;
+
+ case SB:
+ SB_CLEAR();
+ telrcv_state = TS_SB;
+ continue;
+
+# if defined(TN3270)
+ case EOR:
+ if (In3270) {
+ if (Ibackp == Ifrontp) {
+ Ibackp = Ifrontp = Ibuf;
+ ISend = 0; /* should have been! */
+ } else {
+ Ibackp += DataFromNetwork(Ibackp, Ifrontp-Ibackp, 1);
+ ISend = 1;
+ }
+ }
+ printoption("RCVD", IAC, EOR);
+ break;
+# endif /* defined(TN3270) */
+
+ case IAC:
+# if !defined(TN3270)
+ TTYADD(IAC);
+# else /* !defined(TN3270) */
+ if (In3270) {
+ *Ifrontp++ = IAC;
+ } else {
+ TTYADD(IAC);
+ }
+# endif /* !defined(TN3270) */
+ break;
+
+ case NOP:
+ case GA:
+ default:
+ printoption("RCVD", IAC, c);
+ break;
+ }
+ telrcv_state = TS_DATA;
+ continue;
+
+ case TS_WILL:
+ printoption("RCVD", WILL, c);
+ willoption(c);
+ SetIn3270();
+ telrcv_state = TS_DATA;
+ continue;
+
+ case TS_WONT:
+ printoption("RCVD", WONT, c);
+ wontoption(c);
+ SetIn3270();
+ telrcv_state = TS_DATA;
+ continue;
+
+ case TS_DO:
+ printoption("RCVD", DO, c);
+ dooption(c);
+ SetIn3270();
+ if (c == TELOPT_NAWS) {
+ sendnaws();
+ } else if (c == TELOPT_LFLOW) {
+ localflow = 1;
+ setcommandmode();
+ setconnmode(0);
+ }
+ telrcv_state = TS_DATA;
+ continue;
+
+ case TS_DONT:
+ printoption("RCVD", DONT, c);
+ dontoption(c);
+ flushline = 1;
+ setconnmode(0); /* set new tty mode (maybe) */
+ SetIn3270();
+ telrcv_state = TS_DATA;
+ continue;
+
+ case TS_SB:
+ if (c == IAC) {
+ telrcv_state = TS_SE;
+ } else {
+ SB_ACCUM(c);
+ }
+ continue;
+
+ case TS_SE:
+ if (c != SE) {
+ if (c != IAC) {
+ /*
+ * This is an error. We only expect to get
+ * "IAC IAC" or "IAC SE". Several things may
+ * have happend. An IAC was not doubled, the
+ * IAC SE was left off, or another option got
+ * inserted into the suboption are all possibilities.
+ * If we assume that the IAC was not doubled,
+ * and really the IAC SE was left off, we could
+ * get into an infinate loop here. So, instead,
+ * we terminate the suboption, and process the
+ * partial suboption if we can.
+ */
+ SB_ACCUM(IAC);
+ SB_ACCUM(c);
+ subpointer -= 2;
+ SB_TERM();
+
+ printoption("In SUBOPTION processing, RCVD", IAC, c);
+ suboption(); /* handle sub-option */
+ SetIn3270();
+ telrcv_state = TS_IAC;
+ goto process_iac;
+ }
+ SB_ACCUM(c);
+ telrcv_state = TS_SB;
+ } else {
+ SB_ACCUM(IAC);
+ SB_ACCUM(SE);
+ subpointer -= 2;
+ SB_TERM();
+ suboption(); /* handle sub-option */
+ SetIn3270();
+ telrcv_state = TS_DATA;
+ }
+ }
+ }
+ if (count)
+ ring_consumed(&netiring, count);
+ return returnValue||count;
+}
+
+static int bol = 1, local = 0;
+
+ int
+rlogin_susp()
+{
+ if (local) {
+ local = 0;
+ bol = 1;
+ command(0, "z\n", 2);
+ return(1);
+ }
+ return(0);
+}
+
+ static int
+telsnd()
+{
+ int tcc;
+ int count;
+ int returnValue = 0;
+ unsigned char *tbp;
+
+ tcc = 0;
+ count = 0;
+ while (NETROOM() > 2) {
+ register int sc;
+ register int c;
+
+ if (tcc == 0) {
+ if (count) {
+ ring_consumed(&ttyiring, count);
+ returnValue = 1;
+ count = 0;
+ }
+ tbp = ttyiring.consume;
+ tcc = ring_full_consecutive(&ttyiring);
+ if (tcc == 0) {
+ break;
+ }
+ }
+ c = *tbp++ & 0xff, sc = strip(c), tcc--; count++;
+ if (rlogin != _POSIX_VDISABLE) {
+ if (bol) {
+ bol = 0;
+ if (sc == rlogin) {
+ local = 1;
+ continue;
+ }
+ } else if (local) {
+ local = 0;
+ if (sc == '.' || c == termEofChar) {
+ bol = 1;
+ command(0, "close\n", 6);
+ continue;
+ }
+ if (sc == termSuspChar) {
+ bol = 1;
+ command(0, "z\n", 2);
+ continue;
+ }
+ if (sc == escape) {
+ command(0, (char *)tbp, tcc);
+ bol = 1;
+ count += tcc;
+ tcc = 0;
+ flushline = 1;
+ break;
+ }
+ if (sc != rlogin) {
+ ++tcc;
+ --tbp;
+ --count;
+ c = sc = rlogin;
+ }
+ }
+ if ((sc == '\n') || (sc == '\r'))
+ bol = 1;
+ } else if (sc == escape) {
+ /*
+ * Double escape is a pass through of a single escape character.
+ */
+ if (tcc && strip(*tbp) == escape) {
+ tbp++;
+ tcc--;
+ count++;
+ bol = 0;
+ } else {
+ command(0, (char *)tbp, tcc);
+ bol = 1;
+ count += tcc;
+ tcc = 0;
+ flushline = 1;
+ break;
+ }
+ } else
+ bol = 0;
+#ifdef KLUDGELINEMODE
+ if (kludgelinemode && (globalmode&MODE_EDIT) && (sc == echoc)) {
+ if (tcc > 0 && strip(*tbp) == echoc) {
+ tcc--; tbp++; count++;
+ } else {
+ dontlecho = !dontlecho;
+ settimer(echotoggle);
+ setconnmode(0);
+ flushline = 1;
+ break;
+ }
+ }
+#endif
+ if (MODE_LOCAL_CHARS(globalmode)) {
+ if (TerminalSpecialChars(sc) == 0) {
+ bol = 1;
+ break;
+ }
+ }
+ if (my_want_state_is_wont(TELOPT_BINARY)) {
+ switch (c) {
+ case '\n':
+ /*
+ * If we are in CRMOD mode (\r ==> \n)
+ * on our local machine, then probably
+ * a newline (unix) is CRLF (TELNET).
+ */
+ if (MODE_LOCAL_CHARS(globalmode)) {
+ NETADD('\r');
+ }
+ NETADD('\n');
+ bol = flushline = 1;
+ break;
+ case '\r':
+ if (!crlf) {
+ NET2ADD('\r', '\0');
+ } else {
+ NET2ADD('\r', '\n');
+ }
+ bol = flushline = 1;
+ break;
+ case IAC:
+ NET2ADD(IAC, IAC);
+ break;
+ default:
+ NETADD(c);
+ break;
+ }
+ } else if (c == IAC) {
+ NET2ADD(IAC, IAC);
+ } else {
+ NETADD(c);
+ }
+ }
+ if (count)
+ ring_consumed(&ttyiring, count);
+ return returnValue||count; /* Non-zero if we did anything */
+}
+\f
+/*
+ * Scheduler()
+ *
+ * Try to do something.
+ *
+ * If we do something useful, return 1; else return 0.
+ *
+ */
+
+
+ int
+Scheduler(block)
+ int block; /* should we block in the select ? */
+{
+ /* One wants to be a bit careful about setting returnValue
+ * to one, since a one implies we did some useful work,
+ * and therefore probably won't be called to block next
+ * time (TN3270 mode only).
+ */
+ int returnValue;
+ int netin, netout, netex, ttyin, ttyout;
+
+ /* Decide which rings should be processed */
+
+ netout = ring_full_count(&netoring) &&
+ (flushline ||
+ (my_want_state_is_wont(TELOPT_LINEMODE)
+#ifdef KLUDGELINEMODE
+ && (!kludgelinemode || my_want_state_is_do(TELOPT_SGA))
+#endif
+ ) ||
+ my_want_state_is_will(TELOPT_BINARY));
+ ttyout = ring_full_count(&ttyoring);
+
+#if defined(TN3270)
+ ttyin = ring_empty_count(&ttyiring) && (shell_active == 0);
+#else /* defined(TN3270) */
+ ttyin = ring_empty_count(&ttyiring);
+#endif /* defined(TN3270) */
+
+#if defined(TN3270)
+ netin = ring_empty_count(&netiring);
+# else /* !defined(TN3270) */
+ netin = !ISend && ring_empty_count(&netiring);
+# endif /* !defined(TN3270) */
+
+ netex = !SYNCHing;
+
+ /* If we have seen a signal recently, reset things */
+# if defined(TN3270) && defined(unix)
+ if (HaveInput) {
+ HaveInput = 0;
+ (void) signal(SIGIO, inputAvailable);
+ }
+#endif /* defined(TN3270) && defined(unix) */
+
+ /* Call to system code to process rings */
+
+ returnValue = process_rings(netin, netout, netex, ttyin, ttyout, !block);
+
+ /* Now, look at the input rings, looking for work to do. */
+
+ if (ring_full_count(&ttyiring)) {
+# if defined(TN3270)
+ if (In3270) {
+ int c;
+
+ c = DataFromTerminal(ttyiring.consume,
+ ring_full_consecutive(&ttyiring));
+ if (c) {
+ returnValue = 1;
+ ring_consumed(&ttyiring, c);
+ }
+ } else {
+# endif /* defined(TN3270) */
+ returnValue |= telsnd();
+# if defined(TN3270)
+ }
+# endif /* defined(TN3270) */
+ }
+
+ if (ring_full_count(&netiring)) {
+# if !defined(TN3270)
+ returnValue |= telrcv();
+# else /* !defined(TN3270) */
+ returnValue = Push3270();
+# endif /* !defined(TN3270) */
+ }
+ return returnValue;
+}
+\f
+/*
+ * Select from tty and network...
+ */
+ void
+telnet(user)
+ char *user;
+{
+ sys_telnet_init();
+
+#if defined(ENCRYPTION) || defined(AUTHENTICATION)
+ {
+ static char local_host[256] = { 0 };
+
+ if (!local_host[0]) {
+ gethostname(local_host, sizeof(local_host));
+ local_host[sizeof(local_host)-1] = 0;
+ }
+ auth_encrypt_init(local_host, hostname, "TELNET", 0);
+ auth_encrypt_user(user);
+ }
+#endif
+# if !defined(TN3270)
+ if (telnetport) {
+#if defined(AUTHENTICATION)
+ if (autologin)
+ send_will(TELOPT_AUTHENTICATION, 1);
+#endif
+#if defined(ENCRYPTION)
+ send_do(TELOPT_ENCRYPT, 1);
+ send_will(TELOPT_ENCRYPT, 1);
+#endif
+ send_do(TELOPT_SGA, 1);
+ send_will(TELOPT_TTYPE, 1);
+ send_will(TELOPT_NAWS, 1);
+ send_will(TELOPT_TSPEED, 1);
+ send_will(TELOPT_LFLOW, 1);
+ send_will(TELOPT_LINEMODE, 1);
+ send_will(TELOPT_ENVIRON, 1);
+ send_do(TELOPT_STATUS, 1);
+ if (env_getvalue((unsigned char *)"DISPLAY"))
+ send_will(TELOPT_XDISPLOC, 1);
+ if (eight)
+ tel_enter_binary(eight);
+ }
+# endif /* !defined(TN3270) */
+
+# if !defined(TN3270)
+ for (;;) {
+ int schedValue;
+
+ while ((schedValue = Scheduler(0)) != 0) {
+ if (schedValue == -1) {
+ setcommandmode();
+ return;
+ }
+ }
+
+ if (Scheduler(1) == -1) {
+ setcommandmode();
+ return;
+ }
+ }
+# else /* !defined(TN3270) */
+ for (;;) {
+ int schedValue;
+
+ while (!In3270 && !shell_active) {
+ if (Scheduler(1) == -1) {
+ setcommandmode();
+ return;
+ }
+ }
+
+ while ((schedValue = Scheduler(0)) != 0) {
+ if (schedValue == -1) {
+ setcommandmode();
+ return;
+ }
+ }
+ /* If there is data waiting to go out to terminal, don't
+ * schedule any more data for the terminal.
+ */
+ if (ring_full_count(&ttyoring)) {
+ schedValue = 1;
+ } else {
+ if (shell_active) {
+ if (shell_continue() == 0) {
+ ConnectScreen();
+ }
+ } else if (In3270) {
+ schedValue = DoTerminalOutput();
+ }
+ }
+ if (schedValue && (shell_active == 0)) {
+ if (Scheduler(1) == -1) {
+ setcommandmode();
+ return;
+ }
+ }
+ }
+# endif /* !defined(TN3270) */
+}
+\f
+#if 0 /* XXX - this not being in is a bug */
+/*
+ * nextitem()
+ *
+ * Return the address of the next "item" in the TELNET data
+ * stream. This will be the address of the next character if
+ * the current address is a user data character, or it will
+ * be the address of the character following the TELNET command
+ * if the current address is a TELNET IAC ("I Am a Command")
+ * character.
+ */
+
+ static char *
+nextitem(current)
+ char *current;
+{
+ if ((*current&0xff) != IAC) {
+ return current+1;
+ }
+ switch (*(current+1)&0xff) {
+ case DO:
+ case DONT:
+ case WILL:
+ case WONT:
+ return current+3;
+ case SB: /* loop forever looking for the SE */
+ {
+ register char *look = current+2;
+
+ for (;;) {
+ if ((*look++&0xff) == IAC) {
+ if ((*look++&0xff) == SE) {
+ return look;
+ }
+ }
+ }
+ }
+ default:
+ return current+2;
+ }
+}
+#endif /* 0 */
+
+/*
+ * netclear()
+ *
+ * We are about to do a TELNET SYNCH operation. Clear
+ * the path to the network.
+ *
+ * Things are a bit tricky since we may have sent the first
+ * byte or so of a previous TELNET command into the network.
+ * So, we have to scan the network buffer from the beginning
+ * until we are up to where we want to be.
+ *
+ * A side effect of what we do, just to keep things
+ * simple, is to clear the urgent data pointer. The principal
+ * caller should be setting the urgent data pointer AFTER calling
+ * us in any case.
+ */
+
+ static void
+netclear()
+{
+#if 0 /* XXX */
+ register char *thisitem, *next;
+ char *good;
+#define wewant(p) ((nfrontp > p) && ((*p&0xff) == IAC) && \
+ ((*(p+1)&0xff) != EC) && ((*(p+1)&0xff) != EL))
+
+ thisitem = netobuf;
+
+ while ((next = nextitem(thisitem)) <= netobuf.send) {
+ thisitem = next;
+ }
+
+ /* Now, thisitem is first before/at boundary. */
+
+ good = netobuf; /* where the good bytes go */
+
+ while (netoring.add > thisitem) {
+ if (wewant(thisitem)) {
+ int length;
+
+ next = thisitem;
+ do {
+ next = nextitem(next);
+ } while (wewant(next) && (nfrontp > next));
+ length = next-thisitem;
+ memcpy(good, thisitem, length);
+ good += length;
+ thisitem = next;
+ } else {
+ thisitem = nextitem(thisitem);
+ }
+ }
+
+#endif /* 0 */
+}
+\f
+/*
+ * These routines add various telnet commands to the data stream.
+ */
+
+ static void
+doflush()
+{
+ NET2ADD(IAC, DO);
+ NETADD(TELOPT_TM);
+ flushline = 1;
+ flushout = 1;
+ (void) ttyflush(1); /* Flush/drop output */
+ /* do printoption AFTER flush, otherwise the output gets tossed... */
+ printoption("SENT", DO, TELOPT_TM);
+}
+
+ void
+xmitAO()
+{
+ NET2ADD(IAC, AO);
+ printoption("SENT", IAC, AO);
+ if (autoflush) {
+ doflush();
+ }
+}
+
+
+ void
+xmitEL()
+{
+ NET2ADD(IAC, EL);
+ printoption("SENT", IAC, EL);
+}
+
+ void
+xmitEC()
+{
+ NET2ADD(IAC, EC);
+ printoption("SENT", IAC, EC);
+}
+
+
+ int
+dosynch()
+{
+ netclear(); /* clear the path to the network */
+ NETADD(IAC);
+ setneturg();
+ NETADD(DM);
+ printoption("SENT", IAC, DM);
+ return 1;
+}
+
+int want_status_response = 0;
+
+ int
+get_status()
+{
+ unsigned char tmp[16];
+ register unsigned char *cp;
+
+ if (my_want_state_is_dont(TELOPT_STATUS)) {
+ printf("Remote side does not support STATUS option\n");
+ return 0;
+ }
+ cp = tmp;
+
+ *cp++ = IAC;
+ *cp++ = SB;
+ *cp++ = TELOPT_STATUS;
+ *cp++ = TELQUAL_SEND;
+ *cp++ = IAC;
+ *cp++ = SE;
+ if (NETROOM() >= cp - tmp) {
+ ring_supply_data(&netoring, tmp, cp-tmp);
+ printsub('>', tmp+2, cp - tmp - 2);
+ }
+ ++want_status_response;
+ return 1;
+}
+
+ void
+intp()
+{
+ NET2ADD(IAC, IP);
+ printoption("SENT", IAC, IP);
+ flushline = 1;
+ if (autoflush) {
+ doflush();
+ }
+ if (autosynch) {
+ dosynch();
+ }
+}
+
+ void
+sendbrk()
+{
+ NET2ADD(IAC, BREAK);
+ printoption("SENT", IAC, BREAK);
+ flushline = 1;
+ if (autoflush) {
+ doflush();
+ }
+ if (autosynch) {
+ dosynch();
+ }
+}
+
+ void
+sendabort()
+{
+ NET2ADD(IAC, ABORT);
+ printoption("SENT", IAC, ABORT);
+ flushline = 1;
+ if (autoflush) {
+ doflush();
+ }
+ if (autosynch) {
+ dosynch();
+ }
+}
+
+ void
+sendsusp()
+{
+ NET2ADD(IAC, SUSP);
+ printoption("SENT", IAC, SUSP);
+ flushline = 1;
+ if (autoflush) {
+ doflush();
+ }
+ if (autosynch) {
+ dosynch();
+ }
+}
+
+ void
+sendeof()
+{
+ NET2ADD(IAC, xEOF);
+ printoption("SENT", IAC, xEOF);
+}
+
+ void
+sendayt()
+{
+ NET2ADD(IAC, AYT);
+ printoption("SENT", IAC, AYT);
+}
+
+/*
+ * Send a window size update to the remote system.
+ */
+
+ void
+sendnaws()
+{
+ long rows, cols;
+ unsigned char tmp[16];
+ register unsigned char *cp;
+
+ if (my_state_is_wont(TELOPT_NAWS))
+ return;
+
+#define PUTSHORT(cp, x) { if ((*cp++ = ((x)>>8)&0xff) == IAC) *cp++ = IAC; \
+ if ((*cp++ = ((x))&0xff) == IAC) *cp++ = IAC; }
+
+ if (TerminalWindowSize(&rows, &cols) == 0) { /* Failed */
+ return;
+ }
+
+ cp = tmp;
+
+ *cp++ = IAC;
+ *cp++ = SB;
+ *cp++ = TELOPT_NAWS;
+ PUTSHORT(cp, cols);
+ PUTSHORT(cp, rows);
+ *cp++ = IAC;
+ *cp++ = SE;
+ if (NETROOM() >= cp - tmp) {
+ ring_supply_data(&netoring, tmp, cp-tmp);
+ printsub('>', tmp+2, cp - tmp - 2);
+ }
+}
+
+ void
+tel_enter_binary(rw)
+ int rw;
+{
+ if (rw&1)
+ send_do(TELOPT_BINARY, 1);
+ if (rw&2)
+ send_will(TELOPT_BINARY, 1);
+}
+
+ void
+tel_leave_binary(rw)
+ int rw;
+{
+ if (rw&1)
+ send_dont(TELOPT_BINARY, 1);
+ if (rw&2)
+ send_wont(TELOPT_BINARY, 1);
+}
--- /dev/null
+/*
+ * Copyright (c) 1988, 1990 Regents of the University of California.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef lint
+static char sccsid[] = "@(#)terminal.c 5.4 (Berkeley) 12/18/92";
+#endif /* not lint */
+
+#include <arpa/telnet.h>
+#include <sys/types.h>
+
+#include "ring.h"
+
+#include "externs.h"
+#include "types.h"
+
+Ring ttyoring, ttyiring;
+unsigned char ttyobuf[2*BUFSIZ], ttyibuf[BUFSIZ];
+
+int termdata; /* Debugging flag */
+
+#ifdef USE_TERMIO
+# ifndef VDISCARD
+cc_t termFlushChar;
+# endif
+# ifndef VLNEXT
+cc_t termLiteralNextChar;
+# endif
+# ifndef VSUSP
+cc_t termSuspChar;
+# endif
+# ifndef VWERASE
+cc_t termWerasChar;
+# endif
+# ifndef VREPRINT
+cc_t termRprntChar;
+# endif
+# ifndef VSTART
+cc_t termStartChar;
+# endif
+# ifndef VSTOP
+cc_t termStopChar;
+# endif
+# ifndef VEOL
+cc_t termForw1Char;
+# endif
+# ifndef VEOL2
+cc_t termForw2Char;
+# endif
+# ifndef VSTATUS
+cc_t termAytChar;
+# endif
+#else
+cc_t termForw2Char;
+cc_t termAytChar;
+#endif
+
+/*
+ * initialize the terminal data structures.
+ */
+
+ void
+init_terminal()
+{
+ if (ring_init(&ttyoring, ttyobuf, sizeof ttyobuf) != 1) {
+ exit(1);
+ }
+ if (ring_init(&ttyiring, ttyibuf, sizeof ttyibuf) != 1) {
+ exit(1);
+ }
+ autoflush = TerminalAutoFlush();
+}
+
+
+/*
+ * Send as much data as possible to the terminal.
+ *
+ * Return value:
+ * -1: No useful work done, data waiting to go out.
+ * 0: No data was waiting, so nothing was done.
+ * 1: All waiting data was written out.
+ * n: All data - n was written out.
+ */
+
+
+ int
+ttyflush(drop)
+ int drop;
+{
+ register int n, n0, n1;
+
+ n0 = ring_full_count(&ttyoring);
+ if ((n1 = n = ring_full_consecutive(&ttyoring)) > 0) {
+ if (drop) {
+ TerminalFlushOutput();
+ /* we leave 'n' alone! */
+ } else {
+ n = TerminalWrite(ttyoring.consume, n);
+ }
+ }
+ if (n > 0) {
+ if (termdata && n) {
+ Dump('>', ttyoring.consume, n);
+ }
+ /*
+ * If we wrote everything, and the full count is
+ * larger than what we wrote, then write the
+ * rest of the buffer.
+ */
+ if (n1 == n && n0 > n) {
+ n1 = n0 - n;
+ if (!drop)
+ n1 = TerminalWrite(ttyoring.bottom, n1);
+ n += n1;
+ }
+ ring_consumed(&ttyoring, n);
+ }
+ if (n < 0)
+ return -1;
+ if (n == n0) {
+ if (n0)
+ return -1;
+ return 0;
+ }
+ return n0 - n + 1;
+}
+
+\f
+/*
+ * These routines decides on what the mode should be (based on the values
+ * of various global variables).
+ */
+
+
+ int
+getconnmode()
+{
+ extern int linemode;
+ int mode = 0;
+#ifdef KLUDGELINEMODE
+ extern int kludgelinemode;
+#endif
+
+ if (In3270)
+ return(MODE_FLOW);
+
+ if (my_want_state_is_dont(TELOPT_ECHO))
+ mode |= MODE_ECHO;
+
+ if (localflow)
+ mode |= MODE_FLOW;
+
+ if (my_want_state_is_will(TELOPT_BINARY))
+ mode |= MODE_INBIN;
+
+ if (his_want_state_is_will(TELOPT_BINARY))
+ mode |= MODE_OUTBIN;
+
+#ifdef KLUDGELINEMODE
+ if (kludgelinemode) {
+ if (my_want_state_is_dont(TELOPT_SGA)) {
+ mode |= (MODE_TRAPSIG|MODE_EDIT);
+ if (dontlecho && (clocks.echotoggle > clocks.modenegotiated)) {
+ mode &= ~MODE_ECHO;
+ }
+ }
+ return(mode);
+ }
+#endif
+ if (my_want_state_is_will(TELOPT_LINEMODE))
+ mode |= linemode;
+ return(mode);
+}
+
+ void
+setconnmode(force)
+ int force;
+{
+#ifdef ENCRYPTION
+ static int enc_passwd = 0;
+#endif
+ register int newmode;
+
+ newmode = getconnmode()|(force?MODE_FORCE:0);
+
+ TerminalNewMode(newmode);
+
+#ifdef ENCRYPTION
+ if ((newmode & (MODE_ECHO|MODE_EDIT)) == MODE_EDIT) {
+ if (my_want_state_is_will(TELOPT_ENCRYPT)
+ && (enc_passwd == 0) && !encrypt_output) {
+ encrypt_request_start(0, 0);
+ enc_passwd = 1;
+ }
+ } else {
+ if (enc_passwd) {
+ encrypt_request_end();
+ enc_passwd = 0;
+ }
+ }
+#endif
+
+}
+
+
+ void
+setcommandmode()
+{
+ TerminalNewMode(-1);
+}
--- /dev/null
+.\"
+.\" Copyright (c) 1990 The Regents of the University of California.
+.\" All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms are permitted provided
+.\" that: (1) source distributions retain this entire copyright notice and
+.\" comment, and (2) distributions including binaries display the following
+.\" acknowledgement: ``This product includes software developed by the
+.\" University of California, Berkeley and its contributors'' in the
+.\" documentation or other materials provided with the distribution and in
+.\" all advertising materials mentioning features or use of this software.
+.\" Neither the name of the University nor the names of its contributors may
+.\" be used to endorse or promote products derived from this software without
+.\" specific prior written permission.
+.\" THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
+.\" WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
+.\" MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+.\"
+.\" @(#)tmac.andoc 5.3 (Berkeley) 6/29/90
+.\"
+.de Dd
+.rm Dd
+.so tmac.doc
+.Dd \\$1 \\$2 \\$3 \\$4 \\$5 \\$6 \\$7 \\$8
+..
+.de TH
+.rm TH
+.so tmac.an.old
+.TH \\$1 \\$2 \\$3 \\$4 \\$5 \\$6 \\$7 \\$8
+..
--- /dev/null
+.\" Copyright (c) 1980 Regents of the University of California.
+.\" All rights reserved. The Berkeley software License Agreement
+.\" specifies the terms and conditions for redistribution.
+.\"
+.\" @(#)tmac.an.old 6.7 (Berkeley) 6/29/90
+.\"
+' DT, PD, SM, and B macros invoked internally.
+' # month name
+.if "\nd"0" .nr m \n(mo-1
+.if "\nm"0" .ds ]m January
+.if "\nm"1" .ds ]m February
+.if "\nm"2" .ds ]m March
+.if "\nm"3" .ds ]m April
+.if "\nm"4" .ds ]m May
+.if "\nm"5" .ds ]m June
+.if "\nm"6" .ds ]m July
+.if "\nm"7" .ds ]m August
+.if "\nm"8" .ds ]m September
+.if "\nm"9" .ds ]m October
+.if "\nm"10" .ds ]m November
+.if "\nm"11" .ds ]m December
+' # set the date
+.if n \{.nr m \nm+1
+. ie \nd .ds ]W Modified \nm/\nd/\ny
+. el .ds ]W Printed \n(mo/\n(dy/\n(yr\}
+.if t \{.ie \nd .ds ]W \*(]m \nd, 19\ny
+. el .ds ]W \*(]m \n(dy, 19\n(yr\}
+.if t .tr *\(**
+.ie n \{\
+. ds lq \&"\"
+. ds rq \&"\"
+.\}
+.el \{\
+. ds rq ''
+. ds lq ``
+.\}
+.de AT
+.if t \{\
+. ds ]W 7th Edition
+. if "\\$1"3" .ds ]W 7th Edition
+. if "\\$1"4" .ds ]W System III
+. if "\\$1"5" \{\
+. ie "\\$2"" .ds ]W System V
+. el .ds ]W System V Release \\$2
+. \}
+.\}
+..
+.de UC
+.if t \{\
+. ds ]W 3rd Berkeley Distribution
+. if "\\$1"3" .ds ]W 3rd Berkeley Distribution
+. if "\\$1"4" .ds ]W 4th Berkeley Distribution
+. if "\\$1"5" .ds ]W 4.2 Berkeley Distribution
+. if "\\$1"6" .ds ]W 4.3 Berkeley Distribution
+. if "\\$1"7" .ds ]W 4.4 Berkeley Distribution
+.\}
+..
+' # reset the basic page layout
+.de }E
+.}f
+.in \\n()Ru+\\n(INu
+.ll \\n(LLu
+..
+' # default tabs
+.de DT
+'ta .5i 1i 1.5i 2i 2.5i 3i 3.5i 4i 4.5i 5i 5.5i 6i 6.5i
+..
+' # set type font and size
+.de }f
+.ps 10
+.ft 1
+..
+' # handle the head of the page
+.de }H
+.ev 1
+.}C
+.ie "\*(.T"va" 'sp .1i
+.el 'sp .5i
+.ft 1
+.ps 10
+.tl @\\*(]H@\\*(]D@\\*(]H@
+'sp .5i
+.ev
+.ns
+..
+' # handle the foot of the page
+.de }F
+.ev 1
+.ft 1
+.ps 10
+'sp .5i
+.tl @\\*(]W@\\*(]L@%@
+'bp
+.ev
+..
+' # the cut mark
+.if n .ig
+.if !\nv=2 .ig
+.de }C
+.po 0i
+.lt 7.45i
+.tl '__''__'
+.po
+.lt
+..
+' # the final cut mark
+.de }M
+.}N
+.wh -1p }C
+.ll \\n(LLu
+..
+' # no runout unless there was a .TH
+.de }K
+.}N
+.pl 1
+.ll \\n(LLu
+..
+.em }K
+' # set title and heading
+.de TH
+.PD
+.DT
+.if n .nr IN .5i
+.if t .nr IN .5i
+.nr LL \\n(.l
+.ds ]H \\$1\|(\|\\$2\|)
+.ie "\\$5"" .ds ]D UNIX Programmer's Manual
+.el .ds ]D \\$5
+.wh 0 }H
+.if t .ie !"\*(.T"va" .wh -1i }F
+.if t .el .wh -1.4i }F
+.if n .wh -1.167i }F
+.em }M
+.if \\n(nl .bp 1
+.ds ]L \\$3
+.}E
+.DT
+.nr )I .5i
+.nr )R 0
+.if n .na
+.mk ka
+.if !'\\n(ka'-1' .bp
+.if t \{\
+. ie "\\$4"" .ds ]W 7th Edition
+. el .ds ]W \\$4
+.\}
+..
+' # section heading
+.de SH
+.ss 12
+.if "\\$2"SYNOPSIS" .ss 18
+.}X 0
+.nr )E 2
+.SM
+\&\\$1 \|\\$2 \|\\$3 \|\\$4 \|\\$5 \|\\$6
+..
+' # sub section heading
+.de SS
+.}X \\n()Ru+\\n(INu
+\&\\$1 \|\\$2 \|\\$3 \|\\$4 \|\\$5 \|\\$6
+.br
+..
+' # subroutine for section heading
+.de }X
+.}E
+.ti \\$1
+.sp \\n()Pu
+.ne 2
+.nr )R 0
+.fi
+.it 1 }N
+.B
+..
+' # end of SH (cf }X above and }N below)
+.de }2
+.nr )E 0
+.}E
+.nr )I .5i
+.ns
+..
+' # italic
+.de I
+.ft 2
+.it 1 }N
+.if !"\\$1"" \&\\$1 \\$2 \\$3 \\$4 \\$5 \\$6
+..
+' # bold
+.de B
+.ft 3
+.it 1 }N
+.if !"\\$1"" \&\\$1 \\$2 \\$3 \\$4 \\$5 \\$6
+..
+' # small
+.de SM
+.ps 9
+.it 1 }N
+.if !"\\$1"" \&\\$1 \\$2 \\$3 \\$4 \\$5 \\$6
+..
+' # combinations of Roman, italic, bold
+.de RI
+.}S 1 2 \& "\\$1" "\\$2" "\\$3" "\\$4" "\\$5" "\\$6"
+..
+.de VS
+'if '\\$1'4' .mc \s12\(br\s0
+..
+.de VE
+'mc
+..
+.de RB
+.}S 1 3 \& "\\$1" "\\$2" "\\$3" "\\$4" "\\$5" "\\$6"
+..
+.de IR
+.}S 2 1 \& "\\$1" "\\$2" "\\$3" "\\$4" "\\$5" "\\$6"
+..
+.de IB
+.}S 2 3 \& "\\$1" "\\$2" "\\$3" "\\$4" "\\$5" "\\$6"
+..
+.de BR
+.}S 3 1 \& "\\$1" "\\$2" "\\$3" "\\$4" "\\$5" "\\$6"
+..
+.de BI
+.}S 3 2 \& "\\$1" "\\$2" "\\$3" "\\$4" "\\$5" "\\$6"
+..
+' # make special case of shift out of italic
+.de }S
+.ds ]F
+.if "\\$1"2" .if !"\\$5"" .ds ]F\^
+.ie !"\\$4"" .}S \\$2 \\$1 "\\$3\f\\$1\\$4\\*(]F" "\\$5" "\\$6" "\\$7" "\\$8" "\\$9"
+.el \\$3
+.}f
+..
+' # paragraph
+.de LP
+.PP
+..
+.de PP
+.sp \\n()Pu
+.ne 2
+.}E
+.nr )I .5i
+.ns
+..
+' # synonym for .PP
+.de P
+.PP
+..
+' # paragraph distance
+.de PD
+.if t .nr )P .4v
+.if n .nr )P 1v
+.if !"\\$1"" .nr )P \\$1v
+..
+' # paragraph with hanging indent
+.de HP
+.sp \\n()Pu
+.ne 2
+.if !"\\$1"" .nr )I \\$1n
+.ll \\n(LLu
+.in \\n()Ru+\\n(INu+\\n()Iu
+.ti \\n()Ru+\\n(INu
+.}f
+..
+' # indented paragraph
+.de IP
+.TP \\$2
+\&\\$1
+..
+' # tagged paragraph (paragraph with hanging label)
+.de TP
+.if !"\\$1"" .nr )I \\$1n
+.sp \\n()Pu
+.ne 1.1v
+.in \\n()Ru
+.nr )E 1
+.ns
+.it 1 }N
+.di ]B
+..
+' # end of TP (cf }N below)
+.de }1
+.ds ]X \&\\*(]B\\
+.nr )E 0
+.if !"\\$1"" .nr )I \\$1n
+.}f
+.ll \\n(LLu
+.in \\n()Ru+\\n(INu+\\n()Iu
+.ti \\n(INu
+.ie !\\n()Iu+\\n()Ru-\w@\\*(]X@u-3p \{\\*(]X
+.br\}
+.el \\*(]X\h@|\\n()Iu+\\n()Ru@\c
+.}f
+..
+' # handle end of 1-line features
+.de }N
+.if \\n()E .br
+.di
+.if "\\n()E"0" .}f
+.if "\\n()E"1" .}1
+.if "\\n()E"2" .}2
+.nr )E 0
+..
+' # increase relative indent
+.de RS
+.nr ]\\n+()p \\n()I
+.nr )\\n()p \\n()R
+.ie !"\\$1"" .nr )R +\\$1n
+.el .nr )R +\\n()I
+.nr )I .5i
+.}E
+..
+.de DS
+.RS
+.nf
+.sp
+..
+' # decrease relative indent
+.de RE
+.if !"\\$1"" \{.ie "\\$1"0" .nr )p 1 1
+. el .nr )p \\$1 1\}
+.ds ]i \\*(]I\\n()p
+.ds ]r \\*(]R\\n()p
+.nr )I \\*(]i
+.nr )R \\*(]r
+.if \\n()p .nr )p -1
+.}E
+..
+.de DE
+.fi
+.RE
+.sp .5
+..
+.nr )p 0 1
+.ds ]I \\\\n(]
+.ds ]R \\\\n()
+.bd S B 3
+.if t .ds R \(rg
+.if n .ds R (Reg.)
+.ds S \s10
+.hy 14
+.if "\*(.T"va" .po -0.4i
--- /dev/null
+.\"
+.\" Copyright (c) 1990 The Regents of the University of California.
+.\" All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms are permitted provided
+.\" that: (1) source distributions retain this entire copyright notice and
+.\" comment, and (2) distributions including binaries display the following
+.\" acknowledgement: ``This product includes software developed by the
+.\" University of California, Berkeley and its contributors'' in the
+.\" documentation or other materials provided with the distribution and in
+.\" all advertising materials mentioning features or use of this software.
+.\" Neither the name of the University nor the names of its contributors may
+.\" be used to endorse or promote products derived from this software without
+.\" specific prior written permission.
+.\" THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
+.\" WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
+.\" MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+.\"
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+. ft \\n(cF
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+. ft \\n(cF
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+. ft \\n(cF
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+. if "\\*(n1"" .tm Usage: .Nm Name(s) ... \\*(Pu
+. ie !"\\*(iM"" .as f1 \&\\*(nM\\*(n1\\$1\fP
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+. ft \\n(cF
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+. if "\\*(iM"Op" .as f1 \&\ \&
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+.de Sq
+.nr eF 0
+.ie \\n(.$==0 \{\
+. ie "\\*(iM"" \&\\*(sL\&\\*sR
+. el .as f1 \&\\*(sL\&\\*(sR
+.\}
+.el \{\
+. ie "\\*(iM"" \{\
+. ds f1 \&\\*(sL
+. ds iM Sq
+. \}
+. el .as f1 \&\\*(sL
+. sB \\$1 \\$2 \\$3 \\$4 \\$5 \\$6 \\$7 \\$8 \\$9
+. ie \\n(eF>0 .\\*(g1 \\*(g2 \\*(g3 \\*(g4 \\*(g5 \\*(g6 \\*(g7 \\*(g8
+. el .as f1 \\*(g0
+. as f1 \\*(sR
+. if !"\\*(z2"" .as f1 \\*(z2
+. if "\\*(iM"Sq" \{\
+\&\\*(f1
+. ds f1
+. ds iM
+. \}
+. ds z2
+. rm g0 g1 g2 g3 g4 g5 g6 g7 g8 g9
+. nr eF 0
+.\}
+..
+.\"
+.\" Double quoted Items
+.de Dq
+.nr Ef 0
+.ie \\n(.$==0 \{\
+. ie "\\*(iM"" \&\\*(Lq\&\\*(Rq
+. el .as f1 \&\\*(Lq\&\\*(Rq
+.\}
+.el \{\
+. ie "\\*(iM"" \{\
+. ds f1 \&\\*(Lq
+. ds iM Dq
+. \}
+. el .as f1 \&\\*(Lq
+. Sb \\$1 \\$2 \\$3 \\$4 \\$5 \\$6 \\$7 \\$8 \\$9
+. ie \\n(Ef>0 .\\*(k1 \\*(k2 \\*(k3 \\*(k4 \\*(k5 \\*(k6 \\*(k7 \\*(k8
+. el .as f1 \\*(k0
+. as f1 \\*(Rq
+. if !"\\*(z4"" .as f1 \\*(z4
+. if "\\*(iM"Dq" \{\
+\&\\*(f1
+. ds f1
+. ds iM
+. \}
+. ds z4
+. rm k0 k1 k2 k3 k4 k5 k6 k7 k8 k9
+. nr Ef 0
+.\}
+..
+.\"
+.\" Parenthesis quoted Items
+.de Pq
+.nr pQ 0
+.ie \\n(.$==0 \{\
+. ie "\\*(iM"" \&(\&)
+. el .as f1 \&(\&)
+.\}
+.el \{\
+. ie "\\*(iM"" \{\
+. ds f1 \&(
+. ds iM Pq
+. \}
+. el .as f1 \&(
+. pB \\$1 \\$2 \\$3 \\$4 \\$5 \\$6 \\$7 \\$8 \\$9
+. ie \\n(pQ>0 .\\*(y1 \\*(y2 \\*(y3 \\*(y4 \\*(y5 \\*(y6 \\*(y7 \\*(y8
+. el .as f1 \\*(y0
+. as f1 \&)
+. if !"\\*(z3"" .as f1 \\*(z3
+. if "\\*(iM"Pq" \{\
+\&\\*(f1
+. ds f1
+. ds iM
+. \}
+. ds z3
+. rm y0 y1 y2 y3 y4 y5 y6 y7 y8 y9
+. nr pQ 0
+.\}
+..
+.\" eF, sB g[0-9] and z2
+.de sB
+.hy 0
+.ie \\n(.$==0 .tm Sick Logic: macro sB
+.el \{\
+. ie \\n(eF>=1 .nr eF \\n(eF+1
+. el \{\
+. mN \\$1
+. if \\n(mN .nr eF \\n(eF+1
+. \}
+. zR \\$1
+. ie \\n(zR .as z2 \\$1
+. el \{\
+. ie \\n(eF<1 .as g\\n(eF \\$1
+. el .as g\\n(eF \\$1
+. \}
+. if \\n(.$>1 \{\
+. zR \\$2
+. if \\n(zR==0 \{\
+. if \\n(eF<1 \{\
+. as g\\n(eF \& \&
+. \}
+. \}
+. sB \\$2 \\$3 \\$4 \\$5 \\$6 \\$7 \\$8 \\$9
+. \}
+.\}
+..
+.de Sb
+.hy 0
+.ie \\n(.$==0 .tm Sick Logic: macro Sb
+.el \{\
+. ie \\n(Ef>=1 .nr Ef \\n(Ef+1
+. el \{\
+. mN \\$1
+. if \\n(mN .nr Ef \\n(Ef+1
+. \}
+. zR \\$1
+. ie \\n(zR .as z4 \\$1
+. el \{\
+. ie \\n(Ef<1 .as k\\n(Ef \\$1
+. el .as k\\n(Ef \\$1
+. \}
+. if \\n(.$>1 \{\
+. zR \\$2
+. if \\n(zR==0 \{\
+. if \\n(Ef<1 \{\
+. as k\\n(Ef \& \&
+. \}
+. \}
+. Sb \\$2 \\$3 \\$4 \\$5 \\$6 \\$7 \\$8 \\$9
+. \}
+.\}
+..
+.de pB
+.hy 0
+.ie \\n(.$==0 .tm Sick Logic: macro pB
+.el \{\
+. ie \\n(pQ>=1 .nr pQ \\n(pQ+1
+. el \{\
+. mN \\$1
+. if \\n(mN .nr pQ \\n(pQ+1
+. \}
+. zR \\$1
+. ie \\n(zR .as z3 \\$1
+. el \{\
+. ie \\n(pQ<1 .as y\\n(pQ \\$1
+. el .as y\\n(pQ \\$1
+. \}
+. if \\n(.$>1 \{\
+. zR \\$2
+. if \\n(zR==0 \{\
+. if \\n(pQ<1 \{\
+. as y\\n(pQ \& \&
+. \}
+. \}
+. pB \\$2 \\$3 \\$4 \\$5 \\$6 \\$7 \\$8 \\$9
+. \}
+.\}
+..
+.de aQ
+.hy 0
+.ie \\n(.$==0 .tm Bad Syntax: .Aq
+.el \{\
+. ie \\n(aQ>=1 .nr aQ \\n(aQ+1
+. el \{\
+. mN \\$1
+. if \\n(mN .nr aQ \\n(aQ+1
+. \}
+. zR \\$1
+. ie \\n(zR .as aZ \\$1
+. el \{\
+. ie \\n(aQ<1 .as a\\n(aQ \\$1
+. el .as a\\n(aQ \\$1
+. \}
+. if \\n(.$>1 \{\
+. zR \\$2
+. if \\n(zR==0 \{\
+. if \\n(aQ<1 \{\
+. as a\\n(aQ \& \&
+. \}
+. \}
+. aQ \\$2 \\$3 \\$4 \\$5 \\$6 \\$7 \\$8 \\$9
+. \}
+.\}
+..
+.\" Angle Bracket Quoted Items
+.de Aq
+.nr aQ 0
+.ie \\n(.$==0 \{\
+. ie "\\*(iM"" \&<\&>
+. el .as f1 \&<\&>
+.\}
+.el \{\
+. ie "\\*(iM"" \{\
+. ds f1 \&<
+. ds iM Aq
+. \}
+. el .as f1 \&<
+. aQ \\$1 \\$2 \\$3 \\$4 \\$5 \\$6 \\$7 \\$8
+. ie \\n(aQ>0 .\\*(a1 \\*(a2 \\*(a3 \\*(a4 \\*(a5 \\*(a6 \\*(a7 \\*(a8
+. el .as f1 \\*(a0
+. as f1 \&>
+. if !"\\*(aZ"" .as f1 \\*(aZ
+. if "\\*(iM"Aq" \{\
+\&\\*(f1
+. ds f1
+. ds iM
+. \}
+. ds aZ
+. rm a0 a1 a2 a3 a4 a5 a6 a7 a8
+. nr aQ 0
+.\}
+..
+.\" macro Name test, return macro register value if true
+.de mN
+.nr mN 0
+.sW \\$1
+.if \\n(sW==2 \{\
+. if \\n(\\$1 .nr mN \\n(\\$1
+.\}
+..
+.\" Punctuation test (using z registers), return 1 if true
+.de zR
+.nr zR 0
+.sW \\$1
+.if \\n(sW=1 \{\
+. if \\n(z\\$1 .nr zR 1
+. \}
+..
+.\"
+.\" sW returns number of characters in a string
+.if t \{\
+.nr fW \w'\fC,'
+.de sW
+.nr sW \w'\fC\\$1'
+.\}
+.if n \{\
+.nr fW \w'0'
+.de sW
+.nr sW \w'\\$1'
+.\}
+.ie \\n(sW>=\\n(fW \{\
+. ie \\n(sW%\\n(fW .nr sW (\\n(sW/\\n(fW)+1
+. el .nr sW \\n(sW/\\n(fW
+.\}
+.el .nr sW 0
+..
+.\" Option Expression -
+.\" TODO - add line overflow check (right!)
+.nr eP 0
+.ds e1
+.nr oE 0
+.nr hP 0
+.ds hP
+.nr Ep 0
+.de Op
+.hy 0
+.if "\\*(iM"" \{\
+. ds iM Op
+. ds f1 \&
+.\}
+.as f1 \&\\*(lB
+.\" .tm Op: \\$1 \\$2 \\$3 \\$4 \\$5 \\$6 \\$7 \\$8 \\$9
+.dO \\$1 \\$2 \\$3 \\$4 \\$5 \\$6 \\$7 \\$8 \\$9
+.ie !"\\$1"Cx" .oE
+.el .nr oE \\n(oE+1
+..
+.\"
+.\" just for mike, with every bite of garlic in mind (oops, i mean burp).
+.\" dO: go dOwn an argument vector and test each argument to see if
+.\" a macro name or punctuation. stash in respective place along
+.\" with its arguments.
+.nr oO 0
+.nr oP 0
+.nr aO 0
+.de dO
+.mN \\$1
+.ie \\n(mN \{\
+. if \\n(oP \{\
+. if \\n(hP \{\
+. nr oZ 1
+. oZ
+. Oz
+. \}
+. if \\n(e1==1 \{\
+.\\*(e1 \\*(e2 \\*(e3 \\*(e4 \\*(e5 \\*(e6 \\*(e7 \\*(e8 \\*(e9
+. \}
+. uO
+. if !(\\n(oO:\\n(aO) .as f1 \& \&
+. \}
+. ie "\\$1"Op" \{\
+. as f1 \&\\*(lB
+. nr aO \\n(aO+1
+. \}
+. el \{\
+. nr eP \\n(eP+1
+. ds e\\n(eP \\$1
+. nr e\\n(eP 1
+. \}
+.\}
+.el \{\
+.\" .tm dO: $1: \\$1: eP \\n(eP e[\\n(eP]: \\*(e\\n(ePEE
+. zR \\$1
+. ie \\n(zR \{\
+.\" .tm dO:zR: $1: \\$1: eP \\n(eP e[\\n(eP]: \\*(e\\n(eP
+. nr hP \\n(hP+1
+. ds h\\n(hP \\$1
+. \}
+. el \{\
+.\" .tm dO:word $1: \\$1: eP \\n(eP e[\\n(eP]: \\*(e\\n(ePEE
+. if \\n(eP==0:\\n(e\\n(eP==1 .nr eP \\n(eP+1
+. if \\n(eZ .as e\\n(eP \& \&
+. as e\\n(eP \&\\$1
+.\" . ds e\\n(eP \&\\$1
+. nr eZ \\n(eZ+1
+. \}
+.\}
+.nr oP 1
+.ie \\n(.$>1 \{\
+. dO \\$2 \\$3 \\$4 \\$5 \\$6 \\$7 \\$8 \\$9
+.\}
+.el \{\
+. ie \\n(e1 \{\
+.\\*(e1 \\*(e2 \\*(e3 \\*(e4 \\*(e5 \\*(e6 \\*(e7 \\*(e8 \\*(e9
+. \}
+. el \{\
+. as f1 \\*(e1
+. \}
+.\}
+..
+.\" handle old style arguments such as the arg -Idir
+.\" in adb, .Oo is a toggle.
+.de Oo
+.ie \\n(oO .nr oO 0
+.el .nr oO 1
+..
+.\" stash punctuation
+.de oZ
+.if \\n(hP>=\\n(oZ \{\
+. nr eP \\n(eP+1
+. ds e\\n(eP \\*(h\\n(oZ
+. nr oZ \\n(oZ+1
+. oZ
+.\}
+..
+.\" clean up punctuation vector
+.de Oz
+.if \\n(hP>0 \{\
+. rm h\\n(hP
+. nr hP \\n(hP-1
+. Oz
+.\}
+..
+.\" uO: go back up created vector cleaning it up aong the way
+.de uO
+.if \\n(eP>0 \{\
+. rm e\\n(eP
+. rr e\\n(eP
+. nr eP \\n(eP-1
+. nr oP 0
+. nr eZ 0
+. uO
+.\}
+..
+.\" option end
+.de oE
+.uO
+.ie \\n(hP \{\
+. as f1 \\*(rB\\*(h1\\*(h2\\*(h3
+. Oz
+. nr oZ 0
+.\}
+.el \{\
+. as f1 \\*(rB
+.\}
+.ie "\\*(iM"Op" \{\
+. if \\n(aO .aO
+.if t \{\
+. if (\\n(.lu-\\n(.ku-\\n(.ou-(2*\\n(fWu))<\w'\fC\\*(f1'u .br
+.\}
+.if n \{\
+. nr aa \w'\\*(f1'u
+. if (\\n(.lu-\\n(.ku-\\n(.ou-\\n(aau)<=(7*\\n(fW) .br
+.\}
+\&\\*(f1
+. ds iM
+. ds f1
+. hy
+.\}
+.el .nr oE \\n(oE-1
+..
+.de aO
+.as f1 \\*(rB
+.nr aO \\n(aO-1
+.if \\n(aO >0 .aO
+..
+.\"
+.de Xr
+.if \\n(.$<=1 \{\
+. ie \\n(.$==1 \{\
+. if !"\\*(iM"" .as f1 \&\\*(xR\\$1\fP
+. if "\\*(iM"" \&\\*(xR\\$1\fP
+. \}
+. el .tm Xr Usage: .Xr manpage_name [section#] \\*(Pu
+.\}
+.if \\n(.$==2 \{\
+. zR \\$2
+. ie !"\\*(iM"" \{\
+. ie \\n(zR \&\\*(xR\\$1\fP\\$2
+. el \&\\*(xR\\$1\fP(\\$2)
+. \}
+. el \{\
+. ie \\n(zR .as f1 \&\\*(xR\\$1\fP\\$2
+. el .as f1 \&\\*(xR\\$1\fP(\\$2)
+. \}
+.\}
+.if \\n(.$>=3 \{\
+. zR \\$2
+. ie \\n(zR \{\
+. ie !"\\*(iM"" .as f1 \&\\*(xR\\$1\fP\\$2\\$3\\$4\\$5\\$6\\$7\\$8
+. el \&\\*(xR\\$1\fP\\$2\\$3\\$4\\$5\\$6\\$7\\$8
+. \}
+. el \{\
+. zR \\$3
+. ie \\n(zR \{\
+. if !"\\*(iM"" \{\
+. as f1 \&\\*(xR\\$1\fP(\\$2)\\$3\\$4\\$5\\$6\\$7\\$8
+. \}
+. if "\\*(iM"" \{\
+\&\\*(xR\\$1\fP(\\$2)\\$3\\$4\\$5\\$6\\$7\\$8
+. \}
+. \}
+. el \{\
+. tm zR = \\n(zR the arg is \\$3
+. tm Xr-XX Usage: .Xr manpage_name [section#] \\*(Pu
+. \}
+. \}
+.\}
+..
+.\"
+.\"
+.de Ex
+.tm Ex defunct, Use .Dl: \\$1 \\$2 \\$3 \\$4 \\$5 \\$6 \\$7 \\$8 \\$9
+..
+.\" Display (one) Line of text.
+.de Dl
+.ie "\\*(iM"" \{\
+' ta .5i 1i 1.5i 2i 2.5i 3i 3.5i 4i 4.5i 5i 5.5i 6i 6.5i
+. in \\n(.iu+\\n(Dsu
+. mN \\$1
+. ie \\n(mN .\\$1 \\$2 \\$3 \\$4 \\$5 \\$6 \\$7 \\$8 \\$9
+. el \{\
+. nr cF \\n(.f
+.\" Literal font is none specified
+\&\\*(lI\\$1 \\$2 \\$3 \\$4 \\$5 \\$6 \\$7 \\$8 \\$9
+. ft \\n(cF
+. \}
+. in \\n(.iu-\\n(Dsu
+.\}
+.el \{\
+. mN \\$1
+. ie \\n(mN .\\$1 \\$2 \\$3 \\$4 \\$5 \\$6 \\$7 \\$8
+. el \{\
+. nr cF \\n(.f
+. ds f1 \&\\*(lI\\&\\$1 \\$2 \\$3 \\$4 \\$5 \\$6 \\$7 \\$8
+. as f1 \&\f\\n(cF
+. \}
+.\}
+..
+.\"
+.\"
+.\" user set Tagged Paragraph Width (used in both Dp and Tp)
+.de Tw
+.ie \\n(.$==0 \{\
+. nr aa 0
+.\}
+.el \{\
+. mN \\$1
+. ie \\n(sW>2 \{\
+. nr tW (\\n(sW+3)*\\n(fWu)
+. \}
+. el \{\
+. ie \\n(mN .nr tW \\n(mN
+. el .nr tW \\$1
+. \}
+. nr tF 1
+.\}
+..
+.\"
+.de Dw
+.Tw \\$1
+..
+.\"
+.de Di
+.ie \\n(.$==0 \{\
+. nr tI \\n(Dsu
+.\}
+.el \{\
+. sW \\$1
+. if \\n(sW>=2 \{\
+. nr tI \\$1u
+. \}
+. if \\n(sW<2 \{\
+. if "\\$1"L" \{\
+. nr tI 0
+. \}
+. \}
+.\}
+..
+.\" tagged paragraph
+.\" initialize baby stack variables
+.nr np 0
+.nr p1 0
+.ds s\n(np
+.\"
+.de Tp
+.ie "\\$1"" .pE p s np
+.el \{\
+. ds iM Tp
+. mN \\$1
+. ie \\n(tF \{\
+. ds tC Tw
+. nr tC 1
+. nr tF 0
+. \}
+. el \{\
+. if !"Tw"\\*(s\\n(np" \{\
+. ie \\n(mN \{\
+. ds tC \\$1
+. nr tW \\n(mN
+. \}
+. el \{\
+. ds tC Tx
+. nr tW \\n(Tx
+. \}
+. if !"\\*(tC"\\*(s\\n(np" .nr tC 1
+. \}
+. \}
+. sp \\n(vVu
+. if !\\n(cR .ne 2
+. if \\n(tC \{\
+. nr np \\n(np+1
+. nr p\\n(np \\n(tW
+. ds s\\n(np \\*(tC
+. nr tC 0
+. ds tC
+. in \\n(.iu+\\n(p\\n(npu
+. \}
+. ie \\n(mN \{\
+. ds f1
+. \\$1 \\$2 \\$3 \\$4 \\$5 \\$6 \\$7 \\$8 \\$9
+. if !"\\$1"Cx" .pT st p np
+. \}
+. el \{\
+. br
+. ev 1
+. fi
+. di Td
+\&\\$1 \\$2 \\$3 \\$4 \\$5 \\$6 \\$7 \\$8 \\$9
+. br
+. di
+. ev
+. na
+. ds tD \\*(Td\\
+. pT di p np
+. \}
+.\}
+..
+.\"
+.\"
+.\" Complex Expression Macro
+.\"
+.\" TODO: add length across line boundary check (like Li)
+.de Cx
+.hy 0
+.ie \\n(.$==0 \{\
+. if "\\*(iM"Cx" \{\
+. ds iM
+. if \\n(oE .oE
+\&\\*(f1
+. ds f1
+. \}
+. if "\\*(iM"Tp" .pT st p np
+. if "\\*(iM"Dp" .pT st q mp
+.\}
+.el \{\
+. if "\\*(iM"" \{\
+. ds iM Cx
+. ds f1 \&
+. \}
+. mN \\$1
+.\" Here are the args: `\\$1' `\\$2' `\\$3' `\\$4'
+. ie \\n(mN .\\$1 \\$2 \\$3 \\$4 \\$5 \\$6 \\$7 \\$8 \\$9
+. el \{\
+. as f1 \&\\$1
+. if \\n(.$>1 .Cx \\$2 \\$3 \\$4 \\$5 \\$6 \\$7 \\$8 \\$9
+. \}
+.\}
+..
+.\" Prefix string in default font to content specified string
+.de Pf
+.Cx \\$1
+.\\$2 \\$3 \\$4 \\$5
+.Cx
+..
+.\" Suffix string in default font to content specified string
+.de Sf
+.Cx \\$1 \\$2
+.Cx \\$3
+.Cx
+..
+.\" Simple Option Begin
+.de Ob
+.hy 0
+.ie "\\*(iM"" \{\
+. ev 2
+. fi
+. di oB
+.\}
+.el \{\
+.tm shouldn't be here
+. as f1 \&[
+. mN \\$1
+. ie \\n(mN .\\$1 \\$2 \\$3 \\$4 \\$5 \\$6 \\$7 \\$8 \\$9
+. el \{\
+. as f1 \&\\$1
+. if \\n(.$>1 .Oc \\$2 \\$3 \\$4 \\$5 \\$6 \\$7 \\$8 \\$9
+. \}
+.\}
+..
+.de Oc
+.as f1 \&\\$1
+.if \\n(.$>1 .Oc \\$2 \\$3 \\$4 \\$5 \\$6 \\$7 \\$8 \\$9
+..
+.de Oe
+.hy 0
+.ie "\\*(iM"" \{\
+. br
+. di
+. ev
+. ds bO \\*(oB\\
+\&[\\*(bO\&]
+.\}
+.el \{\
+. as f1 \&]
+.\}
+..
+.\" White space for Cx
+.de Ws
+.Cx \&\ \&
+..
+.\" tagged paragraph
+.\" initialize baby stack variables
+.nr mp 0
+.nr q1 0
+.ds r\n(np
+.\"
+.\" Complex Dp tag
+.de Dc
+.Dp Cx \\$1 \\$2 \\$3 \\$4 \\$5 \\$6 \\$7 \\$8
+..
+.\" Complex Tp tag
+.de Tc
+.Tp Cx \\$1 \\$2 \\$3 \\$4 \\$5 \\$6 \\$7 \\$8
+..
+.\" Blended tag toggle
+.de Bt
+.ie \\n(tP==0 .nr tP 1
+.el .nr tP 0
+..
+.de Dp
+.ie "\\$1"" \{\
+. pE q r mp
+. sp \\n(vVu
+.\}
+.el \{\
+. ds iM Dp
+. mN \\$1
+. ie \\n(tF \{\
+. ds tC Tw
+. nr tC 1
+. nr tF 0
+. \}
+. el \{\
+. if !"Tw"\\*(r\\n(mp" \{\
+. ie \\n(mN \{\
+. ds tC \\$1
+. nr tW \\n(mN
+. \}
+. el \{\
+. ds tC Tx
+. nr tW \\n(Tx
+. \}
+. if !"\\*(tC"\\*(r\\n(mp" .nr tC 1
+. \}
+. \}
+. if !\\n(cR .ne 2
+. if \\n(tC \{\
+. nr mp \\n(mp+1
+. nr q\\n(mp \\n(tW
+. ds r\\n(mp \\*(tC
+. nr tC 0
+. ds tC
+. ie \\n(tIu==\\n(Dsu .nr i\\n(mp \\n(Dsu
+. el \{\
+. nr i\\n(mp \\n(tIu
+. nr tI \\n(Dsu
+. \}
+. in \\n(.iu+\\n(i\\n(mpu
+. sp \\n(vVu
+. in \\n(.iu+\\n(\\q\\n(mpu
+. \}
+. ie \\n(mN \{\
+. \\$1 \\$2 \\$3 \\$4 \\$5 \\$6 \\$7 \\$8 \\$9
+. if !"\\$1"Cx" .pT st q mp
+. \}
+. el \{\
+. br
+. ev 1
+. fi
+. di Td
+\&\\$1 \\$2 \\$3 \\$4 \\$5 \\$6 \\$7 \\$8 \\$9
+. br
+. di
+. ev
+. na
+. ds tD \\*(Td\\
+. pT di q mp
+. \}
+.\}
+..
+.\"
+.\" .pE number_stack string_stack counter
+.de pE
+.ie "\\$3"mp" \{\
+. in \\n(.iu-(\\n(\\$1\\n(\\$3u)-(\\n(i\\n(mpu)
+. rr i\\n(mp
+.\}
+.el .in \\n(.iu-\\n(\\$1\\n(\\$3u
+.\" .in \\n(.iu-\\n(\\$1\\n(\\$3u
+.if \\n(\\$3<=0 .tm Extraneous call .Tp or .Dp
+.rr \\$1\\n(\\$3
+.rm \\$2\\n(\\$3
+.nr \\$3 \\n(\\$3-1
+.ds iM
+..
+.\"
+.\" .pT [st or di] number_stack counter
+.de pT
+.ie "\\$1"st" \{\
+. nr bb \\n(\\$2\\n(\\$3u
+. ti -\\n(bbu
+. ie (\\n(\\$2\\n(\\$3u-2n)<=\w'\\*(f1'u \{\&\\*(f1\\*(tP
+. if \\n(tP==0 .br
+. \}
+. el \\*(f1\h'|\\n(\\$2\\n(\\$3u-'\c
+.\}
+.el \{\
+. ti -\\n(\\$2\\n(\\$3u
+. ie (\\n(\\$2\\n(\\$3u-2n)<=\\n(dlu \{\&\\*(tD\\*(tP
+. if !\\n(tP .br
+. \}
+. el \\*(tD\h'|\\n(\\$2\\n(\\$3u-'\c
+. if t 'ad
+.\}
+. ds iM
+. ds f1
+' fi
+..
+.\"
+.\" The new SH
+.\"
+.de Sh
+.\" set Sh state off, check for list state before calling indent (.In)
+.nr nS 0
+.nr sE 0
+.ie "\\$1"NAME" \{\
+.\" name state on, housekeep (headers & footers)
+. hK
+' in 0
+.\}
+.el \{\
+. if "\\$1"SYNOPSIS" .nr nS 1
+. in 0
+.\}
+.pL
+'sp
+.ns
+.ta .5i 1i 1.5i 2i 2.5i 3i 3.5i 4i 4.5i 5i 5.5i 6i 6.5i
+.if !\\n(cR .ne 3
+'fi
+\&\fB\\$1 \|\\$2 \|\\$3 \|\\$4 \|\\$5 \|\\$6 \|\\$7 \|\\$8 \|\\$9
+\&\fP\&
+.in \\n(.iu+\\n(Tiu
+.if "\\$1"SEE" .nr sE 1
+.ns
+..
+.\"
+.\" Nd minus sign for an en dash used in .Sh Name
+.de Nd
+\&\-\& \\$1 \\$2 \\$3 \\$4 \\$5 \\$6 \\$7 \\$8 \\$9
+..
+.de Ss
+.sp
+.ti -.25i
+\&\fB\\$1 \|\\$2 \|\\$3 \|\\$4 \|\\$5 \|\\$6 \|\\$7 \|\\$8 \|\\$9
+\&\fP\&
+.ta .5i 1i 1.5i 2i 2.5i 3i 3.5i 4i 4.5i 5i 5.5i 6i 6.5i
+.if !\\n(cR .ne 2
+.br
+..
+.\" .if "\\$1"Ss" .in \\n(.iu+\\n(sIu
+.\"..
+.\"
+.\"
+.\" Column Macro
+.\"
+.hy 0
+.de Cw
+.ie \\n(.$==0 \{\
+. br
+. in \\n(.iu-\\n(eWu
+. ta .5i 1i 1.5i 2i 2.5i 3i 3.5i 4i 4.5i 5i 5.5i 6i 6.5i
+.\}
+.el \{\
+. Pp
+. if \\n(.$==1 \{\
+. ta \w'\\$1 'u
+. nr eW \w'\\$1 'u
+' in \\n(.iu+\\n(eWu
+. \}
+. if \\n(.$==2 \{\
+. ta \w'\\$1 'u +\w'\\$2 'u
+. nr eW \w'\\$1 'u+\w'\\$2 'u
+' in \\n(.iu+\\n(eWu
+. \}
+. if \\n(.$==3 \{\
+. ta \w'\\$1 'u +\w'\\$2 'u +\w'\\$3 'u
+. nr eW \w'\\$1 'u+\w'\\$2 'u+\w'\\$3 'u
+' in \\n(.iu+\\n(eWu
+. \}
+. if \\n(.$==4 \{\
+. ta \w'\\$1 'u +\w'\\$2 'u +\w'\\$3 'u +\w'\\$4 'u
+. nr eW \w'\\$1 'u+\w'\\$2 'u+\w'\\$3 'u +\w'\\$4 'u
+' in \\n(.iu+\\n(eWu
+. \}
+. if \\n(.$==5 \{\
+.ta \w'\\$1 'u +\w'\\$2 'u +\w'\\$3 'u +\w'\\$4 'u +\w'\\$5 'u
+.nr eW \w'\\$1 'u +\w'\\$2 'u +\w'\\$3 'u +\w'\\$4 'u +\w'\\$5 'u
+' in \\n(.iu+\\n(eWu
+. \}
+.\}
+..
+.de Cl
+.ti -\\n(eWu
+.mN \\$1
+.ie \\n(mN .\\$1 \\$2 \\$3 \\$4 \\$5 \\$6 \\$7 \\$8 \\$9
+.el \\$1 \\$2 \\$3 \\$4 \\$5 \\$6 \\$7 \\$8 \\$9
+.\" .el \\$1 \\$2 \\$3 \\$4 \\$5 \\$6 \\$7 \\$8 \\$9
+..
+.nr dQ 0
+.de Ds
+.ie !"\\$1"" \{\
+. mN d\\$1
+. if \\n(mN \{\
+. nr dQ \\n(dQ+1
+. d\\$1
+. \}
+.\}
+.el .br
+.nf
+..
+.de Df
+.ie !"\\$1"" \{\
+. mN d\\$1
+. if \\n(mN \{\
+. nr dQ \\n(dQ+1
+. d\\$1
+. \}
+.\}
+.el .br
+..
+.de Dn
+\\$1 \\$2 \\$3 \\$4 \\$5 \\$6 \\$7 \\$8 \\$9
+.nf
+..
+.de dI
+.nr d\\n(dQ \\n(dIu
+.in \\n(.iu+\\n(dIu
+..
+.de dC
+.nr d\\n(dQ (\\n(.l-\\n(.i)/4u
+.in \\n(.iu+\\n(d\\n(dQu
+..
+.de dR
+.nr d\\n(dQ (\\n(.l/3)u
+.in \\n(.iu+\\n(d\\n(dQu
+..
+.de dL
+.nr aa 0
+..
+.de De
+.br
+.if \\n(d\\n(dQ \{\
+. in \\n(.iu-\\n(d\\n(dQu
+. rr d\\n(dQ
+. nr dQ \\n(dQ-1
+.\}
+.fi
+..
+.\"
+.de Fn
+.ie \\n(.$==0 \{\
+. tm Usage: .Fn function_name function_arg(s) ... \\*(Pu
+.\}
+.el \{\
+. nr cF \\n(.f
+. ie \\n(.$==1 .ds f1 \&\\*(nM\\$1\fP\\*(lP\fP\\*(rP\fP
+. el \{\
+. ds f1 \\*(nM\\$1\fP\\*(lP
+. nr aa 0
+. rC \\$2 \\$3 \\$4 \\$5 \\$6 \\$7 \\$8 \\$9
+. \}
+. if "\\*(iM"" \{\\&\\*(f1
+. ds f1
+. \}
+.\}
+..
+.\"
+.de rC
+.zR \\$1
+.ie \\n(zR \{\
+. as f1 \f\\n(cF\\*(rP\f\\n(cF\\$1\\$2\\$3\\$4\\$5\\$6\\$7
+.\}
+.el \{\
+. ie \\n(aa .as f1 \fP, \\*(aR\\$1
+. el .as f1 \\*(aR\\$1
+. nr aa 1
+. ie \\n(.$>1 .rC \\$2 \\$3 \\$4 \\$5 \\$6 \\$7
+. el .as f1 \fP\\*(rP\fP
+.\}
+..
--- /dev/null
+/*
+ * Copyright (c) 1988 Regents of the University of California.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef lint
+static char sccsid[] = "@(#)tn3270.c 5.2 (Berkeley) 3/1/91";
+#endif /* not lint */
+
+#include <sys/types.h>
+#include <arpa/telnet.h>
+
+#include "general.h"
+
+#include "defines.h"
+#include "ring.h"
+#include "externs.h"
+#include "fdset.h"
+
+#if defined(TN3270)
+
+#include "../ctlr/screen.h"
+#include "../general/globals.h"
+
+#include "../telextrn.h"
+#include "../ctlr/externs.h"
+
+#if defined(unix)
+int
+ HaveInput, /* There is input available to scan */
+ cursesdata, /* Do we dump curses data? */
+ sigiocount; /* Number of times we got a SIGIO */
+
+char tline[200];
+char *transcom = 0; /* transparent mode command (default: none) */
+#endif /* defined(unix) */
+
+char Ibuf[8*BUFSIZ], *Ifrontp, *Ibackp;
+
+static char sb_terminal[] = { IAC, SB,
+ TELOPT_TTYPE, TELQUAL_IS,
+ 'I', 'B', 'M', '-', '3', '2', '7', '8', '-', '2',
+ IAC, SE };
+#define SBTERMMODEL 13
+
+static int
+ Sent3270TerminalType; /* Have we said we are a 3270? */
+
+#endif /* defined(TN3270) */
+
+
+ void
+init_3270()
+{
+#if defined(TN3270)
+#if defined(unix)
+ HaveInput = 0;
+ sigiocount = 0;
+#endif /* defined(unix) */
+ Sent3270TerminalType = 0;
+ Ifrontp = Ibackp = Ibuf;
+ init_ctlr(); /* Initialize some things */
+ init_keyboard();
+ init_screen();
+ init_system();
+#endif /* defined(TN3270) */
+}
+
+\f
+#if defined(TN3270)
+
+/*
+ * DataToNetwork - queue up some data to go to network. If "done" is set,
+ * then when last byte is queued, we add on an IAC EOR sequence (so,
+ * don't call us with "done" until you want that done...)
+ *
+ * We actually do send all the data to the network buffer, since our
+ * only client needs for us to do that.
+ */
+
+ int
+DataToNetwork(buffer, count, done)
+ register char *buffer; /* where the data is */
+ register int count; /* how much to send */
+ int done; /* is this the last of a logical block */
+{
+ register int loop, c;
+ int origCount;
+
+ origCount = count;
+
+ while (count) {
+ /* If not enough room for EORs, IACs, etc., wait */
+ if (NETROOM() < 6) {
+ fd_set o;
+
+ FD_ZERO(&o);
+ netflush();
+ while (NETROOM() < 6) {
+ FD_SET(net, &o);
+ (void) select(net+1, (fd_set *) 0, &o, (fd_set *) 0,
+ (struct timeval *) 0);
+ netflush();
+ }
+ }
+ c = ring_empty_count(&netoring);
+ if (c > count) {
+ c = count;
+ }
+ loop = c;
+ while (loop) {
+ if (((unsigned char)*buffer) == IAC) {
+ break;
+ }
+ buffer++;
+ loop--;
+ }
+ if ((c = c-loop)) {
+ ring_supply_data(&netoring, buffer-c, c);
+ count -= c;
+ }
+ if (loop) {
+ NET2ADD(IAC, IAC);
+ count--;
+ buffer++;
+ }
+ }
+
+ if (done) {
+ NET2ADD(IAC, EOR);
+ netflush(); /* try to move along as quickly as ... */
+ }
+ return(origCount - count);
+}
+
+
+#if defined(unix)
+ void
+inputAvailable()
+{
+ HaveInput = 1;
+ sigiocount++;
+}
+#endif /* defined(unix) */
+
+ void
+outputPurge()
+{
+ (void) ttyflush(1);
+}
+
+
+/*
+ * The following routines are places where the various tn3270
+ * routines make calls into telnet.c.
+ */
+
+/*
+ * DataToTerminal - queue up some data to go to terminal.
+ *
+ * Note: there are people who call us and depend on our processing
+ * *all* the data at one time (thus the select).
+ */
+
+ int
+DataToTerminal(buffer, count)
+ register char *buffer; /* where the data is */
+ register int count; /* how much to send */
+{
+ register int c;
+ int origCount;
+
+ origCount = count;
+
+ while (count) {
+ if (TTYROOM() == 0) {
+#if defined(unix)
+ fd_set o;
+
+ FD_ZERO(&o);
+#endif /* defined(unix) */
+ (void) ttyflush(0);
+ while (TTYROOM() == 0) {
+#if defined(unix)
+ FD_SET(tout, &o);
+ (void) select(tout+1, (fd_set *) 0, &o, (fd_set *) 0,
+ (struct timeval *) 0);
+#endif /* defined(unix) */
+ (void) ttyflush(0);
+ }
+ }
+ c = TTYROOM();
+ if (c > count) {
+ c = count;
+ }
+ ring_supply_data(&ttyoring, buffer, c);
+ count -= c;
+ buffer += c;
+ }
+ return(origCount);
+}
+\f
+
+/*
+ * Push3270 - Try to send data along the 3270 output (to screen) direction.
+ */
+
+ int
+Push3270()
+{
+ int save = ring_full_count(&netiring);
+
+ if (save) {
+ if (Ifrontp+save > Ibuf+sizeof Ibuf) {
+ if (Ibackp != Ibuf) {
+ memcpy(Ibuf, Ibackp, Ifrontp-Ibackp);
+ Ifrontp -= (Ibackp-Ibuf);
+ Ibackp = Ibuf;
+ }
+ }
+ if (Ifrontp+save < Ibuf+sizeof Ibuf) {
+ (void)telrcv();
+ }
+ }
+ return save != ring_full_count(&netiring);
+}
+
+
+/*
+ * Finish3270 - get the last dregs of 3270 data out to the terminal
+ * before quitting.
+ */
+
+ void
+Finish3270()
+{
+ while (Push3270() || !DoTerminalOutput()) {
+#if defined(unix)
+ HaveInput = 0;
+#endif /* defined(unix) */
+ ;
+ }
+}
+
+
+/* StringToTerminal - output a null terminated string to the terminal */
+
+ void
+StringToTerminal(s)
+ char *s;
+{
+ int count;
+
+ count = strlen(s);
+ if (count) {
+ (void) DataToTerminal(s, count); /* we know it always goes... */
+ }
+}
+
+
+#if ((!defined(NOT43)) || defined(PUTCHAR))
+/* _putchar - output a single character to the terminal. This name is so that
+ * curses(3x) can call us to send out data.
+ */
+
+ void
+_putchar(c)
+ char c;
+{
+#if defined(sun) /* SunOS 4.0 bug */
+ c &= 0x7f;
+#endif /* defined(sun) */
+ if (cursesdata) {
+ Dump('>', &c, 1);
+ }
+ if (!TTYROOM()) {
+ (void) DataToTerminal(&c, 1);
+ } else {
+ TTYADD(c);
+ }
+}
+#endif /* ((!defined(NOT43)) || defined(PUTCHAR)) */
+
+ void
+SetIn3270()
+{
+ if (Sent3270TerminalType && my_want_state_is_will(TELOPT_BINARY)
+ && my_want_state_is_do(TELOPT_BINARY) && !donebinarytoggle) {
+ if (!In3270) {
+ In3270 = 1;
+ Init3270(); /* Initialize 3270 functions */
+ /* initialize terminal key mapping */
+ InitTerminal(); /* Start terminal going */
+ setconnmode(0);
+ }
+ } else {
+ if (In3270) {
+ StopScreen(1);
+ In3270 = 0;
+ Stop3270(); /* Tell 3270 we aren't here anymore */
+ setconnmode(0);
+ }
+ }
+}
+
+/*
+ * tn3270_ttype()
+ *
+ * Send a response to a terminal type negotiation.
+ *
+ * Return '0' if no more responses to send; '1' if a response sent.
+ */
+
+ int
+tn3270_ttype()
+{
+ /*
+ * Try to send a 3270 type terminal name. Decide which one based
+ * on the format of our screen, and (in the future) color
+ * capaiblities.
+ */
+ InitTerminal(); /* Sets MaxNumberColumns, MaxNumberLines */
+ if ((MaxNumberLines >= 24) && (MaxNumberColumns >= 80)) {
+ Sent3270TerminalType = 1;
+ if ((MaxNumberLines >= 27) && (MaxNumberColumns >= 132)) {
+ MaxNumberLines = 27;
+ MaxNumberColumns = 132;
+ sb_terminal[SBTERMMODEL] = '5';
+ } else if (MaxNumberLines >= 43) {
+ MaxNumberLines = 43;
+ MaxNumberColumns = 80;
+ sb_terminal[SBTERMMODEL] = '4';
+ } else if (MaxNumberLines >= 32) {
+ MaxNumberLines = 32;
+ MaxNumberColumns = 80;
+ sb_terminal[SBTERMMODEL] = '3';
+ } else {
+ MaxNumberLines = 24;
+ MaxNumberColumns = 80;
+ sb_terminal[SBTERMMODEL] = '2';
+ }
+ NumberLines = 24; /* before we start out... */
+ NumberColumns = 80;
+ ScreenSize = NumberLines*NumberColumns;
+ if ((MaxNumberLines*MaxNumberColumns) > MAXSCREENSIZE) {
+ ExitString("Programming error: MAXSCREENSIZE too small.\n",
+ 1);
+ /*NOTREACHED*/
+ }
+ printsub('>', sb_terminal+2, sizeof sb_terminal-2);
+ ring_supply_data(&netoring, sb_terminal, sizeof sb_terminal);
+ return 1;
+ } else {
+ return 0;
+ }
+}
+
+#if defined(unix)
+ void
+settranscom(argc, argv)
+ int argc;
+ char *argv[];
+{
+ int i;
+
+ if (argc == 1 && transcom) {
+ transcom = 0;
+ }
+ if (argc == 1) {
+ return;
+ }
+ transcom = tline;
+ (void) strcpy(transcom, argv[1]);
+ for (i = 2; i < argc; ++i) {
+ (void) strcat(transcom, " ");
+ (void) strcat(transcom, argv[i]);
+ }
+}
+#endif /* defined(unix) */
+
+#endif /* defined(TN3270) */
--- /dev/null
+/*
+ * Copyright (c) 1988 Regents of the University of California.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * @(#)types.h 5.1 (Berkeley) 9/14/90
+ */
+
+typedef struct {
+ char *modedescriptions;
+ char modetype;
+} Modelist;
+
+extern Modelist modelist[];
+
+typedef struct {
+ int
+ system, /* what the current time is */
+ echotoggle, /* last time user entered echo character */
+ modenegotiated, /* last time operating mode negotiated */
+ didnetreceive, /* last time we read data from network */
+ gotDM; /* when did we last see a data mark */
+} Clocks;
+
+extern Clocks clocks;
--- /dev/null
+/*
+ * Copyright (c) 1988 Regents of the University of California.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef lint
+static char sccsid[] = "@(#)utilities.c 5.6 (Berkeley) 1/19/93";
+#endif /* not lint */
+
+#define TELOPTS
+#define TELCMDS
+#define SLC_NAMES
+#include <arpa/telnet.h>
+#include <sys/types.h>
+#include <sys/time.h>
+
+#include <ctype.h>
+
+#include "general.h"
+
+#include "fdset.h"
+
+#include "ring.h"
+
+#include "defines.h"
+
+#include "externs.h"
+
+FILE *NetTrace = 0; /* Not in bss, since needs to stay */
+int prettydump;
+
+/*
+ * upcase()
+ *
+ * Upcase (in place) the argument.
+ */
+
+ void
+upcase(argument)
+ register char *argument;
+{
+ register int c;
+
+ while ((c = *argument) != 0) {
+ if (islower(c)) {
+ *argument = toupper(c);
+ }
+ argument++;
+ }
+}
+
+/*
+ * SetSockOpt()
+ *
+ * Compensate for differences in 4.2 and 4.3 systems.
+ */
+
+ int
+SetSockOpt(fd, level, option, yesno)
+ int fd, level, option, yesno;
+{
+#ifndef NOT43
+ return setsockopt(fd, level, option,
+ (char *)&yesno, sizeof yesno);
+#else /* NOT43 */
+ if (yesno == 0) { /* Can't do that in 4.2! */
+ fprintf(stderr, "Error: attempt to turn off an option 0x%x.\n",
+ option);
+ return -1;
+ }
+ return setsockopt(fd, level, option, 0, 0);
+#endif /* NOT43 */
+}
+\f
+/*
+ * The following are routines used to print out debugging information.
+ */
+
+unsigned char NetTraceFile[256] = "(standard output)";
+
+ void
+SetNetTrace(file)
+ register char *file;
+{
+ if (NetTrace && NetTrace != stdout)
+ fclose(NetTrace);
+ if (file && (strcmp(file, "-") != 0)) {
+ NetTrace = fopen(file, "w");
+ if (NetTrace) {
+ strcpy((char *)NetTraceFile, file);
+ return;
+ }
+ fprintf(stderr, "Cannot open %s.\n", file);
+ }
+ NetTrace = stdout;
+ strcpy((char *)NetTraceFile, "(standard output)");
+}
+
+ void
+Dump(direction, buffer, length)
+ char direction;
+ unsigned char *buffer;
+ int length;
+{
+# define BYTES_PER_LINE 32
+# define min(x,y) ((x<y)? x:y)
+ unsigned char *pThis;
+ int offset;
+ extern pettydump;
+
+ offset = 0;
+
+ while (length) {
+ /* print one line */
+ fprintf(NetTrace, "%c 0x%x\t", direction, offset);
+ pThis = buffer;
+ if (prettydump) {
+ buffer = buffer + min(length, BYTES_PER_LINE/2);
+ while (pThis < buffer) {
+ fprintf(NetTrace, "%c%.2x",
+ (((*pThis)&0xff) == 0xff) ? '*' : ' ',
+ (*pThis)&0xff);
+ pThis++;
+ }
+ length -= BYTES_PER_LINE/2;
+ offset += BYTES_PER_LINE/2;
+ } else {
+ buffer = buffer + min(length, BYTES_PER_LINE);
+ while (pThis < buffer) {
+ fprintf(NetTrace, "%.2x", (*pThis)&0xff);
+ pThis++;
+ }
+ length -= BYTES_PER_LINE;
+ offset += BYTES_PER_LINE;
+ }
+ if (NetTrace == stdout) {
+ fprintf(NetTrace, "\r\n");
+ } else {
+ fprintf(NetTrace, "\n");
+ }
+ if (length < 0) {
+ fflush(NetTrace);
+ return;
+ }
+ /* find next unique line */
+ }
+ fflush(NetTrace);
+}
+
+
+ void
+printoption(direction, cmd, option)
+ char *direction;
+ int cmd, option;
+{
+ if (!showoptions)
+ return;
+ if (cmd == IAC) {
+ if (TELCMD_OK(option))
+ fprintf(NetTrace, "%s IAC %s", direction, TELCMD(option));
+ else
+ fprintf(NetTrace, "%s IAC %d", direction, option);
+ } else {
+ register char *fmt;
+ fmt = (cmd == WILL) ? "WILL" : (cmd == WONT) ? "WONT" :
+ (cmd == DO) ? "DO" : (cmd == DONT) ? "DONT" : 0;
+ if (fmt) {
+ fprintf(NetTrace, "%s %s ", direction, fmt);
+ if (TELOPT_OK(option))
+ fprintf(NetTrace, "%s", TELOPT(option));
+ else if (option == TELOPT_EXOPL)
+ fprintf(NetTrace, "EXOPL");
+ else
+ fprintf(NetTrace, "%d", option);
+ } else
+ fprintf(NetTrace, "%s %d %d", direction, cmd, option);
+ }
+ if (NetTrace == stdout)
+ fprintf(NetTrace, "\r\n");
+ else
+ fprintf(NetTrace, "\n");
+ return;
+}
+
+ void
+optionstatus()
+{
+ register int i;
+ extern char will_wont_resp[], do_dont_resp[];
+
+ for (i = 0; i < 256; i++) {
+ if (do_dont_resp[i]) {
+ if (TELOPT_OK(i))
+ printf("resp DO_DONT %s: %d\n", TELOPT(i), do_dont_resp[i]);
+ else if (TELCMD_OK(i))
+ printf("resp DO_DONT %s: %d\n", TELCMD(i), do_dont_resp[i]);
+ else
+ printf("resp DO_DONT %d: %d\n", i,
+ do_dont_resp[i]);
+ if (my_want_state_is_do(i)) {
+ if (TELOPT_OK(i))
+ printf("want DO %s\n", TELOPT(i));
+ else if (TELCMD_OK(i))
+ printf("want DO %s\n", TELCMD(i));
+ else
+ printf("want DO %d\n", i);
+ } else {
+ if (TELOPT_OK(i))
+ printf("want DONT %s\n", TELOPT(i));
+ else if (TELCMD_OK(i))
+ printf("want DONT %s\n", TELCMD(i));
+ else
+ printf("want DONT %d\n", i);
+ }
+ } else {
+ if (my_state_is_do(i)) {
+ if (TELOPT_OK(i))
+ printf(" DO %s\n", TELOPT(i));
+ else if (TELCMD_OK(i))
+ printf(" DO %s\n", TELCMD(i));
+ else
+ printf(" DO %d\n", i);
+ }
+ }
+ if (will_wont_resp[i]) {
+ if (TELOPT_OK(i))
+ printf("resp WILL_WONT %s: %d\n", TELOPT(i), will_wont_resp[i]);
+ else if (TELCMD_OK(i))
+ printf("resp WILL_WONT %s: %d\n", TELCMD(i), will_wont_resp[i]);
+ else
+ printf("resp WILL_WONT %d: %d\n",
+ i, will_wont_resp[i]);
+ if (my_want_state_is_will(i)) {
+ if (TELOPT_OK(i))
+ printf("want WILL %s\n", TELOPT(i));
+ else if (TELCMD_OK(i))
+ printf("want WILL %s\n", TELCMD(i));
+ else
+ printf("want WILL %d\n", i);
+ } else {
+ if (TELOPT_OK(i))
+ printf("want WONT %s\n", TELOPT(i));
+ else if (TELCMD_OK(i))
+ printf("want WONT %s\n", TELCMD(i));
+ else
+ printf("want WONT %d\n", i);
+ }
+ } else {
+ if (my_state_is_will(i)) {
+ if (TELOPT_OK(i))
+ printf(" WILL %s\n", TELOPT(i));
+ else if (TELCMD_OK(i))
+ printf(" WILL %s\n", TELCMD(i));
+ else
+ printf(" WILL %d\n", i);
+ }
+ }
+ }
+
+}
+
+ void
+printsub(direction, pointer, length)
+ char direction; /* '<' or '>' */
+ unsigned char *pointer; /* where suboption data sits */
+ int length; /* length of suboption data */
+{
+ register int i;
+ char buf[512];
+ extern int want_status_response;
+
+ if (showoptions || direction == 0 ||
+ (want_status_response && (pointer[0] == TELOPT_STATUS))) {
+ if (direction) {
+ fprintf(NetTrace, "%s IAC SB ",
+ (direction == '<')? "RCVD":"SENT");
+ if (length >= 3) {
+ register int j;
+
+ i = pointer[length-2];
+ j = pointer[length-1];
+
+ if (i != IAC || j != SE) {
+ fprintf(NetTrace, "(terminated by ");
+ if (TELOPT_OK(i))
+ fprintf(NetTrace, "%s ", TELOPT(i));
+ else if (TELCMD_OK(i))
+ fprintf(NetTrace, "%s ", TELCMD(i));
+ else
+ fprintf(NetTrace, "%d ", i);
+ if (TELOPT_OK(j))
+ fprintf(NetTrace, "%s", TELOPT(j));
+ else if (TELCMD_OK(j))
+ fprintf(NetTrace, "%s", TELCMD(j));
+ else
+ fprintf(NetTrace, "%d", j);
+ fprintf(NetTrace, ", not IAC SE!) ");
+ }
+ }
+ length -= 2;
+ }
+ if (length < 1) {
+ fprintf(NetTrace, "(Empty suboption???)");
+ return;
+ }
+ switch (pointer[0]) {
+ case TELOPT_TTYPE:
+ fprintf(NetTrace, "TERMINAL-TYPE ");
+ switch (pointer[1]) {
+ case TELQUAL_IS:
+ fprintf(NetTrace, "IS \"%.*s\"", length-2, (char *)pointer+2);
+ break;
+ case TELQUAL_SEND:
+ fprintf(NetTrace, "SEND");
+ break;
+ default:
+ fprintf(NetTrace,
+ "- unknown qualifier %d (0x%x).",
+ pointer[1], pointer[1]);
+ }
+ break;
+ case TELOPT_TSPEED:
+ fprintf(NetTrace, "TERMINAL-SPEED");
+ if (length < 2) {
+ fprintf(NetTrace, " (empty suboption???)");
+ break;
+ }
+ switch (pointer[1]) {
+ case TELQUAL_IS:
+ fprintf(NetTrace, " IS ");
+ fprintf(NetTrace, "%.*s", length-2, (char *)pointer+2);
+ break;
+ default:
+ if (pointer[1] == 1)
+ fprintf(NetTrace, " SEND");
+ else
+ fprintf(NetTrace, " %d (unknown)", pointer[1]);
+ for (i = 2; i < length; i++)
+ fprintf(NetTrace, " ?%d?", pointer[i]);
+ break;
+ }
+ break;
+
+ case TELOPT_LFLOW:
+ fprintf(NetTrace, "TOGGLE-FLOW-CONTROL");
+ if (length < 2) {
+ fprintf(NetTrace, " (empty suboption???)");
+ break;
+ }
+ switch (pointer[1]) {
+ case LFLOW_OFF:
+ fprintf(NetTrace, " OFF"); break;
+ case LFLOW_ON:
+ fprintf(NetTrace, " ON"); break;
+ case LFLOW_RESTART_ANY:
+ fprintf(NetTrace, " RESTART-ANY"); break;
+ case LFLOW_RESTART_XON:
+ fprintf(NetTrace, " RESTART-XON"); break;
+ default:
+ fprintf(NetTrace, " %d (unknown)", pointer[1]);
+ }
+ for (i = 2; i < length; i++)
+ fprintf(NetTrace, " ?%d?", pointer[i]);
+ break;
+
+ case TELOPT_NAWS:
+ fprintf(NetTrace, "NAWS");
+ if (length < 2) {
+ fprintf(NetTrace, " (empty suboption???)");
+ break;
+ }
+ if (length == 2) {
+ fprintf(NetTrace, " ?%d?", pointer[1]);
+ break;
+ }
+ fprintf(NetTrace, " %d %d (%d)",
+ pointer[1], pointer[2],
+ (int)((((unsigned int)pointer[1])<<8)|((unsigned int)pointer[2])));
+ if (length == 4) {
+ fprintf(NetTrace, " ?%d?", pointer[3]);
+ break;
+ }
+ fprintf(NetTrace, " %d %d (%d)",
+ pointer[3], pointer[4],
+ (int)((((unsigned int)pointer[3])<<8)|((unsigned int)pointer[4])));
+ for (i = 5; i < length; i++)
+ fprintf(NetTrace, " ?%d?", pointer[i]);
+ break;
+
+#if defined(AUTHENTICATION)
+ case TELOPT_AUTHENTICATION:
+ fprintf(NetTrace, "AUTHENTICATION");
+ if (length < 2) {
+ fprintf(NetTrace, " (empty suboption???)");
+ break;
+ }
+ switch (pointer[1]) {
+ case TELQUAL_REPLY:
+ case TELQUAL_IS:
+ fprintf(NetTrace, " %s ", (pointer[1] == TELQUAL_IS) ?
+ "IS" : "REPLY");
+ if (AUTHTYPE_NAME_OK(pointer[2]))
+ fprintf(NetTrace, "%s ", AUTHTYPE_NAME(pointer[2]));
+ else
+ fprintf(NetTrace, "%d ", pointer[2]);
+ if (length < 3) {
+ fprintf(NetTrace, "(partial suboption???)");
+ break;
+ }
+ fprintf(NetTrace, "%s|%s",
+ ((pointer[3] & AUTH_WHO_MASK) == AUTH_WHO_CLIENT) ?
+ "CLIENT" : "SERVER",
+ ((pointer[3] & AUTH_HOW_MASK) == AUTH_HOW_MUTUAL) ?
+ "MUTUAL" : "ONE-WAY");
+
+ auth_printsub(&pointer[1], length - 1, buf, sizeof(buf));
+ fprintf(NetTrace, "%s", buf);
+ break;
+
+ case TELQUAL_SEND:
+ i = 2;
+ fprintf(NetTrace, " SEND ");
+ while (i < length) {
+ if (AUTHTYPE_NAME_OK(pointer[i]))
+ fprintf(NetTrace, "%s ", AUTHTYPE_NAME(pointer[i]));
+ else
+ fprintf(NetTrace, "%d ", pointer[i]);
+ if (++i >= length) {
+ fprintf(NetTrace, "(partial suboption???)");
+ break;
+ }
+ fprintf(NetTrace, "%s|%s ",
+ ((pointer[i] & AUTH_WHO_MASK) == AUTH_WHO_CLIENT) ?
+ "CLIENT" : "SERVER",
+ ((pointer[i] & AUTH_HOW_MASK) == AUTH_HOW_MUTUAL) ?
+ "MUTUAL" : "ONE-WAY");
+ ++i;
+ }
+ break;
+
+ case TELQUAL_NAME:
+ i = 2;
+ fprintf(NetTrace, " NAME \"");
+ while (i < length)
+ putc(pointer[i++], NetTrace);
+ putc('"', NetTrace);
+ break;
+
+ default:
+ for (i = 2; i < length; i++)
+ fprintf(NetTrace, " ?%d?", pointer[i]);
+ break;
+ }
+ break;
+#endif
+
+#if defined(ENCRYPTION)
+ case TELOPT_ENCRYPT:
+ fprintf(NetTrace, "ENCRYPT");
+ if (length < 2) {
+ fprintf(NetTrace, " (empty suboption???)");
+ break;
+ }
+ switch (pointer[1]) {
+ case ENCRYPT_START:
+ fprintf(NetTrace, " START");
+ break;
+
+ case ENCRYPT_END:
+ fprintf(NetTrace, " END");
+ break;
+
+ case ENCRYPT_REQSTART:
+ fprintf(NetTrace, " REQUEST-START");
+ break;
+
+ case ENCRYPT_REQEND:
+ fprintf(NetTrace, " REQUEST-END");
+ break;
+
+ case ENCRYPT_IS:
+ case ENCRYPT_REPLY:
+ fprintf(NetTrace, " %s ", (pointer[1] == ENCRYPT_IS) ?
+ "IS" : "REPLY");
+ if (length < 3) {
+ fprintf(NetTrace, " (partial suboption???)");
+ break;
+ }
+ if (ENCTYPE_NAME_OK(pointer[2]))
+ fprintf(NetTrace, "%s ", ENCTYPE_NAME(pointer[2]));
+ else
+ fprintf(NetTrace, " %d (unknown)", pointer[2]);
+
+ encrypt_printsub(&pointer[1], length - 1, buf, sizeof(buf));
+ fprintf(NetTrace, "%s", buf);
+ break;
+
+ case ENCRYPT_SUPPORT:
+ i = 2;
+ fprintf(NetTrace, " SUPPORT ");
+ while (i < length) {
+ if (ENCTYPE_NAME_OK(pointer[i]))
+ fprintf(NetTrace, "%s ", ENCTYPE_NAME(pointer[i]));
+ else
+ fprintf(NetTrace, "%d ", pointer[i]);
+ i++;
+ }
+ break;
+
+ case ENCRYPT_ENC_KEYID:
+ fprintf(NetTrace, " ENC_KEYID ");
+ goto encommon;
+
+ case ENCRYPT_DEC_KEYID:
+ fprintf(NetTrace, " DEC_KEYID ");
+ goto encommon;
+
+ default:
+ fprintf(NetTrace, " %d (unknown)", pointer[1]);
+ encommon:
+ for (i = 2; i < length; i++)
+ fprintf(NetTrace, " %d", pointer[i]);
+ break;
+ }
+ break;
+#endif
+
+ case TELOPT_LINEMODE:
+ fprintf(NetTrace, "LINEMODE ");
+ if (length < 2) {
+ fprintf(NetTrace, " (empty suboption???)");
+ break;
+ }
+ switch (pointer[1]) {
+ case WILL:
+ fprintf(NetTrace, "WILL ");
+ goto common;
+ case WONT:
+ fprintf(NetTrace, "WONT ");
+ goto common;
+ case DO:
+ fprintf(NetTrace, "DO ");
+ goto common;
+ case DONT:
+ fprintf(NetTrace, "DONT ");
+ common:
+ if (length < 3) {
+ fprintf(NetTrace, "(no option???)");
+ break;
+ }
+ switch (pointer[2]) {
+ case LM_FORWARDMASK:
+ fprintf(NetTrace, "Forward Mask");
+ for (i = 3; i < length; i++)
+ fprintf(NetTrace, " %x", pointer[i]);
+ break;
+ default:
+ fprintf(NetTrace, "%d (unknown)", pointer[2]);
+ for (i = 3; i < length; i++)
+ fprintf(NetTrace, " %d", pointer[i]);
+ break;
+ }
+ break;
+
+ case LM_SLC:
+ fprintf(NetTrace, "SLC");
+ for (i = 2; i < length - 2; i += 3) {
+ if (SLC_NAME_OK(pointer[i+SLC_FUNC]))
+ fprintf(NetTrace, " %s", SLC_NAME(pointer[i+SLC_FUNC]));
+ else
+ fprintf(NetTrace, " %d", pointer[i+SLC_FUNC]);
+ switch (pointer[i+SLC_FLAGS]&SLC_LEVELBITS) {
+ case SLC_NOSUPPORT:
+ fprintf(NetTrace, " NOSUPPORT"); break;
+ case SLC_CANTCHANGE:
+ fprintf(NetTrace, " CANTCHANGE"); break;
+ case SLC_VARIABLE:
+ fprintf(NetTrace, " VARIABLE"); break;
+ case SLC_DEFAULT:
+ fprintf(NetTrace, " DEFAULT"); break;
+ }
+ fprintf(NetTrace, "%s%s%s",
+ pointer[i+SLC_FLAGS]&SLC_ACK ? "|ACK" : "",
+ pointer[i+SLC_FLAGS]&SLC_FLUSHIN ? "|FLUSHIN" : "",
+ pointer[i+SLC_FLAGS]&SLC_FLUSHOUT ? "|FLUSHOUT" : "");
+ if (pointer[i+SLC_FLAGS]& ~(SLC_ACK|SLC_FLUSHIN|
+ SLC_FLUSHOUT| SLC_LEVELBITS))
+ fprintf(NetTrace, "(0x%x)", pointer[i+SLC_FLAGS]);
+ fprintf(NetTrace, " %d;", pointer[i+SLC_VALUE]);
+ if ((pointer[i+SLC_VALUE] == IAC) &&
+ (pointer[i+SLC_VALUE+1] == IAC))
+ i++;
+ }
+ for (; i < length; i++)
+ fprintf(NetTrace, " ?%d?", pointer[i]);
+ break;
+
+ case LM_MODE:
+ fprintf(NetTrace, "MODE ");
+ if (length < 3) {
+ fprintf(NetTrace, "(no mode???)");
+ break;
+ }
+ {
+ char tbuf[64];
+ sprintf(tbuf, "%s%s%s%s%s",
+ pointer[2]&MODE_EDIT ? "|EDIT" : "",
+ pointer[2]&MODE_TRAPSIG ? "|TRAPSIG" : "",
+ pointer[2]&MODE_SOFT_TAB ? "|SOFT_TAB" : "",
+ pointer[2]&MODE_LIT_ECHO ? "|LIT_ECHO" : "",
+ pointer[2]&MODE_ACK ? "|ACK" : "");
+ fprintf(NetTrace, "%s", tbuf[1] ? &tbuf[1] : "0");
+ }
+ if (pointer[2]&~(MODE_MASK))
+ fprintf(NetTrace, " (0x%x)", pointer[2]);
+ for (i = 3; i < length; i++)
+ fprintf(NetTrace, " ?0x%x?", pointer[i]);
+ break;
+ default:
+ fprintf(NetTrace, "%d (unknown)", pointer[1]);
+ for (i = 2; i < length; i++)
+ fprintf(NetTrace, " %d", pointer[i]);
+ }
+ break;
+
+ case TELOPT_STATUS: {
+ register char *cp;
+ register int j, k;
+
+ fprintf(NetTrace, "STATUS");
+
+ switch (pointer[1]) {
+ default:
+ if (pointer[1] == TELQUAL_SEND)
+ fprintf(NetTrace, " SEND");
+ else
+ fprintf(NetTrace, " %d (unknown)", pointer[1]);
+ for (i = 2; i < length; i++)
+ fprintf(NetTrace, " ?%d?", pointer[i]);
+ break;
+ case TELQUAL_IS:
+ if (--want_status_response < 0)
+ want_status_response = 0;
+ if (NetTrace == stdout)
+ fprintf(NetTrace, " IS\r\n");
+ else
+ fprintf(NetTrace, " IS\n");
+
+ for (i = 2; i < length; i++) {
+ switch(pointer[i]) {
+ case DO: cp = "DO"; goto common2;
+ case DONT: cp = "DONT"; goto common2;
+ case WILL: cp = "WILL"; goto common2;
+ case WONT: cp = "WONT"; goto common2;
+ common2:
+ i++;
+ if (TELOPT_OK((int)pointer[i]))
+ fprintf(NetTrace, " %s %s", cp, TELOPT(pointer[i]));
+ else
+ fprintf(NetTrace, " %s %d", cp, pointer[i]);
+
+ if (NetTrace == stdout)
+ fprintf(NetTrace, "\r\n");
+ else
+ fprintf(NetTrace, "\n");
+ break;
+
+ case SB:
+ fprintf(NetTrace, " SB ");
+ i++;
+ j = k = i;
+ while (j < length) {
+ if (pointer[j] == SE) {
+ if (j+1 == length)
+ break;
+ if (pointer[j+1] == SE)
+ j++;
+ else
+ break;
+ }
+ pointer[k++] = pointer[j++];
+ }
+ printsub(0, &pointer[i], k - i);
+ if (i < length) {
+ fprintf(NetTrace, " SE");
+ i = j;
+ } else
+ i = j - 1;
+
+ if (NetTrace == stdout)
+ fprintf(NetTrace, "\r\n");
+ else
+ fprintf(NetTrace, "\n");
+
+ break;
+
+ default:
+ fprintf(NetTrace, " %d", pointer[i]);
+ break;
+ }
+ }
+ break;
+ }
+ break;
+ }
+
+ case TELOPT_XDISPLOC:
+ fprintf(NetTrace, "X-DISPLAY-LOCATION ");
+ switch (pointer[1]) {
+ case TELQUAL_IS:
+ fprintf(NetTrace, "IS \"%.*s\"", length-2, (char *)pointer+2);
+ break;
+ case TELQUAL_SEND:
+ fprintf(NetTrace, "SEND");
+ break;
+ default:
+ fprintf(NetTrace, "- unknown qualifier %d (0x%x).",
+ pointer[1], pointer[1]);
+ }
+ break;
+
+ case TELOPT_ENVIRON:
+ fprintf(NetTrace, "ENVIRON ");
+ switch (pointer[1]) {
+ case TELQUAL_IS:
+ fprintf(NetTrace, "IS ");
+ goto env_common;
+ case TELQUAL_SEND:
+ fprintf(NetTrace, "SEND ");
+ goto env_common;
+ case TELQUAL_INFO:
+ fprintf(NetTrace, "INFO ");
+ env_common:
+ {
+ register int noquote = 2;
+ for (i = 2; i < length; i++ ) {
+ switch (pointer[i]) {
+ case ENV_VAR:
+ if (pointer[1] == TELQUAL_SEND)
+ goto def_case;
+ fprintf(NetTrace, "\" VAR " + noquote);
+ noquote = 2;
+ break;
+
+ case ENV_VALUE:
+ fprintf(NetTrace, "\" VALUE " + noquote);
+ noquote = 2;
+ break;
+
+ case ENV_ESC:
+ fprintf(NetTrace, "\" ESC " + noquote);
+ noquote = 2;
+ break;
+
+ case ENV_USERVAR:
+ if (pointer[1] == TELQUAL_SEND)
+ goto def_case;
+ fprintf(NetTrace, "\" USERVAR " + noquote);
+ noquote = 2;
+ break;
+
+ default:
+ def_case:
+ if (isprint(pointer[i]) && pointer[i] != '"') {
+ if (noquote) {
+ putc('"', NetTrace);
+ noquote = 0;
+ }
+ putc(pointer[i], NetTrace);
+ } else {
+ fprintf(NetTrace, "\" %03o " + noquote,
+ pointer[i]);
+ noquote = 2;
+ }
+ break;
+ }
+ }
+ if (!noquote)
+ putc('"', NetTrace);
+ break;
+ }
+ }
+ break;
+
+ default:
+ if (TELOPT_OK(pointer[0]))
+ fprintf(NetTrace, "%s (unknown)", TELOPT(pointer[0]));
+ else
+ fprintf(NetTrace, "%d (unknown)", pointer[0]);
+ for (i = 1; i < length; i++)
+ fprintf(NetTrace, " %d", pointer[i]);
+ break;
+ }
+ if (direction) {
+ if (NetTrace == stdout)
+ fprintf(NetTrace, "\r\n");
+ else
+ fprintf(NetTrace, "\n");
+ }
+ }
+}
+
+/* EmptyTerminal - called to make sure that the terminal buffer is empty.
+ * Note that we consider the buffer to run all the
+ * way to the kernel (thus the select).
+ */
+
+ void
+EmptyTerminal()
+{
+#if defined(unix)
+ fd_set o;
+
+ FD_ZERO(&o);
+#endif /* defined(unix) */
+
+ if (TTYBYTES() == 0) {
+#if defined(unix)
+ FD_SET(tout, &o);
+ (void) select(tout+1, (fd_set *) 0, &o, (fd_set *) 0,
+ (struct timeval *) 0); /* wait for TTLOWAT */
+#endif /* defined(unix) */
+ } else {
+ while (TTYBYTES()) {
+ (void) ttyflush(0);
+#if defined(unix)
+ FD_SET(tout, &o);
+ (void) select(tout+1, (fd_set *) 0, &o, (fd_set *) 0,
+ (struct timeval *) 0); /* wait for TTLOWAT */
+#endif /* defined(unix) */
+ }
+ }
+}
+
+ void
+SetForExit()
+{
+ setconnmode(0);
+#if defined(TN3270)
+ if (In3270) {
+ Finish3270();
+ }
+#else /* defined(TN3270) */
+ do {
+ (void)telrcv(); /* Process any incoming data */
+ EmptyTerminal();
+ } while (ring_full_count(&netiring)); /* While there is any */
+#endif /* defined(TN3270) */
+ setcommandmode();
+ fflush(stdout);
+ fflush(stderr);
+#if defined(TN3270)
+ if (In3270) {
+ StopScreen(1);
+ }
+#endif /* defined(TN3270) */
+ setconnmode(0);
+ EmptyTerminal(); /* Flush the path to the tty */
+ setcommandmode();
+}
+
+ void
+Exit(returnCode)
+ int returnCode;
+{
+ SetForExit();
+ exit(returnCode);
+}
+
+ void
+ExitString(string, returnCode)
+ char *string;
+ int returnCode;
+{
+ SetForExit();
+ fwrite(string, 1, strlen(string), stderr);
+ exit(returnCode);
+}
--- /dev/null
+#
+# Copyright (c) 1990 The Regents of the University of California.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms are permitted provided
+# that: (1) source distributions retain this entire copyright notice and
+# comment, and (2) distributions including binaries display the following
+# acknowledgement: ``This product includes software developed by the
+# University of California, Berkeley and its contributors'' in the
+# documentation or other materials provided with the distribution and in
+# all advertising materials mentioning features or use of this software.
+# Neither the name of the University nor the names of its contributors may
+# be used to endorse or promote products derived from this software without
+# specific prior written permission.
+# THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
+# WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
+# MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+#
+# @(#)Makefile 5.15 (Berkeley) 3/5/91
+#
+
+PROG= telnetd
+CFLAGS+=-DLINEMODE -DKLUDGELINEMODE -DUSE_TERMIO -DDIAGNOSTICS
+CFLAGS+=-DAUTHENTICATION -DENCRYPTION -I${.CURDIR}/../../lib
+SRCS= authenc.c global.c slc.c state.c sys_term.c telnetd.c \
+ termstat.c utility.c
+DPADD= ${LIBUTIL} ${LIBTERM}
+LDADD= -lutil -ltermcap -ltelnet
+LDADD+= -lkrb -ldes
+MAN8= telnetd.0
+
+.include <bsd.prog.mk>
--- /dev/null
+#
+# Copyright (c) 1991 The Regents of the University of California.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms are permitted provided
+# that: (1) source distributions retain this entire copyright notice and
+# comment, and (2) distributions including binaries display the following
+# acknowledgement: ``This product includes software developed by the
+# University of California, Berkeley and its contributors'' in the
+# documentation or other materials provided with the distribution and in
+# all advertising materials mentioning features or use of this software.
+# Neither the name of the University nor the names of its contributors may
+# be used to endorse or promote products derived from this software without
+# specific prior written permission.
+# THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
+# WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
+# MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+#
+# @(#)Makefile.generic 5.5 (Berkeley) 3/1/91
+#
+
+SRC1= telnetd.c state.c termstat.c slc.c sys_term.c utility.c global.c authenc.c
+OBJ1= telnetd.o state.o termstat.o slc.o sys_term.o utility.o global.o authenc.o
+
+OBJS= ${OBJ1} ${GETTYOBJ}
+SRCS= ${SRC1} ${GETTYSRC}
+
+MAN= telnetd.0
+CFLAGS= ${LCCFLAGS} -I.. ${DEFINES}
+ARPA_TELNET = ../arpa/telnet.h
+
+#
+# These next three lines are not needed in 4.4BSD
+#
+.SUFFIXES: .0 .8
+.8.0:
+ nroff -man -h $< > $@
+
+
+all: telnetd
+
+telnetd: ${OBJS} ${LIBPATH}
+ ${CC} -o $@ ${CFLAGS} ${OBJS} ${LIBS}
+
+clean:
+ rm -f ${OBJS} core telnetd
+
+cleandir: clean
+ rm -f ${MAN} tags .depend
+
+depend: ${SRCS}
+ mkdep ${CFLAGS} ${SRCS}
+
+install: ${MAN}
+ install -s -o bin -g bin -m 755 telnetd ${LIBEXEC}
+ install -c -o bin -g bin -m 444 ${MAN} ${DESTDIR}/usr/man/cat8
+
+lint: ${SRCS}
+ lint ${CFLAGS} ${SRCS}
+
+tags: ${SRCS}
+ ctags ${SRCS}
+
+authenc.o: telnetd.h
+global.o: defs.h ext.h ${ARPA_TELNET}
+slc.o: telnetd.h defs.h ext.h ${ARPA_TELNET}
+state.o: telnetd.h defs.h ext.h ${ARPA_TELNET}
+sys_term.o: telnetd.h pathnames.h defs.h ext.h ${ARPA_TELNET}
+telnetd.o: telnetd.h defs.h ext.h ${ARPA_TELNET}
+termstat.o: telnetd.h defs.h ext.h ${ARPA_TELNET}
+utility.o: telnetd.h defs.h ext.h ${ARPA_TELNET}
--- /dev/null
+#
+# Copyright (c) 1991 The Regents of the University of California.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms are permitted provided
+# that: (1) source distributions retain this entire copyright notice and
+# comment, and (2) distributions including binaries display the following
+# acknowledgement: ``This product includes software developed by the
+# University of California, Berkeley and its contributors'' in the
+# documentation or other materials provided with the distribution and in
+# all advertising materials mentioning features or use of this software.
+# Neither the name of the University nor the names of its contributors may
+# be used to endorse or promote products derived from this software without
+# specific prior written permission.
+# THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
+# WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
+# MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+#
+# @(#)Makefile 5.5 (Berkeley) 3/1/91
+#
+
+#
+# Everything happens in ../Makefile.config and Makefile.generic
+#
+
+all:
+ @-if [ -f ../Config.local ]; \
+ then \
+ echo make -f ../Config.local WHAT=${WHAT} CC="${CC}"; \
+ make -f ../Config.local WHAT=${WHAT} CC="${CC}"; \
+ else \
+ echo make -f ../Config.generic WHAT=${WHAT} CC="${CC}"; \
+ make -f ../Config.generic WHAT=${WHAT} CC="${CC}"; \
+ fi
+
+.DEFAULT:
+ @-if [ -f ../Config.local ]; \
+ then \
+ echo make -f ../Config.local WHAT=${WHAT} CC="${CC}" $@; \
+ make -f ../Config.local WHAT=${WHAT} CC="${CC}" $@; \
+ else \
+ echo make -f ../Config.generic WHAT=${WHAT} CC="${CC}" $@; \
+ make -f ../Config.generic WHAT=${WHAT} CC="${CC}" $@; \
+ fi
--- /dev/null
+/*-
+ * Copyright (c) 1991 The Regents of the University of California.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef lint
+static char sccsid[] = "@(#)authenc.c 5.2 (Berkeley) 12/18/92";
+#endif /* not lint */
+
+#if defined(ENCRYPTION) || defined(AUTHENTICATION)
+#include "telnetd.h"
+#include <libtelnet/misc.h>
+
+ int
+net_write(str, len)
+ unsigned char *str;
+ int len;
+{
+ if (nfrontp + len < netobuf + BUFSIZ) {
+ bcopy((void *)str, (void *)nfrontp, len);
+ nfrontp += len;
+ return(len);
+ }
+ return(0);
+}
+
+ void
+net_encrypt()
+{
+#if defined(ENCRYPTION)
+ char *s = (nclearto > nbackp) ? nclearto : nbackp;
+ if (s < nfrontp && encrypt_output) {
+ (*encrypt_output)((unsigned char *)s, nfrontp - s);
+ }
+ nclearto = nfrontp;
+#endif
+}
+
+ int
+telnet_spin()
+{
+ ttloop();
+ return(0);
+}
+
+ char *
+telnet_getenv(val)
+ char *val;
+{
+ extern char *getenv();
+ return(getenv(val));
+}
+
+ char *
+telnet_gets(prompt, result, length, echo)
+ char *prompt;
+ char *result;
+ int length;
+ int echo;
+{
+ return((char *)0);
+}
+#endif
--- /dev/null
+/*
+ * Copyright (c) 1989 The Regents of the University of California.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * @(#)defs.h 5.11 (Berkeley) 12/18/92
+ */
+
+/*
+ * Telnet server defines
+ */
+#include <sys/types.h>
+#include <sys/param.h>
+
+#ifndef BSD
+# define BSD 43
+#endif
+
+#if defined(CRAY) && !defined(LINEMODE)
+# define SYSV_TERMIO
+# define LINEMODE
+# define KLUDGELINEMODE
+# define DIAGNOSTICS
+# if defined(UNICOS50) && !defined(UNICOS5)
+# define UNICOS5
+# endif
+# if !defined(UNICOS5)
+# define BFTPDAEMON
+# define HAS_IP_TOS
+# endif
+#endif /* CRAY */
+#if defined(UNICOS5) && !defined(NO_SETSID)
+# define NO_SETSID
+#endif
+
+#if defined(PRINTOPTIONS) && defined(DIAGNOSTICS)
+#define TELOPTS
+#define TELCMDS
+#define SLC_NAMES
+#endif
+
+#if defined(SYSV_TERMIO) && !defined(USE_TERMIO)
+# define USE_TERMIO
+#endif
+
+#include <sys/socket.h>
+#ifndef CRAY
+#include <sys/wait.h>
+#endif /* CRAY */
+#include <fcntl.h>
+#include <sys/file.h>
+#include <sys/stat.h>
+#include <sys/time.h>
+#ifndef FILIO_H
+#include <sys/ioctl.h>
+#else
+#include <sys/filio.h>
+#endif
+
+#include <netinet/in.h>
+
+#include <arpa/telnet.h>
+
+#include <stdio.h>
+#ifdef __STDC__
+#include <stdlib.h>
+#endif
+#include <signal.h>
+#include <errno.h>
+#include <netdb.h>
+#include <syslog.h>
+#ifndef LOG_DAEMON
+#define LOG_DAEMON 0
+#endif
+#ifndef LOG_ODELAY
+#define LOG_ODELAY 0
+#endif
+#include <ctype.h>
+#ifndef NO_STRING_H
+#include <string.h>
+#else
+#include <strings.h>
+#endif
+
+#ifndef USE_TERMIO
+#include <sgtty.h>
+#else
+# ifdef SYSV_TERMIO
+# include <termio.h>
+# else
+# include <termios.h>
+# endif
+#endif
+#if !defined(USE_TERMIO) || defined(NO_CC_T)
+typedef unsigned char cc_t;
+#endif
+
+#ifdef __STDC__
+#include <unistd.h>
+#endif
+
+#ifndef _POSIX_VDISABLE
+# ifdef VDISABLE
+# define _POSIX_VDISABLE VDISABLE
+# else
+# define _POSIX_VDISABLE ((unsigned char)'\377')
+# endif
+#endif
+
+
+#ifdef CRAY
+# ifdef CRAY1
+# include <sys/pty.h>
+# ifndef FD_ZERO
+# include <sys/select.h>
+# endif /* FD_ZERO */
+# endif /* CRAY1 */
+
+#include <memory.h>
+#endif /* CRAY */
+
+#if !defined(TIOCSCTTY) && defined(TCSETCTTY)
+# define TIOCSCTTY TCSETCTTY
+#endif
+
+#ifndef FD_SET
+#ifndef HAVE_fd_set
+typedef struct fd_set { int fds_bits[1]; } fd_set;
+#endif
+
+#define FD_SET(n, p) ((p)->fds_bits[0] |= (1<<(n)))
+#define FD_CLR(n, p) ((p)->fds_bits[0] &= ~(1<<(n)))
+#define FD_ISSET(n, p) ((p)->fds_bits[0] & (1<<(n)))
+#define FD_ZERO(p) ((p)->fds_bits[0] = 0)
+#endif /* FD_SET */
+
+/*
+ * I/O data buffers defines
+ */
+#define NETSLOP 64
+#ifdef CRAY
+#undef BUFSIZ
+#define BUFSIZ 2048
+#endif
+
+#define NIACCUM(c) { *netip++ = c; \
+ ncc++; \
+ }
+
+/* clock manipulations */
+#define settimer(x) (clocks.x = ++clocks.system)
+#define sequenceIs(x,y) (clocks.x < clocks.y)
+
+/*
+ * Linemode support states, in decreasing order of importance
+ */
+#define REAL_LINEMODE 0x04
+#define KLUDGE_OK 0x03
+#define NO_AUTOKLUDGE 0x02
+#define KLUDGE_LINEMODE 0x01
+#define NO_LINEMODE 0x00
+
+/*
+ * Structures of information for each special character function.
+ */
+typedef struct {
+ unsigned char flag; /* the flags for this function */
+ cc_t val; /* the value of the special character */
+} slcent, *Slcent;
+
+typedef struct {
+ slcent defset; /* the default settings */
+ slcent current; /* the current settings */
+ cc_t *sptr; /* a pointer to the char in */
+ /* system data structures */
+} slcfun, *Slcfun;
+
+#ifdef DIAGNOSTICS
+/*
+ * Diagnostics capabilities
+ */
+#define TD_REPORT 0x01 /* Report operations to client */
+#define TD_EXERCISE 0x02 /* Exercise client's implementation */
+#define TD_NETDATA 0x04 /* Display received data stream */
+#define TD_PTYDATA 0x08 /* Display data passed to pty */
+#define TD_OPTIONS 0x10 /* Report just telnet options */
+#endif /* DIAGNOSTICS */
+
+/*
+ * We keep track of each side of the option negotiation.
+ */
+
+#define MY_STATE_WILL 0x01
+#define MY_WANT_STATE_WILL 0x02
+#define MY_STATE_DO 0x04
+#define MY_WANT_STATE_DO 0x08
+
+/*
+ * Macros to check the current state of things
+ */
+
+#define my_state_is_do(opt) (options[opt]&MY_STATE_DO)
+#define my_state_is_will(opt) (options[opt]&MY_STATE_WILL)
+#define my_want_state_is_do(opt) (options[opt]&MY_WANT_STATE_DO)
+#define my_want_state_is_will(opt) (options[opt]&MY_WANT_STATE_WILL)
+
+#define my_state_is_dont(opt) (!my_state_is_do(opt))
+#define my_state_is_wont(opt) (!my_state_is_will(opt))
+#define my_want_state_is_dont(opt) (!my_want_state_is_do(opt))
+#define my_want_state_is_wont(opt) (!my_want_state_is_will(opt))
+
+#define set_my_state_do(opt) (options[opt] |= MY_STATE_DO)
+#define set_my_state_will(opt) (options[opt] |= MY_STATE_WILL)
+#define set_my_want_state_do(opt) (options[opt] |= MY_WANT_STATE_DO)
+#define set_my_want_state_will(opt) (options[opt] |= MY_WANT_STATE_WILL)
+
+#define set_my_state_dont(opt) (options[opt] &= ~MY_STATE_DO)
+#define set_my_state_wont(opt) (options[opt] &= ~MY_STATE_WILL)
+#define set_my_want_state_dont(opt) (options[opt] &= ~MY_WANT_STATE_DO)
+#define set_my_want_state_wont(opt) (options[opt] &= ~MY_WANT_STATE_WILL)
+
+/*
+ * Tricky code here. What we want to know is if the MY_STATE_WILL
+ * and MY_WANT_STATE_WILL bits have the same value. Since the two
+ * bits are adjacent, a little arithmatic will show that by adding
+ * in the lower bit, the upper bit will be set if the two bits were
+ * different, and clear if they were the same.
+ */
+#define my_will_wont_is_changing(opt) \
+ ((options[opt]+MY_STATE_WILL) & MY_WANT_STATE_WILL)
+
+#define my_do_dont_is_changing(opt) \
+ ((options[opt]+MY_STATE_DO) & MY_WANT_STATE_DO)
+
+/*
+ * Make everything symetrical
+ */
+
+#define HIS_STATE_WILL MY_STATE_DO
+#define HIS_WANT_STATE_WILL MY_WANT_STATE_DO
+#define HIS_STATE_DO MY_STATE_WILL
+#define HIS_WANT_STATE_DO MY_WANT_STATE_WILL
+
+#define his_state_is_do my_state_is_will
+#define his_state_is_will my_state_is_do
+#define his_want_state_is_do my_want_state_is_will
+#define his_want_state_is_will my_want_state_is_do
+
+#define his_state_is_dont my_state_is_wont
+#define his_state_is_wont my_state_is_dont
+#define his_want_state_is_dont my_want_state_is_wont
+#define his_want_state_is_wont my_want_state_is_dont
+
+#define set_his_state_do set_my_state_will
+#define set_his_state_will set_my_state_do
+#define set_his_want_state_do set_my_want_state_will
+#define set_his_want_state_will set_my_want_state_do
+
+#define set_his_state_dont set_my_state_wont
+#define set_his_state_wont set_my_state_dont
+#define set_his_want_state_dont set_my_want_state_wont
+#define set_his_want_state_wont set_my_want_state_dont
+
+#define his_will_wont_is_changing my_do_dont_is_changing
+#define his_do_dont_is_changing my_will_wont_is_changing
--- /dev/null
+/*
+ * Copyright (c) 1989 The Regents of the University of California.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * @(#)ext.h 5.8 (Berkeley) 12/18/92
+ */
+
+/*
+ * Telnet server variable declarations
+ */
+extern char options[256];
+extern char do_dont_resp[256];
+extern char will_wont_resp[256];
+extern int linemode; /* linemode on/off */
+#ifdef LINEMODE
+extern int uselinemode; /* what linemode to use (on/off) */
+extern int editmode; /* edit modes in use */
+extern int useeditmode; /* edit modes to use */
+extern int alwayslinemode; /* command line option */
+# ifdef KLUDGELINEMODE
+extern int lmodetype; /* Client support for linemode */
+# endif /* KLUDGELINEMODE */
+#endif /* LINEMODE */
+extern int flowmode; /* current flow control state */
+extern int restartany; /* restart output on any character state */
+#ifdef DIAGNOSTICS
+extern int diagnostic; /* telnet diagnostic capabilities */
+#endif /* DIAGNOSTICS */
+#ifdef BFTPDAEMON
+extern int bftpd; /* behave as bftp daemon */
+#endif /* BFTPDAEMON */
+#if defined(SecurID)
+extern int require_SecurID;
+#endif
+#if defined(AUTHENTICATION)
+extern int auth_level;
+#endif
+
+extern slcfun slctab[NSLC + 1]; /* slc mapping table */
+
+char *terminaltype;
+
+/*
+ * I/O data buffers, pointers, and counters.
+ */
+extern char ptyobuf[BUFSIZ+NETSLOP], *pfrontp, *pbackp;
+
+extern char netibuf[BUFSIZ], *netip;
+
+extern char netobuf[BUFSIZ+NETSLOP], *nfrontp, *nbackp;
+extern char *neturg; /* one past last bye of urgent data */
+
+extern int pcc, ncc;
+
+#if defined(CRAY2) && defined(UNICOS5)
+extern int unpcc; /* characters left unprocessed by CRAY-2 terminal routine */
+extern char *unptyip; /* pointer to remaining characters in buffer */
+#endif
+
+extern int pty, net;
+extern char *line;
+extern int SYNCHing; /* we are in TELNET SYNCH mode */
+
+#ifndef P
+# ifdef __STDC__
+# define P(x) x
+# else
+# define P(x) ()
+# endif
+#endif
+
+extern void
+ _termstat P((void)),
+ add_slc P((int, int, int)),
+ check_slc P((void)),
+ change_slc P((int, int, int)),
+ cleanup P((int)),
+ clientstat P((int, int, int)),
+ copy_termbuf P((char *, int)),
+ deferslc P((void)),
+ defer_terminit P((void)),
+ do_opt_slc P((unsigned char *, int)),
+ doeof P((void)),
+ dooption P((int)),
+ dontoption P((int)),
+ edithost P((char *, char *)),
+ fatal P((int, char *)),
+ fatalperror P((int, char *)),
+ get_slc_defaults P((void)),
+ init_env P((void)),
+ init_termbuf P((void)),
+ interrupt P((void)),
+ localstat P((void)),
+ netclear P((void)),
+ netflush P((void)),
+#ifdef DIAGNOSTICS
+ printoption P((char *, int)),
+ printdata P((char *, char *, int)),
+ printsub P((int, unsigned char *, int)),
+#endif
+ ptyflush P((void)),
+ putchr P((int)),
+ putf P((char *, char *)),
+ recv_ayt P((void)),
+ send_do P((int, int)),
+ send_dont P((int, int)),
+ send_slc P((void)),
+ send_status P((void)),
+ send_will P((int, int)),
+ send_wont P((int, int)),
+ sendbrk P((void)),
+ sendsusp P((void)),
+ set_termbuf P((void)),
+ start_login P((char *, int, char *)),
+ start_slc P((int)),
+#if defined(AUTHENTICATION)
+ start_slave P((char *)),
+#else
+ start_slave P((char *, int, char *)),
+#endif
+ suboption P((void)),
+ telrcv P((void)),
+ ttloop P((void)),
+ tty_binaryin P((int)),
+ tty_binaryout P((int));
+
+extern int
+ end_slc P((unsigned char **)),
+ getnpty P((void)),
+ getpty P((void)),
+ login_tty P((int)),
+ spcset P((int, cc_t *, cc_t **)),
+ stilloob P((int)),
+ terminit P((void)),
+ termstat P((void)),
+ tty_flowmode P((void)),
+ tty_restartany P((void)),
+ tty_isbinaryin P((void)),
+ tty_isbinaryout P((void)),
+ tty_iscrnl P((void)),
+ tty_isecho P((void)),
+ tty_isediting P((void)),
+ tty_islitecho P((void)),
+ tty_isnewmap P((void)),
+ tty_israw P((void)),
+ tty_issofttab P((void)),
+ tty_istrapsig P((void)),
+ tty_linemode P((void));
+
+extern void
+ tty_rspeed P((int)),
+ tty_setecho P((int)),
+ tty_setedit P((int)),
+ tty_setlinemode P((int)),
+ tty_setlitecho P((int)),
+ tty_setsig P((int)),
+ tty_setsofttab P((int)),
+ tty_tspeed P((int)),
+ willoption P((int)),
+ wontoption P((int)),
+ writenet P((unsigned char *, int));
+
+#if defined(ENCRYPTION)
+extern void (*encrypt_output) P((unsigned char *, int));
+extern int (*decrypt_input) P((int));
+extern char *nclearto;
+#endif
+
+
+/*
+ * The following are some clocks used to decide how to interpret
+ * the relationship between various variables.
+ */
+
+extern struct {
+ int
+ system, /* what the current time is */
+ echotoggle, /* last time user entered echo character */
+ modenegotiated, /* last time operating mode negotiated */
+ didnetreceive, /* last time we read data from network */
+ ttypesubopt, /* ttype subopt is received */
+ tspeedsubopt, /* tspeed subopt is received */
+ environsubopt, /* environ subopt is received */
+ xdisplocsubopt, /* xdisploc subopt is received */
+ baseline, /* time started to do timed action */
+ gotDM; /* when did we last see a data mark */
+} clocks;
+
+
+#if defined(CRAY2) && defined(UNICOS5)
+extern int needtermstat;
+#endif
+
+#ifndef DEFAULT_IM
+# ifdef CRAY
+# define DEFAULT_IM "\r\n\r\nCray UNICOS (%h) (%t)\r\n\r\r\n\r"
+# else
+# ifdef sun
+# define DEFAULT_IM "\r\n\r\nSunOS UNIX (%h) (%t)\r\n\r\r\n\r"
+# else
+# ifdef ultrix
+# define DEFAULT_IM "\r\n\r\nULTRIX (%h) (%t)\r\n\r\r\n\r"
+# else
+# define DEFAULT_IM "\r\n\r\n4.4 BSD UNIX (%h) (%t)\r\n\r\r\n\r"
+# endif
+# endif
+# endif
+#endif
--- /dev/null
+/*
+ * Copyright (c) 1989 Regents of the University of California.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef lint
+static char sccsid[] = "@(#)global.c 5.2 (Berkeley) 6/1/90";
+#endif /* not lint */
+
+/*
+ * Allocate global variables. We do this
+ * by including the header file that defines
+ * them all as externs, but first we define
+ * the keyword "extern" to be nothing, so that
+ * we will actually allocate the space.
+ */
+
+#include "defs.h"
+#define extern
+#include "ext.h"
--- /dev/null
+/*
+ * Copyright (c) 1989 The Regents of the University of California.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * @(#)pathnames.h 5.5 (Berkeley) 6/28/90
+ */
+
+#if BSD > 43
+
+# include <paths.h>
+
+# define _PATH_LOGIN "/usr/bin/login"
+
+#else
+
+# define _PATH_TTY "/dev/tty"
+# define _PATH_LOGIN "/nfs/kerberos/bin/sbin/sun3/login.krb5"
+
+#endif
+
+#ifdef BFTPDAEMON
+#define BFTPPATH "/usr/ucb/bftp"
+#endif /* BFTPDAEMON */
--- /dev/null
+/*
+ * Copyright (c) 1989 Regents of the University of California.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef lint
+static char sccsid[] = "@(#)slc.c 5.8 (Berkeley) 12/18/92";
+#endif /* not lint */
+
+#include "telnetd.h"
+
+#ifdef LINEMODE
+/*
+ * local varibles
+ */
+static unsigned char *def_slcbuf = (unsigned char *)0;
+static int def_slclen = 0;
+static int slcchange; /* change to slc is requested */
+static unsigned char *slcptr; /* pointer into slc buffer */
+static unsigned char slcbuf[NSLC*6]; /* buffer for slc negotiation */
+
+/*
+ * send_slc
+ *
+ * Write out the current special characters to the client.
+ */
+ void
+send_slc()
+{
+ register int i;
+
+ /*
+ * Send out list of triplets of special characters
+ * to client. We only send info on the characters
+ * that are currently supported.
+ */
+ for (i = 1; i <= NSLC; i++) {
+ if ((slctab[i].defset.flag & SLC_LEVELBITS) == SLC_NOSUPPORT)
+ continue;
+ add_slc((unsigned char)i, slctab[i].current.flag,
+ slctab[i].current.val);
+ }
+
+} /* end of send_slc */
+
+/*
+ * default_slc
+ *
+ * Set pty special characters to all the defaults.
+ */
+ void
+default_slc()
+{
+ register int i;
+
+ for (i = 1; i <= NSLC; i++) {
+ slctab[i].current.val = slctab[i].defset.val;
+ if (slctab[i].current.val == (cc_t)(_POSIX_VDISABLE))
+ slctab[i].current.flag = SLC_NOSUPPORT;
+ else
+ slctab[i].current.flag = slctab[i].defset.flag;
+ if (slctab[i].sptr) {
+ *(slctab[i].sptr) = slctab[i].defset.val;
+ }
+ }
+ slcchange = 1;
+
+} /* end of default_slc */
+#endif /* LINEMODE */
+
+/*
+ * get_slc_defaults
+ *
+ * Initialize the slc mapping table.
+ */
+ void
+get_slc_defaults()
+{
+ register int i;
+
+ init_termbuf();
+
+ for (i = 1; i <= NSLC; i++) {
+ slctab[i].defset.flag =
+ spcset(i, &slctab[i].defset.val, &slctab[i].sptr);
+ slctab[i].current.flag = SLC_NOSUPPORT;
+ slctab[i].current.val = 0;
+ }
+
+} /* end of get_slc_defaults */
+
+#ifdef LINEMODE
+/*
+ * add_slc
+ *
+ * Add an slc triplet to the slc buffer.
+ */
+ void
+add_slc(func, flag, val)
+ register char func, flag;
+ register cc_t val;
+{
+
+ if ((*slcptr++ = (unsigned char)func) == 0xff)
+ *slcptr++ = 0xff;
+
+ if ((*slcptr++ = (unsigned char)flag) == 0xff)
+ *slcptr++ = 0xff;
+
+ if ((*slcptr++ = (unsigned char)val) == 0xff)
+ *slcptr++ = 0xff;
+
+} /* end of add_slc */
+
+/*
+ * start_slc
+ *
+ * Get ready to process incoming slc's and respond to them.
+ *
+ * The parameter getit is non-zero if it is necessary to grab a copy
+ * of the terminal control structures.
+ */
+ void
+start_slc(getit)
+ register int getit;
+{
+
+ slcchange = 0;
+ if (getit)
+ init_termbuf();
+ (void) sprintf((char *)slcbuf, "%c%c%c%c",
+ IAC, SB, TELOPT_LINEMODE, LM_SLC);
+ slcptr = slcbuf + 4;
+
+} /* end of start_slc */
+
+/*
+ * end_slc
+ *
+ * Finish up the slc negotiation. If something to send, then send it.
+ */
+ int
+end_slc(bufp)
+ register unsigned char **bufp;
+{
+ register int len;
+ void netflush();
+
+ /*
+ * If a change has occured, store the new terminal control
+ * structures back to the terminal driver.
+ */
+ if (slcchange) {
+ set_termbuf();
+ }
+
+ /*
+ * If the pty state has not yet been fully processed and there is a
+ * deferred slc request from the client, then do not send any
+ * sort of slc negotiation now. We will respond to the client's
+ * request very soon.
+ */
+ if (def_slcbuf && (terminit() == 0)) {
+ return(0);
+ }
+
+ if (slcptr > (slcbuf + 4)) {
+ if (bufp) {
+ *bufp = &slcbuf[4];
+ return(slcptr - slcbuf - 4);
+ } else {
+ (void) sprintf((char *)slcptr, "%c%c", IAC, SE);
+ slcptr += 2;
+ len = slcptr - slcbuf;
+ writenet(slcbuf, len);
+ netflush(); /* force it out immediately */
+ DIAG(TD_OPTIONS, printsub('>', slcbuf+2, len-2););
+ }
+ }
+ return (0);
+
+} /* end of end_slc */
+
+/*
+ * process_slc
+ *
+ * Figure out what to do about the client's slc
+ */
+ void
+process_slc(func, flag, val)
+ register unsigned char func, flag;
+ register cc_t val;
+{
+ register int hislevel, mylevel, ack;
+
+ /*
+ * Ensure that we know something about this function
+ */
+ if (func > NSLC) {
+ add_slc(func, SLC_NOSUPPORT, 0);
+ return;
+ }
+
+ /*
+ * Process the special case requests of 0 SLC_DEFAULT 0
+ * and 0 SLC_VARIABLE 0. Be a little forgiving here, don't
+ * worry about whether the value is actually 0 or not.
+ */
+ if (func == 0) {
+ if ((flag = flag & SLC_LEVELBITS) == SLC_DEFAULT) {
+ default_slc();
+ send_slc();
+ } else if (flag == SLC_VARIABLE) {
+ send_slc();
+ }
+ return;
+ }
+
+ /*
+ * Appears to be a function that we know something about. So
+ * get on with it and see what we know.
+ */
+
+ hislevel = flag & SLC_LEVELBITS;
+ mylevel = slctab[func].current.flag & SLC_LEVELBITS;
+ ack = flag & SLC_ACK;
+ /*
+ * ignore the command if:
+ * the function value and level are the same as what we already have;
+ * or the level is the same and the ack bit is set
+ */
+ if (hislevel == mylevel && (val == slctab[func].current.val || ack)) {
+ return;
+ } else if (ack) {
+ /*
+ * If we get here, we got an ack, but the levels don't match.
+ * This shouldn't happen. If it does, it is probably because
+ * we have sent two requests to set a variable without getting
+ * a response between them, and this is the first response.
+ * So, ignore it, and wait for the next response.
+ */
+ return;
+ } else {
+ change_slc(func, flag, val);
+ }
+
+} /* end of process_slc */
+
+/*
+ * change_slc
+ *
+ * Process a request to change one of our special characters.
+ * Compare client's request with what we are capable of supporting.
+ */
+ void
+change_slc(func, flag, val)
+ register char func, flag;
+ register cc_t val;
+{
+ register int hislevel, mylevel;
+
+ hislevel = flag & SLC_LEVELBITS;
+ mylevel = slctab[func].defset.flag & SLC_LEVELBITS;
+ /*
+ * If client is setting a function to NOSUPPORT
+ * or DEFAULT, then we can easily and directly
+ * accomodate the request.
+ */
+ if (hislevel == SLC_NOSUPPORT) {
+ slctab[func].current.flag = flag;
+ slctab[func].current.val = (cc_t)_POSIX_VDISABLE;
+ flag |= SLC_ACK;
+ add_slc(func, flag, val);
+ return;
+ }
+ if (hislevel == SLC_DEFAULT) {
+ /*
+ * Special case here. If client tells us to use
+ * the default on a function we don't support, then
+ * return NOSUPPORT instead of what we may have as a
+ * default level of DEFAULT.
+ */
+ if (mylevel == SLC_DEFAULT) {
+ slctab[func].current.flag = SLC_NOSUPPORT;
+ } else {
+ slctab[func].current.flag = slctab[func].defset.flag;
+ }
+ slctab[func].current.val = slctab[func].defset.val;
+ add_slc(func, slctab[func].current.flag,
+ slctab[func].current.val);
+ return;
+ }
+
+ /*
+ * Client wants us to change to a new value or he
+ * is telling us that he can't change to our value.
+ * Some of the slc's we support and can change,
+ * some we do support but can't change,
+ * and others we don't support at all.
+ * If we can change it then we have a pointer to
+ * the place to put the new value, so change it,
+ * otherwise, continue the negotiation.
+ */
+ if (slctab[func].sptr) {
+ /*
+ * We can change this one.
+ */
+ slctab[func].current.val = val;
+ *(slctab[func].sptr) = val;
+ slctab[func].current.flag = flag;
+ flag |= SLC_ACK;
+ slcchange = 1;
+ add_slc(func, flag, val);
+ } else {
+ /*
+ * It is not possible for us to support this
+ * request as he asks.
+ *
+ * If our level is DEFAULT, then just ack whatever was
+ * sent.
+ *
+ * If he can't change and we can't change,
+ * then degenerate to NOSUPPORT.
+ *
+ * Otherwise we send our level back to him, (CANTCHANGE
+ * or NOSUPPORT) and if CANTCHANGE, send
+ * our value as well.
+ */
+ if (mylevel == SLC_DEFAULT) {
+ slctab[func].current.flag = flag;
+ slctab[func].current.val = val;
+ flag |= SLC_ACK;
+ } else if (hislevel == SLC_CANTCHANGE &&
+ mylevel == SLC_CANTCHANGE) {
+ flag &= ~SLC_LEVELBITS;
+ flag |= SLC_NOSUPPORT;
+ slctab[func].current.flag = flag;
+ } else {
+ flag &= ~SLC_LEVELBITS;
+ flag |= mylevel;
+ slctab[func].current.flag = flag;
+ if (mylevel == SLC_CANTCHANGE) {
+ slctab[func].current.val =
+ slctab[func].defset.val;
+ val = slctab[func].current.val;
+ }
+
+ }
+ add_slc(func, flag, val);
+ }
+
+} /* end of change_slc */
+
+#if defined(USE_TERMIO) && (VEOF == VMIN)
+cc_t oldeofc = '\004';
+#endif
+
+/*
+ * check_slc
+ *
+ * Check the special characters in use and notify the client if any have
+ * changed. Only those characters that are capable of being changed are
+ * likely to have changed. If a local change occurs, kick the support level
+ * and flags up to the defaults.
+ */
+ void
+check_slc()
+{
+ register int i;
+
+ for (i = 1; i <= NSLC; i++) {
+#if defined(USE_TERMIO) && (VEOF == VMIN)
+ /*
+ * In a perfect world this would be a neat little
+ * function. But in this world, we should not notify
+ * client of changes to the VEOF char when
+ * ICANON is off, because it is not representing
+ * a special character.
+ */
+ if (i == SLC_EOF) {
+ if (!tty_isediting())
+ continue;
+ else if (slctab[i].sptr)
+ oldeofc = *(slctab[i].sptr);
+ }
+#endif /* defined(USE_TERMIO) && defined(SYSV_TERMIO) */
+ if (slctab[i].sptr &&
+ (*(slctab[i].sptr) != slctab[i].current.val)) {
+ slctab[i].current.val = *(slctab[i].sptr);
+ if (*(slctab[i].sptr) == (cc_t)_POSIX_VDISABLE)
+ slctab[i].current.flag = SLC_NOSUPPORT;
+ else
+ slctab[i].current.flag = slctab[i].defset.flag;
+ add_slc((unsigned char)i, slctab[i].current.flag,
+ slctab[i].current.val);
+ }
+ }
+
+} /* check_slc */
+
+/*
+ * do_opt_slc
+ *
+ * Process an slc option buffer. Defer processing of incoming slc's
+ * until after the terminal state has been processed. Save the first slc
+ * request that comes along, but discard all others.
+ *
+ * ptr points to the beginning of the buffer, len is the length.
+ */
+ void
+do_opt_slc(ptr, len)
+ register unsigned char *ptr;
+ register int len;
+{
+ register unsigned char func, flag;
+ cc_t val;
+ register unsigned char *end = ptr + len;
+
+ if (terminit()) { /* go ahead */
+ while (ptr < end) {
+ func = *ptr++;
+ if (ptr >= end) break;
+ flag = *ptr++;
+ if (ptr >= end) break;
+ val = (cc_t)*ptr++;
+
+ process_slc(func, flag, val);
+
+ }
+ } else {
+ /*
+ * save this slc buffer if it is the first, otherwise dump
+ * it.
+ */
+ if (def_slcbuf == (unsigned char *)0) {
+ def_slclen = len;
+ def_slcbuf = (unsigned char *)malloc((unsigned)len);
+ if (def_slcbuf == (unsigned char *)0)
+ return; /* too bad */
+ bcopy(ptr, def_slcbuf, len);
+ }
+ }
+
+} /* end of do_opt_slc */
+
+/*
+ * deferslc
+ *
+ * Do slc stuff that was deferred.
+ */
+ void
+deferslc()
+{
+ if (def_slcbuf) {
+ start_slc(1);
+ do_opt_slc(def_slcbuf, def_slclen);
+ (void) end_slc(0);
+ free(def_slcbuf);
+ def_slcbuf = (unsigned char *)0;
+ def_slclen = 0;
+ }
+
+} /* end of deferslc */
+
+#endif /* LINEMODE */
--- /dev/null
+/*
+ * Copyright (c) 1989 Regents of the University of California.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef lint
+static char sccsid[] = "@(#)state.c 5.12 (Berkeley) 1/19/93";
+#endif /* not lint */
+
+#include "telnetd.h"
+#if defined(AUTHENTICATION)
+#include <libtelnet/auth.h>
+#endif
+
+char doopt[] = { IAC, DO, '%', 'c', 0 };
+char dont[] = { IAC, DONT, '%', 'c', 0 };
+char will[] = { IAC, WILL, '%', 'c', 0 };
+char wont[] = { IAC, WONT, '%', 'c', 0 };
+int not42 = 1;
+
+/*
+ * Buffer for sub-options, and macros
+ * for suboptions buffer manipulations
+ */
+unsigned char subbuffer[1024], *subpointer= subbuffer, *subend= subbuffer;
+
+#define SB_CLEAR() subpointer = subbuffer;
+#define SB_TERM() { subend = subpointer; SB_CLEAR(); }
+#define SB_ACCUM(c) if (subpointer < (subbuffer+sizeof subbuffer)) { \
+ *subpointer++ = (c); \
+ }
+#define SB_GET() ((*subpointer++)&0xff)
+#define SB_EOF() (subpointer >= subend)
+#define SB_LEN() (subend - subpointer)
+
+
+
+/*
+ * State for recv fsm
+ */
+#define TS_DATA 0 /* base state */
+#define TS_IAC 1 /* look for double IAC's */
+#define TS_CR 2 /* CR-LF ->'s CR */
+#define TS_SB 3 /* throw away begin's... */
+#define TS_SE 4 /* ...end's (suboption negotiation) */
+#define TS_WILL 5 /* will option negotiation */
+#define TS_WONT 6 /* wont " */
+#define TS_DO 7 /* do " */
+#define TS_DONT 8 /* dont " */
+
+ void
+telrcv()
+{
+ register int c;
+ static int state = TS_DATA;
+#if defined(CRAY2) && defined(UNICOS5)
+ char *opfrontp = pfrontp;
+#endif
+
+ while (ncc > 0) {
+ if ((&ptyobuf[BUFSIZ] - pfrontp) < 2)
+ break;
+ c = *netip++ & 0377, ncc--;
+#if defined(ENCRYPTION)
+ if (decrypt_input)
+ c = (*decrypt_input)(c);
+#endif
+ switch (state) {
+
+ case TS_CR:
+ state = TS_DATA;
+ /* Strip off \n or \0 after a \r */
+ if ((c == 0) || (c == '\n')) {
+ break;
+ }
+ /* FALL THROUGH */
+
+ case TS_DATA:
+ if (c == IAC) {
+ state = TS_IAC;
+ break;
+ }
+ /*
+ * We now map \r\n ==> \r for pragmatic reasons.
+ * Many client implementations send \r\n when
+ * the user hits the CarriageReturn key.
+ *
+ * We USED to map \r\n ==> \n, since \r\n says
+ * that we want to be in column 1 of the next
+ * printable line, and \n is the standard
+ * unix way of saying that (\r is only good
+ * if CRMOD is set, which it normally is).
+ */
+ if ((c == '\r') && his_state_is_wont(TELOPT_BINARY)) {
+ int nc = *netip;
+#if defined(ENCRYPTION)
+ if (decrypt_input)
+ nc = (*decrypt_input)(nc & 0xff);
+#endif
+#ifdef LINEMODE
+ /*
+ * If we are operating in linemode,
+ * convert to local end-of-line.
+ */
+ if (linemode && (ncc > 0) && (('\n' == nc) ||
+ ((0 == nc) && tty_iscrnl())) ) {
+ netip++; ncc--;
+ c = '\n';
+ } else
+#endif
+ {
+#if defined(ENCRYPTION)
+ if (decrypt_input)
+ (void)(*decrypt_input)(-1);
+#endif
+ state = TS_CR;
+ }
+ }
+ *pfrontp++ = c;
+ break;
+
+ case TS_IAC:
+gotiac: switch (c) {
+
+ /*
+ * Send the process on the pty side an
+ * interrupt. Do this with a NULL or
+ * interrupt char; depending on the tty mode.
+ */
+ case IP:
+ DIAG(TD_OPTIONS,
+ printoption("td: recv IAC", c));
+ interrupt();
+ break;
+
+ case BREAK:
+ DIAG(TD_OPTIONS,
+ printoption("td: recv IAC", c));
+ sendbrk();
+ break;
+
+ /*
+ * Are You There?
+ */
+ case AYT:
+ DIAG(TD_OPTIONS,
+ printoption("td: recv IAC", c));
+ recv_ayt();
+ break;
+
+ /*
+ * Abort Output
+ */
+ case AO:
+ {
+ DIAG(TD_OPTIONS,
+ printoption("td: recv IAC", c));
+ ptyflush(); /* half-hearted */
+ init_termbuf();
+
+ if (slctab[SLC_AO].sptr &&
+ *slctab[SLC_AO].sptr != (cc_t)(_POSIX_VDISABLE)) {
+ *pfrontp++ =
+ (unsigned char)*slctab[SLC_AO].sptr;
+ }
+
+ netclear(); /* clear buffer back */
+ *nfrontp++ = IAC;
+ *nfrontp++ = DM;
+ neturg = nfrontp-1; /* off by one XXX */
+ DIAG(TD_OPTIONS,
+ printoption("td: send IAC", DM));
+ break;
+ }
+
+ /*
+ * Erase Character and
+ * Erase Line
+ */
+ case EC:
+ case EL:
+ {
+ cc_t ch;
+
+ DIAG(TD_OPTIONS,
+ printoption("td: recv IAC", c));
+ ptyflush(); /* half-hearted */
+ init_termbuf();
+ if (c == EC)
+ ch = *slctab[SLC_EC].sptr;
+ else
+ ch = *slctab[SLC_EL].sptr;
+ if (ch != (cc_t)(_POSIX_VDISABLE))
+ *pfrontp++ = (unsigned char)ch;
+ break;
+ }
+
+ /*
+ * Check for urgent data...
+ */
+ case DM:
+ DIAG(TD_OPTIONS,
+ printoption("td: recv IAC", c));
+ SYNCHing = stilloob(net);
+ settimer(gotDM);
+ break;
+
+
+ /*
+ * Begin option subnegotiation...
+ */
+ case SB:
+ state = TS_SB;
+ SB_CLEAR();
+ continue;
+
+ case WILL:
+ state = TS_WILL;
+ continue;
+
+ case WONT:
+ state = TS_WONT;
+ continue;
+
+ case DO:
+ state = TS_DO;
+ continue;
+
+ case DONT:
+ state = TS_DONT;
+ continue;
+ case EOR:
+ if (his_state_is_will(TELOPT_EOR))
+ doeof();
+ break;
+
+ /*
+ * Handle RFC 10xx Telnet linemode option additions
+ * to command stream (EOF, SUSP, ABORT).
+ */
+ case xEOF:
+ doeof();
+ break;
+
+ case SUSP:
+ sendsusp();
+ break;
+
+ case ABORT:
+ sendbrk();
+ break;
+
+ case IAC:
+ *pfrontp++ = c;
+ break;
+ }
+ state = TS_DATA;
+ break;
+
+ case TS_SB:
+ if (c == IAC) {
+ state = TS_SE;
+ } else {
+ SB_ACCUM(c);
+ }
+ break;
+
+ case TS_SE:
+ if (c != SE) {
+ if (c != IAC) {
+ /*
+ * bad form of suboption negotiation.
+ * handle it in such a way as to avoid
+ * damage to local state. Parse
+ * suboption buffer found so far,
+ * then treat remaining stream as
+ * another command sequence.
+ */
+
+ /* for DIAGNOSTICS */
+ SB_ACCUM(IAC);
+ SB_ACCUM(c);
+ subpointer -= 2;
+
+ SB_TERM();
+ suboption();
+ state = TS_IAC;
+ goto gotiac;
+ }
+ SB_ACCUM(c);
+ state = TS_SB;
+ } else {
+ /* for DIAGNOSTICS */
+ SB_ACCUM(IAC);
+ SB_ACCUM(SE);
+ subpointer -= 2;
+
+ SB_TERM();
+ suboption(); /* handle sub-option */
+ state = TS_DATA;
+ }
+ break;
+
+ case TS_WILL:
+ willoption(c);
+ state = TS_DATA;
+ continue;
+
+ case TS_WONT:
+ wontoption(c);
+ state = TS_DATA;
+ continue;
+
+ case TS_DO:
+ dooption(c);
+ state = TS_DATA;
+ continue;
+
+ case TS_DONT:
+ dontoption(c);
+ state = TS_DATA;
+ continue;
+
+ default:
+ syslog(LOG_ERR, "telnetd: panic state=%d\n", state);
+ printf("telnetd: panic state=%d\n", state);
+ exit(1);
+ }
+ }
+#if defined(CRAY2) && defined(UNICOS5)
+ if (!linemode) {
+ char xptyobuf[BUFSIZ+NETSLOP];
+ char xbuf2[BUFSIZ];
+ register char *cp;
+ int n = pfrontp - opfrontp, oc;
+ bcopy(opfrontp, xptyobuf, n);
+ pfrontp = opfrontp;
+ pfrontp += term_input(xptyobuf, pfrontp, n, BUFSIZ+NETSLOP,
+ xbuf2, &oc, BUFSIZ);
+ for (cp = xbuf2; oc > 0; --oc)
+ if ((*nfrontp++ = *cp++) == IAC)
+ *nfrontp++ = IAC;
+ }
+#endif /* defined(CRAY2) && defined(UNICOS5) */
+} /* end of telrcv */
+
+/*
+ * The will/wont/do/dont state machines are based on Dave Borman's
+ * Telnet option processing state machine.
+ *
+ * These correspond to the following states:
+ * my_state = the last negotiated state
+ * want_state = what I want the state to go to
+ * want_resp = how many requests I have sent
+ * All state defaults are negative, and resp defaults to 0.
+ *
+ * When initiating a request to change state to new_state:
+ *
+ * if ((want_resp == 0 && new_state == my_state) || want_state == new_state) {
+ * do nothing;
+ * } else {
+ * want_state = new_state;
+ * send new_state;
+ * want_resp++;
+ * }
+ *
+ * When receiving new_state:
+ *
+ * if (want_resp) {
+ * want_resp--;
+ * if (want_resp && (new_state == my_state))
+ * want_resp--;
+ * }
+ * if ((want_resp == 0) && (new_state != want_state)) {
+ * if (ok_to_switch_to new_state)
+ * want_state = new_state;
+ * else
+ * want_resp++;
+ * send want_state;
+ * }
+ * my_state = new_state;
+ *
+ * Note that new_state is implied in these functions by the function itself.
+ * will and do imply positive new_state, wont and dont imply negative.
+ *
+ * Finally, there is one catch. If we send a negative response to a
+ * positive request, my_state will be the positive while want_state will
+ * remain negative. my_state will revert to negative when the negative
+ * acknowlegment arrives from the peer. Thus, my_state generally tells
+ * us not only the last negotiated state, but also tells us what the peer
+ * wants to be doing as well. It is important to understand this difference
+ * as we may wish to be processing data streams based on our desired state
+ * (want_state) or based on what the peer thinks the state is (my_state).
+ *
+ * This all works fine because if the peer sends a positive request, the data
+ * that we receive prior to negative acknowlegment will probably be affected
+ * by the positive state, and we can process it as such (if we can; if we
+ * can't then it really doesn't matter). If it is that important, then the
+ * peer probably should be buffering until this option state negotiation
+ * is complete.
+ *
+ */
+ void
+send_do(option, init)
+ int option, init;
+{
+ if (init) {
+ if ((do_dont_resp[option] == 0 && his_state_is_will(option)) ||
+ his_want_state_is_will(option))
+ return;
+ /*
+ * Special case for TELOPT_TM: We send a DO, but pretend
+ * that we sent a DONT, so that we can send more DOs if
+ * we want to.
+ */
+ if (option == TELOPT_TM)
+ set_his_want_state_wont(option);
+ else
+ set_his_want_state_will(option);
+ do_dont_resp[option]++;
+ }
+ (void) sprintf(nfrontp, doopt, option);
+ nfrontp += sizeof (dont) - 2;
+
+ DIAG(TD_OPTIONS, printoption("td: send do", option));
+}
+
+#ifdef AUTHENTICATION
+extern void auth_request();
+#endif
+#ifdef LINEMODE
+extern void doclientstat();
+#endif
+#ifdef ENCRYPTION
+extern void encrypt_send_support();
+#endif
+
+ void
+willoption(option)
+ int option;
+{
+ int changeok = 0;
+ void (*func)() = 0;
+
+ /*
+ * process input from peer.
+ */
+
+ DIAG(TD_OPTIONS, printoption("td: recv will", option));
+
+ if (do_dont_resp[option]) {
+ do_dont_resp[option]--;
+ if (do_dont_resp[option] && his_state_is_will(option))
+ do_dont_resp[option]--;
+ }
+ if (do_dont_resp[option] == 0) {
+ if (his_want_state_is_wont(option)) {
+ switch (option) {
+
+ case TELOPT_BINARY:
+ init_termbuf();
+ tty_binaryin(1);
+ set_termbuf();
+ changeok++;
+ break;
+
+ case TELOPT_ECHO:
+ /*
+ * See comments below for more info.
+ */
+ not42 = 0; /* looks like a 4.2 system */
+ break;
+
+ case TELOPT_TM:
+#if defined(LINEMODE) && defined(KLUDGELINEMODE)
+ /*
+ * This telnetd implementation does not really
+ * support timing marks, it just uses them to
+ * support the kludge linemode stuff. If we
+ * receive a will or wont TM in response to our
+ * do TM request that may have been sent to
+ * determine kludge linemode support, process
+ * it, otherwise TM should get a negative
+ * response back.
+ */
+ /*
+ * Handle the linemode kludge stuff.
+ * If we are not currently supporting any
+ * linemode at all, then we assume that this
+ * is the client telling us to use kludge
+ * linemode in response to our query. Set the
+ * linemode type that is to be supported, note
+ * that the client wishes to use linemode, and
+ * eat the will TM as though it never arrived.
+ */
+ if (lmodetype < KLUDGE_LINEMODE) {
+ lmodetype = KLUDGE_LINEMODE;
+ clientstat(TELOPT_LINEMODE, WILL, 0);
+ send_wont(TELOPT_SGA, 1);
+ } else if (lmodetype == NO_AUTOKLUDGE) {
+ lmodetype = KLUDGE_OK;
+ }
+#endif /* defined(LINEMODE) && defined(KLUDGELINEMODE) */
+ /*
+ * We never respond to a WILL TM, and
+ * we leave the state WONT.
+ */
+ return;
+
+ case TELOPT_LFLOW:
+ /*
+ * If we are going to support flow control
+ * option, then don't worry peer that we can't
+ * change the flow control characters.
+ */
+ slctab[SLC_XON].defset.flag &= ~SLC_LEVELBITS;
+ slctab[SLC_XON].defset.flag |= SLC_DEFAULT;
+ slctab[SLC_XOFF].defset.flag &= ~SLC_LEVELBITS;
+ slctab[SLC_XOFF].defset.flag |= SLC_DEFAULT;
+ case TELOPT_TTYPE:
+ case TELOPT_SGA:
+ case TELOPT_NAWS:
+ case TELOPT_TSPEED:
+ case TELOPT_XDISPLOC:
+ case TELOPT_ENVIRON:
+ changeok++;
+ break;
+
+#ifdef LINEMODE
+ case TELOPT_LINEMODE:
+# ifdef KLUDGELINEMODE
+ /*
+ * Note client's desire to use linemode.
+ */
+ lmodetype = REAL_LINEMODE;
+# endif /* KLUDGELINEMODE */
+ func = doclientstat;
+ changeok++;
+ break;
+#endif /* LINEMODE */
+
+#ifdef AUTHENTICATION
+ case TELOPT_AUTHENTICATION:
+ func = auth_request;
+ changeok++;
+ break;
+#endif
+
+#ifdef ENCRYPTION
+ case TELOPT_ENCRYPT:
+ func = encrypt_send_support;
+ changeok++;
+ break;
+#endif
+
+ default:
+ break;
+ }
+ if (changeok) {
+ set_his_want_state_will(option);
+ send_do(option, 0);
+ } else {
+ do_dont_resp[option]++;
+ send_dont(option, 0);
+ }
+ } else {
+ /*
+ * Option processing that should happen when
+ * we receive conformation of a change in
+ * state that we had requested.
+ */
+ switch (option) {
+ case TELOPT_ECHO:
+ not42 = 0; /* looks like a 4.2 system */
+ /*
+ * Egads, he responded "WILL ECHO". Turn
+ * it off right now!
+ */
+ send_dont(option, 1);
+ /*
+ * "WILL ECHO". Kludge upon kludge!
+ * A 4.2 client is now echoing user input at
+ * the tty. This is probably undesireable and
+ * it should be stopped. The client will
+ * respond WONT TM to the DO TM that we send to
+ * check for kludge linemode. When the WONT TM
+ * arrives, linemode will be turned off and a
+ * change propogated to the pty. This change
+ * will cause us to process the new pty state
+ * in localstat(), which will notice that
+ * linemode is off and send a WILL ECHO
+ * so that we are properly in character mode and
+ * all is well.
+ */
+ break;
+#ifdef LINEMODE
+ case TELOPT_LINEMODE:
+# ifdef KLUDGELINEMODE
+ /*
+ * Note client's desire to use linemode.
+ */
+ lmodetype = REAL_LINEMODE;
+# endif /* KLUDGELINEMODE */
+ func = doclientstat;
+ break;
+#endif /* LINEMODE */
+
+#ifdef AUTHENTICATION
+ case TELOPT_AUTHENTICATION:
+ func = auth_request;
+ break;
+#endif
+
+#ifdef ENCRYPTION
+ case TELOPT_ENCRYPT:
+ func = encrypt_send_support;
+ break;
+#endif
+#ifdef LINE_MODE
+ case TELOPT_LFLOW:
+ func = localstat;
+ break;
+#endif
+ }
+ }
+ }
+ set_his_state_will(option);
+ if (func)
+ (*func)();
+} /* end of willoption */
+
+ void
+send_dont(option, init)
+ int option, init;
+{
+ if (init) {
+ if ((do_dont_resp[option] == 0 && his_state_is_wont(option)) ||
+ his_want_state_is_wont(option))
+ return;
+ set_his_want_state_wont(option);
+ do_dont_resp[option]++;
+ }
+ (void) sprintf(nfrontp, dont, option);
+ nfrontp += sizeof (doopt) - 2;
+
+ DIAG(TD_OPTIONS, printoption("td: send dont", option));
+}
+
+ void
+wontoption(option)
+ int option;
+{
+ /*
+ * Process client input.
+ */
+
+ DIAG(TD_OPTIONS, printoption("td: recv wont", option));
+
+ if (do_dont_resp[option]) {
+ do_dont_resp[option]--;
+ if (do_dont_resp[option] && his_state_is_wont(option))
+ do_dont_resp[option]--;
+ }
+ if (do_dont_resp[option] == 0) {
+ if (his_want_state_is_will(option)) {
+ /* it is always ok to change to negative state */
+ switch (option) {
+ case TELOPT_ECHO:
+ not42 = 1; /* doesn't seem to be a 4.2 system */
+ break;
+
+ case TELOPT_BINARY:
+ init_termbuf();
+ tty_binaryin(0);
+ set_termbuf();
+ break;
+
+#ifdef LINEMODE
+ case TELOPT_LINEMODE:
+# ifdef KLUDGELINEMODE
+ /*
+ * If real linemode is supported, then client is
+ * asking to turn linemode off.
+ */
+ if (lmodetype != REAL_LINEMODE)
+ break;
+ lmodetype = KLUDGE_LINEMODE;
+# endif /* KLUDGELINEMODE */
+ clientstat(TELOPT_LINEMODE, WONT, 0);
+ break;
+#endif /* LINEMODE */
+
+ case TELOPT_TM:
+ /*
+ * If we get a WONT TM, and had sent a DO TM,
+ * don't respond with a DONT TM, just leave it
+ * as is. Short circut the state machine to
+ * achive this.
+ */
+ set_his_want_state_wont(TELOPT_TM);
+ return;
+
+ case TELOPT_LFLOW:
+ /*
+ * If we are not going to support flow control
+ * option, then let peer know that we can't
+ * change the flow control characters.
+ */
+ slctab[SLC_XON].defset.flag &= ~SLC_LEVELBITS;
+ slctab[SLC_XON].defset.flag |= SLC_CANTCHANGE;
+ slctab[SLC_XOFF].defset.flag &= ~SLC_LEVELBITS;
+ slctab[SLC_XOFF].defset.flag |= SLC_CANTCHANGE;
+ break;
+
+#if defined(AUTHENTICATION)
+ case TELOPT_AUTHENTICATION:
+ auth_finished(0, AUTH_REJECT);
+ break;
+#endif
+
+ /*
+ * For options that we might spin waiting for
+ * sub-negotiation, if the client turns off the
+ * option rather than responding to the request,
+ * we have to treat it here as if we got a response
+ * to the sub-negotiation, (by updating the timers)
+ * so that we'll break out of the loop.
+ */
+ case TELOPT_TTYPE:
+ settimer(ttypesubopt);
+ break;
+
+ case TELOPT_TSPEED:
+ settimer(tspeedsubopt);
+ break;
+
+ case TELOPT_XDISPLOC:
+ settimer(xdisplocsubopt);
+ break;
+
+ case TELOPT_ENVIRON:
+ settimer(environsubopt);
+ break;
+
+ default:
+ break;
+ }
+ set_his_want_state_wont(option);
+ if (his_state_is_will(option))
+ send_dont(option, 0);
+ } else {
+ switch (option) {
+ case TELOPT_TM:
+#if defined(LINEMODE) && defined(KLUDGELINEMODE)
+ if (lmodetype < NO_AUTOKLUDGE) {
+ lmodetype = NO_LINEMODE;
+ clientstat(TELOPT_LINEMODE, WONT, 0);
+ send_will(TELOPT_SGA, 1);
+ send_will(TELOPT_ECHO, 1);
+ }
+#endif /* defined(LINEMODE) && defined(KLUDGELINEMODE) */
+ break;
+
+#if defined(AUTHENTICATION)
+ case TELOPT_AUTHENTICATION:
+ auth_finished(0, AUTH_REJECT);
+ break;
+#endif
+ default:
+ break;
+ }
+ }
+ }
+ set_his_state_wont(option);
+
+} /* end of wontoption */
+
+ void
+send_will(option, init)
+ int option, init;
+{
+ if (init) {
+ if ((will_wont_resp[option] == 0 && my_state_is_will(option))||
+ my_want_state_is_will(option))
+ return;
+ set_my_want_state_will(option);
+ will_wont_resp[option]++;
+ }
+ (void) sprintf(nfrontp, will, option);
+ nfrontp += sizeof (doopt) - 2;
+
+ DIAG(TD_OPTIONS, printoption("td: send will", option));
+}
+
+#if !defined(LINEMODE) || !defined(KLUDGELINEMODE)
+/*
+ * When we get a DONT SGA, we will try once to turn it
+ * back on. If the other side responds DONT SGA, we
+ * leave it at that. This is so that when we talk to
+ * clients that understand KLUDGELINEMODE but not LINEMODE,
+ * we'll keep them in char-at-a-time mode.
+ */
+int turn_on_sga = 0;
+#endif
+
+ void
+dooption(option)
+ int option;
+{
+ int changeok = 0;
+
+ /*
+ * Process client input.
+ */
+
+ DIAG(TD_OPTIONS, printoption("td: recv do", option));
+
+ if (will_wont_resp[option]) {
+ will_wont_resp[option]--;
+ if (will_wont_resp[option] && my_state_is_will(option))
+ will_wont_resp[option]--;
+ }
+ if ((will_wont_resp[option] == 0) && (my_want_state_is_wont(option))) {
+ switch (option) {
+ case TELOPT_ECHO:
+#ifdef LINEMODE
+# ifdef KLUDGELINEMODE
+ if (lmodetype == NO_LINEMODE)
+# else
+ if (his_state_is_wont(TELOPT_LINEMODE))
+# endif
+#endif
+ {
+ init_termbuf();
+ tty_setecho(1);
+ set_termbuf();
+ }
+ changeok++;
+ break;
+
+ case TELOPT_BINARY:
+ init_termbuf();
+ tty_binaryout(1);
+ set_termbuf();
+ changeok++;
+ break;
+
+ case TELOPT_SGA:
+#if defined(LINEMODE) && defined(KLUDGELINEMODE)
+ /*
+ * If kludge linemode is in use, then we must
+ * process an incoming do SGA for linemode
+ * purposes.
+ */
+ if (lmodetype == KLUDGE_LINEMODE) {
+ /*
+ * Receipt of "do SGA" in kludge
+ * linemode is the peer asking us to
+ * turn off linemode. Make note of
+ * the request.
+ */
+ clientstat(TELOPT_LINEMODE, WONT, 0);
+ /*
+ * If linemode did not get turned off
+ * then don't tell peer that we did.
+ * Breaking here forces a wont SGA to
+ * be returned.
+ */
+ if (linemode)
+ break;
+ }
+#else
+ turn_on_sga = 0;
+#endif /* defined(LINEMODE) && defined(KLUDGELINEMODE) */
+ changeok++;
+ break;
+
+ case TELOPT_STATUS:
+ changeok++;
+ break;
+
+ case TELOPT_TM:
+ /*
+ * Special case for TM. We send a WILL, but
+ * pretend we sent a WONT.
+ */
+ send_will(option, 0);
+ set_my_want_state_wont(option);
+ set_my_state_wont(option);
+ return;
+
+ case TELOPT_LOGOUT:
+ /*
+ * When we get a LOGOUT option, respond
+ * with a WILL LOGOUT, make sure that
+ * it gets written out to the network,
+ * and then just go away...
+ */
+ set_my_want_state_will(TELOPT_LOGOUT);
+ send_will(TELOPT_LOGOUT, 0);
+ set_my_state_will(TELOPT_LOGOUT);
+ (void)netflush();
+ cleanup(0);
+ /* NOT REACHED */
+ break;
+
+#if defined(ENCRYPTION)
+ case TELOPT_ENCRYPT:
+ changeok++;
+ break;
+#endif
+ case TELOPT_LINEMODE:
+ case TELOPT_TTYPE:
+ case TELOPT_NAWS:
+ case TELOPT_TSPEED:
+ case TELOPT_LFLOW:
+ case TELOPT_XDISPLOC:
+ case TELOPT_ENVIRON:
+ default:
+ break;
+ }
+ if (changeok) {
+ set_my_want_state_will(option);
+ send_will(option, 0);
+ } else {
+ will_wont_resp[option]++;
+ send_wont(option, 0);
+ }
+ }
+ set_my_state_will(option);
+
+} /* end of dooption */
+
+ void
+send_wont(option, init)
+ int option, init;
+{
+ if (init) {
+ if ((will_wont_resp[option] == 0 && my_state_is_wont(option)) ||
+ my_want_state_is_wont(option))
+ return;
+ set_my_want_state_wont(option);
+ will_wont_resp[option]++;
+ }
+ (void) sprintf(nfrontp, wont, option);
+ nfrontp += sizeof (wont) - 2;
+
+ DIAG(TD_OPTIONS, printoption("td: send wont", option));
+}
+
+ void
+dontoption(option)
+ int option;
+{
+ /*
+ * Process client input.
+ */
+
+
+ DIAG(TD_OPTIONS, printoption("td: recv dont", option));
+
+ if (will_wont_resp[option]) {
+ will_wont_resp[option]--;
+ if (will_wont_resp[option] && my_state_is_wont(option))
+ will_wont_resp[option]--;
+ }
+ if ((will_wont_resp[option] == 0) && (my_want_state_is_will(option))) {
+ switch (option) {
+ case TELOPT_BINARY:
+ init_termbuf();
+ tty_binaryout(0);
+ set_termbuf();
+ break;
+
+ case TELOPT_ECHO: /* we should stop echoing */
+#ifdef LINEMODE
+# ifdef KLUDGELINEMODE
+ if ((lmodetype != REAL_LINEMODE) &&
+ (lmodetype != KLUDGE_LINEMODE))
+# else
+ if (his_state_is_wont(TELOPT_LINEMODE))
+# endif
+#endif
+ {
+ init_termbuf();
+ tty_setecho(0);
+ set_termbuf();
+ }
+ break;
+
+ case TELOPT_SGA:
+#if defined(LINEMODE) && defined(KLUDGELINEMODE)
+ /*
+ * If kludge linemode is in use, then we
+ * must process an incoming do SGA for
+ * linemode purposes.
+ */
+ if ((lmodetype == KLUDGE_LINEMODE) ||
+ (lmodetype == KLUDGE_OK)) {
+ /*
+ * The client is asking us to turn
+ * linemode on.
+ */
+ lmodetype = KLUDGE_LINEMODE;
+ clientstat(TELOPT_LINEMODE, WILL, 0);
+ /*
+ * If we did not turn line mode on,
+ * then what do we say? Will SGA?
+ * This violates design of telnet.
+ * Gross. Very Gross.
+ */
+ }
+ break;
+#else
+ set_my_want_state_wont(option);
+ if (my_state_is_will(option))
+ send_wont(option, 0);
+ set_my_state_wont(option);
+ if (turn_on_sga ^= 1)
+ send_will(option, 1);
+ return;
+#endif /* defined(LINEMODE) && defined(KLUDGELINEMODE) */
+
+ default:
+ break;
+ }
+
+ set_my_want_state_wont(option);
+ if (my_state_is_will(option))
+ send_wont(option, 0);
+ }
+ set_my_state_wont(option);
+
+} /* end of dontoption */
+
+/*
+ * suboption()
+ *
+ * Look at the sub-option buffer, and try to be helpful to the other
+ * side.
+ *
+ * Currently we recognize:
+ *
+ * Terminal type is
+ * Linemode
+ * Window size
+ * Terminal speed
+ */
+ void
+suboption()
+{
+ register int subchar;
+
+ DIAG(TD_OPTIONS, {netflush(); printsub('<', subpointer, SB_LEN()+2);});
+
+ subchar = SB_GET();
+ switch (subchar) {
+ case TELOPT_TSPEED: {
+ register int xspeed, rspeed;
+
+ if (his_state_is_wont(TELOPT_TSPEED)) /* Ignore if option disabled */
+ break;
+
+ settimer(tspeedsubopt);
+
+ if (SB_EOF() || SB_GET() != TELQUAL_IS)
+ return;
+
+ xspeed = atoi((char *)subpointer);
+
+ while (SB_GET() != ',' && !SB_EOF());
+ if (SB_EOF())
+ return;
+
+ rspeed = atoi((char *)subpointer);
+ clientstat(TELOPT_TSPEED, xspeed, rspeed);
+
+ break;
+
+ } /* end of case TELOPT_TSPEED */
+
+ case TELOPT_TTYPE: { /* Yaaaay! */
+ static char terminalname[41];
+
+ if (his_state_is_wont(TELOPT_TTYPE)) /* Ignore if option disabled */
+ break;
+ settimer(ttypesubopt);
+
+ if (SB_EOF() || SB_GET() != TELQUAL_IS) {
+ return; /* ??? XXX but, this is the most robust */
+ }
+
+ terminaltype = terminalname;
+
+ while ((terminaltype < (terminalname + sizeof terminalname-1)) &&
+ !SB_EOF()) {
+ register int c;
+
+ c = SB_GET();
+ if (isupper(c)) {
+ c = tolower(c);
+ }
+ *terminaltype++ = c; /* accumulate name */
+ }
+ *terminaltype = 0;
+ terminaltype = terminalname;
+ break;
+ } /* end of case TELOPT_TTYPE */
+
+ case TELOPT_NAWS: {
+ register int xwinsize, ywinsize;
+
+ if (his_state_is_wont(TELOPT_NAWS)) /* Ignore if option disabled */
+ break;
+
+ if (SB_EOF())
+ return;
+ xwinsize = SB_GET() << 8;
+ if (SB_EOF())
+ return;
+ xwinsize |= SB_GET();
+ if (SB_EOF())
+ return;
+ ywinsize = SB_GET() << 8;
+ if (SB_EOF())
+ return;
+ ywinsize |= SB_GET();
+ clientstat(TELOPT_NAWS, xwinsize, ywinsize);
+
+ break;
+
+ } /* end of case TELOPT_NAWS */
+
+#ifdef LINEMODE
+ case TELOPT_LINEMODE: {
+ register int request;
+
+ if (his_state_is_wont(TELOPT_LINEMODE)) /* Ignore if option disabled */
+ break;
+ /*
+ * Process linemode suboptions.
+ */
+ if (SB_EOF())
+ break; /* garbage was sent */
+ request = SB_GET(); /* get will/wont */
+
+ if (SB_EOF())
+ break; /* another garbage check */
+
+ if (request == LM_SLC) { /* SLC is not preceeded by WILL or WONT */
+ /*
+ * Process suboption buffer of slc's
+ */
+ start_slc(1);
+ do_opt_slc(subpointer, subend - subpointer);
+ (void) end_slc(0);
+ break;
+ } else if (request == LM_MODE) {
+ if (SB_EOF())
+ return;
+ useeditmode = SB_GET(); /* get mode flag */
+ clientstat(LM_MODE, 0, 0);
+ break;
+ }
+
+ if (SB_EOF())
+ break;
+ switch (SB_GET()) { /* what suboption? */
+ case LM_FORWARDMASK:
+ /*
+ * According to spec, only server can send request for
+ * forwardmask, and client can only return a positive response.
+ * So don't worry about it.
+ */
+
+ default:
+ break;
+ }
+ break;
+ } /* end of case TELOPT_LINEMODE */
+#endif
+ case TELOPT_STATUS: {
+ int mode;
+
+ if (SB_EOF())
+ break;
+ mode = SB_GET();
+ switch (mode) {
+ case TELQUAL_SEND:
+ if (my_state_is_will(TELOPT_STATUS))
+ send_status();
+ break;
+
+ case TELQUAL_IS:
+ break;
+
+ default:
+ break;
+ }
+ break;
+ } /* end of case TELOPT_STATUS */
+
+ case TELOPT_XDISPLOC: {
+ if (SB_EOF() || SB_GET() != TELQUAL_IS)
+ return;
+ settimer(xdisplocsubopt);
+ subpointer[SB_LEN()] = '\0';
+ (void)setenv("DISPLAY", (char *)subpointer, 1);
+ break;
+ } /* end of case TELOPT_XDISPLOC */
+
+ case TELOPT_ENVIRON: {
+ register int c;
+ register char *cp, *varp, *valp;
+
+ if (SB_EOF())
+ return;
+ c = SB_GET();
+ if (c == TELQUAL_IS)
+ settimer(environsubopt);
+ else if (c != TELQUAL_INFO)
+ return;
+
+ while (!SB_EOF()) {
+ c = SB_GET();
+ if ((c == ENV_VAR) || (c == ENV_USERVAR))
+ break;
+ }
+
+ if (SB_EOF())
+ return;
+
+ cp = varp = (char *)subpointer;
+ valp = 0;
+
+ while (!SB_EOF()) {
+ switch (c = SB_GET()) {
+ case ENV_VALUE:
+ *cp = '\0';
+ cp = valp = (char *)subpointer;
+ break;
+
+ case ENV_VAR:
+ case ENV_USERVAR:
+ *cp = '\0';
+ if (valp)
+ (void)setenv(varp, valp, 1);
+ else
+ unsetenv(varp);
+ cp = varp = (char *)subpointer;
+ valp = 0;
+ break;
+
+ case ENV_ESC:
+ if (SB_EOF())
+ break;
+ c = SB_GET();
+ /* FALL THROUGH */
+ default:
+ *cp++ = c;
+ break;
+ }
+ }
+ *cp = '\0';
+ if (valp)
+ (void)setenv(varp, valp, 1);
+ else
+ unsetenv(varp);
+ break;
+ } /* end of case TELOPT_ENVIRON */
+#if defined(AUTHENTICATION)
+ case TELOPT_AUTHENTICATION:
+ if (SB_EOF())
+ break;
+ switch(SB_GET()) {
+ case TELQUAL_SEND:
+ case TELQUAL_REPLY:
+ /*
+ * These are sent by us and cannot be sent by
+ * the client.
+ */
+ break;
+ case TELQUAL_IS:
+ auth_is(subpointer, SB_LEN());
+ break;
+ case TELQUAL_NAME:
+ auth_name(subpointer, SB_LEN());
+ break;
+ }
+ break;
+#endif
+#if defined(ENCRYPTION)
+ case TELOPT_ENCRYPT:
+ if (SB_EOF())
+ break;
+ switch(SB_GET()) {
+ case ENCRYPT_SUPPORT:
+ encrypt_support(subpointer, SB_LEN());
+ break;
+ case ENCRYPT_IS:
+ encrypt_is(subpointer, SB_LEN());
+ break;
+ case ENCRYPT_REPLY:
+ encrypt_reply(subpointer, SB_LEN());
+ break;
+ case ENCRYPT_START:
+ encrypt_start(subpointer, SB_LEN());
+ break;
+ case ENCRYPT_END:
+ encrypt_end();
+ break;
+ case ENCRYPT_REQSTART:
+ encrypt_request_start(subpointer, SB_LEN());
+ break;
+ case ENCRYPT_REQEND:
+ /*
+ * We can always send an REQEND so that we cannot
+ * get stuck encrypting. We should only get this
+ * if we have been able to get in the correct mode
+ * anyhow.
+ */
+ encrypt_request_end();
+ break;
+ case ENCRYPT_ENC_KEYID:
+ encrypt_enc_keyid(subpointer, SB_LEN());
+ break;
+ case ENCRYPT_DEC_KEYID:
+ encrypt_dec_keyid(subpointer, SB_LEN());
+ break;
+ default:
+ break;
+ }
+ break;
+#endif
+
+ default:
+ break;
+ } /* end of switch */
+
+} /* end of suboption */
+
+ void
+doclientstat()
+{
+ clientstat(TELOPT_LINEMODE, WILL, 0);
+}
+
+#define ADD(c) *ncp++ = c;
+#define ADD_DATA(c) { *ncp++ = c; if (c == SE) *ncp++ = c; }
+ void
+send_status()
+{
+ unsigned char statusbuf[256];
+ register unsigned char *ncp;
+ register unsigned char i;
+
+ ncp = statusbuf;
+
+ netflush(); /* get rid of anything waiting to go out */
+
+ ADD(IAC);
+ ADD(SB);
+ ADD(TELOPT_STATUS);
+ ADD(TELQUAL_IS);
+
+ /*
+ * We check the want_state rather than the current state,
+ * because if we received a DO/WILL for an option that we
+ * don't support, and the other side didn't send a DONT/WONT
+ * in response to our WONT/DONT, then the "state" will be
+ * WILL/DO, and the "want_state" will be WONT/DONT. We
+ * need to go by the latter.
+ */
+ for (i = 0; i < NTELOPTS; i++) {
+ if (my_want_state_is_will(i)) {
+ ADD(WILL);
+ ADD_DATA(i);
+ if (i == IAC)
+ ADD(IAC);
+ }
+ if (his_want_state_is_will(i)) {
+ ADD(DO);
+ ADD_DATA(i);
+ if (i == IAC)
+ ADD(IAC);
+ }
+ }
+
+ if (his_want_state_is_will(TELOPT_LFLOW)) {
+ ADD(SB);
+ ADD(TELOPT_LFLOW);
+ if (flowmode) {
+ ADD(LFLOW_ON);
+ } else {
+ ADD(LFLOW_OFF);
+ }
+ ADD(SE);
+
+ if (restartany >= 0) {
+ ADD(SB)
+ ADD(TELOPT_LFLOW);
+ if (restartany) {
+ ADD(LFLOW_RESTART_ANY);
+ } else {
+ ADD(LFLOW_RESTART_XON);
+ }
+ ADD(SE)
+ ADD(SB);
+ }
+ }
+
+#ifdef LINEMODE
+ if (his_want_state_is_will(TELOPT_LINEMODE)) {
+ unsigned char *cp, *cpe;
+ int len;
+
+ ADD(SB);
+ ADD(TELOPT_LINEMODE);
+ ADD(LM_MODE);
+ ADD_DATA(editmode);
+ if (editmode == IAC)
+ ADD(IAC);
+ ADD(SE);
+
+ ADD(SB);
+ ADD(TELOPT_LINEMODE);
+ ADD(LM_SLC);
+ start_slc(0);
+ send_slc();
+ len = end_slc(&cp);
+ for (cpe = cp + len; cp < cpe; cp++)
+ ADD_DATA(*cp);
+ ADD(SE);
+ }
+#endif /* LINEMODE */
+
+ ADD(IAC);
+ ADD(SE);
+
+ writenet(statusbuf, ncp - statusbuf);
+ netflush(); /* Send it on its way */
+
+ DIAG(TD_OPTIONS,
+ {printsub('>', statusbuf, ncp - statusbuf); netflush();});
+}
--- /dev/null
+/*
+ * Copyright (c) 1989 Regents of the University of California.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef lint
+static char sccsid[] = "@(#)sys_term.c 5.19 (Berkeley) 1/19/93";
+#endif /* not lint */
+
+#include "telnetd.h"
+#include "pathnames.h"
+
+#if defined(AUTHENTICATION)
+#include <libtelnet/auth.h>
+#endif
+
+#ifdef NEWINIT
+#include <initreq.h>
+#else /* NEWINIT*/
+# ifdef UTMPX
+# include <utmpx.h>
+# else
+# include <utmp.h>
+# endif /* UTMPX */
+struct utmp wtmp;
+
+int utmp_len = sizeof(wtmp.ut_host);
+# ifndef CRAY
+char wtmpf[] = "/usr/adm/wtmp";
+char utmpf[] = "/etc/utmp";
+# else /* CRAY */
+char wtmpf[] = "/etc/wtmp";
+#include <tmpdir.h>
+#include <sys/wait.h>
+# if defined(_SC_CRAY_SECURE_SYS)
+#include <sys/sysv.h>
+#include <sys/secstat.h>
+extern int secflag;
+extern struct sysv sysv;
+# endif /* _SC_CRAY_SECURE_SYS */
+# endif /* CRAY */
+#endif /* NEWINIT */
+
+#ifdef STREAMSPTY
+#include <sac.h>
+#include <sys/stropts.h>
+#endif
+
+#define SCPYN(a, b) (void) strncpy(a, b, sizeof(a))
+#define SCMPN(a, b) strncmp(a, b, sizeof(a))
+
+#ifdef STREAMS
+#include <sys/stream.h>
+#endif
+#include <sys/tty.h>
+#ifdef t_erase
+#undef t_erase
+#undef t_kill
+#undef t_intrc
+#undef t_quitc
+#undef t_startc
+#undef t_stopc
+#undef t_eofc
+#undef t_brkc
+#undef t_suspc
+#undef t_dsuspc
+#undef t_rprntc
+#undef t_flushc
+#undef t_werasc
+#undef t_lnextc
+#endif
+
+#if defined(UNICOS5) && defined(CRAY2) && !defined(EXTPROC)
+# define EXTPROC 0400
+#endif
+
+#ifndef USE_TERMIO
+struct termbuf {
+ struct sgttyb sg;
+ struct tchars tc;
+ struct ltchars ltc;
+ int state;
+ int lflags;
+} termbuf, termbuf2;
+# define cfsetospeed(tp, val) (tp)->sg.sg_ospeed = (val)
+# define cfsetispeed(tp, val) (tp)->sg.sg_ispeed = (val)
+# define cfgetospeed(tp) (tp)->sg.sg_ospeed
+# define cfgetispeed(tp) (tp)->sg.sg_ispeed
+#else /* USE_TERMIO */
+# ifdef SYSV_TERMIO
+# define termios termio
+# endif
+# ifndef TCSANOW
+# ifdef TCSETS
+# define TCSANOW TCSETS
+# define TCSADRAIN TCSETSW
+# define tcgetattr(f, t) ioctl(f, TCGETS, (char *)t)
+# else
+# ifdef TCSETA
+# define TCSANOW TCSETA
+# define TCSADRAIN TCSETAW
+# define tcgetattr(f, t) ioctl(f, TCGETA, (char *)t)
+# else
+# define TCSANOW TIOCSETA
+# define TCSADRAIN TIOCSETAW
+# define tcgetattr(f, t) ioctl(f, TIOCGETA, (char *)t)
+# endif
+# endif
+# define tcsetattr(f, a, t) ioctl(f, a, t)
+# define cfsetospeed(tp, val) (tp)->c_cflag &= ~CBAUD; \
+ (tp)->c_cflag |= (val)
+# define cfgetospeed(tp) ((tp)->c_cflag & CBAUD)
+# ifdef CIBAUD
+# define cfsetispeed(tp, val) (tp)->c_cflag &= ~CIBAUD; \
+ (tp)->c_cflag |= ((val)<<IBSHIFT)
+# define cfgetispeed(tp) (((tp)->c_cflag & CIBAUD)>>IBSHIFT)
+# else
+# define cfsetispeed(tp, val) (tp)->c_cflag &= ~CBAUD; \
+ (tp)->c_cflag |= (val)
+# define cfgetispeed(tp) ((tp)->c_cflag & CBAUD)
+# endif
+# endif /* TCSANOW */
+struct termios termbuf, termbuf2; /* pty control structure */
+# ifdef STREAMSPTY
+int ttyfd = -1;
+# endif
+#endif /* USE_TERMIO */
+
+/*
+ * init_termbuf()
+ * copy_termbuf(cp)
+ * set_termbuf()
+ *
+ * These three routines are used to get and set the "termbuf" structure
+ * to and from the kernel. init_termbuf() gets the current settings.
+ * copy_termbuf() hands in a new "termbuf" to write to the kernel, and
+ * set_termbuf() writes the structure into the kernel.
+ */
+
+ void
+init_termbuf()
+{
+#ifndef USE_TERMIO
+ (void) ioctl(pty, TIOCGETP, (char *)&termbuf.sg);
+ (void) ioctl(pty, TIOCGETC, (char *)&termbuf.tc);
+ (void) ioctl(pty, TIOCGLTC, (char *)&termbuf.ltc);
+# ifdef TIOCGSTATE
+ (void) ioctl(pty, TIOCGSTATE, (char *)&termbuf.state);
+# endif
+#else
+# ifdef STREAMSPTY
+ (void) tcgetattr(ttyfd, &termbuf);
+# else
+ (void) tcgetattr(pty, &termbuf);
+# endif
+#endif
+ termbuf2 = termbuf;
+}
+
+#if defined(LINEMODE) && defined(TIOCPKT_IOCTL)
+ void
+copy_termbuf(cp, len)
+ char *cp;
+ int len;
+{
+ if (len > sizeof(termbuf))
+ len = sizeof(termbuf);
+ bcopy(cp, (char *)&termbuf, len);
+ termbuf2 = termbuf;
+}
+#endif /* defined(LINEMODE) && defined(TIOCPKT_IOCTL) */
+
+ void
+set_termbuf()
+{
+ /*
+ * Only make the necessary changes.
+ */
+#ifndef USE_TERMIO
+ if (bcmp((char *)&termbuf.sg, (char *)&termbuf2.sg, sizeof(termbuf.sg)))
+ (void) ioctl(pty, TIOCSETN, (char *)&termbuf.sg);
+ if (bcmp((char *)&termbuf.tc, (char *)&termbuf2.tc, sizeof(termbuf.tc)))
+ (void) ioctl(pty, TIOCSETC, (char *)&termbuf.tc);
+ if (bcmp((char *)&termbuf.ltc, (char *)&termbuf2.ltc,
+ sizeof(termbuf.ltc)))
+ (void) ioctl(pty, TIOCSLTC, (char *)&termbuf.ltc);
+ if (termbuf.lflags != termbuf2.lflags)
+ (void) ioctl(pty, TIOCLSET, (char *)&termbuf.lflags);
+#else /* USE_TERMIO */
+ if (bcmp((char *)&termbuf, (char *)&termbuf2, sizeof(termbuf)))
+# ifdef STREAMSPTY
+ (void) tcsetattr(ttyfd, TCSANOW, &termbuf);
+# else
+ (void) tcsetattr(pty, TCSANOW, &termbuf);
+# endif
+# if defined(CRAY2) && defined(UNICOS5)
+ needtermstat = 1;
+# endif
+#endif /* USE_TERMIO */
+}
+
+
+/*
+ * spcset(func, valp, valpp)
+ *
+ * This function takes various special characters (func), and
+ * sets *valp to the current value of that character, and
+ * *valpp to point to where in the "termbuf" structure that
+ * value is kept.
+ *
+ * It returns the SLC_ level of support for this function.
+ */
+
+#ifndef USE_TERMIO
+ int
+spcset(func, valp, valpp)
+ int func;
+ cc_t *valp;
+ cc_t **valpp;
+{
+ switch(func) {
+ case SLC_EOF:
+ *valp = termbuf.tc.t_eofc;
+ *valpp = (cc_t *)&termbuf.tc.t_eofc;
+ return(SLC_VARIABLE);
+ case SLC_EC:
+ *valp = termbuf.sg.sg_erase;
+ *valpp = (cc_t *)&termbuf.sg.sg_erase;
+ return(SLC_VARIABLE);
+ case SLC_EL:
+ *valp = termbuf.sg.sg_kill;
+ *valpp = (cc_t *)&termbuf.sg.sg_kill;
+ return(SLC_VARIABLE);
+ case SLC_IP:
+ *valp = termbuf.tc.t_intrc;
+ *valpp = (cc_t *)&termbuf.tc.t_intrc;
+ return(SLC_VARIABLE|SLC_FLUSHIN|SLC_FLUSHOUT);
+ case SLC_ABORT:
+ *valp = termbuf.tc.t_quitc;
+ *valpp = (cc_t *)&termbuf.tc.t_quitc;
+ return(SLC_VARIABLE|SLC_FLUSHIN|SLC_FLUSHOUT);
+ case SLC_XON:
+ *valp = termbuf.tc.t_startc;
+ *valpp = (cc_t *)&termbuf.tc.t_startc;
+ return(SLC_VARIABLE);
+ case SLC_XOFF:
+ *valp = termbuf.tc.t_stopc;
+ *valpp = (cc_t *)&termbuf.tc.t_stopc;
+ return(SLC_VARIABLE);
+ case SLC_AO:
+ *valp = termbuf.ltc.t_flushc;
+ *valpp = (cc_t *)&termbuf.ltc.t_flushc;
+ return(SLC_VARIABLE);
+ case SLC_SUSP:
+ *valp = termbuf.ltc.t_suspc;
+ *valpp = (cc_t *)&termbuf.ltc.t_suspc;
+ return(SLC_VARIABLE);
+ case SLC_EW:
+ *valp = termbuf.ltc.t_werasc;
+ *valpp = (cc_t *)&termbuf.ltc.t_werasc;
+ return(SLC_VARIABLE);
+ case SLC_RP:
+ *valp = termbuf.ltc.t_rprntc;
+ *valpp = (cc_t *)&termbuf.ltc.t_rprntc;
+ return(SLC_VARIABLE);
+ case SLC_LNEXT:
+ *valp = termbuf.ltc.t_lnextc;
+ *valpp = (cc_t *)&termbuf.ltc.t_lnextc;
+ return(SLC_VARIABLE);
+ case SLC_FORW1:
+ *valp = termbuf.tc.t_brkc;
+ *valpp = (cc_t *)&termbuf.ltc.t_lnextc;
+ return(SLC_VARIABLE);
+ case SLC_BRK:
+ case SLC_SYNCH:
+ case SLC_AYT:
+ case SLC_EOR:
+ *valp = (cc_t)0;
+ *valpp = (cc_t *)0;
+ return(SLC_DEFAULT);
+ default:
+ *valp = (cc_t)0;
+ *valpp = (cc_t *)0;
+ return(SLC_NOSUPPORT);
+ }
+}
+
+#else /* USE_TERMIO */
+
+ int
+spcset(func, valp, valpp)
+ int func;
+ cc_t *valp;
+ cc_t **valpp;
+{
+
+#define setval(a, b) *valp = termbuf.c_cc[a]; \
+ *valpp = &termbuf.c_cc[a]; \
+ return(b);
+#define defval(a) *valp = ((cc_t)a); *valpp = (cc_t *)0; return(SLC_DEFAULT);
+
+ switch(func) {
+ case SLC_EOF:
+ setval(VEOF, SLC_VARIABLE);
+ case SLC_EC:
+ setval(VERASE, SLC_VARIABLE);
+ case SLC_EL:
+ setval(VKILL, SLC_VARIABLE);
+ case SLC_IP:
+ setval(VINTR, SLC_VARIABLE|SLC_FLUSHIN|SLC_FLUSHOUT);
+ case SLC_ABORT:
+ setval(VQUIT, SLC_VARIABLE|SLC_FLUSHIN|SLC_FLUSHOUT);
+ case SLC_XON:
+#ifdef VSTART
+ setval(VSTART, SLC_VARIABLE);
+#else
+ defval(0x13);
+#endif
+ case SLC_XOFF:
+#ifdef VSTOP
+ setval(VSTOP, SLC_VARIABLE);
+#else
+ defval(0x11);
+#endif
+ case SLC_EW:
+#ifdef VWERASE
+ setval(VWERASE, SLC_VARIABLE);
+#else
+ defval(0);
+#endif
+ case SLC_RP:
+#ifdef VREPRINT
+ setval(VREPRINT, SLC_VARIABLE);
+#else
+ defval(0);
+#endif
+ case SLC_LNEXT:
+#ifdef VLNEXT
+ setval(VLNEXT, SLC_VARIABLE);
+#else
+ defval(0);
+#endif
+ case SLC_AO:
+#if !defined(VDISCARD) && defined(VFLUSHO)
+# define VDISCARD VFLUSHO
+#endif
+#ifdef VDISCARD
+ setval(VDISCARD, SLC_VARIABLE|SLC_FLUSHOUT);
+#else
+ defval(0);
+#endif
+ case SLC_SUSP:
+#ifdef VSUSP
+ setval(VSUSP, SLC_VARIABLE|SLC_FLUSHIN);
+#else
+ defval(0);
+#endif
+#ifdef VEOL
+ case SLC_FORW1:
+ setval(VEOL, SLC_VARIABLE);
+#endif
+#ifdef VEOL2
+ case SLC_FORW2:
+ setval(VEOL2, SLC_VARIABLE);
+#endif
+ case SLC_AYT:
+#ifdef VSTATUS
+ setval(VSTATUS, SLC_VARIABLE);
+#else
+ defval(0);
+#endif
+
+ case SLC_BRK:
+ case SLC_SYNCH:
+ case SLC_EOR:
+ defval(0);
+
+ default:
+ *valp = 0;
+ *valpp = 0;
+ return(SLC_NOSUPPORT);
+ }
+}
+#endif /* USE_TERMIO */
+
+#ifdef CRAY
+/*
+ * getnpty()
+ *
+ * Return the number of pty's configured into the system.
+ */
+ int
+getnpty()
+{
+#ifdef _SC_CRAY_NPTY
+ int numptys;
+
+ if ((numptys = sysconf(_SC_CRAY_NPTY)) != -1)
+ return numptys;
+ else
+#endif /* _SC_CRAY_NPTY */
+ return 128;
+}
+#endif /* CRAY */
+
+#ifndef convex
+/*
+ * getpty()
+ *
+ * Allocate a pty. As a side effect, the external character
+ * array "line" contains the name of the slave side.
+ *
+ * Returns the file descriptor of the opened pty.
+ */
+#ifndef __GNUC__
+char *line = "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0";
+#else
+static char Xline[] = "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0";
+char *line = Xline;
+#endif
+#ifdef CRAY
+char *myline = "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0";
+#endif /* CRAY */
+
+ int
+getpty()
+{
+ register int p;
+#ifdef STREAMSPTY
+ int t;
+ char *ptsname();
+
+ p = open("/dev/ptmx", 2);
+ if (p > 0) {
+ grantpt(p);
+ unlockpt(p);
+ strcpy(line, ptsname(p));
+ return(p);
+ }
+
+#else /* ! STREAMSPTY */
+#ifndef CRAY
+ register char *cp, *p1, *p2;
+ register int i;
+#if defined(sun) && defined(TIOCGPGRP)
+ int dummy;
+#endif
+
+ (void) sprintf(line, "/dev/ptyXX");
+ p1 = &line[8];
+ p2 = &line[9];
+
+ for (cp = "pqrstuvwxyzPQRST"; *cp; cp++) {
+ struct stat stb;
+
+ *p1 = *cp;
+ *p2 = '0';
+ /*
+ * This stat() check is just to keep us from
+ * looping through all 256 combinations if there
+ * aren't that many ptys available.
+ */
+ if (stat(line, &stb) < 0)
+ break;
+ for (i = 0; i < 16; i++) {
+ *p2 = "0123456789abcdef"[i];
+ p = open(line, 2);
+ if (p > 0) {
+ line[5] = 't';
+ chown(line, 0, 0);
+ chmod(line, 0600);
+#if defined(sun) && defined(TIOCGPGRP)
+ if (ioctl(p, TIOCGPGRP, &dummy) == 0
+ || errno != EIO) {
+ chmod(line, 0666);
+ close(p);
+ line[5] = 'p';
+ } else
+#endif /* defined(sun) && defined(TIOCGPGRP) */
+ return(p);
+ }
+ }
+ }
+#else /* CRAY */
+ register int npty;
+ extern lowpty, highpty;
+ struct stat sb;
+
+ for (npty = lowpty; npty <= highpty; npty++) {
+ (void) sprintf(myline, "/dev/pty/%03d", npty);
+ p = open(myline, 2);
+ if (p < 0)
+ continue;
+ (void) sprintf(line, "/dev/ttyp%03d", npty);
+ /*
+ * Here are some shenanigans to make sure that there
+ * are no listeners lurking on the line.
+ */
+ if(stat(line, &sb) < 0) {
+ (void) close(p);
+ continue;
+ }
+ if(sb.st_uid || sb.st_gid || sb.st_mode != 0600) {
+ chown(line, 0, 0);
+ chmod(line, 0600);
+ (void)close(p);
+ p = open(myline, 2);
+ if (p < 0)
+ continue;
+ }
+ /*
+ * Now it should be safe...check for accessability.
+ */
+ if (access(line, 6) == 0)
+ return(p);
+ else {
+ /* no tty side to pty so skip it */
+ (void) close(p);
+ }
+ }
+#endif /* CRAY */
+#endif /* STREAMSPTY */
+ return(-1);
+}
+#endif /* convex */
+
+#ifdef LINEMODE
+/*
+ * tty_flowmode() Find out if flow control is enabled or disabled.
+ * tty_linemode() Find out if linemode (external processing) is enabled.
+ * tty_setlinemod(on) Turn on/off linemode.
+ * tty_isecho() Find out if echoing is turned on.
+ * tty_setecho(on) Enable/disable character echoing.
+ * tty_israw() Find out if terminal is in RAW mode.
+ * tty_binaryin(on) Turn on/off BINARY on input.
+ * tty_binaryout(on) Turn on/off BINARY on output.
+ * tty_isediting() Find out if line editing is enabled.
+ * tty_istrapsig() Find out if signal trapping is enabled.
+ * tty_setedit(on) Turn on/off line editing.
+ * tty_setsig(on) Turn on/off signal trapping.
+ * tty_issofttab() Find out if tab expansion is enabled.
+ * tty_setsofttab(on) Turn on/off soft tab expansion.
+ * tty_islitecho() Find out if typed control chars are echoed literally
+ * tty_setlitecho() Turn on/off literal echo of control chars
+ * tty_tspeed(val) Set transmit speed to val.
+ * tty_rspeed(val) Set receive speed to val.
+ */
+
+ int
+tty_flowmode()
+{
+#ifndef USE_TERMIO
+ return(((termbuf.tc.t_startc) > 0 && (termbuf.tc.t_stopc) > 0) ? 1 : 0);
+#else
+ return((termbuf.c_iflag & IXON) ? 1 : 0);
+#endif
+}
+
+ int
+tty_restartany()
+{
+#ifndef USE_TERMIO
+# ifdef DECCTQ
+ return((termbuf.lflags & DECCTQ) ? 0 : 1);
+# else
+ return(-1);
+# endif
+#else
+ return((termbuf.c_iflag & IXANY) ? 1 : 0);
+#endif
+}
+
+#ifdef convex
+static int linestate;
+#endif
+
+ int
+tty_linemode()
+{
+#ifndef convex
+#ifndef USE_TERMIO
+ return(termbuf.state & TS_EXTPROC);
+#else
+ return(termbuf.c_lflag & EXTPROC);
+#endif
+#else
+ return(linestate);
+#endif
+}
+
+ void
+tty_setlinemode(on)
+ int on;
+{
+#ifdef TIOCEXT
+# ifndef convex
+ set_termbuf();
+# else
+ linestate = on;
+# endif
+ (void) ioctl(pty, TIOCEXT, (char *)&on);
+# ifndef convex
+ init_termbuf();
+# endif
+#else /* !TIOCEXT */
+# ifdef EXTPROC
+ if (on)
+ termbuf.c_lflag |= EXTPROC;
+ else
+ termbuf.c_lflag &= ~EXTPROC;
+# endif
+#endif /* TIOCEXT */
+}
+
+ int
+tty_isecho()
+{
+#ifndef USE_TERMIO
+ return (termbuf.sg.sg_flags & ECHO);
+#else
+ return (termbuf.c_lflag & ECHO);
+#endif
+}
+#endif /* LINEMODE */
+
+ void
+tty_setecho(on)
+ int on;
+{
+#ifndef USE_TERMIO
+ if (on)
+ termbuf.sg.sg_flags |= ECHO|CRMOD;
+ else
+ termbuf.sg.sg_flags &= ~(ECHO|CRMOD);
+#else
+ if (on)
+ termbuf.c_lflag |= ECHO;
+ else
+ termbuf.c_lflag &= ~ECHO;
+#endif
+}
+
+#if defined(LINEMODE) && defined(KLUDGELINEMODE)
+ int
+tty_israw()
+{
+#ifndef USE_TERMIO
+ return(termbuf.sg.sg_flags & RAW);
+#else
+ return(!(termbuf.c_lflag & ICANON));
+#endif
+}
+#endif /* defined(LINEMODE) && defined(KLUDGELINEMODE) */
+
+ void
+tty_binaryin(on)
+ int on;
+{
+#ifndef USE_TERMIO
+ if (on)
+ termbuf.lflags |= LPASS8;
+ else
+ termbuf.lflags &= ~LPASS8;
+#else
+ if (on) {
+ termbuf.c_iflag &= ~ISTRIP;
+ } else {
+ termbuf.c_iflag |= ISTRIP;
+ }
+#endif
+}
+
+ void
+tty_binaryout(on)
+ int on;
+{
+#ifndef USE_TERMIO
+ if (on)
+ termbuf.lflags |= LLITOUT;
+ else
+ termbuf.lflags &= ~LLITOUT;
+#else
+ if (on) {
+ termbuf.c_cflag &= ~(CSIZE|PARENB);
+ termbuf.c_cflag |= CS8;
+ termbuf.c_oflag &= ~OPOST;
+ } else {
+ termbuf.c_cflag &= ~CSIZE;
+ termbuf.c_cflag |= CS7|PARENB;
+ termbuf.c_oflag |= OPOST;
+ }
+#endif
+}
+
+ int
+tty_isbinaryin()
+{
+#ifndef USE_TERMIO
+ return(termbuf.lflags & LPASS8);
+#else
+ return(!(termbuf.c_iflag & ISTRIP));
+#endif
+}
+
+ int
+tty_isbinaryout()
+{
+#ifndef USE_TERMIO
+ return(termbuf.lflags & LLITOUT);
+#else
+ return(!(termbuf.c_oflag&OPOST));
+#endif
+}
+
+#ifdef LINEMODE
+ int
+tty_isediting()
+{
+#ifndef USE_TERMIO
+ return(!(termbuf.sg.sg_flags & (CBREAK|RAW)));
+#else
+ return(termbuf.c_lflag & ICANON);
+#endif
+}
+
+ int
+tty_istrapsig()
+{
+#ifndef USE_TERMIO
+ return(!(termbuf.sg.sg_flags&RAW));
+#else
+ return(termbuf.c_lflag & ISIG);
+#endif
+}
+
+ void
+tty_setedit(on)
+ int on;
+{
+#ifndef USE_TERMIO
+ if (on)
+ termbuf.sg.sg_flags &= ~CBREAK;
+ else
+ termbuf.sg.sg_flags |= CBREAK;
+#else
+ if (on)
+ termbuf.c_lflag |= ICANON;
+ else
+ termbuf.c_lflag &= ~ICANON;
+#endif
+}
+
+ void
+tty_setsig(on)
+ int on;
+{
+#ifndef USE_TERMIO
+ if (on)
+ ;
+#else
+ if (on)
+ termbuf.c_lflag |= ISIG;
+ else
+ termbuf.c_lflag &= ~ISIG;
+#endif
+}
+#endif /* LINEMODE */
+
+ int
+tty_issofttab()
+{
+#ifndef USE_TERMIO
+ return (termbuf.sg.sg_flags & XTABS);
+#else
+# ifdef OXTABS
+ return (termbuf.c_oflag & OXTABS);
+# endif
+# ifdef TABDLY
+ return ((termbuf.c_oflag & TABDLY) == TAB3);
+# endif
+#endif
+}
+
+ void
+tty_setsofttab(on)
+ int on;
+{
+#ifndef USE_TERMIO
+ if (on)
+ termbuf.sg.sg_flags |= XTABS;
+ else
+ termbuf.sg.sg_flags &= ~XTABS;
+#else
+ if (on) {
+# ifdef OXTABS
+ termbuf.c_oflag |= OXTABS;
+# endif
+# ifdef TABDLY
+ termbuf.c_oflag &= ~TABDLY;
+ termbuf.c_oflag |= TAB3;
+# endif
+ } else {
+# ifdef OXTABS
+ termbuf.c_oflag &= ~OXTABS;
+# endif
+# ifdef TABDLY
+ termbuf.c_oflag &= ~TABDLY;
+ termbuf.c_oflag |= TAB0;
+# endif
+ }
+#endif
+}
+
+ int
+tty_islitecho()
+{
+#ifndef USE_TERMIO
+ return (!(termbuf.lflags & LCTLECH));
+#else
+# ifdef ECHOCTL
+ return (!(termbuf.c_lflag & ECHOCTL));
+# endif
+# ifdef TCTLECH
+ return (!(termbuf.c_lflag & TCTLECH));
+# endif
+# if !defined(ECHOCTL) && !defined(TCTLECH)
+ return (0); /* assumes ctl chars are echoed '^x' */
+# endif
+#endif
+}
+
+ void
+tty_setlitecho(on)
+ int on;
+{
+#ifndef USE_TERMIO
+ if (on)
+ termbuf.lflags &= ~LCTLECH;
+ else
+ termbuf.lflags |= LCTLECH;
+#else
+# ifdef ECHOCTL
+ if (on)
+ termbuf.c_lflag &= ~ECHOCTL;
+ else
+ termbuf.c_lflag |= ECHOCTL;
+# endif
+# ifdef TCTLECH
+ if (on)
+ termbuf.c_lflag &= ~TCTLECH;
+ else
+ termbuf.c_lflag |= TCTLECH;
+# endif
+#endif
+}
+
+ int
+tty_iscrnl()
+{
+#ifndef USE_TERMIO
+ return (termbuf.sg.sg_flags & CRMOD);
+#else
+ return (termbuf.c_iflag & ICRNL);
+#endif
+}
+
+/*
+ * A table of available terminal speeds
+ */
+struct termspeeds {
+ int speed;
+ int value;
+} termspeeds[] = {
+ { 0, B0 }, { 50, B50 }, { 75, B75 },
+ { 110, B110 }, { 134, B134 }, { 150, B150 },
+ { 200, B200 }, { 300, B300 }, { 600, B600 },
+ { 1200, B1200 }, { 1800, B1800 }, { 2400, B2400 },
+ { 4800, B4800 }, { 9600, B9600 }, { 19200, B9600 },
+ { 38400, B9600 }, { -1, B9600 }
+};
+
+ void
+tty_tspeed(val)
+ int val;
+{
+ register struct termspeeds *tp;
+
+ for (tp = termspeeds; (tp->speed != -1) && (val > tp->speed); tp++)
+ ;
+ cfsetospeed(&termbuf, tp->value);
+}
+
+ void
+tty_rspeed(val)
+ int val;
+{
+ register struct termspeeds *tp;
+
+ for (tp = termspeeds; (tp->speed != -1) && (val > tp->speed); tp++)
+ ;
+ cfsetispeed(&termbuf, tp->value);
+}
+
+#if defined(CRAY2) && defined(UNICOS5)
+ int
+tty_isnewmap()
+{
+ return((termbuf.c_oflag & OPOST) && (termbuf.c_oflag & ONLCR) &&
+ !(termbuf.c_oflag & ONLRET));
+}
+#endif
+
+#ifdef CRAY
+# ifndef NEWINIT
+extern struct utmp wtmp;
+extern char wtmpf[];
+# else /* NEWINIT */
+int gotalarm;
+
+ /* ARGSUSED */
+ void
+nologinproc(sig)
+ int sig;
+{
+ gotalarm++;
+}
+# endif /* NEWINIT */
+#endif /* CRAY */
+
+#ifndef NEWINIT
+# ifdef CRAY
+extern void utmp_sig_init P((void));
+extern void utmp_sig_reset P((void));
+extern void utmp_sig_wait P((void));
+extern void utmp_sig_notify P((int));
+# endif
+#endif
+
+/*
+ * getptyslave()
+ *
+ * Open the slave side of the pty, and do any initialization
+ * that is necessary. The return value is a file descriptor
+ * for the slave side.
+ */
+ int
+getptyslave()
+{
+ register int t = -1;
+
+#if !defined(CRAY) || !defined(NEWINIT)
+# ifdef LINEMODE
+ int waslm;
+# endif
+# ifdef TIOCGWINSZ
+ struct winsize ws;
+ extern int def_row, def_col;
+# endif
+ extern int def_tspeed, def_rspeed;
+ /*
+ * Opening the slave side may cause initilization of the
+ * kernel tty structure. We need remember the state of
+ * if linemode was turned on
+ * terminal window size
+ * terminal speed
+ * so that we can re-set them if we need to.
+ */
+# ifdef LINEMODE
+ waslm = tty_linemode();
+# endif
+
+
+ /*
+ * Make sure that we don't have a controlling tty, and
+ * that we are the session (process group) leader.
+ */
+# ifdef TIOCNOTTY
+ t = open(_PATH_TTY, O_RDWR);
+ if (t >= 0) {
+ (void) ioctl(t, TIOCNOTTY, (char *)0);
+ (void) close(t);
+ }
+# endif
+
+
+# ifdef CRAY
+ /*
+ * Wait for our parent to get the utmp stuff to get done.
+ */
+ utmp_sig_wait();
+# endif
+
+ t = cleanopen(line);
+ if (t < 0)
+ fatalperror(net, line);
+
+#ifdef STREAMSPTY
+#ifdef USE_TERMIO
+ ttyfd = t;
+#endif
+ if (ioctl(t, I_PUSH, "ptem") < 0)
+ fatal(net, "I_PUSH ptem");
+ if (ioctl(t, I_PUSH, "ldterm") < 0)
+ fatal(net, "I_PUSH ldterm");
+ if (ioctl(t, I_PUSH, "ttcompat") < 0)
+ fatal(net, "I_PUSH ttcompat");
+ if (ioctl(pty, I_PUSH, "pckt") < 0)
+ fatal(net, "I_PUSH pckt");
+#endif
+
+ /*
+ * set up the tty modes as we like them to be.
+ */
+ init_termbuf();
+# ifdef TIOCGWINSZ
+ if (def_row || def_col) {
+ bzero((char *)&ws, sizeof(ws));
+ ws.ws_col = def_col;
+ ws.ws_row = def_row;
+ (void)ioctl(t, TIOCSWINSZ, (char *)&ws);
+ }
+# endif
+
+ /*
+ * Settings for sgtty based systems
+ */
+# ifndef USE_TERMIO
+ termbuf.sg.sg_flags |= CRMOD|ANYP|ECHO|XTABS;
+# endif /* USE_TERMIO */
+
+ /*
+ * Settings for UNICOS
+ */
+# ifdef CRAY
+ termbuf.c_oflag = OPOST|ONLCR|TAB3;
+ termbuf.c_iflag = IGNPAR|ISTRIP|ICRNL|IXON;
+ termbuf.c_lflag = ISIG|ICANON|ECHO|ECHOE|ECHOK;
+ termbuf.c_cflag = EXTB|HUPCL|CS8;
+# endif
+
+ /*
+ * Settings for all other termios/termio based
+ * systems, other than 4.4BSD. In 4.4BSD the
+ * kernel does the initial terminal setup.
+ */
+# if defined(USE_TERMIO) && !defined(CRAY) && (BSD <= 43)
+# ifndef OXTABS
+# define OXTABS 0
+# endif
+ termbuf.c_lflag |= ECHO;
+ termbuf.c_oflag |= ONLCR|OXTABS;
+ termbuf.c_iflag |= ICRNL;
+ termbuf.c_iflag &= ~IXOFF;
+# endif /* defined(USE_TERMIO) && !defined(CRAY) && (BSD <= 43) */
+ tty_rspeed((def_rspeed > 0) ? def_rspeed : 9600);
+ tty_tspeed((def_tspeed > 0) ? def_tspeed : 9600);
+# ifdef LINEMODE
+ if (waslm)
+ tty_setlinemode(1);
+# endif /* LINEMODE */
+
+ /*
+ * Set the tty modes, and make this our controlling tty.
+ */
+ set_termbuf();
+ if (login_tty(t) == -1)
+ fatalperror(net, "login_tty");
+#endif /* !defined(CRAY) || !defined(NEWINIT) */
+ if (net > 2)
+ (void) close(net);
+ if (pty > 2)
+ (void) close(pty);
+}
+
+#if !defined(CRAY) || !defined(NEWINIT)
+#ifndef O_NOCTTY
+#define O_NOCTTY 0
+#endif
+/*
+ * Open the specified slave side of the pty,
+ * making sure that we have a clean tty.
+ */
+ int
+cleanopen(line)
+ char *line;
+{
+ register int t;
+#if defined(_SC_CRAY_SECURE_SYS)
+ struct secstat secbuf;
+#endif /* _SC_CRAY_SECURE_SYS */
+
+#ifndef STREAMSPTY
+ /*
+ * Make sure that other people can't open the
+ * slave side of the connection.
+ */
+ (void) chown(line, 0, 0);
+ (void) chmod(line, 0600);
+#endif
+
+# if !defined(CRAY) && (BSD > 43)
+ (void) revoke(line);
+# endif
+#if defined(_SC_CRAY_SECURE_SYS)
+ if (secflag) {
+ if (secstat(line, &secbuf) < 0)
+ return(-1);
+ if (setulvl(secbuf.st_slevel) < 0)
+ return(-1);
+ if (setucmp(secbuf.st_compart) < 0)
+ return(-1);
+ }
+#endif /* _SC_CRAY_SECURE_SYS */
+
+ t = open(line, O_RDWR|O_NOCTTY);
+
+#if defined(_SC_CRAY_SECURE_SYS)
+ if (secflag) {
+ if (setulvl(sysv.sy_minlvl) < 0)
+ return(-1);
+ if (setucmp(0) < 0)
+ return(-1);
+ }
+#endif /* _SC_CRAY_SECURE_SYS */
+
+ if (t < 0)
+ return(-1);
+
+ /*
+ * Hangup anybody else using this ttyp, then reopen it for
+ * ourselves.
+ */
+# if !defined(CRAY) && (BSD <= 43) && !defined(STREAMSPTY)
+ (void) signal(SIGHUP, SIG_IGN);
+ vhangup();
+ (void) signal(SIGHUP, SIG_DFL);
+ t = open(line, O_RDWR|O_NOCTTY);
+ if (t < 0)
+ return(-1);
+# endif
+# if defined(CRAY) && defined(TCVHUP)
+ {
+ register int i;
+ (void) signal(SIGHUP, SIG_IGN);
+ (void) ioctl(t, TCVHUP, (char *)0);
+ (void) signal(SIGHUP, SIG_DFL);
+ setpgrp();
+
+#if defined(_SC_CRAY_SECURE_SYS)
+ if (secflag) {
+ if (secstat(line, &secbuf) < 0)
+ return(-1);
+ if (setulvl(secbuf.st_slevel) < 0)
+ return(-1);
+ if (setucmp(secbuf.st_compart) < 0)
+ return(-1);
+ }
+#endif /* _SC_CRAY_SECURE_SYS */
+
+ i = open(line, O_RDWR);
+
+#if defined(_SC_CRAY_SECURE_SYS)
+ if (secflag) {
+ if (setulvl(sysv.sy_minlvl) < 0)
+ return(-1);
+ if (setucmp(0) < 0)
+ return(-1);
+ }
+#endif /* _SC_CRAY_SECURE_SYS */
+
+ if (i < 0)
+ return(-1);
+ (void) close(t);
+ t = i;
+ }
+# endif /* defined(CRAY) && defined(TCVHUP) */
+ return(t);
+}
+#endif /* !defined(CRAY) || !defined(NEWINIT) */
+
+#if BSD <= 43
+ int
+login_tty(t)
+ int t;
+{
+ if (setsid() < 0)
+ fatalperror(net, "setsid()");
+# ifdef TIOCSCTTY
+ if (ioctl(t, TIOCSCTTY, (char *)0) < 0)
+ fatalperror(net, "ioctl(sctty)");
+# if defined(CRAY)
+ /*
+ * Close the hard fd to /dev/ttypXXX, and re-open through
+ * the indirect /dev/tty interface.
+ */
+ close(t);
+ if ((t = open("/dev/tty", O_RDWR)) < 0)
+ fatalperror(net, "open(/dev/tty)");
+# endif
+# else
+ close(open(line, O_RDWR));
+# endif
+ if (t != 0)
+ (void) dup2(t, 0);
+ if (t != 1)
+ (void) dup2(t, 1);
+ if (t != 2)
+ (void) dup2(t, 2);
+ if (t > 2)
+ close(t);
+ return(0);
+}
+#endif /* BSD <= 43 */
+
+#ifdef NEWINIT
+char *gen_id = "fe";
+#endif
+
+/*
+ * startslave(host)
+ *
+ * Given a hostname, do whatever
+ * is necessary to startup the login process on the slave side of the pty.
+ */
+
+/* ARGSUSED */
+ void
+startslave(host, autologin, autoname)
+ char *host;
+ int autologin;
+ char *autoname;
+{
+ register int i;
+ long time();
+ char name[256];
+#ifdef NEWINIT
+ extern char *ptyip;
+ struct init_request request;
+ void nologinproc();
+ register int n;
+#endif /* NEWINIT */
+
+#if defined(AUTHENTICATION)
+ if (!autoname || !autoname[0])
+ autologin = 0;
+
+ if (autologin < auth_level) {
+ fatal(net, "Authorization failed");
+ exit(1);
+ }
+#endif
+
+#ifndef NEWINIT
+# ifdef CRAY
+ utmp_sig_init();
+# endif /* CRAY */
+
+ if ((i = fork()) < 0)
+ fatalperror(net, "fork");
+ if (i) {
+# ifdef CRAY
+ /*
+ * Cray parent will create utmp entry for child and send
+ * signal to child to tell when done. Child waits for signal
+ * before doing anything important.
+ */
+ register int pid = i;
+ void sigjob P((int));
+
+ setpgrp();
+ utmp_sig_reset(); /* reset handler to default */
+ /*
+ * Create utmp entry for child
+ */
+ (void) time(&wtmp.ut_time);
+ wtmp.ut_type = LOGIN_PROCESS;
+ wtmp.ut_pid = pid;
+ SCPYN(wtmp.ut_user, "LOGIN");
+ SCPYN(wtmp.ut_host, host);
+ SCPYN(wtmp.ut_line, line + sizeof("/dev/") - 1);
+ SCPYN(wtmp.ut_id, wtmp.ut_line+3);
+ pututline(&wtmp);
+ endutent();
+ if ((i = open(wtmpf, O_WRONLY|O_APPEND)) >= 0) {
+ (void) write(i, (char *)&wtmp, sizeof(struct utmp));
+ (void) close(i);
+ }
+ (void) signal(WJSIGNAL, sigjob);
+ utmp_sig_notify(pid);
+# endif /* CRAY */
+ } else {
+ getptyslave();
+ start_login(host, autologin, autoname);
+ /*NOTREACHED*/
+ }
+#else /* NEWINIT */
+
+ /*
+ * Init will start up login process if we ask nicely. We only wait
+ * for it to start up and begin normal telnet operation.
+ */
+ if ((i = open(INIT_FIFO, O_WRONLY)) < 0) {
+ char tbuf[128];
+ (void) sprintf(tbuf, "Can't open %s\n", INIT_FIFO);
+ fatalperror(net, tbuf);
+ }
+ memset((char *)&request, 0, sizeof(request));
+ request.magic = INIT_MAGIC;
+ SCPYN(request.gen_id, gen_id);
+ SCPYN(request.tty_id, &line[8]);
+ SCPYN(request.host, host);
+ SCPYN(request.term_type, terminaltype ? terminaltype : "network");
+#if !defined(UNICOS5)
+ request.signal = SIGCLD;
+ request.pid = getpid();
+#endif
+#ifdef BFTPDAEMON
+ /*
+ * Are we working as the bftp daemon?
+ */
+ if (bftpd) {
+ SCPYN(request.exec_name, BFTPPATH);
+ }
+#endif /* BFTPDAEMON */
+ if (write(i, (char *)&request, sizeof(request)) < 0) {
+ char tbuf[128];
+ (void) sprintf(tbuf, "Can't write to %s\n", INIT_FIFO);
+ fatalperror(net, tbuf);
+ }
+ (void) close(i);
+ (void) signal(SIGALRM, nologinproc);
+ for (i = 0; ; i++) {
+ char tbuf[128];
+ alarm(15);
+ n = read(pty, ptyip, BUFSIZ);
+ if (i == 3 || n >= 0 || !gotalarm)
+ break;
+ gotalarm = 0;
+ sprintf(tbuf, "telnetd: waiting for /etc/init to start login process on %s\r\n", line);
+ (void) write(net, tbuf, strlen(tbuf));
+ }
+ if (n < 0 && gotalarm)
+ fatal(net, "/etc/init didn't start login process");
+ pcc += n;
+ alarm(0);
+ (void) signal(SIGALRM, SIG_DFL);
+
+ return;
+#endif /* NEWINIT */
+}
+
+char *envinit[3];
+extern char **environ;
+
+ void
+init_env()
+{
+ extern char *getenv();
+ char **envp;
+
+ envp = envinit;
+ if (*envp = getenv("TZ"))
+ *envp++ -= 3;
+#ifdef CRAY
+ else
+ *envp++ = "TZ=GMT0";
+#endif
+ *envp = 0;
+ environ = envinit;
+}
+
+#ifndef NEWINIT
+
+/*
+ * start_login(host)
+ *
+ * Assuming that we are now running as a child processes, this
+ * function will turn us into the login process.
+ */
+
+ void
+start_login(host, autologin, name)
+ char *host;
+ int autologin;
+ char *name;
+{
+ register char *cp;
+ register char **argv;
+ char **addarg();
+#ifdef UTMPX
+ register int pid = getpid();
+ struct utmpx utmpx;
+#endif
+#ifdef __svr4__
+ char *term;
+ char termbuf[64];
+#endif
+
+#ifdef UTMPX
+ /*
+ * Create utmp entry for child
+ */
+
+ bzero(&utmpx, sizeof(utmpx));
+ SCPYN(utmpx.ut_user, ".telnet");
+ SCPYN(utmpx.ut_line, line + sizeof("/dev/") - 1);
+ utmpx.ut_pid = pid;
+ utmpx.ut_id[0] = 't';
+ utmpx.ut_id[1] = 'n';
+ utmpx.ut_id[2] = SC_WILDC;
+ utmpx.ut_id[3] = SC_WILDC;
+ utmpx.ut_type = LOGIN_PROCESS;
+ (void) time(&utmpx.ut_tv.tv_sec);
+ if (makeutx(&utmpx) == NULL)
+ fatal(net, "makeutx failed");
+#endif
+
+ /*
+ * -h : pass on name of host.
+ * WARNING: -h is accepted by login if and only if
+ * getuid() == 0.
+ * -p : don't clobber the environment (so terminal type stays set).
+ *
+ * -f : force this login, he has already been authenticated
+ */
+ argv = addarg(0, "login");
+ argv = addarg(argv, "-h");
+ argv = addarg(argv, host);
+#ifdef __svr4__
+ /*
+ * SVR4 version of -h takes TERM= as second arg, or -
+ */
+ term = getenv("TERM");
+ if (term == NULL || term[0] == 0) {
+ term = "-";
+ } else {
+ strcpy(termbuf, "TERM=");
+ strncat(termbuf, term, sizeof(termbuf) - 6);
+ term = termbuf;
+ }
+ argv = addarg(argv, term);
+#endif
+#if !defined(NO_LOGIN_P)
+ argv = addarg(argv, "-p");
+#endif
+#ifdef BFTPDAEMON
+ /*
+ * Are we working as the bftp daemon? If so, then ask login
+ * to start bftp instead of shell.
+ */
+ if (bftpd) {
+ argv = addarg(argv, "-e");
+ argv = addarg(argv, BFTPPATH);
+ } else
+#endif
+#if defined (SecurID)
+ /*
+ * don't worry about the -f that might get sent.
+ * A -s is supposed to override it anyhow.
+ */
+ if (require_SecurID)
+ argv = addarg(argv, "-s");
+#endif
+#if defined (AUTHENTICATION)
+ if (auth_level >= 0 && autologin == AUTH_VALID) {
+# if !defined(NO_LOGIN_F)
+ argv = addarg(argv, "-f");
+# endif
+ argv = addarg(argv, name);
+ } else
+#endif
+ if (getenv("USER")) {
+ argv = addarg(argv, getenv("USER"));
+#if defined(CRAY) && defined(NO_LOGIN_P)
+ {
+ register char **cpp;
+ for (cpp = environ; *cpp; cpp++)
+ argv = addarg(argv, *cpp);
+ }
+#endif
+ /*
+ * Assume that login will set the USER variable
+ * correctly. For SysV systems, this means that
+ * USER will no longer be set, just LOGNAME by
+ * login. (The problem is that if the auto-login
+ * fails, and the user then specifies a different
+ * account name, he can get logged in with both
+ * LOGNAME and USER in his environment, but the
+ * USER value will be wrong.
+ */
+ unsetenv("USER");
+ }
+ closelog();
+ execv(_PATH_LOGIN, argv);
+
+ syslog(LOG_ERR, "%s: %m\n", _PATH_LOGIN);
+ fatalperror(net, _PATH_LOGIN);
+ /*NOTREACHED*/
+}
+
+ char **
+addarg(argv, val)
+ register char **argv;
+ register char *val;
+{
+ register char **cpp;
+
+ if (argv == NULL) {
+ /*
+ * 10 entries, a leading length, and a null
+ */
+ argv = (char **)malloc(sizeof(*argv) * 12);
+ if (argv == NULL)
+ return(NULL);
+ *argv++ = (char *)10;
+ *argv = (char *)0;
+ }
+ for (cpp = argv; *cpp; cpp++)
+ ;
+ if (cpp == &argv[(int)argv[-1]]) {
+ --argv;
+ *argv = (char *)((int)(*argv) + 10);
+ argv = (char **)realloc(argv, (int)(*argv) + 2);
+ if (argv == NULL)
+ return(NULL);
+ argv++;
+ cpp = &argv[(int)argv[-1] - 10];
+ }
+ *cpp++ = val;
+ *cpp = 0;
+ return(argv);
+}
+#endif /* NEWINIT */
+
+/*
+ * cleanup()
+ *
+ * This is the routine to call when we are all through, to
+ * clean up anything that needs to be cleaned up.
+ */
+ /* ARGSUSED */
+ void
+cleanup(sig)
+ int sig;
+{
+#ifndef CRAY
+# if (BSD > 43) || defined(convex)
+ char *p;
+
+ p = line + sizeof("/dev/") - 1;
+ if (logout(p))
+ logwtmp(p, "", "");
+ (void)chmod(line, 0666);
+ (void)chown(line, 0, 0);
+ *p = 'p';
+ (void)chmod(line, 0666);
+ (void)chown(line, 0, 0);
+ (void) shutdown(net, 2);
+ exit(1);
+# else
+ void rmut();
+
+ rmut();
+ vhangup(); /* XXX */
+ (void) shutdown(net, 2);
+ exit(1);
+# endif
+#else /* CRAY */
+# ifdef NEWINIT
+ (void) shutdown(net, 2);
+ exit(1);
+# else /* NEWINIT */
+ static int incleanup = 0;
+ register int t;
+
+ /*
+ * 1: Pick up the zombie, if we are being called
+ * as the signal handler.
+ * 2: If we are a nested cleanup(), return.
+ * 3: Try to clean up TMPDIR.
+ * 4: Fill in utmp with shutdown of process.
+ * 5: Close down the network and pty connections.
+ * 6: Finish up the TMPDIR cleanup, if needed.
+ */
+ if (sig == SIGCHLD)
+ while (waitpid(-1, 0, WNOHANG) > 0)
+ ; /* VOID */
+ t = sigblock(sigmask(SIGCHLD));
+ if (incleanup) {
+ sigsetmask(t);
+ return;
+ }
+ incleanup = 1;
+ sigsetmask(t);
+
+ t = cleantmp(&wtmp);
+ setutent(); /* just to make sure */
+ rmut(line);
+ close(pty);
+ (void) shutdown(net, 2);
+ if (t == 0)
+ cleantmp(&wtmp);
+ exit(1);
+# endif /* NEWINT */
+#endif /* CRAY */
+}
+
+#if defined(CRAY) && !defined(NEWINIT)
+/*
+ * _utmp_sig_rcv
+ * utmp_sig_init
+ * utmp_sig_wait
+ * These three functions are used to coordinate the handling of
+ * the utmp file between the server and the soon-to-be-login shell.
+ * The server actually creates the utmp structure, the child calls
+ * utmp_sig_wait(), until the server calls utmp_sig_notify() and
+ * signals the future-login shell to proceed.
+ */
+static int caught=0; /* NZ when signal intercepted */
+static void (*func)(); /* address of previous handler */
+
+ void
+_utmp_sig_rcv(sig)
+ int sig;
+{
+ caught = 1;
+ (void) signal(SIGUSR1, func);
+}
+
+ void
+utmp_sig_init()
+{
+ /*
+ * register signal handler for UTMP creation
+ */
+ if ((int)(func = signal(SIGUSR1, _utmp_sig_rcv)) == -1)
+ fatalperror(net, "telnetd/signal");
+}
+
+ void
+utmp_sig_reset()
+{
+ (void) signal(SIGUSR1, func); /* reset handler to default */
+}
+
+ void
+utmp_sig_wait()
+{
+ /*
+ * Wait for parent to write our utmp entry.
+ */
+ sigoff();
+ while (caught == 0) {
+ pause(); /* wait until we get a signal (sigon) */
+ sigoff(); /* turn off signals while we check caught */
+ }
+ sigon(); /* turn on signals again */
+}
+
+ void
+utmp_sig_notify(pid)
+{
+ kill(pid, SIGUSR1);
+}
+
+static int gotsigjob = 0;
+
+ /*ARGSUSED*/
+ void
+sigjob(sig)
+ int sig;
+{
+ register int jid;
+ register struct jobtemp *jp;
+
+ while ((jid = waitjob(NULL)) != -1) {
+ if (jid == 0) {
+ return;
+ }
+ gotsigjob++;
+ jobend(jid, NULL, NULL);
+ }
+}
+
+/*
+ * Clean up the TMPDIR that login created.
+ * The first time this is called we pick up the info
+ * from the utmp. If the job has already gone away,
+ * then we'll clean up and be done. If not, then
+ * when this is called the second time it will wait
+ * for the signal that the job is done.
+ */
+ int
+cleantmp(wtp)
+ register struct utmp *wtp;
+{
+ struct utmp *utp;
+ static int first = 1;
+ register int mask, omask, ret;
+ extern struct utmp *getutid P((struct utmp *));
+
+ mask = sigmask(WJSIGNAL);
+
+ if (first == 0) {
+ omask = sigblock(mask);
+ while (gotsigjob == 0)
+ sigpause(omask);
+ return(1);
+ }
+ first = 0;
+ setutent(); /* just to make sure */
+
+ utp = getutid(wtp);
+ if (utp == 0) {
+ syslog(LOG_ERR, "Can't get /etc/utmp entry to clean TMPDIR");
+ return(-1);
+ }
+ /*
+ * Nothing to clean up if the user shell was never started.
+ */
+ if (utp->ut_type != USER_PROCESS || utp->ut_jid == 0)
+ return(1);
+
+ /*
+ * Block the WJSIGNAL while we are in jobend().
+ */
+ omask = sigblock(mask);
+ ret = jobend(utp->ut_jid, utp->ut_tpath, utp->ut_user);
+ sigsetmask(omask);
+ return(ret);
+}
+
+ int
+jobend(jid, path, user)
+ register int jid;
+ register char *path;
+ register char *user;
+{
+ static int saved_jid = 0;
+ static char saved_path[sizeof(wtmp.ut_tpath)+1];
+ static char saved_user[sizeof(wtmp.ut_user)+1];
+
+ if (path) {
+ strncpy(saved_path, path, sizeof(wtmp.ut_tpath));
+ strncpy(saved_user, user, sizeof(wtmp.ut_user));
+ saved_path[sizeof(saved_path)] = '\0';
+ saved_user[sizeof(saved_user)] = '\0';
+ }
+ if (saved_jid == 0) {
+ saved_jid = jid;
+ return(0);
+ }
+ cleantmpdir(jid, saved_path, saved_user);
+ return(1);
+}
+
+/*
+ * Fork a child process to clean up the TMPDIR
+ */
+cleantmpdir(jid, tpath, user)
+ register int jid;
+ register char *tpath;
+ register char *user;
+{
+ switch(fork()) {
+ case -1:
+ syslog(LOG_ERR, "TMPDIR cleanup(%s): fork() failed: %m\n",
+ tpath);
+ break;
+ case 0:
+ execl(CLEANTMPCMD, CLEANTMPCMD, user, tpath, 0);
+ syslog(LOG_ERR, "TMPDIR cleanup(%s): execl(%s) failed: %m\n",
+ tpath, CLEANTMPCMD);
+ exit(1);
+ default:
+ /*
+ * Forget about child. We will exit, and
+ * /etc/init will pick it up.
+ */
+ break;
+ }
+}
+#endif /* defined(CRAY) && !defined(NEWINIT) */
+
+/*
+ * rmut()
+ *
+ * This is the function called by cleanup() to
+ * remove the utmp entry for this person.
+ */
+
+#ifdef UTMPX
+rmut()
+{
+ register f;
+ int found = 0;
+ struct utmp *u, *utmp;
+ int nutmp;
+ struct stat statbf;
+
+ struct utmpx *utxp, utmpx;
+
+ /*
+ * This updates the utmpx and utmp entries and make a wtmp/x entry
+ */
+
+ SCPYN(utmpx.ut_line, line + sizeof("/dev/") - 1);
+ utxp = getutxline(&utmpx);
+ if (utxp) {
+ utxp->ut_type = DEAD_PROCESS;
+ utxp->ut_exit.e_termination = 0;
+ utxp->ut_exit.e_exit = 0;
+ (void) time(&utmpx.ut_tv.tv_sec);
+ utmpx.ut_tv.tv_usec = 0;
+ modutx(utxp);
+ }
+ endutxent();
+} /* end of rmut */
+#endif
+
+#if !defined(UTMPX) && !defined(CRAY) && BSD <= 43
+ void
+rmut()
+{
+ register f;
+ int found = 0;
+ struct utmp *u, *utmp;
+ int nutmp;
+ struct stat statbf;
+
+ f = open(utmpf, O_RDWR);
+ if (f >= 0) {
+ (void) fstat(f, &statbf);
+ utmp = (struct utmp *)malloc((unsigned)statbf.st_size);
+ if (!utmp)
+ syslog(LOG_ERR, "utmp malloc failed");
+ if (statbf.st_size && utmp) {
+ nutmp = read(f, (char *)utmp, (int)statbf.st_size);
+ nutmp /= sizeof(struct utmp);
+
+ for (u = utmp ; u < &utmp[nutmp] ; u++) {
+ if (SCMPN(u->ut_line, line+5) ||
+ u->ut_name[0]==0)
+ continue;
+ (void) lseek(f, ((long)u)-((long)utmp), L_SET);
+ SCPYN(u->ut_name, "");
+ SCPYN(u->ut_host, "");
+ (void) time(&u->ut_time);
+ (void) write(f, (char *)u, sizeof(wtmp));
+ found++;
+ }
+ }
+ (void) close(f);
+ }
+ if (found) {
+ f = open(wtmpf, O_WRONLY|O_APPEND);
+ if (f >= 0) {
+ SCPYN(wtmp.ut_line, line+5);
+ SCPYN(wtmp.ut_name, "");
+ SCPYN(wtmp.ut_host, "");
+ (void) time(&wtmp.ut_time);
+ (void) write(f, (char *)&wtmp, sizeof(wtmp));
+ (void) close(f);
+ }
+ }
+ (void) chmod(line, 0666);
+ (void) chown(line, 0, 0);
+ line[strlen("/dev/")] = 'p';
+ (void) chmod(line, 0666);
+ (void) chown(line, 0, 0);
+} /* end of rmut */
+#endif /* CRAY */
--- /dev/null
+/*
+ * Copyright (c) 1989 Regents of the University of California.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef lint
+char copyright[] =
+"@(#) Copyright (c) 1989 Regents of the University of California.\n\
+ All rights reserved.\n";
+#endif /* not lint */
+
+#ifndef lint
+static char sccsid[] = "@(#)telnetd.c 5.51 (Berkeley) 1/21/93";
+#endif /* not lint */
+
+#include "telnetd.h"
+#include "pathnames.h"
+
+#if defined(_SC_CRAY_SECURE_SYS)
+#include <sys/sysv.h>
+#include <sys/secdev.h>
+int secflag;
+char tty_dev[16];
+struct secdev dv;
+struct sysv sysv;
+struct socket_security ss;
+#endif /* _SC_CRAY_SECURE_SYS */
+
+#if defined(AUTHENTICATION)
+#include <libtelnet/auth.h>
+int auth_level = 0;
+#endif
+#if defined(SecurID)
+int require_SecurID = 0;
+#endif
+
+extern int utmp_len;
+int registerd_host_only = 0;
+
+#ifdef STREAMSPTY
+# include <stropts.h>
+# include <termio.h>
+/* make sure we don't get the bsd version */
+# include "/usr/include/sys/tty.h"
+# include <sys/ptyvar.h>
+
+/*
+ * Because of the way ptyibuf is used with streams messages, we need
+ * ptyibuf+1 to be on a full-word boundary. The following wierdness
+ * is simply to make that happen.
+ */
+char ptyibufbuf[BUFSIZ+4];
+char *ptyibuf = ptyibufbuf+3;
+char *ptyip = ptyibufbuf+3;
+char ptyibuf2[BUFSIZ];
+unsigned char ctlbuf[BUFSIZ];
+struct strbuf strbufc, strbufd;
+
+int readstream();
+
+#else /* ! STREAMPTY */
+
+/*
+ * I/O data buffers,
+ * pointers, and counters.
+ */
+char ptyibuf[BUFSIZ], *ptyip = ptyibuf;
+char ptyibuf2[BUFSIZ];
+
+#endif /* ! STREAMPTY */
+
+int hostinfo = 1; /* do we print login banner? */
+
+#ifdef CRAY
+extern int newmap; /* nonzero if \n maps to ^M^J */
+int lowpty = 0, highpty; /* low, high pty numbers */
+#endif /* CRAY */
+
+int debug = 0;
+int keepalive = 1;
+char *progname;
+
+extern void usage P((void));
+
+main(argc, argv)
+ char *argv[];
+{
+ struct sockaddr_in from;
+ int on = 1, fromlen;
+ register int ch;
+ extern char *optarg;
+ extern int optind;
+#if defined(IPPROTO_IP) && defined(IP_TOS)
+ int tos = -1;
+#endif
+
+ pfrontp = pbackp = ptyobuf;
+ netip = netibuf;
+ nfrontp = nbackp = netobuf;
+#if defined(ENCRYPTION)
+ nclearto = 0;
+#endif
+
+ progname = *argv;
+
+#ifdef CRAY
+ /*
+ * Get number of pty's before trying to process options,
+ * which may include changing pty range.
+ */
+ highpty = getnpty();
+#endif /* CRAY */
+
+ while ((ch = getopt(argc, argv, "d:a:e:klhnr:u:UI:D:B:sS:a:X:")) != EOF) {
+ switch(ch) {
+
+#ifdef AUTHENTICATION
+ case 'a':
+ /*
+ * Check for required authentication level
+ */
+ if (strcmp(optarg, "debug") == 0) {
+ extern int auth_debug_mode;
+ auth_debug_mode = 1;
+ } else if (strcasecmp(optarg, "none") == 0) {
+ auth_level = 0;
+ } else if (strcasecmp(optarg, "other") == 0) {
+ auth_level = AUTH_OTHER;
+ } else if (strcasecmp(optarg, "user") == 0) {
+ auth_level = AUTH_USER;
+ } else if (strcasecmp(optarg, "valid") == 0) {
+ auth_level = AUTH_VALID;
+ } else if (strcasecmp(optarg, "off") == 0) {
+ /*
+ * This hack turns off authentication
+ */
+ auth_level = -1;
+ } else {
+ fprintf(stderr,
+ "telnetd: unknown authorization level for -a\n");
+ }
+ break;
+#endif /* AUTHENTICATION */
+
+#ifdef BFTPDAEMON
+ case 'B':
+ bftpd++;
+ break;
+#endif /* BFTPDAEMON */
+
+ case 'd':
+ if (strcmp(optarg, "ebug") == 0) {
+ debug++;
+ break;
+ }
+ usage();
+ /* NOTREACHED */
+ break;
+
+#ifdef DIAGNOSTICS
+ case 'D':
+ /*
+ * Check for desired diagnostics capabilities.
+ */
+ if (!strcmp(optarg, "report")) {
+ diagnostic |= TD_REPORT|TD_OPTIONS;
+ } else if (!strcmp(optarg, "exercise")) {
+ diagnostic |= TD_EXERCISE;
+ } else if (!strcmp(optarg, "netdata")) {
+ diagnostic |= TD_NETDATA;
+ } else if (!strcmp(optarg, "ptydata")) {
+ diagnostic |= TD_PTYDATA;
+ } else if (!strcmp(optarg, "options")) {
+ diagnostic |= TD_OPTIONS;
+ } else {
+ usage();
+ /* NOT REACHED */
+ }
+ break;
+#endif /* DIAGNOSTICS */
+
+#ifdef ENCRYPTION
+ case 'e':
+ if (strcmp(optarg, "debug") == 0) {
+ extern int encrypt_debug_mode;
+ encrypt_debug_mode = 1;
+ break;
+ }
+ usage();
+ /* NOTREACHED */
+ break;
+#endif /* ENCRYPTION */
+
+ case 'h':
+ hostinfo = 0;
+ break;
+
+#if defined(CRAY) && defined(NEWINIT)
+ case 'I':
+ {
+ extern char *gen_id;
+ gen_id = optarg;
+ break;
+ }
+#endif /* defined(CRAY) && defined(NEWINIT) */
+
+#ifdef LINEMODE
+ case 'l':
+ alwayslinemode = 1;
+ break;
+#endif /* LINEMODE */
+
+ case 'k':
+#if defined(LINEMODE) && defined(KLUDGELINEMODE)
+ lmodetype = NO_AUTOKLUDGE;
+#else
+ /* ignore -k option if built without kludge linemode */
+#endif /* defined(LINEMODE) && defined(KLUDGELINEMODE) */
+ break;
+
+ case 'n':
+ keepalive = 0;
+ break;
+
+#ifdef CRAY
+ case 'r':
+ {
+ char *strchr();
+ char *c;
+
+ /*
+ * Allow the specification of alterations
+ * to the pty search range. It is legal to
+ * specify only one, and not change the
+ * other from its default.
+ */
+ c = strchr(optarg, '-');
+ if (c) {
+ *c++ = '\0';
+ highpty = atoi(c);
+ }
+ if (*optarg != '\0')
+ lowpty = atoi(optarg);
+ if ((lowpty > highpty) || (lowpty < 0) ||
+ (highpty > 32767)) {
+ usage();
+ /* NOT REACHED */
+ }
+ break;
+ }
+#endif /* CRAY */
+
+#ifdef SecurID
+ case 's':
+ /* SecurID required */
+ require_SecurID = 1;
+ break;
+#endif /* SecurID */
+ case 'S':
+#ifdef HAS_GETTOS
+ if ((tos = parsetos(optarg, "tcp")) < 0)
+ fprintf(stderr, "%s%s%s\n",
+ "telnetd: Bad TOS argument '", optarg,
+ "'; will try to use default TOS");
+#else
+ fprintf(stderr, "%s%s\n", "TOS option unavailable; ",
+ "-S flag not supported\n");
+#endif
+ break;
+
+ case 'u':
+ utmp_len = atoi(optarg);
+ break;
+
+ case 'U':
+ registerd_host_only = 1;
+ break;
+
+#ifdef AUTHENTICATION
+ case 'X':
+ /*
+ * Check for invalid authentication types
+ */
+ auth_disable_name(optarg);
+ break;
+#endif /* AUTHENTICATION */
+
+ default:
+ fprintf(stderr, "telnetd: %s: unknown option\n", ch);
+ /* FALLTHROUGH */
+ case '?':
+ usage();
+ /* NOTREACHED */
+ }
+ }
+
+ argc -= optind;
+ argv += optind;
+
+ if (debug) {
+ int s, ns, foo;
+ struct servent *sp;
+ static struct sockaddr_in sin = { AF_INET };
+
+ if (argc > 1) {
+ usage();
+ /* NOT REACHED */
+ } else if (argc == 1) {
+ if (sp = getservbyname(*argv, "tcp")) {
+ sin.sin_port = sp->s_port;
+ } else {
+ sin.sin_port = atoi(*argv);
+ if ((int)sin.sin_port <= 0) {
+ fprintf(stderr, "telnetd: %s: bad port #\n", *argv);
+ usage();
+ /* NOT REACHED */
+ }
+ sin.sin_port = htons((u_short)sin.sin_port);
+ }
+ } else {
+ sp = getservbyname("ktelnet", "tcp");
+ if (sp == 0) {
+ fprintf(stderr, "telnetd: tcp/ktelnet: unknown service\n");
+ exit(1);
+ }
+ sin.sin_port = sp->s_port;
+ }
+
+ s = socket(AF_INET, SOCK_STREAM, 0);
+ if (s < 0) {
+ perror("telnetd: socket");;
+ exit(1);
+ }
+ (void) setsockopt(s, SOL_SOCKET, SO_REUSEADDR,
+ (char *)&on, sizeof(on));
+ if (bind(s, (struct sockaddr *)&sin, sizeof sin) < 0) {
+ perror("bind");
+ exit(1);
+ }
+ if (listen(s, 1) < 0) {
+ perror("listen");
+ exit(1);
+ }
+ foo = sizeof sin;
+ ns = accept(s, (struct sockaddr *)&sin, &foo);
+ if (ns < 0) {
+ perror("accept");
+ exit(1);
+ }
+ (void) dup2(ns, 0);
+ (void) close(ns);
+ (void) close(s);
+#ifdef convex
+ } else if (argc == 1) {
+ ; /* VOID*/ /* Just ignore the host/port name */
+#endif
+ } else if (argc > 0) {
+ usage();
+ /* NOT REACHED */
+ }
+
+#if defined(_SC_CRAY_SECURE_SYS)
+ secflag = sysconf(_SC_CRAY_SECURE_SYS);
+
+ /*
+ * Get socket's security label
+ */
+ if (secflag) {
+ int sz = sizeof(ss);
+
+ bzero((char *)&dv, sizeof(dv));
+
+ if (getsysv(&sysv, sizeof(struct sysv)) != 0) {
+ perror("getsysv");
+ exit(1);
+ }
+
+ /*
+ * Get socket security label and set device values
+ * {security label to be set on ttyp device}
+ */
+ if (getsockopt(0, SOL_SOCKET, SO_SECURITY,
+ (char *)&ss, &sz) >= 0) {
+
+ dv.dv_actlvl = ss.ss_slevel;
+ dv.dv_actcmp = ss.ss_compart;
+ dv.dv_minlvl = ss.ss_minlvl;
+ dv.dv_maxlvl = ss.ss_maxlvl;
+ dv.dv_valcmp = ss.ss_maxcmp;
+ }
+ }
+#endif /* _SC_CRAY_SECURE_SYS */
+
+ openlog("telnetd", LOG_PID | LOG_ODELAY, LOG_DAEMON);
+ fromlen = sizeof (from);
+ if (getpeername(0, (struct sockaddr *)&from, &fromlen) < 0) {
+ fprintf(stderr, "%s: ", progname);
+ perror("getpeername");
+ _exit(1);
+ }
+ if (keepalive &&
+ setsockopt(0, SOL_SOCKET, SO_KEEPALIVE,
+ (char *)&on, sizeof (on)) < 0) {
+ syslog(LOG_WARNING, "setsockopt (SO_KEEPALIVE): %m");
+ }
+
+#if defined(IPPROTO_IP) && defined(IP_TOS)
+ {
+# if defined(HAS_GETTOS)
+ struct tosent *tp;
+ if (tos < 0 && (tp = gettosbyname("telnet", "tcp")))
+ tos = tp->t_tos;
+# endif
+ if (tos < 0)
+ tos = 020; /* Low Delay bit */
+ if (tos
+ && (setsockopt(0, IPPROTO_IP, IP_TOS,
+ (char *)&tos, sizeof(tos)) < 0)
+ && (errno != ENOPROTOOPT) )
+ syslog(LOG_WARNING, "setsockopt (IP_TOS): %m");
+ }
+#endif /* defined(IPPROTO_IP) && defined(IP_TOS) */
+ net = 0;
+ doit(&from);
+ /* NOTREACHED */
+} /* end of main */
+
+ void
+usage()
+{
+ fprintf(stderr, "Usage: telnetd");
+#ifdef AUTHENTICATION
+ fprintf(stderr, " [-a (debug|other|user|valid|off)]\n\t");
+#endif
+#ifdef BFTPDAEMON
+ fprintf(stderr, " [-B]");
+#endif
+ fprintf(stderr, " [-debug]");
+#ifdef DIAGNOSTICS
+ fprintf(stderr, " [-D (options|report|exercise|netdata|ptydata)]\n\t");
+#endif
+#ifdef AUTHENTICATION
+ fprintf(stderr, " [-edebug]");
+#endif
+ fprintf(stderr, " [-h]");
+#if defined(CRAY) && defined(NEWINIT)
+ fprintf(stderr, " [-Iinitid]");
+#endif
+#ifdef LINEMODE
+ fprintf(stderr, " [-l]");
+#endif
+ fprintf(stderr, " [-n]");
+#ifdef CRAY
+ fprintf(stderr, " [-r[lowpty]-[highpty]]");
+#endif
+#ifdef SecurID
+ fprintf(stderr, " [-s]");
+#endif
+#ifdef AUTHENTICATION
+ fprintf(stderr, " [-X auth-type]");
+#endif
+ fprintf(stderr, " [-u utmp_hostname_length] [-U]");
+ fprintf(stderr, " [port]\n");
+ exit(1);
+}
+
+/*
+ * getterminaltype
+ *
+ * Ask the other end to send along its terminal type and speed.
+ * Output is the variable terminaltype filled in.
+ */
+static char ttytype_sbbuf[] = { IAC, SB, TELOPT_TTYPE, TELQUAL_SEND, IAC, SE };
+
+ int
+getterminaltype(name)
+ char *name;
+{
+ int retval = -1;
+ void _gettermname();
+
+ settimer(baseline);
+#if defined(AUTHENTICATION)
+ /*
+ * Handle the Authentication option before we do anything else.
+ */
+ send_do(TELOPT_AUTHENTICATION, 1);
+ while (his_will_wont_is_changing(TELOPT_AUTHENTICATION))
+ ttloop();
+ if (his_state_is_will(TELOPT_AUTHENTICATION)) {
+ retval = auth_wait(name);
+ }
+#endif
+
+#if defined(ENCRYPTION)
+ send_will(TELOPT_ENCRYPT, 1);
+#endif
+ send_do(TELOPT_TTYPE, 1);
+ send_do(TELOPT_TSPEED, 1);
+ send_do(TELOPT_XDISPLOC, 1);
+ send_do(TELOPT_ENVIRON, 1);
+ while (
+#if defined(ENCRYPTION)
+ his_do_dont_is_changing(TELOPT_ENCRYPT) ||
+#endif
+ his_will_wont_is_changing(TELOPT_TTYPE) ||
+ his_will_wont_is_changing(TELOPT_TSPEED) ||
+ his_will_wont_is_changing(TELOPT_XDISPLOC) ||
+ his_will_wont_is_changing(TELOPT_ENVIRON)) {
+ ttloop();
+ }
+#if defined(ENCRYPTION)
+ /*
+ * Wait for the negotiation of what type of encryption we can
+ * send with. If autoencrypt is not set, this will just return.
+ */
+ if (his_state_is_will(TELOPT_ENCRYPT)) {
+ encrypt_wait();
+ }
+#endif
+ if (his_state_is_will(TELOPT_TSPEED)) {
+ static char sbbuf[] = { IAC, SB, TELOPT_TSPEED, TELQUAL_SEND, IAC, SE };
+
+ bcopy(sbbuf, nfrontp, sizeof sbbuf);
+ nfrontp += sizeof sbbuf;
+ }
+ if (his_state_is_will(TELOPT_XDISPLOC)) {
+ static char sbbuf[] = { IAC, SB, TELOPT_XDISPLOC, TELQUAL_SEND, IAC, SE };
+
+ bcopy(sbbuf, nfrontp, sizeof sbbuf);
+ nfrontp += sizeof sbbuf;
+ }
+ if (his_state_is_will(TELOPT_ENVIRON)) {
+ static char sbbuf[] = { IAC, SB, TELOPT_ENVIRON, TELQUAL_SEND, IAC, SE };
+
+ bcopy(sbbuf, nfrontp, sizeof sbbuf);
+ nfrontp += sizeof sbbuf;
+ }
+ if (his_state_is_will(TELOPT_TTYPE)) {
+
+ bcopy(ttytype_sbbuf, nfrontp, sizeof ttytype_sbbuf);
+ nfrontp += sizeof ttytype_sbbuf;
+ }
+ if (his_state_is_will(TELOPT_TSPEED)) {
+ while (sequenceIs(tspeedsubopt, baseline))
+ ttloop();
+ }
+ if (his_state_is_will(TELOPT_XDISPLOC)) {
+ while (sequenceIs(xdisplocsubopt, baseline))
+ ttloop();
+ }
+ if (his_state_is_will(TELOPT_ENVIRON)) {
+ while (sequenceIs(environsubopt, baseline))
+ ttloop();
+ }
+ if (his_state_is_will(TELOPT_TTYPE)) {
+ char first[256], last[256];
+
+ while (sequenceIs(ttypesubopt, baseline))
+ ttloop();
+
+ /*
+ * If the other side has already disabled the option, then
+ * we have to just go with what we (might) have already gotten.
+ */
+ if (his_state_is_will(TELOPT_TTYPE) && !terminaltypeok(terminaltype)) {
+ (void) strncpy(first, terminaltype, sizeof(first));
+ for(;;) {
+ /*
+ * Save the unknown name, and request the next name.
+ */
+ (void) strncpy(last, terminaltype, sizeof(last));
+ _gettermname();
+ if (terminaltypeok(terminaltype))
+ break;
+ if ((strncmp(last, terminaltype, sizeof(last)) == 0) ||
+ his_state_is_wont(TELOPT_TTYPE)) {
+ /*
+ * We've hit the end. If this is the same as
+ * the first name, just go with it.
+ */
+ if (strncmp(first, terminaltype, sizeof(first)) == 0)
+ break;
+ /*
+ * Get the terminal name one more time, so that
+ * RFC1091 compliant telnets will cycle back to
+ * the start of the list.
+ */
+ _gettermname();
+ if (strncmp(first, terminaltype, sizeof(first)) != 0)
+ (void) strncpy(terminaltype, first, sizeof(first));
+ break;
+ }
+ }
+ }
+ }
+ return(retval);
+} /* end of getterminaltype */
+
+ void
+_gettermname()
+{
+ /*
+ * If the client turned off the option,
+ * we can't send another request, so we
+ * just return.
+ */
+ if (his_state_is_wont(TELOPT_TTYPE))
+ return;
+ settimer(baseline);
+ bcopy(ttytype_sbbuf, nfrontp, sizeof ttytype_sbbuf);
+ nfrontp += sizeof ttytype_sbbuf;
+ while (sequenceIs(ttypesubopt, baseline))
+ ttloop();
+}
+
+ int
+terminaltypeok(s)
+ char *s;
+{
+ char buf[1024];
+
+ if (terminaltype == NULL)
+ return(1);
+
+ /*
+ * tgetent() will return 1 if the type is known, and
+ * 0 if it is not known. If it returns -1, it couldn't
+ * open the database. But if we can't open the database,
+ * it won't help to say we failed, because we won't be
+ * able to verify anything else. So, we treat -1 like 1.
+ */
+ if (tgetent(buf, s) == 0)
+ return(0);
+ return(1);
+}
+
+#ifndef MAXHOSTNAMELEN
+#define MAXHOSTNAMELEN 64
+#endif /* MAXHOSTNAMELEN */
+
+char *hostname;
+char host_name[MAXHOSTNAMELEN];
+char remote_host_name[MAXHOSTNAMELEN];
+
+#ifndef convex
+extern void telnet P((int, int));
+#else
+extern void telnet P((int, int, char *));
+#endif
+
+/*
+ * Get a pty, scan input lines.
+ */
+doit(who)
+ struct sockaddr_in *who;
+{
+ char *host, *inet_ntoa();
+ int t;
+ struct hostent *hp;
+ int level;
+ char user_name[256];
+
+ /*
+ * Find an available pty to use.
+ */
+#ifndef convex
+ pty = getpty();
+ if (pty < 0)
+ fatal(net, "All network ports in use");
+#else
+ for (;;) {
+ char *lp;
+ extern char *line, *getpty();
+
+ if ((lp = getpty()) == NULL)
+ fatal(net, "Out of ptys");
+
+ if ((pty = open(lp, 2)) >= 0) {
+ strcpy(line,lp);
+ line[5] = 't';
+ break;
+ }
+ }
+#endif
+
+#if defined(_SC_CRAY_SECURE_SYS)
+ /*
+ * set ttyp line security label
+ */
+ if (secflag) {
+ extern char *myline;
+ if (setdevs(myline, &dv) < 0)
+ fatal(net, "cannot set pty security");
+ }
+#endif /* _SC_CRAY_SECURE_SYS */
+
+ /* get name of connected client */
+ hp = gethostbyaddr((char *)&who->sin_addr, sizeof (struct in_addr),
+ who->sin_family);
+
+ if (hp == NULL && registerd_host_only) {
+ fatal(net, "Couldn't resolve your address into a host name.\r\n\
+ Please contact your net administrator");
+ } else if (hp &&
+ (strlen(hp->h_name) <= ((utmp_len < 0) ? -utmp_len : utmp_len))) {
+ host = hp->h_name;
+ } else {
+ host = inet_ntoa(who->sin_addr);
+ }
+ /*
+ * We must make a copy because Kerberos is probably going
+ * to also do a gethost* and overwrite the static data...
+ */
+ strncpy(remote_host_name, host, sizeof(remote_host_name)-1);
+ remote_host_name[sizeof(remote_host_name)-1] = 0;
+ host = remote_host_name;
+
+ (void) gethostname(host_name, sizeof (host_name));
+ hostname = host_name;
+
+#if defined(AUTHENTICATION) || defined(ENCRYPTION)
+ auth_encrypt_init(hostname, host, "TELNETD", 1);
+#endif
+
+ init_env();
+ /*
+ * get terminal type.
+ */
+ *user_name = 0;
+ level = getterminaltype(user_name);
+ setenv("TERM", terminaltype ? terminaltype : "network", 1);
+
+ /*
+ * Start up the login process on the slave side of the terminal
+ */
+#ifndef convex
+ startslave(host, level, user_name);
+
+ telnet(net, pty); /* begin server processing */
+#else
+ telnet(net, pty, host);
+#endif
+ /*NOTREACHED*/
+} /* end of doit */
+
+#if defined(CRAY2) && defined(UNICOS5) && defined(UNICOS50)
+ int
+Xterm_output(ibufp, obuf, icountp, ocount)
+ char **ibufp, *obuf;
+ int *icountp, ocount;
+{
+ int ret;
+ ret = term_output(*ibufp, obuf, *icountp, ocount);
+ *ibufp += *icountp;
+ *icountp = 0;
+ return(ret);
+}
+#define term_output Xterm_output
+#endif /* defined(CRAY2) && defined(UNICOS5) && defined(UNICOS50) */
+
+/*
+ * Main loop. Select from pty and network, and
+ * hand data to telnet receiver finite state machine.
+ */
+ void
+#ifndef convex
+telnet(f, p)
+#else
+telnet(f, p, host)
+#endif
+ int f, p;
+#ifdef convex
+ char *host;
+#endif
+{
+ int on = 1;
+#define TABBUFSIZ 512
+ char defent[TABBUFSIZ];
+ char defstrs[TABBUFSIZ];
+#undef TABBUFSIZ
+ char *HE;
+ char *HN;
+ char *IM;
+ void netflush();
+
+ /*
+ * Initialize the slc mapping table.
+ */
+ get_slc_defaults();
+
+ /*
+ * Do some tests where it is desireable to wait for a response.
+ * Rather than doing them slowly, one at a time, do them all
+ * at once.
+ */
+ if (my_state_is_wont(TELOPT_SGA))
+ send_will(TELOPT_SGA, 1);
+ /*
+ * Is the client side a 4.2 (NOT 4.3) system? We need to know this
+ * because 4.2 clients are unable to deal with TCP urgent data.
+ *
+ * To find out, we send out a "DO ECHO". If the remote system
+ * answers "WILL ECHO" it is probably a 4.2 client, and we note
+ * that fact ("WILL ECHO" ==> that the client will echo what
+ * WE, the server, sends it; it does NOT mean that the client will
+ * echo the terminal input).
+ */
+ send_do(TELOPT_ECHO, 1);
+
+#ifdef LINEMODE
+ if (his_state_is_wont(TELOPT_LINEMODE)) {
+ /* Query the peer for linemode support by trying to negotiate
+ * the linemode option.
+ */
+ linemode = 0;
+ editmode = 0;
+ send_do(TELOPT_LINEMODE, 1); /* send do linemode */
+ }
+#endif /* LINEMODE */
+
+ /*
+ * Send along a couple of other options that we wish to negotiate.
+ */
+ send_do(TELOPT_NAWS, 1);
+ send_will(TELOPT_STATUS, 1);
+ flowmode = 1; /* default flow control state */
+ restartany = -1; /* uninitialized... */
+ send_do(TELOPT_LFLOW, 1);
+
+ /*
+ * Spin, waiting for a response from the DO ECHO. However,
+ * some REALLY DUMB telnets out there might not respond
+ * to the DO ECHO. So, we spin looking for NAWS, (most dumb
+ * telnets so far seem to respond with WONT for a DO that
+ * they don't understand...) because by the time we get the
+ * response, it will already have processed the DO ECHO.
+ * Kludge upon kludge.
+ */
+ while (his_will_wont_is_changing(TELOPT_NAWS))
+ ttloop();
+
+ /*
+ * But...
+ * The client might have sent a WILL NAWS as part of its
+ * startup code; if so, we'll be here before we get the
+ * response to the DO ECHO. We'll make the assumption
+ * that any implementation that understands about NAWS
+ * is a modern enough implementation that it will respond
+ * to our DO ECHO request; hence we'll do another spin
+ * waiting for the ECHO option to settle down, which is
+ * what we wanted to do in the first place...
+ */
+ if (his_want_state_is_will(TELOPT_ECHO) &&
+ his_state_is_will(TELOPT_NAWS)) {
+ while (his_will_wont_is_changing(TELOPT_ECHO))
+ ttloop();
+ }
+ /*
+ * On the off chance that the telnet client is broken and does not
+ * respond to the DO ECHO we sent, (after all, we did send the
+ * DO NAWS negotiation after the DO ECHO, and we won't get here
+ * until a response to the DO NAWS comes back) simulate the
+ * receipt of a will echo. This will also send a WONT ECHO
+ * to the client, since we assume that the client failed to
+ * respond because it believes that it is already in DO ECHO
+ * mode, which we do not want.
+ */
+ if (his_want_state_is_will(TELOPT_ECHO)) {
+ DIAG(TD_OPTIONS,
+ {sprintf(nfrontp, "td: simulating recv\r\n");
+ nfrontp += strlen(nfrontp);});
+ willoption(TELOPT_ECHO);
+ }
+
+ /*
+ * Finally, to clean things up, we turn on our echo. This
+ * will break stupid 4.2 telnets out of local terminal echo.
+ */
+
+ if (my_state_is_wont(TELOPT_ECHO))
+ send_will(TELOPT_ECHO, 1);
+
+#ifndef STREAMSPTY
+ /*
+ * Turn on packet mode
+ */
+ (void) ioctl(p, TIOCPKT, (char *)&on);
+#endif
+
+#if defined(LINEMODE) && defined(KLUDGELINEMODE)
+ /*
+ * Continuing line mode support. If client does not support
+ * real linemode, attempt to negotiate kludge linemode by sending
+ * the do timing mark sequence.
+ */
+ if (lmodetype < REAL_LINEMODE)
+ send_do(TELOPT_TM, 1);
+#endif /* defined(LINEMODE) && defined(KLUDGELINEMODE) */
+
+ /*
+ * Call telrcv() once to pick up anything received during
+ * terminal type negotiation, 4.2/4.3 determination, and
+ * linemode negotiation.
+ */
+ telrcv();
+
+ (void) ioctl(f, FIONBIO, (char *)&on);
+ (void) ioctl(p, FIONBIO, (char *)&on);
+#if defined(CRAY2) && defined(UNICOS5)
+ init_termdriver(f, p, interrupt, sendbrk);
+#endif
+
+#if defined(SO_OOBINLINE)
+ (void) setsockopt(net, SOL_SOCKET, SO_OOBINLINE,
+ (char *)&on, sizeof on);
+#endif /* defined(SO_OOBINLINE) */
+
+#ifdef SIGTSTP
+ (void) signal(SIGTSTP, SIG_IGN);
+#endif
+#ifdef SIGTTOU
+ /*
+ * Ignoring SIGTTOU keeps the kernel from blocking us
+ * in ttioct() in /sys/tty.c.
+ */
+ (void) signal(SIGTTOU, SIG_IGN);
+#endif
+
+ (void) signal(SIGCHLD, cleanup);
+
+#if defined(CRAY2) && defined(UNICOS5)
+ /*
+ * Cray-2 will send a signal when pty modes are changed by slave
+ * side. Set up signal handler now.
+ */
+ if ((int)signal(SIGUSR1, termstat) < 0)
+ perror("signal");
+ else if (ioctl(p, TCSIGME, (char *)SIGUSR1) < 0)
+ perror("ioctl:TCSIGME");
+ /*
+ * Make processing loop check terminal characteristics early on.
+ */
+ termstat();
+#endif
+
+#ifdef TIOCNOTTY
+ {
+ register int t;
+ t = open(_PATH_TTY, O_RDWR);
+ if (t >= 0) {
+ (void) ioctl(t, TIOCNOTTY, (char *)0);
+ (void) close(t);
+ }
+ }
+#endif
+
+#if defined(CRAY) && defined(NEWINIT) && defined(TIOCSCTTY)
+ (void) setsid();
+ ioctl(p, TIOCSCTTY, 0);
+#endif
+
+ /*
+ * Show banner that getty never gave.
+ *
+ * We put the banner in the pty input buffer. This way, it
+ * gets carriage return null processing, etc., just like all
+ * other pty --> client data.
+ */
+
+#if !defined(CRAY) || !defined(NEWINIT)
+ if (getenv("USER"))
+ hostinfo = 0;
+#endif
+
+ if (getent(defent, "default") == 1) {
+ char *getstr();
+ char *cp=defstrs;
+
+ HE = getstr("he", &cp);
+ HN = getstr("hn", &cp);
+ IM = getstr("im", &cp);
+ if (HN && *HN)
+ (void) strcpy(host_name, HN);
+ if (IM == 0)
+ IM = "";
+ } else {
+ IM = DEFAULT_IM;
+ HE = 0;
+ }
+ edithost(HE, host_name);
+ if (hostinfo && *IM)
+ putf(IM, ptyibuf2);
+
+ if (pcc)
+ (void) strncat(ptyibuf2, ptyip, pcc+1);
+ ptyip = ptyibuf2;
+ pcc = strlen(ptyip);
+#ifdef LINEMODE
+ /*
+ * Last check to make sure all our states are correct.
+ */
+ init_termbuf();
+ localstat();
+#endif /* LINEMODE */
+
+ DIAG(TD_REPORT,
+ {sprintf(nfrontp, "td: Entering processing loop\r\n");
+ nfrontp += strlen(nfrontp);});
+
+#ifdef convex
+ startslave(host);
+#endif
+
+ for (;;) {
+ fd_set ibits, obits, xbits;
+ register int c;
+
+ if (ncc < 0 && pcc < 0)
+ break;
+
+#if defined(CRAY2) && defined(UNICOS5)
+ if (needtermstat)
+ _termstat();
+#endif /* defined(CRAY2) && defined(UNICOS5) */
+ FD_ZERO(&ibits);
+ FD_ZERO(&obits);
+ FD_ZERO(&xbits);
+ /*
+ * Never look for input if there's still
+ * stuff in the corresponding output buffer
+ */
+ if (nfrontp - nbackp || pcc > 0) {
+ FD_SET(f, &obits);
+ } else {
+ FD_SET(p, &ibits);
+ }
+ if (pfrontp - pbackp || ncc > 0) {
+ FD_SET(p, &obits);
+ } else {
+ FD_SET(f, &ibits);
+ }
+ if (!SYNCHing) {
+ FD_SET(f, &xbits);
+ }
+ if ((c = select(16, &ibits, &obits, &xbits,
+ (struct timeval *)0)) < 1) {
+ if (c == -1) {
+ if (errno == EINTR) {
+ continue;
+ }
+ }
+ sleep(5);
+ continue;
+ }
+
+ /*
+ * Any urgent data?
+ */
+ if (FD_ISSET(net, &xbits)) {
+ SYNCHing = 1;
+ }
+
+ /*
+ * Something to read from the network...
+ */
+ if (FD_ISSET(net, &ibits)) {
+#if !defined(SO_OOBINLINE)
+ /*
+ * In 4.2 (and 4.3 beta) systems, the
+ * OOB indication and data handling in the kernel
+ * is such that if two separate TCP Urgent requests
+ * come in, one byte of TCP data will be overlaid.
+ * This is fatal for Telnet, but we try to live
+ * with it.
+ *
+ * In addition, in 4.2 (and...), a special protocol
+ * is needed to pick up the TCP Urgent data in
+ * the correct sequence.
+ *
+ * What we do is: if we think we are in urgent
+ * mode, we look to see if we are "at the mark".
+ * If we are, we do an OOB receive. If we run
+ * this twice, we will do the OOB receive twice,
+ * but the second will fail, since the second
+ * time we were "at the mark", but there wasn't
+ * any data there (the kernel doesn't reset
+ * "at the mark" until we do a normal read).
+ * Once we've read the OOB data, we go ahead
+ * and do normal reads.
+ *
+ * There is also another problem, which is that
+ * since the OOB byte we read doesn't put us
+ * out of OOB state, and since that byte is most
+ * likely the TELNET DM (data mark), we would
+ * stay in the TELNET SYNCH (SYNCHing) state.
+ * So, clocks to the rescue. If we've "just"
+ * received a DM, then we test for the
+ * presence of OOB data when the receive OOB
+ * fails (and AFTER we did the normal mode read
+ * to clear "at the mark").
+ */
+ if (SYNCHing) {
+ int atmark;
+
+ (void) ioctl(net, SIOCATMARK, (char *)&atmark);
+ if (atmark) {
+ ncc = recv(net, netibuf, sizeof (netibuf), MSG_OOB);
+ if ((ncc == -1) && (errno == EINVAL)) {
+ ncc = read(net, netibuf, sizeof (netibuf));
+ if (sequenceIs(didnetreceive, gotDM)) {
+ SYNCHing = stilloob(net);
+ }
+ }
+ } else {
+ ncc = read(net, netibuf, sizeof (netibuf));
+ }
+ } else {
+ ncc = read(net, netibuf, sizeof (netibuf));
+ }
+ settimer(didnetreceive);
+#else /* !defined(SO_OOBINLINE)) */
+ ncc = read(net, netibuf, sizeof (netibuf));
+#endif /* !defined(SO_OOBINLINE)) */
+ if (ncc < 0 && errno == EWOULDBLOCK)
+ ncc = 0;
+ else {
+ if (ncc <= 0) {
+ break;
+ }
+ netip = netibuf;
+ }
+ DIAG((TD_REPORT | TD_NETDATA),
+ {sprintf(nfrontp, "td: netread %d chars\r\n", ncc);
+ nfrontp += strlen(nfrontp);});
+ DIAG(TD_NETDATA, printdata("nd", netip, ncc));
+ }
+
+ /*
+ * Something to read from the pty...
+ */
+ if (FD_ISSET(p, &ibits)) {
+#ifndef STREAMSPTY
+ pcc = read(p, ptyibuf, BUFSIZ);
+#else
+ pcc = readstream(p, ptyibuf, BUFSIZ);
+#endif
+ /*
+ * On some systems, if we try to read something
+ * off the master side before the slave side is
+ * opened, we get EIO.
+ */
+ if (pcc < 0 && (errno == EWOULDBLOCK ||
+#ifdef EAGAIN
+ errno == EAGAIN ||
+#endif
+ errno == EIO)) {
+ pcc = 0;
+ } else {
+ if (pcc <= 0)
+ break;
+#if !defined(CRAY2) || !defined(UNICOS5)
+#ifdef LINEMODE
+ /*
+ * If ioctl from pty, pass it through net
+ */
+ if (ptyibuf[0] & TIOCPKT_IOCTL) {
+ copy_termbuf(ptyibuf+1, pcc-1);
+ localstat();
+ pcc = 1;
+ }
+#endif /* LINEMODE */
+ if (ptyibuf[0] & TIOCPKT_FLUSHWRITE) {
+ netclear(); /* clear buffer back */
+#ifndef NO_URGENT
+ /*
+ * There are client telnets on some
+ * operating systems get screwed up
+ * royally if we send them urgent
+ * mode data.
+ */
+ *nfrontp++ = IAC;
+ *nfrontp++ = DM;
+ neturg = nfrontp-1; /* off by one XXX */
+#endif
+ }
+ if (his_state_is_will(TELOPT_LFLOW) &&
+ (ptyibuf[0] &
+ (TIOCPKT_NOSTOP|TIOCPKT_DOSTOP))) {
+ int newflow =
+ ptyibuf[0] & TIOCPKT_DOSTOP ? 1 : 0;
+ if (newflow != flowmode) {
+ flowmode = newflow;
+ (void) sprintf(nfrontp,
+ "%c%c%c%c%c%c",
+ IAC, SB, TELOPT_LFLOW,
+ flowmode ? LFLOW_ON
+ : LFLOW_OFF,
+ IAC, SE);
+ nfrontp += 6;
+ }
+ }
+ pcc--;
+ ptyip = ptyibuf+1;
+#else /* defined(CRAY2) && defined(UNICOS5) */
+ if (!uselinemode) {
+ unpcc = pcc;
+ unptyip = ptyibuf;
+ pcc = term_output(&unptyip, ptyibuf2,
+ &unpcc, BUFSIZ);
+ ptyip = ptyibuf2;
+ } else
+ ptyip = ptyibuf;
+#endif /* defined(CRAY2) && defined(UNICOS5) */
+ }
+ }
+
+ while (pcc > 0) {
+ if ((&netobuf[BUFSIZ] - nfrontp) < 2)
+ break;
+ c = *ptyip++ & 0377, pcc--;
+ if (c == IAC)
+ *nfrontp++ = c;
+#if defined(CRAY2) && defined(UNICOS5)
+ else if (c == '\n' &&
+ my_state_is_wont(TELOPT_BINARY) && newmap)
+ *nfrontp++ = '\r';
+#endif /* defined(CRAY2) && defined(UNICOS5) */
+ *nfrontp++ = c;
+ if ((c == '\r') && (my_state_is_wont(TELOPT_BINARY))) {
+ if (pcc > 0 && ((*ptyip & 0377) == '\n')) {
+ *nfrontp++ = *ptyip++ & 0377;
+ pcc--;
+ } else
+ *nfrontp++ = '\0';
+ }
+ }
+#if defined(CRAY2) && defined(UNICOS5)
+ /*
+ * If chars were left over from the terminal driver,
+ * note their existence.
+ */
+ if (!uselinemode && unpcc) {
+ pcc = unpcc;
+ unpcc = 0;
+ ptyip = unptyip;
+ }
+#endif /* defined(CRAY2) && defined(UNICOS5) */
+
+ if (FD_ISSET(f, &obits) && (nfrontp - nbackp) > 0)
+ netflush();
+ if (ncc > 0)
+ telrcv();
+ if (FD_ISSET(p, &obits) && (pfrontp - pbackp) > 0)
+ ptyflush();
+ }
+ cleanup(0);
+} /* end of telnet */
+
+#ifndef TCSIG
+# ifdef TIOCSIG
+# define TCSIG TIOCSIG
+# endif
+#endif
+
+#ifdef STREAMSPTY
+
+int flowison = -1; /* current state of flow: -1 is unknown */
+
+int readstream(p, ibuf, bufsize)
+ int p;
+ char *ibuf;
+ int bufsize;
+{
+ int flags = 0;
+ int ret = 0;
+ struct termios *tsp;
+ struct termio *tp;
+ struct iocblk *ip;
+ char vstop, vstart;
+ int ixon;
+ int newflow;
+
+ strbufc.maxlen = BUFSIZ;
+ strbufc.buf = ctlbuf;
+ strbufd.maxlen = bufsize-1;
+ strbufd.len = 0;
+ strbufd.buf = ibuf+1;
+ ibuf[0] = 0;
+
+ ret = getmsg(p, &strbufc, &strbufd, &flags);
+ if (ret < 0) /* error of some sort -- probably EAGAIN */
+ return(-1);
+
+ if (strbufc.len <= 0 || ctlbuf[0] == M_DATA) {
+ /* data message */
+ if (strbufd.len > 0) { /* real data */
+ return(strbufd.len + 1); /* count header char */
+ } else {
+ /* nothing there */
+ errno = EAGAIN;
+ return(-1);
+ }
+ }
+
+ /*
+ * It's a control message. Return 1, to look at the flag we set
+ */
+
+ switch (ctlbuf[0]) {
+ case M_FLUSH:
+ if (ibuf[1] & FLUSHW)
+ ibuf[0] = TIOCPKT_FLUSHWRITE;
+ return(1);
+
+ case M_IOCTL:
+ ip = (struct iocblk *) (ibuf+1);
+
+ switch (ip->ioc_cmd) {
+ case TCSETS:
+ case TCSETSW:
+ case TCSETSF:
+ tsp = (struct termios *)
+ (ibuf+1 + sizeof(struct iocblk));
+ vstop = tsp->c_cc[VSTOP];
+ vstart = tsp->c_cc[VSTART];
+ ixon = tsp->c_iflag & IXON;
+ break;
+ case TCSETA:
+ case TCSETAW:
+ case TCSETAF:
+ tp = (struct termio *) (ibuf+1 + sizeof(struct iocblk));
+ vstop = tp->c_cc[VSTOP];
+ vstart = tp->c_cc[VSTART];
+ ixon = tp->c_iflag & IXON;
+ break;
+ default:
+ errno = EAGAIN;
+ return(-1);
+ }
+
+ newflow = (ixon && (vstart == 021) && (vstop == 023)) ? 1 : 0;
+ if (newflow != flowison) { /* it's a change */
+ flowison = newflow;
+ ibuf[0] = newflow ? TIOCPKT_DOSTOP : TIOCPKT_NOSTOP;
+ return(1);
+ }
+ }
+
+ /* nothing worth doing anything about */
+ errno = EAGAIN;
+ return(-1);
+}
+#endif /* STREAMSPTY */
+
+/*
+ * Send interrupt to process on other side of pty.
+ * If it is in raw mode, just write NULL;
+ * otherwise, write intr char.
+ */
+ void
+interrupt()
+{
+ ptyflush(); /* half-hearted */
+
+#ifdef TCSIG
+ (void) ioctl(pty, TCSIG, (char *)SIGINT);
+#else /* TCSIG */
+ init_termbuf();
+ *pfrontp++ = slctab[SLC_IP].sptr ?
+ (unsigned char)*slctab[SLC_IP].sptr : '\177';
+#endif /* TCSIG */
+}
+
+/*
+ * Send quit to process on other side of pty.
+ * If it is in raw mode, just write NULL;
+ * otherwise, write quit char.
+ */
+ void
+sendbrk()
+{
+ ptyflush(); /* half-hearted */
+#ifdef TCSIG
+ (void) ioctl(pty, TCSIG, (char *)SIGQUIT);
+#else /* TCSIG */
+ init_termbuf();
+ *pfrontp++ = slctab[SLC_ABORT].sptr ?
+ (unsigned char)*slctab[SLC_ABORT].sptr : '\034';
+#endif /* TCSIG */
+}
+
+ void
+sendsusp()
+{
+#ifdef SIGTSTP
+ ptyflush(); /* half-hearted */
+# ifdef TCSIG
+ (void) ioctl(pty, TCSIG, (char *)SIGTSTP);
+# else /* TCSIG */
+ *pfrontp++ = slctab[SLC_SUSP].sptr ?
+ (unsigned char)*slctab[SLC_SUSP].sptr : '\032';
+# endif /* TCSIG */
+#endif /* SIGTSTP */
+}
+
+/*
+ * When we get an AYT, if ^T is enabled, use that. Otherwise,
+ * just send back "[Yes]".
+ */
+ void
+recv_ayt()
+{
+#if defined(SIGINFO) && defined(TCSIG)
+ if (slctab[SLC_AYT].sptr && *slctab[SLC_AYT].sptr != _POSIX_VDISABLE) {
+ (void) ioctl(pty, TCSIG, (char *)SIGINFO);
+ return;
+ }
+#endif
+ (void) strcpy(nfrontp, "\r\n[Yes]\r\n");
+ nfrontp += 9;
+}
+
+ void
+doeof()
+{
+ init_termbuf();
+
+#if defined(LINEMODE) && defined(USE_TERMIO) && (VEOF == VMIN)
+ if (!tty_isediting()) {
+ extern char oldeofc;
+ *pfrontp++ = oldeofc;
+ return;
+ }
+#endif
+ *pfrontp++ = slctab[SLC_EOF].sptr ?
+ (unsigned char)*slctab[SLC_EOF].sptr : '\004';
+}
--- /dev/null
+
+
+
+TELNETD(8) MAINTENANCE COMMANDS TELNETD(8)
+
+
+
+NAME
+ telnetd - DARPA TELNET protocol server
+
+SYNOPSIS
+ /etc/telnetd [-debug [_\bp_\bo_\br_\bt]] [-l] [-D options] [-D report]
+ [-D exercise] [-D netdata] [-D ptydata]
+
+DESCRIPTION
+ _\bT_\be_\bl_\bn_\be_\bt_\bd is a server which supports the DARPA standard TELNET
+ virtual terminal protocol. _\bT_\be_\bl_\bn_\be_\bt_\bd is invoked by the inter-
+ net server (see _\bi_\bn_\be_\bt_\bd(8)), normally for requests to connect
+ to the TELNET port as indicated by the /_\be_\bt_\bc/_\bs_\be_\br_\bv_\bi_\bc_\be_\bs file
+ (see _\bs_\be_\br_\bv_\bi_\bc_\be_\bs(5)). If the -debug may be used, to start up
+ telnetd manually, instead of through _\bi_\bn_\be_\bt_\bd(8). If started
+ up this way, _\bp_\bo_\br_\bt may be specified to run _\bt_\be_\bl_\bn_\be_\bt_\bd on an
+ alternate TCP port number.
+
+ The -D option may be used for debugging purposes. This
+ allows _\bt_\be_\bl_\bn_\be_\bt to print out debugging information to the con-
+ nection, allowing the user to see what telnetd is doing.
+ There are several modifiers: options prints information
+ about the negotiation of TELNET options, report prints the
+ options information, plus some additional information about
+ what processing is going on, netdata displays the data
+ stream received by _\bt_\be_\bl_\bn_\be_\bt_\bd, ptydata displays data written to
+ the pty, and exercise has not been implemented yet.
+
+ _\bT_\be_\bl_\bn_\be_\bt_\bd operates by allocating a pseudo-terminal device (see
+ _\bp_\bt_\by(4)) for a client, then creating a login process which
+ has the slave side of the pseudo-terminal as stdin, stdout,
+ and stderr. _\bT_\be_\bl_\bn_\be_\bt_\bd manipulates the master side of the
+ pseudo-terminal, implementing the TELNET protocol and pass-
+ ing characters between the remote client and the login pro-
+ cess.
+
+ When a TELNET session is started up, _\bt_\be_\bl_\bn_\be_\bt_\bd sends TELNET
+ options to the client side indicating a willingness to do
+ _\br_\be_\bm_\bo_\bt_\be _\be_\bc_\bh_\bo of characters, to _\bs_\bu_\bp_\bp_\br_\be_\bs_\bs _\bg_\bo _\ba_\bh_\be_\ba_\bd, to do
+ _\br_\be_\bm_\bo_\bt_\be _\bf_\bl_\bo_\bw _\bc_\bo_\bn_\bt_\br_\bo_\bl, and to receive _\bt_\be_\br_\bm_\bi_\bn_\ba_\bl _\bt_\by_\bp_\be _\bi_\bn_\bf_\bo_\br_\bm_\ba_\b-
+ _\bt_\bi_\bo_\bn, _\bt_\be_\br_\bm_\bi_\bn_\ba_\bl _\bs_\bp_\be_\be_\bd _\bi_\bn_\bf_\bo_\br_\bm_\ba_\bt_\bi_\bo_\bn, and _\bw_\bi_\bn_\bd_\bo_\bw _\bs_\bi_\bz_\be _\bi_\bn_\bf_\bo_\br_\bm_\ba_\b-
+ _\bt_\bi_\bo_\bn from the remote client. If the remote client is wil-
+ ling, the remote terminal type is propagated in the environ-
+ ment of the created login process. The pseudo-terminal
+ allocated to the client is configured to operate in "cooked"
+ mode, and with XTABS and CRMOD enabled (see _\bt_\bt_\by(4)).
+
+ _\bT_\be_\bl_\bn_\be_\bt_\bd is willing to _\bd_\bo: _\be_\bc_\bh_\bo, _\bb_\bi_\bn_\ba_\br_\by, _\bs_\bu_\bp_\bp_\br_\be_\bs_\bs _\bg_\bo _\ba_\bh_\be_\ba_\bd,
+ and _\bt_\bi_\bm_\bi_\bn_\bg _\bm_\ba_\br_\bk. _\bT_\be_\bl_\bn_\be_\bt_\bd is willing to have the remote
+ client _\bd_\bo: _\bl_\bi_\bn_\be_\bm_\bo_\bd_\be, _\bb_\bi_\bn_\ba_\br_\by, _\bt_\be_\br_\bm_\bi_\bn_\ba_\bl _\bt_\by_\bp_\be, _\bt_\be_\br_\bm_\bi_\bn_\ba_\bl _\bs_\bp_\be_\be_\bd,
+ _\bw_\bi_\bn_\bd_\bo_\bw _\bs_\bi_\bz_\be, _\bt_\bo_\bg_\bg_\bl_\be _\bf_\bl_\bo_\bw _\bc_\bo_\bn_\bt_\br_\bo_\bl, _\be_\bn_\bv_\bi_\br_\bo_\bn_\bm_\be_\bn_\bt, _\bX _\bd_\bi_\bs_\bp_\bl_\ba_\by
+ _\bl_\bo_\bc_\ba_\bt_\bi_\bo_\bn, and _\bs_\bu_\bp_\bp_\br_\be_\bs_\bs _\bg_\bo _\ba_\bh_\be_\ba_\bd.
+
+
+
+
+Sun Release 4.1 Last change: June 28, 1990 1
+
+
+
+
+
+
+TELNETD(8) MAINTENANCE COMMANDS TELNETD(8)
+
+
+
+SEE ALSO
+ telnet(1)
+
+BUGS
+ Some TELNET commands are only partially implemented.
+
+ Because of bugs in the original 4.2 BSD _\bt_\be_\bl_\bn_\be_\bt(1), _\bt_\be_\bl_\bn_\be_\bt_\bd
+ performs some dubious protocol exchanges to try to discover
+ if the remote client is, in fact, a 4.2 BSD _\bt_\be_\bl_\bn_\be_\bt(1).
+
+ _\bB_\bi_\bn_\ba_\br_\by _\bm_\bo_\bd_\be has no common interpretation except between
+ similar operating systems (Unix in this case).
+
+ The terminal type name received from the remote client is
+ converted to lower case.
+
+ _\bT_\be_\bl_\bn_\be_\bt_\bd never sends TELNET _\bg_\bo _\ba_\bh_\be_\ba_\bd commands.
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+Sun Release 4.1 Last change: June 28, 1990 2
+
+
+
--- /dev/null
+.\" Copyright (c) 1983 The Regents of the University of California.
+.\" All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms are permitted
+.\" provided that the above copyright notice and this paragraph are
+.\" duplicated in all such forms and that any documentation,
+.\" advertising materials, and other materials related to such
+.\" distribution and use acknowledge that the software was developed
+.\" by the University of California, Berkeley. The name of the
+.\" University may not be used to endorse or promote products derived
+.\" from this software without specific prior written permission.
+.\" THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
+.\" IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
+.\" WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+.\"
+.\" @(#)telnetd.8 6.7 (Berkeley) 6/28/90
+.\"
+.TH TELNETD 8 "June 28, 1990"
+.UC 5
+.SH NAME
+telnetd \- DARPA TELNET protocol server
+.SH SYNOPSIS
+.B /etc/telnetd
+[\fB\-debug\fP [\fIport\fP]]
+[\fB\-l]
+[\fB\-D options\fP]
+[\fB\-D report\fP]
+[\fB\-D exercise\fP]
+[\fB\-D netdata\fP]
+[\fB\-D ptydata\fP]
+.SH DESCRIPTION
+.I Telnetd
+is a server which supports the DARPA standard
+.B TELNET
+virtual terminal protocol.
+.I Telnetd
+is invoked by the internet server (see
+.IR inetd (8)),
+normally for requests to connect to the
+.B TELNET
+port as indicated by the
+.I /etc/services
+file (see
+.IR services (5)).
+If the \fB\-debug\fP may be used, to start up \fBtelnetd\fP
+manually, instead of through
+.IR inetd (8).
+If started up this way, \fIport\fP may be specified to
+run \fItelnetd\fP on an alternate TCP port number.
+.PP
+The \fB\-D\fP option may be used for debugging purposes.
+This allows \fItelnet\fR to print out debugging information
+to the connection, allowing the user to see what telnetd
+is doing.
+There are several modifiers:
+\fBoptions\fR prints information about the negotiation
+of \fBTELNET\fR options,
+\fBreport\fR prints the \fBoptions\fR information, plus
+some additional information about what processing is going on,
+\fBnetdata\fP displays the data stream received by \fItelnetd\fP,
+\fBptydata\fP displays data written to the pty, and
+\fBexercise\fR has not been implemented yet.
+.PP
+.I Telnetd
+operates by allocating a pseudo-terminal device (see
+.IR pty (4))
+for a client, then creating a login process which has
+the slave side of the pseudo-terminal as
+.BR stdin ,
+.BR stdout ,
+and
+.BR stderr .
+.I Telnetd
+manipulates the master side of the pseudo-terminal,
+implementing the
+.B TELNET
+protocol and passing characters
+between the remote client and the login process.
+.PP
+When a
+.B TELNET
+session is started up,
+.I telnetd
+sends
+.B TELNET
+options to the client side indicating
+a willingness to do
+.I remote echo
+of characters, to
+.I suppress go
+.IR ahead ,
+to do
+.I remote flow
+.IR control ,
+and to receive
+.I terminal type
+.IR information ,
+.I terminal speed
+.IR information ,
+and
+.I window size information
+from the remote client.
+If the remote client is willing, the remote terminal type is
+propagated in the environment of the created login process.
+The pseudo-terminal allocated to the client is configured
+to operate in \*(lqcooked\*(rq mode, and with XTABS and CRMOD
+enabled (see
+.IR tty (4)).
+.PP
+.I Telnetd
+is willing to
+.IR do :
+.IR echo ,
+.IR binary ,
+.I suppress go
+.IR ahead ,
+and
+.I timing
+.IR mark .
+.I Telnetd
+is willing to have the remote client
+.IR do :
+.IR linemode ,
+.IR binary ,
+.I terminal
+.IR type ,
+.I terminal
+.IR speed ,
+.I window
+.IR size ,
+.I toggle flow
+.IR control ,
+.IR environment ,
+.I X display
+.IR location ,
+and
+.I suppress go
+.IR ahead .
+.SH "SEE ALSO"
+telnet(1)
+.SH BUGS
+Some
+.B TELNET
+commands are only partially implemented.
+.PP
+Because of bugs in the original 4.2 BSD
+.IR telnet (1),
+.I telnetd
+performs some dubious protocol exchanges to try to discover if the remote
+client is, in fact, a 4.2 BSD
+.IR telnet (1).
+.PP
+.I Binary mode
+has no common interpretation except between similar operating systems
+(Unix in this case).
+.PP
+The terminal type name received from the remote client is converted to
+lower case.
+.PP
+.I Telnetd
+never sends
+.B TELNET
+.I go ahead
+commands.
--- /dev/null
+/*
+ * Copyright (c) 1989 Regents of the University of California.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef lint
+char copyright[] =
+"@(#) Copyright (c) 1989 Regents of the University of California.\n\
+ All rights reserved.\n";
+#endif /* not lint */
+
+#ifndef lint
+static char sccsid[] = "@(#)telnetd.c 5.51 (Berkeley) 1/21/93";
+#endif /* not lint */
+
+#include "telnetd.h"
+#include "pathnames.h"
+
+#if defined(_SC_CRAY_SECURE_SYS)
+#include <sys/sysv.h>
+#include <sys/secdev.h>
+int secflag;
+char tty_dev[16];
+struct secdev dv;
+struct sysv sysv;
+struct socket_security ss;
+#endif /* _SC_CRAY_SECURE_SYS */
+
+#if defined(AUTHENTICATION)
+#include <libtelnet/auth.h>
+int auth_level = 0;
+#endif
+#if defined(SecurID)
+int require_SecurID = 0;
+#endif
+
+extern int utmp_len;
+int registerd_host_only = 0;
+
+#ifdef STREAMSPTY
+# include <stropts.h>
+# include <termio.h>
+/* make sure we don't get the bsd version */
+# include "/usr/include/sys/tty.h"
+# include <sys/ptyvar.h>
+
+/*
+ * Because of the way ptyibuf is used with streams messages, we need
+ * ptyibuf+1 to be on a full-word boundary. The following wierdness
+ * is simply to make that happen.
+ */
+char ptyibufbuf[BUFSIZ+4];
+char *ptyibuf = ptyibufbuf+3;
+char *ptyip = ptyibufbuf+3;
+char ptyibuf2[BUFSIZ];
+unsigned char ctlbuf[BUFSIZ];
+struct strbuf strbufc, strbufd;
+
+int readstream();
+
+#else /* ! STREAMPTY */
+
+/*
+ * I/O data buffers,
+ * pointers, and counters.
+ */
+char ptyibuf[BUFSIZ], *ptyip = ptyibuf;
+char ptyibuf2[BUFSIZ];
+
+#endif /* ! STREAMPTY */
+
+int hostinfo = 1; /* do we print login banner? */
+
+#ifdef CRAY
+extern int newmap; /* nonzero if \n maps to ^M^J */
+int lowpty = 0, highpty; /* low, high pty numbers */
+#endif /* CRAY */
+
+int debug = 0;
+int keepalive = 1;
+char *progname;
+
+extern void usage P((void));
+
+main(argc, argv)
+ char *argv[];
+{
+ struct sockaddr_in from;
+ int on = 1, fromlen;
+ register int ch;
+ extern char *optarg;
+ extern int optind;
+#if defined(IPPROTO_IP) && defined(IP_TOS)
+ int tos = -1;
+#endif
+
+ pfrontp = pbackp = ptyobuf;
+ netip = netibuf;
+ nfrontp = nbackp = netobuf;
+#if defined(ENCRYPTION)
+ nclearto = 0;
+#endif
+
+ progname = *argv;
+
+#ifdef CRAY
+ /*
+ * Get number of pty's before trying to process options,
+ * which may include changing pty range.
+ */
+ highpty = getnpty();
+#endif /* CRAY */
+
+ while ((ch = getopt(argc, argv, "d:a:e:klhnr:u:UI:D:B:sS:a:X:")) != EOF) {
+ switch(ch) {
+
+#ifdef AUTHENTICATION
+ case 'a':
+ /*
+ * Check for required authentication level
+ */
+ if (strcmp(optarg, "debug") == 0) {
+ extern int auth_debug_mode;
+ auth_debug_mode = 1;
+ } else if (strcasecmp(optarg, "none") == 0) {
+ auth_level = 0;
+ } else if (strcasecmp(optarg, "other") == 0) {
+ auth_level = AUTH_OTHER;
+ } else if (strcasecmp(optarg, "user") == 0) {
+ auth_level = AUTH_USER;
+ } else if (strcasecmp(optarg, "valid") == 0) {
+ auth_level = AUTH_VALID;
+ } else if (strcasecmp(optarg, "off") == 0) {
+ /*
+ * This hack turns off authentication
+ */
+ auth_level = -1;
+ } else {
+ fprintf(stderr,
+ "telnetd: unknown authorization level for -a\n");
+ }
+ break;
+#endif /* AUTHENTICATION */
+
+#ifdef BFTPDAEMON
+ case 'B':
+ bftpd++;
+ break;
+#endif /* BFTPDAEMON */
+
+ case 'd':
+ if (strcmp(optarg, "ebug") == 0) {
+ debug++;
+ break;
+ }
+ usage();
+ /* NOTREACHED */
+ break;
+
+#ifdef DIAGNOSTICS
+ case 'D':
+ /*
+ * Check for desired diagnostics capabilities.
+ */
+ if (!strcmp(optarg, "report")) {
+ diagnostic |= TD_REPORT|TD_OPTIONS;
+ } else if (!strcmp(optarg, "exercise")) {
+ diagnostic |= TD_EXERCISE;
+ } else if (!strcmp(optarg, "netdata")) {
+ diagnostic |= TD_NETDATA;
+ } else if (!strcmp(optarg, "ptydata")) {
+ diagnostic |= TD_PTYDATA;
+ } else if (!strcmp(optarg, "options")) {
+ diagnostic |= TD_OPTIONS;
+ } else {
+ usage();
+ /* NOT REACHED */
+ }
+ break;
+#endif /* DIAGNOSTICS */
+
+#ifdef ENCRYPTION
+ case 'e':
+ if (strcmp(optarg, "debug") == 0) {
+ extern int encrypt_debug_mode;
+ encrypt_debug_mode = 1;
+ break;
+ }
+ usage();
+ /* NOTREACHED */
+ break;
+#endif /* ENCRYPTION */
+
+ case 'h':
+ hostinfo = 0;
+ break;
+
+#if defined(CRAY) && defined(NEWINIT)
+ case 'I':
+ {
+ extern char *gen_id;
+ gen_id = optarg;
+ break;
+ }
+#endif /* defined(CRAY) && defined(NEWINIT) */
+
+#ifdef LINEMODE
+ case 'l':
+ alwayslinemode = 1;
+ break;
+#endif /* LINEMODE */
+
+ case 'k':
+#if defined(LINEMODE) && defined(KLUDGELINEMODE)
+ lmodetype = NO_AUTOKLUDGE;
+#else
+ /* ignore -k option if built without kludge linemode */
+#endif /* defined(LINEMODE) && defined(KLUDGELINEMODE) */
+ break;
+
+ case 'n':
+ keepalive = 0;
+ break;
+
+#ifdef CRAY
+ case 'r':
+ {
+ char *strchr();
+ char *c;
+
+ /*
+ * Allow the specification of alterations
+ * to the pty search range. It is legal to
+ * specify only one, and not change the
+ * other from its default.
+ */
+ c = strchr(optarg, '-');
+ if (c) {
+ *c++ = '\0';
+ highpty = atoi(c);
+ }
+ if (*optarg != '\0')
+ lowpty = atoi(optarg);
+ if ((lowpty > highpty) || (lowpty < 0) ||
+ (highpty > 32767)) {
+ usage();
+ /* NOT REACHED */
+ }
+ break;
+ }
+#endif /* CRAY */
+
+#ifdef SecurID
+ case 's':
+ /* SecurID required */
+ require_SecurID = 1;
+ break;
+#endif /* SecurID */
+ case 'S':
+#ifdef HAS_GETTOS
+ if ((tos = parsetos(optarg, "tcp")) < 0)
+ fprintf(stderr, "%s%s%s\n",
+ "telnetd: Bad TOS argument '", optarg,
+ "'; will try to use default TOS");
+#else
+ fprintf(stderr, "%s%s\n", "TOS option unavailable; ",
+ "-S flag not supported\n");
+#endif
+ break;
+
+ case 'u':
+ utmp_len = atoi(optarg);
+ break;
+
+ case 'U':
+ registerd_host_only = 1;
+ break;
+
+#ifdef AUTHENTICATION
+ case 'X':
+ /*
+ * Check for invalid authentication types
+ */
+ auth_disable_name(optarg);
+ break;
+#endif /* AUTHENTICATION */
+
+ default:
+ fprintf(stderr, "telnetd: %s: unknown option\n", ch);
+ /* FALLTHROUGH */
+ case '?':
+ usage();
+ /* NOTREACHED */
+ }
+ }
+
+ argc -= optind;
+ argv += optind;
+
+ if (debug) {
+ int s, ns, foo;
+ struct servent *sp;
+ static struct sockaddr_in sin = { AF_INET };
+
+ if (argc > 1) {
+ usage();
+ /* NOT REACHED */
+ } else if (argc == 1) {
+ if (sp = getservbyname(*argv, "tcp")) {
+ sin.sin_port = sp->s_port;
+ } else {
+ sin.sin_port = atoi(*argv);
+ if ((int)sin.sin_port <= 0) {
+ fprintf(stderr, "telnetd: %s: bad port #\n", *argv);
+ usage();
+ /* NOT REACHED */
+ }
+ sin.sin_port = htons((u_short)sin.sin_port);
+ }
+ } else {
+ sp = getservbyname("telnet", "tcp");
+ if (sp == 0) {
+ fprintf(stderr, "telnetd: tcp/telnet: unknown service\n");
+ exit(1);
+ }
+ sin.sin_port = sp->s_port;
+ }
+
+ s = socket(AF_INET, SOCK_STREAM, 0);
+ if (s < 0) {
+ perror("telnetd: socket");;
+ exit(1);
+ }
+ (void) setsockopt(s, SOL_SOCKET, SO_REUSEADDR,
+ (char *)&on, sizeof(on));
+ if (bind(s, (struct sockaddr *)&sin, sizeof sin) < 0) {
+ perror("bind");
+ exit(1);
+ }
+ if (listen(s, 1) < 0) {
+ perror("listen");
+ exit(1);
+ }
+ foo = sizeof sin;
+ ns = accept(s, (struct sockaddr *)&sin, &foo);
+ if (ns < 0) {
+ perror("accept");
+ exit(1);
+ }
+ (void) dup2(ns, 0);
+ (void) close(ns);
+ (void) close(s);
+#ifdef convex
+ } else if (argc == 1) {
+ ; /* VOID*/ /* Just ignore the host/port name */
+#endif
+ } else if (argc > 0) {
+ usage();
+ /* NOT REACHED */
+ }
+
+#if defined(_SC_CRAY_SECURE_SYS)
+ secflag = sysconf(_SC_CRAY_SECURE_SYS);
+
+ /*
+ * Get socket's security label
+ */
+ if (secflag) {
+ int sz = sizeof(ss);
+
+ bzero((char *)&dv, sizeof(dv));
+
+ if (getsysv(&sysv, sizeof(struct sysv)) != 0) {
+ perror("getsysv");
+ exit(1);
+ }
+
+ /*
+ * Get socket security label and set device values
+ * {security label to be set on ttyp device}
+ */
+ if (getsockopt(0, SOL_SOCKET, SO_SECURITY,
+ (char *)&ss, &sz) >= 0) {
+
+ dv.dv_actlvl = ss.ss_slevel;
+ dv.dv_actcmp = ss.ss_compart;
+ dv.dv_minlvl = ss.ss_minlvl;
+ dv.dv_maxlvl = ss.ss_maxlvl;
+ dv.dv_valcmp = ss.ss_maxcmp;
+ }
+ }
+#endif /* _SC_CRAY_SECURE_SYS */
+
+ openlog("telnetd", LOG_PID | LOG_ODELAY, LOG_DAEMON);
+ fromlen = sizeof (from);
+ if (getpeername(0, (struct sockaddr *)&from, &fromlen) < 0) {
+ fprintf(stderr, "%s: ", progname);
+ perror("getpeername");
+ _exit(1);
+ }
+ if (keepalive &&
+ setsockopt(0, SOL_SOCKET, SO_KEEPALIVE,
+ (char *)&on, sizeof (on)) < 0) {
+ syslog(LOG_WARNING, "setsockopt (SO_KEEPALIVE): %m");
+ }
+
+#if defined(IPPROTO_IP) && defined(IP_TOS)
+ {
+# if defined(HAS_GETTOS)
+ struct tosent *tp;
+ if (tos < 0 && (tp = gettosbyname("telnet", "tcp")))
+ tos = tp->t_tos;
+# endif
+ if (tos < 0)
+ tos = 020; /* Low Delay bit */
+ if (tos
+ && (setsockopt(0, IPPROTO_IP, IP_TOS,
+ (char *)&tos, sizeof(tos)) < 0)
+ && (errno != ENOPROTOOPT) )
+ syslog(LOG_WARNING, "setsockopt (IP_TOS): %m");
+ }
+#endif /* defined(IPPROTO_IP) && defined(IP_TOS) */
+ net = 0;
+ doit(&from);
+ /* NOTREACHED */
+} /* end of main */
+
+ void
+usage()
+{
+ fprintf(stderr, "Usage: telnetd");
+#ifdef AUTHENTICATION
+ fprintf(stderr, " [-a (debug|other|user|valid|off)]\n\t");
+#endif
+#ifdef BFTPDAEMON
+ fprintf(stderr, " [-B]");
+#endif
+ fprintf(stderr, " [-debug]");
+#ifdef DIAGNOSTICS
+ fprintf(stderr, " [-D (options|report|exercise|netdata|ptydata)]\n\t");
+#endif
+#ifdef AUTHENTICATION
+ fprintf(stderr, " [-edebug]");
+#endif
+ fprintf(stderr, " [-h]");
+#if defined(CRAY) && defined(NEWINIT)
+ fprintf(stderr, " [-Iinitid]");
+#endif
+#ifdef LINEMODE
+ fprintf(stderr, " [-l]");
+#endif
+ fprintf(stderr, " [-n]");
+#ifdef CRAY
+ fprintf(stderr, " [-r[lowpty]-[highpty]]");
+#endif
+#ifdef SecurID
+ fprintf(stderr, " [-s]");
+#endif
+#ifdef AUTHENTICATION
+ fprintf(stderr, " [-X auth-type]");
+#endif
+ fprintf(stderr, " [-u utmp_hostname_length] [-U]");
+ fprintf(stderr, " [port]\n");
+ exit(1);
+}
+
+/*
+ * getterminaltype
+ *
+ * Ask the other end to send along its terminal type and speed.
+ * Output is the variable terminaltype filled in.
+ */
+static char ttytype_sbbuf[] = { IAC, SB, TELOPT_TTYPE, TELQUAL_SEND, IAC, SE };
+
+ int
+getterminaltype(name)
+ char *name;
+{
+ int retval = -1;
+ void _gettermname();
+
+ settimer(baseline);
+#if defined(AUTHENTICATION)
+ /*
+ * Handle the Authentication option before we do anything else.
+ */
+ send_do(TELOPT_AUTHENTICATION, 1);
+ while (his_will_wont_is_changing(TELOPT_AUTHENTICATION))
+ ttloop();
+ if (his_state_is_will(TELOPT_AUTHENTICATION)) {
+ retval = auth_wait(name);
+ }
+#endif
+
+#if defined(ENCRYPTION)
+ send_will(TELOPT_ENCRYPT, 1);
+#endif
+ send_do(TELOPT_TTYPE, 1);
+ send_do(TELOPT_TSPEED, 1);
+ send_do(TELOPT_XDISPLOC, 1);
+ send_do(TELOPT_ENVIRON, 1);
+ while (
+#if defined(ENCRYPTION)
+ his_do_dont_is_changing(TELOPT_ENCRYPT) ||
+#endif
+ his_will_wont_is_changing(TELOPT_TTYPE) ||
+ his_will_wont_is_changing(TELOPT_TSPEED) ||
+ his_will_wont_is_changing(TELOPT_XDISPLOC) ||
+ his_will_wont_is_changing(TELOPT_ENVIRON)) {
+ ttloop();
+ }
+#if defined(ENCRYPTION)
+ /*
+ * Wait for the negotiation of what type of encryption we can
+ * send with. If autoencrypt is not set, this will just return.
+ */
+ if (his_state_is_will(TELOPT_ENCRYPT)) {
+ encrypt_wait();
+ }
+#endif
+ if (his_state_is_will(TELOPT_TSPEED)) {
+ static char sbbuf[] = { IAC, SB, TELOPT_TSPEED, TELQUAL_SEND, IAC, SE };
+
+ bcopy(sbbuf, nfrontp, sizeof sbbuf);
+ nfrontp += sizeof sbbuf;
+ }
+ if (his_state_is_will(TELOPT_XDISPLOC)) {
+ static char sbbuf[] = { IAC, SB, TELOPT_XDISPLOC, TELQUAL_SEND, IAC, SE };
+
+ bcopy(sbbuf, nfrontp, sizeof sbbuf);
+ nfrontp += sizeof sbbuf;
+ }
+ if (his_state_is_will(TELOPT_ENVIRON)) {
+ static char sbbuf[] = { IAC, SB, TELOPT_ENVIRON, TELQUAL_SEND, IAC, SE };
+
+ bcopy(sbbuf, nfrontp, sizeof sbbuf);
+ nfrontp += sizeof sbbuf;
+ }
+ if (his_state_is_will(TELOPT_TTYPE)) {
+
+ bcopy(ttytype_sbbuf, nfrontp, sizeof ttytype_sbbuf);
+ nfrontp += sizeof ttytype_sbbuf;
+ }
+ if (his_state_is_will(TELOPT_TSPEED)) {
+ while (sequenceIs(tspeedsubopt, baseline))
+ ttloop();
+ }
+ if (his_state_is_will(TELOPT_XDISPLOC)) {
+ while (sequenceIs(xdisplocsubopt, baseline))
+ ttloop();
+ }
+ if (his_state_is_will(TELOPT_ENVIRON)) {
+ while (sequenceIs(environsubopt, baseline))
+ ttloop();
+ }
+ if (his_state_is_will(TELOPT_TTYPE)) {
+ char first[256], last[256];
+
+ while (sequenceIs(ttypesubopt, baseline))
+ ttloop();
+
+ /*
+ * If the other side has already disabled the option, then
+ * we have to just go with what we (might) have already gotten.
+ */
+ if (his_state_is_will(TELOPT_TTYPE) && !terminaltypeok(terminaltype)) {
+ (void) strncpy(first, terminaltype, sizeof(first));
+ for(;;) {
+ /*
+ * Save the unknown name, and request the next name.
+ */
+ (void) strncpy(last, terminaltype, sizeof(last));
+ _gettermname();
+ if (terminaltypeok(terminaltype))
+ break;
+ if ((strncmp(last, terminaltype, sizeof(last)) == 0) ||
+ his_state_is_wont(TELOPT_TTYPE)) {
+ /*
+ * We've hit the end. If this is the same as
+ * the first name, just go with it.
+ */
+ if (strncmp(first, terminaltype, sizeof(first)) == 0)
+ break;
+ /*
+ * Get the terminal name one more time, so that
+ * RFC1091 compliant telnets will cycle back to
+ * the start of the list.
+ */
+ _gettermname();
+ if (strncmp(first, terminaltype, sizeof(first)) != 0)
+ (void) strncpy(terminaltype, first, sizeof(first));
+ break;
+ }
+ }
+ }
+ }
+ return(retval);
+} /* end of getterminaltype */
+
+ void
+_gettermname()
+{
+ /*
+ * If the client turned off the option,
+ * we can't send another request, so we
+ * just return.
+ */
+ if (his_state_is_wont(TELOPT_TTYPE))
+ return;
+ settimer(baseline);
+ bcopy(ttytype_sbbuf, nfrontp, sizeof ttytype_sbbuf);
+ nfrontp += sizeof ttytype_sbbuf;
+ while (sequenceIs(ttypesubopt, baseline))
+ ttloop();
+}
+
+ int
+terminaltypeok(s)
+ char *s;
+{
+ char buf[1024];
+
+ if (terminaltype == NULL)
+ return(1);
+
+ /*
+ * tgetent() will return 1 if the type is known, and
+ * 0 if it is not known. If it returns -1, it couldn't
+ * open the database. But if we can't open the database,
+ * it won't help to say we failed, because we won't be
+ * able to verify anything else. So, we treat -1 like 1.
+ */
+ if (tgetent(buf, s) == 0)
+ return(0);
+ return(1);
+}
+
+#ifndef MAXHOSTNAMELEN
+#define MAXHOSTNAMELEN 64
+#endif /* MAXHOSTNAMELEN */
+
+char *hostname;
+char host_name[MAXHOSTNAMELEN];
+char remote_host_name[MAXHOSTNAMELEN];
+
+#ifndef convex
+extern void telnet P((int, int));
+#else
+extern void telnet P((int, int, char *));
+#endif
+
+/*
+ * Get a pty, scan input lines.
+ */
+doit(who)
+ struct sockaddr_in *who;
+{
+ char *host, *inet_ntoa();
+ int t;
+ struct hostent *hp;
+ int level;
+ char user_name[256];
+
+ /*
+ * Find an available pty to use.
+ */
+#ifndef convex
+ pty = getpty();
+ if (pty < 0)
+ fatal(net, "All network ports in use");
+#else
+ for (;;) {
+ char *lp;
+ extern char *line, *getpty();
+
+ if ((lp = getpty()) == NULL)
+ fatal(net, "Out of ptys");
+
+ if ((pty = open(lp, 2)) >= 0) {
+ strcpy(line,lp);
+ line[5] = 't';
+ break;
+ }
+ }
+#endif
+
+#if defined(_SC_CRAY_SECURE_SYS)
+ /*
+ * set ttyp line security label
+ */
+ if (secflag) {
+ extern char *myline;
+ if (setdevs(myline, &dv) < 0)
+ fatal(net, "cannot set pty security");
+ }
+#endif /* _SC_CRAY_SECURE_SYS */
+
+ /* get name of connected client */
+ hp = gethostbyaddr((char *)&who->sin_addr, sizeof (struct in_addr),
+ who->sin_family);
+
+ if (hp == NULL && registerd_host_only) {
+ fatal(net, "Couldn't resolve your address into a host name.\r\n\
+ Please contact your net administrator");
+ } else if (hp &&
+ (strlen(hp->h_name) <= ((utmp_len < 0) ? -utmp_len : utmp_len))) {
+ host = hp->h_name;
+ } else {
+ host = inet_ntoa(who->sin_addr);
+ }
+ /*
+ * We must make a copy because Kerberos is probably going
+ * to also do a gethost* and overwrite the static data...
+ */
+ strncpy(remote_host_name, host, sizeof(remote_host_name)-1);
+ remote_host_name[sizeof(remote_host_name)-1] = 0;
+ host = remote_host_name;
+
+ (void) gethostname(host_name, sizeof (host_name));
+ hostname = host_name;
+
+#if defined(AUTHENTICATION) || defined(ENCRYPTION)
+ auth_encrypt_init(hostname, host, "TELNETD", 1);
+#endif
+
+ init_env();
+ /*
+ * get terminal type.
+ */
+ *user_name = 0;
+ level = getterminaltype(user_name);
+ setenv("TERM", terminaltype ? terminaltype : "network", 1);
+
+ /*
+ * Start up the login process on the slave side of the terminal
+ */
+#ifndef convex
+ startslave(host, level, user_name);
+
+ telnet(net, pty); /* begin server processing */
+#else
+ telnet(net, pty, host);
+#endif
+ /*NOTREACHED*/
+} /* end of doit */
+
+#if defined(CRAY2) && defined(UNICOS5) && defined(UNICOS50)
+ int
+Xterm_output(ibufp, obuf, icountp, ocount)
+ char **ibufp, *obuf;
+ int *icountp, ocount;
+{
+ int ret;
+ ret = term_output(*ibufp, obuf, *icountp, ocount);
+ *ibufp += *icountp;
+ *icountp = 0;
+ return(ret);
+}
+#define term_output Xterm_output
+#endif /* defined(CRAY2) && defined(UNICOS5) && defined(UNICOS50) */
+
+/*
+ * Main loop. Select from pty and network, and
+ * hand data to telnet receiver finite state machine.
+ */
+ void
+#ifndef convex
+telnet(f, p)
+#else
+telnet(f, p, host)
+#endif
+ int f, p;
+#ifdef convex
+ char *host;
+#endif
+{
+ int on = 1;
+#define TABBUFSIZ 512
+ char defent[TABBUFSIZ];
+ char defstrs[TABBUFSIZ];
+#undef TABBUFSIZ
+ char *HE;
+ char *HN;
+ char *IM;
+ void netflush();
+
+ /*
+ * Initialize the slc mapping table.
+ */
+ get_slc_defaults();
+
+ /*
+ * Do some tests where it is desireable to wait for a response.
+ * Rather than doing them slowly, one at a time, do them all
+ * at once.
+ */
+ if (my_state_is_wont(TELOPT_SGA))
+ send_will(TELOPT_SGA, 1);
+ /*
+ * Is the client side a 4.2 (NOT 4.3) system? We need to know this
+ * because 4.2 clients are unable to deal with TCP urgent data.
+ *
+ * To find out, we send out a "DO ECHO". If the remote system
+ * answers "WILL ECHO" it is probably a 4.2 client, and we note
+ * that fact ("WILL ECHO" ==> that the client will echo what
+ * WE, the server, sends it; it does NOT mean that the client will
+ * echo the terminal input).
+ */
+ send_do(TELOPT_ECHO, 1);
+
+#ifdef LINEMODE
+ if (his_state_is_wont(TELOPT_LINEMODE)) {
+ /* Query the peer for linemode support by trying to negotiate
+ * the linemode option.
+ */
+ linemode = 0;
+ editmode = 0;
+ send_do(TELOPT_LINEMODE, 1); /* send do linemode */
+ }
+#endif /* LINEMODE */
+
+ /*
+ * Send along a couple of other options that we wish to negotiate.
+ */
+ send_do(TELOPT_NAWS, 1);
+ send_will(TELOPT_STATUS, 1);
+ flowmode = 1; /* default flow control state */
+ restartany = -1; /* uninitialized... */
+ send_do(TELOPT_LFLOW, 1);
+
+ /*
+ * Spin, waiting for a response from the DO ECHO. However,
+ * some REALLY DUMB telnets out there might not respond
+ * to the DO ECHO. So, we spin looking for NAWS, (most dumb
+ * telnets so far seem to respond with WONT for a DO that
+ * they don't understand...) because by the time we get the
+ * response, it will already have processed the DO ECHO.
+ * Kludge upon kludge.
+ */
+ while (his_will_wont_is_changing(TELOPT_NAWS))
+ ttloop();
+
+ /*
+ * But...
+ * The client might have sent a WILL NAWS as part of its
+ * startup code; if so, we'll be here before we get the
+ * response to the DO ECHO. We'll make the assumption
+ * that any implementation that understands about NAWS
+ * is a modern enough implementation that it will respond
+ * to our DO ECHO request; hence we'll do another spin
+ * waiting for the ECHO option to settle down, which is
+ * what we wanted to do in the first place...
+ */
+ if (his_want_state_is_will(TELOPT_ECHO) &&
+ his_state_is_will(TELOPT_NAWS)) {
+ while (his_will_wont_is_changing(TELOPT_ECHO))
+ ttloop();
+ }
+ /*
+ * On the off chance that the telnet client is broken and does not
+ * respond to the DO ECHO we sent, (after all, we did send the
+ * DO NAWS negotiation after the DO ECHO, and we won't get here
+ * until a response to the DO NAWS comes back) simulate the
+ * receipt of a will echo. This will also send a WONT ECHO
+ * to the client, since we assume that the client failed to
+ * respond because it believes that it is already in DO ECHO
+ * mode, which we do not want.
+ */
+ if (his_want_state_is_will(TELOPT_ECHO)) {
+ DIAG(TD_OPTIONS,
+ {sprintf(nfrontp, "td: simulating recv\r\n");
+ nfrontp += strlen(nfrontp);});
+ willoption(TELOPT_ECHO);
+ }
+
+ /*
+ * Finally, to clean things up, we turn on our echo. This
+ * will break stupid 4.2 telnets out of local terminal echo.
+ */
+
+ if (my_state_is_wont(TELOPT_ECHO))
+ send_will(TELOPT_ECHO, 1);
+
+#ifndef STREAMSPTY
+ /*
+ * Turn on packet mode
+ */
+ (void) ioctl(p, TIOCPKT, (char *)&on);
+#endif
+
+#if defined(LINEMODE) && defined(KLUDGELINEMODE)
+ /*
+ * Continuing line mode support. If client does not support
+ * real linemode, attempt to negotiate kludge linemode by sending
+ * the do timing mark sequence.
+ */
+ if (lmodetype < REAL_LINEMODE)
+ send_do(TELOPT_TM, 1);
+#endif /* defined(LINEMODE) && defined(KLUDGELINEMODE) */
+
+ /*
+ * Call telrcv() once to pick up anything received during
+ * terminal type negotiation, 4.2/4.3 determination, and
+ * linemode negotiation.
+ */
+ telrcv();
+
+ (void) ioctl(f, FIONBIO, (char *)&on);
+ (void) ioctl(p, FIONBIO, (char *)&on);
+#if defined(CRAY2) && defined(UNICOS5)
+ init_termdriver(f, p, interrupt, sendbrk);
+#endif
+
+#if defined(SO_OOBINLINE)
+ (void) setsockopt(net, SOL_SOCKET, SO_OOBINLINE,
+ (char *)&on, sizeof on);
+#endif /* defined(SO_OOBINLINE) */
+
+#ifdef SIGTSTP
+ (void) signal(SIGTSTP, SIG_IGN);
+#endif
+#ifdef SIGTTOU
+ /*
+ * Ignoring SIGTTOU keeps the kernel from blocking us
+ * in ttioct() in /sys/tty.c.
+ */
+ (void) signal(SIGTTOU, SIG_IGN);
+#endif
+
+ (void) signal(SIGCHLD, cleanup);
+
+#if defined(CRAY2) && defined(UNICOS5)
+ /*
+ * Cray-2 will send a signal when pty modes are changed by slave
+ * side. Set up signal handler now.
+ */
+ if ((int)signal(SIGUSR1, termstat) < 0)
+ perror("signal");
+ else if (ioctl(p, TCSIGME, (char *)SIGUSR1) < 0)
+ perror("ioctl:TCSIGME");
+ /*
+ * Make processing loop check terminal characteristics early on.
+ */
+ termstat();
+#endif
+
+#ifdef TIOCNOTTY
+ {
+ register int t;
+ t = open(_PATH_TTY, O_RDWR);
+ if (t >= 0) {
+ (void) ioctl(t, TIOCNOTTY, (char *)0);
+ (void) close(t);
+ }
+ }
+#endif
+
+#if defined(CRAY) && defined(NEWINIT) && defined(TIOCSCTTY)
+ (void) setsid();
+ ioctl(p, TIOCSCTTY, 0);
+#endif
+
+ /*
+ * Show banner that getty never gave.
+ *
+ * We put the banner in the pty input buffer. This way, it
+ * gets carriage return null processing, etc., just like all
+ * other pty --> client data.
+ */
+
+#if !defined(CRAY) || !defined(NEWINIT)
+ if (getenv("USER"))
+ hostinfo = 0;
+#endif
+
+ if (getent(defent, "default") == 1) {
+ char *getstr();
+ char *cp=defstrs;
+
+ HE = getstr("he", &cp);
+ HN = getstr("hn", &cp);
+ IM = getstr("im", &cp);
+ if (HN && *HN)
+ (void) strcpy(host_name, HN);
+ if (IM == 0)
+ IM = "";
+ } else {
+ IM = DEFAULT_IM;
+ HE = 0;
+ }
+ edithost(HE, host_name);
+ if (hostinfo && *IM)
+ putf(IM, ptyibuf2);
+
+ if (pcc)
+ (void) strncat(ptyibuf2, ptyip, pcc+1);
+ ptyip = ptyibuf2;
+ pcc = strlen(ptyip);
+#ifdef LINEMODE
+ /*
+ * Last check to make sure all our states are correct.
+ */
+ init_termbuf();
+ localstat();
+#endif /* LINEMODE */
+
+ DIAG(TD_REPORT,
+ {sprintf(nfrontp, "td: Entering processing loop\r\n");
+ nfrontp += strlen(nfrontp);});
+
+#ifdef convex
+ startslave(host);
+#endif
+
+ for (;;) {
+ fd_set ibits, obits, xbits;
+ register int c;
+
+ if (ncc < 0 && pcc < 0)
+ break;
+
+#if defined(CRAY2) && defined(UNICOS5)
+ if (needtermstat)
+ _termstat();
+#endif /* defined(CRAY2) && defined(UNICOS5) */
+ FD_ZERO(&ibits);
+ FD_ZERO(&obits);
+ FD_ZERO(&xbits);
+ /*
+ * Never look for input if there's still
+ * stuff in the corresponding output buffer
+ */
+ if (nfrontp - nbackp || pcc > 0) {
+ FD_SET(f, &obits);
+ } else {
+ FD_SET(p, &ibits);
+ }
+ if (pfrontp - pbackp || ncc > 0) {
+ FD_SET(p, &obits);
+ } else {
+ FD_SET(f, &ibits);
+ }
+ if (!SYNCHing) {
+ FD_SET(f, &xbits);
+ }
+ if ((c = select(16, &ibits, &obits, &xbits,
+ (struct timeval *)0)) < 1) {
+ if (c == -1) {
+ if (errno == EINTR) {
+ continue;
+ }
+ }
+ sleep(5);
+ continue;
+ }
+
+ /*
+ * Any urgent data?
+ */
+ if (FD_ISSET(net, &xbits)) {
+ SYNCHing = 1;
+ }
+
+ /*
+ * Something to read from the network...
+ */
+ if (FD_ISSET(net, &ibits)) {
+#if !defined(SO_OOBINLINE)
+ /*
+ * In 4.2 (and 4.3 beta) systems, the
+ * OOB indication and data handling in the kernel
+ * is such that if two separate TCP Urgent requests
+ * come in, one byte of TCP data will be overlaid.
+ * This is fatal for Telnet, but we try to live
+ * with it.
+ *
+ * In addition, in 4.2 (and...), a special protocol
+ * is needed to pick up the TCP Urgent data in
+ * the correct sequence.
+ *
+ * What we do is: if we think we are in urgent
+ * mode, we look to see if we are "at the mark".
+ * If we are, we do an OOB receive. If we run
+ * this twice, we will do the OOB receive twice,
+ * but the second will fail, since the second
+ * time we were "at the mark", but there wasn't
+ * any data there (the kernel doesn't reset
+ * "at the mark" until we do a normal read).
+ * Once we've read the OOB data, we go ahead
+ * and do normal reads.
+ *
+ * There is also another problem, which is that
+ * since the OOB byte we read doesn't put us
+ * out of OOB state, and since that byte is most
+ * likely the TELNET DM (data mark), we would
+ * stay in the TELNET SYNCH (SYNCHing) state.
+ * So, clocks to the rescue. If we've "just"
+ * received a DM, then we test for the
+ * presence of OOB data when the receive OOB
+ * fails (and AFTER we did the normal mode read
+ * to clear "at the mark").
+ */
+ if (SYNCHing) {
+ int atmark;
+
+ (void) ioctl(net, SIOCATMARK, (char *)&atmark);
+ if (atmark) {
+ ncc = recv(net, netibuf, sizeof (netibuf), MSG_OOB);
+ if ((ncc == -1) && (errno == EINVAL)) {
+ ncc = read(net, netibuf, sizeof (netibuf));
+ if (sequenceIs(didnetreceive, gotDM)) {
+ SYNCHing = stilloob(net);
+ }
+ }
+ } else {
+ ncc = read(net, netibuf, sizeof (netibuf));
+ }
+ } else {
+ ncc = read(net, netibuf, sizeof (netibuf));
+ }
+ settimer(didnetreceive);
+#else /* !defined(SO_OOBINLINE)) */
+ ncc = read(net, netibuf, sizeof (netibuf));
+#endif /* !defined(SO_OOBINLINE)) */
+ if (ncc < 0 && errno == EWOULDBLOCK)
+ ncc = 0;
+ else {
+ if (ncc <= 0) {
+ break;
+ }
+ netip = netibuf;
+ }
+ DIAG((TD_REPORT | TD_NETDATA),
+ {sprintf(nfrontp, "td: netread %d chars\r\n", ncc);
+ nfrontp += strlen(nfrontp);});
+ DIAG(TD_NETDATA, printdata("nd", netip, ncc));
+ }
+
+ /*
+ * Something to read from the pty...
+ */
+ if (FD_ISSET(p, &ibits)) {
+#ifndef STREAMSPTY
+ pcc = read(p, ptyibuf, BUFSIZ);
+#else
+ pcc = readstream(p, ptyibuf, BUFSIZ);
+#endif
+ /*
+ * On some systems, if we try to read something
+ * off the master side before the slave side is
+ * opened, we get EIO.
+ */
+ if (pcc < 0 && (errno == EWOULDBLOCK ||
+#ifdef EAGAIN
+ errno == EAGAIN ||
+#endif
+ errno == EIO)) {
+ pcc = 0;
+ } else {
+ if (pcc <= 0)
+ break;
+#if !defined(CRAY2) || !defined(UNICOS5)
+#ifdef LINEMODE
+ /*
+ * If ioctl from pty, pass it through net
+ */
+ if (ptyibuf[0] & TIOCPKT_IOCTL) {
+ copy_termbuf(ptyibuf+1, pcc-1);
+ localstat();
+ pcc = 1;
+ }
+#endif /* LINEMODE */
+ if (ptyibuf[0] & TIOCPKT_FLUSHWRITE) {
+ netclear(); /* clear buffer back */
+#ifndef NO_URGENT
+ /*
+ * There are client telnets on some
+ * operating systems get screwed up
+ * royally if we send them urgent
+ * mode data.
+ */
+ *nfrontp++ = IAC;
+ *nfrontp++ = DM;
+ neturg = nfrontp-1; /* off by one XXX */
+#endif
+ }
+ if (his_state_is_will(TELOPT_LFLOW) &&
+ (ptyibuf[0] &
+ (TIOCPKT_NOSTOP|TIOCPKT_DOSTOP))) {
+ int newflow =
+ ptyibuf[0] & TIOCPKT_DOSTOP ? 1 : 0;
+ if (newflow != flowmode) {
+ flowmode = newflow;
+ (void) sprintf(nfrontp,
+ "%c%c%c%c%c%c",
+ IAC, SB, TELOPT_LFLOW,
+ flowmode ? LFLOW_ON
+ : LFLOW_OFF,
+ IAC, SE);
+ nfrontp += 6;
+ }
+ }
+ pcc--;
+ ptyip = ptyibuf+1;
+#else /* defined(CRAY2) && defined(UNICOS5) */
+ if (!uselinemode) {
+ unpcc = pcc;
+ unptyip = ptyibuf;
+ pcc = term_output(&unptyip, ptyibuf2,
+ &unpcc, BUFSIZ);
+ ptyip = ptyibuf2;
+ } else
+ ptyip = ptyibuf;
+#endif /* defined(CRAY2) && defined(UNICOS5) */
+ }
+ }
+
+ while (pcc > 0) {
+ if ((&netobuf[BUFSIZ] - nfrontp) < 2)
+ break;
+ c = *ptyip++ & 0377, pcc--;
+ if (c == IAC)
+ *nfrontp++ = c;
+#if defined(CRAY2) && defined(UNICOS5)
+ else if (c == '\n' &&
+ my_state_is_wont(TELOPT_BINARY) && newmap)
+ *nfrontp++ = '\r';
+#endif /* defined(CRAY2) && defined(UNICOS5) */
+ *nfrontp++ = c;
+ if ((c == '\r') && (my_state_is_wont(TELOPT_BINARY))) {
+ if (pcc > 0 && ((*ptyip & 0377) == '\n')) {
+ *nfrontp++ = *ptyip++ & 0377;
+ pcc--;
+ } else
+ *nfrontp++ = '\0';
+ }
+ }
+#if defined(CRAY2) && defined(UNICOS5)
+ /*
+ * If chars were left over from the terminal driver,
+ * note their existence.
+ */
+ if (!uselinemode && unpcc) {
+ pcc = unpcc;
+ unpcc = 0;
+ ptyip = unptyip;
+ }
+#endif /* defined(CRAY2) && defined(UNICOS5) */
+
+ if (FD_ISSET(f, &obits) && (nfrontp - nbackp) > 0)
+ netflush();
+ if (ncc > 0)
+ telrcv();
+ if (FD_ISSET(p, &obits) && (pfrontp - pbackp) > 0)
+ ptyflush();
+ }
+ cleanup(0);
+} /* end of telnet */
+
+#ifndef TCSIG
+# ifdef TIOCSIG
+# define TCSIG TIOCSIG
+# endif
+#endif
+
+#ifdef STREAMSPTY
+
+int flowison = -1; /* current state of flow: -1 is unknown */
+
+int readstream(p, ibuf, bufsize)
+ int p;
+ char *ibuf;
+ int bufsize;
+{
+ int flags = 0;
+ int ret = 0;
+ struct termios *tsp;
+ struct termio *tp;
+ struct iocblk *ip;
+ char vstop, vstart;
+ int ixon;
+ int newflow;
+
+ strbufc.maxlen = BUFSIZ;
+ strbufc.buf = ctlbuf;
+ strbufd.maxlen = bufsize-1;
+ strbufd.len = 0;
+ strbufd.buf = ibuf+1;
+ ibuf[0] = 0;
+
+ ret = getmsg(p, &strbufc, &strbufd, &flags);
+ if (ret < 0) /* error of some sort -- probably EAGAIN */
+ return(-1);
+
+ if (strbufc.len <= 0 || ctlbuf[0] == M_DATA) {
+ /* data message */
+ if (strbufd.len > 0) { /* real data */
+ return(strbufd.len + 1); /* count header char */
+ } else {
+ /* nothing there */
+ errno = EAGAIN;
+ return(-1);
+ }
+ }
+
+ /*
+ * It's a control message. Return 1, to look at the flag we set
+ */
+
+ switch (ctlbuf[0]) {
+ case M_FLUSH:
+ if (ibuf[1] & FLUSHW)
+ ibuf[0] = TIOCPKT_FLUSHWRITE;
+ return(1);
+
+ case M_IOCTL:
+ ip = (struct iocblk *) (ibuf+1);
+
+ switch (ip->ioc_cmd) {
+ case TCSETS:
+ case TCSETSW:
+ case TCSETSF:
+ tsp = (struct termios *)
+ (ibuf+1 + sizeof(struct iocblk));
+ vstop = tsp->c_cc[VSTOP];
+ vstart = tsp->c_cc[VSTART];
+ ixon = tsp->c_iflag & IXON;
+ break;
+ case TCSETA:
+ case TCSETAW:
+ case TCSETAF:
+ tp = (struct termio *) (ibuf+1 + sizeof(struct iocblk));
+ vstop = tp->c_cc[VSTOP];
+ vstart = tp->c_cc[VSTART];
+ ixon = tp->c_iflag & IXON;
+ break;
+ default:
+ errno = EAGAIN;
+ return(-1);
+ }
+
+ newflow = (ixon && (vstart == 021) && (vstop == 023)) ? 1 : 0;
+ if (newflow != flowison) { /* it's a change */
+ flowison = newflow;
+ ibuf[0] = newflow ? TIOCPKT_DOSTOP : TIOCPKT_NOSTOP;
+ return(1);
+ }
+ }
+
+ /* nothing worth doing anything about */
+ errno = EAGAIN;
+ return(-1);
+}
+#endif /* STREAMSPTY */
+
+/*
+ * Send interrupt to process on other side of pty.
+ * If it is in raw mode, just write NULL;
+ * otherwise, write intr char.
+ */
+ void
+interrupt()
+{
+ ptyflush(); /* half-hearted */
+
+#ifdef TCSIG
+ (void) ioctl(pty, TCSIG, (char *)SIGINT);
+#else /* TCSIG */
+ init_termbuf();
+ *pfrontp++ = slctab[SLC_IP].sptr ?
+ (unsigned char)*slctab[SLC_IP].sptr : '\177';
+#endif /* TCSIG */
+}
+
+/*
+ * Send quit to process on other side of pty.
+ * If it is in raw mode, just write NULL;
+ * otherwise, write quit char.
+ */
+ void
+sendbrk()
+{
+ ptyflush(); /* half-hearted */
+#ifdef TCSIG
+ (void) ioctl(pty, TCSIG, (char *)SIGQUIT);
+#else /* TCSIG */
+ init_termbuf();
+ *pfrontp++ = slctab[SLC_ABORT].sptr ?
+ (unsigned char)*slctab[SLC_ABORT].sptr : '\034';
+#endif /* TCSIG */
+}
+
+ void
+sendsusp()
+{
+#ifdef SIGTSTP
+ ptyflush(); /* half-hearted */
+# ifdef TCSIG
+ (void) ioctl(pty, TCSIG, (char *)SIGTSTP);
+# else /* TCSIG */
+ *pfrontp++ = slctab[SLC_SUSP].sptr ?
+ (unsigned char)*slctab[SLC_SUSP].sptr : '\032';
+# endif /* TCSIG */
+#endif /* SIGTSTP */
+}
+
+/*
+ * When we get an AYT, if ^T is enabled, use that. Otherwise,
+ * just send back "[Yes]".
+ */
+ void
+recv_ayt()
+{
+#if defined(SIGINFO) && defined(TCSIG)
+ if (slctab[SLC_AYT].sptr && *slctab[SLC_AYT].sptr != _POSIX_VDISABLE) {
+ (void) ioctl(pty, TCSIG, (char *)SIGINFO);
+ return;
+ }
+#endif
+ (void) strcpy(nfrontp, "\r\n[Yes]\r\n");
+ nfrontp += 9;
+}
+
+ void
+doeof()
+{
+ init_termbuf();
+
+#if defined(LINEMODE) && defined(USE_TERMIO) && (VEOF == VMIN)
+ if (!tty_isediting()) {
+ extern char oldeofc;
+ *pfrontp++ = oldeofc;
+ return;
+ }
+#endif
+ *pfrontp++ = slctab[SLC_EOF].sptr ?
+ (unsigned char)*slctab[SLC_EOF].sptr : '\004';
+}
--- /dev/null
+/*
+ * Copyright (c) 1989 The Regents of the University of California.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * @(#)telnetd.h 5.3 (Berkeley) 3/1/91
+ */
+
+
+#include "defs.h"
+#include "ext.h"
+
+#ifdef DIAGNOSTICS
+#define DIAG(a,b) if (diagnostic & (a)) b
+#else
+#define DIAG(a,b)
+#endif
+
+/* other external variables */
+extern char **environ;
+extern int errno;
+
--- /dev/null
+/*
+ * Copyright (c) 1989 Regents of the University of California.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef lint
+static char sccsid[] = "@(#)termstat.c 5.12 (Berkeley) 1/19/93";
+#endif /* not lint */
+
+#include "telnetd.h"
+
+/*
+ * local variables
+ */
+int def_tspeed = -1, def_rspeed = -1;
+#ifdef TIOCSWINSZ
+int def_row = 0, def_col = 0;
+#endif
+#ifdef LINEMODE
+static int _terminit = 0;
+#endif /* LINEMODE */
+
+#if defined(CRAY2) && defined(UNICOS5)
+int newmap = 1; /* nonzero if \n maps to ^M^J */
+#endif
+
+#ifdef LINEMODE
+/*
+ * localstat
+ *
+ * This function handles all management of linemode.
+ *
+ * Linemode allows the client to do the local editing of data
+ * and send only complete lines to the server. Linemode state is
+ * based on the state of the pty driver. If the pty is set for
+ * external processing, then we can use linemode. Further, if we
+ * can use real linemode, then we can look at the edit control bits
+ * in the pty to determine what editing the client should do.
+ *
+ * Linemode support uses the following state flags to keep track of
+ * current and desired linemode state.
+ * alwayslinemode : true if -l was specified on the telnetd
+ * command line. It means to have linemode on as much as
+ * possible.
+ *
+ * lmodetype: signifies whether the client can
+ * handle real linemode, or if use of kludgeomatic linemode
+ * is preferred. It will be set to one of the following:
+ * REAL_LINEMODE : use linemode option
+ * NO_KLUDGE : don't initiate kludge linemode.
+ * KLUDGE_LINEMODE : use kludge linemode
+ * NO_LINEMODE : client is ignorant of linemode
+ *
+ * linemode, uselinemode : linemode is true if linemode
+ * is currently on, uselinemode is the state that we wish
+ * to be in. If another function wishes to turn linemode
+ * on or off, it sets or clears uselinemode.
+ *
+ * editmode, useeditmode : like linemode/uselinemode, but
+ * these contain the edit mode states (edit and trapsig).
+ *
+ * The state variables correspond to some of the state information
+ * in the pty.
+ * linemode:
+ * In real linemode, this corresponds to whether the pty
+ * expects external processing of incoming data.
+ * In kludge linemode, this more closely corresponds to the
+ * whether normal processing is on or not. (ICANON in
+ * system V, or COOKED mode in BSD.)
+ * If the -l option was specified (alwayslinemode), then
+ * an attempt is made to force external processing on at
+ * all times.
+ *
+ * The following heuristics are applied to determine linemode
+ * handling within the server.
+ * 1) Early on in starting up the server, an attempt is made
+ * to negotiate the linemode option. If this succeeds
+ * then lmodetype is set to REAL_LINEMODE and all linemode
+ * processing occurs in the context of the linemode option.
+ * 2) If the attempt to negotiate the linemode option failed,
+ * and the "-k" (don't initiate kludge linemode) isn't set,
+ * then we try to use kludge linemode. We test for this
+ * capability by sending "do Timing Mark". If a positive
+ * response comes back, then we assume that the client
+ * understands kludge linemode (ech!) and the
+ * lmodetype flag is set to KLUDGE_LINEMODE.
+ * 3) Otherwise, linemode is not supported at all and
+ * lmodetype remains set to NO_LINEMODE (which happens
+ * to be 0 for convenience).
+ * 4) At any time a command arrives that implies a higher
+ * state of linemode support in the client, we move to that
+ * linemode support.
+ *
+ * A short explanation of kludge linemode is in order here.
+ * 1) The heuristic to determine support for kludge linemode
+ * is to send a do timing mark. We assume that a client
+ * that supports timing marks also supports kludge linemode.
+ * A risky proposition at best.
+ * 2) Further negotiation of linemode is done by changing the
+ * the server's state regarding SGA. If server will SGA,
+ * then linemode is off, if server won't SGA, then linemode
+ * is on.
+ */
+ void
+localstat()
+{
+ void netflush();
+ int need_will_echo = 0;
+
+#if defined(CRAY2) && defined(UNICOS5)
+ /*
+ * Keep track of that ol' CR/NL mapping while we're in the
+ * neighborhood.
+ */
+ newmap = tty_isnewmap();
+#endif /* defined(CRAY2) && defined(UNICOS5) */
+
+ /*
+ * Check for state of BINARY options.
+ */
+ if (tty_isbinaryin()) {
+ if (his_want_state_is_wont(TELOPT_BINARY))
+ send_do(TELOPT_BINARY, 1);
+ } else {
+ if (his_want_state_is_will(TELOPT_BINARY))
+ send_dont(TELOPT_BINARY, 1);
+ }
+
+ if (tty_isbinaryout()) {
+ if (my_want_state_is_wont(TELOPT_BINARY))
+ send_will(TELOPT_BINARY, 1);
+ } else {
+ if (my_want_state_is_will(TELOPT_BINARY))
+ send_wont(TELOPT_BINARY, 1);
+ }
+
+ /*
+ * Check for changes to flow control if client supports it.
+ */
+ if (his_state_is_will(TELOPT_LFLOW)) {
+ if (tty_flowmode() != flowmode) {
+ flowmode = tty_flowmode();
+ (void) sprintf(nfrontp, "%c%c%c%c%c%c",
+ IAC, SB, TELOPT_LFLOW,
+ flowmode ? LFLOW_ON : LFLOW_OFF,
+ IAC, SE);
+ nfrontp += 6;
+ }
+ if (tty_restartany() != restartany) {
+ restartany = tty_restartany();
+ (void) sprintf(nfrontp, "%c%c%c%c%c%c",
+ IAC, SB, TELOPT_LFLOW,
+ restartany ? LFLOW_RESTART_ANY
+ : LFLOW_RESTART_XON,
+ IAC, SE);
+ nfrontp += 6;
+ }
+ }
+
+ /*
+ * Check linemode on/off state
+ */
+ uselinemode = tty_linemode();
+
+ /*
+ * If alwayslinemode is on, and pty is changing to turn it off, then
+ * force linemode back on.
+ */
+ if (alwayslinemode && linemode && !uselinemode) {
+ uselinemode = 1;
+ tty_setlinemode(uselinemode);
+ }
+
+#if defined(ENCRYPTION)
+ /*
+ * If the terminal is not echoing, but editing is enabled,
+ * something like password input is going to happen, so
+ * if we the other side is not currently sending encrypted
+ * data, ask the other side to start encrypting.
+ */
+ if (his_state_is_will(TELOPT_ENCRYPT)) {
+ static int enc_passwd = 0;
+ if (uselinemode && !tty_isecho() && tty_isediting()
+ && (enc_passwd == 0) && !decrypt_input) {
+ encrypt_send_request_start();
+ enc_passwd = 1;
+ } else if (enc_passwd) {
+ encrypt_send_request_end();
+ enc_passwd = 0;
+ }
+ }
+#endif
+
+ /*
+ * Do echo mode handling as soon as we know what the
+ * linemode is going to be.
+ * If the pty has echo turned off, then tell the client that
+ * the server will echo. If echo is on, then the server
+ * will echo if in character mode, but in linemode the
+ * client should do local echoing. The state machine will
+ * not send anything if it is unnecessary, so don't worry
+ * about that here.
+ *
+ * If we need to send the WILL ECHO (because echo is off),
+ * then delay that until after we have changed the MODE.
+ * This way, when the user is turning off both editing
+ * and echo, the client will get editing turned off first.
+ * This keeps the client from going into encryption mode
+ * and then right back out if it is doing auto-encryption
+ * when passwords are being typed.
+ */
+ if (uselinemode) {
+ if (tty_isecho())
+ send_wont(TELOPT_ECHO, 1);
+ else
+ need_will_echo = 1;
+#ifdef KLUDGELINEMODE
+ if (lmodetype == KLUDGE_OK)
+ lmodetype = KLUDGE_LINEMODE;
+#endif
+ }
+
+ /*
+ * If linemode is being turned off, send appropriate
+ * command and then we're all done.
+ */
+ if (!uselinemode && linemode) {
+# ifdef KLUDGELINEMODE
+ if (lmodetype == REAL_LINEMODE) {
+# endif /* KLUDGELINEMODE */
+ send_dont(TELOPT_LINEMODE, 1);
+# ifdef KLUDGELINEMODE
+ } else if (lmodetype == KLUDGE_LINEMODE)
+ send_will(TELOPT_SGA, 1);
+# endif /* KLUDGELINEMODE */
+ send_will(TELOPT_ECHO, 1);
+ linemode = uselinemode;
+ goto done;
+ }
+
+# ifdef KLUDGELINEMODE
+ /*
+ * If using real linemode check edit modes for possible later use.
+ * If we are in kludge linemode, do the SGA negotiation.
+ */
+ if (lmodetype == REAL_LINEMODE) {
+# endif /* KLUDGELINEMODE */
+ useeditmode = 0;
+ if (tty_isediting())
+ useeditmode |= MODE_EDIT;
+ if (tty_istrapsig())
+ useeditmode |= MODE_TRAPSIG;
+ if (tty_issofttab())
+ useeditmode |= MODE_SOFT_TAB;
+ if (tty_islitecho())
+ useeditmode |= MODE_LIT_ECHO;
+# ifdef KLUDGELINEMODE
+ } else if (lmodetype == KLUDGE_LINEMODE) {
+ if (tty_isediting() && uselinemode)
+ send_wont(TELOPT_SGA, 1);
+ else
+ send_will(TELOPT_SGA, 1);
+ }
+# endif /* KLUDGELINEMODE */
+
+ /*
+ * Negotiate linemode on if pty state has changed to turn it on.
+ * Send appropriate command and send along edit mode, then all done.
+ */
+ if (uselinemode && !linemode) {
+# ifdef KLUDGELINEMODE
+ if (lmodetype == KLUDGE_LINEMODE) {
+ send_wont(TELOPT_SGA, 1);
+ } else if (lmodetype == REAL_LINEMODE) {
+# endif /* KLUDGELINEMODE */
+ send_do(TELOPT_LINEMODE, 1);
+ /* send along edit modes */
+ (void) sprintf(nfrontp, "%c%c%c%c%c%c%c", IAC, SB,
+ TELOPT_LINEMODE, LM_MODE, useeditmode,
+ IAC, SE);
+ nfrontp += 7;
+ editmode = useeditmode;
+# ifdef KLUDGELINEMODE
+ }
+# endif /* KLUDGELINEMODE */
+ linemode = uselinemode;
+ goto done;
+ }
+
+# ifdef KLUDGELINEMODE
+ /*
+ * None of what follows is of any value if not using
+ * real linemode.
+ */
+ if (lmodetype < REAL_LINEMODE)
+ goto done;
+# endif /* KLUDGELINEMODE */
+
+ if (linemode && his_state_is_will(TELOPT_LINEMODE)) {
+ /*
+ * If edit mode changed, send edit mode.
+ */
+ if (useeditmode != editmode) {
+ /*
+ * Send along appropriate edit mode mask.
+ */
+ (void) sprintf(nfrontp, "%c%c%c%c%c%c%c", IAC, SB,
+ TELOPT_LINEMODE, LM_MODE, useeditmode,
+ IAC, SE);
+ nfrontp += 7;
+ editmode = useeditmode;
+ }
+
+
+ /*
+ * Check for changes to special characters in use.
+ */
+ start_slc(0);
+ check_slc();
+ (void) end_slc(0);
+ }
+
+done:
+ if (need_will_echo)
+ send_will(TELOPT_ECHO, 1);
+ /*
+ * Some things should be deferred until after the pty state has
+ * been set by the local process. Do those things that have been
+ * deferred now. This only happens once.
+ */
+ if (_terminit == 0) {
+ _terminit = 1;
+ defer_terminit();
+ }
+
+ netflush();
+ set_termbuf();
+ return;
+
+} /* end of localstat */
+#endif /* LINEMODE */
+
+
+/*
+ * clientstat
+ *
+ * Process linemode related requests from the client.
+ * Client can request a change to only one of linemode, editmode or slc's
+ * at a time, and if using kludge linemode, then only linemode may be
+ * affected.
+ */
+ void
+clientstat(code, parm1, parm2)
+ register int code, parm1, parm2;
+{
+ void netflush();
+
+ /*
+ * Get a copy of terminal characteristics.
+ */
+ init_termbuf();
+
+ /*
+ * Process request from client. code tells what it is.
+ */
+ switch (code) {
+#ifdef LINEMODE
+ case TELOPT_LINEMODE:
+ /*
+ * Don't do anything unless client is asking us to change
+ * modes.
+ */
+ uselinemode = (parm1 == WILL);
+ if (uselinemode != linemode) {
+# ifdef KLUDGELINEMODE
+ /*
+ * If using kludge linemode, make sure that
+ * we can do what the client asks.
+ * We can not turn off linemode if alwayslinemode
+ * and the ICANON bit is set.
+ */
+ if (lmodetype == KLUDGE_LINEMODE) {
+ if (alwayslinemode && tty_isediting()) {
+ uselinemode = 1;
+ }
+ }
+
+ /*
+ * Quit now if we can't do it.
+ */
+ if (uselinemode == linemode)
+ return;
+
+ /*
+ * If using real linemode and linemode is being
+ * turned on, send along the edit mode mask.
+ */
+ if (lmodetype == REAL_LINEMODE && uselinemode)
+# else /* KLUDGELINEMODE */
+ if (uselinemode)
+# endif /* KLUDGELINEMODE */
+ {
+ useeditmode = 0;
+ if (tty_isediting())
+ useeditmode |= MODE_EDIT;
+ if (tty_istrapsig)
+ useeditmode |= MODE_TRAPSIG;
+ if (tty_issofttab())
+ useeditmode |= MODE_SOFT_TAB;
+ if (tty_islitecho())
+ useeditmode |= MODE_LIT_ECHO;
+ (void) sprintf(nfrontp, "%c%c%c%c%c%c%c", IAC,
+ SB, TELOPT_LINEMODE, LM_MODE,
+ useeditmode, IAC, SE);
+ nfrontp += 7;
+ editmode = useeditmode;
+ }
+
+
+ tty_setlinemode(uselinemode);
+
+ linemode = uselinemode;
+
+ if (!linemode)
+ send_will(TELOPT_ECHO, 1);
+ }
+ break;
+
+ case LM_MODE:
+ {
+ register int ack, changed;
+
+ /*
+ * Client has sent along a mode mask. If it agrees with
+ * what we are currently doing, ignore it; if not, it could
+ * be viewed as a request to change. Note that the server
+ * will change to the modes in an ack if it is different from
+ * what we currently have, but we will not ack the ack.
+ */
+ useeditmode &= MODE_MASK;
+ ack = (useeditmode & MODE_ACK);
+ useeditmode &= ~MODE_ACK;
+
+ if (changed = (useeditmode ^ editmode)) {
+ /*
+ * This check is for a timing problem. If the
+ * state of the tty has changed (due to the user
+ * application) we need to process that info
+ * before we write in the state contained in the
+ * ack!!! This gets out the new MODE request,
+ * and when the ack to that command comes back
+ * we'll set it and be in the right mode.
+ */
+ if (ack)
+ localstat();
+ if (changed & MODE_EDIT)
+ tty_setedit(useeditmode & MODE_EDIT);
+
+ if (changed & MODE_TRAPSIG)
+ tty_setsig(useeditmode & MODE_TRAPSIG);
+
+ if (changed & MODE_SOFT_TAB)
+ tty_setsofttab(useeditmode & MODE_SOFT_TAB);
+
+ if (changed & MODE_LIT_ECHO)
+ tty_setlitecho(useeditmode & MODE_LIT_ECHO);
+
+ set_termbuf();
+
+ if (!ack) {
+ (void) sprintf(nfrontp, "%c%c%c%c%c%c%c", IAC,
+ SB, TELOPT_LINEMODE, LM_MODE,
+ useeditmode|MODE_ACK,
+ IAC, SE);
+ nfrontp += 7;
+ }
+
+ editmode = useeditmode;
+ }
+
+ break;
+
+ } /* end of case LM_MODE */
+#endif /* LINEMODE */
+
+ case TELOPT_NAWS:
+#ifdef TIOCSWINSZ
+ {
+ struct winsize ws;
+
+ def_col = parm1;
+ def_row = parm2;
+#ifdef LINEMODE
+ /*
+ * Defer changing window size until after terminal is
+ * initialized.
+ */
+ if (terminit() == 0)
+ return;
+#endif /* LINEMODE */
+
+ /*
+ * Change window size as requested by client.
+ */
+
+ ws.ws_col = parm1;
+ ws.ws_row = parm2;
+ (void) ioctl(pty, TIOCSWINSZ, (char *)&ws);
+ }
+#endif /* TIOCSWINSZ */
+
+ break;
+
+ case TELOPT_TSPEED:
+ {
+ def_tspeed = parm1;
+ def_rspeed = parm2;
+#ifdef LINEMODE
+ /*
+ * Defer changing the terminal speed.
+ */
+ if (terminit() == 0)
+ return;
+#endif /* LINEMODE */
+ /*
+ * Change terminal speed as requested by client.
+ * We set the receive speed first, so that if we can't
+ * store seperate receive and transmit speeds, the transmit
+ * speed will take precedence.
+ */
+ tty_rspeed(parm2);
+ tty_tspeed(parm1);
+ set_termbuf();
+
+ break;
+
+ } /* end of case TELOPT_TSPEED */
+
+ default:
+ /* What? */
+ break;
+ } /* end of switch */
+
+#if defined(CRAY2) && defined(UNICOS5)
+ /*
+ * Just in case of the likely event that we changed the pty state.
+ */
+ rcv_ioctl();
+#endif /* defined(CRAY2) && defined(UNICOS5) */
+
+ netflush();
+
+} /* end of clientstat */
+
+#if defined(CRAY2) && defined(UNICOS5)
+ void
+termstat()
+{
+ needtermstat = 1;
+}
+
+ void
+_termstat()
+{
+ needtermstat = 0;
+ init_termbuf();
+ localstat();
+ rcv_ioctl();
+}
+#endif /* defined(CRAY2) && defined(UNICOS5) */
+
+#ifdef LINEMODE
+/*
+ * defer_terminit
+ *
+ * Some things should not be done until after the login process has started
+ * and all the pty modes are set to what they are supposed to be. This
+ * function is called when the pty state has been processed for the first time.
+ * It calls other functions that do things that were deferred in each module.
+ */
+ void
+defer_terminit()
+{
+
+ /*
+ * local stuff that got deferred.
+ */
+ if (def_tspeed != -1) {
+ clientstat(TELOPT_TSPEED, def_tspeed, def_rspeed);
+ def_tspeed = def_rspeed = 0;
+ }
+
+#ifdef TIOCSWINSZ
+ if (def_col || def_row) {
+ struct winsize ws;
+
+ bzero((char *)&ws, sizeof(ws));
+ ws.ws_col = def_col;
+ ws.ws_row = def_row;
+ (void) ioctl(pty, TIOCSWINSZ, (char *)&ws);
+ }
+#endif
+
+ /*
+ * The only other module that currently defers anything.
+ */
+ deferslc();
+
+} /* end of defer_terminit */
+
+/*
+ * terminit
+ *
+ * Returns true if the pty state has been processed yet.
+ */
+ int
+terminit()
+{
+ return(_terminit);
+
+} /* end of terminit */
+#endif /* LINEMODE */
--- /dev/null
+/*
+ * Copyright (c) 1989 Regents of the University of California.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef lint
+static char sccsid[] = "@(#)utility.c 5.10 (Berkeley) 1/19/93";
+#endif /* not lint */
+
+#define PRINTOPTIONS
+#include "telnetd.h"
+
+/*
+ * utility functions performing io related tasks
+ */
+
+/*
+ * ttloop
+ *
+ * A small subroutine to flush the network output buffer, get some data
+ * from the network, and pass it through the telnet state machine. We
+ * also flush the pty input buffer (by dropping its data) if it becomes
+ * too full.
+ */
+
+ void
+ttloop()
+{
+ void netflush();
+
+ DIAG(TD_REPORT, {sprintf(nfrontp, "td: ttloop\r\n");
+ nfrontp += strlen(nfrontp);});
+ if (nfrontp-nbackp) {
+ netflush();
+ }
+ ncc = read(net, netibuf, sizeof netibuf);
+ if (ncc < 0) {
+ syslog(LOG_INFO, "ttloop: read: %m\n");
+ exit(1);
+ } else if (ncc == 0) {
+ syslog(LOG_INFO, "ttloop: peer died: %m\n");
+ exit(1);
+ }
+ DIAG(TD_REPORT, {sprintf(nfrontp, "td: ttloop read %d chars\r\n", ncc);
+ nfrontp += strlen(nfrontp);});
+ netip = netibuf;
+ telrcv(); /* state machine */
+ if (ncc > 0) {
+ pfrontp = pbackp = ptyobuf;
+ telrcv();
+ }
+} /* end of ttloop */
+
+/*
+ * Check a descriptor to see if out of band data exists on it.
+ */
+ int
+stilloob(s)
+ int s; /* socket number */
+{
+ static struct timeval timeout = { 0 };
+ fd_set excepts;
+ int value;
+
+ do {
+ FD_ZERO(&excepts);
+ FD_SET(s, &excepts);
+ value = select(s+1, (fd_set *)0, (fd_set *)0, &excepts, &timeout);
+ } while ((value == -1) && (errno == EINTR));
+
+ if (value < 0) {
+ fatalperror(pty, "select");
+ }
+ if (FD_ISSET(s, &excepts)) {
+ return 1;
+ } else {
+ return 0;
+ }
+}
+
+ void
+ptyflush()
+{
+ int n;
+
+ if ((n = pfrontp - pbackp) > 0) {
+ DIAG((TD_REPORT | TD_PTYDATA),
+ { sprintf(nfrontp, "td: ptyflush %d chars\r\n", n);
+ nfrontp += strlen(nfrontp); });
+ DIAG(TD_PTYDATA, printdata("pd", pbackp, n));
+ n = write(pty, pbackp, n);
+ }
+ if (n < 0) {
+ if (errno == EWOULDBLOCK || errno == EINTR)
+ return;
+ cleanup(0);
+ }
+ pbackp += n;
+ if (pbackp == pfrontp)
+ pbackp = pfrontp = ptyobuf;
+}
+
+/*
+ * nextitem()
+ *
+ * Return the address of the next "item" in the TELNET data
+ * stream. This will be the address of the next character if
+ * the current address is a user data character, or it will
+ * be the address of the character following the TELNET command
+ * if the current address is a TELNET IAC ("I Am a Command")
+ * character.
+ */
+ char *
+nextitem(current)
+ char *current;
+{
+ if ((*current&0xff) != IAC) {
+ return current+1;
+ }
+ switch (*(current+1)&0xff) {
+ case DO:
+ case DONT:
+ case WILL:
+ case WONT:
+ return current+3;
+ case SB: /* loop forever looking for the SE */
+ {
+ register char *look = current+2;
+
+ for (;;) {
+ if ((*look++&0xff) == IAC) {
+ if ((*look++&0xff) == SE) {
+ return look;
+ }
+ }
+ }
+ }
+ default:
+ return current+2;
+ }
+} /* end of nextitem */
+
+
+/*
+ * netclear()
+ *
+ * We are about to do a TELNET SYNCH operation. Clear
+ * the path to the network.
+ *
+ * Things are a bit tricky since we may have sent the first
+ * byte or so of a previous TELNET command into the network.
+ * So, we have to scan the network buffer from the beginning
+ * until we are up to where we want to be.
+ *
+ * A side effect of what we do, just to keep things
+ * simple, is to clear the urgent data pointer. The principal
+ * caller should be setting the urgent data pointer AFTER calling
+ * us in any case.
+ */
+ void
+netclear()
+{
+ register char *thisitem, *next;
+ char *good;
+#define wewant(p) ((nfrontp > p) && ((*p&0xff) == IAC) && \
+ ((*(p+1)&0xff) != EC) && ((*(p+1)&0xff) != EL))
+
+#if defined(ENCRYPTION)
+ thisitem = nclearto > netobuf ? nclearto : netobuf;
+#else
+ thisitem = netobuf;
+#endif
+
+ while ((next = nextitem(thisitem)) <= nbackp) {
+ thisitem = next;
+ }
+
+ /* Now, thisitem is first before/at boundary. */
+
+#if defined(ENCRYPTION)
+ good = nclearto > netobuf ? nclearto : netobuf;
+#else
+ good = netobuf; /* where the good bytes go */
+#endif
+
+ while (nfrontp > thisitem) {
+ if (wewant(thisitem)) {
+ int length;
+
+ next = thisitem;
+ do {
+ next = nextitem(next);
+ } while (wewant(next) && (nfrontp > next));
+ length = next-thisitem;
+ bcopy(thisitem, good, length);
+ good += length;
+ thisitem = next;
+ } else {
+ thisitem = nextitem(thisitem);
+ }
+ }
+
+ nbackp = netobuf;
+ nfrontp = good; /* next byte to be sent */
+ neturg = 0;
+} /* end of netclear */
+
+/*
+ * netflush
+ * Send as much data as possible to the network,
+ * handling requests for urgent data.
+ */
+ void
+netflush()
+{
+ int n;
+ extern int not42;
+
+ if ((n = nfrontp - nbackp) > 0) {
+ DIAG(TD_REPORT,
+ { sprintf(nfrontp, "td: netflush %d chars\r\n", n);
+ n += strlen(nfrontp); /* get count first */
+ nfrontp += strlen(nfrontp); /* then move pointer */
+ });
+#if defined(ENCRYPTION)
+ if (encrypt_output) {
+ char *s = nclearto ? nclearto : nbackp;
+ if (nfrontp - s > 0) {
+ (*encrypt_output)((unsigned char *)s, nfrontp-s);
+ nclearto = nfrontp;
+ }
+ }
+#endif
+ /*
+ * if no urgent data, or if the other side appears to be an
+ * old 4.2 client (and thus unable to survive TCP urgent data),
+ * write the entire buffer in non-OOB mode.
+ */
+ if ((neturg == 0) || (not42 == 0)) {
+ n = write(net, nbackp, n); /* normal write */
+ } else {
+ n = neturg - nbackp;
+ /*
+ * In 4.2 (and 4.3) systems, there is some question about
+ * what byte in a sendOOB operation is the "OOB" data.
+ * To make ourselves compatible, we only send ONE byte
+ * out of band, the one WE THINK should be OOB (though
+ * we really have more the TCP philosophy of urgent data
+ * rather than the Unix philosophy of OOB data).
+ */
+ if (n > 1) {
+ n = send(net, nbackp, n-1, 0); /* send URGENT all by itself */
+ } else {
+ n = send(net, nbackp, n, MSG_OOB); /* URGENT data */
+ }
+ }
+ }
+ if (n < 0) {
+ if (errno == EWOULDBLOCK || errno == EINTR)
+ return;
+ cleanup(0);
+ }
+ nbackp += n;
+#if defined(ENCRYPTION)
+ if (nbackp > nclearto)
+ nclearto = 0;
+#endif
+ if (nbackp >= neturg) {
+ neturg = 0;
+ }
+ if (nbackp == nfrontp) {
+ nbackp = nfrontp = netobuf;
+#if defined(ENCRYPTION)
+ nclearto = 0;
+#endif
+ }
+ return;
+} /* end of netflush */
+
+
+/*
+ * writenet
+ *
+ * Just a handy little function to write a bit of raw data to the net.
+ * It will force a transmit of the buffer if necessary
+ *
+ * arguments
+ * ptr - A pointer to a character string to write
+ * len - How many bytes to write
+ */
+ void
+writenet(ptr, len)
+ register unsigned char *ptr;
+ register int len;
+{
+ /* flush buffer if no room for new data) */
+ if ((&netobuf[BUFSIZ] - nfrontp) < len) {
+ /* if this fails, don't worry, buffer is a little big */
+ netflush();
+ }
+
+ bcopy(ptr, nfrontp, len);
+ nfrontp += len;
+
+} /* end of writenet */
+
+
+/*
+ * miscellaneous functions doing a variety of little jobs follow ...
+ */
+
+
+ void
+fatal(f, msg)
+ int f;
+ char *msg;
+{
+ char buf[BUFSIZ];
+
+ (void) sprintf(buf, "telnetd: %s.\r\n", msg);
+#if defined(ENCRYPTION)
+ if (encrypt_output) {
+ /*
+ * Better turn off encryption first....
+ * Hope it flushes...
+ */
+ encrypt_send_end();
+ netflush();
+ }
+#endif
+ (void) write(f, buf, (int)strlen(buf));
+ sleep(1); /*XXX*/
+ exit(1);
+}
+
+ void
+fatalperror(f, msg)
+ int f;
+ char *msg;
+{
+ char buf[BUFSIZ], *strerror();
+
+ (void) sprintf(buf, "%s: %s\r\n", msg, strerror(errno));
+ fatal(f, buf);
+}
+
+char editedhost[32];
+
+ void
+edithost(pat, host)
+ register char *pat;
+ register char *host;
+{
+ register char *res = editedhost;
+ char *strncpy();
+
+ if (!pat)
+ pat = "";
+ while (*pat) {
+ switch (*pat) {
+
+ case '#':
+ if (*host)
+ host++;
+ break;
+
+ case '@':
+ if (*host)
+ *res++ = *host++;
+ break;
+
+ default:
+ *res++ = *pat;
+ break;
+ }
+ if (res == &editedhost[sizeof editedhost - 1]) {
+ *res = '\0';
+ return;
+ }
+ pat++;
+ }
+ if (*host)
+ (void) strncpy(res, host,
+ sizeof editedhost - (res - editedhost) -1);
+ else
+ *res = '\0';
+ editedhost[sizeof editedhost - 1] = '\0';
+}
+
+static char *putlocation;
+
+ void
+putstr(s)
+ register char *s;
+{
+
+ while (*s)
+ putchr(*s++);
+}
+
+ void
+putchr(cc)
+ int cc;
+{
+ *putlocation++ = cc;
+}
+
+/*
+ * This is split on two lines so that SCCS will not see the M
+ * between two % signs and expand it...
+ */
+static char fmtstr[] = { "%l:%M\
+%P on %A, %d %B %Y" };
+
+ void
+putf(cp, where)
+ register char *cp;
+ char *where;
+{
+ char *slash;
+ time_t t;
+ char db[100];
+ extern char *rindex();
+
+ putlocation = where;
+
+ while (*cp) {
+ if (*cp != '%') {
+ putchr(*cp++);
+ continue;
+ }
+ switch (*++cp) {
+
+ case 't':
+#ifdef STREAMSPTY
+ /* names are like /dev/pts/2 -- we want pts/2 */
+ slash = index(line+1, '/');
+#else
+ slash = rindex(line, '/');
+#endif
+ if (slash == (char *) 0)
+ putstr(line);
+ else
+ putstr(&slash[1]);
+ break;
+
+ case 'h':
+ putstr(editedhost);
+ break;
+
+ case 'd':
+ (void)time(&t);
+ (void)strftime(db, sizeof(db), fmtstr, localtime(&t));
+ putstr(db);
+ break;
+
+ case '%':
+ putchr('%');
+ break;
+ }
+ cp++;
+ }
+}
+
+#ifdef DIAGNOSTICS
+/*
+ * Print telnet options and commands in plain text, if possible.
+ */
+ void
+printoption(fmt, option)
+ register char *fmt;
+ register int option;
+{
+ if (TELOPT_OK(option))
+ sprintf(nfrontp, "%s %s\r\n", fmt, TELOPT(option));
+ else if (TELCMD_OK(option))
+ sprintf(nfrontp, "%s %s\r\n", fmt, TELCMD(option));
+ else
+ sprintf(nfrontp, "%s %d\r\n", fmt, option);
+ nfrontp += strlen(nfrontp);
+ return;
+}
+
+ void
+printsub(direction, pointer, length)
+ char direction; /* '<' or '>' */
+ unsigned char *pointer; /* where suboption data sits */
+ int length; /* length of suboption data */
+{
+ register int i;
+ char buf[512];
+
+ if (!(diagnostic & TD_OPTIONS))
+ return;
+
+ if (direction) {
+ sprintf(nfrontp, "td: %s suboption ",
+ direction == '<' ? "recv" : "send");
+ nfrontp += strlen(nfrontp);
+ if (length >= 3) {
+ register int j;
+
+ i = pointer[length-2];
+ j = pointer[length-1];
+
+ if (i != IAC || j != SE) {
+ sprintf(nfrontp, "(terminated by ");
+ nfrontp += strlen(nfrontp);
+ if (TELOPT_OK(i))
+ sprintf(nfrontp, "%s ", TELOPT(i));
+ else if (TELCMD_OK(i))
+ sprintf(nfrontp, "%s ", TELCMD(i));
+ else
+ sprintf(nfrontp, "%d ", i);
+ nfrontp += strlen(nfrontp);
+ if (TELOPT_OK(j))
+ sprintf(nfrontp, "%s", TELOPT(j));
+ else if (TELCMD_OK(j))
+ sprintf(nfrontp, "%s", TELCMD(j));
+ else
+ sprintf(nfrontp, "%d", j);
+ nfrontp += strlen(nfrontp);
+ sprintf(nfrontp, ", not IAC SE!) ");
+ nfrontp += strlen(nfrontp);
+ }
+ }
+ length -= 2;
+ }
+ if (length < 1) {
+ sprintf(nfrontp, "(Empty suboption???)");
+ nfrontp += strlen(nfrontp);
+ return;
+ }
+ switch (pointer[0]) {
+ case TELOPT_TTYPE:
+ sprintf(nfrontp, "TERMINAL-TYPE ");
+ nfrontp += strlen(nfrontp);
+ switch (pointer[1]) {
+ case TELQUAL_IS:
+ sprintf(nfrontp, "IS \"%.*s\"", length-2, (char *)pointer+2);
+ break;
+ case TELQUAL_SEND:
+ sprintf(nfrontp, "SEND");
+ break;
+ default:
+ sprintf(nfrontp,
+ "- unknown qualifier %d (0x%x).",
+ pointer[1], pointer[1]);
+ }
+ nfrontp += strlen(nfrontp);
+ break;
+ case TELOPT_TSPEED:
+ sprintf(nfrontp, "TERMINAL-SPEED");
+ nfrontp += strlen(nfrontp);
+ if (length < 2) {
+ sprintf(nfrontp, " (empty suboption???)");
+ nfrontp += strlen(nfrontp);
+ break;
+ }
+ switch (pointer[1]) {
+ case TELQUAL_IS:
+ sprintf(nfrontp, " IS %.*s", length-2, (char *)pointer+2);
+ nfrontp += strlen(nfrontp);
+ break;
+ default:
+ if (pointer[1] == 1)
+ sprintf(nfrontp, " SEND");
+ else
+ sprintf(nfrontp, " %d (unknown)", pointer[1]);
+ nfrontp += strlen(nfrontp);
+ for (i = 2; i < length; i++) {
+ sprintf(nfrontp, " ?%d?", pointer[i]);
+ nfrontp += strlen(nfrontp);
+ }
+ break;
+ }
+ break;
+
+ case TELOPT_LFLOW:
+ sprintf(nfrontp, "TOGGLE-FLOW-CONTROL");
+ nfrontp += strlen(nfrontp);
+ if (length < 2) {
+ sprintf(nfrontp, " (empty suboption???)");
+ nfrontp += strlen(nfrontp);
+ break;
+ }
+ switch (pointer[1]) {
+ case LFLOW_OFF:
+ sprintf(nfrontp, " OFF"); break;
+ case LFLOW_ON:
+ sprintf(nfrontp, " ON"); break;
+ case LFLOW_RESTART_ANY:
+ sprintf(nfrontp, " RESTART-ANY"); break;
+ case LFLOW_RESTART_XON:
+ sprintf(nfrontp, " RESTART-XON"); break;
+ default:
+ sprintf(nfrontp, " %d (unknown)", pointer[1]);
+ }
+ nfrontp += strlen(nfrontp);
+ for (i = 2; i < length; i++) {
+ sprintf(nfrontp, " ?%d?", pointer[i]);
+ nfrontp += strlen(nfrontp);
+ }
+ break;
+
+ case TELOPT_NAWS:
+ sprintf(nfrontp, "NAWS");
+ nfrontp += strlen(nfrontp);
+ if (length < 2) {
+ sprintf(nfrontp, " (empty suboption???)");
+ nfrontp += strlen(nfrontp);
+ break;
+ }
+ if (length == 2) {
+ sprintf(nfrontp, " ?%d?", pointer[1]);
+ nfrontp += strlen(nfrontp);
+ break;
+ }
+ sprintf(nfrontp, " %d %d (%d)",
+ pointer[1], pointer[2],
+ (int)((((unsigned int)pointer[1])<<8)|((unsigned int)pointer[2])));
+ nfrontp += strlen(nfrontp);
+ if (length == 4) {
+ sprintf(nfrontp, " ?%d?", pointer[3]);
+ nfrontp += strlen(nfrontp);
+ break;
+ }
+ sprintf(nfrontp, " %d %d (%d)",
+ pointer[3], pointer[4],
+ (int)((((unsigned int)pointer[3])<<8)|((unsigned int)pointer[4])));
+ nfrontp += strlen(nfrontp);
+ for (i = 5; i < length; i++) {
+ sprintf(nfrontp, " ?%d?", pointer[i]);
+ nfrontp += strlen(nfrontp);
+ }
+ break;
+
+ case TELOPT_LINEMODE:
+ sprintf(nfrontp, "LINEMODE ");
+ nfrontp += strlen(nfrontp);
+ if (length < 2) {
+ sprintf(nfrontp, " (empty suboption???)");
+ nfrontp += strlen(nfrontp);
+ break;
+ }
+ switch (pointer[1]) {
+ case WILL:
+ sprintf(nfrontp, "WILL ");
+ goto common;
+ case WONT:
+ sprintf(nfrontp, "WONT ");
+ goto common;
+ case DO:
+ sprintf(nfrontp, "DO ");
+ goto common;
+ case DONT:
+ sprintf(nfrontp, "DONT ");
+ common:
+ nfrontp += strlen(nfrontp);
+ if (length < 3) {
+ sprintf(nfrontp, "(no option???)");
+ nfrontp += strlen(nfrontp);
+ break;
+ }
+ switch (pointer[2]) {
+ case LM_FORWARDMASK:
+ sprintf(nfrontp, "Forward Mask");
+ nfrontp += strlen(nfrontp);
+ for (i = 3; i < length; i++) {
+ sprintf(nfrontp, " %x", pointer[i]);
+ nfrontp += strlen(nfrontp);
+ }
+ break;
+ default:
+ sprintf(nfrontp, "%d (unknown)", pointer[2]);
+ nfrontp += strlen(nfrontp);
+ for (i = 3; i < length; i++) {
+ sprintf(nfrontp, " %d", pointer[i]);
+ nfrontp += strlen(nfrontp);
+ }
+ break;
+ }
+ break;
+
+ case LM_SLC:
+ sprintf(nfrontp, "SLC");
+ nfrontp += strlen(nfrontp);
+ for (i = 2; i < length - 2; i += 3) {
+ if (SLC_NAME_OK(pointer[i+SLC_FUNC]))
+ sprintf(nfrontp, " %s", SLC_NAME(pointer[i+SLC_FUNC]));
+ else
+ sprintf(nfrontp, " %d", pointer[i+SLC_FUNC]);
+ nfrontp += strlen(nfrontp);
+ switch (pointer[i+SLC_FLAGS]&SLC_LEVELBITS) {
+ case SLC_NOSUPPORT:
+ sprintf(nfrontp, " NOSUPPORT"); break;
+ case SLC_CANTCHANGE:
+ sprintf(nfrontp, " CANTCHANGE"); break;
+ case SLC_VARIABLE:
+ sprintf(nfrontp, " VARIABLE"); break;
+ case SLC_DEFAULT:
+ sprintf(nfrontp, " DEFAULT"); break;
+ }
+ nfrontp += strlen(nfrontp);
+ sprintf(nfrontp, "%s%s%s",
+ pointer[i+SLC_FLAGS]&SLC_ACK ? "|ACK" : "",
+ pointer[i+SLC_FLAGS]&SLC_FLUSHIN ? "|FLUSHIN" : "",
+ pointer[i+SLC_FLAGS]&SLC_FLUSHOUT ? "|FLUSHOUT" : "");
+ nfrontp += strlen(nfrontp);
+ if (pointer[i+SLC_FLAGS]& ~(SLC_ACK|SLC_FLUSHIN|
+ SLC_FLUSHOUT| SLC_LEVELBITS)) {
+ sprintf(nfrontp, "(0x%x)", pointer[i+SLC_FLAGS]);
+ nfrontp += strlen(nfrontp);
+ }
+ sprintf(nfrontp, " %d;", pointer[i+SLC_VALUE]);
+ nfrontp += strlen(nfrontp);
+ if ((pointer[i+SLC_VALUE] == IAC) &&
+ (pointer[i+SLC_VALUE+1] == IAC))
+ i++;
+ }
+ for (; i < length; i++) {
+ sprintf(nfrontp, " ?%d?", pointer[i]);
+ nfrontp += strlen(nfrontp);
+ }
+ break;
+
+ case LM_MODE:
+ sprintf(nfrontp, "MODE ");
+ nfrontp += strlen(nfrontp);
+ if (length < 3) {
+ sprintf(nfrontp, "(no mode???)");
+ nfrontp += strlen(nfrontp);
+ break;
+ }
+ {
+ char tbuf[32];
+ sprintf(tbuf, "%s%s%s%s%s",
+ pointer[2]&MODE_EDIT ? "|EDIT" : "",
+ pointer[2]&MODE_TRAPSIG ? "|TRAPSIG" : "",
+ pointer[2]&MODE_SOFT_TAB ? "|SOFT_TAB" : "",
+ pointer[2]&MODE_LIT_ECHO ? "|LIT_ECHO" : "",
+ pointer[2]&MODE_ACK ? "|ACK" : "");
+ sprintf(nfrontp, "%s", tbuf[1] ? &tbuf[1] : "0");
+ nfrontp += strlen(nfrontp);
+ }
+ if (pointer[2]&~(MODE_EDIT|MODE_TRAPSIG|MODE_ACK)) {
+ sprintf(nfrontp, " (0x%x)", pointer[2]);
+ nfrontp += strlen(nfrontp);
+ }
+ for (i = 3; i < length; i++) {
+ sprintf(nfrontp, " ?0x%x?", pointer[i]);
+ nfrontp += strlen(nfrontp);
+ }
+ break;
+ default:
+ sprintf(nfrontp, "%d (unknown)", pointer[1]);
+ nfrontp += strlen(nfrontp);
+ for (i = 2; i < length; i++) {
+ sprintf(nfrontp, " %d", pointer[i]);
+ nfrontp += strlen(nfrontp);
+ }
+ }
+ break;
+
+ case TELOPT_STATUS: {
+ register char *cp;
+ register int j, k;
+
+ sprintf(nfrontp, "STATUS");
+ nfrontp += strlen(nfrontp);
+
+ switch (pointer[1]) {
+ default:
+ if (pointer[1] == TELQUAL_SEND)
+ sprintf(nfrontp, " SEND");
+ else
+ sprintf(nfrontp, " %d (unknown)", pointer[1]);
+ nfrontp += strlen(nfrontp);
+ for (i = 2; i < length; i++) {
+ sprintf(nfrontp, " ?%d?", pointer[i]);
+ nfrontp += strlen(nfrontp);
+ }
+ break;
+ case TELQUAL_IS:
+ sprintf(nfrontp, " IS\r\n");
+ nfrontp += strlen(nfrontp);
+
+ for (i = 2; i < length; i++) {
+ switch(pointer[i]) {
+ case DO: cp = "DO"; goto common2;
+ case DONT: cp = "DONT"; goto common2;
+ case WILL: cp = "WILL"; goto common2;
+ case WONT: cp = "WONT"; goto common2;
+ common2:
+ i++;
+ if (TELOPT_OK((int)pointer[i]))
+ sprintf(nfrontp, " %s %s", cp, TELOPT(pointer[i]));
+ else
+ sprintf(nfrontp, " %s %d", cp, pointer[i]);
+ nfrontp += strlen(nfrontp);
+
+ sprintf(nfrontp, "\r\n");
+ nfrontp += strlen(nfrontp);
+ break;
+
+ case SB:
+ sprintf(nfrontp, " SB ");
+ nfrontp += strlen(nfrontp);
+ i++;
+ j = k = i;
+ while (j < length) {
+ if (pointer[j] == SE) {
+ if (j+1 == length)
+ break;
+ if (pointer[j+1] == SE)
+ j++;
+ else
+ break;
+ }
+ pointer[k++] = pointer[j++];
+ }
+ printsub(0, &pointer[i], k - i);
+ if (i < length) {
+ sprintf(nfrontp, " SE");
+ nfrontp += strlen(nfrontp);
+ i = j;
+ } else
+ i = j - 1;
+
+ sprintf(nfrontp, "\r\n");
+ nfrontp += strlen(nfrontp);
+
+ break;
+
+ default:
+ sprintf(nfrontp, " %d", pointer[i]);
+ nfrontp += strlen(nfrontp);
+ break;
+ }
+ }
+ break;
+ }
+ break;
+ }
+
+ case TELOPT_XDISPLOC:
+ sprintf(nfrontp, "X-DISPLAY-LOCATION ");
+ nfrontp += strlen(nfrontp);
+ switch (pointer[1]) {
+ case TELQUAL_IS:
+ sprintf(nfrontp, "IS \"%.*s\"", length-2, (char *)pointer+2);
+ break;
+ case TELQUAL_SEND:
+ sprintf(nfrontp, "SEND");
+ break;
+ default:
+ sprintf(nfrontp, "- unknown qualifier %d (0x%x).",
+ pointer[1], pointer[1]);
+ }
+ nfrontp += strlen(nfrontp);
+ break;
+
+ case TELOPT_ENVIRON:
+ sprintf(nfrontp, "ENVIRON ");
+ nfrontp += strlen(nfrontp);
+ switch (pointer[1]) {
+ case TELQUAL_IS:
+ sprintf(nfrontp, "IS ");
+ goto env_common;
+ case TELQUAL_SEND:
+ sprintf(nfrontp, "SEND ");
+ goto env_common;
+ case TELQUAL_INFO:
+ sprintf(nfrontp, "INFO ");
+ env_common:
+ nfrontp += strlen(nfrontp);
+ {
+ register int noquote = 2;
+ for (i = 2; i < length; i++ ) {
+ switch (pointer[i]) {
+ case ENV_VAR:
+ if (pointer[1] == TELQUAL_SEND)
+ goto def_case;
+ sprintf(nfrontp, "\" VAR " + noquote);
+ nfrontp += strlen(nfrontp);
+ noquote = 2;
+ break;
+
+ case ENV_VALUE:
+ sprintf(nfrontp, "\" VALUE " + noquote);
+ nfrontp += strlen(nfrontp);
+ noquote = 2;
+ break;
+
+ case ENV_ESC:
+ sprintf(nfrontp, "\" ESC " + noquote);
+ nfrontp += strlen(nfrontp);
+ noquote = 2;
+ break;
+
+ case ENV_USERVAR:
+ if (pointer[1] == TELQUAL_SEND)
+ goto def_case;
+ sprintf(nfrontp, "\" USERVAR " + noquote);
+ nfrontp += strlen(nfrontp);
+ noquote = 2;
+ break;
+
+ default:
+ def_case:
+ if (isprint(pointer[i]) && pointer[i] != '"') {
+ if (noquote) {
+ *nfrontp++ = '"';
+ noquote = 0;
+ }
+ *nfrontp++ = pointer[i];
+ } else {
+ sprintf(nfrontp, "\" %03o " + noquote,
+ pointer[i]);
+ nfrontp += strlen(nfrontp);
+ noquote = 2;
+ }
+ break;
+ }
+ }
+ if (!noquote)
+ *nfrontp++ = '"';
+ break;
+ }
+ }
+ break;
+
+#if defined(AUTHENTICATION)
+ case TELOPT_AUTHENTICATION:
+ sprintf(nfrontp, "AUTHENTICATION");
+ nfrontp += strlen(nfrontp);
+
+ if (length < 2) {
+ sprintf(nfrontp, " (empty suboption???)");
+ nfrontp += strlen(nfrontp);
+ break;
+ }
+ switch (pointer[1]) {
+ case TELQUAL_REPLY:
+ case TELQUAL_IS:
+ sprintf(nfrontp, " %s ", (pointer[1] == TELQUAL_IS) ?
+ "IS" : "REPLY");
+ nfrontp += strlen(nfrontp);
+ if (AUTHTYPE_NAME_OK(pointer[2]))
+ sprintf(nfrontp, "%s ", AUTHTYPE_NAME(pointer[2]));
+ else
+ sprintf(nfrontp, "%d ", pointer[2]);
+ nfrontp += strlen(nfrontp);
+ if (length < 3) {
+ sprintf(nfrontp, "(partial suboption???)");
+ nfrontp += strlen(nfrontp);
+ break;
+ }
+ sprintf(nfrontp, "%s|%s",
+ ((pointer[3] & AUTH_WHO_MASK) == AUTH_WHO_CLIENT) ?
+ "CLIENT" : "SERVER",
+ ((pointer[3] & AUTH_HOW_MASK) == AUTH_HOW_MUTUAL) ?
+ "MUTUAL" : "ONE-WAY");
+ nfrontp += strlen(nfrontp);
+
+ auth_printsub(&pointer[1], length - 1, buf, sizeof(buf));
+ sprintf(nfrontp, "%s", buf);
+ nfrontp += strlen(nfrontp);
+ break;
+
+ case TELQUAL_SEND:
+ i = 2;
+ sprintf(nfrontp, " SEND ");
+ nfrontp += strlen(nfrontp);
+ while (i < length) {
+ if (AUTHTYPE_NAME_OK(pointer[i]))
+ sprintf(nfrontp, "%s ", AUTHTYPE_NAME(pointer[i]));
+ else
+ sprintf(nfrontp, "%d ", pointer[i]);
+ nfrontp += strlen(nfrontp);
+ if (++i >= length) {
+ sprintf(nfrontp, "(partial suboption???)");
+ nfrontp += strlen(nfrontp);
+ break;
+ }
+ sprintf(nfrontp, "%s|%s ",
+ ((pointer[i] & AUTH_WHO_MASK) == AUTH_WHO_CLIENT) ?
+ "CLIENT" : "SERVER",
+ ((pointer[i] & AUTH_HOW_MASK) == AUTH_HOW_MUTUAL) ?
+ "MUTUAL" : "ONE-WAY");
+ nfrontp += strlen(nfrontp);
+ ++i;
+ }
+ break;
+
+ case TELQUAL_NAME:
+ i = 2;
+ sprintf(nfrontp, " NAME \"");
+ nfrontp += strlen(nfrontp);
+ while (i < length)
+ *nfrontp += pointer[i++];
+ *nfrontp += '"';
+ break;
+
+ default:
+ for (i = 2; i < length; i++) {
+ sprintf(nfrontp, " ?%d?", pointer[i]);
+ nfrontp += strlen(nfrontp);
+ }
+ break;
+ }
+ break;
+#endif
+
+#if defined(ENCRYPTION)
+ case TELOPT_ENCRYPT:
+ sprintf(nfrontp, "ENCRYPT");
+ nfrontp += strlen(nfrontp);
+ if (length < 2) {
+ sprintf(nfrontp, " (empty suboption???)");
+ nfrontp += strlen(nfrontp);
+ break;
+ }
+ switch (pointer[1]) {
+ case ENCRYPT_START:
+ sprintf(nfrontp, " START");
+ nfrontp += strlen(nfrontp);
+ break;
+
+ case ENCRYPT_END:
+ sprintf(nfrontp, " END");
+ nfrontp += strlen(nfrontp);
+ break;
+
+ case ENCRYPT_REQSTART:
+ sprintf(nfrontp, " REQUEST-START");
+ nfrontp += strlen(nfrontp);
+ break;
+
+ case ENCRYPT_REQEND:
+ sprintf(nfrontp, " REQUEST-END");
+ nfrontp += strlen(nfrontp);
+ break;
+
+ case ENCRYPT_IS:
+ case ENCRYPT_REPLY:
+ sprintf(nfrontp, " %s ", (pointer[1] == ENCRYPT_IS) ?
+ "IS" : "REPLY");
+ nfrontp += strlen(nfrontp);
+ if (length < 3) {
+ sprintf(nfrontp, " (partial suboption???)");
+ nfrontp += strlen(nfrontp);
+ break;
+ }
+ if (ENCTYPE_NAME_OK(pointer[2]))
+ sprintf(nfrontp, "%s ", ENCTYPE_NAME(pointer[2]));
+ else
+ sprintf(nfrontp, " %d (unknown)", pointer[2]);
+ nfrontp += strlen(nfrontp);
+
+ encrypt_printsub(&pointer[1], length - 1, buf, sizeof(buf));
+ sprintf(nfrontp, "%s", buf);
+ nfrontp += strlen(nfrontp);
+ break;
+
+ case ENCRYPT_SUPPORT:
+ i = 2;
+ sprintf(nfrontp, " SUPPORT ");
+ nfrontp += strlen(nfrontp);
+ while (i < length) {
+ if (ENCTYPE_NAME_OK(pointer[i]))
+ sprintf(nfrontp, "%s ", ENCTYPE_NAME(pointer[i]));
+ else
+ sprintf(nfrontp, "%d ", pointer[i]);
+ nfrontp += strlen(nfrontp);
+ i++;
+ }
+ break;
+
+ case ENCRYPT_ENC_KEYID:
+ sprintf(nfrontp, " ENC_KEYID", pointer[1]);
+ nfrontp += strlen(nfrontp);
+ goto encommon;
+
+ case ENCRYPT_DEC_KEYID:
+ sprintf(nfrontp, " DEC_KEYID", pointer[1]);
+ nfrontp += strlen(nfrontp);
+ goto encommon;
+
+ default:
+ sprintf(nfrontp, " %d (unknown)", pointer[1]);
+ nfrontp += strlen(nfrontp);
+ encommon:
+ for (i = 2; i < length; i++) {
+ sprintf(nfrontp, " %d", pointer[i]);
+ nfrontp += strlen(nfrontp);
+ }
+ break;
+ }
+ break;
+#endif
+
+ default:
+ if (TELOPT_OK(pointer[0]))
+ sprintf(nfrontp, "%s (unknown)", TELOPT(pointer[0]));
+ else
+ sprintf(nfrontp, "%d (unknown)", pointer[i]);
+ nfrontp += strlen(nfrontp);
+ for (i = 1; i < length; i++) {
+ sprintf(nfrontp, " %d", pointer[i]);
+ nfrontp += strlen(nfrontp);
+ }
+ break;
+ }
+ sprintf(nfrontp, "\r\n");
+ nfrontp += strlen(nfrontp);
+}
+
+/*
+ * Dump a data buffer in hex and ascii to the output data stream.
+ */
+ void
+printdata(tag, ptr, cnt)
+ register char *tag;
+ register char *ptr;
+ register int cnt;
+{
+ register int i;
+ char xbuf[30];
+
+ while (cnt) {
+ /* flush net output buffer if no room for new data) */
+ if ((&netobuf[BUFSIZ] - nfrontp) < 80) {
+ netflush();
+ }
+
+ /* add a line of output */
+ sprintf(nfrontp, "%s: ", tag);
+ nfrontp += strlen(nfrontp);
+ for (i = 0; i < 20 && cnt; i++) {
+ sprintf(nfrontp, "%02x", *ptr);
+ nfrontp += strlen(nfrontp);
+ if (isprint(*ptr)) {
+ xbuf[i] = *ptr;
+ } else {
+ xbuf[i] = '.';
+ }
+ if (i % 2) {
+ *nfrontp = ' ';
+ nfrontp++;
+ }
+ cnt--;
+ ptr++;
+ }
+ xbuf[i] = '\0';
+ sprintf(nfrontp, " %s\r\n", xbuf );
+ nfrontp += strlen(nfrontp);
+ }
+}
+#endif /* DIAGNOSTICS */
projects / krb5.git / commitdiff