From 8f635506d3f0a7c8ebb85886fea8acb5ec08794a Mon Sep 17 00:00:00 2001
From: Tom Yu <tlyu@mit.edu>
Date: Sat, 11 Apr 1998 02:52:39 +0000
Subject: [PATCH] 	* ftpd.c (receive_data): 	(send_data): Add
 support for sigsetjmp(). 	(main): Use sigaction() if we can to avoid
 SysV lossage.

	* ftpcmd.y (PBSZ): Remove restriction on shrinking buffer size.

git-svn-id: svn://anonsvn.mit.edu/krb5/trunk@10526 dc483132-0cff-0310-8789-dd5450dbe970
---
 src/appl/gssftp/ftpd/ChangeLog |  8 ++++++++
 src/appl/gssftp/ftpd/ftpcmd.y  |  2 --
 src/appl/gssftp/ftpd/ftpd.c    | 31 ++++++++++++++++++++++++++-----
 3 files changed, 34 insertions(+), 7 deletions(-)

diff --git a/src/appl/gssftp/ftpd/ChangeLog b/src/appl/gssftp/ftpd/ChangeLog
index 7fcab65dd..fd13cf535 100644
--- a/src/appl/gssftp/ftpd/ChangeLog
+++ b/src/appl/gssftp/ftpd/ChangeLog
@@ -1,3 +1,11 @@
+Fri Apr 10 20:06:31 1998  Tom Yu  <tlyu@mit.edu>
+
+	* ftpd.c (receive_data):
+	(send_data): Add support for sigsetjmp().
+	(main): Use sigaction() if we can to avoid SysV lossage.
+
+	* ftpcmd.y (PBSZ): Remove restriction on shrinking buffer size.
+
 Thu Mar  5 13:59:47 1998  Dan Winship  <danw@mit.edu>
 
 	* ftpcmd.y (getline): Don't syslog passwords! (or newlines)
diff --git a/src/appl/gssftp/ftpd/ftpcmd.y b/src/appl/gssftp/ftpd/ftpcmd.y
index a7c400ba3..aa0aa1b31 100644
--- a/src/appl/gssftp/ftpd/ftpcmd.y
+++ b/src/appl/gssftp/ftpd/ftpcmd.y
@@ -243,8 +243,6 @@ cmd:		USER SP username CRLF
 			else if (strlen($3) > 10 ||
 				 strlen($3) == 10 && strcmp($3,"4294967296") >= 0)
 			    reply(501, "Bad value for PBSZ: %s", $3);
-			else if (actualbuf >= (maxbuf =(unsigned int) atol($3)))
-			    reply(200, "PBSZ=%u", actualbuf);
 			else {
 			    if (ucbuf) (void) free(ucbuf);
 			    actualbuf = (unsigned int) atol($3);
diff --git a/src/appl/gssftp/ftpd/ftpd.c b/src/appl/gssftp/ftpd/ftpd.c
index 6edeb1e17..45e561f95 100644
--- a/src/appl/gssftp/ftpd/ftpd.c
+++ b/src/appl/gssftp/ftpd/ftpd.c
@@ -72,6 +72,14 @@ static char sccsid[] = "@(#)ftpd.c	5.40 (Berkeley) 7/2/91";
 #include <shadow.h>
 #endif
 #include <setjmp.h>
+#ifndef POSIX_SETJMP
+#undef sigjmp_buf
+#undef sigsetjmp
+#undef siglongjmp
+#define sigjmp_buf	jmp_buf
+#define sigsetjmp(j,s)	setjmp(j)
+#define siglongjmp	longjmp
+#endif
 #ifndef KRB5_KRB4_COMPAT
 /* krb.h gets this, and Ultrix doesn't protect vs multiple inclusion */
 #include <netdb.h>
@@ -159,7 +167,8 @@ struct	sockaddr_in his_addr;
 struct	sockaddr_in pasv_addr;
 
 int	data;
-jmp_buf	errcatch, urgcatch;
+jmp_buf	errcatch;
+sigjmp_buf urgcatch;
 int	logged_in;
 struct	passwd *pw;
 int	debug;
@@ -414,9 +423,21 @@ nextopt:
 	(void) signal(SIGPIPE, lostconn);
 	(void) signal(SIGCHLD, SIG_IGN);
 #ifdef SIGURG
+#ifdef POSIX_SIGNALS
+	{
+		struct sigaction sa;
+
+		sigemptyset(&sa.sa_mask);
+		sa.sa_flags = 0;
+		sa.sa_handler = myoob;
+		if (sigaction(SIGURG, &sa, NULL) < 0)
+			syslog(LOG_ERR, "signal: %m");
+	}
+#else
 	if ((long)signal(SIGURG, myoob) < 0)
 		syslog(LOG_ERR, "signal: %m");
-#endif
+#endif /* POSIX_SIGNALS */
+#endif /* SIGURG */
 
 	/* Try to handle urgent data inline */
 #ifdef SO_OOBINLINE
@@ -1159,7 +1180,7 @@ void send_data(instr, outstr, blksize)
 	int ret = 0;
 
 	transflag++;
-	if (setjmp(urgcatch)) {
+	if (sigsetjmp(urgcatch, 1)) {
 		transflag = 0;
 		return;
 	}
@@ -1241,7 +1262,7 @@ receive_data(instr, outstr)
 	int ret = 0;
 
 	transflag++;
-	if (setjmp(urgcatch)) {
+	if (sigsetjmp(urgcatch, 1)) {
 		transflag = 0;
 		return (-1);
 	}
@@ -1718,7 +1739,7 @@ myoob()
 		tmpline[0] = '\0';
 		reply(426, "Transfer aborted. Data connection closed.");
 		reply(226, "Abort successful");
-		longjmp(urgcatch, 1);
+		siglongjmp(urgcatch, 1);
 	}
 	if (strcmp(cp, "STAT") == 0) {
 		if (file_size != (off_t) -1)
-- 
2.26.2