-/*
- * Copyright (c) 1983, 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.
- */
-
-/* based on @(#)syslog.c 5.20 (Berkeley) 1/19/89 */
-
-/*
- * SYSLOG -- print message on log file
- *
- * This routine looks a lot like printf, except that it outputs to the
- * log file instead of the standard output. Also:
- * adds a timestamp,
- * prints the module name in front of the message,
- * has some other formatting types (or will sometime),
- * adds a newline on the end of the message.
- *
- * The output of this routine is intended to be read by syslogd(8).
- *
- * Author: Eric Allman
- * Modified to use UNIX domain IPC by Ralph Campbell
- */
-
-#if !defined(_WIN32)
-
-#if defined(__STDC__) || defined(_WIN32)
-#include <stdarg.h>
-#else
-#define const
-#include <varargs.h>
-#endif
-#include <errno.h>
-#include <sys/types.h>
-#include <sys/socket.h>
-#include <sys/file.h>
-#include <fcntl.h>
-#include <sys/signal.h>
-#include <syslog.h>
-#include <sys/wait.h>
-#include <netdb.h>
-#include <string.h>
-#include <stdio.h>
-
-#define LOGNAME "/dev/log"
-#define CONSOLE "/dev/console"
-
-static int LogFile = -1; /* fd for log */
-static int connected; /* have done connect */
-static int LogStat = 0; /* status bits, set by openlog() */
-static const char *LogTag = "syslog"; /* string to tag the entry with */
-static int LogFacility = LOG_USER; /* default facility code */
-
-
-void
-#if defined(__STDC__) || defined(_WIN32)
-syslog(int pri, const char *fmt, ...)
-#else
-syslog(pri, fmt, va_alist)
- int pri;
- char *fmt;
- va_dcl
-#endif
-{
- va_list pvar;
- void vsyslog();
-#if defined(__STDC__) || defined(_WIN32)
- va_start(pvar, fmt);
-#else
- va_start(pvar);
-#endif
- vsyslog(pri, fmt, pvar);
- va_end(pvar);
-}
-
-void
-vsyslog(pri, fmt, ap)
- int pri;
- const register char *fmt;
- va_list ap;
-{
- register int cnt;
- register char *p;
- time_t now, time();
- int pid, saved_errno;
- char tbuf[2048], fmt_cpy[1024], *ctime();
- void openlog();
-
- saved_errno = errno;
-
- /* see if we should just throw out this message */
- if ((u_int)LOG_FAC(pri) >= LOG_NFACILITIES ||
- !LOG_MASK(LOG_PRI(pri)) || (pri &~ (LOG_PRIMASK|LOG_FACMASK)))
- return;
- if (LogFile < 0 || !connected)
- openlog(LogTag, LogStat | LOG_NDELAY, 0);
-
- /* set default facility if none specified */
- if ((pri & LOG_FACMASK) == 0)
- pri |= LogFacility;
-
- /* build the message */
- (void)time(&now);
- (void)sprintf(tbuf, "<%d>%.15s ", pri, ctime(&now) + 4);
- for (p = tbuf; *p; ++p);
- if (LogTag) {
- (void)strncpy(p, LogTag, sizeof(tbuf) - 1 - (p - tbuf));
- for (; *p; ++p);
- }
- if (LogStat & LOG_PID) {
- (void)sprintf(p, "[%d]", getpid());
- for (; *p; ++p);
- }
- if (LogTag) {
- *p++ = ':';
- *p++ = ' ';
- }
-
- /* substitute error message for %m */
- {
- register char ch, *t1, *t2;
-#ifndef strerror
- extern char *strerror();
-#endif
-
- for (t1 = fmt_cpy; ch = *fmt; ++fmt)
- if (ch == '%' && fmt[1] == 'm') {
- ++fmt;
- for (t2 = strerror(saved_errno);
- *t1 = *t2++; ++t1);
- }
- else
- *t1++ = ch;
- *t1 = '\0';
- }
-
- (void)vsprintf(p, fmt_cpy, ap);
- /* Bounds checking?? If a system doesn't have syslog, we
- probably can't rely on it having vsnprintf either. Try not
- to let a buffer overrun be exploited. */
- if (strlen (tbuf) >= sizeof (tbuf))
- abort ();
-
- /* output the message to the local logger */
- if (send(LogFile, tbuf, cnt = strlen(tbuf), 0) >= 0 ||
- !(LogStat&LOG_CONS))
- return;
-
- /* output the message to the console */
-#if defined(SYSV) || defined(_AIX)
- pid = fork();
-#else
- pid = vfork();
-#endif
- if (pid == -1)
- return;
- if (pid == 0) {
- int fd;
-
- (void)signal(SIGALRM, SIG_DFL);
- sigsetmask((long)~sigmask(SIGALRM));
- (void)alarm((u_int)5);
- if ((fd = open(CONSOLE, O_WRONLY, 0)) < 0)
- return;
- (void)alarm((u_int)0);
- tbuf[sizeof(tbuf) - 1] = '\0';
- (void)strncat(tbuf, "\r", sizeof(tbuf) - 1 - strlen(tbuf));
- p = strchr(tbuf, '>') + 1;
- (void)write(fd, p, cnt + 1 - (p - tbuf));
- (void)close(fd);
- _exit(0);
- }
-#if defined(SYSV) || defined(_AIX) || defined(_POSIX_SOURCE)
-#define cast int *
-#else
-#define cast union wait *
-#endif
- if (!(LogStat & LOG_NOWAIT))
- while ((cnt = wait((cast)0)) > 0 && cnt != pid);
-#undef cast
-}
-
-static struct sockaddr SyslogAddr; /* AF_UNIX address of local logger */
-/*
- * OPENLOG -- open system log
- */
-void
-openlog(ident, logstat, logfac)
- const char *ident;
- int logstat, logfac;
-{
- if (ident != NULL)
- LogTag = ident;
- LogStat = logstat;
- if (logfac != 0 && (logfac &~ LOG_FACMASK) == 0)
- LogFacility = logfac;
- if (LogFile == -1) {
- SyslogAddr.sa_family = AF_UNIX;
- strncpy(SyslogAddr.sa_data, LOGNAME, sizeof SyslogAddr.sa_data);
- if (LogStat & LOG_NDELAY) {
- LogFile = socket(AF_UNIX, SOCK_DGRAM, 0);
- fcntl(LogFile, F_SETFD, 1);
- }
- }
- if (LogFile != -1 && !connected &&
- connect(LogFile, &SyslogAddr, sizeof(SyslogAddr)) != -1)
- connected = 1;
-}
-
-/*
- * CLOSELOG -- close the system log
- */
-void
-closelog()
-{
- (void) close(LogFile);
- LogFile = -1;
- connected = 0;
-}
-
-static int LogMask = 0xff; /* mask of priorities to be logged */
-/*
- * SETLOGMASK -- set the log mask level
- */
-int
-setlogmask(pmask)
- int pmask;
-{
- int omask;
-
- omask = LogMask;
- if (pmask != 0)
- LogMask = pmask;
- return (omask);
-}
-#else /* Windows or Mac */
-
+#if defined(_WIN32)
/* Windows doesn't have the concept of a system log, so just
** do nothing here.
*/
projects / krb5.git / commitdiff