From: John Kohl Date: Wed, 2 May 1990 17:38:19 +0000 (+0000) Subject: Initial revision X-Git-Tag: krb5-1.0-alpha2~720 X-Git-Url: http://git.tremily.us/?a=commitdiff_plain;h=c591dc86e4d2da0d70566dd7dcb636e49811eb36;p=krb5.git Initial revision git-svn-id: svn://anonsvn.mit.edu/krb5/trunk@676 dc483132-0cff-0310-8789-dd5450dbe970 --- diff --git a/src/lib/krb5/posix/syslog.c b/src/lib/krb5/posix/syslog.c new file mode 100644 index 000000000..d7b9dc904 --- /dev/null +++ b/src/lib/krb5/posix/syslog.c @@ -0,0 +1,225 @@ +/* + * 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. + */ + +#if defined(LIBC_SCCS) && !defined(lint) +static char sccsid[] = "@(#)syslog.c 5.20 (Berkeley) 1/19/89"; +#endif /* LIBC_SCCS and not lint */ + +/* + * 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 + */ + +#ifdef __STDC__ +#include +#else +#define const +#include +#endif +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#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 +#ifdef __STDC__ +syslog(int pri, const char *fmt, ...) +#else +syslog(pri, fmt, args) + int pri; + char *fmt; + va_dcl +#endif +{ + va_list pvar; +#ifdef __STDC__ + 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; +{ + extern int errno; + register int cnt; + register char *p; + time_t now, time(); + int pid, saved_errno; + char tbuf[2048], fmt_cpy[1024], *ctime(); + + 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)strcpy(p, LogTag); + 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; + char *strerror(); + + 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); + + /* 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 */ + pid = vfork(); + 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); + (void)strcat(tbuf, "\r"); + p = index(tbuf, '>') + 1; + (void)write(fd, p, cnt + 1 - (p - tbuf)); + (void)close(fd); + _exit(0); + } + if (!(LogStat & LOG_NOWAIT)) + while ((cnt = wait((int *)0)) > 0 && cnt != pid); +} + +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); +}