[openssh.git] / log.c

/* $OpenBSD: log.c,v 1.39 2006/08/18 09:13:25 deraadt Exp $ */
/*
 * Author: Tatu Ylonen <ylo@cs.hut.fi>
 * Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
 *                    All rights reserved
 *
 * As far as I am concerned, the code I have written for this software
 * can be used freely for any purpose.  Any derived versions of this
 * software must be clearly marked as such, and if the derived work is
 * incompatible with the protocol description in the RFC file, it must be
 * called by a name other than "ssh" or "Secure Shell".
 */
/*
 * Copyright (c) 2000 Markus Friedl.  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.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
 */

#include "includes.h"

#include <sys/types.h>

#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <syslog.h>
#include <unistd.h>
#if defined(HAVE_STRNVIS) && defined(HAVE_VIS_H)
# include <vis.h>
#endif

#include "xmalloc.h"
#include "log.h"

static LogLevel log_level = SYSLOG_LEVEL_INFO;
static int log_on_stderr = 1;
static int log_facility = LOG_AUTH;
static char *argv0;

extern char *__progname;

#define LOG_SYSLOG_VIS	(VIS_CSTYLE|VIS_NL|VIS_TAB|VIS_OCTAL)
#define LOG_STDERR_VIS	(VIS_SAFE|VIS_OCTAL)

/* textual representation of log-facilities/levels */

static struct {
	const char *name;
	SyslogFacility val;
} log_facilities[] = {
	{ "DAEMON",	SYSLOG_FACILITY_DAEMON },
	{ "USER",	SYSLOG_FACILITY_USER },
	{ "AUTH",	SYSLOG_FACILITY_AUTH },
#ifdef LOG_AUTHPRIV
	{ "AUTHPRIV",	SYSLOG_FACILITY_AUTHPRIV },
#endif
	{ "LOCAL0",	SYSLOG_FACILITY_LOCAL0 },
	{ "LOCAL1",	SYSLOG_FACILITY_LOCAL1 },
	{ "LOCAL2",	SYSLOG_FACILITY_LOCAL2 },
	{ "LOCAL3",	SYSLOG_FACILITY_LOCAL3 },
	{ "LOCAL4",	SYSLOG_FACILITY_LOCAL4 },
	{ "LOCAL5",	SYSLOG_FACILITY_LOCAL5 },
	{ "LOCAL6",	SYSLOG_FACILITY_LOCAL6 },
	{ "LOCAL7",	SYSLOG_FACILITY_LOCAL7 },
	{ NULL,		SYSLOG_FACILITY_NOT_SET }
};

static struct {
	const char *name;
	LogLevel val;
} log_levels[] =
{
	{ "QUIET",	SYSLOG_LEVEL_QUIET },
	{ "FATAL",	SYSLOG_LEVEL_FATAL },
	{ "ERROR",	SYSLOG_LEVEL_ERROR },
	{ "INFO",	SYSLOG_LEVEL_INFO },
	{ "VERBOSE",	SYSLOG_LEVEL_VERBOSE },
	{ "DEBUG",	SYSLOG_LEVEL_DEBUG1 },
	{ "DEBUG1",	SYSLOG_LEVEL_DEBUG1 },
	{ "DEBUG2",	SYSLOG_LEVEL_DEBUG2 },
	{ "DEBUG3",	SYSLOG_LEVEL_DEBUG3 },
	{ NULL,		SYSLOG_LEVEL_NOT_SET }
};

SyslogFacility
log_facility_number(char *name)
{
	int i;

	if (name != NULL)
		for (i = 0; log_facilities[i].name; i++)
			if (strcasecmp(log_facilities[i].name, name) == 0)
				return log_facilities[i].val;
	return SYSLOG_FACILITY_NOT_SET;
}

LogLevel
log_level_number(char *name)
{
	int i;

	if (name != NULL)
		for (i = 0; log_levels[i].name; i++)
			if (strcasecmp(log_levels[i].name, name) == 0)
				return log_levels[i].val;
	return SYSLOG_LEVEL_NOT_SET;
}

/* Error messages that should be logged. */

void
error(const char *fmt,...)
{
	va_list args;

	va_start(args, fmt);
	do_log(SYSLOG_LEVEL_ERROR, fmt, args);
	va_end(args);
}

void
sigdie(const char *fmt,...)
{
	va_list args;

	va_start(args, fmt);
	do_log(SYSLOG_LEVEL_FATAL, fmt, args);
	va_end(args);
	_exit(1);
}


/* Log this message (information that usually should go to the log). */

void
logit(const char *fmt,...)
{
	va_list args;

	va_start(args, fmt);
	do_log(SYSLOG_LEVEL_INFO, fmt, args);
	va_end(args);
}

/* More detailed messages (information that does not need to go to the log). */

void
verbose(const char *fmt,...)
{
	va_list args;

	va_start(args, fmt);
	do_log(SYSLOG_LEVEL_VERBOSE, fmt, args);
	va_end(args);
}

/* Debugging messages that should not be logged during normal operation. */

void
debug(const char *fmt,...)
{
	va_list args;

	va_start(args, fmt);
	do_log(SYSLOG_LEVEL_DEBUG1, fmt, args);
	va_end(args);
}

void
debug2(const char *fmt,...)
{
	va_list args;

	va_start(args, fmt);
	do_log(SYSLOG_LEVEL_DEBUG2, fmt, args);
	va_end(args);
}

void
debug3(const char *fmt,...)
{
	va_list args;

	va_start(args, fmt);
	do_log(SYSLOG_LEVEL_DEBUG3, fmt, args);
	va_end(args);
}

/*
 * Initialize the log.
 */

void
log_init(char *av0, LogLevel level, SyslogFacility facility, int on_stderr)
{
#if defined(HAVE_OPENLOG_R) && defined(SYSLOG_DATA_INIT)
	struct syslog_data sdata = SYSLOG_DATA_INIT;
#endif

	argv0 = av0;

	switch (level) {
	case SYSLOG_LEVEL_QUIET:
	case SYSLOG_LEVEL_FATAL:
	case SYSLOG_LEVEL_ERROR:
	case SYSLOG_LEVEL_INFO:
	case SYSLOG_LEVEL_VERBOSE:
	case SYSLOG_LEVEL_DEBUG1:
	case SYSLOG_LEVEL_DEBUG2:
	case SYSLOG_LEVEL_DEBUG3:
		log_level = level;
		break;
	default:
		fprintf(stderr, "Unrecognized internal syslog level code %d\n",
		    (int) level);
		exit(1);
	}

	log_on_stderr = on_stderr;
	if (on_stderr)
		return;

	switch (facility) {
	case SYSLOG_FACILITY_DAEMON:
		log_facility = LOG_DAEMON;
		break;
	case SYSLOG_FACILITY_USER:
		log_facility = LOG_USER;
		break;
	case SYSLOG_FACILITY_AUTH:
		log_facility = LOG_AUTH;
		break;
#ifdef LOG_AUTHPRIV
	case SYSLOG_FACILITY_AUTHPRIV:
		log_facility = LOG_AUTHPRIV;
		break;
#endif
	case SYSLOG_FACILITY_LOCAL0:
		log_facility = LOG_LOCAL0;
		break;
	case SYSLOG_FACILITY_LOCAL1:
		log_facility = LOG_LOCAL1;
		break;
	case SYSLOG_FACILITY_LOCAL2:
		log_facility = LOG_LOCAL2;
		break;
	case SYSLOG_FACILITY_LOCAL3:
		log_facility = LOG_LOCAL3;
		break;
	case SYSLOG_FACILITY_LOCAL4:
		log_facility = LOG_LOCAL4;
		break;
	case SYSLOG_FACILITY_LOCAL5:
		log_facility = LOG_LOCAL5;
		break;
	case SYSLOG_FACILITY_LOCAL6:
		log_facility = LOG_LOCAL6;
		break;
	case SYSLOG_FACILITY_LOCAL7:
		log_facility = LOG_LOCAL7;
		break;
	default:
		fprintf(stderr,
		    "Unrecognized internal syslog facility code %d\n",
		    (int) facility);
		exit(1);
	}

	/*
	 * If an external library (eg libwrap) attempts to use syslog
	 * immediately after reexec, syslog may be pointing to the wrong
	 * facility, so we force an open/close of syslog here.
	 */
#if defined(HAVE_OPENLOG_R) && defined(SYSLOG_DATA_INIT)
	openlog_r(argv0 ? argv0 : __progname, LOG_PID, log_facility, &sdata);
	closelog_r(&sdata);
#else
	openlog(argv0 ? argv0 : __progname, LOG_PID, log_facility);
	closelog();
#endif
}

#define MSGBUFSIZ 1024

void
do_log(LogLevel level, const char *fmt, va_list args)
{
#if defined(HAVE_OPENLOG_R) && defined(SYSLOG_DATA_INIT)
	struct syslog_data sdata = SYSLOG_DATA_INIT;
#endif
	char msgbuf[MSGBUFSIZ];
	char fmtbuf[MSGBUFSIZ];
	char *txt = NULL;
	int pri = LOG_INFO;

	if (level > log_level)
		return;

	switch (level) {
	case SYSLOG_LEVEL_FATAL:
		if (!log_on_stderr)
			txt = "fatal";
		pri = LOG_CRIT;
		break;
	case SYSLOG_LEVEL_ERROR:
		if (!log_on_stderr)
			txt = "error";
		pri = LOG_ERR;
		break;
	case SYSLOG_LEVEL_INFO:
		pri = LOG_INFO;
		break;
	case SYSLOG_LEVEL_VERBOSE:
		pri = LOG_INFO;
		break;
	case SYSLOG_LEVEL_DEBUG1:
		txt = "debug1";
		pri = LOG_DEBUG;
		break;
	case SYSLOG_LEVEL_DEBUG2:
		txt = "debug2";
		pri = LOG_DEBUG;
		break;
	case SYSLOG_LEVEL_DEBUG3:
		txt = "debug3";
		pri = LOG_DEBUG;
		break;
	default:
		txt = "internal error";
		pri = LOG_ERR;
		break;
	}
	if (txt != NULL) {
		snprintf(fmtbuf, sizeof(fmtbuf), "%s: %s", txt, fmt);
		vsnprintf(msgbuf, sizeof(msgbuf), fmtbuf, args);
	} else {
		vsnprintf(msgbuf, sizeof(msgbuf), fmt, args);
	}
	strnvis(fmtbuf, msgbuf, sizeof(fmtbuf),
	    log_on_stderr ? LOG_STDERR_VIS : LOG_SYSLOG_VIS);
	if (log_on_stderr) {
		snprintf(msgbuf, sizeof msgbuf, "%s\r\n", fmtbuf);
		write(STDERR_FILENO, msgbuf, strlen(msgbuf));
	} else {
#if defined(HAVE_OPENLOG_R) && defined(SYSLOG_DATA_INIT)
		openlog_r(argv0 ? argv0 : __progname, LOG_PID, log_facility, &sdata);
		syslog_r(pri, &sdata, "%.500s", fmtbuf);
		closelog_r(&sdata);
#else
		openlog(argv0 ? argv0 : __progname, LOG_PID, log_facility);
		syslog(pri, "%.500s", fmtbuf);
		closelog();
#endif
	}
}
Commit	Line	Data
28463427	1	/* $OpenBSD: log.c,v 1.39 2006/08/18 09:13:25 deraadt Exp $ */
bcbf86ec	2	/*
	3	* Author: Tatu Ylonen <ylo@cs.hut.fi>
	4	* Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
	5	* All rights reserved
	6	*
	7	* As far as I am concerned, the code I have written for this software
	8	* can be used freely for any purpose. Any derived versions of this
	9	* software must be clearly marked as such, and if the derived work is
	10	* incompatible with the protocol description in the RFC file, it must be
	11	* called by a name other than "ssh" or "Secure Shell".
	12	*/
6a17f9c2	13	/*
bcbf86ec	14	* Copyright (c) 2000 Markus Friedl. All rights reserved.
	15	*
	16	* Redistribution and use in source and binary forms, with or without
	17	* modification, are permitted provided that the following conditions
	18	* are met:
	19	* 1. Redistributions of source code must retain the above copyright
	20	* notice, this list of conditions and the following disclaimer.
	21	* 2. Redistributions in binary form must reproduce the above copyright
	22	* notice, this list of conditions and the following disclaimer in the
	23	* documentation and/or other materials provided with the distribution.
	24	*
	25	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
	26	* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
	27	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
	28	* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
	29	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
	30	* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
	31	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
	32	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
	33	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
	34	* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
aa3378df	35	*/
6a17f9c2	36
6a17f9c2	37	#include "includes.h"
6a17f9c2	38
31652869	39	#include <sys/types.h>
31652869	40
4c72fcfd	41	#include <stdarg.h>
cf851879	42	#include <stdio.h>
ffa517a8	43	#include <stdlib.h>
00146caa	44	#include <string.h>
20244695	45	#include <syslog.h>
5188ba17	46	#include <unistd.h>
0a23d79f	47	#if defined(HAVE_STRNVIS) && defined(HAVE_VIS_H)
	48	# include <vis.h>
	49	#endif
20244695	50
ca1df159	51	#include "xmalloc.h"
31652869	52	#include "log.h"
ca1df159	53
20244695	54	static LogLevel log_level = SYSLOG_LEVEL_INFO;
	55	static int log_on_stderr = 1;
	56	static int log_facility = LOG_AUTH;
	57	static char *argv0;
	58
	59	extern char *__progname;
	60
ac87b3c2	61	#define LOG_SYSLOG_VIS (VIS_CSTYLE\|VIS_NL\|VIS_TAB\|VIS_OCTAL)
	62	#define LOG_STDERR_VIS (VIS_SAFE\|VIS_OCTAL)
	63
20244695	64	/* textual representation of log-facilities/levels */
	65
	66	static struct {
	67	const char *name;
	68	SyslogFacility val;
	69	} log_facilities[] = {
	70	{ "DAEMON", SYSLOG_FACILITY_DAEMON },
	71	{ "USER", SYSLOG_FACILITY_USER },
	72	{ "AUTH", SYSLOG_FACILITY_AUTH },
cc3067d6	73	#ifdef LOG_AUTHPRIV
	74	{ "AUTHPRIV", SYSLOG_FACILITY_AUTHPRIV },
	75	#endif
20244695	76	{ "LOCAL0", SYSLOG_FACILITY_LOCAL0 },
	77	{ "LOCAL1", SYSLOG_FACILITY_LOCAL1 },
	78	{ "LOCAL2", SYSLOG_FACILITY_LOCAL2 },
	79	{ "LOCAL3", SYSLOG_FACILITY_LOCAL3 },
	80	{ "LOCAL4", SYSLOG_FACILITY_LOCAL4 },
	81	{ "LOCAL5", SYSLOG_FACILITY_LOCAL5 },
	82	{ "LOCAL6", SYSLOG_FACILITY_LOCAL6 },
	83	{ "LOCAL7", SYSLOG_FACILITY_LOCAL7 },
5eaf8578	84	{ NULL, SYSLOG_FACILITY_NOT_SET }
20244695	85	};
	86
	87	static struct {
	88	const char *name;
	89	LogLevel val;
	90	} log_levels[] =
	91	{
	92	{ "QUIET", SYSLOG_LEVEL_QUIET },
	93	{ "FATAL", SYSLOG_LEVEL_FATAL },
	94	{ "ERROR", SYSLOG_LEVEL_ERROR },
	95	{ "INFO", SYSLOG_LEVEL_INFO },
	96	{ "VERBOSE", SYSLOG_LEVEL_VERBOSE },
	97	{ "DEBUG", SYSLOG_LEVEL_DEBUG1 },
	98	{ "DEBUG1", SYSLOG_LEVEL_DEBUG1 },
	99	{ "DEBUG2", SYSLOG_LEVEL_DEBUG2 },
	100	{ "DEBUG3", SYSLOG_LEVEL_DEBUG3 },
5eaf8578	101	{ NULL, SYSLOG_LEVEL_NOT_SET }
20244695	102	};
	103
	104	SyslogFacility
	105	log_facility_number(char *name)
	106	{
	107	int i;
4394a17f	108
20244695	109	if (name != NULL)
	110	for (i = 0; log_facilities[i].name; i++)
	111	if (strcasecmp(log_facilities[i].name, name) == 0)
	112	return log_facilities[i].val;
5eaf8578	113	return SYSLOG_FACILITY_NOT_SET;
20244695	114	}
	115
	116	LogLevel
	117	log_level_number(char *name)
	118	{
	119	int i;
4394a17f	120
20244695	121	if (name != NULL)
	122	for (i = 0; log_levels[i].name; i++)
	123	if (strcasecmp(log_levels[i].name, name) == 0)
	124	return log_levels[i].val;
5eaf8578	125	return SYSLOG_LEVEL_NOT_SET;
20244695	126	}
6a17f9c2	127
	128	/* Error messages that should be logged. */
	129
	130	void
5260325f	131	error(const char *fmt,...)
6a17f9c2	132	{
5260325f	133	va_list args;
4394a17f	134
5260325f	135	va_start(args, fmt);
	136	do_log(SYSLOG_LEVEL_ERROR, fmt, args);
	137	va_end(args);
6a17f9c2	138	}
6a17f9c2	139
28463427	140	void
	141	sigdie(const char *fmt,...)
	142	{
	143	va_list args;
	144
	145	va_start(args, fmt);
	146	do_log(SYSLOG_LEVEL_FATAL, fmt, args);
	147	va_end(args);
	148	_exit(1);
	149	}
	150
	151
6a17f9c2	152	/* Log this message (information that usually should go to the log). */
	153
	154	void
bbe88b6d	155	logit(const char *fmt,...)
6a17f9c2	156	{
5260325f	157	va_list args;
4394a17f	158
5260325f	159	va_start(args, fmt);
59c97189	160	do_log(SYSLOG_LEVEL_INFO, fmt, args);
5260325f	161	va_end(args);
6a17f9c2	162	}
	163
	164	/* More detailed messages (information that does not need to go to the log). */
	165
	166	void
5260325f	167	verbose(const char *fmt,...)
6a17f9c2	168	{
5260325f	169	va_list args;
4394a17f	170
5260325f	171	va_start(args, fmt);
	172	do_log(SYSLOG_LEVEL_VERBOSE, fmt, args);
	173	va_end(args);
6a17f9c2	174	}
	175
	176	/* Debugging messages that should not be logged during normal operation. */
	177
	178	void
5260325f	179	debug(const char *fmt,...)
6a17f9c2	180	{
5260325f	181	va_list args;
4394a17f	182
5260325f	183	va_start(args, fmt);
bcbf86ec	184	do_log(SYSLOG_LEVEL_DEBUG1, fmt, args);
	185	va_end(args);
	186	}
	187
	188	void
	189	debug2(const char *fmt,...)
	190	{
	191	va_list args;
4394a17f	192
bcbf86ec	193	va_start(args, fmt);
	194	do_log(SYSLOG_LEVEL_DEBUG2, fmt, args);
	195	va_end(args);
	196	}
	197
	198	void
	199	debug3(const char *fmt,...)
	200	{
	201	va_list args;
4394a17f	202
bcbf86ec	203	va_start(args, fmt);
bcbf86ec	204	do_log(SYSLOG_LEVEL_DEBUG3, fmt, args);
5260325f	205	va_end(args);
6a17f9c2	206	}
6a17f9c2	207
20244695	208	/*
	209	* Initialize the log.
	210	*/
9d6b7add	211
20244695	212	void
20244695	213	log_init(char *av0, LogLevel level, SyslogFacility facility, int on_stderr)
9d6b7add	214	{
29c82270	215	#if defined(HAVE_OPENLOG_R) && defined(SYSLOG_DATA_INIT)
	216	struct syslog_data sdata = SYSLOG_DATA_INIT;
	217	#endif
9d6b7add	218
b1d73a9a	219	argv0 = av0;
b1d73a9a	220
20244695	221	switch (level) {
	222	case SYSLOG_LEVEL_QUIET:
	223	case SYSLOG_LEVEL_FATAL:
	224	case SYSLOG_LEVEL_ERROR:
	225	case SYSLOG_LEVEL_INFO:
	226	case SYSLOG_LEVEL_VERBOSE:
	227	case SYSLOG_LEVEL_DEBUG1:
	228	case SYSLOG_LEVEL_DEBUG2:
	229	case SYSLOG_LEVEL_DEBUG3:
	230	log_level = level;
	231	break;
	232	default:
0be033ea	233	fprintf(stderr, "Unrecognized internal syslog level code %d\n",
20244695	234	(int) level);
	235	exit(1);
	236	}
	237
	238	log_on_stderr = on_stderr;
	239	if (on_stderr)
	240	return;
	241
	242	switch (facility) {
	243	case SYSLOG_FACILITY_DAEMON:
	244	log_facility = LOG_DAEMON;
	245	break;
	246	case SYSLOG_FACILITY_USER:
	247	log_facility = LOG_USER;
	248	break;
	249	case SYSLOG_FACILITY_AUTH:
	250	log_facility = LOG_AUTH;
	251	break;
cc3067d6	252	#ifdef LOG_AUTHPRIV
	253	case SYSLOG_FACILITY_AUTHPRIV:
	254	log_facility = LOG_AUTHPRIV;
	255	break;
20244695	256	#endif
	257	case SYSLOG_FACILITY_LOCAL0:
	258	log_facility = LOG_LOCAL0;
	259	break;
	260	case SYSLOG_FACILITY_LOCAL1:
	261	log_facility = LOG_LOCAL1;
	262	break;
	263	case SYSLOG_FACILITY_LOCAL2:
	264	log_facility = LOG_LOCAL2;
	265	break;
	266	case SYSLOG_FACILITY_LOCAL3:
	267	log_facility = LOG_LOCAL3;
	268	break;
	269	case SYSLOG_FACILITY_LOCAL4:
	270	log_facility = LOG_LOCAL4;
	271	break;
	272	case SYSLOG_FACILITY_LOCAL5:
	273	log_facility = LOG_LOCAL5;
	274	break;
	275	case SYSLOG_FACILITY_LOCAL6:
	276	log_facility = LOG_LOCAL6;
	277	break;
	278	case SYSLOG_FACILITY_LOCAL7:
	279	log_facility = LOG_LOCAL7;
	280	break;
	281	default:
	282	fprintf(stderr,
0be033ea	283	"Unrecognized internal syslog facility code %d\n",
20244695	284	(int) facility);
	285	exit(1);
	286	}
29c82270	287
	288	/*
	289	* If an external library (eg libwrap) attempts to use syslog
	290	* immediately after reexec, syslog may be pointing to the wrong
	291	* facility, so we force an open/close of syslog here.
	292	*/
	293	#if defined(HAVE_OPENLOG_R) && defined(SYSLOG_DATA_INIT)
	294	openlog_r(argv0 ? argv0 : __progname, LOG_PID, log_facility, &sdata);
	295	closelog_r(&sdata);
	296	#else
	297	openlog(argv0 ? argv0 : __progname, LOG_PID, log_facility);
	298	closelog();
	299	#endif
9d6b7add	300	}
9d6b7add	301
20244695	302	#define MSGBUFSIZ 1024
20244695	303
2bae80e9	304	void
20244695	305	do_log(LogLevel level, const char *fmt, va_list args)
9d6b7add	306	{
a90ed4b3	307	#if defined(HAVE_OPENLOG_R) && defined(SYSLOG_DATA_INIT)
c453493f	308	struct syslog_data sdata = SYSLOG_DATA_INIT;
c453493f	309	#endif
20244695	310	char msgbuf[MSGBUFSIZ];
	311	char fmtbuf[MSGBUFSIZ];
	312	char *txt = NULL;
	313	int pri = LOG_INFO;
	314
	315	if (level > log_level)
	316	return;
	317
	318	switch (level) {
	319	case SYSLOG_LEVEL_FATAL:
	320	if (!log_on_stderr)
	321	txt = "fatal";
	322	pri = LOG_CRIT;
	323	break;
	324	case SYSLOG_LEVEL_ERROR:
	325	if (!log_on_stderr)
	326	txt = "error";
	327	pri = LOG_ERR;
	328	break;
	329	case SYSLOG_LEVEL_INFO:
	330	pri = LOG_INFO;
	331	break;
	332	case SYSLOG_LEVEL_VERBOSE:
	333	pri = LOG_INFO;
	334	break;
	335	case SYSLOG_LEVEL_DEBUG1:
	336	txt = "debug1";
	337	pri = LOG_DEBUG;
	338	break;
	339	case SYSLOG_LEVEL_DEBUG2:
	340	txt = "debug2";
	341	pri = LOG_DEBUG;
	342	break;
	343	case SYSLOG_LEVEL_DEBUG3:
	344	txt = "debug3";
	345	pri = LOG_DEBUG;
	346	break;
	347	default:
	348	txt = "internal error";
	349	pri = LOG_ERR;
	350	break;
	351	}
	352	if (txt != NULL) {
	353	snprintf(fmtbuf, sizeof(fmtbuf), "%s: %s", txt, fmt);
	354	vsnprintf(msgbuf, sizeof(msgbuf), fmtbuf, args);
	355	} else {
	356	vsnprintf(msgbuf, sizeof(msgbuf), fmt, args);
	357	}
ac87b3c2	358	strnvis(fmtbuf, msgbuf, sizeof(fmtbuf),
ac87b3c2	359	log_on_stderr ? LOG_STDERR_VIS : LOG_SYSLOG_VIS);
20244695	360	if (log_on_stderr) {
5b0fe364	361	snprintf(msgbuf, sizeof msgbuf, "%s\r\n", fmtbuf);
5b0fe364	362	write(STDERR_FILENO, msgbuf, strlen(msgbuf));
20244695	363	} else {
a90ed4b3	364	#if defined(HAVE_OPENLOG_R) && defined(SYSLOG_DATA_INIT)
c453493f	365	openlog_r(argv0 ? argv0 : __progname, LOG_PID, log_facility, &sdata);
5b0fe364	366	syslog_r(pri, &sdata, "%.500s", fmtbuf);
c453493f	367	closelog_r(&sdata);
c453493f	368	#else
20244695	369	openlog(argv0 ? argv0 : __progname, LOG_PID, log_facility);
63cada0a	370	syslog(pri, "%.500s", fmtbuf);
20244695	371	closelog();
c453493f	372	#endif
20244695	373	}
9d6b7add	374	}