[gssapi-openssh.git] / openssh / 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,...)
{
#ifdef DO_LOG_SAFE_IN_SIGHAND
	va_list args;

	va_start(args, fmt);
	do_log(SYSLOG_LEVEL_FATAL, fmt, args);
	va_end(args);
#endif
	_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
30460aeb	1	/* $OpenBSD: log.c,v 1.39 2006/08/18 09:13:25 deraadt Exp $ */
3c0ef626	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	*/
	13	/*
	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.
	35	*/
	36
	37	#include "includes.h"
3c0ef626	38
30460aeb	39	#include <sys/types.h>
3c0ef626	40
30460aeb	41	#include <stdarg.h>
	42	#include <stdio.h>
	43	#include <stdlib.h>
	44	#include <string.h>
3c0ef626	45	#include <syslog.h>
30460aeb	46	#include <unistd.h>
29d88157	47	#if defined(HAVE_STRNVIS) && defined(HAVE_VIS_H)
	48	# include <vis.h>
	49	#endif
3c0ef626	50
30460aeb	51	#include "xmalloc.h"
	52	#include "log.h"
	53
3c0ef626	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
7e82606e	61	#define LOG_SYSLOG_VIS (VIS_CSTYLE\|VIS_NL\|VIS_TAB\|VIS_OCTAL)
	62	#define LOG_STDERR_VIS (VIS_SAFE\|VIS_OCTAL)
	63
3c0ef626	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 },
	73	#ifdef LOG_AUTHPRIV
	74	{ "AUTHPRIV", SYSLOG_FACILITY_AUTHPRIV },
	75	#endif
	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 },
b59afbfe	84	{ NULL, SYSLOG_FACILITY_NOT_SET }
3c0ef626	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 },
b59afbfe	101	{ NULL, SYSLOG_LEVEL_NOT_SET }
3c0ef626	102	};
3c0ef626	103
3c0ef626	104	SyslogFacility
	105	log_facility_number(char *name)
	106	{
	107	int i;
d03f4262	108
3c0ef626	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;
b59afbfe	113	return SYSLOG_FACILITY_NOT_SET;
3c0ef626	114	}
	115
	116	LogLevel
	117	log_level_number(char *name)
	118	{
	119	int i;
d03f4262	120
3c0ef626	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;
b59afbfe	125	return SYSLOG_LEVEL_NOT_SET;
3c0ef626	126	}
	127
	128	/* Error messages that should be logged. */
	129
	130	void
	131	error(const char *fmt,...)
	132	{
	133	va_list args;
d03f4262	134
3c0ef626	135	va_start(args, fmt);
	136	do_log(SYSLOG_LEVEL_ERROR, fmt, args);
	137	va_end(args);
	138	}
	139
30460aeb	140	void
	141	sigdie(const char *fmt,...)
	142	{
	143	#ifdef DO_LOG_SAFE_IN_SIGHAND
	144	va_list args;
	145
	146	va_start(args, fmt);
	147	do_log(SYSLOG_LEVEL_FATAL, fmt, args);
	148	va_end(args);
	149	#endif
	150	_exit(1);
	151	}
	152
	153
3c0ef626	154	/* Log this message (information that usually should go to the log). */
	155
	156	void
7cac2b65	157	logit(const char *fmt,...)
3c0ef626	158	{
3c0ef626	159	va_list args;
d03f4262	160
3c0ef626	161	va_start(args, fmt);
	162	do_log(SYSLOG_LEVEL_INFO, fmt, args);
	163	va_end(args);
	164	}
	165
	166	/* More detailed messages (information that does not need to go to the log). */
	167
	168	void
	169	verbose(const char *fmt,...)
	170	{
	171	va_list args;
d03f4262	172
3c0ef626	173	va_start(args, fmt);
	174	do_log(SYSLOG_LEVEL_VERBOSE, fmt, args);
	175	va_end(args);
	176	}
	177
	178	/* Debugging messages that should not be logged during normal operation. */
	179
	180	void
	181	debug(const char *fmt,...)
	182	{
	183	va_list args;
d03f4262	184
3c0ef626	185	va_start(args, fmt);
	186	do_log(SYSLOG_LEVEL_DEBUG1, fmt, args);
	187	va_end(args);
	188	}
	189
	190	void
	191	debug2(const char *fmt,...)
	192	{
	193	va_list args;
d03f4262	194
3c0ef626	195	va_start(args, fmt);
	196	do_log(SYSLOG_LEVEL_DEBUG2, fmt, args);
	197	va_end(args);
	198	}
	199
	200	void
	201	debug3(const char *fmt,...)
	202	{
	203	va_list args;
d03f4262	204
3c0ef626	205	va_start(args, fmt);
	206	do_log(SYSLOG_LEVEL_DEBUG3, fmt, args);
	207	va_end(args);
	208	}
	209
3c0ef626	210	/*
	211	* Initialize the log.
	212	*/
	213
	214	void
	215	log_init(char *av0, LogLevel level, SyslogFacility facility, int on_stderr)
	216	{
dfddba3d	217	#if defined(HAVE_OPENLOG_R) && defined(SYSLOG_DATA_INIT)
	218	struct syslog_data sdata = SYSLOG_DATA_INIT;
	219	#endif
8b32eddc	220
3c0ef626	221	argv0 = av0;
	222
	223	switch (level) {
	224	case SYSLOG_LEVEL_QUIET:
	225	case SYSLOG_LEVEL_FATAL:
	226	case SYSLOG_LEVEL_ERROR:
	227	case SYSLOG_LEVEL_INFO:
	228	case SYSLOG_LEVEL_VERBOSE:
	229	case SYSLOG_LEVEL_DEBUG1:
	230	case SYSLOG_LEVEL_DEBUG2:
	231	case SYSLOG_LEVEL_DEBUG3:
	232	log_level = level;
	233	break;
	234	default:
	235	fprintf(stderr, "Unrecognized internal syslog level code %d\n",
	236	(int) level);
	237	exit(1);
	238	}
	239
	240	log_on_stderr = on_stderr;
	241	if (on_stderr)
	242	return;
	243
	244	switch (facility) {
	245	case SYSLOG_FACILITY_DAEMON:
	246	log_facility = LOG_DAEMON;
	247	break;
	248	case SYSLOG_FACILITY_USER:
	249	log_facility = LOG_USER;
	250	break;
	251	case SYSLOG_FACILITY_AUTH:
	252	log_facility = LOG_AUTH;
	253	break;
	254	#ifdef LOG_AUTHPRIV
	255	case SYSLOG_FACILITY_AUTHPRIV:
	256	log_facility = LOG_AUTHPRIV;
	257	break;
	258	#endif
	259	case SYSLOG_FACILITY_LOCAL0:
	260	log_facility = LOG_LOCAL0;
	261	break;
	262	case SYSLOG_FACILITY_LOCAL1:
	263	log_facility = LOG_LOCAL1;
	264	break;
	265	case SYSLOG_FACILITY_LOCAL2:
	266	log_facility = LOG_LOCAL2;
	267	break;
	268	case SYSLOG_FACILITY_LOCAL3:
	269	log_facility = LOG_LOCAL3;
	270	break;
	271	case SYSLOG_FACILITY_LOCAL4:
	272	log_facility = LOG_LOCAL4;
	273	break;
	274	case SYSLOG_FACILITY_LOCAL5:
	275	log_facility = LOG_LOCAL5;
	276	break;
	277	case SYSLOG_FACILITY_LOCAL6:
	278	log_facility = LOG_LOCAL6;
	279	break;
	280	case SYSLOG_FACILITY_LOCAL7:
	281	log_facility = LOG_LOCAL7;
	282	break;
	283	default:
	284	fprintf(stderr,
285	"Unrecognized internal syslog facility code %d\n",
286	(int) facility);
287	exit(1);
288	}
dfddba3d	289
	290	/*
	291	* If an external library (eg libwrap) attempts to use syslog
	292	* immediately after reexec, syslog may be pointing to the wrong
	293	* facility, so we force an open/close of syslog here.
	294	*/
	295	#if defined(HAVE_OPENLOG_R) && defined(SYSLOG_DATA_INIT)
	296	openlog_r(argv0 ? argv0 : __progname, LOG_PID, log_facility, &sdata);
	297	closelog_r(&sdata);
	298	#else
	299	openlog(argv0 ? argv0 : __progname, LOG_PID, log_facility);
	300	closelog();
	301	#endif
3c0ef626	302	}
	303
	304	#define MSGBUFSIZ 1024
	305
b59afbfe	306	void
3c0ef626	307	do_log(LogLevel level, const char *fmt, va_list args)
3c0ef626	308	{
540d72c3	309	#if defined(HAVE_OPENLOG_R) && defined(SYSLOG_DATA_INIT)
7cac2b65	310	struct syslog_data sdata = SYSLOG_DATA_INIT;
7cac2b65	311	#endif
3c0ef626	312	char msgbuf[MSGBUFSIZ];
	313	char fmtbuf[MSGBUFSIZ];
	314	char *txt = NULL;
	315	int pri = LOG_INFO;
	316
	317	if (level > log_level)
	318	return;
	319
	320	switch (level) {
	321	case SYSLOG_LEVEL_FATAL:
	322	if (!log_on_stderr)
	323	txt = "fatal";
	324	pri = LOG_CRIT;
	325	break;
	326	case SYSLOG_LEVEL_ERROR:
	327	if (!log_on_stderr)
	328	txt = "error";
	329	pri = LOG_ERR;
	330	break;
	331	case SYSLOG_LEVEL_INFO:
	332	pri = LOG_INFO;
	333	break;
	334	case SYSLOG_LEVEL_VERBOSE:
	335	pri = LOG_INFO;
	336	break;
	337	case SYSLOG_LEVEL_DEBUG1:
	338	txt = "debug1";
	339	pri = LOG_DEBUG;
	340	break;
	341	case SYSLOG_LEVEL_DEBUG2:
	342	txt = "debug2";
	343	pri = LOG_DEBUG;
	344	break;
	345	case SYSLOG_LEVEL_DEBUG3:
	346	txt = "debug3";
	347	pri = LOG_DEBUG;
	348	break;
	349	default:
	350	txt = "internal error";
	351	pri = LOG_ERR;
	352	break;
	353	}
	354	if (txt != NULL) {
	355	snprintf(fmtbuf, sizeof(fmtbuf), "%s: %s", txt, fmt);
	356	vsnprintf(msgbuf, sizeof(msgbuf), fmtbuf, args);
	357	} else {
	358	vsnprintf(msgbuf, sizeof(msgbuf), fmt, args);
	359	}
7e82606e	360	strnvis(fmtbuf, msgbuf, sizeof(fmtbuf),
7e82606e	361	log_on_stderr ? LOG_STDERR_VIS : LOG_SYSLOG_VIS);
3c0ef626	362	if (log_on_stderr) {
7cac2b65	363	snprintf(msgbuf, sizeof msgbuf, "%s\r\n", fmtbuf);
7cac2b65	364	write(STDERR_FILENO, msgbuf, strlen(msgbuf));
3c0ef626	365	} else {
540d72c3	366	#if defined(HAVE_OPENLOG_R) && defined(SYSLOG_DATA_INIT)
7cac2b65	367	openlog_r(argv0 ? argv0 : __progname, LOG_PID, log_facility, &sdata);
	368	syslog_r(pri, &sdata, "%.500s", fmtbuf);
	369	closelog_r(&sdata);
	370	#else
3c0ef626	371	openlog(argv0 ? argv0 : __progname, LOG_PID, log_facility);
bfe49944	372	syslog(pri, "%.500s", fmtbuf);
3c0ef626	373	closelog();
7cac2b65	374	#endif
3c0ef626	375	}
3c0ef626	376	}