[openssh.git] / log.c

/* $OpenBSD: log.c,v 1.31 2006/03/25 13:17:02 djm 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 "log.h"
#include "xmalloc.h"

#include <syslog.h>
#if defined(HAVE_STRNVIS) && defined(HAVE_VIS_H)
# include <vis.h>
#endif

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);
}

/* 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
c1cb7bae	1	/* $OpenBSD: log.c,v 1.31 2006/03/25 13:17:02 djm 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
42f11eb2	39	#include "log.h"
6a17f9c2	40	#include "xmalloc.h"
6a17f9c2	41
20244695	42	#include <syslog.h>
0a23d79f	43	#if defined(HAVE_STRNVIS) && defined(HAVE_VIS_H)
	44	# include <vis.h>
	45	#endif
20244695	46
	47	static LogLevel log_level = SYSLOG_LEVEL_INFO;
	48	static int log_on_stderr = 1;
	49	static int log_facility = LOG_AUTH;
	50	static char *argv0;
	51
	52	extern char *__progname;
	53
ac87b3c2	54	#define LOG_SYSLOG_VIS (VIS_CSTYLE\|VIS_NL\|VIS_TAB\|VIS_OCTAL)
	55	#define LOG_STDERR_VIS (VIS_SAFE\|VIS_OCTAL)
	56
20244695	57	/* textual representation of log-facilities/levels */
	58
	59	static struct {
	60	const char *name;
	61	SyslogFacility val;
	62	} log_facilities[] = {
	63	{ "DAEMON", SYSLOG_FACILITY_DAEMON },
	64	{ "USER", SYSLOG_FACILITY_USER },
	65	{ "AUTH", SYSLOG_FACILITY_AUTH },
cc3067d6	66	#ifdef LOG_AUTHPRIV
	67	{ "AUTHPRIV", SYSLOG_FACILITY_AUTHPRIV },
	68	#endif
20244695	69	{ "LOCAL0", SYSLOG_FACILITY_LOCAL0 },
	70	{ "LOCAL1", SYSLOG_FACILITY_LOCAL1 },
	71	{ "LOCAL2", SYSLOG_FACILITY_LOCAL2 },
	72	{ "LOCAL3", SYSLOG_FACILITY_LOCAL3 },
	73	{ "LOCAL4", SYSLOG_FACILITY_LOCAL4 },
	74	{ "LOCAL5", SYSLOG_FACILITY_LOCAL5 },
	75	{ "LOCAL6", SYSLOG_FACILITY_LOCAL6 },
	76	{ "LOCAL7", SYSLOG_FACILITY_LOCAL7 },
5eaf8578	77	{ NULL, SYSLOG_FACILITY_NOT_SET }
20244695	78	};
	79
	80	static struct {
	81	const char *name;
	82	LogLevel val;
	83	} log_levels[] =
	84	{
	85	{ "QUIET", SYSLOG_LEVEL_QUIET },
	86	{ "FATAL", SYSLOG_LEVEL_FATAL },
	87	{ "ERROR", SYSLOG_LEVEL_ERROR },
	88	{ "INFO", SYSLOG_LEVEL_INFO },
	89	{ "VERBOSE", SYSLOG_LEVEL_VERBOSE },
	90	{ "DEBUG", SYSLOG_LEVEL_DEBUG1 },
	91	{ "DEBUG1", SYSLOG_LEVEL_DEBUG1 },
	92	{ "DEBUG2", SYSLOG_LEVEL_DEBUG2 },
	93	{ "DEBUG3", SYSLOG_LEVEL_DEBUG3 },
5eaf8578	94	{ NULL, SYSLOG_LEVEL_NOT_SET }
20244695	95	};
	96
	97	SyslogFacility
	98	log_facility_number(char *name)
	99	{
	100	int i;
4394a17f	101
20244695	102	if (name != NULL)
	103	for (i = 0; log_facilities[i].name; i++)
	104	if (strcasecmp(log_facilities[i].name, name) == 0)
	105	return log_facilities[i].val;
5eaf8578	106	return SYSLOG_FACILITY_NOT_SET;
20244695	107	}
	108
	109	LogLevel
	110	log_level_number(char *name)
	111	{
	112	int i;
4394a17f	113
20244695	114	if (name != NULL)
	115	for (i = 0; log_levels[i].name; i++)
	116	if (strcasecmp(log_levels[i].name, name) == 0)
	117	return log_levels[i].val;
5eaf8578	118	return SYSLOG_LEVEL_NOT_SET;
20244695	119	}
6a17f9c2	120
	121	/* Error messages that should be logged. */
	122
	123	void
5260325f	124	error(const char *fmt,...)
6a17f9c2	125	{
5260325f	126	va_list args;
4394a17f	127
5260325f	128	va_start(args, fmt);
	129	do_log(SYSLOG_LEVEL_ERROR, fmt, args);
	130	va_end(args);
6a17f9c2	131	}
	132
	133	/* Log this message (information that usually should go to the log). */
	134
	135	void
bbe88b6d	136	logit(const char *fmt,...)
6a17f9c2	137	{
5260325f	138	va_list args;
4394a17f	139
5260325f	140	va_start(args, fmt);
59c97189	141	do_log(SYSLOG_LEVEL_INFO, fmt, args);
5260325f	142	va_end(args);
6a17f9c2	143	}
	144
	145	/* More detailed messages (information that does not need to go to the log). */
	146
	147	void
5260325f	148	verbose(const char *fmt,...)
6a17f9c2	149	{
5260325f	150	va_list args;
4394a17f	151
5260325f	152	va_start(args, fmt);
	153	do_log(SYSLOG_LEVEL_VERBOSE, fmt, args);
	154	va_end(args);
6a17f9c2	155	}
	156
	157	/* Debugging messages that should not be logged during normal operation. */
	158
	159	void
5260325f	160	debug(const char *fmt,...)
6a17f9c2	161	{
5260325f	162	va_list args;
4394a17f	163
5260325f	164	va_start(args, fmt);
bcbf86ec	165	do_log(SYSLOG_LEVEL_DEBUG1, fmt, args);
	166	va_end(args);
	167	}
	168
	169	void
	170	debug2(const char *fmt,...)
	171	{
	172	va_list args;
4394a17f	173
bcbf86ec	174	va_start(args, fmt);
	175	do_log(SYSLOG_LEVEL_DEBUG2, fmt, args);
	176	va_end(args);
	177	}
	178
	179	void
	180	debug3(const char *fmt,...)
	181	{
	182	va_list args;
4394a17f	183
bcbf86ec	184	va_start(args, fmt);
bcbf86ec	185	do_log(SYSLOG_LEVEL_DEBUG3, fmt, args);
5260325f	186	va_end(args);
6a17f9c2	187	}
6a17f9c2	188
20244695	189	/*
	190	* Initialize the log.
	191	*/
9d6b7add	192
20244695	193	void
20244695	194	log_init(char *av0, LogLevel level, SyslogFacility facility, int on_stderr)
9d6b7add	195	{
29c82270	196	#if defined(HAVE_OPENLOG_R) && defined(SYSLOG_DATA_INIT)
	197	struct syslog_data sdata = SYSLOG_DATA_INIT;
	198	#endif
9d6b7add	199
b1d73a9a	200	argv0 = av0;
b1d73a9a	201
20244695	202	switch (level) {
	203	case SYSLOG_LEVEL_QUIET:
	204	case SYSLOG_LEVEL_FATAL:
	205	case SYSLOG_LEVEL_ERROR:
	206	case SYSLOG_LEVEL_INFO:
	207	case SYSLOG_LEVEL_VERBOSE:
	208	case SYSLOG_LEVEL_DEBUG1:
	209	case SYSLOG_LEVEL_DEBUG2:
	210	case SYSLOG_LEVEL_DEBUG3:
	211	log_level = level;
	212	break;
	213	default:
0be033ea	214	fprintf(stderr, "Unrecognized internal syslog level code %d\n",
20244695	215	(int) level);
	216	exit(1);
	217	}
	218
	219	log_on_stderr = on_stderr;
	220	if (on_stderr)
	221	return;
	222
	223	switch (facility) {
	224	case SYSLOG_FACILITY_DAEMON:
	225	log_facility = LOG_DAEMON;
	226	break;
	227	case SYSLOG_FACILITY_USER:
	228	log_facility = LOG_USER;
	229	break;
	230	case SYSLOG_FACILITY_AUTH:
	231	log_facility = LOG_AUTH;
	232	break;
cc3067d6	233	#ifdef LOG_AUTHPRIV
	234	case SYSLOG_FACILITY_AUTHPRIV:
	235	log_facility = LOG_AUTHPRIV;
	236	break;
20244695	237	#endif
	238	case SYSLOG_FACILITY_LOCAL0:
	239	log_facility = LOG_LOCAL0;
	240	break;
	241	case SYSLOG_FACILITY_LOCAL1:
	242	log_facility = LOG_LOCAL1;
	243	break;
	244	case SYSLOG_FACILITY_LOCAL2:
	245	log_facility = LOG_LOCAL2;
	246	break;
	247	case SYSLOG_FACILITY_LOCAL3:
	248	log_facility = LOG_LOCAL3;
	249	break;
	250	case SYSLOG_FACILITY_LOCAL4:
	251	log_facility = LOG_LOCAL4;
	252	break;
	253	case SYSLOG_FACILITY_LOCAL5:
	254	log_facility = LOG_LOCAL5;
	255	break;
	256	case SYSLOG_FACILITY_LOCAL6:
	257	log_facility = LOG_LOCAL6;
	258	break;
	259	case SYSLOG_FACILITY_LOCAL7:
	260	log_facility = LOG_LOCAL7;
	261	break;
	262	default:
	263	fprintf(stderr,
0be033ea	264	"Unrecognized internal syslog facility code %d\n",
20244695	265	(int) facility);
	266	exit(1);
	267	}
29c82270	268
	269	/*
	270	* If an external library (eg libwrap) attempts to use syslog
	271	* immediately after reexec, syslog may be pointing to the wrong
	272	* facility, so we force an open/close of syslog here.
	273	*/
	274	#if defined(HAVE_OPENLOG_R) && defined(SYSLOG_DATA_INIT)
	275	openlog_r(argv0 ? argv0 : __progname, LOG_PID, log_facility, &sdata);
	276	closelog_r(&sdata);
	277	#else
	278	openlog(argv0 ? argv0 : __progname, LOG_PID, log_facility);
	279	closelog();
	280	#endif
9d6b7add	281	}
9d6b7add	282
20244695	283	#define MSGBUFSIZ 1024
20244695	284
2bae80e9	285	void
20244695	286	do_log(LogLevel level, const char *fmt, va_list args)
9d6b7add	287	{
a90ed4b3	288	#if defined(HAVE_OPENLOG_R) && defined(SYSLOG_DATA_INIT)
c453493f	289	struct syslog_data sdata = SYSLOG_DATA_INIT;
c453493f	290	#endif
20244695	291	char msgbuf[MSGBUFSIZ];
	292	char fmtbuf[MSGBUFSIZ];
	293	char *txt = NULL;
	294	int pri = LOG_INFO;
	295
	296	if (level > log_level)
	297	return;
	298
	299	switch (level) {
	300	case SYSLOG_LEVEL_FATAL:
	301	if (!log_on_stderr)
	302	txt = "fatal";
	303	pri = LOG_CRIT;
	304	break;
	305	case SYSLOG_LEVEL_ERROR:
	306	if (!log_on_stderr)
	307	txt = "error";
	308	pri = LOG_ERR;
	309	break;
	310	case SYSLOG_LEVEL_INFO:
	311	pri = LOG_INFO;
	312	break;
	313	case SYSLOG_LEVEL_VERBOSE:
	314	pri = LOG_INFO;
	315	break;
	316	case SYSLOG_LEVEL_DEBUG1:
	317	txt = "debug1";
	318	pri = LOG_DEBUG;
	319	break;
	320	case SYSLOG_LEVEL_DEBUG2:
	321	txt = "debug2";
	322	pri = LOG_DEBUG;
	323	break;
	324	case SYSLOG_LEVEL_DEBUG3:
	325	txt = "debug3";
	326	pri = LOG_DEBUG;
	327	break;
	328	default:
	329	txt = "internal error";
	330	pri = LOG_ERR;
	331	break;
	332	}
	333	if (txt != NULL) {
	334	snprintf(fmtbuf, sizeof(fmtbuf), "%s: %s", txt, fmt);
	335	vsnprintf(msgbuf, sizeof(msgbuf), fmtbuf, args);
	336	} else {
	337	vsnprintf(msgbuf, sizeof(msgbuf), fmt, args);
	338	}
ac87b3c2	339	strnvis(fmtbuf, msgbuf, sizeof(fmtbuf),
ac87b3c2	340	log_on_stderr ? LOG_STDERR_VIS : LOG_SYSLOG_VIS);
20244695	341	if (log_on_stderr) {
5b0fe364	342	snprintf(msgbuf, sizeof msgbuf, "%s\r\n", fmtbuf);
5b0fe364	343	write(STDERR_FILENO, msgbuf, strlen(msgbuf));
20244695	344	} else {
a90ed4b3	345	#if defined(HAVE_OPENLOG_R) && defined(SYSLOG_DATA_INIT)
c453493f	346	openlog_r(argv0 ? argv0 : __progname, LOG_PID, log_facility, &sdata);
5b0fe364	347	syslog_r(pri, &sdata, "%.500s", fmtbuf);
c453493f	348	closelog_r(&sdata);
c453493f	349	#else
20244695	350	openlog(argv0 ? argv0 : __progname, LOG_PID, log_facility);
63cada0a	351	syslog(pri, "%.500s", fmtbuf);
20244695	352	closelog();
c453493f	353	#endif
20244695	354	}
9d6b7add	355	}