[openssh.git] / log.c

/* $OpenBSD: log.c,v 1.33 2006/07/10 16:37:36 stevesk 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 <stdarg.h>
#include <syslog.h>
#if defined(HAVE_STRNVIS) && defined(HAVE_VIS_H)
# include <vis.h>
#endif

#include "log.h"
#include "xmalloc.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);
}

/* 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
4c72fcfd	1	/* $OpenBSD: log.c,v 1.33 2006/07/10 16:37:36 stevesk 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
4c72fcfd	39	#include <stdarg.h>
20244695	40	#include <syslog.h>
0a23d79f	41	#if defined(HAVE_STRNVIS) && defined(HAVE_VIS_H)
	42	# include <vis.h>
	43	#endif
20244695	44
ca1df159	45	#include "log.h"
	46	#include "xmalloc.h"
	47
20244695	48	static LogLevel log_level = SYSLOG_LEVEL_INFO;
	49	static int log_on_stderr = 1;
	50	static int log_facility = LOG_AUTH;
	51	static char *argv0;
	52
	53	extern char *__progname;
	54
ac87b3c2	55	#define LOG_SYSLOG_VIS (VIS_CSTYLE\|VIS_NL\|VIS_TAB\|VIS_OCTAL)
	56	#define LOG_STDERR_VIS (VIS_SAFE\|VIS_OCTAL)
	57
20244695	58	/* textual representation of log-facilities/levels */
	59
	60	static struct {
	61	const char *name;
	62	SyslogFacility val;
	63	} log_facilities[] = {
	64	{ "DAEMON", SYSLOG_FACILITY_DAEMON },
	65	{ "USER", SYSLOG_FACILITY_USER },
	66	{ "AUTH", SYSLOG_FACILITY_AUTH },
cc3067d6	67	#ifdef LOG_AUTHPRIV
	68	{ "AUTHPRIV", SYSLOG_FACILITY_AUTHPRIV },
	69	#endif
20244695	70	{ "LOCAL0", SYSLOG_FACILITY_LOCAL0 },
	71	{ "LOCAL1", SYSLOG_FACILITY_LOCAL1 },
	72	{ "LOCAL2", SYSLOG_FACILITY_LOCAL2 },
	73	{ "LOCAL3", SYSLOG_FACILITY_LOCAL3 },
	74	{ "LOCAL4", SYSLOG_FACILITY_LOCAL4 },
	75	{ "LOCAL5", SYSLOG_FACILITY_LOCAL5 },
	76	{ "LOCAL6", SYSLOG_FACILITY_LOCAL6 },
	77	{ "LOCAL7", SYSLOG_FACILITY_LOCAL7 },
5eaf8578	78	{ NULL, SYSLOG_FACILITY_NOT_SET }
20244695	79	};
	80
	81	static struct {
	82	const char *name;
	83	LogLevel val;
	84	} log_levels[] =
	85	{
	86	{ "QUIET", SYSLOG_LEVEL_QUIET },
	87	{ "FATAL", SYSLOG_LEVEL_FATAL },
	88	{ "ERROR", SYSLOG_LEVEL_ERROR },
	89	{ "INFO", SYSLOG_LEVEL_INFO },
	90	{ "VERBOSE", SYSLOG_LEVEL_VERBOSE },
	91	{ "DEBUG", SYSLOG_LEVEL_DEBUG1 },
	92	{ "DEBUG1", SYSLOG_LEVEL_DEBUG1 },
	93	{ "DEBUG2", SYSLOG_LEVEL_DEBUG2 },
	94	{ "DEBUG3", SYSLOG_LEVEL_DEBUG3 },
5eaf8578	95	{ NULL, SYSLOG_LEVEL_NOT_SET }
20244695	96	};
	97
	98	SyslogFacility
	99	log_facility_number(char *name)
	100	{
	101	int i;
4394a17f	102
20244695	103	if (name != NULL)
	104	for (i = 0; log_facilities[i].name; i++)
	105	if (strcasecmp(log_facilities[i].name, name) == 0)
	106	return log_facilities[i].val;
5eaf8578	107	return SYSLOG_FACILITY_NOT_SET;
20244695	108	}
	109
	110	LogLevel
	111	log_level_number(char *name)
	112	{
	113	int i;
4394a17f	114
20244695	115	if (name != NULL)
	116	for (i = 0; log_levels[i].name; i++)
	117	if (strcasecmp(log_levels[i].name, name) == 0)
	118	return log_levels[i].val;
5eaf8578	119	return SYSLOG_LEVEL_NOT_SET;
20244695	120	}
6a17f9c2	121
	122	/* Error messages that should be logged. */
	123
	124	void
5260325f	125	error(const char *fmt,...)
6a17f9c2	126	{
5260325f	127	va_list args;
4394a17f	128
5260325f	129	va_start(args, fmt);
	130	do_log(SYSLOG_LEVEL_ERROR, fmt, args);
	131	va_end(args);
6a17f9c2	132	}
	133
	134	/* Log this message (information that usually should go to the log). */
	135
	136	void
bbe88b6d	137	logit(const char *fmt,...)
6a17f9c2	138	{
5260325f	139	va_list args;
4394a17f	140
5260325f	141	va_start(args, fmt);
59c97189	142	do_log(SYSLOG_LEVEL_INFO, fmt, args);
5260325f	143	va_end(args);
6a17f9c2	144	}
	145
	146	/* More detailed messages (information that does not need to go to the log). */
	147
	148	void
5260325f	149	verbose(const char *fmt,...)
6a17f9c2	150	{
5260325f	151	va_list args;
4394a17f	152
5260325f	153	va_start(args, fmt);
	154	do_log(SYSLOG_LEVEL_VERBOSE, fmt, args);
	155	va_end(args);
6a17f9c2	156	}
	157
	158	/* Debugging messages that should not be logged during normal operation. */
	159
	160	void
5260325f	161	debug(const char *fmt,...)
6a17f9c2	162	{
5260325f	163	va_list args;
4394a17f	164
5260325f	165	va_start(args, fmt);
bcbf86ec	166	do_log(SYSLOG_LEVEL_DEBUG1, fmt, args);
	167	va_end(args);
	168	}
	169
	170	void
	171	debug2(const char *fmt,...)
	172	{
	173	va_list args;
4394a17f	174
bcbf86ec	175	va_start(args, fmt);
	176	do_log(SYSLOG_LEVEL_DEBUG2, fmt, args);
	177	va_end(args);
	178	}
	179
	180	void
	181	debug3(const char *fmt,...)
	182	{
	183	va_list args;
4394a17f	184
bcbf86ec	185	va_start(args, fmt);
bcbf86ec	186	do_log(SYSLOG_LEVEL_DEBUG3, fmt, args);
5260325f	187	va_end(args);
6a17f9c2	188	}
6a17f9c2	189
20244695	190	/*
	191	* Initialize the log.
	192	*/
9d6b7add	193
20244695	194	void
20244695	195	log_init(char *av0, LogLevel level, SyslogFacility facility, int on_stderr)
9d6b7add	196	{
29c82270	197	#if defined(HAVE_OPENLOG_R) && defined(SYSLOG_DATA_INIT)
	198	struct syslog_data sdata = SYSLOG_DATA_INIT;
	199	#endif
9d6b7add	200
b1d73a9a	201	argv0 = av0;
b1d73a9a	202
20244695	203	switch (level) {
	204	case SYSLOG_LEVEL_QUIET:
	205	case SYSLOG_LEVEL_FATAL:
	206	case SYSLOG_LEVEL_ERROR:
	207	case SYSLOG_LEVEL_INFO:
	208	case SYSLOG_LEVEL_VERBOSE:
	209	case SYSLOG_LEVEL_DEBUG1:
	210	case SYSLOG_LEVEL_DEBUG2:
	211	case SYSLOG_LEVEL_DEBUG3:
	212	log_level = level;
	213	break;
	214	default:
0be033ea	215	fprintf(stderr, "Unrecognized internal syslog level code %d\n",
20244695	216	(int) level);
	217	exit(1);
	218	}
	219
	220	log_on_stderr = on_stderr;
	221	if (on_stderr)
	222	return;
	223
	224	switch (facility) {
	225	case SYSLOG_FACILITY_DAEMON:
	226	log_facility = LOG_DAEMON;
	227	break;
	228	case SYSLOG_FACILITY_USER:
	229	log_facility = LOG_USER;
	230	break;
	231	case SYSLOG_FACILITY_AUTH:
	232	log_facility = LOG_AUTH;
	233	break;
cc3067d6	234	#ifdef LOG_AUTHPRIV
	235	case SYSLOG_FACILITY_AUTHPRIV:
	236	log_facility = LOG_AUTHPRIV;
	237	break;
20244695	238	#endif
	239	case SYSLOG_FACILITY_LOCAL0:
	240	log_facility = LOG_LOCAL0;
	241	break;
	242	case SYSLOG_FACILITY_LOCAL1:
	243	log_facility = LOG_LOCAL1;
	244	break;
	245	case SYSLOG_FACILITY_LOCAL2:
	246	log_facility = LOG_LOCAL2;
	247	break;
	248	case SYSLOG_FACILITY_LOCAL3:
	249	log_facility = LOG_LOCAL3;
	250	break;
	251	case SYSLOG_FACILITY_LOCAL4:
	252	log_facility = LOG_LOCAL4;
	253	break;
	254	case SYSLOG_FACILITY_LOCAL5:
	255	log_facility = LOG_LOCAL5;
	256	break;
	257	case SYSLOG_FACILITY_LOCAL6:
	258	log_facility = LOG_LOCAL6;
	259	break;
	260	case SYSLOG_FACILITY_LOCAL7:
	261	log_facility = LOG_LOCAL7;
	262	break;
	263	default:
	264	fprintf(stderr,
0be033ea	265	"Unrecognized internal syslog facility code %d\n",
20244695	266	(int) facility);
	267	exit(1);
	268	}
29c82270	269
	270	/*
	271	* If an external library (eg libwrap) attempts to use syslog
	272	* immediately after reexec, syslog may be pointing to the wrong
	273	* facility, so we force an open/close of syslog here.
	274	*/
	275	#if defined(HAVE_OPENLOG_R) && defined(SYSLOG_DATA_INIT)
	276	openlog_r(argv0 ? argv0 : __progname, LOG_PID, log_facility, &sdata);
	277	closelog_r(&sdata);
	278	#else
	279	openlog(argv0 ? argv0 : __progname, LOG_PID, log_facility);
	280	closelog();
	281	#endif
9d6b7add	282	}
9d6b7add	283
20244695	284	#define MSGBUFSIZ 1024
20244695	285
2bae80e9	286	void
20244695	287	do_log(LogLevel level, const char *fmt, va_list args)
9d6b7add	288	{
a90ed4b3	289	#if defined(HAVE_OPENLOG_R) && defined(SYSLOG_DATA_INIT)
c453493f	290	struct syslog_data sdata = SYSLOG_DATA_INIT;
c453493f	291	#endif
20244695	292	char msgbuf[MSGBUFSIZ];
	293	char fmtbuf[MSGBUFSIZ];
	294	char *txt = NULL;
	295	int pri = LOG_INFO;
	296
	297	if (level > log_level)
	298	return;
	299
	300	switch (level) {
	301	case SYSLOG_LEVEL_FATAL:
	302	if (!log_on_stderr)
	303	txt = "fatal";
	304	pri = LOG_CRIT;
	305	break;
	306	case SYSLOG_LEVEL_ERROR:
	307	if (!log_on_stderr)
	308	txt = "error";
	309	pri = LOG_ERR;
	310	break;
	311	case SYSLOG_LEVEL_INFO:
	312	pri = LOG_INFO;
	313	break;
	314	case SYSLOG_LEVEL_VERBOSE:
	315	pri = LOG_INFO;
	316	break;
	317	case SYSLOG_LEVEL_DEBUG1:
	318	txt = "debug1";
	319	pri = LOG_DEBUG;
	320	break;
	321	case SYSLOG_LEVEL_DEBUG2:
	322	txt = "debug2";
	323	pri = LOG_DEBUG;
	324	break;
	325	case SYSLOG_LEVEL_DEBUG3:
	326	txt = "debug3";
	327	pri = LOG_DEBUG;
	328	break;
	329	default:
	330	txt = "internal error";
	331	pri = LOG_ERR;
	332	break;
	333	}
	334	if (txt != NULL) {
	335	snprintf(fmtbuf, sizeof(fmtbuf), "%s: %s", txt, fmt);
	336	vsnprintf(msgbuf, sizeof(msgbuf), fmtbuf, args);
	337	} else {
	338	vsnprintf(msgbuf, sizeof(msgbuf), fmt, args);
	339	}
ac87b3c2	340	strnvis(fmtbuf, msgbuf, sizeof(fmtbuf),
ac87b3c2	341	log_on_stderr ? LOG_STDERR_VIS : LOG_SYSLOG_VIS);
20244695	342	if (log_on_stderr) {
5b0fe364	343	snprintf(msgbuf, sizeof msgbuf, "%s\r\n", fmtbuf);
5b0fe364	344	write(STDERR_FILENO, msgbuf, strlen(msgbuf));
20244695	345	} else {
a90ed4b3	346	#if defined(HAVE_OPENLOG_R) && defined(SYSLOG_DATA_INIT)
c453493f	347	openlog_r(argv0 ? argv0 : __progname, LOG_PID, log_facility, &sdata);
5b0fe364	348	syslog_r(pri, &sdata, "%.500s", fmtbuf);
c453493f	349	closelog_r(&sdata);
c453493f	350	#else
20244695	351	openlog(argv0 ? argv0 : __progname, LOG_PID, log_facility);
63cada0a	352	syslog(pri, "%.500s", fmtbuf);
20244695	353	closelog();
c453493f	354	#endif
20244695	355	}
9d6b7add	356	}