[openssh.git] / log.c

/*
 * 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"
RCSID("$OpenBSD: log.c,v 1.17 2001/03/04 17:42:28 millert Exp $");

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

#include <syslog.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;

/* 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 },
	{ "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, 0 }
};

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, 0 }
};

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 (SyslogFacility) - 1;
}

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 (LogLevel) - 1;
}
/* Fatal messages.  This function never returns. */

void
fatal(const char *fmt,...)
{
	va_list args;
	va_start(args, fmt);
	do_log(SYSLOG_LEVEL_FATAL, fmt, args);
	va_end(args);
	fatal_cleanup();
}

/* 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
log(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);
}

/* Fatal cleanup */

struct fatal_cleanup {
	struct fatal_cleanup *next;
	void (*proc) (void *);
	void *context;
};

static struct fatal_cleanup *fatal_cleanups = NULL;

/* Registers a cleanup function to be called by fatal() before exiting. */

void
fatal_add_cleanup(void (*proc) (void *), void *context)
{
	struct fatal_cleanup *cu;

	cu = xmalloc(sizeof(*cu));
	cu->proc = proc;
	cu->context = context;
	cu->next = fatal_cleanups;
	fatal_cleanups = cu;
}

/* Removes a cleanup frunction to be called at fatal(). */

void
fatal_remove_cleanup(void (*proc) (void *context), void *context)
{
	struct fatal_cleanup **cup, *cu;

	for (cup = &fatal_cleanups; *cup; cup = &cu->next) {
		cu = *cup;
		if (cu->proc == proc && cu->context == context) {
			*cup = cu->next;
			xfree(cu);
			return;
		}
	}
	fatal("fatal_remove_cleanup: no such cleanup function: 0x%lx 0x%lx",
	    (u_long) proc, (u_long) context);
}

/* Cleanup and exit */
void
fatal_cleanup(void)
{
	struct fatal_cleanup *cu, *next_cu;
	static int called = 0;

	if (called)
		exit(255);
	called = 1;
	/* Call cleanup functions. */
	for (cu = fatal_cleanups; cu; cu = next_cu) {
		next_cu = cu->next;
		debug("Calling cleanup 0x%lx(0x%lx)",
		      (u_long) cu->proc, (u_long) cu->context);
		(*cu->proc) (cu->context);
	}
	exit(255);
}


/*
 * Initialize the log.
 */

void
log_init(char *av0, LogLevel level, SyslogFacility facility, int on_stderr)
{
	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",
		    (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;
#if 0			/* This is broken. =) - BAL */
#ifdef LOG_AUTHPRIV		/** BAL: Verify */
	case SYSLOG_FACILITY_AUTHPRIV
		log_facility = AUTHPRIV;
		break
#endif
#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",
		    (int) facility);
		exit(1);
	}
}

#define MSGBUFSIZ 1024

void
do_log(LogLevel level, const char *fmt, va_list args)
{
	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);
	}
	if (log_on_stderr) {
		fprintf(stderr, "%s\r\n", msgbuf);
	} else {
		openlog(argv0 ? argv0 : __progname, LOG_PID, log_facility);
		syslog(pri, "%.500s", msgbuf);
		closelog();
	}
}
Commit	Line	Data
bcbf86ec	1	/*
	2	* Author: Tatu Ylonen <ylo@cs.hut.fi>
	3	* Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
	4	* All rights reserved
	5	*
	6	* As far as I am concerned, the code I have written for this software
	7	* can be used freely for any purpose. Any derived versions of this
	8	* software must be clearly marked as such, and if the derived work is
	9	* incompatible with the protocol description in the RFC file, it must be
	10	* called by a name other than "ssh" or "Secure Shell".
	11	*/
6a17f9c2	12	/*
bcbf86ec	13	* Copyright (c) 2000 Markus Friedl. All rights reserved.
	14	*
	15	* Redistribution and use in source and binary forms, with or without
	16	* modification, are permitted provided that the following conditions
	17	* are met:
	18	* 1. Redistributions of source code must retain the above copyright
	19	* notice, this list of conditions and the following disclaimer.
	20	* 2. Redistributions in binary form must reproduce the above copyright
	21	* notice, this list of conditions and the following disclaimer in the
	22	* documentation and/or other materials provided with the distribution.
	23	*
	24	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
	25	* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
	26	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
	27	* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
	28	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
	29	* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
	30	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
	31	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
	32	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
	33	* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
aa3378df	34	*/
6a17f9c2	35
6a17f9c2	36	#include "includes.h"
325a7d5d	37	RCSID("$OpenBSD: log.c,v 1.17 2001/03/04 17:42:28 millert Exp $");
6a17f9c2	38
42f11eb2	39	#include "log.h"
6a17f9c2	40	#include "xmalloc.h"
6a17f9c2	41
20244695	42	#include <syslog.h>
	43
	44	static LogLevel log_level = SYSLOG_LEVEL_INFO;
	45	static int log_on_stderr = 1;
	46	static int log_facility = LOG_AUTH;
	47	static char *argv0;
	48
	49	extern char *__progname;
	50
	51	/* textual representation of log-facilities/levels */
	52
	53	static struct {
	54	const char *name;
	55	SyslogFacility val;
	56	} log_facilities[] = {
	57	{ "DAEMON", SYSLOG_FACILITY_DAEMON },
	58	{ "USER", SYSLOG_FACILITY_USER },
	59	{ "AUTH", SYSLOG_FACILITY_AUTH },
	60	{ "LOCAL0", SYSLOG_FACILITY_LOCAL0 },
	61	{ "LOCAL1", SYSLOG_FACILITY_LOCAL1 },
	62	{ "LOCAL2", SYSLOG_FACILITY_LOCAL2 },
	63	{ "LOCAL3", SYSLOG_FACILITY_LOCAL3 },
	64	{ "LOCAL4", SYSLOG_FACILITY_LOCAL4 },
	65	{ "LOCAL5", SYSLOG_FACILITY_LOCAL5 },
	66	{ "LOCAL6", SYSLOG_FACILITY_LOCAL6 },
	67	{ "LOCAL7", SYSLOG_FACILITY_LOCAL7 },
	68	{ NULL, 0 }
	69	};
	70
	71	static struct {
	72	const char *name;
	73	LogLevel val;
	74	} log_levels[] =
	75	{
	76	{ "QUIET", SYSLOG_LEVEL_QUIET },
	77	{ "FATAL", SYSLOG_LEVEL_FATAL },
	78	{ "ERROR", SYSLOG_LEVEL_ERROR },
	79	{ "INFO", SYSLOG_LEVEL_INFO },
	80	{ "VERBOSE", SYSLOG_LEVEL_VERBOSE },
	81	{ "DEBUG", SYSLOG_LEVEL_DEBUG1 },
	82	{ "DEBUG1", SYSLOG_LEVEL_DEBUG1 },
	83	{ "DEBUG2", SYSLOG_LEVEL_DEBUG2 },
	84	{ "DEBUG3", SYSLOG_LEVEL_DEBUG3 },
	85	{ NULL, 0 }
	86	};
	87
	88	SyslogFacility
	89	log_facility_number(char *name)
	90	{
	91	int i;
	92	if (name != NULL)
	93	for (i = 0; log_facilities[i].name; i++)
	94	if (strcasecmp(log_facilities[i].name, name) == 0)
	95	return log_facilities[i].val;
	96	return (SyslogFacility) - 1;
	97	}
	98
	99	LogLevel
	100	log_level_number(char *name)
	101	{
	102	int i;
	103	if (name != NULL)
	104	for (i = 0; log_levels[i].name; i++)
	105	if (strcasecmp(log_levels[i].name, name) == 0)
106	return log_levels[i].val;
107	return (LogLevel) - 1;
108	}
6a17f9c2	109	/* Fatal messages. This function never returns. */
	110
	111	void
5260325f	112	fatal(const char *fmt,...)
6a17f9c2	113	{
5260325f	114	va_list args;
	115	va_start(args, fmt);
	116	do_log(SYSLOG_LEVEL_FATAL, fmt, args);
	117	va_end(args);
	118	fatal_cleanup();
6a17f9c2	119	}
	120
	121	/* Error messages that should be logged. */
	122
	123	void
5260325f	124	error(const char *fmt,...)
6a17f9c2	125	{
5260325f	126	va_list args;
	127	va_start(args, fmt);
	128	do_log(SYSLOG_LEVEL_ERROR, fmt, args);
	129	va_end(args);
6a17f9c2	130	}
	131
	132	/* Log this message (information that usually should go to the log). */
	133
	134	void
5260325f	135	log(const char *fmt,...)
6a17f9c2	136	{
5260325f	137	va_list args;
5260325f	138	va_start(args, fmt);
59c97189	139	do_log(SYSLOG_LEVEL_INFO, fmt, args);
5260325f	140	va_end(args);
6a17f9c2	141	}
	142
	143	/* More detailed messages (information that does not need to go to the log). */
	144
	145	void
5260325f	146	verbose(const char *fmt,...)
6a17f9c2	147	{
5260325f	148	va_list args;
	149	va_start(args, fmt);
	150	do_log(SYSLOG_LEVEL_VERBOSE, fmt, args);
	151	va_end(args);
6a17f9c2	152	}
	153
	154	/* Debugging messages that should not be logged during normal operation. */
	155
	156	void
5260325f	157	debug(const char *fmt,...)
6a17f9c2	158	{
5260325f	159	va_list args;
5260325f	160	va_start(args, fmt);
bcbf86ec	161	do_log(SYSLOG_LEVEL_DEBUG1, fmt, args);
	162	va_end(args);
	163	}
	164
	165	void
	166	debug2(const char *fmt,...)
	167	{
	168	va_list args;
	169	va_start(args, fmt);
	170	do_log(SYSLOG_LEVEL_DEBUG2, fmt, args);
	171	va_end(args);
	172	}
	173
	174	void
	175	debug3(const char *fmt,...)
	176	{
	177	va_list args;
	178	va_start(args, fmt);
	179	do_log(SYSLOG_LEVEL_DEBUG3, fmt, args);
5260325f	180	va_end(args);
6a17f9c2	181	}
	182
	183	/* Fatal cleanup */
	184
5260325f	185	struct fatal_cleanup {
	186	struct fatal_cleanup *next;
	187	void (proc) (void );
	188	void *context;
6a17f9c2	189	};
	190
	191	static struct fatal_cleanup *fatal_cleanups = NULL;
	192
	193	/* Registers a cleanup function to be called by fatal() before exiting. */
	194
	195	void
5260325f	196	fatal_add_cleanup(void (proc) (void ), void *context)
6a17f9c2	197	{
5260325f	198	struct fatal_cleanup *cu;
6a17f9c2	199
5260325f	200	cu = xmalloc(sizeof(*cu));
	201	cu->proc = proc;
	202	cu->context = context;
	203	cu->next = fatal_cleanups;
	204	fatal_cleanups = cu;
6a17f9c2	205	}
	206
	207	/* Removes a cleanup frunction to be called at fatal(). */
	208
	209	void
5260325f	210	fatal_remove_cleanup(void (proc) (void context), void *context)
6a17f9c2	211	{
5260325f	212	struct fatal_cleanup *cup, cu;
	213
	214	for (cup = &fatal_cleanups; *cup; cup = &cu->next) {
	215	cu = *cup;
	216	if (cu->proc == proc && cu->context == context) {
	217	*cup = cu->next;
	218	xfree(cu);
	219	return;
	220	}
6a17f9c2	221	}
20244695	222	fatal("fatal_remove_cleanup: no such cleanup function: 0x%lx 0x%lx",
20244695	223	(u_long) proc, (u_long) context);
6a17f9c2	224	}
	225
	226	/* Cleanup and exit */
	227	void
	228	fatal_cleanup(void)
	229	{
5260325f	230	struct fatal_cleanup cu, next_cu;
	231	static int called = 0;
	232
	233	if (called)
	234	exit(255);
	235	called = 1;
	236	/* Call cleanup functions. */
	237	for (cu = fatal_cleanups; cu; cu = next_cu) {
	238	next_cu = cu->next;
	239	debug("Calling cleanup 0x%lx(0x%lx)",
1e3b8b07	240	(u_long) cu->proc, (u_long) cu->context);
5260325f	241	(*cu->proc) (cu->context);
	242	}
	243	exit(255);
6a17f9c2	244	}
9d6b7add	245
9d6b7add	246
20244695	247	/*
	248	* Initialize the log.
	249	*/
9d6b7add	250
20244695	251	void
20244695	252	log_init(char *av0, LogLevel level, SyslogFacility facility, int on_stderr)
9d6b7add	253	{
20244695	254	argv0 = av0;
9d6b7add	255
20244695	256	switch (level) {
	257	case SYSLOG_LEVEL_QUIET:
	258	case SYSLOG_LEVEL_FATAL:
	259	case SYSLOG_LEVEL_ERROR:
	260	case SYSLOG_LEVEL_INFO:
	261	case SYSLOG_LEVEL_VERBOSE:
	262	case SYSLOG_LEVEL_DEBUG1:
	263	case SYSLOG_LEVEL_DEBUG2:
	264	case SYSLOG_LEVEL_DEBUG3:
	265	log_level = level;
	266	break;
	267	default:
54b974dc	268	fprintf(stderr, "Unrecognized internal syslog level code %d",
20244695	269	(int) level);
	270	exit(1);
	271	}
	272
	273	log_on_stderr = on_stderr;
	274	if (on_stderr)
	275	return;
	276
	277	switch (facility) {
	278	case SYSLOG_FACILITY_DAEMON:
	279	log_facility = LOG_DAEMON;
	280	break;
	281	case SYSLOG_FACILITY_USER:
	282	log_facility = LOG_USER;
	283	break;
	284	case SYSLOG_FACILITY_AUTH:
	285	log_facility = LOG_AUTH;
	286	break;
9841dbea	287	#if 0 /* This is broken. =) - BAL */
20244695	288	#ifdef LOG_AUTHPRIV /** BAL: Verify */
	289	case SYSLOG_FACILITY_AUTHPRIV
	290	log_facility = AUTHPRIV;
	291	break
9841dbea	292	#endif
20244695	293	#endif
	294	case SYSLOG_FACILITY_LOCAL0:
	295	log_facility = LOG_LOCAL0;
	296	break;
	297	case SYSLOG_FACILITY_LOCAL1:
	298	log_facility = LOG_LOCAL1;
	299	break;
	300	case SYSLOG_FACILITY_LOCAL2:
	301	log_facility = LOG_LOCAL2;
	302	break;
	303	case SYSLOG_FACILITY_LOCAL3:
	304	log_facility = LOG_LOCAL3;
	305	break;
	306	case SYSLOG_FACILITY_LOCAL4:
	307	log_facility = LOG_LOCAL4;
	308	break;
	309	case SYSLOG_FACILITY_LOCAL5:
	310	log_facility = LOG_LOCAL5;
	311	break;
	312	case SYSLOG_FACILITY_LOCAL6:
	313	log_facility = LOG_LOCAL6;
	314	break;
	315	case SYSLOG_FACILITY_LOCAL7:
	316	log_facility = LOG_LOCAL7;
	317	break;
	318	default:
	319	fprintf(stderr,
54b974dc	320	"Unrecognized internal syslog facility code %d",
20244695	321	(int) facility);
	322	exit(1);
	323	}
9d6b7add	324	}
9d6b7add	325
20244695	326	#define MSGBUFSIZ 1024
	327
	328	void
	329	do_log(LogLevel level, const char *fmt, va_list args)
9d6b7add	330	{
20244695	331	char msgbuf[MSGBUFSIZ];
	332	char fmtbuf[MSGBUFSIZ];
	333	char *txt = NULL;
	334	int pri = LOG_INFO;
	335
	336	if (level > log_level)
	337	return;
	338
	339	switch (level) {
	340	case SYSLOG_LEVEL_FATAL:
	341	if (!log_on_stderr)
	342	txt = "fatal";
	343	pri = LOG_CRIT;
	344	break;
	345	case SYSLOG_LEVEL_ERROR:
	346	if (!log_on_stderr)
	347	txt = "error";
	348	pri = LOG_ERR;
	349	break;
	350	case SYSLOG_LEVEL_INFO:
	351	pri = LOG_INFO;
	352	break;
	353	case SYSLOG_LEVEL_VERBOSE:
	354	pri = LOG_INFO;
	355	break;
	356	case SYSLOG_LEVEL_DEBUG1:
	357	txt = "debug1";
	358	pri = LOG_DEBUG;
	359	break;
	360	case SYSLOG_LEVEL_DEBUG2:
	361	txt = "debug2";
	362	pri = LOG_DEBUG;
	363	break;
	364	case SYSLOG_LEVEL_DEBUG3:
	365	txt = "debug3";
	366	pri = LOG_DEBUG;
	367	break;
	368	default:
	369	txt = "internal error";
	370	pri = LOG_ERR;
	371	break;
	372	}
	373	if (txt != NULL) {
	374	snprintf(fmtbuf, sizeof(fmtbuf), "%s: %s", txt, fmt);
	375	vsnprintf(msgbuf, sizeof(msgbuf), fmtbuf, args);
	376	} else {
	377	vsnprintf(msgbuf, sizeof(msgbuf), fmt, args);
	378	}
	379	if (log_on_stderr) {
	380	fprintf(stderr, "%s\r\n", msgbuf);
	381	} else {
	382	openlog(argv0 ? argv0 : __progname, LOG_PID, log_facility);
	383	syslog(pri, "%.500s", msgbuf);
	384	closelog();
	385	}
9d6b7add	386	}