[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 1.20 2002/01/17 04:27:37 stevesk 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 },
#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, (SyslogFacility)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, (LogLevel)0 }
};

static void	 do_log(LogLevel level, const char *fmt, va_list args);

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\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);
	}
}

#define MSGBUFSIZ 1024

static 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"
4267abfd	37	RCSID("$OpenBSD: log.c,v 1.20 2002/01/17 04:27:37 stevesk 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 },
cc3067d6	60	#ifdef LOG_AUTHPRIV
	61	{ "AUTHPRIV", SYSLOG_FACILITY_AUTHPRIV },
	62	#endif
20244695	63	{ "LOCAL0", SYSLOG_FACILITY_LOCAL0 },
	64	{ "LOCAL1", SYSLOG_FACILITY_LOCAL1 },
	65	{ "LOCAL2", SYSLOG_FACILITY_LOCAL2 },
	66	{ "LOCAL3", SYSLOG_FACILITY_LOCAL3 },
	67	{ "LOCAL4", SYSLOG_FACILITY_LOCAL4 },
	68	{ "LOCAL5", SYSLOG_FACILITY_LOCAL5 },
	69	{ "LOCAL6", SYSLOG_FACILITY_LOCAL6 },
	70	{ "LOCAL7", SYSLOG_FACILITY_LOCAL7 },
4267abfd	71	{ NULL, (SyslogFacility)0 }
20244695	72	};
	73
	74	static struct {
	75	const char *name;
	76	LogLevel val;
	77	} log_levels[] =
	78	{
	79	{ "QUIET", SYSLOG_LEVEL_QUIET },
	80	{ "FATAL", SYSLOG_LEVEL_FATAL },
	81	{ "ERROR", SYSLOG_LEVEL_ERROR },
	82	{ "INFO", SYSLOG_LEVEL_INFO },
	83	{ "VERBOSE", SYSLOG_LEVEL_VERBOSE },
	84	{ "DEBUG", SYSLOG_LEVEL_DEBUG1 },
	85	{ "DEBUG1", SYSLOG_LEVEL_DEBUG1 },
	86	{ "DEBUG2", SYSLOG_LEVEL_DEBUG2 },
	87	{ "DEBUG3", SYSLOG_LEVEL_DEBUG3 },
4267abfd	88	{ NULL, (LogLevel)0 }
20244695	89	};
20244695	90
255cabd9	91	static void do_log(LogLevel level, const char *fmt, va_list args);
255cabd9	92
20244695	93	SyslogFacility
	94	log_facility_number(char *name)
	95	{
	96	int i;
	97	if (name != NULL)
	98	for (i = 0; log_facilities[i].name; i++)
	99	if (strcasecmp(log_facilities[i].name, name) == 0)
	100	return log_facilities[i].val;
	101	return (SyslogFacility) - 1;
	102	}
	103
	104	LogLevel
	105	log_level_number(char *name)
	106	{
	107	int i;
	108	if (name != NULL)
	109	for (i = 0; log_levels[i].name; i++)
	110	if (strcasecmp(log_levels[i].name, name) == 0)
	111	return log_levels[i].val;
	112	return (LogLevel) - 1;
	113	}
6a17f9c2	114	/* Fatal messages. This function never returns. */
	115
	116	void
5260325f	117	fatal(const char *fmt,...)
6a17f9c2	118	{
5260325f	119	va_list args;
	120	va_start(args, fmt);
	121	do_log(SYSLOG_LEVEL_FATAL, fmt, args);
	122	va_end(args);
	123	fatal_cleanup();
6a17f9c2	124	}
	125
	126	/* Error messages that should be logged. */
	127
	128	void
5260325f	129	error(const char *fmt,...)
6a17f9c2	130	{
5260325f	131	va_list args;
	132	va_start(args, fmt);
	133	do_log(SYSLOG_LEVEL_ERROR, fmt, args);
	134	va_end(args);
6a17f9c2	135	}
	136
	137	/* Log this message (information that usually should go to the log). */
	138
	139	void
5260325f	140	log(const char *fmt,...)
6a17f9c2	141	{
5260325f	142	va_list args;
5260325f	143	va_start(args, fmt);
59c97189	144	do_log(SYSLOG_LEVEL_INFO, fmt, args);
5260325f	145	va_end(args);
6a17f9c2	146	}
	147
	148	/* More detailed messages (information that does not need to go to the log). */
	149
	150	void
5260325f	151	verbose(const char *fmt,...)
6a17f9c2	152	{
5260325f	153	va_list args;
	154	va_start(args, fmt);
	155	do_log(SYSLOG_LEVEL_VERBOSE, fmt, args);
	156	va_end(args);
6a17f9c2	157	}
	158
	159	/* Debugging messages that should not be logged during normal operation. */
	160
	161	void
5260325f	162	debug(const char *fmt,...)
6a17f9c2	163	{
5260325f	164	va_list args;
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;
	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;
	183	va_start(args, fmt);
	184	do_log(SYSLOG_LEVEL_DEBUG3, fmt, args);
5260325f	185	va_end(args);
6a17f9c2	186	}
	187
	188	/* Fatal cleanup */
	189
5260325f	190	struct fatal_cleanup {
	191	struct fatal_cleanup *next;
	192	void (proc) (void );
	193	void *context;
6a17f9c2	194	};
	195
	196	static struct fatal_cleanup *fatal_cleanups = NULL;
	197
	198	/* Registers a cleanup function to be called by fatal() before exiting. */
	199
	200	void
5260325f	201	fatal_add_cleanup(void (proc) (void ), void *context)
6a17f9c2	202	{
5260325f	203	struct fatal_cleanup *cu;
6a17f9c2	204
5260325f	205	cu = xmalloc(sizeof(*cu));
	206	cu->proc = proc;
	207	cu->context = context;
	208	cu->next = fatal_cleanups;
	209	fatal_cleanups = cu;
6a17f9c2	210	}
	211
	212	/* Removes a cleanup frunction to be called at fatal(). */
	213
	214	void
5260325f	215	fatal_remove_cleanup(void (proc) (void context), void *context)
6a17f9c2	216	{
5260325f	217	struct fatal_cleanup *cup, cu;
	218
	219	for (cup = &fatal_cleanups; *cup; cup = &cu->next) {
	220	cu = *cup;
	221	if (cu->proc == proc && cu->context == context) {
	222	*cup = cu->next;
	223	xfree(cu);
	224	return;
	225	}
6a17f9c2	226	}
20244695	227	fatal("fatal_remove_cleanup: no such cleanup function: 0x%lx 0x%lx",
20244695	228	(u_long) proc, (u_long) context);
6a17f9c2	229	}
	230
	231	/* Cleanup and exit */
	232	void
	233	fatal_cleanup(void)
	234	{
5260325f	235	struct fatal_cleanup cu, next_cu;
	236	static int called = 0;
	237
	238	if (called)
	239	exit(255);
	240	called = 1;
	241	/* Call cleanup functions. */
	242	for (cu = fatal_cleanups; cu; cu = next_cu) {
	243	next_cu = cu->next;
	244	debug("Calling cleanup 0x%lx(0x%lx)",
184eed6a	245	(u_long) cu->proc, (u_long) cu->context);
5260325f	246	(*cu->proc) (cu->context);
	247	}
	248	exit(255);
6a17f9c2	249	}
9d6b7add	250
9d6b7add	251
20244695	252	/*
	253	* Initialize the log.
	254	*/
9d6b7add	255
20244695	256	void
20244695	257	log_init(char *av0, LogLevel level, SyslogFacility facility, int on_stderr)
9d6b7add	258	{
20244695	259	argv0 = av0;
9d6b7add	260
20244695	261	switch (level) {
	262	case SYSLOG_LEVEL_QUIET:
	263	case SYSLOG_LEVEL_FATAL:
	264	case SYSLOG_LEVEL_ERROR:
	265	case SYSLOG_LEVEL_INFO:
	266	case SYSLOG_LEVEL_VERBOSE:
	267	case SYSLOG_LEVEL_DEBUG1:
	268	case SYSLOG_LEVEL_DEBUG2:
	269	case SYSLOG_LEVEL_DEBUG3:
	270	log_level = level;
	271	break;
	272	default:
0be033ea	273	fprintf(stderr, "Unrecognized internal syslog level code %d\n",
20244695	274	(int) level);
	275	exit(1);
	276	}
	277
	278	log_on_stderr = on_stderr;
	279	if (on_stderr)
	280	return;
	281
	282	switch (facility) {
	283	case SYSLOG_FACILITY_DAEMON:
	284	log_facility = LOG_DAEMON;
	285	break;
	286	case SYSLOG_FACILITY_USER:
	287	log_facility = LOG_USER;
	288	break;
	289	case SYSLOG_FACILITY_AUTH:
	290	log_facility = LOG_AUTH;
	291	break;
cc3067d6	292	#ifdef LOG_AUTHPRIV
	293	case SYSLOG_FACILITY_AUTHPRIV:
	294	log_facility = LOG_AUTHPRIV;
	295	break;
20244695	296	#endif
	297	case SYSLOG_FACILITY_LOCAL0:
	298	log_facility = LOG_LOCAL0;
	299	break;
	300	case SYSLOG_FACILITY_LOCAL1:
	301	log_facility = LOG_LOCAL1;
	302	break;
	303	case SYSLOG_FACILITY_LOCAL2:
	304	log_facility = LOG_LOCAL2;
	305	break;
	306	case SYSLOG_FACILITY_LOCAL3:
	307	log_facility = LOG_LOCAL3;
	308	break;
	309	case SYSLOG_FACILITY_LOCAL4:
	310	log_facility = LOG_LOCAL4;
	311	break;
	312	case SYSLOG_FACILITY_LOCAL5:
	313	log_facility = LOG_LOCAL5;
	314	break;
	315	case SYSLOG_FACILITY_LOCAL6:
	316	log_facility = LOG_LOCAL6;
	317	break;
	318	case SYSLOG_FACILITY_LOCAL7:
	319	log_facility = LOG_LOCAL7;
	320	break;
	321	default:
	322	fprintf(stderr,
0be033ea	323	"Unrecognized internal syslog facility code %d\n",
20244695	324	(int) facility);
	325	exit(1);
	326	}
9d6b7add	327	}
9d6b7add	328
20244695	329	#define MSGBUFSIZ 1024
20244695	330
255cabd9	331	static void
20244695	332	do_log(LogLevel level, const char *fmt, va_list args)
9d6b7add	333	{
20244695	334	char msgbuf[MSGBUFSIZ];
	335	char fmtbuf[MSGBUFSIZ];
	336	char *txt = NULL;
	337	int pri = LOG_INFO;
	338
	339	if (level > log_level)
	340	return;
	341
	342	switch (level) {
	343	case SYSLOG_LEVEL_FATAL:
	344	if (!log_on_stderr)
	345	txt = "fatal";
	346	pri = LOG_CRIT;
	347	break;
	348	case SYSLOG_LEVEL_ERROR:
	349	if (!log_on_stderr)
	350	txt = "error";
	351	pri = LOG_ERR;
	352	break;
	353	case SYSLOG_LEVEL_INFO:
	354	pri = LOG_INFO;
	355	break;
	356	case SYSLOG_LEVEL_VERBOSE:
	357	pri = LOG_INFO;
	358	break;
	359	case SYSLOG_LEVEL_DEBUG1:
	360	txt = "debug1";
	361	pri = LOG_DEBUG;
	362	break;
	363	case SYSLOG_LEVEL_DEBUG2:
	364	txt = "debug2";
	365	pri = LOG_DEBUG;
	366	break;
	367	case SYSLOG_LEVEL_DEBUG3:
	368	txt = "debug3";
	369	pri = LOG_DEBUG;
	370	break;
	371	default:
	372	txt = "internal error";
	373	pri = LOG_ERR;
	374	break;
	375	}
	376	if (txt != NULL) {
	377	snprintf(fmtbuf, sizeof(fmtbuf), "%s: %s", txt, fmt);
	378	vsnprintf(msgbuf, sizeof(msgbuf), fmtbuf, args);
	379	} else {
	380	vsnprintf(msgbuf, sizeof(msgbuf), fmt, args);
	381	}
	382	if (log_on_stderr) {
	383	fprintf(stderr, "%s\r\n", msgbuf);
	384	} else {
	385	openlog(argv0 ? argv0 : __progname, LOG_PID, log_facility);
	386	syslog(pri, "%.500s", msgbuf);
	387	closelog();
	388	}
9d6b7add	389	}