[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 1.26 2003/04/08 20:21:28 itojun 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,		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);
}

/* 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);
}

/* Remove all cleanups, to be called after fork() */
void
fatal_remove_all_cleanups(void)
{
	struct fatal_cleanup *cu, *next_cu;

	for (cu = fatal_cleanups; cu; cu = next_cu) {
		next_cu = cu->next;
		xfree(cu);
	}
	fatal_cleanups = NULL;
}

/* 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

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);
	}
	/* Escape magic chars in output. */
	strnvis(fmtbuf, msgbuf, sizeof(fmtbuf), VIS_OCTAL);
	
	if (log_on_stderr) {
		fprintf(stderr, "%s\r\n", fmtbuf);
	} else {
		openlog(argv0 ? argv0 : __progname, LOG_PID, log_facility);
		syslog(pri, "%.500s", fmtbuf);
		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"
0608f8a7	37	RCSID("$OpenBSD: log.c,v 1.26 2003/04/08 20:21:28 itojun 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 },
5eaf8578	71	{ NULL, SYSLOG_FACILITY_NOT_SET }
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 },
5eaf8578	88	{ NULL, SYSLOG_LEVEL_NOT_SET }
20244695	89	};
	90
	91	SyslogFacility
	92	log_facility_number(char *name)
	93	{
	94	int i;
4394a17f	95
20244695	96	if (name != NULL)
	97	for (i = 0; log_facilities[i].name; i++)
	98	if (strcasecmp(log_facilities[i].name, name) == 0)
	99	return log_facilities[i].val;
5eaf8578	100	return SYSLOG_FACILITY_NOT_SET;
20244695	101	}
	102
	103	LogLevel
	104	log_level_number(char *name)
	105	{
	106	int i;
4394a17f	107
20244695	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;
5eaf8578	112	return SYSLOG_LEVEL_NOT_SET;
20244695	113	}
6a17f9c2	114
	115	/* Error messages that should be logged. */
	116
	117	void
5260325f	118	error(const char *fmt,...)
6a17f9c2	119	{
5260325f	120	va_list args;
4394a17f	121
5260325f	122	va_start(args, fmt);
	123	do_log(SYSLOG_LEVEL_ERROR, fmt, args);
	124	va_end(args);
6a17f9c2	125	}
	126
	127	/* Log this message (information that usually should go to the log). */
	128
	129	void
bbe88b6d	130	logit(const char *fmt,...)
6a17f9c2	131	{
5260325f	132	va_list args;
4394a17f	133
5260325f	134	va_start(args, fmt);
59c97189	135	do_log(SYSLOG_LEVEL_INFO, fmt, args);
5260325f	136	va_end(args);
6a17f9c2	137	}
	138
	139	/* More detailed messages (information that does not need to go to the log). */
	140
	141	void
5260325f	142	verbose(const char *fmt,...)
6a17f9c2	143	{
5260325f	144	va_list args;
4394a17f	145
5260325f	146	va_start(args, fmt);
	147	do_log(SYSLOG_LEVEL_VERBOSE, fmt, args);
	148	va_end(args);
6a17f9c2	149	}
	150
	151	/* Debugging messages that should not be logged during normal operation. */
	152
	153	void
5260325f	154	debug(const char *fmt,...)
6a17f9c2	155	{
5260325f	156	va_list args;
4394a17f	157
5260325f	158	va_start(args, fmt);
bcbf86ec	159	do_log(SYSLOG_LEVEL_DEBUG1, fmt, args);
	160	va_end(args);
	161	}
	162
	163	void
	164	debug2(const char *fmt,...)
	165	{
	166	va_list args;
4394a17f	167
bcbf86ec	168	va_start(args, fmt);
	169	do_log(SYSLOG_LEVEL_DEBUG2, fmt, args);
	170	va_end(args);
	171	}
	172
	173	void
	174	debug3(const char *fmt,...)
	175	{
	176	va_list args;
4394a17f	177
bcbf86ec	178	va_start(args, fmt);
bcbf86ec	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	}
6a17f9c2	225
516f0d7d	226	/* Remove all cleanups, to be called after fork() */
	227	void
	228	fatal_remove_all_cleanups(void)
	229	{
	230	struct fatal_cleanup cu, next_cu;
	231
	232	for (cu = fatal_cleanups; cu; cu = next_cu) {
	233	next_cu = cu->next;
	234	xfree(cu);
	235	}
083d2e97	236	fatal_cleanups = NULL;
516f0d7d	237	}
516f0d7d	238
6a17f9c2	239	/* Cleanup and exit */
	240	void
	241	fatal_cleanup(void)
	242	{
5260325f	243	struct fatal_cleanup cu, next_cu;
	244	static int called = 0;
	245
	246	if (called)
	247	exit(255);
	248	called = 1;
	249	/* Call cleanup functions. */
	250	for (cu = fatal_cleanups; cu; cu = next_cu) {
	251	next_cu = cu->next;
	252	debug("Calling cleanup 0x%lx(0x%lx)",
184eed6a	253	(u_long) cu->proc, (u_long) cu->context);
5260325f	254	(*cu->proc) (cu->context);
	255	}
	256	exit(255);
6a17f9c2	257	}
9d6b7add	258
9d6b7add	259
20244695	260	/*
	261	* Initialize the log.
	262	*/
9d6b7add	263
20244695	264	void
20244695	265	log_init(char *av0, LogLevel level, SyslogFacility facility, int on_stderr)
9d6b7add	266	{
20244695	267	argv0 = av0;
9d6b7add	268
20244695	269	switch (level) {
	270	case SYSLOG_LEVEL_QUIET:
	271	case SYSLOG_LEVEL_FATAL:
	272	case SYSLOG_LEVEL_ERROR:
	273	case SYSLOG_LEVEL_INFO:
	274	case SYSLOG_LEVEL_VERBOSE:
	275	case SYSLOG_LEVEL_DEBUG1:
	276	case SYSLOG_LEVEL_DEBUG2:
	277	case SYSLOG_LEVEL_DEBUG3:
	278	log_level = level;
	279	break;
	280	default:
0be033ea	281	fprintf(stderr, "Unrecognized internal syslog level code %d\n",
20244695	282	(int) level);
	283	exit(1);
	284	}
	285
	286	log_on_stderr = on_stderr;
	287	if (on_stderr)
	288	return;
	289
	290	switch (facility) {
	291	case SYSLOG_FACILITY_DAEMON:
	292	log_facility = LOG_DAEMON;
	293	break;
	294	case SYSLOG_FACILITY_USER:
	295	log_facility = LOG_USER;
	296	break;
	297	case SYSLOG_FACILITY_AUTH:
	298	log_facility = LOG_AUTH;
	299	break;
cc3067d6	300	#ifdef LOG_AUTHPRIV
	301	case SYSLOG_FACILITY_AUTHPRIV:
	302	log_facility = LOG_AUTHPRIV;
	303	break;
20244695	304	#endif
	305	case SYSLOG_FACILITY_LOCAL0:
	306	log_facility = LOG_LOCAL0;
	307	break;
	308	case SYSLOG_FACILITY_LOCAL1:
	309	log_facility = LOG_LOCAL1;
	310	break;
	311	case SYSLOG_FACILITY_LOCAL2:
	312	log_facility = LOG_LOCAL2;
	313	break;
	314	case SYSLOG_FACILITY_LOCAL3:
	315	log_facility = LOG_LOCAL3;
	316	break;
	317	case SYSLOG_FACILITY_LOCAL4:
	318	log_facility = LOG_LOCAL4;
	319	break;
	320	case SYSLOG_FACILITY_LOCAL5:
	321	log_facility = LOG_LOCAL5;
	322	break;
	323	case SYSLOG_FACILITY_LOCAL6:
	324	log_facility = LOG_LOCAL6;
	325	break;
	326	case SYSLOG_FACILITY_LOCAL7:
	327	log_facility = LOG_LOCAL7;
	328	break;
	329	default:
	330	fprintf(stderr,
0be033ea	331	"Unrecognized internal syslog facility code %d\n",
20244695	332	(int) facility);
	333	exit(1);
	334	}
9d6b7add	335	}
9d6b7add	336
20244695	337	#define MSGBUFSIZ 1024
20244695	338
2bae80e9	339	void
20244695	340	do_log(LogLevel level, const char *fmt, va_list args)
9d6b7add	341	{
20244695	342	char msgbuf[MSGBUFSIZ];
	343	char fmtbuf[MSGBUFSIZ];
	344	char *txt = NULL;
	345	int pri = LOG_INFO;
	346
	347	if (level > log_level)
	348	return;
	349
	350	switch (level) {
	351	case SYSLOG_LEVEL_FATAL:
	352	if (!log_on_stderr)
	353	txt = "fatal";
	354	pri = LOG_CRIT;
	355	break;
	356	case SYSLOG_LEVEL_ERROR:
	357	if (!log_on_stderr)
	358	txt = "error";
	359	pri = LOG_ERR;
	360	break;
	361	case SYSLOG_LEVEL_INFO:
	362	pri = LOG_INFO;
	363	break;
	364	case SYSLOG_LEVEL_VERBOSE:
	365	pri = LOG_INFO;
	366	break;
	367	case SYSLOG_LEVEL_DEBUG1:
	368	txt = "debug1";
	369	pri = LOG_DEBUG;
	370	break;
	371	case SYSLOG_LEVEL_DEBUG2:
	372	txt = "debug2";
	373	pri = LOG_DEBUG;
	374	break;
	375	case SYSLOG_LEVEL_DEBUG3:
	376	txt = "debug3";
	377	pri = LOG_DEBUG;
	378	break;
	379	default:
	380	txt = "internal error";
	381	pri = LOG_ERR;
	382	break;
	383	}
	384	if (txt != NULL) {
	385	snprintf(fmtbuf, sizeof(fmtbuf), "%s: %s", txt, fmt);
	386	vsnprintf(msgbuf, sizeof(msgbuf), fmtbuf, args);
	387	} else {
	388	vsnprintf(msgbuf, sizeof(msgbuf), fmt, args);
	389	}
63cada0a	390	/* Escape magic chars in output. */
	391	strnvis(fmtbuf, msgbuf, sizeof(fmtbuf), VIS_OCTAL);
	392
20244695	393	if (log_on_stderr) {
63cada0a	394	fprintf(stderr, "%s\r\n", fmtbuf);
20244695	395	} else {
20244695	396	openlog(argv0 ? argv0 : __progname, LOG_PID, log_facility);
63cada0a	397	syslog(pri, "%.500s", fmtbuf);
20244695	398	closelog();
20244695	399	}
9d6b7add	400	}