[gssapi-openssh.git] / openssh / 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 1.24 2002/07/19 15:43:33 markus 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
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);
}

/* 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);
	}
}

/* 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);
	}
	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
3c0ef626	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	*/
	12	/*
	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.
	34	*/
	35
	36	#include "includes.h"
41b2f314	37	RCSID("$OpenBSD: log.c,v 1.24 2002/07/19 15:43:33 markus Exp $");
3c0ef626	38
	39	#include "log.h"
	40	#include "xmalloc.h"
	41
	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	#ifdef LOG_AUTHPRIV
	61	{ "AUTHPRIV", SYSLOG_FACILITY_AUTHPRIV },
	62	#endif
	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 },
e9a17296	71	{ NULL, SYSLOG_FACILITY_NOT_SET }
3c0ef626	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 },
e9a17296	88	{ NULL, SYSLOG_LEVEL_NOT_SET }
3c0ef626	89	};
3c0ef626	90
3c0ef626	91	SyslogFacility
	92	log_facility_number(char *name)
	93	{
	94	int i;
41b2f314	95
3c0ef626	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;
e9a17296	100	return SYSLOG_FACILITY_NOT_SET;
3c0ef626	101	}
	102
	103	LogLevel
	104	log_level_number(char *name)
	105	{
	106	int i;
41b2f314	107
3c0ef626	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;
e9a17296	112	return SYSLOG_LEVEL_NOT_SET;
3c0ef626	113	}
	114
	115	/* Error messages that should be logged. */
	116
	117	void
	118	error(const char *fmt,...)
	119	{
	120	va_list args;
41b2f314	121
3c0ef626	122	va_start(args, fmt);
	123	do_log(SYSLOG_LEVEL_ERROR, fmt, args);
	124	va_end(args);
	125	}
	126
	127	/* Log this message (information that usually should go to the log). */
	128
	129	void
	130	log(const char *fmt,...)
	131	{
	132	va_list args;
41b2f314	133
3c0ef626	134	va_start(args, fmt);
	135	do_log(SYSLOG_LEVEL_INFO, fmt, args);
	136	va_end(args);
	137	}
	138
	139	/* More detailed messages (information that does not need to go to the log). */
	140
	141	void
	142	verbose(const char *fmt,...)
	143	{
	144	va_list args;
41b2f314	145
3c0ef626	146	va_start(args, fmt);
	147	do_log(SYSLOG_LEVEL_VERBOSE, fmt, args);
	148	va_end(args);
	149	}
	150
	151	/* Debugging messages that should not be logged during normal operation. */
	152
	153	void
	154	debug(const char *fmt,...)
	155	{
	156	va_list args;
41b2f314	157
3c0ef626	158	va_start(args, fmt);
	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;
41b2f314	167
3c0ef626	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;
41b2f314	177
3c0ef626	178	va_start(args, fmt);
	179	do_log(SYSLOG_LEVEL_DEBUG3, fmt, args);
	180	va_end(args);
	181	}
	182
	183	/* Fatal cleanup */
	184
	185	struct fatal_cleanup {
	186	struct fatal_cleanup *next;
	187	void (proc) (void );
	188	void *context;
	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
	196	fatal_add_cleanup(void (proc) (void ), void *context)
	197	{
	198	struct fatal_cleanup *cu;
	199
	200	cu = xmalloc(sizeof(*cu));
	201	cu->proc = proc;
	202	cu->context = context;
	203	cu->next = fatal_cleanups;
	204	fatal_cleanups = cu;
	205	}
	206
	207	/* Removes a cleanup frunction to be called at fatal(). */
	208
	209	void
	210	fatal_remove_cleanup(void (proc) (void context), void *context)
	211	{
	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	}
	221	}
	222	fatal("fatal_remove_cleanup: no such cleanup function: 0x%lx 0x%lx",
	223	(u_long) proc, (u_long) context);
	224	}
	225
41b2f314	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	}
	236	}
	237
3c0ef626	238	/* Cleanup and exit */
	239	void
	240	fatal_cleanup(void)
	241	{
	242	struct fatal_cleanup cu, next_cu;
	243	static int called = 0;
	244
	245	if (called)
	246	exit(255);
	247	called = 1;
	248	/* Call cleanup functions. */
	249	for (cu = fatal_cleanups; cu; cu = next_cu) {
	250	next_cu = cu->next;
	251	debug("Calling cleanup 0x%lx(0x%lx)",
e9a17296	252	(u_long) cu->proc, (u_long) cu->context);
3c0ef626	253	(*cu->proc) (cu->context);
	254	}
	255	exit(255);
	256	}
	257
	258
	259	/*
	260	* Initialize the log.
	261	*/
	262
	263	void
	264	log_init(char *av0, LogLevel level, SyslogFacility facility, int on_stderr)
	265	{
	266	argv0 = av0;
	267
	268	switch (level) {
	269	case SYSLOG_LEVEL_QUIET:
	270	case SYSLOG_LEVEL_FATAL:
	271	case SYSLOG_LEVEL_ERROR:
	272	case SYSLOG_LEVEL_INFO:
	273	case SYSLOG_LEVEL_VERBOSE:
	274	case SYSLOG_LEVEL_DEBUG1:
	275	case SYSLOG_LEVEL_DEBUG2:
	276	case SYSLOG_LEVEL_DEBUG3:
	277	log_level = level;
	278	break;
	279	default:
	280	fprintf(stderr, "Unrecognized internal syslog level code %d\n",
	281	(int) level);
	282	exit(1);
	283	}
	284
	285	log_on_stderr = on_stderr;
	286	if (on_stderr)
	287	return;
	288
	289	switch (facility) {
	290	case SYSLOG_FACILITY_DAEMON:
	291	log_facility = LOG_DAEMON;
	292	break;
	293	case SYSLOG_FACILITY_USER:
	294	log_facility = LOG_USER;
	295	break;
	296	case SYSLOG_FACILITY_AUTH:
	297	log_facility = LOG_AUTH;
	298	break;
	299	#ifdef LOG_AUTHPRIV
	300	case SYSLOG_FACILITY_AUTHPRIV:
	301	log_facility = LOG_AUTHPRIV;
	302	break;
	303	#endif
	304	case SYSLOG_FACILITY_LOCAL0:
	305	log_facility = LOG_LOCAL0;
	306	break;
	307	case SYSLOG_FACILITY_LOCAL1:
	308	log_facility = LOG_LOCAL1;
	309	break;
	310	case SYSLOG_FACILITY_LOCAL2:
	311	log_facility = LOG_LOCAL2;
	312	break;
	313	case SYSLOG_FACILITY_LOCAL3:
	314	log_facility = LOG_LOCAL3;
	315	break;
	316	case SYSLOG_FACILITY_LOCAL4:
317	log_facility = LOG_LOCAL4;
318	break;
319	case SYSLOG_FACILITY_LOCAL5:
320	log_facility = LOG_LOCAL5;
321	break;
322	case SYSLOG_FACILITY_LOCAL6:
323	log_facility = LOG_LOCAL6;
324	break;
325	case SYSLOG_FACILITY_LOCAL7:
326	log_facility = LOG_LOCAL7;
327	break;
328	default:
329	fprintf(stderr,
330	"Unrecognized internal syslog facility code %d\n",
331	(int) facility);
332	exit(1);
333	}
334	}
335
336	#define MSGBUFSIZ 1024
337
e9a17296	338	void
3c0ef626	339	do_log(LogLevel level, const char *fmt, va_list args)
	340	{
	341	char msgbuf[MSGBUFSIZ];
	342	char fmtbuf[MSGBUFSIZ];
	343	char *txt = NULL;
	344	int pri = LOG_INFO;
	345
	346	if (level > log_level)
	347	return;
	348
	349	switch (level) {
	350	case SYSLOG_LEVEL_FATAL:
	351	if (!log_on_stderr)
	352	txt = "fatal";
	353	pri = LOG_CRIT;
	354	break;
	355	case SYSLOG_LEVEL_ERROR:
	356	if (!log_on_stderr)
	357	txt = "error";
	358	pri = LOG_ERR;
	359	break;
	360	case SYSLOG_LEVEL_INFO:
	361	pri = LOG_INFO;
	362	break;
	363	case SYSLOG_LEVEL_VERBOSE:
	364	pri = LOG_INFO;
	365	break;
	366	case SYSLOG_LEVEL_DEBUG1:
	367	txt = "debug1";
	368	pri = LOG_DEBUG;
	369	break;
	370	case SYSLOG_LEVEL_DEBUG2:
	371	txt = "debug2";
	372	pri = LOG_DEBUG;
	373	break;
	374	case SYSLOG_LEVEL_DEBUG3:
	375	txt = "debug3";
	376	pri = LOG_DEBUG;
	377	break;
	378	default:
	379	txt = "internal error";
	380	pri = LOG_ERR;
	381	break;
	382	}
	383	if (txt != NULL) {
	384	snprintf(fmtbuf, sizeof(fmtbuf), "%s: %s", txt, fmt);
	385	vsnprintf(msgbuf, sizeof(msgbuf), fmtbuf, args);
	386	} else {
	387	vsnprintf(msgbuf, sizeof(msgbuf), fmt, args);
	388	}
	389	if (log_on_stderr) {
	390	fprintf(stderr, "%s\r\n", msgbuf);
	391	} else {
	392	openlog(argv0 ? argv0 : __progname, LOG_PID, log_facility);
	393	syslog(pri, "%.500s", msgbuf);
	394	closelog();
	395	}
	396	}