[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"

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

#include <syslog.h>
#if defined(HAVE_STRNVIS) && defined(HAVE_VIS_H)
# include <vis.h>
#endif

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
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"
6a17f9c2	37
42f11eb2	38	#include "log.h"
6a17f9c2	39	#include "xmalloc.h"
6a17f9c2	40
20244695	41	#include <syslog.h>
0a23d79f	42	#if defined(HAVE_STRNVIS) && defined(HAVE_VIS_H)
	43	# include <vis.h>
	44	#endif
20244695	45
	46	static LogLevel log_level = SYSLOG_LEVEL_INFO;
	47	static int log_on_stderr = 1;
	48	static int log_facility = LOG_AUTH;
	49	static char *argv0;
	50
	51	extern char *__progname;
	52
ac87b3c2	53	#define LOG_SYSLOG_VIS (VIS_CSTYLE\|VIS_NL\|VIS_TAB\|VIS_OCTAL)
	54	#define LOG_STDERR_VIS (VIS_SAFE\|VIS_OCTAL)
	55
20244695	56	/* textual representation of log-facilities/levels */
	57
	58	static struct {
	59	const char *name;
	60	SyslogFacility val;
	61	} log_facilities[] = {
	62	{ "DAEMON", SYSLOG_FACILITY_DAEMON },
	63	{ "USER", SYSLOG_FACILITY_USER },
	64	{ "AUTH", SYSLOG_FACILITY_AUTH },
cc3067d6	65	#ifdef LOG_AUTHPRIV
	66	{ "AUTHPRIV", SYSLOG_FACILITY_AUTHPRIV },
	67	#endif
20244695	68	{ "LOCAL0", SYSLOG_FACILITY_LOCAL0 },
	69	{ "LOCAL1", SYSLOG_FACILITY_LOCAL1 },
	70	{ "LOCAL2", SYSLOG_FACILITY_LOCAL2 },
	71	{ "LOCAL3", SYSLOG_FACILITY_LOCAL3 },
	72	{ "LOCAL4", SYSLOG_FACILITY_LOCAL4 },
	73	{ "LOCAL5", SYSLOG_FACILITY_LOCAL5 },
	74	{ "LOCAL6", SYSLOG_FACILITY_LOCAL6 },
	75	{ "LOCAL7", SYSLOG_FACILITY_LOCAL7 },
5eaf8578	76	{ NULL, SYSLOG_FACILITY_NOT_SET }
20244695	77	};
	78
	79	static struct {
	80	const char *name;
	81	LogLevel val;
	82	} log_levels[] =
	83	{
	84	{ "QUIET", SYSLOG_LEVEL_QUIET },
	85	{ "FATAL", SYSLOG_LEVEL_FATAL },
	86	{ "ERROR", SYSLOG_LEVEL_ERROR },
	87	{ "INFO", SYSLOG_LEVEL_INFO },
	88	{ "VERBOSE", SYSLOG_LEVEL_VERBOSE },
	89	{ "DEBUG", SYSLOG_LEVEL_DEBUG1 },
	90	{ "DEBUG1", SYSLOG_LEVEL_DEBUG1 },
	91	{ "DEBUG2", SYSLOG_LEVEL_DEBUG2 },
	92	{ "DEBUG3", SYSLOG_LEVEL_DEBUG3 },
5eaf8578	93	{ NULL, SYSLOG_LEVEL_NOT_SET }
20244695	94	};
	95
	96	SyslogFacility
	97	log_facility_number(char *name)
	98	{
	99	int i;
4394a17f	100
20244695	101	if (name != NULL)
	102	for (i = 0; log_facilities[i].name; i++)
	103	if (strcasecmp(log_facilities[i].name, name) == 0)
	104	return log_facilities[i].val;
5eaf8578	105	return SYSLOG_FACILITY_NOT_SET;
20244695	106	}
	107
	108	LogLevel
	109	log_level_number(char *name)
	110	{
	111	int i;
4394a17f	112
20244695	113	if (name != NULL)
	114	for (i = 0; log_levels[i].name; i++)
	115	if (strcasecmp(log_levels[i].name, name) == 0)
	116	return log_levels[i].val;
5eaf8578	117	return SYSLOG_LEVEL_NOT_SET;
20244695	118	}
6a17f9c2	119
	120	/* Error messages that should be logged. */
	121
	122	void
5260325f	123	error(const char *fmt,...)
6a17f9c2	124	{
5260325f	125	va_list args;
4394a17f	126
5260325f	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
bbe88b6d	135	logit(const char *fmt,...)
6a17f9c2	136	{
5260325f	137	va_list args;
4394a17f	138
5260325f	139	va_start(args, fmt);
59c97189	140	do_log(SYSLOG_LEVEL_INFO, fmt, args);
5260325f	141	va_end(args);
6a17f9c2	142	}
	143
	144	/* More detailed messages (information that does not need to go to the log). */
	145
	146	void
5260325f	147	verbose(const char *fmt,...)
6a17f9c2	148	{
5260325f	149	va_list args;
4394a17f	150
5260325f	151	va_start(args, fmt);
	152	do_log(SYSLOG_LEVEL_VERBOSE, fmt, args);
	153	va_end(args);
6a17f9c2	154	}
	155
	156	/* Debugging messages that should not be logged during normal operation. */
	157
	158	void
5260325f	159	debug(const char *fmt,...)
6a17f9c2	160	{
5260325f	161	va_list args;
4394a17f	162
5260325f	163	va_start(args, fmt);
bcbf86ec	164	do_log(SYSLOG_LEVEL_DEBUG1, fmt, args);
	165	va_end(args);
	166	}
	167
	168	void
	169	debug2(const char *fmt,...)
	170	{
	171	va_list args;
4394a17f	172
bcbf86ec	173	va_start(args, fmt);
	174	do_log(SYSLOG_LEVEL_DEBUG2, fmt, args);
	175	va_end(args);
	176	}
	177
	178	void
	179	debug3(const char *fmt,...)
	180	{
	181	va_list args;
4394a17f	182
bcbf86ec	183	va_start(args, fmt);
bcbf86ec	184	do_log(SYSLOG_LEVEL_DEBUG3, fmt, args);
5260325f	185	va_end(args);
6a17f9c2	186	}
6a17f9c2	187
20244695	188	/*
	189	* Initialize the log.
	190	*/
9d6b7add	191
20244695	192	void
20244695	193	log_init(char *av0, LogLevel level, SyslogFacility facility, int on_stderr)
9d6b7add	194	{
29c82270	195	#if defined(HAVE_OPENLOG_R) && defined(SYSLOG_DATA_INIT)
	196	struct syslog_data sdata = SYSLOG_DATA_INIT;
	197	#endif
9d6b7add	198
b1d73a9a	199	argv0 = av0;
b1d73a9a	200
20244695	201	switch (level) {
	202	case SYSLOG_LEVEL_QUIET:
	203	case SYSLOG_LEVEL_FATAL:
	204	case SYSLOG_LEVEL_ERROR:
	205	case SYSLOG_LEVEL_INFO:
	206	case SYSLOG_LEVEL_VERBOSE:
	207	case SYSLOG_LEVEL_DEBUG1:
	208	case SYSLOG_LEVEL_DEBUG2:
	209	case SYSLOG_LEVEL_DEBUG3:
	210	log_level = level;
	211	break;
	212	default:
0be033ea	213	fprintf(stderr, "Unrecognized internal syslog level code %d\n",
20244695	214	(int) level);
	215	exit(1);
	216	}
	217
	218	log_on_stderr = on_stderr;
	219	if (on_stderr)
	220	return;
	221
	222	switch (facility) {
	223	case SYSLOG_FACILITY_DAEMON:
	224	log_facility = LOG_DAEMON;
	225	break;
	226	case SYSLOG_FACILITY_USER:
	227	log_facility = LOG_USER;
	228	break;
	229	case SYSLOG_FACILITY_AUTH:
	230	log_facility = LOG_AUTH;
	231	break;
cc3067d6	232	#ifdef LOG_AUTHPRIV
	233	case SYSLOG_FACILITY_AUTHPRIV:
	234	log_facility = LOG_AUTHPRIV;
	235	break;
20244695	236	#endif
	237	case SYSLOG_FACILITY_LOCAL0:
	238	log_facility = LOG_LOCAL0;
	239	break;
	240	case SYSLOG_FACILITY_LOCAL1:
	241	log_facility = LOG_LOCAL1;
	242	break;
	243	case SYSLOG_FACILITY_LOCAL2:
	244	log_facility = LOG_LOCAL2;
	245	break;
	246	case SYSLOG_FACILITY_LOCAL3:
	247	log_facility = LOG_LOCAL3;
	248	break;
	249	case SYSLOG_FACILITY_LOCAL4:
	250	log_facility = LOG_LOCAL4;
	251	break;
	252	case SYSLOG_FACILITY_LOCAL5:
	253	log_facility = LOG_LOCAL5;
	254	break;
	255	case SYSLOG_FACILITY_LOCAL6:
	256	log_facility = LOG_LOCAL6;
	257	break;
	258	case SYSLOG_FACILITY_LOCAL7:
	259	log_facility = LOG_LOCAL7;
	260	break;
	261	default:
	262	fprintf(stderr,
0be033ea	263	"Unrecognized internal syslog facility code %d\n",
20244695	264	(int) facility);
	265	exit(1);
	266	}
29c82270	267
	268	/*
	269	* If an external library (eg libwrap) attempts to use syslog
	270	* immediately after reexec, syslog may be pointing to the wrong
	271	* facility, so we force an open/close of syslog here.
	272	*/
	273	#if defined(HAVE_OPENLOG_R) && defined(SYSLOG_DATA_INIT)
	274	openlog_r(argv0 ? argv0 : __progname, LOG_PID, log_facility, &sdata);
	275	closelog_r(&sdata);
	276	#else
	277	openlog(argv0 ? argv0 : __progname, LOG_PID, log_facility);
	278	closelog();
	279	#endif
9d6b7add	280	}
9d6b7add	281
20244695	282	#define MSGBUFSIZ 1024
20244695	283
2bae80e9	284	void
20244695	285	do_log(LogLevel level, const char *fmt, va_list args)
9d6b7add	286	{
a90ed4b3	287	#if defined(HAVE_OPENLOG_R) && defined(SYSLOG_DATA_INIT)
c453493f	288	struct syslog_data sdata = SYSLOG_DATA_INIT;
c453493f	289	#endif
20244695	290	char msgbuf[MSGBUFSIZ];
	291	char fmtbuf[MSGBUFSIZ];
	292	char *txt = NULL;
	293	int pri = LOG_INFO;
	294
	295	if (level > log_level)
	296	return;
	297
	298	switch (level) {
	299	case SYSLOG_LEVEL_FATAL:
	300	if (!log_on_stderr)
	301	txt = "fatal";
	302	pri = LOG_CRIT;
	303	break;
	304	case SYSLOG_LEVEL_ERROR:
	305	if (!log_on_stderr)
	306	txt = "error";
	307	pri = LOG_ERR;
	308	break;
	309	case SYSLOG_LEVEL_INFO:
	310	pri = LOG_INFO;
	311	break;
	312	case SYSLOG_LEVEL_VERBOSE:
	313	pri = LOG_INFO;
	314	break;
	315	case SYSLOG_LEVEL_DEBUG1:
	316	txt = "debug1";
	317	pri = LOG_DEBUG;
	318	break;
	319	case SYSLOG_LEVEL_DEBUG2:
	320	txt = "debug2";
	321	pri = LOG_DEBUG;
	322	break;
	323	case SYSLOG_LEVEL_DEBUG3:
	324	txt = "debug3";
	325	pri = LOG_DEBUG;
	326	break;
	327	default:
	328	txt = "internal error";
	329	pri = LOG_ERR;
	330	break;
	331	}
	332	if (txt != NULL) {
	333	snprintf(fmtbuf, sizeof(fmtbuf), "%s: %s", txt, fmt);
	334	vsnprintf(msgbuf, sizeof(msgbuf), fmtbuf, args);
	335	} else {
	336	vsnprintf(msgbuf, sizeof(msgbuf), fmt, args);
	337	}
ac87b3c2	338	strnvis(fmtbuf, msgbuf, sizeof(fmtbuf),
ac87b3c2	339	log_on_stderr ? LOG_STDERR_VIS : LOG_SYSLOG_VIS);
20244695	340	if (log_on_stderr) {
5b0fe364	341	snprintf(msgbuf, sizeof msgbuf, "%s\r\n", fmtbuf);
5b0fe364	342	write(STDERR_FILENO, msgbuf, strlen(msgbuf));
20244695	343	} else {
a90ed4b3	344	#if defined(HAVE_OPENLOG_R) && defined(SYSLOG_DATA_INIT)
c453493f	345	openlog_r(argv0 ? argv0 : __progname, LOG_PID, log_facility, &sdata);
5b0fe364	346	syslog_r(pri, &sdata, "%.500s", fmtbuf);
c453493f	347	closelog_r(&sdata);
c453493f	348	#else
20244695	349	openlog(argv0 ? argv0 : __progname, LOG_PID, log_facility);
63cada0a	350	syslog(pri, "%.500s", fmtbuf);
20244695	351	closelog();
c453493f	352	#endif
20244695	353	}
9d6b7add	354	}