[gssapi-openssh.git] / openssh / log.c

/* $OpenBSD: log.c,v 1.40 2007/05/17 07:50:31 djm Exp $ */
/*
 * 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 <sys/types.h>

#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <syslog.h>
#include <unistd.h>
#include <errno.h>
#if defined(HAVE_STRNVIS) && defined(HAVE_VIS_H)
# include <vis.h>
#endif

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

#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);
}

void
sigdie(const char *fmt,...)
{
#ifdef DO_LOG_SAFE_IN_SIGHAND
	va_list args;

	va_start(args, fmt);
	do_log(SYSLOG_LEVEL_FATAL, fmt, args);
	va_end(args);
#endif
	_exit(1);
}


/* 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;
	int saved_errno = errno;

	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
	}
	errno = saved_errno;
}
Commit	Line	Data
fa0f0f45	1	/* $OpenBSD: log.c,v 1.40 2007/05/17 07:50:31 djm Exp $ */
3c0ef626	2	/*
	3	* Author: Tatu Ylonen <ylo@cs.hut.fi>
	4	* Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
	5	* All rights reserved
	6	*
	7	* As far as I am concerned, the code I have written for this software
	8	* can be used freely for any purpose. Any derived versions of this
	9	* software must be clearly marked as such, and if the derived work is
	10	* incompatible with the protocol description in the RFC file, it must be
	11	* called by a name other than "ssh" or "Secure Shell".
	12	*/
	13	/*
	14	* Copyright (c) 2000 Markus Friedl. All rights reserved.
	15	*
	16	* Redistribution and use in source and binary forms, with or without
	17	* modification, are permitted provided that the following conditions
	18	* are met:
	19	* 1. Redistributions of source code must retain the above copyright
	20	* notice, this list of conditions and the following disclaimer.
	21	* 2. Redistributions in binary form must reproduce the above copyright
	22	* notice, this list of conditions and the following disclaimer in the
	23	* documentation and/or other materials provided with the distribution.
	24	*
	25	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
	26	* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
	27	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
	28	* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
	29	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
	30	* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
	31	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
	32	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
	33	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
	34	* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
	35	*/
	36
	37	#include "includes.h"
3c0ef626	38
30460aeb	39	#include <sys/types.h>
3c0ef626	40
30460aeb	41	#include <stdarg.h>
	42	#include <stdio.h>
	43	#include <stdlib.h>
	44	#include <string.h>
3c0ef626	45	#include <syslog.h>
30460aeb	46	#include <unistd.h>
fa0f0f45	47	#include <errno.h>
29d88157	48	#if defined(HAVE_STRNVIS) && defined(HAVE_VIS_H)
	49	# include <vis.h>
	50	#endif
3c0ef626	51
30460aeb	52	#include "xmalloc.h"
	53	#include "log.h"
	54
3c0ef626	55	static LogLevel log_level = SYSLOG_LEVEL_INFO;
	56	static int log_on_stderr = 1;
	57	static int log_facility = LOG_AUTH;
	58	static char *argv0;
	59
	60	extern char *__progname;
	61
7e82606e	62	#define LOG_SYSLOG_VIS (VIS_CSTYLE\|VIS_NL\|VIS_TAB\|VIS_OCTAL)
	63	#define LOG_STDERR_VIS (VIS_SAFE\|VIS_OCTAL)
	64
3c0ef626	65	/* textual representation of log-facilities/levels */
	66
	67	static struct {
	68	const char *name;
	69	SyslogFacility val;
	70	} log_facilities[] = {
	71	{ "DAEMON", SYSLOG_FACILITY_DAEMON },
	72	{ "USER", SYSLOG_FACILITY_USER },
	73	{ "AUTH", SYSLOG_FACILITY_AUTH },
	74	#ifdef LOG_AUTHPRIV
	75	{ "AUTHPRIV", SYSLOG_FACILITY_AUTHPRIV },
	76	#endif
	77	{ "LOCAL0", SYSLOG_FACILITY_LOCAL0 },
	78	{ "LOCAL1", SYSLOG_FACILITY_LOCAL1 },
	79	{ "LOCAL2", SYSLOG_FACILITY_LOCAL2 },
	80	{ "LOCAL3", SYSLOG_FACILITY_LOCAL3 },
	81	{ "LOCAL4", SYSLOG_FACILITY_LOCAL4 },
	82	{ "LOCAL5", SYSLOG_FACILITY_LOCAL5 },
	83	{ "LOCAL6", SYSLOG_FACILITY_LOCAL6 },
	84	{ "LOCAL7", SYSLOG_FACILITY_LOCAL7 },
b59afbfe	85	{ NULL, SYSLOG_FACILITY_NOT_SET }
3c0ef626	86	};
	87
	88	static struct {
	89	const char *name;
	90	LogLevel val;
	91	} log_levels[] =
	92	{
	93	{ "QUIET", SYSLOG_LEVEL_QUIET },
	94	{ "FATAL", SYSLOG_LEVEL_FATAL },
	95	{ "ERROR", SYSLOG_LEVEL_ERROR },
	96	{ "INFO", SYSLOG_LEVEL_INFO },
	97	{ "VERBOSE", SYSLOG_LEVEL_VERBOSE },
	98	{ "DEBUG", SYSLOG_LEVEL_DEBUG1 },
	99	{ "DEBUG1", SYSLOG_LEVEL_DEBUG1 },
	100	{ "DEBUG2", SYSLOG_LEVEL_DEBUG2 },
	101	{ "DEBUG3", SYSLOG_LEVEL_DEBUG3 },
b59afbfe	102	{ NULL, SYSLOG_LEVEL_NOT_SET }
3c0ef626	103	};
3c0ef626	104
3c0ef626	105	SyslogFacility
	106	log_facility_number(char *name)
	107	{
	108	int i;
d03f4262	109
3c0ef626	110	if (name != NULL)
	111	for (i = 0; log_facilities[i].name; i++)
	112	if (strcasecmp(log_facilities[i].name, name) == 0)
	113	return log_facilities[i].val;
b59afbfe	114	return SYSLOG_FACILITY_NOT_SET;
3c0ef626	115	}
	116
	117	LogLevel
	118	log_level_number(char *name)
	119	{
	120	int i;
d03f4262	121
3c0ef626	122	if (name != NULL)
	123	for (i = 0; log_levels[i].name; i++)
	124	if (strcasecmp(log_levels[i].name, name) == 0)
	125	return log_levels[i].val;
b59afbfe	126	return SYSLOG_LEVEL_NOT_SET;
3c0ef626	127	}
	128
	129	/* Error messages that should be logged. */
	130
	131	void
	132	error(const char *fmt,...)
	133	{
	134	va_list args;
d03f4262	135
3c0ef626	136	va_start(args, fmt);
	137	do_log(SYSLOG_LEVEL_ERROR, fmt, args);
	138	va_end(args);
	139	}
	140
30460aeb	141	void
	142	sigdie(const char *fmt,...)
	143	{
	144	#ifdef DO_LOG_SAFE_IN_SIGHAND
	145	va_list args;
	146
	147	va_start(args, fmt);
	148	do_log(SYSLOG_LEVEL_FATAL, fmt, args);
	149	va_end(args);
	150	#endif
	151	_exit(1);
	152	}
	153
	154
3c0ef626	155	/* Log this message (information that usually should go to the log). */
	156
	157	void
7cac2b65	158	logit(const char *fmt,...)
3c0ef626	159	{
3c0ef626	160	va_list args;
d03f4262	161
3c0ef626	162	va_start(args, fmt);
	163	do_log(SYSLOG_LEVEL_INFO, fmt, args);
	164	va_end(args);
	165	}
	166
	167	/* More detailed messages (information that does not need to go to the log). */
	168
	169	void
	170	verbose(const char *fmt,...)
	171	{
	172	va_list args;
d03f4262	173
3c0ef626	174	va_start(args, fmt);
	175	do_log(SYSLOG_LEVEL_VERBOSE, fmt, args);
	176	va_end(args);
	177	}
	178
	179	/* Debugging messages that should not be logged during normal operation. */
	180
	181	void
	182	debug(const char *fmt,...)
	183	{
	184	va_list args;
d03f4262	185
3c0ef626	186	va_start(args, fmt);
	187	do_log(SYSLOG_LEVEL_DEBUG1, fmt, args);
	188	va_end(args);
	189	}
	190
	191	void
	192	debug2(const char *fmt,...)
	193	{
	194	va_list args;
d03f4262	195
3c0ef626	196	va_start(args, fmt);
	197	do_log(SYSLOG_LEVEL_DEBUG2, fmt, args);
	198	va_end(args);
	199	}
	200
	201	void
	202	debug3(const char *fmt,...)
	203	{
	204	va_list args;
d03f4262	205
3c0ef626	206	va_start(args, fmt);
	207	do_log(SYSLOG_LEVEL_DEBUG3, fmt, args);
	208	va_end(args);
	209	}
	210
3c0ef626	211	/*
	212	* Initialize the log.
	213	*/
	214
	215	void
	216	log_init(char *av0, LogLevel level, SyslogFacility facility, int on_stderr)
	217	{
dfddba3d	218	#if defined(HAVE_OPENLOG_R) && defined(SYSLOG_DATA_INIT)
	219	struct syslog_data sdata = SYSLOG_DATA_INIT;
	220	#endif
8b32eddc	221
3c0ef626	222	argv0 = av0;
	223
	224	switch (level) {
	225	case SYSLOG_LEVEL_QUIET:
	226	case SYSLOG_LEVEL_FATAL:
	227	case SYSLOG_LEVEL_ERROR:
	228	case SYSLOG_LEVEL_INFO:
	229	case SYSLOG_LEVEL_VERBOSE:
	230	case SYSLOG_LEVEL_DEBUG1:
	231	case SYSLOG_LEVEL_DEBUG2:
	232	case SYSLOG_LEVEL_DEBUG3:
	233	log_level = level;
	234	break;
	235	default:
	236	fprintf(stderr, "Unrecognized internal syslog level code %d\n",
	237	(int) level);
	238	exit(1);
	239	}
	240
	241	log_on_stderr = on_stderr;
	242	if (on_stderr)
	243	return;
	244
	245	switch (facility) {
	246	case SYSLOG_FACILITY_DAEMON:
	247	log_facility = LOG_DAEMON;
	248	break;
	249	case SYSLOG_FACILITY_USER:
	250	log_facility = LOG_USER;
	251	break;
	252	case SYSLOG_FACILITY_AUTH:
	253	log_facility = LOG_AUTH;
	254	break;
	255	#ifdef LOG_AUTHPRIV
	256	case SYSLOG_FACILITY_AUTHPRIV:
	257	log_facility = LOG_AUTHPRIV;
	258	break;
	259	#endif
	260	case SYSLOG_FACILITY_LOCAL0:
	261	log_facility = LOG_LOCAL0;
	262	break;
	263	case SYSLOG_FACILITY_LOCAL1:
	264	log_facility = LOG_LOCAL1;
	265	break;
	266	case SYSLOG_FACILITY_LOCAL2:
	267	log_facility = LOG_LOCAL2;
	268	break;
	269	case SYSLOG_FACILITY_LOCAL3:
	270	log_facility = LOG_LOCAL3;
	271	break;
	272	case SYSLOG_FACILITY_LOCAL4:
	273	log_facility = LOG_LOCAL4;
	274	break;
	275	case SYSLOG_FACILITY_LOCAL5:
	276	log_facility = LOG_LOCAL5;
	277	break;
	278	case SYSLOG_FACILITY_LOCAL6:
	279	log_facility = LOG_LOCAL6;
	280	break;
	281	case SYSLOG_FACILITY_LOCAL7:
	282	log_facility = LOG_LOCAL7;
	283	break;
	284	default:
	285	fprintf(stderr,
286	"Unrecognized internal syslog facility code %d\n",
287	(int) facility);
288	exit(1);
289	}
dfddba3d	290
	291	/*
	292	* If an external library (eg libwrap) attempts to use syslog
	293	* immediately after reexec, syslog may be pointing to the wrong
	294	* facility, so we force an open/close of syslog here.
	295	*/
	296	#if defined(HAVE_OPENLOG_R) && defined(SYSLOG_DATA_INIT)
	297	openlog_r(argv0 ? argv0 : __progname, LOG_PID, log_facility, &sdata);
	298	closelog_r(&sdata);
	299	#else
	300	openlog(argv0 ? argv0 : __progname, LOG_PID, log_facility);
	301	closelog();
	302	#endif
3c0ef626	303	}
	304
	305	#define MSGBUFSIZ 1024
	306
b59afbfe	307	void
3c0ef626	308	do_log(LogLevel level, const char *fmt, va_list args)
3c0ef626	309	{
540d72c3	310	#if defined(HAVE_OPENLOG_R) && defined(SYSLOG_DATA_INIT)
7cac2b65	311	struct syslog_data sdata = SYSLOG_DATA_INIT;
7cac2b65	312	#endif
3c0ef626	313	char msgbuf[MSGBUFSIZ];
	314	char fmtbuf[MSGBUFSIZ];
	315	char *txt = NULL;
	316	int pri = LOG_INFO;
fa0f0f45	317	int saved_errno = errno;
3c0ef626	318
	319	if (level > log_level)
	320	return;
	321
	322	switch (level) {
	323	case SYSLOG_LEVEL_FATAL:
	324	if (!log_on_stderr)
	325	txt = "fatal";
	326	pri = LOG_CRIT;
	327	break;
	328	case SYSLOG_LEVEL_ERROR:
	329	if (!log_on_stderr)
	330	txt = "error";
	331	pri = LOG_ERR;
	332	break;
	333	case SYSLOG_LEVEL_INFO:
	334	pri = LOG_INFO;
	335	break;
	336	case SYSLOG_LEVEL_VERBOSE:
	337	pri = LOG_INFO;
	338	break;
	339	case SYSLOG_LEVEL_DEBUG1:
	340	txt = "debug1";
	341	pri = LOG_DEBUG;
	342	break;
	343	case SYSLOG_LEVEL_DEBUG2:
	344	txt = "debug2";
	345	pri = LOG_DEBUG;
	346	break;
	347	case SYSLOG_LEVEL_DEBUG3:
	348	txt = "debug3";
	349	pri = LOG_DEBUG;
	350	break;
	351	default:
	352	txt = "internal error";
	353	pri = LOG_ERR;
	354	break;
	355	}
	356	if (txt != NULL) {
	357	snprintf(fmtbuf, sizeof(fmtbuf), "%s: %s", txt, fmt);
	358	vsnprintf(msgbuf, sizeof(msgbuf), fmtbuf, args);
	359	} else {
	360	vsnprintf(msgbuf, sizeof(msgbuf), fmt, args);
	361	}
7e82606e	362	strnvis(fmtbuf, msgbuf, sizeof(fmtbuf),
7e82606e	363	log_on_stderr ? LOG_STDERR_VIS : LOG_SYSLOG_VIS);
3c0ef626	364	if (log_on_stderr) {
7cac2b65	365	snprintf(msgbuf, sizeof msgbuf, "%s\r\n", fmtbuf);
7cac2b65	366	write(STDERR_FILENO, msgbuf, strlen(msgbuf));
3c0ef626	367	} else {
540d72c3	368	#if defined(HAVE_OPENLOG_R) && defined(SYSLOG_DATA_INIT)
7cac2b65	369	openlog_r(argv0 ? argv0 : __progname, LOG_PID, log_facility, &sdata);
	370	syslog_r(pri, &sdata, "%.500s", fmtbuf);
	371	closelog_r(&sdata);
	372	#else
3c0ef626	373	openlog(argv0 ? argv0 : __progname, LOG_PID, log_facility);
bfe49944	374	syslog(pri, "%.500s", fmtbuf);
3c0ef626	375	closelog();
7cac2b65	376	#endif
3c0ef626	377	}
fa0f0f45	378	errno = saved_errno;
3c0ef626	379	}