xref: /freebsd/usr.sbin/autofs/log.c (revision e19462c33b6d49009f26d8f8b86d53104b6a788f) 
13914ddf8SEdward Tomasz Napierala /*-
23914ddf8SEdward Tomasz Napierala  * Copyright (c) 2012 The FreeBSD Foundation
33914ddf8SEdward Tomasz Napierala  * All rights reserved.
43914ddf8SEdward Tomasz Napierala  *
53914ddf8SEdward Tomasz Napierala  * This software was developed by Edward Tomasz Napierala under sponsorship
63914ddf8SEdward Tomasz Napierala  * from the FreeBSD Foundation.
73914ddf8SEdward Tomasz Napierala  *
83914ddf8SEdward Tomasz Napierala  * Redistribution and use in source and binary forms, with or without
93914ddf8SEdward Tomasz Napierala  * modification, are permitted provided that the following conditions
103914ddf8SEdward Tomasz Napierala  * are met:
113914ddf8SEdward Tomasz Napierala  * 1. Redistributions of source code must retain the above copyright
123914ddf8SEdward Tomasz Napierala  *    notice, this list of conditions and the following disclaimer.
133914ddf8SEdward Tomasz Napierala  * 2. Redistributions in binary form must reproduce the above copyright
143914ddf8SEdward Tomasz Napierala  *    notice, this list of conditions and the following disclaimer in the
153914ddf8SEdward Tomasz Napierala  *    documentation and/or other materials provided with the distribution.
163914ddf8SEdward Tomasz Napierala  *
173914ddf8SEdward Tomasz Napierala  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
183914ddf8SEdward Tomasz Napierala  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
193914ddf8SEdward Tomasz Napierala  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
203914ddf8SEdward Tomasz Napierala  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
213914ddf8SEdward Tomasz Napierala  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
223914ddf8SEdward Tomasz Napierala  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
233914ddf8SEdward Tomasz Napierala  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
243914ddf8SEdward Tomasz Napierala  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
253914ddf8SEdward Tomasz Napierala  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
263914ddf8SEdward Tomasz Napierala  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
273914ddf8SEdward Tomasz Napierala  * SUCH DAMAGE.
283914ddf8SEdward Tomasz Napierala  *
293914ddf8SEdward Tomasz Napierala  */
303914ddf8SEdward Tomasz Napierala 
31925fd945SEdward Tomasz Napierala #include <sys/cdefs.h>
32925fd945SEdward Tomasz Napierala __FBSDID("$FreeBSD$");
33925fd945SEdward Tomasz Napierala 
343914ddf8SEdward Tomasz Napierala #include <errno.h>
353914ddf8SEdward Tomasz Napierala #include <stdarg.h>
363914ddf8SEdward Tomasz Napierala #include <stdio.h>
373914ddf8SEdward Tomasz Napierala #include <stdlib.h>
383914ddf8SEdward Tomasz Napierala #include <string.h>
393914ddf8SEdward Tomasz Napierala #include <syslog.h>
403914ddf8SEdward Tomasz Napierala #include <vis.h>
413914ddf8SEdward Tomasz Napierala 
423914ddf8SEdward Tomasz Napierala #include "common.h"
433914ddf8SEdward Tomasz Napierala 
443914ddf8SEdward Tomasz Napierala static int log_level = 0;
453914ddf8SEdward Tomasz Napierala static char *peer_name = NULL;
463914ddf8SEdward Tomasz Napierala static char *peer_addr = NULL;
473914ddf8SEdward Tomasz Napierala 
483914ddf8SEdward Tomasz Napierala #define	MSGBUF_LEN	1024
493914ddf8SEdward Tomasz Napierala 
503914ddf8SEdward Tomasz Napierala void
513914ddf8SEdward Tomasz Napierala log_init(int level)
523914ddf8SEdward Tomasz Napierala {
533914ddf8SEdward Tomasz Napierala 
543914ddf8SEdward Tomasz Napierala 	log_level = level;
553914ddf8SEdward Tomasz Napierala 	openlog(getprogname(), LOG_NDELAY | LOG_PID, LOG_DAEMON);
563914ddf8SEdward Tomasz Napierala }
573914ddf8SEdward Tomasz Napierala 
583914ddf8SEdward Tomasz Napierala void
593914ddf8SEdward Tomasz Napierala log_set_peer_name(const char *name)
603914ddf8SEdward Tomasz Napierala {
613914ddf8SEdward Tomasz Napierala 
623914ddf8SEdward Tomasz Napierala 	/*
633914ddf8SEdward Tomasz Napierala 	 * XXX: Turn it into assertion?
643914ddf8SEdward Tomasz Napierala 	 */
653914ddf8SEdward Tomasz Napierala 	if (peer_name != NULL)
663914ddf8SEdward Tomasz Napierala 		log_errx(1, "%s called twice", __func__);
673914ddf8SEdward Tomasz Napierala 	if (peer_addr == NULL)
683914ddf8SEdward Tomasz Napierala 		log_errx(1, "%s called before log_set_peer_addr", __func__);
693914ddf8SEdward Tomasz Napierala 
703914ddf8SEdward Tomasz Napierala 	peer_name = checked_strdup(name);
713914ddf8SEdward Tomasz Napierala }
723914ddf8SEdward Tomasz Napierala 
733914ddf8SEdward Tomasz Napierala void
743914ddf8SEdward Tomasz Napierala log_set_peer_addr(const char *addr)
753914ddf8SEdward Tomasz Napierala {
763914ddf8SEdward Tomasz Napierala 
773914ddf8SEdward Tomasz Napierala 	/*
783914ddf8SEdward Tomasz Napierala 	 * XXX: Turn it into assertion?
793914ddf8SEdward Tomasz Napierala 	 */
803914ddf8SEdward Tomasz Napierala 	if (peer_addr != NULL)
813914ddf8SEdward Tomasz Napierala 		log_errx(1, "%s called twice", __func__);
823914ddf8SEdward Tomasz Napierala 
833914ddf8SEdward Tomasz Napierala 	peer_addr = checked_strdup(addr);
843914ddf8SEdward Tomasz Napierala }
853914ddf8SEdward Tomasz Napierala 
863914ddf8SEdward Tomasz Napierala static void
873914ddf8SEdward Tomasz Napierala log_common(int priority, int log_errno, const char *fmt, va_list ap)
883914ddf8SEdward Tomasz Napierala {
893914ddf8SEdward Tomasz Napierala 	static char msgbuf[MSGBUF_LEN];
903914ddf8SEdward Tomasz Napierala 	static char msgbuf_strvised[MSGBUF_LEN * 4 + 1];
91*e19462c3SEdward Tomasz Napierala 	char *errstr;
923914ddf8SEdward Tomasz Napierala 	int ret;
933914ddf8SEdward Tomasz Napierala 
943914ddf8SEdward Tomasz Napierala 	ret = vsnprintf(msgbuf, sizeof(msgbuf), fmt, ap);
953914ddf8SEdward Tomasz Napierala 	if (ret < 0) {
963914ddf8SEdward Tomasz Napierala 		fprintf(stderr, "%s: snprintf failed", getprogname());
973914ddf8SEdward Tomasz Napierala 		syslog(LOG_CRIT, "snprintf failed");
983914ddf8SEdward Tomasz Napierala 		exit(1);
993914ddf8SEdward Tomasz Napierala 	}
1003914ddf8SEdward Tomasz Napierala 
1013914ddf8SEdward Tomasz Napierala 	ret = strnvis(msgbuf_strvised, sizeof(msgbuf_strvised), msgbuf, VIS_NL);
1023914ddf8SEdward Tomasz Napierala 	if (ret < 0) {
1033914ddf8SEdward Tomasz Napierala 		fprintf(stderr, "%s: strnvis failed", getprogname());
1043914ddf8SEdward Tomasz Napierala 		syslog(LOG_CRIT, "strnvis failed");
1053914ddf8SEdward Tomasz Napierala 		exit(1);
1063914ddf8SEdward Tomasz Napierala 	}
1073914ddf8SEdward Tomasz Napierala 
1083914ddf8SEdward Tomasz Napierala 	if (log_errno == -1) {
1093914ddf8SEdward Tomasz Napierala 		if (peer_name != NULL) {
1103914ddf8SEdward Tomasz Napierala 			fprintf(stderr, "%s: %s (%s): %s\n", getprogname(),
1113914ddf8SEdward Tomasz Napierala 			    peer_addr, peer_name, msgbuf_strvised);
1123914ddf8SEdward Tomasz Napierala 			syslog(priority, "%s (%s): %s",
1133914ddf8SEdward Tomasz Napierala 			    peer_addr, peer_name, msgbuf_strvised);
1143914ddf8SEdward Tomasz Napierala 		} else if (peer_addr != NULL) {
1153914ddf8SEdward Tomasz Napierala 			fprintf(stderr, "%s: %s: %s\n", getprogname(),
1163914ddf8SEdward Tomasz Napierala 			    peer_addr, msgbuf_strvised);
1173914ddf8SEdward Tomasz Napierala 			syslog(priority, "%s: %s",
1183914ddf8SEdward Tomasz Napierala 			    peer_addr, msgbuf_strvised);
1193914ddf8SEdward Tomasz Napierala 		} else {
1203914ddf8SEdward Tomasz Napierala 			fprintf(stderr, "%s: %s\n", getprogname(), msgbuf_strvised);
1213914ddf8SEdward Tomasz Napierala 			syslog(priority, "%s", msgbuf_strvised);
1223914ddf8SEdward Tomasz Napierala 		}
1233914ddf8SEdward Tomasz Napierala 
1243914ddf8SEdward Tomasz Napierala 	} else {
125*e19462c3SEdward Tomasz Napierala 		errstr = strerror(log_errno);
126*e19462c3SEdward Tomasz Napierala 
1273914ddf8SEdward Tomasz Napierala 		if (peer_name != NULL) {
1283914ddf8SEdward Tomasz Napierala 			fprintf(stderr, "%s: %s (%s): %s: %s\n", getprogname(),
129*e19462c3SEdward Tomasz Napierala 			    peer_addr, peer_name, msgbuf_strvised, errstr);
1303914ddf8SEdward Tomasz Napierala 			syslog(priority, "%s (%s): %s: %s",
131*e19462c3SEdward Tomasz Napierala 			    peer_addr, peer_name, msgbuf_strvised, errstr);
1323914ddf8SEdward Tomasz Napierala 		} else if (peer_addr != NULL) {
1333914ddf8SEdward Tomasz Napierala 			fprintf(stderr, "%s: %s: %s: %s\n", getprogname(),
134*e19462c3SEdward Tomasz Napierala 			    peer_addr, msgbuf_strvised, errstr);
1353914ddf8SEdward Tomasz Napierala 			syslog(priority, "%s: %s: %s",
136*e19462c3SEdward Tomasz Napierala 			    peer_addr, msgbuf_strvised, errstr);
1373914ddf8SEdward Tomasz Napierala 		} else {
1383914ddf8SEdward Tomasz Napierala 			fprintf(stderr, "%s: %s: %s\n", getprogname(),
139*e19462c3SEdward Tomasz Napierala 			    msgbuf_strvised, errstr);
1403914ddf8SEdward Tomasz Napierala 			syslog(priority, "%s: %s",
141*e19462c3SEdward Tomasz Napierala 			    msgbuf_strvised, errstr);
1423914ddf8SEdward Tomasz Napierala 		}
1433914ddf8SEdward Tomasz Napierala 	}
1443914ddf8SEdward Tomasz Napierala }
1453914ddf8SEdward Tomasz Napierala 
1463914ddf8SEdward Tomasz Napierala void
1473914ddf8SEdward Tomasz Napierala log_err(int eval, const char *fmt, ...)
1483914ddf8SEdward Tomasz Napierala {
1493914ddf8SEdward Tomasz Napierala 	va_list ap;
1503914ddf8SEdward Tomasz Napierala 
1513914ddf8SEdward Tomasz Napierala 	va_start(ap, fmt);
1523914ddf8SEdward Tomasz Napierala 	log_common(LOG_CRIT, errno, fmt, ap);
1533914ddf8SEdward Tomasz Napierala 	va_end(ap);
1543914ddf8SEdward Tomasz Napierala 
1553914ddf8SEdward Tomasz Napierala 	exit(eval);
1563914ddf8SEdward Tomasz Napierala }
1573914ddf8SEdward Tomasz Napierala 
1583914ddf8SEdward Tomasz Napierala void
1593914ddf8SEdward Tomasz Napierala log_errx(int eval, const char *fmt, ...)
1603914ddf8SEdward Tomasz Napierala {
1613914ddf8SEdward Tomasz Napierala 	va_list ap;
1623914ddf8SEdward Tomasz Napierala 
1633914ddf8SEdward Tomasz Napierala 	va_start(ap, fmt);
1643914ddf8SEdward Tomasz Napierala 	log_common(LOG_CRIT, -1, fmt, ap);
1653914ddf8SEdward Tomasz Napierala 	va_end(ap);
1663914ddf8SEdward Tomasz Napierala 
1673914ddf8SEdward Tomasz Napierala 	exit(eval);
1683914ddf8SEdward Tomasz Napierala }
1693914ddf8SEdward Tomasz Napierala 
1703914ddf8SEdward Tomasz Napierala void
1713914ddf8SEdward Tomasz Napierala log_warn(const char *fmt, ...)
1723914ddf8SEdward Tomasz Napierala {
1733914ddf8SEdward Tomasz Napierala 	va_list ap;
1743914ddf8SEdward Tomasz Napierala 
1753914ddf8SEdward Tomasz Napierala 	va_start(ap, fmt);
1763914ddf8SEdward Tomasz Napierala 	log_common(LOG_WARNING, errno, fmt, ap);
1773914ddf8SEdward Tomasz Napierala 	va_end(ap);
1783914ddf8SEdward Tomasz Napierala }
1793914ddf8SEdward Tomasz Napierala 
1803914ddf8SEdward Tomasz Napierala void
1813914ddf8SEdward Tomasz Napierala log_warnx(const char *fmt, ...)
1823914ddf8SEdward Tomasz Napierala {
1833914ddf8SEdward Tomasz Napierala 	va_list ap;
1843914ddf8SEdward Tomasz Napierala 
1853914ddf8SEdward Tomasz Napierala 	va_start(ap, fmt);
1863914ddf8SEdward Tomasz Napierala 	log_common(LOG_WARNING, -1, fmt, ap);
1873914ddf8SEdward Tomasz Napierala 	va_end(ap);
1883914ddf8SEdward Tomasz Napierala }
1893914ddf8SEdward Tomasz Napierala 
1903914ddf8SEdward Tomasz Napierala void
1913914ddf8SEdward Tomasz Napierala log_debugx(const char *fmt, ...)
1923914ddf8SEdward Tomasz Napierala {
1933914ddf8SEdward Tomasz Napierala 	va_list ap;
1943914ddf8SEdward Tomasz Napierala 
1953914ddf8SEdward Tomasz Napierala 	if (log_level == 0)
1963914ddf8SEdward Tomasz Napierala 		return;
1973914ddf8SEdward Tomasz Napierala 
1983914ddf8SEdward Tomasz Napierala 	va_start(ap, fmt);
1993914ddf8SEdward Tomasz Napierala 	log_common(LOG_DEBUG, -1, fmt, ap);
2003914ddf8SEdward Tomasz Napierala 	va_end(ap);
2013914ddf8SEdward Tomasz Napierala }
202