2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
4 * Copyright (c) 2012 The FreeBSD Foundation
6 * This software was developed by Edward Tomasz Napierala under sponsorship
7 * from the FreeBSD Foundation.
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in the
16 * documentation and/or other materials provided with the distribution.
18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 #include <sys/cdefs.h>
33 __FBSDID("$FreeBSD$");
45 static int log_level = 0;
46 static char *peer_name = NULL;
47 static char *peer_addr = NULL;
49 #define MSGBUF_LEN 1024
56 openlog(getprogname(), LOG_NDELAY | LOG_PID, LOG_DAEMON);
60 log_set_peer_name(const char *name)
64 * XXX: Turn it into assertion?
66 if (peer_name != NULL)
67 log_errx(1, "%s called twice", __func__);
68 if (peer_addr == NULL)
69 log_errx(1, "%s called before log_set_peer_addr", __func__);
71 peer_name = checked_strdup(name);
75 log_set_peer_addr(const char *addr)
79 * XXX: Turn it into assertion?
81 if (peer_addr != NULL)
82 log_errx(1, "%s called twice", __func__);
84 peer_addr = checked_strdup(addr);
88 log_common(int priority, int log_errno, const char *fmt, va_list ap)
90 static char msgbuf[MSGBUF_LEN];
91 static char msgbuf_strvised[MSGBUF_LEN * 4 + 1];
95 ret = vsnprintf(msgbuf, sizeof(msgbuf), fmt, ap);
97 fprintf(stderr, "%s: snprintf failed", getprogname());
98 syslog(LOG_CRIT, "snprintf failed");
102 ret = strnvis(msgbuf_strvised, sizeof(msgbuf_strvised), msgbuf, VIS_NL);
104 fprintf(stderr, "%s: strnvis failed", getprogname());
105 syslog(LOG_CRIT, "strnvis failed");
109 if (log_errno == -1) {
110 if (peer_name != NULL) {
111 fprintf(stderr, "%s: %s (%s): %s\n", getprogname(),
112 peer_addr, peer_name, msgbuf_strvised);
113 syslog(priority, "%s (%s): %s",
114 peer_addr, peer_name, msgbuf_strvised);
115 } else if (peer_addr != NULL) {
116 fprintf(stderr, "%s: %s: %s\n", getprogname(),
117 peer_addr, msgbuf_strvised);
118 syslog(priority, "%s: %s",
119 peer_addr, msgbuf_strvised);
121 fprintf(stderr, "%s: %s\n", getprogname(), msgbuf_strvised);
122 syslog(priority, "%s", msgbuf_strvised);
126 errstr = strerror(log_errno);
128 if (peer_name != NULL) {
129 fprintf(stderr, "%s: %s (%s): %s: %s\n", getprogname(),
130 peer_addr, peer_name, msgbuf_strvised, errstr);
131 syslog(priority, "%s (%s): %s: %s",
132 peer_addr, peer_name, msgbuf_strvised, errstr);
133 } else if (peer_addr != NULL) {
134 fprintf(stderr, "%s: %s: %s: %s\n", getprogname(),
135 peer_addr, msgbuf_strvised, errstr);
136 syslog(priority, "%s: %s: %s",
137 peer_addr, msgbuf_strvised, errstr);
139 fprintf(stderr, "%s: %s: %s\n", getprogname(),
140 msgbuf_strvised, errstr);
141 syslog(priority, "%s: %s",
142 msgbuf_strvised, errstr);
148 log_err(int eval, const char *fmt, ...)
153 log_common(LOG_CRIT, errno, fmt, ap);
160 log_errx(int eval, const char *fmt, ...)
165 log_common(LOG_CRIT, -1, fmt, ap);
172 log_warn(const char *fmt, ...)
177 log_common(LOG_WARNING, errno, fmt, ap);
182 log_warnx(const char *fmt, ...)
187 log_common(LOG_WARNING, -1, fmt, ap);
192 log_debugx(const char *fmt, ...)
200 log_common(LOG_DEBUG, -1, fmt, ap);