2 * Copyright (c) 1983, 1993
3 * The Regents of the University of California. All rights reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by the University of
16 * California, Berkeley and its contributors.
17 * 4. Neither the name of the University nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
35 static const char copyright[] =
36 "@(#) Copyright (c) 1983, 1993\n\
37 The Regents of the University of California. All rights reserved.\n";
42 static char sccsid[] = "@(#)logger.c 8.1 (Berkeley) 6/6/93";
44 static const char rcsid[] =
45 "$FreeBSD: src/usr.bin/logger/logger.c,v 1.5.2.3 2001/09/06 17:38:57 ru Exp $";
48 #include <sys/types.h>
49 #include <sys/socket.h>
50 #include <netinet/in.h>
63 int decode __P((char *, CODE *));
64 int pencode __P((char *));
65 static void logmessage __P((int, char *, char *));
66 static void usage __P((void));
71 struct sockaddr_storage addr;
75 int family = PF_UNSPEC; /* protocol family (IPv4, IPv6 or both) */
77 int family = PF_INET; /* protocol family (IPv4 only) */
79 int send_to_all = 0; /* send message to all IPv4/IPv6 addresses */
82 * logger -- read and log utility
84 * Reads from an input and arranges to write the result on the system
92 int ch, logflags, pri;
93 char *tag, *host, buf[1024];
97 pri = LOG_USER | LOG_NOTICE;
100 while ((ch = getopt(argc, argv, "46Af:h:ip:st:")) != -1)
113 case 'f': /* file to log */
114 if (freopen(optarg, "r", stdin) == NULL)
115 err(1, "%s", optarg);
117 case 'h': /* hostname to deliver to */
120 case 'i': /* log process id also */
123 case 'p': /* priority */
124 pri = pencode(optarg);
126 case 's': /* log to standard error */
127 logflags |= LOG_PERROR;
139 /* setup for logging */
140 openlog(tag ? tag : getlogin(), logflags, 0);
141 (void) fclose(stdout);
143 /* log input line if appropriate */
145 register char *p, *endp;
148 for (p = buf, endp = buf + sizeof(buf) - 2; *argv;) {
150 if (p + len > endp && p > buf) {
151 logmessage(pri, host, buf);
154 if (len > sizeof(buf) - 1)
155 logmessage(pri, host, *argv++);
159 bcopy(*argv++, p, len);
164 logmessage(pri, host, buf);
166 while (fgets(buf, sizeof(buf), stdin) != NULL)
167 logmessage(pri, host, buf);
172 * Send the message to syslog, either on the local host, or on a remote host
175 logmessage(int pri, char *host, char *buf)
177 static struct socks *socks;
178 static int nsock = 0;
179 struct addrinfo hints, *res, *r;
181 int maxs, len, sock, error, i, lsent;
184 syslog(pri, "%s", buf);
188 if (nsock <= 0) { /* set up socket stuff */
189 /* resolve hostname */
190 memset(&hints, 0, sizeof(hints));
191 hints.ai_family = family;
192 hints.ai_socktype = SOCK_DGRAM;
193 error = getaddrinfo(host, "syslog", &hints, &res);
194 if (error == EAI_SERVICE) {
195 warnx ("syslog/udp: unknown service"); /* not fatal */
196 error = getaddrinfo(host, "514", &hints, &res);
199 errx(1, "%s: %s", gai_strerror(error), host);
200 /* count max number of sockets we may open */
201 for (maxs = 0, r = res; r; r = r->ai_next, maxs++);
202 socks = malloc(maxs * sizeof(struct socks));
204 errx(1, "couldn't allocate memory for sockets");
205 for (r = res; r; r = r->ai_next) {
206 sock = socket(r->ai_family, r->ai_socktype,
210 memcpy(&socks[nsock].addr, r->ai_addr, r->ai_addrlen);
211 socks[nsock].addrlen = r->ai_addrlen;
212 socks[nsock++].sock = sock;
219 if ((len = asprintf(&line, "<%d>%s", pri, buf)) == -1)
222 for (i = 0; i < nsock; ++i) {
223 lsent = sendto(socks[i].sock, line, len, 0,
224 (struct sockaddr *)&socks[i].addr,
226 if (lsent == len && !send_to_all)
236 * Decode a symbolic name to a numeric value
245 for (save = s; *s && *s != '.'; ++s);
248 fac = decode(save, facilitynames);
250 errx(1, "unknown facility name: %s", save);
257 lev = decode(s, prioritynames);
259 errx(1, "unknown priority name: %s", save);
260 return ((lev & LOG_PRIMASK) | (fac & LOG_FACMASK));
264 decode(name, codetab)
273 for (c = codetab; c->c_name; c++)
274 if (!strcasecmp(name, c->c_name))
283 (void)fprintf(stderr, "usage: %s\n",
284 "logger [-46Ais] [-f file] [-h host] [-p pri] [-t tag] [message ...]"