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
33 * @(#) Copyright (c) 1983, 1993 The Regents of the University of California. All rights reserved.
34 * @(#)logger.c 8.1 (Berkeley) 6/6/93
35 * $FreeBSD: src/usr.bin/logger/logger.c,v 1.5.2.3 2001/09/06 17:38:57 ru Exp $
36 * $DragonFly: src/usr.bin/logger/logger.c,v 1.2 2003/06/17 04:29:28 dillon Exp $
39 #include <sys/types.h>
40 #include <sys/socket.h>
41 #include <netinet/in.h>
54 int decode __P((char *, CODE *));
55 int pencode __P((char *));
56 static void logmessage __P((int, char *, char *));
57 static void usage __P((void));
62 struct sockaddr_storage addr;
66 int family = PF_UNSPEC; /* protocol family (IPv4, IPv6 or both) */
68 int family = PF_INET; /* protocol family (IPv4 only) */
70 int send_to_all = 0; /* send message to all IPv4/IPv6 addresses */
73 * logger -- read and log utility
75 * Reads from an input and arranges to write the result on the system
83 int ch, logflags, pri;
84 char *tag, *host, buf[1024];
88 pri = LOG_USER | LOG_NOTICE;
91 while ((ch = getopt(argc, argv, "46Af:h:ip:st:")) != -1)
104 case 'f': /* file to log */
105 if (freopen(optarg, "r", stdin) == NULL)
106 err(1, "%s", optarg);
108 case 'h': /* hostname to deliver to */
111 case 'i': /* log process id also */
114 case 'p': /* priority */
115 pri = pencode(optarg);
117 case 's': /* log to standard error */
118 logflags |= LOG_PERROR;
130 /* setup for logging */
131 openlog(tag ? tag : getlogin(), logflags, 0);
132 (void) fclose(stdout);
134 /* log input line if appropriate */
136 register char *p, *endp;
139 for (p = buf, endp = buf + sizeof(buf) - 2; *argv;) {
141 if (p + len > endp && p > buf) {
142 logmessage(pri, host, buf);
145 if (len > sizeof(buf) - 1)
146 logmessage(pri, host, *argv++);
150 bcopy(*argv++, p, len);
155 logmessage(pri, host, buf);
157 while (fgets(buf, sizeof(buf), stdin) != NULL)
158 logmessage(pri, host, buf);
163 * Send the message to syslog, either on the local host, or on a remote host
166 logmessage(int pri, char *host, char *buf)
168 static struct socks *socks;
169 static int nsock = 0;
170 struct addrinfo hints, *res, *r;
172 int maxs, len, sock, error, i, lsent;
175 syslog(pri, "%s", buf);
179 if (nsock <= 0) { /* set up socket stuff */
180 /* resolve hostname */
181 memset(&hints, 0, sizeof(hints));
182 hints.ai_family = family;
183 hints.ai_socktype = SOCK_DGRAM;
184 error = getaddrinfo(host, "syslog", &hints, &res);
185 if (error == EAI_SERVICE) {
186 warnx ("syslog/udp: unknown service"); /* not fatal */
187 error = getaddrinfo(host, "514", &hints, &res);
190 errx(1, "%s: %s", gai_strerror(error), host);
191 /* count max number of sockets we may open */
192 for (maxs = 0, r = res; r; r = r->ai_next, maxs++);
193 socks = malloc(maxs * sizeof(struct socks));
195 errx(1, "couldn't allocate memory for sockets");
196 for (r = res; r; r = r->ai_next) {
197 sock = socket(r->ai_family, r->ai_socktype,
201 memcpy(&socks[nsock].addr, r->ai_addr, r->ai_addrlen);
202 socks[nsock].addrlen = r->ai_addrlen;
203 socks[nsock++].sock = sock;
210 if ((len = asprintf(&line, "<%d>%s", pri, buf)) == -1)
213 for (i = 0; i < nsock; ++i) {
214 lsent = sendto(socks[i].sock, line, len, 0,
215 (struct sockaddr *)&socks[i].addr,
217 if (lsent == len && !send_to_all)
227 * Decode a symbolic name to a numeric value
236 for (save = s; *s && *s != '.'; ++s);
239 fac = decode(save, facilitynames);
241 errx(1, "unknown facility name: %s", save);
248 lev = decode(s, prioritynames);
250 errx(1, "unknown priority name: %s", save);
251 return ((lev & LOG_PRIMASK) | (fac & LOG_FACMASK));
255 decode(name, codetab)
264 for (c = codetab; c->c_name; c++)
265 if (!strcasecmp(name, c->c_name))
274 (void)fprintf(stderr, "usage: %s\n",
275 "logger [-46Ais] [-f file] [-h host] [-p pri] [-t tag] [message ...]"