279 lines
7.0 KiB
C
279 lines
7.0 KiB
C
/*
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* Copyright (c) 1983, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* 1999-02-22 Arkadiusz Mi¶kiewicz <misiek@misiek.eu.org>
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* - added Native Language Support
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* Sun Mar 21 1999 - Arnaldo Carvalho de Melo <acme@conectiva.com.br>
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* - fixed strerr(errno) in gettext calls
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*/
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#include <errno.h>
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#include <unistd.h>
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#include <stdlib.h>
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#include <time.h>
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#include <stdio.h>
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#include <ctype.h>
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#include <string.h>
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#include <sys/types.h>
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#include <sys/socket.h>
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#include "nls.h"
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#define SYSLOG_NAMES
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#include <syslog.h>
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int decode __P((char *, CODE *));
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int pencode __P((char *));
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void usage __P((void));
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static int
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myopenlog(const char *sock) {
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int fd;
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static struct sockaddr s_addr; /* AF_UNIX address of local logger */
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s_addr.sa_family = AF_UNIX;
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(void)strncpy(s_addr.sa_data, sock, sizeof(s_addr.sa_data));
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if ((fd = socket(AF_UNIX, SOCK_STREAM, 0)) == -1) {
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printf ("socket: %s.\n", strerror(errno));
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exit (1);
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}
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if (connect(fd, &s_addr, sizeof(s_addr.sa_family)+strlen(s_addr.sa_data)) == -1) {
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printf ("connect: %s.\n", strerror(errno));
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exit (1);
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}
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return fd;
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}
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static void
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mysyslog(int fd, int logflags, int pri, char *tag, char *msg) {
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char buf[1000], pid[30], *cp, *tp;
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time_t now;
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if (fd > -1) {
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/* there was a gethostname call here, but its output was not used */
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/* avoid snprintf - it does not exist on ancient systems */
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if (logflags & LOG_PID)
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sprintf (pid, "[%d]", getpid());
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else
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pid[0] = 0;
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if (tag)
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cp = tag;
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else {
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cp = getlogin();
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if (!cp)
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cp = "<someone>";
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}
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(void)time(&now);
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tp = ctime(&now)+4;
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/* do snprintf by hand - ugly, but for once... */
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sprintf(buf, "<%d>%.15s %.200s%s: %.400s",
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pri, tp, cp, pid, msg);
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if (write(fd, buf, strlen(buf)+1) < 0)
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return; /* error */
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}
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}
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/*
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* logger -- read and log utility
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*
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* Reads from an input and arranges to write the result on the system
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* log.
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*/
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int
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main(int argc, char **argv) {
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int ch, logflags, pri;
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char *tag, buf[1024];
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char *usock = NULL;
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int LogSock = -1;
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setlocale(LC_ALL, "");
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bindtextdomain(PACKAGE, LOCALEDIR);
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textdomain(PACKAGE);
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tag = NULL;
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pri = LOG_NOTICE;
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logflags = 0;
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while ((ch = getopt(argc, argv, "f:ip:st:u:")) != EOF)
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switch((char)ch) {
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case 'f': /* file to log */
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if (freopen(optarg, "r", stdin) == NULL) {
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int errsv = errno;
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(void)fprintf(stderr, _("logger: %s: %s.\n"),
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optarg, strerror(errsv));
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exit(1);
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}
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break;
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case 'i': /* log process id also */
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logflags |= LOG_PID;
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break;
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case 'p': /* priority */
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pri = pencode(optarg);
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break;
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case 's': /* log to standard error */
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logflags |= LOG_PERROR;
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break;
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case 't': /* tag */
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tag = optarg;
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break;
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case 'u': /* unix socket */
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usock = optarg;
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break;
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case '?':
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default:
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usage();
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}
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argc -= optind;
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argv += optind;
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/* setup for logging */
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if (!usock)
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openlog(tag ? tag : getlogin(), logflags, 0);
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else
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LogSock = myopenlog(usock);
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(void) fclose(stdout);
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/* log input line if appropriate */
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if (argc > 0) {
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register char *p, *endp;
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int len;
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for (p = buf, endp = buf + sizeof(buf) - 2; *argv;) {
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len = strlen(*argv);
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if (p + len > endp && p > buf) {
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if (!usock)
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syslog(pri, "%s", buf);
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else
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mysyslog(LogSock, logflags, pri, tag, buf);
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p = buf;
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}
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if (len > sizeof(buf) - 1) {
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if (!usock)
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syslog(pri, "%s", *argv++);
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else
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mysyslog(LogSock, logflags, pri, tag, *argv++);
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} else {
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if (p != buf)
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*p++ = ' ';
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bcopy(*argv++, p, len);
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*(p += len) = '\0';
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}
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}
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if (p != buf) {
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if (!usock)
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syslog(pri, "%s", buf);
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else
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mysyslog(LogSock, logflags, pri, tag, buf);
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}
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} else
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while (fgets(buf, sizeof(buf), stdin) != NULL) {
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/* glibc is buggy and adds an additional newline,
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so we have to remove it here until glibc is fixed */
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int len = strlen(buf);
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if (len > 0 && buf[len - 1] == '\n')
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buf[len - 1] = '\0';
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if (!usock)
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syslog(pri, "%s", buf);
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else
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mysyslog(LogSock, logflags, pri, tag, buf);
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}
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if (!usock)
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closelog();
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else
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close(LogSock);
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exit(0);
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}
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/*
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* Decode a symbolic name to a numeric value
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*/
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int
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pencode(s)
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register char *s;
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{
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char *save;
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int fac, lev;
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for (save = s; *s && *s != '.'; ++s);
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if (*s) {
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*s = '\0';
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fac = decode(save, facilitynames);
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if (fac < 0) {
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(void)fprintf(stderr,
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_("logger: unknown facility name: %s.\n"), save);
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exit(1);
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}
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*s++ = '.';
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}
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else {
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fac = LOG_USER;
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s = save;
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}
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lev = decode(s, prioritynames);
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if (lev < 0) {
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(void)fprintf(stderr,
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_("logger: unknown priority name: %s.\n"), save);
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exit(1);
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}
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return ((lev & LOG_PRIMASK) | (fac & LOG_FACMASK));
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}
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int
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decode(name, codetab)
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char *name;
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CODE *codetab;
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{
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register CODE *c;
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if (isdigit(*name))
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return (atoi(name));
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for (c = codetab; c->c_name; c++)
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if (!strcasecmp(name, c->c_name))
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return (c->c_val);
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return (-1);
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}
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void
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usage()
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{
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(void)fprintf(stderr,
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_("usage: logger [-is] [-f file] [-p pri] [-t tag] [-u socket] [ message ... ]\n"));
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exit(1);
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}
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