+/* vi: set sw=4 ts=4: */
/*
* Mini logger implementation for busybox
*
- * Copyright (C) 1999 by Lineo, inc.
- * Written by Erik Andersen <andersen@lineo.com>, <andersee@debian.org>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ * Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org>
*
+ * Licensed under GPLv2 or later, see file LICENSE in this source tree.
*/
+//config:config LOGGER
+//config: bool "logger (6.3 kb)"
+//config: default y
+//config: select FEATURE_SYSLOG
+//config: help
+//config: The logger utility allows you to send arbitrary text
+//config: messages to the system log (i.e. the 'syslogd' utility) so
+//config: they can be logged. This is generally used to help locate
+//config: problems that occur within programs and scripts.
+
+//applet:IF_LOGGER(APPLET(logger, BB_DIR_USR_BIN, BB_SUID_DROP))
+
+//kbuild:lib-$(CONFIG_LOGGER) += syslogd_and_logger.o
+
+//usage:#define logger_trivial_usage
+//usage: "[OPTIONS] [MESSAGE]"
+//usage:#define logger_full_usage "\n\n"
+//usage: "Write MESSAGE (or stdin) to syslog\n"
+//usage: "\n -s Log to stderr as well as the system log"
+//usage: "\n -t TAG Log using the specified tag (defaults to user name)"
+//usage: "\n -p PRIO Priority (numeric or facility.level pair)"
+//usage:
+//usage:#define logger_example_usage
+//usage: "$ logger \"hello\"\n"
-#include "internal.h"
-#include <stdio.h>
-#include <sys/socket.h>
-#include <sys/un.h>
-#include <unistd.h>
-#include <time.h>
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <fcntl.h>
-#include <signal.h>
-#include <ctype.h>
-#include <netdb.h>
-
-#if !defined BB_SYSLOGD
-
+/*
+ * Done in syslogd_and_logger.c:
+#include "libbb.h"
#define SYSLOG_NAMES
-#include <sys/syslog.h>
+#define SYSLOG_NAMES_CONST
+#include <syslog.h>
+*/
-#else
-/* We have to do this since the header file defines static
- * structues. Argh.... bad libc, bad, bad...
- */
-#include <sys/syslog.h>
-typedef struct _code {
- char *c_name;
- int c_val;
-} CODE;
-extern CODE prioritynames[];
-extern CODE facilitynames[];
-#endif
-
-static const char logger_usage[] =
- "logger [OPTION]... [MESSAGE]\n\n"
- "Write MESSAGE to the system log. If MESSAGE is '-', log stdin.\n\n"
- "Options:\n"
- "\t-s\tLog to stderr as well as the system log.\n"
- "\t-p\tEnter the message with the specified priority.\n"
- "\t\tThis may be numerical or a ``facility.level'' pair.\n";
-
-
-/* Decode a symbolic name to a numeric value
+/* Decode a symbolic name to a numeric value
* this function is based on code
* Copyright (c) 1983, 1993
* The Regents of the University of California. All rights reserved.
+ *
+ * Original copyright notice is retained at the end of this file.
*/
-static int
-decode(char* name, CODE* codetab)
+static int decode(char *name, const CODE *codetab)
{
- CODE *c;
+ const CODE *c;
- if (isdigit(*name))
- return (atoi(name));
- for (c = codetab; c->c_name; c++) {
- if (!strcasecmp(name, c->c_name)) {
- return (c->c_val);
+ if (isdigit(*name))
+ return atoi(name);
+ for (c = codetab; c->c_name; c++) {
+ if (!strcasecmp(name, c->c_name)) {
+ return c->c_val;
+ }
}
- }
- return (-1);
+ return -1;
}
-/* Decode a symbolic name to a numeric value
+/* Decode a symbolic name to a numeric value
* this function is based on code
* Copyright (c) 1983, 1993
* The Regents of the University of California. All rights reserved.
+ *
+ * Original copyright notice is retained at the end of this file.
*/
-static int
-pencode(char* s)
+static int pencode(char *s)
{
- char *save;
- int lev, fac=LOG_USER;
-
- for (save = s; *s && *s != '.'; ++s);
- if (*s) {
- *s = '\0';
- fac = decode(save, facilitynames);
- if (fac < 0) {
- fprintf(stderr, "unknown facility name: %s\n", save);
- exit( FALSE);
+ char *save;
+ int lev, fac = LOG_USER;
+
+ for (save = s; *s && *s != '.'; ++s)
+ ;
+ if (*s) {
+ *s = '\0';
+ fac = decode(save, bb_facilitynames);
+ if (fac < 0)
+ bb_error_msg_and_die("unknown %s name: %s", "facility", save);
+ *s++ = '.';
+ } else {
+ s = save;
}
- *s++ = '.';
- }
- else {
- s = save;
- }
- lev = decode(s, prioritynames);
- if (lev < 0) {
- fprintf(stderr, "unknown priority name: %s\n", save);
- exit( FALSE);
- }
- return ((lev & LOG_PRIMASK) | (fac & LOG_FACMASK));
+ lev = decode(s, bb_prioritynames);
+ if (lev < 0)
+ bb_error_msg_and_die("unknown %s name: %s", "priority", save);
+ return ((lev & LOG_PRIMASK) | (fac & LOG_FACMASK));
}
+#define strbuf bb_common_bufsiz1
-extern int logger_main(int argc, char **argv)
+int logger_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
+int logger_main(int argc UNUSED_PARAM, char **argv)
{
- struct sockaddr_un sunx;
- int fd, pri = LOG_USER|LOG_NOTICE;
- int fromStdinFlag=FALSE;
- int toStdErrFlag=FALSE;
- int stopLookingAtMeLikeThat=FALSE;
- char *message, buf[1024], buf1[1024];
- time_t now;
- size_t addrLength;
-
- /* Parse any options */
- while (--argc > 0 && **(++argv) == '-') {
- if (*((*argv)+1) == '\0') {
- fromStdinFlag=TRUE;
- }
- stopLookingAtMeLikeThat=FALSE;
- while (*(++(*argv)) && stopLookingAtMeLikeThat==FALSE) {
- switch (**argv) {
- case 's':
- toStdErrFlag = TRUE;
- break;
- case 'p':
- if (--argc == 0) {
- usage(logger_usage);
+ char *str_p, *str_t;
+ int opt;
+ int i = 0;
+
+ setup_common_bufsiz();
+
+ /* Fill out the name string early (may be overwritten later) */
+ str_t = uid2uname_utoa(geteuid());
+
+ /* Parse any options */
+ opt = getopt32(argv, "p:st:", &str_p, &str_t);
+
+ if (opt & 0x2) /* -s */
+ i |= LOG_PERROR;
+ //if (opt & 0x4) /* -t */
+ openlog(str_t, i, 0);
+ i = LOG_USER | LOG_NOTICE;
+ if (opt & 0x1) /* -p */
+ i = pencode(str_p);
+
+ argv += optind;
+ if (!argv[0]) {
+ while (fgets(strbuf, COMMON_BUFSIZE, stdin)) {
+ if (strbuf[0]
+ && NOT_LONE_CHAR(strbuf, '\n')
+ ) {
+ /* Neither "" nor "\n" */
+ syslog(i, "%s", strbuf);
+ }
}
- pri = pencode(*(++argv));
- stopLookingAtMeLikeThat=TRUE;
- break;
- default:
- usage(logger_usage);
- }
- }
- }
-
- if (fromStdinFlag==TRUE) {
- /* read from stdin */
- int c, i=0;
- while ((c = getc(stdin)) != EOF && i<sizeof(buf1)) {
- buf1[i++]=c;
- }
- message=buf1;
- } else {
- if (argc>=1) {
- message=*argv;
} else {
- fprintf(stderr, "No message\n");
- exit( FALSE);
+ char *message = NULL;
+ int len = 0;
+ int pos = 0;
+ do {
+ len += strlen(*argv) + 1;
+ message = xrealloc(message, len + 1);
+ sprintf(message + pos, " %s", *argv),
+ pos = len;
+ } while (*++argv);
+ syslog(i, "%s", message + 1); /* skip leading " " */
}
- }
- memset(&sunx, 0, sizeof(sunx));
- sunx.sun_family = AF_UNIX; /* Unix domain socket */
- strncpy(sunx.sun_path, _PATH_LOG, sizeof(sunx.sun_path));
- if ((fd = socket(PF_UNIX, SOCK_STREAM, 0)) < 0 ) {
- perror("Couldn't obtain descriptor for socket " _PATH_LOG);
- exit( FALSE);
- }
-
- addrLength = sizeof(sunx.sun_family) + strlen(sunx.sun_path);
-
- if (connect(fd, (struct sockaddr *) &sunx, addrLength)) {
- perror("Could not connect to socket " _PATH_LOG);
- exit( FALSE);
- }
-
- time(&now);
- snprintf (buf, sizeof(buf), "<%d>%.15s %s", pri, ctime(&now)+4, message);
-
- if (toStdErrFlag==TRUE)
- fprintf(stderr, "%s\n", buf);
-
- write( fd, buf, strlen(buf)+1);
-
- close(fd);
- exit( TRUE);
+ closelog();
+ return EXIT_SUCCESS;
}
+/* Clean up. Needed because we are included from syslogd_and_logger.c */
+#undef strbuf
+
+/*-
+ * Copyright (c) 1983, 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ * This is the original license statement for the decode and pencode functions.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * 3. BSD Advertising Clause omitted per the July 22, 1999 licensing change
+ * ftp://ftp.cs.berkeley.edu/pub/4bsd/README.Impt.License.Change
+ *
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ''AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
projects / oweals / busybox.git / blobdiff