1 /* vi: set sw=4 ts=4: */
3 * Mini logger implementation for busybox
5 * Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org>
7 * Licensed under GPLv2 or later, see file LICENSE in this source tree.
10 //config: bool "logger (6.4 kb)"
12 //config: select FEATURE_SYSLOG
14 //config: The logger utility allows you to send arbitrary text
15 //config: messages to the system log (i.e. the 'syslogd' utility) so
16 //config: they can be logged. This is generally used to help locate
17 //config: problems that occur within programs and scripts.
19 //applet:IF_LOGGER(APPLET(logger, BB_DIR_USR_BIN, BB_SUID_DROP))
21 //kbuild:lib-$(CONFIG_LOGGER) += syslogd_and_logger.o
23 //usage:#define logger_trivial_usage
24 //usage: "[OPTIONS] [MESSAGE]"
25 //usage:#define logger_full_usage "\n\n"
26 //usage: "Write MESSAGE (or stdin) to syslog\n"
27 //usage: "\n -s Log to stderr as well as the system log"
28 //usage: "\n -t TAG Log using the specified tag (defaults to user name)"
29 //usage: "\n -p PRIO Priority (numeric or facility.level pair)"
31 //usage:#define logger_example_usage
32 //usage: "$ logger \"hello\"\n"
35 * Done in syslogd_and_logger.c:
38 #define SYSLOG_NAMES_CONST
42 /* Decode a symbolic name to a numeric value
43 * this function is based on code
44 * Copyright (c) 1983, 1993
45 * The Regents of the University of California. All rights reserved.
47 * Original copyright notice is retained at the end of this file.
49 static int decode(char *name, const CODE *codetab)
55 for (c = codetab; c->c_name; c++) {
56 if (!strcasecmp(name, c->c_name)) {
64 /* Decode a symbolic name to a numeric value
65 * this function is based on code
66 * Copyright (c) 1983, 1993
67 * The Regents of the University of California. All rights reserved.
69 * Original copyright notice is retained at the end of this file.
71 static int pencode(char *s)
74 int lev, fac = LOG_USER;
76 for (save = s; *s && *s != '.'; ++s)
80 fac = decode(save, bb_facilitynames);
82 bb_error_msg_and_die("unknown %s name: %s", "facility", save);
87 lev = decode(s, bb_prioritynames);
89 bb_error_msg_and_die("unknown %s name: %s", "priority", save);
90 return ((lev & LOG_PRIMASK) | (fac & LOG_FACMASK));
93 #define strbuf bb_common_bufsiz1
95 int logger_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
96 int logger_main(int argc UNUSED_PARAM, char **argv)
102 setup_common_bufsiz();
104 /* Fill out the name string early (may be overwritten later) */
105 str_t = uid2uname_utoa(geteuid());
107 /* Parse any options */
108 opt = getopt32(argv, "p:st:", &str_p, &str_t);
110 if (opt & 0x2) /* -s */
112 //if (opt & 0x4) /* -t */
113 openlog(str_t, i, 0);
114 i = LOG_USER | LOG_NOTICE;
115 if (opt & 0x1) /* -p */
120 while (fgets(strbuf, COMMON_BUFSIZE, stdin)) {
122 && NOT_LONE_CHAR(strbuf, '\n')
124 /* Neither "" nor "\n" */
125 syslog(i, "%s", strbuf);
129 char *message = NULL;
133 len += strlen(*argv) + 1;
134 message = xrealloc(message, len + 1);
135 sprintf(message + pos, " %s", *argv),
138 syslog(i, "%s", message + 1); /* skip leading " " */
145 /* Clean up. Needed because we are included from syslogd_and_logger.c */
149 * Copyright (c) 1983, 1993
150 * The Regents of the University of California. All rights reserved.
152 * This is the original license statement for the decode and pencode functions.
154 * Redistribution and use in source and binary forms, with or without
155 * modification, are permitted provided that the following conditions
157 * 1. Redistributions of source code must retain the above copyright
158 * notice, this list of conditions and the following disclaimer.
159 * 2. Redistributions in binary form must reproduce the above copyright
160 * notice, this list of conditions and the following disclaimer in the
161 * documentation and/or other materials provided with the distribution.
163 * 3. BSD Advertising Clause omitted per the July 22, 1999 licensing change
164 * ftp://ftp.cs.berkeley.edu/pub/4bsd/README.Impt.License.Change
166 * 4. Neither the name of the University nor the names of its contributors
167 * may be used to endorse or promote products derived from this software
168 * without specific prior written permission.
170 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ''AS IS'' AND
171 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
172 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
173 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
174 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
175 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
176 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
177 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
178 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
179 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF