source: branches/3.2/mindi-busybox/sysklogd/logger.c @ 3232

Last change on this file since 3232 was 3232, checked in by bruno, 5 years ago
  • Update mindi-busybox to 1.21.1
File size: 4.9 KB
Line 
1/* vi: set sw=4 ts=4: */
2/*
3 * Mini logger implementation for busybox
4 *
5 * Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org>
6 *
7 * Licensed under GPLv2 or later, see file LICENSE in this source tree.
8 */
9
10//usage:#define logger_trivial_usage
11//usage:       "[OPTIONS] [MESSAGE]"
12//usage:#define logger_full_usage "\n\n"
13//usage:       "Write MESSAGE (or stdin) to syslog\n"
14//usage:     "\n    -s  Log to stderr as well as the system log"
15//usage:     "\n    -t TAG  Log using the specified tag (defaults to user name)"
16//usage:     "\n    -p PRIO Priority (numeric or facility.level pair)"
17//usage:
18//usage:#define logger_example_usage
19//usage:       "$ logger \"hello\"\n"
20
21/*
22 * Done in syslogd_and_logger.c:
23#include "libbb.h"
24#define SYSLOG_NAMES
25#define SYSLOG_NAMES_CONST
26#include <syslog.h>
27*/
28
29/* Decode a symbolic name to a numeric value
30 * this function is based on code
31 * Copyright (c) 1983, 1993
32 * The Regents of the University of California.  All rights reserved.
33 *
34 * Original copyright notice is retained at the end of this file.
35 */
36static int decode(char *name, const CODE *codetab)
37{
38    const CODE *c;
39
40    if (isdigit(*name))
41        return atoi(name);
42    for (c = codetab; c->c_name; c++) {
43        if (!strcasecmp(name, c->c_name)) {
44            return c->c_val;
45        }
46    }
47
48    return -1;
49}
50
51/* Decode a symbolic name to a numeric value
52 * this function is based on code
53 * Copyright (c) 1983, 1993
54 * The Regents of the University of California.  All rights reserved.
55 *
56 * Original copyright notice is retained at the end of this file.
57 */
58static int pencode(char *s)
59{
60    char *save;
61    int lev, fac = LOG_USER;
62
63    for (save = s; *s && *s != '.'; ++s)
64        ;
65    if (*s) {
66        *s = '\0';
67        fac = decode(save, facilitynames);
68        if (fac < 0)
69            bb_error_msg_and_die("unknown %s name: %s", "facility", save);
70        *s++ = '.';
71    } else {
72        s = save;
73    }
74    lev = decode(s, prioritynames);
75    if (lev < 0)
76        bb_error_msg_and_die("unknown %s name: %s", "priority", save);
77    return ((lev & LOG_PRIMASK) | (fac & LOG_FACMASK));
78}
79
80#define strbuf bb_common_bufsiz1
81
82int logger_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
83int logger_main(int argc UNUSED_PARAM, char **argv)
84{
85    char *str_p, *str_t;
86    int opt;
87    int i = 0;
88
89    /* Fill out the name string early (may be overwritten later) */
90    str_t = uid2uname_utoa(geteuid());
91
92    /* Parse any options */
93    opt = getopt32(argv, "p:st:", &str_p, &str_t);
94
95    if (opt & 0x2) /* -s */
96        i |= LOG_PERROR;
97    //if (opt & 0x4) /* -t */
98    openlog(str_t, i, 0);
99    i = LOG_USER | LOG_NOTICE;
100    if (opt & 0x1) /* -p */
101        i = pencode(str_p);
102
103    argv += optind;
104    if (!argv[0]) {
105        while (fgets(strbuf, COMMON_BUFSIZE, stdin)) {
106            if (strbuf[0]
107             && NOT_LONE_CHAR(strbuf, '\n')
108            ) {
109                /* Neither "" nor "\n" */
110                syslog(i, "%s", strbuf);
111            }
112        }
113    } else {
114        char *message = NULL;
115        int len = 0;
116        int pos = 0;
117        do {
118            len += strlen(*argv) + 1;
119            message = xrealloc(message, len + 1);
120            sprintf(message + pos, " %s", *argv),
121            pos = len;
122        } while (*++argv);
123        syslog(i, "%s", message + 1); /* skip leading " " */
124    }
125
126    closelog();
127    return EXIT_SUCCESS;
128}
129
130/* Clean up. Needed because we are included from syslogd_and_logger.c */
131#undef strbuf
132
133/*-
134 * Copyright (c) 1983, 1993
135 * The Regents of the University of California.  All rights reserved.
136 *
137 * This is the original license statement for the decode and pencode functions.
138 *
139 * Redistribution and use in source and binary forms, with or without
140 * modification, are permitted provided that the following conditions
141 * are met:
142 * 1. Redistributions of source code must retain the above copyright
143 *    notice, this list of conditions and the following disclaimer.
144 * 2. Redistributions in binary form must reproduce the above copyright
145 *    notice, this list of conditions and the following disclaimer in the
146 *    documentation and/or other materials provided with the distribution.
147 *
148 * 3. BSD Advertising Clause omitted per the July 22, 1999 licensing change
149 *    ftp://ftp.cs.berkeley.edu/pub/4bsd/README.Impt.License.Change
150 *
151 * 4. Neither the name of the University nor the names of its contributors
152 *    may be used to endorse or promote products derived from this software
153 *    without specific prior written permission.
154 *
155 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
156 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
157 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
158 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
159 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
160 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
161 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
162 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
163 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
164 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
165 * SUCH DAMAGE.
166 */
Note: See TracBrowser for help on using the repository browser.