blob: 5a7027731481c90598dabdd36ba257eb81912d18
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 | */ |
36 | static 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 | */ |
58 | static 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 | |
82 | int logger_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE; |
83 | int 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 | */ |
167 |