Annotation of src/usr.bin/logger/logger.c, Revision 1.7
1.7 ! deraadt 1: /* $OpenBSD: logger.c,v 1.6 2003/06/03 02:56:10 millert Exp $ */
1.1 deraadt 2: /* $NetBSD: logger.c,v 1.4 1994/12/22 06:27:00 jtc Exp $ */
3:
4: /*
5: * Copyright (c) 1983, 1993
6: * The Regents of the University of California. All rights reserved.
7: *
8: * Redistribution and use in source and binary forms, with or without
9: * modification, are permitted provided that the following conditions
10: * are met:
11: * 1. Redistributions of source code must retain the above copyright
12: * notice, this list of conditions and the following disclaimer.
13: * 2. Redistributions in binary form must reproduce the above copyright
14: * notice, this list of conditions and the following disclaimer in the
15: * documentation and/or other materials provided with the distribution.
1.6 millert 16: * 3. Neither the name of the University nor the names of its contributors
1.1 deraadt 17: * may be used to endorse or promote products derived from this software
18: * without specific prior written permission.
19: *
20: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
21: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
24: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30: * SUCH DAMAGE.
31: */
32:
33: #ifndef lint
34: static char copyright[] =
35: "@(#) Copyright (c) 1983, 1993\n\
36: The Regents of the University of California. All rights reserved.\n";
37: #endif /* not lint */
38:
39: #ifndef lint
40: #if 0
41: static char sccsid[] = "@(#)logger.c 8.1 (Berkeley) 6/6/93";
42: #endif
1.7 ! deraadt 43: static char rcsid[] = "$OpenBSD: logger.c,v 1.6 2003/06/03 02:56:10 millert Exp $";
1.1 deraadt 44: #endif /* not lint */
45:
46: #include <errno.h>
47: #include <unistd.h>
48: #include <stdlib.h>
49: #include <stdio.h>
50: #include <ctype.h>
51: #include <string.h>
52:
53: #define SYSLOG_NAMES
54: #include <syslog.h>
55:
1.5 millert 56: int decode(char *, CODE *);
57: int pencode(char *);
58: void usage(void);
1.1 deraadt 59:
60: /*
61: * logger -- read and log utility
62: *
63: * Reads from an input and arranges to write the result on the system
64: * log.
65: */
66: int
1.7 ! deraadt 67: main(int argc, char *argv[])
1.1 deraadt 68: {
69: int ch, logflags, pri;
70: char *tag, buf[1024];
71:
72: tag = NULL;
73: pri = LOG_NOTICE;
74: logflags = 0;
1.3 millert 75: while ((ch = getopt(argc, argv, "f:ip:st:")) != -1)
1.1 deraadt 76: switch((char)ch) {
77: case 'f': /* file to log */
78: if (freopen(optarg, "r", stdin) == NULL) {
79: (void)fprintf(stderr, "logger: %s: %s.\n",
80: optarg, strerror(errno));
81: exit(1);
82: }
83: break;
84: case 'i': /* log process id also */
85: logflags |= LOG_PID;
86: break;
87: case 'p': /* priority */
88: pri = pencode(optarg);
89: break;
90: case 's': /* log to standard error */
91: logflags |= LOG_PERROR;
92: break;
93: case 't': /* tag */
94: tag = optarg;
95: break;
96: case '?':
97: default:
98: usage();
99: }
100: argc -= optind;
101: argv += optind;
102:
103: /* setup for logging */
104: openlog(tag ? tag : getlogin(), logflags, 0);
105: (void) fclose(stdout);
106:
107: /* log input line if appropriate */
108: if (argc > 0) {
1.4 mpech 109: char *p, *endp;
1.1 deraadt 110: int len;
111:
112: for (p = buf, endp = buf + sizeof(buf) - 2; *argv;) {
113: len = strlen(*argv);
114: if (p + len > endp && p > buf) {
115: syslog(pri, "%s", buf);
116: p = buf;
117: }
118: if (len > sizeof(buf) - 1)
119: syslog(pri, "%s", *argv++);
120: else {
121: if (p != buf)
122: *p++ = ' ';
123: bcopy(*argv++, p, len);
124: *(p += len) = '\0';
125: }
126: }
127: if (p != buf)
128: syslog(pri, "%s", buf);
129: } else
130: while (fgets(buf, sizeof(buf), stdin) != NULL)
131: syslog(pri, "%s", buf);
132: exit(0);
133: }
134:
135: /*
136: * Decode a symbolic name to a numeric value
137: */
138: int
1.7 ! deraadt 139: pencode(char *s)
1.1 deraadt 140: {
141: char *save;
142: int fac, lev;
143:
144: for (save = s; *s && *s != '.'; ++s);
145: if (*s) {
146: *s = '\0';
147: fac = decode(save, facilitynames);
148: if (fac < 0) {
149: (void)fprintf(stderr,
150: "logger: unknown facility name: %s.\n", save);
151: exit(1);
152: }
153: *s++ = '.';
154: }
155: else {
156: fac = 0;
157: s = save;
158: }
159: lev = decode(s, prioritynames);
160: if (lev < 0) {
161: (void)fprintf(stderr,
162: "logger: unknown priority name: %s.\n", save);
163: exit(1);
164: }
165: return ((lev & LOG_PRIMASK) | (fac & LOG_FACMASK));
166: }
167:
168: int
1.7 ! deraadt 169: decode(char *name, CODE *codetab)
1.1 deraadt 170: {
1.4 mpech 171: CODE *c;
1.1 deraadt 172:
173: if (isdigit(*name))
174: return (atoi(name));
175:
176: for (c = codetab; c->c_name; c++)
177: if (!strcasecmp(name, c->c_name))
178: return (c->c_val);
179:
180: return (-1);
181: }
182:
183: void
1.7 ! deraadt 184: usage(void)
1.1 deraadt 185: {
186: (void)fprintf(stderr,
187: "logger: [-is] [-f file] [-p pri] [-t tag] [ message ... ]\n");
188: exit(1);
189: }
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