1 /* $NetBSD: logger.c,v 1.9 2003/08/07 11:14:23 agc Exp $ */ 2 3 /* 4 * Copyright (c) 1983, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. Neither the name of the University nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 */ 31 32 #include <sys/cdefs.h> 33 #ifndef lint 34 __COPYRIGHT("@(#) Copyright (c) 1983, 1993\n\ 35 The Regents of the University of California. All rights reserved.\n"); 36 #endif /* not lint */ 37 38 #ifndef lint 39 #if 0 40 static char sccsid[] = "@(#)logger.c 8.1 (Berkeley) 6/6/93"; 41 #endif 42 __RCSID("$NetBSD: logger.c,v 1.9 2003/08/07 11:14:23 agc Exp $"); 43 #endif /* not lint */ 44 45 #include <errno.h> 46 #include <unistd.h> 47 #include <stdlib.h> 48 #include <stdio.h> 49 #include <ctype.h> 50 #include <string.h> 51 #include <err.h> 52 53 #define SYSLOG_NAMES 54 #include <syslog.h> 55 56 int decode(const char *, const CODE *); 57 int pencode(char *); 58 int main(int, char **); 59 void usage(void); 60 61 /* 62 * logger -- read and log utility 63 * 64 * Reads from an input and arranges to write the result on the system 65 * log. 66 */ 67 int 68 main(int argc, char *argv[]) 69 { 70 int ch, logflags, pri; 71 const char *tag; 72 char buf[1024]; 73 74 tag = NULL; 75 pri = LOG_NOTICE; 76 logflags = 0; 77 while ((ch = getopt(argc, argv, "f:ip:st:")) != -1) 78 switch((char)ch) { 79 case 'f': /* file to log */ 80 if (freopen(optarg, "r", stdin) == NULL) 81 err(EXIT_FAILURE, "%s", optarg); 82 break; 83 case 'i': /* log process id also */ 84 logflags |= LOG_PID; 85 break; 86 case 'p': /* priority */ 87 pri = pencode(optarg); 88 break; 89 case 's': /* log to standard error */ 90 logflags |= LOG_PERROR; 91 break; 92 case 't': /* tag */ 93 tag = optarg; 94 break; 95 case '?': 96 default: 97 usage(); 98 } 99 argc -= optind; 100 argv += optind; 101 102 /* setup for logging */ 103 openlog(tag != NULL ? tag : getlogin(), logflags, 0); 104 (void)fclose(stdout); 105 106 /* log input line if appropriate */ 107 if (argc > 0) { 108 char *p, *endp; 109 int len; 110 111 for (p = buf, endp = buf + sizeof(buf) - 2; *argv != NULL;) { 112 len = strlen(*argv); 113 if (p + len > endp && p > buf) { 114 syslog(pri, "%s", buf); 115 p = buf; 116 } 117 if (len > sizeof(buf) - 1) 118 syslog(pri, "%s", *argv++); 119 else { 120 if (p != buf) 121 *p++ = ' '; 122 memmove(p, *argv++, len); 123 *(p += len) = '\0'; 124 } 125 } 126 if (p != buf) 127 syslog(pri, "%s", buf); 128 } else 129 while (fgets(buf, sizeof(buf), stdin) != NULL) 130 syslog(pri, "%s", buf); 131 132 exit(EXIT_SUCCESS); 133 /* NOTREACHED */ 134 } 135 136 /* 137 * Decode a symbolic name to a numeric value 138 */ 139 int 140 pencode(char *s) 141 { 142 char *save; 143 int fac, lev; 144 145 for (save = s; *s != '\0' && *s != '.'; ++s) 146 ; 147 if (*s != '\0') { 148 *s = '\0'; 149 fac = decode(save, facilitynames); 150 if (fac < 0) 151 errx(EXIT_FAILURE, "unknown facility name: %s", save); 152 *s++ = '.'; 153 } else { 154 fac = 0; 155 s = save; 156 } 157 lev = decode(s, prioritynames); 158 if (lev < 0) 159 errx(EXIT_FAILURE, "unknown priority name: %s", s); 160 return ((lev & LOG_PRIMASK) | (fac & LOG_FACMASK)); 161 } 162 163 int 164 decode(const char *name, const CODE *codetab) 165 { 166 const CODE *c; 167 168 if (isdigit((unsigned char)*name)) 169 return (atoi(name)); 170 171 for (c = codetab; c->c_name != NULL; c++) 172 if (strcasecmp(name, c->c_name) == 0) 173 return (c->c_val); 174 175 return (-1); 176 } 177 178 void 179 usage(void) 180 { 181 182 (void)fprintf(stderr, 183 "%s: [-is] [-f file] [-p pri] [-t tag] [ message ... ]\n", 184 getprogname()); 185 exit(EXIT_FAILURE); 186 } 187