1 /* $NetBSD: logger.c,v 1.4 1994/12/22 06:27:00 jtc 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. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by the University of 18 * California, Berkeley and its contributors. 19 * 4. Neither the name of the University nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 */ 35 36 #ifndef lint 37 static char copyright[] = 38 "@(#) Copyright (c) 1983, 1993\n\ 39 The Regents of the University of California. All rights reserved.\n"; 40 #endif /* not lint */ 41 42 #ifndef lint 43 #if 0 44 static char sccsid[] = "@(#)logger.c 8.1 (Berkeley) 6/6/93"; 45 #endif 46 static char rcsid[] = "$NetBSD: logger.c,v 1.4 1994/12/22 06:27:00 jtc Exp $"; 47 #endif /* not lint */ 48 49 #include <errno.h> 50 #include <unistd.h> 51 #include <stdlib.h> 52 #include <stdio.h> 53 #include <ctype.h> 54 #include <string.h> 55 56 #define SYSLOG_NAMES 57 #include <syslog.h> 58 59 int decode __P((char *, CODE *)); 60 int pencode __P((char *)); 61 void usage __P((void)); 62 63 /* 64 * logger -- read and log utility 65 * 66 * Reads from an input and arranges to write the result on the system 67 * log. 68 */ 69 int 70 main(argc, argv) 71 int argc; 72 char *argv[]; 73 { 74 int ch, logflags, pri; 75 char *tag, buf[1024]; 76 77 tag = NULL; 78 pri = LOG_NOTICE; 79 logflags = 0; 80 while ((ch = getopt(argc, argv, "f:ip:st:")) != EOF) 81 switch((char)ch) { 82 case 'f': /* file to log */ 83 if (freopen(optarg, "r", stdin) == NULL) { 84 (void)fprintf(stderr, "logger: %s: %s.\n", 85 optarg, strerror(errno)); 86 exit(1); 87 } 88 break; 89 case 'i': /* log process id also */ 90 logflags |= LOG_PID; 91 break; 92 case 'p': /* priority */ 93 pri = pencode(optarg); 94 break; 95 case 's': /* log to standard error */ 96 logflags |= LOG_PERROR; 97 break; 98 case 't': /* tag */ 99 tag = optarg; 100 break; 101 case '?': 102 default: 103 usage(); 104 } 105 argc -= optind; 106 argv += optind; 107 108 /* setup for logging */ 109 openlog(tag ? tag : getlogin(), logflags, 0); 110 (void) fclose(stdout); 111 112 /* log input line if appropriate */ 113 if (argc > 0) { 114 register char *p, *endp; 115 int len; 116 117 for (p = buf, endp = buf + sizeof(buf) - 2; *argv;) { 118 len = strlen(*argv); 119 if (p + len > endp && p > buf) { 120 syslog(pri, "%s", buf); 121 p = buf; 122 } 123 if (len > sizeof(buf) - 1) 124 syslog(pri, "%s", *argv++); 125 else { 126 if (p != buf) 127 *p++ = ' '; 128 bcopy(*argv++, p, len); 129 *(p += len) = '\0'; 130 } 131 } 132 if (p != buf) 133 syslog(pri, "%s", buf); 134 } else 135 while (fgets(buf, sizeof(buf), stdin) != NULL) 136 syslog(pri, "%s", buf); 137 exit(0); 138 } 139 140 /* 141 * Decode a symbolic name to a numeric value 142 */ 143 int 144 pencode(s) 145 register char *s; 146 { 147 char *save; 148 int fac, lev; 149 150 for (save = s; *s && *s != '.'; ++s); 151 if (*s) { 152 *s = '\0'; 153 fac = decode(save, facilitynames); 154 if (fac < 0) { 155 (void)fprintf(stderr, 156 "logger: unknown facility name: %s.\n", save); 157 exit(1); 158 } 159 *s++ = '.'; 160 } 161 else { 162 fac = 0; 163 s = save; 164 } 165 lev = decode(s, prioritynames); 166 if (lev < 0) { 167 (void)fprintf(stderr, 168 "logger: unknown priority name: %s.\n", save); 169 exit(1); 170 } 171 return ((lev & LOG_PRIMASK) | (fac & LOG_FACMASK)); 172 } 173 174 int 175 decode(name, codetab) 176 char *name; 177 CODE *codetab; 178 { 179 register CODE *c; 180 181 if (isdigit(*name)) 182 return (atoi(name)); 183 184 for (c = codetab; c->c_name; c++) 185 if (!strcasecmp(name, c->c_name)) 186 return (c->c_val); 187 188 return (-1); 189 } 190 191 void 192 usage() 193 { 194 (void)fprintf(stderr, 195 "logger: [-is] [-f file] [-p pri] [-t tag] [ message ... ]\n"); 196 exit(1); 197 } 198