1 /* 2 * Copyright (c) 1983, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by the University of 16 * California, Berkeley and its contributors. 17 * 4. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 */ 33 34 #ifndef lint 35 static char copyright[] = 36 "@(#) Copyright (c) 1983, 1993\n\ 37 The Regents of the University of California. All rights reserved.\n"; 38 #endif /* not lint */ 39 40 #ifndef lint 41 static char sccsid[] = "@(#)logger.c 8.1 (Berkeley) 6/6/93"; 42 #endif /* not lint */ 43 44 #include <errno.h> 45 #include <unistd.h> 46 #include <stdlib.h> 47 #include <stdio.h> 48 #include <ctype.h> 49 #include <string.h> 50 51 #define SYSLOG_NAMES 52 #include <syslog.h> 53 54 int decode __P((char *, CODE *)); 55 int pencode __P((char *)); 56 void usage __P((void)); 57 58 /* 59 * logger -- read and log utility 60 * 61 * Reads from an input and arranges to write the result on the system 62 * log. 63 */ 64 int 65 main(argc, argv) 66 int argc; 67 char *argv[]; 68 { 69 int ch, logflags, pri; 70 char *tag, buf[1024]; 71 72 tag = NULL; 73 pri = LOG_NOTICE; 74 logflags = 0; 75 while ((ch = getopt(argc, argv, "f:ip:st:")) != EOF) 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) { 109 register char *p, *endp; 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 139 pencode(s) 140 register char *s; 141 { 142 char *save; 143 int fac, lev; 144 145 for (save = s; *s && *s != '.'; ++s); 146 if (*s) { 147 *s = '\0'; 148 fac = decode(save, facilitynames); 149 if (fac < 0) { 150 (void)fprintf(stderr, 151 "logger: unknown facility name: %s.\n", save); 152 exit(1); 153 } 154 *s++ = '.'; 155 } 156 else { 157 fac = 0; 158 s = save; 159 } 160 lev = decode(s, prioritynames); 161 if (lev < 0) { 162 (void)fprintf(stderr, 163 "logger: unknown priority name: %s.\n", save); 164 exit(1); 165 } 166 return ((lev & LOG_PRIMASK) | (fac & LOG_FACMASK)); 167 } 168 169 int 170 decode(name, codetab) 171 char *name; 172 CODE *codetab; 173 { 174 register CODE *c; 175 176 if (isdigit(*name)) 177 return (atoi(name)); 178 179 for (c = codetab; c->c_name; c++) 180 if (!strcasecmp(name, c->c_name)) 181 return (c->c_val); 182 183 return (-1); 184 } 185 186 void 187 usage() 188 { 189 (void)fprintf(stderr, 190 "logger: [-is] [-f file] [-p pri] [-t tag] [ message ... ]\n"); 191 exit(1); 192 } 193