1 /* $OpenBSD: log.c,v 1.4 2011/08/20 19:02:28 sthen Exp $ */ 2 3 /* 4 * Copyright (c) 2003, 2004 Henning Brauer <henning@openbsd.org> 5 * 6 * Permission to use, copy, modify, and distribute this software for any 7 * purpose with or without fee is hereby granted, provided that the above 8 * copyright notice and this permission notice appear in all copies. 9 * 10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 14 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 15 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 16 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 17 */ 18 19 #include <errno.h> 20 #include <stdarg.h> 21 #include <stdio.h> 22 #include <stdlib.h> 23 #include <string.h> 24 #include <syslog.h> 25 #include <unistd.h> 26 27 #include "ripd.h" 28 #include "log.h" 29 30 static const char * const procnames[] = { 31 "parent", 32 "ripe", 33 "rde" 34 }; 35 36 int debug; 37 int verbose; 38 39 void logit(int, const char *, ...); 40 41 void 42 log_init(int n_debug) 43 { 44 extern char *__progname; 45 46 debug = n_debug; 47 48 if (!debug) 49 openlog(__progname, LOG_PID | LOG_NDELAY, LOG_DAEMON); 50 51 tzset(); 52 } 53 54 void 55 log_verbose(int v) 56 { 57 verbose = v; 58 } 59 60 void 61 logit(int pri, const char *fmt, ...) 62 { 63 va_list ap; 64 65 va_start(ap, fmt); 66 vlog(pri, fmt, ap); 67 va_end(ap); 68 } 69 70 void 71 vlog(int pri, const char *fmt, va_list ap) 72 { 73 char *nfmt; 74 75 if (debug) { 76 /* best effort in out of mem situations */ 77 if (asprintf(&nfmt, "%s\n", fmt) == -1) { 78 vfprintf(stderr, fmt, ap); 79 fprintf(stderr, "\n"); 80 } else { 81 vfprintf(stderr, nfmt, ap); 82 free(nfmt); 83 } 84 fflush(stderr); 85 } else 86 vsyslog(pri, fmt, ap); 87 } 88 89 void 90 log_warn(const char *emsg, ...) 91 { 92 char *nfmt; 93 va_list ap; 94 95 /* best effort to even work in out of memory situations */ 96 if (emsg == NULL) 97 logit(LOG_CRIT, "%s", strerror(errno)); 98 else { 99 va_start(ap, emsg); 100 101 if (asprintf(&nfmt, "%s: %s", emsg, strerror(errno)) == -1) { 102 /* we tried it... */ 103 vlog(LOG_CRIT, emsg, ap); 104 logit(LOG_CRIT, "%s", strerror(errno)); 105 } else { 106 vlog(LOG_CRIT, nfmt, ap); 107 free(nfmt); 108 } 109 va_end(ap); 110 } 111 } 112 113 void 114 log_warnx(const char *emsg, ...) 115 { 116 va_list ap; 117 118 va_start(ap, emsg); 119 vlog(LOG_CRIT, emsg, ap); 120 va_end(ap); 121 } 122 123 void 124 log_info(const char *emsg, ...) 125 { 126 va_list ap; 127 128 va_start(ap, emsg); 129 vlog(LOG_INFO, emsg, ap); 130 va_end(ap); 131 } 132 133 void 134 log_debug(const char *emsg, ...) 135 { 136 va_list ap; 137 138 if (verbose) { 139 va_start(ap, emsg); 140 vlog(LOG_DEBUG, emsg, ap); 141 va_end(ap); 142 } 143 } 144 145 void 146 fatal(const char *emsg) 147 { 148 if (emsg == NULL) 149 logit(LOG_CRIT, "fatal in %s: %s", procnames[ripd_process], 150 strerror(errno)); 151 else 152 if (errno) 153 logit(LOG_CRIT, "fatal in %s: %s: %s", 154 procnames[ripd_process], emsg, strerror(errno)); 155 else 156 logit(LOG_CRIT, "fatal in %s: %s", 157 procnames[ripd_process], emsg); 158 159 if (ripd_process == PROC_MAIN) 160 exit(1); 161 else /* parent copes via SIGCHLD */ 162 _exit(1); 163 } 164 165 void 166 fatalx(const char *emsg) 167 { 168 errno = 0; 169 fatal(emsg); 170 } 171 172 /* names */ 173 const char * 174 nbr_state_name(int state) 175 { 176 switch (state) { 177 case NBR_STA_DOWN: 178 return ("DOWN"); 179 case NBR_STA_REQ_RCVD: 180 return ("REQUEST RCVD"); 181 case NBR_STA_ACTIVE: 182 return ("ACTIVE"); 183 default: 184 return ("UNKNOWN"); 185 } 186 } 187 188 const char * 189 if_type_name(enum iface_type type) 190 { 191 switch (type) { 192 case IF_TYPE_POINTOPOINT: 193 return ("POINTOPOINT"); 194 case IF_TYPE_BROADCAST: 195 return ("BROADCAST"); 196 case IF_TYPE_NBMA: 197 return ("NBMA"); 198 case IF_TYPE_POINTOMULTIPOINT: 199 return ("POINTOMULTIPOINT"); 200 } 201 /* NOTREACHED */ 202 return ("UNKNOWN"); 203 } 204 205 const char * 206 if_auth_name(enum auth_type type) 207 { 208 switch (type) { 209 case AUTH_NONE: 210 return ("none"); 211 case AUTH_SIMPLE: 212 return ("simple"); 213 case AUTH_CRYPT: 214 return ("crypt"); 215 } 216 /* NOTREACHED */ 217 return ("unknown"); 218 } 219 220 const char * 221 if_state_name(int state) 222 { 223 switch (state) { 224 case IF_STA_DOWN: 225 return ("DOWN"); 226 case IF_STA_ACTIVE: 227 return ("ACTIVE"); 228 default: 229 return ("UNKNOWN"); 230 } 231 } 232