1 /* $OpenBSD: log.c,v 1.7 2011/08/20 11:16:09 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 "ospfd.h" 28 #include "log.h" 29 30 static const char * const procnames[] = { 31 "parent", 32 "ospfe", 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[ospfd_process], 150 strerror(errno)); 151 else 152 if (errno) 153 logit(LOG_CRIT, "fatal in %s: %s: %s", 154 procnames[ospfd_process], emsg, strerror(errno)); 155 else 156 logit(LOG_CRIT, "fatal in %s: %s", 157 procnames[ospfd_process], emsg); 158 159 if (ospfd_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_ATTEMPT: 180 return ("ATTMP"); 181 case NBR_STA_INIT: 182 return ("INIT"); 183 case NBR_STA_2_WAY: 184 return ("2-WAY"); 185 case NBR_STA_XSTRT: 186 return ("EXSTA"); 187 case NBR_STA_SNAP: 188 return ("SNAP"); 189 case NBR_STA_XCHNG: 190 return ("EXCHG"); 191 case NBR_STA_LOAD: 192 return ("LOAD"); 193 case NBR_STA_FULL: 194 return ("FULL"); 195 default: 196 return ("UNKNW"); 197 } 198 } 199 200 const char * 201 if_state_name(int state) 202 { 203 switch (state) { 204 case IF_STA_DOWN: 205 return ("DOWN"); 206 case IF_STA_LOOPBACK: 207 return ("LOOP"); 208 case IF_STA_WAITING: 209 return ("WAIT"); 210 case IF_STA_POINTTOPOINT: 211 return ("P2P"); 212 case IF_STA_DROTHER: 213 return ("OTHER"); 214 case IF_STA_BACKUP: 215 return ("BCKUP"); 216 case IF_STA_DR: 217 return ("DR"); 218 default: 219 return ("UNKNW"); 220 } 221 } 222 223 const char * 224 if_type_name(enum iface_type type) 225 { 226 switch (type) { 227 case IF_TYPE_POINTOPOINT: 228 return ("POINTOPOINT"); 229 case IF_TYPE_BROADCAST: 230 return ("BROADCAST"); 231 case IF_TYPE_NBMA: 232 return ("NBMA"); 233 case IF_TYPE_POINTOMULTIPOINT: 234 return ("POINTOMULTIPOINT"); 235 case IF_TYPE_VIRTUALLINK: 236 return ("VIRTUALLINK"); 237 } 238 /* NOTREACHED */ 239 return ("UNKNOWN"); 240 } 241 242 const char * 243 if_auth_name(enum auth_type type) 244 { 245 switch (type) { 246 case AUTH_NONE: 247 return ("none"); 248 case AUTH_SIMPLE: 249 return ("simple"); 250 case AUTH_CRYPT: 251 return ("crypt"); 252 } 253 /* NOTREACHED */ 254 return ("unknown"); 255 } 256 257 const char * 258 dst_type_name(enum dst_type type) 259 { 260 switch (type) { 261 case DT_NET: 262 return ("Network"); 263 case DT_RTR: 264 return ("Router"); 265 } 266 /* NOTREACHED */ 267 return ("unknown"); 268 } 269 270 const char * 271 path_type_name(enum path_type type) 272 { 273 switch (type) { 274 case PT_INTRA_AREA: 275 return ("Intra-Area"); 276 case PT_INTER_AREA: 277 return ("Inter-Area"); 278 case PT_TYPE1_EXT: 279 return ("Type 1 ext"); 280 case PT_TYPE2_EXT: 281 return ("Type 2 ext"); 282 } 283 /* NOTREACHED */ 284 return ("unknown"); 285 } 286 287