1 /* $OpenBSD: log.c,v 1.5 2009/11/02 20:24:58 claudio Exp $ */ 2 3 /* 4 * Copyright (c) 2006 Claudio Jeker <claudio@openbsd.org> 5 * Copyright (c) 2003, 2004 Henning Brauer <henning@openbsd.org> 6 * 7 * Permission to use, copy, modify, and distribute this software for any 8 * purpose with or without fee is hereby granted, provided that the above 9 * copyright notice and this permission notice appear in all copies. 10 * 11 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 12 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 13 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 14 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 15 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 16 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 17 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 18 */ 19 20 #include <sys/types.h> 21 #include <sys/socket.h> 22 #include <netinet/in.h> 23 #include <arpa/inet.h> 24 25 #include <netdb.h> 26 #include <errno.h> 27 #include <stdarg.h> 28 #include <stdio.h> 29 #include <stdlib.h> 30 #include <string.h> 31 #include <syslog.h> 32 #include <unistd.h> 33 34 #include "ospf6d.h" 35 #include "log.h" 36 37 static const char * const procnames[] = { 38 "parent", 39 "ospfe", 40 "rde" 41 }; 42 43 int debug; 44 int verbose; 45 46 void logit(int, const char *, ...); 47 48 void 49 log_init(int n_debug) 50 { 51 extern char *__progname; 52 53 debug = n_debug; 54 verbose = n_debug; 55 56 if (!debug) 57 openlog(__progname, LOG_PID | LOG_NDELAY, LOG_DAEMON); 58 59 tzset(); 60 } 61 62 void 63 log_verbose(int v) 64 { 65 verbose = v; 66 } 67 68 void 69 logit(int pri, const char *fmt, ...) 70 { 71 va_list ap; 72 73 va_start(ap, fmt); 74 vlog(pri, fmt, ap); 75 va_end(ap); 76 } 77 78 void 79 vlog(int pri, const char *fmt, va_list ap) 80 { 81 char *nfmt; 82 83 if (debug) { 84 /* best effort in out of mem situations */ 85 if (asprintf(&nfmt, "%s\n", fmt) == -1) { 86 vfprintf(stderr, fmt, ap); 87 fprintf(stderr, "\n"); 88 } else { 89 vfprintf(stderr, nfmt, ap); 90 free(nfmt); 91 } 92 fflush(stderr); 93 } else 94 vsyslog(pri, fmt, ap); 95 } 96 97 void 98 log_warn(const char *emsg, ...) 99 { 100 char *nfmt; 101 va_list ap; 102 103 /* best effort to even work in out of memory situations */ 104 if (emsg == NULL) 105 logit(LOG_CRIT, "%s", strerror(errno)); 106 else { 107 va_start(ap, emsg); 108 109 if (asprintf(&nfmt, "%s: %s", emsg, strerror(errno)) == -1) { 110 /* we tried it... */ 111 vlog(LOG_CRIT, emsg, ap); 112 logit(LOG_CRIT, "%s", strerror(errno)); 113 } else { 114 vlog(LOG_CRIT, nfmt, ap); 115 free(nfmt); 116 } 117 va_end(ap); 118 } 119 } 120 121 void 122 log_warnx(const char *emsg, ...) 123 { 124 va_list ap; 125 126 va_start(ap, emsg); 127 vlog(LOG_CRIT, emsg, ap); 128 va_end(ap); 129 } 130 131 void 132 log_info(const char *emsg, ...) 133 { 134 va_list ap; 135 136 va_start(ap, emsg); 137 vlog(LOG_INFO, emsg, ap); 138 va_end(ap); 139 } 140 141 void 142 log_debug(const char *emsg, ...) 143 { 144 va_list ap; 145 146 if (verbose) { 147 va_start(ap, emsg); 148 vlog(LOG_DEBUG, emsg, ap); 149 va_end(ap); 150 } 151 } 152 153 void 154 fatal(const char *emsg) 155 { 156 if (emsg == NULL) 157 logit(LOG_CRIT, "fatal in %s: %s", procnames[ospfd_process], 158 strerror(errno)); 159 else 160 if (errno) 161 logit(LOG_CRIT, "fatal in %s: %s: %s", 162 procnames[ospfd_process], emsg, strerror(errno)); 163 else 164 logit(LOG_CRIT, "fatal in %s: %s", 165 procnames[ospfd_process], emsg); 166 167 if (ospfd_process == PROC_MAIN) 168 exit(1); 169 else /* parent copes via SIGCHLD */ 170 _exit(1); 171 } 172 173 void 174 fatalx(const char *emsg) 175 { 176 errno = 0; 177 fatal(emsg); 178 } 179 180 const char * 181 log_in6addr(const struct in6_addr *addr) 182 { 183 struct sockaddr_in6 sa_in6; 184 u_int16_t tmp16; 185 186 bzero(&sa_in6, sizeof(sa_in6)); 187 sa_in6.sin6_len = sizeof(sa_in6); 188 sa_in6.sin6_family = AF_INET6; 189 memcpy(&sa_in6.sin6_addr, addr, sizeof(sa_in6.sin6_addr)); 190 191 /* XXX thanks, KAME, for this ugliness... adopted from route/show.c */ 192 if (IN6_IS_ADDR_LINKLOCAL(&sa_in6.sin6_addr) || 193 IN6_IS_ADDR_MC_LINKLOCAL(&sa_in6.sin6_addr)) { 194 memcpy(&tmp16, &sa_in6.sin6_addr.s6_addr[2], sizeof(tmp16)); 195 sa_in6.sin6_scope_id = ntohs(tmp16); 196 sa_in6.sin6_addr.s6_addr[2] = 0; 197 sa_in6.sin6_addr.s6_addr[3] = 0; 198 } 199 200 return (log_sockaddr(&sa_in6)); 201 } 202 203 #define NUM_LOGS 4 204 const char * 205 log_rtr_id(u_int32_t id) 206 { 207 static char buf[NUM_LOGS][16]; 208 static int round = 0; 209 struct in_addr addr; 210 211 round = (round + 1) % NUM_LOGS; 212 213 addr.s_addr = id; 214 if (inet_ntop(AF_INET, &addr, buf[round], 16) == NULL) 215 return ("?"); 216 else 217 return buf[round]; 218 } 219 220 const char * 221 log_sockaddr(void *vp) 222 { 223 static char buf[NUM_LOGS][NI_MAXHOST]; 224 static int round = 0; 225 struct sockaddr *sa = vp; 226 227 round = (round + 1) % NUM_LOGS; 228 229 if (getnameinfo(sa, sa->sa_len, buf[round], NI_MAXHOST, NULL, 0, 230 NI_NUMERICHOST)) 231 return ("(unknown)"); 232 else 233 return (buf[round]); 234 } 235 236 /* names */ 237 const char * 238 nbr_state_name(int state) 239 { 240 switch (state) { 241 case NBR_STA_DOWN: 242 return ("DOWN"); 243 case NBR_STA_ATTEMPT: 244 return ("ATTMP"); 245 case NBR_STA_INIT: 246 return ("INIT"); 247 case NBR_STA_2_WAY: 248 return ("2-WAY"); 249 case NBR_STA_XSTRT: 250 return ("EXSTA"); 251 case NBR_STA_SNAP: 252 return ("SNAP"); 253 case NBR_STA_XCHNG: 254 return ("EXCHG"); 255 case NBR_STA_LOAD: 256 return ("LOAD"); 257 case NBR_STA_FULL: 258 return ("FULL"); 259 default: 260 return ("UNKNW"); 261 } 262 } 263 264 const char * 265 if_state_name(int state) 266 { 267 switch (state) { 268 case IF_STA_DOWN: 269 return ("DOWN"); 270 case IF_STA_LOOPBACK: 271 return ("LOOP"); 272 case IF_STA_WAITING: 273 return ("WAIT"); 274 case IF_STA_POINTTOPOINT: 275 return ("P2P"); 276 case IF_STA_DROTHER: 277 return ("OTHER"); 278 case IF_STA_BACKUP: 279 return ("BCKUP"); 280 case IF_STA_DR: 281 return ("DR"); 282 default: 283 return ("UNKNW"); 284 } 285 } 286 287 const char * 288 if_type_name(enum iface_type type) 289 { 290 switch (type) { 291 case IF_TYPE_POINTOPOINT: 292 return ("POINTOPOINT"); 293 case IF_TYPE_BROADCAST: 294 return ("BROADCAST"); 295 case IF_TYPE_NBMA: 296 return ("NBMA"); 297 case IF_TYPE_POINTOMULTIPOINT: 298 return ("POINTOMULTIPOINT"); 299 case IF_TYPE_VIRTUALLINK: 300 return ("VIRTUALLINK"); 301 } 302 /* NOTREACHED */ 303 return ("UNKNOWN"); 304 } 305 306 const char * 307 dst_type_name(enum dst_type type) 308 { 309 switch (type) { 310 case DT_NET: 311 return ("Network"); 312 case DT_RTR: 313 return ("Router"); 314 } 315 /* NOTREACHED */ 316 return ("unknown"); 317 } 318 319 const char * 320 path_type_name(enum path_type type) 321 { 322 switch (type) { 323 case PT_INTRA_AREA: 324 return ("Intra-Area"); 325 case PT_INTER_AREA: 326 return ("Inter-Area"); 327 case PT_TYPE1_EXT: 328 return ("Type 1 ext"); 329 case PT_TYPE2_EXT: 330 return ("Type 2 ext"); 331 } 332 /* NOTREACHED */ 333 return ("unknown"); 334 } 335