1 /* $OpenBSD: log.c,v 1.10 2013/06/01 18:26:40 claudio 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 <sys/types.h> 20 #include <sys/socket.h> 21 #include <netinet/in.h> 22 #include <arpa/inet.h> 23 24 #include <errno.h> 25 #include <stdarg.h> 26 #include <stdio.h> 27 #include <stdlib.h> 28 #include <string.h> 29 #include <syslog.h> 30 #include <unistd.h> 31 32 #include "ldpd.h" 33 #include "log.h" 34 35 static const char * const procnames[] = { 36 "parent", 37 "ldpe", 38 "lde" 39 }; 40 41 int debug; 42 int verbose; 43 44 void logit(int, const char *, ...); 45 46 void 47 log_init(int n_debug) 48 { 49 extern char *__progname; 50 51 debug = n_debug; 52 53 if (!debug) 54 openlog(__progname, LOG_PID | LOG_NDELAY, LOG_DAEMON); 55 56 tzset(); 57 } 58 59 void 60 log_verbose(int v) 61 { 62 verbose = v; 63 } 64 65 void 66 logit(int pri, const char *fmt, ...) 67 { 68 va_list ap; 69 70 va_start(ap, fmt); 71 vlog(pri, fmt, ap); 72 va_end(ap); 73 } 74 75 void 76 vlog(int pri, const char *fmt, va_list ap) 77 { 78 char *nfmt; 79 80 if (debug) { 81 /* best effort in out of mem situations */ 82 if (asprintf(&nfmt, "%s\n", fmt) == -1) { 83 vfprintf(stderr, fmt, ap); 84 fprintf(stderr, "\n"); 85 } else { 86 vfprintf(stderr, nfmt, ap); 87 free(nfmt); 88 } 89 fflush(stderr); 90 } else 91 vsyslog(pri, fmt, ap); 92 } 93 94 void 95 log_warn(const char *emsg, ...) 96 { 97 char *nfmt; 98 va_list ap; 99 100 /* best effort to even work in out of memory situations */ 101 if (emsg == NULL) 102 logit(LOG_CRIT, "%s", strerror(errno)); 103 else { 104 va_start(ap, emsg); 105 106 if (asprintf(&nfmt, "%s: %s", emsg, strerror(errno)) == -1) { 107 /* we tried it... */ 108 vlog(LOG_CRIT, emsg, ap); 109 logit(LOG_CRIT, "%s", strerror(errno)); 110 } else { 111 vlog(LOG_CRIT, nfmt, ap); 112 free(nfmt); 113 } 114 va_end(ap); 115 } 116 } 117 118 void 119 log_warnx(const char *emsg, ...) 120 { 121 va_list ap; 122 123 va_start(ap, emsg); 124 vlog(LOG_CRIT, emsg, ap); 125 va_end(ap); 126 } 127 128 void 129 log_info(const char *emsg, ...) 130 { 131 va_list ap; 132 133 va_start(ap, emsg); 134 vlog(LOG_INFO, emsg, ap); 135 va_end(ap); 136 } 137 138 void 139 log_debug(const char *emsg, ...) 140 { 141 va_list ap; 142 143 if (verbose) { 144 va_start(ap, emsg); 145 vlog(LOG_DEBUG, emsg, ap); 146 va_end(ap); 147 } 148 } 149 150 void 151 fatal(const char *emsg) 152 { 153 if (emsg == NULL) 154 logit(LOG_CRIT, "fatal in %s: %s", procnames[ldpd_process], 155 strerror(errno)); 156 else 157 if (errno) 158 logit(LOG_CRIT, "fatal in %s: %s: %s", 159 procnames[ldpd_process], emsg, strerror(errno)); 160 else 161 logit(LOG_CRIT, "fatal in %s: %s", 162 procnames[ldpd_process], emsg); 163 164 if (ldpd_process == PROC_MAIN) 165 exit(1); 166 else /* parent copes via SIGCHLD */ 167 _exit(1); 168 } 169 170 void 171 fatalx(const char *emsg) 172 { 173 errno = 0; 174 fatal(emsg); 175 } 176 177 /* names */ 178 const char * 179 nbr_state_name(int state) 180 { 181 switch (state) { 182 case NBR_STA_DOWN: 183 return ("DOWN"); 184 case NBR_STA_PRESENT: 185 return ("PRESENT"); 186 case NBR_STA_INITIAL: 187 return ("INITIALIZED"); 188 case NBR_STA_OPENREC: 189 return ("OPENREC"); 190 case NBR_STA_OPENSENT: 191 return ("OPENSENT"); 192 case NBR_STA_OPER: 193 return ("OPERATIONAL"); 194 default: 195 return ("UNKNW"); 196 } 197 } 198 199 const char * 200 if_state_name(int state) 201 { 202 switch (state) { 203 case IF_STA_DOWN: 204 return ("DOWN"); 205 case IF_STA_ACTIVE: 206 return ("ACTIVE"); 207 default: 208 return ("UNKNW"); 209 } 210 } 211 212 const char * 213 if_type_name(enum iface_type type) 214 { 215 switch (type) { 216 case IF_TYPE_POINTOPOINT: 217 return ("POINTOPOINT"); 218 case IF_TYPE_BROADCAST: 219 return ("BROADCAST"); 220 } 221 /* NOTREACHED */ 222 return ("UNKNOWN"); 223 } 224 225 const char * 226 notification_name(u_int32_t status) 227 { 228 static char buf[16]; 229 230 switch (status) { 231 case S_SUCCESS: 232 return ("Success"); 233 case S_BAD_LDP_ID: 234 return ("Bad LDP Identifier"); 235 case S_BAD_PROTO_VER: 236 return ("Bad Protocol Version"); 237 case S_BAD_PDU_LEN: 238 return ("Bad PDU Length"); 239 case S_UNKNOWN_MSG: 240 return ("Unknown Message Type"); 241 case S_BAD_MSG_LEN: 242 return ("Bad Message Length"); 243 case S_UNKNOWN_TLV: 244 return ("Unknown TLV"); 245 case S_BAD_TLV_LEN: 246 return ("Bad TLV Length"); 247 case S_BAD_TLV_VAL: 248 return ("Malformed TLV Value"); 249 case S_HOLDTIME_EXP: 250 return ("Hold Timer Expired"); 251 case S_SHUTDOWN: 252 return ("Shutdown"); 253 case S_LOOP_DETECTED: 254 return ("Loop Detected"); 255 case S_UNKNOWN_FEC: 256 return ("Unknown FEC"); 257 case S_NO_ROUTE: 258 return ("No Route"); 259 case S_NO_LABEL_RES: 260 return ("No Label Resources"); 261 case S_AVAILABLE: 262 return ("Label Resources Available"); 263 case S_NO_HELLO: 264 return ("Session Rejected, No Hello"); 265 case S_PARM_ADV_MODE: 266 return ("Rejected Advertisement Mode Parameter"); 267 case S_MAX_PDU_LEN: 268 return ("Rejected Max PDU Length Parameter"); 269 case S_PARM_L_RANGE: 270 return ("Rejected Label Range Parameter"); 271 case S_KEEPALIVE_TMR: 272 return ("KeepAlive Timer Expired"); 273 case S_LAB_REQ_ABRT: 274 return ("Label Request Aborted"); 275 case S_MISS_MSG: 276 return ("Missing Message Parameters"); 277 case S_UNSUP_ADDR: 278 return ("Unsupported Address Family"); 279 case S_KEEPALIVE_BAD: 280 return ("Bad KeepAlive Time"); 281 case S_INTERN_ERR: 282 return ("Internal Error"); 283 default: 284 snprintf(buf, sizeof(buf), "[%08x]", status); 285 return (buf); 286 } 287 } 288 289 const char * 290 log_fec(struct map *map) 291 { 292 static char buf[32]; 293 char pstr[32]; 294 295 if (snprintf(buf, sizeof(buf), "%s/%u", 296 inet_ntop(AF_INET, &map->prefix, pstr, sizeof(pstr)), 297 map->prefixlen) == -1) 298 return ("???"); 299 300 return (buf); 301 } 302