1 /* $OpenBSD: log.c,v 1.1 2006/06/01 14:12:20 norby 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 "igmp.h" 28 #include "dvmrpd.h" 29 #include "log.h" 30 31 static const char * const procnames[] = { 32 "parent", 33 "dvmrpe", 34 "rde" 35 }; 36 37 int debug; 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 logit(int pri, const char *fmt, ...) 56 { 57 va_list ap; 58 59 va_start(ap, fmt); 60 vlog(pri, fmt, ap); 61 va_end(ap); 62 } 63 64 void 65 vlog(int pri, const char *fmt, va_list ap) 66 { 67 char *nfmt; 68 69 if (debug) { 70 /* best effort in out of mem situations */ 71 if (asprintf(&nfmt, "%s\n", fmt) == -1) { 72 vfprintf(stderr, fmt, ap); 73 fprintf(stderr, "\n"); 74 } else { 75 vfprintf(stderr, nfmt, ap); 76 free(nfmt); 77 } 78 fflush(stderr); 79 } else 80 vsyslog(pri, fmt, ap); 81 } 82 83 void 84 log_warn(const char *emsg, ...) 85 { 86 char *nfmt; 87 va_list ap; 88 89 /* best effort to even work in out of memory situations */ 90 if (emsg == NULL) 91 logit(LOG_CRIT, "%s", strerror(errno)); 92 else { 93 va_start(ap, emsg); 94 95 if (asprintf(&nfmt, "%s: %s", emsg, strerror(errno)) == -1) { 96 /* we tried it... */ 97 vlog(LOG_CRIT, emsg, ap); 98 logit(LOG_CRIT, "%s", strerror(errno)); 99 } else { 100 vlog(LOG_CRIT, nfmt, ap); 101 free(nfmt); 102 } 103 va_end(ap); 104 } 105 } 106 107 void 108 log_warnx(const char *emsg, ...) 109 { 110 va_list ap; 111 112 va_start(ap, emsg); 113 vlog(LOG_CRIT, emsg, ap); 114 va_end(ap); 115 } 116 117 void 118 log_info(const char *emsg, ...) 119 { 120 va_list ap; 121 122 va_start(ap, emsg); 123 vlog(LOG_INFO, emsg, ap); 124 va_end(ap); 125 } 126 127 void 128 log_debug(const char *emsg, ...) 129 { 130 va_list ap; 131 132 if (debug) { 133 va_start(ap, emsg); 134 vlog(LOG_DEBUG, emsg, ap); 135 va_end(ap); 136 } 137 } 138 139 void 140 fatal(const char *emsg) 141 { 142 if (emsg == NULL) 143 logit(LOG_CRIT, "fatal in %s: %s", procnames[dvmrpd_process], 144 strerror(errno)); 145 else 146 if (errno) 147 logit(LOG_CRIT, "fatal in %s: %s: %s", 148 procnames[dvmrpd_process], emsg, strerror(errno)); 149 else 150 logit(LOG_CRIT, "fatal in %s: %s", 151 procnames[dvmrpd_process], emsg); 152 153 if (dvmrpd_process == PROC_MAIN) 154 exit(1); 155 else /* parent copes via SIGCHLD */ 156 _exit(1); 157 } 158 159 void 160 fatalx(const char *emsg) 161 { 162 errno = 0; 163 fatal(emsg); 164 } 165 166 /* names */ 167 const char * 168 nbr_state_name(int state) 169 { 170 switch (state) { 171 case NBR_STA_DOWN: 172 return ("DOWN"); 173 case NBR_STA_1_WAY: 174 return ("1-WAY"); 175 case NBR_STA_2_WAY: 176 return ("2-WAY"); 177 default: 178 return ("UNKNOWN"); 179 } 180 } 181 182 const char * 183 if_state_name(int state) 184 { 185 switch (state) { 186 case IF_STA_DOWN: 187 return ("DOWN"); 188 case IF_STA_QUERIER: 189 return ("QUERIER"); 190 case IF_STA_NONQUERIER: 191 return ("NONQUERIER"); 192 default: 193 return ("UNKNOWN"); 194 } 195 } 196 197 const char * 198 group_state_name(int state) 199 { 200 switch (state) { 201 case GRP_STA_NO_MEMB_PRSNT: 202 return ("NO MEMBER"); 203 case GRP_STA_MEMB_PRSNT: 204 return ("MEMBER"); 205 case GRP_STA_V1_MEMB_PRSNT: 206 return ("V1 MEMBER"); 207 case GRP_STA_CHECK_MEMB: 208 return ("CHECKING"); 209 default: 210 return ("UNKNOWN"); 211 } 212 } 213 214 const char * 215 if_type_name(enum iface_type type) 216 { 217 switch (type) { 218 case IF_TYPE_POINTOPOINT: 219 return ("POINTOPOINT"); 220 case IF_TYPE_BROADCAST: 221 return ("BROADCAST"); 222 } 223 /* NOTREACHED */ 224 return ("UNKNOWN"); 225 } 226