1 /* $OpenBSD: log.c,v 1.3 2013/01/08 10:38:19 reyk 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 MIND, USE, DATA OR PROFITS, WHETHER 15 * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING 16 * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 17 */ 18 19 #include <sys/param.h> 20 #include <sys/queue.h> 21 #include <sys/socket.h> 22 #include <sys/tree.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 <event.h> 31 32 #include "iked.h" 33 34 int debug; 35 int verbose; 36 37 void vlog(int, const char *, va_list); 38 void logit(int, const char *, ...); 39 40 void 41 log_init(int n_debug) 42 { 43 extern char *__progname; 44 45 debug = n_debug; 46 verbose = 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 90 void 91 log_warn(const char *emsg, ...) 92 { 93 char *nfmt; 94 va_list ap; 95 96 /* best effort to even work in out of memory situations */ 97 if (emsg == NULL) 98 logit(LOG_CRIT, "%s", strerror(errno)); 99 else { 100 va_start(ap, emsg); 101 102 if (asprintf(&nfmt, "%s: %s", emsg, strerror(errno)) == -1) { 103 /* we tried it... */ 104 vlog(LOG_CRIT, emsg, ap); 105 logit(LOG_CRIT, "%s", strerror(errno)); 106 } else { 107 vlog(LOG_CRIT, nfmt, ap); 108 free(nfmt); 109 } 110 va_end(ap); 111 } 112 } 113 114 void 115 log_warnx(const char *emsg, ...) 116 { 117 va_list ap; 118 119 va_start(ap, emsg); 120 vlog(LOG_CRIT, emsg, ap); 121 va_end(ap); 122 } 123 124 void 125 log_info(const char *emsg, ...) 126 { 127 va_list ap; 128 129 va_start(ap, emsg); 130 vlog(LOG_INFO, emsg, ap); 131 va_end(ap); 132 } 133 134 void 135 log_debug(const char *emsg, ...) 136 { 137 va_list ap; 138 139 if (verbose > 1) { 140 va_start(ap, emsg); 141 vlog(LOG_DEBUG, emsg, ap); 142 va_end(ap); 143 } 144 } 145 146 void 147 print_debug(const char *emsg, ...) 148 { 149 va_list ap; 150 151 if (debug && verbose > 2) { 152 va_start(ap, emsg); 153 vfprintf(stderr, emsg, ap); 154 va_end(ap); 155 } 156 } 157 158 void 159 print_verbose(const char *emsg, ...) 160 { 161 va_list ap; 162 163 if (verbose) { 164 va_start(ap, emsg); 165 vfprintf(stderr, emsg, ap); 166 va_end(ap); 167 } 168 } 169 170 void 171 fatal(const char *emsg) 172 { 173 if (emsg == NULL) 174 logit(LOG_CRIT, "fatal: %s", strerror(errno)); 175 else { 176 if (errno) 177 logit(LOG_CRIT, "fatal: %s: %s", 178 emsg, strerror(errno)); 179 else 180 logit(LOG_CRIT, "fatal: %s", emsg); 181 } 182 183 exit(1); 184 } 185 186 void 187 fatalx(const char *emsg) 188 { 189 errno = 0; 190 fatal(emsg); 191 } 192