1 /* $NetBSD: log.c,v 1.1.1.1 2009/11/02 10:01:01 plunky Exp $ */ 2 /* $OpenBSD: err.c,v 1.2 2002/06/25 15:50:15 mickey Exp $ */ 3 4 /* 5 * log.c 6 * 7 * Based on err.c, which was adapted from OpenBSD libc *err* *warn* code. 8 * 9 * Copyright (c) 2005 Nick Mathewson <nickm@freehaven.net> 10 * 11 * Copyright (c) 2000 Dug Song <dugsong@monkey.org> 12 * 13 * Copyright (c) 1993 14 * The Regents of the University of California. All rights reserved. 15 * 16 * Redistribution and use in source and binary forms, with or without 17 * modification, are permitted provided that the following conditions 18 * are met: 19 * 1. Redistributions of source code must retain the above copyright 20 * notice, this list of conditions and the following disclaimer. 21 * 2. Redistributions in binary form must reproduce the above copyright 22 * notice, this list of conditions and the following disclaimer in the 23 * documentation and/or other materials provided with the distribution. 24 * 3. Neither the name of the University nor the names of its contributors 25 * may be used to endorse or promote products derived from this software 26 * without specific prior written permission. 27 * 28 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 29 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 30 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 31 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 32 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 33 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 34 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 35 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 36 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 37 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 38 * SUCH DAMAGE. 39 */ 40 41 #ifdef HAVE_CONFIG_H 42 #include "config.h" 43 #endif 44 45 #ifdef WIN32 46 #define WIN32_LEAN_AND_MEAN 47 #include <windows.h> 48 #undef WIN32_LEAN_AND_MEAN 49 #endif 50 #include <sys/types.h> 51 #ifdef HAVE_SYS_TIME_H 52 #include <sys/time.h> 53 #else 54 #include <sys/_time.h> 55 #endif 56 #include <stdio.h> 57 #include <stdlib.h> 58 #include <stdarg.h> 59 #include <string.h> 60 #include <errno.h> 61 #include "event.h" 62 63 #include "log.h" 64 #include "evutil.h" 65 66 static void _warn_helper(int severity, int log_errno, const char *fmt, 67 va_list ap); 68 static void event_log(int severity, const char *msg); 69 70 void 71 event_err(int eval, const char *fmt, ...) 72 { 73 va_list ap; 74 75 va_start(ap, fmt); 76 _warn_helper(_EVENT_LOG_ERR, errno, fmt, ap); 77 va_end(ap); 78 exit(eval); 79 } 80 81 void 82 event_warn(const char *fmt, ...) 83 { 84 va_list ap; 85 86 va_start(ap, fmt); 87 _warn_helper(_EVENT_LOG_WARN, errno, fmt, ap); 88 va_end(ap); 89 } 90 91 void 92 event_errx(int eval, const char *fmt, ...) 93 { 94 va_list ap; 95 96 va_start(ap, fmt); 97 _warn_helper(_EVENT_LOG_ERR, -1, fmt, ap); 98 va_end(ap); 99 exit(eval); 100 } 101 102 void 103 event_warnx(const char *fmt, ...) 104 { 105 va_list ap; 106 107 va_start(ap, fmt); 108 _warn_helper(_EVENT_LOG_WARN, -1, fmt, ap); 109 va_end(ap); 110 } 111 112 void 113 event_msgx(const char *fmt, ...) 114 { 115 va_list ap; 116 117 va_start(ap, fmt); 118 _warn_helper(_EVENT_LOG_MSG, -1, fmt, ap); 119 va_end(ap); 120 } 121 122 void 123 _event_debugx(const char *fmt, ...) 124 { 125 va_list ap; 126 127 va_start(ap, fmt); 128 _warn_helper(_EVENT_LOG_DEBUG, -1, fmt, ap); 129 va_end(ap); 130 } 131 132 static void 133 _warn_helper(int severity, int log_errno, const char *fmt, va_list ap) 134 { 135 char buf[1024]; 136 size_t len; 137 138 if (fmt != NULL) 139 evutil_vsnprintf(buf, sizeof(buf), fmt, ap); 140 else 141 buf[0] = '\0'; 142 143 if (log_errno >= 0) { 144 len = strlen(buf); 145 if (len < sizeof(buf) - 3) { 146 evutil_snprintf(buf + len, sizeof(buf) - len, ": %s", 147 strerror(log_errno)); 148 } 149 } 150 151 event_log(severity, buf); 152 } 153 154 static event_log_cb log_fn = NULL; 155 156 void 157 event_set_log_callback(event_log_cb cb) 158 { 159 log_fn = cb; 160 } 161 162 static void 163 event_log(int severity, const char *msg) 164 { 165 if (log_fn) 166 log_fn(severity, msg); 167 else { 168 const char *severity_str; 169 switch (severity) { 170 case _EVENT_LOG_DEBUG: 171 severity_str = "debug"; 172 break; 173 case _EVENT_LOG_MSG: 174 severity_str = "msg"; 175 break; 176 case _EVENT_LOG_WARN: 177 severity_str = "warn"; 178 break; 179 case _EVENT_LOG_ERR: 180 severity_str = "err"; 181 break; 182 default: 183 severity_str = "???"; 184 break; 185 } 186 (void)fprintf(stderr, "[%s] %s\n", severity_str, msg); 187 } 188 } 189