Christopher Wiley | e867981 | 2015-07-01 13:36:18 -0700 | [diff] [blame] | 1 | /* $OpenBSD: err.c,v 1.2 2002/06/25 15:50:15 mickey Exp $ */ |
| 2 | |
| 3 | /* |
| 4 | * log.c |
| 5 | * |
| 6 | * Based on err.c, which was adapted from OpenBSD libc *err* *warn* code. |
| 7 | * |
| 8 | * Copyright (c) 2005-2012 Niels Provos and Nick Mathewson |
| 9 | * |
| 10 | * Copyright (c) 2000 Dug Song <dugsong@monkey.org> |
| 11 | * |
| 12 | * Copyright (c) 1993 |
| 13 | * The Regents of the University of California. All rights reserved. |
| 14 | * |
| 15 | * Redistribution and use in source and binary forms, with or without |
| 16 | * modification, are permitted provided that the following conditions |
| 17 | * are met: |
| 18 | * 1. Redistributions of source code must retain the above copyright |
| 19 | * notice, this list of conditions and the following disclaimer. |
| 20 | * 2. Redistributions in binary form must reproduce the above copyright |
| 21 | * notice, this list of conditions and the following disclaimer in the |
| 22 | * documentation and/or other materials provided with the distribution. |
| 23 | * 3. Neither the name of the University nor the names of its contributors |
| 24 | * may be used to endorse or promote products derived from this software |
| 25 | * without specific prior written permission. |
| 26 | * |
| 27 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
| 28 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 29 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 30 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
| 31 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| 32 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| 33 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 34 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| 35 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| 36 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| 37 | * SUCH DAMAGE. |
| 38 | */ |
| 39 | |
| 40 | #include "event2/event-config.h" |
Narayan Kamath | fc74cb4 | 2017-09-13 12:53:52 +0100 | [diff] [blame] | 41 | #include "evconfig-private.h" |
Christopher Wiley | e867981 | 2015-07-01 13:36:18 -0700 | [diff] [blame] | 42 | |
Narayan Kamath | fc74cb4 | 2017-09-13 12:53:52 +0100 | [diff] [blame] | 43 | #ifdef _WIN32 |
Christopher Wiley | e867981 | 2015-07-01 13:36:18 -0700 | [diff] [blame] | 44 | #include <winsock2.h> |
| 45 | #define WIN32_LEAN_AND_MEAN |
| 46 | #include <windows.h> |
| 47 | #undef WIN32_LEAN_AND_MEAN |
| 48 | #endif |
| 49 | #include <sys/types.h> |
| 50 | #include <stdio.h> |
| 51 | #include <stdlib.h> |
| 52 | #include <stdarg.h> |
| 53 | #include <string.h> |
| 54 | #include <errno.h> |
| 55 | #include "event2/event.h" |
| 56 | #include "event2/util.h" |
| 57 | |
| 58 | #include "log-internal.h" |
| 59 | |
Christopher Wiley | e867981 | 2015-07-01 13:36:18 -0700 | [diff] [blame] | 60 | static void event_log(int severity, const char *msg); |
| 61 | static void event_exit(int errcode) EV_NORETURN; |
| 62 | |
| 63 | static event_fatal_cb fatal_fn = NULL; |
| 64 | |
Narayan Kamath | fc74cb4 | 2017-09-13 12:53:52 +0100 | [diff] [blame] | 65 | #ifdef EVENT_DEBUG_LOGGING_ENABLED |
| 66 | #ifdef USE_DEBUG |
| 67 | #define DEFAULT_MASK EVENT_DBG_ALL |
| 68 | #else |
| 69 | #define DEFAULT_MASK 0 |
| 70 | #endif |
| 71 | |
Haibo Huang | b227967 | 2019-05-31 16:12:39 -0700 | [diff] [blame] | 72 | EVENT2_EXPORT_SYMBOL ev_uint32_t event_debug_logging_mask_ = DEFAULT_MASK; |
Narayan Kamath | fc74cb4 | 2017-09-13 12:53:52 +0100 | [diff] [blame] | 73 | #endif /* EVENT_DEBUG_LOGGING_ENABLED */ |
| 74 | |
| 75 | void |
| 76 | event_enable_debug_logging(ev_uint32_t which) |
| 77 | { |
| 78 | #ifdef EVENT_DEBUG_LOGGING_ENABLED |
| 79 | event_debug_logging_mask_ = which; |
| 80 | #endif |
| 81 | } |
| 82 | |
Christopher Wiley | e867981 | 2015-07-01 13:36:18 -0700 | [diff] [blame] | 83 | void |
| 84 | event_set_fatal_callback(event_fatal_cb cb) |
| 85 | { |
| 86 | fatal_fn = cb; |
| 87 | } |
| 88 | |
| 89 | static void |
| 90 | event_exit(int errcode) |
| 91 | { |
| 92 | if (fatal_fn) { |
| 93 | fatal_fn(errcode); |
| 94 | exit(errcode); /* should never be reached */ |
Narayan Kamath | fc74cb4 | 2017-09-13 12:53:52 +0100 | [diff] [blame] | 95 | } else if (errcode == EVENT_ERR_ABORT_) |
Christopher Wiley | e867981 | 2015-07-01 13:36:18 -0700 | [diff] [blame] | 96 | abort(); |
| 97 | else |
| 98 | exit(errcode); |
| 99 | } |
| 100 | |
| 101 | void |
| 102 | event_err(int eval, const char *fmt, ...) |
| 103 | { |
| 104 | va_list ap; |
| 105 | |
| 106 | va_start(ap, fmt); |
Narayan Kamath | fc74cb4 | 2017-09-13 12:53:52 +0100 | [diff] [blame] | 107 | event_logv_(EVENT_LOG_ERR, strerror(errno), fmt, ap); |
Christopher Wiley | e867981 | 2015-07-01 13:36:18 -0700 | [diff] [blame] | 108 | va_end(ap); |
| 109 | event_exit(eval); |
| 110 | } |
| 111 | |
| 112 | void |
| 113 | event_warn(const char *fmt, ...) |
| 114 | { |
| 115 | va_list ap; |
| 116 | |
| 117 | va_start(ap, fmt); |
Narayan Kamath | fc74cb4 | 2017-09-13 12:53:52 +0100 | [diff] [blame] | 118 | event_logv_(EVENT_LOG_WARN, strerror(errno), fmt, ap); |
Christopher Wiley | e867981 | 2015-07-01 13:36:18 -0700 | [diff] [blame] | 119 | va_end(ap); |
| 120 | } |
| 121 | |
| 122 | void |
| 123 | event_sock_err(int eval, evutil_socket_t sock, const char *fmt, ...) |
| 124 | { |
| 125 | va_list ap; |
| 126 | int err = evutil_socket_geterror(sock); |
| 127 | |
| 128 | va_start(ap, fmt); |
Narayan Kamath | fc74cb4 | 2017-09-13 12:53:52 +0100 | [diff] [blame] | 129 | event_logv_(EVENT_LOG_ERR, evutil_socket_error_to_string(err), fmt, ap); |
Christopher Wiley | e867981 | 2015-07-01 13:36:18 -0700 | [diff] [blame] | 130 | va_end(ap); |
| 131 | event_exit(eval); |
| 132 | } |
| 133 | |
| 134 | void |
| 135 | event_sock_warn(evutil_socket_t sock, const char *fmt, ...) |
| 136 | { |
| 137 | va_list ap; |
| 138 | int err = evutil_socket_geterror(sock); |
| 139 | |
| 140 | va_start(ap, fmt); |
Narayan Kamath | fc74cb4 | 2017-09-13 12:53:52 +0100 | [diff] [blame] | 141 | event_logv_(EVENT_LOG_WARN, evutil_socket_error_to_string(err), fmt, ap); |
Christopher Wiley | e867981 | 2015-07-01 13:36:18 -0700 | [diff] [blame] | 142 | va_end(ap); |
| 143 | } |
| 144 | |
| 145 | void |
| 146 | event_errx(int eval, const char *fmt, ...) |
| 147 | { |
| 148 | va_list ap; |
| 149 | |
| 150 | va_start(ap, fmt); |
Narayan Kamath | fc74cb4 | 2017-09-13 12:53:52 +0100 | [diff] [blame] | 151 | event_logv_(EVENT_LOG_ERR, NULL, fmt, ap); |
Christopher Wiley | e867981 | 2015-07-01 13:36:18 -0700 | [diff] [blame] | 152 | va_end(ap); |
| 153 | event_exit(eval); |
| 154 | } |
| 155 | |
| 156 | void |
| 157 | event_warnx(const char *fmt, ...) |
| 158 | { |
| 159 | va_list ap; |
| 160 | |
| 161 | va_start(ap, fmt); |
Narayan Kamath | fc74cb4 | 2017-09-13 12:53:52 +0100 | [diff] [blame] | 162 | event_logv_(EVENT_LOG_WARN, NULL, fmt, ap); |
Christopher Wiley | e867981 | 2015-07-01 13:36:18 -0700 | [diff] [blame] | 163 | va_end(ap); |
| 164 | } |
| 165 | |
| 166 | void |
| 167 | event_msgx(const char *fmt, ...) |
| 168 | { |
| 169 | va_list ap; |
| 170 | |
| 171 | va_start(ap, fmt); |
Narayan Kamath | fc74cb4 | 2017-09-13 12:53:52 +0100 | [diff] [blame] | 172 | event_logv_(EVENT_LOG_MSG, NULL, fmt, ap); |
Christopher Wiley | e867981 | 2015-07-01 13:36:18 -0700 | [diff] [blame] | 173 | va_end(ap); |
| 174 | } |
| 175 | |
| 176 | void |
Narayan Kamath | fc74cb4 | 2017-09-13 12:53:52 +0100 | [diff] [blame] | 177 | event_debugx_(const char *fmt, ...) |
Christopher Wiley | e867981 | 2015-07-01 13:36:18 -0700 | [diff] [blame] | 178 | { |
| 179 | va_list ap; |
| 180 | |
| 181 | va_start(ap, fmt); |
Narayan Kamath | fc74cb4 | 2017-09-13 12:53:52 +0100 | [diff] [blame] | 182 | event_logv_(EVENT_LOG_DEBUG, NULL, fmt, ap); |
Christopher Wiley | e867981 | 2015-07-01 13:36:18 -0700 | [diff] [blame] | 183 | va_end(ap); |
| 184 | } |
| 185 | |
Narayan Kamath | fc74cb4 | 2017-09-13 12:53:52 +0100 | [diff] [blame] | 186 | void |
| 187 | event_logv_(int severity, const char *errstr, const char *fmt, va_list ap) |
Christopher Wiley | e867981 | 2015-07-01 13:36:18 -0700 | [diff] [blame] | 188 | { |
| 189 | char buf[1024]; |
| 190 | size_t len; |
| 191 | |
Narayan Kamath | fc74cb4 | 2017-09-13 12:53:52 +0100 | [diff] [blame] | 192 | if (severity == EVENT_LOG_DEBUG && !event_debug_get_logging_mask_()) |
| 193 | return; |
| 194 | |
Christopher Wiley | e867981 | 2015-07-01 13:36:18 -0700 | [diff] [blame] | 195 | if (fmt != NULL) |
| 196 | evutil_vsnprintf(buf, sizeof(buf), fmt, ap); |
| 197 | else |
| 198 | buf[0] = '\0'; |
| 199 | |
| 200 | if (errstr) { |
| 201 | len = strlen(buf); |
| 202 | if (len < sizeof(buf) - 3) { |
| 203 | evutil_snprintf(buf + len, sizeof(buf) - len, ": %s", errstr); |
| 204 | } |
| 205 | } |
| 206 | |
| 207 | event_log(severity, buf); |
| 208 | } |
| 209 | |
| 210 | static event_log_cb log_fn = NULL; |
| 211 | |
| 212 | void |
| 213 | event_set_log_callback(event_log_cb cb) |
| 214 | { |
| 215 | log_fn = cb; |
| 216 | } |
| 217 | |
| 218 | static void |
| 219 | event_log(int severity, const char *msg) |
| 220 | { |
| 221 | if (log_fn) |
| 222 | log_fn(severity, msg); |
| 223 | else { |
| 224 | const char *severity_str; |
| 225 | switch (severity) { |
Narayan Kamath | fc74cb4 | 2017-09-13 12:53:52 +0100 | [diff] [blame] | 226 | case EVENT_LOG_DEBUG: |
Christopher Wiley | e867981 | 2015-07-01 13:36:18 -0700 | [diff] [blame] | 227 | severity_str = "debug"; |
| 228 | break; |
Narayan Kamath | fc74cb4 | 2017-09-13 12:53:52 +0100 | [diff] [blame] | 229 | case EVENT_LOG_MSG: |
Christopher Wiley | e867981 | 2015-07-01 13:36:18 -0700 | [diff] [blame] | 230 | severity_str = "msg"; |
| 231 | break; |
Narayan Kamath | fc74cb4 | 2017-09-13 12:53:52 +0100 | [diff] [blame] | 232 | case EVENT_LOG_WARN: |
Christopher Wiley | e867981 | 2015-07-01 13:36:18 -0700 | [diff] [blame] | 233 | severity_str = "warn"; |
| 234 | break; |
Narayan Kamath | fc74cb4 | 2017-09-13 12:53:52 +0100 | [diff] [blame] | 235 | case EVENT_LOG_ERR: |
Christopher Wiley | e867981 | 2015-07-01 13:36:18 -0700 | [diff] [blame] | 236 | severity_str = "err"; |
| 237 | break; |
| 238 | default: |
| 239 | severity_str = "???"; |
| 240 | break; |
| 241 | } |
| 242 | (void)fprintf(stderr, "[%s] %s\n", severity_str, msg); |
| 243 | } |
| 244 | } |