Line data Source code
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"
41 : #include "evconfig-private.h"
42 :
43 : #ifdef _WIN32
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 :
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 :
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 :
72 : #ifdef USE_GLOBAL_FOR_DEBUG_LOGGING
73 : ev_uint32_t event_debug_logging_mask_ = DEFAULT_MASK;
74 : #else
75 : static ev_uint32_t event_debug_logging_mask_ = DEFAULT_MASK;
76 : ev_uint32_t
77 : event_debug_get_logging_mask_(void)
78 : {
79 : return event_debug_logging_mask_;
80 : }
81 : #endif
82 : #endif /* EVENT_DEBUG_LOGGING_ENABLED */
83 :
84 : void
85 0 : event_enable_debug_logging(ev_uint32_t which)
86 : {
87 : #ifdef EVENT_DEBUG_LOGGING_ENABLED
88 0 : event_debug_logging_mask_ = which;
89 : #endif
90 0 : }
91 :
92 : void
93 0 : event_set_fatal_callback(event_fatal_cb cb)
94 : {
95 0 : fatal_fn = cb;
96 0 : }
97 :
98 : static void
99 0 : event_exit(int errcode)
100 : {
101 0 : if (fatal_fn) {
102 0 : fatal_fn(errcode);
103 0 : exit(errcode); /* should never be reached */
104 0 : } else if (errcode == EVENT_ERR_ABORT_)
105 0 : abort();
106 : else
107 0 : exit(errcode);
108 : }
109 :
110 : void
111 0 : event_err(int eval, const char *fmt, ...)
112 : {
113 : va_list ap;
114 :
115 0 : va_start(ap, fmt);
116 0 : event_logv_(EVENT_LOG_ERR, strerror(errno), fmt, ap);
117 0 : va_end(ap);
118 0 : event_exit(eval);
119 : }
120 :
121 : void
122 0 : event_warn(const char *fmt, ...)
123 : {
124 : va_list ap;
125 :
126 0 : va_start(ap, fmt);
127 0 : event_logv_(EVENT_LOG_WARN, strerror(errno), fmt, ap);
128 0 : va_end(ap);
129 0 : }
130 :
131 : void
132 0 : event_sock_err(int eval, evutil_socket_t sock, const char *fmt, ...)
133 : {
134 : va_list ap;
135 0 : int err = evutil_socket_geterror(sock);
136 :
137 0 : va_start(ap, fmt);
138 0 : event_logv_(EVENT_LOG_ERR, evutil_socket_error_to_string(err), fmt, ap);
139 0 : va_end(ap);
140 0 : event_exit(eval);
141 : }
142 :
143 : void
144 0 : event_sock_warn(evutil_socket_t sock, const char *fmt, ...)
145 : {
146 : va_list ap;
147 0 : int err = evutil_socket_geterror(sock);
148 :
149 0 : va_start(ap, fmt);
150 0 : event_logv_(EVENT_LOG_WARN, evutil_socket_error_to_string(err), fmt, ap);
151 0 : va_end(ap);
152 0 : }
153 :
154 : void
155 0 : event_errx(int eval, const char *fmt, ...)
156 : {
157 : va_list ap;
158 :
159 0 : va_start(ap, fmt);
160 0 : event_logv_(EVENT_LOG_ERR, NULL, fmt, ap);
161 0 : va_end(ap);
162 0 : event_exit(eval);
163 : }
164 :
165 : void
166 0 : event_warnx(const char *fmt, ...)
167 : {
168 : va_list ap;
169 :
170 0 : va_start(ap, fmt);
171 0 : event_logv_(EVENT_LOG_WARN, NULL, fmt, ap);
172 0 : va_end(ap);
173 0 : }
174 :
175 : void
176 0 : event_msgx(const char *fmt, ...)
177 : {
178 : va_list ap;
179 :
180 0 : va_start(ap, fmt);
181 0 : event_logv_(EVENT_LOG_MSG, NULL, fmt, ap);
182 0 : va_end(ap);
183 0 : }
184 :
185 : void
186 0 : event_debugx_(const char *fmt, ...)
187 : {
188 : va_list ap;
189 :
190 0 : va_start(ap, fmt);
191 0 : event_logv_(EVENT_LOG_DEBUG, NULL, fmt, ap);
192 0 : va_end(ap);
193 0 : }
194 :
195 : void
196 0 : event_logv_(int severity, const char *errstr, const char *fmt, va_list ap)
197 : {
198 : char buf[1024];
199 : size_t len;
200 :
201 0 : if (severity == EVENT_LOG_DEBUG && !event_debug_get_logging_mask_())
202 0 : return;
203 :
204 0 : if (fmt != NULL)
205 0 : evutil_vsnprintf(buf, sizeof(buf), fmt, ap);
206 : else
207 0 : buf[0] = '\0';
208 :
209 0 : if (errstr) {
210 0 : len = strlen(buf);
211 0 : if (len < sizeof(buf) - 3) {
212 0 : evutil_snprintf(buf + len, sizeof(buf) - len, ": %s", errstr);
213 : }
214 : }
215 :
216 0 : event_log(severity, buf);
217 : }
218 :
219 : static event_log_cb log_fn = NULL;
220 :
221 : void
222 0 : event_set_log_callback(event_log_cb cb)
223 : {
224 0 : log_fn = cb;
225 0 : }
226 :
227 : static void
228 0 : event_log(int severity, const char *msg)
229 : {
230 0 : if (log_fn)
231 0 : log_fn(severity, msg);
232 : else {
233 : const char *severity_str;
234 0 : switch (severity) {
235 : case EVENT_LOG_DEBUG:
236 0 : severity_str = "debug";
237 0 : break;
238 : case EVENT_LOG_MSG:
239 0 : severity_str = "msg";
240 0 : break;
241 : case EVENT_LOG_WARN:
242 0 : severity_str = "warn";
243 0 : break;
244 : case EVENT_LOG_ERR:
245 0 : severity_str = "err";
246 0 : break;
247 : default:
248 0 : severity_str = "???";
249 0 : break;
250 : }
251 0 : (void)fprintf(stderr, "[%s] %s\n", severity_str, msg);
252 : }
253 0 : }
|
