Annotation of embedaddon/libevent/log.c, revision 1.1
1.1 ! misho 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 Nick Mathewson <nickm@freehaven.net>
! 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: #ifdef HAVE_CONFIG_H
! 41: #include "config.h"
! 42: #endif
! 43:
! 44: #ifdef WIN32
! 45: #define WIN32_LEAN_AND_MEAN
! 46: #include <windows.h>
! 47: #undef WIN32_LEAN_AND_MEAN
! 48: #endif
! 49: #include <sys/types.h>
! 50: #ifdef HAVE_SYS_TIME_H
! 51: #include <sys/time.h>
! 52: #else
! 53: #include <sys/_libevent_time.h>
! 54: #endif
! 55: #include <stdio.h>
! 56: #include <stdlib.h>
! 57: #include <stdarg.h>
! 58: #include <string.h>
! 59: #include <errno.h>
! 60: #include "event.h"
! 61:
! 62: #include "log.h"
! 63: #include "evutil.h"
! 64:
! 65: static void _warn_helper(int severity, int log_errno, const char *fmt,
! 66: va_list ap);
! 67: static void event_log(int severity, const char *msg);
! 68:
! 69: void
! 70: event_err(int eval, const char *fmt, ...)
! 71: {
! 72: va_list ap;
! 73:
! 74: va_start(ap, fmt);
! 75: _warn_helper(_EVENT_LOG_ERR, errno, fmt, ap);
! 76: va_end(ap);
! 77: exit(eval);
! 78: }
! 79:
! 80: void
! 81: event_warn(const char *fmt, ...)
! 82: {
! 83: va_list ap;
! 84:
! 85: va_start(ap, fmt);
! 86: _warn_helper(_EVENT_LOG_WARN, errno, fmt, ap);
! 87: va_end(ap);
! 88: }
! 89:
! 90: void
! 91: event_errx(int eval, const char *fmt, ...)
! 92: {
! 93: va_list ap;
! 94:
! 95: va_start(ap, fmt);
! 96: _warn_helper(_EVENT_LOG_ERR, -1, fmt, ap);
! 97: va_end(ap);
! 98: exit(eval);
! 99: }
! 100:
! 101: void
! 102: event_warnx(const char *fmt, ...)
! 103: {
! 104: va_list ap;
! 105:
! 106: va_start(ap, fmt);
! 107: _warn_helper(_EVENT_LOG_WARN, -1, fmt, ap);
! 108: va_end(ap);
! 109: }
! 110:
! 111: void
! 112: event_msgx(const char *fmt, ...)
! 113: {
! 114: va_list ap;
! 115:
! 116: va_start(ap, fmt);
! 117: _warn_helper(_EVENT_LOG_MSG, -1, fmt, ap);
! 118: va_end(ap);
! 119: }
! 120:
! 121: void
! 122: _event_debugx(const char *fmt, ...)
! 123: {
! 124: va_list ap;
! 125:
! 126: va_start(ap, fmt);
! 127: _warn_helper(_EVENT_LOG_DEBUG, -1, fmt, ap);
! 128: va_end(ap);
! 129: }
! 130:
! 131: static void
! 132: _warn_helper(int severity, int log_errno, const char *fmt, va_list ap)
! 133: {
! 134: char buf[1024];
! 135: size_t len;
! 136:
! 137: if (fmt != NULL)
! 138: evutil_vsnprintf(buf, sizeof(buf), fmt, ap);
! 139: else
! 140: buf[0] = '\0';
! 141:
! 142: if (log_errno >= 0) {
! 143: len = strlen(buf);
! 144: if (len < sizeof(buf) - 3) {
! 145: evutil_snprintf(buf + len, sizeof(buf) - len, ": %s",
! 146: strerror(log_errno));
! 147: }
! 148: }
! 149:
! 150: event_log(severity, buf);
! 151: }
! 152:
! 153: static event_log_cb log_fn = NULL;
! 154:
! 155: void
! 156: event_set_log_callback(event_log_cb cb)
! 157: {
! 158: log_fn = cb;
! 159: }
! 160:
! 161: static void
! 162: event_log(int severity, const char *msg)
! 163: {
! 164: if (log_fn)
! 165: log_fn(severity, msg);
! 166: else {
! 167: const char *severity_str;
! 168: switch (severity) {
! 169: case _EVENT_LOG_DEBUG:
! 170: severity_str = "debug";
! 171: break;
! 172: case _EVENT_LOG_MSG:
! 173: severity_str = "msg";
! 174: break;
! 175: case _EVENT_LOG_WARN:
! 176: severity_str = "warn";
! 177: break;
! 178: case _EVENT_LOG_ERR:
! 179: severity_str = "err";
! 180: break;
! 181: default:
! 182: severity_str = "???";
! 183: break;
! 184: }
! 185: (void)fprintf(stderr, "[%s] %s\n", severity_str, msg);
! 186: }
! 187: }
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