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- /* $OpenBSD: err.c,v 1.2 2002/06/25 15:50:15 mickey Exp $ */
-
- /*
- * log.c
- *
- * Based on err.c, which was adapted from OpenBSD libc *err* *warn* code.
- *
- * Copyright (c) 2005-2012 Niels Provos and Nick Mathewson
- *
- * Copyright (c) 2000 Dug Song <dugsong@monkey.org>
- *
- * Copyright (c) 1993
- * The Regents of the University of California. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. Neither the name of the University nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
- #include "event2/event-config.h"
- #include "evconfig-private.h"
-
- #ifdef _WIN32
- #include <winsock2.h>
- #define WIN32_LEAN_AND_MEAN
- #include <windows.h>
- #undef WIN32_LEAN_AND_MEAN
- #endif
- #include <sys/types.h>
- #include <stdio.h>
- #include <stdlib.h>
- #include <stdarg.h>
- #include <string.h>
- #include <errno.h>
- #include "event2/event.h"
- #include "event2/util.h"
-
- #include "log-internal.h"
-
- static void event_log(int severity, const char *msg);
- static void event_exit(int errcode) EV_NORETURN;
-
- static event_fatal_cb fatal_fn = NULL;
-
- #ifdef EVENT_DEBUG_LOGGING_ENABLED
- #ifdef USE_DEBUG
- #define DEFAULT_MASK EVENT_DBG_ALL
- #else
- #define DEFAULT_MASK 0
- #endif
-
- EVENT2_EXPORT_SYMBOL ev_uint32_t event_debug_logging_mask_ = DEFAULT_MASK;
- #endif /* EVENT_DEBUG_LOGGING_ENABLED */
-
- void
- event_enable_debug_logging(ev_uint32_t which)
- {
- #ifdef EVENT_DEBUG_LOGGING_ENABLED
- event_debug_logging_mask_ = which;
- #endif
- }
-
- void
- event_set_fatal_callback(event_fatal_cb cb)
- {
- fatal_fn = cb;
- }
-
- static void
- event_exit(int errcode)
- {
- if (fatal_fn) {
- fatal_fn(errcode);
- exit(errcode); /* should never be reached */
- } else if (errcode == EVENT_ERR_ABORT_)
- abort();
- else
- exit(errcode);
- }
-
- void
- event_err(int eval, const char *fmt, ...)
- {
- va_list ap;
-
- va_start(ap, fmt);
- event_logv_(EVENT_LOG_ERR, strerror(errno), fmt, ap);
- va_end(ap);
- event_exit(eval);
- }
-
- void
- event_warn(const char *fmt, ...)
- {
- va_list ap;
-
- va_start(ap, fmt);
- event_logv_(EVENT_LOG_WARN, strerror(errno), fmt, ap);
- va_end(ap);
- }
-
- void
- event_sock_err(int eval, evutil_socket_t sock, const char *fmt, ...)
- {
- va_list ap;
- int err = evutil_socket_geterror(sock);
-
- va_start(ap, fmt);
- event_logv_(EVENT_LOG_ERR, evutil_socket_error_to_string(err), fmt, ap);
- va_end(ap);
- event_exit(eval);
- }
-
- void
- event_sock_warn(evutil_socket_t sock, const char *fmt, ...)
- {
- va_list ap;
- int err = evutil_socket_geterror(sock);
-
- va_start(ap, fmt);
- event_logv_(EVENT_LOG_WARN, evutil_socket_error_to_string(err), fmt, ap);
- va_end(ap);
- }
-
- void
- event_errx(int eval, const char *fmt, ...)
- {
- va_list ap;
-
- va_start(ap, fmt);
- event_logv_(EVENT_LOG_ERR, NULL, fmt, ap);
- va_end(ap);
- event_exit(eval);
- }
-
- void
- event_warnx(const char *fmt, ...)
- {
- va_list ap;
-
- va_start(ap, fmt);
- event_logv_(EVENT_LOG_WARN, NULL, fmt, ap);
- va_end(ap);
- }
-
- void
- event_msgx(const char *fmt, ...)
- {
- va_list ap;
-
- va_start(ap, fmt);
- event_logv_(EVENT_LOG_MSG, NULL, fmt, ap);
- va_end(ap);
- }
-
- void
- event_debugx_(const char *fmt, ...)
- {
- va_list ap;
-
- va_start(ap, fmt);
- event_logv_(EVENT_LOG_DEBUG, NULL, fmt, ap);
- va_end(ap);
- }
-
- void
- event_logv_(int severity, const char *errstr, const char *fmt, va_list ap)
- {
- char buf[1024];
- size_t len;
-
- if (severity == EVENT_LOG_DEBUG && !event_debug_get_logging_mask_())
- return;
-
- if (fmt != NULL)
- evutil_vsnprintf(buf, sizeof(buf), fmt, ap);
- else
- buf[0] = '\0';
-
- if (errstr) {
- len = strlen(buf);
- if (len < sizeof(buf) - 3) {
- evutil_snprintf(buf + len, sizeof(buf) - len, ": %s", errstr);
- }
- }
-
- event_log(severity, buf);
- }
-
- static event_log_cb log_fn = NULL;
-
- void
- event_set_log_callback(event_log_cb cb)
- {
- log_fn = cb;
- }
-
- static void
- event_log(int severity, const char *msg)
- {
- if (log_fn)
- log_fn(severity, msg);
- else {
- const char *severity_str;
- switch (severity) {
- case EVENT_LOG_DEBUG:
- severity_str = "debug";
- break;
- case EVENT_LOG_MSG:
- severity_str = "msg";
- break;
- case EVENT_LOG_WARN:
- severity_str = "warn";
- break;
- case EVENT_LOG_ERR:
- severity_str = "err";
- break;
- default:
- severity_str = "???";
- break;
- }
- (void)fprintf(stderr, "[%s] %s\n", severity_str, msg);
- }
- }
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