diff options
Diffstat (limited to 'libevent/log.c')
| -rw-r--r-- | libevent/log.c | 244 |
1 files changed, 244 insertions, 0 deletions
diff --git a/libevent/log.c b/libevent/log.c new file mode 100644 index 0000000..a9debb8 --- /dev/null +++ b/libevent/log.c @@ -0,0 +1,244 @@ +/* $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); + } +} |