154 lines
3.5 KiB
C
154 lines
3.5 KiB
C
/* $OpenBSD: log.c,v 1.12 2015/12/11 18:49:39 nicm Exp $ */
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/*
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* log.c
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*
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* Based on err.c, which was adapted from OpenBSD libc *err* *warn* code.
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*
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* Copyright (c) 2005 Nick Mathewson <nickm@freehaven.net>
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*
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* Copyright (c) 2000 Dug Song <dugsong@monkey.org>
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*
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* Copyright (c) 1993
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/types.h>
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#include <sys/time.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <stdarg.h>
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#include <string.h>
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#include <errno.h>
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#include "event.h"
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#include "log.h"
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static void _warn_helper(int severity, int log_errno, const char *fmt,
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va_list ap);
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static void event_log(int severity, const char *msg);
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void
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event_err(int eval, const char *fmt, ...)
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{
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va_list ap;
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va_start(ap, fmt);
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_warn_helper(_EVENT_LOG_ERR, errno, fmt, ap);
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va_end(ap);
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exit(eval);
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}
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void
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event_warn(const char *fmt, ...)
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{
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va_list ap;
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va_start(ap, fmt);
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_warn_helper(_EVENT_LOG_WARN, errno, fmt, ap);
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va_end(ap);
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}
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void
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event_errx(int eval, const char *fmt, ...)
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{
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va_list ap;
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va_start(ap, fmt);
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_warn_helper(_EVENT_LOG_ERR, -1, fmt, ap);
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va_end(ap);
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exit(eval);
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}
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void
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event_warnx(const char *fmt, ...)
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{
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va_list ap;
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va_start(ap, fmt);
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_warn_helper(_EVENT_LOG_WARN, -1, fmt, ap);
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va_end(ap);
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}
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void
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event_msgx(const char *fmt, ...)
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{
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va_list ap;
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va_start(ap, fmt);
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_warn_helper(_EVENT_LOG_MSG, -1, fmt, ap);
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va_end(ap);
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}
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void
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_event_debugx(const char *fmt, ...)
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{
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va_list ap;
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va_start(ap, fmt);
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_warn_helper(_EVENT_LOG_DEBUG, -1, fmt, ap);
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va_end(ap);
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}
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static void
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_warn_helper(int severity, int log_errno, const char *fmt, va_list ap)
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{
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char buf[1024];
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size_t len;
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if (fmt != NULL)
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vsnprintf(buf, sizeof(buf), fmt, ap);
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else
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buf[0] = '\0';
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if (log_errno >= 0) {
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len = strlen(buf);
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if (len < sizeof(buf) - 3) {
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snprintf(buf + len, sizeof(buf) - len, ": %s",
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strerror(log_errno));
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}
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}
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event_log(severity, buf);
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}
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static event_log_cb log_fn = NULL;
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void
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event_set_log_callback(event_log_cb cb)
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{
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log_fn = cb;
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}
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static void
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event_log(int severity, const char *msg)
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{
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if (log_fn)
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log_fn(severity, msg);
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}
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