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925fd94584
Suggested by: pluknet@ MFC after: 2 weeks Sponsored by: The FreeBSD Foundation
199 lines
4.8 KiB
C
199 lines
4.8 KiB
C
/*-
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* Copyright (c) 2012 The FreeBSD Foundation
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* All rights reserved.
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*
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* This software was developed by Edward Tomasz Napierala under sponsorship
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* from the FreeBSD Foundation.
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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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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <errno.h>
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#include <stdarg.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <syslog.h>
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#include <vis.h>
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#include "common.h"
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static int log_level = 0;
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static char *peer_name = NULL;
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static char *peer_addr = NULL;
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#define MSGBUF_LEN 1024
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void
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log_init(int level)
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{
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log_level = level;
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openlog(getprogname(), LOG_NDELAY | LOG_PID, LOG_DAEMON);
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}
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void
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log_set_peer_name(const char *name)
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{
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/*
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* XXX: Turn it into assertion?
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*/
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if (peer_name != NULL)
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log_errx(1, "%s called twice", __func__);
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if (peer_addr == NULL)
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log_errx(1, "%s called before log_set_peer_addr", __func__);
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peer_name = checked_strdup(name);
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}
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void
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log_set_peer_addr(const char *addr)
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{
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/*
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* XXX: Turn it into assertion?
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*/
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if (peer_addr != NULL)
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log_errx(1, "%s called twice", __func__);
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peer_addr = checked_strdup(addr);
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}
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static void
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log_common(int priority, int log_errno, const char *fmt, va_list ap)
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{
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static char msgbuf[MSGBUF_LEN];
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static char msgbuf_strvised[MSGBUF_LEN * 4 + 1];
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int ret;
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ret = vsnprintf(msgbuf, sizeof(msgbuf), fmt, ap);
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if (ret < 0) {
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fprintf(stderr, "%s: snprintf failed", getprogname());
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syslog(LOG_CRIT, "snprintf failed");
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exit(1);
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}
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ret = strnvis(msgbuf_strvised, sizeof(msgbuf_strvised), msgbuf, VIS_NL);
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if (ret < 0) {
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fprintf(stderr, "%s: strnvis failed", getprogname());
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syslog(LOG_CRIT, "strnvis failed");
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exit(1);
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}
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if (log_errno == -1) {
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if (peer_name != NULL) {
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fprintf(stderr, "%s: %s (%s): %s\n", getprogname(),
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peer_addr, peer_name, msgbuf_strvised);
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syslog(priority, "%s (%s): %s",
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peer_addr, peer_name, msgbuf_strvised);
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} else if (peer_addr != NULL) {
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fprintf(stderr, "%s: %s: %s\n", getprogname(),
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peer_addr, msgbuf_strvised);
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syslog(priority, "%s: %s",
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peer_addr, msgbuf_strvised);
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} else {
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fprintf(stderr, "%s: %s\n", getprogname(), msgbuf_strvised);
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syslog(priority, "%s", msgbuf_strvised);
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}
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} else {
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if (peer_name != NULL) {
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fprintf(stderr, "%s: %s (%s): %s: %s\n", getprogname(),
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peer_addr, peer_name, msgbuf_strvised, strerror(errno));
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syslog(priority, "%s (%s): %s: %s",
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peer_addr, peer_name, msgbuf_strvised, strerror(errno));
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} else if (peer_addr != NULL) {
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fprintf(stderr, "%s: %s: %s: %s\n", getprogname(),
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peer_addr, msgbuf_strvised, strerror(errno));
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syslog(priority, "%s: %s: %s",
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peer_addr, msgbuf_strvised, strerror(errno));
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} else {
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fprintf(stderr, "%s: %s: %s\n", getprogname(),
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msgbuf_strvised, strerror(errno));
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syslog(priority, "%s: %s",
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msgbuf_strvised, strerror(errno));
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}
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}
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}
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void
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log_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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log_common(LOG_CRIT, 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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log_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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log_common(LOG_CRIT, -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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log_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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log_common(LOG_WARNING, errno, fmt, ap);
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va_end(ap);
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}
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void
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log_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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log_common(LOG_WARNING, -1, fmt, ap);
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va_end(ap);
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}
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void
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log_debugx(const char *fmt, ...)
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{
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va_list ap;
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if (log_level == 0)
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return;
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va_start(ap, fmt);
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log_common(LOG_DEBUG, -1, fmt, ap);
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va_end(ap);
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}
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