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/*
* Copyright (c) 2015-2019 Red Hat, Inc.
*
* All rights reserved.
*
* Author: Jan Friesse (jfriesse@redhat.com)
*
* This software licensed under BSD license, the text of which follows:
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* - Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* - 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.
* - Neither the name of the Red Hat, Inc. 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 COPYRIGHT HOLDERS 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 COPYRIGHT OWNER 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 <stdlib.h>
#include <syslog.h>
#include <stdio.h>
#include <string.h>
#include <time.h>
#include "log.h"
static int log_config_target = 0;
static int log_config_debug = 0;
static int log_config_priority_bump = 0;
static int log_config_syslog_facility = 0;
static char *log_config_ident = NULL;
static const char log_month_str[][4] = {
"Jan", "Feb", "Mar", "Apr", "May", "Jun",
"Jul", "Aug", "Sep", "Oct", "Nov", "Dec"
};
struct log_syslog_prio_to_str_item {
int priority;
const char *priority_str;
};
static struct log_syslog_prio_to_str_item syslog_prio_to_str_array[] = {
{LOG_EMERG, "emerg"},
{LOG_ALERT, "alert"},
{LOG_CRIT, "crit"},
{LOG_ERR, "error"},
{LOG_WARNING, "warning"},
{LOG_NOTICE, "notice"},
{LOG_INFO, "info"},
{LOG_DEBUG, "debug"},
{-1, NULL}};
int
log_init(const char *ident, int target, int syslog_facility)
{
free(log_config_ident);
log_config_ident = strdup(ident);
if (log_config_ident == NULL) {
return (-1);
}
log_set_target(target, syslog_facility);
return (0);
}
static const char *
log_syslog_prio_to_str(int priority)
{
if (priority >= LOG_EMERG && priority <= LOG_DEBUG) {
return (syslog_prio_to_str_array[priority].priority_str);
} else {
return ("none");
}
}
void
log_vprintf(int priority, const char *format, va_list ap)
{
time_t current_time;
struct tm tm_res;
int final_priority;
va_list ap_copy;
if (priority != LOG_DEBUG || (log_config_debug)) {
if (log_config_target & LOG_TARGET_STDERR) {
current_time = time(NULL);
localtime_r(¤t_time, &tm_res);
fprintf(stderr, "%s %02d %02d:%02d:%02d ",
log_month_str[tm_res.tm_mon], tm_res.tm_mday, tm_res.tm_hour,
tm_res.tm_min, tm_res.tm_sec);
fprintf(stderr, "%-7s ", log_syslog_prio_to_str(priority));
va_copy(ap_copy, ap);
vfprintf(stderr, format, ap_copy);
va_end(ap_copy);
fprintf(stderr, "\n");
}
if (log_config_target & LOG_TARGET_SYSLOG) {
final_priority = priority;
if (log_config_priority_bump && priority > LOG_INFO) {
final_priority = LOG_INFO;
}
va_copy(ap_copy, ap);
vsyslog(final_priority, format, ap);
va_end(ap_copy);
}
}
}
void
log_printf(int priority, const char *format, ...)
{
va_list ap;
va_start(ap, format);
log_vprintf(priority, format, ap);
va_end(ap);
}
void
log_close(void)
{
if (log_config_target & LOG_TARGET_SYSLOG) {
closelog();
}
free(log_config_ident);
log_config_ident = NULL;
}
void
log_set_debug(int enabled)
{
log_config_debug = enabled;
}
void
log_set_priority_bump(int enabled)
{
log_config_priority_bump = enabled;
}
void
log_set_target(int target, int syslog_facility)
{
if (log_config_target & LOG_TARGET_SYSLOG) {
closelog();
}
log_config_target = target;
log_config_syslog_facility = syslog_facility;
if (log_config_target & LOG_TARGET_SYSLOG) {
openlog(log_config_ident, LOG_PID, log_config_syslog_facility);
}
}
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