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/*
* Copyright (c) 2017-2019 Cisco and/or its affiliates.
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "log.h"
#include <stdarg.h>
#include <stdlib.h>
#include <stdio.h>
log_conf_t log_conf = DEFAULT_LOG_CONF;
#define FMT_DATETIME "%02d-%02d-%04d %02d:%02d:%02d"
#define FMT_DATETIME_LEN 20
#define snprintf_nowarn(...) (snprintf(__VA_ARGS__) < 0 ? abort() : (void)0)
static char ts[FMT_DATETIME_LEN];
static char *timestamp(void)
{
time_t tv;
struct tm *tm;
time(&tv);
tm = localtime(&tv);
snprintf_nowarn(ts, FMT_DATETIME_LEN, FMT_DATETIME, tm->tm_mday,
tm->tm_mon + 1, tm->tm_year + 1900, tm->tm_hour, tm->tm_min,
tm->tm_sec);
return ts;
}
void _log_va(int level, const char *fmt, va_list ap)
{
char *prefix;
FILE *f = log_conf.log_file ? log_conf.log_file : stdout;
#if 0
if (!conf.log_system)
return;
#endif
if (level > log_conf.log_level)
return;
switch (level) {
case LOG_FATAL:
prefix = "FATAL: ";
break;
case LOG_ERROR:
prefix = "ERROR: ";
break;
case LOG_WARN:
prefix = "WARNING: ";
break;
case LOG_INFO:
prefix = "";
break;
case LOG_DEBUG:
prefix = "DEBUG: ";
break;
case LOG_TRACE:
prefix = "TRACE: ";
break;
default:
prefix = "";
break;
}
fprintf(f, "%s %s", timestamp(), prefix);
vfprintf(f, fmt, ap);
fprintf(f, "\n");
#ifdef DEBUG
fflush(f);
#endif
}
void _log(int level, const char *fmt, ...)
{
va_list ap;
va_start(ap, fmt);
_log_va(level, fmt, ap);
va_end(ap);
}
#ifdef HAVE_BACKTRACE
#include <execinfo.h>
void print_trace(void)
{
void *array[32];
size_t size;
size = backtrace(array, 32);
fflush(conf.log_file);
backtrace_symbols_fd(array, size, fileno(conf.log_file));
}
#endif
void fatal(char *fmt, ...)
{
va_list ap;
va_start(ap, fmt);
_log_va(LOG_FATAL, fmt, ap);
va_end(ap);
#ifdef HAVE_BACKTRACE
print_trace();
#endif
exit(200);
}
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