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/* logger.c
*
* Wrapping logger functions in nice macros
*
* Copyright (C) 2013 Tox project All Rights Reserved.
*
* This file is part of Tox.
*
* Tox is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* Tox is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with Tox. If not, see <http://www.gnu.org/licenses/>.
*
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif /* HAVE_CONFIG_H */
#include "logger.h"
#ifdef LOGGING
#include "network.h" /* for time */
#include <stdio.h>
#include <errno.h>
#include <stdlib.h>
#include <stdarg.h>
#include <inttypes.h>
#include <time.h>
#if defined(_WIN32) || defined(__WIN32__) || defined (WIN32)
#define strerror_r(errno,buf,len) strerror_s(buf,len,errno)
#endif
static struct logger_config {
FILE* log_file;
LoggerLevel level;
uint64_t start_time; /* Time when lib loaded */
}
logger = {
NULL,
DEBUG,
0
};
void __attribute__((destructor)) terminate_logger()
{
if ( !logger.log_file ) return;
time_t tim = time(NULL);
logger_write(ERROR, "============== Closing logger ==============\n"
"Time: %s", asctime(localtime(&tim)));
fclose(logger.log_file);
}
unsigned logger_get_pid()
{
return
#if defined(_WIN32) || defined(__WIN32__) || defined (WIN32)
GetCurrentProcessId();
#else
getpid();
#endif
}
const char* logger_stringify_level(LoggerLevel level)
{
static const char* strings [] =
{
"INFO",
"DEBUG",
"WARNING",
"ERROR"
};
return strings[level];
}
int logger_init(const char* file_name, LoggerLevel level)
{
char* final_l = calloc(sizeof(char), strlen(file_name) + 32);
sprintf(final_l, "%s"/*.%u"*/, file_name, logger_get_pid());
if ( logger.log_file ) {
fprintf(stderr, "Error opening logger name: %s with level %d: already opened!\n", final_l, level);
free (final_l);
return -1;
}
logger.log_file = fopen(final_l, "wb");
if ( logger.log_file == NULL ) {
char error[1000];
if ( strerror_r(errno, error, 1000) == 0 )
fprintf(stderr, "Error opening logger file: %s; info: %s\n", final_l, error);
else
fprintf(stderr, "Error opening logger file: %s\n", final_l);
free (final_l);
return -1;
}
logger.level = level;
logger.start_time = current_time();
time_t tim = time(NULL);
logger_write(ERROR, "============== Starting logger ==============\n"
"Time: %s", asctime(localtime(&tim)));
free (final_l);
return 0;
}
void logger_write (LoggerLevel level, const char* format, ...)
{
if (logger.log_file == NULL) {
/*fprintf(stderr, "Logger file is NULL!\n");*/
return;
}
if (logger.level > level) return; /* Don't print some levels xuh */
va_list _arg;
va_start (_arg, format);
vfprintf (logger.log_file, format, _arg);
va_end (_arg);
fflush(logger.log_file);
}
char* logger_timestr(char* dest)
{
uint64_t diff = (current_time() - logger.start_time) / 1000; /* ms */
sprintf(dest, "%"PRIu64"", diff);
return dest;
}
#endif /* LOGGING */
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