/*

* logging functions

*

* Copyright (C) 2016 LastPass.

*

* This program 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 2 of the License, or

* (at your option) any later version.

*

* This program 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 this program; if not, write to the Free Software Foundation, Inc.,

* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.

*

* In addition, as a special exception, the copyright holders give

* permission to link the code of portions of this program with the

* OpenSSL library under certain conditions as described in each

* individual source file, and distribute linked combinations

* including the two.

*

* You must obey the GNU General Public License in all respects

* for all of the code used other than OpenSSL. If you modify

* file(s) with this exception, you may extend this exception to your

* version of the file(s), but you are not obligated to do so. If you

* do not wish to do so, delete this exception statement from your

* version. If you delete this exception statement from all source

* files in the program, then also delete it here.

*

* See LICENSE.OpenSSL for more details regarding this exception.

*/

#include "util.h"

#include "log.h"

#include "config.h"

#include <fcntl.h>

#include <sys/time.h>

#define TIME_FMT "%lld.%06lld"

#define TIME_ARGS(tv) ((long long)(tv)->tv_sec), ((long long)(tv)->tv_usec)

int lpass_log_level()

{

char *log_level_str;

int level;

log_level_str = getenv("LPASS_LOG_LEVEL");

if (!log_level_str)

return LOG_NONE;

level = strtoul(log_level_str, NULL, 10);

return (enum log_level) level;

}

void lpass_log(enum log_level level, char *fmt, ...)

{

struct timeval tv;

struct timezone tz;

va_list ap;

_cleanup_fclose_ FILE *fp = NULL;

int req_level = lpass_log_level();

if (req_level < level)

return;

fp = lpass_log_open();

if (!fp)

return;

gettimeofday(&tv, &tz);

fprintf(fp, "<%d> [" TIME_FMT "] ", level, TIME_ARGS(&tv));

va_start(ap, fmt);

vfprintf(fp, fmt, ap);

va_end(ap);

fflush(fp);

}

FILE *lpass_log_open()

{

_cleanup_free_ char *upload_log_path = NULL;

if (lpass_log_level() < 0)

return NULL;

upload_log_path = config_path("lpass.log");

return fopen(upload_log_path, "a");

}