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/*
* Copyright (C) 2003-2011 Sebastien Helleu <flashcode@flashtux.org>
* Copyright (C) 2006 Emmanuel Bouthenot <kolter@openics.org>
*
* This file is part of WeeChat, the extensible chat client.
*
* WeeChat 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.
*
* WeeChat 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 WeeChat. If not, see <http://www.gnu.org/licenses/>.
*/
/*
* wee-log.c: WeeChat log file
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <stdarg.h>
#include <errno.h>
#ifdef HAVE_FLOCK
#include <sys/file.h>
#endif
#include <sys/types.h>
#include <time.h>
#include "weechat.h"
#include "wee-log.h"
#include "wee-debug.h"
#include "wee-string.h"
char *weechat_log_filename = NULL; /* log name (~/.weechat/weechat.log) */
FILE *weechat_log_file = NULL; /* WeeChat log file */
int weechat_log_use_time = 1; /* 0 to temporary disable time in log, */
/* for example when dumping data */
/*
* log_open: initialize log file
*/
int
log_open (const char *filename, const char *mode)
{
int filename_length;
/* exit if log already opened */
if (weechat_log_file)
return 0;
if (filename)
weechat_log_filename = strdup (filename);
else
{
filename_length = strlen (weechat_home) + 64;
weechat_log_filename = malloc (filename_length);
snprintf (weechat_log_filename, filename_length,
"%s/%s", weechat_home, WEECHAT_LOG_NAME);
}
weechat_log_file = fopen (weechat_log_filename, mode);
if (!weechat_log_file)
{
free (weechat_log_filename);
weechat_log_filename = NULL;
return 0;
}
#ifdef HAVE_FLOCK
if ((flock (fileno (weechat_log_file), LOCK_EX | LOCK_NB) != 0))
{
if (errno == EWOULDBLOCK)
{
fclose (weechat_log_file);
weechat_log_file = NULL;
free (weechat_log_filename);
weechat_log_filename = NULL;
return 0;
}
}
#endif
return 1;
}
/*
* log_init: initialize log file
*/
void
log_init ()
{
if (!log_open (NULL, "w"))
{
string_iconv_fprintf (stderr,
_("Error: unable to create/append to log file (weechat.log)\n"
"If another WeeChat process is using this file, try to run WeeChat\n"
"with another home using \"--dir\" command line option.\n"));
exit (1);
}
log_printf ("%s (%s %s %s)",
PACKAGE_STRING, _("compiled on"), __DATE__, __TIME__);
}
/*
* log_printf: write a message in WeeChat log (<weechat_home>/weechat.log)
*/
void
log_printf (const char *message, ...)
{
static char buffer[4096];
char *ptr_buffer;
va_list argptr;
static time_t seconds;
struct tm *date_tmp;
if (!weechat_log_file)
return;
va_start (argptr, message);
vsnprintf (buffer, sizeof (buffer) - 1, message, argptr);
va_end (argptr);
/* keep only valid chars */
ptr_buffer = buffer;
while (ptr_buffer[0])
{
if ((ptr_buffer[0] != '\n')
&& (ptr_buffer[0] != '\r')
&& ((unsigned char)(ptr_buffer[0]) < 32))
ptr_buffer[0] = '.';
ptr_buffer++;
}
if (!weechat_log_use_time)
string_iconv_fprintf (weechat_log_file, "%s\n", buffer);
else
{
seconds = time (NULL);
date_tmp = localtime (&seconds);
if (date_tmp)
string_iconv_fprintf (weechat_log_file,
"[%04d-%02d-%02d %02d:%02d:%02d] %s\n",
date_tmp->tm_year + 1900, date_tmp->tm_mon + 1,
date_tmp->tm_mday, date_tmp->tm_hour,
date_tmp->tm_min, date_tmp->tm_sec,
buffer);
else
string_iconv_fprintf (weechat_log_file, "%s\n", buffer);
}
fflush (weechat_log_file);
}
/*
* log_close: close log file
*/
void
log_close ()
{
/* close log file */
if (weechat_log_file)
{
#ifdef HAVE_FLOCK
flock (fileno (weechat_log_file), LOCK_UN);
#endif
fclose (weechat_log_file);
weechat_log_file = NULL;
}
/* free filename */
if (weechat_log_filename)
{
free (weechat_log_filename);
weechat_log_filename = NULL;
}
}
/*
* log_crash_rename: rename log file when crashing
*/
int
log_crash_rename ()
{
char *old_name, *new_name;
int length;
time_t time_now;
struct tm *local_time;
if (!weechat_log_filename)
return 0;
old_name = strdup (weechat_log_filename);
if (!old_name)
return 0;
log_close ();
length = strlen (weechat_home) + 128;
new_name = malloc (length);
if (new_name)
{
time_now = time (NULL);
local_time = localtime (&time_now);
snprintf (new_name, length,
"%s/weechat_crash_%04d%02d%02d_%d.log",
weechat_home,
local_time->tm_year + 1900,
local_time->tm_mon + 1,
local_time->tm_mday,
getpid());
if (rename (old_name, new_name) == 0)
{
string_iconv_fprintf (stderr, "*** Full crash dump was saved to %s file.\n",
new_name);
log_open (new_name, "a");
free (old_name);
free (new_name);
return 1;
}
free (new_name);
}
free (old_name);
log_open (NULL, "a");
return 0;
}
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