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/*
* Copyright (C) 2008, Nokia <ivan.frade@nokia.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#include "config.h"
#include <sys/time.h>
#include <sys/resource.h>
#include <sys/types.h>
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <errno.h>
#include <glib/gstdio.h>
#include "tracker-log.h"
#include "tracker-file-utils.h"
static gboolean initialized;
static FILE *fd;
static gint verbosity;
static guint log_handler_id;
static guint libmediaart_log_handler_id;
static gboolean use_log_files;
static GMutex mutex;
static inline void
log_output (const gchar *domain,
GLogLevelFlags log_level,
const gchar *message)
{
time_t now;
gchar time_str[64];
gchar *output;
struct tm *local_time;
const gchar *log_level_str;
static gsize size = 0;
g_return_if_fail (initialized == TRUE);
g_return_if_fail (message != NULL && message[0] != '\0');
/* Ensure file logging is thread safe */
g_mutex_lock (&mutex);
/* Check log size, 10MiB limit */
if (size > (10 << 20) && fd) {
rewind (fd);
if (ftruncate (fileno (fd), 0) != 0) {
/* FIXME: What should we do if this fails? */
}
size = 0;
}
now = time ((time_t *) NULL);
local_time = localtime (&now);
strftime (time_str, 64, "%d %b %Y, %H:%M:%S:", local_time);
switch (log_level) {
case G_LOG_LEVEL_WARNING:
log_level_str = "-Warning **";
break;
case G_LOG_LEVEL_CRITICAL:
log_level_str = "-Critical **";
break;
case G_LOG_LEVEL_ERROR:
log_level_str = "-Error **";
break;
case G_LOG_FLAG_RECURSION:
case G_LOG_FLAG_FATAL:
case G_LOG_LEVEL_MESSAGE:
case G_LOG_LEVEL_INFO:
case G_LOG_LEVEL_DEBUG:
case G_LOG_LEVEL_MASK:
default:
log_level_str = NULL;
break;
}
output = g_strdup_printf ("%s%s %s%s: %s",
log_level_str ? "\n" : "",
time_str,
domain,
log_level_str ? log_level_str : "",
message);
if (G_UNLIKELY (fd == NULL)) {
FILE *f;
if (log_level == G_LOG_LEVEL_WARNING ||
log_level == G_LOG_LEVEL_CRITICAL ||
log_level == G_LOG_LEVEL_ERROR) {
f = stderr;
} else {
f = stdout;
}
g_fprintf (f, "%s\n", output);
fflush (f);
} else {
size += g_fprintf (fd, "%s\n", output);
fflush (fd);
}
g_free (output);
g_mutex_unlock (&mutex);
}
static void
tracker_log_handler (const gchar *domain,
GLogLevelFlags log_level,
const gchar *message,
gpointer user_data)
{
/* Unless enabled, we don't log to file by default */
if (use_log_files) {
log_output (domain, log_level, message);
}
/* Now show the message through stdout/stderr as usual */
g_log_default_handler (domain, log_level, message, user_data);
}
static void
hide_log_handler (const gchar *domain,
GLogLevelFlags log_level,
const gchar *message,
gpointer user_data)
{
/* do nothing */
}
gboolean
tracker_log_init (gint this_verbosity,
gchar **used_filename)
{
const gchar *env_use_log_files;
const gchar *env_verbosity;
GLogLevelFlags hide_levels = 0;
if (initialized) {
return TRUE;
}
env_use_log_files = g_getenv ("TRACKER_USE_LOG_FILES");
if (env_use_log_files != NULL) {
/* When set we use:
* ~/.local/share/Tracker/
* Otherwise, we either of the following:
* ~/.xsession-errors
* ~/.cache/gdm/session.log
* systemd journal
* Depending on the system.
*/
use_log_files = TRUE;
}
env_verbosity = g_getenv ("TRACKER_VERBOSITY");
if (env_verbosity != NULL) {
this_verbosity = atoi (env_verbosity);
} else {
gchar *verbosity_string;
/* make sure libtracker-sparql uses the same verbosity setting */
verbosity_string = g_strdup_printf ("%d", this_verbosity);
g_setenv ("TRACKER_VERBOSITY", verbosity_string, FALSE);
g_free (verbosity_string);
}
/* If we have debug enabled, we imply G_MESSAGES_DEBUG or we
* see nothing, this came in since GLib 2.32.
*/
if (this_verbosity > 1) {
g_setenv ("G_MESSAGES_DEBUG", "all", TRUE);
}
if (use_log_files) {
gchar *basename;
gchar *filename;
basename = g_strdup_printf ("%s.log", g_get_application_name ());
filename = g_build_filename (g_get_user_data_dir (),
"tracker",
basename,
NULL);
g_free (basename);
/* Open file */
fd = g_fopen (filename, "a");
if (!fd) {
const gchar *error_string;
error_string = g_strerror (errno);
g_fprintf (stderr,
"Could not open log:'%s', %s\n",
filename,
error_string);
g_fprintf (stderr,
"All logging will go to stderr\n");
use_log_files = TRUE;
}
if (used_filename) {
*used_filename = filename;
} else {
g_free (filename);
}
} else {
*used_filename = NULL;
}
verbosity = CLAMP (this_verbosity, 0, 3);
g_mutex_init (&mutex);
switch (this_verbosity) {
/* Log level 3: EVERYTHING */
case 3:
break;
/* Log level 2: CRITICAL/ERROR/WARNING/INFO/MESSAGE only */
case 2:
hide_levels = G_LOG_LEVEL_DEBUG;
break;
/* Log level 1: CRITICAL/ERROR/WARNING/INFO only */
case 1:
hide_levels = G_LOG_LEVEL_DEBUG |
G_LOG_LEVEL_MESSAGE;
break;
/* Log level 0: CRITICAL/ERROR/WARNING only (default) */
default:
case 0:
hide_levels = G_LOG_LEVEL_DEBUG |
G_LOG_LEVEL_MESSAGE |
G_LOG_LEVEL_INFO;
break;
}
if (hide_levels) {
/* Hide log levels according to configuration */
log_handler_id = g_log_set_handler (G_LOG_DOMAIN,
hide_levels,
hide_log_handler,
NULL);
libmediaart_log_handler_id = g_log_set_handler ("libmediaart",
hide_levels,
hide_log_handler,
NULL);
}
/* Set log handler function for the rest */
g_log_set_default_handler (tracker_log_handler, NULL);
initialized = TRUE;
/* log binary name and version */
g_message ("Starting %s %s", g_get_application_name (), PACKAGE_VERSION);
return TRUE;
}
void
tracker_log_shutdown (void)
{
if (!initialized) {
return;
}
g_message ("Stopping %s %s", g_get_application_name (), PACKAGE_VERSION);
/* Reset default log handler */
g_log_set_default_handler (g_log_default_handler, NULL);
if (log_handler_id) {
g_log_remove_handler (G_LOG_DOMAIN, log_handler_id);
log_handler_id = 0;
}
if (libmediaart_log_handler_id) {
g_log_remove_handler ("libmediaart", libmediaart_log_handler_id);
libmediaart_log_handler_id = 0;
}
if (use_log_files && fd != NULL) {
fclose (fd);
}
g_mutex_clear (&mutex);
initialized = FALSE;
}
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