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/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 8 -*-
*
* Copyright (C) 2007 William Jon McCann <mccann@jhu.edu>
*
* 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.
*
* Authors: William Jon McCann <mccann@jhu.edu>
*
*/
#include "config.h"
#include <stdio.h>
#include <string.h>
#include <stdarg.h>
#include <signal.h>
#include <time.h>
#include <unistd.h>
#include <syslog.h>
#ifdef WITH_SYSTEMD
#include <systemd/sd-daemon.h>
#endif
#include <glib.h>
#include <glib/gstdio.h>
#include "gdm-log.h"
static gboolean initialized = FALSE;
static gboolean is_sd_booted = FALSE;
static gboolean debug_enabled = FALSE;
static gint
get_syslog_priority_from_log_level (GLogLevelFlags log_level)
{
switch (log_level & G_LOG_LEVEL_MASK) {
case G_LOG_FLAG_FATAL:
return LOG_EMERG;
case G_LOG_LEVEL_ERROR:
/* fatal error - a critical error, in the syslog world */
return LOG_CRIT;
case G_LOG_LEVEL_CRITICAL:
/* critical warning - an error, in the syslog world */
return LOG_ERR;
case G_LOG_LEVEL_WARNING:
case G_LOG_LEVEL_MESSAGE:
return LOG_NOTICE;
case G_LOG_LEVEL_INFO:
return LOG_INFO;
case G_LOG_LEVEL_DEBUG:
default:
return LOG_DEBUG;
}
}
static void
gdm_log_default_handler (const gchar *log_domain,
GLogLevelFlags log_level,
const gchar *message,
gpointer unused_data)
{
int priority;
gdm_log_init ();
if ((log_level & G_LOG_LEVEL_MASK) == G_LOG_LEVEL_DEBUG &&
!debug_enabled) {
return;
}
/* Process the message prefix and priority */
priority = get_syslog_priority_from_log_level (log_level);
if (is_sd_booted) {
fprintf (stderr,
"<%d>%s%s%s\n",
priority,
log_domain != NULL? log_domain : "",
log_domain != NULL? ": " : "",
message);
fflush (stderr);
} else {
syslog (priority,
"%s%s%s\n",
log_domain != NULL? log_domain : "",
log_domain != NULL? ": " : "",
message);
}
}
void
gdm_log_toggle_debug (void)
{
gdm_log_set_debug (!debug_enabled);
}
void
gdm_log_set_debug (gboolean debug)
{
g_assert (initialized);
if (debug_enabled == debug) {
return;
}
if (debug) {
debug_enabled = debug;
g_debug ("Enabling debugging");
} else {
g_debug ("Disabling debugging");
debug_enabled = debug;
}
}
void
gdm_log_init (void)
{
const char *prg_name;
int options;
if (initialized)
return;
initialized = TRUE;
#ifdef WITH_SYSTEMD
is_sd_booted = sd_booted () > 0;
#endif
g_log_set_default_handler (gdm_log_default_handler, NULL);
/* Only set up syslog if !systemd, otherwise with systemd
* enabled, we keep the default GLib log handler which goes to
* stderr, which is routed to the appropriate place in the
* systemd service file.
*/
if (!is_sd_booted) {
prg_name = g_get_prgname ();
options = LOG_PID;
#ifdef LOG_PERROR
options |= LOG_PERROR;
#endif
openlog (prg_name, options, LOG_DAEMON);
}
}
void
gdm_log_shutdown (void)
{
if (!initialized)
return;
if (!is_sd_booted)
closelog ();
initialized = FALSE;
}
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