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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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*
* Authors: William Jon McCann <mccann@jhu.edu>
*
*/
#include "config.h"
#include <stdio.h>
#include <string.h>
#include <stdarg.h>
#include <unistd.h>
#include <syslog.h>
#include <glib.h>
#include <glib/gstdio.h>
#include "ck-log.h"
static gboolean initialized = FALSE;
static int syslog_levels = (G_LOG_LEVEL_ERROR | G_LOG_LEVEL_CRITICAL | G_LOG_LEVEL_WARNING);
static void
log_level_to_priority_and_prefix (GLogLevelFlags log_level,
int *priorityp,
const char **prefixp)
{
int priority;
const char *prefix;
/* Process the message prefix and priority */
switch (log_level & G_LOG_LEVEL_MASK) {
case G_LOG_FLAG_FATAL:
priority = LOG_EMERG;
prefix = "FATAL";
break;
case G_LOG_LEVEL_ERROR:
priority = LOG_ERR;
prefix = "ERROR";
break;
case G_LOG_LEVEL_CRITICAL:
priority = LOG_CRIT;
prefix = "CRITICAL";
break;
case G_LOG_LEVEL_WARNING:
priority = LOG_WARNING;
prefix = "WARNING";
break;
case G_LOG_LEVEL_MESSAGE:
priority = LOG_NOTICE;
prefix = "MESSAGE";
break;
case G_LOG_LEVEL_INFO:
priority = LOG_INFO;
prefix = "INFO";
break;
case G_LOG_LEVEL_DEBUG:
/* if debug was requested then bump this up to ERROR
* to ensure it is seen in a log */
if (syslog_levels & G_LOG_LEVEL_DEBUG) {
priority = LOG_WARNING;
} else {
priority = LOG_DEBUG;
}
prefix = "DEBUG";
break;
default:
priority = LOG_DEBUG;
prefix = "UNKNOWN";
break;
}
if (priorityp != NULL) {
*priorityp = priority;
}
if (prefixp != NULL) {
*prefixp = prefix;
}
}
void
ck_log_default_handler (const gchar *log_domain,
GLogLevelFlags log_level,
const gchar *message,
gpointer unused_data)
{
GString *gstring;
int priority;
const char *level_prefix;
char *string;
gboolean do_log;
gboolean is_fatal;
is_fatal = (log_level & G_LOG_FLAG_FATAL) != 0;
do_log = (log_level & syslog_levels);
if (! do_log) {
return;
}
if (! initialized) {
ck_log_init ();
}
log_level_to_priority_and_prefix (log_level,
&priority,
&level_prefix);
gstring = g_string_new (NULL);
if (log_domain != NULL) {
g_string_append (gstring, log_domain);
g_string_append_c (gstring, '-');
}
g_string_append (gstring, level_prefix);
g_string_append (gstring, ": ");
if (message == NULL) {
g_string_append (gstring, "(NULL) message");
} else {
g_string_append (gstring, message);
}
if (is_fatal) {
g_string_append (gstring, "\naborting...\n");
} else {
g_string_append (gstring, "\n");
}
string = g_string_free (gstring, FALSE);
syslog (priority, "%s", string);
g_free (string);
}
void
ck_log_toggle_debug (void)
{
if (syslog_levels & G_LOG_LEVEL_DEBUG) {
g_debug ("Debugging disabled");
syslog_levels &= ~G_LOG_LEVEL_DEBUG;
} else {
syslog_levels |= G_LOG_LEVEL_DEBUG;
g_debug ("Debugging enabled");
}
}
void
ck_log_set_debug (gboolean debug)
{
if (debug) {
syslog_levels |= G_LOG_LEVEL_DEBUG;
g_debug ("Debugging enabled");
} else {
g_debug ("Debugging disabled");
syslog_levels &= ~G_LOG_LEVEL_DEBUG;
}
}
void
ck_log_init (void)
{
const char *prg_name;
int options;
g_log_set_default_handler (ck_log_default_handler, NULL);
prg_name = g_get_prgname ();
options = LOG_PID;
#ifdef LOG_PERROR
options |= LOG_PERROR;
#endif
openlog (prg_name, options, LOG_DAEMON);
initialized = TRUE;
}
void
ck_log_shutdown (void)
{
closelog ();
initialized = FALSE;
}
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