+/*
+ logging.c -- log messages to e.g. syslog
+ Copyright (C) 2001-2002 Guus Sliepen <guus@sliepen.warande.net>,
+ 2001-2002 Ivo Timmermans <itimmermans@bigfoot.com>
+
+ 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., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+ $Id: logging.c,v 1.1 2002/04/13 10:25:38 zarq Exp $
+*/
+
+#include "config.h"
+
+#include <assert.h>
+#include <stdarg.h>
+#include <stdio.h>
+#include <syslog.h>
+
+#include <avl_tree.h>
+
+#include "logging.h"
+
+avl_tree_t *log_hooks_tree = NULL;
+
+int debug_lvl = 0;
+
+int log_compare(const void *a, const void *b)
+{
+ if(a < b)
+ return -1;
+ if(a > b)
+ return 1;
+ return 0;
+}
+
+void log_message(int level, int priority, char *fmt, ...)
+{
+ avl_node_t *avlnode;
+ va_list args;
+
+ va_start(args, fmt);
+ for(avlnode = log_hooks_tree->head; avlnode; avlnode = avlnode->next)
+ {
+ assert(avlnode->data);
+ ((log_function_t*)(avlnode->data))(level, priority, fmt, args);
+ }
+ va_end(args);
+}
+
+void log_add_hook(log_function_t *fn)
+{
+ if(!log_hooks_tree)
+ log_hooks_tree = avl_alloc_tree(log_compare, NULL);
+
+ avl_insert(log_hooks_tree, (void*)fn);
+}
+
+void log_del_hook(log_function_t *fn)
+{
+ avl_delete(log_hooks_tree, (void*)fn);
+}
+
+void log_default(int level, int priority, char *fmt, va_list ap)
+{
+ if(debug_lvl >= level)
+ vfprintf(stderr, fmt, ap);
+}
+
+void log_syslog(int level, int priority, char *fmt, va_list ap)
+{
+ int priorities[] = { LOG_DEBUG, LOG_INFO, LOG_NOTICE, LOG_ERR, LOG_CRIT };
+
+ if(debug_lvl >= level)
+ vsyslog(priorities[priority], fmt, ap);
+}