+ if(result)
+ return result;
+ else
+ return strcmp(a->file, b->file);
+}
+
+void init_configuration(avl_tree_t ** config_tree)
+{
+ cp();
+
+ *config_tree = avl_alloc_tree((avl_compare_t) config_compare, (avl_action_t) free_config);
+}
+
+void exit_configuration(avl_tree_t ** config_tree)
+{
+ cp();
+
+ avl_delete_tree(*config_tree);
+ *config_tree = NULL;
+}
+
+config_t *new_config(void)
+{
+ cp();
+
+ return (config_t *) xmalloc_and_zero(sizeof(config_t));
+}
+
+void free_config(config_t *cfg)
+{
+ cp();
+
+ if(cfg->variable)
+ free(cfg->variable);
+
+ if(cfg->value)
+ free(cfg->value);
+
+ if(cfg->file)
+ free(cfg->file);
+
+ free(cfg);
+}
+
+void config_add(avl_tree_t *config_tree, config_t *cfg)
+{
+ cp();
+
+ avl_insert(config_tree, cfg);
+}
+
+config_t *lookup_config(const avl_tree_t *config_tree, char *variable)
+{
+ config_t cfg, *found;
+
+ cp();
+
+ cfg.variable = variable;
+ cfg.file = "";
+ cfg.line = 0;
+
+ found = avl_search_closest_greater(config_tree, &cfg);
+
+ if(!found)
+ return NULL;
+
+ if(strcasecmp(found->variable, variable))
+ return NULL;
+
+ return found;
+}
+
+config_t *lookup_config_next(const avl_tree_t *config_tree, const config_t *cfg)
+{
+ avl_node_t *node;
+ config_t *found;
+
+ cp();
+
+ node = avl_search_node(config_tree, cfg);
+
+ if(node) {
+ if(node->next) {
+ found = (config_t *) node->next->data;
+
+ if(!strcasecmp(found->variable, cfg->variable))
+ return found;
+ }
+ }
+
+ return NULL;
+}
+
+bool get_config_bool(const config_t *cfg, bool *result)
+{
+ cp();
+
+ if(!cfg)
+ return false;
+
+ if(!strcasecmp(cfg->value, "yes")) {
+ *result = true;
+ return true;
+ } else if(!strcasecmp(cfg->value, "no")) {
+ *result = false;
+ return true;
+ }
+
+ logger(LOG_ERR, _("\"yes\" or \"no\" expected for configuration variable %s in %s line %d"),
+ cfg->variable, cfg->file, cfg->line);
+
+ return false;
+}
+
+bool get_config_int(const config_t *cfg, int *result)
+{
+ cp();
+
+ if(!cfg)
+ return false;
+
+ if(sscanf(cfg->value, "%d", result) == 1)
+ return true;
+
+ logger(LOG_ERR, _("Integer expected for configuration variable %s in %s line %d"),
+ cfg->variable, cfg->file, cfg->line);
+
+ return false;
+}
+
+bool get_config_string(const config_t *cfg, char **result)
+{
+ cp();
+
+ if(!cfg)
+ return false;
+
+ *result = xstrdup(cfg->value);
+
+ return true;
+}
+
+bool get_config_address(const config_t *cfg, struct addrinfo **result)
+{
+ struct addrinfo *ai;
+
+ cp();
+
+ if(!cfg)
+ return false;
+
+ ai = str2addrinfo(cfg->value, NULL, 0);
+
+ if(ai) {
+ *result = ai;
+ return true;
+ }
+
+ logger(LOG_ERR, _("Hostname or IP address expected for configuration variable %s in %s line %d"),
+ cfg->variable, cfg->file, cfg->line);
+
+ return false;
+}
+
+bool get_config_subnet(const config_t *cfg, subnet_t ** result)