permissions: re-init db connection for reload cmd

- some workers for specific mi/rpc commands may not have a db connection from the start

modules/permissions/address.c

@@ -253,6 +253,31 @@ dberror:
 	return -1;
 }
 
+/*
+ * Wrapper to reload addr table from mi or rpc
+ * we need to open the db_handle
+ */
+int reload_address_table_cmd(void)
+{
+	if (!db_handle) {
+		db_handle = perm_dbf.init(&db_url);
+		if (!db_handle) {
+			LM_ERR("unable to connect database\n");
+			return -1;
+		}
+	}
+
+	if (reload_address_table () != 1) {
+		perm_dbf.close(db_handle);
+		db_handle = 0;
+		return -1;
+	}
+
+	perm_dbf.close(db_handle);
+	db_handle = 0;
+
+	return 1;
+}
 
 /*
  * Initialize data structures

modules/permissions/address.h

@@ -55,6 +55,11 @@ int mi_init_addresses(void);
  */
 int reload_address_table(void);
 
+/*
+ * Wrapper to reload addr table from mi or rpc
+ * we need to open the db_handle
+ */
+int reload_address_table_cmd(void);
 
 /*
  * Close connections and release memory

modules/permissions/mi.c

@@ -114,7 +114,7 @@ void rpc_trusted_dump(rpc_t* rpc, void* c) {
  */
 struct mi_root* mi_address_reload(struct mi_root *cmd_tree, void *param)
 {
-    if (reload_address_table () == 1) {
+    if (reload_address_table_cmd () == 1) {
 	return init_mi_tree( 200, MI_SSTR(MI_OK));
     } else {
 	return init_mi_tree( 400, MI_SSTR("Address table reload failed"));
@@ -125,7 +125,7 @@ struct mi_root* mi_address_reload(struct mi_root *cmd_tree, void *param)
  * RPC function to reload address table
  */
 void rpc_address_reload(rpc_t* rpc, void* c) {
-	if (reload_address_table () != 1) {
+	if (reload_address_table_cmd () != 1) {
 		rpc->fault(c, 500, "Reload failed.");
 		return;
 	}