Fix parsing of lua tables.

src/lua/lua_common.c

@@ -629,10 +629,10 @@ rspamd_lua_parse_table_arguments (lua_State *L, gint pos,
 				state = read_arg;
 				keylen = p - key;
 			}
-			else if (*p == '*') {
+			else if (*p == '*' && key == NULL) {
 				required = TRUE;
 			}
-			else {
+			else if (key == NULL) {
 				key = p;
 			}
 			p ++;
@@ -787,15 +787,16 @@ rspamd_lua_parse_table_arguments (lua_State *L, gint pos,
 			break;
 
 		case read_semicolon:
-			if (*p == ':') {
+			if (*p == ';' || p == end) {
 				state = read_key;
 				key = NULL;
 				keylen = 0;
 				failed = FALSE;
 			}
 			else {
-				g_set_error (err, lua_error_quark (), 2, "bad format string: %s",
-						extraction_pattern);
+				g_set_error (err, lua_error_quark (), 2, "bad format string: %s,"
+								" at char %c, position %d",
+						extraction_pattern, *p, (int)(p - extraction_pattern));
 				va_end (ap);
 
 				return FALSE;

src/lua/lua_config.c

@@ -1220,7 +1220,7 @@ lua_config_set_metric_symbol (lua_State * L)
 
 		if (lua_type (L, 2) == LUA_TTABLE) {
 			if (!rspamd_lua_parse_table_arguments (L, 2, &err,
-					"name=*S;score=N;description=S;"
+					"*name=S;score=N;description=S;"
 					"group=S;one_shot=B;metric=S",
 					&name, &weight, &description,
 					&group, &one_shot, &metric_name)) {
@@ -1248,12 +1248,16 @@ lua_config_set_metric_symbol (lua_State * L)
 			}
 		}
 
+		if (metric_name == NULL) {
+			metric_name = DEFAULT_METRIC;
+		}
+
 		metric = g_hash_table_lookup (cfg->metrics, metric_name);
 
 		if (metric == NULL) {
 			msg_err_config ("metric named %s is not defined", metric_name);
 		}
-		else if (name != NULL && weight > 0) {
+		else if (name != NULL && weight != 0) {
 			rspamd_config_add_metric_symbol (cfg, metric_name, name,
 					weight, description, group, one_shot, FALSE);
 		}