Allow single string to be in a string list.

src/libserver/cfg_rcl.c

@@ -1864,41 +1864,49 @@ rspamd_rcl_parse_struct_string_list (struct rspamd_config *cfg,
 
 	target = (GList **)(((gchar *)pd->user_struct) + pd->offset);
 
-	if (obj->type != UCL_ARRAY) {
-		g_set_error (err,
-			CFG_RCL_ERROR,
-			EINVAL,
-			"an array of strings is expected");
-		return FALSE;
+	if (obj->type == UCL_STRING) {
+		/* Just a single string */
+		val = rspamd_mempool_strdup (cfg->cfg_pool,
+			ucl_copy_value_trash (obj));
+		*target = g_list_prepend (*target, val);
 	}
-
-	while ((cur = ucl_iterate_object (obj, &iter, true)) != NULL) {
-		switch (cur->type) {
-		case UCL_STRING:
-			val =
-				rspamd_mempool_strdup (cfg->cfg_pool,
-					ucl_copy_value_trash (cur));
-			break;
-		case UCL_INT:
-			val = rspamd_mempool_alloc (cfg->cfg_pool, num_str_len);
-			rspamd_snprintf (val, num_str_len, "%L", cur->value.iv);
-			break;
-		case UCL_FLOAT:
-			val = rspamd_mempool_alloc (cfg->cfg_pool, num_str_len);
-			rspamd_snprintf (val, num_str_len, "%f", cur->value.dv);
-			break;
-		case UCL_BOOLEAN:
-			val = rspamd_mempool_alloc (cfg->cfg_pool, num_str_len);
-			rspamd_snprintf (val, num_str_len, "%b", (gboolean)cur->value.iv);
-			break;
-		default:
-			g_set_error (err,
+	else if (obj->type == UCL_ARRAY) {
+
+		while ((cur = ucl_iterate_object (obj, &iter, true)) != NULL) {
+			switch (cur->type) {
+			case UCL_STRING:
+				val =
+						rspamd_mempool_strdup (cfg->cfg_pool,
+								ucl_copy_value_trash (cur));
+				break;
+			case UCL_INT:
+				val = rspamd_mempool_alloc (cfg->cfg_pool, num_str_len);
+				rspamd_snprintf (val, num_str_len, "%L", cur->value.iv);
+				break;
+			case UCL_FLOAT:
+				val = rspamd_mempool_alloc (cfg->cfg_pool, num_str_len);
+				rspamd_snprintf (val, num_str_len, "%f", cur->value.dv);
+				break;
+			case UCL_BOOLEAN:
+				val = rspamd_mempool_alloc (cfg->cfg_pool, num_str_len);
+				rspamd_snprintf (val, num_str_len, "%b", (gboolean)cur->value.iv);
+				break;
+			default:
+				g_set_error (err,
+						CFG_RCL_ERROR,
+						EINVAL,
+						"cannot convert an object or array to string");
+				return FALSE;
+			}
+			*target = g_list_prepend (*target, val);
+		}
+	}
+	else {
+		g_set_error (err,
 				CFG_RCL_ERROR,
 				EINVAL,
-				"cannot convert an object or array to string");
-			return FALSE;
-		}
-		*target = g_list_prepend (*target, val);
+				"an array of strings is expected");
+		return FALSE;
 	}
 
 	/* Add a destructor */