[Minor] check if required parameters are set when calling tcp:request()

1 files changed, 9 insertions, 2 deletions

diff --git a/src/lua/lua_tcp.c b/src/lua/lua_tcp.c
index 8d948c6d5..61a73acf8 100644
--- a/src/lua/lua_tcp.c
+++ b/src/lua/lua_tcp.c
@@ -990,10 +990,10 @@ lua_tcp_request (lua_State *L)
 	gsize plen = 0;
 	struct event_base *ev_base;
 	struct lua_tcp_cbdata *cbd;
-	struct rspamd_dns_resolver *resolver;
+	struct rspamd_dns_resolver *resolver = NULL;
 	struct rspamd_async_session *session = NULL;
 	struct rspamd_task *task = NULL;
-	struct rspamd_config *cfg;
+	struct rspamd_config *cfg = NULL;
 	struct iovec *iov = NULL;
 	guint niov = 0, total_out;
 	guint64 h;
@@ -1194,6 +1194,13 @@ lua_tcp_request (lua_State *L)
 		return 1;
 	}
 
+	if (resolver == NULL && cfg == NULL && task == NULL) {
+		msg_err ("tcp request has bad params: one of {resolver,task,config} should be set");
+		lua_pushboolean (L, FALSE);
+
+		return 1;
+	}
+
 	cbd->task = task;
 	h = rspamd_random_uint64_fast ();
 	rspamd_snprintf (cbd->tag, sizeof (cbd->tag), "%uxL", h);