networking stuff is almost working from within lua

diff --git a/lua/lua-rns.c b/lua/lua-rns.c
index c36a7be48d5ea285e82647f703ab31eb888b6803..aa1a1b9fc3fd4cdabbc23722700912caa179f338 100644 (file)
--- a/lua/lua-rns.c
+++ b/lua/lua-rns.c
@@ -222,6 +222,10 @@ static int
 l_pkt_rr_count(lua_State *L)
 {
        ldns_pkt *p = (ldns_pkt*)lua_touserdata(L, 1);
+       if (!p) {
+               return 0;
+       }
+       
        lua_pushnumber(L, ldns_pkt_section_count(p, LDNS_SECTION_ANY));
        return 1;
 }
@@ -280,6 +284,10 @@ l_client_socket_udp(lua_State *L)
        size_t socklen;
        int sockfd;
 
+       if (!ip || port == 0) {
+               return 0;
+       }
+
        /* use default timeout - maybe this gets to be configureable */
        timeout.tv_sec = LDNS_DEFAULT_TIMEOUT_SEC;
        timeout.tv_usec = LDNS_DEFAULT_TIMEOUT_USEC;
@@ -318,6 +326,10 @@ l_write_wire_udp(lua_State *L)
        struct sockaddr_storage *to;
        size_t socklen;
        ssize_t bytes;
+
+       if (!pktbuf || !rdf_to || port == 0) {
+               return 0;
+       }
        
        /* port number is handled in the socket */
        to = ldns_rdf2native_sockaddr_storage(rdf_to, port, &socklen);