daemon/bindings: fixed Lua <=5.1 compat and bad cast

daemon/bindings/kres.c

@@ -39,7 +39,7 @@ static lookup_table_t wire_flag_names[] = {
 
 static int pkt_flag(lua_State *L)
 {
-	knot_pkt_t *pkt = luaL_checkudata(L, 1, META_PKT);
+	knot_pkt_t *pkt = lua_touserdata(L, 1);
 	if (lua_gettop(L) > 1 && lua_isnumber(L, 2)) {
 		int flag_id = lua_tonumber(L, 2);
 		switch(flag_id) {
@@ -53,7 +53,7 @@ static int pkt_flag(lua_State *L)
 
 static int pkt_opcode(lua_State *L)
 {
-	knot_pkt_t *pkt = luaL_checkudata(L, 1, META_PKT);
+	knot_pkt_t *pkt = lua_touserdata(L, 1);
 	if (lua_gettop(L) > 1 && lua_isnumber(L, 2)) {
 		knot_wire_set_opcode(pkt->wire, lua_tonumber(L, 2));
 	}
@@ -63,7 +63,7 @@ static int pkt_opcode(lua_State *L)
 
 static int pkt_rcode(lua_State *L)
 {
-	knot_pkt_t *pkt = luaL_checkudata(L, 1, META_PKT);
+	knot_pkt_t *pkt = lua_touserdata(L, 1);
 	if (lua_gettop(L) > 1 && lua_isnumber(L, 2)) {
 		knot_wire_set_rcode(pkt->wire, lua_tonumber(L, 2));
 	}
@@ -73,21 +73,21 @@ static int pkt_rcode(lua_State *L)
 
 static int pkt_qtype(lua_State *L)
 {
-	knot_pkt_t *pkt = luaL_checkudata(L, 1, META_PKT);
+	knot_pkt_t *pkt = lua_touserdata(L, 1);
 	lua_pushnumber(L, knot_pkt_qtype(pkt));
 	return 1;
 }
 
 static int pkt_qclass(lua_State *L)
 {
-	knot_pkt_t *pkt = luaL_checkudata(L, 1, META_PKT);
+	knot_pkt_t *pkt = lua_touserdata(L, 1);
 	lua_pushnumber(L, knot_pkt_qclass(pkt));
 	return 1;	
 }
 
 static int pkt_qname(lua_State *L)
 {
-	knot_pkt_t *pkt = luaL_checkudata(L, 1, META_PKT);
+	knot_pkt_t *pkt = lua_touserdata(L, 1);
 	const knot_dname_t *dname = knot_pkt_qname(pkt);
 	char dname_str[KNOT_DNAME_MAXLEN];
 	knot_dname_to_str(dname_str, dname, sizeof(dname_str));

daemon/ffimodule.c

@@ -81,7 +81,7 @@ static inline int l_ffi_call(lua_State *L, int argc)
 		if (lua_isthread(L, -1)) { /* Continuations */
 			status = l_ffi_defer(lua_tothread(L, -1));
 		} else if (lua_isnumber(L, -1)) { /* Return code */
-			status = lua_tonumber(L, 1);
+			status = lua_tonumber(L, -1);
 		}
 		lua_pop(L, 1);
 	}

modules/block/block.lua

@@ -91,8 +91,6 @@ block.layer = {
 		else
 			return state
 		end
-
-		
 	end
 }