From: Marek Vavruša <mvavrusa@cloudflare.com>
Date: Tue, 3 Apr 2018 22:51:32 +0000 (-0700)
Subject: lua: added typecheck for string-to-dname conversion
X-Git-Tag: v2.4.0~53^2~4
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=b8f568bf90a1801393d82b674bd15b207c06c8eb;p=thirdparty%2Fknot-resolver.git

lua: added typecheck for string-to-dname conversion
---

diff --git a/daemon/lua/kres.lua b/daemon/lua/kres.lua
index 9d690cfef..6e9cf8da4 100644
--- a/daemon/lua/kres.lua
+++ b/daemon/lua/kres.lua
@@ -796,6 +796,7 @@ kres = {
 	request_t = function (udata) return ffi.cast('struct kr_request *', udata) end,
 	-- Global API functions
 	str2dname = function(name)
+		if type(name) ~= 'string' then return end
 		local dname = ffi.gc(C.knot_dname_from_str(nil, name, 0), C.free)
 		return dname2wire(dname)
 	end,