From: Lukáš Ježek <lukas.jezek@nic.cz>
Date: Fri, 9 Oct 2020 07:43:29 +0000 (+0200)
Subject: lua: kr_table_len checks type of parameter
X-Git-Tag: v5.2.0~17^2
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=9e6d3b32b540cb5e48bbd0a476e67fb7299b78d2;p=thirdparty%2Fknot-resolver.git

lua: kr_table_len checks type of parameter
---

diff --git a/daemon/lua/kluautil.lua b/daemon/lua/kluautil.lua
index bfeac4184..0d63c07fc 100644
--- a/daemon/lua/kluautil.lua
+++ b/daemon/lua/kluautil.lua
@@ -5,6 +5,10 @@ local kluautil = {}
 
 -- Get length of table
 function kluautil.kr_table_len(t)
+	if type(t) ~= 'table' then
+		return nil
+	end
+
 	local len = 0
 	for _ in pairs(t) do
 		len = len + 1