From: Petr Špaček <petr.spacek@nic.cz>
Date: Tue, 9 Apr 2019 11:20:02 +0000 (+0200)
Subject: doh: fix error handling around empty POST
X-Git-Tag: v4.0.0~10^2~1
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=fc3f6487ad42222cfd31febfaf2dc719dec6ee22;p=thirdparty%2Fknot-resolver.git

doh: fix error handling around empty POST
---

diff --git a/modules/http/http_doh.lua b/modules/http/http_doh.lua
index 8091250a0..71d183676 100644
--- a/modules/http/http_doh.lua
+++ b/modules/http/http_doh.lua
@@ -30,7 +30,7 @@ local function serve_doh(h, stream)
 		return 405, 'only HTTP POST and GET are supported'
 	end
 
-	if #input < 12 then
+	if not input or #input < 12 then
 		return 400, 'input too short'
 	elseif #input > 1024 then
 		return 413, 'input too long'