From: Jason A. Donenfeld <Jason@zx2c4.com>
Date: Sat, 14 Jul 2018 03:10:28 +0000 (+0200)
Subject: auth-filters: do not crash on nil username
X-Git-Tag: v1.2.1~6
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=c4d23d02ec5a26d09d389dcf7b8928ecd5798ccc;p=cgit

auth-filters: do not crash on nil username

Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
---

diff --git a/filters/gentoo-ldap-authentication.lua b/filters/gentoo-ldap-authentication.lua
index c1e382f..3b6564b 100644
--- a/filters/gentoo-ldap-authentication.lua
+++ b/filters/gentoo-ldap-authentication.lua
@@ -106,7 +106,7 @@ local lualdap = require("lualdap")
 
 function gentoo_ldap_user_groups(username, password)
 	-- Ensure the user is alphanumeric
-	if username:match("%W") then
+	if username == nil or username:match("%W") then
 		return nil
 	end