From 7c2da8170028b2616b99ddf4483c956c057de31b Mon Sep 17 00:00:00 2001
From: DeusMaximus <DeusMaximus@users.noreply.github.com>
Date: Tue, 17 Jul 2018 14:03:19 +1000
Subject: [PATCH] Fix REMOTE_USER Header with IIS and AD

Remove DOMAIN\ portion of DOMAIN\user when using Windows Authentication and IIS with REMOTE_USER.
---
 app/Http/Controllers/Auth/LoginController.php | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/app/Http/Controllers/Auth/LoginController.php b/app/Http/Controllers/Auth/LoginController.php
index 940317a2c6..ed37640cd4 100644
--- a/app/Http/Controllers/Auth/LoginController.php
+++ b/app/Http/Controllers/Auth/LoginController.php
@@ -69,6 +69,12 @@ class LoginController extends Controller
         $remote_user = $request->server('REMOTE_USER');
         if (Setting::getSettings()->login_remote_user_enabled == "1" && isset($remote_user) && !empty($remote_user)) {
             LOG::debug("Authenticatiing via REMOTE_USER.");
+
+            $pos = strpos($remote_user, '\\');
+            if ($pos > 0) {
+                $remote_user = substr($remote_user, $pos + 1);
+            };
+            
             try {
                 $user = User::where('username', '=', $remote_user)->whereNull('deleted_at')->first();
                 LOG::debug("Remote user auth lookup complete");