From 790d83cb72177cf3ff9495e16d81feb2c8268bf7 Mon Sep 17 00:00:00 2001
From: "Alexander A. Klimov" <alexander.klimov@icinga.com>
Date: Tue, 18 Oct 2016 13:44:01 +0200
Subject: [PATCH] ExternalBackendForm: make the variable a webserver assigns a
 username to configurable

refs #12164
---
 .../forms/Config/UserBackend/ExternalBackendForm.php | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/application/forms/Config/UserBackend/ExternalBackendForm.php b/application/forms/Config/UserBackend/ExternalBackendForm.php
index f4a463911..39c46d927 100644
--- a/application/forms/Config/UserBackend/ExternalBackendForm.php
+++ b/application/forms/Config/UserBackend/ExternalBackendForm.php
@@ -55,6 +55,18 @@ class ExternalBackendForm extends Form
                 'validators'    => array($callbackValidator)
             )
         );
+        $this->addElement(
+            'text',
+            'username_envvar',
+            array(
+                'label'         => $this->translate('Username Environment Variable'),
+                'description'   => $this->translate(
+                    'The environment variable the webserver assigns the authenticated user\'s name to.'
+                ),
+                'required'      => true,
+                'value'         => 'REMOTE_USER'
+            )
+        );
         $this->addElement(
             'hidden',
             'backend',