From 32459b6871639adeeb45f5b7669e232b040d7d6b Mon Sep 17 00:00:00 2001
From: Nicolas Iooss <nicolas.iooss_git@polytechnique.org>
Date: Sat, 8 Mar 2014 16:10:59 +0100
Subject: [PATCH] Fix HTTP redirect when changing rights on polytechnique.net
 and Referer header is filtered

---
 modules/xnetgrp.php | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/modules/xnetgrp.php b/modules/xnetgrp.php
index 0a40bae..53ebb12 100644
--- a/modules/xnetgrp.php
+++ b/modules/xnetgrp.php
@@ -920,7 +920,11 @@ class XnetGrpModule extends PLModule
                 break;
             }
         }
-        http_redirect($_SERVER['HTTP_REFERER']);
+        if (!empty($_SERVER['HTTP_REFERER'])) {
+            http_redirect($_SERVER['HTTP_REFERER']);
+        } else {
+            pl_redirect('');
+        }
     }
 
     function handler_admin_annuaire($page)
-- 
2.1.4