From f0efe96dd4e492dfdb2108f0b9ce35b41f1dc4a5 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Uherkovich=20P=C3=A9ter?= <uherkovich.peter@gmail.com>
Date: Sun, 8 Nov 2020 00:11:42 +0100
Subject: [PATCH] reverse proxy port problem

---
 index.php | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/index.php b/index.php
index 0614540..d71345f 100644
--- a/index.php
+++ b/index.php
@@ -28,6 +28,9 @@
 
 define('SAML_INTERNAL', 1);
 
+// If we are behind a reverse proxy which terminates ssl and converts port to another, this line prevents bad redirections
+if(isset($_SERVER['HTTP_X_FORWARDED_PORT'])) $_SERVER['SERVER_PORT'] = $_SERVER['HTTP_X_FORWARDED_PORT'];
+
 try {
     // In order to avoid session problems we first do the SAML issues and then
     // we log in and register the attributes of user, but we need to read the value of the $CFG->dataroot.