From e38b13875db01e20f41669d1adc6da829946377a Mon Sep 17 00:00:00 2001
From: Rob Wigginton <robw@escentual.com>
Date: Tue, 28 Feb 2017 11:35:25 +0000
Subject: [PATCH] fix paypal postback response parsing when the response
 includes unexpected HTTP headers

---
 app/code/core/Mage/Paypal/Model/Ipn.php | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/app/code/core/Mage/Paypal/Model/Ipn.php b/app/code/core/Mage/Paypal/Model/Ipn.php
index 1def7cf0a68..58e8ef1dd13 100644
--- a/app/code/core/Mage/Paypal/Model/Ipn.php
+++ b/app/code/core/Mage/Paypal/Model/Ipn.php
@@ -166,8 +166,8 @@ protected function _postBack(Zend_Http_Client_Adapter_Interface $httpAdapter)
             throw new Mage_Paypal_UnavailableException($reason);
         }
 
-        $response = preg_split('/^\r?$/m', $postbackResult, 2);
-        $response = trim($response[1]);
+        $response = preg_split('/^\r?$/m', $postbackResult);
+        $response = trim(end($response));
         if ($response != 'VERIFIED') {
             $this->_debugData['postback'] = $postbackQuery;
             $this->_debugData['postback_result'] = $postbackResult;