From 6a4aa34b0c618a804bf108049e95caf6028c84bd Mon Sep 17 00:00:00 2001
From: Mikael Nordfeldth <mmn@hethane.se>
Date: Wed, 3 Feb 2016 00:34:49 +0100
Subject: [PATCH] Don't process further in redirection if HEAD gives 400 Bad
 request

---
 classes/File_redirection.php | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/classes/File_redirection.php b/classes/File_redirection.php
index 9b872f3556..e901c464d7 100644
--- a/classes/File_redirection.php
+++ b/classes/File_redirection.php
@@ -120,6 +120,8 @@ class File_redirection extends Managed_DataObject
                 // no content it'll be cheap. :)
                 $request = self::_commonHttp($short_url, $redirs);
                 $response = $request->send();
+            } elseif (400 == $response->getStatus()) {
+                throw new Exception('Got error 400 on HEAD request, will not go further.');
             }
         } catch (Exception $e) {
             // Invalid URL or failure to reach server
@@ -418,4 +420,4 @@ class File_redirection extends Managed_DataObject
 
         return $this->file;
     }
-}
\ No newline at end of file
+}