From 890e1641792b87c401adf12e1cfdf3a6215fa23d Mon Sep 17 00:00:00 2001
From: Andrew Davidson <andrew.davidson@synergy-learning.com>
Date: Wed, 8 Apr 2015 10:05:08 +0100
Subject: [PATCH] MDL-49787 email: Updated email attachement path check to use
 realpath() in order to allow for symlinked temp directories

---
 lib/moodlelib.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/moodlelib.php b/lib/moodlelib.php
index b80bb302ce9..fcf605c272c 100644
--- a/lib/moodlelib.php
+++ b/lib/moodlelib.php
@@ -5956,7 +5956,7 @@ function email_to_user($user, $from, $subject, $messagetext, $messagehtml = '',
 
             // If the attachment is a full path to a file in the tempdir, use it as is,
             // otherwise assume it is a relative path from the dataroot (for backwards compatibility reasons).
-            if (strpos($attachpath, $temppath) !== 0) {
+            if (strpos($attachpath, realpath($temppath)) !== 0) {
                 $attachmentpath = $CFG->dataroot . '/' . $attachmentpath;
             }