From 0cb284699815dfaf8e00ea33bf8d5e85b7e1b4cd Mon Sep 17 00:00:00 2001
From: Rajesh Taneja <rajesh@moodle.com>
Date: Tue, 15 Oct 2013 14:44:00 +0800
Subject: [PATCH] MDL-34612 Restore: Gracefully handle empty file contenthash
 while restoring

---
 backup/util/dbops/restore_dbops.class.php | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/backup/util/dbops/restore_dbops.class.php b/backup/util/dbops/restore_dbops.class.php
index 540613d1826..cd2c3a08ee8 100644
--- a/backup/util/dbops/restore_dbops.class.php
+++ b/backup/util/dbops/restore_dbops.class.php
@@ -908,6 +908,15 @@ abstract class restore_dbops {
             }
 
             if (empty($file->repositoryid)) {
+                // If contenthash is empty then gracefully skip adding file.
+                if (empty($file->contenthash)) {
+                    $result = new stdClass();
+                    $result->code = 'file_missing_in_backup';
+                    $result->message = sprintf('missing file (%s) contenthash in backup for component %s', $file->filename, $component);
+                    $result->level = backup::LOG_WARNING;
+                    $results[] = $result;
+                    continue;
+                }
                 // this is a regular file, it must be present in the backup pool
                 $backuppath = $basepath . backup_file_manager::get_backup_content_file_location($file->contenthash);