From bfa8ff63017caa505ed984a9aa33e8446cab10c8 Mon Sep 17 00:00:00 2001
From: Marina Glancy <marina@moodle.com>
Date: Thu, 23 May 2013 19:15:47 +1000
Subject: [PATCH] MDL-39177 make sure we don't remove existing directories when
 cleaning up unzip

---
 repository/draftfiles_ajax.php | 17 +++++++++++------
 1 file changed, 11 insertions(+), 6 deletions(-)

diff --git a/repository/draftfiles_ajax.php b/repository/draftfiles_ajax.php
index 9a8acfa0dab..e50544ab836 100644
--- a/repository/draftfiles_ajax.php
+++ b/repository/draftfiles_ajax.php
@@ -219,6 +219,8 @@ switch ($action) {
 
         // Find unused name for directory to extract the archive.
         $temppath = $fs->get_unused_dirname($user_context->id, 'user', 'draft', $draftid, $filepath. pathinfo($filename, PATHINFO_FILENAME). '/');
+        $donotremovedirs = array();
+        $doremovedirs = array($temppath);
         // Extract archive and move all files from $temppath to $filepath
         if ($file->extract_to_storage($zipper, $user_context->id, 'user', 'draft', $draftid, $temppath, $USER->id) !== false) {
             $extractedfiles = $fs->get_directory_files($user_context->id, 'user', 'draft', $draftid, $temppath, true);
@@ -233,8 +235,12 @@ switch ($action) {
                     // File or directory did not exist, just move it.
                     $file->rename($realpath, $file->get_filename());
                 } else if (!$file->is_directory()) {
-                    // File already existed, overwrite it (nothing to do with existing directories).
+                    // File already existed, overwrite it
                     repository::overwrite_existing_draftfile($draftid, $realpath, $file->get_filename(), $file->get_filepath(), $file->get_filename());
+                } else {
+                    // Directory already existed, remove temporary dir but make sure we don't remove the existing dir
+                    $doremovedirs[] = $file->get_filepath();
+                    $donotremovedirs[] = $realpath;
                 }
             }
             $return = new stdClass();
@@ -243,11 +249,10 @@ switch ($action) {
             $return = false;
         }
         // Remove remaining temporary directories.
-        foreach ($fs->get_directory_files($user_context->id, 'user', 'draft', $draftid, $temppath, true, true, 'filepath desc, filename desc') as $file) {
-            $file->delete();
-        }
-        if ($file = $fs->get_file($user_context->id, 'user', 'draft', $draftid, $temppath, '.')) {
-            $file->delete();
+        foreach (array_diff($doremovedirs, $donotremovedirs) as $filepath) {
+            if ($file = $fs->get_file($user_context->id, 'user', 'draft', $draftid, $filepath, '.')) {
+                $file->delete();
+            }
         }
         die(json_encode($return));
 
-- 
2.43.0