34d466b2f6
When creating link shares from external storage, the filesystem cannot find an owner in some scenarios (ex: system-wide mounts). In such cases, fall back to using the current user's trashbin which happens to also be the user who created the link share. Fixes an issue where this scenario made deletion impossible due to missing user information. Signed-off-by: Lukas Reschke <lukas@statuscode.ch>
981 lines
31 KiB
PHP
981 lines
31 KiB
PHP
<?php
|
|
/**
|
|
* @copyright Copyright (c) 2016, ownCloud, Inc.
|
|
*
|
|
* @author Bart Visscher <bartv@thisnet.nl>
|
|
* @author Bastien Ho <bastienho@urbancube.fr>
|
|
* @author Björn Schießle <bjoern@schiessle.org>
|
|
* @author Florin Peter <github@florin-peter.de>
|
|
* @author Georg Ehrke <georg@owncloud.com>
|
|
* @author Jörn Friedrich Dreyer <jfd@butonic.de>
|
|
* @author Lukas Reschke <lukas@statuscode.ch>
|
|
* @author Morris Jobke <hey@morrisjobke.de>
|
|
* @author Qingping Hou <dave2008713@gmail.com>
|
|
* @author Robin Appelman <robin@icewind.nl>
|
|
* @author Robin McCorkell <robin@mccorkell.me.uk>
|
|
* @author Roeland Jago Douma <roeland@famdouma.nl>
|
|
* @author Sjors van der Pluijm <sjors@desjors.nl>
|
|
* @author Stefan Weil <sw@weilnetz.de>
|
|
* @author Thomas Müller <thomas.mueller@tmit.eu>
|
|
* @author Victor Dubiniuk <dubiniuk@owncloud.com>
|
|
* @author Vincent Petry <pvince81@owncloud.com>
|
|
*
|
|
* @license AGPL-3.0
|
|
*
|
|
* This code is free software: you can redistribute it and/or modify
|
|
* it under the terms of the GNU Affero General Public License, version 3,
|
|
* as published by the Free Software Foundation.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU Affero General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Affero General Public License, version 3,
|
|
* along with this program. If not, see <http://www.gnu.org/licenses/>
|
|
*
|
|
*/
|
|
|
|
namespace OCA\Files_Trashbin;
|
|
|
|
use OC\Files\Filesystem;
|
|
use OC\Files\View;
|
|
use OCA\Files_Trashbin\AppInfo\Application;
|
|
use OCA\Files_Trashbin\Command\Expire;
|
|
use OCP\Files\NotFoundException;
|
|
use OCP\User;
|
|
|
|
class Trashbin {
|
|
|
|
// unit: percentage; 50% of available disk space/quota
|
|
const DEFAULTMAXSIZE = 50;
|
|
|
|
/**
|
|
* Whether versions have already be rescanned during this PHP request
|
|
*
|
|
* @var bool
|
|
*/
|
|
private static $scannedVersions = false;
|
|
|
|
/**
|
|
* Ensure we don't need to scan the file during the move to trash
|
|
* by triggering the scan in the pre-hook
|
|
*
|
|
* @param array $params
|
|
*/
|
|
public static function ensureFileScannedHook($params) {
|
|
try {
|
|
self::getUidAndFilename($params['path']);
|
|
} catch (NotFoundException $e) {
|
|
// nothing to scan for non existing files
|
|
}
|
|
}
|
|
|
|
/**
|
|
* get the UID of the owner of the file and the path to the file relative to
|
|
* owners files folder
|
|
*
|
|
* @param string $filename
|
|
* @return array
|
|
* @throws \OC\User\NoUserException
|
|
*/
|
|
public static function getUidAndFilename($filename) {
|
|
$uid = Filesystem::getOwner($filename);
|
|
$userManager = \OC::$server->getUserManager();
|
|
// if the user with the UID doesn't exists, e.g. because the UID points
|
|
// to a remote user with a federated cloud ID we use the current logged-in
|
|
// user. We need a valid local user to move the file to the right trash bin
|
|
if (!$userManager->userExists($uid)) {
|
|
$uid = User::getUser();
|
|
}
|
|
if (!$uid) {
|
|
// no owner, usually because of share link from ext storage
|
|
return [null, null];
|
|
}
|
|
Filesystem::initMountPoints($uid);
|
|
if ($uid != User::getUser()) {
|
|
$info = Filesystem::getFileInfo($filename);
|
|
$ownerView = new View('/' . $uid . '/files');
|
|
try {
|
|
$filename = $ownerView->getPath($info['fileid']);
|
|
} catch (NotFoundException $e) {
|
|
$filename = null;
|
|
}
|
|
}
|
|
return [$uid, $filename];
|
|
}
|
|
|
|
/**
|
|
* get original location of files for user
|
|
*
|
|
* @param string $user
|
|
* @return array (filename => array (timestamp => original location))
|
|
*/
|
|
public static function getLocations($user) {
|
|
$query = \OC_DB::prepare('SELECT `id`, `timestamp`, `location`'
|
|
. ' FROM `*PREFIX*files_trash` WHERE `user`=?');
|
|
$result = $query->execute(array($user));
|
|
$array = array();
|
|
while ($row = $result->fetchRow()) {
|
|
if (isset($array[$row['id']])) {
|
|
$array[$row['id']][$row['timestamp']] = $row['location'];
|
|
} else {
|
|
$array[$row['id']] = array($row['timestamp'] => $row['location']);
|
|
}
|
|
}
|
|
return $array;
|
|
}
|
|
|
|
/**
|
|
* get original location of file
|
|
*
|
|
* @param string $user
|
|
* @param string $filename
|
|
* @param string $timestamp
|
|
* @return string original location
|
|
*/
|
|
public static function getLocation($user, $filename, $timestamp) {
|
|
$query = \OC_DB::prepare('SELECT `location` FROM `*PREFIX*files_trash`'
|
|
. ' WHERE `user`=? AND `id`=? AND `timestamp`=?');
|
|
$result = $query->execute(array($user, $filename, $timestamp))->fetchAll();
|
|
if (isset($result[0]['location'])) {
|
|
return $result[0]['location'];
|
|
} else {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
private static function setUpTrash($user) {
|
|
$view = new View('/' . $user);
|
|
if (!$view->is_dir('files_trashbin')) {
|
|
$view->mkdir('files_trashbin');
|
|
}
|
|
if (!$view->is_dir('files_trashbin/files')) {
|
|
$view->mkdir('files_trashbin/files');
|
|
}
|
|
if (!$view->is_dir('files_trashbin/versions')) {
|
|
$view->mkdir('files_trashbin/versions');
|
|
}
|
|
if (!$view->is_dir('files_trashbin/keys')) {
|
|
$view->mkdir('files_trashbin/keys');
|
|
}
|
|
}
|
|
|
|
|
|
/**
|
|
* copy file to owners trash
|
|
*
|
|
* @param string $sourcePath
|
|
* @param string $owner
|
|
* @param string $targetPath
|
|
* @param $user
|
|
* @param integer $timestamp
|
|
*/
|
|
private static function copyFilesToUser($sourcePath, $owner, $targetPath, $user, $timestamp) {
|
|
self::setUpTrash($owner);
|
|
|
|
$targetFilename = basename($targetPath);
|
|
$targetLocation = dirname($targetPath);
|
|
|
|
$sourceFilename = basename($sourcePath);
|
|
|
|
$view = new View('/');
|
|
|
|
$target = $user . '/files_trashbin/files/' . $targetFilename . '.d' . $timestamp;
|
|
$source = $owner . '/files_trashbin/files/' . $sourceFilename . '.d' . $timestamp;
|
|
self::copy_recursive($source, $target, $view);
|
|
|
|
|
|
if ($view->file_exists($target)) {
|
|
$query = \OC_DB::prepare("INSERT INTO `*PREFIX*files_trash` (`id`,`timestamp`,`location`,`user`) VALUES (?,?,?,?)");
|
|
$result = $query->execute(array($targetFilename, $timestamp, $targetLocation, $user));
|
|
if (!$result) {
|
|
\OCP\Util::writeLog('files_trashbin', 'trash bin database couldn\'t be updated for the files owner', \OCP\Util::ERROR);
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
/**
|
|
* move file to the trash bin
|
|
*
|
|
* @param string $file_path path to the deleted file/directory relative to the files root directory
|
|
* @return bool
|
|
*/
|
|
public static function move2trash($file_path) {
|
|
// get the user for which the filesystem is setup
|
|
$root = Filesystem::getRoot();
|
|
list(, $user) = explode('/', $root);
|
|
list($owner, $ownerPath) = self::getUidAndFilename($file_path);
|
|
|
|
// if no owner found (ex: ext storage + share link), will use the current user's trashbin then
|
|
if (is_null($owner)) {
|
|
$owner = $user;
|
|
$ownerPath = $file_path;
|
|
}
|
|
|
|
$ownerView = new View('/' . $owner);
|
|
// file has been deleted in between
|
|
if (is_null($ownerPath) || $ownerPath === '' || !$ownerView->file_exists('/files/' . $ownerPath)) {
|
|
return true;
|
|
}
|
|
|
|
self::setUpTrash($user);
|
|
if ($owner !== $user) {
|
|
// also setup for owner
|
|
self::setUpTrash($owner);
|
|
}
|
|
|
|
$path_parts = pathinfo($ownerPath);
|
|
|
|
$filename = $path_parts['basename'];
|
|
$location = $path_parts['dirname'];
|
|
$timestamp = time();
|
|
|
|
// disable proxy to prevent recursive calls
|
|
$trashPath = '/files_trashbin/files/' . $filename . '.d' . $timestamp;
|
|
|
|
/** @var \OC\Files\Storage\Storage $trashStorage */
|
|
list($trashStorage, $trashInternalPath) = $ownerView->resolvePath($trashPath);
|
|
/** @var \OC\Files\Storage\Storage $sourceStorage */
|
|
list($sourceStorage, $sourceInternalPath) = $ownerView->resolvePath('/files/' . $ownerPath);
|
|
try {
|
|
$moveSuccessful = true;
|
|
if ($trashStorage->file_exists($trashInternalPath)) {
|
|
$trashStorage->unlink($trashInternalPath);
|
|
}
|
|
$trashStorage->moveFromStorage($sourceStorage, $sourceInternalPath, $trashInternalPath);
|
|
} catch (\OCA\Files_Trashbin\Exceptions\CopyRecursiveException $e) {
|
|
$moveSuccessful = false;
|
|
if ($trashStorage->file_exists($trashInternalPath)) {
|
|
$trashStorage->unlink($trashInternalPath);
|
|
}
|
|
\OCP\Util::writeLog('files_trashbin', 'Couldn\'t move ' . $file_path . ' to the trash bin', \OCP\Util::ERROR);
|
|
}
|
|
|
|
if ($sourceStorage->file_exists($sourceInternalPath)) { // failed to delete the original file, abort
|
|
$sourceStorage->unlink($sourceInternalPath);
|
|
return false;
|
|
}
|
|
|
|
$trashStorage->getUpdater()->renameFromStorage($sourceStorage, $sourceInternalPath, $trashInternalPath);
|
|
|
|
if ($moveSuccessful) {
|
|
$query = \OC_DB::prepare("INSERT INTO `*PREFIX*files_trash` (`id`,`timestamp`,`location`,`user`) VALUES (?,?,?,?)");
|
|
$result = $query->execute(array($filename, $timestamp, $location, $owner));
|
|
if (!$result) {
|
|
\OCP\Util::writeLog('files_trashbin', 'trash bin database couldn\'t be updated', \OCP\Util::ERROR);
|
|
}
|
|
\OCP\Util::emitHook('\OCA\Files_Trashbin\Trashbin', 'post_moveToTrash', array('filePath' => Filesystem::normalizePath($file_path),
|
|
'trashPath' => Filesystem::normalizePath($filename . '.d' . $timestamp)));
|
|
|
|
self::retainVersions($filename, $owner, $ownerPath, $timestamp);
|
|
|
|
// if owner !== user we need to also add a copy to the owners trash
|
|
if ($user !== $owner) {
|
|
self::copyFilesToUser($ownerPath, $owner, $file_path, $user, $timestamp);
|
|
}
|
|
}
|
|
|
|
self::scheduleExpire($user);
|
|
|
|
// if owner !== user we also need to update the owners trash size
|
|
if ($owner !== $user) {
|
|
self::scheduleExpire($owner);
|
|
}
|
|
|
|
return $moveSuccessful;
|
|
}
|
|
|
|
/**
|
|
* Move file versions to trash so that they can be restored later
|
|
*
|
|
* @param string $filename of deleted file
|
|
* @param string $owner owner user id
|
|
* @param string $ownerPath path relative to the owner's home storage
|
|
* @param integer $timestamp when the file was deleted
|
|
*/
|
|
private static function retainVersions($filename, $owner, $ownerPath, $timestamp) {
|
|
if (\OCP\App::isEnabled('files_versions') && !empty($ownerPath)) {
|
|
|
|
$user = User::getUser();
|
|
$rootView = new View('/');
|
|
|
|
if ($rootView->is_dir($owner . '/files_versions/' . $ownerPath)) {
|
|
if ($owner !== $user) {
|
|
self::copy_recursive($owner . '/files_versions/' . $ownerPath, $owner . '/files_trashbin/versions/' . basename($ownerPath) . '.d' . $timestamp, $rootView);
|
|
}
|
|
self::move($rootView, $owner . '/files_versions/' . $ownerPath, $user . '/files_trashbin/versions/' . $filename . '.d' . $timestamp);
|
|
} else if ($versions = \OCA\Files_Versions\Storage::getVersions($owner, $ownerPath)) {
|
|
|
|
foreach ($versions as $v) {
|
|
if ($owner !== $user) {
|
|
self::copy($rootView, $owner . '/files_versions' . $v['path'] . '.v' . $v['version'], $owner . '/files_trashbin/versions/' . $v['name'] . '.v' . $v['version'] . '.d' . $timestamp);
|
|
}
|
|
self::move($rootView, $owner . '/files_versions' . $v['path'] . '.v' . $v['version'], $user . '/files_trashbin/versions/' . $filename . '.v' . $v['version'] . '.d' . $timestamp);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Move a file or folder on storage level
|
|
*
|
|
* @param View $view
|
|
* @param string $source
|
|
* @param string $target
|
|
* @return bool
|
|
*/
|
|
private static function move(View $view, $source, $target) {
|
|
/** @var \OC\Files\Storage\Storage $sourceStorage */
|
|
list($sourceStorage, $sourceInternalPath) = $view->resolvePath($source);
|
|
/** @var \OC\Files\Storage\Storage $targetStorage */
|
|
list($targetStorage, $targetInternalPath) = $view->resolvePath($target);
|
|
/** @var \OC\Files\Storage\Storage $ownerTrashStorage */
|
|
|
|
$result = $targetStorage->moveFromStorage($sourceStorage, $sourceInternalPath, $targetInternalPath);
|
|
if ($result) {
|
|
$targetStorage->getUpdater()->renameFromStorage($sourceStorage, $sourceInternalPath, $targetInternalPath);
|
|
}
|
|
return $result;
|
|
}
|
|
|
|
/**
|
|
* Copy a file or folder on storage level
|
|
*
|
|
* @param View $view
|
|
* @param string $source
|
|
* @param string $target
|
|
* @return bool
|
|
*/
|
|
private static function copy(View $view, $source, $target) {
|
|
/** @var \OC\Files\Storage\Storage $sourceStorage */
|
|
list($sourceStorage, $sourceInternalPath) = $view->resolvePath($source);
|
|
/** @var \OC\Files\Storage\Storage $targetStorage */
|
|
list($targetStorage, $targetInternalPath) = $view->resolvePath($target);
|
|
/** @var \OC\Files\Storage\Storage $ownerTrashStorage */
|
|
|
|
$result = $targetStorage->copyFromStorage($sourceStorage, $sourceInternalPath, $targetInternalPath);
|
|
if ($result) {
|
|
$targetStorage->getUpdater()->update($targetInternalPath);
|
|
}
|
|
return $result;
|
|
}
|
|
|
|
/**
|
|
* Restore a file or folder from trash bin
|
|
*
|
|
* @param string $file path to the deleted file/folder relative to "files_trashbin/files/",
|
|
* including the timestamp suffix ".d12345678"
|
|
* @param string $filename name of the file/folder
|
|
* @param int $timestamp time when the file/folder was deleted
|
|
*
|
|
* @return bool true on success, false otherwise
|
|
*/
|
|
public static function restore($file, $filename, $timestamp) {
|
|
$user = User::getUser();
|
|
$view = new View('/' . $user);
|
|
|
|
$location = '';
|
|
if ($timestamp) {
|
|
$location = self::getLocation($user, $filename, $timestamp);
|
|
if ($location === false) {
|
|
\OCP\Util::writeLog('files_trashbin', 'trash bin database inconsistent!', \OCP\Util::ERROR);
|
|
} else {
|
|
// if location no longer exists, restore file in the root directory
|
|
if ($location !== '/' &&
|
|
(!$view->is_dir('files/' . $location) ||
|
|
!$view->isCreatable('files/' . $location))
|
|
) {
|
|
$location = '';
|
|
}
|
|
}
|
|
}
|
|
|
|
// we need a extension in case a file/dir with the same name already exists
|
|
$uniqueFilename = self::getUniqueFilename($location, $filename, $view);
|
|
|
|
$source = Filesystem::normalizePath('files_trashbin/files/' . $file);
|
|
$target = Filesystem::normalizePath('files/' . $location . '/' . $uniqueFilename);
|
|
if (!$view->file_exists($source)) {
|
|
return false;
|
|
}
|
|
$mtime = $view->filemtime($source);
|
|
|
|
// restore file
|
|
$restoreResult = $view->rename($source, $target);
|
|
|
|
// handle the restore result
|
|
if ($restoreResult) {
|
|
$fakeRoot = $view->getRoot();
|
|
$view->chroot('/' . $user . '/files');
|
|
$view->touch('/' . $location . '/' . $uniqueFilename, $mtime);
|
|
$view->chroot($fakeRoot);
|
|
\OCP\Util::emitHook('\OCA\Files_Trashbin\Trashbin', 'post_restore', array('filePath' => Filesystem::normalizePath('/' . $location . '/' . $uniqueFilename),
|
|
'trashPath' => Filesystem::normalizePath($file)));
|
|
|
|
self::restoreVersions($view, $file, $filename, $uniqueFilename, $location, $timestamp);
|
|
|
|
if ($timestamp) {
|
|
$query = \OC_DB::prepare('DELETE FROM `*PREFIX*files_trash` WHERE `user`=? AND `id`=? AND `timestamp`=?');
|
|
$query->execute(array($user, $filename, $timestamp));
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* restore versions from trash bin
|
|
*
|
|
* @param View $view file view
|
|
* @param string $file complete path to file
|
|
* @param string $filename name of file once it was deleted
|
|
* @param string $uniqueFilename new file name to restore the file without overwriting existing files
|
|
* @param string $location location if file
|
|
* @param int $timestamp deletion time
|
|
* @return false|null
|
|
*/
|
|
private static function restoreVersions(View $view, $file, $filename, $uniqueFilename, $location, $timestamp) {
|
|
|
|
if (\OCP\App::isEnabled('files_versions')) {
|
|
|
|
$user = User::getUser();
|
|
$rootView = new View('/');
|
|
|
|
$target = Filesystem::normalizePath('/' . $location . '/' . $uniqueFilename);
|
|
|
|
list($owner, $ownerPath) = self::getUidAndFilename($target);
|
|
|
|
// file has been deleted in between
|
|
if (empty($ownerPath)) {
|
|
return false;
|
|
}
|
|
|
|
if ($timestamp) {
|
|
$versionedFile = $filename;
|
|
} else {
|
|
$versionedFile = $file;
|
|
}
|
|
|
|
if ($view->is_dir('/files_trashbin/versions/' . $file)) {
|
|
$rootView->rename(Filesystem::normalizePath($user . '/files_trashbin/versions/' . $file), Filesystem::normalizePath($owner . '/files_versions/' . $ownerPath));
|
|
} else if ($versions = self::getVersionsFromTrash($versionedFile, $timestamp, $user)) {
|
|
foreach ($versions as $v) {
|
|
if ($timestamp) {
|
|
$rootView->rename($user . '/files_trashbin/versions/' . $versionedFile . '.v' . $v . '.d' . $timestamp, $owner . '/files_versions/' . $ownerPath . '.v' . $v);
|
|
} else {
|
|
$rootView->rename($user . '/files_trashbin/versions/' . $versionedFile . '.v' . $v, $owner . '/files_versions/' . $ownerPath . '.v' . $v);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* delete all files from the trash
|
|
*/
|
|
public static function deleteAll() {
|
|
$user = User::getUser();
|
|
$view = new View('/' . $user);
|
|
$fileInfos = $view->getDirectoryContent('files_trashbin/files');
|
|
|
|
// Array to store the relative path in (after the file is deleted, the view won't be able to relativise the path anymore)
|
|
$filePaths = array();
|
|
foreach($fileInfos as $fileInfo){
|
|
$filePaths[] = $view->getRelativePath($fileInfo->getPath());
|
|
}
|
|
unset($fileInfos); // save memory
|
|
|
|
// Bulk PreDelete-Hook
|
|
\OC_Hook::emit('\OCP\Trashbin', 'preDeleteAll', array('paths' => $filePaths));
|
|
|
|
// Single-File Hooks
|
|
foreach($filePaths as $path){
|
|
self::emitTrashbinPreDelete($path);
|
|
}
|
|
|
|
// actual file deletion
|
|
$view->deleteAll('files_trashbin');
|
|
$query = \OC_DB::prepare('DELETE FROM `*PREFIX*files_trash` WHERE `user`=?');
|
|
$query->execute(array($user));
|
|
|
|
// Bulk PostDelete-Hook
|
|
\OC_Hook::emit('\OCP\Trashbin', 'deleteAll', array('paths' => $filePaths));
|
|
|
|
// Single-File Hooks
|
|
foreach($filePaths as $path){
|
|
self::emitTrashbinPostDelete($path);
|
|
}
|
|
|
|
$view->mkdir('files_trashbin');
|
|
$view->mkdir('files_trashbin/files');
|
|
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* wrapper function to emit the 'preDelete' hook of \OCP\Trashbin before a file is deleted
|
|
* @param string $path
|
|
*/
|
|
protected static function emitTrashbinPreDelete($path){
|
|
\OC_Hook::emit('\OCP\Trashbin', 'preDelete', array('path' => $path));
|
|
}
|
|
|
|
/**
|
|
* wrapper function to emit the 'delete' hook of \OCP\Trashbin after a file has been deleted
|
|
* @param string $path
|
|
*/
|
|
protected static function emitTrashbinPostDelete($path){
|
|
\OC_Hook::emit('\OCP\Trashbin', 'delete', array('path' => $path));
|
|
}
|
|
|
|
/**
|
|
* delete file from trash bin permanently
|
|
*
|
|
* @param string $filename path to the file
|
|
* @param string $user
|
|
* @param int $timestamp of deletion time
|
|
*
|
|
* @return int size of deleted files
|
|
*/
|
|
public static function delete($filename, $user, $timestamp = null) {
|
|
$view = new View('/' . $user);
|
|
$size = 0;
|
|
|
|
if ($timestamp) {
|
|
$query = \OC_DB::prepare('DELETE FROM `*PREFIX*files_trash` WHERE `user`=? AND `id`=? AND `timestamp`=?');
|
|
$query->execute(array($user, $filename, $timestamp));
|
|
$file = $filename . '.d' . $timestamp;
|
|
} else {
|
|
$file = $filename;
|
|
}
|
|
|
|
$size += self::deleteVersions($view, $file, $filename, $timestamp, $user);
|
|
|
|
if ($view->is_dir('/files_trashbin/files/' . $file)) {
|
|
$size += self::calculateSize(new View('/' . $user . '/files_trashbin/files/' . $file));
|
|
} else {
|
|
$size += $view->filesize('/files_trashbin/files/' . $file);
|
|
}
|
|
self::emitTrashbinPreDelete('/files_trashbin/files/' . $file);
|
|
$view->unlink('/files_trashbin/files/' . $file);
|
|
self::emitTrashbinPostDelete('/files_trashbin/files/' . $file);
|
|
|
|
return $size;
|
|
}
|
|
|
|
/**
|
|
* @param View $view
|
|
* @param string $file
|
|
* @param string $filename
|
|
* @param integer|null $timestamp
|
|
* @param string $user
|
|
* @return int
|
|
*/
|
|
private static function deleteVersions(View $view, $file, $filename, $timestamp, $user) {
|
|
$size = 0;
|
|
if (\OCP\App::isEnabled('files_versions')) {
|
|
if ($view->is_dir('files_trashbin/versions/' . $file)) {
|
|
$size += self::calculateSize(new View('/' . $user . '/files_trashbin/versions/' . $file));
|
|
$view->unlink('files_trashbin/versions/' . $file);
|
|
} else if ($versions = self::getVersionsFromTrash($filename, $timestamp, $user)) {
|
|
foreach ($versions as $v) {
|
|
if ($timestamp) {
|
|
$size += $view->filesize('/files_trashbin/versions/' . $filename . '.v' . $v . '.d' . $timestamp);
|
|
$view->unlink('/files_trashbin/versions/' . $filename . '.v' . $v . '.d' . $timestamp);
|
|
} else {
|
|
$size += $view->filesize('/files_trashbin/versions/' . $filename . '.v' . $v);
|
|
$view->unlink('/files_trashbin/versions/' . $filename . '.v' . $v);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
return $size;
|
|
}
|
|
|
|
/**
|
|
* check to see whether a file exists in trashbin
|
|
*
|
|
* @param string $filename path to the file
|
|
* @param int $timestamp of deletion time
|
|
* @return bool true if file exists, otherwise false
|
|
*/
|
|
public static function file_exists($filename, $timestamp = null) {
|
|
$user = User::getUser();
|
|
$view = new View('/' . $user);
|
|
|
|
if ($timestamp) {
|
|
$filename = $filename . '.d' . $timestamp;
|
|
} else {
|
|
$filename = $filename;
|
|
}
|
|
|
|
$target = Filesystem::normalizePath('files_trashbin/files/' . $filename);
|
|
return $view->file_exists($target);
|
|
}
|
|
|
|
/**
|
|
* deletes used space for trash bin in db if user was deleted
|
|
*
|
|
* @param string $uid id of deleted user
|
|
* @return bool result of db delete operation
|
|
*/
|
|
public static function deleteUser($uid) {
|
|
$query = \OC_DB::prepare('DELETE FROM `*PREFIX*files_trash` WHERE `user`=?');
|
|
return $query->execute(array($uid));
|
|
}
|
|
|
|
/**
|
|
* calculate remaining free space for trash bin
|
|
*
|
|
* @param integer $trashbinSize current size of the trash bin
|
|
* @param string $user
|
|
* @return int available free space for trash bin
|
|
*/
|
|
private static function calculateFreeSpace($trashbinSize, $user) {
|
|
$softQuota = true;
|
|
$userObject = \OC::$server->getUserManager()->get($user);
|
|
if(is_null($userObject)) {
|
|
return 0;
|
|
}
|
|
$quota = $userObject->getQuota();
|
|
if ($quota === null || $quota === 'none') {
|
|
$quota = Filesystem::free_space('/');
|
|
$softQuota = false;
|
|
// inf or unknown free space
|
|
if ($quota < 0) {
|
|
$quota = PHP_INT_MAX;
|
|
}
|
|
} else {
|
|
$quota = \OCP\Util::computerFileSize($quota);
|
|
}
|
|
|
|
// calculate available space for trash bin
|
|
// subtract size of files and current trash bin size from quota
|
|
if ($softQuota) {
|
|
$userFolder = \OC::$server->getUserFolder($user);
|
|
if(is_null($userFolder)) {
|
|
return 0;
|
|
}
|
|
$free = $quota - $userFolder->getSize(); // remaining free space for user
|
|
if ($free > 0) {
|
|
$availableSpace = ($free * self::DEFAULTMAXSIZE / 100) - $trashbinSize; // how much space can be used for versions
|
|
} else {
|
|
$availableSpace = $free - $trashbinSize;
|
|
}
|
|
} else {
|
|
$availableSpace = $quota;
|
|
}
|
|
|
|
return $availableSpace;
|
|
}
|
|
|
|
/**
|
|
* resize trash bin if necessary after a new file was added to ownCloud
|
|
*
|
|
* @param string $user user id
|
|
*/
|
|
public static function resizeTrash($user) {
|
|
|
|
$size = self::getTrashbinSize($user);
|
|
|
|
$freeSpace = self::calculateFreeSpace($size, $user);
|
|
|
|
if ($freeSpace < 0) {
|
|
self::scheduleExpire($user);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* clean up the trash bin
|
|
*
|
|
* @param string $user
|
|
*/
|
|
public static function expire($user) {
|
|
$trashBinSize = self::getTrashbinSize($user);
|
|
$availableSpace = self::calculateFreeSpace($trashBinSize, $user);
|
|
|
|
$dirContent = Helper::getTrashFiles('/', $user, 'mtime');
|
|
|
|
// delete all files older then $retention_obligation
|
|
list($delSize, $count) = self::deleteExpiredFiles($dirContent, $user);
|
|
|
|
$availableSpace += $delSize;
|
|
|
|
// delete files from trash until we meet the trash bin size limit again
|
|
self::deleteFiles(array_slice($dirContent, $count), $user, $availableSpace);
|
|
}
|
|
|
|
/**
|
|
* @param string $user
|
|
*/
|
|
private static function scheduleExpire($user) {
|
|
// let the admin disable auto expire
|
|
$application = new Application();
|
|
$expiration = $application->getContainer()->query('Expiration');
|
|
if ($expiration->isEnabled()) {
|
|
\OC::$server->getCommandBus()->push(new Expire($user));
|
|
}
|
|
}
|
|
|
|
/**
|
|
* if the size limit for the trash bin is reached, we delete the oldest
|
|
* files in the trash bin until we meet the limit again
|
|
*
|
|
* @param array $files
|
|
* @param string $user
|
|
* @param int $availableSpace available disc space
|
|
* @return int size of deleted files
|
|
*/
|
|
protected static function deleteFiles($files, $user, $availableSpace) {
|
|
$application = new Application();
|
|
$expiration = $application->getContainer()->query('Expiration');
|
|
$size = 0;
|
|
|
|
if ($availableSpace < 0) {
|
|
foreach ($files as $file) {
|
|
if ($availableSpace < 0 && $expiration->isExpired($file['mtime'], true)) {
|
|
$tmp = self::delete($file['name'], $user, $file['mtime']);
|
|
\OCP\Util::writeLog('files_trashbin', 'remove "' . $file['name'] . '" (' . $tmp . 'B) to meet the limit of trash bin size (50% of available quota)', \OCP\Util::INFO);
|
|
$availableSpace += $tmp;
|
|
$size += $tmp;
|
|
} else {
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
return $size;
|
|
}
|
|
|
|
/**
|
|
* delete files older then max storage time
|
|
*
|
|
* @param array $files list of files sorted by mtime
|
|
* @param string $user
|
|
* @return integer[] size of deleted files and number of deleted files
|
|
*/
|
|
public static function deleteExpiredFiles($files, $user) {
|
|
$application = new Application();
|
|
$expiration = $application->getContainer()->query('Expiration');
|
|
$size = 0;
|
|
$count = 0;
|
|
foreach ($files as $file) {
|
|
$timestamp = $file['mtime'];
|
|
$filename = $file['name'];
|
|
if ($expiration->isExpired($timestamp)) {
|
|
$count++;
|
|
$size += self::delete($filename, $user, $timestamp);
|
|
\OC::$server->getLogger()->info(
|
|
'Remove "' . $filename . '" from trashbin because it exceeds max retention obligation term.',
|
|
['app' => 'files_trashbin']
|
|
);
|
|
} else {
|
|
break;
|
|
}
|
|
}
|
|
|
|
return array($size, $count);
|
|
}
|
|
|
|
/**
|
|
* recursive copy to copy a whole directory
|
|
*
|
|
* @param string $source source path, relative to the users files directory
|
|
* @param string $destination destination path relative to the users root directoy
|
|
* @param View $view file view for the users root directory
|
|
* @return int
|
|
* @throws Exceptions\CopyRecursiveException
|
|
*/
|
|
private static function copy_recursive($source, $destination, View $view) {
|
|
$size = 0;
|
|
if ($view->is_dir($source)) {
|
|
$view->mkdir($destination);
|
|
$view->touch($destination, $view->filemtime($source));
|
|
foreach ($view->getDirectoryContent($source) as $i) {
|
|
$pathDir = $source . '/' . $i['name'];
|
|
if ($view->is_dir($pathDir)) {
|
|
$size += self::copy_recursive($pathDir, $destination . '/' . $i['name'], $view);
|
|
} else {
|
|
$size += $view->filesize($pathDir);
|
|
$result = $view->copy($pathDir, $destination . '/' . $i['name']);
|
|
if (!$result) {
|
|
throw new \OCA\Files_Trashbin\Exceptions\CopyRecursiveException();
|
|
}
|
|
$view->touch($destination . '/' . $i['name'], $view->filemtime($pathDir));
|
|
}
|
|
}
|
|
} else {
|
|
$size += $view->filesize($source);
|
|
$result = $view->copy($source, $destination);
|
|
if (!$result) {
|
|
throw new \OCA\Files_Trashbin\Exceptions\CopyRecursiveException();
|
|
}
|
|
$view->touch($destination, $view->filemtime($source));
|
|
}
|
|
return $size;
|
|
}
|
|
|
|
/**
|
|
* find all versions which belong to the file we want to restore
|
|
*
|
|
* @param string $filename name of the file which should be restored
|
|
* @param int $timestamp timestamp when the file was deleted
|
|
* @return array
|
|
*/
|
|
private static function getVersionsFromTrash($filename, $timestamp, $user) {
|
|
$view = new View('/' . $user . '/files_trashbin/versions');
|
|
$versions = array();
|
|
|
|
//force rescan of versions, local storage may not have updated the cache
|
|
if (!self::$scannedVersions) {
|
|
/** @var \OC\Files\Storage\Storage $storage */
|
|
list($storage,) = $view->resolvePath('/');
|
|
$storage->getScanner()->scan('files_trashbin/versions');
|
|
self::$scannedVersions = true;
|
|
}
|
|
|
|
if ($timestamp) {
|
|
// fetch for old versions
|
|
$matches = $view->searchRaw($filename . '.v%.d' . $timestamp);
|
|
$offset = -strlen($timestamp) - 2;
|
|
} else {
|
|
$matches = $view->searchRaw($filename . '.v%');
|
|
}
|
|
|
|
if (is_array($matches)) {
|
|
foreach ($matches as $ma) {
|
|
if ($timestamp) {
|
|
$parts = explode('.v', substr($ma['path'], 0, $offset));
|
|
$versions[] = (end($parts));
|
|
} else {
|
|
$parts = explode('.v', $ma);
|
|
$versions[] = (end($parts));
|
|
}
|
|
}
|
|
}
|
|
return $versions;
|
|
}
|
|
|
|
/**
|
|
* find unique extension for restored file if a file with the same name already exists
|
|
*
|
|
* @param string $location where the file should be restored
|
|
* @param string $filename name of the file
|
|
* @param View $view filesystem view relative to users root directory
|
|
* @return string with unique extension
|
|
*/
|
|
private static function getUniqueFilename($location, $filename, View $view) {
|
|
$ext = pathinfo($filename, PATHINFO_EXTENSION);
|
|
$name = pathinfo($filename, PATHINFO_FILENAME);
|
|
$l = \OC::$server->getL10N('files_trashbin');
|
|
|
|
$location = '/' . trim($location, '/');
|
|
|
|
// if extension is not empty we set a dot in front of it
|
|
if ($ext !== '') {
|
|
$ext = '.' . $ext;
|
|
}
|
|
|
|
if ($view->file_exists('files' . $location . '/' . $filename)) {
|
|
$i = 2;
|
|
$uniqueName = $name . " (" . $l->t("restored") . ")" . $ext;
|
|
while ($view->file_exists('files' . $location . '/' . $uniqueName)) {
|
|
$uniqueName = $name . " (" . $l->t("restored") . " " . $i . ")" . $ext;
|
|
$i++;
|
|
}
|
|
|
|
return $uniqueName;
|
|
}
|
|
|
|
return $filename;
|
|
}
|
|
|
|
/**
|
|
* get the size from a given root folder
|
|
*
|
|
* @param View $view file view on the root folder
|
|
* @return integer size of the folder
|
|
*/
|
|
private static function calculateSize($view) {
|
|
$root = \OC::$server->getConfig()->getSystemValue('datadirectory') . $view->getAbsolutePath('');
|
|
if (!file_exists($root)) {
|
|
return 0;
|
|
}
|
|
$iterator = new \RecursiveIteratorIterator(new \RecursiveDirectoryIterator($root), \RecursiveIteratorIterator::CHILD_FIRST);
|
|
$size = 0;
|
|
|
|
/**
|
|
* RecursiveDirectoryIterator on an NFS path isn't iterable with foreach
|
|
* This bug is fixed in PHP 5.5.9 or before
|
|
* See #8376
|
|
*/
|
|
$iterator->rewind();
|
|
while ($iterator->valid()) {
|
|
$path = $iterator->current();
|
|
$relpath = substr($path, strlen($root) - 1);
|
|
if (!$view->is_dir($relpath)) {
|
|
$size += $view->filesize($relpath);
|
|
}
|
|
$iterator->next();
|
|
}
|
|
return $size;
|
|
}
|
|
|
|
/**
|
|
* get current size of trash bin from a given user
|
|
*
|
|
* @param string $user user who owns the trash bin
|
|
* @return integer trash bin size
|
|
*/
|
|
private static function getTrashbinSize($user) {
|
|
$view = new View('/' . $user);
|
|
$fileInfo = $view->getFileInfo('/files_trashbin');
|
|
return isset($fileInfo['size']) ? $fileInfo['size'] : 0;
|
|
}
|
|
|
|
/**
|
|
* register hooks
|
|
*/
|
|
public static function registerHooks() {
|
|
// create storage wrapper on setup
|
|
\OCP\Util::connectHook('OC_Filesystem', 'preSetup', 'OCA\Files_Trashbin\Storage', 'setupStorage');
|
|
//Listen to delete user signal
|
|
\OCP\Util::connectHook('OC_User', 'pre_deleteUser', 'OCA\Files_Trashbin\Hooks', 'deleteUser_hook');
|
|
//Listen to post write hook
|
|
\OCP\Util::connectHook('OC_Filesystem', 'post_write', 'OCA\Files_Trashbin\Hooks', 'post_write_hook');
|
|
// pre and post-rename, disable trash logic for the copy+unlink case
|
|
\OCP\Util::connectHook('OC_Filesystem', 'delete', 'OCA\Files_Trashbin\Trashbin', 'ensureFileScannedHook');
|
|
\OCP\Util::connectHook('OC_Filesystem', 'rename', 'OCA\Files_Trashbin\Storage', 'preRenameHook');
|
|
\OCP\Util::connectHook('OC_Filesystem', 'post_rename', 'OCA\Files_Trashbin\Storage', 'postRenameHook');
|
|
}
|
|
|
|
/**
|
|
* check if trash bin is empty for a given user
|
|
*
|
|
* @param string $user
|
|
* @return bool
|
|
*/
|
|
public static function isEmpty($user) {
|
|
|
|
$view = new View('/' . $user . '/files_trashbin');
|
|
if ($view->is_dir('/files') && $dh = $view->opendir('/files')) {
|
|
while ($file = readdir($dh)) {
|
|
if (!Filesystem::isIgnoredDir($file)) {
|
|
return false;
|
|
}
|
|
}
|
|
}
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* @param $path
|
|
* @return string
|
|
*/
|
|
public static function preview_icon($path) {
|
|
return \OCP\Util::linkToRoute('core_ajax_trashbin_preview', array('x' => 32, 'y' => 32, 'file' => $path));
|
|
}
|
|
}
|