1004 lines
32 KiB
PHP
1004 lines
32 KiB
PHP
<?php
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/**
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* @copyright Copyright (c) 2016, ownCloud, Inc.
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*
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* @author Bart Visscher <bartv@thisnet.nl>
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* @author Bastien Ho <bastienho@urbancube.fr>
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* @author Björn Schießle <bjoern@schiessle.org>
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* @author Florin Peter <github@florin-peter.de>
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* @author Georg Ehrke <georg@owncloud.com>
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* @author Jörn Friedrich Dreyer <jfd@butonic.de>
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* @author Lukas Reschke <lukas@statuscode.ch>
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* @author Morris Jobke <hey@morrisjobke.de>
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* @author Qingping Hou <dave2008713@gmail.com>
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* @author Robin Appelman <robin@icewind.nl>
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* @author Robin McCorkell <robin@mccorkell.me.uk>
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* @author Roeland Jago Douma <roeland@famdouma.nl>
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* @author Sjors van der Pluijm <sjors@desjors.nl>
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* @author Stefan Weil <sw@weilnetz.de>
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* @author Thomas Müller <thomas.mueller@tmit.eu>
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* @author Victor Dubiniuk <dubiniuk@owncloud.com>
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* @author Vincent Petry <pvince81@owncloud.com>
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*
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* @license AGPL-3.0
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*
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* This code is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License, version 3,
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* as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License, version 3,
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* along with this program. If not, see <http://www.gnu.org/licenses/>
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*
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*/
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namespace OCA\Files_Trashbin;
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use OC\Files\Filesystem;
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use OC\Files\View;
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use OCA\Files_Trashbin\AppInfo\Application;
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use OCA\Files_Trashbin\Command\Expire;
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use OCP\Files\File;
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use OCP\Files\Folder;
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use OCP\Files\NotFoundException;
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use OCP\User;
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class Trashbin {
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// unit: percentage; 50% of available disk space/quota
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const DEFAULTMAXSIZE = 50;
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/**
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* Whether versions have already be rescanned during this PHP request
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*
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* @var bool
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*/
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private static $scannedVersions = false;
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/**
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* Ensure we don't need to scan the file during the move to trash
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* by triggering the scan in the pre-hook
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*
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* @param array $params
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*/
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public static function ensureFileScannedHook($params) {
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try {
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self::getUidAndFilename($params['path']);
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} catch (NotFoundException $e) {
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// nothing to scan for non existing files
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}
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}
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/**
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* get the UID of the owner of the file and the path to the file relative to
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* owners files folder
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*
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* @param string $filename
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* @return array
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* @throws \OC\User\NoUserException
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*/
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public static function getUidAndFilename($filename) {
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$uid = Filesystem::getOwner($filename);
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$userManager = \OC::$server->getUserManager();
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// if the user with the UID doesn't exists, e.g. because the UID points
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// to a remote user with a federated cloud ID we use the current logged-in
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// user. We need a valid local user to move the file to the right trash bin
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if (!$userManager->userExists($uid)) {
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$uid = User::getUser();
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}
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if (!$uid) {
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// no owner, usually because of share link from ext storage
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return [null, null];
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}
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Filesystem::initMountPoints($uid);
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if ($uid !== User::getUser()) {
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$info = Filesystem::getFileInfo($filename);
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$ownerView = new View('/' . $uid . '/files');
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try {
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$filename = $ownerView->getPath($info['fileid']);
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} catch (NotFoundException $e) {
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$filename = null;
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}
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}
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return [$uid, $filename];
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}
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/**
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* get original location of files for user
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*
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* @param string $user
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* @return array (filename => array (timestamp => original location))
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*/
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public static function getLocations($user) {
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$query = \OC_DB::prepare('SELECT `id`, `timestamp`, `location`'
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. ' FROM `*PREFIX*files_trash` WHERE `user`=?');
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$result = $query->execute(array($user));
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$array = array();
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while ($row = $result->fetchRow()) {
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if (isset($array[$row['id']])) {
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$array[$row['id']][$row['timestamp']] = $row['location'];
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} else {
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$array[$row['id']] = array($row['timestamp'] => $row['location']);
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}
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}
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return $array;
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}
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/**
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* get original location of file
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*
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* @param string $user
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* @param string $filename
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* @param string $timestamp
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* @return string original location
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*/
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public static function getLocation($user, $filename, $timestamp) {
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$query = \OC_DB::prepare('SELECT `location` FROM `*PREFIX*files_trash`'
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. ' WHERE `user`=? AND `id`=? AND `timestamp`=?');
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$result = $query->execute(array($user, $filename, $timestamp))->fetchAll();
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if (isset($result[0]['location'])) {
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return $result[0]['location'];
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} else {
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return false;
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}
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}
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private static function setUpTrash($user) {
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$view = new View('/' . $user);
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if (!$view->is_dir('files_trashbin')) {
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$view->mkdir('files_trashbin');
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}
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if (!$view->is_dir('files_trashbin/files')) {
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$view->mkdir('files_trashbin/files');
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}
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if (!$view->is_dir('files_trashbin/versions')) {
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$view->mkdir('files_trashbin/versions');
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}
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if (!$view->is_dir('files_trashbin/keys')) {
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$view->mkdir('files_trashbin/keys');
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}
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}
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/**
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* copy file to owners trash
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*
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* @param string $sourcePath
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* @param string $owner
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* @param string $targetPath
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* @param $user
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* @param integer $timestamp
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*/
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private static function copyFilesToUser($sourcePath, $owner, $targetPath, $user, $timestamp) {
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self::setUpTrash($owner);
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$targetFilename = basename($targetPath);
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$targetLocation = dirname($targetPath);
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$sourceFilename = basename($sourcePath);
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$view = new View('/');
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$target = $user . '/files_trashbin/files/' . $targetFilename . '.d' . $timestamp;
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$source = $owner . '/files_trashbin/files/' . $sourceFilename . '.d' . $timestamp;
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self::copy_recursive($source, $target, $view);
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if ($view->file_exists($target)) {
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$query = \OC_DB::prepare("INSERT INTO `*PREFIX*files_trash` (`id`,`timestamp`,`location`,`user`) VALUES (?,?,?,?)");
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$result = $query->execute(array($targetFilename, $timestamp, $targetLocation, $user));
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if (!$result) {
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\OCP\Util::writeLog('files_trashbin', 'trash bin database couldn\'t be updated for the files owner', \OCP\Util::ERROR);
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}
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}
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}
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/**
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* move file to the trash bin
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*
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* @param string $file_path path to the deleted file/directory relative to the files root directory
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* @param bool $ownerOnly delete for owner only (if file gets moved out of a shared folder)
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*
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* @return bool
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*/
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public static function move2trash($file_path, $ownerOnly = false) {
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// get the user for which the filesystem is setup
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$root = Filesystem::getRoot();
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list(, $user) = explode('/', $root);
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list($owner, $ownerPath) = self::getUidAndFilename($file_path);
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// if no owner found (ex: ext storage + share link), will use the current user's trashbin then
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if (is_null($owner)) {
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$owner = $user;
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$ownerPath = $file_path;
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}
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$ownerView = new View('/' . $owner);
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// file has been deleted in between
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if (is_null($ownerPath) || $ownerPath === '' || !$ownerView->file_exists('/files/' . $ownerPath)) {
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return true;
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}
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self::setUpTrash($user);
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if ($owner !== $user) {
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// also setup for owner
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self::setUpTrash($owner);
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}
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$path_parts = pathinfo($ownerPath);
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$filename = $path_parts['basename'];
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$location = $path_parts['dirname'];
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$timestamp = time();
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// disable proxy to prevent recursive calls
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$trashPath = '/files_trashbin/files/' . $filename . '.d' . $timestamp;
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/** @var \OC\Files\Storage\Storage $trashStorage */
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list($trashStorage, $trashInternalPath) = $ownerView->resolvePath($trashPath);
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/** @var \OC\Files\Storage\Storage $sourceStorage */
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list($sourceStorage, $sourceInternalPath) = $ownerView->resolvePath('/files/' . $ownerPath);
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try {
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$moveSuccessful = true;
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if ($trashStorage->file_exists($trashInternalPath)) {
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$trashStorage->unlink($trashInternalPath);
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}
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$trashStorage->moveFromStorage($sourceStorage, $sourceInternalPath, $trashInternalPath);
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} catch (\OCA\Files_Trashbin\Exceptions\CopyRecursiveException $e) {
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$moveSuccessful = false;
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if ($trashStorage->file_exists($trashInternalPath)) {
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$trashStorage->unlink($trashInternalPath);
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}
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\OCP\Util::writeLog('files_trashbin', 'Couldn\'t move ' . $file_path . ' to the trash bin', \OCP\Util::ERROR);
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}
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if ($sourceStorage->file_exists($sourceInternalPath)) { // failed to delete the original file, abort
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if ($sourceStorage->is_dir($sourceInternalPath)) {
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$sourceStorage->rmdir($sourceInternalPath);
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} else {
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$sourceStorage->unlink($sourceInternalPath);
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}
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return false;
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}
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$trashStorage->getUpdater()->renameFromStorage($sourceStorage, $sourceInternalPath, $trashInternalPath);
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if ($moveSuccessful) {
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$query = \OC_DB::prepare("INSERT INTO `*PREFIX*files_trash` (`id`,`timestamp`,`location`,`user`) VALUES (?,?,?,?)");
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$result = $query->execute(array($filename, $timestamp, $location, $owner));
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if (!$result) {
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\OCP\Util::writeLog('files_trashbin', 'trash bin database couldn\'t be updated', \OCP\Util::ERROR);
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}
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\OCP\Util::emitHook('\OCA\Files_Trashbin\Trashbin', 'post_moveToTrash', array('filePath' => Filesystem::normalizePath($file_path),
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'trashPath' => Filesystem::normalizePath($filename . '.d' . $timestamp)));
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self::retainVersions($filename, $owner, $ownerPath, $timestamp);
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// if owner !== user we need to also add a copy to the users trash
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if ($user !== $owner && $ownerOnly === false) {
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self::copyFilesToUser($ownerPath, $owner, $file_path, $user, $timestamp);
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}
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}
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self::scheduleExpire($user);
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// if owner !== user we also need to update the owners trash size
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if ($owner !== $user) {
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self::scheduleExpire($owner);
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}
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return $moveSuccessful;
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}
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/**
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* Move file versions to trash so that they can be restored later
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*
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* @param string $filename of deleted file
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* @param string $owner owner user id
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* @param string $ownerPath path relative to the owner's home storage
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* @param integer $timestamp when the file was deleted
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*/
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private static function retainVersions($filename, $owner, $ownerPath, $timestamp) {
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if (\OCP\App::isEnabled('files_versions') && !empty($ownerPath)) {
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$user = User::getUser();
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$rootView = new View('/');
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if ($rootView->is_dir($owner . '/files_versions/' . $ownerPath)) {
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if ($owner !== $user) {
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self::copy_recursive($owner . '/files_versions/' . $ownerPath, $owner . '/files_trashbin/versions/' . basename($ownerPath) . '.d' . $timestamp, $rootView);
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}
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self::move($rootView, $owner . '/files_versions/' . $ownerPath, $user . '/files_trashbin/versions/' . $filename . '.d' . $timestamp);
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} else if ($versions = \OCA\Files_Versions\Storage::getVersions($owner, $ownerPath)) {
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foreach ($versions as $v) {
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if ($owner !== $user) {
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self::copy($rootView, $owner . '/files_versions' . $v['path'] . '.v' . $v['version'], $owner . '/files_trashbin/versions/' . $v['name'] . '.v' . $v['version'] . '.d' . $timestamp);
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}
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self::move($rootView, $owner . '/files_versions' . $v['path'] . '.v' . $v['version'], $user . '/files_trashbin/versions/' . $filename . '.v' . $v['version'] . '.d' . $timestamp);
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}
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}
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}
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}
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/**
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* Move a file or folder on storage level
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*
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* @param View $view
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* @param string $source
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* @param string $target
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* @return bool
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*/
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private static function move(View $view, $source, $target) {
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/** @var \OC\Files\Storage\Storage $sourceStorage */
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list($sourceStorage, $sourceInternalPath) = $view->resolvePath($source);
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/** @var \OC\Files\Storage\Storage $targetStorage */
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list($targetStorage, $targetInternalPath) = $view->resolvePath($target);
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/** @var \OC\Files\Storage\Storage $ownerTrashStorage */
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$result = $targetStorage->moveFromStorage($sourceStorage, $sourceInternalPath, $targetInternalPath);
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if ($result) {
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$targetStorage->getUpdater()->renameFromStorage($sourceStorage, $sourceInternalPath, $targetInternalPath);
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}
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return $result;
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}
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/**
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* Copy a file or folder on storage level
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*
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* @param View $view
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* @param string $source
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* @param string $target
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* @return bool
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*/
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private static function copy(View $view, $source, $target) {
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/** @var \OC\Files\Storage\Storage $sourceStorage */
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list($sourceStorage, $sourceInternalPath) = $view->resolvePath($source);
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/** @var \OC\Files\Storage\Storage $targetStorage */
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list($targetStorage, $targetInternalPath) = $view->resolvePath($target);
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/** @var \OC\Files\Storage\Storage $ownerTrashStorage */
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$result = $targetStorage->copyFromStorage($sourceStorage, $sourceInternalPath, $targetInternalPath);
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if ($result) {
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$targetStorage->getUpdater()->update($targetInternalPath);
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}
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return $result;
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}
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/**
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* Restore a file or folder from trash bin
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*
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* @param string $file path to the deleted file/folder relative to "files_trashbin/files/",
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* including the timestamp suffix ".d12345678"
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* @param string $filename name of the file/folder
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* @param int $timestamp time when the file/folder was deleted
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*
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* @return bool true on success, false otherwise
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*/
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public static function restore($file, $filename, $timestamp) {
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$user = User::getUser();
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$view = new View('/' . $user);
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$location = '';
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if ($timestamp) {
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$location = self::getLocation($user, $filename, $timestamp);
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if ($location === false) {
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\OCP\Util::writeLog('files_trashbin', 'trash bin database inconsistent! ($user: ' . $user . ' $filename: ' . $filename . ', $timestamp: ' . $timestamp . ')', \OCP\Util::ERROR);
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} else {
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// if location no longer exists, restore file in the root directory
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if ($location !== '/' &&
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(!$view->is_dir('files/' . $location) ||
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!$view->isCreatable('files/' . $location))
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) {
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$location = '';
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}
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}
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}
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// we need a extension in case a file/dir with the same name already exists
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$uniqueFilename = self::getUniqueFilename($location, $filename, $view);
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$source = Filesystem::normalizePath('files_trashbin/files/' . $file);
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$target = Filesystem::normalizePath('files/' . $location . '/' . $uniqueFilename);
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if (!$view->file_exists($source)) {
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return false;
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}
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$mtime = $view->filemtime($source);
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// restore file
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$restoreResult = $view->rename($source, $target);
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// handle the restore result
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if ($restoreResult) {
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$fakeRoot = $view->getRoot();
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$view->chroot('/' . $user . '/files');
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$view->touch('/' . $location . '/' . $uniqueFilename, $mtime);
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$view->chroot($fakeRoot);
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\OCP\Util::emitHook('\OCA\Files_Trashbin\Trashbin', 'post_restore', array('filePath' => Filesystem::normalizePath('/' . $location . '/' . $uniqueFilename),
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'trashPath' => Filesystem::normalizePath($file)));
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self::restoreVersions($view, $file, $filename, $uniqueFilename, $location, $timestamp);
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if ($timestamp) {
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$query = \OC_DB::prepare('DELETE FROM `*PREFIX*files_trash` WHERE `user`=? AND `id`=? AND `timestamp`=?');
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$query->execute(array($user, $filename, $timestamp));
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}
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return true;
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}
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return false;
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}
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/**
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* restore versions from trash bin
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*
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* @param View $view file view
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* @param string $file complete path to file
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* @param string $filename name of file once it was deleted
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* @param string $uniqueFilename new file name to restore the file without overwriting existing files
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* @param string $location location if file
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* @param int $timestamp deletion time
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* @return false|null
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*/
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private static function restoreVersions(View $view, $file, $filename, $uniqueFilename, $location, $timestamp) {
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if (\OCP\App::isEnabled('files_versions')) {
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$user = User::getUser();
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$rootView = new View('/');
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$target = Filesystem::normalizePath('/' . $location . '/' . $uniqueFilename);
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list($owner, $ownerPath) = self::getUidAndFilename($target);
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// file has been deleted in between
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if (empty($ownerPath)) {
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return false;
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}
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if ($timestamp) {
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$versionedFile = $filename;
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} else {
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$versionedFile = $file;
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}
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if ($view->is_dir('/files_trashbin/versions/' . $file)) {
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$rootView->rename(Filesystem::normalizePath($user . '/files_trashbin/versions/' . $file), Filesystem::normalizePath($owner . '/files_versions/' . $ownerPath));
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} else if ($versions = self::getVersionsFromTrash($versionedFile, $timestamp, $user)) {
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foreach ($versions as $v) {
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if ($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();
|
|
$userRoot = \OC::$server->getUserFolder($user)->getParent();
|
|
$view = new View('/' . $user);
|
|
$fileInfos = $view->getDirectoryContent('files_trashbin/files');
|
|
|
|
try {
|
|
$trash = $userRoot->get('files_trashbin');
|
|
} catch (NotFoundException $e) {
|
|
return false;
|
|
}
|
|
|
|
// 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
|
|
$trash->delete();
|
|
$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);
|
|
}
|
|
|
|
$trash = $userRoot->newFolder('files_trashbin');
|
|
$trash->newFolder('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) {
|
|
$userRoot = \OC::$server->getUserFolder($user)->getParent();
|
|
$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);
|
|
|
|
try {
|
|
$node = $userRoot->get('/files_trashbin/files/' . $file);
|
|
} catch (NotFoundException $e) {
|
|
return $size;
|
|
}
|
|
|
|
if ($node instanceof Folder) {
|
|
$size += self::calculateSize(new View('/' . $user . '/files_trashbin/files/' . $file));
|
|
} else if ($node instanceof File) {
|
|
$size += $view->filesize('/files_trashbin/files/' . $file);
|
|
}
|
|
|
|
self::emitTrashbinPreDelete('/files_trashbin/files/' . $file);
|
|
$node->delete();
|
|
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 Nextcloud
|
|
*
|
|
* @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', \OC::$SERVERROOT . '/data') . $view->getAbsolutePath('');
|
|
if (!file_exists($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));
|
|
}
|
|
}
|