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<?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 Bjoern Schiessle <bjoern@schiessle.org> |
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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 <oc.list@georgehrke.com> |
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* @author Joas Schilling <coding@schilljs.com> |
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* @author Juan Pablo Villafáñez <jvillafanez@solidgear.es> |
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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 Steven Bühner <buehner@me.com> |
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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\Files\NotPermittedException; |
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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' . $timestamp; |
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$free = $view->free_space($target); |
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$isUnknownOrUnlimitedFreeSpace = $free < 0; |
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$isEnoughFreeSpaceLeft = $view->filesize($source) < $free; |
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if ($isUnknownOrUnlimitedFreeSpace || $isEnoughFreeSpaceLeft) { |
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self::copy_recursive($source, $target, $view); |
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} |
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if ($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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\OC::$server->getLogger()->error('trash bin database couldn\'t be updated for the files owner', ['app' => 'files_trashbin']); |
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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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\OC::$server->getLogger()->error('Couldn\'t move ' . $file_path . ' to the trash bin', ['app' => 'files_trashbin']); |
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} |
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if ($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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\OC::$server->getLogger()->error('trash bin database couldn\'t be updated', ['app' => 'files_trashbin']); |
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} |
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\OCP\Util::emitHook('\OCA\Files_Trashbin\Trashbin', 'post_moveToTrash', array('filePath' => Filesystem::normalizePath($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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\OC::$server->getLogger()->error('trash bin database inconsistent! ($user: ' . $user . ' $filename: ' . $filename . ', $timestamp: ' . $timestamp . ')', ['app' => 'files_trashbin']); |
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} else { |
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// if location no longer exists, restore file in the root directory |
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if ($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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if (!$view->isCreatable(dirname($target))) { |
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throw new NotPermittedException("Can't restore trash item because the target folder is not writable"); |
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} |
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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) { |
|
|
$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(); |
|
|
$userRoot = \OC::$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; |
|
|
} |
|
|
|
|
|
$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 - $userFolder->getSize(false); // remaining free space for user |
|
|
if ($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, $file['mtime']); |
|
|
\OC::$server->getLogger()->info('remove "' . $file['name'] . '" (' . $tmp . 'B) to meet the limit of trash bin size (50% of available quota)', ['app' => 'files_trashbin']); |
|
|
$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)) { |
|
|
try { |
|
|
$size += self::delete($filename, $user, $timestamp); |
|
|
$count++; |
|
|
} catch (\OCP\Files\NotPermittedException $e) { |
|
|
\OC::$server->getLogger()->logException($e, ['app' => 'files_trashbin', 'level' => \OCP\ILogger::WARN, 'message' => 'Removing "' . $filename . '" from trashbin failed.']); |
|
|
} |
|
|
\OC::$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'); |
|
|
} |
|
|
|
|
|
/** |
|
|
* 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 \OC::$server->getURLGenerator()->linkToRoute('core_ajax_trashbin_preview', array('x' => 32, 'y' => 32, 'file' => $path)); |
|
|
} |
|
|
}
|
|
|
|