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7432c73f5c
Whenever versions need to be rescanned, only do it once per PHP request. Happens whenever multiple files need to be expired.
978 lines
31 KiB
PHP
978 lines
31 KiB
PHP
<?php
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/**
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* ownCloud - trash bin
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*
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* @author Bjoern Schiessle
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* @copyright 2013 Bjoern Schiessle schiessle@owncloud.com
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU AFFERO GENERAL PUBLIC LICENSE
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* License as published by the Free Software Foundation; either
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* version 3 of the License, or any later version.
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*
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* This library 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
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* License along with this library. 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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class Trashbin {
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// how long do we keep files in the trash bin if no other value is defined in the config file (unit: days)
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const DEFAULT_RETENTION_OBLIGATION = 30;
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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 $scannedVersions = false;
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public static function getUidAndFilename($filename) {
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$uid = \OC\Files\Filesystem::getOwner($filename);
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\OC\Files\Filesystem::initMountPoints($uid);
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if ($uid != \OCP\User::getUser()) {
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$info = \OC\Files\Filesystem::getFileInfo($filename);
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$ownerView = new \OC\Files\View('/' . $uid . '/files');
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$filename = $ownerView->getPath($info['fileid']);
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}
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return array($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 \OC\Files\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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* @param string $sourcePath
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* @param string $owner
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* @param string $ownerPath
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* @param integer $timestamp
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*/
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private static function copyFilesToOwner($sourcePath, $owner, $ownerPath, $timestamp) {
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self::setUpTrash($owner);
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$ownerFilename = basename($ownerPath);
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$ownerLocation = dirname($ownerPath);
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$sourceFilename = basename($sourcePath);
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$view = new \OC\Files\View('/');
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$source = \OCP\User::getUser() . '/files_trashbin/files/' . $sourceFilename . '.d' . $timestamp;
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$target = $owner . '/files_trashbin/files/' . $ownerFilename . '.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 = $query->execute(array($ownerFilename, $timestamp, $ownerLocation, $owner));
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if (!$result) {
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\OC_Log::write('files_trashbin', 'trash bin database couldn\'t be updated for the files owner', \OC_log::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 $file_path path to the deleted file/directory relative to the files root directory
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*/
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public static function move2trash($file_path) {
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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('/', $root);
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$size = 0;
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list($owner, $ownerPath) = self::getUidAndFilename($file_path);
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$view = new \OC\Files\View('/' . $user);
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// file has been deleted in between
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if (!$view->file_exists('/files/' . $file_path)) {
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return true;
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}
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self::setUpTrash($user);
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$path_parts = pathinfo($file_path);
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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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$userTrashSize = self::getTrashbinSize($user);
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// disable proxy to prevent recursive calls
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$proxyStatus = \OC_FileProxy::$enabled;
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\OC_FileProxy::$enabled = false;
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$trashPath = '/files_trashbin/files/' . $filename . '.d' . $timestamp;
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try {
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$sizeOfAddedFiles = $view->filesize('/files/' . $file_path);
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if ($view->file_exists($trashPath)) {
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$view->unlink($trashPath);
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}
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$view->rename('/files/' . $file_path, $trashPath);
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} catch (\OCA\Files_Trashbin\Exceptions\CopyRecursiveException $e) {
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$sizeOfAddedFiles = false;
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if ($view->file_exists($trashPath)) {
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$view->deleteAll($trashPath);
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}
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\OC_Log::write('files_trashbin', 'Couldn\'t move ' . $file_path . ' to the trash bin', \OC_log::ERROR);
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}
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\OC_FileProxy::$enabled = $proxyStatus;
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if ($view->file_exists('/files/' . $file_path)) { // failed to delete the original file, abort
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$view->unlink($trashPath);
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return false;
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}
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if ($sizeOfAddedFiles !== false) {
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$size = $sizeOfAddedFiles;
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$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, $user));
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if (!$result) {
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\OC_Log::write('files_trashbin', 'trash bin database couldn\'t be updated', \OC_log::ERROR);
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}
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\OCP\Util::emitHook('\OCA\Files_Trashbin\Trashbin', 'post_moveToTrash', array('filePath' => \OC\Files\Filesystem::normalizePath($file_path),
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'trashPath' => \OC\Files\Filesystem::normalizePath($filename . '.d' . $timestamp)));
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$size += self::retainVersions($file_path, $filename, $timestamp);
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$size += self::retainEncryptionKeys($file_path, $filename, $timestamp);
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// if owner !== user we need to also add a copy to the owners trash
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if ($user !== $owner) {
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self::copyFilesToOwner($file_path, $owner, $ownerPath, $timestamp);
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}
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}
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$userTrashSize += $size;
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$userTrashSize -= self::expire($userTrashSize, $user);
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// if owner !== user we also need to update the owners trash size
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if ($owner !== $user) {
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$ownerTrashSize = self::getTrashbinSize($owner);
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$ownerTrashSize += $size;
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$ownerTrashSize -= self::expire($ownerTrashSize, $owner);
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}
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return ($sizeOfAddedFiles === false) ? false : true;
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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 $file_path path to original file
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* @param string $filename of deleted file
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* @param integer $timestamp when the file was deleted
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*
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* @return int size of stored versions
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*/
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private static function retainVersions($file_path, $filename, $timestamp) {
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$size = 0;
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if (\OCP\App::isEnabled('files_versions')) {
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// disable proxy to prevent recursive calls
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$proxyStatus = \OC_FileProxy::$enabled;
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\OC_FileProxy::$enabled = false;
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$user = \OCP\User::getUser();
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$rootView = new \OC\Files\View('/');
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list($owner, $ownerPath) = self::getUidAndFilename($file_path);
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// file has been deleted in between
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if (empty($ownerPath)) {
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return 0;
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}
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if ($rootView->is_dir($owner . '/files_versions/' . $ownerPath)) {
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$size += self::calculateSize(new \OC\Files\View('/' . $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, $rootView);
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}
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$rootView->rename($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 $v) {
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$size += $rootView->filesize($owner . '/files_versions' . $v['path'] . '.v' . $v['version']);
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if ($owner !== $user) {
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$rootView->copy($owner . '/files_versions' . $v['path'] . '.v' . $v['version'], $owner . '/files_trashbin/versions/' . $v['name'] . '.v' . $v['version'] . '.d' . $timestamp);
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}
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$rootView->rename($owner . '/files_versions' . $v['path'] . '.v' . $v['version'], $user . '/files_trashbin/versions/' . $filename . '.v' . $v['version'] . '.d' . $timestamp);
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}
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}
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// enable proxy
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\OC_FileProxy::$enabled = $proxyStatus;
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}
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return $size;
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}
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/**
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* Move encryption keys to trash so that they can be restored later
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*
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* @param string $file_path path to original file
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* @param string $filename of deleted file
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* @param integer $timestamp when the file was deleted
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*
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* @return int size of encryption keys
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*/
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private static function retainEncryptionKeys($file_path, $filename, $timestamp) {
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$size = 0;
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if (\OCP\App::isEnabled('files_encryption')) {
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$user = \OCP\User::getUser();
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$rootView = new \OC\Files\View('/');
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list($owner, $ownerPath) = self::getUidAndFilename($file_path);
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// file has been deleted in between
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if (empty($ownerPath)) {
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return 0;
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}
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$util = new \OCA\Files_Encryption\Util($rootView, $user);
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$baseDir = '/files_encryption/';
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if (!$util->isSystemWideMountPoint($ownerPath)) {
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$baseDir = $owner . $baseDir;
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}
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$keyfiles = \OC\Files\Filesystem::normalizePath($baseDir . '/keys/' . $ownerPath);
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if ($rootView->is_dir($keyfiles)) {
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$size += self::calculateSize(new \OC\Files\View($keyfiles));
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if ($owner !== $user) {
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self::copy_recursive($keyfiles, $owner . '/files_trashbin/keys/' . basename($ownerPath) . '.d' . $timestamp, $rootView);
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}
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$rootView->rename($keyfiles, $user . '/files_trashbin/keys/' . $filename . '.d' . $timestamp);
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}
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}
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return $size;
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}
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/**
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* restore files from trash bin
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*
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* @param string $file path to the deleted file
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* @param string $filename name of the file
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* @param int $timestamp time when the file was deleted
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*
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* @return bool
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*/
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public static function restore($file, $filename, $timestamp) {
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$user = \OCP\User::getUser();
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$view = new \OC\Files\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_Log::write('files_trashbin', 'trash bin database inconsistent!', \OC_Log::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 = \OC\Files\Filesystem::normalizePath('files_trashbin/files/' . $file);
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$target = \OC\Files\Filesystem::normalizePath('files/' . $location . '/' . $uniqueFilename);
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$mtime = $view->filemtime($source);
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// disable proxy to prevent recursive calls
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$proxyStatus = \OC_FileProxy::$enabled;
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\OC_FileProxy::$enabled = false;
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// restore file
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$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' => \OC\Files\Filesystem::normalizePath('/' . $location . '/' . $uniqueFilename),
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'trashPath' => \OC\Files\Filesystem::normalizePath($file)));
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self::restoreVersions($view, $file, $filename, $uniqueFilename, $location, $timestamp);
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self::restoreEncryptionKeys($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, $timestamp));
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}
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// enable proxy
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\OC_FileProxy::$enabled = $proxyStatus;
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return true;
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}
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// enable proxy
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\OC_FileProxy::$enabled = $proxyStatus;
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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 \OC\Files\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 bool
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*/
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private static function restoreVersions(\OC\Files\View $view, $file, $filename, $uniqueFilename, $location, $timestamp) {
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if (\OCP\App::isEnabled('files_versions')) {
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// disable proxy to prevent recursive calls
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$proxyStatus = \OC_FileProxy::$enabled;
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\OC_FileProxy::$enabled = false;
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$user = \OCP\User::getUser();
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$rootView = new \OC\Files\View('/');
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$target = \OC\Files\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($ownerPath)) {
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\OC_FileProxy::$enabled = $proxyStatus;
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return false;
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}
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if ($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(\OC\Files\Filesystem::normalizePath($user . '/files_trashbin/versions/' . $file), \OC\Files\Filesystem::normalizePath($owner . '/files_versions/' . $ownerPath));
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} else if ($versions = self::getVersionsFromTrash($versionedFile, $timestamp)) {
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foreach ($versions as $v) {
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if ($timestamp) {
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$rootView->rename($user . '/files_trashbin/versions/' . $versionedFile . '.v' . $v . '.d' . $timestamp, $owner . '/files_versions/' . $ownerPath . '.v' . $v);
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} else {
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$rootView->rename($user . '/files_trashbin/versions/' . $versionedFile . '.v' . $v, $owner . '/files_versions/' . $ownerPath . '.v' . $v);
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}
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}
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}
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// enable proxy
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\OC_FileProxy::$enabled = $proxyStatus;
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}
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}
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/**
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* restore encryption keys from trash bin
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*
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* @param \OC\Files\View $view
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* @param string $file complete path to file
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* @param string $filename name of file
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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 of file
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* @param int $timestamp deletion time
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* @return bool
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*/
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private static function restoreEncryptionKeys(\OC\Files\View $view, $file, $filename, $uniqueFilename, $location, $timestamp) {
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if (\OCP\App::isEnabled('files_encryption')) {
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$user = \OCP\User::getUser();
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$rootView = new \OC\Files\View('/');
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$target = \OC\Files\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($ownerPath)) {
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return false;
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}
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$util = new \OCA\Files_Encryption\Util($rootView, $user);
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$baseDir = '/files_encryption/';
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if (!$util->isSystemWideMountPoint($ownerPath)) {
|
|
$baseDir = $owner . $baseDir;
|
|
}
|
|
|
|
$source_location = dirname($file);
|
|
|
|
if ($view->is_dir('/files_trashbin/keys/' . $file)) {
|
|
if ($source_location != '.') {
|
|
$keyfile = \OC\Files\Filesystem::normalizePath($user . '/files_trashbin/keys/' . $source_location . '/' . $filename);
|
|
} else {
|
|
$keyfile = \OC\Files\Filesystem::normalizePath($user . '/files_trashbin/keys/' . $filename);
|
|
}
|
|
}
|
|
|
|
if ($timestamp) {
|
|
$keyfile .= '.d' . $timestamp;
|
|
}
|
|
|
|
if ($rootView->is_dir($keyfile)) {
|
|
$rootView->rename($keyfile, $baseDir . '/keys/' . $ownerPath);
|
|
}
|
|
|
|
}
|
|
}
|
|
|
|
/**
|
|
* delete all files from the trash
|
|
*/
|
|
public static function deleteAll() {
|
|
$user = \OCP\User::getUser();
|
|
$view = new \OC\Files\View('/' . $user);
|
|
$view->deleteAll('files_trashbin');
|
|
$query = \OC_DB::prepare('DELETE FROM `*PREFIX*files_trash` WHERE `user`=?');
|
|
$query->execute(array($user));
|
|
|
|
return true;
|
|
}
|
|
|
|
|
|
/**
|
|
* delete file from trash bin permanently
|
|
*
|
|
* @param string $filename path to the file
|
|
* @param string $user
|
|
* @param int $timestamp of deletion time
|
|
*
|
|
* @return int size of deleted files
|
|
*/
|
|
public static function delete($filename, $user, $timestamp = null) {
|
|
$view = new \OC\Files\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);
|
|
$size += self::deleteEncryptionKeys($view, $file, $filename, $timestamp);
|
|
|
|
if ($view->is_dir('/files_trashbin/files/' . $file)) {
|
|
$size += self::calculateSize(new \OC\Files\View('/' . $user . '/files_trashbin/files/' . $file));
|
|
} else {
|
|
$size += $view->filesize('/files_trashbin/files/' . $file);
|
|
}
|
|
\OC_Hook::emit('\OCP\Trashbin', 'preDelete', array('path' => '/files_trashbin/files/' . $file));
|
|
$view->unlink('/files_trashbin/files/' . $file);
|
|
\OC_Hook::emit('\OCP\Trashbin', 'delete', array('path' => '/files_trashbin/files/' . $file));
|
|
|
|
return $size;
|
|
}
|
|
|
|
/**
|
|
* @param \OC\Files\View $view
|
|
* @param $file
|
|
* @param $filename
|
|
* @param $timestamp
|
|
* @return int
|
|
*/
|
|
private static function deleteVersions(\OC\Files\View $view, $file, $filename, $timestamp) {
|
|
$size = 0;
|
|
if (\OCP\App::isEnabled('files_versions')) {
|
|
$user = \OCP\User::getUser();
|
|
if ($view->is_dir('files_trashbin/versions/' . $file)) {
|
|
$size += self::calculateSize(new \OC\Files\view('/' . $user . '/files_trashbin/versions/' . $file));
|
|
$view->unlink('files_trashbin/versions/' . $file);
|
|
} else if ($versions = self::getVersionsFromTrash($filename, $timestamp)) {
|
|
foreach ($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;
|
|
}
|
|
|
|
/**
|
|
* @param \OC\Files\View $view
|
|
* @param $file
|
|
* @param $filename
|
|
* @param $timestamp
|
|
* @return int
|
|
*/
|
|
private static function deleteEncryptionKeys(\OC\Files\View $view, $file, $filename, $timestamp) {
|
|
$size = 0;
|
|
if (\OCP\App::isEnabled('files_encryption')) {
|
|
$user = \OCP\User::getUser();
|
|
|
|
$keyfiles = \OC\Files\Filesystem::normalizePath('files_trashbin/keys/' . $filename);
|
|
|
|
if ($timestamp) {
|
|
$keyfiles .= '.d' . $timestamp;
|
|
}
|
|
if ($view->is_dir($keyfiles)) {
|
|
$size += self::calculateSize(new \OC\Files\View('/' . $user . '/' . $keyfiles));
|
|
$view->deleteAll($keyfiles);
|
|
|
|
}
|
|
}
|
|
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 = \OCP\User::getUser();
|
|
$view = new \OC\Files\View('/' . $user);
|
|
|
|
if ($timestamp) {
|
|
$filename = $filename . '.d' . $timestamp;
|
|
} else {
|
|
$filename = $filename;
|
|
}
|
|
|
|
$target = \OC\Files\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) {
|
|
$config = \OC::$server->getConfig();
|
|
|
|
$softQuota = true;
|
|
$quota = $config->getUserValue($user, 'files', 'quota', null);
|
|
$view = new \OC\Files\View('/' . $user);
|
|
if ($quota === null || $quota === 'default') {
|
|
$quota = $config->getAppValue('files', 'default_quota', null);
|
|
}
|
|
if ($quota === null || $quota === 'none') {
|
|
$quota = \OC\Files\Filesystem::free_space('/');
|
|
$softQuota = false;
|
|
if ($quota === \OCP\Files\FileInfo::SPACE_UNKNOWN) {
|
|
$quota = 0;
|
|
}
|
|
} 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) {
|
|
$rootInfo = $view->getFileInfo('/files/', false);
|
|
$free = $quota - $rootInfo['size']; // remaining free space for user
|
|
if ($free > 0) {
|
|
$availableSpace = ($free * self::DEFAULTMAXSIZE / 100) - $trashbinSize; // how much space can be used for versions
|
|
} else {
|
|
$availableSpace = $free - $trashbinSize;
|
|
}
|
|
} else {
|
|
$availableSpace = $quota;
|
|
}
|
|
|
|
return $availableSpace;
|
|
}
|
|
|
|
/**
|
|
* resize trash bin if necessary after a new file was added to ownCloud
|
|
* @param string $user user id
|
|
*/
|
|
public static function resizeTrash($user) {
|
|
|
|
$size = self::getTrashbinSize($user);
|
|
|
|
$freeSpace = self::calculateFreeSpace($size, $user);
|
|
|
|
if ($freeSpace < 0) {
|
|
self::expire($size, $user);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* clean up the trash bin
|
|
*
|
|
* @param int $trashbinSize current size of the trash bin
|
|
* @param string $user
|
|
* @return int size of expired files
|
|
*/
|
|
private static function expire($trashbinSize, $user) {
|
|
|
|
// let the admin disable auto expire
|
|
$autoExpire = \OC_Config::getValue('trashbin_auto_expire', true);
|
|
if ($autoExpire === false) {
|
|
return 0;
|
|
}
|
|
|
|
$availableSpace = self::calculateFreeSpace($trashbinSize, $user);
|
|
$size = 0;
|
|
|
|
$retention_obligation = \OC_Config::getValue('trashbin_retention_obligation', self::DEFAULT_RETENTION_OBLIGATION);
|
|
|
|
$limit = time() - ($retention_obligation * 86400);
|
|
|
|
$dirContent = Helper::getTrashFiles('/', $user, 'mtime');
|
|
|
|
// delete all files older then $retention_obligation
|
|
list($delSize, $count) = self::deleteExpiredFiles($dirContent, $user, $limit, $retention_obligation);
|
|
|
|
$size += $delSize;
|
|
$availableSpace += $size;
|
|
|
|
// delete files from trash until we meet the trash bin size limit again
|
|
$size += self::deleteFiles(array_slice($dirContent, $count), $user, $availableSpace);
|
|
|
|
return $size;
|
|
}
|
|
|
|
/**
|
|
* 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) {
|
|
$size = 0;
|
|
|
|
if ($availableSpace < 0) {
|
|
foreach ($files as $file) {
|
|
if ($availableSpace < 0) {
|
|
$tmp = self::delete($file['name'], $user, $file['mtime']);
|
|
\OC_Log::write('files_trashbin', 'remove "' . $file['name'] . '" (' . $tmp . 'B) to meet the limit of trash bin size (50% of available quota)', \OC_log::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
|
|
* @param int $limit files older then limit should be deleted
|
|
* @param int $retention_obligation max age of file in days
|
|
* @return array size of deleted files and number of deleted files
|
|
*/
|
|
protected static function deleteExpiredFiles($files, $user, $limit, $retention_obligation) {
|
|
$size = 0;
|
|
$count = 0;
|
|
foreach ($files as $file) {
|
|
$timestamp = $file['mtime'];
|
|
$filename = $file['name'];
|
|
if ($timestamp <= $limit) {
|
|
$count++;
|
|
$size += self::delete($filename, $user, $timestamp);
|
|
\OC_Log::write('files_trashbin', 'remove "' . $filename . '" from trash bin because it is older than ' . $retention_obligation, \OC_log::INFO);
|
|
} else {
|
|
break;
|
|
}
|
|
}
|
|
|
|
return array($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 \OC\Files\View $view file view for the users root directory
|
|
* @return int
|
|
* @throws Exceptions\CopyRecursiveException
|
|
*/
|
|
private static function copy_recursive($source, $destination, \OC\Files\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) {
|
|
$view = new \OC\Files\View('/' . \OCP\User::getUser() . '/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 \OC\Files\View $view filesystem view relative to users root directory
|
|
* @return string with unique extension
|
|
*/
|
|
private static function getUniqueFilename($location, $filename, \OC\Files\View $view) {
|
|
$ext = pathinfo($filename, PATHINFO_EXTENSION);
|
|
$name = pathinfo($filename, PATHINFO_FILENAME);
|
|
$l = \OC::$server->getL10N('files_trashbin');
|
|
|
|
// 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 \OC\Files\View $view file view on the root folder
|
|
* @return integer size of the folder
|
|
*/
|
|
private static function calculateSize($view) {
|
|
$root = \OC::$server->getConfig()->getSystemValue('datadirectory') . $view->getAbsolutePath('');
|
|
if (!file_exists($root)) {
|
|
return 0;
|
|
}
|
|
$iterator = new \RecursiveIteratorIterator(new \RecursiveDirectoryIterator($root), \RecursiveIteratorIterator::CHILD_FIRST);
|
|
$size = 0;
|
|
|
|
/**
|
|
* RecursiveDirectoryIterator on an NFS path isn't iterable with foreach
|
|
* This bug is fixed in PHP 5.5.9 or before
|
|
* See #8376
|
|
*/
|
|
$iterator->rewind();
|
|
while ($iterator->valid()) {
|
|
$path = $iterator->current();
|
|
$relpath = substr($path, strlen($root) - 1);
|
|
if (!$view->is_dir($relpath)) {
|
|
$size += $view->filesize($relpath);
|
|
}
|
|
$iterator->next();
|
|
}
|
|
return $size;
|
|
}
|
|
|
|
/**
|
|
* get current size of trash bin from a given user
|
|
*
|
|
* @param string $user user who owns the trash bin
|
|
* @return integer trash bin size
|
|
*/
|
|
private static function getTrashbinSize($user) {
|
|
$view = new \OC\Files\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', 'setup', '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', '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 \OC\Files\View('/' . $user . '/files_trashbin');
|
|
if ($view->is_dir('/files') && $dh = $view->opendir('/files')) {
|
|
while ($file = readdir($dh)) {
|
|
if ($file !== '.' and $file !== '..') {
|
|
return false;
|
|
}
|
|
}
|
|
}
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* @param $path
|
|
* @return string
|
|
*/
|
|
public static function preview_icon($path) {
|
|
return \OC_Helper::linkToRoute('core_ajax_trashbin_preview', array('x' => 36, 'y' => 36, 'file' => $path));
|
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}
|
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}
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