861 lines
30 KiB
PHP
861 lines
30 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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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 = 180;
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// unit: percentage; 50% of available disk space/quota
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const DEFAULTMAXSIZE = 50;
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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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* move file to the trash bin
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*
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* @param $file_path path to the deleted file/directory relative to the files root directory
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*/
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public static function move2trash($file_path) {
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$user = \OCP\User::getUser();
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$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/keyfiles')) {
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$view->mkdir('files_trashbin/keyfiles');
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}
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if (!$view->is_dir('files_trashbin/share-keys')) {
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$view->mkdir('files_trashbin/share-keys');
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}
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$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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$mime = $view->getMimeType('files' . $file_path);
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if ($view->is_dir('files' . $file_path)) {
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$type = 'dir';
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} else {
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$type = 'file';
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}
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$trashbinSize = self::getTrashbinSize($user);
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if ($trashbinSize === false || $trashbinSize < 0) {
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$trashbinSize = self::calculateSize(new \OC\Files\View('/' . $user . '/files_trashbin'));
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}
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// disable proxy to prevent recursive calls
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$proxyStatus = \OC_FileProxy::$enabled;
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\OC_FileProxy::$enabled = false;
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$sizeOfAddedFiles = self::copy_recursive($file_path, 'files_trashbin/files/' . $filename . '.d' . $timestamp, $view);
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\OC_FileProxy::$enabled = $proxyStatus;
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if ($view->file_exists('files_trashbin/files/' . $filename . '.d' . $timestamp)) {
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$trashbinSize += $sizeOfAddedFiles;
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$query = \OC_DB::prepare("INSERT INTO `*PREFIX*files_trash` (`id`,`timestamp`,`location`,`type`,`mime`,`user`) VALUES (?,?,?,?,?,?)");
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$result = $query->execute(array($filename, $timestamp, $location, $type, $mime, $user));
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if (!$result) { // if file couldn't be added to the database than also don't store it in the trash bin.
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$view->deleteAll('files_trashbin/files/' . $filename . '.d' . $timestamp);
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\OC_Log::write('files_trashbin', 'trash bin database couldn\'t be updated', \OC_log::ERROR);
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return;
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}
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\OCP\Util::emitHook('\OCA\Files_Trashbin\Trashbin', 'post_moveToTrash', array('filePath' => \OC\Files\Filesystem::normalizePath($file_path),
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'trashPath' => \OC\Files\Filesystem::normalizePath($filename . '.d' . $timestamp)));
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$trashbinSize += self::retainVersions($view, $file_path, $filename, $timestamp);
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$trashbinSize += self::retainEncryptionKeys($view, $file_path, $filename, $timestamp);
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} else {
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\OC_Log::write('files_trashbin', 'Couldn\'t move ' . $file_path . ' to the trash bin', \OC_log::ERROR);
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}
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$trashbinSize -= self::expire($trashbinSize);
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self::setTrashbinSize($user, $trashbinSize);
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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 \OC\Files\View $view
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* @param $file_path path to original file
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* @param $filename of deleted file
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* @param $timestamp when the file was deleted
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*
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* @return size of stored versions
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*/
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private static function retainVersions($view, $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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if ($rootView->is_dir($owner . '/files_versions/' . $ownerPath)) {
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$size += self::calculateSize(new \OC\Files\View('/' . $owner . '/files_versions/' . $ownerPath));
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$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' . $v['version']);
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$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 \OC\Files\View $view
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* @param $file_path path to original file
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* @param $filename of deleted file
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* @param $timestamp when the file was deleted
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*
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* @return size of encryption keys
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*/
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private static function retainEncryptionKeys($view, $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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$util = new \OCA\Encryption\Util(new \OC_FilesystemView('/'), $user);
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// disable proxy to prevent recursive calls
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$proxyStatus = \OC_FileProxy::$enabled;
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\OC_FileProxy::$enabled = false;
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if ($util->isSystemWideMountPoint($ownerPath)) {
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$baseDir = '/files_encryption/';
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} else {
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$baseDir = $owner . '/files_encryption/';
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}
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$keyfile = \OC\Files\Filesystem::normalizePath($baseDir . '/keyfiles/' . $ownerPath);
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if ($rootView->is_dir($keyfile) || $rootView->file_exists($keyfile . '.key')) {
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// move keyfiles
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if ($rootView->is_dir($keyfile)) {
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$size += self::calculateSize(new \OC\Files\View($keyfile));
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$rootView->rename($keyfile, $user . '/files_trashbin/keyfiles/' . $filename . '.d' . $timestamp);
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} else {
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$size += $rootView->filesize($keyfile . '.key');
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$rootView->rename($keyfile . '.key', $user . '/files_trashbin/keyfiles/' . $filename . '.key.d' . $timestamp);
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}
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}
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// retain share keys
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$sharekeys = \OC\Files\Filesystem::normalizePath($baseDir . '/share-keys/' . $ownerPath);
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if ($rootView->is_dir($sharekeys)) {
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$size += self::calculateSize(new \OC\Files\View($sharekeys));
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$rootView->rename($sharekeys, $user . '/files_trashbin/share-keys/' . $filename . '.d' . $timestamp);
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} else {
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// get local path to share-keys
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$localShareKeysPath = $rootView->getLocalFile($sharekeys);
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$escapedLocalShareKeysPath = preg_replace('/(\*|\?|\[)/', '[$1]', $localShareKeysPath);
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// handle share-keys
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$matches = glob($escapedLocalShareKeysPath . '*.shareKey');
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foreach ($matches as $src) {
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// get source file parts
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$pathinfo = pathinfo($src);
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// we only want to keep the owners key so we can access the private key
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$ownerShareKey = $filename . '.' . $user . '.shareKey';
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// if we found the share-key for the owner, we need to move it to files_trashbin
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if ($pathinfo['basename'] == $ownerShareKey) {
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// calculate size
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$size += $rootView->filesize($sharekeys . '.' . $user . '.shareKey');
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// move file
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$rootView->rename($sharekeys . '.' . $user . '.shareKey', $user . '/files_trashbin/share-keys/' . $ownerShareKey . '.d' . $timestamp);
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} else {
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// calculate size
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$size += filesize($src);
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// don't keep other share-keys
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unlink($src);
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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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return $size;
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}
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/**
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* restore files from trash bin
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* @param $file path to the deleted file
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* @param $filename name of the file
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* @param $timestamp time when the file was deleted
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*
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* @return bool
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*/
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public static function restore($file, $filename, $timestamp) {
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$user = \OCP\User::getUser();
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$view = new \OC\Files\View('/' . $user);
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$trashbinSize = self::getTrashbinSize($user);
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if ($trashbinSize === false || $trashbinSize < 0) {
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$trashbinSize = self::calculateSize(new \OC\Files\View('/' . $user . '/files_trashbin'));
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}
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if ($timestamp) {
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$query = \OC_DB::prepare('SELECT `location`,`type` FROM `*PREFIX*files_trash`'
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. ' WHERE `user`=? AND `id`=? AND `timestamp`=?');
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$result = $query->execute(array($user, $filename, $timestamp))->fetchAll();
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if (count($result) != 1) {
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\OC_Log::write('files_trashbin', 'trash bin database inconsistent!', \OC_Log::ERROR);
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return false;
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}
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// if location no longer exists, restore file in the root directory
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$location = $result[0]['location'];
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if ($result[0]['location'] != '/' &&
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(!$view->is_dir('files' . $result[0]['location']) ||
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!$view->isUpdatable('files' . $result[0]['location']))) {
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$location = '';
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}
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} else {
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$path_parts = pathinfo($file);
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$result[] = array(
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'location' => $path_parts['dirname'],
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'type' => $view->is_dir('/files_trashbin/files/' . $file) ? 'dir' : 'files',
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);
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$location = '';
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}
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$source = \OC\Files\Filesystem::normalizePath('files_trashbin/files/' . $file);
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$target = \OC\Files\Filesystem::normalizePath('files/' . $location . '/' . $filename);
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// we need a extension in case a file/dir with the same name already exists
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$ext = self::getUniqueExtension($location, $filename, $view);
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$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 . $ext);
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// handle the restore result
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if ($restoreResult) {
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$fakeRoot = $view->getRoot();
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$view->chroot('/' . $user . '/files');
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$view->touch('/' . $location . '/' . $filename . $ext, $mtime);
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$view->chroot($fakeRoot);
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\OCP\Util::emitHook('\OCA\Files_Trashbin\Trashbin', 'post_restore', array('filePath' => \OC\Files\Filesystem::normalizePath('/' . $location . '/' . $filename . $ext),
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'trashPath' => \OC\Files\Filesystem::normalizePath($file)));
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if ($view->is_dir($target . $ext)) {
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$trashbinSize -= self::calculateSize(new \OC\Files\View('/' . $user . '/' . $target . $ext));
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} else {
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$trashbinSize -= $view->filesize($target . $ext);
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}
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$trashbinSize -= self::restoreVersions($view, $file, $filename, $ext, $location, $timestamp);
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$trashbinSize -= self::restoreEncryptionKeys($view, $file, $filename, $ext, $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, $timestamp));
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}
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self::setTrashbinSize($user, $trashbinSize);
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// enable proxy
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\OC_FileProxy::$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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* @brief 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 $file complete path to file
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* @param $filename name of file
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* @param $ext file extension in case a file with the same $filename already exists
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* @param $location location if file
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* @param $timestamp deleteion time
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*
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* @return size of restored versions
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*/
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private static function restoreVersions($view, $file, $filename, $ext, $location, $timestamp) {
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$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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$rootView = new \OC\Files\View('/');
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$target = \OC\Files\Filesystem::normalizePath('/' . $location . '/' . $filename . $ext);
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list($owner, $ownerPath) = self::getUidAndFilename($target);
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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/' . $file)) {
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$size += self::calculateSize(new \OC\Files\View('/' . $user . '/' . '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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$size += $view->filesize('files_trashbin/versions/' . $versionedFile . '.v' . $v . '.d' . $timestamp);
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$rootView->rename($user . '/files_trashbin/versions/' . $versionedFile . '.v' . $v . '.d' . $timestamp, $owner . '/files_versions/' . $ownerPath . '.v' . $v);
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} else {
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$size += $view->filesize('files_trashbin/versions/' . $versionedFile . '.v' . $v);
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$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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return $size;
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}
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/**
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* @brief restore encryption keys from trash bin
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*
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* @param \OC\Files\View $view
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* @param $file complete path to file
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* @param $filename name of file
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* @param $ext file extension in case a file with the same $filename already exists
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* @param $location location of file
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* @param $timestamp deleteion time
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*
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* @return size of restored encrypted file
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*/
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private static function restoreEncryptionKeys($view, $file, $filename, $ext, $location, $timestamp) {
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// Take care of encryption keys TODO! Get '.key' in file between file name and delete date (also for permanent delete!)
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$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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$target = \OC\Files\Filesystem::normalizePath('/' . $location . '/' . $filename . $ext);
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list($owner, $ownerPath) = self::getUidAndFilename($target);
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$util = new \OCA\Encryption\Util(new \OC_FilesystemView('/'), $user);
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if ($util->isSystemWideMountPoint($ownerPath)) {
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$baseDir = '/files_encryption/';
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} else {
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$baseDir = $owner . '/files_encryption/';
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}
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$path_parts = pathinfo($file);
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$source_location = $path_parts['dirname'];
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if ($view->is_dir('/files_trashbin/keyfiles/' . $file)) {
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if ($source_location != '.') {
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$keyfile = \OC\Files\Filesystem::normalizePath($user . '/files_trashbin/keyfiles/' . $source_location . '/' . $filename);
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$sharekey = \OC\Files\Filesystem::normalizePath($user . '/files_trashbin/share-keys/' . $source_location . '/' . $filename);
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} else {
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$keyfile = \OC\Files\Filesystem::normalizePath($user . '/files_trashbin/keyfiles/' . $filename);
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$sharekey = \OC\Files\Filesystem::normalizePath($user . '/files_trashbin/share-keys/' . $filename);
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}
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} else {
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$keyfile = \OC\Files\Filesystem::normalizePath($user . '/files_trashbin/keyfiles/' . $source_location . '/' . $filename . '.key');
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}
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if ($timestamp) {
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$keyfile .= '.d' . $timestamp;
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}
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// disable proxy to prevent recursive calls
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$proxyStatus = \OC_FileProxy::$enabled;
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\OC_FileProxy::$enabled = false;
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if ($rootView->file_exists($keyfile)) {
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// handle directory
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if ($rootView->is_dir($keyfile)) {
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// handle keyfiles
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|
$size += self::calculateSize(new \OC\Files\View($keyfile));
|
|
$rootView->rename($keyfile, $baseDir . '/keyfiles/' . $ownerPath);
|
|
|
|
// handle share-keys
|
|
if ($timestamp) {
|
|
$sharekey .= '.d' . $timestamp;
|
|
}
|
|
$size += self::calculateSize(new \OC\Files\View($sharekey));
|
|
$rootView->rename($sharekey, $baseDir . '/share-keys/' . $ownerPath);
|
|
} else {
|
|
// handle keyfiles
|
|
$size += $rootView->filesize($keyfile);
|
|
$rootView->rename($keyfile, $baseDir . '/keyfiles/' . $ownerPath . '.key');
|
|
|
|
// handle share-keys
|
|
$ownerShareKey = \OC\Files\Filesystem::normalizePath($user . '/files_trashbin/share-keys/' . $source_location . '/' . $filename . '.' . $user . '.shareKey');
|
|
if ($timestamp) {
|
|
$ownerShareKey .= '.d' . $timestamp;
|
|
}
|
|
|
|
$size += $rootView->filesize($ownerShareKey);
|
|
|
|
// move only owners key
|
|
$rootView->rename($ownerShareKey, $baseDir . '/share-keys/' . $ownerPath . '.' . $user . '.shareKey');
|
|
|
|
// try to re-share if file is shared
|
|
$filesystemView = new \OC_FilesystemView('/');
|
|
$session = new \OCA\Encryption\Session($filesystemView);
|
|
$util = new \OCA\Encryption\Util($filesystemView, $user);
|
|
|
|
// fix the file size
|
|
$absolutePath = \OC\Files\Filesystem::normalizePath('/' . $owner . '/files/' . $ownerPath);
|
|
$util->fixFileSize($absolutePath);
|
|
|
|
// get current sharing state
|
|
$sharingEnabled = \OCP\Share::isEnabled();
|
|
|
|
// get the final filename
|
|
$target = \OC\Files\Filesystem::normalizePath($location . '/' . $filename);
|
|
|
|
// get users sharing this file
|
|
$usersSharing = $util->getSharingUsersArray($sharingEnabled, $target . $ext, $user);
|
|
|
|
// Attempt to set shareKey
|
|
$util->setSharedFileKeyfiles($session, $usersSharing, $target . $ext);
|
|
}
|
|
}
|
|
|
|
// enable proxy
|
|
\OC_FileProxy::$enabled = $proxyStatus;
|
|
}
|
|
return $size;
|
|
}
|
|
|
|
/**
|
|
* @brief delete file from trash bin permanently
|
|
*
|
|
* @param $filename path to the file
|
|
* @param $timestamp of deletion time
|
|
*
|
|
* @return size of deleted files
|
|
*/
|
|
public static function delete($filename, $timestamp = null) {
|
|
$user = \OCP\User::getUser();
|
|
$view = new \OC\Files\View('/' . $user);
|
|
$size = 0;
|
|
|
|
$trashbinSize = self::getTrashbinSize($user);
|
|
if ($trashbinSize === false || $trashbinSize < 0) {
|
|
$trashbinSize = self::calculateSize(new \OC\Files\View('/' . $user . '/files_trashbin'));
|
|
}
|
|
|
|
if ($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);
|
|
}
|
|
$view->unlink('/files_trashbin/files/' . $file);
|
|
$trashbinSize -= $size;
|
|
self::setTrashbinSize($user, $trashbinSize);
|
|
|
|
return $size;
|
|
}
|
|
|
|
private static function deleteVersions($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 $size;
|
|
}
|
|
|
|
private static function deleteEncryptionKeys($view, $file, $filename, $timestamp) {
|
|
$size = 0;
|
|
if (\OCP\App::isEnabled('files_encryption')) {
|
|
$user = \OCP\User::getUser();
|
|
|
|
if ($view->is_dir('/files_trashbin/files/' . $file)) {
|
|
$keyfile = \OC\Files\Filesystem::normalizePath('files_trashbin/keyfiles/' . $filename);
|
|
$sharekeys = \OC\Files\Filesystem::normalizePath('files_trashbin/share-keys/' . $filename);
|
|
} else {
|
|
$keyfile = \OC\Files\Filesystem::normalizePath('files_trashbin/keyfiles/' . $filename . '.key');
|
|
$sharekeys = \OC\Files\Filesystem::normalizePath('files_trashbin/share-keys/' . $filename . '.' . $user . '.shareKey');
|
|
}
|
|
if ($timestamp) {
|
|
$keyfile .= '.d' . $timestamp;
|
|
$sharekeys .= '.d' . $timestamp;
|
|
}
|
|
if ($view->file_exists($keyfile)) {
|
|
if ($view->is_dir($keyfile)) {
|
|
$size += self::calculateSize(new \OC\Files\View('/' . $user . '/' . $keyfile));
|
|
$size += self::calculateSize(new \OC\Files\View('/' . $user . '/' . $sharekeys));
|
|
} else {
|
|
$size += $view->filesize($keyfile);
|
|
$size += $view->filesize($sharekeys);
|
|
}
|
|
$view->unlink($keyfile);
|
|
$view->unlink($sharekeys);
|
|
}
|
|
}
|
|
return $size;
|
|
}
|
|
|
|
/**
|
|
* check to see whether a file exists in trashbin
|
|
* @param $filename path to the file
|
|
* @param $timestamp of deletion time
|
|
* @return true if file exists, otherwise false
|
|
*/
|
|
public static function file_exists($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);
|
|
}
|
|
|
|
/**
|
|
* @brief deletes used space for trash bin in db if user was deleted
|
|
*
|
|
* @param type $uid id of deleted user
|
|
* @return result of db delete operation
|
|
*/
|
|
public static function deleteUser($uid) {
|
|
$query = \OC_DB::prepare('DELETE FROM `*PREFIX*files_trash` WHERE `user`=?');
|
|
$result = $query->execute(array($uid));
|
|
if ($result) {
|
|
$query = \OC_DB::prepare('DELETE FROM `*PREFIX*files_trashsize` WHERE `user`=?');
|
|
return $query->execute(array($uid));
|
|
}
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* calculate remaining free space for trash bin
|
|
*
|
|
* @param $trashbinSize current size of the trash bin
|
|
* @return available free space for trash bin
|
|
*/
|
|
private static function calculateFreeSpace($trashbinSize) {
|
|
$softQuota = true;
|
|
$user = \OCP\User::getUser();
|
|
$quota = \OC_Preferences::getValue($user, 'files', 'quota');
|
|
$view = new \OC\Files\View('/' . $user);
|
|
if ($quota === null || $quota === 'default') {
|
|
$quota = \OC_Appconfig::getValue('files', 'default_quota');
|
|
}
|
|
if ($quota === null || $quota === 'none') {
|
|
$quota = \OC\Files\Filesystem::free_space('/');
|
|
$softQuota = false;
|
|
} 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/');
|
|
$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 $availableSpace;
|
|
}
|
|
|
|
/**
|
|
* clean up the trash bin
|
|
* @param current size of the trash bin
|
|
*/
|
|
private static function expire($trashbinSize) {
|
|
|
|
$user = \OCP\User::getUser();
|
|
$view = new \OC\Files\View('/' . $user);
|
|
$availableSpace = self::calculateFreeSpace($trashbinSize);
|
|
$size = 0;
|
|
|
|
$query = \OC_DB::prepare('SELECT `location`,`type`,`id`,`timestamp` FROM `*PREFIX*files_trash` WHERE `user`=?');
|
|
$result = $query->execute(array($user))->fetchAll();
|
|
|
|
$retention_obligation = \OC_Config::getValue('trashbin_retention_obligation', self::DEFAULT_RETENTION_OBLIGATION);
|
|
|
|
$limit = time() - ($retention_obligation * 86400);
|
|
|
|
foreach ($result as $r) {
|
|
$timestamp = $r['timestamp'];
|
|
$filename = $r['id'];
|
|
if ($r['timestamp'] < $limit) {
|
|
$size += self::delete($filename, $timestamp);
|
|
\OC_Log::write('files_trashbin', 'remove "' . $filename . '" fom trash bin because it is older than ' . $retention_obligation, \OC_log::INFO);
|
|
}
|
|
}
|
|
$availableSpace = $availableSpace + $size;
|
|
// if size limit for trash bin reached, delete oldest files in trash bin
|
|
if ($availableSpace < 0) {
|
|
$query = \OC_DB::prepare('SELECT `location`,`type`,`id`,`timestamp` FROM `*PREFIX*files_trash`'
|
|
. ' WHERE `user`=? ORDER BY `timestamp` ASC');
|
|
$result = $query->execute(array($user))->fetchAll();
|
|
$length = count($result);
|
|
$i = 0;
|
|
while ($i < $length && $availableSpace < 0) {
|
|
$tmp = self::delete($result[$i]['id'], $result[$i]['timestamp']);
|
|
\OC_Log::write('files_trashbin', 'remove "' . $result[$i]['id'] . '" (' . $tmp . 'B) to meet the limit of trash bin size (50% of available quota)', \OC_log::INFO);
|
|
$availableSpace += $tmp;
|
|
$size += $tmp;
|
|
$i++;
|
|
}
|
|
}
|
|
|
|
return $size;
|
|
}
|
|
|
|
/**
|
|
* recursive copy to copy a whole directory
|
|
*
|
|
* @param $source source path, relative to the users files directory
|
|
* @param $destination destination path relative to the users root directoy
|
|
* @param $view file view for the users root directory
|
|
*/
|
|
private static function copy_recursive($source, $destination, $view) {
|
|
$size = 0;
|
|
if ($view->is_dir('files' . $source)) {
|
|
$view->mkdir($destination);
|
|
$view->touch($destination, $view->filemtime('files' . $source));
|
|
foreach (\OC_Files::getDirectoryContent($source) as $i) {
|
|
$pathDir = $source . '/' . $i['name'];
|
|
if ($view->is_dir('files' . $pathDir)) {
|
|
$size += self::copy_recursive($pathDir, $destination . '/' . $i['name'], $view);
|
|
} else {
|
|
$size += $view->filesize('files' . $pathDir);
|
|
$view->copy('files' . $pathDir, $destination . '/' . $i['name']);
|
|
$view->touch($destination . '/' . $i['name'], $view->filemtime('files' . $pathDir));
|
|
}
|
|
}
|
|
} else {
|
|
$size += $view->filesize('files' . $source);
|
|
$view->copy('files' . $source, $destination);
|
|
$view->touch($destination, $view->filemtime('files' . $source));
|
|
}
|
|
return $size;
|
|
}
|
|
|
|
/**
|
|
* find all versions which belong to the file we want to restore
|
|
* @param $filename name of the file which should be restored
|
|
* @param $timestamp timestamp when the file was deleted
|
|
*/
|
|
private static function getVersionsFromTrash($filename, $timestamp) {
|
|
$view = new \OC\Files\View('/' . \OCP\User::getUser() . '/files_trashbin/versions');
|
|
$versionsName = $view->getLocalFile($filename) . '.v';
|
|
$escapedVersionsName = preg_replace('/(\*|\?|\[)/', '[$1]', $versionsName);
|
|
$versions = array();
|
|
if ($timestamp) {
|
|
// fetch for old versions
|
|
$matches = glob($escapedVersionsName . '*.d' . $timestamp);
|
|
$offset = -strlen($timestamp) - 2;
|
|
} else {
|
|
$matches = glob($escapedVersionsName . '*');
|
|
}
|
|
|
|
foreach ($matches as $ma) {
|
|
if ($timestamp) {
|
|
$parts = explode('.v', substr($ma, 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 $location where the file should be restored
|
|
* @param $filename name of the file
|
|
* @param $view filesystem view relative to users root directory
|
|
* @return string with unique extension
|
|
*/
|
|
private static function getUniqueExtension($location, $filename, $view) {
|
|
$ext = '';
|
|
if ($view->file_exists('files' . $location . '/' . $filename)) {
|
|
$tmpext = '.restored';
|
|
$ext = $tmpext;
|
|
$i = 1;
|
|
while ($view->file_exists('files' . $location . '/' . $filename . $ext)) {
|
|
$ext = $tmpext . $i;
|
|
$i++;
|
|
}
|
|
}
|
|
return $ext;
|
|
}
|
|
|
|
/**
|
|
* @brief get the size from a given root folder
|
|
* @param $view file view on the root folder
|
|
* @return size of the folder
|
|
*/
|
|
private static function calculateSize($view) {
|
|
$root = \OCP\Config::getSystemValue('datadirectory') . $view->getAbsolutePath('');
|
|
if (!file_exists($root)) {
|
|
return 0;
|
|
}
|
|
$iterator = new \RecursiveIteratorIterator(new \RecursiveDirectoryIterator($root), \RecursiveIteratorIterator::CHILD_FIRST);
|
|
$size = 0;
|
|
|
|
foreach ($iterator as $path) {
|
|
$relpath = substr($path, strlen($root) - 1);
|
|
if (!$view->is_dir($relpath)) {
|
|
$size += $view->filesize($relpath);
|
|
}
|
|
}
|
|
return $size;
|
|
}
|
|
|
|
/**
|
|
* get current size of trash bin from a given user
|
|
*
|
|
* @param $user user who owns the trash bin
|
|
* @return mixed trash bin size or false if no trash bin size is stored
|
|
*/
|
|
private static function getTrashbinSize($user) {
|
|
$query = \OC_DB::prepare('SELECT `size` FROM `*PREFIX*files_trashsize` WHERE `user`=?');
|
|
$result = $query->execute(array($user))->fetchAll();
|
|
|
|
if ($result) {
|
|
return $result[0]['size'];
|
|
}
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* write to the database how much space is in use for the trash bin
|
|
*
|
|
* @param $user owner of the trash bin
|
|
* @param $size size of the trash bin
|
|
*/
|
|
private static function setTrashbinSize($user, $size) {
|
|
if (self::getTrashbinSize($user) === false) {
|
|
$query = \OC_DB::prepare('INSERT INTO `*PREFIX*files_trashsize` (`size`, `user`) VALUES (?, ?)');
|
|
} else {
|
|
$query = \OC_DB::prepare('UPDATE `*PREFIX*files_trashsize` SET `size`=? WHERE `user`=?');
|
|
}
|
|
$query->execute(array($size, $user));
|
|
}
|
|
|
|
/**
|
|
* register hooks
|
|
*/
|
|
public static function registerHooks() {
|
|
//Listen to delete file signal
|
|
\OCP\Util::connectHook('OC_Filesystem', 'delete', "OCA\Files_Trashbin\Hooks", "remove_hook");
|
|
//Listen to delete user signal
|
|
\OCP\Util::connectHook('OC_User', 'pre_deleteUser', "OCA\Files_Trashbin\Hooks", "deleteUser_hook");
|
|
}
|
|
|
|
}
|