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- <?php
- /**
- * @author Björn Schießle <schiessle@owncloud.com>
- * @author Morris Jobke <hey@morrisjobke.de>
- * @author Robin Appelman <icewind@owncloud.com>
- * @author Vincent Petry <pvince81@owncloud.com>
- *
- * @copyright Copyright (c) 2016, ownCloud, Inc.
- * @license AGPL-3.0
- *
- * This code is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License, version 3,
- * as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License, version 3,
- * along with this program. If not, see <http://www.gnu.org/licenses/>
- *
- */
- namespace OCA\Files_Trashbin;
- use OC\Files\Filesystem;
- use OC\Files\Storage\Wrapper\Wrapper;
- use OC\Files\View;
- use OCP\IUserManager;
- class Storage extends Wrapper {
- private $mountPoint;
- // remember already deleted files to avoid infinite loops if the trash bin
- // move files across storages
- private $deletedFiles = array();
- /**
- * Disable trash logic
- *
- * @var bool
- */
- private static $disableTrash = false;
- /** @var IUserManager */
- private $userManager;
- function __construct($parameters, IUserManager $userManager = null) {
- $this->mountPoint = $parameters['mountPoint'];
- $this->userManager = $userManager;
- parent::__construct($parameters);
- }
- /**
- * @internal
- */
- public static function preRenameHook($params) {
- // in cross-storage cases, a rename is a copy + unlink,
- // that last unlink must not go to trash
- self::$disableTrash = true;
- }
- /**
- * @internal
- */
- public static function postRenameHook($params) {
- self::$disableTrash = false;
- }
- /**
- * Rename path1 to path2 by calling the wrapped storage.
- *
- * @param string $path1 first path
- * @param string $path2 second path
- */
- public function rename($path1, $path2) {
- $result = $this->storage->rename($path1, $path2);
- if ($result === false) {
- // when rename failed, the post_rename hook isn't triggered,
- // but we still want to reenable the trash logic
- self::$disableTrash = false;
- }
- return $result;
- }
- /**
- * Deletes the given file by moving it into the trashbin.
- *
- * @param string $path path of file or folder to delete
- *
- * @return bool true if the operation succeeded, false otherwise
- */
- public function unlink($path) {
- return $this->doDelete($path, 'unlink');
- }
- /**
- * Deletes the given folder by moving it into the trashbin.
- *
- * @param string $path path of folder to delete
- *
- * @return bool true if the operation succeeded, false otherwise
- */
- public function rmdir($path) {
- return $this->doDelete($path, 'rmdir');
- }
- /**
- * check if it is a file located in data/user/files only files in the
- * 'files' directory should be moved to the trash
- *
- * @param $path
- * @return bool
- */
- protected function shouldMoveToTrash($path){
- $normalized = Filesystem::normalizePath($this->mountPoint . '/' . $path);
- $parts = explode('/', $normalized);
- if (count($parts) < 4) {
- return false;
- }
- if ($this->userManager->userExists($parts[1]) && $parts[2] == 'files') {
- return true;
- }
- return false;
- }
- /**
- * Run the delete operation with the given method
- *
- * @param string $path path of file or folder to delete
- * @param string $method either "unlink" or "rmdir"
- *
- * @return bool true if the operation succeeded, false otherwise
- */
- private function doDelete($path, $method) {
- if (self::$disableTrash
- || !\OC_App::isEnabled('files_trashbin')
- || (pathinfo($path, PATHINFO_EXTENSION) === 'part')
- || $this->shouldMoveToTrash($path) === false
- ) {
- return call_user_func_array([$this->storage, $method], [$path]);
- }
- // check permissions before we continue, this is especially important for
- // shared files
- if (!$this->isDeletable($path)) {
- return false;
- }
- $normalized = Filesystem::normalizePath($this->mountPoint . '/' . $path);
- $result = true;
- $view = Filesystem::getView();
- if (!isset($this->deletedFiles[$normalized]) && $view instanceof View) {
- $this->deletedFiles[$normalized] = $normalized;
- if ($filesPath = $view->getRelativePath($normalized)) {
- $filesPath = trim($filesPath, '/');
- $result = \OCA\Files_Trashbin\Trashbin::move2trash($filesPath);
- // in cross-storage cases the file will be copied
- // but not deleted, so we delete it here
- if ($result) {
- call_user_func_array([$this->storage, $method], [$path]);
- }
- } else {
- $result = call_user_func_array([$this->storage, $method], [$path]);
- }
- unset($this->deletedFiles[$normalized]);
- } else if ($this->storage->file_exists($path)) {
- $result = call_user_func_array([$this->storage, $method], [$path]);
- }
- return $result;
- }
- /**
- * Setup the storate wrapper callback
- */
- public static function setupStorage() {
- \OC\Files\Filesystem::addStorageWrapper('oc_trashbin', function ($mountPoint, $storage) {
- return new \OCA\Files_Trashbin\Storage(
- array('storage' => $storage, 'mountPoint' => $mountPoint),
- \OC::$server->getUserManager()
- );
- }, 1);
- }
- }
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