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227 lines
6.0 KiB
PHP
227 lines
6.0 KiB
PHP
<?php
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/**
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* @author Björn Schießle <bjoern@schiessle.org>
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* @author Joas Schilling <nickvergessen@owncloud.com>
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* @author Morris Jobke <hey@morrisjobke.de>
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* @author Robin Appelman <icewind@owncloud.com>
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* @author Roeland Jago Douma <rullzer@owncloud.com>
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*
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* @copyright Copyright (c) 2016, ownCloud, Inc.
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* @license AGPL-3.0
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*
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* This code is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License, version 3,
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* as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License, version 3,
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* along with this program. If not, see <http://www.gnu.org/licenses/>
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*
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*/
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namespace OCA\Files_Sharing;
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use OC\Files\Filesystem;
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use OC\Files\Mount\MountPoint;
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use OC\Files\Mount\MoveableMount;
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use OC\Files\View;
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/**
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* Shared mount points can be moved by the user
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*/
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class SharedMount extends MountPoint implements MoveableMount {
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/**
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* @var \OC\Files\Storage\Shared $storage
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*/
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protected $storage = null;
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/**
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* @var \OC\Files\View
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*/
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private $recipientView;
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/**
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* @var string
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*/
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private $user;
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/** @var \OCP\Share\IShare */
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private $share;
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/**
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* @param string $storage
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* @param SharedMount[] $mountpoints
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* @param array|null $arguments
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* @param \OCP\Files\Storage\IStorageFactory $loader
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*/
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public function __construct($storage, array $mountpoints, $arguments = null, $loader = null) {
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$this->user = $arguments['user'];
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$this->recipientView = new View('/' . $this->user . '/files');
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$this->share = $arguments['newShare'];
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$newMountPoint = $this->verifyMountPoint($this->share, $mountpoints);
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$absMountPoint = '/' . $this->user . '/files' . $newMountPoint;
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$arguments['ownerView'] = new View('/' . $this->share->getShareOwner() . '/files');
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parent::__construct($storage, $absMountPoint, $arguments, $loader);
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}
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/**
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* check if the parent folder exists otherwise move the mount point up
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*
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* @param \OCP\Share\IShare $share
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* @param SharedMount[] $mountpoints
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* @return string
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*/
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private function verifyMountPoint(\OCP\Share\IShare $share, array $mountpoints) {
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$mountPoint = basename($share->getTarget());
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$parent = dirname($share->getTarget());
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if (!$this->recipientView->is_dir($parent)) {
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$parent = Helper::getShareFolder($this->recipientView);
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}
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$newMountPoint = $this->generateUniqueTarget(
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\OC\Files\Filesystem::normalizePath($parent . '/' . $mountPoint),
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$this->recipientView,
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$mountpoints
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);
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if ($newMountPoint !== $share->getTarget()) {
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$this->updateFileTarget($newMountPoint, $share);
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}
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return $newMountPoint;
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}
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/**
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* update fileTarget in the database if the mount point changed
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*
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* @param string $newPath
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* @param \OCP\Share\IShare $share
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* @return bool
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*/
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private function updateFileTarget($newPath, &$share) {
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$share->setTarget($newPath);
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\OC::$server->getShareManager()->moveShare($share, $this->user);
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}
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/**
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* @param string $path
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* @param View $view
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* @param SharedMount[] $mountpoints
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* @return mixed
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*/
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private function generateUniqueTarget($path, $view, array $mountpoints) {
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$pathinfo = pathinfo($path);
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$ext = (isset($pathinfo['extension'])) ? '.'.$pathinfo['extension'] : '';
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$name = $pathinfo['filename'];
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$dir = $pathinfo['dirname'];
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// Helper function to find existing mount points
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$mountpointExists = function($path) use ($mountpoints) {
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foreach ($mountpoints as $mountpoint) {
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if ($mountpoint->getShare()->getTarget() === $path) {
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return true;
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}
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}
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return false;
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};
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$i = 2;
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while ($view->file_exists($path) || $mountpointExists($path)) {
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$path = Filesystem::normalizePath($dir . '/' . $name . ' ('.$i.')' . $ext);
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$i++;
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}
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return $path;
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}
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/**
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* Format a path to be relative to the /user/files/ directory
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*
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* @param string $path the absolute path
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* @return string e.g. turns '/admin/files/test.txt' into '/test.txt'
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* @throws \OCA\Files_Sharing\Exceptions\BrokenPath
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*/
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protected function stripUserFilesPath($path) {
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$trimmed = ltrim($path, '/');
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$split = explode('/', $trimmed);
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// it is not a file relative to data/user/files
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if (count($split) < 3 || $split[1] !== 'files') {
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\OCP\Util::writeLog('file sharing',
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'Can not strip userid and "files/" from path: ' . $path,
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\OCP\Util::ERROR);
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throw new \OCA\Files_Sharing\Exceptions\BrokenPath('Path does not start with /user/files', 10);
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}
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// skip 'user' and 'files'
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$sliced = array_slice($split, 2);
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$relPath = implode('/', $sliced);
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return '/' . $relPath;
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}
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/**
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* Move the mount point to $target
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*
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* @param string $target the target mount point
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* @return bool
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*/
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public function moveMount($target) {
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$relTargetPath = $this->stripUserFilesPath($target);
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$share = $this->storage->getShare();
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$result = true;
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try {
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$this->updateFileTarget($relTargetPath, $share);
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$this->setMountPoint($target);
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$this->storage->setMountPoint($relTargetPath);
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} catch (\Exception $e) {
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\OCP\Util::writeLog('file sharing',
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'Could not rename mount point for shared folder "' . $this->getMountPoint() . '" to "' . $target . '"',
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\OCP\Util::ERROR);
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}
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return $result;
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}
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/**
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* Remove the mount points
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*
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* @return bool
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*/
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public function removeMount() {
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$mountManager = \OC\Files\Filesystem::getMountManager();
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/** @var $storage \OC\Files\Storage\Shared */
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$storage = $this->getStorage();
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$result = $storage->unshareStorage();
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$mountManager->removeMount($this->mountPoint);
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return $result;
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}
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/**
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* @return \OCP\Share\IShare
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*/
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public function getShare() {
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return $this->share;
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}
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/**
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* Get the file id of the root of the storage
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*
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* @return int
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*/
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public function getStorageRootId() {
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return $this->share->getNodeId();
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}
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}
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