* @author Joas Schilling * @author Morris Jobke * @author Robin Appelman * @author Roeland Jago Douma * * @copyright Copyright (c) 2015, 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 * */ namespace OCA\Files_Sharing; use OC\Files\Mount\MountPoint; use OC\Files\Mount\MoveableMount; use OC\Files\View; /** * Shared mount points can be moved by the user */ class SharedMount extends MountPoint implements MoveableMount { /** * @var \OC\Files\Storage\Shared $storage */ protected $storage = null; /** * @var \OC\Files\View */ private $recipientView; /** * @var string */ private $user; /** * @param string $storage * @param string $mountpoint * @param array|null $arguments * @param \OCP\Files\Storage\IStorageFactory $loader */ public function __construct($storage, $mountpoint, $arguments = null, $loader = null) { $this->user = $arguments['user']; $this->recipientView = new View('/' . $this->user . '/files'); $newMountPoint = $this->verifyMountPoint($arguments['share']); $absMountPoint = '/' . $this->user . '/files' . $newMountPoint; $arguments['ownerView'] = new View('/' . $arguments['share']['uid_owner'] . '/files'); parent::__construct($storage, $absMountPoint, $arguments, $loader); } /** * check if the parent folder exists otherwise move the mount point up * * @param array $share * @return string */ private function verifyMountPoint(&$share) { $mountPoint = basename($share['file_target']); $parent = dirname($share['file_target']); if (!$this->recipientView->is_dir($parent)) { $parent = Helper::getShareFolder(); } $newMountPoint = \OCA\Files_Sharing\Helper::generateUniqueTarget( \OC\Files\Filesystem::normalizePath($parent . '/' . $mountPoint), [], $this->recipientView ); if ($newMountPoint !== $share['file_target']) { $this->updateFileTarget($newMountPoint, $share); $share['file_target'] = $newMountPoint; $share['unique_name'] = true; } return $newMountPoint; } /** * update fileTarget in the database if the mount point changed * * @param string $newPath * @param array $share reference to the share which should be modified * @return bool */ private function updateFileTarget($newPath, &$share) { // if the user renames a mount point from a group share we need to create a new db entry // for the unique name if ($share['share_type'] === \OCP\Share::SHARE_TYPE_GROUP && empty($share['unique_name'])) { $query = \OCP\DB::prepare('INSERT INTO `*PREFIX*share` (`item_type`, `item_source`, `item_target`,' .' `share_type`, `share_with`, `uid_owner`, `permissions`, `stime`, `file_source`,' .' `file_target`, `token`, `parent`) VALUES (?,?,?,?,?,?,?,?,?,?,?,?)'); $arguments = array($share['item_type'], $share['item_source'], $share['item_target'], 2, $this->user, $share['uid_owner'], $share['permissions'], $share['stime'], $share['file_source'], $newPath, $share['token'], $share['id']); } else { // rename mount point $query = \OCP\DB::prepare( 'Update `*PREFIX*share` SET `file_target` = ? WHERE `id` = ?' ); $arguments = array($newPath, $share['id']); } $result = $query->execute($arguments); return $result === 1 ? true : false; } /** * Format a path to be relative to the /user/files/ directory * * @param string $path the absolute path * @return string e.g. turns '/admin/files/test.txt' into '/test.txt' * @throws \OCA\Files_Sharing\Exceptions\BrokenPath */ protected function stripUserFilesPath($path) { $trimmed = ltrim($path, '/'); $split = explode('/', $trimmed); // it is not a file relative to data/user/files if (count($split) < 3 || $split[1] !== 'files') { \OCP\Util::writeLog('file sharing', 'Can not strip userid and "files/" from path: ' . $path, \OCP\Util::ERROR); throw new \OCA\Files_Sharing\Exceptions\BrokenPath('Path does not start with /user/files', 10); } // skip 'user' and 'files' $sliced = array_slice($split, 2); $relPath = implode('/', $sliced); return '/' . $relPath; } /** * Move the mount point to $target * * @param string $target the target mount point * @return bool */ public function moveMount($target) { $relTargetPath = $this->stripUserFilesPath($target); $share = $this->storage->getShare(); $result = true; if (!empty($share['grouped'])) { foreach ($share['grouped'] as $s) { $result = $this->updateFileTarget($relTargetPath, $s) && $result; } } else { $result = $this->updateFileTarget($relTargetPath, $share) && $result; } if ($result) { $this->setMountPoint($target); $this->storage->setUniqueName(); $this->storage->setMountPoint($relTargetPath); } else { \OCP\Util::writeLog('file sharing', 'Could not rename mount point for shared folder "' . $this->getMountPoint() . '" to "' . $target . '"', \OCP\Util::ERROR); } return $result; } /** * Remove the mount points * * @return bool */ public function removeMount() { $mountManager = \OC\Files\Filesystem::getMountManager(); /** @var $storage \OC\Files\Storage\Shared */ $storage = $this->getStorage(); $result = $storage->unshareStorage(); $mountManager->removeMount($this->mountPoint); return $result; } /** * @return array */ public function getShare() { /** @var $storage \OC\Files\Storage\Shared */ $storage = $this->getStorage(); return $storage->getShare(); } }