581 lines
18 KiB
PHP
581 lines
18 KiB
PHP
<?php
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/**
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* @copyright Copyright (c) 2016, ownCloud, Inc.
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*
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* @author Arthur Schiwon <blizzz@arthur-schiwon.de>
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* @author Björn Schießle <bjoern@schiessle.org>
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* @author Joas Schilling <coding@schilljs.com>
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* @author Lukas Reschke <lukas@statuscode.ch>
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* @author Morris Jobke <hey@morrisjobke.de>
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*
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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\FederatedFileSharing;
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use OCA\Files_Sharing\Activity;
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use OCP\AppFramework\Http;
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use OCP\Constants;
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use OCP\Files\NotFoundException;
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use OCP\IDBConnection;
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use OCP\IRequest;
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use OCP\IUserManager;
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use OCP\Share;
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/**
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* Class RequestHandler
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*
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* handles OCS Request to the federated share API
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*
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* @package OCA\FederatedFileSharing\API
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*/
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class RequestHandler {
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/** @var FederatedShareProvider */
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private $federatedShareProvider;
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/** @var IDBConnection */
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private $connection;
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/** @var Share\IManager */
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private $shareManager;
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/** @var IRequest */
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private $request;
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/** @var Notifications */
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private $notifications;
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/** @var AddressHandler */
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private $addressHandler;
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/** @var IUserManager */
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private $userManager;
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/** @var string */
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private $shareTable = 'share';
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/**
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* Server2Server constructor.
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*
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* @param FederatedShareProvider $federatedShareProvider
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* @param IDBConnection $connection
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* @param Share\IManager $shareManager
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* @param IRequest $request
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* @param Notifications $notifications
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* @param AddressHandler $addressHandler
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* @param IUserManager $userManager
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*/
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public function __construct(FederatedShareProvider $federatedShareProvider,
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IDBConnection $connection,
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Share\IManager $shareManager,
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IRequest $request,
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Notifications $notifications,
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AddressHandler $addressHandler,
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IUserManager $userManager
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) {
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$this->federatedShareProvider = $federatedShareProvider;
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$this->connection = $connection;
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$this->shareManager = $shareManager;
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$this->request = $request;
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$this->notifications = $notifications;
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$this->addressHandler = $addressHandler;
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$this->userManager = $userManager;
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}
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/**
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* create a new share
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*
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* @param array $params
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* @return \OC_OCS_Result
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*/
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public function createShare($params) {
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if (!$this->isS2SEnabled(true)) {
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return new \OC_OCS_Result(null, 503, 'Server does not support federated cloud sharing');
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}
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$remote = isset($_POST['remote']) ? $_POST['remote'] : null;
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$token = isset($_POST['token']) ? $_POST['token'] : null;
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$name = isset($_POST['name']) ? $_POST['name'] : null;
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$owner = isset($_POST['owner']) ? $_POST['owner'] : null;
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$sharedBy = isset($_POST['sharedBy']) ? $_POST['sharedBy'] : null;
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$shareWith = isset($_POST['shareWith']) ? $_POST['shareWith'] : null;
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$remoteId = isset($_POST['remoteId']) ? (int)$_POST['remoteId'] : null;
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$sharedByFederatedId = isset($_POST['sharedByFederatedId']) ? $_POST['sharedByFederatedId'] : null;
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$ownerFederatedId = isset($_POST['ownerFederatedId']) ? $_POST['ownerFederatedId'] : null;
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if ($remote && $token && $name && $owner && $remoteId && $shareWith) {
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if(!\OCP\Util::isValidFileName($name)) {
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return new \OC_OCS_Result(null, 400, 'The mountpoint name contains invalid characters.');
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}
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// FIXME this should be a method in the user management instead
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\OCP\Util::writeLog('files_sharing', 'shareWith before, ' . $shareWith, \OCP\Util::DEBUG);
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\OCP\Util::emitHook(
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'\OCA\Files_Sharing\API\Server2Server',
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'preLoginNameUsedAsUserName',
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array('uid' => &$shareWith)
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);
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\OCP\Util::writeLog('files_sharing', 'shareWith after, ' . $shareWith, \OCP\Util::DEBUG);
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if (!\OCP\User::userExists($shareWith)) {
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return new \OC_OCS_Result(null, 400, 'User does not exists');
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}
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\OC_Util::setupFS($shareWith);
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$discoveryManager = new DiscoveryManager(
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\OC::$server->getMemCacheFactory(),
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\OC::$server->getHTTPClientService()
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);
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$externalManager = new \OCA\Files_Sharing\External\Manager(
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\OC::$server->getDatabaseConnection(),
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\OC\Files\Filesystem::getMountManager(),
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\OC\Files\Filesystem::getLoader(),
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\OC::$server->getHTTPClientService(),
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\OC::$server->getNotificationManager(),
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$discoveryManager,
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$shareWith
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);
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try {
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$externalManager->addShare($remote, $token, '', $name, $owner, false, $shareWith, $remoteId);
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$shareId = \OC::$server->getDatabaseConnection()->lastInsertId('*PREFIX*share_external');
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if ($ownerFederatedId === null) {
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$ownerFederatedId = $owner . '@' . $this->cleanupRemote($remote);
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}
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// if the owner of the share and the initiator are the same user
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// we also complete the federated share ID for the initiator
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if ($sharedByFederatedId === null && $owner === $sharedBy) {
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$sharedByFederatedId = $ownerFederatedId;
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}
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\OC::$server->getActivityManager()->publishActivity(
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Activity::FILES_SHARING_APP, Activity::SUBJECT_REMOTE_SHARE_RECEIVED, array($ownerFederatedId, trim($name, '/')), '', array(),
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'', '', $shareWith, Activity::TYPE_REMOTE_SHARE, Activity::PRIORITY_LOW);
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$urlGenerator = \OC::$server->getURLGenerator();
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$notificationManager = \OC::$server->getNotificationManager();
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$notification = $notificationManager->createNotification();
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$notification->setApp('files_sharing')
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->setUser($shareWith)
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->setDateTime(new \DateTime())
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->setObject('remote_share', $shareId)
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->setSubject('remote_share', [$ownerFederatedId, $sharedByFederatedId, trim($name, '/')]);
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$declineAction = $notification->createAction();
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$declineAction->setLabel('decline')
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->setLink($urlGenerator->getAbsoluteURL($urlGenerator->linkTo('', 'ocs/v1.php/apps/files_sharing/api/v1/remote_shares/pending/' . $shareId)), 'DELETE');
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$notification->addAction($declineAction);
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$acceptAction = $notification->createAction();
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$acceptAction->setLabel('accept')
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->setLink($urlGenerator->getAbsoluteURL($urlGenerator->linkTo('', 'ocs/v1.php/apps/files_sharing/api/v1/remote_shares/pending/' . $shareId)), 'POST');
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$notification->addAction($acceptAction);
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$notificationManager->notify($notification);
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return new \OC_OCS_Result();
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} catch (\Exception $e) {
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\OCP\Util::writeLog('files_sharing', 'server can not add remote share, ' . $e->getMessage(), \OCP\Util::ERROR);
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return new \OC_OCS_Result(null, 500, 'internal server error, was not able to add share from ' . $remote);
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}
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}
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return new \OC_OCS_Result(null, 400, 'server can not add remote share, missing parameter');
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}
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/**
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* create re-share on behalf of another user
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*
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* @param $params
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* @return \OC_OCS_Result
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*/
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public function reShare($params) {
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$id = isset($params['id']) ? (int)$params['id'] : null;
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$token = $this->request->getParam('token', null);
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$shareWith = $this->request->getParam('shareWith', null);
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$permission = (int)$this->request->getParam('permission', null);
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$remoteId = (int)$this->request->getParam('remoteId', null);
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if ($id === null ||
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$token === null ||
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$shareWith === null ||
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$permission === null ||
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$remoteId === null
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) {
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return new \OC_OCS_Result(null, Http::STATUS_BAD_REQUEST);
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}
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try {
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$share = $this->federatedShareProvider->getShareById($id);
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} catch (Share\Exceptions\ShareNotFound $e) {
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return new \OC_OCS_Result(null, Http::STATUS_NOT_FOUND);
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}
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// don't allow to share a file back to the owner
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list($user, $remote) = $this->addressHandler->splitUserRemote($shareWith);
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$owner = $share->getShareOwner();
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$currentServer = $this->addressHandler->generateRemoteURL();
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if ($this->addressHandler->compareAddresses($user, $remote,$owner , $currentServer)) {
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return new \OC_OCS_Result(null, Http::STATUS_FORBIDDEN);
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}
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if ($this->verifyShare($share, $token)) {
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// check if re-sharing is allowed
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if ($share->getPermissions() | ~Constants::PERMISSION_SHARE) {
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$share->setPermissions($share->getPermissions() & $permission);
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// the recipient of the initial share is now the initiator for the re-share
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$share->setSharedBy($share->getSharedWith());
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$share->setSharedWith($shareWith);
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try {
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$result = $this->federatedShareProvider->create($share);
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$this->federatedShareProvider->storeRemoteId((int)$result->getId(), $remoteId);
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return new \OC_OCS_Result(['token' => $result->getToken(), 'remoteId' => $result->getId()]);
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} catch (\Exception $e) {
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return new \OC_OCS_Result(null, Http::STATUS_BAD_REQUEST);
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}
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} else {
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return new \OC_OCS_Result(null, Http::STATUS_FORBIDDEN);
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}
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}
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return new \OC_OCS_Result(null, Http::STATUS_BAD_REQUEST);
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}
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/**
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* accept server-to-server share
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*
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* @param array $params
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* @return \OC_OCS_Result
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*/
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public function acceptShare($params) {
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if (!$this->isS2SEnabled()) {
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return new \OC_OCS_Result(null, 503, 'Server does not support federated cloud sharing');
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}
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$id = $params['id'];
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$token = isset($_POST['token']) ? $_POST['token'] : null;
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try {
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$share = $this->federatedShareProvider->getShareById($id);
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} catch (Share\Exceptions\ShareNotFound $e) {
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return new \OC_OCS_Result();
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}
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if ($this->verifyShare($share, $token)) {
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$this->executeAcceptShare($share);
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if ($share->getShareOwner() !== $share->getSharedBy()) {
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list(, $remote) = $this->addressHandler->splitUserRemote($share->getSharedBy());
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$remoteId = $this->federatedShareProvider->getRemoteId($share);
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$this->notifications->sendAcceptShare($remote, $remoteId, $share->getToken());
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}
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}
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return new \OC_OCS_Result();
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}
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protected function executeAcceptShare(Share\IShare $share) {
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list($file, $link) = $this->getFile($this->getCorrectUid($share), $share->getNode()->getId());
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$event = \OC::$server->getActivityManager()->generateEvent();
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$event->setApp(Activity::FILES_SHARING_APP)
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->setType(Activity::TYPE_REMOTE_SHARE)
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->setAffectedUser($this->getCorrectUid($share))
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->setSubject(Activity::SUBJECT_REMOTE_SHARE_ACCEPTED, [$share->getSharedWith(), basename($file)])
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->setObject('files', $share->getNode()->getId(), $file)
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->setLink($link);
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\OC::$server->getActivityManager()->publish($event);
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}
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/**
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* decline server-to-server share
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*
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* @param array $params
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* @return \OC_OCS_Result
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*/
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public function declineShare($params) {
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if (!$this->isS2SEnabled()) {
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return new \OC_OCS_Result(null, 503, 'Server does not support federated cloud sharing');
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}
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$id = (int)$params['id'];
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$token = isset($_POST['token']) ? $_POST['token'] : null;
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try {
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$share = $this->federatedShareProvider->getShareById($id);
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} catch (Share\Exceptions\ShareNotFound $e) {
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return new \OC_OCS_Result();
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}
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if($this->verifyShare($share, $token)) {
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if ($share->getShareOwner() !== $share->getSharedBy()) {
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list(, $remote) = $this->addressHandler->splitUserRemote($share->getSharedBy());
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$remoteId = $this->federatedShareProvider->getRemoteId($share);
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$this->notifications->sendDeclineShare($remote, $remoteId, $share->getToken());
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}
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$this->executeDeclineShare($share);
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}
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return new \OC_OCS_Result();
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}
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/**
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* delete declined share and create a activity
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*
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* @param Share\IShare $share
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*/
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protected function executeDeclineShare(Share\IShare $share) {
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$this->federatedShareProvider->removeShareFromTable($share);
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list($file, $link) = $this->getFile($this->getCorrectUid($share), $share->getNode()->getId());
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$event = \OC::$server->getActivityManager()->generateEvent();
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$event->setApp(Activity::FILES_SHARING_APP)
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->setType(Activity::TYPE_REMOTE_SHARE)
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->setAffectedUser($this->getCorrectUid($share))
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->setSubject(Activity::SUBJECT_REMOTE_SHARE_DECLINED, [$share->getSharedWith(), basename($file)])
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->setObject('files', $share->getNode()->getId(), $file)
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->setLink($link);
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\OC::$server->getActivityManager()->publish($event);
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}
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/**
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* check if we are the initiator or the owner of a re-share and return the correct UID
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*
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* @param Share\IShare $share
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* @return string
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*/
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protected function getCorrectUid(Share\IShare $share) {
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if($this->userManager->userExists($share->getShareOwner())) {
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return $share->getShareOwner();
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}
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return $share->getSharedBy();
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}
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/**
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* remove server-to-server share if it was unshared by the owner
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*
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* @param array $params
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* @return \OC_OCS_Result
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*/
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public function unshare($params) {
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if (!$this->isS2SEnabled()) {
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return new \OC_OCS_Result(null, 503, 'Server does not support federated cloud sharing');
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}
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$id = $params['id'];
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$token = isset($_POST['token']) ? $_POST['token'] : null;
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$query = \OCP\DB::prepare('SELECT * FROM `*PREFIX*share_external` WHERE `remote_id` = ? AND `share_token` = ?');
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$query->execute(array($id, $token));
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$share = $query->fetchRow();
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if ($token && $id && !empty($share)) {
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$remote = $this->cleanupRemote($share['remote']);
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$owner = $share['owner'] . '@' . $remote;
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$mountpoint = $share['mountpoint'];
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$user = $share['user'];
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$query = \OCP\DB::prepare('DELETE FROM `*PREFIX*share_external` WHERE `remote_id` = ? AND `share_token` = ?');
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$query->execute(array($id, $token));
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if ($share['accepted']) {
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$path = trim($mountpoint, '/');
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} else {
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$path = trim($share['name'], '/');
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}
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$notificationManager = \OC::$server->getNotificationManager();
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$notification = $notificationManager->createNotification();
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$notification->setApp('files_sharing')
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->setUser($share['user'])
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->setObject('remote_share', (int) $share['id']);
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$notificationManager->markProcessed($notification);
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\OC::$server->getActivityManager()->publishActivity(
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Activity::FILES_SHARING_APP, Activity::SUBJECT_REMOTE_SHARE_UNSHARED, array($owner, $path), '', array(),
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'', '', $user, Activity::TYPE_REMOTE_SHARE, Activity::PRIORITY_MEDIUM);
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}
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return new \OC_OCS_Result();
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}
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private function cleanupRemote($remote) {
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$remote = substr($remote, strpos($remote, '://') + 3);
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return rtrim($remote, '/');
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}
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|
|
|
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/**
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* federated share was revoked, either by the owner or the re-sharer
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*
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* @param $params
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* @return \OC_OCS_Result
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*/
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public function revoke($params) {
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$id = (int)$params['id'];
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$token = $this->request->getParam('token');
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$share = $this->federatedShareProvider->getShareById($id);
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if ($this->verifyShare($share, $token)) {
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$this->federatedShareProvider->removeShareFromTable($share);
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return new \OC_OCS_Result();
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}
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return new \OC_OCS_Result(null, Http::STATUS_BAD_REQUEST);
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}
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|
|
/**
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* get share
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*
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* @param int $id
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* @param string $token
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* @return array|bool
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*/
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protected function getShare($id, $token) {
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$query = $this->connection->getQueryBuilder();
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$query->select('*')->from($this->shareTable)
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->where($query->expr()->eq('token', $query->createNamedParameter($token)))
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->andWhere($query->expr()->eq('share_type', $query->createNamedParameter(FederatedShareProvider::SHARE_TYPE_REMOTE)))
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->andWhere($query->expr()->eq('id', $query->createNamedParameter($id)));
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$result = $query->execute()->fetchAll();
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if (!empty($result) && isset($result[0])) {
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return $result[0];
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}
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|
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return false;
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}
|
|
|
|
/**
|
|
* get file
|
|
*
|
|
* @param string $user
|
|
* @param int $fileSource
|
|
* @return array with internal path of the file and a absolute link to it
|
|
*/
|
|
private function getFile($user, $fileSource) {
|
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\OC_Util::setupFS($user);
|
|
|
|
try {
|
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$file = \OC\Files\Filesystem::getPath($fileSource);
|
|
} catch (NotFoundException $e) {
|
|
$file = null;
|
|
}
|
|
$args = \OC\Files\Filesystem::is_dir($file) ? array('dir' => $file) : array('dir' => dirname($file), 'scrollto' => $file);
|
|
$link = \OCP\Util::linkToAbsolute('files', 'index.php', $args);
|
|
|
|
return array($file, $link);
|
|
|
|
}
|
|
|
|
/**
|
|
* check if server-to-server sharing is enabled
|
|
*
|
|
* @param bool $incoming
|
|
* @return bool
|
|
*/
|
|
private function isS2SEnabled($incoming = false) {
|
|
|
|
$result = \OCP\App::isEnabled('files_sharing');
|
|
|
|
if ($incoming) {
|
|
$result = $result && $this->federatedShareProvider->isIncomingServer2serverShareEnabled();
|
|
} else {
|
|
$result = $result && $this->federatedShareProvider->isOutgoingServer2serverShareEnabled();
|
|
}
|
|
|
|
return $result;
|
|
}
|
|
|
|
/**
|
|
* check if we got the right share
|
|
*
|
|
* @param Share\IShare $share
|
|
* @param string $token
|
|
* @return bool
|
|
*/
|
|
protected function verifyShare(Share\IShare $share, $token) {
|
|
if (
|
|
$share->getShareType() === FederatedShareProvider::SHARE_TYPE_REMOTE &&
|
|
$share->getToken() === $token
|
|
) {
|
|
return true;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* update share information to keep federated re-shares in sync
|
|
*
|
|
* @param array $params
|
|
* @return \OC_OCS_Result
|
|
*/
|
|
public function updatePermissions($params) {
|
|
$id = (int)$params['id'];
|
|
$token = $this->request->getParam('token', null);
|
|
$permissions = $this->request->getParam('permissions', null);
|
|
|
|
try {
|
|
$share = $this->federatedShareProvider->getShareById($id);
|
|
} catch (Share\Exceptions\ShareNotFound $e) {
|
|
return new \OC_OCS_Result(null, Http::STATUS_BAD_REQUEST);
|
|
}
|
|
|
|
$validPermission = ctype_digit($permissions);
|
|
$validToken = $this->verifyShare($share, $token);
|
|
if ($validPermission && $validToken) {
|
|
$this->updatePermissionsInDatabase($share, (int)$permissions);
|
|
} else {
|
|
return new \OC_OCS_Result(null, Http::STATUS_BAD_REQUEST);
|
|
}
|
|
|
|
return new \OC_OCS_Result();
|
|
}
|
|
|
|
/**
|
|
* update permissions in database
|
|
*
|
|
* @param IShare $share
|
|
* @param int $permissions
|
|
*/
|
|
protected function updatePermissionsInDatabase(IShare $share, $permissions) {
|
|
$query = $this->connection->getQueryBuilder();
|
|
$query->update('share')
|
|
->where($query->expr()->eq('id', $query->createNamedParameter($share->getId())))
|
|
->set('permissions', $query->createNamedParameter($permissions))
|
|
->execute();
|
|
}
|
|
|
|
}
|