621 lines
21 KiB
PHP
621 lines
21 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 Bjoern Schiessle <bjoern@schiessle.org>
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* @author Björn Schießle <bjoern@schiessle.org>
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* @author Georg Ehrke <georg@owncloud.com>
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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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* @author Piotr Filiciak <piotr@filiciak.pl>
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* @author Robin Appelman <robin@icewind.nl>
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* @author Roeland Jago Douma <roeland@famdouma.nl>
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* @author Vincent Petry <pvince81@owncloud.com>
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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\Files_Sharing\Controller;
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use OC\Files\Node\Folder;
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use OC_Files;
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use OC_Util;
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use OCA\FederatedFileSharing\FederatedShareProvider;
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use OCP\Defaults;
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use OCP\IL10N;
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use OCP\Template;
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use OCP\Share;
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use OCP\AppFramework\Controller;
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use OCP\IRequest;
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use OCP\AppFramework\Http\TemplateResponse;
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use OCP\AppFramework\Http\RedirectResponse;
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use OCP\AppFramework\Http\NotFoundResponse;
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use OCP\IURLGenerator;
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use OCP\IConfig;
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use OCP\ILogger;
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use OCP\IUserManager;
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use OCP\ISession;
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use OCP\IPreview;
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use OCA\Files_Sharing\Activity\Providers\Downloads;
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use \OCP\Files\NotFoundException;
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use OCP\Files\IRootFolder;
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use OCP\Share\Exceptions\ShareNotFound;
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use Symfony\Component\EventDispatcher\EventDispatcherInterface;
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/**
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* Class ShareController
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*
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* @package OCA\Files_Sharing\Controllers
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*/
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class ShareController extends Controller {
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/** @var IConfig */
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protected $config;
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/** @var IURLGenerator */
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protected $urlGenerator;
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/** @var IUserManager */
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protected $userManager;
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/** @var ILogger */
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protected $logger;
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/** @var \OCP\Activity\IManager */
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protected $activityManager;
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/** @var \OCP\Share\IManager */
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protected $shareManager;
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/** @var ISession */
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protected $session;
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/** @var IPreview */
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protected $previewManager;
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/** @var IRootFolder */
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protected $rootFolder;
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/** @var FederatedShareProvider */
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protected $federatedShareProvider;
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/** @var EventDispatcherInterface */
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protected $eventDispatcher;
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/** @var IL10N */
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protected $l10n;
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/** @var Defaults */
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protected $defaults;
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/**
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* @param string $appName
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* @param IRequest $request
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* @param IConfig $config
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* @param IURLGenerator $urlGenerator
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* @param IUserManager $userManager
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* @param ILogger $logger
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* @param \OCP\Activity\IManager $activityManager
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* @param \OCP\Share\IManager $shareManager
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* @param ISession $session
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* @param IPreview $previewManager
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* @param IRootFolder $rootFolder
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* @param FederatedShareProvider $federatedShareProvider
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* @param EventDispatcherInterface $eventDispatcher
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* @param IL10N $l10n
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* @param Defaults $defaults
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*/
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public function __construct($appName,
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IRequest $request,
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IConfig $config,
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IURLGenerator $urlGenerator,
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IUserManager $userManager,
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ILogger $logger,
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\OCP\Activity\IManager $activityManager,
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\OCP\Share\IManager $shareManager,
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ISession $session,
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IPreview $previewManager,
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IRootFolder $rootFolder,
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FederatedShareProvider $federatedShareProvider,
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EventDispatcherInterface $eventDispatcher,
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IL10N $l10n,
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Defaults $defaults) {
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parent::__construct($appName, $request);
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$this->config = $config;
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$this->urlGenerator = $urlGenerator;
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$this->userManager = $userManager;
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$this->logger = $logger;
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$this->activityManager = $activityManager;
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$this->shareManager = $shareManager;
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$this->session = $session;
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$this->previewManager = $previewManager;
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$this->rootFolder = $rootFolder;
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$this->federatedShareProvider = $federatedShareProvider;
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$this->eventDispatcher = $eventDispatcher;
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$this->l10n = $l10n;
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$this->defaults = $defaults;
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}
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/**
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* @PublicPage
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* @NoCSRFRequired
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*
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* @param string $token
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* @return TemplateResponse|RedirectResponse
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*/
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public function showAuthenticate($token) {
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$share = $this->shareManager->getShareByToken($token);
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if($this->linkShareAuth($share)) {
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return new RedirectResponse($this->urlGenerator->linkToRoute('files_sharing.sharecontroller.showShare', array('token' => $token)));
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}
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return new TemplateResponse($this->appName, 'authenticate', array(), 'guest');
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}
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/**
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* @PublicPage
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* @UseSession
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* @BruteForceProtection(action=publicLinkAuth)
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*
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* Authenticates against password-protected shares
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* @param string $token
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* @param string $password
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* @return RedirectResponse|TemplateResponse|NotFoundResponse
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*/
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public function authenticate($token, $password = '') {
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// Check whether share exists
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try {
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$share = $this->shareManager->getShareByToken($token);
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} catch (ShareNotFound $e) {
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return new NotFoundResponse();
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}
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$authenticate = $this->linkShareAuth($share, $password);
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if($authenticate === true) {
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return new RedirectResponse($this->urlGenerator->linkToRoute('files_sharing.sharecontroller.showShare', array('token' => $token)));
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}
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$response = new TemplateResponse($this->appName, 'authenticate', array('wrongpw' => true), 'guest');
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$response->throttle();
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return $response;
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}
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/**
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* Authenticate a link item with the given password.
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* Or use the session if no password is provided.
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*
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* This is a modified version of Helper::authenticate
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* TODO: Try to merge back eventually with Helper::authenticate
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*
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* @param \OCP\Share\IShare $share
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* @param string|null $password
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* @return bool
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*/
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private function linkShareAuth(\OCP\Share\IShare $share, $password = null) {
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if ($password !== null) {
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if ($this->shareManager->checkPassword($share, $password)) {
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$this->session->set('public_link_authenticated', (string)$share->getId());
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} else {
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$this->emitAccessShareHook($share, 403, 'Wrong password');
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return false;
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}
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} else {
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// not authenticated ?
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if ( ! $this->session->exists('public_link_authenticated')
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|| $this->session->get('public_link_authenticated') !== (string)$share->getId()) {
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return false;
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}
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}
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return true;
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}
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/**
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* throws hooks when a share is attempted to be accessed
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*
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* @param \OCP\Share\IShare|string $share the Share instance if available,
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* otherwise token
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* @param int $errorCode
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* @param string $errorMessage
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* @throws \OC\HintException
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* @throws \OC\ServerNotAvailableException
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*/
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protected function emitAccessShareHook($share, $errorCode = 200, $errorMessage = '') {
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$itemType = $itemSource = $uidOwner = '';
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$token = $share;
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$exception = null;
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if($share instanceof \OCP\Share\IShare) {
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try {
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$token = $share->getToken();
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$uidOwner = $share->getSharedBy();
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$itemType = $share->getNodeType();
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$itemSource = $share->getNodeId();
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} catch (\Exception $e) {
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// we log what we know and pass on the exception afterwards
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$exception = $e;
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}
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}
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\OC_Hook::emit('OCP\Share', 'share_link_access', [
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'itemType' => $itemType,
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'itemSource' => $itemSource,
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'uidOwner' => $uidOwner,
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'token' => $token,
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'errorCode' => $errorCode,
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'errorMessage' => $errorMessage,
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]);
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if(!is_null($exception)) {
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throw $exception;
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}
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}
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/**
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* Validate the permissions of the share
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*
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* @param Share\IShare $share
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* @return bool
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*/
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private function validateShare(\OCP\Share\IShare $share) {
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return $share->getNode()->isReadable() && $share->getNode()->isShareable();
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}
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/**
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* @PublicPage
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* @NoCSRFRequired
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*
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* @param string $token
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* @param string $path
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* @return TemplateResponse|RedirectResponse|NotFoundResponse
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* @throws NotFoundException
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* @throws \Exception
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*/
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public function showShare($token, $path = '') {
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\OC_User::setIncognitoMode(true);
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// Check whether share exists
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try {
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$share = $this->shareManager->getShareByToken($token);
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} catch (ShareNotFound $e) {
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$this->emitAccessShareHook($token, 404, 'Share not found');
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return new NotFoundResponse();
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}
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// Share is password protected - check whether the user is permitted to access the share
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if ($share->getPassword() !== null && !$this->linkShareAuth($share)) {
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return new RedirectResponse($this->urlGenerator->linkToRoute('files_sharing.sharecontroller.authenticate',
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array('token' => $token)));
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}
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if (!$this->validateShare($share)) {
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throw new NotFoundException();
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}
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// We can't get the path of a file share
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try {
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if ($share->getNode() instanceof \OCP\Files\File && $path !== '') {
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$this->emitAccessShareHook($share, 404, 'Share not found');
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throw new NotFoundException();
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}
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} catch (\Exception $e) {
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$this->emitAccessShareHook($share, 404, 'Share not found');
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throw $e;
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}
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$shareTmpl = [];
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$shareTmpl['displayName'] = $this->userManager->get($share->getShareOwner())->getDisplayName();
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$shareTmpl['owner'] = $share->getShareOwner();
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$shareTmpl['filename'] = $share->getNode()->getName();
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$shareTmpl['directory_path'] = $share->getTarget();
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$shareTmpl['mimetype'] = $share->getNode()->getMimetype();
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$shareTmpl['previewSupported'] = $this->previewManager->isMimeSupported($share->getNode()->getMimetype());
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$shareTmpl['dirToken'] = $token;
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$shareTmpl['sharingToken'] = $token;
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$shareTmpl['server2serversharing'] = $this->federatedShareProvider->isOutgoingServer2serverShareEnabled();
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$shareTmpl['protected'] = $share->getPassword() !== null ? 'true' : 'false';
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$shareTmpl['dir'] = '';
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$shareTmpl['nonHumanFileSize'] = $share->getNode()->getSize();
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$shareTmpl['fileSize'] = \OCP\Util::humanFileSize($share->getNode()->getSize());
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// Show file list
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$hideFileList = false;
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if ($share->getNode() instanceof \OCP\Files\Folder) {
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/** @var \OCP\Files\Folder $rootFolder */
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$rootFolder = $share->getNode();
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try {
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$folderNode = $rootFolder->get($path);
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} catch (\OCP\Files\NotFoundException $e) {
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$this->emitAccessShareHook($share, 404, 'Share not found');
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throw new NotFoundException();
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}
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$shareTmpl['dir'] = $rootFolder->getRelativePath($folderNode->getPath());
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/*
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* The OC_Util methods require a view. This just uses the node API
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*/
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$freeSpace = $share->getNode()->getStorage()->free_space($share->getNode()->getInternalPath());
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if ($freeSpace < \OCP\Files\FileInfo::SPACE_UNLIMITED) {
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$freeSpace = max($freeSpace, 0);
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} else {
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$freeSpace = (INF > 0) ? INF: PHP_INT_MAX; // work around https://bugs.php.net/bug.php?id=69188
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}
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$hideFileList = $share->getPermissions() & \OCP\Constants::PERMISSION_READ ? false : true;
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$maxUploadFilesize = $freeSpace;
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$folder = new Template('files', 'list', '');
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$folder->assign('dir', $rootFolder->getRelativePath($folderNode->getPath()));
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$folder->assign('dirToken', $token);
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$folder->assign('permissions', \OCP\Constants::PERMISSION_READ);
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$folder->assign('isPublic', true);
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$folder->assign('hideFileList', $hideFileList);
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$folder->assign('publicUploadEnabled', 'no');
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$folder->assign('uploadMaxFilesize', $maxUploadFilesize);
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$folder->assign('uploadMaxHumanFilesize', \OCP\Util::humanFileSize($maxUploadFilesize));
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$folder->assign('freeSpace', $freeSpace);
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$folder->assign('usedSpacePercent', 0);
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$folder->assign('trash', false);
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$shareTmpl['folder'] = $folder->fetchPage();
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}
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$shareTmpl['hideFileList'] = $hideFileList;
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$shareTmpl['shareOwner'] = $this->userManager->get($share->getShareOwner())->getDisplayName();
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$shareTmpl['downloadURL'] = $this->urlGenerator->linkToRouteAbsolute('files_sharing.sharecontroller.downloadShare', ['token' => $token]);
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$shareTmpl['shareUrl'] = $this->urlGenerator->linkToRouteAbsolute('files_sharing.sharecontroller.showShare', ['token' => $token]);
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$shareTmpl['maxSizeAnimateGif'] = $this->config->getSystemValue('max_filesize_animated_gifs_public_sharing', 10);
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$shareTmpl['previewEnabled'] = $this->config->getSystemValue('enable_previews', true);
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$shareTmpl['previewMaxX'] = $this->config->getSystemValue('preview_max_x', 1024);
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$shareTmpl['previewMaxY'] = $this->config->getSystemValue('preview_max_y', 1024);
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$shareTmpl['disclaimer'] = $this->config->getAppValue('core', 'shareapi_public_link_disclaimertext', null);
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if ($shareTmpl['previewSupported']) {
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$shareTmpl['previewImage'] = $this->urlGenerator->linkToRouteAbsolute( 'files_sharing.PublicPreview.getPreview',
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['x' => 200, 'y' => 200, 'file' => $shareTmpl['directory_path'], 't' => $shareTmpl['dirToken']]);
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} else {
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$shareTmpl['previewImage'] = $this->urlGenerator->getAbsoluteURL($this->urlGenerator->imagePath('core', 'favicon-fb.png'));
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}
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// Load files we need
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\OCP\Util::addScript('files', 'file-upload');
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\OCP\Util::addStyle('files_sharing', 'publicView');
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\OCP\Util::addScript('files_sharing', 'public');
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\OCP\Util::addScript('files', 'fileactions');
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\OCP\Util::addScript('files', 'fileactionsmenu');
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\OCP\Util::addScript('files', 'jquery.fileupload');
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\OCP\Util::addScript('files_sharing', 'files_drop');
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if (isset($shareTmpl['folder'])) {
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// JS required for folders
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\OCP\Util::addStyle('files', 'merged');
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\OCP\Util::addScript('files', 'filesummary');
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\OCP\Util::addScript('files', 'breadcrumb');
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\OCP\Util::addScript('files', 'fileinfomodel');
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\OCP\Util::addScript('files', 'newfilemenu');
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\OCP\Util::addScript('files', 'files');
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\OCP\Util::addScript('files', 'filelist');
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\OCP\Util::addScript('files', 'keyboardshortcuts');
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}
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// OpenGraph Support: http://ogp.me/
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\OCP\Util::addHeader('meta', ['property' => "og:title", 'content' => $this->defaults->getName() . ($this->defaults->getSlogan() !== '' ? ' - ' . $this->defaults->getSlogan() : '')]);
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\OCP\Util::addHeader('meta', ['property' => "og:description", 'content' => $this->l10n->t('%s is publicly shared', [$shareTmpl['filename']])]);
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\OCP\Util::addHeader('meta', ['property' => "og:site_name", 'content' => $this->defaults->getName()]);
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\OCP\Util::addHeader('meta', ['property' => "og:url", 'content' => $shareTmpl['shareUrl']]);
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\OCP\Util::addHeader('meta', ['property' => "og:type", 'content' => "object"]);
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\OCP\Util::addHeader('meta', ['property' => "og:image", 'content' => $shareTmpl['previewImage']]);
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$this->eventDispatcher->dispatch('OCA\Files_Sharing::loadAdditionalScripts');
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$csp = new \OCP\AppFramework\Http\ContentSecurityPolicy();
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$csp->addAllowedFrameDomain('\'self\'');
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$response = new TemplateResponse($this->appName, 'public', $shareTmpl, 'base');
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$response->setContentSecurityPolicy($csp);
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$this->emitAccessShareHook($share);
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return $response;
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}
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/**
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* @PublicPage
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* @NoCSRFRequired
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*
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* @param string $token
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* @param string $files
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* @param string $path
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* @param string $downloadStartSecret
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* @return void|\OCP\AppFramework\Http\Response
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* @throws NotFoundException
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*/
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public function downloadShare($token, $files = null, $path = '', $downloadStartSecret = '') {
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\OC_User::setIncognitoMode(true);
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$share = $this->shareManager->getShareByToken($token);
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if(!($share->getPermissions() & \OCP\Constants::PERMISSION_READ)) {
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return new \OCP\AppFramework\Http\DataResponse('Share is read-only');
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}
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// Share is password protected - check whether the user is permitted to access the share
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if ($share->getPassword() !== null && !$this->linkShareAuth($share)) {
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return new RedirectResponse($this->urlGenerator->linkToRoute('files_sharing.sharecontroller.authenticate',
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['token' => $token]));
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}
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$files_list = null;
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if (!is_null($files)) { // download selected files
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$files_list = json_decode($files);
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// in case we get only a single file
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if ($files_list === null) {
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$files_list = [$files];
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}
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}
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$userFolder = $this->rootFolder->getUserFolder($share->getShareOwner());
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$originalSharePath = $userFolder->getRelativePath($share->getNode()->getPath());
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if (!$this->validateShare($share)) {
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throw new NotFoundException();
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}
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// Single file share
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if ($share->getNode() instanceof \OCP\Files\File) {
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// Single file download
|
|
$this->singleFileDownloaded($share, $share->getNode());
|
|
}
|
|
// Directory share
|
|
else {
|
|
/** @var \OCP\Files\Folder $node */
|
|
$node = $share->getNode();
|
|
|
|
// Try to get the path
|
|
if ($path !== '') {
|
|
try {
|
|
$node = $node->get($path);
|
|
} catch (NotFoundException $e) {
|
|
$this->emitAccessShareHook($share, 404, 'Share not found');
|
|
return new NotFoundResponse();
|
|
}
|
|
}
|
|
|
|
$originalSharePath = $userFolder->getRelativePath($node->getPath());
|
|
|
|
if ($node instanceof \OCP\Files\File) {
|
|
// Single file download
|
|
$this->singleFileDownloaded($share, $share->getNode());
|
|
} else if (!empty($files_list)) {
|
|
$this->fileListDownloaded($share, $files_list, $node);
|
|
} else {
|
|
// The folder is downloaded
|
|
$this->singleFileDownloaded($share, $share->getNode());
|
|
}
|
|
}
|
|
|
|
/* FIXME: We should do this all nicely in OCP */
|
|
OC_Util::tearDownFS();
|
|
OC_Util::setupFS($share->getShareOwner());
|
|
|
|
/**
|
|
* this sets a cookie to be able to recognize the start of the download
|
|
* the content must not be longer than 32 characters and must only contain
|
|
* alphanumeric characters
|
|
*/
|
|
if (!empty($downloadStartSecret)
|
|
&& !isset($downloadStartSecret[32])
|
|
&& preg_match('!^[a-zA-Z0-9]+$!', $downloadStartSecret) === 1) {
|
|
|
|
// FIXME: set on the response once we use an actual app framework response
|
|
setcookie('ocDownloadStarted', $downloadStartSecret, time() + 20, '/');
|
|
}
|
|
|
|
$this->emitAccessShareHook($share);
|
|
|
|
$server_params = array( 'head' => $this->request->getMethod() === 'HEAD' );
|
|
|
|
/**
|
|
* Http range requests support
|
|
*/
|
|
if (isset($_SERVER['HTTP_RANGE'])) {
|
|
$server_params['range'] = $this->request->getHeader('Range');
|
|
}
|
|
|
|
// download selected files
|
|
if (!is_null($files) && $files !== '') {
|
|
// FIXME: The exit is required here because otherwise the AppFramework is trying to add headers as well
|
|
// after dispatching the request which results in a "Cannot modify header information" notice.
|
|
OC_Files::get($originalSharePath, $files_list, $server_params);
|
|
exit();
|
|
} else {
|
|
// FIXME: The exit is required here because otherwise the AppFramework is trying to add headers as well
|
|
// after dispatching the request which results in a "Cannot modify header information" notice.
|
|
OC_Files::get(dirname($originalSharePath), basename($originalSharePath), $server_params);
|
|
exit();
|
|
}
|
|
}
|
|
|
|
/**
|
|
* create activity for every downloaded file
|
|
*
|
|
* @param Share\IShare $share
|
|
* @param array $files_list
|
|
* @param \OCP\Files\Folder $node
|
|
*/
|
|
protected function fileListDownloaded(Share\IShare $share, array $files_list, \OCP\Files\Folder $node) {
|
|
foreach ($files_list as $file) {
|
|
$subNode = $node->get($file);
|
|
$this->singleFileDownloaded($share, $subNode);
|
|
}
|
|
|
|
}
|
|
|
|
/**
|
|
* create activity if a single file was downloaded from a link share
|
|
*
|
|
* @param Share\IShare $share
|
|
*/
|
|
protected function singleFileDownloaded(Share\IShare $share, \OCP\Files\Node $node) {
|
|
|
|
$fileId = $node->getId();
|
|
|
|
$userFolder = $this->rootFolder->getUserFolder($share->getSharedBy());
|
|
$userNodeList = $userFolder->getById($fileId);
|
|
$userNode = $userNodeList[0];
|
|
$ownerFolder = $this->rootFolder->getUserFolder($share->getShareOwner());
|
|
$userPath = $userFolder->getRelativePath($userNode->getPath());
|
|
$ownerPath = $ownerFolder->getRelativePath($node->getPath());
|
|
|
|
$parameters = [$userPath];
|
|
|
|
if ($share->getShareType() === \OCP\Share::SHARE_TYPE_EMAIL) {
|
|
if ($node instanceof \OCP\Files\File) {
|
|
$subject = Downloads::SUBJECT_SHARED_FILE_BY_EMAIL_DOWNLOADED;
|
|
} else {
|
|
$subject = Downloads::SUBJECT_SHARED_FOLDER_BY_EMAIL_DOWNLOADED;
|
|
}
|
|
$parameters[] = $share->getSharedWith();
|
|
} else {
|
|
if ($node instanceof \OCP\Files\File) {
|
|
$subject = Downloads::SUBJECT_PUBLIC_SHARED_FILE_DOWNLOADED;
|
|
} else {
|
|
$subject = Downloads::SUBJECT_PUBLIC_SHARED_FOLDER_DOWNLOADED;
|
|
}
|
|
}
|
|
|
|
$this->publishActivity($subject, $parameters, $share->getSharedBy(), $fileId, $userPath);
|
|
|
|
if ($share->getShareOwner() !== $share->getSharedBy()) {
|
|
$parameters[0] = $ownerPath;
|
|
$this->publishActivity($subject, $parameters, $share->getShareOwner(), $fileId, $ownerPath);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* publish activity
|
|
*
|
|
* @param string $subject
|
|
* @param array $parameters
|
|
* @param string $affectedUser
|
|
* @param int $fileId
|
|
* @param string $filePath
|
|
*/
|
|
protected function publishActivity($subject,
|
|
array $parameters,
|
|
$affectedUser,
|
|
$fileId,
|
|
$filePath) {
|
|
|
|
$event = $this->activityManager->generateEvent();
|
|
$event->setApp('files_sharing')
|
|
->setType('public_links')
|
|
->setSubject($subject, $parameters)
|
|
->setAffectedUser($affectedUser)
|
|
->setObject('files', $fileId, $filePath);
|
|
$this->activityManager->publish($event);
|
|
}
|
|
|
|
|
|
}
|