owncloud/core

<?php
/**
 * @author Robin Appelman <icewind@owncloud.com>
 *
 * @copyright Copyright (c) 2018, ownCloud GmbH
 * @license AGPL-3.0
 *
 * This code is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License, version 3,
 * as published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License, version 3,
 * along with this program.  If not, see <http://www.gnu.org/licenses/>
 *
 */

namespace OCA\DAV\Files\Sharing;

use OCP\Files\FileInfo;
use Sabre\DAV\Exception\NotFound;
use Sabre\DAV\ServerPlugin;
use Sabre\HTTP\RequestInterface;
use Sabre\HTTP\ResponseInterface;

/**
 * Verify that the public link share is valid
 */
class PublicLinkCheckPlugin extends ServerPlugin {
    /**
     * @var FileInfo
     */
    private $fileInfo;

    /**
     * @param FileInfo $fileInfo
     */
    public function setFileInfo($fileInfo) {
        $this->fileInfo = $fileInfo;
    }

    /**
     * This initializes the plugin.
     *
     * @param \Sabre\DAV\Server $server Sabre server
     *
     * @return void
     */
    public function initialize(\Sabre\DAV\Server $server) {
        $server->on('beforeMethod:*', [$this, 'beforeMethod']);
    }

    public function beforeMethod(RequestInterface $request, ResponseInterface $response) {
        // verify that the owner didn't have his share permissions revoked
        if ($this->fileInfo && !$this->fileInfo->isShareable()) {
            throw new NotFound();
        }
    }
}