owncloud/core

<?php
/**
 * @author Thomas Müller <thomas.mueller@tmit.eu>
 *
 * @copyright Copyright (c) 2019, 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\PublicFiles;

use OCP\Constants;
use OCP\Files\Folder;
use OCP\Files\InvalidPathException;
use OCP\Files\NotFoundException;
use OCP\Files\NotPermittedException;
use OCP\Share\IShare;
use Sabre\DAV\Collection;
use Sabre\DAV\Exception\Forbidden;
use Sabre\DAVACL\IACL;

/**
 * Class SharedFolder - represents a folder living in a public shared folder
 *
 * @package OCA\DAV\Files\PublicFiles
 */
class SharedFolder extends Collection implements IACL, IPublicSharedNode {
    use SharedNodeTrait, NodeFactoryTrait;

    /** @var Folder */
    private $folder;

    /**
     * SharedFolder constructor.
     *
     * @param Folder $folder
     * @param IShare $share
     */
    public function __construct(Folder $folder, IShare $share) {
        $this->folder = $folder;
        $this->node = $folder;
        $this->share = $share;
    }

    /**
     * @inheritdoc
     */
    public function getChildren() {
        $nodes = $this->folder->getDirectoryListing();
        return \array_map(function ($node) {
            return $this->nodeFactory($node, $this->share);
        }, $nodes);
    }

    public function createDirectory($name) {
        try {
            $this->folder->newFolder($name);
        } catch (NotPermittedException $ex) {
            throw new Forbidden('Permission denied to create directory');
        }
    }

    public function createFile($name, $data = null) {
        try {
            $file = $this->folder->newFile($name);
            $file->putContent($data);
            return '"' . $file->getEtag() . '"';
        } catch (NotPermittedException $ex) {
            throw new Forbidden('Permission denied to create file');
        } catch (InvalidPathException $ex) {
            throw new Forbidden('Permission denied to create file');
        } catch (NotFoundException $ex) {
            throw new Forbidden('Permission denied to create file');
        }
    }

    public function getACL() {
        $acl = [
            [
                'privilege' => '{DAV:}all',
                'principal' => '{DAV:}owner',
                'protected' => true,
            ],
            [
                'privilege' => '{DAV:}read',
                'principal' => 'principals/system/public',
                'protected' => true,
            ]
        ];

        if ($this->checkSharePermissions(Constants::PERMISSION_DELETE)) {
            $acl[] =
                [
                    'privilege' => '{DAV:}unbind',
                    'principal' => 'principals/system/public',
                    'protected' => true,
                ];
        }
        if ($this->checkSharePermissions(Constants::PERMISSION_CREATE)) {
            $acl[] =
                [
                    'privilege' => '{DAV:}bind',
                    'principal' => 'principals/system/public',
                    'protected' => true,
                ];
        }

        return $acl;
    }
}