owncloud/core

<?php
/**
 * @author Christopher Schäpers <kondou@ts.unde.re>
 * @author Joas Schilling <coding@schilljs.com>
 * @author Jörn Friedrich Dreyer <jfd@butonic.de>
 * @author Michael Gapczynski <GapczynskiM@gmail.com>
 * @author Morris Jobke <hey@morrisjobke.de>
 * @author Robin Appelman <icewind@owncloud.com>
 * @author Roeland Jago Douma <rullzer@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\Files_Sharing;

use OC\Files\Cache\Wrapper\CacheJail;
use OCP\Files\Cache\ICacheEntry;
use OCP\Files\Storage\IStorage;

/**
 * Metadata cache for shared files
 *
 * don't use this class directly if you need to get metadata, use \OC\Files\Filesystem::getFileInfo instead
 */
class Cache extends CacheJail {
    /**
     * @var \OCA\Files_Sharing\SharedStorage
     */
    private $storage;

    /**
     * @var IStorage
     */
    private $sourceStorage;

    /**
     * @var ICacheEntry
     */
    private $sourceRootInfo;

    /**
     * @var \OCP\Files\Cache\ICache
     */
    private $sourceCache;

    /**
     * @param \OCA\Files_Sharing\SharedStorage $storage
     * @param IStorage $sourceStorage
     * @param ICacheEntry $sourceRootInfo
     */
    public function __construct($storage, IStorage $sourceStorage, ICacheEntry $sourceRootInfo) {
        $this->storage = $storage;
        $this->sourceStorage = $sourceStorage;
        $this->sourceRootInfo = $sourceRootInfo;
        $this->sourceCache = $sourceStorage->getCache();
        parent::__construct(
            $this->sourceCache,
            $this->sourceRootInfo->getPath()
        );
    }

    protected function formatCacheEntry($entry) {
        $path = isset($entry['path']) ? $entry['path'] : '';
        $entry = parent::formatCacheEntry($entry);
        $sharePermissions = $this->storage->getPermissions($path);
        if (isset($entry['permissions'])) {
            $entry['permissions'] &= $sharePermissions;
        } else {
            $entry['permissions'] = $sharePermissions;
        }
        $entry['uid_owner'] = $this->storage->getOwner($path);
        $entry['displayname_owner'] = \OC_User::getDisplayName($entry['uid_owner']);
        if ($path === '') {
            $entry['is_share_mount_point'] = true;
        }
        return $entry;
    }

    /**
     * remove all entries for files that are stored on the storage from the cache
     */
    public function clear() {
        // Not a valid action for Shared Cache
    }
}