nextcloud/apps/files_sharing/lib/Cache.php

143 lines
3.8 KiB
PHP

<?php
/**
* @copyright Copyright (c) 2016, ownCloud, Inc.
*
* @author Christopher Schäpers <kondou@ts.unde.re>
* @author Jörn Friedrich Dreyer <jfd@butonic.de>
* @author Michael Gapczynski <GapczynskiM@gmail.com>
* @author Morris Jobke <hey@morrisjobke.de>
* @author Robin Appelman <robin@icewind.nl>
* @author Roeland Jago Douma <roeland@famdouma.nl>
*
* @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 ICacheEntry
*/
private $sourceRootInfo;
private $rootUnchanged = true;
private $ownerDisplayName;
private $numericId;
/**
* @param \OCA\Files_Sharing\SharedStorage $storage
* @param ICacheEntry $sourceRootInfo
*/
public function __construct($storage, ICacheEntry $sourceRootInfo) {
$this->storage = $storage;
$this->sourceRootInfo = $sourceRootInfo;
$this->numericId = $sourceRootInfo->getStorageId();
parent::__construct(
null,
$this->sourceRootInfo->getPath()
);
}
public function getCache() {
if (is_null($this->cache)) {
$this->cache = $this->storage->getSourceStorage()->getCache();
}
return $this->cache;
}
public function getNumericStorageId() {
if (isset($this->numericId)) {
return $this->numericId;
} else {
return false;
}
}
public function get($file) {
if ($this->rootUnchanged && ($file === '' || $file === $this->sourceRootInfo->getId())) {
return $this->formatCacheEntry(clone $this->sourceRootInfo);
}
return parent::get($file);
}
public function update($id, array $data) {
$this->rootUnchanged = false;
parent::update($id, $data);
}
public function insert($file, array $data) {
$this->rootUnchanged = false;
return parent::insert($file, $data);
}
public function remove($file) {
$this->rootUnchanged = false;
parent::remove($file);
}
public function moveFromCache(\OCP\Files\Cache\ICache $sourceCache, $sourcePath, $targetPath) {
$this->rootUnchanged = false;
return parent::moveFromCache($sourceCache, $sourcePath, $targetPath);
}
protected function formatCacheEntry($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'] = $this->getOwnerDisplayName();
if ($path === '') {
$entry['is_share_mount_point'] = true;
}
return $entry;
}
private function getOwnerDisplayName() {
if (!$this->ownerDisplayName) {
$this->ownerDisplayName = \OC_User::getDisplayName($this->storage->getOwner(''));
}
return $this->ownerDisplayName;
}
/**
* remove all entries for files that are stored on the storage from the cache
*/
public function clear() {
// Not a valid action for Shared Cache
}
}