nextcloud/apps/files_sharing/lib/Cache.php

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<?php
/**
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* @copyright Copyright (c) 2016, ownCloud, Inc.
*
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* @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>
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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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*
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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
* it under the terms of the GNU Affero General Public License, version 3,
* 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
* 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/>
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*
*/
namespace OCA\Files_Sharing;
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use OC\Files\Cache\Wrapper\CacheJail;
use OCP\Files\Cache\ICacheEntry;
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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
*/
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private $storage;
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/**
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* @var IStorage
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*/
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private $sourceStorage;
/**
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* @var ICacheEntry
*/
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private $sourceRootInfo;
/**
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* @var \OCP\Files\Cache\ICache
*/
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private $sourceCache;
private $rootUnchanged = true;
/**
* @param \OCA\Files_Sharing\SharedStorage $storage
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* @param IStorage $sourceStorage
* @param ICacheEntry $sourceRootInfo
*/
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public function __construct($storage, IStorage $sourceStorage, ICacheEntry $sourceRootInfo) {
$this->storage = $storage;
$this->sourceStorage = $sourceStorage;
$this->sourceRootInfo = $sourceRootInfo;
$this->sourceCache = $sourceStorage->getCache();
parent::__construct(
$this->sourceCache,
$this->sourceRootInfo->getPath()
);
}
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public function getNumericStorageId() {
if (isset($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, $targetPath);
}
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protected function formatCacheEntry($entry) {
$path = isset($entry['path']) ? $entry['path'] : '';
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$entry = parent::formatCacheEntry($entry);
$sharePermissions = $this->storage->getPermissions($path);
if (isset($entry['permissions'])) {
$entry['permissions'] &= $sharePermissions;
} else {
$entry['permissions'] = $sharePermissions;
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}
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$entry['uid_owner'] = $this->storage->getOwner($path);
$entry['displayname_owner'] = \OC_User::getDisplayName($entry['uid_owner']);
if ($path === '') {
$entry['is_share_mount_point'] = true;
}
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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
}
}