129 lines
3.8 KiB
PHP
129 lines
3.8 KiB
PHP
<?php
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/**
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* @copyright Copyright (c) 2016, ownCloud, Inc.
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*
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* @author Björn Schießle <bjoern@schiessle.org>
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* @author Christoph Wurst <christoph@winzerhof-wurst.at>
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* @author Joas Schilling <coding@schilljs.com>
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* @author Roeland Jago Douma <roeland@famdouma.nl>
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* @author Thomas Müller <thomas.mueller@tmit.eu>
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* @author Vincent Petry <pvince81@owncloud.com>
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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
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* it under the terms of the GNU Affero General Public License, version 3,
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* 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
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License, version 3,
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* along with this program. If not, see <http://www.gnu.org/licenses/>
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*
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*/
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namespace OC\Encryption;
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use OC\Cache\CappedMemoryCache;
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use OCP\Files\IRootFolder;
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use OCP\Files\NotFoundException;
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use OCP\Share\IManager;
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class File implements \OCP\Encryption\IFile {
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/** @var Util */
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protected $util;
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/** @var IRootFolder */
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private $rootFolder;
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/** @var IManager */
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private $shareManager;
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/**
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* cache results of already checked folders
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*
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* @var array
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*/
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protected $cache;
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public function __construct(Util $util,
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IRootFolder $rootFolder,
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IManager $shareManager) {
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$this->util = $util;
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$this->cache = new CappedMemoryCache();
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$this->rootFolder = $rootFolder;
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$this->shareManager = $shareManager;
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}
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/**
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* get list of users with access to the file
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*
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* @param string $path to the file
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* @return array ['users' => $uniqueUserIds, 'public' => $public]
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*/
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public function getAccessList($path) {
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// Make sure that a share key is generated for the owner too
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list($owner, $ownerPath) = $this->util->getUidAndFilename($path);
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// always add owner to the list of users with access to the file
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$userIds = [$owner];
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if (!$this->util->isFile($owner . '/' . $ownerPath)) {
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return ['users' => $userIds, 'public' => false];
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}
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$ownerPath = substr($ownerPath, strlen('/files'));
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$userFolder = $this->rootFolder->getUserFolder($owner);
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try {
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$file = $userFolder->get($ownerPath);
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} catch (NotFoundException $e) {
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$file = null;
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}
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$ownerPath = $this->util->stripPartialFileExtension($ownerPath);
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// first get the shares for the parent and cache the result so that we don't
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// need to check all parents for every file
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$parent = dirname($ownerPath);
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$parentNode = $userFolder->get($parent);
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if (isset($this->cache[$parent])) {
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$resultForParents = $this->cache[$parent];
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} else {
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$resultForParents = $this->shareManager->getAccessList($parentNode);
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$this->cache[$parent] = $resultForParents;
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}
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$userIds = array_merge($userIds, $resultForParents['users']);
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$public = $resultForParents['public'] || $resultForParents['remote'];
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// Find out who, if anyone, is sharing the file
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if ($file !== null) {
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$resultForFile = $this->shareManager->getAccessList($file, false);
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$userIds = array_merge($userIds, $resultForFile['users']);
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$public = $resultForFile['public'] || $resultForFile['remote'] || $public;
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}
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// check if it is a group mount
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if (\OCP\App::isEnabled("files_external")) {
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$mounts = \OC_Mount_Config::getSystemMountPoints();
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foreach ($mounts as $mount) {
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if ($mount['mountpoint'] == substr($ownerPath, 1, strlen($mount['mountpoint']))) {
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$mountedFor = $this->util->getUserWithAccessToMountPoint($mount['applicable']['users'], $mount['applicable']['groups']);
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$userIds = array_merge($userIds, $mountedFor);
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}
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}
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}
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// Remove duplicate UIDs
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$uniqueUserIds = array_unique($userIds);
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return ['users' => $uniqueUserIds, 'public' => $public];
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}
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}
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