nextcloud/lib/private/encryption/file.php

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<?php
/**
* @author Björn Schießle <schiessle@owncloud.com>
* @author Thomas Müller <thomas.mueller@tmit.eu>
*
* @copyright Copyright (c) 2015, ownCloud, Inc.
* @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 OC\Encryption;
class File implements \OCP\Encryption\IFile {
/** @var Util */
protected $util;
public function __construct(Util $util) {
$this->util = $util;
}
/**
* get list of users with access to the file
*
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* @param string $path to the file
* @return array ['users' => $uniqueUserIds, 'public' => $public]
*/
public function getAccessList($path) {
// Make sure that a share key is generated for the owner too
list($owner, $ownerPath) = $this->util->getUidAndFilename($path);
// always add owner to the list of users with access to the file
$userIds = array($owner);
if (!$this->util->isFile($owner . '/' . $ownerPath)) {
return array('users' => $userIds, 'public' => false);
}
$ownerPath = substr($ownerPath, strlen('/files'));
$ownerPath = $this->util->stripPartialFileExtension($ownerPath);
// Find out who, if anyone, is sharing the file
$result = \OCP\Share::getUsersSharingFile($ownerPath, $owner);
$userIds = \array_merge($userIds, $result['users']);
$public = $result['public'] || $result['remote'];
// check if it is a group mount
if (\OCP\App::isEnabled("files_external")) {
$mounts = \OC_Mount_Config::getSystemMountPoints();
foreach ($mounts as $mount) {
if ($mount['mountpoint'] == substr($ownerPath, 1, strlen($mount['mountpoint']))) {
$mountedFor = $this->util->getUserWithAccessToMountPoint($mount['applicable']['users'], $mount['applicable']['groups']);
$userIds = array_merge($userIds, $mountedFor);
}
}
}
// Remove duplicate UIDs
$uniqueUserIds = array_unique($userIds);
return array('users' => $uniqueUserIds, 'public' => $public);
}
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}