150 lines
4.7 KiB
PHP
150 lines
4.7 KiB
PHP
<?php
|
|
/**
|
|
* @copyright Copyright (c) 2016, ownCloud, Inc.
|
|
*
|
|
* @author Jörn Friedrich Dreyer <jfd@butonic.de>
|
|
* @author Morris Jobke <hey@morrisjobke.de>
|
|
* @author Robin Appelman <robin@icewind.nl>
|
|
* @author Robin McCorkell <robin@mccorkell.me.uk>
|
|
* @author Stefan Weil <sw@weilnetz.de>
|
|
*
|
|
* @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\Files\Storage\Wrapper;
|
|
|
|
use OC\Files\Cache\Wrapper\CachePermissionsMask;
|
|
use OCP\Constants;
|
|
|
|
/**
|
|
* Mask the permissions of a storage
|
|
*
|
|
* This can be used to restrict update, create, delete and/or share permissions of a storage
|
|
*
|
|
* Note that the read permissions can't be masked
|
|
*/
|
|
class PermissionsMask extends Wrapper {
|
|
/**
|
|
* @var int the permissions bits we want to keep
|
|
*/
|
|
private $mask;
|
|
|
|
/**
|
|
* @param array $arguments ['storage' => $storage, 'mask' => $mask]
|
|
*
|
|
* $storage: The storage the permissions mask should be applied on
|
|
* $mask: The permission bits that should be kept, a combination of the \OCP\Constant::PERMISSION_ constants
|
|
*/
|
|
public function __construct($arguments) {
|
|
parent::__construct($arguments);
|
|
$this->mask = $arguments['mask'];
|
|
}
|
|
|
|
private function checkMask($permissions) {
|
|
return ($this->mask & $permissions) === $permissions;
|
|
}
|
|
|
|
public function isUpdatable($path) {
|
|
return $this->checkMask(Constants::PERMISSION_UPDATE) and parent::isUpdatable($path);
|
|
}
|
|
|
|
public function isCreatable($path) {
|
|
return $this->checkMask(Constants::PERMISSION_CREATE) and parent::isCreatable($path);
|
|
}
|
|
|
|
public function isDeletable($path) {
|
|
return $this->checkMask(Constants::PERMISSION_DELETE) and parent::isDeletable($path);
|
|
}
|
|
|
|
public function isSharable($path) {
|
|
return $this->checkMask(Constants::PERMISSION_SHARE) and parent::isSharable($path);
|
|
}
|
|
|
|
public function getPermissions($path) {
|
|
return $this->storage->getPermissions($path) & $this->mask;
|
|
}
|
|
|
|
public function rename($path1, $path2) {
|
|
$p = strpos($path1, $path2);
|
|
if ($p === 0) {
|
|
$part = substr($path1, strlen($path2));
|
|
//This is a rename of the transfer file to the original file
|
|
if (strpos($part, '.ocTransferId') === 0) {
|
|
return $this->checkMask(Constants::PERMISSION_CREATE) and parent::rename($path1, $path2);
|
|
}
|
|
}
|
|
return $this->checkMask(Constants::PERMISSION_UPDATE) and parent::rename($path1, $path2);
|
|
}
|
|
|
|
public function copy($path1, $path2) {
|
|
return $this->checkMask(Constants::PERMISSION_CREATE) and parent::copy($path1, $path2);
|
|
}
|
|
|
|
public function touch($path, $mtime = null) {
|
|
$permissions = $this->file_exists($path) ? Constants::PERMISSION_UPDATE : Constants::PERMISSION_CREATE;
|
|
return $this->checkMask($permissions) and parent::touch($path, $mtime);
|
|
}
|
|
|
|
public function mkdir($path) {
|
|
return $this->checkMask(Constants::PERMISSION_CREATE) and parent::mkdir($path);
|
|
}
|
|
|
|
public function rmdir($path) {
|
|
return $this->checkMask(Constants::PERMISSION_DELETE) and parent::rmdir($path);
|
|
}
|
|
|
|
public function unlink($path) {
|
|
return $this->checkMask(Constants::PERMISSION_DELETE) and parent::unlink($path);
|
|
}
|
|
|
|
public function file_put_contents($path, $data) {
|
|
$permissions = $this->file_exists($path) ? Constants::PERMISSION_UPDATE : Constants::PERMISSION_CREATE;
|
|
return $this->checkMask($permissions) ? parent::file_put_contents($path, $data) : false;
|
|
}
|
|
|
|
public function fopen($path, $mode) {
|
|
if ($mode === 'r' or $mode === 'rb') {
|
|
return parent::fopen($path, $mode);
|
|
} else {
|
|
$permissions = $this->file_exists($path) ? Constants::PERMISSION_UPDATE : Constants::PERMISSION_CREATE;
|
|
return $this->checkMask($permissions) ? parent::fopen($path, $mode) : false;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* get a cache instance for the storage
|
|
*
|
|
* @param string $path
|
|
* @param \OC\Files\Storage\Storage (optional) the storage to pass to the cache
|
|
* @return \OC\Files\Cache\Cache
|
|
*/
|
|
public function getCache($path = '', $storage = null) {
|
|
if (!$storage) {
|
|
$storage = $this;
|
|
}
|
|
$sourceCache = parent::getCache($path, $storage);
|
|
return new CachePermissionsMask($sourceCache, $this->mask);
|
|
}
|
|
|
|
public function getMetaData($path) {
|
|
$data = parent::getMetaData($path);
|
|
|
|
if ($data && isset($data['permissions'])) {
|
|
$data['permissions'] = $data['permissions'] & $this->mask;
|
|
}
|
|
return $data;
|
|
}
|
|
}
|