3bb793b6a7
Introduces the basic password authentication mechanism, along with a mechanism based on ownCloud credentials stored in the user session. Change to lib/private is an extension of PermissionsMask, as isSharable() override was missing. Session credentials auth mechanism now disables sharing on applied storages, as credentials will not be available.
129 lines
4.1 KiB
PHP
129 lines
4.1 KiB
PHP
<?php
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/**
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* @author Morris Jobke <hey@morrisjobke.de>
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* @author Robin Appelman <icewind@owncloud.com>
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*
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* @copyright Copyright (c) 2015, ownCloud, Inc.
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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\Files\Storage\Wrapper;
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use OC\Files\Cache\Wrapper\CachePermissionsMask;
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use OCP\Constants;
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/**
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* Mask the permissions of a storage
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*
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* This can be used to restrict update, create, delete and/or share permissions of a storage
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*
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* Note that the read permissions cant be masked
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*/
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class PermissionsMask extends Wrapper {
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/**
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* @var int the permissions bits we want to keep
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*/
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private $mask;
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/**
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* @param array $arguments ['storage' => $storage, 'mask' => $mask]
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*
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* $storage: The storage the permissions mask should be applied on
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* $mask: The permission bits that should be kept, a combination of the \OCP\Constant::PERMISSION_ constants
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*/
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public function __construct($arguments) {
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parent::__construct($arguments);
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$this->mask = $arguments['mask'];
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}
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private function checkMask($permissions) {
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return ($this->mask & $permissions) === $permissions;
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}
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public function isUpdatable($path) {
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return $this->checkMask(Constants::PERMISSION_UPDATE) and parent::isUpdatable($path);
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}
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public function isCreatable($path) {
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return $this->checkMask(Constants::PERMISSION_CREATE) and parent::isCreatable($path);
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}
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public function isDeletable($path) {
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return $this->checkMask(Constants::PERMISSION_DELETE) and parent::isDeletable($path);
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}
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public function isSharable($path) {
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return $this->checkMask(Constants::PERMISSION_SHARE) and parent::isSharable($parm);
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}
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public function getPermissions($path) {
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return $this->storage->getPermissions($path) & $this->mask;
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}
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public function rename($path1, $path2) {
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return $this->checkMask(Constants::PERMISSION_UPDATE) and parent::rename($path1, $path2);
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}
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public function copy($path1, $path2) {
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return $this->checkMask(Constants::PERMISSION_CREATE) and parent::copy($path1, $path2);
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}
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public function touch($path, $mtime = null) {
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$permissions = $this->file_exists($path) ? Constants::PERMISSION_UPDATE : Constants::PERMISSION_CREATE;
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return $this->checkMask($permissions) and parent::touch($path, $mtime);
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}
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public function mkdir($path) {
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return $this->checkMask(Constants::PERMISSION_CREATE) and parent::mkdir($path);
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}
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public function rmdir($path) {
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return $this->checkMask(Constants::PERMISSION_DELETE) and parent::rmdir($path);
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}
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public function unlink($path) {
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return $this->checkMask(Constants::PERMISSION_DELETE) and parent::unlink($path);
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}
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public function file_put_contents($path, $data) {
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$permissions = $this->file_exists($path) ? Constants::PERMISSION_UPDATE : Constants::PERMISSION_CREATE;
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return $this->checkMask($permissions) and parent::file_put_contents($path, $data);
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}
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public function fopen($path, $mode) {
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if ($mode === 'r' or $mode === 'rb') {
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return parent::fopen($path, $mode);
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} else {
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$permissions = $this->file_exists($path) ? Constants::PERMISSION_UPDATE : Constants::PERMISSION_CREATE;
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return $this->checkMask($permissions) ? parent::fopen($path, $mode) : false;
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}
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}
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/**
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* get a cache instance for the storage
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*
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* @param string $path
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* @param \OC\Files\Storage\Storage (optional) the storage to pass to the cache
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* @return \OC\Files\Cache\Cache
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*/
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public function getCache($path = '', $storage = null) {
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if (!$storage) {
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$storage = $this;
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}
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$sourceCache = parent::getCache($path, $storage);
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return new CachePermissionsMask($sourceCache, $this->mask);
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}
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}
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