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<?php |
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/** |
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* @copyright Copyright (c) 2016, ownCloud, Inc. |
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* |
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* @author Jörn Friedrich Dreyer <[email protected]> |
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* @author Morris Jobke <[email protected]> |
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* @author Robin Appelman <[email protected]> |
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* @author Robin McCorkell <[email protected]> |
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* @author Stefan Weil <[email protected]> |
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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\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 can't 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 $this->checkMask(Constants::PERMISSION_SHARE) and parent::isSharable($path); |
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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, $path2) { |
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$p = strpos($path1, $path2); |
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if ($p === 0) { |
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$part = substr($path1, strlen($path2)); |
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//This is a rename of the transfer file to the original file |
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if (strpos($part, '.ocTransferId') === 0) { |
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return $this->checkMask(Constants::PERMISSION_CREATE) and parent::rename($path1, $path2); |
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} |
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} |
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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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nextcloud /
server
