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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 Lukas Reschke <[email protected]> |
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* @author Thomas Müller <[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 OCA\DAV\Connector\Sabre; |
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use Sabre\CalDAV\Principal\User; |
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use Sabre\DAV\Exception\NotFound; |
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use Sabre\DAV\IFile; |
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use Sabre\DAV\INode; |
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use \Sabre\DAV\PropFind; |
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use \Sabre\DAV\PropPatch; |
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use Sabre\DAVACL\Exception\NeedPrivileges; |
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use \Sabre\HTTP\RequestInterface; |
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use \Sabre\HTTP\ResponseInterface; |
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use Sabre\HTTP\URLUtil; |
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/** |
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* Class DavAclPlugin is a wrapper around \Sabre\DAVACL\Plugin that returns 404 |
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* responses in case the resource to a response has been forbidden instead of |
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* a 403. This is used to prevent enumeration of valid resources. |
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* |
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* @see https://github.com/owncloud/core/issues/22578 |
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* @package OCA\DAV\Connector\Sabre |
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*/ |
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class DavAclPlugin extends \Sabre\DAVACL\Plugin { |
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public function __construct() { |
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$this->hideNodesFromListings = true; |
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} |
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function checkPrivileges($uri, $privileges, $recursion = self::R_PARENT, $throwExceptions = true) { |
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$access = parent::checkPrivileges($uri, $privileges, $recursion, false); |
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if($access === false && $throwExceptions) { |
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/** @var INode $node */ |
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$node = $this->server->tree->getNodeForPath($uri); |
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switch(get_class($node)) { |
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case 'OCA\DAV\CardDAV\AddressBook': |
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$type = 'Addressbook'; |
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break; |
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default: |
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$type = 'Node'; |
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break; |
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} |
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throw new NotFound( |
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sprintf( |
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"%s with name '%s' could not be found", |
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$type, |
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$node->getName() |
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) |
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); |
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} |
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return $access; |
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} |
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public function propFind(PropFind $propFind, INode $node) { |
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// If the node is neither readable nor writable then fail unless its of |
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// the standard user-principal |
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if(!($node instanceof User)) { |
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$path = $propFind->getPath(); |
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$readPermissions = $this->checkPrivileges($path, '{DAV:}read', self::R_PARENT, false); |
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$writePermissions = $this->checkPrivileges($path, '{DAV:}write', self::R_PARENT, false); |
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if ($readPermissions === false && $writePermissions === false) { |
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$this->checkPrivileges($path, '{DAV:}read', self::R_PARENT, true); |
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$this->checkPrivileges($path, '{DAV:}write', self::R_PARENT, true); |
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} |
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} |
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return parent::propFind($propFind, $node); |
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} |
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} |
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nextcloud /
server
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Adding explicit visibility (
private,protected, orpublic) is generally recommend to communicate to other developers how, and from where this method is intended to be used.