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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 Felix Moeller <[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 scambra <[email protected]> |
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* @author Thomas Müller <[email protected]> |
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* @author Vincent Petry <[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 OCP\Files\FileInfo; |
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use OCP\Files\StorageNotAvailableException; |
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use Sabre\DAV\Exception\InsufficientStorage; |
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use Sabre\DAV\Exception\ServiceUnavailable; |
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use Sabre\HTTP\URLUtil; |
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/** |
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* This plugin check user quota and deny creating files when they exceeds the quota. |
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* |
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* @author Sergio Cambra |
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* @copyright Copyright (C) 2012 entreCables S.L. All rights reserved. |
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* @license http://code.google.com/p/sabredav/wiki/License Modified BSD License |
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*/ |
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class QuotaPlugin extends \Sabre\DAV\ServerPlugin { |
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/** |
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* @var \OC\Files\View |
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*/ |
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private $view; |
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/** |
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* Reference to main server object |
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* |
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* @var \Sabre\DAV\Server |
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*/ |
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private $server; |
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/** |
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* @param \OC\Files\View $view |
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*/ |
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public function __construct($view) { |
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$this->view = $view; |
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} |
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/** |
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* This initializes the plugin. |
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* |
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* This function is called by \Sabre\DAV\Server, after |
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* addPlugin is called. |
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* |
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* This method should set up the requires event subscriptions. |
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* |
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* @param \Sabre\DAV\Server $server |
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* @return void |
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*/ |
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public function initialize(\Sabre\DAV\Server $server) { |
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$this->server = $server; |
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$server->on('beforeWriteContent', array($this, 'checkQuota'), 10); |
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$server->on('beforeCreateFile', array($this, 'checkQuota'), 10); |
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} |
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/** |
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* This method is called before any HTTP method and validates there is enough free space to store the file |
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* |
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* @param string $uri |
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* @throws InsufficientStorage |
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* @return bool |
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*/ |
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public function checkQuota($uri) { |
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$length = $this->getLength(); |
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if ($length) { |
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if (substr($uri, 0, 1) !== '/') { |
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$uri = '/' . $uri; |
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} |
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list($parentUri, $newName) = \Sabre\Uri\split($uri); |
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if(is_null($parentUri)) { |
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$parentUri = ''; |
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} |
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$req = $this->server->httpRequest; |
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if ($req->getHeader('OC-Chunked')) { |
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$info = \OC_FileChunking::decodeName($newName); |
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$chunkHandler = $this->getFileChunking($info); |
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// subtract the already uploaded size to see whether |
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// there is still enough space for the remaining chunks |
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$length -= $chunkHandler->getCurrentSize(); |
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// use target file name for free space check in case of shared files |
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$uri = rtrim($parentUri, '/') . '/' . $info['name']; |
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} |
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$freeSpace = $this->getFreeSpace($uri); |
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if ($freeSpace !== FileInfo::SPACE_UNKNOWN && $freeSpace !== FileInfo::SPACE_UNLIMITED && $length > $freeSpace) { |
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if (isset($chunkHandler)) { |
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$chunkHandler->cleanup(); |
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} |
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throw new InsufficientStorage(); |
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} |
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} |
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return true; |
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} |
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public function getFileChunking($info) { |
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// FIXME: need a factory for better mocking support |
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return new \OC_FileChunking($info); |
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} |
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public function getLength() { |
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$req = $this->server->httpRequest; |
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$length = $req->getHeader('X-Expected-Entity-Length'); |
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if (!is_numeric($length)) { |
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$length = $req->getHeader('Content-Length'); |
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$length = is_numeric($length) ? $length : null; |
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} |
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$ocLength = $req->getHeader('OC-Total-Length'); |
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if (is_numeric($length) && is_numeric($ocLength)) { |
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return max($length, $ocLength); |
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} |
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return $length; |
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} |
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/** |
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* @param string $uri |
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* @return mixed |
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* @throws ServiceUnavailable |
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*/ |
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public function getFreeSpace($uri) { |
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try { |
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$freeSpace = $this->view->free_space(ltrim($uri, '/')); |
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return $freeSpace; |
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} catch (StorageNotAvailableException $e) { |
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throw new ServiceUnavailable($e->getMessage()); |
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} |
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} |
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} |
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nextcloud /
server
