153 lines
4.2 KiB
PHP
153 lines
4.2 KiB
PHP
<?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 <mail@felixmoeller.de>
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* @author Morris Jobke <hey@morrisjobke.de>
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* @author Robin Appelman <robin@icewind.nl>
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* @author scambra <sergio@entrecables.com>
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* @author Thomas Müller <thomas.mueller@tmit.eu>
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* @author Vincent Petry <pvince81@owncloud.com>
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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, $newName) = URLUtil::splitPath($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 && $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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