107 lines
2.6 KiB
PHP
107 lines
2.6 KiB
PHP
<?php
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/**
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* Copyright (c) 2013 Thomas Müller <thomas.mueller@tmit.eu>
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* This file is licensed under the Affero General Public License version 3 or
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* later.
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* See the COPYING-README file.
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*/
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/**
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* Class OC_Connector_Sabre_AbortedUploadDetectionPlugin
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*
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* This plugin will verify if the uploaded data has been stored completely.
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* This is done by comparing the content length of the request with the file size on storage.
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*/
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class OC_Connector_Sabre_AbortedUploadDetectionPlugin extends Sabre_DAV_ServerPlugin {
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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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* is kept public to allow overwrite for unit testing
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*
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* @var \OC\Files\View
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*/
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public $fileView;
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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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*/
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public function initialize(Sabre_DAV_Server $server) {
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$this->server = $server;
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$server->subscribeEvent('afterCreateFile', array($this, 'verifyContentLength'), 10);
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$server->subscribeEvent('afterWriteContent', array($this, 'verifyContentLength'), 10);
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}
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/**
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* @param $filePath
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* @param Sabre_DAV_INode $node
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* @throws Sabre_DAV_Exception_BadRequest
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*/
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public function verifyContentLength($filePath, Sabre_DAV_INode $node = null) {
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// we should only react on PUT which is used for upload
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// e.g. with LOCK this will not work, but LOCK uses createFile() as well
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if ($this->server->httpRequest->getMethod() !== 'PUT' ) {
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return;
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}
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// ownCloud chunked upload will be handled in its own plugin
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$chunkHeader = $this->server->httpRequest->getHeader('OC-Chunked');
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if ($chunkHeader) {
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return;
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}
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// compare expected and actual size
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$expected = $this->getLength();
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if (!$expected) {
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return;
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}
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$actual = $this->getFileView()->filesize($filePath);
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if ($actual != $expected) {
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$this->getFileView()->unlink($filePath);
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throw new Sabre_DAV_Exception_BadRequest('expected filesize ' . $expected . ' got ' . $actual);
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}
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}
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/**
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* @return string
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*/
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public function getLength()
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{
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$req = $this->server->httpRequest;
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$length = $req->getHeader('X-Expected-Entity-Length');
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if (!$length) {
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$length = $req->getHeader('Content-Length');
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}
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return $length;
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}
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/**
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* @return \OC\Files\View
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*/
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public function getFileView()
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{
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if (is_null($this->fileView)) {
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// initialize fileView
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$this->fileView = \OC\Files\Filesystem::getView();
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}
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return $this->fileView;
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}
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}
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