99 lines
2.4 KiB
PHP
99 lines
2.4 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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* @var \OC\Files\View
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*/
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private $fileView;
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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->fileView = $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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*/
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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 string $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 = $this->fileView->filesize($filePath);
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if ($actual != $expected) {
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$this->fileView->unlink($filePath);
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throw new \Sabre\DAV\Exception\BadRequest('expected filesize ' . $expected . ' got ' . $actual);
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}
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}
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/**
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* @return string
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*/
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public function getLength() {
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$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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