297 lines
9.4 KiB
PHP
297 lines
9.4 KiB
PHP
<?php
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/**
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* ownCloud / SabreDAV
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*
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* @author Markus Goetz
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*
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* @copyright Copyright (C) 2007-2013 Rooftop Solutions. All rights reserved.
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* @author Evert Pot (http://www.rooftopsolutions.nl/)
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* @license http://code.google.com/p/sabredav/wiki/License Modified BSD License
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*/
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/**
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* Class OC_Connector_Sabre_Server
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*
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* This class reimplements some methods from @see \Sabre\DAV\Server.
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*
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* Basically we add handling of depth: infinity.
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*
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* The right way to handle this would have been to submit a patch to the upstream project
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* and grab the corresponding version one merged.
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*
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* Due to time constrains and the limitations where we don't want to upgrade 3rdparty code in
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* this stage of the release cycle we did choose this approach.
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*
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* For ownCloud 7 we will upgrade SabreDAV and submit the patch - if needed.
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*
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* @see \Sabre\DAV\Server
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*/
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class OC_Connector_Sabre_Server extends Sabre\DAV\Server {
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/**
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* @var string
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*/
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private $overLoadedUri = null;
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/**
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* @var boolean
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*/
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private $ignoreRangeHeader = false;
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/**
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* @see \Sabre\DAV\Server
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*/
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public function __construct($treeOrNode = null) {
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parent::__construct($treeOrNode);
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self::$exposeVersion = false;
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}
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public function getRequestUri() {
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if (!is_null($this->overLoadedUri)) {
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return $this->overLoadedUri;
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}
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return parent::getRequestUri();
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}
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public function checkPreconditions($handleAsGET = false) {
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// chunked upload handling
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if (isset($_SERVER['HTTP_OC_CHUNKED'])) {
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$filePath = parent::getRequestUri();
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list($path, $name) = \Sabre\DAV\URLUtil::splitPath($filePath);
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$info = OC_FileChunking::decodeName($name);
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if (!empty($info)) {
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$filePath = $path . '/' . $info['name'];
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$this->overLoadedUri = $filePath;
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}
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}
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$result = parent::checkPreconditions($handleAsGET);
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$this->overLoadedUri = null;
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return $result;
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}
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public function getHTTPRange() {
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if ($this->ignoreRangeHeader) {
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return null;
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}
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return parent::getHTTPRange();
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}
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protected function httpGet($uri) {
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$range = $this->getHTTPRange();
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if (OC_App::isEnabled('files_encryption') && $range) {
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// encryption does not support range requests
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$this->ignoreRangeHeader = true;
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}
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return parent::httpGet($uri);
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}
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/**
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* @see \Sabre\DAV\Server
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*/
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protected function httpPropfind($uri) {
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// $xml = new \Sabre\DAV\XMLReader(file_get_contents('php://input'));
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$requestedProperties = $this->parsePropFindRequest($this->httpRequest->getBody(true));
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$depth = $this->getHTTPDepth(1);
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// The only two options for the depth of a propfind is 0 or 1
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// if ($depth!=0) $depth = 1;
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$newProperties = $this->getPropertiesForPath($uri,$requestedProperties,$depth);
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// This is a multi-status response
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$this->httpResponse->sendStatus(207);
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$this->httpResponse->setHeader('Content-Type','application/xml; charset=utf-8');
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$this->httpResponse->setHeader('Vary','Brief,Prefer');
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// Normally this header is only needed for OPTIONS responses, however..
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// iCal seems to also depend on these being set for PROPFIND. Since
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// this is not harmful, we'll add it.
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$features = array('1','3', 'extended-mkcol');
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foreach($this->plugins as $plugin) {
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$features = array_merge($features,$plugin->getFeatures());
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}
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$this->httpResponse->setHeader('DAV',implode(', ',$features));
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$prefer = $this->getHTTPPrefer();
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$minimal = $prefer['return-minimal'];
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$data = $this->generateMultiStatus($newProperties, $minimal);
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$this->httpResponse->sendBody($data);
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}
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/**
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* Small helper to support PROPFIND with DEPTH_INFINITY.
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* @param string $path
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*/
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private function addPathNodesRecursively(&$nodes, $path) {
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foreach($this->tree->getChildren($path) as $childNode) {
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$nodes[$path . '/' . $childNode->getName()] = $childNode;
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if ($childNode instanceof \Sabre\DAV\ICollection)
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$this->addPathNodesRecursively($nodes, $path . '/' . $childNode->getName());
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}
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}
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public function getPropertiesForPath($path, $propertyNames = array(), $depth = 0) {
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// if ($depth!=0) $depth = 1;
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$path = rtrim($path,'/');
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$returnPropertyList = array();
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$parentNode = $this->tree->getNodeForPath($path);
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$nodes = array(
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$path => $parentNode
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);
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if ($depth==1 && $parentNode instanceof \Sabre\DAV\ICollection) {
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foreach($this->tree->getChildren($path) as $childNode)
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$nodes[$path . '/' . $childNode->getName()] = $childNode;
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} else if ($depth == self::DEPTH_INFINITY && $parentNode instanceof \Sabre\DAV\ICollection) {
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$this->addPathNodesRecursively($nodes, $path);
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}
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// If the propertyNames array is empty, it means all properties are requested.
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// We shouldn't actually return everything we know though, and only return a
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// sensible list.
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$allProperties = count($propertyNames)==0;
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foreach($nodes as $myPath=>$node) {
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$currentPropertyNames = $propertyNames;
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$newProperties = array(
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'200' => array(),
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'404' => array(),
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);
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if ($allProperties) {
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// Default list of propertyNames, when all properties were requested.
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$currentPropertyNames = array(
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'{DAV:}getlastmodified',
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'{DAV:}getcontentlength',
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'{DAV:}resourcetype',
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'{DAV:}quota-used-bytes',
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'{DAV:}quota-available-bytes',
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'{DAV:}getetag',
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'{DAV:}getcontenttype',
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);
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}
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// If the resourceType was not part of the list, we manually add it
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// and mark it for removal. We need to know the resourcetype in order
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// to make certain decisions about the entry.
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// WebDAV dictates we should add a / and the end of href's for collections
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$removeRT = false;
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if (!in_array('{DAV:}resourcetype',$currentPropertyNames)) {
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$currentPropertyNames[] = '{DAV:}resourcetype';
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$removeRT = true;
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}
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$result = $this->broadcastEvent('beforeGetProperties',array($myPath, $node, &$currentPropertyNames, &$newProperties));
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// If this method explicitly returned false, we must ignore this
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// node as it is inaccessible.
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if ($result===false) continue;
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if (count($currentPropertyNames) > 0) {
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if ($node instanceof \Sabre\DAV\IProperties) {
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$nodeProperties = $node->getProperties($currentPropertyNames);
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// The getProperties method may give us too much,
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// properties, in case the implementor was lazy.
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//
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// So as we loop through this list, we will only take the
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// properties that were actually requested and discard the
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// rest.
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foreach($currentPropertyNames as $k=>$currentPropertyName) {
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if (isset($nodeProperties[$currentPropertyName])) {
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unset($currentPropertyNames[$k]);
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$newProperties[200][$currentPropertyName] = $nodeProperties[$currentPropertyName];
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}
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}
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}
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}
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foreach($currentPropertyNames as $prop) {
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if (isset($newProperties[200][$prop])) continue;
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switch($prop) {
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case '{DAV:}getlastmodified' : if ($node->getLastModified()) $newProperties[200][$prop] = new \Sabre\DAV\Property\GetLastModified($node->getLastModified()); break;
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case '{DAV:}getcontentlength' :
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if ($node instanceof \Sabre\DAV\IFile) {
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$size = $node->getSize();
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if (!is_null($size)) {
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$newProperties[200][$prop] = 0 + $size;
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}
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}
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break;
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case '{DAV:}quota-used-bytes' :
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if ($node instanceof \Sabre\DAV\IQuota) {
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$quotaInfo = $node->getQuotaInfo();
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$newProperties[200][$prop] = $quotaInfo[0];
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}
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break;
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case '{DAV:}quota-available-bytes' :
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if ($node instanceof \Sabre\DAV\IQuota) {
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$quotaInfo = $node->getQuotaInfo();
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$newProperties[200][$prop] = $quotaInfo[1];
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}
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break;
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case '{DAV:}getetag' : if ($node instanceof \Sabre\DAV\IFile && $etag = $node->getETag()) $newProperties[200][$prop] = $etag; break;
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case '{DAV:}getcontenttype' : if ($node instanceof \Sabre\DAV\IFile && $ct = $node->getContentType()) $newProperties[200][$prop] = $ct; break;
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case '{DAV:}supported-report-set' :
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$reports = array();
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foreach($this->plugins as $plugin) {
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$reports = array_merge($reports, $plugin->getSupportedReportSet($myPath));
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}
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$newProperties[200][$prop] = new \Sabre\DAV\Property\SupportedReportSet($reports);
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break;
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case '{DAV:}resourcetype' :
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$newProperties[200]['{DAV:}resourcetype'] = new \Sabre\DAV\Property\ResourceType();
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foreach($this->resourceTypeMapping as $className => $resourceType) {
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if ($node instanceof $className) $newProperties[200]['{DAV:}resourcetype']->add($resourceType);
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}
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break;
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}
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// If we were unable to find the property, we will list it as 404.
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if (!$allProperties && !isset($newProperties[200][$prop])) $newProperties[404][$prop] = null;
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}
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$this->broadcastEvent('afterGetProperties',array(trim($myPath,'/'),&$newProperties, $node));
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$newProperties['href'] = trim($myPath,'/');
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// Its is a WebDAV recommendation to add a trailing slash to collectionnames.
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// Apple's iCal also requires a trailing slash for principals (rfc 3744), though this is non-standard.
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if ($myPath!='' && isset($newProperties[200]['{DAV:}resourcetype'])) {
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$rt = $newProperties[200]['{DAV:}resourcetype'];
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if ($rt->is('{DAV:}collection') || $rt->is('{DAV:}principal')) {
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$newProperties['href'] .='/';
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}
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}
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// If the resourcetype property was manually added to the requested property list,
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// we will remove it again.
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if ($removeRT) unset($newProperties[200]['{DAV:}resourcetype']);
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$returnPropertyList[] = $newProperties;
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}
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return $returnPropertyList;
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}
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}
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