'icons/file',
'Sabre_DAV_ICollection' => 'icons/collection',
'Sabre_DAVACL_IPrincipal' => 'icons/principal',
'Sabre_CalDAV_ICalendar' => 'icons/calendar',
'Sabre_CardDAV_IAddressBook' => 'icons/addressbook',
'Sabre_CardDAV_ICard' => 'icons/card',
);
/**
* The file extension used for all icons
*
* @var string
*/
public $iconExtension = '.png';
/**
* reference to server class
*
* @var Sabre_DAV_Server
*/
protected $server;
/**
* enablePost turns on the 'actions' panel, which allows people to create
* folders and upload files straight from a browser.
*
* @var bool
*/
protected $enablePost = true;
/**
* By default the browser addon will generate a favicon and other images.
* To turn this off, set this property to false.
*
* @var bool
*/
protected $enableAssets = true;
/**
* Creates the object.
*
* By default it will allow file creation and uploads.
* Specify the first argument as false to disable this
*
* @param bool $enablePost
* @param bool $enableAssets
*/
public function __construct($enablePost=true, $enableAssets = true) {
$this->enablePost = $enablePost;
$this->enableAssets = $enableAssets;
}
/**
* Initializes the addon and subscribes to events
*
* @param Sabre_DAV_Server $server
* @return void
*/
public function initialize(Sabre_DAV_Server $server) {
$this->server = $server;
$this->server->subscribeEvent('beforeMethod',array($this,'httpGetInterceptor'));
$this->server->subscribeEvent('onHTMLActionsPanel', array($this, 'htmlActionsPanel'),200);
if ($this->enablePost) $this->server->subscribeEvent('unknownMethod',array($this,'httpPOSTHandler'));
}
/**
* This method intercepts GET requests to collections and returns the html
*
* @param string $method
* @param string $uri
* @return bool
*/
public function httpGetInterceptor($method, $uri) {
if ($method !== 'GET') return true;
// We're not using straight-up $_GET, because we want everything to be
// unit testable.
$getVars = array();
parse_str($this->server->httpRequest->getQueryString(), $getVars);
if (isset($getVars['sabreAction']) && $getVars['sabreAction'] === 'asset' && isset($getVars['assetName'])) {
$this->serveAsset($getVars['assetName']);
return false;
}
try {
$node = $this->server->tree->getNodeForPath($uri);
} catch (Sabre_DAV_Exception_NotFound $e) {
// We're simply stopping when the file isn't found to not interfere
// with other addons.
return;
}
if ($node instanceof Sabre_DAV_IFile)
return;
$this->server->httpResponse->sendStatus(200);
$this->server->httpResponse->setHeader('Content-Type','text/html; charset=utf-8');
$this->server->httpResponse->sendBody(
$this->generateDirectoryIndex($uri)
);
return false;
}
/**
* Handles POST requests for tree operations.
*
* @param string $method
* @param string $uri
* @return bool
*/
public function httpPOSTHandler($method, $uri) {
if ($method!='POST') return;
$contentType = $this->server->httpRequest->getHeader('Content-Type');
list($contentType) = explode(';', $contentType);
if ($contentType !== 'application/x-www-form-urlencoded' &&
$contentType !== 'multipart/form-data') {
return;
}
$postVars = $this->server->httpRequest->getPostVars();
if (!isset($postVars['sabreAction']))
return;
if ($this->server->broadcastEvent('onBrowserPostAction', array($uri, $postVars['sabreAction'], $postVars))) {
switch($postVars['sabreAction']) {
case 'mkcol' :
if (isset($postVars['name']) && trim($postVars['name'])) {
// Using basename() because we won't allow slashes
list(, $folderName) = Sabre_DAV_URLUtil::splitPath(trim($postVars['name']));
$this->server->createDirectory($uri . '/' . $folderName);
}
break;
case 'put' :
if ($_FILES) $file = current($_FILES);
else break;
list(, $newName) = Sabre_DAV_URLUtil::splitPath(trim($file['name']));
if (isset($postVars['name']) && trim($postVars['name']))
$newName = trim($postVars['name']);
// Making sure we only have a 'basename' component
list(, $newName) = Sabre_DAV_URLUtil::splitPath($newName);
if (is_uploaded_file($file['tmp_name'])) {
$this->server->createFile($uri . '/' . $newName, fopen($file['tmp_name'],'r'));
}
break;
}
}
$this->server->httpResponse->setHeader('Location',$this->server->httpRequest->getUri());
$this->server->httpResponse->sendStatus(302);
return false;
}
/**
* Escapes a string for html.
*
* @param string $value
* @return string
*/
public function escapeHTML($value) {
return htmlspecialchars($value,ENT_QUOTES,'UTF-8');
}
/**
* Generates the html directory index for a given url
*
* @param string $path
* @return string
*/
public function generateDirectoryIndex($path) {
$version = '';
if (Sabre_DAV_Server::$exposeVersion) {
$version = Sabre_DAV_Version::VERSION ."-". Sabre_DAV_Version::STABILITY;
}
$html = "
Index for " . $this->escapeHTML($path) . "/ - SabreDAV " . $version . "
";
if ($this->enableAssets) {
$html.='';
}
$html .= "
Generated by SabreDAV " . $version . " (c)2007-2012 http://code.google.com/p/sabredav/
";
return $html;
}
/**
* This method is used to generate the 'actions panel' output for
* collections.
*
* This specifically generates the interfaces for creating new files, and
* creating new directories.
*
* @param Sabre_DAV_INode $node
* @param mixed $output
* @return void
*/
public function htmlActionsPanel(Sabre_DAV_INode $node, &$output) {
if (!$node instanceof Sabre_DAV_ICollection)
return;
// We also know fairly certain that if an object is a non-extended
// SimpleCollection, we won't need to show the panel either.
if (get_class($node)==='Sabre_DAV_SimpleCollection')
return;
$output.= '
';
}
/**
* This method takes a path/name of an asset and turns it into url
* suiteable for http access.
*
* @param string $assetName
* @return string
*/
protected function getAssetUrl($assetName) {
return $this->server->getBaseUri() . '?sabreAction=asset&assetName=' . urlencode($assetName);
}
/**
* This method returns a local pathname to an asset.
*
* @param string $assetName
* @return string
*/
protected function getLocalAssetPath($assetName) {
// Making sure people aren't trying to escape from the base path.
$assetSplit = explode('/', $assetName);
if (in_array('..',$assetSplit)) {
throw new Sabre_DAV_Exception('Incorrect asset path');
}
$path = __DIR__ . '/assets/' . $assetName;
return $path;
}
/**
* This method reads an asset from disk and generates a full http response.
*
* @param string $assetName
* @return void
*/
protected function serveAsset($assetName) {
$assetPath = $this->getLocalAssetPath($assetName);
if (!file_exists($assetPath)) {
throw new Sabre_DAV_Exception_NotFound('Could not find an asset with this name');
}
// Rudimentary mime type detection
switch(strtolower(substr($assetPath,strpos($assetPath,'.')+1))) {
case 'ico' :
$mime = 'image/vnd.microsoft.icon';
break;
case 'png' :
$mime = 'image/png';
break;
default:
$mime = 'application/octet-stream';
break;
}
$this->server->httpResponse->setHeader('Content-Type', $mime);
$this->server->httpResponse->setHeader('Content-Length', filesize($assetPath));
$this->server->httpResponse->setHeader('Cache-Control', 'public, max-age=1209600');
$this->server->httpResponse->sendStatus(200);
$this->server->httpResponse->sendBody(fopen($assetPath,'r'));
}
}