/**
* Serves HEAD requests.
*
* The method receives a {@link ezcWebdavHeadRequest} object containing all
* relevant information obout the clients request and will return an {@link
* ezcWebdavErrorResponse} instance on error or an instance of {@link
* ezcWebdavHeadResponse} on success.
*
* @param ezcWebdavHeadRequest $request
* @return ezcWebdavResponse
*/
public function head(ezcWebdavHeadRequest $request)
{
$source = $request->requestUri;
// Check authorization
if (!ezcWebdavServer::getInstance()->isAuthorized($source, $request->getHeader('Authorization'))) {
return $this->createUnauthorizedResponse($source, $request->getHeader('Authorization'));
}
// Check if resource is available
if (!$this->nodeExists($source)) {
return new ezcWebdavErrorResponse(ezcWebdavResponse::STATUS_404, $source);
}
$res = null;
// Init
if (!$this->isCollection($source)) {
// Just deliver file without contents
$res = new ezcWebdavHeadResponse(new ezcWebdavResource($source, $this->getAllProperties($source)));
} else {
// Just deliver collection without children
$res = new ezcWebdavHeadResponse(new ezcWebdavCollection($source, $this->getAllProperties($source)));
}
// Add ETag header
$res->setHeader('ETag', $this->getETag($source));
// Deliver response
return $res;
}
