/**
* Create exception from Yadis response
*
* Creates an exception from a passed yadis result.
*
* @param string $request_uri The target URI for the failed
* request
* @param Auth_Yadis_HTTPResponse $result The result of the failed
* request
*
* @return OMB_RemoteServiceException A new exception
*/
public static function fromYadis($request_uri, $result)
{
if ($result->status == 200) {
$err = 'Got wrong response ' . $result->body;
} else {
$err = 'Got error code ' . $result->status . ' with response ' . $result->body;
}
return OMB_RemoteServiceException::forRequest($request_uri, $err);
}
/**
* Perform an OMB action
*
* Executes an OMB action – as of OMB 0.1, it’s one of updateProfile and
* postNotice.
*
* @param string $action_uri The URI specifying the target service
* @param array $params Additional parameters for the service call
* @param string $listenee_uri The URI identifying the local user for whom
* the action is performed
*
* @access protected
*/
protected function performOMBAction($action_uri, $params, $listenee_uri)
{
$result = $this->performAction($action_uri, $params);
if ($result->status == 403) {
/* The remote user unsubscribed us. */
$this->datastore->deleteSubscription($this->listener_uri, $listenee_uri);
} else {
if ($result->status != 200 || strpos($result->body, 'omb_version=' . OMB_VERSION) === false) {
/* The server signaled an error or sent an incorrect response. */
throw OMB_RemoteServiceException::fromYadis($action_uri, $result);
}
}
}
/**
* Handle an OMB request
*
* Performs common OMB request handling.
*
* @param string $uri The URI defining the OMB endpoint being served
*
* @access protected
*
* @return array(OAuthRequest, OMB_Profile)
*/
protected function handleOMBRequest($uri)
{
OMB_Helper::removeMagicQuotesFromRequest();
$req = OAuthRequest::from_request('POST');
$listenee = $req->get_parameter('omb_listenee');
try {
list($consumer, $token) = $this->getOAuthServer()->verify_request($req);
} catch (OAuthException $e) {
header('HTTP/1.1 403 Forbidden');
throw OMB_RemoteServiceException::forRequest($uri, 'Revoked accesstoken for ' . $listenee);
}
$version = $req->get_parameter('omb_version');
if ($version !== OMB_VERSION) {
header('HTTP/1.1 400 Bad Request');
throw OMB_RemoteServiceException::forRequest($uri, 'Wrong OMB version ' . $version);
}
$profile = $this->datastore->getProfile($listenee);
if (is_null($profile)) {
header('HTTP/1.1 400 Bad Request');
throw OMB_RemoteServiceException::forRequest($uri, 'Unknown remote profile ' . $listenee);
}
$subscribers = $this->datastore->getSubscriptions($listenee);
if (count($subscribers) === 0) {
header('HTTP/1.1 403 Forbidden');
throw OMB_RemoteServiceException::forRequest($uri, 'No subscriber for ' . $listenee);
}
return array($req, $profile);
}
