Receive Message

Receiving a SAML message from the HTTP request with the SAML HTTP POST or Redirect binding, in Light Saml is done with the Binding set of classes. The BindingFactory can detect the binding type for the given HTTP request and instantiate corresponding Binding class, HttpPostBinding or HttpRedirectBinding, capable of receiving the SAML message (AuthnRequest, Response...).

First you create Symfony's HttpFoundation Request, instantiate BindingFactory with that request and get the actual binding, and finally call the binding receive() method, that will return deserialized SAML document from the HTTP Request.

<?php
$request = \Symfony\Component\HttpFoundation\Request::createFromGlobals();

$bindingFactory = new \LightSaml\Binding\BindingFactory();
$binding = $bindingFactory->getBindingByRequest($request);

$messageContext = new \LightSaml\Context\Profile\MessageContext();
/** @var \LightSaml\Model\Protocol\Response $response */
$response = $binding->receive($request, $messageContext);

print $response->getID();

Receiving of other SAML documents/messages, like Response is done in the same way. Return value of the Binding::receive() depends on the actual message being sent, and so far AuthnRequest, Response, LogoutResponse, and LogoutRequest are supported and implemented.