public LogoutResponseFactoryTests()
{
_logoutResponseFactory = new LogoutResponseFactory();
}
/// <summary>
/// SAML2 Logout.
///
/// The SAML2 logout is complicated as there are two main scenarios.
///
/// Scenario 1.
///
/// It's this application that triggers the logout.
/// The application sends the LogoutRequest to the server
/// and the server is supposed to answer with the LogoutResponse,
/// sent to this endpoint (assuming the /account/logout is
/// registered as the logout endpoint in the IdP).
///
/// In this app the LogoutRequest sending is handled in the HomeController
/// (home/logout)
///
/// Scenario 2.
///
/// Another application triggers the logout. The server
/// gets the LogoutRequest from this another app and
/// sends LogoutRequest here. This app is supposed to
/// answer with the LogoutResponse.
///
/// Both scenarios means that to handle logouts correctly,
/// the app has to be able to both send and receive
/// both LogoutRequest and LogoutResponse
/// </summary>
public ActionResult Logout()
{
var sam2 = new Saml2AuthenticationModule();
var idpCertificate = new ClientCertificateProvider().GetIdPCertificate();
if (sam2.IsLogoutRequest(this.Request) ||
sam2.IsLogoutResponse(this.Request)
)
{
// first check if this is a LogoutResponse from the IdP
var logoutResponse = new LogoutResponseFactory().From(this.Request);
if (logoutResponse != null)
{
var result = sam2.MessageSigner.Validate(logoutResponse, idpCertificate);
if (!result)
{
throw new ValidationException("The LogoutResponse is not correctly signed with the IdP certificate");
}
}
// then check if this is a LogoutRequest from the IdP
var logoutRequest = new LogoutRequestFactory().From(this.Request);
if (logoutRequest != null)
{
var result = sam2.MessageSigner.Validate(logoutRequest, idpCertificate);
if (!result)
{
throw new ValidationException("The LogoutResponse is not correctly signed with the IdP certificate");
}
}
// both possibilities were validated
// signout can be performed
FormsAuthentication.SignOut();
// create the response in case of the LogoutRequest
if (logoutRequest != null)
{
var assertionIssuer = ConfigurationManager.AppSettings["AssertionIssuer"];
var identityProvider = ConfigurationManager.AppSettings["IdentityProvider"];
var x509Configuration = new X509Configuration()
{
SignatureCertificate = new ClientCertificateProvider().GetClientCertificate(),
IncludeKeyInfo = true,
SignatureAlgorithm = Signature.SignatureAlgorithm.SHA256
};
var requestBinding = Binding.POST;
var logoutResponseFactory = new LogoutResponseFactory();
logoutResponseFactory.Issuer = assertionIssuer;
logoutResponseFactory.Destination = identityProvider;
logoutResponseFactory.RequestBinding = requestBinding;
logoutResponseFactory.X509Configuration = x509Configuration;
// mark the response
logoutResponseFactory.InResponseTo = logoutRequest.SessionIndex;
switch (logoutResponseFactory.RequestBinding)
{
case Constants.Binding.POST:
return(Content(logoutResponseFactory.CreatePostBindingContent()));
default:
throw new ArgumentException(string.Format("The {0} logout response binding is not supported", logoutResponseFactory.RequestBinding));
}
}
}
// go back to the main page (possibly with logout
return(Redirect(FormsAuthentication.DefaultUrl));
}
public IdpInitiatedLogoutResponseHandler(LogoutResponseFactory messageFactory, IEnumerable <ISamlBindingStrategy> bindings) : base(messageFactory, bindings)
{
}