/// <summary>
/// Creates an artifact for the LogoutRequest and redirects the user to the IdP.
/// </summary>
/// <param name="destination">The destination of the request.</param>
/// <param name="request">The logout request.</param>
/// <param name="relayState">The query string relay state value to add to the communication</param>
public void RedirectFromLogout(IdentityProviderEndpointElement destination, Saml20LogoutRequest request, string relayState)
{
var config = Saml2Config.GetConfig();
var index = (short)config.ServiceProvider.Endpoints.LogoutEndpoint.Index;
var doc = request.GetXml();
XmlSignatureUtils.SignDocument(doc, request.Request.Id);
ArtifactRedirect(destination, index, doc, relayState);
}
/// <summary>
/// Creates an artifact and redirects the user to the IdP
/// </summary>
/// <param name="destination">The destination of the request.</param>
/// <param name="request">The authentication request.</param>
public void RedirectFromLogin(IdentityProviderEndpointElement destination, Saml20AuthnRequest request)
{
var config = Saml2Config.GetConfig();
var index = (short)config.ServiceProvider.Endpoints.SignOnEndpoint.Index;
var doc = request.GetXml();
XmlSignatureUtils.SignDocument(doc, request.Request.Id);
ArtifactRedirect(destination, index, doc, Context.Request.Params["relayState"]);
}
private IdentityProviderEndpoint ToIdentityProviderEndpoint(IdentityProviderEndpointElement value)
{
if (value == null)
{
return(null);
}
return(new IdentityProviderEndpoint
{
Binding = value.Binding,
ForceProtocolBinding = value.ForceProtocolBinding,
TokenAccessor = value.TokenAccessor,
Type = value.Type,
Url = value.Url
});
}
/// <summary>
/// Determine which endpoint to use based on the protocol defaults, configuration data and metadata.
/// </summary>
/// <param name="defaultBinding">The binding to use if none has been specified in the configuration and the metadata allows all bindings.</param>
/// <param name="config">The endpoint as described in the configuration. May be null.</param>
/// <param name="metadata">A list of endpoints of the given type (e.g. SSO or SLO) that the metadata contains.</param>
/// <returns>The <see cref="IdentityProviderElement"/>.</returns>
internal static IdentityProviderEndpointElement DetermineEndpointConfiguration(BindingType defaultBinding, IdentityProviderEndpointElement config, List <IdentityProviderEndpointElement> metadata)
{
var result = new IdentityProviderEndpointElement {
Binding = defaultBinding
};
// Determine which binding to use.
if (config != null)
{
result.Binding = config.Binding;
}
else
{
// Verify that the metadata allows the default binding.
var allowed = metadata.Exists(el => el.Binding == defaultBinding);
if (!allowed)
{
result.Binding = result.Binding == BindingType.Post
? BindingType.Redirect
: BindingType.Post;
}
}
if (config != null && !string.IsNullOrEmpty(config.Url))
{
result.Url = config.Url;
}
else
{
var endpoint = metadata.Find(el => el.Binding == result.Binding);
if (endpoint == null)
{
throw new ConfigurationErrorsException(string.Format("No IdentityProvider supporting SAML binding {0} found in metadata", result.Binding));
}
result.Url = endpoint.Url;
}
return(result);
}
/// <summary>
/// Handles all artifact creations and redirects.
/// </summary>
/// <param name="destination">The destination.</param>
/// <param name="localEndpointIndex">Index of the local endpoint.</param>
/// <param name="signedSamlMessage">The signed SAML message.</param>
/// <param name="relayState">The query string relay state value to add to the communication</param>
private void ArtifactRedirect(IdentityProviderEndpointElement destination, short localEndpointIndex, XmlDocument signedSamlMessage, string relayState)
{
Logger.DebugFormat(TraceMessages.ArtifactRedirectReceived, signedSamlMessage.OuterXml);
var config = Saml2Config.GetConfig();
var sourceId = config.ServiceProvider.Id;
var sourceIdHash = ArtifactUtil.GenerateSourceIdHash(sourceId);
var messageHandle = ArtifactUtil.GenerateMessageHandle();
var artifact = ArtifactUtil.CreateArtifact(HttpArtifactBindingConstants.ArtifactTypeCode, localEndpointIndex, sourceIdHash, messageHandle);
Context.Cache.Insert(artifact, signedSamlMessage, null, DateTime.Now.AddMinutes(1), Cache.NoSlidingExpiration);
var destinationUrl = destination.Url + "?" + HttpArtifactBindingConstants.ArtifactQueryStringName + "=" + HttpUtility.UrlEncode(artifact);
if (!string.IsNullOrEmpty(relayState))
{
destinationUrl += "&relayState=" + relayState;
}
Logger.DebugFormat(TraceMessages.ArtifactCreated, artifact);
Context.Response.Redirect(destinationUrl);
}
/// <summary>
/// Initializes a new instance of the <see cref="HttpPostBindingBuilder"/> class.
/// </summary>
/// <param name="endpoint">The IdP endpoint that messages will be sent to.</param>
public HttpPostBindingBuilder(IdentityProviderEndpointElement endpoint)
{
_destinationEndpoint = endpoint;
Action = SamlActionType.SAMLRequest;
RelayState = string.Empty;
}
private IdentityProviderEndpoint ToIdentityProviderEndpoint(IdentityProviderEndpointElement value)
{
if (value == null) return null;
return new IdentityProviderEndpoint
{
Binding = value.Binding,
ForceProtocolBinding = value.ForceProtocolBinding,
TokenAccessor = value.TokenAccessor,
Type = value.Type,
Url = value.Url
};
}
/// <summary>
/// Creates an artifact for the LogoutRequest and redirects the user to the IdP.
/// </summary>
/// <param name="destination">The destination of the request.</param>
/// <param name="request">The logout request.</param>
public void RedirectFromLogout(IdentityProviderEndpointElement destination, Saml20LogoutRequest request)
{
RedirectFromLogout(destination, request, Context.Request.Params["relayState"]);
}
