/// <summary>
/// Send an authentication request to the IDP.
/// </summary>
/// <param name="context">The context.</param>
private void SendRequest(HttpContext context, Saml2Configuration config)
{
// See if the "ReturnUrl" - parameter is set.
var returnUrl = context.Request.QueryString["ReturnUrl"];
if (!string.IsNullOrEmpty(returnUrl) && context.Session != null) {
context.Session["RedirectUrl"] = returnUrl;
}
var isRedirected = false;
var selectionUtil = new IdpSelectionUtil(Logger);
var idp = selectionUtil.RetrieveIDP(context.Request.Params, context.Request.QueryString, config, s => { context.Response.Redirect(s); isRedirected = true; });
if (isRedirected) return;
if (idp == null) {
// Display a page to the user where she can pick the IDP
Logger.DebugFormat(TraceMessages.IdentityProviderRedirect);
var page = new SelectSaml20IDP();
page.ProcessRequest(context);
return;
}
var authnRequest = Saml20AuthnRequest.GetDefault(config);
TransferClient(idp, authnRequest, context, config);
}
public override string BuildRedirectUrl()
{
string rc = null;
var logger = SAML2.Logging.LoggerProvider.LoggerFor(typeof(SamlMessage));
var selectionUtil = new IdpSelectionUtil(logger);
var allparams = BuildParams(form, context.Request.Query);
var idp = selectionUtil.RetrieveIDP(allparams, BuildParams(context.Request.Query), config, s => rc = s);
if (rc != null) return rc; // IDP selection screen
if (idp == null) {
// Display a page to the user where she can pick the IDP
logger.DebugFormat(TraceMessages.IdentityProviderRedirect);
throw new NotImplementedException("Selection of IDP not yet done (probably need a map call on middleware extension method)");
//var page = new SelectSaml20IDP();
//page.ProcessRequest(context);
//return;
}
var authnRequest = Saml20AuthnRequest.GetDefault(config);
return AuthnRequestForIdp(idp, authnRequest, context, config);
}
