private void TransferClient(IDPEndPoint endpoint, HttpContext context)
{
Trace.TraceMethodCalled(GetType(), "TransferClient()");
Saml20LogoutRequest request = Saml20LogoutRequest.GetDefault();
AuditLogging.AssertionId = request.ID;
AuditLogging.IdpId = endpoint.Id;
// Determine which endpoint to use from the configuration file or the endpoint metadata.
IDPEndPointElement destination =
DetermineEndpointConfiguration(SAMLBinding.REDIRECT, endpoint.SLOEndpoint, endpoint.metadata.SLOEndpoints());
request.Destination = destination.Url;
string nameIdFormat = context.Session[IDPNameIdFormat].ToString();
request.SubjectToLogOut.Format = nameIdFormat;
if (destination.Binding == SAMLBinding.POST)
{
HttpPostBindingBuilder builder = new HttpPostBindingBuilder(destination);
request.Destination = destination.Url;
request.Reason = Saml20Constants.Reasons.User;
request.SubjectToLogOut.Value = context.Session[IDPNameId].ToString();
request.SessionIndex = context.Session[IDPSessionIdKey].ToString();
XmlDocument requestDocument = request.GetXml();
XmlSignatureUtils.SignDocument(requestDocument, request.ID);
builder.Request = requestDocument.OuterXml;
if(Trace.ShouldTrace(TraceEventType.Information))
Trace.TraceData(TraceEventType.Information, string.Format(Tracing.SendLogoutRequest, "POST", endpoint.Id, requestDocument.OuterXml));
AuditLogging.logEntry(Direction.OUT, Operation.LOGOUTREQUEST, "Binding: POST");
builder.GetPage().ProcessRequest(context);
context.Response.End();
return;
}
if(destination.Binding == SAMLBinding.REDIRECT)
{
HttpRedirectBindingBuilder builder = new HttpRedirectBindingBuilder();
builder.signingKey = FederationConfig.GetConfig().SigningCertificate.GetCertificate().PrivateKey;
request.Destination = destination.Url;
request.Reason = Saml20Constants.Reasons.User;
request.SubjectToLogOut.Value = context.Session[IDPNameId].ToString();
request.SessionIndex = context.Session[IDPSessionIdKey].ToString();
builder.Request = request.GetXml().OuterXml;
string redirectUrl = destination.Url + "?" + builder.ToQuery();
if (Trace.ShouldTrace(TraceEventType.Information))
Trace.TraceData(TraceEventType.Information, string.Format(Tracing.SendLogoutRequest, "REDIRECT", endpoint.Id, redirectUrl));
AuditLogging.logEntry(Direction.OUT, Operation.LOGOUTREQUEST, "Binding: Redirect");
context.Response.Redirect(redirectUrl, true);
return;
}
if(destination.Binding == SAMLBinding.ARTIFACT)
{
if (Trace.ShouldTrace(TraceEventType.Information))
Trace.TraceData(TraceEventType.Information, string.Format(Tracing.SendLogoutRequest, "ARTIFACT", endpoint.Id, string.Empty));
request.Destination = destination.Url;
request.Reason = Saml20Constants.Reasons.User;
request.SubjectToLogOut.Value = context.Session[IDPNameId].ToString();
request.SessionIndex = context.Session[IDPSessionIdKey].ToString();
HttpArtifactBindingBuilder builder = new HttpArtifactBindingBuilder(context);
AuditLogging.logEntry(Direction.OUT, Operation.LOGOUTREQUEST, "Method: Artifact");
builder.RedirectFromLogout(destination, request, Guid.NewGuid().ToString("N"));
}
HandleError(context, Resources.BindingError);
}
private void HandleSOAP(HttpContext context, Stream inputStream)
{
Trace.TraceMethodCalled(GetType(), "HandleSOAP");
HttpArtifactBindingParser parser = new HttpArtifactBindingParser(inputStream);
HttpArtifactBindingBuilder builder = new HttpArtifactBindingBuilder(context);
SAML20FederationConfig config = SAML20FederationConfig.GetConfig();
IDPEndPoint idp = RetrieveIDPConfiguration(parser.Issuer);
AuditLogging.IdpId = idp.Id;
if (parser.IsArtifactResolve())
{
Trace.TraceData(TraceEventType.Information, Tracing.ArtifactResolveIn);
if (!parser.CheckSamlMessageSignature(idp.metadata.Keys))
{
HandleError(context, "Invalid Saml message signature");
AuditLogging.logEntry(Direction.UNDEFINED, Operation.ARTIFACTRESOLVE, "Signature could not be verified", parser.SamlMessage);
}
AuditLogging.AssertionId = parser.ArtifactResolve.ID;
AuditLogging.logEntry(Direction.IN, Operation.ARTIFACTRESOLVE, "", parser.SamlMessage);
builder.RespondToArtifactResolve(parser.ArtifactResolve);
}
else if (parser.IsArtifactResponse())
{
Trace.TraceData(TraceEventType.Information, Tracing.ArtifactResponseIn);
Status status = parser.ArtifactResponse.Status;
if (status.StatusCode.Value != Saml20Constants.StatusCodes.Success)
{
AuditLogging.logEntry(Direction.UNDEFINED, Operation.ARTIFACTRESOLVE, string.Format("Unexpected status code for artifact response: {0}, expected 'Success', msg: {1}", status.StatusCode.Value, parser.SamlMessage));
HandleError(context, status);
return;
}
if (parser.ArtifactResponse.Any.LocalName == LogoutRequest.ELEMENT_NAME)
{
if(Trace.ShouldTrace(TraceEventType.Information))
Trace.TraceData(TraceEventType.Information, string.Format(Tracing.LogoutRequest, parser.ArtifactResponse.Any.OuterXml));
//Send logoutresponse via artifact
Saml20LogoutResponse response = new Saml20LogoutResponse();
response.Issuer = config.ServiceProvider.ID;
LogoutRequest req = Serialization.DeserializeFromXmlString<LogoutRequest>(parser.ArtifactResponse.Any.OuterXml);
response.StatusCode = Saml20Constants.StatusCodes.Success;
response.InResponseTo = req.ID;
IDPEndPoint endpoint = RetrieveIDPConfiguration(context.Session[IDPLoginSessionKey].ToString());
IDPEndPointElement destination =
DetermineEndpointConfiguration(SAMLBinding.REDIRECT, endpoint.SLOEndpoint, endpoint.metadata.SLOEndpoints());
builder.RedirectFromLogout(destination, response);
}else if(parser.ArtifactResponse.Any.LocalName == LogoutResponse.ELEMENT_NAME)
{
DoLogout(context);
}
else
{
AuditLogging.logEntry(Direction.UNDEFINED, Operation.ARTIFACTRESOLVE, string.Format("Unsupported payload message in ArtifactResponse: {0}, msg: {1}", parser.ArtifactResponse.Any.LocalName, parser.SamlMessage));
HandleError(context,
string.Format("Unsupported payload message in ArtifactResponse: {0}",
parser.ArtifactResponse.Any.LocalName));
}
}
else if(parser.IsLogoutReqest())
{
if (Trace.ShouldTrace(TraceEventType.Information))
Trace.TraceData(TraceEventType.Information, string.Format(Tracing.LogoutRequest, parser.SamlMessage.OuterXml));
LogoutRequest req = parser.LogoutRequest;
//Build the response object
Saml20LogoutResponse response = new Saml20LogoutResponse();
response.Issuer = config.ServiceProvider.ID;
//response.Destination = destination.Url;
response.StatusCode = Saml20Constants.StatusCodes.Success;
response.InResponseTo = req.ID;
XmlDocument doc = response.GetXml();
XmlSignatureUtils.SignDocument(doc, response.ID);
if (doc.FirstChild is XmlDeclaration)
doc.RemoveChild(doc.FirstChild);
builder.SendResponseMessage(doc.OuterXml);
}
else
{
Status s = parser.GetStatus();
if (s != null)
{
HandleError(context, s);
}
else
{
AuditLogging.logEntry(Direction.UNDEFINED, Operation.ARTIFACTRESOLVE, string.Format("Unsupported SamlMessage element: {0}, msg: {1}", parser.SamlMessageName, parser.SamlMessage));
HandleError(context, string.Format("Unsupported SamlMessage element: {0}", parser.SamlMessageName));
}
}
}
/// <summary>
/// Transfers the client.
/// </summary>
/// <param name="idp">The identity provider.</param>
/// <param name="context">The context.</param>
private void TransferClient(IdentityProviderElement idp, HttpContext context)
{
var request = Saml20LogoutRequest.GetDefault();
// Determine which endpoint to use from the configuration file or the endpoint metadata.
var destination = DetermineEndpointConfiguration(BindingType.Redirect, idp.Endpoints.LogoutEndpoint, idp.Metadata.IDPSLOEndpoints);
request.Destination = destination.Url;
var nameIdFormat = StateService.Get <string>(IdpNameIdFormat);
request.SubjectToLogOut.Format = nameIdFormat;
// Handle POST binding
if (destination.Binding == BindingType.Post)
{
var builder = new HttpPostBindingBuilder(destination);
request.Destination = destination.Url;
request.Reason = Saml20Constants.Reasons.User;
request.SubjectToLogOut.Value = StateService.Get <string>(IdpNameId);
request.SessionIndex = StateService.Get <string>(IdpSessionIdKey);
var requestDocument = request.GetXml();
XmlSignatureUtils.SignDocument(requestDocument, request.Id);
builder.Request = requestDocument.OuterXml;
Logger.DebugFormat(TraceMessages.LogoutRequestSent, idp.Id, "POST", builder.Request);
builder.GetPage().ProcessRequest(context);
context.Response.End();
return;
}
// Handle Redirect binding
if (destination.Binding == BindingType.Redirect)
{
request.Destination = destination.Url;
request.Reason = Saml20Constants.Reasons.User;
request.SubjectToLogOut.Value = StateService.Get <string>(IdpNameId);
request.SessionIndex = StateService.Get <string>(IdpSessionIdKey);
var builder = new HttpRedirectBindingBuilder
{
Request = request.GetXml().OuterXml,
SigningKey = Saml2Config.GetConfig().ServiceProvider.SigningCertificate.GetCertificate().PrivateKey
};
var redirectUrl = destination.Url + "?" + builder.ToQuery();
Logger.DebugFormat(TraceMessages.LogoutRequestSent, idp.Id, "REDIRECT", redirectUrl);
context.Response.Redirect(redirectUrl, true);
return;
}
// Handle Artifact binding
if (destination.Binding == BindingType.Artifact)
{
request.Destination = destination.Url;
request.Reason = Saml20Constants.Reasons.User;
request.SubjectToLogOut.Value = StateService.Get <string>(IdpNameId);
request.SessionIndex = StateService.Get <string>(IdpSessionIdKey);
Logger.DebugFormat(TraceMessages.LogoutRequestSent, idp.Id, "ARTIFACT", request.GetXml().OuterXml);
var builder = new HttpArtifactBindingBuilder(context);
builder.RedirectFromLogout(destination, request, Guid.NewGuid().ToString("N"));
}
Logger.Error(ErrorMessages.EndpointBindingInvalid);
throw new Saml20Exception(ErrorMessages.EndpointBindingInvalid);
}
private void HandleSOAP(HttpContext context, Stream inputStream)
{
Trace.TraceMethodCalled(GetType(), "HandleSOAP");
HttpArtifactBindingParser parser = new HttpArtifactBindingParser(inputStream);
HttpArtifactBindingBuilder builder = new HttpArtifactBindingBuilder(context);
SAML20FederationConfig config = SAML20FederationConfig.GetConfig();
IDPEndPoint idp = RetrieveIDPConfiguration(parser.Issuer);
var shaHashingAlgorithm = SignatureProviderFactory.ValidateShaHashingAlgorithm(idp.ShaHashingAlgorithm);
AuditLogging.IdpId = idp.Id;
if (parser.IsArtifactResolve())
{
Trace.TraceData(TraceEventType.Information, Tracing.ArtifactResolveIn);
if (!parser.CheckSamlMessageSignature(idp.metadata.Keys))
{
HandleError(context, "Invalid Saml message signature");
AuditLogging.logEntry(Direction.UNDEFINED, Operation.ARTIFACTRESOLVE, "Signature could not be verified", parser.SamlMessage);
}
AuditLogging.AssertionId = parser.ArtifactResolve.ID;
AuditLogging.logEntry(Direction.IN, Operation.ARTIFACTRESOLVE, "", parser.SamlMessage);
builder.RespondToArtifactResolve(idp, parser.ArtifactResolve);
}
else if (parser.IsArtifactResponse())
{
Trace.TraceData(TraceEventType.Information, Tracing.ArtifactResponseIn);
Status status = parser.ArtifactResponse.Status;
if (status.StatusCode.Value != Saml20Constants.StatusCodes.Success)
{
AuditLogging.logEntry(Direction.UNDEFINED, Operation.ARTIFACTRESOLVE, string.Format("Unexpected status code for artifact response: {0}, expected 'Success', msg: {1}", status.StatusCode.Value, parser.SamlMessage));
HandleError(context, status);
return;
}
if (parser.ArtifactResponse.Any.LocalName == LogoutRequest.ELEMENT_NAME)
{
if (Trace.ShouldTrace(TraceEventType.Information))
{
Trace.TraceData(TraceEventType.Information, string.Format(Tracing.LogoutRequest, parser.ArtifactResponse.Any.OuterXml));
}
//Send logoutresponse via artifact
Saml20LogoutResponse response = new Saml20LogoutResponse();
response.Issuer = config.ServiceProvider.ID;
LogoutRequest req = Serialization.DeserializeFromXmlString <LogoutRequest>(parser.ArtifactResponse.Any.OuterXml);
response.StatusCode = Saml20Constants.StatusCodes.Success;
response.InResponseTo = req.ID;
IDPEndPointElement destination =
DetermineEndpointConfiguration(SAMLBinding.REDIRECT, idp.SLOEndpoint, idp.metadata.SLOEndpoints());
builder.RedirectFromLogout(idp, destination, response);
}
else if (parser.ArtifactResponse.Any.LocalName == LogoutResponse.ELEMENT_NAME)
{
DoLogout(context);
}
else
{
AuditLogging.logEntry(Direction.UNDEFINED, Operation.ARTIFACTRESOLVE, string.Format("Unsupported payload message in ArtifactResponse: {0}, msg: {1}", parser.ArtifactResponse.Any.LocalName, parser.SamlMessage));
HandleError(context,
string.Format("Unsupported payload message in ArtifactResponse: {0}",
parser.ArtifactResponse.Any.LocalName));
}
}
else if (parser.IsLogoutReqest())
{
if (Trace.ShouldTrace(TraceEventType.Information))
{
Trace.TraceData(TraceEventType.Information, string.Format(Tracing.LogoutRequest, parser.SamlMessage.OuterXml));
}
Saml20LogoutResponse response = new Saml20LogoutResponse();
if (!parser.IsSigned())
{
AuditLogging.logEntry(Direction.IN, Operation.LOGOUTREQUEST, "Signature not present in SOAP logout request, msg: " + parser.SamlMessage.OuterXml);
response.StatusCode = Saml20Constants.StatusCodes.RequestDenied;
}
if (idp.metadata == null)
{
AuditLogging.logEntry(Direction.IN, Operation.LOGOUTREQUEST, "Cannot find metadata for IdP: " + parser.Issuer);
// Not able to process the request as we do not know the IdP.
response.StatusCode = Saml20Constants.StatusCodes.NoAvailableIDP;
}
else
{
Saml20MetadataDocument metadata = idp.metadata;
if (!parser.CheckSignature(metadata.GetKeys(KeyTypes.signing)))
{
AuditLogging.logEntry(Direction.IN, Operation.LOGOUTREQUEST, "Request has been denied. Invalid signature SOAP logout, msg: " + parser.SamlMessage.OuterXml);
response.StatusCode = Saml20Constants.StatusCodes.RequestDenied;
}
}
if (parser.GetNameID() != null && !string.IsNullOrEmpty(parser.GetNameID().Value))
{
DoSoapLogout(context, parser.GetNameID().Value);
}
else
{
AuditLogging.logEntry(Direction.IN, Operation.LOGOUTREQUEST, "Request has been denied. No user ID was supplied in SOAP logout request, msg: " + parser.SamlMessage.OuterXml);
response.StatusCode = Saml20Constants.StatusCodes.NoAuthnContext;
}
LogoutRequest req = parser.LogoutRequest;
//Build the response object
response.Issuer = config.ServiceProvider.ID;
response.StatusCode = Saml20Constants.StatusCodes.Success;
response.InResponseTo = req.ID;
XmlDocument doc = response.GetXml();
var signingCertificate = FederationConfig.GetConfig().SigningCertificate.GetCertificate();
var signatureProvider = SignatureProviderFactory.CreateFromShaHashingAlgorithmName(shaHashingAlgorithm);
signatureProvider.SignAssertion(doc, response.ID, signingCertificate);
if (doc.FirstChild is XmlDeclaration)
{
doc.RemoveChild(doc.FirstChild);
}
builder.SendResponseMessage(doc.OuterXml);
}
else
{
Status s = parser.GetStatus();
if (s != null)
{
HandleError(context, s);
}
else
{
AuditLogging.logEntry(Direction.UNDEFINED, Operation.ARTIFACTRESOLVE, string.Format("Unsupported SamlMessage element: {0}, msg: {1}", parser.SamlMessageName, parser.SamlMessage));
HandleError(context, string.Format("Unsupported SamlMessage element: {0}", parser.SamlMessageName));
}
}
}
/// <summary>
/// Handles the SOAP message.
/// </summary>
/// <param name="context">The context.</param>
/// <param name="inputStream">The input stream.</param>
private void HandleSoap(HttpContext context, Stream inputStream)
{
var parser = new HttpArtifactBindingParser(inputStream);
Logger.DebugFormat(TraceMessages.SOAPMessageParse, parser.SamlMessage.OuterXml);
var builder = new HttpArtifactBindingBuilder(context);
var config = Saml2Config.GetConfig();
var idp = RetrieveIDPConfiguration(parser.Issuer);
if (parser.IsArtifactResolve)
{
Logger.DebugFormat(TraceMessages.ArtifactResolveReceived, parser.SamlMessage);
if (!parser.CheckSamlMessageSignature(idp.Metadata.Keys))
{
Logger.ErrorFormat(ErrorMessages.ArtifactResolveSignatureInvalid);
throw new Saml20Exception(ErrorMessages.ArtifactResolveSignatureInvalid);
}
builder.RespondToArtifactResolve(parser.ArtifactResolve);
}
else if (parser.IsArtifactResponse)
{
Logger.DebugFormat(TraceMessages.ArtifactResponseReceived, parser.SamlMessage);
if (!parser.CheckSamlMessageSignature(idp.Metadata.Keys))
{
Logger.Error(ErrorMessages.ArtifactResponseSignatureInvalid);
throw new Saml20Exception(ErrorMessages.ArtifactResponseSignatureInvalid);
}
var status = parser.ArtifactResponse.Status;
if (status.StatusCode.Value != Saml20Constants.StatusCodes.Success)
{
Logger.ErrorFormat(ErrorMessages.ArtifactResponseStatusCodeInvalid, status.StatusCode.Value);
throw new Saml20Exception(string.Format(ErrorMessages.ArtifactResponseStatusCodeInvalid, status.StatusCode.Value));
}
if (parser.ArtifactResponse.Any.LocalName == LogoutRequest.ElementName)
{
Logger.DebugFormat(TraceMessages.LogoutRequestReceived, parser.ArtifactResponse.Any.OuterXml);
var req = Serialization.DeserializeFromXmlString <LogoutRequest>(parser.ArtifactResponse.Any.OuterXml);
// Send logoutresponse via artifact
var response = new Saml20LogoutResponse
{
Issuer = config.ServiceProvider.Id,
StatusCode = Saml20Constants.StatusCodes.Success,
InResponseTo = req.Id
};
var endpoint = RetrieveIDPConfiguration(StateService.Get <string>(IdpLoginSessionKey));
var destination = DetermineEndpointConfiguration(BindingType.Redirect, endpoint.Endpoints.LogoutEndpoint, endpoint.Metadata.IDPSLOEndpoints);
builder.RedirectFromLogout(destination, response);
}
else if (parser.ArtifactResponse.Any.LocalName == LogoutResponse.ElementName)
{
DoLogout(context);
}
else
{
Logger.ErrorFormat(ErrorMessages.ArtifactResponseMissingResponse);
throw new Saml20Exception(ErrorMessages.ArtifactResponseMissingResponse);
}
}
else if (parser.IsLogoutReqest)
{
Logger.DebugFormat(TraceMessages.LogoutRequestReceived, parser.SamlMessage.OuterXml);
var req = parser.LogoutRequest;
// Build the response object
var response = new Saml20LogoutResponse
{
Issuer = config.ServiceProvider.Id,
StatusCode = Saml20Constants.StatusCodes.Success,
InResponseTo = req.Id
};
// response.Destination = destination.Url;
var doc = response.GetXml();
XmlSignatureUtils.SignDocument(doc, response.Id);
if (doc.FirstChild is XmlDeclaration)
{
doc.RemoveChild(doc.FirstChild);
}
builder.SendResponseMessage(doc.OuterXml);
}
else
{
Logger.ErrorFormat(ErrorMessages.SOAPMessageUnsupportedSamlMessage);
throw new Saml20Exception(ErrorMessages.SOAPMessageUnsupportedSamlMessage);
}
}
