private string LogoutRequestForIdp(IdentityProvider identityProvider, Saml20LogoutRequest request, IOwinContext context, Saml2Configuration config)
{
var logger = SAML2.Logging.LoggerProvider.LoggerFor(typeof(SamlMessage));
var destination = IdpSelectionUtil.DetermineEndpointConfiguration(BindingType.Redirect, identityProvider.Endpoints.DefaultLogoutEndpoint, identityProvider.Metadata.IDPSLOEndpoints);
request.Destination = destination.Url;
if (destination.Binding == BindingType.Redirect)
{
// do not set the Reason for DigiD
//request.Reason = Saml20Constants.Reasons.User;
context.Set(IdpTempSessionKey, identityProvider.Id);
var identity = context.Request.User.Identity as ClaimsIdentity;
var nameId = identity.Claims.Single(c => c.Type == ClaimTypes.NameID).Value;
request.SubjectToLogOut.Value = nameId;
var builder = new HttpRedirectBindingBuilder
{
Request = request.GetXml().OuterXml,
SigningKey = config.ServiceProvider.SigningCertificate.PrivateKey
};
var redirectUrl = destination.Url + (destination.Url.Contains("?") ? "&" : "?") + builder.ToQuery();
logger.DebugFormat(TraceMessages.LogoutRequestSent, identityProvider.Id, "REDIRECT", redirectUrl);
return(redirectUrl);
}
throw new NotImplementedException();
}
public void TestParsing_01()
{
HttpRedirectBindingBuilder bindingBuilder = new HttpRedirectBindingBuilder();
string request = string.Empty.PadLeft(350, 'A') + "ֶ״ֵזרו";
bindingBuilder.Request = request;
string query = bindingBuilder.ToQuery();
NameValueCollection coll = QueryToNameValueCollection(query);
Assert.That(coll.Count == 1);
Uri url = new Uri("http://localhost/?" + query);
HttpRedirectBindingParser bindingParser = new HttpRedirectBindingParser(url);
Assert.That(bindingParser.IsRequest);
Assert.That(!bindingParser.IsResponse);
Assert.That(!bindingParser.IsSigned);
Assert.AreEqual(request, bindingParser.Message);
try
{
bindingParser.CheckSignature(new RSACryptoServiceProvider());
Assert.Fail("Trying to verify signature of an unsigned request should have thrown an exception.");
} catch (InvalidOperationException) {}
}
/// <summary>
/// Transfers the message to the given endpoint using the HTTP-Redirect binding.
/// </summary>
protected static void HTTPRedirect(SAMLAction action, IDPEndPointElement endpoint, XmlNode message)
{
if (message.FirstChild is XmlDeclaration)
{
message.RemoveChild(message.FirstChild);
}
HttpRedirectBindingBuilder builder = new HttpRedirectBindingBuilder();
if (action == SAMLAction.SAMLRequest)
{
builder.Request = message.OuterXml;
}
else
{
builder.Response = message.OuterXml;
}
builder.signingKey = IDPConfig.IDPCertificate.PrivateKey;
UriBuilder url = new UriBuilder(endpoint.Url);
url.Query = builder.ToQuery();
HttpContext.Current.Response.Redirect(url.ToString(), true);
}
public void ParserCanEncodeAndDecodeRequestWithRelayState()
{
// Arrange
var request = string.Empty.PadRight(140, 'l');
var relaystate = "A relaystate test. @@@!!!&&&///";
var bindingBuilder = new HttpRedirectBindingBuilder()
{
Request = request,
RelayState = relaystate
};
var query = bindingBuilder.ToQuery();
var coll = QueryToNameValueCollection(query);
var url = new Uri("http://localhost/?" + query);
// Act
var bindingParser = new HttpRedirectBindingParser(url);
// Assert
Assert.Equal(2, coll.Count);
Assert.True(bindingParser.IsRequest);
Assert.False(bindingParser.IsResponse);
Assert.False(bindingParser.IsSigned);
Assert.NotNull(bindingParser.RelayState);
Assert.Equal(relaystate, bindingParser.RelayStateDecoded);
Assert.Equal(request, bindingParser.Message);
}
public void TestIntegrity_02()
{
HttpRedirectBindingBuilder binding = new HttpRedirectBindingBuilder();
binding.Response = "Response";
try
{
binding.Request = "Request";
Assert.Fail("HttpRedirectBinding did not throw an exception when both Request and Response were set.");
} catch (ArgumentException) { }
}
public void DoesNotAllowRequestAndResponseToBothBeSet()
{
// Arrange
var binding = new HttpRedirectBindingBuilder
{
Request = "Request"
};
// Act
Assert.Throws <ArgumentException>(() => binding.Response = "Response");
}
public void DoesNotAllowRequestAndResponseToBothBeSet()
{
// Arrange
var binding = new HttpRedirectBindingBuilder
{
Request = "Request"
};
// Act
binding.Response = "Response";
// Assert
Assert.Fail("HttpRedirectBinding did not throw an exception when both Request and Response were set.");
}
public void TestRelaystate_01()
{
HttpRedirectBindingBuilder bindingBuilder = new HttpRedirectBindingBuilder();
bindingBuilder.Request = "A random request... !!!! .... ";
string relaystate = string.Empty.PadRight(10, 'A');
bindingBuilder.RelayState = relaystate;
// When using the builder to create a request, the relaystate should be encoded.
string query = bindingBuilder.ToQuery();
Assert.That(!query.Contains(relaystate));
}
//"HttpRedirectBinding did not throw an exception when both Request and Response were set."
public void DoesNotAllowRequestAndResponseToBothBeSet()
{
// Arrange
var binding = new HttpRedirectBindingBuilder()
{
Request = "Request"
};
// Assert
Assert.Throws(typeof(ArgumentException), () =>
{
// Act
binding.Response = "Response";
});
}
public void TestRelaystate_02()
{
HttpRedirectBindingBuilder bindingBuilder = new HttpRedirectBindingBuilder();
bindingBuilder.Response = "A random response... !!!! .... ";
string relaystate = string.Empty.PadRight(10, 'A');
bindingBuilder.RelayState = relaystate;
// When using the builder to create a response, the relaystate
// should not be encoded, and can thus be located in the query-string
string query = bindingBuilder.ToQuery();
Assert.That(query.Contains(relaystate));
}
public void EncodesRelayStateForRequests()
{
// Arrange
var relaystate = string.Empty.PadRight(10, 'A');
var bindingBuilder = new HttpRedirectBindingBuilder
{
Request = "A random request... !!!! .... ",
RelayState = relaystate
};
// Act
var query = bindingBuilder.ToQuery();
// Assert
Assert.That(!query.Contains(relaystate));
}
public void DoesNotEncodeRelayStateForResponse()
{
// Arrange
var relaystate = string.Empty.PadRight(10, 'A');
var bindingBuilder = new HttpRedirectBindingBuilder
{
RelayState = relaystate,
Response = "A random response... !!!! .... "
};
// Act
var query = bindingBuilder.ToQuery();
// Assert
Assert.That(query.Contains(relaystate));
}
public void ParserThrowsExceptionWhenTryingToVerifySignatureOfUnsignedRequest()
{
// Arrange
var request = string.Empty.PadLeft(350, 'A') + "������";
var bindingBuilder = new HttpRedirectBindingBuilder()
{
Request = request
};
var query = bindingBuilder.ToQuery();
var url = new Uri("http://localhost/?" + query);
var bindingParser = new HttpRedirectBindingParser(url);
// Assert
Assert.Throws(typeof(InvalidOperationException), () =>
{
// Act
bindingParser.CheckSignature(new RSACryptoServiceProvider());
});
}
public void TestDSASigning()
{
HttpRedirectBindingBuilder binding = new HttpRedirectBindingBuilder();
DSACryptoServiceProvider key = new DSACryptoServiceProvider();
binding.signingKey = key;
binding.Request = string.Empty.PadLeft(500, 'a');
// Now, parse the query.
Uri url = new Uri("http://localhost/?" + binding.ToQuery());
HttpRedirectBindingParser parser = new HttpRedirectBindingParser(url);
Assert.That(parser.IsSigned);
Assert.That(parser.IsRequest);
Assert.That(parser.CheckSignature(key));
// Create a new key set, and check that it can not verify the signature.
DSACryptoServiceProvider evilKey = new DSACryptoServiceProvider();
Assert.IsFalse(parser.CheckSignature(evilKey));
}
public void ParserCanSignAuthnRequestWithDsaKey()
{
// Arrange
var key = new DSACryptoServiceProvider();
var evilKey = new DSACryptoServiceProvider();
var binding = new HttpRedirectBindingBuilder()
{
Request = string.Empty.PadLeft(500, 'a'),
//SigningCertificate = key
};
var url = new Uri("http://localhost/?" + binding.ToQuery());
// Act
var parser = new HttpRedirectBindingParser(url);
// Assert
Assert.True(parser.IsSigned);
Assert.True(parser.IsRequest);
Assert.True(parser.CheckSignature(key));
Assert.False(parser.CheckSignature(evilKey));
}
public void ParserCanEncodeAndDecodeRequest()
{
// Arrange
var request = string.Empty.PadLeft(350, 'A') + "������";
var bindingBuilder = new HttpRedirectBindingBuilder()
{
Request = request
};
var query = bindingBuilder.ToQuery();
var coll = QueryToNameValueCollection(query);
var url = new Uri("http://localhost/?" + query);
// Act
var bindingParser = new HttpRedirectBindingParser(url);
// Assert
Assert.True(coll.Count == 1);
Assert.True(bindingParser.IsRequest);
Assert.True(!bindingParser.IsResponse);
Assert.True(!bindingParser.IsSigned);
Assert.Equal(request, bindingParser.Message);
}
public void TestParsing_02()
{
HttpRedirectBindingBuilder bindingBuilder = new HttpRedirectBindingBuilder();
string request = string.Empty.PadRight(140, 'l');
string relaystate = "A relaystate test. @@@!!!&&&///";
bindingBuilder.Request = request;
bindingBuilder.RelayState = relaystate;
string query = bindingBuilder.ToQuery();
NameValueCollection coll = QueryToNameValueCollection(query);
Assert.AreEqual(2, coll.Count);
Uri url = new Uri("http://localhost/?" + query);
HttpRedirectBindingParser bindingParser = new HttpRedirectBindingParser(url);
Assert.IsTrue(bindingParser.IsRequest);
Assert.IsFalse(bindingParser.IsResponse);
Assert.IsFalse(bindingParser.IsSigned);
Assert.IsNotNull(bindingParser.RelayState);
Assert.AreEqual(relaystate, bindingParser.RelayStateDecoded);
Assert.AreEqual(request, bindingParser.Message);
}
private string AuthnRequestForIdp(IdentityProvider identityProvider, Saml20AuthnRequest request, IOwinContext context, Saml2Configuration config)
{
var logger = SAML2.Logging.LoggerProvider.LoggerFor(typeof(SamlMessage));
context.Set(IdpTempSessionKey, identityProvider.Id);
// Determine which endpoint to use from the configuration file or the endpoint metadata.
var destination = IdpSelectionUtil.DetermineEndpointConfiguration(BindingType.Redirect, identityProvider.Endpoints.DefaultSignOnEndpoint, identityProvider.Metadata.SSOEndpoints);
request.Destination = destination.Url;
if (identityProvider.ForceAuth)
{
request.ForceAuthn = true;
}
// Check isPassive status
if (context.Get <bool>(IdpIsPassive))
{
request.IsPassive = true;
}
if (identityProvider.IsPassive)
{
request.IsPassive = true;
}
// Check if request should forceAuthn
if (context.Get <bool>(IdpForceAuthn))
{
request.ForceAuthn = true;
}
// Check if protocol binding should be forced
if (identityProvider.Endpoints.DefaultSignOnEndpoint != null)
{
if (!string.IsNullOrEmpty(identityProvider.Endpoints.DefaultSignOnEndpoint.ForceProtocolBinding))
{
request.ProtocolBinding = identityProvider.Endpoints.DefaultSignOnEndpoint.ForceProtocolBinding;
}
}
// Save request message id to session
Utility.AddExpectedResponseId(request.Id);
switch (destination.Binding)
{
case BindingType.Redirect:
logger.DebugFormat(TraceMessages.AuthnRequestPrepared, identityProvider.Id, Saml20Constants.ProtocolBindings.HttpRedirect);
var redirectBuilder = new HttpRedirectBindingBuilder
{
SigningKey = config.ServiceProvider.SigningCertificate.PrivateKey,
Request = request.GetXml().OuterXml
};
if (context.Authentication != null &&
context.Authentication.AuthenticationResponseChallenge != null &&
context.Authentication.AuthenticationResponseChallenge.Properties != null &&
context.Authentication.AuthenticationResponseChallenge.Properties.Dictionary != null &&
context.Authentication.AuthenticationResponseChallenge.Properties.Dictionary.Count > 0)
{
redirectBuilder.RelayState = context.Authentication.AuthenticationResponseChallenge.Properties.Dictionary.ToDelimitedString();
}
logger.DebugFormat(TraceMessages.AuthnRequestSent, redirectBuilder.Request);
var redirectLocation = request.Destination + (request.Destination.Contains("?") ? "&" : "?") + redirectBuilder.ToQuery();
return(redirectLocation);
case BindingType.Post:
case BindingType.PostSimpleSign:
throw new NotImplementedException();
//logger.DebugFormat(TraceMessages.AuthnRequestPrepared, identityProvider.Id, Saml20Constants.ProtocolBindings.HttpPost);
//var postBuilder = new HttpPostBindingBuilder(destination);
//// Honor the ForceProtocolBinding and only set this if it's not already set
//if (string.IsNullOrEmpty(request.ProtocolBinding)) {
// request.ProtocolBinding = Saml20Constants.ProtocolBindings.HttpPost;
//}
//var requestXml = request.GetXml();
//XmlSignatureUtils.SignDocument(requestXml, request.Id, config.ServiceProvider.SigningCertificate);
//postBuilder.Request = requestXml.OuterXml;
//logger.DebugFormat(TraceMessages.AuthnRequestSent, postBuilder.Request);
//context.Response.Write(postBuilder.GetPage());
//break;
case BindingType.Artifact:
throw new NotImplementedException();
//logger.DebugFormat(TraceMessages.AuthnRequestPrepared, identityProvider.Id, Saml20Constants.ProtocolBindings.HttpArtifact);
//var artifactBuilder = new HttpArtifactBindingBuilder(context, config);
//// Honor the ForceProtocolBinding and only set this if it's not already set
//if (string.IsNullOrEmpty(request.ProtocolBinding)) {
// request.ProtocolBinding = Saml20Constants.ProtocolBindings.HttpArtifact;
//}
//logger.DebugFormat(TraceMessages.AuthnRequestSent, request.GetXml().OuterXml);
//artifactBuilder.RedirectFromLogin(destination, request);
//break;
default:
logger.Error(SAML2.ErrorMessages.EndpointBindingInvalid);
throw new Saml20Exception(SAML2.ErrorMessages.EndpointBindingInvalid);
}
throw new NotImplementedException();
}
private void HandleRequest(HttpContext context)
{
Trace.TraceMethodCalled(GetType(), "HandleRequest()");
//Fetch config object
SAML20FederationConfig config = SAML20FederationConfig.GetConfig();
LogoutRequest logoutRequest = null;
IDPEndPoint endpoint = null;
string message = string.Empty;
//Build the response object
var response = new Saml20LogoutResponse();
response.Issuer = config.ServiceProvider.ID;
response.StatusCode = Saml20Constants.StatusCodes.Success; // Default success. Is overwritten if something fails.
if(context.Request.RequestType == "GET") // HTTP Redirect binding
{
HttpRedirectBindingParser parser = new HttpRedirectBindingParser(context.Request.Url);
AuditLogging.logEntry(Direction.IN, Operation.LOGOUTREQUEST,
string.Format("Binding: redirect, Signature algorithm: {0} Signature: {1}, Message: {2}", parser.SignatureAlgorithm, parser.Signature, parser.Message));
if (!parser.IsSigned)
{
AuditLogging.logEntry(Direction.IN, Operation.LOGOUTREQUEST, "Signature not present, msg: " + parser.Message);
response.StatusCode = Saml20Constants.StatusCodes.RequestDenied;
}
logoutRequest = parser.LogoutRequest;
endpoint = config.FindEndPoint(logoutRequest.Issuer.Value);
if (endpoint.metadata == null)
{
AuditLogging.logEntry(Direction.IN, Operation.LOGOUTREQUEST, "Cannot find metadata for IdP: " + logoutRequest.Issuer.Value);
// Not able to return a response as we do not know the IdP.
HandleError(context, "Cannot find metadata for IdP " + logoutRequest.Issuer.Value);
return;
}
Saml20MetadataDocument metadata = endpoint.metadata;
if (!parser.VerifySignature(metadata.GetKeys(KeyTypes.signing)))
{
AuditLogging.logEntry(Direction.IN, Operation.LOGOUTREQUEST, "Request has been denied. Invalid signature redirect-binding, msg: " + parser.Message);
response.StatusCode = Saml20Constants.StatusCodes.RequestDenied;
}
message = parser.Message;
}
else if (context.Request.RequestType == "POST") // HTTP Post binding
{
HttpPostBindingParser parser = new HttpPostBindingParser(context);
AuditLogging.logEntry(Direction.IN, Operation.LOGOUTREQUEST,
"Binding: POST, Message: " + parser.Message);
if (!parser.IsSigned())
{
AuditLogging.logEntry(Direction.IN, Operation.LOGOUTREQUEST, "Signature not present, msg: " + parser.Message);
response.StatusCode = Saml20Constants.StatusCodes.RequestDenied;
}
logoutRequest = parser.LogoutRequest;
endpoint = config.FindEndPoint(logoutRequest.Issuer.Value);
if (endpoint.metadata == null)
{
AuditLogging.logEntry(Direction.IN, Operation.LOGOUTREQUEST, "Cannot find metadata for IdP");
// Not able to return a response as we do not know the IdP.
HandleError(context, "Cannot find metadata for IdP " + logoutRequest.Issuer.Value);
return;
}
Saml20MetadataDocument metadata = endpoint.metadata;
// handle a logout-request
if (!parser.CheckSignature(metadata.GetKeys(KeyTypes.signing)))
{
AuditLogging.logEntry(Direction.IN, Operation.LOGOUTREQUEST, "Request has been denied. Invalid signature post-binding, msg: " + parser.Message);
response.StatusCode = Saml20Constants.StatusCodes.RequestDenied;
}
message = parser.Message;
}else
{
//Error: We don't support HEAD, PUT, CONNECT, TRACE, DELETE and OPTIONS
// Not able to return a response as we do not understand the request.
HandleError(context, Resources.UnsupportedRequestTypeFormat(context.Request.RequestType));
}
AuditLogging.logEntry(Direction.IN, Operation.LOGOUTREQUEST, message);
// Check that idp in session and request matches.
string idpRequest = logoutRequest.Issuer.Value;
if (!context.Session.IsNewSession)
{
object idpSession = context.Session[IDPLoginSessionKey];
if (idpSession != null && idpSession.ToString() != idpRequest)
{
AuditLogging.logEntry(Direction.IN, Operation.LOGOUTREQUEST, Resources.IdPMismatchBetweenRequestAndSessionFormat(idpSession, idpRequest), message);
response.StatusCode = Saml20Constants.StatusCodes.RequestDenied;
}
}
else
{
// All other status codes than Success results in the IdP throwing an error page. Therefore we return default Success even if we do not have a session.
AuditLogging.logEntry(Direction.IN, Operation.LOGOUTREQUEST, "Session does not exist. Continues the redirect logout procedure with status code success." + idpRequest, message);
}
// Only logout if request is valid and we are working on an existing Session.
if (Saml20Constants.StatusCodes.Success == response.StatusCode && !context.Session.IsNewSession)
{
// Execute all actions that the service provider has configured
DoLogout(context, true);
}
// Update the response object with informations that first is available when request has been parsed.
IDPEndPointElement destination = DetermineEndpointConfiguration(SAMLBinding.REDIRECT, endpoint.SLOEndpoint, endpoint.metadata.SLOEndpoints());
response.Destination = destination.Url;
response.InResponseTo = logoutRequest.ID;
//Respond using redirect binding
if(destination.Binding == SAMLBinding.REDIRECT)
{
HttpRedirectBindingBuilder builder = new HttpRedirectBindingBuilder();
builder.RelayState = context.Request.Params["RelayState"];
builder.Response = response.GetXml().OuterXml;
builder.signingKey = FederationConfig.GetConfig().SigningCertificate.GetCertificate().PrivateKey;
string s = destination.Url + "?" + builder.ToQuery();
context.Response.Redirect(s, true);
return;
}
//Respond using post binding
if (destination.Binding == SAMLBinding.POST)
{
HttpPostBindingBuilder builder = new HttpPostBindingBuilder(destination);
builder.Action = SAMLAction.SAMLResponse;
XmlDocument responseDocument = response.GetXml();
XmlSignatureUtils.SignDocument(responseDocument, response.ID);
builder.Response = responseDocument.OuterXml;
builder.RelayState = context.Request.Params["RelayState"];
builder.GetPage().ProcessRequest(context);
return;
}
}
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);
}
/// <summary>
/// Transfers the client.
/// </summary>
/// <param name="identityProvider">The identity provider.</param>
/// <param name="request">The request.</param>
/// <param name="context">The context.</param>
private void TransferClient(IdentityProvider identityProvider, Saml20AuthnRequest request, HttpContext context)
{
// Set the last IDP we attempted to login at.
StateService.Set(IdpTempSessionKey, identityProvider.Id);
// Determine which endpoint to use from the configuration file or the endpoint metadata.
var destination = DetermineEndpointConfiguration(BindingType.Redirect, identityProvider.SignOnEndpoint, identityProvider.Metadata.SSOEndpoints);
request.Destination = destination.Url;
if (identityProvider.ForceAuth)
{
request.ForceAuthn = true;
}
// Check isPassive status
var isPassiveFlag = StateService.Get <bool?>(IdpIsPassive);
if (isPassiveFlag != null && (bool)isPassiveFlag)
{
request.IsPassive = true;
StateService.Set(IdpIsPassive, null);
}
if (identityProvider.IsPassive)
{
request.IsPassive = true;
}
// Check if request should forceAuthn
var forceAuthnFlag = StateService.Get <bool?>(IdpForceAuthn);
if (forceAuthnFlag != null && (bool)forceAuthnFlag)
{
request.ForceAuthn = true;
StateService.Set(IdpForceAuthn, null);
}
// Check if protocol binding should be forced
if (identityProvider.SignOnEndpoint != null)
{
if (!string.IsNullOrEmpty(identityProvider.SignOnEndpoint.ForceProtocolBinding))
{
request.ProtocolBinding = identityProvider.SignOnEndpoint.ForceProtocolBinding;
}
}
// Save request message id to session
StateService.Set(ExpectedInResponseToSessionKey, request.Id);
switch (destination.Binding)
{
case BindingType.Redirect:
Logger.DebugFormat(TraceMessages.AuthnRequestPrepared, identityProvider.Id, Saml20Constants.ProtocolBindings.HttpRedirect);
var redirectBuilder = new HttpRedirectBindingBuilder
{
SigningKey = _certificate.PrivateKey,
Request = request.GetXml().OuterXml
};
Logger.DebugFormat(TraceMessages.AuthnRequestSent, redirectBuilder.Request);
var redirectLocation = request.Destination + (request.Destination.Contains("?") ? "&" : "?") + redirectBuilder.ToQuery();
context.Response.Redirect(redirectLocation, true);
break;
case BindingType.Post:
Logger.DebugFormat(TraceMessages.AuthnRequestPrepared, identityProvider.Id, Saml20Constants.ProtocolBindings.HttpPost);
var postBuilder = new HttpPostBindingBuilder(destination);
// Honor the ForceProtocolBinding and only set this if it's not already set
if (string.IsNullOrEmpty(request.ProtocolBinding))
{
request.ProtocolBinding = Saml20Constants.ProtocolBindings.HttpPost;
}
var requestXml = request.GetXml();
XmlSignatureUtils.SignDocument(requestXml, request.Id);
postBuilder.Request = requestXml.OuterXml;
Logger.DebugFormat(TraceMessages.AuthnRequestSent, postBuilder.Request);
postBuilder.GetPage().ProcessRequest(context);
break;
case BindingType.Artifact:
Logger.DebugFormat(TraceMessages.AuthnRequestPrepared, identityProvider.Id, Saml20Constants.ProtocolBindings.HttpArtifact);
var artifactBuilder = new HttpArtifactBindingBuilder(context);
// Honor the ForceProtocolBinding and only set this if it's not already set
if (string.IsNullOrEmpty(request.ProtocolBinding))
{
request.ProtocolBinding = Saml20Constants.ProtocolBindings.HttpArtifact;
}
Logger.DebugFormat(TraceMessages.AuthnRequestSent, request.GetXml().OuterXml);
artifactBuilder.RedirectFromLogin(destination, request);
break;
default:
Logger.Error(ErrorMessages.EndpointBindingInvalid);
throw new Saml20Exception(ErrorMessages.EndpointBindingInvalid);
}
}
private void TransferClient(IDPEndPoint idpEndpoint, Saml20AuthnRequest request, HttpContext context)
{
AuditLogging.AssertionId = request.ID;
AuditLogging.IdpId = idpEndpoint.Id;
//Set the last IDP we attempted to login at.
context.Session[IDPTempSessionKey] = idpEndpoint.Id;
// Determine which endpoint to use from the configuration file or the endpoint metadata.
IDPEndPointElement destination =
DetermineEndpointConfiguration(SAMLBinding.REDIRECT, idpEndpoint.SSOEndpoint, idpEndpoint.metadata.SSOEndpoints());
request.Destination = destination.Url;
if (idpEndpoint.ForceAuthn)
{
request.ForceAuthn = true;
}
object isPassiveFlag = context.Session[IDPIsPassive];
if (isPassiveFlag != null && (bool)isPassiveFlag)
{
request.IsPassive = true;
context.Session[IDPIsPassive] = null;
}
if (idpEndpoint.IsPassive)
{
request.IsPassive = true;
}
object forceAuthnFlag = context.Session[IDPForceAuthn];
if (forceAuthnFlag != null && (bool)forceAuthnFlag)
{
request.ForceAuthn = true;
context.Session[IDPForceAuthn] = null;
}
if (idpEndpoint.SSOEndpoint != null)
{
if (!string.IsNullOrEmpty(idpEndpoint.SSOEndpoint.ForceProtocolBinding))
{
request.ProtocolBinding = idpEndpoint.SSOEndpoint.ForceProtocolBinding;
}
}
//Save request message id to session
context.Session.Add(ExpectedInResponseToSessionKey, request.ID);
if (destination.Binding == SAMLBinding.REDIRECT)
{
Trace.TraceData(TraceEventType.Information, string.Format(Tracing.SendAuthnRequest, Saml20Constants.ProtocolBindings.HTTP_Redirect, idpEndpoint.Id));
HttpRedirectBindingBuilder builder = new HttpRedirectBindingBuilder();
builder.signingKey = _certificate.PrivateKey;
builder.Request = request.GetXml().OuterXml;
string s = request.Destination + "?" + builder.ToQuery();
AuditLogging.logEntry(Direction.OUT, Operation.AUTHNREQUEST_REDIRECT, "Redirecting user to IdP for authentication", builder.Request);
context.Response.Redirect(s, true);
return;
}
if (destination.Binding == SAMLBinding.POST)
{
Trace.TraceData(TraceEventType.Information, string.Format(Tracing.SendAuthnRequest, Saml20Constants.ProtocolBindings.HTTP_Post, idpEndpoint.Id));
HttpPostBindingBuilder builder = new HttpPostBindingBuilder(destination);
//Honor the ForceProtocolBinding and only set this if it's not already set
if (string.IsNullOrEmpty(request.ProtocolBinding))
{
request.ProtocolBinding = Saml20Constants.ProtocolBindings.HTTP_Post;
}
XmlDocument req = request.GetXml();
XmlSignatureUtils.SignDocument(req, request.ID);
builder.Request = req.OuterXml;
AuditLogging.logEntry(Direction.OUT, Operation.AUTHNREQUEST_POST);
builder.GetPage().ProcessRequest(context);
return;
}
if (destination.Binding == SAMLBinding.ARTIFACT)
{
Trace.TraceData(TraceEventType.Information, string.Format(Tracing.SendAuthnRequest, Saml20Constants.ProtocolBindings.HTTP_Artifact, idpEndpoint.Id));
HttpArtifactBindingBuilder builder = new HttpArtifactBindingBuilder(context);
//Honor the ForceProtocolBinding and only set this if it's not already set
if (string.IsNullOrEmpty(request.ProtocolBinding))
{
request.ProtocolBinding = Saml20Constants.ProtocolBindings.HTTP_Artifact;
}
AuditLogging.logEntry(Direction.OUT, Operation.AUTHNREQUEST_REDIRECT_ARTIFACT);
builder.RedirectFromLogin(destination, request);
}
HandleError(context, Resources.BindingError);
}
/// <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 TransferClient(IDPEndPoint idpEndpoint, Saml20AuthnRequest request, HttpContext context)
{
AuditLogging.AssertionId = request.ID;
AuditLogging.IdpId = idpEndpoint.Id;
// Determine which endpoint to use from the configuration file or the endpoint metadata.
IDPEndPointElement destination =
DetermineEndpointConfiguration(SAMLBinding.REDIRECT, idpEndpoint.SSOEndpoint, idpEndpoint.metadata.SSOEndpoints());
request.Destination = destination.Url;
bool isPassive;
string isPassiveAsString = context.Request.Params[IDPIsPassive];
if (bool.TryParse(isPassiveAsString, out isPassive))
{
request.IsPassive = isPassive;
}
if (idpEndpoint.IsPassive)
{
request.IsPassive = true;
}
bool forceAuthn;
string forceAuthnAsString = context.Request.Params[IDPForceAuthn];
if (bool.TryParse(forceAuthnAsString, out forceAuthn))
{
request.ForceAuthn = forceAuthn;
}
if (idpEndpoint.ForceAuthn)
{
request.ForceAuthn = true;
}
if (idpEndpoint.SSOEndpoint != null)
{
if (!string.IsNullOrEmpty(idpEndpoint.SSOEndpoint.ForceProtocolBinding))
{
request.ProtocolBinding = idpEndpoint.SSOEndpoint.ForceProtocolBinding;
}
}
//Save request message id to session
SessionStore.CurrentSession[SessionConstants.ExpectedInResponseTo] = request.ID;
var shaHashingAlgorithm = SignatureProviderFactory.ValidateShaHashingAlgorithm(idpEndpoint.ShaHashingAlgorithm);
if (destination.Binding == SAMLBinding.REDIRECT)
{
Trace.TraceData(TraceEventType.Information, string.Format(Tracing.SendAuthnRequest, Saml20Constants.ProtocolBindings.HTTP_Redirect, idpEndpoint.Id));
HttpRedirectBindingBuilder builder = new HttpRedirectBindingBuilder();
builder.signingKey = _certificate.PrivateKey;
builder.Request = request.GetXml().OuterXml;
builder.ShaHashingAlgorithm = shaHashingAlgorithm;
string s = request.Destination + "?" + builder.ToQuery();
AuditLogging.logEntry(Direction.OUT, Operation.AUTHNREQUEST_REDIRECT, "Redirecting user to IdP for authentication", builder.Request);
context.Response.Redirect(s, true);
return;
}
if (destination.Binding == SAMLBinding.POST)
{
Trace.TraceData(TraceEventType.Information, string.Format(Tracing.SendAuthnRequest, Saml20Constants.ProtocolBindings.HTTP_Post, idpEndpoint.Id));
HttpPostBindingBuilder builder = new HttpPostBindingBuilder(destination);
//Honor the ForceProtocolBinding and only set this if it's not already set
if (string.IsNullOrEmpty(request.ProtocolBinding))
{
request.ProtocolBinding = Saml20Constants.ProtocolBindings.HTTP_Post;
}
XmlDocument req = request.GetXml();
var signingCertificate = FederationConfig.GetConfig().SigningCertificate.GetCertificate();
var signatureProvider = SignatureProviderFactory.CreateFromShaHashingAlgorithmName(shaHashingAlgorithm);
signatureProvider.SignAssertion(req, request.ID, signingCertificate);
builder.Request = req.OuterXml;
AuditLogging.logEntry(Direction.OUT, Operation.AUTHNREQUEST_POST);
builder.GetPage().ProcessRequest(context);
return;
}
if (destination.Binding == SAMLBinding.ARTIFACT)
{
Trace.TraceData(TraceEventType.Information, string.Format(Tracing.SendAuthnRequest, Saml20Constants.ProtocolBindings.HTTP_Artifact, idpEndpoint.Id));
HttpArtifactBindingBuilder builder = new HttpArtifactBindingBuilder(context);
//Honor the ForceProtocolBinding and only set this if it's not already set
if (string.IsNullOrEmpty(request.ProtocolBinding))
{
request.ProtocolBinding = Saml20Constants.ProtocolBindings.HTTP_Artifact;
}
AuditLogging.logEntry(Direction.OUT, Operation.AUTHNREQUEST_REDIRECT_ARTIFACT);
builder.RedirectFromLogin(idpEndpoint, destination, request);
}
HandleError(context, Resources.BindingError);
}
private void HandleRequest(HttpContext context)
{
Trace.TraceMethodCalled(GetType(), "HandleRequest()");
//Fetch the endpoint configuration
IDPEndPoint idpEndpoint = RetrieveIDPConfiguration(context.Session[IDPLoginSessionKey].ToString());
IDPEndPointElement destination =
DetermineEndpointConfiguration(SAMLBinding.REDIRECT, idpEndpoint.SLOEndpoint, idpEndpoint.metadata.SLOEndpoints());
//Fetch config object
SAML20FederationConfig config = ConfigurationReader.GetConfig <SAML20FederationConfig>();
//Build the response object
Saml20LogoutResponse response = new Saml20LogoutResponse();
response.Issuer = config.ServiceProvider.ID;
response.Destination = destination.Url;
response.StatusCode = Saml20Constants.StatusCodes.Success;
string message = string.Empty;
if (context.Request.RequestType == "GET") // HTTP Redirect binding
{
HttpRedirectBindingParser parser = new HttpRedirectBindingParser(context.Request.Url);
IDPEndPoint endpoint = config.FindEndPoint(idpEndpoint.Id);
if (endpoint.metadata == null)
{
AuditLogging.logEntry(Direction.IN, Operation.LOGOUTREQUEST, "Cannot find metadata for IdP");
HandleError(context, "Cannot find metadata for IdP " + idpEndpoint.Id);
return;
}
Saml20MetadataDocument metadata = endpoint.metadata;
if (!parser.VerifySignature(metadata.GetKeys(KeyTypes.signing)))
{
AuditLogging.logEntry(Direction.IN, Operation.LOGOUTREQUEST, "Invalid signature redirect-binding, msg: " + parser.Message);
HandleError(context, Resources.SignatureInvalid);
return;
}
message = parser.Message;
}
else if (context.Request.RequestType == "POST") // HTTP Post binding
{
HttpPostBindingParser parser = new HttpPostBindingParser(context);
if (!parser.IsSigned())
{
AuditLogging.logEntry(Direction.IN, Operation.LOGOUTREQUEST, "Signature not present, msg: " + parser.Message);
HandleError(context, Resources.SignatureNotPresent);
}
IDPEndPoint endpoint = config.FindEndPoint(idpEndpoint.Id);
if (endpoint.metadata == null)
{
AuditLogging.logEntry(Direction.IN, Operation.LOGOUTREQUEST, "Cannot find metadata for IdP");
HandleError(context, "Cannot find metadata for IdP " + idpEndpoint.Id);
return;
}
Saml20MetadataDocument metadata = endpoint.metadata;
// handle a logout-request
if (!parser.CheckSignature(metadata.GetKeys(KeyTypes.signing)))
{
AuditLogging.logEntry(Direction.IN, Operation.LOGOUTREQUEST, "Invalid signature post-binding, msg: " + parser.Message);
HandleError(context, Resources.SignatureInvalid);
}
message = parser.Message;
}
else
{
//Error: We don't support HEAD, PUT, CONNECT, TRACE, DELETE and OPTIONS
HandleError(context, Resources.UnsupportedRequestTypeFormat(context.Request.RequestType));
}
AuditLogging.logEntry(Direction.IN, Operation.LOGOUTREQUEST, message);
//Log the user out locally
DoLogout(context, true);
LogoutRequest req = Serialization.DeserializeFromXmlString <LogoutRequest>(message);
response.InResponseTo = req.ID;
//Respond using redirect binding
if (destination.Binding == SAMLBinding.REDIRECT)
{
HttpRedirectBindingBuilder builder = new HttpRedirectBindingBuilder();
builder.RelayState = context.Request.Params["RelayState"];
builder.Response = response.GetXml().OuterXml;
builder.signingKey = FederationConfig.GetConfig().SigningCertificate.GetCertificate().PrivateKey;
string s = destination.Url + "?" + builder.ToQuery();
context.Response.Redirect(s, true);
return;
}
//Respond using post binding
if (destination.Binding == SAMLBinding.POST)
{
HttpPostBindingBuilder builder = new HttpPostBindingBuilder(destination);
builder.Action = SAMLAction.SAMLResponse;
XmlDocument responseDocument = response.GetXml();
XmlSignatureUtils.SignDocument(responseDocument, response.ID);
builder.Response = responseDocument.OuterXml;
builder.RelayState = context.Request.Params["RelayState"];
builder.GetPage().ProcessRequest(context);
return;
}
}
/// <summary>
/// Transfers the client.
/// </summary>
/// <param name="identityProvider">The identity provider.</param>
/// <param name="request">The request.</param>
/// <param name="context">The context.</param>
private void TransferClient(IdentityProvider identityProvider, Saml20AuthnRequest request, HttpContext context, Saml2Configuration config)
{
IdentityProviderEndpoint destination = ConfigureRequest(identityProvider, request, context);
switch (destination.Binding)
{
case BindingType.Redirect:
Logger.DebugFormat(TraceMessages.AuthnRequestPrepared, identityProvider.Id, Saml20Constants.ProtocolBindings.HttpRedirect);
var redirectBuilder = new HttpRedirectBindingBuilder
{
SigningKey = _certificate.PrivateKey,
Request = request.GetXml().OuterXml
};
Logger.DebugFormat(TraceMessages.AuthnRequestSent, redirectBuilder.Request);
var redirectLocation = request.Destination + (request.Destination.Contains("?") ? "&" : "?") + redirectBuilder.ToQuery();
context.Response.Redirect(redirectLocation, true);
break;
case BindingType.Post:
Logger.DebugFormat(TraceMessages.AuthnRequestPrepared, identityProvider.Id, Saml20Constants.ProtocolBindings.HttpPost);
var postBuilder = new HttpPostBindingBuilder(destination);
// Honor the ForceProtocolBinding and only set this if it's not already set
if (string.IsNullOrEmpty(request.ProtocolBinding))
{
request.ProtocolBinding = Saml20Constants.ProtocolBindings.HttpPost;
}
var requestXml = request.GetXml();
XmlSignatureUtils.SignDocument(requestXml, request.Id, config.ServiceProvider.SigningCertificate);
postBuilder.Request = requestXml.OuterXml;
Logger.DebugFormat(TraceMessages.AuthnRequestSent, postBuilder.Request);
context.Response.Write(postBuilder.GetPage());
break;
case BindingType.PostSimpleSign:
Logger.DebugFormat(TraceMessages.AuthnRequestPrepared, identityProvider.Id, Saml20Constants.ProtocolBindings.HttpPostSimpleSign);
var postSimpleSignBuilder = new HttpPostBindingBuilder(destination);
// Honor the ForceProtocolBinding and only set this if it's not already set
if (string.IsNullOrEmpty(request.ProtocolBinding))
{
request.ProtocolBinding = Saml20Constants.ProtocolBindings.HttpPostSimpleSign;
}
var requestXmlSimpleSign = request.GetXml();
XmlSignatureUtils.SignDocument(requestXmlSimpleSign, request.Id, config.ServiceProvider.SigningCertificate);
postSimpleSignBuilder.Request = requestXmlSimpleSign.OuterXml;
Logger.DebugFormat(TraceMessages.AuthnRequestSent, postSimpleSignBuilder.Request);
context.Response.Write(postSimpleSignBuilder.GetPage());
break;
case BindingType.Artifact:
Logger.DebugFormat(TraceMessages.AuthnRequestPrepared, identityProvider.Id, Saml20Constants.ProtocolBindings.HttpArtifact);
var artifactBuilder = GetBuilder(context);
// Honor the ForceProtocolBinding and only set this if it's not already set
if (string.IsNullOrEmpty(request.ProtocolBinding))
{
request.ProtocolBinding = Saml20Constants.ProtocolBindings.HttpArtifact;
}
Logger.DebugFormat(TraceMessages.AuthnRequestSent, request.GetXml().OuterXml);
artifactBuilder.RedirectFromLogin(destination, request, context.Request.Params["relayState"], (s, o) => context.Cache.Insert(s, o, null, DateTime.Now.AddMinutes(1), Cache.NoSlidingExpiration));
break;
default:
Logger.Error(ErrorMessages.EndpointBindingInvalid);
throw new Saml20Exception(ErrorMessages.EndpointBindingInvalid);
}
}
private void TransferClient(IDPEndPoint idpEndpoint, Saml20AuthnRequest request, HttpContext context)
{
AuditLogging.AssertionId = request.ID;
AuditLogging.IdpId = idpEndpoint.Id;
// Determine which endpoint to use from the configuration file or the endpoint metadata.
IDPEndPointElement destination =
DetermineEndpointConfiguration(SAMLBinding.REDIRECT, idpEndpoint.SSOEndpoint, idpEndpoint.metadata.SSOEndpoints());
request.Destination = destination.Url;
bool isPassive;
string isPassiveAsString = context.Request.Params[IDPIsPassive];
if (bool.TryParse(isPassiveAsString, out isPassive))
{
request.IsPassive = isPassive;
}
var requestContextItems = new List <(string value, ItemsChoiceType7 type)>();
if (!string.IsNullOrEmpty(context.Request.Params[NsisLoa]))
{
string demandedLevelOfAssurance = context.Request.Params[NsisLoa].ToString();
if (!new[] { "Low", "Substantial", "High" }.Contains(demandedLevelOfAssurance))
{
HandleError(context, string.Format(Resources.DemandingLevelOfAssuranceError, demandedLevelOfAssurance));
return;
}
requestContextItems.Add((DKSaml20NsisLoaAttribute.NAME + "/" + demandedLevelOfAssurance, ItemsChoiceType7.AuthnContextClassRef));
// Persist demanded LoA in session to be able to verify assertion
SessionStore.CurrentSession[SessionConstants.ExpectedNsisLoa] = demandedLevelOfAssurance;
Trace.TraceData(TraceEventType.Information, string.Format(Tracing.DemandingLevelOfAssurance, demandedLevelOfAssurance));
}
if (!string.IsNullOrEmpty(context.Request.Params[Profile]))
{
string demandedProfile = context.Request.Params[Profile].ToString();
if (!new[] { "Professional", "Person" }.Contains(demandedProfile))
{
HandleError(context, string.Format(Resources.DemandingProfileError, demandedProfile));
return;
}
requestContextItems.Add(("https://data.gov.dk/eid/" + demandedProfile, ItemsChoiceType7.AuthnContextClassRef));
Trace.TraceData(TraceEventType.Information, string.Format(Tracing.DemandingProfile, demandedProfile));
}
if (requestContextItems.Count > 0)
{
request.Request.RequestedAuthnContext = new RequestedAuthnContext();
request.Request.RequestedAuthnContext.Comparison = AuthnContextComparisonType.minimum;
request.Request.RequestedAuthnContext.ItemsElementName = requestContextItems.Select(x => x.type).ToArray();
request.Request.RequestedAuthnContext.Items = requestContextItems.Select(x => x.value).ToArray();
}
if (idpEndpoint.IsPassive)
{
request.IsPassive = true;
}
bool forceAuthn;
string forceAuthnAsString = context.Request.Params[IDPForceAuthn];
if (bool.TryParse(forceAuthnAsString, out forceAuthn))
{
request.ForceAuthn = forceAuthn;
}
if (idpEndpoint.ForceAuthn)
{
request.ForceAuthn = true;
}
if (idpEndpoint.SSOEndpoint != null)
{
if (!string.IsNullOrEmpty(idpEndpoint.SSOEndpoint.ForceProtocolBinding))
{
request.ProtocolBinding = idpEndpoint.SSOEndpoint.ForceProtocolBinding;
}
}
//Save request message id to session
SessionStore.CurrentSession[SessionConstants.ExpectedInResponseTo] = request.ID;
var shaHashingAlgorithm = SignatureProviderFactory.ValidateShaHashingAlgorithm(idpEndpoint.ShaHashingAlgorithm);
if (destination.Binding == SAMLBinding.REDIRECT)
{
Trace.TraceData(TraceEventType.Information, string.Format(Tracing.SendAuthnRequest, Saml20Constants.ProtocolBindings.HTTP_Redirect, idpEndpoint.Id));
HttpRedirectBindingBuilder builder = new HttpRedirectBindingBuilder();
builder.signingKey = _certificate.PrivateKey;
builder.Request = request.GetXml().OuterXml;
builder.ShaHashingAlgorithm = shaHashingAlgorithm;
string s = request.Destination + "?" + builder.ToQuery();
AuditLogging.logEntry(Direction.OUT, Operation.AUTHNREQUEST_REDIRECT, "Redirecting user to IdP for authentication", builder.Request);
context.Response.Redirect(s, true);
return;
}
if (destination.Binding == SAMLBinding.POST)
{
Trace.TraceData(TraceEventType.Information, string.Format(Tracing.SendAuthnRequest, Saml20Constants.ProtocolBindings.HTTP_Post, idpEndpoint.Id));
HttpPostBindingBuilder builder = new HttpPostBindingBuilder(destination);
//Honor the ForceProtocolBinding and only set this if it's not already set
if (string.IsNullOrEmpty(request.ProtocolBinding))
{
request.ProtocolBinding = Saml20Constants.ProtocolBindings.HTTP_Post;
}
XmlDocument req = request.GetXml();
var signingCertificate = FederationConfig.GetConfig().GetFirstValidCertificate();
var signatureProvider = SignatureProviderFactory.CreateFromShaHashingAlgorithmName(shaHashingAlgorithm);
signatureProvider.SignAssertion(req, request.ID, signingCertificate);
builder.Request = req.OuterXml;
AuditLogging.logEntry(Direction.OUT, Operation.AUTHNREQUEST_POST);
builder.GetPage().ProcessRequest(context);
return;
}
if (destination.Binding == SAMLBinding.ARTIFACT)
{
Trace.TraceData(TraceEventType.Information, string.Format(Tracing.SendAuthnRequest, Saml20Constants.ProtocolBindings.HTTP_Artifact, idpEndpoint.Id));
HttpArtifactBindingBuilder builder = new HttpArtifactBindingBuilder(context);
//Honor the ForceProtocolBinding and only set this if it's not already set
if (string.IsNullOrEmpty(request.ProtocolBinding))
{
request.ProtocolBinding = Saml20Constants.ProtocolBindings.HTTP_Artifact;
}
AuditLogging.logEntry(Direction.OUT, Operation.AUTHNREQUEST_REDIRECT_ARTIFACT);
builder.RedirectFromLogin(idpEndpoint, destination, request);
}
HandleError(context, Resources.BindingError);
}
/// <summary>
/// Handles the request.
/// </summary>
/// <param name="context">The context.</param>
private void HandleRequest(HttpContext context)
{
Logger.DebugFormat(TraceMessages.LogoutRequestReceived);
// Fetch the endpoint configuration
var idp = IdpSelectionUtil.RetrieveIDPConfiguration((string)context.Session[IdpLoginSessionKey], ConfigurationFactory.Instance.Configuration);
var destination = IdpSelectionUtil.DetermineEndpointConfiguration(BindingType.Redirect, idp.Endpoints.DefaultLogoutEndpoint, idp.Metadata.IDPSLOEndpoints);
// Fetch config object
var config = ConfigurationFactory.Instance.Configuration;
// Build the response object
var response = new Saml20LogoutResponse
{
Issuer = config.ServiceProvider.Id,
Destination = destination.Url,
StatusCode = Saml20Constants.StatusCodes.Success
};
string message;
if (context.Request.RequestType == "GET")
{
// HTTP Redirect binding
var parser = new HttpRedirectBindingParser(context.Request.Url);
Logger.DebugFormat(TraceMessages.LogoutRequestRedirectBindingParse, parser.Message, parser.SignatureAlgorithm, parser.Signature);
var endpoint = config.IdentityProviders.FirstOrDefault(x => x.Id == idp.Id);
if (endpoint == null || endpoint.Metadata == null)
{
Logger.ErrorFormat(ErrorMessages.UnknownIdentityProvider, idp.Id);
throw new Saml20Exception(string.Format(ErrorMessages.UnknownIdentityProvider, idp.Id));
}
var metadata = endpoint.Metadata;
if (!parser.VerifySignature(metadata.GetKeys(KeyTypes.Signing)))
{
Logger.Error(ErrorMessages.RequestSignatureInvalid);
throw new Saml20Exception(ErrorMessages.RequestSignatureInvalid);
}
message = parser.Message;
}
else if (context.Request.RequestType == "POST")
{
// HTTP Post binding
var parser = new HttpPostBindingParser(context.Request.Params);
Logger.DebugFormat(TraceMessages.LogoutRequestPostBindingParse, parser.Message);
if (!parser.IsSigned)
{
Logger.Error(ErrorMessages.RequestSignatureMissing);
throw new Saml20Exception(ErrorMessages.RequestSignatureMissing);
}
var endpoint = config.IdentityProviders.FirstOrDefault(x => x.Id == idp.Id);
if (endpoint == null || endpoint.Metadata == null)
{
Logger.ErrorFormat(ErrorMessages.UnknownIdentityProvider, idp.Id);
throw new Saml20Exception(string.Format(ErrorMessages.UnknownIdentityProvider, idp.Id));
}
var metadata = endpoint.Metadata;
// Check signature
if (!parser.CheckSignature(metadata.GetKeys(KeyTypes.Signing)))
{
Logger.Error(ErrorMessages.RequestSignatureInvalid);
throw new Saml20Exception(ErrorMessages.RequestSignatureInvalid);
}
message = parser.Message;
}
else
{
// Error: We don't support HEAD, PUT, CONNECT, TRACE, DELETE and OPTIONS
Logger.ErrorFormat(ErrorMessages.UnsupportedRequestType, context.Request.RequestType);
throw new Saml20Exception(string.Format(ErrorMessages.UnsupportedRequestType, context.Request.RequestType));
}
Logger.DebugFormat(TraceMessages.LogoutRequestParsed, message);
// Log the user out locally
DoLogout(context, true);
var req = Serialization.DeserializeFromXmlString <LogoutRequest>(message);
response.InResponseTo = req.Id;
// Respond using redirect binding
if (destination.Binding == BindingType.Redirect)
{
var builder = new HttpRedirectBindingBuilder
{
RelayState = context.Request.Params["RelayState"],
Response = response.GetXml().OuterXml,
SigningKey = config.ServiceProvider.SigningCertificate.PrivateKey
};
Logger.DebugFormat(TraceMessages.LogoutResponseSent, builder.Response);
context.Response.Redirect(destination.Url + "?" + builder.ToQuery(), true);
return;
}
// Respond using post binding
if (destination.Binding == BindingType.Post)
{
var builder = new HttpPostBindingBuilder(destination)
{
Action = SamlActionType.SAMLResponse
};
var responseDocument = response.GetXml();
Logger.DebugFormat(TraceMessages.LogoutResponseSent, responseDocument.OuterXml);
XmlSignatureUtils.SignDocument(responseDocument, response.Id, config);
builder.Response = responseDocument.OuterXml;
builder.RelayState = context.Request.Params["RelayState"];
context.Response.Write(builder.GetPage());
}
}
private void HandleRequest(HttpContext context)
{
Trace.TraceMethodCalled(GetType(), "HandleRequest()");
//Fetch config object
SAML20FederationConfig config = SAML20FederationConfig.GetConfig();
LogoutRequest logoutRequest = null;
IDPEndPoint endpoint = null;
string message = string.Empty;
//Build the response object
var response = new Saml20LogoutResponse();
response.Issuer = config.ServiceProvider.ID;
response.StatusCode = Saml20Constants.StatusCodes.Success; // Default success. Is overwritten if something fails.
if (context.Request.RequestType == "GET") // HTTP Redirect binding
{
HttpRedirectBindingParser parser = new HttpRedirectBindingParser(context.Request.Url);
AuditLogging.logEntry(Direction.IN, Operation.LOGOUTREQUEST,
string.Format("Binding: redirect, Signature algorithm: {0} Signature: {1}, Message: {2}", parser.SignatureAlgorithm, parser.Signature, parser.Message));
if (!parser.IsSigned)
{
AuditLogging.logEntry(Direction.IN, Operation.LOGOUTREQUEST, "Signature not present, msg: " + parser.Message);
response.StatusCode = Saml20Constants.StatusCodes.RequestDenied;
}
logoutRequest = parser.LogoutRequest;
endpoint = config.FindEndPoint(logoutRequest.Issuer.Value);
if (endpoint.metadata == null)
{
AuditLogging.logEntry(Direction.IN, Operation.LOGOUTREQUEST, "Cannot find metadata for IdP: " + logoutRequest.Issuer.Value);
// Not able to return a response as we do not know the IdP.
HandleError(context, "Cannot find metadata for IdP " + logoutRequest.Issuer.Value);
return;
}
Saml20MetadataDocument metadata = endpoint.metadata;
if (!parser.VerifySignature(metadata.GetKeys(KeyTypes.signing)))
{
AuditLogging.logEntry(Direction.IN, Operation.LOGOUTREQUEST, "Request has been denied. Invalid signature redirect-binding, msg: " + parser.Message);
response.StatusCode = Saml20Constants.StatusCodes.RequestDenied;
}
message = parser.Message;
}
else if (context.Request.RequestType == "POST") // HTTP Post binding
{
HttpPostBindingParser parser = new HttpPostBindingParser(context);
AuditLogging.logEntry(Direction.IN, Operation.LOGOUTREQUEST,
"Binding: POST, Message: " + parser.Message);
if (!parser.IsSigned())
{
AuditLogging.logEntry(Direction.IN, Operation.LOGOUTREQUEST, "Signature not present, msg: " + parser.Message);
response.StatusCode = Saml20Constants.StatusCodes.RequestDenied;
}
logoutRequest = parser.LogoutRequest;
endpoint = config.FindEndPoint(logoutRequest.Issuer.Value);
if (endpoint.metadata == null)
{
AuditLogging.logEntry(Direction.IN, Operation.LOGOUTREQUEST, "Cannot find metadata for IdP");
// Not able to return a response as we do not know the IdP.
HandleError(context, "Cannot find metadata for IdP " + logoutRequest.Issuer.Value);
return;
}
if (logoutRequest.NotOnOrAfter.HasValue)
{
var allowedClockSkewTime = DateTime.UtcNow.AddMinutes(FederationConfig.GetConfig().AllowedClockSkewMinutes);
if (logoutRequest.NotOnOrAfter >= allowedClockSkewTime)
{
var errormessage =
$"Logout request NotOnOrAfter ({logoutRequest.NotOnOrAfter}) is after allowed time ({allowedClockSkewTime})";
AuditLogging.logEntry(Direction.IN, Operation.LOGOUTREQUEST, errormessage);
HandleError(context, errormessage);
return;
}
}
Saml20MetadataDocument metadata = endpoint.metadata;
// handle a logout-request
if (!parser.CheckSignature(metadata.GetKeys(KeyTypes.signing)))
{
AuditLogging.logEntry(Direction.IN, Operation.LOGOUTREQUEST, "Request has been denied. Invalid signature post-binding, msg: " + parser.Message);
response.StatusCode = Saml20Constants.StatusCodes.RequestDenied;
}
message = parser.Message;
}
else
{
//Error: We don't support HEAD, PUT, CONNECT, TRACE, DELETE and OPTIONS
// Not able to return a response as we do not understand the request.
HandleError(context, string.Format(Resources.UnsupportedRequestType, context.Request.RequestType));
return;
}
AuditLogging.logEntry(Direction.IN, Operation.LOGOUTREQUEST, message);
// Check that idp in session and request matches.
string idpRequest = logoutRequest.Issuer.Value;
// SessionFactory.SessionContext.Current.New is never the first call to Current due to the logic in Application_AuthenticateRequest() ... Saml20Identity.IsInitialized()
// Hence we need to check on Saml20Identity.IsInitialized() instead of using SessionFactory.SessionContext.Current.New.
bool isOioSamlSessionActive = Saml20Identity.IsInitialized();
if (isOioSamlSessionActive)
{
object idpId = Saml20PrincipalCache.GetSaml20AssertionLite().Issuer;
if (idpId != null && idpId.ToString() != idpRequest)
{
AuditLogging.logEntry(Direction.IN, Operation.LOGOUTREQUEST, string.Format(Resources.IdPMismatchBetweenRequestAndSession, idpId, idpRequest), message);
response.StatusCode = Saml20Constants.StatusCodes.RequestDenied;
}
}
else
{
// All other status codes than Success results in the IdP throwing an error page. Therefore we return default Success even if we do not have a session.
AuditLogging.logEntry(Direction.IN, Operation.LOGOUTREQUEST, "Session does not exist. Continues the redirect logout procedure with status code success." + idpRequest, message);
}
// Only logout if request is valid and we are working on an existing Session.
if (Saml20Constants.StatusCodes.Success == response.StatusCode && isOioSamlSessionActive)
{
// Execute all actions that the service provider has configured
DoLogout(context, true);
}
// Update the response object with informations that first is available when request has been parsed.
IDPEndPointElement destination = DetermineEndpointConfiguration(SAMLBinding.REDIRECT, endpoint.SLOEndpoint, endpoint.metadata.SLOEndpoints());
response.Destination = destination.Url;
response.InResponseTo = logoutRequest.ID;
//Respond using redirect binding
var shaHashingAlgorithm = SignatureProviderFactory.ValidateShaHashingAlgorithm(endpoint.ShaHashingAlgorithm);
if (destination.Binding == SAMLBinding.REDIRECT)
{
HttpRedirectBindingBuilder builder = new HttpRedirectBindingBuilder();
builder.RelayState = context.Request.Params["RelayState"];
builder.Response = response.GetXml().OuterXml;
builder.signingKey = FederationConfig.GetConfig().SigningCertificate.GetCertificate().PrivateKey;
builder.ShaHashingAlgorithm = shaHashingAlgorithm;
string s = destination.Url + "?" + builder.ToQuery();
context.Response.Redirect(s, true);
return;
}
//Respond using post binding
if (destination.Binding == SAMLBinding.POST)
{
HttpPostBindingBuilder builder = new HttpPostBindingBuilder(destination);
builder.Action = SAMLAction.SAMLResponse;
XmlDocument responseDocument = response.GetXml();
var signingCertificate = FederationConfig.GetConfig().SigningCertificate.GetCertificate();
var signatureProvider = SignatureProviderFactory.CreateFromShaHashingAlgorithmName(shaHashingAlgorithm);
signatureProvider.SignAssertion(responseDocument, response.ID, signingCertificate);
builder.Response = responseDocument.OuterXml;
builder.RelayState = context.Request.Params["RelayState"];
builder.GetPage().ProcessRequest(context);
return;
}
}
/// <summary>
/// Transfers the client.
/// </summary>
/// <param name="idp">The identity provider.</param>
/// <param name="context">The context.</param>
private void TransferClient(IdentityProvider idp, HttpContext context, Saml2Configuration config)
{
var request = Saml20LogoutRequest.GetDefault(config);
// Determine which endpoint to use from the configuration file or the endpoint metadata.
var destination = IdpSelectionUtil.DetermineEndpointConfiguration(BindingType.Redirect, idp.Endpoints.DefaultLogoutEndpoint, idp.Metadata.IDPSLOEndpoints);
request.Destination = destination.Url;
var nameIdFormat = (string)context.Session[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 = (string)context.Session[IdpNameId];
request.SessionIndex = (string)context.Session[IdpSessionIdKey];
var requestDocument = request.GetXml();
XmlSignatureUtils.SignDocument(requestDocument, request.Id, config);
builder.Request = requestDocument.OuterXml;
Logger.DebugFormat(TraceMessages.LogoutRequestSent, idp.Id, "POST", builder.Request);
context.Response.Write(builder.GetPage());
context.Response.End();
return;
}
// Handle Redirect binding
if (destination.Binding == BindingType.Redirect)
{
request.Destination = destination.Url;
request.Reason = Saml20Constants.Reasons.User;
request.SubjectToLogOut.Value = (string)context.Session[IdpNameId];
request.SessionIndex = (string)context.Session[IdpSessionIdKey];
var builder = new HttpRedirectBindingBuilder
{
Request = request.GetXml().OuterXml,
SigningKey = config.ServiceProvider.SigningCertificate.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 = (string)context.Session[IdpNameId];
request.SessionIndex = (string)context.Session[IdpSessionIdKey];
Logger.DebugFormat(TraceMessages.LogoutRequestSent, idp.Id, "ARTIFACT", request.GetXml().OuterXml);
var builder = GetBuilder(context);
builder.RedirectFromLogout(destination, request, Guid.NewGuid().ToString("N"), (s, o) => context.Cache.Insert(s, o, null, DateTime.Now.AddMinutes(1), Cache.NoSlidingExpiration));
}
Logger.Error(ErrorMessages.EndpointBindingInvalid);
throw new Saml20Exception(ErrorMessages.EndpointBindingInvalid);
}
