/// <summary>
/// Initializes a new instance of the <see cref="NegativeAuthenticationResponse"/> class.
/// </summary>
/// <param name="response">The negative assertion response received by the Relying Party.</param>
/// ERIC'S CODE
//internal NegativeAuthenticationResponse(NegativeAssertionResponse response) {
public NegativeAuthenticationResponse(NegativeAssertionResponse response)
{
Requires.NotNull(response, "response");
this.response = response;
Reporting.RecordEventOccurrence(this, string.Empty);
}
/// <summary>
/// Initializes a new instance of the <see cref="NegativeAuthenticationResponse"/> class.
/// </summary>
/// <param name="response">The negative assertion response received by the Relying Party.</param>
internal NegativeAuthenticationResponse(NegativeAssertionResponse response)
{
Contract.Requires <ArgumentNullException>(response != null);
this.response = response;
Reporting.RecordEventOccurrence(this, string.Empty);
}
/// <summary>
/// Initializes a new instance of the <see cref="HostProcessedRequest"/> class.
/// </summary>
/// <param name="provider">The provider that received the request.</param>
/// <param name="request">The incoming request message.</param>
protected HostProcessedRequest(OpenIdProvider provider, SignedResponseRequest request)
: base(request, provider.SecuritySettings)
{
Contract.Requires <ArgumentNullException>(provider != null);
this.negativeResponse = new NegativeAssertionResponse(request, provider.Channel);
Reporting.RecordEventOccurrence(this, request.Realm);
}
/// <summary>
/// Initializes a new instance of the <see cref="HostProcessedRequest"/> class.
/// </summary>
/// <param name="provider">The provider that received the request.</param>
/// <param name="request">The incoming request message.</param>
protected HostProcessedRequest(OpenIdProvider provider, SignedResponseRequest request)
: base(request, provider.SecuritySettings)
{
Requires.NotNull(provider, "provider");
this.negativeResponse = new NegativeAssertionResponse(request, provider.Channel);
Reporting.RecordEventOccurrence(this, request.Realm);
}
public override void SetUp()
{
base.SetUp();
this.protocol = Protocol.Default;
this.responseMessage = new NegativeAssertionResponse(this.protocol.Version, RPUri, this.protocol.Args.Mode.cancel);
this.responseMessage.ExtraData[AuthenticationRequest.UserSuppliedIdentifierParameterName] = UserSuppliedIdentifier;
this.response = new NegativeAuthenticationResponse(this.responseMessage);
}
public void UserSetupUrlSetForV1Immediate()
{
var immediateRequestV1 = new CheckIdRequest(Protocol.V10.Version, OPUri, AuthenticationRequestMode.Immediate);
immediateRequestV1.ReturnTo = RPUri;
var response = new NegativeAssertionResponse(immediateRequestV1);
response.UserSetupUrl = new Uri("http://usersetup");
response.EnsureValidMessage();
}
/// <summary>
/// Analyzes an incoming request message payload to discover what kind of
/// message is embedded in it and returns the type, or null if no match is found.
/// </summary>
/// <param name="recipient">The intended or actual recipient of the request message.</param>
/// <param name="fields">The name/value pairs that make up the message payload.</param>
/// <returns>
/// A newly instantiated <see cref="IProtocolMessage"/>-derived object that this message can
/// deserialize to. Null if the request isn't recognized as a valid protocol message.
/// </returns>
public IDirectedProtocolMessage GetNewRequestMessage(MessageReceivingEndpoint recipient, IDictionary <string, string> fields)
{
RequestBase message = null;
// Discern the OpenID version of the message.
Protocol protocol = Protocol.V11;
string ns;
if (fields.TryGetValue(Protocol.V20.openid.ns, out ns))
{
ErrorUtilities.VerifyProtocol(string.Equals(ns, Protocol.OpenId2Namespace, StringComparison.Ordinal), MessagingStrings.UnexpectedMessagePartValue, Protocol.V20.openid.ns, ns);
protocol = Protocol.V20;
}
string mode;
if (fields.TryGetValue(protocol.openid.mode, out mode))
{
if (string.Equals(mode, protocol.Args.Mode.cancel) ||
(string.Equals(mode, protocol.Args.Mode.setup_needed) && (protocol.Version.Major >= 2 || fields.ContainsKey(protocol.openid.user_setup_url))))
{
message = new NegativeAssertionResponse(protocol.Version, recipient.Location, mode);
}
else if (string.Equals(mode, protocol.Args.Mode.id_res))
{
if (fields.ContainsKey(protocol.openid.identity))
{
message = new PositiveAssertionResponse(protocol.Version, recipient.Location);
}
else
{
ErrorUtilities.VerifyProtocol(!fields.ContainsKey(protocol.openid.claimed_id), OpenIdStrings.IdentityAndClaimedIdentifierMustBeBothPresentOrAbsent);
message = new IndirectSignedResponse(protocol.Version, recipient.Location);
}
}
else if (string.Equals(mode, protocol.Args.Mode.error))
{
message = new IndirectErrorResponse(protocol.Version, recipient.Location);
}
else
{
ErrorUtilities.ThrowProtocol(MessagingStrings.UnexpectedMessagePartValue, protocol.openid.mode, mode);
}
}
if (message != null)
{
message.SetAsIncoming();
}
return(message);
}
public void ImmediateVsSetupModes()
{
this.responseMessage = new NegativeAssertionResponse(this.protocol.Version, RPUri, this.protocol.Args.Mode.cancel);
this.response = new NegativeAuthenticationResponse(this.responseMessage);
Assert.AreEqual(AuthenticationStatus.Canceled, this.response.Status);
try {
Assert.AreEqual(UserSuppliedIdentifier, this.response.UserSuppliedIdentifier);
Assert.Fail("Expected InvalidOperationException not thrown.");
} catch (InvalidOperationException) {
}
this.responseMessage = new NegativeAssertionResponse(this.protocol.Version, RPUri, this.protocol.Args.Mode.setup_needed);
this.responseMessage.ExtraData[AuthenticationRequest.UserSuppliedIdentifierParameterName] = UserSuppliedIdentifier;
this.response = new NegativeAuthenticationResponse(this.responseMessage);
Assert.AreEqual(AuthenticationStatus.SetupRequired, this.response.Status);
Assert.AreEqual(UserSuppliedIdentifier, (string)this.response.UserSuppliedIdentifier);
}
/// <summary>
/// Initializes a new instance of the <see cref="AuthenticationRequest"/> class.
/// </summary>
/// <param name="provider">The provider that received the request.</param>
/// <param name="request">The incoming authentication request message.</param>
internal AuthenticationRequest(OpenIdProvider provider, CheckIdRequest request)
: base(provider, request)
{
this.positiveResponse = new PositiveAssertionResponse(request);
this.negativeResponse = new NegativeAssertionResponse(request, provider.Channel);
if (this.ClaimedIdentifier == Protocol.ClaimedIdentifierForOPIdentifier &&
Protocol.ClaimedIdentifierForOPIdentifier != null)
{
// Force the hosting OP to deal with identifier_select by nulling out the two identifiers.
this.IsDirectedIdentity = true;
this.positiveResponse.ClaimedIdentifier = null;
this.positiveResponse.LocalIdentifier = null;
}
// URL delegation is only detectable from 2.0 RPs, since openid.claimed_id isn't included from 1.0 RPs.
// If the openid.claimed_id is present, and if it's different than the openid.identity argument, then
// the RP has discovered a claimed identifier that has delegated authentication to this Provider.
this.IsDelegatedIdentifier = this.ClaimedIdentifier != null && this.ClaimedIdentifier != this.LocalIdentifier;
}
private async Task ParameterizedAuthenticationTestAsync(Protocol protocol, bool statelessRP, bool sharedAssociation, bool positive, bool immediate, bool tamper)
{
Requires.That(!statelessRP || !sharedAssociation, null, "The RP cannot be stateless while sharing an association with the OP.");
Requires.That(positive || !tamper, null, "Cannot tamper with a negative response.");
var securitySettings = new ProviderSecuritySettings();
var cryptoKeyStore = new MemoryCryptoKeyStore();
var associationStore = new ProviderAssociationHandleEncoder(cryptoKeyStore);
Association association = sharedAssociation ? HmacShaAssociationProvider.Create(protocol, protocol.Args.SignatureAlgorithm.Best, AssociationRelyingPartyType.Smart, associationStore, securitySettings) : null;
int opStep = 0;
HandleProvider(
async(op, req) => {
if (association != null)
{
var key = cryptoKeyStore.GetCurrentKey(
ProviderAssociationHandleEncoder.AssociationHandleEncodingSecretBucket, TimeSpan.FromSeconds(1));
op.CryptoKeyStore.StoreKey(
ProviderAssociationHandleEncoder.AssociationHandleEncodingSecretBucket, key.Key, key.Value);
}
switch (++opStep)
{
case 1:
var request = await op.Channel.ReadFromRequestAsync <CheckIdRequest>(req, CancellationToken.None);
Assert.IsNotNull(request);
IProtocolMessage response;
if (positive)
{
response = new PositiveAssertionResponse(request);
}
else
{
response = await NegativeAssertionResponse.CreateAsync(request, CancellationToken.None, op.Channel);
}
return(await op.Channel.PrepareResponseAsync(response));
case 2:
if (positive && (statelessRP || !sharedAssociation))
{
var checkauthRequest =
await op.Channel.ReadFromRequestAsync <CheckAuthenticationRequest>(req, CancellationToken.None);
var checkauthResponse = new CheckAuthenticationResponse(checkauthRequest.Version, checkauthRequest);
checkauthResponse.IsValid = checkauthRequest.IsValid;
return(await op.Channel.PrepareResponseAsync(checkauthResponse));
}
throw Assumes.NotReachable();
case 3:
if (positive && (statelessRP || !sharedAssociation))
{
if (!tamper)
{
// Respond to the replay attack.
var checkauthRequest =
await op.Channel.ReadFromRequestAsync <CheckAuthenticationRequest>(req, CancellationToken.None);
var checkauthResponse = new CheckAuthenticationResponse(checkauthRequest.Version, checkauthRequest);
checkauthResponse.IsValid = checkauthRequest.IsValid;
return(await op.Channel.PrepareResponseAsync(checkauthResponse));
}
}
throw Assumes.NotReachable();
default:
throw Assumes.NotReachable();
}
});
{
var rp = this.CreateRelyingParty(statelessRP);
if (tamper)
{
rp.Channel.IncomingMessageFilter = message => {
var assertion = message as PositiveAssertionResponse;
if (assertion != null)
{
// Alter the Local Identifier between the Provider and the Relying Party.
// If the signature binding element does its job, this should cause the RP
// to throw.
assertion.LocalIdentifier = "http://victim";
}
};
}
var request = new CheckIdRequest(
protocol.Version, OPUri, immediate ? AuthenticationRequestMode.Immediate : AuthenticationRequestMode.Setup);
if (association != null)
{
StoreAssociation(rp, OPUri, association);
request.AssociationHandle = association.Handle;
}
request.ClaimedIdentifier = "http://claimedid";
request.LocalIdentifier = "http://localid";
request.ReturnTo = RPUri;
request.Realm = RPUri;
var redirectRequest = await rp.Channel.PrepareResponseAsync(request);
Uri redirectResponse;
this.HostFactories.AllowAutoRedirects = false;
using (var httpClient = rp.Channel.HostFactories.CreateHttpClient()) {
using (var response = await httpClient.GetAsync(redirectRequest.Headers.Location)) {
Assert.That(response.StatusCode, Is.EqualTo(HttpStatusCode.Redirect));
redirectResponse = response.Headers.Location;
}
}
var assertionMessage = new HttpRequestMessage(HttpMethod.Get, redirectResponse);
if (positive)
{
if (tamper)
{
try {
await rp.Channel.ReadFromRequestAsync <PositiveAssertionResponse>(assertionMessage, CancellationToken.None);
Assert.Fail("Expected exception {0} not thrown.", typeof(InvalidSignatureException).Name);
} catch (InvalidSignatureException) {
TestLogger.InfoFormat(
"Caught expected {0} exception after tampering with signed data.", typeof(InvalidSignatureException).Name);
}
}
else
{
var response =
await rp.Channel.ReadFromRequestAsync <PositiveAssertionResponse>(assertionMessage, CancellationToken.None);
Assert.IsNotNull(response);
Assert.AreEqual(request.ClaimedIdentifier, response.ClaimedIdentifier);
Assert.AreEqual(request.LocalIdentifier, response.LocalIdentifier);
Assert.AreEqual(request.ReturnTo, response.ReturnTo);
// Attempt to replay the message and verify that it fails.
// Because in various scenarios and protocol versions different components
// notice the replay, we can get one of two exceptions thrown.
// When the OP notices the replay we get a generic InvalidSignatureException.
// When the RP notices the replay we get a specific ReplayMessageException.
try {
await rp.Channel.ReadFromRequestAsync <PositiveAssertionResponse>(assertionMessage, CancellationToken.None);
Assert.Fail("Expected ProtocolException was not thrown.");
} catch (ProtocolException ex) {
Assert.IsTrue(
ex is ReplayedMessageException || ex is InvalidSignatureException,
"A {0} exception was thrown instead of the expected {1} or {2}.",
ex.GetType(),
typeof(ReplayedMessageException).Name,
typeof(InvalidSignatureException).Name);
}
}
}
else
{
var response =
await rp.Channel.ReadFromRequestAsync <NegativeAssertionResponse>(assertionMessage, CancellationToken.None);
Assert.IsNotNull(response);
if (immediate)
{
// Only 1.1 was required to include user_setup_url
if (protocol.Version.Major < 2)
{
Assert.IsNotNull(response.UserSetupUrl);
}
}
else
{
Assert.IsNull(response.UserSetupUrl);
}
}
}
}
/// <summary>
/// Analyzes an incoming request message payload to discover what kind of
/// message is embedded in it and returns the type, or null if no match is found.
/// </summary>
/// <param name="recipient">The intended or actual recipient of the request message.</param>
/// <param name="fields">The name/value pairs that make up the message payload.</param>
/// <returns>
/// A newly instantiated <see cref="IProtocolMessage"/>-derived object that this message can
/// deserialize to. Null if the request isn't recognized as a valid protocol message.
/// </returns>
public IDirectedProtocolMessage GetNewRequestMessage(MessageReceivingEndpoint recipient, IDictionary <string, string> fields)
{
ErrorUtilities.VerifyArgumentNotNull(recipient, "recipient");
ErrorUtilities.VerifyArgumentNotNull(fields, "fields");
RequestBase message = null;
// Discern the OpenID version of the message.
Protocol protocol = Protocol.V11;
string ns;
if (fields.TryGetValue(Protocol.V20.openid.ns, out ns))
{
ErrorUtilities.VerifyProtocol(string.Equals(ns, Protocol.OpenId2Namespace, StringComparison.Ordinal), MessagingStrings.UnexpectedMessagePartValue, Protocol.V20.openid.ns, ns);
protocol = Protocol.V20;
}
string mode;
if (fields.TryGetValue(protocol.openid.mode, out mode))
{
if (string.Equals(mode, protocol.Args.Mode.associate))
{
if (fields.ContainsKey(protocol.openid.dh_consumer_public))
{
message = new AssociateDiffieHellmanRequest(protocol.Version, recipient.Location);
}
else
{
message = new AssociateUnencryptedRequest(protocol.Version, recipient.Location);
}
}
else if (string.Equals(mode, protocol.Args.Mode.checkid_setup) ||
string.Equals(mode, protocol.Args.Mode.checkid_immediate))
{
AuthenticationRequestMode authMode = string.Equals(mode, protocol.Args.Mode.checkid_immediate) ? AuthenticationRequestMode.Immediate : AuthenticationRequestMode.Setup;
if (fields.ContainsKey(protocol.openid.identity))
{
message = new CheckIdRequest(protocol.Version, recipient.Location, authMode);
}
else
{
message = new SignedResponseRequest(protocol.Version, recipient.Location, authMode);
}
}
else if (string.Equals(mode, protocol.Args.Mode.cancel) ||
(string.Equals(mode, protocol.Args.Mode.setup_needed) && (protocol.Version.Major >= 2 || fields.ContainsKey(protocol.openid.user_setup_url))))
{
message = new NegativeAssertionResponse(protocol.Version, recipient.Location, mode);
}
else if (string.Equals(mode, protocol.Args.Mode.id_res))
{
if (fields.ContainsKey(protocol.openid.identity))
{
message = new PositiveAssertionResponse(protocol.Version, recipient.Location);
}
else
{
message = new IndirectSignedResponse(protocol.Version, recipient.Location);
}
}
else if (string.Equals(mode, protocol.Args.Mode.check_authentication))
{
message = new CheckAuthenticationRequest(protocol.Version, recipient.Location);
}
else if (string.Equals(mode, protocol.Args.Mode.error))
{
message = new IndirectErrorResponse(protocol.Version, recipient.Location);
}
else
{
ErrorUtilities.ThrowProtocol(MessagingStrings.UnexpectedMessagePartValue, protocol.openid.mode, mode);
}
}
if (message != null)
{
message.SetAsIncoming();
}
return(message);
}
private void ParameterizedAuthenticationTest(Protocol protocol, bool statelessRP, bool sharedAssociation, bool positive, bool immediate, bool tamper)
{
Requires.True(!statelessRP || !sharedAssociation, null, "The RP cannot be stateless while sharing an association with the OP.");
Requires.True(positive || !tamper, null, "Cannot tamper with a negative response.");
var securitySettings = new ProviderSecuritySettings();
var cryptoKeyStore = new MemoryCryptoKeyStore();
var associationStore = new ProviderAssociationHandleEncoder(cryptoKeyStore);
Association association = sharedAssociation ? HmacShaAssociationProvider.Create(protocol, protocol.Args.SignatureAlgorithm.Best, AssociationRelyingPartyType.Smart, associationStore, securitySettings) : null;
var coordinator = new OpenIdCoordinator(
rp => {
var request = new CheckIdRequest(protocol.Version, OPUri, immediate ? AuthenticationRequestMode.Immediate : AuthenticationRequestMode.Setup);
if (association != null)
{
StoreAssociation(rp, OPUri, association);
request.AssociationHandle = association.Handle;
}
request.ClaimedIdentifier = "http://claimedid";
request.LocalIdentifier = "http://localid";
request.ReturnTo = RPUri;
request.Realm = RPUri;
rp.Channel.Respond(request);
if (positive)
{
if (tamper)
{
try {
rp.Channel.ReadFromRequest <PositiveAssertionResponse>();
Assert.Fail("Expected exception {0} not thrown.", typeof(InvalidSignatureException).Name);
} catch (InvalidSignatureException) {
TestLogger.InfoFormat("Caught expected {0} exception after tampering with signed data.", typeof(InvalidSignatureException).Name);
}
}
else
{
var response = rp.Channel.ReadFromRequest <PositiveAssertionResponse>();
Assert.IsNotNull(response);
Assert.AreEqual(request.ClaimedIdentifier, response.ClaimedIdentifier);
Assert.AreEqual(request.LocalIdentifier, response.LocalIdentifier);
Assert.AreEqual(request.ReturnTo, response.ReturnTo);
// Attempt to replay the message and verify that it fails.
// Because in various scenarios and protocol versions different components
// notice the replay, we can get one of two exceptions thrown.
// When the OP notices the replay we get a generic InvalidSignatureException.
// When the RP notices the replay we get a specific ReplayMessageException.
try {
CoordinatingChannel channel = (CoordinatingChannel)rp.Channel;
channel.Replay(response);
Assert.Fail("Expected ProtocolException was not thrown.");
} catch (ProtocolException ex) {
Assert.IsTrue(ex is ReplayedMessageException || ex is InvalidSignatureException, "A {0} exception was thrown instead of the expected {1} or {2}.", ex.GetType(), typeof(ReplayedMessageException).Name, typeof(InvalidSignatureException).Name);
}
}
}
else
{
var response = rp.Channel.ReadFromRequest <NegativeAssertionResponse>();
Assert.IsNotNull(response);
if (immediate)
{
// Only 1.1 was required to include user_setup_url
if (protocol.Version.Major < 2)
{
Assert.IsNotNull(response.UserSetupUrl);
}
}
else
{
Assert.IsNull(response.UserSetupUrl);
}
}
},
op => {
if (association != null)
{
var key = cryptoKeyStore.GetCurrentKey(ProviderAssociationHandleEncoder.AssociationHandleEncodingSecretBucket, TimeSpan.FromSeconds(1));
op.CryptoKeyStore.StoreKey(ProviderAssociationHandleEncoder.AssociationHandleEncodingSecretBucket, key.Key, key.Value);
}
var request = op.Channel.ReadFromRequest <CheckIdRequest>();
Assert.IsNotNull(request);
IProtocolMessage response;
if (positive)
{
response = new PositiveAssertionResponse(request);
}
else
{
response = new NegativeAssertionResponse(request, op.Channel);
}
op.Channel.Respond(response);
if (positive && (statelessRP || !sharedAssociation))
{
var checkauthRequest = op.Channel.ReadFromRequest <CheckAuthenticationRequest>();
var checkauthResponse = new CheckAuthenticationResponse(checkauthRequest.Version, checkauthRequest);
checkauthResponse.IsValid = checkauthRequest.IsValid;
op.Channel.Respond(checkauthResponse);
if (!tamper)
{
// Respond to the replay attack.
checkauthRequest = op.Channel.ReadFromRequest <CheckAuthenticationRequest>();
checkauthResponse = new CheckAuthenticationResponse(checkauthRequest.Version, checkauthRequest);
checkauthResponse.IsValid = checkauthRequest.IsValid;
op.Channel.Respond(checkauthResponse);
}
}
});
if (tamper)
{
coordinator.IncomingMessageFilter = message => {
var assertion = message as PositiveAssertionResponse;
if (assertion != null)
{
// Alter the Local Identifier between the Provider and the Relying Party.
// If the signature binding element does its job, this should cause the RP
// to throw.
assertion.LocalIdentifier = "http://victim";
}
};
}
if (statelessRP)
{
coordinator.RelyingParty = new OpenIdRelyingParty(null);
}
coordinator.Run();
}
/// <summary>
/// Performs initialization common to construction and deserialization.
/// </summary>
/// <param name="provider">The provider.</param>
private void SharedInitialization(OpenIdProvider provider)
{
this.negativeResponse = new Lazy <Task <NegativeAssertionResponse> >(() => NegativeAssertionResponse.CreateAsync(this.RequestMessage, CancellationToken.None, provider.Channel));
}
/// <summary>
/// Initializes a new instance of the <see cref="NegativeAuthenticationResponse"/> class.
/// </summary>
/// <param name="response">The negative assertion response received by the Relying Party.</param>
internal NegativeAuthenticationResponse(NegativeAssertionResponse response)
{
ErrorUtilities.VerifyArgumentNotNull(response, "response");
this.response = response;
}