private SignInResponseMessage CreateResponse(SignInValidationResult validationResult, SecurityToken token)
{
var rstr = new RequestSecurityTokenResponse
{
AppliesTo = new EndpointReference(validationResult.Client.ClientId),
Context = validationResult.SignInRequestMessage.Context,
ReplyTo = validationResult.ReplyUrl,
RequestedSecurityToken = new RequestedSecurityToken(token)
};
//var serializer = new WSFederationSerializer(
// new WSTrust13RequestSerializer(),
// new WSTrust13ResponseSerializer());
// the asp.net core MW does currently not support WS-Trust 1.3
var serializer = new WSFederationSerializer(
new WSTrustFeb2005RequestSerializer(),
new WSTrustFeb2005ResponseSerializer());
var mgr = SecurityTokenHandlerCollectionManager.CreateEmptySecurityTokenHandlerCollectionManager();
mgr[SecurityTokenHandlerCollectionManager.Usage.Default] = CreateSupportedSecurityTokenHandler();
var responseMessage = new SignInResponseMessage(
new Uri(validationResult.ReplyUrl),
rstr,
serializer,
new WSTrustSerializationContext(mgr));
return(responseMessage);
}
public async Task <string> GenerateSerializedRstr(ValidatedWsFederationSigninRequest request)
{
var now = _clock.UtcNow.UtcDateTime;
var principal = request.Subject.Identity as ClaimsIdentity;
var nameIdClaim = principal.FindFirst(ClaimTypes.NameIdentifier);
if (nameIdClaim == null)
{
nameIdClaim = new Claim(ClaimTypes.NameIdentifier, principal.Name);
nameIdClaim.Properties.Add(ClaimProperties.SamlNameIdentifierFormat, Saml2Constants.NameIdentifierFormats.UnspecifiedString);
principal.AddClaim(nameIdClaim);
}
var tokenDescriptor = new SecurityTokenDescriptor
{
Audience = request.RequestMessage.Wtrealm,
Expires = now.AddSeconds(request.Client.IdentityTokenLifetime),
IssuedAt = now,
Issuer = _options.IssuerUri,
NotBefore = now,
SigningCredentials = await _keys.GetSigningCredentialsAsync(),
Subject = principal
};
//For whatever reason, the Digest method isn't specified in the builder extensions for identity server.
//Not a good solution to force the user to use th eoverload that takes SigningCredentials
//IdentityServer4/Configuration/DependencyInjection/BuilderExtensions/Crypto.cs
//Instead, it should be supported in:
// The overload that takes a X509Certificate2
// The overload that looks it up in a cert store
// The overload that takes an RsaSecurityKey
// AddDeveloperSigningCredential
//For now, this is a workaround.
if (tokenDescriptor.SigningCredentials.Digest == null)
{
_logger.LogInformation($"SigningCredentials does not have a digest specified. Using default digest algorithm of {SecurityAlgorithms.Sha256Digest}");
tokenDescriptor.SigningCredentials = new SigningCredentials(tokenDescriptor.SigningCredentials.Key, tokenDescriptor.SigningCredentials.Algorithm, SecurityAlgorithms.Sha256Digest);
}
_logger.LogDebug("Creating SAML 2.0 security token.");
var tokenHandler = new Saml2SecurityTokenHandler();
var token = tokenHandler.CreateToken(tokenDescriptor);
_logger.LogDebug("Serializing RSTR.");
var rstr = new RequestSecurityTokenResponse
{
AppliesTo = new AppliesTo(request.RequestMessage.Wtrealm),
KeyType = "http://schemas.xmlsoap.org/ws/2005/05/identity/NoProofKey",
Lifetime = new Lifetime(now, now.AddSeconds(request.Client.IdentityTokenLifetime)),
RequestedSecurityToken = token,
RequestType = "http://schemas.xmlsoap.org/ws/2005/02/trust/Issue",
TokenType = "http://docs.oasis-open.org/wss/oasis-wss-saml-token-profile-1.1#SAMLV2.0"
};
return(RequestSecurityTokenResponseSerializer.Serialize(rstr));
}
public async Task <string> GenerateSerializedRstr(ValidatedWsFederationRequest request)
{
var now = _clock.UtcNow.UtcDateTime;
var credential = await _keys.GetSigningCredentialsAsync();
var key = credential.Key as X509SecurityKey;
var tokenDescriptor = new SecurityTokenDescriptor
{
Audience = request.RequestMessage.Wtrealm,
Expires = now.AddSeconds(request.Client.IdentityTokenLifetime),
IssuedAt = now,
Issuer = _options.IssuerUri,
NotBefore = now,
SigningCredentials = key == null ? credential : new X509SigningCredentials(key.Certificate, _federationOptions.DefaultSignatureAlgorithm),
Subject = await CreateSubjectAsync(request)
};
//For whatever reason, the Digest method isn't specified in the builder extensions for identity server.
//Not a good solution to force the user to use the overload that takes SigningCredentials
//IdentityServer4/Configuration/DependencyInjection/BuilderExtensions/Crypto.cs
//Instead, it should be supported in:
// The overload that takes a X509Certificate2
// The overload that looks it up in a cert store
// The overload that takes an RsaSecurityKey
// AddDeveloperSigningCredential
//For now, this is a workaround.
if (tokenDescriptor.SigningCredentials.Digest == null)
{
_logger.LogInformation($"SigningCredentials does not have a digest specified. Using default digest algorithm of {SecurityAlgorithms.Sha256Digest}");
tokenDescriptor.SigningCredentials = new SigningCredentials(tokenDescriptor.SigningCredentials.Key, tokenDescriptor.SigningCredentials.Algorithm ?? _federationOptions.DefaultSignatureAlgorithm, _federationOptions.DefaultDigestAlgorithm);
}
_logger.LogDebug("Creating SAML 2.0 security token.");
var tokenHandler = new Saml2SecurityTokenHandler();
var token = tokenHandler.CreateToken(tokenDescriptor);
_logger.LogDebug("Serializing RSTR.");
var rstr = new RequestSecurityTokenResponse
{
AppliesTo = new AppliesTo(request.RequestMessage.Wtrealm),
KeyType = "http://schemas.xmlsoap.org/ws/2005/05/identity/NoProofKey",
Lifetime = new Lifetime
{
Created = XmlConvert.ToString(now, XmlDateTimeSerializationMode.Utc),
Expires = XmlConvert.ToString(now.AddSeconds(request.Client.IdentityTokenLifetime), XmlDateTimeSerializationMode.Utc),
},
RequestedSecurityToken = token,
RequestType = "http://schemas.xmlsoap.org/ws/2005/02/trust/Issue",
TokenType = WsFederationConstants.TokenTypes.Saml2TokenProfile11
};
return(RequestSecurityTokenResponseSerializer.Serialize(rstr));
}
private WsFederationMessage CreateResponse(SignInValidationResult validationResult, SecurityToken token)
{
var handler = CreateTokenHandler(validationResult.RelyingParty.TokenType);
var rstr = new RequestSecurityTokenResponse
{
CreatedAt = token.ValidFrom,
ExpiresAt = token.ValidTo,
AppliesTo = validationResult.Client.ClientId,
Context = validationResult.WsFederationMessage.Wctx,
ReplyTo = validationResult.ReplyUrl,
RequestedSecurityToken = token,
SecurityTokenHandler = handler,
};
var responseMessage = new WsFederationMessage {
IssuerAddress = validationResult.Client.RedirectUris.First(),
Wa = Microsoft.IdentityModel.Protocols.WsFederation.WsFederationConstants.WsFederationActions.SignIn,
Wresult = rstr.Serialize(),
Wctx = validationResult.WsFederationMessage.Wctx
};
return(responseMessage);
}