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//-----------------------------------------------------------------------------
// Copyright (c) Microsoft Corporation. All rights reserved.
//-----------------------------------------------------------------------------
namespace System.ServiceModel.Security
{
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.IO;
using System.Runtime;
using System.ServiceModel;
using System.ServiceModel.Channels;
using System.ServiceModel.Description;
using System.ServiceModel.Security.Tokens;
using System.Xml;
abstract class WSSecurityPolicy
{
public static ContractDescription NullContract = new ContractDescription("null");
public static ServiceEndpoint NullServiceEndpoint = new ServiceEndpoint(NullContract);
public static XmlDocument doc = new XmlDocument();
public const string WsspPrefix = "sp";
public const string WspNamespace = MetadataStrings.WSPolicy.NamespaceUri; //@"http://schemas.xmlsoap.org/ws/2004/09/policy";
public const string Wsp15Namespace = MetadataStrings.WSPolicy.NamespaceUri15;
public const string WspPrefix = MetadataStrings.WSPolicy.Prefix; //"wsp";
public const string MsspNamespace = @"http://schemas.microsoft.com/ws/2005/07/securitypolicy";
public const string MsspPrefix = "mssp";
public const string PolicyName = MetadataStrings.WSPolicy.Elements.Policy; //"Policy";
public const string OptionalName = "Optional";
public const string TrueName = "true";
public const string FalseName = "false";
public const string SymmetricBindingName = "SymmetricBinding";
public const string AsymmetricBindingName = "AsymmetricBinding";
public const string TransportBindingName = "TransportBinding";
public const string OnlySignEntireHeadersAndBodyName = "OnlySignEntireHeadersAndBody";
public const string ProtectionTokenName = "ProtectionToken";
public const string InitiatorTokenName = "InitiatorToken";
public const string RecipientTokenName = "RecipientToken";
public const string TransportTokenName = "TransportToken";
public const string AlgorithmSuiteName = "AlgorithmSuite";
public const string LaxName = "Lax";
public const string LaxTsLastName = "LaxTsLast";
public const string LaxTsFirstName = "LaxTsFirst";
public const string StrictName = "Strict";
public const string IncludeTimestampName = "IncludeTimestamp";
public const string EncryptBeforeSigningName = "EncryptBeforeSigning";
public const string ProtectTokens = "ProtectTokens";
public const string EncryptSignatureName = "EncryptSignature";
public const string SignedSupportingTokensName = "SignedSupportingTokens";
public const string EndorsingSupportingTokensName = "EndorsingSupportingTokens";
public const string SignedEndorsingSupportingTokensName = "SignedEndorsingSupportingTokens";
public const string Wss10Name = "Wss10";
public const string MustSupportRefKeyIdentifierName = "MustSupportRefKeyIdentifier";
public const string MustSupportRefIssuerSerialName = "MustSupportRefIssuerSerial";
public const string MustSupportRefThumbprintName = "MustSupportRefThumbprint";
public const string MustSupportRefEncryptedKeyName = "MustSupportRefEncryptedKey";
public const string RequireSignatureConfirmationName = "RequireSignatureConfirmation";
public const string MustSupportIssuedTokensName = "MustSupportIssuedTokens";
public const string RequireClientEntropyName = "RequireClientEntropy";
public const string RequireServerEntropyName = "RequireServerEntropy";
public const string Wss11Name = "Wss11";
public const string Trust10Name = "Trust10";
public const string Trust13Name = "Trust13";
public const string RequireAppliesTo = "RequireAppliesTo";
public const string SignedPartsName = "SignedParts";
public const string EncryptedPartsName = "EncryptedParts";
public const string BodyName = "Body";
public const string HeaderName = "Header";
public const string NameName = "Name";
public const string NamespaceName = "Namespace";
public const string Basic128Name = "Basic128";
public const string Basic192Name = "Basic192";
public const string Basic256Name = "Basic256";
public const string TripleDesName = "TripleDes";
public const string Basic128Rsa15Name = "Basic128Rsa15";
public const string Basic192Rsa15Name = "Basic192Rsa15";
public const string Basic256Rsa15Name = "Basic256Rsa15";
public const string TripleDesRsa15Name = "TripleDesRsa15";
public const string Basic128Sha256Name = "Basic128Sha256";
public const string Basic192Sha256Name = "Basic192Sha256";
public const string Basic256Sha256Name = "Basic256Sha256";
public const string TripleDesSha256Name = "TripleDesSha256";
public const string Basic128Sha256Rsa15Name = "Basic128Sha256Rsa15";
public const string Basic192Sha256Rsa15Name = "Basic192Sha256Rsa15";
public const string Basic256Sha256Rsa15Name = "Basic256Sha256Rsa15";
public const string TripleDesSha256Rsa15Name = "TripleDesSha256Rsa15";
public const string IncludeTokenName = "IncludeToken";
public const string KerberosTokenName = "KerberosToken";
public const string X509TokenName = "X509Token";
public const string IssuedTokenName = "IssuedToken";
public const string UsernameTokenName = "UsernameToken";
public const string RsaTokenName = "RsaToken";
public const string KeyValueTokenName = "KeyValueToken";
public const string SpnegoContextTokenName = "SpnegoContextToken";
public const string SslContextTokenName = "SslContextToken";
public const string SecureConversationTokenName = "SecureConversationToken";
public const string WssGssKerberosV5ApReqToken11Name = "WssGssKerberosV5ApReqToken11";
public const string RequireDerivedKeysName = "RequireDerivedKeys";
public const string RequireIssuerSerialReferenceName = "RequireIssuerSerialReference";
public const string RequireKeyIdentifierReferenceName = "RequireKeyIdentifierReference";
public const string RequireThumbprintReferenceName = "RequireThumbprintReference";
public const string WssX509V3Token10Name = "WssX509V3Token10";
public const string WssUsernameToken10Name = "WssUsernameToken10";
public const string RequestSecurityTokenTemplateName = "RequestSecurityTokenTemplate";
public const string RequireExternalReferenceName = "RequireExternalReference";
public const string RequireInternalReferenceName = "RequireInternalReference";
public const string IssuerName = "Issuer";
public const string RequireClientCertificateName = "RequireClientCertificate";
public const string MustNotSendCancelName = "MustNotSendCancel";
public const string MustNotSendAmendName = "MustNotSendAmend";
public const string MustNotSendRenewName = "MustNotSendRenew";
public const string LayoutName = "Layout";
public const string BootstrapPolicyName = "BootstrapPolicy";
public const string HttpsTokenName = "HttpsToken";
public const string HttpBasicAuthenticationName = "HttpBasicAuthentication";
public const string HttpDigestAuthenticationName = "HttpDigestAuthentication";
bool _mustSupportRefKeyIdentifierName = false;
bool _mustSupportRefIssuerSerialName = false;
bool _mustSupportRefThumbprintName = false;
bool _protectionTokenHasAsymmetricKey = false;
public virtual XmlElement CreateWsspAssertion(string name)
{
return doc.CreateElement(WsspPrefix, name, this.WsspNamespaceUri);
}
public virtual bool IsWsspAssertion(XmlElement assertion)
{
return assertion.NamespaceURI == this.WsspNamespaceUri;
}
public virtual bool IsWsspAssertion(XmlElement assertion, string name)
{
return assertion.NamespaceURI == this.WsspNamespaceUri && assertion.LocalName == name;
}
public virtual bool IsMsspAssertion(XmlElement assertion, string name)
{
return assertion.NamespaceURI == MsspNamespace && assertion.LocalName == name;
}
public virtual bool TryImportWsspAssertion(ICollection<XmlElement> assertions, string name, out XmlElement assertion)
{
assertion = null;
foreach (XmlElement e in assertions)
{
if (e.LocalName == name && e.NamespaceURI == this.WsspNamespaceUri)
{
assertion = e;
assertions.Remove(e);
return true;
}
}
return false;
}
public virtual bool TryImportWsspAssertion(ICollection<XmlElement> assertions, string name)
{
return TryImportWsspAssertion(assertions, name, false);
}
public virtual bool TryImportWsspAssertion(ICollection<XmlElement> assertions, string name, bool isOptional)
{
foreach (XmlElement e in assertions)
{
if (e.LocalName == name && e.NamespaceURI == this.WsspNamespaceUri)
{
assertions.Remove(e);
return true;
}
}
return isOptional;
}
public virtual XmlElement CreateMsspAssertion(string name)
{
return doc.CreateElement(MsspPrefix, name, MsspNamespace);
}
public virtual bool CanImportAssertion(ICollection<XmlElement> assertions)
{
foreach (XmlElement e in assertions)
{
if (e.NamespaceURI == this.WsspNamespaceUri || e.NamespaceURI == WSSecurityPolicy.MsspNamespace)
{
return true;
}
}
return false;
}
public abstract bool IsSecurityVersionSupported(MessageSecurityVersion version);
public abstract MessageSecurityVersion GetSupportedMessageSecurityVersion(SecurityVersion version);
public abstract string WsspNamespaceUri { get; }
public abstract TrustDriver TrustDriver { get; }
public virtual string AlwaysToRecipientUri
{
get { return this.WsspNamespaceUri + @"/IncludeToken/AlwaysToRecipient"; }
}
public virtual string NeverUri
{
get { return this.WsspNamespaceUri + @"/IncludeToken/Never"; }
}
public virtual string OnceUri
{
get { return this.WsspNamespaceUri + @"/IncludeToken/Once"; }
}
public virtual string AlwaysToInitiatorUri
{
get { return this.WsspNamespaceUri + @"/IncludeToken/AlwaysToInitiator"; }
}
public virtual bool TryImportMsspAssertion(ICollection<XmlElement> assertions, string name)
{
foreach (XmlElement e in assertions)
{
if (e.LocalName == name && e.NamespaceURI == MsspNamespace)
{
assertions.Remove(e);
return true;
}
}
return false;
}
public virtual XmlElement CreateWspPolicyWrapper(MetadataExporter exporter, params XmlElement[] nestedAssertions)
{
XmlElement result = doc.CreateElement(WspPrefix, PolicyName, exporter.PolicyVersion.Namespace);
if (nestedAssertions != null)
{
foreach (XmlElement e in nestedAssertions)
{
if (e != null)
{
result.AppendChild(e);
}
}
}
return result;
}
public virtual XmlElement CreateWsspSignedPartsAssertion(MessagePartSpecification parts)
{
if (parts == null)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull("parts");
}
XmlElement result;
if (parts.IsEmpty())
{
result = null;
}
else
{
result = CreateWsspAssertion(SignedPartsName);
if (parts.IsBodyIncluded)
{
result.AppendChild(CreateWsspAssertion(BodyName));
}
foreach (XmlQualifiedName header in parts.HeaderTypes)
{
result.AppendChild(CreateWsspHeaderAssertion(header));
}
}
return result;
}
public virtual XmlElement CreateWsspEncryptedPartsAssertion(MessagePartSpecification parts)
{
if (parts == null)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull("parts");
}
XmlElement result;
if (parts.IsEmpty())
{
result = null;
}
else
{
result = CreateWsspAssertion(EncryptedPartsName);
if (parts.IsBodyIncluded)
{
result.AppendChild(CreateWsspAssertion(BodyName));
}
foreach (XmlQualifiedName header in parts.HeaderTypes)
{
result.AppendChild(CreateWsspHeaderAssertion(header));
}
}
return result;
}
public virtual MessagePartSpecification TryGetProtectedParts(XmlElement assertion)
{
MessagePartSpecification parts = new MessagePartSpecification();
foreach (XmlNode node in assertion.ChildNodes)
{
if (node.NodeType == XmlNodeType.Whitespace || node.NodeType == XmlNodeType.Comment)
{
continue;
}
else if (node is XmlElement)
{
XmlElement element = (XmlElement)node;
if (IsWsspAssertion(element, BodyName))
{
parts.IsBodyIncluded = true;
}
else if (IsWsspAssertion(element, HeaderName))
{
string name = element.GetAttribute(NameName);
string ns = element.GetAttribute(NamespaceName);
if (ns == null)
{
parts = null;
break;
}
parts.HeaderTypes.Add(new XmlQualifiedName(name, ns));
}
else
{
parts = null;
break;
}
}
else
{
parts = null;
break;
}
}
return parts;
}
public virtual bool TryImportWsspEncryptedPartsAssertion(ICollection<XmlElement> assertions, out MessagePartSpecification parts, out XmlElement assertion)
{
if (TryImportWsspAssertion(assertions, EncryptedPartsName, out assertion))
{
parts = TryGetProtectedParts(assertion);
}
else
{
parts = null;
}
return parts != null;
}
public virtual bool TryImportWsspSignedPartsAssertion(ICollection<XmlElement> assertions, out MessagePartSpecification parts, out XmlElement assertion)
{
if (TryImportWsspAssertion(assertions, SignedPartsName, out assertion))
{
parts = TryGetProtectedParts(assertion);
}
else
{
parts = null;
}
return parts != null;
}
public virtual XmlElement CreateWsspHeaderAssertion(XmlQualifiedName header)
{
XmlElement result = CreateWsspAssertion(HeaderName);
result.SetAttribute(NameName, header.Name);
result.SetAttribute(NamespaceName, header.Namespace);
return result;
}
public virtual XmlElement CreateWsspSymmetricBindingAssertion(MetadataExporter exporter, PolicyConversionContext policyContext, SymmetricSecurityBindingElement binding)
{
if (binding == null)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull("binding");
}
XmlElement result = CreateWsspAssertion(SymmetricBindingName);
result.AppendChild(
CreateWspPolicyWrapper(
exporter,
CreateWsspProtectionTokenAssertion(exporter, binding.ProtectionTokenParameters),
CreateWsspAlgorithmSuiteAssertion(exporter, binding.DefaultAlgorithmSuite),
CreateWsspLayoutAssertion(exporter, binding.SecurityHeaderLayout),
CreateWsspIncludeTimestampAssertion(binding.IncludeTimestamp),
CreateWsspEncryptBeforeSigningAssertion(binding.MessageProtectionOrder),
CreateWsspEncryptSignatureAssertion(policyContext, binding),
CreateWsspProtectTokensAssertion(binding),
CreateWsspAssertion(OnlySignEntireHeadersAndBodyName)
));
return result;
}
public virtual bool TryGetNestedPolicyAlternatives(MetadataImporter importer, XmlElement assertion, out Collection<Collection<XmlElement>> alternatives)
{
alternatives = null;
XmlElement policyElement = null;
foreach (XmlNode node in assertion.ChildNodes)
{
if (node is XmlElement && node.LocalName == PolicyName && (node.NamespaceURI == WspNamespace || node.NamespaceURI == Wsp15Namespace))
{
policyElement = (XmlElement)node;
break;
}
}
if (policyElement == null)
{
alternatives = null;
}
else
{
IEnumerable<IEnumerable<XmlElement>> enumerableAlternatives = importer.NormalizePolicy(new XmlElement[] { policyElement });
alternatives = new Collection<Collection<XmlElement>>();
foreach (IEnumerable<XmlElement> enumerableAlternative in enumerableAlternatives)
{
Collection<XmlElement> alternative = new Collection<XmlElement>();
alternatives.Add(alternative);
foreach (XmlElement e in enumerableAlternative)
{
alternative.Add(e);
}
}
}
return alternatives != null;
}
public virtual bool TryImportWsspSymmetricBindingAssertion(MetadataImporter importer, PolicyConversionContext policyContext, ICollection<XmlElement> assertions, out SymmetricSecurityBindingElement binding, out XmlElement assertion)
{
binding = null;
Collection<Collection<XmlElement>> alternatives;
if (TryImportWsspAssertion(assertions, SymmetricBindingName, out assertion)
&& TryGetNestedPolicyAlternatives(importer, assertion, out alternatives))
{
foreach (Collection<XmlElement> alternative in alternatives)
{
MessageProtectionOrder order;
bool protectTokens;
binding = new SymmetricSecurityBindingElement();
if (TryImportWsspProtectionTokenAssertion(importer, policyContext, alternative, binding)
&& TryImportWsspAlgorithmSuiteAssertion(importer, alternative, binding)
&& TryImportWsspLayoutAssertion(importer, alternative, binding)
&& TryImportWsspIncludeTimestampAssertion(alternative, binding)
&& TryImportMessageProtectionOrderAssertions(alternative, out order)
&& TryImportWsspProtectTokensAssertion(alternative, out protectTokens)
&& TryImportWsspAssertion(alternative, OnlySignEntireHeadersAndBodyName, true)
&& alternative.Count == 0)
{
binding.MessageProtectionOrder = order;
binding.ProtectTokens = protectTokens;
break;
}
else
{
binding = null;
}
}
}
return binding != null;
}
public virtual XmlElement CreateWsspAsymmetricBindingAssertion(MetadataExporter exporter, PolicyConversionContext policyContext, AsymmetricSecurityBindingElement binding)
{
if (binding == null)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull("binding");
}
XmlElement result = CreateWsspAssertion(AsymmetricBindingName);
result.AppendChild(
CreateWspPolicyWrapper(
exporter,
CreateWsspInitiatorTokenAssertion(exporter, binding.InitiatorTokenParameters),
CreateWsspRecipientTokenAssertion(exporter, binding.RecipientTokenParameters),
CreateWsspAlgorithmSuiteAssertion(exporter, binding.DefaultAlgorithmSuite),
CreateWsspLayoutAssertion(exporter, binding.SecurityHeaderLayout),
CreateWsspIncludeTimestampAssertion(binding.IncludeTimestamp),
CreateWsspEncryptBeforeSigningAssertion(binding.MessageProtectionOrder),
CreateWsspEncryptSignatureAssertion(policyContext, binding),
CreateWsspProtectTokensAssertion(binding),
CreateWsspAssertion(OnlySignEntireHeadersAndBodyName)
));
return result;
}
public virtual bool TryImportWsspAsymmetricBindingAssertion(MetadataImporter importer, PolicyConversionContext policyContext, ICollection<XmlElement> assertions, out AsymmetricSecurityBindingElement binding, out XmlElement assertion)
{
binding = null;
Collection<Collection<XmlElement>> alternatives;
if (TryImportWsspAssertion(assertions, AsymmetricBindingName, out assertion)
&& TryGetNestedPolicyAlternatives(importer, assertion, out alternatives))
{
foreach (Collection<XmlElement> alternative in alternatives)
{
MessageProtectionOrder order;
bool protectTokens;
binding = new AsymmetricSecurityBindingElement();
if (TryImportWsspInitiatorTokenAssertion(importer, policyContext, alternative, binding)
&& TryImportWsspRecipientTokenAssertion(importer, policyContext, alternative, binding)
&& TryImportWsspAlgorithmSuiteAssertion(importer, alternative, binding)
&& TryImportWsspLayoutAssertion(importer, alternative, binding)
&& TryImportWsspIncludeTimestampAssertion(alternative, binding)
&& TryImportMessageProtectionOrderAssertions(alternative, out order)
&& TryImportWsspProtectTokensAssertion(alternative, out protectTokens)
&& TryImportWsspAssertion(alternative, OnlySignEntireHeadersAndBodyName, true)
&& alternative.Count == 0)
{
binding.MessageProtectionOrder = order;
binding.ProtectTokens = protectTokens;
break;
}
else
{
binding = null;
}
}
}
return binding != null;
}
public virtual XmlElement CreateWsspTransportBindingAssertion(MetadataExporter exporter, TransportSecurityBindingElement binding, XmlElement transportTokenAssertion)
{
XmlElement result = CreateWsspAssertion(TransportBindingName);
result.AppendChild(
CreateWspPolicyWrapper(
exporter,
CreateWsspTransportTokenAssertion(exporter, transportTokenAssertion),
CreateWsspAlgorithmSuiteAssertion(exporter, binding.DefaultAlgorithmSuite),
CreateWsspLayoutAssertion(exporter, binding.SecurityHeaderLayout),
CreateWsspIncludeTimestampAssertion(binding.IncludeTimestamp)
));
return result;
}
public virtual bool TryImportWsspTransportBindingAssertion(MetadataImporter importer, ICollection<XmlElement> assertions, out TransportSecurityBindingElement binding, out XmlElement assertion)
{
binding = null;
Collection<Collection<XmlElement>> alternatives;
if (TryImportWsspAssertion(assertions, TransportBindingName, out assertion)
&& TryGetNestedPolicyAlternatives(importer, assertion, out alternatives))
{
foreach (Collection<XmlElement> alternative in alternatives)
{
XmlElement transportTokenAssertion;
binding = new TransportSecurityBindingElement();
if (TryImportWsspTransportTokenAssertion(importer, alternative, out transportTokenAssertion)
&& TryImportWsspAlgorithmSuiteAssertion(importer, alternative, binding)
&& TryImportWsspLayoutAssertion(importer, alternative, binding)
&& TryImportWsspIncludeTimestampAssertion(alternative, binding)
&& alternative.Count == 0)
{
if (false == importer.State.ContainsKey(SecurityBindingElementImporter.InSecureConversationBootstrapBindingImportMode))
{
// The transportTokenAssertion should be consumed by the transport binding importer
// for all primary bindings. However, for secure conversation bootstrap bindings
// the bootstrap policy does not contain any transport assertions, so adding the
// transport token assertion to the collection of unimported assertions would
// increase the likelihood of policy import failure due to unrecognized assertions.
assertions.Add(transportTokenAssertion);
}
break;
}
else
{
binding = null;
}
}
}
return binding != null;
}
public virtual XmlElement CreateWsspWssAssertion(MetadataExporter exporter, SecurityBindingElement binding)
{
if (binding == null)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull("binding");
}
if (binding.MessageSecurityVersion.SecurityVersion == SecurityVersion.WSSecurity10)
{
return CreateWsspWss10Assertion(exporter);
}
else if (binding.MessageSecurityVersion.SecurityVersion == SecurityVersion.WSSecurity11)
{
if (binding is SymmetricSecurityBindingElement)
{
return CreateWsspWss11Assertion(exporter, ((SymmetricSecurityBindingElement)binding).RequireSignatureConfirmation);
}
else if (binding is AsymmetricSecurityBindingElement)
{
return CreateWsspWss11Assertion(exporter, ((AsymmetricSecurityBindingElement)binding).RequireSignatureConfirmation);
}
else
{
return CreateWsspWss11Assertion(exporter, false);
}
}
else
{
return null;
}
}
public virtual bool TryImportWsspWssAssertion(MetadataImporter importer, ICollection<XmlElement> assertions, SecurityBindingElement binding, out XmlElement assertion)
{
if (binding == null)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull("binding");
}
if (assertions == null)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull("assertions");
}
bool result = true;
Collection<Collection<XmlElement>> alternatives;
if (TryImportWsspAssertion(assertions, Wss10Name, out assertion))
{
if (TryGetNestedPolicyAlternatives(importer, assertion, out alternatives))
{
foreach (Collection<XmlElement> alternative in alternatives)
{
TryImportWsspAssertion(alternative, MustSupportRefKeyIdentifierName);
TryImportWsspAssertion(alternative, MustSupportRefIssuerSerialName);
if (alternative.Count == 0)
{
binding.MessageSecurityVersion = this.GetSupportedMessageSecurityVersion(SecurityVersion.WSSecurity10);
result = true;
break;
}
else
{
result = false;
}
}
}
}
else if (TryImportWsspAssertion(assertions, Wss11Name, out assertion))
{
if (TryGetNestedPolicyAlternatives(importer, assertion, out alternatives))
{
foreach (Collection<XmlElement> alternative in alternatives)
{
TryImportWsspAssertion(alternative, MustSupportRefKeyIdentifierName);
TryImportWsspAssertion(alternative, MustSupportRefIssuerSerialName);
TryImportWsspAssertion(alternative, MustSupportRefThumbprintName);
TryImportWsspAssertion(alternative, MustSupportRefEncryptedKeyName);
bool requireSignatureConfirmation = TryImportWsspAssertion(alternative, RequireSignatureConfirmationName);
if (alternative.Count == 0)
{
binding.MessageSecurityVersion = this.GetSupportedMessageSecurityVersion(SecurityVersion.WSSecurity11);
if (binding is SymmetricSecurityBindingElement)
{
((SymmetricSecurityBindingElement)binding).RequireSignatureConfirmation = requireSignatureConfirmation;
}
else if (binding is AsymmetricSecurityBindingElement)
{
((AsymmetricSecurityBindingElement)binding).RequireSignatureConfirmation = requireSignatureConfirmation;
}
result = true;
break;
}
else
{
result = false;
}
}
}
}
return result;
}
public virtual XmlElement CreateWsspWss10Assertion(MetadataExporter exporter)
{
XmlElement result = CreateWsspAssertion(Wss10Name);
result.AppendChild(
CreateWspPolicyWrapper(
exporter,
CreateWsspAssertionMustSupportRefKeyIdentifierName(),
CreateWsspAssertionMustSupportRefIssuerSerialName()
));
return result;
}
public virtual XmlElement CreateWsspWss11Assertion(MetadataExporter exporter, bool requireSignatureConfirmation)
{
XmlElement result = CreateWsspAssertion(Wss11Name);
result.AppendChild(
CreateWspPolicyWrapper(
exporter,
CreateWsspAssertionMustSupportRefKeyIdentifierName(),
CreateWsspAssertionMustSupportRefIssuerSerialName(),
CreateWsspAssertionMustSupportRefThumbprintName(),
CreateWsspAssertionMustSupportRefEncryptedKeyName(),
CreateWsspRequireSignatureConformationAssertion(requireSignatureConfirmation)
));
return result;
}
public virtual XmlElement CreateWsspAssertionMustSupportRefKeyIdentifierName()
{
if (_mustSupportRefKeyIdentifierName)
{
return CreateWsspAssertion(MustSupportRefKeyIdentifierName);
}
else
{
return null;
}
}
public virtual XmlElement CreateWsspAssertionMustSupportRefIssuerSerialName()
{
if (_mustSupportRefIssuerSerialName)
{
return CreateWsspAssertion(MustSupportRefIssuerSerialName);
}
else
{
return null;
}
}
public virtual XmlElement CreateWsspAssertionMustSupportRefThumbprintName()
{
if (_mustSupportRefThumbprintName)
{
return CreateWsspAssertion(MustSupportRefThumbprintName);
}
else
{
return null;
}
}
public virtual XmlElement CreateWsspAssertionMustSupportRefEncryptedKeyName()
{
// protectionTokenHasAsymmetricKey is only set to true for a SymmetricBindingElement having an asymmetric key
if (_protectionTokenHasAsymmetricKey)
{
return CreateWsspAssertion(MustSupportRefEncryptedKeyName);
}
else
{
return null;
}
}
public virtual XmlElement CreateWsspRequireSignatureConformationAssertion(bool requireSignatureConfirmation)
{
if (requireSignatureConfirmation)
{
return CreateWsspAssertion(RequireSignatureConfirmationName);
}
else
{
return null;
}
}
public abstract XmlElement CreateWsspTrustAssertion(MetadataExporter exporter, SecurityKeyEntropyMode keyEntropyMode);
public abstract bool TryImportWsspTrustAssertion(MetadataImporter importer, ICollection<XmlElement> assertions, SecurityBindingElement binding, out XmlElement assertion);
protected XmlElement CreateWsspTrustAssertion(string trustName, MetadataExporter exporter, SecurityKeyEntropyMode keyEntropyMode)
{
XmlElement result = CreateWsspAssertion(trustName);
result.AppendChild(
CreateWspPolicyWrapper(
exporter,
CreateWsspAssertion(MustSupportIssuedTokensName),
CreateWsspRequireClientEntropyAssertion(keyEntropyMode),
CreateWsspRequireServerEntropyAssertion(keyEntropyMode)
));
return result;
}
protected bool TryImportWsspTrustAssertion(string trustName, MetadataImporter importer, ICollection<XmlElement> assertions, SecurityBindingElement binding, out XmlElement assertion)
{
if (binding == null)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull("binding");
}
if (assertions == null)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull("assertions");
}
bool result = true;
Collection<Collection<XmlElement>> alternatives;
if (TryImportWsspAssertion(assertions, trustName, out assertion)
&& TryGetNestedPolicyAlternatives(importer, assertion, out alternatives))
{
foreach (Collection<XmlElement> alternative in alternatives)
{
TryImportWsspAssertion(alternative, MustSupportIssuedTokensName);
bool requireClientEntropy = TryImportWsspAssertion(alternative, RequireClientEntropyName);
bool requireServerEntropy = TryImportWsspAssertion(alternative, RequireServerEntropyName);
if (trustName == Trust13Name)
{
// We are just reading this optional element.
TryImportWsspAssertion(alternative, RequireAppliesTo);
}
if (alternative.Count == 0)
{
if (requireClientEntropy)
{
if (requireServerEntropy)
{
binding.KeyEntropyMode = SecurityKeyEntropyMode.CombinedEntropy;
}
else
{
binding.KeyEntropyMode = SecurityKeyEntropyMode.ClientEntropy;
}
}
else if (requireServerEntropy)
{
binding.KeyEntropyMode = SecurityKeyEntropyMode.ServerEntropy;
}
result = true;
break;
}
else
{
result = false;
}
}
}
return result;
}
public virtual XmlElement CreateWsspRequireClientEntropyAssertion(SecurityKeyEntropyMode keyEntropyMode)
{
if (keyEntropyMode == SecurityKeyEntropyMode.ClientEntropy || keyEntropyMode == SecurityKeyEntropyMode.CombinedEntropy)
{
return CreateWsspAssertion(RequireClientEntropyName);
}
else
{
return null;
}
}
public virtual XmlElement CreateWsspRequireServerEntropyAssertion(SecurityKeyEntropyMode keyEntropyMode)
{
if (keyEntropyMode == SecurityKeyEntropyMode.ServerEntropy || keyEntropyMode == SecurityKeyEntropyMode.CombinedEntropy)
{
return CreateWsspAssertion(RequireServerEntropyName);
}
else
{
return null;
}
}
public virtual Collection<XmlElement> CreateWsspSupportingTokensAssertion(MetadataExporter exporter, Collection<SecurityTokenParameters> signed, Collection<SecurityTokenParameters> signedEncrypted, Collection<SecurityTokenParameters> endorsing, Collection<SecurityTokenParameters> signedEndorsing, Collection<SecurityTokenParameters> optionalSigned, Collection<SecurityTokenParameters> optionalSignedEncrypted, Collection<SecurityTokenParameters> optionalEndorsing, Collection<SecurityTokenParameters> optionalSignedEndorsing)
{
return CreateWsspSupportingTokensAssertion(exporter, signed, signedEncrypted, endorsing, signedEndorsing, optionalSigned, optionalSignedEncrypted, optionalEndorsing, optionalSignedEndorsing, null);
}
public virtual Collection<XmlElement> CreateWsspSupportingTokensAssertion(MetadataExporter exporter, Collection<SecurityTokenParameters> signed, Collection<SecurityTokenParameters> signedEncrypted, Collection<SecurityTokenParameters> endorsing, Collection<SecurityTokenParameters> signedEndorsing, Collection<SecurityTokenParameters> optionalSigned, Collection<SecurityTokenParameters> optionalSignedEncrypted, Collection<SecurityTokenParameters> optionalEndorsing, Collection<SecurityTokenParameters> optionalSignedEndorsing, AddressingVersion addressingVersion)
{
Collection<XmlElement> supportingTokenAssertions = new Collection<XmlElement>();
// Signed Supporting Tokens
XmlElement supportingTokenAssertion = CreateWsspSignedSupportingTokensAssertion(exporter, signed, signedEncrypted, optionalSigned, optionalSignedEncrypted);
if (supportingTokenAssertion != null)
supportingTokenAssertions.Add(supportingTokenAssertion);
// Endorsing Supporting Tokens.
supportingTokenAssertion = CreateWsspEndorsingSupportingTokensAssertion(exporter, endorsing, optionalEndorsing, addressingVersion);
if (supportingTokenAssertion != null)
supportingTokenAssertions.Add(supportingTokenAssertion);
// Signed Endorsing Supporting Tokens.
supportingTokenAssertion = CreateWsspSignedEndorsingSupportingTokensAssertion(exporter, signedEndorsing, optionalSignedEndorsing, addressingVersion);
if (supportingTokenAssertion != null)
supportingTokenAssertions.Add(supportingTokenAssertion);
return supportingTokenAssertions;
}
protected XmlElement CreateWsspSignedSupportingTokensAssertion(MetadataExporter exporter, Collection<SecurityTokenParameters> signed, Collection<SecurityTokenParameters> signedEncrypted, Collection<SecurityTokenParameters> optionalSigned, Collection<SecurityTokenParameters> optionalSignedEncrypted)
{
XmlElement result;
if ((signed == null || signed.Count == 0)
&& (signedEncrypted == null || signedEncrypted.Count == 0)
&& (optionalSigned == null || optionalSigned.Count == 0)
&& (optionalSignedEncrypted == null || optionalSignedEncrypted.Count == 0))
{
result = null;
}
else
{
XmlElement policy = CreateWspPolicyWrapper(exporter);
if (signed != null)
{
foreach (SecurityTokenParameters p in signed)
{
policy.AppendChild(CreateTokenAssertion(exporter, p));
}
}
if (signedEncrypted != null)
{
foreach (SecurityTokenParameters p in signedEncrypted)
{
policy.AppendChild(CreateTokenAssertion(exporter, p));
}
}
if (optionalSigned != null)
{
foreach (SecurityTokenParameters p in optionalSigned)
{
policy.AppendChild(CreateTokenAssertion(exporter, p, true));
}
}
if (optionalSignedEncrypted != null)
{
foreach (SecurityTokenParameters p in optionalSignedEncrypted)
{
policy.AppendChild(CreateTokenAssertion(exporter, p, true));
}
}
result = CreateWsspAssertion(SignedSupportingTokensName);
result.AppendChild(policy);
}
return result;
}
protected XmlElement CreateWsspEndorsingSupportingTokensAssertion(MetadataExporter exporter, Collection<SecurityTokenParameters> endorsing, Collection<SecurityTokenParameters> optionalEndorsing, AddressingVersion addressingVersion)
{
return CreateWsspiSupportingTokensAssertion(exporter, endorsing, optionalEndorsing, addressingVersion, EndorsingSupportingTokensName);
}
protected XmlElement CreateWsspSignedEndorsingSupportingTokensAssertion(MetadataExporter exporter, Collection<SecurityTokenParameters> signedEndorsing, Collection<SecurityTokenParameters> optionalSignedEndorsing, AddressingVersion addressingVersion)
{
return CreateWsspiSupportingTokensAssertion(exporter, signedEndorsing, optionalSignedEndorsing, addressingVersion, SignedEndorsingSupportingTokensName);
}
protected XmlElement CreateWsspiSupportingTokensAssertion(MetadataExporter exporter, Collection<SecurityTokenParameters> endorsing, Collection<SecurityTokenParameters> optionalEndorsing, AddressingVersion addressingVersion, string assertionName)
{
XmlElement result;
bool hasAssymetricKey = false;
if ((endorsing == null || endorsing.Count == 0)
&& (optionalEndorsing == null || optionalEndorsing.Count == 0))
{
result = null;
}
else
{
XmlElement policy = CreateWspPolicyWrapper(exporter);
if (endorsing != null)
{
foreach (SecurityTokenParameters p in endorsing)
{
if (p.HasAsymmetricKey)
hasAssymetricKey = true;
policy.AppendChild(CreateTokenAssertion(exporter, p));
}
}
if (optionalEndorsing != null)
{
foreach (SecurityTokenParameters p in optionalEndorsing)
{
if (p.HasAsymmetricKey)
hasAssymetricKey = true;
policy.AppendChild(CreateTokenAssertion(exporter, p, true));
}
}
if (addressingVersion != null && AddressingVersion.None != addressingVersion)
{
// only add assertion to sign the 'To' only if an assymetric key is found
if (hasAssymetricKey)
{
policy.AppendChild(
CreateWsspSignedPartsAssertion(
new MessagePartSpecification(new XmlQualifiedName(AddressingStrings.To, addressingVersion.Namespace))));
}
}
result = CreateWsspAssertion(assertionName);
result.AppendChild(policy);
}
return result;
}
public virtual bool TryImportWsspSupportingTokensAssertion(MetadataImporter importer, PolicyConversionContext policyContext, ICollection<XmlElement> assertions, Collection<SecurityTokenParameters> signed, Collection<SecurityTokenParameters> signedEncrypted, Collection<SecurityTokenParameters> endorsing, Collection<SecurityTokenParameters> signedEndorsing, Collection<SecurityTokenParameters> optionalSigned, Collection<SecurityTokenParameters> optionalSignedEncrypted, Collection<SecurityTokenParameters> optionalEndorsing, Collection<SecurityTokenParameters> optionalSignedEndorsing)
{
XmlElement assertion;
if (!TryImportWsspSignedSupportingTokensAssertion(
importer,
policyContext,
assertions,
signed,
signedEncrypted,
optionalSigned,
optionalSignedEncrypted,
out assertion)
&& assertion != null)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new InvalidOperationException(SR.GetString(SR.UnsupportedSecurityPolicyAssertion, assertion.OuterXml)));
}
if (!TryImportWsspEndorsingSupportingTokensAssertion(
importer,
policyContext,
assertions,
endorsing,
optionalEndorsing,
out assertion)
&& assertion != null)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new InvalidOperationException(SR.GetString(SR.UnsupportedSecurityPolicyAssertion, assertion.OuterXml)));
}
if (!TryImportWsspSignedEndorsingSupportingTokensAssertion(
importer,
policyContext,
assertions,
signedEndorsing,
optionalSignedEndorsing,
out assertion)
&& assertion != null)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new InvalidOperationException(SR.GetString(SR.UnsupportedSecurityPolicyAssertion, assertion.OuterXml)));
}
return true;
}
protected bool TryImportWsspSignedSupportingTokensAssertion(MetadataImporter importer, PolicyConversionContext policyContext, ICollection<XmlElement> assertions, Collection<SecurityTokenParameters> signed, Collection<SecurityTokenParameters> signedEncrypted, Collection<SecurityTokenParameters> optionalSigned, Collection<SecurityTokenParameters> optionalSignedEncrypted, out XmlElement assertion)
{
if (signed == null)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull("signed");
}
if (signedEncrypted == null)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull("signedEncrypted");
}
if (optionalSigned == null)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull("optionalSigned");
}
if (optionalSignedEncrypted == null)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull("optionalSignedEncrypted");
}
bool result = true;
Collection<Collection<XmlElement>> alternatives;
if (TryImportWsspAssertion(assertions, SignedSupportingTokensName, out assertion)
&& TryGetNestedPolicyAlternatives(importer, assertion, out alternatives))
{
foreach (Collection<XmlElement> alternative in alternatives)
{
Collection<SecurityTokenParameters> signedSupportingTokens = new Collection<SecurityTokenParameters>();
Collection<SecurityTokenParameters> optionalSignedSupportingTokens = new Collection<SecurityTokenParameters>();
SecurityTokenParameters parameters;
bool isOptional;
while (alternative.Count > 0 && TryImportTokenAssertion(importer, policyContext, alternative, out parameters, out isOptional))
{
if (isOptional)
{
optionalSignedSupportingTokens.Add(parameters);
}
else
{
signedSupportingTokens.Add(parameters);
}
}
if (alternative.Count == 0)
{
foreach (SecurityTokenParameters p in signedSupportingTokens)
{
if (p is UserNameSecurityTokenParameters)
{
signedEncrypted.Add(p);
}
else
{
signed.Add(p);
}
}
foreach (SecurityTokenParameters p in optionalSignedSupportingTokens)
{
if (p is UserNameSecurityTokenParameters)
{
optionalSignedEncrypted.Add(p);
}
else
{
optionalSigned.Add(p);
}
}
result = true;
break;
}
else
{
result = false;
}
}
}
return result;
}
protected bool TryImportWsspEndorsingSupportingTokensAssertion(MetadataImporter importer, PolicyConversionContext policyContext, ICollection<XmlElement> assertions, Collection<SecurityTokenParameters> endorsing, Collection<SecurityTokenParameters> optionalEndorsing, out XmlElement assertion)
{
if (endorsing == null)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull("endorsing");
}
if (optionalEndorsing == null)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull("optionalEndorsing");
}
bool result = true;
Collection<Collection<XmlElement>> alternatives;
if (TryImportWsspAssertion(assertions, EndorsingSupportingTokensName, out assertion)
&& TryGetNestedPolicyAlternatives(importer, assertion, out alternatives))
{
foreach (Collection<XmlElement> alternative in alternatives)
{
MessagePartSpecification signedParts;
if (!TryImportWsspSignedPartsAssertion(alternative, out signedParts, out assertion) && assertion != null)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new InvalidOperationException(SR.GetString(SR.UnsupportedSecurityPolicyAssertion, assertion.OuterXml)));
}
Collection<SecurityTokenParameters> supportingTokens = new Collection<SecurityTokenParameters>();
Collection<SecurityTokenParameters> optionalSupportingTokens = new Collection<SecurityTokenParameters>();
SecurityTokenParameters parameters;
bool isOptional;
while (alternative.Count > 0 && TryImportTokenAssertion(importer, policyContext, alternative, out parameters, out isOptional))
{
if (isOptional)
{
optionalSupportingTokens.Add(parameters);
}
else
{
supportingTokens.Add(parameters);
}
}
if (alternative.Count == 0)
{
foreach (SecurityTokenParameters p in supportingTokens)
{
endorsing.Add(p);
}
foreach (SecurityTokenParameters p in optionalSupportingTokens)
{
optionalEndorsing.Add(p);
}
result = true;
break;
}
else
{
result = false;
}
}
}
return result;
}
protected bool TryImportWsspSignedEndorsingSupportingTokensAssertion(MetadataImporter importer, PolicyConversionContext policyContext, ICollection<XmlElement> assertions, Collection<SecurityTokenParameters> signedEndorsing, Collection<SecurityTokenParameters> optionalSignedEndorsing, out XmlElement assertion)
{
if (signedEndorsing == null)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull("signedEndorsing");
}
if (optionalSignedEndorsing == null)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull("optionalSignedEndorsing");
}
bool result = true;
Collection<Collection<XmlElement>> alternatives;
if (TryImportWsspAssertion(assertions, SignedEndorsingSupportingTokensName, out assertion)
&& TryGetNestedPolicyAlternatives(importer, assertion, out alternatives))
{
foreach (Collection<XmlElement> alternative in alternatives)
{
MessagePartSpecification signedParts;
if (!TryImportWsspSignedPartsAssertion(alternative, out signedParts, out assertion) && assertion != null)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new InvalidOperationException(SR.GetString(SR.UnsupportedSecurityPolicyAssertion, assertion.OuterXml)));
}
Collection<SecurityTokenParameters> supportingTokens = new Collection<SecurityTokenParameters>();
Collection<SecurityTokenParameters> optionalSupportingTokens = new Collection<SecurityTokenParameters>();
SecurityTokenParameters parameters;
bool isOptional;
while (alternative.Count > 0 && TryImportTokenAssertion(importer, policyContext, alternative, out parameters, out isOptional))
{
if (isOptional)
{
optionalSupportingTokens.Add(parameters);
}
else
{
supportingTokens.Add(parameters);
}
}
if (alternative.Count == 0)
{
foreach (SecurityTokenParameters p in supportingTokens)
{
signedEndorsing.Add(p);
}
foreach (SecurityTokenParameters p in optionalSupportingTokens)
{
optionalSignedEndorsing.Add(p);
}
result = true;
break;
}
else
{
result = false;
}
}
}
return result;
}
public virtual XmlElement CreateWsspEncryptSignatureAssertion(PolicyConversionContext policyContext, SecurityBindingElement binding)
{
MessageProtectionOrder protectionOrder;
if (binding is SymmetricSecurityBindingElement)
{
protectionOrder = ((SymmetricSecurityBindingElement)binding).MessageProtectionOrder;
}
else
{
protectionOrder = ((AsymmetricSecurityBindingElement)binding).MessageProtectionOrder;
}
if (protectionOrder == MessageProtectionOrder.SignBeforeEncryptAndEncryptSignature
&& ContainsEncryptionParts(policyContext, binding))
{
return CreateWsspAssertion(EncryptSignatureName);
}
else
{
return null;
}
}
// This api checks whether or not the message will or may contain Encrypted parts
// to decide whether or not to emit sp:EncryptSignature on Binding assertion.
// 1) (Optional)EndpointSupporting.
// 2) (Optional)OperationSupporting.
// 3) In/Out/Fault Message ProtectionLevel for each Operation.
bool ContainsEncryptionParts(PolicyConversionContext policyContext, SecurityBindingElement security)
{
// special case for RST/RSTR since we hard coded the security for them
if (policyContext.Contract == NullContract)
return true;
if (security.EndpointSupportingTokenParameters.SignedEncrypted.Count > 0 ||
security.OptionalEndpointSupportingTokenParameters.SignedEncrypted.Count > 0)
{
return true;
}
foreach (SupportingTokenParameters r in security.OperationSupportingTokenParameters.Values)
{
if (r.SignedEncrypted.Count > 0)
{
return true;
}
}
foreach (SupportingTokenParameters r in security.OptionalOperationSupportingTokenParameters.Values)
{
if (r.SignedEncrypted.Count > 0)
{
return true;
}
}
BindingParameterCollection bindingParameters = new BindingParameterCollection();
bindingParameters.Add(ChannelProtectionRequirements.CreateFromContract(policyContext.Contract, policyContext.BindingElements.Find<SecurityBindingElement>().GetIndividualProperty<ISecurityCapabilities>(), false));
ChannelProtectionRequirements protectionRequirements = SecurityBindingElement.ComputeProtectionRequirements(security, bindingParameters, policyContext.BindingElements, true);
protectionRequirements.MakeReadOnly();
WSSecurityPolicy sp = WSSecurityPolicy.GetSecurityPolicyDriver(security.MessageSecurityVersion);
foreach (OperationDescription operation in policyContext.Contract.Operations)
{
// export policy for application messages
foreach (MessageDescription message in operation.Messages)
{
MessagePartSpecification parts;
ScopedMessagePartSpecification scopedParts;
// confidentiality
if (message.Direction == MessageDirection.Input)
{
scopedParts = protectionRequirements.IncomingEncryptionParts;
}
else
{
scopedParts = protectionRequirements.OutgoingEncryptionParts;
}
if (scopedParts.TryGetParts(message.Action, out parts))
{
if (!parts.IsEmpty())
{
return true;
}
}
}
// export policy for faults
foreach (FaultDescription fault in operation.Faults)
{
MessagePartSpecification parts;
// confidentiality
if (protectionRequirements.OutgoingEncryptionParts.TryGetParts(fault.Action, out parts))
{
if (!parts.IsEmpty())
{
return true;
}
}
}
}
return false;
}
public virtual XmlElement CreateWsspEncryptBeforeSigningAssertion(MessageProtectionOrder protectionOrder)
{
if (protectionOrder == MessageProtectionOrder.EncryptBeforeSign)
{
return CreateWsspAssertion(EncryptBeforeSigningName);
}
else
{
return null;
}
}
public virtual XmlElement CreateWsspProtectTokensAssertion(SecurityBindingElement sbe)
{
if (sbe.ProtectTokens)
{
return CreateWsspAssertion(ProtectTokens);
}
else
{
return null;
}
}
public virtual bool TryImportMessageProtectionOrderAssertions(ICollection<XmlElement> assertions, out MessageProtectionOrder order)
{
if (TryImportWsspAssertion(assertions, EncryptBeforeSigningName))
{
order = MessageProtectionOrder.EncryptBeforeSign;
}
else if (TryImportWsspAssertion(assertions, EncryptSignatureName))
{
order = MessageProtectionOrder.SignBeforeEncryptAndEncryptSignature;
}
else
{
order = MessageProtectionOrder.SignBeforeEncrypt;
}
return true;
}
public virtual XmlElement CreateWsspIncludeTimestampAssertion(bool includeTimestamp)
{
if (includeTimestamp)
{
return CreateWsspAssertion(IncludeTimestampName);
}
else
{
return null;
}
}
public virtual bool TryImportWsspIncludeTimestampAssertion(ICollection<XmlElement> assertions, SecurityBindingElement binding)
{
binding.IncludeTimestamp = TryImportWsspAssertion(assertions, IncludeTimestampName);
return true;
}
public virtual bool TryImportWsspProtectTokensAssertion(ICollection<XmlElement> assertions, out bool protectTokens)
{
if (TryImportWsspAssertion(assertions, ProtectTokens))
{
protectTokens = true;
}
else
{
protectTokens = false;
}
return true;
}
public virtual XmlElement CreateWsspLayoutAssertion(MetadataExporter exporter, SecurityHeaderLayout layout)
{
XmlElement result = CreateWsspAssertion(LayoutName);
result.AppendChild(
CreateWspPolicyWrapper(
exporter,
CreateLayoutAssertion(layout)
));
return result;
}
public virtual bool TryImportWsspLayoutAssertion(MetadataImporter importer, ICollection<XmlElement> assertions, SecurityBindingElement binding)
{
bool result = false;
XmlElement assertion;
if (TryImportWsspAssertion(assertions, LayoutName, out assertion))
{
SecurityHeaderLayout layout;
Collection<Collection<XmlElement>> alternatives;
if (TryGetNestedPolicyAlternatives(importer, assertion, out alternatives))
{
foreach (Collection<XmlElement> alternative in alternatives)
{
if (TryImportLayoutAssertion(alternative, out layout)
&& alternative.Count == 0)
{
binding.SecurityHeaderLayout = layout;
result = true;
break;
}
}
}
}
else
{
binding.SecurityHeaderLayout = SecurityHeaderLayout.Lax;
result = true;
}
return result;
}
public virtual XmlElement CreateLayoutAssertion(SecurityHeaderLayout layout)
{
switch (layout)
{
default:
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new ArgumentOutOfRangeException("layout"));
case SecurityHeaderLayout.Lax:
return CreateWsspAssertion(LaxName);
case SecurityHeaderLayout.LaxTimestampFirst:
return CreateWsspAssertion(LaxTsFirstName);
case SecurityHeaderLayout.LaxTimestampLast:
return CreateWsspAssertion(LaxTsLastName);
case SecurityHeaderLayout.Strict:
return CreateWsspAssertion(StrictName);
}
}
public virtual bool TryImportLayoutAssertion(ICollection<XmlElement> assertions, out SecurityHeaderLayout layout)
{
bool result = true;
layout = SecurityHeaderLayout.Lax;
if (TryImportWsspAssertion(assertions, LaxName))
{
layout = SecurityHeaderLayout.Lax;
}
else if (TryImportWsspAssertion(assertions, LaxTsFirstName))
{
layout = SecurityHeaderLayout.LaxTimestampFirst;
}
else if (TryImportWsspAssertion(assertions, LaxTsLastName))
{
layout = SecurityHeaderLayout.LaxTimestampLast;
}
else if (TryImportWsspAssertion(assertions, StrictName))
{
layout = SecurityHeaderLayout.Strict;
}
else
{
result = false;
}
return result;
}
public virtual XmlElement CreateWsspAlgorithmSuiteAssertion(MetadataExporter exporter, SecurityAlgorithmSuite suite)
{
XmlElement result = CreateWsspAssertion(AlgorithmSuiteName);
result.AppendChild(
CreateWspPolicyWrapper(
exporter,
CreateAlgorithmSuiteAssertion(suite)
));
return result;
}
public virtual bool TryImportWsspAlgorithmSuiteAssertion(MetadataImporter importer, ICollection<XmlElement> assertions, SecurityBindingElement binding)
{
SecurityAlgorithmSuite suite = null;
XmlElement assertion;
Collection<Collection<XmlElement>> alternatives;
if (TryImportWsspAssertion(assertions, AlgorithmSuiteName, out assertion)
&& TryGetNestedPolicyAlternatives(importer, assertion, out alternatives))
{
foreach (Collection<XmlElement> alternative in alternatives)
{
if (TryImportAlgorithmSuiteAssertion(alternative, out suite)
&& alternative.Count == 0)
{
binding.DefaultAlgorithmSuite = suite;
break;
}
else
{
suite = null;
}
}
}
return suite != null;
}
public virtual XmlElement CreateAlgorithmSuiteAssertion(SecurityAlgorithmSuite suite)
{
if (suite == null)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull("suite");
}
XmlElement result;
if (suite == SecurityAlgorithmSuite.Basic256)
result = CreateWsspAssertion(Basic256Name);
else if (suite == SecurityAlgorithmSuite.Basic192)
result = CreateWsspAssertion(Basic192Name);
else if (suite == SecurityAlgorithmSuite.Basic128)
result = CreateWsspAssertion(Basic128Name);
else if (suite == SecurityAlgorithmSuite.TripleDes)
result = CreateWsspAssertion(TripleDesName);
else if (suite == SecurityAlgorithmSuite.Basic256Rsa15)
result = CreateWsspAssertion(Basic256Rsa15Name);
else if (suite == SecurityAlgorithmSuite.Basic192Rsa15)
result = CreateWsspAssertion(Basic192Rsa15Name);
else if (suite == SecurityAlgorithmSuite.Basic128Rsa15)
result = CreateWsspAssertion(Basic128Rsa15Name);
else if (suite == SecurityAlgorithmSuite.TripleDesRsa15)
result = CreateWsspAssertion(TripleDesRsa15Name);
else if (suite == SecurityAlgorithmSuite.Basic256Sha256)
result = CreateWsspAssertion(Basic256Sha256Name);
else if (suite == SecurityAlgorithmSuite.Basic192Sha256)
result = CreateWsspAssertion(Basic192Sha256Name);
else if (suite == SecurityAlgorithmSuite.Basic128Sha256)
result = CreateWsspAssertion(Basic128Sha256Name);
else if (suite == SecurityAlgorithmSuite.TripleDesSha256)
result = CreateWsspAssertion(TripleDesSha256Name);
else if (suite == SecurityAlgorithmSuite.Basic256Sha256Rsa15)
result = CreateWsspAssertion(Basic256Sha256Rsa15Name);
else if (suite == SecurityAlgorithmSuite.Basic192Sha256Rsa15)
result = CreateWsspAssertion(Basic192Sha256Rsa15Name);
else if (suite == SecurityAlgorithmSuite.Basic128Sha256Rsa15)
result = CreateWsspAssertion(Basic128Sha256Rsa15Name);
else if (suite == SecurityAlgorithmSuite.TripleDesSha256Rsa15)
result = CreateWsspAssertion(TripleDesSha256Rsa15Name);
else
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new ArgumentOutOfRangeException("suite"));
}
return result;
}
public virtual bool TryImportAlgorithmSuiteAssertion(ICollection<XmlElement> assertions, out SecurityAlgorithmSuite suite)
{
if (TryImportWsspAssertion(assertions, Basic256Name))
suite = SecurityAlgorithmSuite.Basic256;
else if (TryImportWsspAssertion(assertions, Basic192Name))
suite = SecurityAlgorithmSuite.Basic192;
else if (TryImportWsspAssertion(assertions, Basic128Name))
suite = SecurityAlgorithmSuite.Basic128;
else if (TryImportWsspAssertion(assertions, TripleDesName))
suite = SecurityAlgorithmSuite.TripleDes;
else if (TryImportWsspAssertion(assertions, Basic256Rsa15Name))
suite = SecurityAlgorithmSuite.Basic256Rsa15;
else if (TryImportWsspAssertion(assertions, Basic192Rsa15Name))
suite = SecurityAlgorithmSuite.Basic192Rsa15;
else if (TryImportWsspAssertion(assertions, Basic128Rsa15Name))
suite = SecurityAlgorithmSuite.Basic128Rsa15;
else if (TryImportWsspAssertion(assertions, TripleDesRsa15Name))
suite = SecurityAlgorithmSuite.TripleDesRsa15;
else if (TryImportWsspAssertion(assertions, Basic256Sha256Name))
suite = SecurityAlgorithmSuite.Basic256Sha256;
else if (TryImportWsspAssertion(assertions, Basic192Sha256Name))
suite = SecurityAlgorithmSuite.Basic192Sha256;
else if (TryImportWsspAssertion(assertions, Basic128Sha256Name))
suite = SecurityAlgorithmSuite.Basic128Sha256;
else if (TryImportWsspAssertion(assertions, TripleDesSha256Name))
suite = SecurityAlgorithmSuite.TripleDesSha256;
else if (TryImportWsspAssertion(assertions, Basic256Sha256Rsa15Name))
suite = SecurityAlgorithmSuite.Basic256Sha256Rsa15;
else if (TryImportWsspAssertion(assertions, Basic192Sha256Rsa15Name))
suite = SecurityAlgorithmSuite.Basic192Sha256Rsa15;
else if (TryImportWsspAssertion(assertions, Basic128Sha256Rsa15Name))
suite = SecurityAlgorithmSuite.Basic128Sha256Rsa15;
else if (TryImportWsspAssertion(assertions, TripleDesSha256Rsa15Name))
suite = SecurityAlgorithmSuite.TripleDesSha256Rsa15;
else
suite = null;
return suite != null;
}
public virtual XmlElement CreateWsspProtectionTokenAssertion(MetadataExporter exporter, SecurityTokenParameters parameters)
{
XmlElement result = CreateWsspAssertion(ProtectionTokenName);
result.AppendChild(
CreateWspPolicyWrapper(
exporter,
CreateTokenAssertion(exporter, parameters)
));
_protectionTokenHasAsymmetricKey = parameters.HasAsymmetricKey;
return result;
}
public virtual bool TryImportWsspProtectionTokenAssertion(MetadataImporter importer, PolicyConversionContext policyContext, ICollection<XmlElement> assertions, SymmetricSecurityBindingElement binding)
{
bool result = false;
XmlElement assertion;
Collection<Collection<XmlElement>> alternatives;
if (TryImportWsspAssertion(assertions, ProtectionTokenName, out assertion)
&& TryGetNestedPolicyAlternatives(importer, assertion, out alternatives))
{
foreach (Collection<XmlElement> alternative in alternatives)
{
SecurityTokenParameters tokenParameters;
bool isOptional;
if (TryImportTokenAssertion(importer, policyContext, alternative, out tokenParameters, out isOptional)
&& alternative.Count == 0)
{
result = true;
binding.ProtectionTokenParameters = tokenParameters;
break;
}
}
}
return result;
}
public virtual bool TryImportWsspInitiatorTokenAssertion(MetadataImporter importer, PolicyConversionContext policyContext, ICollection<XmlElement> assertions, AsymmetricSecurityBindingElement binding)
{
bool result = false;
XmlElement assertion;
Collection<Collection<XmlElement>> alternatives;
if (TryImportWsspAssertion(assertions, InitiatorTokenName, out assertion)
&& TryGetNestedPolicyAlternatives(importer, assertion, out alternatives))
{
foreach (Collection<XmlElement> alternative in alternatives)
{
SecurityTokenParameters tokenParameters;
bool isOptional;
if (TryImportTokenAssertion(importer, policyContext, alternative, out tokenParameters, out isOptional)
&& alternative.Count == 0)
{
result = true;
binding.InitiatorTokenParameters = tokenParameters;
break;
}
}
}
return result;
}
public virtual bool TryImportWsspRecipientTokenAssertion(MetadataImporter importer, PolicyConversionContext policyContext, ICollection<XmlElement> assertions, AsymmetricSecurityBindingElement binding)
{
bool result = false;
XmlElement assertion;
Collection<Collection<XmlElement>> alternatives;
if (TryImportWsspAssertion(assertions, RecipientTokenName, out assertion)
&& TryGetNestedPolicyAlternatives(importer, assertion, out alternatives))
{
foreach (Collection<XmlElement> alternative in alternatives)
{
SecurityTokenParameters tokenParameters;
bool isOptional;
if (TryImportTokenAssertion(importer, policyContext, alternative, out tokenParameters, out isOptional)
&& alternative.Count == 0)
{
result = true;
binding.RecipientTokenParameters = tokenParameters;
break;
}
}
}
return result;
}
public virtual XmlElement CreateWsspInitiatorTokenAssertion(MetadataExporter exporter, SecurityTokenParameters parameters)
{
XmlElement result = CreateWsspAssertion(InitiatorTokenName);
result.AppendChild(
CreateWspPolicyWrapper(
exporter,
CreateTokenAssertion(exporter, parameters)
));
return result;
}
public virtual XmlElement CreateWsspRecipientTokenAssertion(MetadataExporter exporter, SecurityTokenParameters parameters)
{
XmlElement result = CreateWsspAssertion(RecipientTokenName);
result.AppendChild(
CreateWspPolicyWrapper(
exporter,
CreateTokenAssertion(exporter, parameters)
));
return result;
}
public virtual XmlElement CreateWsspTransportTokenAssertion(MetadataExporter exporter, XmlElement transportTokenAssertion)
{
if (transportTokenAssertion == null)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull("transportTokenAssertion");
}
XmlElement result = CreateWsspAssertion(TransportTokenName);
result.AppendChild(
CreateWspPolicyWrapper(
exporter,
(XmlElement)(doc.ImportNode(transportTokenAssertion, true))
));
return result;
}
public virtual bool TryImportWsspTransportTokenAssertion(MetadataImporter importer, ICollection<XmlElement> assertions, out XmlElement transportBindingAssertion)
{
transportBindingAssertion = null;
XmlElement assertion;
Collection<Collection<XmlElement>> alternatives;
if (TryImportWsspAssertion(assertions, TransportTokenName, out assertion)
&& TryGetNestedPolicyAlternatives(importer, assertion, out alternatives)
&& alternatives.Count == 1
&& alternatives[0].Count == 1)
{
// we cannot process choices of transport tokens due to the current contract between
// security and transport binding element converters
transportBindingAssertion = alternatives[0][0];
}
return transportBindingAssertion != null;
}
public virtual XmlElement CreateTokenAssertion(MetadataExporter exporter, SecurityTokenParameters parameters)
{
return CreateTokenAssertion(exporter, parameters, false);
}
public virtual XmlElement CreateTokenAssertion(MetadataExporter exporter, SecurityTokenParameters parameters, bool isOptional)
{
if (parameters == null)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull("parameters");
}
XmlElement result;
if (parameters is KerberosSecurityTokenParameters)
{
result = CreateWsspKerberosTokenAssertion(exporter, (KerberosSecurityTokenParameters)parameters);
}
else if (parameters is X509SecurityTokenParameters)
{
result = CreateWsspX509TokenAssertion(exporter, (X509SecurityTokenParameters)parameters);
}
else if (parameters is UserNameSecurityTokenParameters)
{
result = CreateWsspUsernameTokenAssertion(exporter, (UserNameSecurityTokenParameters)parameters);
}
else if (parameters is IssuedSecurityTokenParameters)
{
result = CreateWsspIssuedTokenAssertion(exporter, (IssuedSecurityTokenParameters)parameters);
}
else if (parameters is SspiSecurityTokenParameters)
{
result = CreateWsspSpnegoContextTokenAssertion(exporter, (SspiSecurityTokenParameters)parameters);
}
else if (parameters is SslSecurityTokenParameters)
{
result = CreateMsspSslContextTokenAssertion(exporter, (SslSecurityTokenParameters)parameters);
}
else if (parameters is SecureConversationSecurityTokenParameters)
{
result = CreateWsspSecureConversationTokenAssertion(exporter, (SecureConversationSecurityTokenParameters)parameters);
}
else if (parameters is RsaSecurityTokenParameters)
{
result = CreateWsspRsaTokenAssertion((RsaSecurityTokenParameters)parameters);
}
else
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new ArgumentOutOfRangeException("parameters"));
}
if (result != null && isOptional)
{
result.SetAttribute(OptionalName, exporter.PolicyVersion.Namespace, TrueName);
}
return result;
}
public virtual bool TryImportTokenAssertion(MetadataImporter importer, PolicyConversionContext policyContext, Collection<XmlElement> assertions, out SecurityTokenParameters parameters, out bool isOptional)
{
parameters = null;
isOptional = false;
if (assertions.Count >= 1)
{
XmlElement tokenAssertion = assertions[0];
if (TryImportWsspKerberosTokenAssertion(importer, tokenAssertion, out parameters)
|| TryImportWsspX509TokenAssertion(importer, tokenAssertion, out parameters)
|| TryImportWsspUsernameTokenAssertion(importer, tokenAssertion, out parameters)
|| TryImportWsspIssuedTokenAssertion(importer, policyContext, tokenAssertion, out parameters)
|| TryImportWsspSpnegoContextTokenAssertion(importer, tokenAssertion, out parameters)
|| TryImportMsspSslContextTokenAssertion(importer, tokenAssertion, out parameters)
|| TryImportWsspSecureConversationTokenAssertion(importer, tokenAssertion, out parameters)
|| TryImportWsspRsaTokenAssertion(importer, tokenAssertion, out parameters))
{
string optionalAttribute = tokenAssertion.GetAttribute(OptionalName, WspNamespace);
if (String.IsNullOrEmpty(optionalAttribute))
{
optionalAttribute = tokenAssertion.GetAttribute(OptionalName, Wsp15Namespace);
}
try
{
isOptional = XmlUtil.IsTrue(optionalAttribute);
}
catch ( Exception e )
{
if (Fx.IsFatal(e))
throw;
if (e is NullReferenceException)
throw;
importer.Errors.Add(new MetadataConversionError(SR.GetString(SR.UnsupportedBooleanAttribute, OptionalName, e.Message), false));
return false;
}
assertions.RemoveAt(0);
}
}
return (parameters != null);
}
public virtual void SetIncludeTokenValue(XmlElement tokenAssertion, SecurityTokenInclusionMode inclusionMode)
{
switch (inclusionMode)
{
default:
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new ArgumentOutOfRangeException("inclusionMode"));
case SecurityTokenInclusionMode.AlwaysToInitiator:
tokenAssertion.SetAttribute(IncludeTokenName, this.WsspNamespaceUri, AlwaysToInitiatorUri);
break;
case SecurityTokenInclusionMode.AlwaysToRecipient:
tokenAssertion.SetAttribute(IncludeTokenName, this.WsspNamespaceUri, AlwaysToRecipientUri);
break;
case SecurityTokenInclusionMode.Never:
tokenAssertion.SetAttribute(IncludeTokenName, this.WsspNamespaceUri, NeverUri);
break;
case SecurityTokenInclusionMode.Once:
tokenAssertion.SetAttribute(IncludeTokenName, this.WsspNamespaceUri, OnceUri);
break;
}
}
public virtual bool TryGetIncludeTokenValue(XmlElement assertion, out SecurityTokenInclusionMode mode)
{
string includeTokenUri = assertion.GetAttribute(IncludeTokenName, this.WsspNamespaceUri);
if (includeTokenUri == AlwaysToInitiatorUri)
{
mode = SecurityTokenInclusionMode.AlwaysToInitiator;
return true;
}
else if (includeTokenUri == AlwaysToRecipientUri)
{
mode = SecurityTokenInclusionMode.AlwaysToRecipient;
return true;
}
else if (includeTokenUri == NeverUri)
{
mode = SecurityTokenInclusionMode.Never;
return true;
}
else if (includeTokenUri == OnceUri)
{
mode = SecurityTokenInclusionMode.Once;
return true;
}
else
{
mode = SecurityTokenInclusionMode.Never;
return false;
}
}
public virtual XmlElement CreateWsspRequireDerivedKeysAssertion(bool requireDerivedKeys)
{
if (requireDerivedKeys)
{
return CreateWsspAssertion(RequireDerivedKeysName);
}
else
{
return null;
}
}
public virtual bool TryImportWsspRequireDerivedKeysAssertion(ICollection<XmlElement> assertions, SecurityTokenParameters parameters)
{
parameters.RequireDerivedKeys = TryImportWsspAssertion(assertions, RequireDerivedKeysName);
return true;
}
public virtual XmlElement CreateWsspKerberosTokenAssertion(MetadataExporter exporter, KerberosSecurityTokenParameters parameters)
{
XmlElement result = CreateWsspAssertion(KerberosTokenName);
SetIncludeTokenValue(result, parameters.InclusionMode);
result.AppendChild(
CreateWspPolicyWrapper(
exporter,
CreateWsspRequireDerivedKeysAssertion(parameters.RequireDerivedKeys),
CreateWsspAssertion(WssGssKerberosV5ApReqToken11Name)
));
return result;
}
public virtual bool TryImportWsspKerberosTokenAssertion(MetadataImporter importer, XmlElement assertion, out SecurityTokenParameters parameters)
{
parameters = null;
SecurityTokenInclusionMode inclusionMode;
Collection<Collection<XmlElement>> alternatives;
if (IsWsspAssertion(assertion, KerberosTokenName)
&& TryGetIncludeTokenValue(assertion, out inclusionMode))
{
if (TryGetNestedPolicyAlternatives(importer, assertion, out alternatives))
{
foreach (Collection<XmlElement> alternative in alternatives)
{
parameters = new KerberosSecurityTokenParameters();
if (TryImportWsspRequireDerivedKeysAssertion(alternative, parameters)
&& TryImportWsspAssertion(alternative, WssGssKerberosV5ApReqToken11Name, true)
&& alternative.Count == 0)
{
parameters.InclusionMode = inclusionMode;
break;
}
else
{
parameters = null;
}
}
}
else
{
parameters = new KerberosSecurityTokenParameters();
parameters.RequireDerivedKeys = false;
parameters.InclusionMode = inclusionMode;
}
}
return parameters != null;
}
public virtual XmlElement CreateX509ReferenceStyleAssertion(X509KeyIdentifierClauseType referenceStyle)
{
switch (referenceStyle)
{
default:
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new ArgumentOutOfRangeException("referenceStyle"));
case X509KeyIdentifierClauseType.IssuerSerial:
_mustSupportRefIssuerSerialName = true;
return CreateWsspAssertion(RequireIssuerSerialReferenceName);
case X509KeyIdentifierClauseType.SubjectKeyIdentifier:
_mustSupportRefKeyIdentifierName = true;
return CreateWsspAssertion(RequireKeyIdentifierReferenceName);
case X509KeyIdentifierClauseType.Thumbprint:
_mustSupportRefThumbprintName = true;
return CreateWsspAssertion(RequireThumbprintReferenceName);
case X509KeyIdentifierClauseType.Any:
_mustSupportRefIssuerSerialName = true;
_mustSupportRefKeyIdentifierName = true;
_mustSupportRefThumbprintName = true;
return null;
}
}
public virtual bool TryImportX509ReferenceStyleAssertion(ICollection<XmlElement> assertions, X509SecurityTokenParameters parameters)
{
if (TryImportWsspAssertion(assertions, RequireIssuerSerialReferenceName))
{
parameters.X509ReferenceStyle = X509KeyIdentifierClauseType.IssuerSerial;
}
else if (TryImportWsspAssertion(assertions, RequireKeyIdentifierReferenceName))
{
parameters.X509ReferenceStyle = X509KeyIdentifierClauseType.SubjectKeyIdentifier;
}
else if (TryImportWsspAssertion(assertions, RequireThumbprintReferenceName))
{
parameters.X509ReferenceStyle = X509KeyIdentifierClauseType.Thumbprint;
}
return true;
}
public virtual XmlElement CreateWsspX509TokenAssertion(MetadataExporter exporter, X509SecurityTokenParameters parameters)
{
XmlElement result = CreateWsspAssertion(X509TokenName);
SetIncludeTokenValue(result, parameters.InclusionMode);
result.AppendChild(
CreateWspPolicyWrapper(
exporter,
CreateWsspRequireDerivedKeysAssertion(parameters.RequireDerivedKeys),
CreateX509ReferenceStyleAssertion(parameters.X509ReferenceStyle),
CreateWsspAssertion(WssX509V3Token10Name)
));
return result;
}
public virtual bool TryImportWsspX509TokenAssertion(MetadataImporter importer, XmlElement assertion, out SecurityTokenParameters parameters)
{
parameters = null;
SecurityTokenInclusionMode inclusionMode;
Collection<Collection<XmlElement>> alternatives;
if (IsWsspAssertion(assertion, X509TokenName)
&& TryGetIncludeTokenValue(assertion, out inclusionMode))
{
if (TryGetNestedPolicyAlternatives(importer, assertion, out alternatives))
{
foreach (Collection<XmlElement> alternative in alternatives)
{
X509SecurityTokenParameters x509 = new X509SecurityTokenParameters();
parameters = x509;
if (TryImportWsspRequireDerivedKeysAssertion(alternative, x509)
&& TryImportX509ReferenceStyleAssertion(alternative, x509)
&& TryImportWsspAssertion(alternative, WssX509V3Token10Name, true)
&& alternative.Count == 0)
{
parameters.InclusionMode = inclusionMode;
break;
}
else
{
parameters = null;
}
}
}
else
{
parameters = new X509SecurityTokenParameters();
parameters.RequireDerivedKeys = false;
parameters.InclusionMode = inclusionMode;
}
}
return parameters != null;
}
public virtual XmlElement CreateWsspUsernameTokenAssertion(MetadataExporter exporter, UserNameSecurityTokenParameters parameters)
{
XmlElement result = CreateWsspAssertion(UsernameTokenName);
SetIncludeTokenValue(result, parameters.InclusionMode);
result.AppendChild(
CreateWspPolicyWrapper(
exporter,
CreateWsspAssertion(WssUsernameToken10Name)
));
return result;
}
public virtual bool TryImportWsspUsernameTokenAssertion(MetadataImporter importer, XmlElement assertion, out SecurityTokenParameters parameters)
{
parameters = null;
SecurityTokenInclusionMode inclusionMode;
Collection<Collection<XmlElement>> alternatives;
if (IsWsspAssertion(assertion, UsernameTokenName)
&& TryGetIncludeTokenValue(assertion, out inclusionMode))
{
if (TryGetNestedPolicyAlternatives(importer, assertion, out alternatives))
{
foreach (Collection<XmlElement> alternative in alternatives)
{
if (TryImportWsspAssertion(alternative, WssUsernameToken10Name)
&& alternative.Count == 0)
{
parameters = new UserNameSecurityTokenParameters();
parameters.InclusionMode = inclusionMode;
break;
}
}
}
else
{
parameters = new UserNameSecurityTokenParameters();
parameters.InclusionMode = inclusionMode;
}
}
return parameters != null;
}
public virtual XmlElement CreateWsspRsaTokenAssertion(RsaSecurityTokenParameters parameters)
{
XmlElement result = CreateMsspAssertion(RsaTokenName);
SetIncludeTokenValue(result, parameters.InclusionMode);
return result;
}
public virtual bool TryImportWsspRsaTokenAssertion(MetadataImporter importer, XmlElement assertion, out SecurityTokenParameters parameters)
{
parameters = null;
SecurityTokenInclusionMode inclusionMode;
Collection<Collection<XmlElement>> alternatives;
if (IsMsspAssertion(assertion, RsaTokenName)
&& TryGetIncludeTokenValue(assertion, out inclusionMode)
&& TryGetNestedPolicyAlternatives(importer, assertion, out alternatives) == false)
{
parameters = new RsaSecurityTokenParameters();
parameters.InclusionMode = inclusionMode;
}
return parameters != null;
}
public virtual XmlElement CreateReferenceStyleAssertion(SecurityTokenReferenceStyle referenceStyle)
{
switch (referenceStyle)
{
default:
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new ArgumentOutOfRangeException("referenceStyle"));
case SecurityTokenReferenceStyle.External:
return CreateWsspAssertion(RequireExternalReferenceName);
case SecurityTokenReferenceStyle.Internal:
return CreateWsspAssertion(RequireInternalReferenceName);
}
}
public virtual bool TryImportReferenceStyleAssertion(ICollection<XmlElement> assertions, IssuedSecurityTokenParameters parameters)
{
if (TryImportWsspAssertion(assertions, RequireExternalReferenceName))
{
parameters.ReferenceStyle = SecurityTokenReferenceStyle.External;
}
else if (TryImportWsspAssertion(assertions, RequireInternalReferenceName))
{
parameters.ReferenceStyle = SecurityTokenReferenceStyle.Internal;
}
return true;
}
public virtual XmlElement CreateWsspIssuerElement(EndpointAddress issuerAddress, EndpointAddress issuerMetadataAddress)
{
XmlElement result;
if (issuerAddress == null && issuerMetadataAddress == null)
{
result = null;
}
else
{
EndpointAddress addressToSerialize;
addressToSerialize = issuerAddress == null ? EndpointAddress.AnonymousAddress : issuerAddress;
MemoryStream stream;
XmlWriter writer;
if (issuerMetadataAddress != null)
{
MetadataSet metadataSet = new MetadataSet();
metadataSet.MetadataSections.Add(new MetadataSection(null, null, new MetadataReference(issuerMetadataAddress, AddressingVersion.WSAddressing10)));
stream = new MemoryStream();
writer = new XmlTextWriter(stream, System.Text.Encoding.UTF8);
metadataSet.WriteTo(XmlDictionaryWriter.CreateDictionaryWriter(writer));
writer.Flush();
stream.Seek(0, SeekOrigin.Begin);
addressToSerialize = new EndpointAddress(
addressToSerialize.Uri,
addressToSerialize.Identity,
addressToSerialize.Headers,
XmlDictionaryReader.CreateDictionaryReader(XmlReader.Create(stream)),
addressToSerialize.GetReaderAtExtensions());
}
stream = new MemoryStream();
writer = new XmlTextWriter(stream, System.Text.Encoding.UTF8);
writer.WriteStartElement(IssuerName, this.WsspNamespaceUri);
addressToSerialize.WriteContentsTo(AddressingVersion.WSAddressing10, writer);
writer.WriteEndElement();
writer.Flush();
stream.Seek(0, SeekOrigin.Begin);
result = (XmlElement)doc.ReadNode(new XmlTextReader(stream) { DtdProcessing = DtdProcessing.Prohibit });
}
return result;
}
public virtual bool TryGetIssuer(XmlElement assertion, out EndpointAddress issuer, out EndpointAddress issuerMetadata)
{
bool result = true;
issuer = null;
issuerMetadata = null;
foreach (XmlNode node in assertion.ChildNodes)
{
if (node is XmlElement && IsWsspAssertion((XmlElement)node, IssuerName))
{
try
{
issuer = EndpointAddress.ReadFrom(XmlDictionaryReader.CreateDictionaryReader(new XmlNodeReader(node)));
XmlDictionaryReader metadataReader = issuer.GetReaderAtMetadata();
if (metadataReader != null)
{
while (metadataReader.MoveToContent() == XmlNodeType.Element)
{
if (metadataReader.LocalName == MetadataStrings.MetadataExchangeStrings.Metadata
&& metadataReader.NamespaceURI == MetadataStrings.MetadataExchangeStrings.Namespace)
{
MetadataSet metadataSet = MetadataSet.ReadFrom(metadataReader);
foreach (MetadataSection section in metadataSet.MetadataSections)
{
if (section.Metadata is MetadataReference)
{
issuerMetadata = ((MetadataReference)section.Metadata).Address;
}
}
break;
}
else
{
metadataReader.Skip();
}
}
}
}
catch (Exception e)
{
if (Fx.IsFatal(e))
throw;
if (e is NullReferenceException)
throw;
result = false;
}
break;
}
}
return result;
}
public virtual XmlElement CreateWsspIssuedTokenAssertion(MetadataExporter exporter, IssuedSecurityTokenParameters parameters)
{
XmlElement result = CreateWsspAssertion(IssuedTokenName);
SetIncludeTokenValue(result, parameters.InclusionMode);
XmlElement issuerAssertion = CreateWsspIssuerElement(parameters.IssuerAddress, parameters.IssuerMetadataAddress);
if (issuerAssertion != null)
{
result.AppendChild(issuerAssertion);
}
XmlElement tokenTemplate = CreateWsspAssertion(RequestSecurityTokenTemplateName);
TrustDriver driver = this.TrustDriver;
foreach (XmlElement p in parameters.CreateRequestParameters(driver))
{
tokenTemplate.AppendChild(doc.ImportNode(p, true));
}
result.AppendChild(tokenTemplate);
result.AppendChild(
CreateWspPolicyWrapper(
exporter,
CreateWsspRequireDerivedKeysAssertion(parameters.RequireDerivedKeys),
CreateReferenceStyleAssertion(parameters.ReferenceStyle)
));
return result;
}
public virtual bool TryGetRequestSecurityTokenTemplate(XmlElement assertion, out Collection<XmlElement> requestParameters)
{
requestParameters = null;
foreach (XmlNode node in assertion.ChildNodes)
{
if (node is XmlElement && IsWsspAssertion((XmlElement)node, RequestSecurityTokenTemplateName))
{
requestParameters = new Collection<XmlElement>();
foreach (XmlNode p in node.ChildNodes)
{
if (p is XmlElement)
{
requestParameters.Add((XmlElement)p);
}
}
}
}
return requestParameters != null;
}
public virtual bool TryImportWsspIssuedTokenAssertion(MetadataImporter importer, PolicyConversionContext policyContext, XmlElement assertion, out SecurityTokenParameters parameters)
{
parameters = null;
SecurityTokenInclusionMode inclusionMode;
Collection<Collection<XmlElement>> alternatives;
EndpointAddress issuer;
EndpointAddress issuerMetadata;
Collection<XmlElement> requestSecurityTokenTemplate;
if (IsWsspAssertion(assertion, IssuedTokenName)
&& TryGetIncludeTokenValue(assertion, out inclusionMode)
&& TryGetIssuer(assertion, out issuer, out issuerMetadata)
&& TryGetRequestSecurityTokenTemplate(assertion, out requestSecurityTokenTemplate))
{
if (TryGetNestedPolicyAlternatives(importer, assertion, out alternatives))
{
foreach (Collection<XmlElement> alternative in alternatives)
{
IssuedSecurityTokenParameters issued = new IssuedSecurityTokenParameters();
parameters = issued;
if (TryImportWsspRequireDerivedKeysAssertion(alternative, issued)
&& TryImportReferenceStyleAssertion(alternative, issued)
&& alternative.Count == 0)
{
issued.InclusionMode = inclusionMode;
issued.IssuerAddress = issuer;
issued.IssuerMetadataAddress = issuerMetadata;
issued.SetRequestParameters(requestSecurityTokenTemplate, this.TrustDriver);
TokenIssuerPolicyResolver policyResolver = new TokenIssuerPolicyResolver(this.TrustDriver);
policyResolver.ResolveTokenIssuerPolicy(importer, policyContext, issued);
break;
}
else
{
parameters = null;
}
}
}
else
{
IssuedSecurityTokenParameters issued = new IssuedSecurityTokenParameters();
parameters = issued;
issued.InclusionMode = inclusionMode;
issued.IssuerAddress = issuer;
issued.IssuerMetadataAddress = issuerMetadata;
issued.SetRequestParameters(requestSecurityTokenTemplate, this.TrustDriver);
issued.RequireDerivedKeys = false;
}
}
return parameters != null;
}
public virtual XmlElement CreateWsspMustNotSendCancelAssertion(bool requireCancel)
{
if (!requireCancel)
{
XmlElement result = CreateWsspAssertion(MustNotSendCancelName);
return result;
}
else
{
return null;
}
}
public virtual bool TryImportWsspMustNotSendCancelAssertion(ICollection<XmlElement> assertions, out bool requireCancellation)
{
requireCancellation = !TryImportWsspAssertion(assertions, MustNotSendCancelName);
return true;
}
public virtual XmlElement CreateWsspSpnegoContextTokenAssertion(MetadataExporter exporter, SspiSecurityTokenParameters parameters)
{
XmlElement result = CreateWsspAssertion(SpnegoContextTokenName);
SetIncludeTokenValue(result, parameters.InclusionMode);
result.AppendChild(
CreateWspPolicyWrapper(
exporter,
CreateWsspRequireDerivedKeysAssertion(parameters.RequireDerivedKeys),
CreateWsspMustNotSendCancelAssertion(parameters.RequireCancellation)
));
return result;
}
public virtual bool TryImportWsspSpnegoContextTokenAssertion(MetadataImporter importer, XmlElement assertion, out SecurityTokenParameters parameters)
{
parameters = null;
SecurityTokenInclusionMode inclusionMode;
Collection<Collection<XmlElement>> alternatives;
if (IsWsspAssertion(assertion, SpnegoContextTokenName)
&& TryGetIncludeTokenValue(assertion, out inclusionMode))
{
if (TryGetNestedPolicyAlternatives(importer, assertion, out alternatives))
{
foreach (Collection<XmlElement> alternative in alternatives)
{
SspiSecurityTokenParameters sspi = new SspiSecurityTokenParameters();
parameters = sspi;
bool requireCancellation;
if (TryImportWsspRequireDerivedKeysAssertion(alternative, sspi)
&& TryImportWsspMustNotSendCancelAssertion(alternative, out requireCancellation)
&& alternative.Count == 0)
{
sspi.RequireCancellation = requireCancellation;
sspi.InclusionMode = inclusionMode;
break;
}
else
{
parameters = null;
}
}
}
else
{
parameters = new SspiSecurityTokenParameters();
parameters.RequireDerivedKeys = false;
parameters.InclusionMode = inclusionMode;
}
}
return parameters != null;
}
public abstract XmlElement CreateWsspHttpsTokenAssertion(MetadataExporter exporter, HttpsTransportBindingElement httpsBinding);
public abstract bool TryImportWsspHttpsTokenAssertion(MetadataImporter importer, ICollection<XmlElement> assertions, HttpsTransportBindingElement httpsBinding);
public virtual bool ContainsWsspHttpsTokenAssertion(ICollection<XmlElement> assertions)
{
return (PolicyConversionContext.FindAssertion(assertions, HttpsTokenName, this.WsspNamespaceUri, false) != null);
}
public virtual XmlElement CreateMsspRequireClientCertificateAssertion(bool requireClientCertificate)
{
if (requireClientCertificate)
{
return CreateMsspAssertion(RequireClientCertificateName);
}
else
{
return null;
}
}
public virtual bool TryImportMsspRequireClientCertificateAssertion(ICollection<XmlElement> assertions, SslSecurityTokenParameters parameters)
{
parameters.RequireClientCertificate = TryImportMsspAssertion(assertions, RequireClientCertificateName);
return true;
}
public virtual XmlElement CreateMsspSslContextTokenAssertion(MetadataExporter exporter, SslSecurityTokenParameters parameters)
{
XmlElement result = CreateMsspAssertion(SslContextTokenName);
SetIncludeTokenValue(result, parameters.InclusionMode);
result.AppendChild(
CreateWspPolicyWrapper(
exporter,
CreateWsspRequireDerivedKeysAssertion(parameters.RequireDerivedKeys),
CreateWsspMustNotSendCancelAssertion(parameters.RequireCancellation),
CreateMsspRequireClientCertificateAssertion(parameters.RequireClientCertificate)
));
return result;
}
public virtual bool TryImportMsspSslContextTokenAssertion(MetadataImporter importer, XmlElement assertion, out SecurityTokenParameters parameters)
{
parameters = null;
SecurityTokenInclusionMode inclusionMode;
Collection<Collection<XmlElement>> alternatives;
if (IsMsspAssertion(assertion, SslContextTokenName)
&& TryGetIncludeTokenValue(assertion, out inclusionMode))
{
if (TryGetNestedPolicyAlternatives(importer, assertion, out alternatives))
{
foreach (Collection<XmlElement> alternative in alternatives)
{
SslSecurityTokenParameters ssl = new SslSecurityTokenParameters();
parameters = ssl;
bool requireCancellation;
if (TryImportWsspRequireDerivedKeysAssertion(alternative, ssl)
&& TryImportWsspMustNotSendCancelAssertion(alternative, out requireCancellation)
&& TryImportMsspRequireClientCertificateAssertion(alternative, ssl)
&& alternative.Count == 0)
{
ssl.RequireCancellation = requireCancellation;
ssl.InclusionMode = inclusionMode;
break;
}
else
{
parameters = null;
}
}
}
else
{
parameters = new SslSecurityTokenParameters();
parameters.RequireDerivedKeys = false;
parameters.InclusionMode = inclusionMode;
}
}
return parameters != null;
}
public virtual XmlElement CreateWsspBootstrapPolicyAssertion(MetadataExporter exporter, SecurityBindingElement bootstrapSecurity)
{
if (bootstrapSecurity == null)
throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull("bootstrapBinding");
WSSecurityPolicy sp = WSSecurityPolicy.GetSecurityPolicyDriver(bootstrapSecurity.MessageSecurityVersion);
// create complete bootstrap binding
CustomBinding bootstrapBinding = new CustomBinding(bootstrapSecurity);
if (exporter.State.ContainsKey(SecurityPolicyStrings.SecureConversationBootstrapBindingElementsBelowSecurityKey))
{
BindingElementCollection bindingElementsBelowSecurity = exporter.State[SecurityPolicyStrings.SecureConversationBootstrapBindingElementsBelowSecurityKey] as BindingElementCollection;
if (bindingElementsBelowSecurity != null)
{
foreach (BindingElement be in bindingElementsBelowSecurity)
{
bootstrapBinding.Elements.Add(be);
}
}
}
// generate policy for the "how" of security
ServiceEndpoint bootstrapEndpoint = new ServiceEndpoint(NullContract);
bootstrapEndpoint.Binding = bootstrapBinding;
PolicyConversionContext policyContext = exporter.ExportPolicy(bootstrapEndpoint);
// generate policy for the "what" of security (protection assertions)
// hard-coded requirements in V1: sign and encrypt RST and RSTR body
ChannelProtectionRequirements bootstrapProtection = new ChannelProtectionRequirements();
bootstrapProtection.IncomingEncryptionParts.AddParts(new MessagePartSpecification(true));
bootstrapProtection.OutgoingEncryptionParts.AddParts(new MessagePartSpecification(true));
bootstrapProtection.IncomingSignatureParts.AddParts(new MessagePartSpecification(true));
bootstrapProtection.OutgoingSignatureParts.AddParts(new MessagePartSpecification(true));
// add boostrap binding protection requirements (e.g. addressing headers)
ChannelProtectionRequirements cpr = bootstrapBinding.GetProperty<ChannelProtectionRequirements>(new BindingParameterCollection());
if (cpr != null)
{
bootstrapProtection.Add(cpr);
}
// extract channel-scope protection requirements and union them across request and response
MessagePartSpecification encryption = new MessagePartSpecification();
encryption.Union(bootstrapProtection.IncomingEncryptionParts.ChannelParts);
encryption.Union(bootstrapProtection.OutgoingEncryptionParts.ChannelParts);
encryption.MakeReadOnly();
MessagePartSpecification signature = new MessagePartSpecification();
signature.Union(bootstrapProtection.IncomingSignatureParts.ChannelParts);
signature.Union(bootstrapProtection.OutgoingSignatureParts.ChannelParts);
signature.MakeReadOnly();
// create final boostrap policy assertion
XmlElement nestedPolicy = CreateWspPolicyWrapper(
exporter,
sp.CreateWsspSignedPartsAssertion(signature),
sp.CreateWsspEncryptedPartsAssertion(encryption));
foreach (XmlElement e in sp.FilterWsspPolicyAssertions(policyContext.GetBindingAssertions()))
{
nestedPolicy.AppendChild(e);
}
XmlElement result = CreateWsspAssertion(BootstrapPolicyName);
result.AppendChild(nestedPolicy);
return result;
}
public virtual ICollection<XmlElement> FilterWsspPolicyAssertions(ICollection<XmlElement> policyAssertions)
{
Collection<XmlElement> result = new Collection<XmlElement>();
foreach (XmlElement assertion in policyAssertions)
if (IsWsspAssertion(assertion))
result.Add(assertion);
return result;
}
public virtual bool TryImportWsspBootstrapPolicyAssertion(MetadataImporter importer, ICollection<XmlElement> assertions, SecureConversationSecurityTokenParameters parameters)
{
bool result = false;
XmlElement assertion;
Collection<Collection<XmlElement>> alternatives;
if (TryImportWsspAssertion(assertions, BootstrapPolicyName, out assertion)
&& TryGetNestedPolicyAlternatives(importer, assertion, out alternatives))
{
BindingElementCollection bindingElements;
importer.State[SecurityBindingElementImporter.InSecureConversationBootstrapBindingImportMode] = SecurityBindingElementImporter.InSecureConversationBootstrapBindingImportMode;
try
{
bindingElements = importer.ImportPolicy(NullServiceEndpoint, alternatives);
if (importer.State.ContainsKey(SecurityBindingElementImporter.SecureConversationBootstrapEncryptionRequirements))
{
MessagePartSpecification encryption = (MessagePartSpecification)importer.State[SecurityBindingElementImporter.SecureConversationBootstrapEncryptionRequirements];
if (encryption.IsBodyIncluded != true)
{
importer.Errors.Add(new MetadataConversionError(SR.GetString(SR.UnsupportedSecureConversationBootstrapProtectionRequirements), false));
bindingElements = null;
}
}
if (importer.State.ContainsKey(SecurityBindingElementImporter.SecureConversationBootstrapSignatureRequirements))
{
MessagePartSpecification signature = (MessagePartSpecification)importer.State[SecurityBindingElementImporter.SecureConversationBootstrapSignatureRequirements];
if (signature.IsBodyIncluded != true)
{
importer.Errors.Add(new MetadataConversionError(SR.GetString(SR.UnsupportedSecureConversationBootstrapProtectionRequirements), false));
bindingElements = null;
}
}
}
finally
{
importer.State.Remove(SecurityBindingElementImporter.InSecureConversationBootstrapBindingImportMode);
if (importer.State.ContainsKey(SecurityBindingElementImporter.SecureConversationBootstrapEncryptionRequirements))
importer.State.Remove(SecurityBindingElementImporter.SecureConversationBootstrapEncryptionRequirements);
if (importer.State.ContainsKey(SecurityBindingElementImporter.SecureConversationBootstrapSignatureRequirements))
importer.State.Remove(SecurityBindingElementImporter.SecureConversationBootstrapSignatureRequirements);
}
if (bindingElements != null)
{
parameters.BootstrapSecurityBindingElement = bindingElements.Find<SecurityBindingElement>();
return true;
}
else
{
parameters.BootstrapSecurityBindingElement = null;
return true; // Consider returning false here.
}
}
return result;
}
public virtual XmlElement CreateWsspSecureConversationTokenAssertion(MetadataExporter exporter, SecureConversationSecurityTokenParameters parameters)
{
XmlElement result = CreateWsspAssertion(SecureConversationTokenName);
SetIncludeTokenValue(result, parameters.InclusionMode);
result.AppendChild(
CreateWspPolicyWrapper(
exporter,
CreateWsspRequireDerivedKeysAssertion(parameters.RequireDerivedKeys),
CreateWsspMustNotSendCancelAssertion(parameters.RequireCancellation),
CreateWsspBootstrapPolicyAssertion(exporter, parameters.BootstrapSecurityBindingElement)
));
return result;
}
public virtual bool TryImportWsspSecureConversationTokenAssertion(MetadataImporter importer, XmlElement assertion, out SecurityTokenParameters parameters)
{
parameters = null;
SecurityTokenInclusionMode inclusionMode;
Collection<Collection<XmlElement>> alternatives;
if (IsWsspAssertion(assertion, SecureConversationTokenName)
&& TryGetIncludeTokenValue(assertion, out inclusionMode))
{
if (TryGetNestedPolicyAlternatives(importer, assertion, out alternatives))
{
foreach (Collection<XmlElement> alternative in alternatives)
{
SecureConversationSecurityTokenParameters sc = new SecureConversationSecurityTokenParameters();
parameters = sc;
bool requireCancellation;
if (TryImportWsspRequireDerivedKeysAssertion(alternative, sc)
&& TryImportWsspMustNotSendCancelAssertion(alternative, out requireCancellation)
&& TryImportWsspBootstrapPolicyAssertion(importer, alternative, sc)
&& alternative.Count == 0)
{
sc.RequireCancellation = requireCancellation;
sc.InclusionMode = inclusionMode;
break;
}
else
{
parameters = null;
}
}
}
else
{
parameters = new SecureConversationSecurityTokenParameters();
parameters.InclusionMode = inclusionMode;
parameters.RequireDerivedKeys = false;
}
}
return parameters != null;
}
class TokenIssuerPolicyResolver
{
const string WSIdentityNamespace = @"http://schemas.xmlsoap.org/ws/2005/05/identity";
static readonly Uri SelfIssuerUri = new Uri(WSIdentityNamespace + "/issuer/self");
TrustDriver trustDriver;
public TokenIssuerPolicyResolver(TrustDriver driver)
{
this.trustDriver = driver;
}
public void ResolveTokenIssuerPolicy(MetadataImporter importer, PolicyConversionContext policyContext, IssuedSecurityTokenParameters parameters)
{
if (policyContext == null)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull("policyContext");
}
if (parameters == null)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull("parameters");
}
EndpointAddress mexAddress = (parameters.IssuerMetadataAddress != null) ? parameters.IssuerMetadataAddress : parameters.IssuerAddress;
if (mexAddress == null || mexAddress.IsAnonymous || mexAddress.Uri.Equals(SelfIssuerUri))
{
return;
}
int maximumRedirections = (int)importer.State[SecurityBindingElementImporter.MaxPolicyRedirectionsKey];
if (maximumRedirections <= 0)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new InvalidOperationException(SR.GetString(SR.MaximumPolicyRedirectionsExceeded)));
}
--maximumRedirections;
//
// Try to retrieve the proxy from the importer.State bag so that we can have secure mex
// and it fails, then we can create a default one
//
MetadataExchangeClient policyFetcher = null;
if ((importer.State != null) && (importer.State.ContainsKey(MetadataExchangeClient.MetadataExchangeClientKey)))
{
policyFetcher = importer.State[MetadataExchangeClient.MetadataExchangeClientKey] as MetadataExchangeClient;
}
if (policyFetcher == null)
policyFetcher = new MetadataExchangeClient(mexAddress);
ServiceEndpointCollection federationEndpoints = null;
MetadataSet metadataSet = null;
Exception mexException = null;
try
{
metadataSet = policyFetcher.GetMetadata(mexAddress);
}
catch (Exception e)
{
if (Fx.IsFatal(e))
throw;
if (e is NullReferenceException)
throw;
mexException = e;
}
//
// DCR 6729: Try the http get option here if mex failed.
//
if (metadataSet == null )
{
try
{
metadataSet = policyFetcher.GetMetadata(mexAddress.Uri, MetadataExchangeClientMode.HttpGet);
}
catch (Exception e)
{
if (Fx.IsFatal(e))
throw;
if (e is NullReferenceException)
throw;
if (mexException == null)
mexException = e;
}
}
if (metadataSet == null)
{
//
// we could not retrieve the metadata from the issuer for some reason
//
if (mexException != null)
importer.Errors.Add(new MetadataConversionError(SR.GetString(SR.UnableToObtainIssuerMetadata, mexAddress, mexException), false));
return;
}
WsdlImporter wsdlImporter;
// NOTE: Microsoft, Policy import/export is seperate from WSDL however, this policy importer
// invokes the WsdlImporter. In the event that the current MetadataImporter is a WsdlImporter,
// we should use it's collection of extensions for the import process. Other wise
WsdlImporter currentWsdlImporter = importer as WsdlImporter;
if (currentWsdlImporter != null)
{
wsdlImporter = new WsdlImporter(metadataSet, importer.PolicyImportExtensions, currentWsdlImporter.WsdlImportExtensions);
}
else
{
wsdlImporter = new WsdlImporter(metadataSet, importer.PolicyImportExtensions, null);
}
//
// Copy the State from the first importer to the second one so that the state can be passed to the second round wsdl retrieval
//
if ((importer.State != null) && (importer.State.ContainsKey(MetadataExchangeClient.MetadataExchangeClientKey)))
{
wsdlImporter.State.Add(MetadataExchangeClient.MetadataExchangeClientKey, importer.State[MetadataExchangeClient.MetadataExchangeClientKey]);
}
wsdlImporter.State.Add(SecurityBindingElementImporter.MaxPolicyRedirectionsKey, maximumRedirections);
federationEndpoints = wsdlImporter.ImportAllEndpoints();
// copy all the import errors into the current metadata importer
for (int i = 0; i < wsdlImporter.Errors.Count; ++i)
{
MetadataConversionError error = wsdlImporter.Errors[i];
importer.Errors.Add(new MetadataConversionError(SR.GetString(SR.ErrorImportingIssuerMetadata, mexAddress, InsertEllipsisIfTooLong(error.Message)), error.IsWarning));
}
if (federationEndpoints != null)
{
AddCompatibleFederationEndpoints(federationEndpoints, parameters);
if (parameters.AlternativeIssuerEndpoints != null && parameters.AlternativeIssuerEndpoints.Count > 0)
{
importer.Errors.Add(new MetadataConversionError(SR.GetString(SR.MultipleIssuerEndpointsFound, mexAddress)));
}
}
}
static string InsertEllipsisIfTooLong(string message)
{
const int MaxLength = 1024;
const string Ellipsis = "....";
if (message != null && message.Length > MaxLength)
{
return String.Format(System.Globalization.CultureInfo.InvariantCulture, "{0}{1}{2}",
message.Substring(0, (MaxLength - Ellipsis.Length) / 2),
Ellipsis,
message.Substring(message.Length - (MaxLength - Ellipsis.Length) / 2));
}
return message;
}
void AddCompatibleFederationEndpoints(ServiceEndpointCollection serviceEndpoints, IssuedSecurityTokenParameters parameters)
{
// check if an explicit issuer address has been specified. If so,add the endpoint corresponding to that address only. If not add all acceptable endpoints.
bool isIssuerSpecified = (parameters.IssuerAddress != null && !parameters.IssuerAddress.IsAnonymous);
foreach (ServiceEndpoint endpoint in serviceEndpoints)
{
TrustDriver trustDriver;
if (!TryGetTrustDriver(endpoint, out trustDriver))
{
// if endpoint does not have trustDriver, assume
// parent trustDriver.
trustDriver = this.trustDriver;
}
bool isFederationContract = false;
ContractDescription contract = endpoint.Contract;
for (int j = 0; j < contract.Operations.Count; ++j)
{
OperationDescription operation = contract.Operations[j];
bool hasIncomingRst = false;
bool hasOutgoingRstr = false;
for (int k = 0; k < operation.Messages.Count; ++k)
{
MessageDescription message = operation.Messages[k];
if (message.Action == trustDriver.RequestSecurityTokenAction.Value && message.Direction == MessageDirection.Input)
{
hasIncomingRst = true;
}
else if ((((trustDriver.StandardsManager.TrustVersion == TrustVersion.WSTrustFeb2005) && (message.Action == trustDriver.RequestSecurityTokenResponseAction.Value)) ||
((trustDriver.StandardsManager.TrustVersion == TrustVersion.WSTrust13) && (message.Action == trustDriver.RequestSecurityTokenResponseFinalAction.Value))) &&
message.Direction == MessageDirection.Output)
{
hasOutgoingRstr = true;
}
}
if (hasIncomingRst && hasOutgoingRstr)
{
isFederationContract = true;
break;
}
}
if (isFederationContract)
{
// skip if it is not an acceptable endpoint
if (isIssuerSpecified && !parameters.IssuerAddress.Uri.Equals(endpoint.Address.Uri))
{
continue;
}
if (parameters.IssuerBinding == null)
{
parameters.IssuerAddress = endpoint.Address;
parameters.IssuerBinding = endpoint.Binding;
}
else
{
IssuedSecurityTokenParameters.AlternativeIssuerEndpoint endpointInfo = new IssuedSecurityTokenParameters.AlternativeIssuerEndpoint();
endpointInfo.IssuerAddress = endpoint.Address;
endpointInfo.IssuerBinding = endpoint.Binding;
parameters.AlternativeIssuerEndpoints.Add(endpointInfo);
}
}
}
}
bool TryGetTrustDriver(ServiceEndpoint endpoint, out TrustDriver trustDriver)
{
SecurityBindingElement sbe = endpoint.Binding.CreateBindingElements().Find<SecurityBindingElement>();
trustDriver = null;
if (sbe != null)
{
MessageSecurityVersion messageSecurityVersion = sbe.MessageSecurityVersion;
if (messageSecurityVersion.TrustVersion == TrustVersion.WSTrustFeb2005)
{
trustDriver = new WSTrustFeb2005.DriverFeb2005(new SecurityStandardsManager(messageSecurityVersion, WSSecurityTokenSerializer.DefaultInstance));
}
else if (messageSecurityVersion.TrustVersion == TrustVersion.WSTrust13)
{
trustDriver = new WSTrustDec2005.DriverDec2005(new SecurityStandardsManager(messageSecurityVersion, WSSecurityTokenSerializer.DefaultInstance));
}
}
return trustDriver != null;
}
}
public static bool TryGetSecurityPolicyDriver(ICollection<XmlElement> assertions, out WSSecurityPolicy securityPolicy)
{
SecurityPolicyManager policyManager = new SecurityPolicyManager();
return policyManager.TryGetSecurityPolicyDriver(assertions, out securityPolicy);
}
public static WSSecurityPolicy GetSecurityPolicyDriver(MessageSecurityVersion version)
{
SecurityPolicyManager policyManager = new SecurityPolicyManager();
return policyManager.GetSecurityPolicyDriver(version);
}
class SecurityPolicyManager
{
List<WSSecurityPolicy> drivers;
public SecurityPolicyManager()
{
this.drivers = new List<WSSecurityPolicy>();
Initialize();
}
public void Initialize()
{
this.drivers.Add(new WSSecurityPolicy11());
this.drivers.Add(new WSSecurityPolicy12());
}
public bool TryGetSecurityPolicyDriver(ICollection<XmlElement> assertions, out WSSecurityPolicy securityPolicy)
{
securityPolicy = null;
for (int i = 0; i < this.drivers.Count; ++i)
{
if (this.drivers[i].CanImportAssertion(assertions))
{
securityPolicy = this.drivers[i];
return true;
}
}
return false;
}
public WSSecurityPolicy GetSecurityPolicyDriver(MessageSecurityVersion version)
{
for (int i = 0; i < this.drivers.Count; ++i)
{
if (this.drivers[i].IsSecurityVersionSupported(version))
{
return this.drivers[i];
}
}
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new NotSupportedException());
}
}
}
static class SecurityPolicyStrings
{
public const string SecureConversationBootstrapBindingElementsBelowSecurityKey = "SecureConversationBootstrapBindingElementsBelowSecurityKey";
}
}
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