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//-----------------------------------------------------------------------------
// Copyright (c) Microsoft Corporation. All rights reserved.
//-----------------------------------------------------------------------------
namespace System.ServiceModel.Channels
{
using System;
using System.ServiceModel.Description;
using System.Xml;
using System.Collections.Generic;
using System.Globalization;
using System.Runtime.Serialization;
using System.ServiceModel;
using System.ServiceModel.Security;
using System.ServiceModel.Security.Tokens;
using System.ServiceModel.Dispatcher;
using System.Net.Security;
using System.Text;
public sealed class SymmetricSecurityBindingElement : SecurityBindingElement, IPolicyExportExtension
{
MessageProtectionOrder messageProtectionOrder;
SecurityTokenParameters protectionTokenParameters;
bool requireSignatureConfirmation;
SymmetricSecurityBindingElement(SymmetricSecurityBindingElement elementToBeCloned)
: base(elementToBeCloned)
{
this.messageProtectionOrder = elementToBeCloned.messageProtectionOrder;
if (elementToBeCloned.protectionTokenParameters != null)
this.protectionTokenParameters = (SecurityTokenParameters)elementToBeCloned.protectionTokenParameters.Clone();
this.requireSignatureConfirmation = elementToBeCloned.requireSignatureConfirmation;
}
public SymmetricSecurityBindingElement()
: this((SecurityTokenParameters)null)
{
// empty
}
public SymmetricSecurityBindingElement(SecurityTokenParameters protectionTokenParameters)
: base()
{
this.messageProtectionOrder = SecurityBindingElement.defaultMessageProtectionOrder;
this.requireSignatureConfirmation = SecurityBindingElement.defaultRequireSignatureConfirmation;
this.protectionTokenParameters = protectionTokenParameters;
}
public bool RequireSignatureConfirmation
{
get
{
return this.requireSignatureConfirmation;
}
set
{
this.requireSignatureConfirmation = value;
}
}
public MessageProtectionOrder MessageProtectionOrder
{
get
{
return this.messageProtectionOrder;
}
set
{
if (!MessageProtectionOrderHelper.IsDefined(value))
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new ArgumentOutOfRangeException("value"));
this.messageProtectionOrder = value;
}
}
public SecurityTokenParameters ProtectionTokenParameters
{
get
{
return this.protectionTokenParameters;
}
set
{
this.protectionTokenParameters = value;
}
}
internal override ISecurityCapabilities GetIndividualISecurityCapabilities()
{
bool supportsServerAuthentication = false;
bool supportsClientAuthentication;
bool supportsClientWindowsIdentity;
GetSupportingTokensCapabilities(out supportsClientAuthentication, out supportsClientWindowsIdentity);
if (ProtectionTokenParameters != null)
{
supportsClientAuthentication = supportsClientAuthentication || ProtectionTokenParameters.SupportsClientAuthentication;
supportsClientWindowsIdentity = supportsClientWindowsIdentity || ProtectionTokenParameters.SupportsClientWindowsIdentity;
if (ProtectionTokenParameters.HasAsymmetricKey)
{
supportsServerAuthentication = ProtectionTokenParameters.SupportsClientAuthentication;
}
else
{
supportsServerAuthentication = ProtectionTokenParameters.SupportsServerAuthentication;
}
}
return new SecurityCapabilities(supportsClientAuthentication, supportsServerAuthentication, supportsClientWindowsIdentity,
ProtectionLevel.EncryptAndSign, ProtectionLevel.EncryptAndSign);
}
internal override bool SessionMode
{
get
{
SecureConversationSecurityTokenParameters secureConversationTokenParameters = this.ProtectionTokenParameters as SecureConversationSecurityTokenParameters;
if (secureConversationTokenParameters != null)
return secureConversationTokenParameters.RequireCancellation;
else
return false;
}
}
internal override bool SupportsDuplex
{
get { return this.SessionMode; }
}
internal override bool SupportsRequestReply
{
get { return true; }
}
public override void SetKeyDerivation(bool requireDerivedKeys)
{
base.SetKeyDerivation(requireDerivedKeys);
if (this.protectionTokenParameters != null)
this.protectionTokenParameters.RequireDerivedKeys = requireDerivedKeys;
}
internal override bool IsSetKeyDerivation(bool requireDerivedKeys)
{
if (!base.IsSetKeyDerivation(requireDerivedKeys))
return false;
if (this.protectionTokenParameters != null && this.protectionTokenParameters.RequireDerivedKeys != requireDerivedKeys)
return false;
return true;
}
internal override SecurityProtocolFactory CreateSecurityProtocolFactory<TChannel>(BindingContext context, SecurityCredentialsManager credentialsManager, bool isForService, BindingContext issuerBindingContext)
{
if (context == null)
throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull("context");
if (credentialsManager == null)
throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull("credentialsManager");
if (this.ProtectionTokenParameters == null)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new InvalidOperationException(SR.GetString(SR.SymmetricSecurityBindingElementNeedsProtectionTokenParameters, this.ToString())));
}
SymmetricSecurityProtocolFactory protocolFactory = new SymmetricSecurityProtocolFactory();
if (isForService)
{
base.ApplyAuditBehaviorSettings(context, protocolFactory);
}
protocolFactory.SecurityTokenParameters = (SecurityTokenParameters)this.ProtectionTokenParameters.Clone();
SetIssuerBindingContextIfRequired(protocolFactory.SecurityTokenParameters, issuerBindingContext);
protocolFactory.ApplyConfidentiality = true;
protocolFactory.RequireConfidentiality = true;
protocolFactory.ApplyIntegrity = true;
protocolFactory.RequireIntegrity = true;
protocolFactory.IdentityVerifier = this.LocalClientSettings.IdentityVerifier;
protocolFactory.DoRequestSignatureConfirmation = this.RequireSignatureConfirmation;
protocolFactory.MessageProtectionOrder = this.MessageProtectionOrder;
protocolFactory.ProtectionRequirements.Add(SecurityBindingElement.ComputeProtectionRequirements(this, context.BindingParameters, context.Binding.Elements, isForService));
base.ConfigureProtocolFactory(protocolFactory, credentialsManager, isForService, issuerBindingContext, context.Binding);
return protocolFactory;
}
internal override bool RequiresChannelDemuxer()
{
return (base.RequiresChannelDemuxer() || RequiresChannelDemuxer(this.ProtectionTokenParameters));
}
protected override IChannelFactory<TChannel> BuildChannelFactoryCore<TChannel>(BindingContext context)
{
ISecurityCapabilities securityCapabilities = this.GetProperty<ISecurityCapabilities>(context);
SecurityCredentialsManager credentialsManager = context.BindingParameters.Find<SecurityCredentialsManager>();
if (credentialsManager == null)
{
credentialsManager = ClientCredentials.CreateDefaultCredentials();
}
// This adds the demuxer element to the context. We add a demuxer element only if the binding is configured to do
// secure conversation or negotiation
bool requireDemuxer = RequiresChannelDemuxer();
ChannelBuilder channelBuilder = new ChannelBuilder(context, requireDemuxer);
if (requireDemuxer)
{
ApplyPropertiesOnDemuxer(channelBuilder, context);
}
BindingContext issuerBindingContext = context.Clone();
SecurityChannelFactory<TChannel> channelFactory;
if (this.ProtectionTokenParameters is SecureConversationSecurityTokenParameters)
{
SecureConversationSecurityTokenParameters scParameters = (SecureConversationSecurityTokenParameters)this.ProtectionTokenParameters;
if (scParameters.BootstrapSecurityBindingElement == null)
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new InvalidOperationException(SR.GetString(SR.SecureConversationSecurityTokenParametersRequireBootstrapBinding)));
BindingContext scIssuerBindingContext = issuerBindingContext.Clone();
scIssuerBindingContext.BindingParameters.Remove<ChannelProtectionRequirements>();
scIssuerBindingContext.BindingParameters.Add(scParameters.BootstrapProtectionRequirements);
if (scParameters.RequireCancellation)
{
SessionSymmetricMessageSecurityProtocolFactory sessionFactory = new SessionSymmetricMessageSecurityProtocolFactory();
sessionFactory.SecurityTokenParameters = scParameters.Clone();
((SecureConversationSecurityTokenParameters)sessionFactory.SecurityTokenParameters).IssuerBindingContext = scIssuerBindingContext;
sessionFactory.ApplyConfidentiality = true;
sessionFactory.RequireConfidentiality = true;
sessionFactory.ApplyIntegrity = true;
sessionFactory.RequireIntegrity = true;
sessionFactory.IdentityVerifier = this.LocalClientSettings.IdentityVerifier;
sessionFactory.DoRequestSignatureConfirmation = this.RequireSignatureConfirmation;
sessionFactory.MessageProtectionOrder = this.MessageProtectionOrder;
sessionFactory.IdentityVerifier = this.LocalClientSettings.IdentityVerifier;
sessionFactory.ProtectionRequirements.Add(SecurityBindingElement.ComputeProtectionRequirements(this, context.BindingParameters, context.Binding.Elements, false));
base.ConfigureProtocolFactory(sessionFactory, credentialsManager, false, issuerBindingContext, context.Binding);
SecuritySessionClientSettings<TChannel> sessionClientSettings = new SecuritySessionClientSettings<TChannel>();
sessionClientSettings.ChannelBuilder = channelBuilder;
sessionClientSettings.KeyRenewalInterval = this.LocalClientSettings.SessionKeyRenewalInterval;
sessionClientSettings.CanRenewSession = scParameters.CanRenewSession;
sessionClientSettings.KeyRolloverInterval = this.LocalClientSettings.SessionKeyRolloverInterval;
sessionClientSettings.TolerateTransportFailures = this.LocalClientSettings.ReconnectTransportOnFailure;
sessionClientSettings.IssuedSecurityTokenParameters = scParameters.Clone();
((SecureConversationSecurityTokenParameters)sessionClientSettings.IssuedSecurityTokenParameters).IssuerBindingContext = issuerBindingContext;
sessionClientSettings.SecurityStandardsManager = sessionFactory.StandardsManager;
sessionClientSettings.SessionProtocolFactory = sessionFactory;
channelFactory = new SecurityChannelFactory<TChannel>(securityCapabilities, context, sessionClientSettings);
}
else
{
SymmetricSecurityProtocolFactory protocolFactory = new SymmetricSecurityProtocolFactory();
protocolFactory.SecurityTokenParameters = scParameters.Clone();
((SecureConversationSecurityTokenParameters)protocolFactory.SecurityTokenParameters).IssuerBindingContext = scIssuerBindingContext;
protocolFactory.ApplyConfidentiality = true;
protocolFactory.RequireConfidentiality = true;
protocolFactory.ApplyIntegrity = true;
protocolFactory.RequireIntegrity = true;
protocolFactory.IdentityVerifier = this.LocalClientSettings.IdentityVerifier;
protocolFactory.DoRequestSignatureConfirmation = this.RequireSignatureConfirmation;
protocolFactory.MessageProtectionOrder = this.MessageProtectionOrder;
protocolFactory.ProtectionRequirements.Add(SecurityBindingElement.ComputeProtectionRequirements(this, context.BindingParameters, context.Binding.Elements, false));
base.ConfigureProtocolFactory(protocolFactory, credentialsManager, false, issuerBindingContext, context.Binding);
channelFactory = new SecurityChannelFactory<TChannel>(securityCapabilities, context, channelBuilder, protocolFactory);
}
}
else
{
SecurityProtocolFactory protocolFactory = this.CreateSecurityProtocolFactory<TChannel>(context, credentialsManager, false, issuerBindingContext);
channelFactory = new SecurityChannelFactory<TChannel>(securityCapabilities, context, channelBuilder, protocolFactory);
}
return channelFactory;
}
protected override IChannelListener<TChannel> BuildChannelListenerCore<TChannel>(BindingContext context)
{
SecurityChannelListener<TChannel> channelListener = new SecurityChannelListener<TChannel>(this, context);
SecurityCredentialsManager credentialsManager = context.BindingParameters.Find<SecurityCredentialsManager>();
if (credentialsManager == null)
credentialsManager = ServiceCredentials.CreateDefaultCredentials();
// This adds the demuxer element to the context. We add a demuxer element only if the binding is configured to do
// secure conversation or negotiation
bool requireDemuxer = RequiresChannelDemuxer();
ChannelBuilder channelBuilder = new ChannelBuilder(context, requireDemuxer);
if (requireDemuxer)
{
ApplyPropertiesOnDemuxer(channelBuilder, context);
}
BindingContext issuerBindingContext = context.Clone();
if (this.ProtectionTokenParameters is SecureConversationSecurityTokenParameters)
{
SecureConversationSecurityTokenParameters scParameters = (SecureConversationSecurityTokenParameters)this.ProtectionTokenParameters;
if (scParameters.BootstrapSecurityBindingElement == null)
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new InvalidOperationException(SR.GetString(SR.SecureConversationSecurityTokenParametersRequireBootstrapBinding)));
BindingContext scIssuerBindingContext = issuerBindingContext.Clone();
scIssuerBindingContext.BindingParameters.Remove<ChannelProtectionRequirements>();
scIssuerBindingContext.BindingParameters.Add(scParameters.BootstrapProtectionRequirements);
IMessageFilterTable<EndpointAddress> endpointFilterTable = context.BindingParameters.Find<IMessageFilterTable<EndpointAddress>>();
AddDemuxerForSecureConversation(channelBuilder, scIssuerBindingContext);
if (scParameters.RequireCancellation)
{
SessionSymmetricMessageSecurityProtocolFactory sessionFactory = new SessionSymmetricMessageSecurityProtocolFactory();
base.ApplyAuditBehaviorSettings(context, sessionFactory);
sessionFactory.SecurityTokenParameters = scParameters.Clone();
((SecureConversationSecurityTokenParameters)sessionFactory.SecurityTokenParameters).IssuerBindingContext = scIssuerBindingContext;
sessionFactory.ApplyConfidentiality = true;
sessionFactory.RequireConfidentiality = true;
sessionFactory.ApplyIntegrity = true;
sessionFactory.RequireIntegrity = true;
sessionFactory.IdentityVerifier = this.LocalClientSettings.IdentityVerifier;
sessionFactory.DoRequestSignatureConfirmation = this.RequireSignatureConfirmation;
sessionFactory.MessageProtectionOrder = this.MessageProtectionOrder;
sessionFactory.IdentityVerifier = this.LocalClientSettings.IdentityVerifier;
sessionFactory.ProtectionRequirements.Add(SecurityBindingElement.ComputeProtectionRequirements(this, context.BindingParameters, context.Binding.Elements, true));
base.ConfigureProtocolFactory(sessionFactory, credentialsManager, true, issuerBindingContext, context.Binding);
channelListener.SessionMode = true;
channelListener.SessionServerSettings.InactivityTimeout = this.LocalServiceSettings.InactivityTimeout;
channelListener.SessionServerSettings.KeyRolloverInterval = this.LocalServiceSettings.SessionKeyRolloverInterval;
channelListener.SessionServerSettings.MaximumPendingSessions = this.LocalServiceSettings.MaxPendingSessions;
channelListener.SessionServerSettings.MaximumKeyRenewalInterval = this.LocalServiceSettings.SessionKeyRenewalInterval;
channelListener.SessionServerSettings.TolerateTransportFailures = this.LocalServiceSettings.ReconnectTransportOnFailure;
channelListener.SessionServerSettings.CanRenewSession = scParameters.CanRenewSession;
channelListener.SessionServerSettings.IssuedSecurityTokenParameters = scParameters.Clone();
((SecureConversationSecurityTokenParameters)channelListener.SessionServerSettings.IssuedSecurityTokenParameters).IssuerBindingContext = scIssuerBindingContext;
channelListener.SessionServerSettings.SecurityStandardsManager = sessionFactory.StandardsManager;
channelListener.SessionServerSettings.SessionProtocolFactory = sessionFactory;
channelListener.SessionServerSettings.SessionProtocolFactory.EndpointFilterTable = endpointFilterTable;
// pass in the error handler for handling unknown security sessions - dont do this if the underlying channel is duplex since sending
// back faults in response to badly secured requests over duplex can result in DoS.
if (context.BindingParameters != null && context.BindingParameters.Find<IChannelDemuxFailureHandler>() == null
&& !IsUnderlyingListenerDuplex<TChannel>(context))
{
context.BindingParameters.Add(new SecuritySessionServerSettings.SecuritySessionDemuxFailureHandler(sessionFactory.StandardsManager));
}
}
else
{
SymmetricSecurityProtocolFactory protocolFactory = new SymmetricSecurityProtocolFactory();
base.ApplyAuditBehaviorSettings(context, protocolFactory);
protocolFactory.SecurityTokenParameters = scParameters.Clone();
((SecureConversationSecurityTokenParameters)protocolFactory.SecurityTokenParameters).IssuerBindingContext = scIssuerBindingContext;
protocolFactory.ApplyConfidentiality = true;
protocolFactory.RequireConfidentiality = true;
protocolFactory.ApplyIntegrity = true;
protocolFactory.RequireIntegrity = true;
protocolFactory.IdentityVerifier = this.LocalClientSettings.IdentityVerifier;
protocolFactory.DoRequestSignatureConfirmation = this.RequireSignatureConfirmation;
protocolFactory.MessageProtectionOrder = this.MessageProtectionOrder;
protocolFactory.ProtectionRequirements.Add(SecurityBindingElement.ComputeProtectionRequirements(this, context.BindingParameters, context.Binding.Elements, true));
protocolFactory.EndpointFilterTable = endpointFilterTable;
base.ConfigureProtocolFactory(protocolFactory, credentialsManager, true, issuerBindingContext, context.Binding);
channelListener.SecurityProtocolFactory = protocolFactory;
}
}
else
{
SecurityProtocolFactory protocolFactory = this.CreateSecurityProtocolFactory<TChannel>(context, credentialsManager, true, issuerBindingContext);
channelListener.SecurityProtocolFactory = protocolFactory;
}
channelListener.InitializeListener(channelBuilder);
return channelListener;
}
public override T GetProperty<T>(BindingContext context)
{
if (context == null)
throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull("context");
if (typeof(T) == typeof(ChannelProtectionRequirements))
{
AddressingVersion addressing = MessageVersion.Default.Addressing;
#pragma warning suppress 56506
MessageEncodingBindingElement encoding = context.Binding.Elements.Find<MessageEncodingBindingElement>();
if (encoding != null)
{
addressing = encoding.MessageVersion.Addressing;
}
ChannelProtectionRequirements myRequirements = base.GetProtectionRequirements(addressing, ProtectionLevel.EncryptAndSign);
myRequirements.Add(context.GetInnerProperty<ChannelProtectionRequirements>() ?? new ChannelProtectionRequirements());
return (T)(object)myRequirements;
}
else
{
return base.GetProperty<T>(context);
}
}
public override string ToString()
{
StringBuilder sb = new StringBuilder();
sb.AppendLine(base.ToString());
sb.AppendLine(String.Format(CultureInfo.InvariantCulture, "MessageProtectionOrder: {0}", this.messageProtectionOrder.ToString()));
sb.AppendLine(String.Format(CultureInfo.InvariantCulture, "RequireSignatureConfirmation: {0}", this.requireSignatureConfirmation.ToString()));
sb.Append("ProtectionTokenParameters: ");
if (this.protectionTokenParameters != null)
sb.AppendLine(this.protectionTokenParameters.ToString().Trim().Replace("\n", "\n "));
else
sb.AppendLine("null");
return sb.ToString().Trim();
}
public override BindingElement Clone()
{
return new SymmetricSecurityBindingElement(this);
}
void IPolicyExportExtension.ExportPolicy(MetadataExporter exporter, PolicyConversionContext context)
{
SecurityBindingElement.ExportPolicy(exporter, context);
}
}
}
|
