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//-----------------------------------------------------------------------------
// Copyright (c) Microsoft Corporation. All rights reserved.
//-----------------------------------------------------------------------------
namespace System.ServiceModel.Security
{
using System.Runtime;
using System.ServiceModel;
using System.ServiceModel.Channels;
using System.ServiceModel.Description;
using System.ServiceModel.Dispatcher;
using System.Xml;
// This is the base class for all token providers that negotiate an SCT from
// the target service.
abstract class NegotiationTokenProvider<T> : IssuanceTokenProviderBase<T>
where T : IssuanceTokenProviderState
{
IChannelFactory<IRequestChannel> rstChannelFactory;
bool requiresManualReplyAddressing;
BindingContext issuanceBindingContext;
MessageVersion messageVersion;
protected NegotiationTokenProvider()
: base()
{
}
public BindingContext IssuerBindingContext
{
get { return this.issuanceBindingContext; }
set
{
this.CommunicationObject.ThrowIfDisposedOrImmutable();
if (value == null)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull("value");
}
this.issuanceBindingContext = value.Clone();
}
}
public override XmlDictionaryString RequestSecurityTokenAction
{
get
{
return this.StandardsManager.TrustDriver.RequestSecurityTokenAction;
}
}
public override XmlDictionaryString RequestSecurityTokenResponseAction
{
get
{
return this.StandardsManager.TrustDriver.RequestSecurityTokenResponseAction;
}
}
protected override MessageVersion MessageVersion
{
get
{
return this.messageVersion;
}
}
protected override bool RequiresManualReplyAddressing
{
get
{
ThrowIfCreated();
return this.requiresManualReplyAddressing;
}
}
public override void OnClose(TimeSpan timeout)
{
TimeoutHelper timeoutHelper = new TimeoutHelper(timeout);
if (this.rstChannelFactory != null)
{
this.rstChannelFactory.Close(timeout);
this.rstChannelFactory = null;
}
base.OnClose(timeoutHelper.RemainingTime());
}
public override void OnAbort()
{
if (this.rstChannelFactory != null)
{
this.rstChannelFactory.Abort();
this.rstChannelFactory = null;
}
base.OnAbort();
}
public override void OnOpen(TimeSpan timeout)
{
if (this.IssuerBindingContext == null)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new InvalidOperationException(SR.GetString(SR.IssuerBuildContextNotSet, this.GetType())));
}
TimeoutHelper timeoutHelper = new TimeoutHelper(timeout);
this.SetupRstChannelFactory();
this.rstChannelFactory.Open(timeout);
base.OnOpen(timeoutHelper.RemainingTime());
}
protected abstract IChannelFactory<IRequestChannel> GetNegotiationChannelFactory(IChannelFactory<IRequestChannel> transportChannelFactory, ChannelBuilder channelBuilder);
void SetupRstChannelFactory()
{
IChannelFactory<IRequestChannel> innerChannelFactory = null;
ChannelBuilder channelBuilder = new ChannelBuilder(this.IssuerBindingContext.Clone(), true);
// if the underlying transport does not support request/reply, wrap it inside
// a service channel factory.
if (channelBuilder.CanBuildChannelFactory<IRequestChannel>())
{
innerChannelFactory = channelBuilder.BuildChannelFactory<IRequestChannel>();
this.requiresManualReplyAddressing = true;
}
else
{
ClientRuntime clientRuntime = new ClientRuntime("RequestSecurityTokenContract", NamingHelper.DefaultNamespace);
clientRuntime.ValidateMustUnderstand = false;
ServiceChannelFactory serviceChannelFactory = ServiceChannelFactory.BuildChannelFactory(channelBuilder, clientRuntime);
serviceChannelFactory.ClientRuntime.UseSynchronizationContext = false;
serviceChannelFactory.ClientRuntime.AddTransactionFlowProperties = false;
ClientOperation rstOperation = new ClientOperation(serviceChannelFactory.ClientRuntime, "RequestSecurityToken", this.RequestSecurityTokenAction.Value);
rstOperation.Formatter = MessageOperationFormatter.Instance;
serviceChannelFactory.ClientRuntime.Operations.Add(rstOperation);
if (this.IsMultiLegNegotiation)
{
ClientOperation rstrOperation = new ClientOperation(serviceChannelFactory.ClientRuntime, "RequestSecurityTokenResponse", this.RequestSecurityTokenResponseAction.Value);
rstrOperation.Formatter = MessageOperationFormatter.Instance;
serviceChannelFactory.ClientRuntime.Operations.Add(rstrOperation);
}
// service channel automatically adds reply headers
this.requiresManualReplyAddressing = false;
innerChannelFactory = new SecuritySessionSecurityTokenProvider.RequestChannelFactory(serviceChannelFactory);
}
this.rstChannelFactory = GetNegotiationChannelFactory(innerChannelFactory, channelBuilder);
this.messageVersion = channelBuilder.Binding.MessageVersion;
}
// negotiation message processing overrides
protected override bool WillInitializeChannelFactoriesCompleteSynchronously(EndpointAddress target)
{
return true;
}
protected override void InitializeChannelFactories(EndpointAddress target, TimeSpan timeout)
{
}
protected override IAsyncResult BeginInitializeChannelFactories(EndpointAddress target, TimeSpan timeout, AsyncCallback callback, object state)
{
return new CompletedAsyncResult(callback, state);
}
protected override void EndInitializeChannelFactories(IAsyncResult result)
{
CompletedAsyncResult.End(result);
}
protected override IRequestChannel CreateClientChannel(EndpointAddress target, Uri via)
{
if (via != null)
{
return this.rstChannelFactory.CreateChannel(target, via);
}
else
{
return this.rstChannelFactory.CreateChannel(target);
}
}
}
}
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