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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.IdentityModel.Policy;
using System.IdentityModel.Selectors;
using System.IdentityModel.Tokens;
using System.Runtime;
using System.ServiceModel;
using System.ServiceModel.Channels;
using System.ServiceModel.Description;
using System.ServiceModel.Security.Tokens;
sealed class AsymmetricSecurityProtocol : MessageSecurityProtocol
{
SecurityTokenAuthenticator initiatorAsymmetricTokenAuthenticator;
SecurityTokenProvider initiatorAsymmetricTokenProvider;
SecurityTokenProvider initiatorCryptoTokenProvider;
public AsymmetricSecurityProtocol(AsymmetricSecurityProtocolFactory factory,
EndpointAddress target, Uri via)
: base(factory, target, via)
{
}
protected override bool DoAutomaticEncryptionMatch
{
get { return false; }
}
AsymmetricSecurityProtocolFactory Factory
{
get { return (AsymmetricSecurityProtocolFactory)base.MessageSecurityProtocolFactory; }
}
public SecurityTokenProvider InitiatorCryptoTokenProvider
{
get
{
this.CommunicationObject.ThrowIfNotOpened();
return this.initiatorCryptoTokenProvider;
}
}
public SecurityTokenAuthenticator InitiatorAsymmetricTokenAuthenticator
{
get
{
this.CommunicationObject.ThrowIfNotOpened();
return this.initiatorAsymmetricTokenAuthenticator;
}
}
public SecurityTokenProvider InitiatorAsymmetricTokenProvider
{
get
{
this.CommunicationObject.ThrowIfNotOpened();
return this.initiatorAsymmetricTokenProvider;
}
}
public override void OnOpen(TimeSpan timeout)
{
TimeoutHelper timeoutHelper = new TimeoutHelper(timeout);
base.OnOpen(timeoutHelper.RemainingTime());
if (this.Factory.ActAsInitiator)
{
if (this.Factory.ApplyIntegrity)
{
InitiatorServiceModelSecurityTokenRequirement requirement = CreateInitiatorSecurityTokenRequirement();
this.Factory.CryptoTokenParameters.InitializeSecurityTokenRequirement(requirement);
requirement.KeyUsage = SecurityKeyUsage.Signature;
requirement.Properties[ServiceModelSecurityTokenRequirement.MessageDirectionProperty] = MessageDirection.Output;
this.initiatorCryptoTokenProvider = this.Factory.SecurityTokenManager.CreateSecurityTokenProvider(requirement);
SecurityUtils.OpenTokenProviderIfRequired(this.initiatorCryptoTokenProvider, timeoutHelper.RemainingTime());
}
if (this.Factory.RequireIntegrity || this.Factory.ApplyConfidentiality)
{
InitiatorServiceModelSecurityTokenRequirement providerRequirement = CreateInitiatorSecurityTokenRequirement();
this.Factory.AsymmetricTokenParameters.InitializeSecurityTokenRequirement(providerRequirement);
providerRequirement.KeyUsage = SecurityKeyUsage.Exchange;
providerRequirement.Properties[ServiceModelSecurityTokenRequirement.MessageDirectionProperty] = (this.Factory.ApplyConfidentiality) ? MessageDirection.Output : MessageDirection.Input;
this.initiatorAsymmetricTokenProvider = this.Factory.SecurityTokenManager.CreateSecurityTokenProvider(providerRequirement);
SecurityUtils.OpenTokenProviderIfRequired(this.initiatorAsymmetricTokenProvider, timeoutHelper.RemainingTime());
InitiatorServiceModelSecurityTokenRequirement authenticatorRequirement = CreateInitiatorSecurityTokenRequirement();
this.Factory.AsymmetricTokenParameters.InitializeSecurityTokenRequirement(authenticatorRequirement);
authenticatorRequirement.IsOutOfBandToken = !this.Factory.AllowSerializedSigningTokenOnReply;
authenticatorRequirement.KeyUsage = SecurityKeyUsage.Exchange;
authenticatorRequirement.Properties[ServiceModelSecurityTokenRequirement.MessageDirectionProperty] = (this.Factory.ApplyConfidentiality) ? MessageDirection.Output : MessageDirection.Input;
// Create authenticator (we dont support out of band resolvers on the client side
SecurityTokenResolver outOfBandTokenResolver;
this.initiatorAsymmetricTokenAuthenticator = this.Factory.SecurityTokenManager.CreateSecurityTokenAuthenticator(authenticatorRequirement, out outOfBandTokenResolver);
SecurityUtils.OpenTokenAuthenticatorIfRequired(this.initiatorAsymmetricTokenAuthenticator, timeoutHelper.RemainingTime());
}
}
}
public override void OnAbort()
{
if (this.Factory.ActAsInitiator)
{
if (this.initiatorCryptoTokenProvider != null)
{
SecurityUtils.AbortTokenProviderIfRequired(this.initiatorCryptoTokenProvider);
}
if (this.initiatorAsymmetricTokenProvider != null)
{
SecurityUtils.AbortTokenProviderIfRequired(this.initiatorAsymmetricTokenProvider);
}
if (this.initiatorAsymmetricTokenAuthenticator != null)
{
SecurityUtils.AbortTokenAuthenticatorIfRequired(this.initiatorAsymmetricTokenAuthenticator);
}
}
base.OnAbort();
}
public override void OnClose(TimeSpan timeout)
{
TimeoutHelper timeoutHelper = new TimeoutHelper(timeout);
if (this.Factory.ActAsInitiator)
{
if (this.initiatorCryptoTokenProvider != null)
{
SecurityUtils.CloseTokenProviderIfRequired(this.initiatorCryptoTokenProvider, timeoutHelper.RemainingTime());
}
if (this.initiatorAsymmetricTokenProvider != null)
{
SecurityUtils.CloseTokenProviderIfRequired(this.initiatorAsymmetricTokenProvider, timeoutHelper.RemainingTime());
}
if (this.initiatorAsymmetricTokenAuthenticator != null)
{
SecurityUtils.CloseTokenAuthenticatorIfRequired(this.initiatorAsymmetricTokenAuthenticator, timeoutHelper.RemainingTime());
}
}
base.OnClose(timeoutHelper.RemainingTime());
}
protected override IAsyncResult BeginSecureOutgoingMessageCore(Message message, TimeSpan timeout, SecurityProtocolCorrelationState correlationState, AsyncCallback callback, object state)
{
SecurityToken encryptingToken;
SecurityToken signingToken;
SecurityProtocolCorrelationState newCorrelationState;
IList<SupportingTokenSpecification> supportingTokens;
TimeoutHelper timeoutHelper = new TimeoutHelper(timeout);
if (TryGetTokenSynchronouslyForOutgoingSecurity(message, correlationState, false, timeoutHelper.RemainingTime(), out encryptingToken, out signingToken, out supportingTokens, out newCorrelationState))
{
SetUpDelayedSecurityExecution(ref message, encryptingToken, signingToken, supportingTokens, GetSignatureConfirmationCorrelationState(correlationState, newCorrelationState));
return new CompletedAsyncResult<Message, SecurityProtocolCorrelationState>(message, newCorrelationState, callback, state);
}
else
{
if (this.Factory.ActAsInitiator == false)
{
Fx.Assert("Unexpected code path for server security application");
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new InvalidOperationException(SR.GetString(SR.SendingOutgoingmessageOnRecipient)));
}
AsymmetricSecurityProtocolFactory factory = this.Factory;
SecurityTokenProvider encProvider = factory.ApplyConfidentiality ? this.initiatorAsymmetricTokenProvider : null;
SecurityTokenProvider sigProvider = factory.ApplyIntegrity ? this.initiatorCryptoTokenProvider : null;
return new SecureOutgoingMessageAsyncResult(message, this,
encProvider, sigProvider, factory.ApplyConfidentiality, this.initiatorAsymmetricTokenAuthenticator, correlationState, timeoutHelper.RemainingTime(), callback, state);
}
}
protected override void EndSecureOutgoingMessageCore(IAsyncResult result, out Message message, out SecurityProtocolCorrelationState newCorrelationState)
{
if (result is CompletedAsyncResult<Message, SecurityProtocolCorrelationState>)
{
message = CompletedAsyncResult<Message, SecurityProtocolCorrelationState>.End(result, out newCorrelationState);
}
else
{
message = SecureOutgoingMessageAsyncResult.End(result, out newCorrelationState);
}
}
protected override SecurityProtocolCorrelationState SecureOutgoingMessageCore(ref Message message, TimeSpan timeout, SecurityProtocolCorrelationState correlationState)
{
SecurityToken encryptingToken;
SecurityToken signingToken;
SecurityProtocolCorrelationState newCorrelationState;
IList<SupportingTokenSpecification> supportingTokens;
TryGetTokenSynchronouslyForOutgoingSecurity(message, correlationState, true, timeout, out encryptingToken, out signingToken, out supportingTokens, out newCorrelationState);
SetUpDelayedSecurityExecution(ref message, encryptingToken, signingToken, supportingTokens, GetSignatureConfirmationCorrelationState(correlationState, newCorrelationState));
return newCorrelationState;
}
void SetUpDelayedSecurityExecution(ref Message message, SecurityToken encryptingToken, SecurityToken signingToken,
IList<SupportingTokenSpecification> supportingTokens, SecurityProtocolCorrelationState correlationState)
{
AsymmetricSecurityProtocolFactory factory = this.Factory;
string actor = string.Empty;
SendSecurityHeader securityHeader = ConfigureSendSecurityHeader(message, actor, supportingTokens, correlationState);
SecurityTokenParameters signingTokenParameters = (this.Factory.ActAsInitiator) ? this.Factory.CryptoTokenParameters : this.Factory.AsymmetricTokenParameters;
SecurityTokenParameters encryptionTokenParameters = (this.Factory.ActAsInitiator) ? this.Factory.AsymmetricTokenParameters : this.Factory.CryptoTokenParameters;
if (this.Factory.ApplyIntegrity || securityHeader.HasSignedTokens)
{
if (!this.Factory.ApplyIntegrity)
{
securityHeader.SignatureParts = MessagePartSpecification.NoParts;
}
securityHeader.SetSigningToken(signingToken, signingTokenParameters);
}
if (Factory.ApplyConfidentiality || securityHeader.HasEncryptedTokens)
{
if (!this.Factory.ApplyConfidentiality)
{
securityHeader.EncryptionParts = MessagePartSpecification.NoParts;
}
securityHeader.SetEncryptionToken(encryptingToken, encryptionTokenParameters);
}
message = securityHeader.SetupExecution();
}
void AttachRecipientSecurityProperty(Message message, SecurityToken initiatorToken, SecurityToken recipientToken, IList<SecurityToken> basicTokens, IList<SecurityToken> endorsingTokens,
IList<SecurityToken> signedEndorsingTokens, IList<SecurityToken> signedTokens, Dictionary<SecurityToken, ReadOnlyCollection<IAuthorizationPolicy>> tokenPoliciesMapping)
{
SecurityMessageProperty security = SecurityMessageProperty.GetOrCreate(message);
security.InitiatorToken = (initiatorToken != null) ? new SecurityTokenSpecification(initiatorToken, tokenPoliciesMapping[initiatorToken]) : null;
security.RecipientToken = (recipientToken != null) ? new SecurityTokenSpecification(recipientToken, EmptyReadOnlyCollection<IAuthorizationPolicy>.Instance) : null;
AddSupportingTokenSpecification(security, basicTokens, endorsingTokens, signedEndorsingTokens, signedTokens, tokenPoliciesMapping);
security.ServiceSecurityContext = new ServiceSecurityContext(security.GetInitiatorTokenAuthorizationPolicies());
}
void DoIdentityCheckAndAttachInitiatorSecurityProperty(Message message, SecurityToken initiatorToken, SecurityToken recipientToken, ReadOnlyCollection<IAuthorizationPolicy> recipientTokenPolicies)
{
AuthorizationContext recipientAuthorizationContext = base.EnsureIncomingIdentity(message, recipientToken, recipientTokenPolicies);
SecurityMessageProperty security = SecurityMessageProperty.GetOrCreate(message);
security.InitiatorToken = (initiatorToken != null) ? new SecurityTokenSpecification(initiatorToken, EmptyReadOnlyCollection<IAuthorizationPolicy>.Instance) : null;
security.RecipientToken = new SecurityTokenSpecification(recipientToken, recipientTokenPolicies);
security.ServiceSecurityContext = new ServiceSecurityContext(recipientAuthorizationContext, recipientTokenPolicies ?? EmptyReadOnlyCollection<IAuthorizationPolicy>.Instance);
}
protected override SecurityProtocolCorrelationState VerifyIncomingMessageCore(ref Message message, string actor, TimeSpan timeout, SecurityProtocolCorrelationState[] correlationStates)
{
AsymmetricSecurityProtocolFactory factory = this.Factory;
IList<SupportingTokenAuthenticatorSpecification> supportingAuthenticators;
TimeoutHelper timeoutHelper = new TimeoutHelper(timeout);
ReceiveSecurityHeader securityHeader = ConfigureReceiveSecurityHeader(message, string.Empty, correlationStates, out supportingAuthenticators);
SecurityToken requiredReplySigningToken = null;
if (factory.ActAsInitiator)
{
SecurityToken encryptionToken = null;
SecurityToken receiverToken = null;
if (factory.RequireIntegrity)
{
receiverToken = GetToken(this.initiatorAsymmetricTokenProvider, null, timeoutHelper.RemainingTime());
requiredReplySigningToken = receiverToken;
}
if (factory.RequireConfidentiality)
{
encryptionToken = GetCorrelationToken(correlationStates);
if (!SecurityUtils.HasSymmetricSecurityKey(encryptionToken))
{
securityHeader.WrappedKeySecurityTokenAuthenticator = this.Factory.WrappedKeySecurityTokenAuthenticator;
}
}
SecurityTokenAuthenticator primaryTokenAuthenticator;
if (factory.AllowSerializedSigningTokenOnReply)
{
primaryTokenAuthenticator = this.initiatorAsymmetricTokenAuthenticator;
requiredReplySigningToken = null;
}
else
{
primaryTokenAuthenticator = null;
}
securityHeader.ConfigureAsymmetricBindingClientReceiveHeader(receiverToken,
factory.AsymmetricTokenParameters, encryptionToken, factory.CryptoTokenParameters,
primaryTokenAuthenticator);
}
else
{
SecurityToken wrappingToken;
if (this.Factory.RecipientAsymmetricTokenProvider != null && this.Factory.RequireConfidentiality)
{
wrappingToken = GetToken(factory.RecipientAsymmetricTokenProvider, null, timeoutHelper.RemainingTime());
}
else
{
wrappingToken = null;
}
securityHeader.ConfigureAsymmetricBindingServerReceiveHeader(this.Factory.RecipientCryptoTokenAuthenticator,
this.Factory.CryptoTokenParameters, wrappingToken, this.Factory.AsymmetricTokenParameters, supportingAuthenticators);
securityHeader.WrappedKeySecurityTokenAuthenticator = this.Factory.WrappedKeySecurityTokenAuthenticator;
securityHeader.ConfigureOutOfBandTokenResolver(MergeOutOfBandResolvers(supportingAuthenticators, this.Factory.RecipientOutOfBandTokenResolverList));
}
ProcessSecurityHeader(securityHeader, ref message, requiredReplySigningToken, timeoutHelper.RemainingTime(), correlationStates);
SecurityToken signingToken = securityHeader.SignatureToken;
SecurityToken encryptingToken = securityHeader.EncryptionToken;
if (factory.RequireIntegrity)
{
if (factory.ActAsInitiator)
{
ReadOnlyCollection<IAuthorizationPolicy> signingTokenPolicies = this.initiatorAsymmetricTokenAuthenticator.ValidateToken(signingToken);
EnsureNonWrappedToken(signingToken, message);
DoIdentityCheckAndAttachInitiatorSecurityProperty(message, encryptingToken, signingToken, signingTokenPolicies);
}
else
{
EnsureNonWrappedToken(signingToken, message);
AttachRecipientSecurityProperty(message, signingToken, encryptingToken, securityHeader.BasicSupportingTokens, securityHeader.EndorsingSupportingTokens, securityHeader.SignedEndorsingSupportingTokens,
securityHeader.SignedSupportingTokens, securityHeader.SecurityTokenAuthorizationPoliciesMapping);
}
}
return GetCorrelationState(signingToken, securityHeader);
}
bool TryGetTokenSynchronouslyForOutgoingSecurity(Message message, SecurityProtocolCorrelationState correlationState, bool isBlockingCall, TimeSpan timeout,
out SecurityToken encryptingToken, out SecurityToken signingToken, out IList<SupportingTokenSpecification> supportingTokens, out SecurityProtocolCorrelationState newCorrelationState)
{
AsymmetricSecurityProtocolFactory factory = this.Factory;
encryptingToken = null;
signingToken = null;
newCorrelationState = null;
supportingTokens = null;
TimeoutHelper timeoutHelper = new TimeoutHelper(timeout);
if (factory.ActAsInitiator)
{
if (!isBlockingCall || !TryGetSupportingTokens(this.Factory, this.Target, this.Via, message, timeoutHelper.RemainingTime(), isBlockingCall, out supportingTokens))
{
return false;
}
if (factory.ApplyConfidentiality)
{
encryptingToken = GetTokenAndEnsureOutgoingIdentity(this.initiatorAsymmetricTokenProvider, true, timeoutHelper.RemainingTime(), this.initiatorAsymmetricTokenAuthenticator);
}
if (factory.ApplyIntegrity)
{
signingToken = GetToken(this.initiatorCryptoTokenProvider, this.Target, timeoutHelper.RemainingTime());
newCorrelationState = GetCorrelationState(signingToken);
}
}
else
{
if (factory.ApplyConfidentiality)
{
encryptingToken = GetCorrelationToken(correlationState);
}
if (factory.ApplyIntegrity)
{
signingToken = GetToken(factory.RecipientAsymmetricTokenProvider, null, timeoutHelper.RemainingTime());
}
}
return true;
}
sealed class SecureOutgoingMessageAsyncResult : GetTwoTokensAndSetUpSecurityAsyncResult
{
public SecureOutgoingMessageAsyncResult(Message m, AsymmetricSecurityProtocol binding,
SecurityTokenProvider primaryProvider, SecurityTokenProvider secondaryProvider, bool doIdentityChecks, SecurityTokenAuthenticator identityCheckAuthenticator,
SecurityProtocolCorrelationState correlationState, TimeSpan timeout, AsyncCallback callback, object state)
: base(m, binding, primaryProvider, secondaryProvider, doIdentityChecks, identityCheckAuthenticator, correlationState, timeout, callback, state)
{
Start();
}
protected override void OnBothGetTokenCallsDone(ref Message message, SecurityToken primaryToken, SecurityToken secondaryToken, TimeSpan timeout)
{
AsymmetricSecurityProtocol binding = (AsymmetricSecurityProtocol)this.Binding;
if (secondaryToken != null)
this.SetCorrelationToken(secondaryToken);
binding.SetUpDelayedSecurityExecution(ref message, primaryToken, secondaryToken, this.SupportingTokens, binding.GetSignatureConfirmationCorrelationState(OldCorrelationState, NewCorrelationState));
}
}
}
}
|
