SslStreamSecurityBindingElement.cs source code in C# .NET

                        Code:
                         / WCF / WCF / 3.5.30729.1 / untmp / Orcas / SP / ndp / cdf / src / WCF / ServiceModel / System / ServiceModel / Channels / SslStreamSecurityBindingElement.cs / 1 / SslStreamSecurityBindingElement.cs
                        
                        
                            //------------------------------------------------------------------------------ 
// Copyright (c) Microsoft Corporation.  All rights reserved.
//-----------------------------------------------------------------------------
namespace System.ServiceModel.Channels
{ 
    using System.Collections.Generic;
    using System.ServiceModel.Description; 
    using System.Net.Security; 
    using System.ServiceModel;
    using System.ServiceModel.Security; 

    using System.ServiceModel.Security.Tokens;
    using System.Xml;
 
    public class SslStreamSecurityBindingElement : StreamUpgradeBindingElement, ITransportTokenAssertionProvider, IPolicyExportExtension
    { 
        IdentityVerifier identityVerifier; 
        bool requireClientCertificate;
 
        public SslStreamSecurityBindingElement()
        {
            this.requireClientCertificate = TransportDefaults.RequireClientCertificate;
        } 

        protected SslStreamSecurityBindingElement(SslStreamSecurityBindingElement elementToBeCloned) 
            : base(elementToBeCloned) 
        {
            this.identityVerifier = elementToBeCloned.identityVerifier; 
            this.requireClientCertificate = elementToBeCloned.requireClientCertificate;
        }

        public IdentityVerifier IdentityVerifier 
        {
            get 
            { 
                if (this.identityVerifier == null)
                { 
                    this.identityVerifier = IdentityVerifier.CreateDefault();
                }

                return this.identityVerifier; 
            }
            set 
            { 
                if (value == null)
                { 
                    throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull("value");
                }

                this.identityVerifier = value; 
            }
        } 
 
        public bool RequireClientCertificate
        { 
            get
            {
                return this.requireClientCertificate;
            } 
            set
            { 
                this.requireClientCertificate = value; 
            }
        } 

        public override IChannelFactory BuildChannelFactory(BindingContext context)
        {
            if (context == null) 
            {
                throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull("context"); 
            } 

#pragma warning suppress 56506 // [....], BindingContext.BindingParameters cannot be null 
            context.BindingParameters.Add(this);
            return context.BuildInnerChannelFactory();
        }
 
        public override bool CanBuildChannelFactory(BindingContext context)
        { 
            if (context == null) 
            {
                throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull("context"); 
            }

#pragma warning suppress 56506 // [....], BindingContext.BindingParameters cannot be null
            context.BindingParameters.Add(this); 
            return context.CanBuildInnerChannelFactory();
        } 
 
        public override IChannelListener BuildChannelListener(BindingContext context)
        { 
            if (context == null)
            {
                throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull("context");
            } 

#pragma warning suppress 56506 // [....], BindingContext.BindingParameters cannot be null 
            context.BindingParameters.Add(this); 
            return context.BuildInnerChannelListener();
        } 

        public override bool CanBuildChannelListener(BindingContext context)
        {
            if (context == null) 
            {
                throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull("context"); 
            } 

#pragma warning suppress 56506 // [....], BindingContext.BindingParameters cannot be null 
            context.BindingParameters.Add(this);
            return context.CanBuildInnerChannelListener();
        }
 
        public override BindingElement Clone()
        { 
            return new SslStreamSecurityBindingElement(this); 
        }
 
        public override T GetProperty(BindingContext context)
        {
            if (context == null)
            { 
                throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull("context");
            } 
            if (typeof(T) == typeof(ISecurityCapabilities)) 
            {
                return (T)(object)new SecurityCapabilities(this.RequireClientCertificate, true, this.RequireClientCertificate, 
                    ProtectionLevel.EncryptAndSign, ProtectionLevel.EncryptAndSign);
            }
            else if (typeof(T) == typeof(IdentityVerifier))
            { 
                return (T)(object)this.IdentityVerifier;
            } 
            else 
            {
                return context.GetInnerProperty(); 
            }
        }

        public override StreamUpgradeProvider BuildClientStreamUpgradeProvider(BindingContext context) 
        {
            return SslStreamSecurityUpgradeProvider.CreateClientProvider(this, context); 
        } 

        public override StreamUpgradeProvider BuildServerStreamUpgradeProvider(BindingContext context) 
        {
            return SslStreamSecurityUpgradeProvider.CreateServerProvider(this, context);
        }
 

        internal static void ImportPolicy(MetadataImporter importer, PolicyConversionContext policyContext) 
        { 
            XmlElement assertion = PolicyConversionContext.FindAssertion(policyContext.GetBindingAssertions(),
                TransportPolicyConstants.SslTransportSecurityName, TransportPolicyConstants.DotNetFramingNamespace, true); 

            if (assertion != null)
            {
                SslStreamSecurityBindingElement sslBindingElement = new SslStreamSecurityBindingElement(); 

                XmlReader reader = new XmlNodeReader(assertion); 
                reader.ReadStartElement(); 
                sslBindingElement.RequireClientCertificate = reader.IsStartElement(
                    TransportPolicyConstants.RequireClientCertificateName, 
                    TransportPolicyConstants.DotNetFramingNamespace);
                if (sslBindingElement.RequireClientCertificate)
                {
                    reader.ReadElementString(); 
                }
 
                policyContext.BindingElements.Add(sslBindingElement); 
            }
        } 

        #region ITransportTokenAssertionProvider Members

        public XmlElement GetTransportTokenAssertion() 
        {
            XmlDocument document = new XmlDocument(); 
            XmlElement assertion = 
                document.CreateElement(TransportPolicyConstants.DotNetFramingPrefix,
                TransportPolicyConstants.SslTransportSecurityName, 
                TransportPolicyConstants.DotNetFramingNamespace);
            if (this.requireClientCertificate)
            {
                assertion.AppendChild(document.CreateElement(TransportPolicyConstants.DotNetFramingPrefix, 
                    TransportPolicyConstants.RequireClientCertificateName,
                    TransportPolicyConstants.DotNetFramingNamespace)); 
            } 
            return assertion;
        } 

        #endregion

        void IPolicyExportExtension.ExportPolicy(MetadataExporter exporter, PolicyConversionContext context) 
        {
            if (exporter == null) 
            { 
                throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull("exporter");
            } 
            if (context == null)
            {
                throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull("context");
            } 

            SecurityBindingElement.ExportPolicy(exporter, context); 
        } 

        internal override bool IsMatch(BindingElement b) 
        {
            if (b == null)
            {
                return false; 
            }
            SslStreamSecurityBindingElement ssl = b as SslStreamSecurityBindingElement; 
            if (ssl == null) 
            {
                return false; 
            }

            return this.requireClientCertificate == ssl.requireClientCertificate;
        } 
    }
} 

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
// Copyright (c) Microsoft Corporation. All rights reserved.
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SslStreamSecurityBindingElement.cs source code in C# .NET

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