CustomTokenProvider.cs source code in C# .NET

                        Code:
                         / WCF / WCF / 3.5.30729.1 / untmp / Orcas / SP / ndp / cdf / src / WCF / infocard / Service / managed / Microsoft / InfoCards / CustomTokenProvider.cs / 1 / CustomTokenProvider.cs
                        
                        
                            //------------------------------------------------------------------------------ 
// Copyright (c) Microsoft Corporation.  All rights reserved.
//-----------------------------------------------------------------------------
//
// Presharp uses the c# pragma mechanism to supress its warnings. 
// These are not recognised by the base compiler so we need to explictly
// disable the following warnings. See http://winweb/cse/Tools/PREsharp/userguide/default.asp 
// for details. 
//
#pragma warning disable 1634, 1691      // unknown message, unknown pragma 

namespace Microsoft.InfoCards
{
    using System; 
    using System.IdentityModel.Selectors;
    using System.IdentityModel.Tokens; 
    using System.ServiceModel; 
    using System.ServiceModel.Security;
    using System.ServiceModel.Security.Tokens; 
    using System.Runtime.InteropServices;
    using System.Security.Cryptography;
    using System.IdentityModel;
    using System.Security.Cryptography.Xml; 

    using IDT = Microsoft.InfoCards.Diagnostics.InfoCardTrace; 
    using System.Collections.ObjectModel; 
    using System.Collections.Generic;
 
    //
    // This class is used to provide a custom token provider for self issued card authentication
    //
    internal class CustomTokenProvider : SecurityTokenProvider, IDisposable 
    {
        InfoCardPolicy m_policy; 
        InfoCard m_card; 
        IssuedSecurityTokenParameters m_parameters;
        TokenDescriptor m_token; 
        EndpointAddress m_target;
        SelfIssuedSamlTokenFactory m_tokenFactory;
        bool m_isSelfIssuedCreds;
        ProtocolProfile m_protocolProfile; 

        SelfIssuedAuthProofToken m_proofToken; 
 
        public CustomTokenProvider( IssuedSecurityTokenParameters parameters, InfoCard card, EndpointAddress target, bool isSelfIssuedCreds, ProtocolProfile profile )
        { 
            m_isSelfIssuedCreds = isSelfIssuedCreds;
            m_card = card;
            m_parameters = parameters;
            m_target = target; 
            m_protocolProfile = profile;
            ValidatePolicy(); 
            m_tokenFactory = new SelfIssuedSamlTokenFactory(); 
        }
 
        public void Dispose()
        {
            //
            // We must dispose this handle explicitly. 
            //
            if ( null != m_token ) 
            { 
                m_token.Dispose();
                m_token = null; 
            }

            //
            // We must dispose this proof token explicitly. 
            //
            if ( null != m_proofToken ) 
            { 
                m_proofToken.Dispose();
                m_proofToken = null; 
            }
        }

        void ValidatePolicy() 
        {
            try 
            { 
                m_policy = PolicyFactory.CreatePolicyForCustomTokenProvider( m_target, m_parameters, m_protocolProfile );
 
                //
                // For customTokenProvider, the party we're encrypting the token to, an IP/STS, is also our relying party
                // for the self-issued or X509 token. So ImmediateTokenRecipient == Recipient in this case.
                // Manually set the recipient cert to allow us to create the RPID, OrgId etc. subsequently 
                // when Validate is called.
                // 
 
                m_policy.SetRecipientInfo( m_policy.ImmediateTokenRecipient, null, 0 );
 

                //
                // The custom token provider is also used in X509 creds code path
                // so need to have m_isSelfIssuedCreds to distinguish the two. 
                //
                if ( m_isSelfIssuedCreds ) 
                { 
                    m_policy.ThrowIfNonPpidClaimsPresent();
                } 
                m_policy.Validate();
            }
            catch ( Exception e )
            { 
                if ( IDT.IsFatal( e ) )
                { 
                    throw; 
                }
 
                //
                // We need to throw here.
                //  We do not want any other providers to
                //  to be able to handle this request. 
                //
                IDT.TraceDebug( "Falied to read IP STS policy: {0}", e.ToString() ); 
                throw IDT.ThrowHelperError( new TrustExchangeException( SR.GetString( SR.FailedReadingIPSTSPolicy ), e ) ); 
            }
 
        }

        //
        // Summary 
        //   Retrieves a token from the system
        // 
        // Parameters 
        //  address - The address of the recipient
        //  timeout - The time span till the call times out 
        //
        // Returns
        //  The security token.
        // 
        protected override SecurityToken GetTokenCore( TimeSpan timeout )
        { 
            // 
            // Retrieve a connection for the card (may be need to fetch ledger entries)
            // 
            StoreConnection connection = StoreConnection.GetConnection();
            m_card.Connection = connection;
            try
            { 
                m_token = m_tokenFactory.CreateToken( m_card, null, m_policy, false );
 
                if ( null == m_token.SymmetricProof ) 
                {
                    // 
                    // Private because we need the private key for proof of possesion.
                    // The regular self-issued case does not need the private key
                    // in the proof crypto because we hand out the CryptoSession handle
                    // to do the proof of possession for us. 
                    //
                    m_proofToken = new SelfIssuedAuthProofToken( 
                            m_card.GetPrivateCryptography( m_policy.Recipient.GetIdentifier() ), 
                            m_token.ExpirationTime );
                } 
                else
                {
                    m_proofToken = new SelfIssuedAuthProofToken(
                             new InMemorySymmetricSecurityKey( m_token.SymmetricProof.Key ), 
                             m_token.ExpirationTime );
                } 
 

                return new GenericXmlSecurityToken( 
                    m_token.ProtectedToken,
                    m_proofToken,
                    m_token.EffectiveTime,
                    m_token.ExpirationTime, 
                    new SamlAssertionKeyIdentifierClause( m_token.TokenId ),
                    null, 
                    null ); 
            }
            finally 
            {
                connection.Close();
                m_card.Connection = null;
            } 
        }
    } 
 

} 

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

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