SecurityTokenProvider.cs source code in C# .NET

                        Code:
                         / 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / cdf / src / WCF / IdentityModel / System / IdentityModel / Selectors / SecurityTokenProvider.cs / 1305376 / SecurityTokenProvider.cs
                        
                        
                            //------------------------------------------------------------ 
// Copyright (c) Microsoft Corporation.  All rights reserved.
//-----------------------------------------------------------

namespace System.IdentityModel.Selectors 
{
    using System.IdentityModel.Diagnostics; 
    using System.IdentityModel.Tokens; 
    using System.Runtime;
    using System.Threading; 

    public abstract class SecurityTokenProvider
    {
        protected SecurityTokenProvider() { } 

        public virtual bool SupportsTokenRenewal 
        { 
            get { return false; }
        } 

        public virtual bool SupportsTokenCancellation
        {
            get { return false; } 
        }
 
        public SecurityToken GetToken(TimeSpan timeout) 
        {
            SecurityToken token = this.GetTokenCore(timeout); 
            if (token == null)
            {
                throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new SecurityTokenException(SR.GetString(SR.TokenProviderUnableToGetToken, this)));
            } 
            return token;
        } 
 
        public IAsyncResult BeginGetToken(TimeSpan timeout, AsyncCallback callback, object state)
        { 
            return this.BeginGetTokenCore(timeout, callback, state);
        }

        public SecurityToken EndGetToken(IAsyncResult result) 
        {
            if (result == null) 
            { 
                throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull("result");
            } 
            SecurityToken token = this.EndGetTokenCore(result);
            if (token == null)
            {
                throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new SecurityTokenException(SR.GetString(SR.TokenProviderUnableToGetToken, this))); 
            }
            return token; 
        } 

        public SecurityToken RenewToken(TimeSpan timeout, SecurityToken tokenToBeRenewed) 
        {
            if (tokenToBeRenewed == null)
            {
                throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull("tokenToBeRenewed"); 
            }
            SecurityToken token = this.RenewTokenCore(timeout, tokenToBeRenewed); 
            if (token == null) 
            {
                throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new SecurityTokenException(SR.GetString(SR.TokenProviderUnableToRenewToken, this))); 
            }
            return token;
        }
 
        public IAsyncResult BeginRenewToken(TimeSpan timeout, SecurityToken tokenToBeRenewed, AsyncCallback callback, object state)
        { 
            if (tokenToBeRenewed == null) 
            {
                throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull("tokenToBeRenewed"); 
            }
            return this.BeginRenewTokenCore(timeout, tokenToBeRenewed, callback, state);
        }
 
        public SecurityToken EndRenewToken(IAsyncResult result)
        { 
            if (result == null) 
            {
                throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull("result"); 
            }
            SecurityToken token = this.EndRenewTokenCore(result);
            if (token == null)
            { 
                throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new SecurityTokenException(SR.GetString(SR.TokenProviderUnableToRenewToken, this)));
            } 
            return token; 
        }
 
        public void CancelToken(TimeSpan timeout, SecurityToken token)
        {
            if (token == null)
            { 
                throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull("token");
            } 
            this.CancelTokenCore(timeout, token); 
        }
 
        public IAsyncResult BeginCancelToken(TimeSpan timeout, SecurityToken token, AsyncCallback callback, object state)
        {
            if (token == null)
            { 
                throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull("token");
            } 
            return this.BeginCancelTokenCore(timeout, token, callback, state); 
        }
 
        public void EndCancelToken(IAsyncResult result)
        {
            if (result == null)
            { 
                throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull("result");
            } 
            this.EndCancelTokenCore(result); 
        }
 
        // protected methods
        protected abstract SecurityToken GetTokenCore(TimeSpan timeout);

        protected virtual SecurityToken RenewTokenCore(TimeSpan timeout, SecurityToken tokenToBeRenewed) 
        {
            throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new NotSupportedException(SR.GetString(SR.TokenRenewalNotSupported, this))); 
        } 

        protected virtual void CancelTokenCore(TimeSpan timeout, SecurityToken token) 
        {
            throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new NotSupportedException(SR.GetString(SR.TokenCancellationNotSupported, this)));
        }
 
        protected virtual IAsyncResult BeginGetTokenCore(TimeSpan timeout, AsyncCallback callback, object state)
        { 
            SecurityToken token = this.GetToken(timeout); 
            return new SecurityTokenAsyncResult(token, callback, state);
        } 

        protected virtual SecurityToken EndGetTokenCore(IAsyncResult result)
        {
            return SecurityTokenAsyncResult.End(result); 
        }
 
        protected virtual IAsyncResult BeginRenewTokenCore(TimeSpan timeout, SecurityToken tokenToBeRenewed, AsyncCallback callback, object state) 
        {
            SecurityToken token = this.RenewTokenCore(timeout, tokenToBeRenewed); 
            return new SecurityTokenAsyncResult(token, callback, state);
        }

        protected virtual SecurityToken EndRenewTokenCore(IAsyncResult result) 
        {
            return SecurityTokenAsyncResult.End(result); 
        } 

        protected virtual IAsyncResult BeginCancelTokenCore(TimeSpan timeout, SecurityToken token, AsyncCallback callback, object state) 
        {
            this.CancelToken(timeout, token);
            return new SecurityTokenAsyncResult(null, callback, state);
        } 

        protected virtual void EndCancelTokenCore(IAsyncResult result) 
        { 
            SecurityTokenAsyncResult.End(result);
        } 

        internal protected class SecurityTokenAsyncResult : IAsyncResult
        {
            SecurityToken token; 
            object state;
            ManualResetEvent manualResetEvent; 
            object thisLock = new object(); 

            public SecurityTokenAsyncResult(SecurityToken token, AsyncCallback callback, object state) 
            {
                this.token = token;
                this.state = state;
 
                if (callback != null)
                { 
                    try 
                    {
                        callback(this); 
                    }
#pragma warning suppress 56500
                    catch (Exception e)
                    { 
                        if (Fx.IsFatal(e))
                            throw; 
 
                        throw DiagnosticUtility.ExceptionUtility.ThrowHelperCallback(SR.GetString(SR.AsyncCallbackException), e);
                    } 
                }
            }

            public object AsyncState 
            {
                get { return this.state; } 
            } 

            public WaitHandle AsyncWaitHandle 
            {
                get
                {
                    if (this.manualResetEvent != null) 
                    {
                        return this.manualResetEvent; 
                    } 

                    lock (thisLock) 
                    {
                        if (this.manualResetEvent == null)
                        {
                            this.manualResetEvent = new ManualResetEvent(true); 
                        }
                    } 
                    return this.manualResetEvent; 
                }
            } 

            public bool CompletedSynchronously
            {
                get { return true; } 
            }
 
            public bool IsCompleted 
            {
                get { return true; } 
            }

            public static SecurityToken End(IAsyncResult result)
            { 
                if (result == null)
                { 
                    throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull("result"); 
                }
 
                SecurityTokenAsyncResult completedResult = result as SecurityTokenAsyncResult;
                if (completedResult == null)
                {
                    throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new ArgumentException(SR.GetString(SR.InvalidAsyncResult), "result")); 
                }
 
                return completedResult.token; 
            }
        } 
    }
}

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
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SecurityTokenProvider.cs source code in C# .NET

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