Code:
/ 4.0 / 4.0 / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / cdf / src / WCF / infocard / Client / System / IdentityModel / Selectors / CryptoHandle.cs / 1305376 / CryptoHandle.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 System.IdentityModel.Selectors { using System; using System.Runtime.InteropServices; using System.Threading; using System.Security; using System.Runtime.ConstrainedExecution; using System.Runtime.CompilerServices; using IDT=Microsoft.InfoCards.Diagnostics.InfoCardTrace; // // For common & resources // using Microsoft.InfoCards; // // Summary: // Wraps and manages the lifetime of a native crypto handle passed back from the native InfoCard API. // internal abstract class CryptoHandle : IDisposable { bool m_isDisposed; InternalRefCountedHandle m_internalHandle; // // Summary: // Creates a new CryptoHandle. ParamType has information as to what // nativeParameters has to be marshaled into. // protected CryptoHandle( InternalRefCountedHandle nativeHandle, DateTime expiration, IntPtr nativeParameters, Type paramType ) { m_internalHandle = nativeHandle; m_internalHandle.Initialize( expiration, Marshal.PtrToStructure( nativeParameters, paramType ) ); } // // Summary: // This constructor creates a new CryptoHandle instance with the same InternalRefCountedHandle and adds // a ref count to that InternalRefCountedHandle. // protected CryptoHandle( InternalRefCountedHandle internalHandle ) { m_internalHandle = internalHandle; m_internalHandle.AddRef(); } public InternalRefCountedHandle InternalHandle { get { ThrowIfDisposed(); return m_internalHandle; } } public DateTime Expiration { get { ThrowIfDisposed(); return m_internalHandle.Expiration; } } public object Parameters { get { ThrowIfDisposed(); return m_internalHandle.Parameters; } } // // Summary: // Creates a new CryptoHandle with same InternalRefCountedCryptoHandle. // public CryptoHandle Duplicate() { ThrowIfDisposed(); return OnDuplicate(); } // // Summary: // Allows subclasses to create a duplicate of their particular class. // protected abstract CryptoHandle OnDuplicate(); protected void ThrowIfDisposed() { if ( m_isDisposed ) { throw IDT.ThrowHelperError( new ObjectDisposedException( SR.GetString( SR.ClientCryptoSessionDisposed ) ) ); } } public void Dispose() { if ( m_isDisposed ) { return; } m_internalHandle.Release(); m_internalHandle = null; m_isDisposed = true; } // // Summary: // Given a pointer to a native cryptosession this method creates the appropriate CryptoHandle type. // static internal CryptoHandle Create( InternalRefCountedHandle nativeHandle ) { CryptoHandle handle = null; bool mustRelease = false; RuntimeHelpers.PrepareConstrainedRegions(); try { nativeHandle.DangerousAddRef( ref mustRelease ); RpcInfoCardCryptoHandle hCrypto = (RpcInfoCardCryptoHandle)Marshal.PtrToStructure( nativeHandle.DangerousGetHandle(), typeof( RpcInfoCardCryptoHandle ) ); DateTime expiration = DateTime.FromFileTimeUtc( hCrypto.expiration ); switch ( hCrypto.type ) { case RpcInfoCardCryptoHandle.HandleType.Asymmetric: handle = new AsymmetricCryptoHandle( nativeHandle, expiration, hCrypto.cryptoParameters ); break; case RpcInfoCardCryptoHandle.HandleType.Symmetric: handle = new SymmetricCryptoHandle( nativeHandle, expiration, hCrypto.cryptoParameters ); break; case RpcInfoCardCryptoHandle.HandleType.Transform: handle = new TransformCryptoHandle( nativeHandle, expiration, hCrypto.cryptoParameters ); break; case RpcInfoCardCryptoHandle.HandleType.Hash: handle = new HashCryptoHandle( nativeHandle, expiration, hCrypto.cryptoParameters ); break; default: IDT.DebugAssert( false, "Invalid crypto operation type" ); throw IDT.ThrowHelperError( new InvalidOperationException( SR.GetString( SR.GeneralExceptionMessage ) ) ); } return handle; } finally { if( mustRelease ) { nativeHandle.DangerousRelease(); } } } } // // Summary: // This class manages the lifetime of a native crypto handle through ref counts. Any number of CryptoHandles // may refer to a single InternalRefCountedHandle, but once they are all disposed this object will dispose // itself as well. // internal class InternalRefCountedHandle : SafeHandle { int m_refcount = 0; DateTime m_expiration; object m_parameters = null; [DllImport( "infocardapi.dll", EntryPoint ="CloseCryptoHandle", CharSet = CharSet.Unicode, CallingConvention = CallingConvention.StdCall, ExactSpelling = true, SetLastError = true ) ] [SuppressUnmanagedCodeSecurity] [ReliabilityContract(Consistency.WillNotCorruptState, Cer.Success)] private static extern bool CloseCryptoHandle( [In] IntPtr hKey ); private InternalRefCountedHandle() : base( IntPtr.Zero, true ) { m_refcount = 1; } public void Initialize( DateTime expiration, object parameters ) { m_expiration = expiration; m_parameters = parameters; } // // Summary: // The deserialized parameters specific to a particular type of CryptoHandle. // public object Parameters { get { ThrowIfInvalid(); return m_parameters; } } // // Summary: // The expiration of this CryptoHandle // public DateTime Expiration { get { ThrowIfInvalid(); return m_expiration; } } public void AddRef() { ThrowIfInvalid(); Interlocked.Increment( ref m_refcount ); } public void Release() { ThrowIfInvalid(); int refcount = Interlocked.Decrement( ref m_refcount ); if ( 0 == refcount ) { Dispose(); } } private void ThrowIfInvalid() { if ( IsInvalid ) { throw IDT.ThrowHelperError( new ObjectDisposedException( "InternalRefCountedHandle" ) ); } } public override bool IsInvalid { get { return ( IntPtr.Zero == base.handle ); } } protected override bool ReleaseHandle() { #pragma warning suppress 56523 return CloseCryptoHandle( base.handle ); } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. //------------------------------------------------------------------------------ // 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 System.IdentityModel.Selectors { using System; using System.Runtime.InteropServices; using System.Threading; using System.Security; using System.Runtime.ConstrainedExecution; using System.Runtime.CompilerServices; using IDT=Microsoft.InfoCards.Diagnostics.InfoCardTrace; // // For common & resources // using Microsoft.InfoCards; // // Summary: // Wraps and manages the lifetime of a native crypto handle passed back from the native InfoCard API. // internal abstract class CryptoHandle : IDisposable { bool m_isDisposed; InternalRefCountedHandle m_internalHandle; // // Summary: // Creates a new CryptoHandle. ParamType has information as to what // nativeParameters has to be marshaled into. // protected CryptoHandle( InternalRefCountedHandle nativeHandle, DateTime expiration, IntPtr nativeParameters, Type paramType ) { m_internalHandle = nativeHandle; m_internalHandle.Initialize( expiration, Marshal.PtrToStructure( nativeParameters, paramType ) ); } // // Summary: // This constructor creates a new CryptoHandle instance with the same InternalRefCountedHandle and adds // a ref count to that InternalRefCountedHandle. // protected CryptoHandle( InternalRefCountedHandle internalHandle ) { m_internalHandle = internalHandle; m_internalHandle.AddRef(); } public InternalRefCountedHandle InternalHandle { get { ThrowIfDisposed(); return m_internalHandle; } } public DateTime Expiration { get { ThrowIfDisposed(); return m_internalHandle.Expiration; } } public object Parameters { get { ThrowIfDisposed(); return m_internalHandle.Parameters; } } // // Summary: // Creates a new CryptoHandle with same InternalRefCountedCryptoHandle. // public CryptoHandle Duplicate() { ThrowIfDisposed(); return OnDuplicate(); } // // Summary: // Allows subclasses to create a duplicate of their particular class. // protected abstract CryptoHandle OnDuplicate(); protected void ThrowIfDisposed() { if ( m_isDisposed ) { throw IDT.ThrowHelperError( new ObjectDisposedException( SR.GetString( SR.ClientCryptoSessionDisposed ) ) ); } } public void Dispose() { if ( m_isDisposed ) { return; } m_internalHandle.Release(); m_internalHandle = null; m_isDisposed = true; } // // Summary: // Given a pointer to a native cryptosession this method creates the appropriate CryptoHandle type. // static internal CryptoHandle Create( InternalRefCountedHandle nativeHandle ) { CryptoHandle handle = null; bool mustRelease = false; RuntimeHelpers.PrepareConstrainedRegions(); try { nativeHandle.DangerousAddRef( ref mustRelease ); RpcInfoCardCryptoHandle hCrypto = (RpcInfoCardCryptoHandle)Marshal.PtrToStructure( nativeHandle.DangerousGetHandle(), typeof( RpcInfoCardCryptoHandle ) ); DateTime expiration = DateTime.FromFileTimeUtc( hCrypto.expiration ); switch ( hCrypto.type ) { case RpcInfoCardCryptoHandle.HandleType.Asymmetric: handle = new AsymmetricCryptoHandle( nativeHandle, expiration, hCrypto.cryptoParameters ); break; case RpcInfoCardCryptoHandle.HandleType.Symmetric: handle = new SymmetricCryptoHandle( nativeHandle, expiration, hCrypto.cryptoParameters ); break; case RpcInfoCardCryptoHandle.HandleType.Transform: handle = new TransformCryptoHandle( nativeHandle, expiration, hCrypto.cryptoParameters ); break; case RpcInfoCardCryptoHandle.HandleType.Hash: handle = new HashCryptoHandle( nativeHandle, expiration, hCrypto.cryptoParameters ); break; default: IDT.DebugAssert( false, "Invalid crypto operation type" ); throw IDT.ThrowHelperError( new InvalidOperationException( SR.GetString( SR.GeneralExceptionMessage ) ) ); } return handle; } finally { if( mustRelease ) { nativeHandle.DangerousRelease(); } } } } // // Summary: // This class manages the lifetime of a native crypto handle through ref counts. Any number of CryptoHandles // may refer to a single InternalRefCountedHandle, but once they are all disposed this object will dispose // itself as well. // internal class InternalRefCountedHandle : SafeHandle { int m_refcount = 0; DateTime m_expiration; object m_parameters = null; [DllImport( "infocardapi.dll", EntryPoint ="CloseCryptoHandle", CharSet = CharSet.Unicode, CallingConvention = CallingConvention.StdCall, ExactSpelling = true, SetLastError = true ) ] [SuppressUnmanagedCodeSecurity] [ReliabilityContract(Consistency.WillNotCorruptState, Cer.Success)] private static extern bool CloseCryptoHandle( [In] IntPtr hKey ); private InternalRefCountedHandle() : base( IntPtr.Zero, true ) { m_refcount = 1; } public void Initialize( DateTime expiration, object parameters ) { m_expiration = expiration; m_parameters = parameters; } // // Summary: // The deserialized parameters specific to a particular type of CryptoHandle. // public object Parameters { get { ThrowIfInvalid(); return m_parameters; } } // // Summary: // The expiration of this CryptoHandle // public DateTime Expiration { get { ThrowIfInvalid(); return m_expiration; } } public void AddRef() { ThrowIfInvalid(); Interlocked.Increment( ref m_refcount ); } public void Release() { ThrowIfInvalid(); int refcount = Interlocked.Decrement( ref m_refcount ); if ( 0 == refcount ) { Dispose(); } } private void ThrowIfInvalid() { if ( IsInvalid ) { throw IDT.ThrowHelperError( new ObjectDisposedException( "InternalRefCountedHandle" ) ); } } public override bool IsInvalid { get { return ( IntPtr.Zero == base.handle ); } } protected override bool ReleaseHandle() { #pragma warning suppress 56523 return CloseCryptoHandle( base.handle ); } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007.
Link Menu
This book is available now!
Buy at Amazon US or
Buy at Amazon UK
- MediaCommands.cs
- HealthMonitoringSection.cs
- SQLBytes.cs
- EntitySetBaseCollection.cs
- FrugalList.cs
- IPHostEntry.cs
- FormViewModeEventArgs.cs
- ImplicitInputBrush.cs
- NetworkStream.cs
- ControlCommandSet.cs
- EventMap.cs
- WebPartHeaderCloseVerb.cs
- unsafeIndexingFilterStream.cs
- SafeRegistryHandle.cs
- connectionpool.cs
- SafeReadContext.cs
- IdSpace.cs
- ReadContentAsBinaryHelper.cs
- ToolBarOverflowPanel.cs
- MemoryFailPoint.cs
- ActivityTypeDesigner.xaml.cs
- TextEditorCopyPaste.cs
- XPathDocumentNavigator.cs
- TiffBitmapDecoder.cs
- LineProperties.cs
- CustomTrackingQuery.cs
- CSharpCodeProvider.cs
- HttpResponseHeader.cs
- QuaternionAnimation.cs
- BamlBinaryReader.cs
- AssemblyHash.cs
- WebPartTransformerAttribute.cs
- FocusTracker.cs
- BasicKeyConstraint.cs
- RepeatInfo.cs
- Math.cs
- ButtonColumn.cs
- RegistryKey.cs
- Point3DAnimationBase.cs
- AttachmentCollection.cs
- ResourceReferenceExpressionConverter.cs
- TableProviderWrapper.cs
- HttpRuntime.cs
- SqlDataSourceStatusEventArgs.cs
- ObjectStateFormatter.cs
- DataGridCell.cs
- Figure.cs
- Timer.cs
- dataprotectionpermissionattribute.cs
- DriveInfo.cs
- LoginView.cs
- DataFormats.cs
- SingleKeyFrameCollection.cs
- HtmlWindow.cs
- CollaborationHelperFunctions.cs
- ConstraintStruct.cs
- CalculatedColumn.cs
- Model3DCollection.cs
- HashMembershipCondition.cs
- FontFamilyIdentifier.cs
- TracingConnection.cs
- MetadataPropertyvalue.cs
- Transform3D.cs
- ExternalException.cs
- TcpWorkerProcess.cs
- IndentTextWriter.cs
- UITypeEditor.cs
- MeasurementDCInfo.cs
- CodeGeneratorAttribute.cs
- IERequestCache.cs
- SingleQueryOperator.cs
- SchemaConstraints.cs
- ConfigurationElementProperty.cs
- IndicCharClassifier.cs
- HtmlTableCell.cs
- ObfuscateAssemblyAttribute.cs
- DocumentOrderQuery.cs
- XmlNamespaceDeclarationsAttribute.cs
- InstanceContextMode.cs
- LocalValueEnumerator.cs
- BasicHttpMessageSecurityElement.cs
- ContextStaticAttribute.cs
- AspNetRouteServiceHttpHandler.cs
- Viewport2DVisual3D.cs
- XmlSchemaExternal.cs
- UpdatableWrapper.cs
- ThousandthOfEmRealPoints.cs
- StaticFileHandler.cs
- SessionStateContainer.cs
- Rect3DValueSerializer.cs
- FolderLevelBuildProviderAppliesToAttribute.cs
- TraceContext.cs
- TextReader.cs
- GridItemCollection.cs
- SafeProcessHandle.cs
- InboundActivityHelper.cs
- LineUtil.cs
- TextFragmentEngine.cs
- RegexCapture.cs
- DoubleSumAggregationOperator.cs