safex509handles.cs source code in C# .NET

                        Code:
                         / Dotnetfx_Win7_3.5.1 / Dotnetfx_Win7_3.5.1 / 3.5.1 / DEVDIV / depot / DevDiv / releases / whidbey / NetFXspW7 / ndp / clr / src / BCL / System / Security / Cryptography / X509Certificates / safex509handles.cs / 1 / safex509handles.cs
                        
                        
                            // ==++== 
//
//   Copyright (c) Microsoft Corporation.  All rights reserved.
//
// ==--== 

// 
// SafeX509Handles.cs 
//
 
namespace System.Security.Cryptography.X509Certificates {
    using System.Runtime.InteropServices;
    using System.Runtime.CompilerServices;
    using System.Runtime.ConstrainedExecution; 
    using Microsoft.Win32.SafeHandles;
 
    // Since we need sometimes to delete the key container associated with a cert 
    // context, the handle used in this class is actually a pointer
    // to a CERT_CTX unmanaged structure defined in COMX509Certificate.h 

    internal sealed class SafeCertContextHandle : SafeHandleZeroOrMinusOneIsInvalid {
        private SafeCertContextHandle() : base (true) {}
 
        // 0 is an Invalid Handle
        internal SafeCertContextHandle(IntPtr handle) : base (true) { 
            SetHandle(handle); 
        }
 
        internal static SafeCertContextHandle InvalidHandle {
            get { return new SafeCertContextHandle(IntPtr.Zero); }
        }
 
        internal IntPtr pCertContext {
            get { 
                if (handle == IntPtr.Zero) 
                    return IntPtr.Zero;
 
                return Marshal.ReadIntPtr(handle);
            }
        }
 
        // This method handles the case where pCert == NULL
        [MethodImplAttribute(MethodImplOptions.InternalCall)] 
        [ReliabilityContract(Consistency.WillNotCorruptState, Cer.Success)] 
        private static extern void _FreePCertContext(IntPtr pCert);
 
        override protected bool ReleaseHandle()
        {
            _FreePCertContext(handle);
            return true; 
        }
    } 
 
    internal sealed class SafeCertStoreHandle : SafeHandleZeroOrMinusOneIsInvalid {
        private SafeCertStoreHandle() : base (true) {} 

        // 0 is an Invalid Handle
        internal SafeCertStoreHandle(IntPtr handle) : base (true) {
            SetHandle(handle); 
        }
 
        internal static SafeCertStoreHandle InvalidHandle { 
            get { return new SafeCertStoreHandle(IntPtr.Zero); }
        } 

        // This method handles the case where hCertStore == NULL
        [MethodImplAttribute(MethodImplOptions.InternalCall)]
        [ReliabilityContract(Consistency.WillNotCorruptState, Cer.Success)] 
        private static extern void _FreeCertStoreContext(IntPtr hCertStore);
 
        override protected bool ReleaseHandle() 
        {
            _FreeCertStoreContext(handle); 
            return true;
        }
    }
} 

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
// ==++== 
//
//   Copyright (c) Microsoft Corporation.  All rights reserved.
//
// ==--== 

// 
// SafeX509Handles.cs 
//
 
namespace System.Security.Cryptography.X509Certificates {
    using System.Runtime.InteropServices;
    using System.Runtime.CompilerServices;
    using System.Runtime.ConstrainedExecution; 
    using Microsoft.Win32.SafeHandles;
 
    // Since we need sometimes to delete the key container associated with a cert 
    // context, the handle used in this class is actually a pointer
    // to a CERT_CTX unmanaged structure defined in COMX509Certificate.h 

    internal sealed class SafeCertContextHandle : SafeHandleZeroOrMinusOneIsInvalid {
        private SafeCertContextHandle() : base (true) {}
 
        // 0 is an Invalid Handle
        internal SafeCertContextHandle(IntPtr handle) : base (true) { 
            SetHandle(handle); 
        }
 
        internal static SafeCertContextHandle InvalidHandle {
            get { return new SafeCertContextHandle(IntPtr.Zero); }
        }
 
        internal IntPtr pCertContext {
            get { 
                if (handle == IntPtr.Zero) 
                    return IntPtr.Zero;
 
                return Marshal.ReadIntPtr(handle);
            }
        }
 
        // This method handles the case where pCert == NULL
        [MethodImplAttribute(MethodImplOptions.InternalCall)] 
        [ReliabilityContract(Consistency.WillNotCorruptState, Cer.Success)] 
        private static extern void _FreePCertContext(IntPtr pCert);
 
        override protected bool ReleaseHandle()
        {
            _FreePCertContext(handle);
            return true; 
        }
    } 
 
    internal sealed class SafeCertStoreHandle : SafeHandleZeroOrMinusOneIsInvalid {
        private SafeCertStoreHandle() : base (true) {} 

        // 0 is an Invalid Handle
        internal SafeCertStoreHandle(IntPtr handle) : base (true) {
            SetHandle(handle); 
        }
 
        internal static SafeCertStoreHandle InvalidHandle { 
            get { return new SafeCertStoreHandle(IntPtr.Zero); }
        } 

        // This method handles the case where hCertStore == NULL
        [MethodImplAttribute(MethodImplOptions.InternalCall)]
        [ReliabilityContract(Consistency.WillNotCorruptState, Cer.Success)] 
        private static extern void _FreeCertStoreContext(IntPtr hCertStore);
 
        override protected bool ReleaseHandle() 
        {
            _FreeCertStoreContext(handle); 
            return true;
        }
    }
} 

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
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