safex509handles.cs source code in C# .NET

Source code for the .NET framework in C#

                        
Code:

                         / 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / clr / src / BCL / System / Security / Cryptography / X509Certificates / safex509handles.cs / 1305376 / 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 System.Runtime.Versioning;
    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

    [System.Security.SecurityCritical]  // auto-generated
    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 
        [ResourceExposure(ResourceScope.None)]
        [MethodImplAttribute(MethodImplOptions.InternalCall)] 
        [ReliabilityContract(Consistency.WillNotCorruptState, Cer.Success)]
        private static extern void _FreePCertContext(IntPtr pCert);

        [System.Security.SecurityCritical] 
        override protected bool ReleaseHandle()
        { 
            _FreePCertContext(handle); 
            return true;
        } 
    }

    [System.Security.SecurityCritical]  // auto-generated
    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 
        [ResourceExposure(ResourceScope.None)]
        [MethodImplAttribute(MethodImplOptions.InternalCall)] 
        [ReliabilityContract(Consistency.WillNotCorruptState, Cer.Success)]
        private static extern void _FreeCertStoreContext(IntPtr hCertStore);

        [System.Security.SecurityCritical] 
        override protected bool ReleaseHandle()
        { 
            _FreeCertStoreContext(handle); 
            return true;
        } 
    }
}

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

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