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// Copyright (c) Microsoft. All rights reserved.
// Licensed under the MIT license. See LICENSE file in the project root for full license information.
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
[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
[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;
}
}
}
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