SafeChainEngineHandle.cs

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using System;
using Microsoft.Win32.SafeHandles;
 
namespace Internal.Cryptography.Pal.Native;
 
internal sealed class SafeChainEngineHandle : SafeHandleZeroOrMinusOneIsInvalid
{
    public static readonly SafeChainEngineHandle MachineChainEngine = new SafeChainEngineHandle((IntPtr)1);
 
    public static readonly SafeChainEngineHandle UserChainEngine = new SafeChainEngineHandle((IntPtr)0);
 
    public SafeChainEngineHandle()
        : base(ownsHandle: true)
    {
    }
 
    private SafeChainEngineHandle(IntPtr handle)
        : base(ownsHandle: true)
    {
        SetHandle(handle);
    }
 
    protected sealed override bool ReleaseHandle()
    {
        global::Interop.crypt32.CertFreeCertificateChainEngine(handle);
        SetHandle(IntPtr.Zero);
        return true;
    }
 
    protected override void Dispose(bool disposing)
    {
        if (this != UserChainEngine && this != MachineChainEngine)
        {
            base.Dispose(disposing);
        }
    }
}