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//------------------------------------------------------------------------------
// <copyright file="TlsTokenBindingHandle.cs" company="Microsoft">
// Copyright (c) Microsoft Corporation. All rights reserved.
// </copyright>
//------------------------------------------------------------------------------
namespace System.Web.Util {
using System;
using System.Diagnostics.CodeAnalysis;
using System.Runtime.CompilerServices;
using System.Runtime.InteropServices;
using System.Web.Hosting;
internal sealed class TlsTokenBindingHandle : HeapAllocHandle {
[SuppressMessage("Microsoft.Reliability", "CA2006:UseSafeHandleToEncapsulateNativeResources", Justification = @"Pointer is valid while this SafeHandle is valid.")]
private readonly IntPtr _providedTokenBlob;
private readonly uint _providedTokenBlobSize;
[SuppressMessage("Microsoft.Reliability", "CA2006:UseSafeHandleToEncapsulateNativeResources", Justification = @"Pointer is valid while this SafeHandle is valid.")]
private readonly IntPtr _referredTokenBlob;
private readonly uint _referredtokenBlobSize;
internal TlsTokenBindingHandle(IntPtr mgdContext) {
int hr = UnsafeIISMethods.MgdGetTlsTokenBindingIdentifiers(
mgdContext,
ref handle,
out _providedTokenBlob,
out _providedTokenBlobSize,
out _referredTokenBlob,
out _referredtokenBlobSize);
Misc.ThrowIfFailedHr(hr);
}
public byte[] GetProvidedToken() {
return GetTokenImpl(_providedTokenBlob, _providedTokenBlobSize);
}
public byte[] GetReferredToken() {
return GetTokenImpl(_referredTokenBlob, _referredtokenBlobSize);
}
private byte[] GetTokenImpl(IntPtr blob, uint blobSize) {
if (blob == IntPtr.Zero || blobSize == 0) {
return null;
}
else {
byte[] retVal = new byte[blobSize];
int length = retVal.Length; // checks for overflow
bool refAdded = false;
RuntimeHelpers.PrepareConstrainedRegions();
try
{
DangerousAddRef(ref refAdded);
Marshal.Copy(blob, retVal, 0, length);
}
finally
{
if (refAdded)
{
DangerousRelease();
}
}
return retVal;
}
}
}
}
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