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#region Copyright notice and license
// Copyright 2017 gRPC authors.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#endregion
using System;
using System.Collections.Generic;
using System.Runtime.InteropServices;
using System.Text;
using Grpc.Core;
using Grpc.Core.Utils;
namespace Grpc.Core.Internal
{
/// <summary>
/// grpc_auth_context
/// </summary>
internal class AuthContextSafeHandle : SafeHandleZeroIsInvalid
{
static readonly NativeMethods Native = NativeMethods.Get();
private AuthContextSafeHandle()
{
}
/// <summary>
/// Copies contents of the native auth context into a new <c>AuthContext</c> instance.
/// </summary>
public AuthContext ToAuthContext()
{
if (IsInvalid)
{
return new AuthContext(null, new Dictionary<string, List<AuthProperty>>());
}
var peerIdentityPropertyName = Marshal.PtrToStringAnsi(Native.grpcsharp_auth_context_peer_identity_property_name(this));
var propertiesDict = new Dictionary<string, List<AuthProperty>>();
var it = Native.grpcsharp_auth_context_property_iterator(this);
IntPtr authPropertyPtr = IntPtr.Zero;
while ((authPropertyPtr = Native.grpcsharp_auth_property_iterator_next(ref it)) != IntPtr.Zero)
{
var authProperty = PtrToAuthProperty(authPropertyPtr);
if (!propertiesDict.ContainsKey(authProperty.Name))
{
propertiesDict[authProperty.Name] = new List<AuthProperty>();
}
propertiesDict[authProperty.Name].Add(authProperty);
}
return new AuthContext(peerIdentityPropertyName, propertiesDict);
}
protected override bool ReleaseHandle()
{
Native.grpcsharp_auth_context_release(handle);
return true;
}
private AuthProperty PtrToAuthProperty(IntPtr authPropertyPtr)
{
var nativeAuthProperty = (NativeAuthProperty) Marshal.PtrToStructure(authPropertyPtr, typeof(NativeAuthProperty));
var name = Marshal.PtrToStringAnsi(nativeAuthProperty.Name);
var valueBytes = new byte[(int) nativeAuthProperty.ValueLength];
Marshal.Copy(nativeAuthProperty.Value, valueBytes, 0, (int)nativeAuthProperty.ValueLength);
return AuthProperty.CreateUnsafe(name, valueBytes);
}
/// <summary>
/// grpc_auth_property
/// </summary>
internal struct NativeAuthProperty
{
public IntPtr Name;
public IntPtr Value;
public UIntPtr ValueLength;
}
/// <summary>
/// grpc_auth_property_iterator
/// </summary>
internal struct NativeAuthPropertyIterator
{
public IntPtr AuthContext;
public UIntPtr Index;
public IntPtr Name;
}
}
}
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