private void HandleInit(Message message)
{
var status = this.serverContext.AcceptSecurityContext(message.Token, out byte[] nextToken);
ContextDebugger.WriteLine($"[ServiceRequest] AcceptToken {status} | trip {tripCount} | next {nextToken?.Length ?? 0}");
tripCount++;
if (status == ContextStatus.Accepted || status == ContextStatus.RequiresContinuation)
{
if (nextToken != null && nextToken.Length > 0)
{
this.SendResponse(new Message(Operation.ServerToken)
{
Token = nextToken
});
}
if (status == ContextStatus.Accepted)
{
ContextDebugger.WriteLine($"[ServiceRequest] context user {this.serverContext.UserName}");
var imp = this.serverContext.ImpersonateClient();
var identity = Thread.CurrentPrincipal.Identity as WindowsIdentity;
ContextDebugger.WriteLine($"[ServiceRequest] impersonated {identity.Name} | {identity.ImpersonationLevel}");
}
}
}
private void Receive(byte[] readBuffer)
{
var message = Message.Deserialize(readBuffer);
ContextDebugger.WriteLine($"[ServiceRequest] received {message.Operation}; s4u: {message.S4UToken}");
if (message.Operation == Operation.ClientToken)
{
HandleInit(message);
}
else
{
this.OnReceived?.Invoke(message);
}
}
private void SendResponse(Message message)
{
ContextDebugger.WriteLine($"[ServiceRequest] Send Response {message.Operation}");
if (cancel.IsCancellationRequested)
{
throw new InvalidOperationException("Not connected");
}
var outBuffer = message.Serialize();
var lengthBuffer = new byte[4];
Endian.ConvertToBigEndian(outBuffer.Length, lengthBuffer);
readSocket.Send(lengthBuffer, 0, lengthBuffer.Length, SocketFlags.None, out SocketError error);
readSocket.Send(outBuffer, 0, outBuffer.Length, SocketFlags.None);
}