/*++

Copyright (c) Microsoft Corporation

Licensed under the MIT license.

Module Name:

- DeviceComm.h

Abstract:

- This module assists in communicating via IOCTL messages to and from a Device server handle.

Author:

- Michael Niksa (MiNiksa) 14-Sept-2016

Revision History:

--*/

#pragma once

#include "..\host\conapi.h"

#include <wil\resource.h>

class DeviceComm

{

public:

DeviceComm(_In_ HANDLE Server);

~DeviceComm();

[[nodiscard]]

HRESULT SetServerInformation(_In_ CD_IO_SERVER_INFORMATION* const pServerInfo) const;

[[nodiscard]]

HRESULT ReadIo(_In_opt_ CD_IO_COMPLETE* const pCompletion,

_Out_ CONSOLE_API_MSG* const pMessage) const;

[[nodiscard]]

HRESULT CompleteIo(_In_ CD_IO_COMPLETE* const pCompletion) const;

[[nodiscard]]

HRESULT ReadInput(_In_ CD_IO_OPERATION* const pIoOperation) const;

[[nodiscard]]

HRESULT WriteOutput(_In_ CD_IO_OPERATION* const pIoOperation) const;

[[nodiscard]]

HRESULT AllowUIAccess() const;

private:

[[nodiscard]]

HRESULT _CallIoctl(_In_ DWORD dwIoControlCode,

_In_reads_bytes_opt_(cbInBufferSize) PVOID pInBuffer,

_In_ DWORD cbInBufferSize,

_Out_writes_bytes_opt_(cbOutBufferSize) PVOID pOutBuffer,

_In_ DWORD cbOutBufferSize) const;

wil::unique_handle _Server;

};