/**

 * FreeRDP: A Remote Desktop Protocol Implementation

 * RAIL Virtual Channel Plugin

 *

 * Copyright 2011 Marc-Andre Moreau <marcandre.moreau@gmail.com>

 * Copyright 2011 Roman Barabanov <romanbarabanov@gmail.com>

 * Copyright 2011 Vic Lee

 * Copyright 2015 Thincast Technologies GmbH

 * Copyright 2015 DI (FH) Martin Haimberger <martin.haimberger@thincast.com>

 * Copyright 2017 Armin Novak <armin.novak@thincast.com>

 * Copyright 2017 Thincast Technologies GmbH

 *

 * 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.

 */

#ifdef HAVE_CONFIG_H

#include "config.h"

#endif

#include <winpr/crt.h>

#include <freerdp/types.h>

#include <freerdp/constants.h>

#include "rail_orders.h"

#include "rail_main.h"

RailClientContext* rail_get_client_interface(railPlugin* rail)

{

	RailClientContext* pInterface;

	if (!rail)

		return NULL;

	pInterface = (RailClientContext*)rail->channelEntryPoints.pInterface;

	return pInterface;

}

/**

 * Function description

 *

 * @return 0 on success, otherwise a Win32 error code

 */

static UINT rail_send(railPlugin* rail, wStream* s)

{

	UINT status;

	if (!rail)

	{

		Stream_Free(s, TRUE);

		return CHANNEL_RC_BAD_INIT_HANDLE;

	}

	status = rail->channelEntryPoints.pVirtualChannelWriteEx(

	    rail->InitHandle, rail->OpenHandle, Stream_Buffer(s), (UINT32)Stream_GetPosition(s), s);

	if (status != CHANNEL_RC_OK)

	{

		Stream_Free(s, TRUE);

		WLog_ERR(TAG, "pVirtualChannelWriteEx failed with %s [%08" PRIX32 "]",

		         WTSErrorToString(status), status);

	}

	return status;

}

/**

 * Function description

 *

 * @return 0 on success, otherwise a Win32 error code

 */

UINT rail_send_channel_data(railPlugin* rail, wStream* src)

{

	wStream* s;

	size_t length;

	if (!rail || !src)

		return ERROR_INVALID_PARAMETER;

	length = Stream_GetPosition(src);

	s = Stream_New(NULL, length);

	if (!s)

	{

		WLog_ERR(TAG, "Stream_New failed!");

		return CHANNEL_RC_NO_MEMORY;

	}

	Stream_Write(s, Stream_Buffer(src), length);

	return rail_send(rail, s);

}

/**

 * Callback Interface

 */

/**

 * Function description

 *

 * @return 0 on success, otherwise a Win32 error code

 */

static UINT rail_client_execute(RailClientContext* context, const RAIL_EXEC_ORDER* exec)

{

	char* exeOrFile;

	UINT error;

	railPlugin* rail;

	UINT16 flags;

	RAIL_UNICODE_STRING ruExeOrFile = { 0 };

	RAIL_UNICODE_STRING ruWorkingDir = { 0 };

	RAIL_UNICODE_STRING ruArguments = { 0 };

	if (!context || !exec)

		return ERROR_INVALID_PARAMETER;

	rail = (railPlugin*)context->handle;

	exeOrFile = exec->RemoteApplicationProgram;

	flags = exec->flags;

	if (!exeOrFile)

		return ERROR_INVALID_PARAMETER;

	if (!utf8_string_to_rail_string(exec->RemoteApplicationProgram,

	                                &ruExeOrFile) || /* RemoteApplicationProgram */

	    !utf8_string_to_rail_string(exec->RemoteApplicationWorkingDir,

	                                &ruWorkingDir) || /* ShellWorkingDirectory */

	    !utf8_string_to_rail_string(exec->RemoteApplicationArguments,

	                                &ruArguments)) /* RemoteApplicationCmdLine */

		error = ERROR_INTERNAL_ERROR;

	else

		error = rail_send_client_exec_order(rail, flags, &ruExeOrFile, &ruWorkingDir, &ruArguments);

	free(ruExeOrFile.string);

	free(ruWorkingDir.string);

	free(ruArguments.string);

	return error;

}

/**

 * Function description

 *

 * @return 0 on success, otherwise a Win32 error code

 */

static UINT rail_client_activate(RailClientContext* context, const RAIL_ACTIVATE_ORDER* activate)

{

	railPlugin* rail;

	if (!context || !activate)

		return ERROR_INVALID_PARAMETER;

	rail = (railPlugin*)context->handle;

	return rail_send_client_activate_order(rail, activate);

}

/**

 * Function description

 *

 * @return 0 on success, otherwise a Win32 error code

 */

static UINT rail_send_client_sysparam(RailClientContext* context, RAIL_SYSPARAM_ORDER* sysparam)

{

	wStream* s;

	size_t length = RAIL_SYSPARAM_ORDER_LENGTH;

	railPlugin* rail;

	UINT error;

	BOOL extendedSpiSupported;

	if (!context || !sysparam)

		return ERROR_INVALID_PARAMETER;

	rail = (railPlugin*)context->handle;

	switch (sysparam->param)

	{

		case SPI_SET_DRAG_FULL_WINDOWS:

		case SPI_SET_KEYBOARD_CUES:

		case SPI_SET_KEYBOARD_PREF:

		case SPI_SET_MOUSE_BUTTON_SWAP:

			length += 1;

			break;

		case SPI_SET_WORK_AREA:

		case SPI_DISPLAY_CHANGE:

		case SPI_TASKBAR_POS:

			length += 8;

			break;

		case SPI_SET_HIGH_CONTRAST:

			length += sysparam->highContrast.colorSchemeLength + 10;

			break;

		case SPI_SETFILTERKEYS:

			length += 20;

			break;

		case SPI_SETSTICKYKEYS:

		case SPI_SETCARETWIDTH:

		case SPI_SETTOGGLEKEYS:

			length += 4;

			break;

		default:

			return ERROR_BAD_ARGUMENTS;

	}

	s = rail_pdu_init(length);

	if (!s)

	{

		WLog_ERR(TAG, "rail_pdu_init failed!");

		return CHANNEL_RC_NO_MEMORY;

	}

	extendedSpiSupported = rail_is_extended_spi_supported(rail->channelFlags);

	if ((error = rail_write_sysparam_order(s, sysparam, extendedSpiSupported)))

	{

		WLog_ERR(TAG, "rail_write_client_sysparam_order failed with error %" PRIu32 "!", error);

		Stream_Free(s, TRUE);

		return error;

	}

	if ((error = rail_send_pdu(rail, s, TS_RAIL_ORDER_SYSPARAM)))

	{

		WLog_ERR(TAG, "rail_send_pdu failed with error %" PRIu32 "!", error);

	}

	Stream_Free(s, TRUE);

	return error;

}

/**

 * Function description

 *

 * @return 0 on success, otherwise a Win32 error code

 */

static UINT rail_client_system_param(RailClientContext* context,

                                     const RAIL_SYSPARAM_ORDER* sysInParam)

{

	UINT error = CHANNEL_RC_OK;

	RAIL_SYSPARAM_ORDER sysparam;

	if (!context || !sysInParam)

		return ERROR_INVALID_PARAMETER;

	sysparam = *sysInParam;

	if (sysparam.params & SPI_MASK_SET_HIGH_CONTRAST)

	{

		sysparam.param = SPI_SET_HIGH_CONTRAST;

		if ((error = rail_send_client_sysparam(context, &sysparam)))

		{

			WLog_ERR(TAG, "rail_send_client_sysparam failed with error %" PRIu32 "!", error);

			return error;

		}

	}

	if (sysparam.params & SPI_MASK_TASKBAR_POS)

	{

		sysparam.param = SPI_TASKBAR_POS;

		if ((error = rail_send_client_sysparam(context, &sysparam)))

		{

			WLog_ERR(TAG, "rail_send_client_sysparam failed with error %" PRIu32 "!", error);

			return error;

		}

	}

	if (sysparam.params & SPI_MASK_SET_MOUSE_BUTTON_SWAP)

	{

		sysparam.param = SPI_SET_MOUSE_BUTTON_SWAP;

		if ((error = rail_send_client_sysparam(context, &sysparam)))

		{

			WLog_ERR(TAG, "rail_send_client_sysparam failed with error %" PRIu32 "!", error);

			return error;

		}

	}

	if (sysparam.params & SPI_MASK_SET_KEYBOARD_PREF)

	{

		sysparam.param = SPI_SET_KEYBOARD_PREF;

		if ((error = rail_send_client_sysparam(context, &sysparam)))

		{

			WLog_ERR(TAG, "rail_send_client_sysparam failed with error %" PRIu32 "!", error);

			return error;

		}

	}

	if (sysparam.params & SPI_MASK_SET_DRAG_FULL_WINDOWS)

	{

		sysparam.param = SPI_SET_DRAG_FULL_WINDOWS;

		if ((error = rail_send_client_sysparam(context, &sysparam)))

		{

			WLog_ERR(TAG, "rail_send_client_sysparam failed with error %" PRIu32 "!", error);

			return error;

		}

	}

	if (sysparam.params & SPI_MASK_SET_KEYBOARD_CUES)

	{

		sysparam.param = SPI_SET_KEYBOARD_CUES;

		if ((error = rail_send_client_sysparam(context, &sysparam)))

		{

			WLog_ERR(TAG, "rail_send_client_sysparam failed with error %" PRIu32 "!", error);

			return error;

		}

	}

	if (sysparam.params & SPI_MASK_SET_WORK_AREA)

	{

		sysparam.param = SPI_SET_WORK_AREA;

		if ((error = rail_send_client_sysparam(context, &sysparam)))

		{

			WLog_ERR(TAG, "rail_send_client_sysparam failed with error %" PRIu32 "!", error);

			return error;

		}

	}

	return error;

}

/**

 * Function description

 *

 * @return 0 on success, otherwise a Win32 error code

 */

static UINT rail_client_system_command(RailClientContext* context,

                                       const RAIL_SYSCOMMAND_ORDER* syscommand)

{

	railPlugin* rail;

	if (!context || !syscommand)

		return ERROR_INVALID_PARAMETER;

	rail = (railPlugin*)context->handle;

	return rail_send_client_syscommand_order(rail, syscommand);

}

/**

 * Function description

 *

 * @return 0 on success, otherwise a Win32 error code

 */

static UINT rail_client_handshake(RailClientContext* context, const RAIL_HANDSHAKE_ORDER* handshake)

{

	railPlugin* rail;

	if (!context || !handshake)

		return ERROR_INVALID_PARAMETER;

	rail = (railPlugin*)context->handle;

	return rail_send_handshake_order(rail, handshake);

}

/**

 * Function description

 *

 * @return 0 on success, otherwise a Win32 error code

 */

static UINT rail_client_notify_event(RailClientContext* context,

                                     const RAIL_NOTIFY_EVENT_ORDER* notifyEvent)

{

	railPlugin* rail;

	if (!context || !notifyEvent)

		return ERROR_INVALID_PARAMETER;

	rail = (railPlugin*)context->handle;

	return rail_send_client_notify_event_order(rail, notifyEvent);

}

/**

 * Function description

 *

 * @return 0 on success, otherwise a Win32 error code

 */

static UINT rail_client_window_move(RailClientContext* context,

                                    const RAIL_WINDOW_MOVE_ORDER* windowMove)

{

	railPlugin* rail;

	if (!context || !windowMove)

		return ERROR_INVALID_PARAMETER;

	rail = (railPlugin*)context->handle;

	return rail_send_client_window_move_order(rail, windowMove);

}

/**

 * Function description

 *

 * @return 0 on success, otherwise a Win32 error code

 */

static UINT rail_client_information(RailClientContext* context,

                                    const RAIL_CLIENT_STATUS_ORDER* clientStatus)

{

	railPlugin* rail;

	if (!context || !clientStatus)

		return ERROR_INVALID_PARAMETER;

	rail = (railPlugin*)context->handle;

	return rail_send_client_status_order(rail, clientStatus);

}

/**

 * Function description

 *

 * @return 0 on success, otherwise a Win32 error code

 */

static UINT rail_client_system_menu(RailClientContext* context, const RAIL_SYSMENU_ORDER* sysmenu)

{

	railPlugin* rail;

	if (!context || !sysmenu)

		return ERROR_INVALID_PARAMETER;

	rail = (railPlugin*)context->handle;

	return rail_send_client_sysmenu_order(rail, sysmenu);

}

/**

 * Function description

 *

 * @return 0 on success, otherwise a Win32 error code

 */

static UINT rail_client_language_bar_info(RailClientContext* context,

                                          const RAIL_LANGBAR_INFO_ORDER* langBarInfo)

{

	railPlugin* rail;

	if (!context || !langBarInfo)

		return ERROR_INVALID_PARAMETER;

	rail = (railPlugin*)context->handle;

	return rail_send_client_langbar_info_order(rail, langBarInfo);

}

static UINT rail_client_language_ime_info(RailClientContext* context,

                                          const RAIL_LANGUAGEIME_INFO_ORDER* langImeInfo)

{

	railPlugin* rail;

	if (!context || !langImeInfo)

		return ERROR_INVALID_PARAMETER;

	rail = (railPlugin*)context->handle;

	return rail_send_client_languageime_info_order(rail, langImeInfo);

}

/**

 * Function description

 *

 * @return 0 on success, otherwise a Win32 error code

 */

static UINT rail_client_get_appid_request(RailClientContext* context,

                                          const RAIL_GET_APPID_REQ_ORDER* getAppIdReq)

{

	railPlugin* rail;

	if (!context || !getAppIdReq || !context->handle)

		return ERROR_INVALID_PARAMETER;

	rail = (railPlugin*)context->handle;

	return rail_send_client_get_appid_req_order(rail, getAppIdReq);

}

static UINT rail_client_compartment_info(RailClientContext* context,

                                         const RAIL_COMPARTMENT_INFO_ORDER* compartmentInfo)

{

	railPlugin* rail;

	if (!context || !compartmentInfo || !context->handle)

		return ERROR_INVALID_PARAMETER;

	rail = (railPlugin*)context->handle;

	return rail_send_client_compartment_info_order(rail, compartmentInfo);

}

static UINT rail_client_cloak(RailClientContext* context, const RAIL_CLOAK* cloak)

{

	railPlugin* rail;

	if (!context || !cloak || !context->handle)

		return ERROR_INVALID_PARAMETER;

	rail = (railPlugin*)context->handle;

	return rail_send_client_cloak_order(rail, cloak);

}

static UINT rail_client_snap_arrange(RailClientContext* context, const RAIL_SNAP_ARRANGE* snap)

{

	railPlugin* rail;

	if (!context || !snap || !context->handle)

		return ERROR_INVALID_PARAMETER;

	rail = (railPlugin*)context->handle;

	return rail_send_client_snap_arrange_order(rail, snap);

}

/**

 * Function description

 *

 * @return 0 on success, otherwise a Win32 error code

 */

static UINT rail_virtual_channel_event_data_received(railPlugin* rail, void* pData,

                                                     UINT32 dataLength, UINT32 totalLength,

                                                     UINT32 dataFlags)

{

	wStream* data_in;

	if ((dataFlags & CHANNEL_FLAG_SUSPEND) || (dataFlags & CHANNEL_FLAG_RESUME))

	{

		return CHANNEL_RC_OK;

	}

	if (dataFlags & CHANNEL_FLAG_FIRST)

	{

		if (rail->data_in)

			Stream_Free(rail->data_in, TRUE);

		rail->data_in = Stream_New(NULL, totalLength);

		if (!rail->data_in)

		{

			WLog_ERR(TAG, "Stream_New failed!");

			return CHANNEL_RC_NO_MEMORY;

		}

	}

	data_in = rail->data_in;

	if (!Stream_EnsureRemainingCapacity(data_in, dataLength))

	{

		WLog_ERR(TAG, "Stream_EnsureRemainingCapacity failed!");

		return CHANNEL_RC_NO_MEMORY;

	}

	Stream_Write(data_in, pData, dataLength);

	if (dataFlags & CHANNEL_FLAG_LAST)

	{

		if (Stream_Capacity(data_in) != Stream_GetPosition(data_in))

		{

			WLog_ERR(TAG, "rail_plugin_process_received: read error");

			return ERROR_INTERNAL_ERROR;

		}

		rail->data_in = NULL;

		Stream_SealLength(data_in);

		Stream_SetPosition(data_in, 0);

		if (!MessageQueue_Post(rail->queue, NULL, 0, (void*)data_in, NULL))

		{

			WLog_ERR(TAG, "MessageQueue_Post failed!");

			return ERROR_INTERNAL_ERROR;

		}

	}

	return CHANNEL_RC_OK;

}

static VOID VCAPITYPE rail_virtual_channel_open_event_ex(LPVOID lpUserParam, DWORD openHandle,

                                                         UINT event, LPVOID pData,

                                                         UINT32 dataLength, UINT32 totalLength,

                                                         UINT32 dataFlags)

{

	UINT error = CHANNEL_RC_OK;

	railPlugin* rail = (railPlugin*)lpUserParam;

	switch (event)

	{

		case CHANNEL_EVENT_DATA_RECEIVED:

			if (!rail || (rail->OpenHandle != openHandle))

			{

				WLog_ERR(TAG, "error no match");

				return;

			}

			if ((error = rail_virtual_channel_event_data_received(rail, pData, dataLength,

			                                                      totalLength, dataFlags)))

				WLog_ERR(TAG,

				         "rail_virtual_channel_event_data_received failed with error %" PRIu32 "!",

				         error);

			break;

		case CHANNEL_EVENT_WRITE_CANCELLED:

		case CHANNEL_EVENT_WRITE_COMPLETE:

		{

			wStream* s = (wStream*)pData;

			Stream_Free(s, TRUE);

		}

		break;

		case CHANNEL_EVENT_USER:

			break;

	}

	if (error && rail && rail->rdpcontext)

		setChannelError(rail->rdpcontext, error,

		                "rail_virtual_channel_open_event reported an error");

	return;

}

static DWORD WINAPI rail_virtual_channel_client_thread(LPVOID arg)

{

	wStream* data;

	wMessage message;

	railPlugin* rail = (railPlugin*)arg;

	UINT error = CHANNEL_RC_OK;

	while (1)

	{

		if (!MessageQueue_Wait(rail->queue))

		{

			WLog_ERR(TAG, "MessageQueue_Wait failed!");

			error = ERROR_INTERNAL_ERROR;

			break;

		}

		if (!MessageQueue_Peek(rail->queue, &message, TRUE))

		{

			WLog_ERR(TAG, "MessageQueue_Peek failed!");

			error = ERROR_INTERNAL_ERROR;

			break;

		}

		if (message.id == WMQ_QUIT)

			break;

		if (message.id == 0)

		{

			data = (wStream*)message.wParam;

			error = rail_order_recv(rail, data);

			Stream_Free(data, TRUE);

			if (error)

			{

				WLog_ERR(TAG, "rail_order_recv failed with error %" PRIu32 "!", error);

				break;

			}

		}

	}

	if (error && rail->rdpcontext)

		setChannelError(rail->rdpcontext, error,

		                "rail_virtual_channel_client_thread reported an error");

	ExitThread(error);

	return error;

}

/**

 * Function description

 *

 * @return 0 on success, otherwise a Win32 error code

 */

static UINT rail_virtual_channel_event_connected(railPlugin* rail, LPVOID pData, UINT32 dataLength)

{

	RailClientContext* context = rail_get_client_interface(rail);

	UINT status;

	status = rail->channelEntryPoints.pVirtualChannelOpenEx(rail->InitHandle, &rail->OpenHandle,

	                                                        rail->channelDef.name,

	                                                        rail_virtual_channel_open_event_ex);

	if (status != CHANNEL_RC_OK)

	{

		WLog_ERR(TAG, "pVirtualChannelOpen failed with %s [%08" PRIX32 "]",

		         WTSErrorToString(status), status);

		return status;

	}

	if (context)

	{

		IFCALLRET(context->OnOpen, status, context, &rail->sendHandshake);

		if (status != CHANNEL_RC_OK)

			WLog_ERR(TAG, "context->OnOpen failed with %s [%08" PRIX32 "]",

			         WTSErrorToString(status), status);

	}

	rail->queue = MessageQueue_New(NULL);

	if (!rail->queue)

	{

		WLog_ERR(TAG, "MessageQueue_New failed!");

		return CHANNEL_RC_NO_MEMORY;

	}

	if (!(rail->thread =

	          CreateThread(NULL, 0, rail_virtual_channel_client_thread, (void*)rail, 0, NULL)))

	{

		WLog_ERR(TAG, "CreateThread failed!");

		MessageQueue_Free(rail->queue);

		rail->queue = NULL;

		return ERROR_INTERNAL_ERROR;

	}

	return CHANNEL_RC_OK;

}

/**

 * Function description

 *

 * @return 0 on success, otherwise a Win32 error code

 */

static UINT rail_virtual_channel_event_disconnected(railPlugin* rail)

{

	UINT rc;

	if (rail->OpenHandle == 0)

		return CHANNEL_RC_OK;

	if (MessageQueue_PostQuit(rail->queue, 0) &&

	    (WaitForSingleObject(rail->thread, INFINITE) == WAIT_FAILED))

	{

		rc = GetLastError();

		WLog_ERR(TAG, "WaitForSingleObject failed with error %" PRIu32 "", rc);

		return rc;

	}

	MessageQueue_Free(rail->queue);

	CloseHandle(rail->thread);

	rail->queue = NULL;

	rail->thread = NULL;

	rc = rail->channelEntryPoints.pVirtualChannelCloseEx(rail->InitHandle, rail->OpenHandle);

	if (CHANNEL_RC_OK != rc)

	{

		WLog_ERR(TAG, "pVirtualChannelCloseEx failed with %s [%08" PRIX32 "]", WTSErrorToString(rc),

		         rc);

		return rc;

	}

	rail->OpenHandle = 0;

	if (rail->data_in)

	{

		Stream_Free(rail->data_in, TRUE);

		rail->data_in = NULL;

	}

	return CHANNEL_RC_OK;

}

static void rail_virtual_channel_event_terminated(railPlugin* rail)

{

	rail->InitHandle = 0;

	free(rail->context);

	free(rail);

}

static VOID VCAPITYPE rail_virtual_channel_init_event_ex(LPVOID lpUserParam, LPVOID pInitHandle,

                                                         UINT event, LPVOID pData, UINT dataLength)

{

	UINT error = CHANNEL_RC_OK;

	railPlugin* rail = (railPlugin*)lpUserParam;

	if (!rail || (rail->InitHandle != pInitHandle))

	{

		WLog_ERR(TAG, "error no match");

		return;

	}

	switch (event)

	{

		case CHANNEL_EVENT_CONNECTED:

			if ((error = rail_virtual_channel_event_connected(rail, pData, dataLength)))

				WLog_ERR(TAG, "rail_virtual_channel_event_connected failed with error %" PRIu32 "!",

				         error);

			break;

		case CHANNEL_EVENT_DISCONNECTED:

			if ((error = rail_virtual_channel_event_disconnected(rail)))

				WLog_ERR(TAG,

				         "rail_virtual_channel_event_disconnected failed with error %" PRIu32 "!",

				         error);

			break;

		case CHANNEL_EVENT_TERMINATED:

			rail_virtual_channel_event_terminated(rail);

			break;

		case CHANNEL_EVENT_ATTACHED:

		case CHANNEL_EVENT_DETACHED:

		default:

			break;

	}

	if (error && rail->rdpcontext)

		setChannelError(rail->rdpcontext, error,

		                "rail_virtual_channel_init_event_ex reported an error");

}

/* rail is always built-in */

#define VirtualChannelEntryEx rail_VirtualChannelEntryEx

BOOL VCAPITYPE VirtualChannelEntryEx(PCHANNEL_ENTRY_POINTS pEntryPoints, PVOID pInitHandle)

{

	UINT rc;

	railPlugin* rail;

	RailClientContext* context = NULL;

	CHANNEL_ENTRY_POINTS_FREERDP_EX* pEntryPointsEx;

	BOOL isFreerdp = FALSE;

	rail = (railPlugin*)calloc(1, sizeof(railPlugin));

	if (!rail)

	{

		WLog_ERR(TAG, "calloc failed!");

		return FALSE;

	}

	/* Default to automatically replying to server handshakes */

	rail->sendHandshake = TRUE;

	rail->channelDef.options = CHANNEL_OPTION_INITIALIZED | CHANNEL_OPTION_ENCRYPT_RDP |

	                           CHANNEL_OPTION_COMPRESS_RDP | CHANNEL_OPTION_SHOW_PROTOCOL;

	sprintf_s(rail->channelDef.name, ARRAYSIZE(rail->channelDef.name), RAIL_SVC_CHANNEL_NAME);

	pEntryPointsEx = (CHANNEL_ENTRY_POINTS_FREERDP_EX*)pEntryPoints;

	if ((pEntryPointsEx->cbSize >= sizeof(CHANNEL_ENTRY_POINTS_FREERDP_EX)) &&

	    (pEntryPointsEx->MagicNumber == FREERDP_CHANNEL_MAGIC_NUMBER))

	{

		context = (RailClientContext*)calloc(1, sizeof(RailClientContext));

		if (!context)

		{

			WLog_ERR(TAG, "calloc failed!");

			free(rail);

			return FALSE;

		}

		context->handle = (void*)rail;

		context->custom = NULL;

		context->ClientExecute = rail_client_execute;

		context->ClientActivate = rail_client_activate;

		context->ClientSystemParam = rail_client_system_param;

		context->ClientSystemCommand = rail_client_system_command;

		context->ClientHandshake = rail_client_handshake;

		context->ClientNotifyEvent = rail_client_notify_event;

		context->ClientWindowMove = rail_client_window_move;

		context->ClientInformation = rail_client_information;

		context->ClientSystemMenu = rail_client_system_menu;

		context->ClientLanguageBarInfo = rail_client_language_bar_info;

		context->ClientLanguageIMEInfo = rail_client_language_ime_info;

		context->ClientGetAppIdRequest = rail_client_get_appid_request;

		context->ClientSnapArrange = rail_client_snap_arrange;

		context->ClientCloak = rail_client_cloak;

		context->ClientCompartmentInfo = rail_client_compartment_info;

		rail->rdpcontext = pEntryPointsEx->context;

		rail->context = context;

		isFreerdp = TRUE;

	}

	rail->log = WLog_Get("com.freerdp.channels.rail.client");

	WLog_Print(rail->log, WLOG_DEBUG, "VirtualChannelEntryEx");

	CopyMemory(&(rail->channelEntryPoints), pEntryPoints, sizeof(CHANNEL_ENTRY_POINTS_FREERDP_EX));

	rail->InitHandle = pInitHandle;

	rc = rail->channelEntryPoints.pVirtualChannelInitEx(

	    rail, context, pInitHandle, &rail->channelDef, 1, VIRTUAL_CHANNEL_VERSION_WIN2000,

	    rail_virtual_channel_init_event_ex);