diff options
Diffstat (limited to 'channels/rail/server/rail_main.c')
| -rw-r--r-- | channels/rail/server/rail_main.c | 1728 |
1 files changed, 1728 insertions, 0 deletions
diff --git a/channels/rail/server/rail_main.c b/channels/rail/server/rail_main.c new file mode 100644 index 0000000..8e38c2b --- /dev/null +++ b/channels/rail/server/rail_main.c @@ -0,0 +1,1728 @@ +/** + * FreeRDP: A Remote Desktop Protocol Implementation + * RAIL Virtual Channel Plugin + * + * Copyright 2019 Mati Shabtay <matishabtay@gmail.com> + * + + * 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. + */ + +#include <freerdp/types.h> +#include <freerdp/constants.h> + +#include <freerdp/freerdp.h> +#include <freerdp/channels/log.h> + +#include <winpr/crt.h> +#include <winpr/synch.h> +#include <winpr/thread.h> +#include <winpr/stream.h> + +#include "rail_main.h" + +#define TAG CHANNELS_TAG("rail.server") + +/** + * Sends a single rail PDU on the channel + * + * @return 0 on success, otherwise a Win32 error code + */ +static UINT rail_send(RailServerContext* context, wStream* s, ULONG length) +{ + UINT status = CHANNEL_RC_OK; + ULONG written = 0; + + if (!context) + return CHANNEL_RC_BAD_INIT_HANDLE; + + if (!WTSVirtualChannelWrite(context->priv->rail_channel, (PCHAR)Stream_Buffer(s), length, + &written)) + { + WLog_ERR(TAG, "WTSVirtualChannelWrite failed!"); + status = ERROR_INTERNAL_ERROR; + } + + return status; +} + +/** + * Function description + * + * @return 0 on success, otherwise a Win32 error code + */ +static UINT rail_server_send_pdu(RailServerContext* context, wStream* s, UINT16 orderType) +{ + char buffer[128] = { 0 }; + UINT16 orderLength = 0; + + if (!context || !s) + return ERROR_INVALID_PARAMETER; + + orderLength = (UINT16)Stream_GetPosition(s); + Stream_SetPosition(s, 0); + rail_write_pdu_header(s, orderType, orderLength); + Stream_SetPosition(s, orderLength); + WLog_DBG(TAG, "Sending %s PDU, length: %" PRIu16 "", + rail_get_order_type_string_full(orderType, buffer, sizeof(buffer)), orderLength); + return rail_send(context, s, orderLength); +} + +/** + * Function description + * + * @return 0 on success, otherwise a Win32 error code + */ +static UINT rail_write_local_move_size_order(wStream* s, + const RAIL_LOCALMOVESIZE_ORDER* localMoveSize) +{ + if (!s || !localMoveSize) + return ERROR_INVALID_PARAMETER; + + Stream_Write_UINT32(s, localMoveSize->windowId); /* WindowId (4 bytes) */ + Stream_Write_UINT16(s, localMoveSize->isMoveSizeStart ? 1 : 0); /* IsMoveSizeStart (2 bytes) */ + Stream_Write_UINT16(s, localMoveSize->moveSizeType); /* MoveSizeType (2 bytes) */ + Stream_Write_UINT16(s, localMoveSize->posX); /* PosX (2 bytes) */ + Stream_Write_UINT16(s, localMoveSize->posY); /* PosY (2 bytes) */ + return ERROR_SUCCESS; +} + +/** + * Function description + * + * @return 0 on success, otherwise a Win32 error code + */ +static UINT rail_write_min_max_info_order(wStream* s, const RAIL_MINMAXINFO_ORDER* minMaxInfo) +{ + if (!s || !minMaxInfo) + return ERROR_INVALID_PARAMETER; + + Stream_Write_UINT32(s, minMaxInfo->windowId); /* WindowId (4 bytes) */ + Stream_Write_INT16(s, minMaxInfo->maxWidth); /* MaxWidth (2 bytes) */ + Stream_Write_INT16(s, minMaxInfo->maxHeight); /* MaxHeight (2 bytes) */ + Stream_Write_INT16(s, minMaxInfo->maxPosX); /* MaxPosX (2 bytes) */ + Stream_Write_INT16(s, minMaxInfo->maxPosY); /* MaxPosY (2 bytes) */ + Stream_Write_INT16(s, minMaxInfo->minTrackWidth); /* MinTrackWidth (2 bytes) */ + Stream_Write_INT16(s, minMaxInfo->minTrackHeight); /* MinTrackHeight (2 bytes) */ + Stream_Write_INT16(s, minMaxInfo->maxTrackWidth); /* MaxTrackWidth (2 bytes) */ + Stream_Write_INT16(s, minMaxInfo->maxTrackHeight); /* MaxTrackHeight (2 bytes) */ + return ERROR_SUCCESS; +} + +/** + * Function description + * + * @return 0 on success, otherwise a Win32 error code + */ +static UINT rail_write_taskbar_info_order(wStream* s, const RAIL_TASKBAR_INFO_ORDER* taskbarInfo) +{ + if (!s || !taskbarInfo) + return ERROR_INVALID_PARAMETER; + + Stream_Write_UINT32(s, taskbarInfo->TaskbarMessage); /* TaskbarMessage (4 bytes) */ + Stream_Write_UINT32(s, taskbarInfo->WindowIdTab); /* WindowIdTab (4 bytes) */ + Stream_Write_UINT32(s, taskbarInfo->Body); /* Body (4 bytes) */ + return ERROR_SUCCESS; +} + +/** + * Function description + * + * @return 0 on success, otherwise a Win32 error code + */ +static UINT rail_write_langbar_info_order(wStream* s, const RAIL_LANGBAR_INFO_ORDER* langbarInfo) +{ + if (!s || !langbarInfo) + return ERROR_INVALID_PARAMETER; + + Stream_Write_UINT32(s, langbarInfo->languageBarStatus); /* LanguageBarStatus (4 bytes) */ + return ERROR_SUCCESS; +} + +/** + * Function description + * + * @return 0 on success, otherwise a Win32 error code + */ +static UINT rail_write_exec_result_order(wStream* s, const RAIL_EXEC_RESULT_ORDER* execResult) +{ + if (!s || !execResult) + return ERROR_INVALID_PARAMETER; + + if (execResult->exeOrFile.length > 520 || execResult->exeOrFile.length < 1) + return ERROR_INVALID_DATA; + + Stream_Write_UINT16(s, execResult->flags); /* Flags (2 bytes) */ + Stream_Write_UINT16(s, execResult->execResult); /* ExecResult (2 bytes) */ + Stream_Write_UINT32(s, execResult->rawResult); /* RawResult (4 bytes) */ + Stream_Write_UINT16(s, 0); /* Padding (2 bytes) */ + Stream_Write_UINT16(s, execResult->exeOrFile.length); /* ExeOrFileLength (2 bytes) */ + Stream_Write(s, execResult->exeOrFile.string, + execResult->exeOrFile.length); /* ExeOrFile (variable) */ + return ERROR_SUCCESS; +} + +/** + * Function description + * + * @return 0 on success, otherwise a Win32 error code + */ +static UINT rail_write_z_order_sync_order(wStream* s, const RAIL_ZORDER_SYNC* zOrderSync) +{ + if (!s || !zOrderSync) + return ERROR_INVALID_PARAMETER; + + Stream_Write_UINT32(s, zOrderSync->windowIdMarker); /* WindowIdMarker (4 bytes) */ + return ERROR_SUCCESS; +} + +/** + * Function description + * + * @return 0 on success, otherwise a Win32 error code + */ +static UINT rail_write_cloak_order(wStream* s, const RAIL_CLOAK* cloak) +{ + if (!s || !cloak) + return ERROR_INVALID_PARAMETER; + + Stream_Write_UINT32(s, cloak->windowId); /* WindowId (4 bytes) */ + Stream_Write_UINT8(s, cloak->cloak ? 1 : 0); /* Cloaked (1 byte) */ + return ERROR_SUCCESS; +} + +/** + * Function description + * + * @return 0 on success, otherwise a Win32 error code + */ +static UINT +rail_write_power_display_request_order(wStream* s, + const RAIL_POWER_DISPLAY_REQUEST* powerDisplayRequest) +{ + if (!s || !powerDisplayRequest) + return ERROR_INVALID_PARAMETER; + + Stream_Write_UINT32(s, powerDisplayRequest->active ? 1 : 0); /* Active (4 bytes) */ + return ERROR_SUCCESS; +} + +/** + * Function description + * + * @return 0 on success, otherwise a Win32 error code + */ +static UINT rail_write_get_app_id_resp_order(wStream* s, + const RAIL_GET_APPID_RESP_ORDER* getAppidResp) +{ + if (!s || !getAppidResp) + return ERROR_INVALID_PARAMETER; + + Stream_Write_UINT32(s, getAppidResp->windowId); /* WindowId (4 bytes) */ + Stream_Write_UTF16_String( + s, getAppidResp->applicationId, + ARRAYSIZE(getAppidResp->applicationId)); /* ApplicationId (512 bytes) */ + return ERROR_SUCCESS; +} + +/** + * Function description + * + * @return 0 on success, otherwise a Win32 error code + */ +static UINT rail_write_get_appid_resp_ex_order(wStream* s, + const RAIL_GET_APPID_RESP_EX* getAppidRespEx) +{ + if (!s || !getAppidRespEx) + return ERROR_INVALID_PARAMETER; + + Stream_Write_UINT32(s, getAppidRespEx->windowID); /* WindowId (4 bytes) */ + Stream_Write_UTF16_String( + s, getAppidRespEx->applicationID, + ARRAYSIZE(getAppidRespEx->applicationID)); /* ApplicationId (520 bytes) */ + Stream_Write_UINT32(s, getAppidRespEx->processId); /* ProcessId (4 bytes) */ + Stream_Write_UTF16_String( + s, getAppidRespEx->processImageName, + ARRAYSIZE(getAppidRespEx->processImageName)); /* ProcessImageName (520 bytes) */ + return ERROR_SUCCESS; +} + +/** + * Function description + * + * @return 0 on success, otherwise a Win32 error code + */ +static UINT rail_send_server_handshake(RailServerContext* context, + const RAIL_HANDSHAKE_ORDER* handshake) +{ + wStream* s = NULL; + UINT error = 0; + + if (!context || !handshake) + return ERROR_INVALID_PARAMETER; + + s = rail_pdu_init(RAIL_HANDSHAKE_ORDER_LENGTH); + + if (!s) + { + WLog_ERR(TAG, "rail_pdu_init failed!"); + return CHANNEL_RC_NO_MEMORY; + } + + rail_write_handshake_order(s, handshake); + error = rail_server_send_pdu(context, s, TS_RAIL_ORDER_HANDSHAKE); + Stream_Free(s, TRUE); + return error; +} + +/** + * Function description + * + * @return 0 on success, otherwise a Win32 error code + */ +static UINT rail_send_server_handshake_ex(RailServerContext* context, + const RAIL_HANDSHAKE_EX_ORDER* handshakeEx) +{ + wStream* s = NULL; + UINT error = 0; + + if (!context || !handshakeEx || !context->priv) + return ERROR_INVALID_PARAMETER; + + s = rail_pdu_init(RAIL_HANDSHAKE_EX_ORDER_LENGTH); + + if (!s) + { + WLog_ERR(TAG, "rail_pdu_init failed!"); + return CHANNEL_RC_NO_MEMORY; + } + + rail_server_set_handshake_ex_flags(context, handshakeEx->railHandshakeFlags); + + rail_write_handshake_ex_order(s, handshakeEx); + error = rail_server_send_pdu(context, s, TS_RAIL_ORDER_HANDSHAKE_EX); + Stream_Free(s, TRUE); + return error; +} + +/** + * Function description + * + * @return 0 on success, otherwise a Win32 error code + */ +static UINT rail_send_server_sysparam(RailServerContext* context, + const RAIL_SYSPARAM_ORDER* sysparam) +{ + wStream* s = NULL; + UINT error = 0; + RailServerPrivate* priv = NULL; + BOOL extendedSpiSupported = 0; + + if (!context || !sysparam) + return ERROR_INVALID_PARAMETER; + + priv = context->priv; + + if (!priv) + return ERROR_INVALID_PARAMETER; + + extendedSpiSupported = rail_is_extended_spi_supported(context->priv->channelFlags); + s = rail_pdu_init(RAIL_SYSPARAM_ORDER_LENGTH); + + if (!s) + { + WLog_ERR(TAG, "rail_pdu_init failed!"); + return CHANNEL_RC_NO_MEMORY; + } + + rail_write_sysparam_order(s, sysparam, extendedSpiSupported); + error = rail_server_send_pdu(context, s, TS_RAIL_ORDER_SYSPARAM); + Stream_Free(s, TRUE); + return error; +} + +/** + * Function description + * + * @return 0 on success, otherwise a Win32 error code + */ +static UINT rail_send_server_local_move_size(RailServerContext* context, + const RAIL_LOCALMOVESIZE_ORDER* localMoveSize) +{ + wStream* s = NULL; + UINT error = 0; + + if (!context || !localMoveSize) + return ERROR_INVALID_PARAMETER; + + s = rail_pdu_init(RAIL_LOCALMOVESIZE_ORDER_LENGTH); + + if (!s) + { + WLog_ERR(TAG, "rail_pdu_init failed!"); + return CHANNEL_RC_NO_MEMORY; + } + + rail_write_local_move_size_order(s, localMoveSize); + error = rail_server_send_pdu(context, s, TS_RAIL_ORDER_LOCALMOVESIZE); + Stream_Free(s, TRUE); + return error; +} + +/** + * Function description + * + * @return 0 on success, otherwise a Win32 error code + */ +static UINT rail_send_server_min_max_info(RailServerContext* context, + const RAIL_MINMAXINFO_ORDER* minMaxInfo) +{ + wStream* s = NULL; + UINT error = 0; + + if (!context || !minMaxInfo) + return ERROR_INVALID_PARAMETER; + + s = rail_pdu_init(RAIL_MINMAXINFO_ORDER_LENGTH); + + if (!s) + { + WLog_ERR(TAG, "rail_pdu_init failed!"); + return CHANNEL_RC_NO_MEMORY; + } + + rail_write_min_max_info_order(s, minMaxInfo); + error = rail_server_send_pdu(context, s, TS_RAIL_ORDER_MINMAXINFO); + Stream_Free(s, TRUE); + return error; +} + +/** + * Function description + * + * @return 0 on success, otherwise a Win32 error code + */ +static UINT rail_send_server_taskbar_info(RailServerContext* context, + const RAIL_TASKBAR_INFO_ORDER* taskbarInfo) +{ + wStream* s = NULL; + UINT error = 0; + + if (!context || !taskbarInfo) + return ERROR_INVALID_PARAMETER; + + s = rail_pdu_init(RAIL_TASKBAR_INFO_ORDER_LENGTH); + + if (!s) + { + WLog_ERR(TAG, "rail_pdu_init failed!"); + return CHANNEL_RC_NO_MEMORY; + } + + rail_write_taskbar_info_order(s, taskbarInfo); + error = rail_server_send_pdu(context, s, TS_RAIL_ORDER_TASKBARINFO); + Stream_Free(s, TRUE); + return error; +} + +/** + * Function description + * + * @return 0 on success, otherwise a Win32 error code + */ +static UINT rail_send_server_langbar_info(RailServerContext* context, + const RAIL_LANGBAR_INFO_ORDER* langbarInfo) +{ + wStream* s = NULL; + UINT error = 0; + + if (!context || !langbarInfo) + return ERROR_INVALID_PARAMETER; + + s = rail_pdu_init(RAIL_LANGBAR_INFO_ORDER_LENGTH); + + if (!s) + { + WLog_ERR(TAG, "rail_pdu_init failed!"); + return CHANNEL_RC_NO_MEMORY; + } + + rail_write_langbar_info_order(s, langbarInfo); + error = rail_server_send_pdu(context, s, TS_RAIL_ORDER_LANGBARINFO); + Stream_Free(s, TRUE); + return error; +} + +/** + * Function description + * + * @return 0 on success, otherwise a Win32 error code + */ +static UINT rail_send_server_exec_result(RailServerContext* context, + const RAIL_EXEC_RESULT_ORDER* execResult) +{ + wStream* s = NULL; + UINT error = 0; + + if (!context || !execResult) + return ERROR_INVALID_PARAMETER; + + s = rail_pdu_init(RAIL_EXEC_RESULT_ORDER_LENGTH + execResult->exeOrFile.length); + + if (!s) + { + WLog_ERR(TAG, "rail_pdu_init failed!"); + return CHANNEL_RC_NO_MEMORY; + } + + rail_write_exec_result_order(s, execResult); + error = rail_server_send_pdu(context, s, TS_RAIL_ORDER_EXEC_RESULT); + Stream_Free(s, TRUE); + return error; +} + +/** + * Function description + * + * @return 0 on success, otherwise a Win32 error code + */ +static UINT rail_send_server_z_order_sync(RailServerContext* context, + const RAIL_ZORDER_SYNC* zOrderSync) +{ + wStream* s = NULL; + UINT error = 0; + + if (!context || !zOrderSync) + return ERROR_INVALID_PARAMETER; + + s = rail_pdu_init(RAIL_Z_ORDER_SYNC_ORDER_LENGTH); + + if (!s) + { + WLog_ERR(TAG, "rail_pdu_init failed!"); + return CHANNEL_RC_NO_MEMORY; + } + + rail_write_z_order_sync_order(s, zOrderSync); + error = rail_server_send_pdu(context, s, TS_RAIL_ORDER_ZORDER_SYNC); + Stream_Free(s, TRUE); + return error; +} + +/** + * Function description + * + * @return 0 on success, otherwise a Win32 error code + */ +static UINT rail_send_server_cloak(RailServerContext* context, const RAIL_CLOAK* cloak) +{ + wStream* s = NULL; + UINT error = 0; + + if (!context || !cloak) + return ERROR_INVALID_PARAMETER; + + s = rail_pdu_init(RAIL_CLOAK_ORDER_LENGTH); + + if (!s) + { + WLog_ERR(TAG, "rail_pdu_init failed!"); + return CHANNEL_RC_NO_MEMORY; + } + + rail_write_cloak_order(s, cloak); + error = rail_server_send_pdu(context, s, TS_RAIL_ORDER_CLOAK); + Stream_Free(s, TRUE); + return error; +} + +/** + * Function description + * + * @return 0 on success, otherwise a Win32 error code + */ +static UINT +rail_send_server_power_display_request(RailServerContext* context, + const RAIL_POWER_DISPLAY_REQUEST* powerDisplayRequest) +{ + wStream* s = NULL; + UINT error = 0; + + if (!context || !powerDisplayRequest) + return ERROR_INVALID_PARAMETER; + + s = rail_pdu_init(RAIL_POWER_DISPLAY_REQUEST_ORDER_LENGTH); + + if (!s) + { + WLog_ERR(TAG, "rail_pdu_init failed!"); + return CHANNEL_RC_NO_MEMORY; + } + + rail_write_power_display_request_order(s, powerDisplayRequest); + error = rail_server_send_pdu(context, s, TS_RAIL_ORDER_POWER_DISPLAY_REQUEST); + Stream_Free(s, TRUE); + return error; +} + +/** + * Function description + * + * @return 0 on success, otherwise a Win32 error coie + */ +static UINT rail_send_server_get_app_id_resp(RailServerContext* context, + const RAIL_GET_APPID_RESP_ORDER* getAppidResp) +{ + wStream* s = NULL; + UINT error = 0; + + if (!context || !getAppidResp) + return ERROR_INVALID_PARAMETER; + + s = rail_pdu_init(RAIL_GET_APPID_RESP_ORDER_LENGTH); + + if (!s) + { + WLog_ERR(TAG, "rail_pdu_init failed!"); + return CHANNEL_RC_NO_MEMORY; + } + + rail_write_get_app_id_resp_order(s, getAppidResp); + error = rail_server_send_pdu(context, s, TS_RAIL_ORDER_GET_APPID_RESP); + Stream_Free(s, TRUE); + return error; +} + +/** + * Function description + * + * @return 0 on success, otherwise a Win32 error code + */ +static UINT rail_send_server_get_appid_resp_ex(RailServerContext* context, + const RAIL_GET_APPID_RESP_EX* getAppidRespEx) +{ + wStream* s = NULL; + UINT error = 0; + + if (!context || !getAppidRespEx) + return ERROR_INVALID_PARAMETER; + + s = rail_pdu_init(RAIL_GET_APPID_RESP_EX_ORDER_LENGTH); + + if (!s) + { + WLog_ERR(TAG, "rail_pdu_init failed!"); + return CHANNEL_RC_NO_MEMORY; + } + + rail_write_get_appid_resp_ex_order(s, getAppidRespEx); + error = rail_server_send_pdu(context, s, TS_RAIL_ORDER_GET_APPID_RESP_EX); + Stream_Free(s, TRUE); + return error; +} + +/** + * Function description + * + * @return 0 on success, otherwise a Win32 error code + */ +static UINT rail_read_client_status_order(wStream* s, RAIL_CLIENT_STATUS_ORDER* clientStatus) +{ + if (!Stream_CheckAndLogRequiredLength(TAG, s, RAIL_CLIENT_STATUS_ORDER_LENGTH)) + return ERROR_INVALID_DATA; + + Stream_Read_UINT32(s, clientStatus->flags); /* Flags (4 bytes) */ + return CHANNEL_RC_OK; +} + +/** + * Function description + * + * @return 0 on success, otherwise a Win32 error code + */ +static UINT rail_read_exec_order(wStream* s, RAIL_EXEC_ORDER* exec) +{ + RAIL_EXEC_ORDER order = { 0 }; + UINT16 exeLen = 0; + UINT16 workLen = 0; + UINT16 argLen = 0; + + if (!Stream_CheckAndLogRequiredLength(TAG, s, RAIL_EXEC_ORDER_LENGTH)) + return ERROR_INVALID_DATA; + + Stream_Read_UINT16(s, exec->flags); /* Flags (2 bytes) */ + Stream_Read_UINT16(s, exeLen); /* ExeOrFileLength (2 bytes) */ + Stream_Read_UINT16(s, workLen); /* WorkingDirLength (2 bytes) */ + Stream_Read_UINT16(s, argLen); /* ArgumentsLength (2 bytes) */ + + if (!Stream_CheckAndLogRequiredLength(TAG, s, (size_t)exeLen + workLen + argLen)) + return ERROR_INVALID_DATA; + + if (exeLen > 0) + { + const SSIZE_T len = exeLen / sizeof(WCHAR); + exec->RemoteApplicationProgram = Stream_Read_UTF16_String_As_UTF8(s, len, NULL); + if (!exec->RemoteApplicationProgram) + goto fail; + } + if (workLen > 0) + { + const SSIZE_T len = workLen / sizeof(WCHAR); + exec->RemoteApplicationWorkingDir = Stream_Read_UTF16_String_As_UTF8(s, len, NULL); + if (!exec->RemoteApplicationWorkingDir) + goto fail; + } + if (argLen > 0) + { + const SSIZE_T len = argLen / sizeof(WCHAR); + exec->RemoteApplicationArguments = Stream_Read_UTF16_String_As_UTF8(s, len, NULL); + if (!exec->RemoteApplicationArguments) + goto fail; + } + + return CHANNEL_RC_OK; +fail: + free(exec->RemoteApplicationProgram); + free(exec->RemoteApplicationArguments); + free(exec->RemoteApplicationWorkingDir); + *exec = order; + return ERROR_INTERNAL_ERROR; +} + +/** + * Function description + * + * @return 0 on success, otherwise a Win32 error code + */ +static UINT rail_read_activate_order(wStream* s, RAIL_ACTIVATE_ORDER* activate) +{ + BYTE enabled = 0; + + if (!Stream_CheckAndLogRequiredLength(TAG, s, RAIL_ACTIVATE_ORDER_LENGTH)) + return ERROR_INVALID_DATA; + + Stream_Read_UINT32(s, activate->windowId); /* WindowId (4 bytes) */ + Stream_Read_UINT8(s, enabled); /* Enabled (1 byte) */ + activate->enabled = (enabled != 0) ? TRUE : FALSE; + return CHANNEL_RC_OK; +} + +/** + * Function description + * + * @return 0 on success, otherwise a Win32 error code + */ +static UINT rail_read_sysmenu_order(wStream* s, RAIL_SYSMENU_ORDER* sysmenu) +{ + if (!Stream_CheckAndLogRequiredLength(TAG, s, RAIL_SYSMENU_ORDER_LENGTH)) + return ERROR_INVALID_DATA; + + Stream_Read_UINT32(s, sysmenu->windowId); /* WindowId (4 bytes) */ + Stream_Read_INT16(s, sysmenu->left); /* Left (2 bytes) */ + Stream_Read_INT16(s, sysmenu->top); /* Top (2 bytes) */ + return CHANNEL_RC_OK; +} + +/** + * Function description + * + * @return 0 on success, otherwise a Win32 error code + */ +static UINT rail_read_syscommand_order(wStream* s, RAIL_SYSCOMMAND_ORDER* syscommand) +{ + if (!Stream_CheckAndLogRequiredLength(TAG, s, RAIL_SYSCOMMAND_ORDER_LENGTH)) + return ERROR_INVALID_DATA; + + Stream_Read_UINT32(s, syscommand->windowId); /* WindowId (4 bytes) */ + Stream_Read_UINT16(s, syscommand->command); /* Command (2 bytes) */ + return CHANNEL_RC_OK; +} + +/** + * Function description + * + * @return 0 on success, otherwise a Win32 error code + */ +static UINT rail_read_notify_event_order(wStream* s, RAIL_NOTIFY_EVENT_ORDER* notifyEvent) +{ + if (!Stream_CheckAndLogRequiredLength(TAG, s, RAIL_NOTIFY_EVENT_ORDER_LENGTH)) + return ERROR_INVALID_DATA; + + Stream_Read_UINT32(s, notifyEvent->windowId); /* WindowId (4 bytes) */ + Stream_Read_UINT32(s, notifyEvent->notifyIconId); /* NotifyIconId (4 bytes) */ + Stream_Read_UINT32(s, notifyEvent->message); /* Message (4 bytes) */ + return CHANNEL_RC_OK; +} + +/** + * Function description + * + * @return 0 on success, otherwise a Win32 error code + */ +static UINT rail_read_get_appid_req_order(wStream* s, RAIL_GET_APPID_REQ_ORDER* getAppidReq) +{ + if (!Stream_CheckAndLogRequiredLength(TAG, s, RAIL_GET_APPID_REQ_ORDER_LENGTH)) + return ERROR_INVALID_DATA; + + Stream_Read_UINT32(s, getAppidReq->windowId); /* WindowId (4 bytes) */ + return CHANNEL_RC_OK; +} + +/** + * Function description + * + * @return 0 on success, otherwise a Win32 error code + */ +static UINT rail_read_window_move_order(wStream* s, RAIL_WINDOW_MOVE_ORDER* windowMove) +{ + if (!Stream_CheckAndLogRequiredLength(TAG, s, RAIL_WINDOW_MOVE_ORDER_LENGTH)) + return ERROR_INVALID_DATA; + + Stream_Read_UINT32(s, windowMove->windowId); /* WindowId (4 bytes) */ + Stream_Read_INT16(s, windowMove->left); /* Left (2 bytes) */ + Stream_Read_INT16(s, windowMove->top); /* Top (2 bytes) */ + Stream_Read_INT16(s, windowMove->right); /* Right (2 bytes) */ + Stream_Read_INT16(s, windowMove->bottom); /* Bottom (2 bytes) */ + return CHANNEL_RC_OK; +} + +/** + * Function description + * + * @return 0 on success, otherwise a Win32 error code + */ +static UINT rail_read_snap_arange_order(wStream* s, RAIL_SNAP_ARRANGE* snapArrange) +{ + if (!Stream_CheckAndLogRequiredLength(TAG, s, RAIL_SNAP_ARRANGE_ORDER_LENGTH)) + return ERROR_INVALID_DATA; + + Stream_Read_UINT32(s, snapArrange->windowId); /* WindowId (4 bytes) */ + Stream_Read_INT16(s, snapArrange->left); /* Left (2 bytes) */ + Stream_Read_INT16(s, snapArrange->top); /* Top (2 bytes) */ + Stream_Read_INT16(s, snapArrange->right); /* Right (2 bytes) */ + Stream_Read_INT16(s, snapArrange->bottom); /* Bottom (2 bytes) */ + return CHANNEL_RC_OK; +} + +/** + * Function description + * + * @return 0 on success, otherwise a Win32 error code + */ +static UINT rail_read_langbar_info_order(wStream* s, RAIL_LANGBAR_INFO_ORDER* langbarInfo) +{ + if (!Stream_CheckAndLogRequiredLength(TAG, s, RAIL_LANGBAR_INFO_ORDER_LENGTH)) + return ERROR_INVALID_DATA; + + Stream_Read_UINT32(s, langbarInfo->languageBarStatus); /* LanguageBarStatus (4 bytes) */ + return CHANNEL_RC_OK; +} + +/** + * Function description + * + * @return 0 on success, otherwise a Win32 error code + */ +static UINT rail_read_language_ime_info_order(wStream* s, + RAIL_LANGUAGEIME_INFO_ORDER* languageImeInfo) +{ + if (!Stream_CheckAndLogRequiredLength(TAG, s, RAIL_LANGUAGEIME_INFO_ORDER_LENGTH)) + return ERROR_INVALID_DATA; + + Stream_Read_UINT32(s, languageImeInfo->ProfileType); /* ProfileType (4 bytes) */ + Stream_Read_UINT16(s, languageImeInfo->LanguageID); /* LanguageID (2 bytes) */ + Stream_Read( + s, &languageImeInfo->LanguageProfileCLSID, + sizeof(languageImeInfo->LanguageProfileCLSID)); /* LanguageProfileCLSID (16 bytes) */ + Stream_Read(s, &languageImeInfo->ProfileGUID, + sizeof(languageImeInfo->ProfileGUID)); /* ProfileGUID (16 bytes) */ + Stream_Read_UINT32(s, languageImeInfo->KeyboardLayout); /* KeyboardLayout (4 bytes) */ + return CHANNEL_RC_OK; +} + +/** + * Function description + * + * @return 0 on success, otherwise a Win32 error code + */ +static UINT rail_read_compartment_info_order(wStream* s, + RAIL_COMPARTMENT_INFO_ORDER* compartmentInfo) +{ + if (!Stream_CheckAndLogRequiredLength(TAG, s, RAIL_COMPARTMENT_INFO_ORDER_LENGTH)) + return ERROR_INVALID_DATA; + + Stream_Read_UINT32(s, compartmentInfo->ImeState); /* ImeState (4 bytes) */ + Stream_Read_UINT32(s, compartmentInfo->ImeConvMode); /* ImeConvMode (4 bytes) */ + Stream_Read_UINT32(s, compartmentInfo->ImeSentenceMode); /* ImeSentenceMode (4 bytes) */ + Stream_Read_UINT32(s, compartmentInfo->KanaMode); /* KANAMode (4 bytes) */ + return CHANNEL_RC_OK; +} + +/** + * Function description + * + * @return 0 on success, otherwise a Win32 error code + */ +static UINT rail_read_cloak_order(wStream* s, RAIL_CLOAK* cloak) +{ + BYTE cloaked = 0; + + if (!Stream_CheckAndLogRequiredLength(TAG, s, RAIL_CLOAK_ORDER_LENGTH)) + return ERROR_INVALID_DATA; + + Stream_Read_UINT32(s, cloak->windowId); /* WindowId (4 bytes) */ + Stream_Read_UINT8(s, cloaked); /* Cloaked (1 byte) */ + cloak->cloak = (cloaked != 0) ? TRUE : FALSE; + return CHANNEL_RC_OK; +} + +/** + * Function description + * + * @return 0 on success, otherwise a Win32 error code + */ +static UINT rail_recv_client_handshake_order(RailServerContext* context, + RAIL_HANDSHAKE_ORDER* handshake, wStream* s) +{ + UINT error = 0; + + if (!context || !handshake || !s) + return ERROR_INVALID_PARAMETER; + + if ((error = rail_read_handshake_order(s, handshake))) + { + WLog_ERR(TAG, "rail_read_handshake_order failed with error %" PRIu32 "!", error); + return error; + } + + IFCALLRET(context->ClientHandshake, error, context, handshake); + + if (error) + WLog_ERR(TAG, "context.ClientHandshake failed with error %" PRIu32 "", error); + + return error; +} + +/** + * Function description + * + * @return 0 on success, otherwise a Win32 error code + */ +static UINT rail_recv_client_client_status_order(RailServerContext* context, + RAIL_CLIENT_STATUS_ORDER* clientStatus, wStream* s) +{ + UINT error = 0; + + if (!context || !clientStatus || !s) + return ERROR_INVALID_PARAMETER; + + if ((error = rail_read_client_status_order(s, clientStatus))) + { + WLog_ERR(TAG, "rail_read_client_status_order failed with error %" PRIu32 "!", error); + return error; + } + + IFCALLRET(context->ClientClientStatus, error, context, clientStatus); + + if (error) + WLog_ERR(TAG, "context.ClientClientStatus failed with error %" PRIu32 "", error); + + return error; +} + +/** + * Function description + * + * @return 0 on success, otherwise a Win32 error code + */ +static UINT rail_recv_client_exec_order(RailServerContext* context, wStream* s) +{ + UINT error = 0; + RAIL_EXEC_ORDER exec = { 0 }; + + if (!context || !s) + return ERROR_INVALID_PARAMETER; + + if ((error = rail_read_exec_order(s, &exec))) + { + WLog_ERR(TAG, "rail_read_client_status_order failed with error %" PRIu32 "!", error); + return error; + } + + IFCALLRET(context->ClientExec, error, context, &exec); + + if (error) + WLog_ERR(TAG, "context.Exec failed with error %" PRIu32 "", error); + + free(exec.RemoteApplicationProgram); + free(exec.RemoteApplicationArguments); + free(exec.RemoteApplicationWorkingDir); + return error; +} + +/** + * Function description + * + * @return 0 on success, otherwise a Win32 error code + */ +static UINT rail_recv_client_sysparam_order(RailServerContext* context, + RAIL_SYSPARAM_ORDER* sysparam, wStream* s) +{ + UINT error = 0; + BOOL extendedSpiSupported = 0; + + if (!context || !sysparam || !s) + return ERROR_INVALID_PARAMETER; + + extendedSpiSupported = rail_is_extended_spi_supported(context->priv->channelFlags); + if ((error = rail_read_sysparam_order(s, sysparam, extendedSpiSupported))) + { + WLog_ERR(TAG, "rail_read_sysparam_order failed with error %" PRIu32 "!", error); + return error; + } + + IFCALLRET(context->ClientSysparam, error, context, sysparam); + + if (error) + WLog_ERR(TAG, "context.ClientSysparam failed with error %" PRIu32 "", error); + + return error; +} + +/** + * Function description + * + * @return 0 on success, otherwise a Win32 error code + */ +static UINT rail_recv_client_activate_order(RailServerContext* context, + RAIL_ACTIVATE_ORDER* activate, wStream* s) +{ + UINT error = 0; + + if (!context || !activate || !s) + return ERROR_INVALID_PARAMETER; + + if ((error = rail_read_activate_order(s, activate))) + { + WLog_ERR(TAG, "rail_read_activate_order failed with error %" PRIu32 "!", error); + return error; + } + + IFCALLRET(context->ClientActivate, error, context, activate); + + if (error) + WLog_ERR(TAG, "context.ClientActivate failed with error %" PRIu32 "", error); + + return error; +} + +/** + * Function description + * + * @return 0 on success, otherwise a Win32 error code + */ +static UINT rail_recv_client_sysmenu_order(RailServerContext* context, RAIL_SYSMENU_ORDER* sysmenu, + wStream* s) +{ + UINT error = 0; + + if (!context || !sysmenu || !s) + return ERROR_INVALID_PARAMETER; + + if ((error = rail_read_sysmenu_order(s, sysmenu))) + { + WLog_ERR(TAG, "rail_read_sysmenu_order failed with error %" PRIu32 "!", error); + return error; + } + + IFCALLRET(context->ClientSysmenu, error, context, sysmenu); + + if (error) + WLog_ERR(TAG, "context.ClientSysmenu failed with error %" PRIu32 "", error); + + return error; +} + +/** + * Function description + * + * @return 0 on success, otherwise a Win32 error code + */ +static UINT rail_recv_client_syscommand_order(RailServerContext* context, + RAIL_SYSCOMMAND_ORDER* syscommand, wStream* s) +{ + UINT error = 0; + + if (!context || !syscommand || !s) + return ERROR_INVALID_PARAMETER; + + if ((error = rail_read_syscommand_order(s, syscommand))) + { + WLog_ERR(TAG, "rail_read_syscommand_order failed with error %" PRIu32 "!", error); + return error; + } + + IFCALLRET(context->ClientSyscommand, error, context, syscommand); + + if (error) + WLog_ERR(TAG, "context.ClientSyscommand failed with error %" PRIu32 "", error); + + return error; +} + +/** + * Function description + * + * @return 0 on success, otherwise a Win32 error code + */ +static UINT rail_recv_client_notify_event_order(RailServerContext* context, + RAIL_NOTIFY_EVENT_ORDER* notifyEvent, wStream* s) +{ + UINT error = 0; + + if (!context || !notifyEvent || !s) + return ERROR_INVALID_PARAMETER; + + if ((error = rail_read_notify_event_order(s, notifyEvent))) + { + WLog_ERR(TAG, "rail_read_notify_event_order failed with error %" PRIu32 "!", error); + return error; + } + + IFCALLRET(context->ClientNotifyEvent, error, context, notifyEvent); + + if (error) + WLog_ERR(TAG, "context.ClientNotifyEvent failed with error %" PRIu32 "", error); + + return error; +} + +/** + * Function description + * + * @return 0 on success, otherwise a Win32 error code + */ +static UINT rail_recv_client_window_move_order(RailServerContext* context, + RAIL_WINDOW_MOVE_ORDER* windowMove, wStream* s) +{ + UINT error = 0; + + if (!context || !windowMove || !s) + return ERROR_INVALID_PARAMETER; + + if ((error = rail_read_window_move_order(s, windowMove))) + { + WLog_ERR(TAG, "rail_read_window_move_order failed with error %" PRIu32 "!", error); + return error; + } + + IFCALLRET(context->ClientWindowMove, error, context, windowMove); + + if (error) + WLog_ERR(TAG, "context.ClientWindowMove failed with error %" PRIu32 "", error); + + return error; +} + +/** + * Function description + * + * @return 0 on success, otherwise a Win32 error code + */ +static UINT rail_recv_client_snap_arrange_order(RailServerContext* context, + RAIL_SNAP_ARRANGE* snapArrange, wStream* s) +{ + UINT error = 0; + + if (!context || !snapArrange || !s) + return ERROR_INVALID_PARAMETER; + + if ((error = rail_read_snap_arange_order(s, snapArrange))) + { + WLog_ERR(TAG, "rail_read_snap_arange_order failed with error %" PRIu32 "!", error); + return error; + } + + IFCALLRET(context->ClientSnapArrange, error, context, snapArrange); + + if (error) + WLog_ERR(TAG, "context.ClientSnapArrange failed with error %" PRIu32 "", error); + + return error; +} + +/** + * Function description + * + * @return 0 on success, otherwise a Win32 error code + */ +static UINT rail_recv_client_get_appid_req_order(RailServerContext* context, + RAIL_GET_APPID_REQ_ORDER* getAppidReq, wStream* s) +{ + UINT error = 0; + + if (!context || !getAppidReq || !s) + return ERROR_INVALID_PARAMETER; + + if ((error = rail_read_get_appid_req_order(s, getAppidReq))) + { + WLog_ERR(TAG, "rail_read_get_appid_req_order failed with error %" PRIu32 "!", error); + return error; + } + + IFCALLRET(context->ClientGetAppidReq, error, context, getAppidReq); + + if (error) + WLog_ERR(TAG, "context.ClientGetAppidReq failed with error %" PRIu32 "", error); + + return error; +} + +/** + * Function description + * + * @return 0 on success, otherwise a Win32 error code + */ +static UINT rail_recv_client_langbar_info_order(RailServerContext* context, + RAIL_LANGBAR_INFO_ORDER* langbarInfo, wStream* s) +{ + UINT error = 0; + + if (!context || !langbarInfo || !s) + return ERROR_INVALID_PARAMETER; + + if ((error = rail_read_langbar_info_order(s, langbarInfo))) + { + WLog_ERR(TAG, "rail_read_langbar_info_order failed with error %" PRIu32 "!", error); + return error; + } + + IFCALLRET(context->ClientLangbarInfo, error, context, langbarInfo); + + if (error) + WLog_ERR(TAG, "context.ClientLangbarInfo failed with error %" PRIu32 "", error); + + return error; +} + +/** + * Function description + * + * @return 0 on success, otherwise a Win32 error code + */ +static UINT rail_recv_client_language_ime_info_order(RailServerContext* context, + RAIL_LANGUAGEIME_INFO_ORDER* languageImeInfo, + wStream* s) +{ + UINT error = 0; + + if (!context || !languageImeInfo || !s) + return ERROR_INVALID_PARAMETER; + + if ((error = rail_read_language_ime_info_order(s, languageImeInfo))) + { + WLog_ERR(TAG, "rail_read_language_ime_info_order failed with error %" PRIu32 "!", error); + return error; + } + + IFCALLRET(context->ClientLanguageImeInfo, error, context, languageImeInfo); + + if (error) + WLog_ERR(TAG, "context.ClientLanguageImeInfo failed with error %" PRIu32 "", error); + + return error; +} + +/** + * Function description + * + * @return 0 on success, otherwise a Win32 error code + */ +static UINT rail_recv_client_compartment_info(RailServerContext* context, + RAIL_COMPARTMENT_INFO_ORDER* compartmentInfo, + wStream* s) +{ + UINT error = 0; + + if (!context || !compartmentInfo || !s) + return ERROR_INVALID_PARAMETER; + + if ((error = rail_read_compartment_info_order(s, compartmentInfo))) + { + WLog_ERR(TAG, "rail_read_compartment_info_order failed with error %" PRIu32 "!", error); + return error; + } + + IFCALLRET(context->ClientCompartmentInfo, error, context, compartmentInfo); + + if (error) + WLog_ERR(TAG, "context.ClientCompartmentInfo failed with error %" PRIu32 "", error); + + return error; +} + +/** + * Function description + * + * @return 0 on success, otherwise a Win32 error code + */ +static UINT rail_recv_client_cloak_order(RailServerContext* context, RAIL_CLOAK* cloak, wStream* s) +{ + UINT error = 0; + + if (!context || !cloak || !s) + return ERROR_INVALID_PARAMETER; + + if ((error = rail_read_cloak_order(s, cloak))) + { + WLog_ERR(TAG, "rail_read_cloak_order failed with error %" PRIu32 "!", error); + return error; + } + + IFCALLRET(context->ClientCloak, error, context, cloak); + + if (error) + WLog_ERR(TAG, "context.Cloak failed with error %" PRIu32 "", error); + + return error; +} + +static UINT rail_recv_client_text_scale_order(RailServerContext* context, wStream* s) +{ + UINT error = CHANNEL_RC_OK; + UINT32 TextScaleFactor = 0; + + if (!context || !s) + return ERROR_INVALID_PARAMETER; + + if (!Stream_CheckAndLogRequiredLength(TAG, s, 4)) + return ERROR_INVALID_DATA; + + Stream_Read_UINT32(s, TextScaleFactor); + IFCALLRET(context->ClientTextScale, error, context, TextScaleFactor); + + if (error) + WLog_ERR(TAG, "context.TextScale failed with error %" PRIu32 "", error); + + return error; +} + +static UINT rail_recv_client_caret_blink(RailServerContext* context, wStream* s) +{ + UINT error = CHANNEL_RC_OK; + UINT32 CaretBlinkRate = 0; + + if (!context || !s) + return ERROR_INVALID_PARAMETER; + + if (!Stream_CheckAndLogRequiredLength(TAG, s, 4)) + return ERROR_INVALID_DATA; + + Stream_Read_UINT32(s, CaretBlinkRate); + IFCALLRET(context->ClientCaretBlinkRate, error, context, CaretBlinkRate); + + if (error) + WLog_ERR(TAG, "context.CaretBlinkRate failed with error %" PRIu32 "", error); + + return error; +} + +static DWORD WINAPI rail_server_thread(LPVOID arg) +{ + RailServerContext* context = (RailServerContext*)arg; + RailServerPrivate* priv = context->priv; + DWORD status = 0; + DWORD nCount = 0; + HANDLE events[8]; + UINT error = CHANNEL_RC_OK; + events[nCount++] = priv->channelEvent; + events[nCount++] = priv->stopEvent; + + while (TRUE) + { + status = WaitForMultipleObjects(nCount, events, FALSE, INFINITE); + + if (status == WAIT_FAILED) + { + error = GetLastError(); + WLog_ERR(TAG, "WaitForMultipleObjects failed with error %" PRIu32 "!", error); + break; + } + + status = WaitForSingleObject(context->priv->stopEvent, 0); + + if (status == WAIT_FAILED) + { + error = GetLastError(); + WLog_ERR(TAG, "WaitForSingleObject failed with error %" PRIu32 "!", error); + break; + } + + if (status == WAIT_OBJECT_0) + break; + + status = WaitForSingleObject(context->priv->channelEvent, 0); + + if (status == WAIT_FAILED) + { + error = GetLastError(); + WLog_ERR( + TAG, + "WaitForSingleObject(context->priv->channelEvent, 0) failed with error %" PRIu32 + "!", + error); + break; + } + + if (status == WAIT_OBJECT_0) + { + if ((error = rail_server_handle_messages(context))) + { + WLog_ERR(TAG, "rail_server_handle_messages failed with error %" PRIu32 "", error); + break; + } + } + } + + if (error && context->rdpcontext) + setChannelError(context->rdpcontext, error, "rail_server_thread reported an error"); + + ExitThread(error); + return error; +} + +/** + * Function description + * + * @return 0 on success, otherwise a Win32 error code + */ +static UINT rail_server_start(RailServerContext* context) +{ + void* buffer = NULL; + DWORD bytesReturned = 0; + RailServerPrivate* priv = context->priv; + UINT error = ERROR_INTERNAL_ERROR; + priv->rail_channel = + WTSVirtualChannelOpen(context->vcm, WTS_CURRENT_SESSION, RAIL_SVC_CHANNEL_NAME); + + if (!priv->rail_channel) + { + WLog_ERR(TAG, "WTSVirtualChannelOpen failed!"); + return error; + } + + if (!WTSVirtualChannelQuery(priv->rail_channel, WTSVirtualEventHandle, &buffer, + &bytesReturned) || + (bytesReturned != sizeof(HANDLE))) + { + WLog_ERR(TAG, + "error during WTSVirtualChannelQuery(WTSVirtualEventHandle) or invalid returned " + "size(%" PRIu32 ")", + bytesReturned); + + if (buffer) + WTSFreeMemory(buffer); + + goto out_close; + } + + CopyMemory(&priv->channelEvent, buffer, sizeof(HANDLE)); + WTSFreeMemory(buffer); + context->priv->stopEvent = CreateEvent(NULL, TRUE, FALSE, NULL); + + if (!context->priv->stopEvent) + { + WLog_ERR(TAG, "CreateEvent failed!"); + goto out_close; + } + + context->priv->thread = CreateThread(NULL, 0, rail_server_thread, (void*)context, 0, NULL); + + if (!context->priv->thread) + { + WLog_ERR(TAG, "CreateThread failed!"); + goto out_stop_event; + } + + return CHANNEL_RC_OK; +out_stop_event: + CloseHandle(context->priv->stopEvent); + context->priv->stopEvent = NULL; +out_close: + WTSVirtualChannelClose(context->priv->rail_channel); + context->priv->rail_channel = NULL; + return error; +} + +static BOOL rail_server_stop(RailServerContext* context) +{ + RailServerPrivate* priv = (RailServerPrivate*)context->priv; + + if (priv->thread) + { + SetEvent(priv->stopEvent); + + if (WaitForSingleObject(priv->thread, INFINITE) == WAIT_FAILED) + { + WLog_ERR(TAG, "WaitForSingleObject failed with error %" PRIu32 "", GetLastError()); + return FALSE; + } + + CloseHandle(priv->thread); + CloseHandle(priv->stopEvent); + priv->thread = NULL; + priv->stopEvent = NULL; + } + + if (priv->rail_channel) + { + WTSVirtualChannelClose(priv->rail_channel); + priv->rail_channel = NULL; + } + + priv->channelEvent = NULL; + return TRUE; +} + +RailServerContext* rail_server_context_new(HANDLE vcm) +{ + RailServerContext* context = NULL; + RailServerPrivate* priv = NULL; + context = (RailServerContext*)calloc(1, sizeof(RailServerContext)); + + if (!context) + { + WLog_ERR(TAG, "calloc failed!"); + return NULL; + } + + context->vcm = vcm; + context->Start = rail_server_start; + context->Stop = rail_server_stop; + context->ServerHandshake = rail_send_server_handshake; + context->ServerHandshakeEx = rail_send_server_handshake_ex; + context->ServerSysparam = rail_send_server_sysparam; + context->ServerLocalMoveSize = rail_send_server_local_move_size; + context->ServerMinMaxInfo = rail_send_server_min_max_info; + context->ServerTaskbarInfo = rail_send_server_taskbar_info; + context->ServerLangbarInfo = rail_send_server_langbar_info; + context->ServerExecResult = rail_send_server_exec_result; + context->ServerGetAppidResp = rail_send_server_get_app_id_resp; + context->ServerZOrderSync = rail_send_server_z_order_sync; + context->ServerCloak = rail_send_server_cloak; + context->ServerPowerDisplayRequest = rail_send_server_power_display_request; + context->ServerGetAppidRespEx = rail_send_server_get_appid_resp_ex; + context->priv = priv = (RailServerPrivate*)calloc(1, sizeof(RailServerPrivate)); + + if (!priv) + { + WLog_ERR(TAG, "calloc failed!"); + goto out_free; + } + + /* Create shared input stream */ + priv->input_stream = Stream_New(NULL, 4096); + + if (!priv->input_stream) + { + WLog_ERR(TAG, "Stream_New failed!"); + goto out_free_priv; + } + + return context; +out_free_priv: + free(context->priv); +out_free: + free(context); + return NULL; +} + +void rail_server_context_free(RailServerContext* context) +{ + if (context->priv) + Stream_Free(context->priv->input_stream, TRUE); + + free(context->priv); + free(context); +} + +void rail_server_set_handshake_ex_flags(RailServerContext* context, DWORD flags) +{ + RailServerPrivate* priv = NULL; + + if (!context || !context->priv) + return; + + priv = context->priv; + priv->channelFlags = flags; +} + +UINT rail_server_handle_messages(RailServerContext* context) +{ + char buffer[128] = { 0 }; + UINT status = CHANNEL_RC_OK; + DWORD bytesReturned = 0; + UINT16 orderType = 0; + UINT16 orderLength = 0; + RailServerPrivate* priv = context->priv; + wStream* s = priv->input_stream; + + /* Read header */ + if (!Stream_EnsureRemainingCapacity(s, RAIL_PDU_HEADER_LENGTH)) + { + WLog_ERR(TAG, "Stream_EnsureRemainingCapacity failed, RAIL_PDU_HEADER_LENGTH"); + return CHANNEL_RC_NO_MEMORY; + } + + if (!WTSVirtualChannelRead(priv->rail_channel, 0, Stream_Pointer(s), RAIL_PDU_HEADER_LENGTH, + &bytesReturned)) + { + if (GetLastError() == ERROR_NO_DATA) + return ERROR_NO_DATA; + + WLog_ERR(TAG, "channel connection closed"); + return ERROR_INTERNAL_ERROR; + } + + /* Parse header */ + if ((status = rail_read_pdu_header(s, &orderType, &orderLength)) != CHANNEL_RC_OK) + { + WLog_ERR(TAG, "rail_read_pdu_header failed with error %" PRIu32 "!", status); + return status; + } + + if (!Stream_EnsureRemainingCapacity(s, orderLength - RAIL_PDU_HEADER_LENGTH)) + { + WLog_ERR(TAG, + "Stream_EnsureRemainingCapacity failed, orderLength - RAIL_PDU_HEADER_LENGTH"); + return CHANNEL_RC_NO_MEMORY; + } + + /* Read body */ + if (!WTSVirtualChannelRead(priv->rail_channel, 0, Stream_Pointer(s), + orderLength - RAIL_PDU_HEADER_LENGTH, &bytesReturned)) + { + if (GetLastError() == ERROR_NO_DATA) + return ERROR_NO_DATA; + + WLog_ERR(TAG, "channel connection closed"); + return ERROR_INTERNAL_ERROR; + } + + WLog_DBG(TAG, "Received %s PDU, length:%" PRIu16 "", + rail_get_order_type_string_full(orderType, buffer, sizeof(buffer)), orderLength); + + switch (orderType) + { + case TS_RAIL_ORDER_HANDSHAKE: + { + RAIL_HANDSHAKE_ORDER handshake; + return rail_recv_client_handshake_order(context, &handshake, s); + } + + case TS_RAIL_ORDER_CLIENTSTATUS: + { + RAIL_CLIENT_STATUS_ORDER clientStatus; + return rail_recv_client_client_status_order(context, &clientStatus, s); + } + + case TS_RAIL_ORDER_EXEC: + return rail_recv_client_exec_order(context, s); + + case TS_RAIL_ORDER_SYSPARAM: + { + RAIL_SYSPARAM_ORDER sysparam = { 0 }; + return rail_recv_client_sysparam_order(context, &sysparam, s); + } + + case TS_RAIL_ORDER_ACTIVATE: + { + RAIL_ACTIVATE_ORDER activate; + return rail_recv_client_activate_order(context, &activate, s); + } + + case TS_RAIL_ORDER_SYSMENU: + { + RAIL_SYSMENU_ORDER sysmenu; + return rail_recv_client_sysmenu_order(context, &sysmenu, s); + } + + case TS_RAIL_ORDER_SYSCOMMAND: + { + RAIL_SYSCOMMAND_ORDER syscommand; + return rail_recv_client_syscommand_order(context, &syscommand, s); + } + + case TS_RAIL_ORDER_NOTIFY_EVENT: + { + RAIL_NOTIFY_EVENT_ORDER notifyEvent; + return rail_recv_client_notify_event_order(context, ¬ifyEvent, s); + } + + case TS_RAIL_ORDER_WINDOWMOVE: + { + RAIL_WINDOW_MOVE_ORDER windowMove; + return rail_recv_client_window_move_order(context, &windowMove, s); + } + + case TS_RAIL_ORDER_SNAP_ARRANGE: + { + RAIL_SNAP_ARRANGE snapArrange; + return rail_recv_client_snap_arrange_order(context, &snapArrange, s); + } + + case TS_RAIL_ORDER_GET_APPID_REQ: + { + RAIL_GET_APPID_REQ_ORDER getAppidReq; + return rail_recv_client_get_appid_req_order(context, &getAppidReq, s); + } + + case TS_RAIL_ORDER_LANGBARINFO: + { + RAIL_LANGBAR_INFO_ORDER langbarInfo; + return rail_recv_client_langbar_info_order(context, &langbarInfo, s); + } + + case TS_RAIL_ORDER_LANGUAGEIMEINFO: + { + RAIL_LANGUAGEIME_INFO_ORDER languageImeInfo; + return rail_recv_client_language_ime_info_order(context, &languageImeInfo, s); + } + + case TS_RAIL_ORDER_COMPARTMENTINFO: + { + RAIL_COMPARTMENT_INFO_ORDER compartmentInfo; + return rail_recv_client_compartment_info(context, &compartmentInfo, s); + } + + case TS_RAIL_ORDER_CLOAK: + { + RAIL_CLOAK cloak; + return rail_recv_client_cloak_order(context, &cloak, s); + } + + case TS_RAIL_ORDER_TEXTSCALEINFO: + { + return rail_recv_client_text_scale_order(context, s); + } + + case TS_RAIL_ORDER_CARETBLINKINFO: + { + return rail_recv_client_caret_blink(context, s); + } + + default: + WLog_ERR(TAG, "Unknown RAIL PDU order received."); + return ERROR_INVALID_DATA; + } +} |