/**
* WinPR: Windows Portable Runtime
* Windows Terminal Services API
*
* Copyright 2013-2014 Marc-Andre Moreau <marcandre.moreau@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.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <winpr/crt.h>
#include <winpr/io.h>
#include <winpr/nt.h>
#include <winpr/library.h>
#include <winpr/wtsapi.h>
#include "wtsapi_win32.h"
#include "../log.h"
#define WTSAPI_CHANNEL_MAGIC 0x44484356
#define TAG WINPR_TAG("wtsapi")
struct _WTSAPI_CHANNEL
{
UINT32 magic;
HANDLE hServer;
DWORD SessionId;
HANDLE hFile;
HANDLE hEvent;
char* VirtualName;
DWORD flags;
BYTE* chunk;
BOOL dynamic;
BOOL readSync;
BOOL readAsync;
BOOL readDone;
UINT32 readSize;
UINT32 readOffset;
BYTE* readBuffer;
BOOL showProtocol;
BOOL waitObjectMode;
OVERLAPPED overlapped;
CHANNEL_PDU_HEADER* header;
};
typedef struct _WTSAPI_CHANNEL WTSAPI_CHANNEL;
static BOOL g_Initialized = FALSE;
static HMODULE g_WinStaModule = NULL;
typedef HANDLE(WINAPI* fnWinStationVirtualOpen)(HANDLE hServer, DWORD SessionId,
LPSTR pVirtualName);
typedef HANDLE(WINAPI* fnWinStationVirtualOpenEx)(HANDLE hServer, DWORD SessionId,
LPSTR pVirtualName, DWORD flags);
static fnWinStationVirtualOpen pfnWinStationVirtualOpen = NULL;
static fnWinStationVirtualOpenEx pfnWinStationVirtualOpenEx = NULL;
BOOL WINAPI Win32_WTSVirtualChannelClose(HANDLE hChannel);
/**
* NOTE !!
* An application using the WinPR wtsapi frees memory via WTSFreeMemory, which
* might be mapped to Win32_WTSFreeMemory. Latter does not know if the passed
* pointer was allocated by a function in wtsapi32.dll or in some internal
* code below. The WTSFreeMemory implementation in all Windows wtsapi32.dll
* versions up to Windows 10 uses LocalFree since all its allocating functions
* use LocalAlloc() internally.
* For that reason we also have to use LocalAlloc() for any memory returned by
* our WinPR wtsapi functions.
*
* To be safe we only use the _wts_malloc, _wts_calloc, _wts_free wrappers
* for memory managment the code below.
*/
static void* _wts_malloc(size_t size)
{
#ifdef _UWP
return malloc(size);
#else
return (PVOID)LocalAlloc(LMEM_FIXED, size);
#endif
}
static void* _wts_calloc(size_t nmemb, size_t size)
{
#ifdef _UWP
return calloc(nmemb, size);
#else
return (PVOID)LocalAlloc(LMEM_FIXED | LMEM_ZEROINIT, nmemb * size);
#endif
}
static void _wts_free(void* ptr)
{
#ifdef _UWP
free(ptr);
#else
LocalFree((HLOCAL)ptr);
#endif
}
BOOL Win32_WTSVirtualChannelReadAsync(WTSAPI_CHANNEL* pChannel)
{
BOOL status = TRUE;
DWORD numBytes = 0;
if (pChannel->readAsync)
return TRUE;
ZeroMemory(&(pChannel->overlapped), sizeof(OVERLAPPED));
pChannel->overlapped.hEvent = pChannel->hEvent;
ResetEvent(pChannel->hEvent);
if (pChannel->showProtocol)
{
ZeroMemory(pChannel->header, sizeof(CHANNEL_PDU_HEADER));
status = ReadFile(pChannel->hFile, pChannel->header, sizeof(CHANNEL_PDU_HEADER), &numBytes,
&(pChannel->overlapped));
}
else
{
status = ReadFile(pChannel->hFile, pChannel->chunk, CHANNEL_CHUNK_LENGTH, &numBytes,
&(pChannel->overlapped));
if (status)
{
pChannel->readOffset = 0;
pChannel->header->length = numBytes;
pChannel->readDone = TRUE;
SetEvent(pChannel->hEvent);
return TRUE;
}
}
if (status)
{
WLog_ERR(TAG, "Unexpected ReadFile status: %" PRId32 " numBytes: %" PRIu32 "", status,
numBytes);
return FALSE; /* ReadFile should return FALSE and set ERROR_IO_PENDING */
}
if (GetLastError() != ERROR_IO_PENDING)
{
WLog_ERR(TAG, "ReadFile: GetLastError() = %" PRIu32 "", GetLastError());
return FALSE;
}
pChannel->readAsync = TRUE;
return TRUE;
}
HANDLE WINAPI Win32_WTSVirtualChannelOpen_Internal(HANDLE hServer, DWORD SessionId,
LPSTR pVirtualName, DWORD flags)
{
HANDLE hFile;
HANDLE hChannel;
WTSAPI_CHANNEL* pChannel;
size_t virtualNameLen;
virtualNameLen = pVirtualName ? strlen(pVirtualName) : 0;
if (!virtualNameLen)
{
SetLastError(ERROR_INVALID_PARAMETER);
return NULL;
}
if (!pfnWinStationVirtualOpenEx)
{
SetLastError(ERROR_INVALID_FUNCTION);
return NULL;
}
hFile = pfnWinStationVirtualOpenEx(hServer, SessionId, pVirtualName, flags);
if (!hFile)
return NULL;
pChannel = (WTSAPI_CHANNEL*)_wts_calloc(1, sizeof(WTSAPI_CHANNEL));
if (!pChannel)
{
CloseHandle(hFile);
SetLastError(ERROR_NOT_ENOUGH_MEMORY);
return NULL;
}
hChannel = (HANDLE)pChannel;
pChannel->magic = WTSAPI_CHANNEL_MAGIC;
pChannel->hServer = hServer;
pChannel->SessionId = SessionId;
pChannel->hFile = hFile;
pChannel->VirtualName = _wts_calloc(1, virtualNameLen + 1);
if (!pChannel->VirtualName)
{
CloseHandle(hFile);
SetLastError(ERROR_NOT_ENOUGH_MEMORY);
_wts_free(pChannel);
return NULL;
}
memcpy(pChannel->VirtualName, pVirtualName, virtualNameLen);
pChannel->flags = flags;
pChannel->dynamic = (flags & WTS_CHANNEL_OPTION_DYNAMIC) ? TRUE : FALSE;
pChannel->showProtocol = pChannel->dynamic;
pChannel->readSize = CHANNEL_PDU_LENGTH;
pChannel->readBuffer = (BYTE*)_wts_malloc(pChannel->readSize);
pChannel->header = (CHANNEL_PDU_HEADER*)pChannel->readBuffer;
pChannel->chunk = &(pChannel->readBuffer[sizeof(CHANNEL_PDU_HEADER)]);
pChannel->hEvent = CreateEvent(NULL, TRUE, FALSE, NULL);
pChannel->overlapped.hEvent = pChannel->hEvent;
if (!pChannel->hEvent || !pChannel->VirtualName || !pChannel->readBuffer)
{
Win32_WTSVirtualChannelClose(hChannel);
SetLastError(ERROR_NOT_ENOUGH_MEMORY);
return NULL;
}
return hChannel;
}
HANDLE WINAPI Win32_WTSVirtualChannelOpen(HANDLE hServer, DWORD SessionId, LPSTR pVirtualName)
{
return Win32_WTSVirtualChannelOpen_Internal(hServer, SessionId, pVirtualName, 0);
}
HANDLE WINAPI Win32_WTSVirtualChannelOpenEx(DWORD SessionId, LPSTR pVirtualName, DWORD flags)
{
return Win32_WTSVirtualChannelOpen_Internal(0, SessionId, pVirtualName, flags);
}
BOOL WINAPI Win32_WTSVirtualChannelClose(HANDLE hChannel)
{
BOOL status = TRUE;
WTSAPI_CHANNEL* pChannel = (WTSAPI_CHANNEL*)hChannel;
if (!pChannel || (pChannel->magic != WTSAPI_CHANNEL_MAGIC))
{
SetLastError(ERROR_INVALID_PARAMETER);
return FALSE;
}
if (pChannel->hFile)
{
if (pChannel->readAsync)
{
CancelIo(pChannel->hFile);
pChannel->readAsync = FALSE;
}
status = CloseHandle(pChannel->hFile);
pChannel->hFile = NULL;
}
if (pChannel->hEvent)
{
CloseHandle(pChannel->hEvent);
pChannel->hEvent = NULL;
}
if (pChannel->VirtualName)
{
_wts_free(pChannel->VirtualName);
pChannel->VirtualName = NULL;
}
if (pChannel->readBuffer)
{
_wts_free(pChannel->readBuffer);
pChannel->readBuffer = NULL;
}
pChannel->magic = 0;
_wts_free(pChannel);
return status;
}
BOOL WINAPI Win32_WTSVirtualChannelRead_Static(WTSAPI_CHANNEL* pChannel, DWORD dwMilliseconds,
LPVOID lpBuffer, DWORD nNumberOfBytesToRead,
LPDWORD lpNumberOfBytesTransferred)
{
if (pChannel->readDone)
{
DWORD numBytesRead = 0;
DWORD numBytesToRead = 0;
*lpNumberOfBytesTransferred = 0;
numBytesToRead = nNumberOfBytesToRead;
if (numBytesToRead > (pChannel->header->length - pChannel->readOffset))
numBytesToRead = (pChannel->header->length - pChannel->readOffset);
CopyMemory(lpBuffer, &(pChannel->chunk[pChannel->readOffset]), numBytesToRead);
*lpNumberOfBytesTransferred += numBytesToRead;
pChannel->readOffset += numBytesToRead;
if (pChannel->readOffset != pChannel->header->length)
{
SetLastError(ERROR_MORE_DATA);
return FALSE;
}
else
{
pChannel->readDone = FALSE;
Win32_WTSVirtualChannelReadAsync(pChannel);
}
return TRUE;
}
else if (pChannel->readSync)
{
BOOL bSuccess;
OVERLAPPED overlapped;
DWORD numBytesRead = 0;
DWORD numBytesToRead = 0;
*lpNumberOfBytesTransferred = 0;
ZeroMemory(&overlapped, sizeof(OVERLAPPED));
numBytesToRead = nNumberOfBytesToRead;
if (numBytesToRead > (pChannel->header->length - pChannel->readOffset))
numBytesToRead = (pChannel->header->length - pChannel->readOffset);
if (ReadFile(pChannel->hFile, lpBuffer, numBytesToRead, &numBytesRead, &overlapped))
{
*lpNumberOfBytesTransferred += numBytesRead;
pChannel->readOffset += numBytesRead;
if (pChannel->readOffset != pChannel->header->length)
{
SetLastError(ERROR_MORE_DATA);
return FALSE;
}
pChannel->readSync = FALSE;
Win32_WTSVirtualChannelReadAsync(pChannel);
return TRUE;
}
if (GetLastError() != ERROR_IO_PENDING)
return FALSE;
bSuccess = GetOverlappedResult(pChannel->hFile, &overlapped, &numBytesRead, TRUE);
if (!bSuccess)
return FALSE;
*lpNumberOfBytesTransferred += numBytesRead;
pChannel->readOffset += numBytesRead;
if (pChannel->readOffset != pChannel->header->length)
{
SetLastError(ERROR_MORE_DATA);
return FALSE;
}
pChannel->readSync = FALSE;
Win32_WTSVirtualChannelReadAsync(pChannel);
return TRUE;
}
else if (pChannel->readAsync)
{
BOOL bSuccess;
DWORD numBytesRead = 0;
DWORD numBytesToRead = 0;
*lpNumberOfBytesTransferred = 0;
if (WaitForSingleObject(pChannel->hEvent, dwMilliseconds) != WAIT_TIMEOUT)
{
bSuccess =
GetOverlappedResult(pChannel->hFile, &(pChannel->overlapped), &numBytesRead, TRUE);
pChannel->readOffset = 0;
pChannel->header->length = numBytesRead;
if (!bSuccess && (GetLastError() != ERROR_MORE_DATA))
return FALSE;
numBytesToRead = nNumberOfBytesToRead;
if (numBytesRead < numBytesToRead)
{
numBytesToRead = numBytesRead;
nNumberOfBytesToRead = numBytesRead;
}
CopyMemory(lpBuffer, pChannel->chunk, numBytesToRead);
*lpNumberOfBytesTransferred += numBytesToRead;
lpBuffer = (BYTE*)lpBuffer + numBytesToRead;
nNumberOfBytesToRead -= numBytesToRead;
pChannel->readOffset += numBytesToRead;
pChannel->readAsync = FALSE;
if (!nNumberOfBytesToRead)
{
Win32_WTSVirtualChannelReadAsync(pChannel);
return TRUE;
}
pChannel->readSync = TRUE;
numBytesRead = 0;
bSuccess = Win32_WTSVirtualChannelRead_Static(pChannel, dwMilliseconds, lpBuffer,
nNumberOfBytesToRead, &numBytesRead);
*lpNumberOfBytesTransferred += numBytesRead;
return bSuccess;
}
else
{
SetLastError(ERROR_IO_INCOMPLETE);
return FALSE;
}
}
return FALSE;
}
BOOL WINAPI Win32_WTSVirtualChannelRead_Dynamic(WTSAPI_CHANNEL* pChannel, DWORD dwMilliseconds,
LPVOID lpBuffer, DWORD nNumberOfBytesToRead,
LPDWORD lpNumberOfBytesTransferred)
{
if (pChannel->readSync)
{
BOOL bSuccess;
OVERLAPPED overlapped;
DWORD numBytesRead = 0;
DWORD numBytesToRead = 0;
*lpNumberOfBytesTransferred = 0;
ZeroMemory(&overlapped, sizeof(OVERLAPPED));
numBytesToRead = nNumberOfBytesToRead;
if (numBytesToRead > (pChannel->header->length - pChannel->readOffset))
numBytesToRead = (pChannel->header->length - pChannel->readOffset);
if (ReadFile(pChannel->hFile, lpBuffer, numBytesToRead, &numBytesRead, &overlapped))
{
*lpNumberOfBytesTransferred += numBytesRead;
pChannel->readOffset += numBytesRead;
if (pChannel->readOffset != pChannel->header->length)
{
SetLastError(ERROR_MORE_DATA);
return FALSE;
}
pChannel->readSync = FALSE;
Win32_WTSVirtualChannelReadAsync(pChannel);
return TRUE;
}
if (GetLastError() != ERROR_IO_PENDING)
return FALSE;
bSuccess = GetOverlappedResult(pChannel->hFile, &overlapped, &numBytesRead, TRUE);
if (!bSuccess)
return FALSE;
*lpNumberOfBytesTransferred += numBytesRead;
pChannel->readOffset += numBytesRead;
if (pChannel->readOffset != pChannel->header->length)
{
SetLastError(ERROR_MORE_DATA);
return FALSE;
}
pChannel->readSync = FALSE;
Win32_WTSVirtualChannelReadAsync(pChannel);
return TRUE;
}
else if (pChannel->readAsync)
{
BOOL bSuccess;
DWORD numBytesRead = 0;
*lpNumberOfBytesTransferred = 0;
if (WaitForSingleObject(pChannel->hEvent, dwMilliseconds) != WAIT_TIMEOUT)
{
bSuccess =
GetOverlappedResult(pChannel->hFile, &(pChannel->overlapped), &numBytesRead, TRUE);
if (pChannel->showProtocol)
{
if (numBytesRead != sizeof(CHANNEL_PDU_HEADER))
return FALSE;
if (!bSuccess && (GetLastError() != ERROR_MORE_DATA))
return FALSE;
CopyMemory(lpBuffer, pChannel->header, numBytesRead);
*lpNumberOfBytesTransferred += numBytesRead;
lpBuffer = (BYTE*)lpBuffer + numBytesRead;
nNumberOfBytesToRead -= numBytesRead;
}
pChannel->readAsync = FALSE;
if (!pChannel->header->length)
{
Win32_WTSVirtualChannelReadAsync(pChannel);
return TRUE;
}
pChannel->readSync = TRUE;
pChannel->readOffset = 0;
if (!nNumberOfBytesToRead)
{
SetLastError(ERROR_MORE_DATA);
return FALSE;
}
numBytesRead = 0;
bSuccess = Win32_WTSVirtualChannelRead_Dynamic(pChannel, dwMilliseconds, lpBuffer,
nNumberOfBytesToRead, &numBytesRead);
*lpNumberOfBytesTransferred += numBytesRead;
return bSuccess;
}
else
{
SetLastError(ERROR_IO_INCOMPLETE);
return FALSE;
}
}
return FALSE;
}
BOOL WINAPI Win32_WTSVirtualChannelRead(HANDLE hChannel, DWORD dwMilliseconds, LPVOID lpBuffer,
DWORD nNumberOfBytesToRead,
LPDWORD lpNumberOfBytesTransferred)
{
WTSAPI_CHANNEL* pChannel = (WTSAPI_CHANNEL*)hChannel;
if (!pChannel || (pChannel->magic != WTSAPI_CHANNEL_MAGIC))
{
SetLastError(ERROR_INVALID_PARAMETER);
return FALSE;
}
if (!pChannel->waitObjectMode)
{
OVERLAPPED overlapped;
ZeroMemory(&overlapped, sizeof(OVERLAPPED));
if (ReadFile(pChannel->hFile, lpBuffer, nNumberOfBytesToRead, lpNumberOfBytesTransferred,
&overlapped))
return TRUE;
if (GetLastError() != ERROR_IO_PENDING)
return FALSE;
if (!dwMilliseconds)
{
CancelIo(pChannel->hFile);
*lpNumberOfBytesTransferred = 0;
return TRUE;
}
if (WaitForSingleObject(pChannel->hFile, dwMilliseconds) != WAIT_TIMEOUT)
return GetOverlappedResult(pChannel->hFile, &overlapped, lpNumberOfBytesTransferred,
FALSE);
CancelIo(pChannel->hFile);
SetLastError(ERROR_IO_INCOMPLETE);
return FALSE;
}
else
{
if (pChannel->dynamic)
{
return Win32_WTSVirtualChannelRead_Dynamic(pChannel, dwMilliseconds, lpBuffer,
nNumberOfBytesToRead,
lpNumberOfBytesTransferred);
}
else
{
return Win32_WTSVirtualChannelRead_Static(pChannel, dwMilliseconds, lpBuffer,
nNumberOfBytesToRead,
lpNumberOfBytesTransferred);
}
}
return FALSE;
}
BOOL WINAPI Win32_WTSVirtualChannelWrite(HANDLE hChannel, LPCVOID lpBuffer,
DWORD nNumberOfBytesToWrite,
LPDWORD lpNumberOfBytesTransferred)
{
OVERLAPPED overlapped;
WTSAPI_CHANNEL* pChannel = (WTSAPI_CHANNEL*)hChannel;
if (!pChannel || (pChannel->magic != WTSAPI_CHANNEL_MAGIC))
{
SetLastError(ERROR_INVALID_PARAMETER);
return FALSE;
}
ZeroMemory(&overlapped, sizeof(OVERLAPPED));
if (WriteFile(pChannel->hFile, lpBuffer, nNumberOfBytesToWrite, lpNumberOfBytesTransferred,
&overlapped))
return TRUE;
if (GetLastError() == ERROR_IO_PENDING)
return GetOverlappedResult(pChannel->hFile, &overlapped, lpNumberOfBytesTransferred, TRUE);
return FALSE;
}
#ifndef FILE_DEVICE_TERMSRV
#define FILE_DEVICE_TERMSRV 0x00000038
#endif
BOOL Win32_WTSVirtualChannelPurge_Internal(HANDLE hChannelHandle, ULONG IoControlCode)
{
DWORD error;
NTSTATUS ntstatus;
IO_STATUS_BLOCK ioStatusBlock;
WTSAPI_CHANNEL* pChannel = (WTSAPI_CHANNEL*)hChannelHandle;
if (!pChannel || (pChannel->magic != WTSAPI_CHANNEL_MAGIC))
{
SetLastError(ERROR_INVALID_PARAMETER);
return FALSE;
}
ntstatus =
_NtDeviceIoControlFile(pChannel->hFile, 0, 0, 0, &ioStatusBlock, IoControlCode, 0, 0, 0, 0);
if (ntstatus == STATUS_PENDING)
{
ntstatus = _NtWaitForSingleObject(pChannel->hFile, 0, 0);
if (ntstatus >= 0)
ntstatus = ioStatusBlock.Status;
}
if (ntstatus == STATUS_BUFFER_OVERFLOW)
{
ntstatus = STATUS_BUFFER_TOO_SMALL;
error = _RtlNtStatusToDosError(ntstatus);
SetLastError(error);
return FALSE;
}
if (ntstatus < 0)
{
error = _RtlNtStatusToDosError(ntstatus);
SetLastError(error);
return FALSE;
}
return TRUE;
}
BOOL WINAPI Win32_WTSVirtualChannelPurgeInput(HANDLE hChannelHandle)
{
return Win32_WTSVirtualChannelPurge_Internal(hChannelHandle,
(FILE_DEVICE_TERMSRV << 16) | 0x0107);
}
BOOL WINAPI Win32_WTSVirtualChannelPurgeOutput(HANDLE hChannelHandle)
{
return Win32_WTSVirtualChannelPurge_Internal(hChannelHandle,
(FILE_DEVICE_TERMSRV << 16) | 0x010B);
}
BOOL WINAPI Win32_WTSVirtualChannelQuery(HANDLE hChannelHandle, WTS_VIRTUAL_CLASS WtsVirtualClass,
PVOID* ppBuffer, DWORD* pBytesReturned)
{
WTSAPI_CHANNEL* pChannel = (WTSAPI_CHANNEL*)hChannelHandle;
if (!pChannel || (pChannel->magic != WTSAPI_CHANNEL_MAGIC))
{
SetLastError(ERROR_INVALID_PARAMETER);
return FALSE;
}
if (WtsVirtualClass == WTSVirtualClientData)
{
SetLastError(ERROR_INVALID_PARAMETER);
return FALSE;
}
else if (WtsVirtualClass == WTSVirtualFileHandle)
{
*pBytesReturned = sizeof(HANDLE);
*ppBuffer = _wts_calloc(1, *pBytesReturned);
if (*ppBuffer == NULL)
{
SetLastError(ERROR_NOT_ENOUGH_MEMORY);
return FALSE;
}
CopyMemory(*ppBuffer, &(pChannel->hFile), *pBytesReturned);
}
else if (WtsVirtualClass == WTSVirtualEventHandle)
{
*pBytesReturned = sizeof(HANDLE);
*ppBuffer = _wts_calloc(1, *pBytesReturned);
if (*ppBuffer == NULL)
{
SetLastError(ERROR_NOT_ENOUGH_MEMORY);
return FALSE;
}
CopyMemory(*ppBuffer, &(pChannel->hEvent), *pBytesReturned);
Win32_WTSVirtualChannelReadAsync(pChannel);
pChannel->waitObjectMode = TRUE;
}
else
{
SetLastError(ERROR_INVALID_PARAMETER);
return FALSE;
}
return TRUE;
}
VOID WINAPI Win32_WTSFreeMemory(PVOID pMemory)
{
_wts_free(pMemory);
}
BOOL WINAPI Win32_WTSFreeMemoryExW(WTS_TYPE_CLASS WTSTypeClass, PVOID pMemory,
ULONG NumberOfEntries)
{
return FALSE;
}
BOOL WINAPI Win32_WTSFreeMemoryExA(WTS_TYPE_CLASS WTSTypeClass, PVOID pMemory,
ULONG NumberOfEntries)
{
return WTSFreeMemoryExW(WTSTypeClass, pMemory, NumberOfEntries);
}
BOOL Win32_InitializeWinSta(PWtsApiFunctionTable pWtsApi)
{
g_WinStaModule = LoadLibraryA("winsta.dll");
if (!g_WinStaModule)
return FALSE;
pfnWinStationVirtualOpen =
(fnWinStationVirtualOpen)GetProcAddress(g_WinStaModule, "WinStationVirtualOpen");
pfnWinStationVirtualOpenEx =
(fnWinStationVirtualOpenEx)GetProcAddress(g_WinStaModule, "WinStationVirtualOpenEx");
if (!pfnWinStationVirtualOpen | !pfnWinStationVirtualOpenEx)
return FALSE;
pWtsApi->pVirtualChannelOpen = Win32_WTSVirtualChannelOpen;
pWtsApi->pVirtualChannelOpenEx = Win32_WTSVirtualChannelOpenEx;
pWtsApi->pVirtualChannelClose = Win32_WTSVirtualChannelClose;
pWtsApi->pVirtualChannelRead = Win32_WTSVirtualChannelRead;
pWtsApi->pVirtualChannelWrite = Win32_WTSVirtualChannelWrite;
pWtsApi->pVirtualChannelPurgeInput = Win32_WTSVirtualChannelPurgeInput;
pWtsApi->pVirtualChannelPurgeOutput = Win32_WTSVirtualChannelPurgeOutput;
pWtsApi->pVirtualChannelQuery = Win32_WTSVirtualChannelQuery;
pWtsApi->pFreeMemory = Win32_WTSFreeMemory;
// pWtsApi->pFreeMemoryExW = Win32_WTSFreeMemoryExW;
// pWtsApi->pFreeMemoryExA = Win32_WTSFreeMemoryExA;
return TRUE;
}