Leaked source code of windows server 2003
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/*************************************************************************
*
* wsxmgr.c
*
* Routines to manage Window Station extensions.
*
* Copyright Microsoft Corporation, 1998
*
*
*************************************************************************/
#include "precomp.h"
#pragma hdrstop
/*=============================================================================
== Macros
=============================================================================*/
/*=============================================================================
== External procedures defined
=============================================================================*/
PWSEXTENSION FindWinStationExtensionDll( PWSTR pszWsxDll, ULONG WdFlag );
/*=============================================================================
== Local Data
=============================================================================*/
RTL_CRITICAL_SECTION WsxListLock;
RTL_CRITICAL_SECTION WsxLoadLock;
LIST_ENTRY WsxListHead;
/*=============================================================================
== External Data
=============================================================================*/
extern LIST_ENTRY WinStationListHead; // protected by WinStationListLock
/*******************************************************************************
*
* WsxInit
*
*
*
* ENTRY:
* nothing
*
* EXIT:
* STATUS_SUCCESS on success, the return value of InitCritSec on failure.
*
******************************************************************************/
NTSTATUS
WsxInit( VOID )
{
NTSTATUS Status;
InitializeListHead( &WsxListHead );
Status = RtlInitializeCriticalSection( &WsxLoadLock );
if (Status == STATUS_SUCCESS) {
Status = RtlInitializeCriticalSection( &WsxListLock );
if (Status != STATUS_SUCCESS) {
RtlDeleteCriticalSection(&WsxLoadLock);
}
}
return(Status);
}
/*******************************************************************************
*
* _WinStationEnumCallback
*
*
*
* ENTRY:
* nothing
*
* EXIT:
* nothing
*
******************************************************************************/
VOID
_WinStationEnumCallback(PCALLBACK_PRIMARY pPrimaryCallback,
PCALLBACK_COMPLETION pCompletionCallback,
PVOID pWsxEnum
)
{
PLIST_ENTRY Head, Next;
PWINSTATION pWinStation;
RtlEnterCriticalSection( &WinStationListLock );
// call primary if valid
if ( pPrimaryCallback ) {
Head = &WinStationListHead;
for ( Next = Head->Flink; Next != Head; Next = Next->Flink ) {
pWinStation = CONTAINING_RECORD( Next, WINSTATION, Links );
if ( pWinStation->pWsx ) {
pPrimaryCallback( pWinStation->pWsx->hInstance, pWinStation->pWsxContext, pWsxEnum );
} else {
pPrimaryCallback( NULL, pWinStation->pWsxContext, pWsxEnum );
}
}
}
// call completion if valid
if ( pCompletionCallback ) {
pCompletionCallback( pWsxEnum );
}
RtlLeaveCriticalSection( &WinStationListLock );
}
/*******************************************************************************
*
* _SendWinStationMessage
*
*
*
* ENTRY:
* nothing
*
* EXIT:
* nothing
*
******************************************************************************/
NTSTATUS
_SendWinStationMessage(
ULONG LogonId,
PWCHAR pTitle,
PWCHAR pMessage,
ULONG MessageTimeout )
{
PWINSTATION pWinStation;
WINSTATION_APIMSG msg;
NTSTATUS Status;
/*
* Find and lock the WinStation struct for the specified LogonId
*/
pWinStation = FindWinStationById( LogonId, FALSE );
if ( pWinStation == NULL ) {
return( STATUS_CTX_WINSTATION_NOT_FOUND );
}
/*
* Build message
*/
msg.u.SendMessage.pTitle = pTitle;
msg.u.SendMessage.TitleLength = wcslen( pTitle ) * sizeof(WCHAR);
msg.u.SendMessage.pMessage = pMessage;
msg.u.SendMessage.MessageLength = wcslen( pMessage ) * sizeof(WCHAR);
msg.u.SendMessage.Style = MB_OK | MB_ICONSTOP;
msg.u.SendMessage.Timeout = MessageTimeout;
msg.u.SendMessage.Response = 0;
msg.u.SendMessage.DoNotWait = TRUE;
msg.u.SendMessage.DoNotWaitForCorrectDesktop = FALSE;
msg.ApiNumber = SMWinStationDoMessage;
// since we not going to wait for the message delievary, we dont care for status.
msg.u.SendMessage.pStatus = NULL;
msg.u.SendMessage.pResponse = NULL;
msg.u.SendMessage.hEvent = NULL;
/*
* Send message
*/
Status = SendWinStationCommand( pWinStation, &msg, 0 );
/*
* Done with winstation
*/
ReleaseWinStation( pWinStation );
return( Status );
}
/*******************************************************************************
*
* _GetContextForLogonId
*
*
*
* ENTRY:
* nothing
*
* EXIT:
* nothing
*
******************************************************************************/
NTSTATUS
_GetContextForLogonId(
ULONG LogonId,
PVOID * ppWsxContext
)
{
PWINSTATION pWinStation;
WINSTATION_APIMSG msg;
/*
* Find and lock the WinStation struct for the specified LogonId
*/
pWinStation = FindWinStationById( LogonId, FALSE );
if ( pWinStation == NULL ) {
*ppWsxContext = NULL;
return( STATUS_CTX_WINSTATION_NOT_FOUND );
}
/*
* Return context
*/
*ppWsxContext = pWinStation->pWsxContext;
/*
* Done with winstation
*/
ReleaseWinStation( pWinStation );
return( STATUS_SUCCESS );
}
/*******************************************************************************
*
* _LoadWsxDll
*
* Load and Initialize Window Station Extension DLL.
*
* ENTRY:
* nothing
*
* EXIT:
* nothing
*
******************************************************************************/
PWSEXTENSION
_LoadWsxDll( PWSTR pszWsxDll )
{
PWSEXTENSION pWsx;
HINSTANCE hDllInstance;
if ( pszWsxDll == NULL || *pszWsxDll == UNICODE_NULL )
return( NULL );
hDllInstance = LoadLibrary(pszWsxDll);
if (!hDllInstance) {
TRACE((hTrace,TC_ICASRV,TT_ERROR,"TERMSRV: Error %d, _LoadWsxDll(%s) failed\n",
GetLastError(), pszWsxDll));
return(NULL);
}
pWsx = MemAlloc( sizeof(WSEXTENSION) );
if ( !pWsx ) {
return(NULL);
}
RtlZeroMemory( pWsx, sizeof(WSEXTENSION) );
RtlCopyMemory( pWsx->WsxDLL, pszWsxDll, sizeof(pWsx->WsxDLL) );
pWsx->hInstance = hDllInstance;
/*
* Initialize Dll support functions
*/
pWsx->pWsxInitialize = (PWSX_INITIALIZE) GetProcAddress(hDllInstance, WSX_INITIALIZE);
if (!pWsx->pWsxInitialize) {
TRACE((hTrace,TC_ICASRV,TT_ERROR,"TERMSRV: Could not find pWsxInitialize entry point\n"));
goto LoadWsx_ErrorReturn;
}
/*
* Client Drive Mapping Extensions
*/
pWsx->pWsxCdmConnect = (PWSX_CDMCONNECT)
GetProcAddress(hDllInstance, WSX_CDMCONNECT);
pWsx->pWsxCdmDisconnect = (PWSX_CDMDISCONNECT)
GetProcAddress(hDllInstance, WSX_CDMDISCONNECT);
pWsx->pWsxVerifyClientLicense = (PWSX_VERIFYCLIENTLICENSE)
GetProcAddress(hDllInstance, WSX_VERIFYCLIENTLICENSE);
pWsx->pWsxQueryLicense = (PWSX_QUERYLICENSE)
GetProcAddress(hDllInstance, WSX_QUERYLICENSE);
pWsx->pWsxGetLicense = (PWSX_GETLICENSE)
GetProcAddress(hDllInstance, WSX_GETLICENSE);
pWsx->pWsxWinStationLogonAnnoyance = (PWSX_WINSTATIONLOGONANNOYANCE)
GetProcAddress(hDllInstance, WSX_WINSTATIONLOGONANNOYANCE);
pWsx->pWsxWinStationGenerateLicense = (PWSX_WINSTATIONGENERATELICENSE)
GetProcAddress(hDllInstance, WSX_WINSTATIONGENERATELICENSE);
pWsx->pWsxWinStationInstallLicense = (PWSX_WINSTATIONINSTALLLICENSE)
GetProcAddress(hDllInstance, WSX_WINSTATIONINSTALLLICENSE);
pWsx->pWsxWinStationEnumerateLicenses = (PWSX_WINSTATIONENUMERATELICENSES)
GetProcAddress(hDllInstance, WSX_WINSTATIONENUMERATELICENSES);
pWsx->pWsxWinStationActivateLicense = (PWSX_WINSTATIONACTIVATELICENSE)
GetProcAddress(hDllInstance, WSX_WINSTATIONACTIVATELICENSE);
pWsx->pWsxWinStationRemoveLicense = (PWSX_WINSTATIONREMOVELICENSE)
GetProcAddress(hDllInstance, WSX_WINSTATIONREMOVELICENSE);
pWsx->pWsxWinStationSetPoolCount = (PWSX_WINSTATIONSETPOOLCOUNT)
GetProcAddress(hDllInstance, WSX_WINSTATIONSETPOOLCOUNT);
pWsx->pWsxWinStationQueryUpdateRequired = (PWSX_WINSTATIONQUERYUPDATEREQUIRED)
GetProcAddress(hDllInstance, WSX_WINSTATIONQUERYUPDATEREQUIRED);
pWsx->pWsxWinStationAnnoyanceThread = (PWSX_WINSTATIONANNOYANCETHREAD)
GetProcAddress(hDllInstance, WSX_WINSTATIONANNOYANCETHREAD);
pWsx->pWsxInitializeClientData = (PWSX_INITIALIZECLIENTDATA)
GetProcAddress(hDllInstance, WSX_INITIALIZECLIENTDATA);
pWsx->pWsxInitializeUserConfig = (PWSX_INITIALIZEUSERCONFIG)
GetProcAddress(hDllInstance, WSX_INITIALIZEUSERCONFIG);
pWsx->pWsxConvertPublishedApp = (PWSX_CONVERTPUBLISHEDAPP)
GetProcAddress(hDllInstance, WSX_CONVERTPUBLISHEDAPP);
pWsx->pWsxWinStationInitialize = (PWSX_WINSTATIONINITIALIZE)
GetProcAddress(hDllInstance, WSX_WINSTATIONINITIALIZE);
pWsx->pWsxWinStationReInitialize = (PWSX_WINSTATIONREINITIALIZE)
GetProcAddress(hDllInstance, WSX_WINSTATIONREINITIALIZE);
pWsx->pWsxWinStationRundown = (PWSX_WINSTATIONRUNDOWN)
GetProcAddress(hDllInstance, WSX_WINSTATIONRUNDOWN);
pWsx->pWsxDuplicateContext = (PWSX_DUPLICATECONTEXT)
GetProcAddress(hDllInstance, WSX_DUPLICATECONTEXT);
pWsx->pWsxCopyContext = (PWSX_COPYCONTEXT)
GetProcAddress(hDllInstance, WSX_COPYCONTEXT);
pWsx->pWsxClearContext = (PWSX_CLEARCONTEXT)
GetProcAddress(hDllInstance, WSX_CLEARCONTEXT);
pWsx->pWsxVirtualChannelSecurity = (PWSX_VIRTUALCHANNELSECURITY)
GetProcAddress(hDllInstance, WSX_VIRTUALCHANNELSECURITY);
pWsx->pWsxIcaStackIoControl = (PWSX_ICASTACKIOCONTROL)
GetProcAddress(hDllInstance, WSX_ICASTACKIOCONTROL);
pWsx->pWsxBrokenConnection = (PWSX_BROKENCONNECTION)
GetProcAddress(hDllInstance, WSX_BROKENCONNECTION);
pWsx->pWsxLogonNotify = (PWSX_LOGONNOTIFY)
GetProcAddress(hDllInstance, WSX_LOGONNOTIFY);
pWsx->pWsxSetErrorInfo = (PWSX_SETERRORINFO)
GetProcAddress(hDllInstance, WSX_SETERRORINFO);
pWsx->pWsxSendAutoReconnectStatus = (PWSX_SENDAUTORECONNECTSTATUS)
GetProcAddress(hDllInstance, WSX_SENDAUTORECONNECTSTATUS);
pWsx->pWsxEscape = (PWSX_ESCAPE)
GetProcAddress(hDllInstance, WSX_ESCAPE);
return(pWsx);
LoadWsx_ErrorReturn:
LocalFree(pWsx);
return(NULL);
}
/*******************************************************************************
*
* FindWinStationExtensionDll
*
* Perform initialization of Window Station Extensions
*
* ENTRY:
* nothing
*
* EXIT:
* nothing
*
******************************************************************************/
PWSEXTENSION
FindWinStationExtensionDll( PWSTR pszWsxDll, ULONG WdFlag )
{
PLIST_ENTRY Head, Next;
PWSEXTENSION pWsx = NULL;
ICASRVPROCADDR IcaSrvProcAddr;
RtlEnterCriticalSection( &WsxLoadLock );
RtlEnterCriticalSection( &WsxListLock );
Head = &WsxListHead;
for ( Next = Head->Flink; Next != Head; Next = Next->Flink ) {
pWsx = CONTAINING_RECORD( Next, WSEXTENSION, Links );
if ( !_wcsicmp( pszWsxDll, pWsx->WsxDLL ) ){
break;
}
}
RtlLeaveCriticalSection( &WsxListLock );
if ( Next != Head ) {
RtlLeaveCriticalSection( &WsxLoadLock );
return( pWsx );
}
/*
* Load winstation extensions dll
*/
if ( (pWsx = _LoadWsxDll( pszWsxDll )) != NULL ) {
KdPrintEx((DPFLTR_TERMSRV_ID, DPFLTR_TRACE_LEVEL, "TERMSRV: FindWinStationExtensionDll(%S) succeeded\n", pszWsxDll ));
IcaSrvProcAddr.cbProcAddr =
(ULONG) sizeof(ICASRVPROCADDR);
IcaSrvProcAddr.pNotifySystemEvent =
(PICASRV_NOTIFYSYSTEMEVENT) NotifySystemEvent;
IcaSrvProcAddr.pSendWinStationMessage =
(PICASRV_SENDWINSTATIONMESSAGE) _SendWinStationMessage;
IcaSrvProcAddr.pGetContextForLogonId =
(PICASRV_GETCONTEXTFORLOGONID) _GetContextForLogonId;
IcaSrvProcAddr.pWinStationEnumCallBack =
(PICASRV_WINSTATIONENUMCALLBACK) _WinStationEnumCallback;
// initialize dll support procs
if ( pWsx->pWsxInitialize( &IcaSrvProcAddr ) ) {
RtlEnterCriticalSection( &WsxListLock );
InsertHeadList( &WsxListHead, &pWsx->Links );
RtlLeaveCriticalSection( &WsxListLock );
} else {
LocalFree( pWsx );
pWsx = NULL;
KdPrintEx((DPFLTR_TERMSRV_ID, DPFLTR_ERROR_LEVEL, "TERMSRV: FindWinStationExtensionDll(%S) failed\n", pszWsxDll ));
}
}
else {
KdPrintEx(( DPFLTR_TERMSRV_ID, DPFLTR_ERROR_LEVEL, "TERMSRV: FindWinStationExtensionDll(%S) failed\n", pszWsxDll ));
}
RtlLeaveCriticalSection( &WsxLoadLock );
/*
* Create the thread which will monitor the condition of the
* WinFrame Licenses and if necessary send Annoyance Messages.
*/
if ( pWsx && pWsx->pWsxWinStationAnnoyanceThread ) {
DWORD ThreadId;
HANDLE ThreadHandle;
ThreadHandle = CreateThread( NULL,
0,
(LPTHREAD_START_ROUTINE)pWsx->pWsxWinStationAnnoyanceThread,
NULL,
THREAD_SET_INFORMATION,
&ThreadId );
if(ThreadHandle )
NtClose( ThreadHandle );
}
return( pWsx );
}
/*******************************************************************************
*
* WsxStackIoControl
*
* Callback routine called from ICAAPI.DLL to issue StackIoControl calls.
*
* ENTRY:
* nothing
*
* EXIT:
* nothing
*
******************************************************************************/
NTSTATUS
WsxStackIoControl(
IN PVOID pContext,
IN HANDLE pStack,
IN ULONG IoControlCode,
IN PVOID pInBuffer,
IN ULONG InBufferSize,
OUT PVOID pOutBuffer,
IN ULONG OutBufferSize,
OUT PULONG pBytesReturned )
{
PWINSTATION pWinStation = (PWINSTATION)pContext;
NTSTATUS Status;
TRACE((hTrace, TC_ICASRV, TT_API1,
"TERMSRV: Enter WsxIcaIoControl, IoControlCode=%d\n",
(IoControlCode >> 2) & 0xfff));
if ( pWinStation &&
pWinStation->pWsx &&
pWinStation->pWsx->pWsxIcaStackIoControl ) {
Status = pWinStation->pWsx->pWsxIcaStackIoControl(
pWinStation->pWsxContext,
pWinStation->hIca,
pStack,
IoControlCode,
pInBuffer,
InBufferSize,
pOutBuffer,
OutBufferSize,
pBytesReturned );
} else {
Status = IcaStackIoControl(
pStack,
IoControlCode,
pInBuffer,
InBufferSize,
pOutBuffer,
OutBufferSize,
pBytesReturned );
}
return( Status );
}