mirror of https://github.com/tongzx/nt5src
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
420 lines
12 KiB
420 lines
12 KiB
// --------------------------------------------------------------------------
|
|
// Module Name: UIHost.cpp
|
|
//
|
|
// Copyright (c) 1999-2000, Microsoft Corporation
|
|
//
|
|
// Class to handle the UI host for the logon process. This handles the IPC
|
|
// as well as the creation and monitoring of process death. The process is
|
|
// a restricted SYSTEM context process.
|
|
//
|
|
// History: 1999-09-14 vtan created
|
|
// 2000-02-01 vtan moved from Neptune to Whistler
|
|
// --------------------------------------------------------------------------
|
|
|
|
#include "StandardHeader.h"
|
|
#include "UIHost.h"
|
|
|
|
#include "RegistryResources.h"
|
|
#include "StatusCode.h"
|
|
#include "SystemSettings.h"
|
|
|
|
// --------------------------------------------------------------------------
|
|
// CUIHost::CUIHost
|
|
//
|
|
// Arguments: <none>
|
|
//
|
|
// Returns: <none>
|
|
//
|
|
// Purpose: Constructor for CUIHost. Determine UI host process. If none
|
|
// exists then indicate it.
|
|
//
|
|
// History: 1999-09-14 vtan created
|
|
// --------------------------------------------------------------------------
|
|
|
|
CUIHost::CUIHost (const TCHAR *pszCommandLine) :
|
|
CExternalProcess(),
|
|
_hwndArray(sizeof(HWND)),
|
|
_pBufferAddress(NULL)
|
|
|
|
{
|
|
ExpandCommandLine(pszCommandLine);
|
|
AdjustForDebugging();
|
|
}
|
|
|
|
// --------------------------------------------------------------------------
|
|
// CUIHost::~CUIHost
|
|
//
|
|
// Arguments: <none>
|
|
//
|
|
// Returns: <none>
|
|
//
|
|
// Purpose: Destructor for CUIHost.
|
|
//
|
|
// History: 1999-09-14 vtan created
|
|
// --------------------------------------------------------------------------
|
|
|
|
CUIHost::~CUIHost (void)
|
|
|
|
{
|
|
if (_pBufferAddress != NULL)
|
|
{
|
|
(BOOL)VirtualFreeEx(_hProcess, _pBufferAddress, 0, MEM_DECOMMIT);
|
|
_pBufferAddress = NULL;
|
|
}
|
|
}
|
|
|
|
// --------------------------------------------------------------------------
|
|
// CUIHost::WaitRequired
|
|
//
|
|
// Arguments: <none>
|
|
//
|
|
// Returns: bool
|
|
//
|
|
// Purpose: Returns whether a wait is required for the UI host. This is
|
|
// important when communication with the UI host is required or
|
|
// if the UI host is being debugged.
|
|
//
|
|
// History: 2000-10-05 vtan created
|
|
// --------------------------------------------------------------------------
|
|
|
|
bool CUIHost::WaitRequired (void) const
|
|
|
|
{
|
|
|
|
#ifdef DBG
|
|
|
|
return(IsBeingDebugged());
|
|
|
|
#else /* DBG */
|
|
|
|
return(false);
|
|
|
|
#endif /* DBG */
|
|
|
|
}
|
|
|
|
// --------------------------------------------------------------------------
|
|
// CUIHost::GetData
|
|
//
|
|
// Arguments: pUIHostProcessAddress = Address in the UI host.
|
|
// pLogonProcessAddress = Address in the logon process.
|
|
// iDataSize = Size of the data.
|
|
//
|
|
// Returns: NTSTATUS
|
|
//
|
|
// Purpose: Extracts the data from the UI host. This could be another
|
|
// process that we started or it could be in process if we
|
|
// failed to start the UI host. This function deals with it
|
|
// either way.
|
|
//
|
|
// History: 1999-08-24 vtan created
|
|
// 1999-09-14 vtan factored
|
|
// --------------------------------------------------------------------------
|
|
|
|
NTSTATUS CUIHost::GetData (const void *pUIHostProcessAddress, void *pLogonProcessAddress, int iDataSize) const
|
|
|
|
{
|
|
NTSTATUS status;
|
|
|
|
status = STATUS_SUCCESS;
|
|
if (_hProcess == NULL)
|
|
{
|
|
CopyMemory(pLogonProcessAddress, pUIHostProcessAddress, iDataSize);
|
|
}
|
|
else
|
|
{
|
|
if (ReadProcessMemory(_hProcess, pUIHostProcessAddress, pLogonProcessAddress, iDataSize, NULL) == FALSE)
|
|
{
|
|
status = CStatusCode::StatusCodeOfLastError();
|
|
}
|
|
}
|
|
return(status);
|
|
}
|
|
|
|
// --------------------------------------------------------------------------
|
|
// CUIHost::PutData
|
|
//
|
|
// Arguments: pUIHostProcessAddress = Address in the UI host.
|
|
// pLogonProcessAddress = Address in the logon process.
|
|
// iDataSize = Size of the data.
|
|
//
|
|
// Returns: NTSTATUS
|
|
//
|
|
// Purpose: Puts data into the UI host. This could be another process that
|
|
// we started or it could be in process if we failed to start the
|
|
// UI host. This function deals with it either way.
|
|
//
|
|
// History: 1999-08-24 vtan created
|
|
// 1999-09-14 vtan factored
|
|
// --------------------------------------------------------------------------
|
|
|
|
NTSTATUS CUIHost::PutData (void *pUIHostProcessAddress, const void *pLogonProcessAddress, int iDataSize) const
|
|
|
|
{
|
|
NTSTATUS status;
|
|
|
|
status = STATUS_SUCCESS;
|
|
if (_hProcess == NULL)
|
|
{
|
|
CopyMemory(pUIHostProcessAddress, pLogonProcessAddress, iDataSize);
|
|
}
|
|
else
|
|
{
|
|
if (WriteProcessMemory(_hProcess, pUIHostProcessAddress, const_cast<void*>(pLogonProcessAddress), iDataSize, NULL) == FALSE)
|
|
{
|
|
status = CStatusCode::StatusCodeOfLastError();
|
|
}
|
|
}
|
|
return(status);
|
|
}
|
|
|
|
// --------------------------------------------------------------------------
|
|
// CUIHost::Show
|
|
//
|
|
// Arguments: <none>
|
|
//
|
|
// Returns: NTSTATUS
|
|
//
|
|
// Purpose: Iterate the top level windows on this desktop and for any that
|
|
// correspond to the UI host - show them!
|
|
//
|
|
// History: 2000-03-08 vtan created
|
|
// --------------------------------------------------------------------------
|
|
|
|
NTSTATUS CUIHost::Show (void)
|
|
|
|
{
|
|
int i;
|
|
|
|
i = _hwndArray.GetCount();
|
|
if (i > 0)
|
|
{
|
|
for (--i; i >= 0; --i)
|
|
{
|
|
HWND hwnd;
|
|
|
|
if (NT_SUCCESS(_hwndArray.Get(&hwnd, i)) && (hwnd != NULL))
|
|
{
|
|
(BOOL)ShowWindow(hwnd, SW_SHOW);
|
|
}
|
|
TSTATUS(_hwndArray.Remove(i));
|
|
}
|
|
}
|
|
return(STATUS_SUCCESS);
|
|
}
|
|
|
|
// --------------------------------------------------------------------------
|
|
// CUIHost::Hide
|
|
//
|
|
// Arguments: <none>
|
|
//
|
|
// Returns: NTSTATUS
|
|
//
|
|
// Purpose: Iterate the top level windows on this desktop and for any that
|
|
// correspond to the UI host - hide them!
|
|
//
|
|
// History: 2000-03-08 vtan created
|
|
// --------------------------------------------------------------------------
|
|
|
|
NTSTATUS CUIHost::Hide (void)
|
|
|
|
{
|
|
NTSTATUS status;
|
|
|
|
status = STATUS_SUCCESS;
|
|
if (_hwndArray.GetCount() == 0)
|
|
{
|
|
if (EnumWindows(EnumWindowsProc, reinterpret_cast<LPARAM>(this)) == FALSE)
|
|
{
|
|
status = CStatusCode::StatusCodeOfLastError();
|
|
}
|
|
}
|
|
return(status);
|
|
}
|
|
|
|
// --------------------------------------------------------------------------
|
|
// CUIHost::IsHidden
|
|
//
|
|
// Arguments: <none>
|
|
//
|
|
// Returns: bool
|
|
//
|
|
// Purpose: Returns whether the UI host is currently hidden or not.
|
|
//
|
|
// History: 2000-07-05 vtan created
|
|
// --------------------------------------------------------------------------
|
|
|
|
bool CUIHost::IsHidden (void) const
|
|
|
|
{
|
|
return(_hwndArray.GetCount() != 0);
|
|
}
|
|
|
|
// --------------------------------------------------------------------------
|
|
// CUIHost::GetDataAddress
|
|
//
|
|
// Arguments: <none>
|
|
//
|
|
// Returns: void*
|
|
//
|
|
// Purpose: Returns the address of the buffer valid in the UI host process
|
|
// context.
|
|
//
|
|
// History: 2000-05-05 vtan created
|
|
// --------------------------------------------------------------------------
|
|
|
|
void* CUIHost::GetDataAddress (void) const
|
|
|
|
{
|
|
return(_pBufferAddress);
|
|
}
|
|
|
|
// --------------------------------------------------------------------------
|
|
// CUIHost::PutData
|
|
//
|
|
// Arguments: pvData = Pointer to data.
|
|
// dwDataSize = Size of data (in bytes).
|
|
//
|
|
// Returns: NTSTATUS
|
|
//
|
|
// Purpose: Writes the data to the UI host process at an allocated
|
|
// address. If the address has not been allocated then it's
|
|
// allocated and cached. It's released when this object goes
|
|
// out of scope.
|
|
//
|
|
// History: 2000-05-05 vtan created
|
|
// 2001-01-10 vtan changed to generic data placement
|
|
// --------------------------------------------------------------------------
|
|
|
|
NTSTATUS CUIHost::PutData (const void *pvData, DWORD dwDataSize)
|
|
|
|
{
|
|
NTSTATUS status;
|
|
|
|
if (_pBufferAddress == NULL)
|
|
{
|
|
_pBufferAddress = VirtualAllocEx(_hProcess,
|
|
0,
|
|
2048,
|
|
MEM_COMMIT,
|
|
PAGE_READWRITE);
|
|
}
|
|
if (_pBufferAddress != NULL)
|
|
{
|
|
ASSERTMSG(dwDataSize < 2048, "Impending kernel32!WriteProcessMemory failure in CUIHost::PutData");
|
|
if (WriteProcessMemory(_hProcess,
|
|
_pBufferAddress,
|
|
const_cast<void*>(pvData),
|
|
dwDataSize,
|
|
NULL) != FALSE)
|
|
{
|
|
status = STATUS_SUCCESS;
|
|
}
|
|
else
|
|
{
|
|
status = CStatusCode::StatusCodeOfLastError();
|
|
}
|
|
}
|
|
else
|
|
{
|
|
status = STATUS_NO_MEMORY;
|
|
}
|
|
return(status);
|
|
}
|
|
|
|
// --------------------------------------------------------------------------
|
|
// CUIHost::PutString
|
|
//
|
|
// Arguments: pszString = String to put into UI host process.
|
|
//
|
|
// Returns: NTSTATUS
|
|
//
|
|
// Purpose: Writes the string to the UI host process at an allocated
|
|
// address. If the address has not been allocated then it's
|
|
// allocated and cached. It's released when this object goes
|
|
// out of scope.
|
|
//
|
|
// History: 2000-05-05 vtan created
|
|
// --------------------------------------------------------------------------
|
|
|
|
NTSTATUS CUIHost::PutString (const WCHAR *pszString)
|
|
|
|
{
|
|
ASSERTMSG(lstrlenW(pszString) < 256, "Too many characters in string passed to CUIHost::PutString");
|
|
return(PutData(pszString, (lstrlenW(pszString) + sizeof('\0')) * sizeof(WCHAR)));
|
|
}
|
|
|
|
// --------------------------------------------------------------------------
|
|
// CUIHost::NotifyNoProcess
|
|
//
|
|
// Arguments: <none>
|
|
//
|
|
// Returns: NTSTATUS
|
|
//
|
|
// Purpose: Clears the string address associated with the process that
|
|
// has now died.
|
|
//
|
|
// History: 2001-01-09 vtan created
|
|
// --------------------------------------------------------------------------
|
|
|
|
void CUIHost::NotifyNoProcess (void)
|
|
|
|
{
|
|
_pBufferAddress = NULL;
|
|
}
|
|
|
|
// --------------------------------------------------------------------------
|
|
// CUIHost::ExpandCommandLine
|
|
//
|
|
// Arguments: pszCommandLine = Command line of UI host
|
|
//
|
|
// Returns: <none>
|
|
//
|
|
// Purpose: Find out which UI host we should use for the logon UI. This
|
|
// is specified in registry at the moment but should be a less
|
|
// accessible place to prevent tampering. An error is returned
|
|
// if no host is specified.
|
|
//
|
|
// History: 1999-08-24 vtan created
|
|
// 1999-09-14 vtan factored
|
|
// --------------------------------------------------------------------------
|
|
|
|
void CUIHost::ExpandCommandLine (const TCHAR *pszCommandLine)
|
|
|
|
{
|
|
if (ExpandEnvironmentStrings(pszCommandLine, _szCommandLine, ARRAYSIZE(_szCommandLine)) == 0)
|
|
{
|
|
lstrcpy(_szCommandLine, pszCommandLine);
|
|
}
|
|
}
|
|
|
|
// --------------------------------------------------------------------------
|
|
// CUIHost::EnumWindowsProc
|
|
//
|
|
// Arguments: hwnd = HWND from user32
|
|
// lParam = this object.
|
|
//
|
|
// Returns: BOOL
|
|
//
|
|
// Purpose: Determines if the given HWND in the iteration belongs to the
|
|
// UI host process.
|
|
//
|
|
// History: 2000-03-08 vtan created
|
|
// --------------------------------------------------------------------------
|
|
|
|
BOOL CALLBACK CUIHost::EnumWindowsProc (HWND hwnd, LPARAM lParam)
|
|
|
|
{
|
|
DWORD dwThreadID, dwProcessID;
|
|
CUIHost *pUIHost;
|
|
|
|
pUIHost = reinterpret_cast<CUIHost*>(lParam);
|
|
dwThreadID = GetWindowThreadProcessId(hwnd, &dwProcessID);
|
|
if ((dwProcessID == pUIHost->_dwProcessID) && IsWindowVisible(hwnd))
|
|
{
|
|
(NTSTATUS)pUIHost->_hwndArray.Add(&hwnd);
|
|
(BOOL)ShowWindow(hwnd, SW_HIDE);
|
|
}
|
|
return(TRUE);
|
|
}
|
|
|