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windows-nt/Source/XPSP1/NT/shell/ext/gina/logonstatus.cpp

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// --------------------------------------------------------------------------
// Module Name: CWLogonStatus.cpp
//
// Copyright (c) 2000, Microsoft Corporation
//
// File that contains implementation for status UI hosting by an external
// process.
//
// History: 2000-05-11 vtan created
// --------------------------------------------------------------------------
#include "StandardHeader.h"
#include <msginaexports.h>
#include "Access.h"
#include "GinaIPC.h"
#include "LogonWait.h"
#include "SingleThreadedExecution.h"
#include "StatusCode.h"
#include "SystemSettings.h"
#include "UIHost.h"
// --------------------------------------------------------------------------
// CLogonStatus
//
// Purpose: C++ class to handle logon status external process for consumer
// windows.
//
// History: 2000-05-11 vtan created
// --------------------------------------------------------------------------
class CLogonStatus : public ILogonExternalProcess
{
private:
CLogonStatus (void);
public:
CLogonStatus (const TCHAR *pszParameter);
~CLogonStatus (void);
NTSTATUS Start (bool fWait);
CUIHost* GetUIHost (void);
static bool IsStatusWindow (HWND hwnd);
bool WaitForUIHost (void);
void ShowStatusMessage (const WCHAR *pszMessage);
void SetStateStatus (int iCode);
void SetStateLogon (int iCode);
void SetStateLoggedOn (void);
void SetStateHide (void);
void SetStateEnd (bool fSendMessage);
void NotifyWait (void);
void NotifyNoAnimations (void);
void SelectUser (const WCHAR *pszUsername, const WCHAR *pszDomain);
void InteractiveLogon (const WCHAR *pszUsername, const WCHAR *pszDomain, WCHAR *pszPassword);
HANDLE ResetReadyEvent (void);
bool IsSuspendAllowed (void) const;
void ShowUIHost (void);
void HideUIHost (void);
bool IsUIHostHidden (void) const;
public:
virtual bool AllowTermination (DWORD dwExitCode);
virtual NTSTATUS SignalAbnormalTermination (void);
virtual NTSTATUS SignalRestart (void);
virtual NTSTATUS LogonRestart (void);
private:
bool IsUIHostReady (void) const;
void SendToUIHost (WPARAM wParam, LPARAM lParam);
void UIHostReadySignal (void);
static void CALLBACK CB_UIHostReadySignal (void *pV, BOOLEAN fTimerOrWaitFired);
static void CALLBACK CB_UIHostAbnormalTermination (ULONG_PTR dwParam);
private:
DWORD _dwThreadID;
bool _fRegisteredWait;
HANDLE _hEvent;
HANDLE _hWait;
int _iState,
_iCode,
_iStatePending;
WPARAM _waitWPARAM;
LPARAM _waitLPARAM;
CUIHost* _pUIHost;
CLogonWait _logonWait;
};
CCriticalSection* g_pLogonStatusLock = NULL;
CLogonStatus* g_pLogonStatus = NULL;
// --------------------------------------------------------------------------
// CLogonStatus::CLogonStatus
//
// Arguments: pszParameter = Parameter to pass to status UI host.
//
// Returns: <none>
//
// Purpose: Constructor for CLogonStatus. This gets the status UI host
// from the registry and assigns the given parameter into the
// object. Create a named event which SHGINA knows about and
// will signal once the ILogonStatusHost class has been
// instantiated.
//
// History: 2000-05-11 vtan created
// --------------------------------------------------------------------------
CLogonStatus::CLogonStatus (const TCHAR *pszParameter) :
_dwThreadID(0),
_fRegisteredWait(false),
_hEvent(NULL),
_hWait(NULL),
_iState(UI_STATE_STATUS),
_iCode(0),
_iStatePending(0),
_waitWPARAM(0),
_waitLPARAM(0),
_pUIHost(NULL)
{
TCHAR szRawHostCommandLine[MAX_PATH];
if (ERROR_SUCCESS == CSystemSettings::GetUIHost(szRawHostCommandLine))
{
_pUIHost = new CUIHost(szRawHostCommandLine);
if (_pUIHost != NULL)
{
_pUIHost->SetInterface(this);
_pUIHost->SetParameter(pszParameter);
}
}
SECURITY_ATTRIBUTES securityAttributes;
// Build a security descriptor for the event that allows:
// S-1-5-18 EVENT_ALL_ACCESS
// S-1-5-32-544 SYNCHRONIZE | READ_CONTROL | EVENT_QUERY_STATE
static SID_IDENTIFIER_AUTHORITY s_SecurityNTAuthority = SECURITY_NT_AUTHORITY;
static const CSecurityDescriptor::ACCESS_CONTROL s_AccessControl[] =
{
{
&s_SecurityNTAuthority,
1,
SECURITY_LOCAL_SYSTEM_RID,
0, 0, 0, 0, 0, 0, 0,
EVENT_ALL_ACCESS
},
{
&s_SecurityNTAuthority,
2,
SECURITY_BUILTIN_DOMAIN_RID,
DOMAIN_ALIAS_RID_ADMINS,
0, 0, 0, 0, 0, 0,
SYNCHRONIZE | READ_CONTROL | EVENT_QUERY_STATE
}
};
securityAttributes.nLength = sizeof(securityAttributes);
securityAttributes.lpSecurityDescriptor = CSecurityDescriptor::Create(ARRAYSIZE(s_AccessControl), s_AccessControl);
securityAttributes.bInheritHandle = FALSE;
_hEvent = CreateEvent(&securityAttributes, TRUE, FALSE, TEXT("msgina: StatusHostReadyEvent"));
ReleaseMemory(securityAttributes.lpSecurityDescriptor);
}
// --------------------------------------------------------------------------
// CLogonStatus::~CLogonStatus
//
// Arguments: <none>
//
// Returns: <none>
//
// Purpose: Destructor for CLogonStatus. Releases references.
//
// History: 2000-05-11 vtan created
// --------------------------------------------------------------------------
CLogonStatus::~CLogonStatus (void)
{
ASSERTMSG(_hWait == NULL, "Resend wait object not released in CLogonStatus::~CLogonStatus");
ReleaseHandle(_hEvent);
ASSERTMSG(_iState == UI_STATE_END, "State must be UI_STATE_END in CLogonStatus::~CLogonStatus");
if (_pUIHost != NULL)
{
_pUIHost->Release();
_pUIHost = NULL;
}
}
// --------------------------------------------------------------------------
// CLogonStatus::Start
//
// Arguments: fWait = Wait for status host to signal ready.
//
// Returns: NTSTATUS
//
// Purpose: Starts the status UI host. Don't wait for the UI host. There
// is a mechanism that can queue a message if the UI host window
// cannot be found.
//
// History: 2000-05-11 vtan created
// --------------------------------------------------------------------------
NTSTATUS CLogonStatus::Start (bool fWait)
{
NTSTATUS status;
if (_pUIHost != NULL)
{
(HANDLE)ResetReadyEvent();
status = _pUIHost->Start();
if (NT_SUCCESS(status))
{
_dwThreadID = GetCurrentThreadId();
if (fWait || _pUIHost->WaitRequired())
{
if (!WaitForUIHost())
{
status = STATUS_UNSUCCESSFUL;
}
}
}
}
else
{
status = STATUS_UNSUCCESSFUL;
}
return(status);
}
// --------------------------------------------------------------------------
// CLogonStatus::GetUIHost
//
// Arguments: <none>
//
// Returns: CUIHost*
//
// Purpose: Returns a reference to the UIHost object held internally.
// The reference belongs to the caller and must be released.
//
// History: 2000-05-11 vtan created
// --------------------------------------------------------------------------
CUIHost* CLogonStatus::GetUIHost (void)
{
if (_pUIHost != NULL)
{
_pUIHost->AddRef();
}
return(_pUIHost);
}
// --------------------------------------------------------------------------
// CLogonStatus::IsStatusWindow
//
// Arguments: hwnd = HWND to check.
//
// Returns: bool
//
// Purpose: Returns whether the given HWND is the status window.
//
// History: 2000-06-26 vtan created
// --------------------------------------------------------------------------
bool CLogonStatus::IsStatusWindow (HWND hwnd)
{
TCHAR szWindowClass[256];
return((GetClassName(hwnd, szWindowClass, ARRAYSIZE(szWindowClass)) != 0) &&
(lstrcmpi(STATUS_WINDOW_CLASS_NAME, szWindowClass) == 0));
}
// --------------------------------------------------------------------------
// CLogonStatus::WaitForUIHost
//
// Arguments: <none>
//
// Returns: bool
//
// Purpose: Waits on the named event that the UI host signals when it's
// initialized. Typically this happens very quickly but we don't
// wait on it when starting up the UI host.
//
// History: 2000-09-10 vtan created
// --------------------------------------------------------------------------
bool CLogonStatus::WaitForUIHost (void)
{
bool fResult;
fResult = true;
ASSERTMSG(_hEvent != NULL, "No UI host named event to wait on in CLogonStatus::WaitForUIHost");
if (!IsUIHostReady())
{
DWORD dwWaitResult;
#ifdef DBG
DWORD dwWaitStart, dwWaitEnd;
dwWaitStart = (WAIT_TIMEOUT == WaitForSingleObject(_hEvent, 0)) ? GetTickCount() : 0;
#endif /* DBG */
do
{
dwWaitResult = WaitForSingleObject(_hEvent, 0);
if (dwWaitResult != WAIT_OBJECT_0)
{
dwWaitResult = MsgWaitForMultipleObjectsEx(1, &_hEvent, INFINITE, QS_ALLINPUT, MWMO_ALERTABLE);
if (dwWaitResult == WAIT_OBJECT_0 + 1)
{
MSG msg;
if (PeekMessage(&msg, NULL, 0, 0, PM_REMOVE) != FALSE)
{
(BOOL)TranslateMessage(&msg);
(LRESULT)DispatchMessage(&msg);
}
}
}
} while ((dwWaitResult == WAIT_OBJECT_0 + 1) && (dwWaitResult != WAIT_IO_COMPLETION));
#ifdef DBG
dwWaitEnd = GetTickCount();
if ((dwWaitStart != 0) && ((dwWaitEnd - dwWaitStart) != 0))
{
char szBuffer[256];
wsprintfA(szBuffer, "waited %d ticks for UI host", dwWaitEnd - dwWaitStart);
INFORMATIONMSG(szBuffer);
}
#endif /* DBG */
fResult = (dwWaitResult != WAIT_IO_COMPLETION);
}
return(fResult);
}
// --------------------------------------------------------------------------
// CLogonStatus::ShowStatusMessage
//
// Arguments: pszMessage = Unicode string message to display.
//
// Returns: <none>
//
// Purpose: Tells the UI host to display the given string message. Puts
// the string directly inside the status host process and tells
// the process where in its address space to find the string.
// The string is limited to 256 characters.
//
// History: 2000-05-11 vtan created
// --------------------------------------------------------------------------
void CLogonStatus::ShowStatusMessage (const WCHAR *pszMessage)
{
if (NT_SUCCESS(_pUIHost->PutString(pszMessage)))
{
SendToUIHost(UI_DISPLAY_STATUS, reinterpret_cast<LONG_PTR>(_pUIHost->GetDataAddress()));
}
}
// --------------------------------------------------------------------------
// CLogonStatus::SetStateStatus
//
// Arguments: iCode = Magic code number for lock.
//
// Returns: <none>
//
// Purpose: Tells the status UI host to go into status state.
//
// History: 2000-05-11 vtan created
// --------------------------------------------------------------------------
void CLogonStatus::SetStateStatus (int iCode)
{
_iStatePending = UI_STATE_STATUS;
if (WaitForUIHost() && (_iState != UI_STATE_STATUS))
{
SendToUIHost(UI_STATE_STATUS, iCode);
_iState = UI_STATE_STATUS;
_iCode = iCode;
}
_iStatePending = UI_STATE_NONE;
}
// --------------------------------------------------------------------------
// CLogonStatus::SetStateLogon
//
// Arguments: iCode = Magic code number for lock.
//
// Returns: <none>
//
// Purpose: Tells the status UI host to go into logon state.
//
// History: 2000-05-11 vtan created
// --------------------------------------------------------------------------
void CLogonStatus::SetStateLogon (int iCode)
{
_iStatePending = UI_STATE_LOGON;
if (WaitForUIHost() && (iCode == _iCode))
{
SendToUIHost(UI_STATE_LOGON, iCode);
_iState = UI_STATE_LOGON;
_iCode = 0;
}
_iStatePending = UI_STATE_NONE;
}
// --------------------------------------------------------------------------
// CLogonStatus::SetStateLoggedOn
//
// Arguments: <none>
//
// Returns: <none>
//
// Purpose: Tells the status UI host to go into logged on state.
//
// History: 2000-05-24 vtan created
// --------------------------------------------------------------------------
void CLogonStatus::SetStateLoggedOn (void)
{
_iStatePending = UI_STATE_STATUS;
if (WaitForUIHost())
{
SendToUIHost(UI_STATE_LOGGEDON, 0);
_iState = UI_STATE_STATUS;
}
_iStatePending = UI_STATE_NONE;
}
// --------------------------------------------------------------------------
// CLogonStatus::SetStateHide
//
// Arguments: <none>
//
// Returns: <none>
//
// Purpose: Tells the status UI host to hide itself.
//
// History: 2001-01-08 vtan created
// --------------------------------------------------------------------------
void CLogonStatus::SetStateHide (void)
{
_iStatePending = UI_STATE_HIDE;
if (WaitForUIHost())
{
SendToUIHost(UI_STATE_HIDE, 0);
_iState = UI_STATE_HIDE;
}
_iStatePending = UI_STATE_NONE;
}
// --------------------------------------------------------------------------
// CLogonStatus::SetStateEnd
//
// Arguments: fSendMessage = Send message to UI host or not.
//
// Returns: <none>
//
// Purpose: Tells the status UI host to end and terminate itself.
//
// History: 2000-05-11 vtan created
// --------------------------------------------------------------------------
void CLogonStatus::SetStateEnd (bool fSendMessage)
{
bool fHostAlive;
HANDLE hWait;
_iStatePending = UI_STATE_END;
// When going into end mode if there's a wait registered then
// unregister it. This will release an outstanding reference.
// A re-register should never happen but this is set just in case.
_fRegisteredWait = true;
hWait = InterlockedExchangePointer(&_hWait, NULL);
if (hWait != NULL)
{
if (UnregisterWait(hWait) != FALSE)
{
Release();
}
}
if (fSendMessage)
{
fHostAlive = WaitForUIHost();
}
else
{
fHostAlive = true;
}
if (fHostAlive)
{
if (_pUIHost != NULL)
{
_pUIHost->SetInterface(NULL);
}
if (fSendMessage)
{
SendToUIHost(UI_STATE_END, 0);
}
_iState = UI_STATE_END;
}
_iStatePending = UI_STATE_NONE;
}
// --------------------------------------------------------------------------
// CLogonStatus::NotifyWait
//
// Arguments: <none>
//
// Returns: <none>
//
// Purpose: Tells the status UI host to display a title that the system
// is shutting down.
//
// History: 2000-07-14 vtan created
// --------------------------------------------------------------------------
void CLogonStatus::NotifyWait (void)
{
SendToUIHost(UI_NOTIFY_WAIT, 0);
}
// --------------------------------------------------------------------------
// CLogonStatus::NotifyNoAnimations
//
// Arguments: <none>
//
// Returns: <none>
//
// Purpose: Tells the status UI host to no longer perform animations.
//
// History: 2001-03-21 vtan created
// --------------------------------------------------------------------------
void CLogonStatus::NotifyNoAnimations (void)
{
SendToUIHost(UI_SET_ANIMATIONS, 0);
}
// --------------------------------------------------------------------------
// CLogonStatus::SelectUser
//
// Arguments: pszUsername = User name to select.
//
// Returns: <none>
//
// Purpose: Tells the status UI host to select the user by the given
// logon name.
//
// History: 2001-01-10 vtan created
// --------------------------------------------------------------------------
void CLogonStatus::SelectUser (const WCHAR *pszUsername, const WCHAR *pszDomain)
{
LOGONIPC_USERID logonIPC;
(WCHAR*)lstrcpyW(logonIPC.wszUsername, pszUsername);
(WCHAR*)lstrcpyW(logonIPC.wszDomain, pszDomain);
if (NT_SUCCESS(_pUIHost->PutData(&logonIPC, sizeof(logonIPC))))
{
SendToUIHost(UI_SELECT_USER, reinterpret_cast<LONG_PTR>(_pUIHost->GetDataAddress()));
}
}
// --------------------------------------------------------------------------
// CLogonStatus::InteractiveLogon
//
// Arguments: pszUsername = Username to logon.
// pszDomain = Domain to logon.
// pszPassword = Password to use.
//
// Returns: <none>
//
// Purpose: Tell the status host to log the specified user on.
//
// History: 2001-01-12 vtan created
// --------------------------------------------------------------------------
void CLogonStatus::InteractiveLogon (const WCHAR *pszUsername, const WCHAR *pszDomain, WCHAR *pszPassword)
{
LOGONIPC_CREDENTIALS logonIPCCredentials;
(WCHAR*)lstrcpyW(logonIPCCredentials.userID.wszUsername, pszUsername);
(WCHAR*)lstrcpyW(logonIPCCredentials.userID.wszDomain, pszDomain);
(WCHAR*)lstrcpyW(logonIPCCredentials.wszPassword, pszPassword);
ZeroMemory(pszPassword, (lstrlenW(pszPassword) + sizeof('\0'))* sizeof(WCHAR));
if (NT_SUCCESS(_pUIHost->PutData(&logonIPCCredentials, sizeof(logonIPCCredentials))))
{
SendToUIHost(UI_INTERACTIVE_LOGON, reinterpret_cast<LONG_PTR>(_pUIHost->GetDataAddress()));
}
}
// --------------------------------------------------------------------------
// CLogonStatus::ResetReadyEvent
//
// Arguments: <none>
//
// Returns: HANDLE
//
// Purpose: Reset the UI host ready event. A new instance will set this
// event. Use this in UI host failure.
//
// History: 2001-01-09 vtan created
// --------------------------------------------------------------------------
HANDLE CLogonStatus::ResetReadyEvent (void)
{
TBOOL(ResetEvent(_hEvent));
return(_hEvent);
}
// --------------------------------------------------------------------------
// CLogonStatus::IsSuspendAllowed
//
// Arguments: <none>
//
// Returns: bool
//
// Purpose: Returns whether the UI host allows suspending of the computer.
// This is true if in the logon state or in the status (locked)
// state.
//
// History: 2000-08-21 vtan created
// --------------------------------------------------------------------------
bool CLogonStatus::IsSuspendAllowed (void) const
{
return(((_iState == UI_STATE_STATUS) && (_iCode != 0)) ||
(_iStatePending == UI_STATE_LOGON) ||
(_iState == UI_STATE_LOGON) ||
(_iState == UI_STATE_HIDE));
}
// --------------------------------------------------------------------------
// CLogonStatus::ShowUIHost
//
// Arguments: <none>
//
// Returns: <none>
//
// Purpose: Shows the UI host.
//
// History: 2001-03-05 vtan created
// --------------------------------------------------------------------------
void CLogonStatus::ShowUIHost (void)
{
_pUIHost->Show();
}
// --------------------------------------------------------------------------
// CLogonStatus::HideUIHost
//
// Arguments: <none>
//
// Returns: <none>
//
// Purpose: Hides the UI host.
//
// History: 2001-03-05 vtan created
// --------------------------------------------------------------------------
void CLogonStatus::HideUIHost (void)
{
_pUIHost->Hide();
}
// --------------------------------------------------------------------------
// CLogonStatus::IsUIHostHidden
//
// Arguments: <none>
//
// Returns: <none>
//
// Purpose: Returns whether the UI host is hidden.
//
// History: 2001-03-05 vtan created
// --------------------------------------------------------------------------
bool CLogonStatus::IsUIHostHidden (void) const
{
return(_pUIHost->IsHidden());
}
// --------------------------------------------------------------------------
// CLogonStatus::AllowTermination
//
// Arguments: dwExitCode = Exit code of host process.
//
// Returns: bool
//
// Purpose: Returns whether the host process is allowed to terminate
// given the exit code passed in.
//
// Currently the host process is not allowed to terminate.
//
// History: 2000-05-11 vtan created
// --------------------------------------------------------------------------
bool CLogonStatus::AllowTermination (DWORD dwExitCode)
{
UNREFERENCED_PARAMETER(dwExitCode);
return(false);
}
// --------------------------------------------------------------------------
// CLogonStatus::SignalAbnormalTermination
//
// Arguments: <none>
//
// Returns: NTSTATUS
//
// Purpose: Handles abnormal termination of host process.
//
// History: 2000-05-11 vtan created
// --------------------------------------------------------------------------
NTSTATUS CLogonStatus::SignalAbnormalTermination (void)
{
HANDLE hThread;
TSTATUS(_logonWait.Cancel());
hThread = OpenThread(THREAD_SET_CONTEXT | THREAD_QUERY_INFORMATION, FALSE, _dwThreadID);
if (hThread != NULL)
{
(BOOL)QueueUserAPC(CB_UIHostAbnormalTermination, hThread, reinterpret_cast<ULONG_PTR>(this));
TBOOL(CloseHandle(hThread));
}
_Shell_LogonStatus_Destroy(HOST_END_FAILURE);
return(STATUS_SUCCESS);
}
// --------------------------------------------------------------------------
// CLogonStatus::SignalRestart
//
// Arguments: <none>
//
// Returns: NTSTATUS
//
// Purpose: Function to reset the ready event and set the UI host into
// status state. This is invoked when the UI host is restarted
// after a failure.
//
// History: 2001-01-09 vtan created
// --------------------------------------------------------------------------
NTSTATUS CLogonStatus::SignalRestart (void)
{
(HANDLE)ResetReadyEvent();
return(_logonWait.Register(_hEvent, this));
}
// --------------------------------------------------------------------------
// CLogonStatus::LogonRestart
//
// Arguments: <none>
//
// Returns: NTSTATUS
//
// Purpose:
//
// History: 2001-02-21 vtan created
// --------------------------------------------------------------------------
NTSTATUS CLogonStatus::LogonRestart (void)
{
SetStateStatus(0);
return(STATUS_SUCCESS);
}
// --------------------------------------------------------------------------
// CLogonStatus::IsUIHostReady
//
// Arguments: <none>
//
// Returns: bool
//
// Purpose: Returns whether the UI host is ready.
//
// History: 2000-09-11 vtan created
// --------------------------------------------------------------------------
bool CLogonStatus::IsUIHostReady (void) const
{
ASSERTMSG(_hEvent != NULL, "No UI host named event to wait on in CLogonStatus::IsUIHostReady");
return(WAIT_OBJECT_0 == WaitForSingleObject(_hEvent, 0));
}
// --------------------------------------------------------------------------
// CLogonStatus::SendToUIHost
//
// Arguments: wParam = WPARAM to send to UI host.
// lParam = LPARAM to send to UI host.
//
// Returns: <none>
//
// Purpose: Finds the status window created by SHGINA and sends the
// message to it. That window turns around and sends the message
// to the UI host. This allows communication implemenation method
// to change without forcing the UI host to be rebuilt.
//
// History: 2000-05-11 vtan created
// 2000-09-11 vtan uses PostMessage not SendMessage
// --------------------------------------------------------------------------
void CLogonStatus::SendToUIHost (WPARAM wParam, LPARAM lParam)
{
HWND hwnd;
if (IsUIHostReady())
{
hwnd = FindWindow(STATUS_WINDOW_CLASS_NAME, NULL);
}
else
{
hwnd = NULL;
}
if (hwnd != NULL)
{
HANDLE hWait;
// Don't allow any registrations if we've found it.
_fRegisteredWait = true;
hWait = InterlockedExchangePointer(&_hWait, NULL);
if (hWait != NULL)
{
if (UnregisterWait(hWait) != FALSE)
{
// If sucesssfully releasing the hWait we need to call release.
Release();
}
}
TBOOL(PostMessage(hwnd, WM_UISERVICEREQUEST, wParam, lParam));
}
else if (!_fRegisteredWait)
{
// Cannot find the UI host window. It's probably still getting
// its act together. Queue this post message for a callback when
// the event is signaled if a register has not already been
// made. If one has then just change the parameters.
// Add a reference here. The callback will release it. If the
// register on the wait failed the release the reference.
if (_hWait == NULL)
{
HANDLE hWait;
AddRef();
if (RegisterWaitForSingleObject(&hWait,
_hEvent,
CB_UIHostReadySignal,
this,
INFINITE,
WT_EXECUTEINWAITTHREAD | WT_EXECUTEONLYONCE) != FALSE)
{
if (InterlockedCompareExchangePointer(&_hWait, hWait, NULL) == NULL)
{
_fRegisteredWait = true;
}
else
{
// Someone else beat us to registering (should never happen)
(BOOL)UnregisterWait(hWait);
Release();
}
}
else
{
Release();
}
}
_waitWPARAM = wParam;
_waitLPARAM = lParam;
}
}
// --------------------------------------------------------------------------
// CLogonStatus::UIHostReadySignal
//
// Arguments: <none>
//
// Returns: <none>
//
// Purpose: Callback invoked when the UI host signals it's ready. This
// function unregisters the wait and resend the status message
// to the UI host.
//
// History: 2000-09-10 vtan created
// --------------------------------------------------------------------------
void CLogonStatus::UIHostReadySignal (void)
{
HANDLE hWait;
hWait = InterlockedExchangePointer(&_hWait, NULL);
if (hWait != NULL)
{
TBOOL(UnregisterWait(hWait));
}
SendToUIHost(_waitWPARAM, _waitLPARAM);
}
// --------------------------------------------------------------------------
// CLogonStatus::CB_UIHostReadySignal
//
// Arguments: See the platform SDK under WaitOrTimerCallback.
//
// Returns: <none>
//
// Purpose: Callback entry point for registered event wait.
//
// History: 2000-09-10 vtan created
// --------------------------------------------------------------------------
void CALLBACK CLogonStatus::CB_UIHostReadySignal (void *pV, BOOLEAN fTimerOrWaitFired)
{
UNREFERENCED_PARAMETER(fTimerOrWaitFired);
CLogonStatus *pThis;
pThis = reinterpret_cast<CLogonStatus*>(pV);
if (pThis != NULL)
{
pThis->UIHostReadySignal();
}
pThis->Release();
}
// --------------------------------------------------------------------------
// CLogonStatus::CB_UIHostAbnormalTermination
//
// Arguments: See the platform SDK under APCProc.
//
// Returns: <none>
//
// Purpose: Callback entry point for queued APC on abnormal termination.
//
// History: 2001-02-19 vtan created
// --------------------------------------------------------------------------
void CALLBACK CLogonStatus::CB_UIHostAbnormalTermination (ULONG_PTR dwParam)
{
UNREFERENCED_PARAMETER(dwParam);
}
// --------------------------------------------------------------------------
// ::_Shell_LogonStatus_StaticInitialize
//
// Arguments: <none>
//
// Returns: NTSTATUS
//
// Purpose: Initialize the critical section for g_pLogonStatus.
//
// History: 2001-06-11 vtan created
// --------------------------------------------------------------------------
EXTERN_C NTSTATUS _Shell_LogonStatus_StaticInitialize (void)
{
NTSTATUS status;
ASSERTMSG(g_pLogonStatusLock == NULL, "g_pLogonStatusLock already exists in _Shell_LogonStatus_StaticInitialize");
g_pLogonStatusLock = new CCriticalSection;
if (g_pLogonStatusLock != NULL)
{
status = g_pLogonStatusLock->Status();
if (!NT_SUCCESS(status))
{
delete g_pLogonStatusLock;
g_pLogonStatusLock = NULL;
}
}
else
{
status = STATUS_NO_MEMORY;
}
return(status);
}
// --------------------------------------------------------------------------
// ::_Shell_LogonStatus_StaticTerminate
//
// Arguments: <none>
//
// Returns: NTSTATUS
//
// Purpose: Delete the critical section for g_pLogonStatus.
//
// History: 2001-06-11 vtan created
// --------------------------------------------------------------------------
EXTERN_C NTSTATUS _Shell_LogonStatus_StaticTerminate (void)
{
if (g_pLogonStatusLock != NULL)
{
delete g_pLogonStatusLock;
g_pLogonStatusLock = NULL;
}
return(STATUS_SUCCESS);
}
// --------------------------------------------------------------------------
// ::_Shell_LogonStatus_Init
//
// Arguments: uiStartType = Start mode of status host.
//
// Returns: <none>
//
// Purpose: Creates the instance of CLogonStatus telling it to pass
// "/status" as the parameter to the UI host. It then starts
// the host if the object was created.
//
// The object is held globally.
//
// History: 2000-05-11 vtan created
// 2000-07-13 vtan add shutdown parameter.
// 2000-07-17 vtan changed to start type parameter.
// --------------------------------------------------------------------------
EXTERN_C void _Shell_LogonStatus_Init (UINT uiStartType)
{
bool fIsRemote, fIsSessionZero;
fIsRemote = (GetSystemMetrics(SM_REMOTESESSION) != 0);
fIsSessionZero = (NtCurrentPeb()->SessionId == 0);
if ((!fIsRemote || fIsSessionZero || CSystemSettings::IsForceFriendlyUI()) && CSystemSettings::IsFriendlyUIActive())
{
bool fWait;
TCHAR szParameter[256];
if (g_pLogonStatusLock != NULL)
{
g_pLogonStatusLock->Acquire();
if (g_pLogonStatus == NULL)
{
(TCHAR*)lstrcpy(szParameter, TEXT(" /status"));
if (HOST_START_SHUTDOWN == uiStartType)
{
(TCHAR*)lstrcat(szParameter, TEXT(" /shutdown"));
fWait = true;
}
else if (HOST_START_WAIT == uiStartType)
{
(TCHAR*)lstrcat(szParameter, TEXT(" /wait"));
fWait = true;
}
else
{
fWait = false;
}
g_pLogonStatus = new CLogonStatus(szParameter);
if (g_pLogonStatus != NULL)
{
NTSTATUS status;
g_pLogonStatusLock->Release();
status = g_pLogonStatus->Start(fWait);
g_pLogonStatusLock->Acquire();
if (!NT_SUCCESS(status) && (g_pLogonStatus != NULL))
{
g_pLogonStatus->Release();
g_pLogonStatus = NULL;
}
}
}
else
{
g_pLogonStatus->SetStateStatus(0);
if ((HOST_START_SHUTDOWN == uiStartType) || (HOST_START_WAIT == uiStartType))
{
g_pLogonStatus->NotifyWait();
}
}
g_pLogonStatusLock->Release();
}
}
}
// --------------------------------------------------------------------------
// ::_Shell_LogonStatus_Destroy
//
// Arguments: uiEndType = End mode of status host.
//
// Returns: <none>
//
// Purpose: If the end type is hide then tell the status host to hide.
// Otherwise check the end type is terminate. In that case tell
// the status host to go away.
//
// History: 2000-05-11 vtan created
// 2001-01-09 vtan add end parameter
// --------------------------------------------------------------------------
EXTERN_C void _Shell_LogonStatus_Destroy (UINT uiEndType)
{
if (g_pLogonStatusLock != NULL)
{
CSingleThreadedExecution lock(*g_pLogonStatusLock);
if (g_pLogonStatus != NULL)
{
switch (uiEndType)
{
case HOST_END_HIDE:
// HOST_END_HIDE: Is the UI host static? If so then hide it.
// Otherwise revert to start/stop mode (dynamic) and force the
// UI host to terminate.
if (CSystemSettings::IsUIHostStatic())
{
g_pLogonStatus->SetStateHide();
break;
}
uiEndType = HOST_END_TERMINATE;
// If the the host is dynamic then set the type to
// HOST_END_TERMINATE and fall thru to this case so that
// the host is told to end.
case HOST_END_TERMINATE:
// HOST_END_TERMINATE: Force the UI host to terminate. This is
// used in circumstances where it must terminate such as we
// are terminating or the machine is shutting down.
g_pLogonStatus->SetStateEnd(true);
break;
case HOST_END_FAILURE:
// HOST_END_FAILURE: This is sent when the UI host failed to
// start and will not be restarted. This allows the interface
// reference to be deleted so that object reference count
// will reach zero and the memory will be released.
g_pLogonStatus->SetStateEnd(false);
uiEndType = HOST_END_TERMINATE;
break;
default:
DISPLAYMSG("Unknown uiEndType passed to _Shell_LogonStatus_Destroy");
break;
}
if (HOST_END_TERMINATE == uiEndType)
{
g_pLogonStatus->Release();
g_pLogonStatus = NULL;
}
}
}
}
// --------------------------------------------------------------------------
// ::_Shell_LogonStatus_Exists
//
// Arguments: <none>
//
// Returns: BOOL
//
// Purpose: Returns whether there is status host created.
//
// History: 2000-05-11 vtan created
// --------------------------------------------------------------------------
EXTERN_C BOOL _Shell_LogonStatus_Exists (void)
{
return(g_pLogonStatus != NULL);
}
// --------------------------------------------------------------------------
// ::_Shell_LogonStatus_IsStatusWindow
//
// Arguments: hwnd = HWND to check.
//
// Returns: BOOL
//
// Purpose: Returns whether the given HWND is the status HWND.
//
// History: 2000-06-26 vtan created
// --------------------------------------------------------------------------
EXTERN_C BOOL _Shell_LogonStatus_IsStatusWindow (HWND hwnd)
{
return(CLogonStatus::IsStatusWindow(hwnd));
}
// --------------------------------------------------------------------------
// ::_Shell_LogonStatus_IsSuspendAllowed
//
// Arguments: <none>
//
// Returns: BOOL
//
// Purpose: Ask the status host (if present) if suspend is allowed.
//
// History: 2000-08-18 vtan created
// --------------------------------------------------------------------------
EXTERN_C BOOL _Shell_LogonStatus_IsSuspendAllowed (void)
{
return((g_pLogonStatus == NULL) || g_pLogonStatus->IsSuspendAllowed());
}
// --------------------------------------------------------------------------
// ::_Shell_LogonStatus_WaitforUIHost
//
// Arguments: <none>
//
// Returns: BOOL
//
// Purpose: External C entry point to force the current thread to wait
// until the UI host signals it's ready. Returns whether the
// wait was successful or abandoned. Success is true. Abandoned
// or non-existant is false.
//
// History: 2000-09-10 vtan created
// 2001-02-19 vtan added return result
// --------------------------------------------------------------------------
EXTERN_C BOOL _Shell_LogonStatus_WaitForUIHost (void)
{
return((g_pLogonStatus != NULL) && g_pLogonStatus->WaitForUIHost());
}
// --------------------------------------------------------------------------
// ::_Shell_LogonStatus_ShowStatusMessage
//
// Arguments: pszMessage = Unicode string to display.
//
// Returns: <none>
//
// Purpose: External C entry point to pass display string to status host.
//
// History: 2000-05-11 vtan created
// --------------------------------------------------------------------------
EXTERN_C void _Shell_LogonStatus_ShowStatusMessage (const WCHAR *pszMessage)
{
if (g_pLogonStatus != NULL)
{
g_pLogonStatus->ShowStatusMessage(pszMessage);
}
}
// --------------------------------------------------------------------------
// ::_Shell_LogonStatus_SetStateStatus
//
// Arguments: <none>
//
// Returns: <none>
//
// Purpose: External C entry point to tell the status host to go to status
// state.
//
// History: 2000-05-11 vtan created
// --------------------------------------------------------------------------
EXTERN_C void _Shell_LogonStatus_SetStateStatus (int iCode)
{
if (g_pLogonStatus != NULL)
{
g_pLogonStatus->SetStateStatus(iCode);
}
}
// --------------------------------------------------------------------------
// ::_Shell_LogonStatus_SetStateLogon
//
// Arguments: <none>
//
// Returns: <none>
//
// Purpose: External C entry point to tell the status host to go to logon
// state.
//
// History: 2000-05-11 vtan created
// --------------------------------------------------------------------------
EXTERN_C void _Shell_LogonStatus_SetStateLogon (int iCode)
{
if (g_pLogonStatus != NULL)
{
g_pLogonStatus->SetStateLogon(iCode);
}
}
// --------------------------------------------------------------------------
// ::_Shell_LogonStatus_SetStateLoggedOn
//
// Arguments: <none>
//
// Returns: <none>
//
// Purpose: External C entry point to tell the status host to go to
// logged on state.
//
// History: 2000-05-24 vtan created
// --------------------------------------------------------------------------
EXTERN_C void _Shell_LogonStatus_SetStateLoggedOn (void)
{
if (g_pLogonStatus != NULL)
{
g_pLogonStatus->SetStateLoggedOn();
}
}
// --------------------------------------------------------------------------
// ::_Shell_LogonStatus_SetStateHide
//
// Arguments: <none>
//
// Returns: <none>
//
// Purpose: External C entry point to tell the status host to hide itself.
//
// History: 2001-01-08 vtan created
// --------------------------------------------------------------------------
EXTERN_C void _Shell_LogonStatus_SetStateHide (void)
{
if (g_pLogonStatus != NULL)
{
g_pLogonStatus->SetStateHide();
}
}
// --------------------------------------------------------------------------
// ::_Shell_LogonStatus_SetStateEnd
//
// Arguments: <none>
//
// Returns: <none>
//
// Purpose: External C entry point to tell the status host to terminate.
//
// History: 2000-05-11 vtan created
// --------------------------------------------------------------------------
EXTERN_C void _Shell_LogonStatus_SetStateEnd (void)
{
if (g_pLogonStatus != NULL)
{
g_pLogonStatus->SetStateEnd(true);
}
}
// --------------------------------------------------------------------------
// ::_Shell_LogonStatus_NotifyWait
//
// Arguments: <none>
//
// Returns: <none>
//
// Purpose: External C entry point to tell the status host to display a
// title stating the system is preparing to shut down.
//
// History: 2000-07-14 vtan created
// --------------------------------------------------------------------------
EXTERN_C void _Shell_LogonStatus_NotifyWait (void)
{
if (g_pLogonStatus != NULL)
{
g_pLogonStatus->NotifyWait();
}
}
// --------------------------------------------------------------------------
// ::_Shell_LogonStatus_NotifyNoAnimations
//
// Arguments: <none>
//
// Returns: <none>
//
// Purpose: External C entry point to tell the status host to no longer
// perform animations.
//
// History: 2001-03-21 vtan created
// --------------------------------------------------------------------------
EXTERN_C void _Shell_LogonStatus_NotifyNoAnimations (void)
{
if (g_pLogonStatus != NULL)
{
g_pLogonStatus->NotifyNoAnimations();
}
}
// --------------------------------------------------------------------------
// ::_Shell_LogonStatus_SelectUser
//
// Arguments: pszUsername = Username to select.
//
// Returns: <none>
//
// Purpose: External C entry point to tell the status host to select a
// specific user as being logged on.
//
// History: 2001-01-10 vtan created
// --------------------------------------------------------------------------
EXTERN_C void _Shell_LogonStatus_SelectUser (const WCHAR *pszUsername, const WCHAR *pszDomain)
{
if (g_pLogonStatus != NULL)
{
g_pLogonStatus->SelectUser(pszUsername, pszDomain);
}
}
// --------------------------------------------------------------------------
// ::_Shell_LogonStatus_InteractiveLogon
//
// Arguments: pszUsername = Username to logon.
// pszDomain = Domain to logon.
// pszPassword = Password to use.
//
// Returns: <none>
//
// Purpose: External C entry point to tell the status host to log the
// specified user on.
//
// History: 2001-01-12 vtan created
// --------------------------------------------------------------------------
EXTERN_C void _Shell_LogonStatus_InteractiveLogon (const WCHAR *pszUsername, const WCHAR *pszDomain, WCHAR *pszPassword)
{
if (g_pLogonStatus != NULL)
{
g_pLogonStatus->InteractiveLogon(pszUsername, pszDomain, pszPassword);
}
}
// --------------------------------------------------------------------------
// ::_Shell_LogonStatus_GetUIHost
//
// Arguments: <none>
//
// Returns: void*
//
// Purpose: External C entry point that returns a reference to the UI
// host object. This is returned as a void* because C doesn't
// understand C++ objects. The void* is cast to the appropriate
// type for use in CWLogonDialog.cpp so that it doesn't go and
// create a new instance of the object but increments the
// reference to this already existing object.
//
// History: 2000-05-11 vtan created
// --------------------------------------------------------------------------
EXTERN_C void* _Shell_LogonStatus_GetUIHost (void)
{
void *pResult;
if (g_pLogonStatus != NULL)
{
pResult = g_pLogonStatus->GetUIHost();
}
else
{
pResult = NULL;
}
return(pResult);
}
// --------------------------------------------------------------------------
// ::_Shell_LogonStatus_ResetReadyEvent
//
// Arguments: <none>
//
// Returns: HANDLE
//
// Purpose: Resets the ready event in case of UI host failure.
//
// History: 2001-01-09 vtan created
// --------------------------------------------------------------------------
EXTERN_C HANDLE _Shell_LogonStatus_ResetReadyEvent (void)
{
HANDLE hEvent;
if (g_pLogonStatus != NULL)
{
hEvent = g_pLogonStatus->ResetReadyEvent();
}
else
{
hEvent = NULL;
}
return(hEvent);
}
// --------------------------------------------------------------------------
// ::_Shell_LogonStatus_Show
//
// Arguments: <none>
//
// Returns: <none>
//
// Purpose: Shows the UI host.
//
// History: 2001-03-05 vtan created
// --------------------------------------------------------------------------
EXTERN_C void _Shell_LogonStatus_Show (void)
{
if (g_pLogonStatus != NULL)
{
g_pLogonStatus->ShowUIHost();
}
}
// --------------------------------------------------------------------------
// ::_Shell_LogonStatus_Hide
//
// Arguments: <none>
//
// Returns: <none>
//
// Purpose: Hides the UI host.
//
// History: 2001-03-05 vtan created
// --------------------------------------------------------------------------
EXTERN_C void _Shell_LogonStatus_Hide (void)
{
if (g_pLogonStatus != NULL)
{
g_pLogonStatus->HideUIHost();
}
}
// --------------------------------------------------------------------------
// ::_Shell_LogonStatus_IsHidden
//
// Arguments: <none>
//
// Returns: <none>
//
// Purpose: Returns whether the UI host is hidden.
//
// History: 2001-03-05 vtan created
// --------------------------------------------------------------------------
EXTERN_C BOOL _Shell_LogonStatus_IsHidden (void)
{
return((g_pLogonStatus != NULL) && g_pLogonStatus->IsUIHostHidden());
}
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