path: root/kdesktop/lock/lockprocess.cpp

//===========================================================================
//
// This file is part of the TDE project
//
// Copyright (c) 1999 Martin R. Jones <mjones@kde.org>
// Copyright (c) 2003 Oswald Buddenhagen <ossi@kde.org>
// Copyright (c) 2010 - 2015 Timothy Pearson <kb9vqf@pearsoncomputing.net>
//

//kdesktop keeps running and checks user inactivity
//when it should show screensaver (and maybe lock the session),
//it starts kdesktop_lock, who does all the locking and who
//actually starts the screensaver

//It's done this way to prevent screen unlocking when kdesktop
//crashes (e.g. because it's set to multiple wallpapers and
//some image will be corrupted).

#include <config.h>
#include <tdeglobal.h>

#ifdef WITH_TDEHWLIB
#include <ksslcertificate.h>
#include <kuser.h>
#include <tdehardwaredevices.h>
#include <tdecryptographiccarddevice.h>
#endif

#include "lockprocess.h"
#include "lockdlg.h"
#include "infodlg.h"
#include "querydlg.h"
#include "sakdlg.h"
#include "securedlg.h"
#include "autologout.h"
#include "kdesktopsettings.h"

#include <dmctl.h>
#include <dcopref.h>

#include <kstandarddirs.h>
#include <tdeapplication.h>
#include <kservicegroup.h>
#include <kdebug.h>
#include <tdemessagebox.h>
#include <tdeglobalsettings.h>
#include <tdelocale.h>
#include <klibloader.h>
#include <kpushbutton.h>
#include <kstdguiitem.h>
#include <kpixmapeffect.h>
#include <kpixmap.h>
#include <twin.h>
#include <twinmodule.h>
#include <kdialog.h>

#include <tqframe.h>
#include <tqlabel.h>
#include <tqlayout.h>
#include <tqcursor.h>
#include <tqtimer.h>
#include <tqfile.h>
#include <tqsocketnotifier.h>
#include <tqvaluevector.h>
#include <tqtooltip.h>
#include <tqimage.h>
#include <tqregexp.h>
#include <tqpainter.h>
#include <tqeventloop.h>

#include <tqdatetime.h>

#include <stdlib.h>
#include <assert.h>
#include <signal.h>
#ifdef HAVE_SETPRIORITY
#include <sys/time.h>
#include <sys/resource.h>
#endif
#include <stdio.h>
#include <sys/stat.h>
#include <unistd.h>
#include <errno.h>
#include <ctype.h>
#include <sys/types.h>
#include <fcntl.h>

#include <kcrash.h>

#include <pthread.h>

#include <X11/Xlib.h>
#include <X11/Xutil.h>
#include <X11/keysym.h>
#include <X11/Xatom.h>
#include <X11/Intrinsic.h>

#ifdef HAVE_DPMS
extern "C" {
#include <X11/Xmd.h>
#ifndef Bool
#define Bool BOOL
#endif
#include <X11/extensions/dpms.h>

#ifndef HAVE_DPMSINFO_PROTO
Status DPMSInfo ( Display *, CARD16 *, BOOL * );
#endif
}
#endif

#ifdef HAVE_XF86MISC
#include <X11/extensions/xf86misc.h>
#endif

#ifdef HAVE_GLXCHOOSEVISUAL
#include <GL/glx.h>
#endif

#define KDESKTOP_DEBUG_ID 1204

#define LOCK_GRACE_DEFAULT          5000
#define AUTOLOGOUT_DEFAULT          600

#define DESKTOP_WALLPAPER_OBTAIN_TIMEOUT_MS	3000

// Setting this define is INSECURE
// Use it for debugging purposes ONLY
// #define KEEP_MOUSE_UNGRABBED 1

// These lines are taken on 10/2009 from X.org (X11/XF86keysym.h), defining some special multimedia keys
#define XF86XK_AudioMute		0x1008FF12
#define XF86XK_AudioRaiseVolume		0x1008FF13
#define XF86XK_AudioLowerVolume		0x1008FF11
#define XF86XK_Display			0x1008FF59

// These lines are taken on 08/2013 from X.org (X11/XF86keysym.h), defining some special ACPI power keys
#define XF86XK_PowerOff			0x1008FF2A
#define XF86XK_Sleep			0x1008FF2F
#define XF86XK_Suspend			0x1008FFA7
#define XF86XK_Hibernate		0x1008FFA8

#define DPMS_MONITOR_BLANKED(x) ((x == DPMSModeStandby) || (x == DPMSModeSuspend) || (x == DPMSModeOff))

static Window gVRoot = 0;
static Window gVRootData = 0;
static Atom   gXA_VROOT;
static Atom   gXA_SCREENSAVER_VERSION;

Atom kde_wm_system_modal_notification = 0;
Atom kde_wm_transparent_to_desktop = 0;
Atom kde_wm_transparent_to_black = 0;

static void segv_handler(int)
{
	kdError(KDESKTOP_DEBUG_ID) << "A fatal exception was encountered."
		<< " Trapping and ignoring it so as not to compromise desktop security..."
		<< kdBacktrace() << endl;
	sleep(1);
}

extern Atom tqt_wm_state;
extern bool trinity_desktop_lock_use_system_modal_dialogs;
extern bool trinity_desktop_lock_delay_screensaver_start;
extern bool trinity_desktop_lock_use_sak;
extern bool trinity_desktop_lock_hide_active_windows;
extern bool trinity_desktop_lock_hide_cancel_button;
extern bool trinity_desktop_lock_forced;

extern LockProcess* trinity_desktop_lock_process;

extern bool argb_visual;
extern pid_t kdesktop_pid;

extern TQXLibWindowList trinity_desktop_lock_hidden_window_list;

bool trinity_desktop_lock_autohide_lockdlg = TRUE;

#define ENABLE_CONTINUOUS_LOCKDLG_DISPLAY \
if (!mForceContinualLockDisplayTimer->isActive()) mForceContinualLockDisplayTimer->start(100, FALSE); \
trinity_desktop_lock_autohide_lockdlg = FALSE; \
mHackDelayStartupTimer->stop();

#define DISABLE_CONTINUOUS_LOCKDLG_DISPLAY \
mForceContinualLockDisplayTimer->stop(); \
trinity_desktop_lock_autohide_lockdlg = TRUE; \
mHackDelayStartupTimer->stop();

//===========================================================================
//
// Screen saver handling process.  Handles screensaver window,
// starting screensaver hacks, and password entry.
//
LockProcess::LockProcess()
	: TQWidget(0L, "saver window", ((WFlags)(WStyle_StaysOnTop|WStyle_Customize|WStyle_NoBorder))),
	mOpenGLVisual(0),
	mParent(0),
	mShowLockDateTime(false),
	mSuspended(false),
	mVisibility(false),
	mRestoreXF86Lock(false),
	mForbidden(false),
	mAutoLogout(false),
	resizeTimer(NULL),
	hackResumeTimer(NULL),
	mVkbdProcess(NULL),
	mKWinModule(NULL),
	mPipeOpen(false),
	mPipeOpen_out(false),
	mInfoMessageDisplayed(false),
	mDialogControlLock(false),
	mForceReject(false),
	currentDialog(NULL),
	mEnsureScreenHiddenTimer(NULL),
	mForceContinualLockDisplayTimer(NULL),
	mEnsureVRootWindowSecurityTimer(NULL),
	mHackDelayStartupTimer(NULL),
	mHackDelayStartupTimeout(0),
	mHackStartupEnabled(true),
	mOverrideHackStartupEnabled(false),
	mResizingDesktopLock(false),
	mFullyOnlineSent(false),
	mClosingWindows(false),
	mInSecureDialog(false),
	mHackActive(false),
	m_rootPixmap(NULL),
	mBackingStartupDelayTimer(0),
	m_startupStatusDialog(NULL),
	m_mouseDown(0),
	m_mousePrevX(0),
	m_mousePrevY(0),
	m_dialogPrevX(0),
	m_dialogPrevY(0),
	m_notifyReadyRequested(false),
	m_loginCardDevice(NULL),
	m_maskWidget(NULL),
	m_saverRootWindow(0)
{
#ifdef KEEP_MOUSE_UNGRABBED
	setNFlags(WX11DisableMove|WX11DisableClose|WX11DisableShade|WX11DisableMinimize|WX11DisableMaximize);
#endif

	setupSignals();

	// Set up atoms
	kde_wm_system_modal_notification = XInternAtom(tqt_xdisplay(), "_TDE_WM_MODAL_SYS_NOTIFICATION", False);
	kde_wm_transparent_to_desktop = XInternAtom(tqt_xdisplay(), "_TDE_TRANSPARENT_TO_DESKTOP", False);
	kde_wm_transparent_to_black = XInternAtom(tqt_xdisplay(), "_TDE_TRANSPARENT_TO_BLACK", False);

	kapp->installX11EventFilter(this);

	mForceContinualLockDisplayTimer = new TQTimer( this );
	mHackDelayStartupTimer = new TQTimer( this );
	mEnsureVRootWindowSecurityTimer = new TQTimer( this );

	if (!argb_visual) {
		// Try to get the root pixmap
		if (!m_rootPixmap) m_rootPixmap = new KRootPixmap(this);
		connect(m_rootPixmap, TQT_SIGNAL(backgroundUpdated(const TQPixmap &)), this, TQT_SLOT(slotPaintBackground(const TQPixmap &)));
		m_rootPixmap->setCustomPainting(true);
		m_rootPixmap->start();
	}

	// Get root window attributes
	XWindowAttributes rootAttr;
	XGetWindowAttributes(tqt_xdisplay(), RootWindow(tqt_xdisplay(), tqt_xscreen()), &rootAttr);
	{ // trigger creation of QToolTipManager, it does XSelectInput() on the root window
		TQWidget w;
		TQToolTip::add( &w, "foo" );
	}
	XSelectInput( tqt_xdisplay(), tqt_xrootwin(), SubstructureNotifyMask | rootAttr.your_event_mask );

	// Add non-TDE path
	TDEGlobal::dirs()->addResourceType("scrsav",
					TDEGlobal::dirs()->kde_default("apps") +
					"System/ScreenSavers/");

	// Add KDE specific screensaver path
	TQString relPath="System/ScreenSavers/";
	KServiceGroup::Ptr servGroup = KServiceGroup::baseGroup( "screensavers");
	if (servGroup) {
		relPath=servGroup->relPath();
		kdDebug(KDESKTOP_DEBUG_ID) << "relPath=" << relPath << endl;
	}
	TDEGlobal::dirs()->addResourceType("scrsav",
					TDEGlobal::dirs()->kde_default("apps") +
					relPath);

	// virtual root property
	gXA_VROOT = XInternAtom (tqt_xdisplay(), "__SWM_VROOT", False);
	gXA_SCREENSAVER_VERSION = XInternAtom (tqt_xdisplay(), "_SCREENSAVER_VERSION", False);

	TQStringList dmopt = TQStringList::split(TQChar(','),
				TQString::fromLatin1( ::getenv( "XDM_MANAGED" )));
	for (TQStringList::ConstIterator it = dmopt.begin(); it != dmopt.end(); ++it) {
		if ((*it).startsWith("method=")) {
			mMethod = (*it).mid(7);
		}
	}

#ifdef WITH_TDEHWLIB
	// Initialize SmartCard readers
	TDEGenericDevice *hwdevice;
	TDEHardwareDevices *hwdevices = TDEGlobal::hardwareDevices();
	TDEGenericHardwareList cardReaderList = hwdevices->listByDeviceClass(TDEGenericDeviceType::CryptographicCard);
	for (hwdevice = cardReaderList.first(); hwdevice; hwdevice = cardReaderList.next()) {
		TDECryptographicCardDevice* cdevice = static_cast<TDECryptographicCardDevice*>(hwdevice);
		// connect(cdevice, SIGNAL(pinRequested(TQString,TDECryptographicCardDevice*)), this, SLOT(cryptographicCardPinRequested(TQString,TDECryptographicCardDevice*)));
		connect(cdevice, TQT_SIGNAL(certificateListAvailable(TDECryptographicCardDevice*)), this, TQT_SLOT(cryptographicCardInserted(TDECryptographicCardDevice*)));
		connect(cdevice, TQT_SIGNAL(cardRemoved(TDECryptographicCardDevice*)), this, TQT_SLOT(cryptographicCardRemoved(TDECryptographicCardDevice*)));
		cdevice->enableCardMonitoring(true);
		// cdevice->enablePINEntryCallbacks(true);
	}
#endif

#ifdef KEEP_MOUSE_UNGRABBED
	setEnabled(false);
#endif

	greetPlugin.library = 0;

	TDECrash::setCrashHandler(segv_handler);
}

//---------------------------------------------------------------------------
//
// Destructor - usual cleanups.
//
LockProcess::~LockProcess()
{
	mControlPipeHandler->terminateThread();
	mControlPipeHandlerThread->wait();
	delete mControlPipeHandler;
// 	delete mControlPipeHandlerThread;

	if (resizeTimer != NULL) {
		resizeTimer->stop();
		delete resizeTimer;
	}
	if (hackResumeTimer != NULL) {
		hackResumeTimer->stop();
		delete hackResumeTimer;
	}
	if (mEnsureScreenHiddenTimer != NULL) {
		mEnsureScreenHiddenTimer->stop();
		delete mEnsureScreenHiddenTimer;
	}
	if (mForceContinualLockDisplayTimer != NULL) {
		mForceContinualLockDisplayTimer->stop();
		delete mForceContinualLockDisplayTimer;
	}
	if (mHackDelayStartupTimer != NULL) {
		mHackDelayStartupTimer->stop();
		delete mHackDelayStartupTimer;
	}
	if (mEnsureVRootWindowSecurityTimer != NULL) {
		mEnsureVRootWindowSecurityTimer->stop();
		delete mEnsureVRootWindowSecurityTimer;
	}

	if (greetPlugin.library) {
		if (greetPlugin.info->done)
		greetPlugin.info->done();
		greetPlugin.library->unload();
	}

	if (m_rootPixmap) {
		m_rootPixmap->stop();
		delete m_rootPixmap;
	}

	mPipeOpen = false;
	mPipeOpen_out = false;
}

//---------------------------------------------------------------------------
//
// Initialization for startup
// This is where instance settings should be set--all objects should have already been created in the constructor above
//
void LockProcess::init(bool child, bool useBlankOnly)
{
	// Get root window size
	XWindowAttributes rootAttr;
	XGetWindowAttributes(tqt_xdisplay(), RootWindow(tqt_xdisplay(), tqt_xscreen()), &rootAttr);
	mRootWidth = rootAttr.width;
	mRootHeight = rootAttr.height;
	generateBackingImages();

	// Connect all signals
	connect( mForceContinualLockDisplayTimer, TQT_SIGNAL(timeout()), this, TQT_SLOT(displayLockDialogIfNeeded()) );
	connect( mHackDelayStartupTimer, TQT_SIGNAL(timeout()), this, TQT_SLOT(closeDialogAndStartHack()) );
	connect( mEnsureVRootWindowSecurityTimer, TQT_SIGNAL(timeout()), this, TQT_SLOT(repaintRootWindowIfNeeded()) );
	connect(tqApp, TQT_SIGNAL(mouseInteraction(XEvent *)), TQT_SLOT(slotMouseActivity(XEvent *)));
	connect(&mHackProc, TQT_SIGNAL(processExited(TDEProcess *)), TQT_SLOT(hackExited(TDEProcess *)));
	connect(&mSuspendTimer, TQT_SIGNAL(timeout()), TQT_SLOT(suspend()));

#ifdef HAVE_DPMS
	//if the user decided that the screensaver should run independent from
	//dpms, we shouldn't check for it, aleXXX
	if (KDesktopSettings::dpmsDependent()) {
		BOOL on;
		CARD16 state;
		if (DPMSInfo(tqt_xdisplay(), &state, &on)) {
			if (on) {
				connect(&mCheckDPMS, TQT_SIGNAL(timeout()), TQT_SLOT(checkDPMSActive()));
				// we can save CPU if we stop it as quickly as possible
				// but we waste CPU if we check too often -> so take 10s
				mCheckDPMS.start(10000);
			}
		}
	}
#endif

#if (TQT_VERSION-0 >= 0x030200) // XRANDR support
	connect( kapp->desktop(), TQT_SIGNAL( resized( int )), TQT_SLOT( desktopResized()));
#endif

	if (!trinity_desktop_lock_use_system_modal_dialogs) {
		setWFlags((WFlags)WX11BypassWM);
	}

	child_saver = child;
	mUseBlankOnly = useBlankOnly;

	mShowLockDateTime = KDesktopSettings::showLockDateTime();
	mlockDateTime = TQDateTime::currentDateTime();

	mHackDelayStartupTimeout = trinity_desktop_lock_delay_screensaver_start?KDesktopSettings::timeout()*1000:10*1000;
	mHackStartupEnabled = trinity_desktop_lock_use_system_modal_dialogs?KDesktopSettings::screenSaverEnabled():true;

	configure();

	mControlPipeHandlerThread = new TQEventLoopThread();
	mControlPipeHandler = new ControlPipeHandlerObject();
	mControlPipeHandler->mParent = this;
	mControlPipeHandler->moveToThread(mControlPipeHandlerThread);
	TQObject::connect(mControlPipeHandler, SIGNAL(processCommand(TQString)), this, SLOT(processInputPipeCommand(TQString)));
	TQTimer::singleShot(0, mControlPipeHandler, SLOT(run()));
	mControlPipeHandlerThread->start();
}

static int signal_pipe[2];

static void sigterm_handler(int)
{
	if ((!trinity_desktop_lock_process) || (!trinity_desktop_lock_process->inSecureDialog())) {
		// Exit uncleanly
		char tmp = 'U';
		if (::write( signal_pipe[1], &tmp, 1) == -1) {
			// Error handler to shut up gcc warnings
		}
	}
}

static void sighup_handler(int)
{
	char tmp = 'H';
	if (::write( signal_pipe[1], &tmp, 1) == -1) {
		// Error handler to shut up gcc warnings
	}
}

bool LockProcess::closeCurrentWindow()
{
	mClosingWindows = TRUE;
	if (currentDialog != NULL) {
		mForceReject = true;
		if (dynamic_cast<SAKDlg*>(currentDialog)) {
			dynamic_cast<SAKDlg*>(currentDialog)->closeDialogForced();
		}
		else if (dynamic_cast<SecureDlg*>(currentDialog)) {
			dynamic_cast<SecureDlg*>(currentDialog)->closeDialogForced();
		}
		else {
			currentDialog->close();
		}
	}

	if( mDialogs.isEmpty() ) {
		mClosingWindows = FALSE;
		mForceReject = false;
		return false;
	}
	else {
		mClosingWindows = TRUE;
		return true;
	}
}

void LockProcess::timerEvent(TQTimerEvent *ev)
{
	if (mAutoLogout && ev->timerId() == mAutoLogoutTimerId) {
		killTimer(mAutoLogoutTimerId);
		AutoLogout autologout(this);
		execDialog(&autologout);
	}
}

void LockProcess::resizeEvent(TQResizeEvent *)
{
	//
}

void LockProcess::setupSignals()
{
	struct sigaction act;
	// ignore SIGINT
	act.sa_handler=SIG_IGN;
	sigemptyset(&(act.sa_mask));
	sigaddset(&(act.sa_mask), SIGINT);
	act.sa_flags = 0;
	sigaction(SIGINT, &act, 0L);
	// ignore SIGQUIT
	act.sa_handler=SIG_IGN;
	sigemptyset(&(act.sa_mask));
	sigaddset(&(act.sa_mask), SIGQUIT);
	act.sa_flags = 0;
	sigaction(SIGQUIT, &act, 0L);
	// exit uncleanly on SIGTERM
	act.sa_handler= sigterm_handler;
	sigemptyset(&(act.sa_mask));
	sigaddset(&(act.sa_mask), SIGTERM);
	act.sa_flags = 0;
	sigaction(SIGTERM, &act, 0L);
	// SIGHUP forces lock
	act.sa_handler= sighup_handler;
	sigemptyset(&(act.sa_mask));
	sigaddset(&(act.sa_mask), SIGHUP);
	act.sa_flags = 0;
	sigaction(SIGHUP, &act, 0L);

	if (pipe(signal_pipe) == -1) {
		// Error handler to shut up gcc warnings
	}
	TQSocketNotifier* notif = new TQSocketNotifier(signal_pipe[0], TQSocketNotifier::Read, TQT_TQOBJECT(this) );
	connect( notif, TQT_SIGNAL(activated(int)), TQT_SLOT(signalPipeSignal()));
}


void LockProcess::signalPipeSignal()
{
	char tmp;
	if (::read( signal_pipe[0], &tmp, 1) == -1) {
		// Error handler to shut up gcc warnings
	}
	if( tmp == 'T' ) {
		quitSaver();
	}
	else if( tmp == 'H' ) {
		if( !mLocked )
		startLock();
	}
	else if( tmp == 'U' ) {
		// Exit uncleanly
		quitSaver();
		exit(1);
	}
}

//---------------------------------------------------------------------------
bool LockProcess::lock()
{
#ifdef USE_SECURING_DESKTOP_NOTIFICATION
	m_startupStatusDialog = new KSMModalDialog(this);
	m_startupStatusDialog->setStatusMessage(i18n("Securing desktop session").append("..."));
	m_startupStatusDialog->show();
	m_startupStatusDialog->setActiveWindow();
	tqApp->processEvents();
#endif

	if (startSaver(true)) {
		// In case of a forced lock we don't react to events during
		// the dead-time to give the screensaver some time to activate.
		// That way we don't accidentally show the password dialog before
		// the screensaver kicks in because the user moved the mouse after
		// selecting "lock screen", that looks really untidy.
		mBusy = true;
		if (startLock()) {
			TQTimer::singleShot(1000, this, TQT_SLOT(slotDeadTimePassed()));
			return true;
		}
		stopSaver();
		mBusy = false;
	}
	return false;
}
//---------------------------------------------------------------------------
void LockProcess::slotDeadTimePassed()
{
	mBusy = false;
}

//---------------------------------------------------------------------------
bool LockProcess::defaultSave()
{
	mLocked = false;
	mOverrideHackStartupEnabled = true;
	if (startSaver()) {
		if (mLockGrace >= 0) {
			TQTimer::singleShot(mLockGrace, this, TQT_SLOT(startLock()));
		}
		return true;
	}
	mOverrideHackStartupEnabled = false;
	return false;
}

//---------------------------------------------------------------------------
bool LockProcess::dontLock()
{
	mLocked = false;
	return startSaver();
}

//---------------------------------------------------------------------------
void LockProcess::quitSaver()
{
	DISABLE_CONTINUOUS_LOCKDLG_DISPLAY
	if (closeCurrentWindow()) {
		TQTimer::singleShot( 0, this, SLOT(quitSaver()) );
		return;
	}
	stopSaver();
	kapp->quit();
}

//---------------------------------------------------------------------------
void LockProcess::startSecureDialog()
{
	if ((backingPixmap.isNull()) && (mBackingStartupDelayTimer < 100)) {
		TQTimer::singleShot(10, this, TQT_SLOT(startSecureDialog()));
		mBackingStartupDelayTimer++;
		return;
	}

	setGeometry(0, 0, mRootWidth, mRootHeight);
	saverReadyIfNeeded();

	int ret;
	SecureDlg inDlg( this );
	inDlg.setRetInt(&ret);
	mBusy = true;
	execDialog( &inDlg );
	mBusy = false;
	bool forcecontdisp = mForceContinualLockDisplayTimer->isActive();
	if (forcecontdisp) {
		DISABLE_CONTINUOUS_LOCKDLG_DISPLAY
	}
	mInSecureDialog = false;
	if (ret == 0) {
		mClosingWindows = 1;
		kapp->quit();
	}
	if (ret == 1) {
		// In case of a forced lock we don't react to events during
		// the dead-time to give the screensaver some time to activate.
		// That way we don't accidentally show the password dialog before
		// the screensaver kicks in because the user moved the mouse after
		// selecting "lock screen", that looks really untidy.
		mBusy = true;
		trinity_desktop_lock_forced = true;
		// Make sure the cursor is not showing busy status
		setCursor( tqarrowCursor );
		if (startLock())
		{
			if (trinity_desktop_lock_delay_screensaver_start) {
				mBusy = false;
			}
			else {
				TQTimer::singleShot(1000, this, TQT_SLOT(slotDeadTimePassed()));
			}
			if (trinity_desktop_lock_delay_screensaver_start && trinity_desktop_lock_forced && trinity_desktop_lock_use_system_modal_dialogs) {
				ENABLE_CONTINUOUS_LOCKDLG_DISPLAY
				if (mHackStartupEnabled) mHackDelayStartupTimer->start(mHackDelayStartupTimeout, TRUE);
			}
			else {
				if (mHackStartupEnabled == true) {
					startHack();
				}
				else {
					if (trinity_desktop_lock_use_system_modal_dialogs == true) {
						ENABLE_CONTINUOUS_LOCKDLG_DISPLAY
						if (mHackStartupEnabled) mHackDelayStartupTimer->start(mHackDelayStartupTimeout, TRUE);
					}
					else {
						startHack();
					}
				}
			}
			return;
		}
		stopSaver();
		mBusy = false;
		return;
	}
	if (ret == 2) {
		mClosingWindows = 1;
		if (system("ksysguard &") == -1) {
                    // Error handler to shut up gcc warnings
                }
		kapp->quit();
	}
	if (ret == 3) {
		mClosingWindows = 1;
		DCOPRef("ksmserver","ksmserver").send("logout", (int)TDEApplication::ShutdownConfirmYes, (int)TDEApplication::ShutdownTypeNone, (int)TDEApplication::ShutdownModeInteractive);
		kapp->quit();
	}
	// FIXME
	// Handle remaining case (switch user)
	if (forcecontdisp) {
		ENABLE_CONTINUOUS_LOCKDLG_DISPLAY
		if (mHackStartupEnabled) mHackDelayStartupTimer->start(mHackDelayStartupTimeout, TRUE);
	}
	stopSaver();
}

bool LockProcess::runSecureDialog()
{
#ifdef USE_SECURING_DESKTOP_NOTIFICATION
	m_startupStatusDialog = new KSMModalDialog(this);
	m_startupStatusDialog->setStatusMessage(i18n("Securing desktop session").append("..."));
	m_startupStatusDialog->show();
	m_startupStatusDialog->setActiveWindow();
	tqApp->processEvents();
#endif

	mInSecureDialog = true;
	if (startSaver()) {
		mBackingStartupDelayTimer = 0;
		TQTimer::singleShot(0, this, TQT_SLOT(startSecureDialog()));
		return true;
	}
	else {
		mInSecureDialog = false;
		return false;
	}
}

bool LockProcess::inSecureDialog()
{
	return mInSecureDialog;
}

//---------------------------------------------------------------------------
//
// Read and apply configuration.
//
void LockProcess::configure()
{
	// the configuration is stored in kdesktop's config file
	if( KDesktopSettings::lock() ) {
		mLockGrace = KDesktopSettings::lockGrace();
		if (mLockGrace < 0)
		mLockGrace = 0;
		else if (mLockGrace > 300000)
		mLockGrace = 300000; // 5 minutes, keep the value sane
	}
	else
		mLockGrace = -1;

	if ( KDesktopSettings::autoLogout() ) {
		mAutoLogout = true;
		mAutoLogoutTimeout = KDesktopSettings::autoLogoutTimeout();
		mAutoLogoutTimerId = startTimer(mAutoLogoutTimeout * 1000); // in milliseconds
	}

	mPriority = KDesktopSettings::priority();
	if (mPriority < 0) mPriority = 0;
	if (mPriority > 19) mPriority = 19;

	mSaver = KDesktopSettings::saver();
	if (mSaver.isEmpty() || mUseBlankOnly) {
		mSaver = "KBlankscreen.desktop";
	}
	if (!trinity_desktop_lock_use_system_modal_dialogs) {
		if (KDesktopSettings::screenSaverEnabled() == false) {
		mSaver = "";
		mSaverExec = "";
		}
	}

	readSaver();

	mPlugins = KDesktopSettings::pluginsUnlock();
	if (mPlugins.isEmpty()) {
		mPlugins = TQStringList("classic");
	}
	mPluginOptions = KDesktopSettings::pluginOptions();
}

//---------------------------------------------------------------------------
//
// Read the command line needed to run the screensaver given a .desktop file.
//
void LockProcess::readSaver()
{
	if (!mSaver.isEmpty()) {
		TQString file = locate("scrsav", mSaver);

		bool opengl = kapp->authorize("opengl_screensavers");
		bool manipulatescreen = kapp->authorize("manipulatescreen_screensavers");
		KDesktopFile config(file, true);
		if (config.readEntry("X-TDE-Type").utf8() != 0) {
			TQString saverType = config.readEntry("X-TDE-Type").utf8();
			TQStringList saverTypes = TQStringList::split(";", saverType);
			for (uint i = 0; i < saverTypes.count(); i++) {
				if ((saverTypes[i] == "ManipulateScreen") && !manipulatescreen) {
					kdDebug(KDESKTOP_DEBUG_ID) << "Screensaver is type ManipulateScreen and ManipulateScreen is forbidden" << endl;
					mForbidden = true;
				}
				if ((saverTypes[i] == "OpenGL") && !opengl) {
					kdDebug(KDESKTOP_DEBUG_ID) << "Screensaver is type OpenGL and OpenGL is forbidden" << endl;
					mForbidden = true;
				}
				if (saverTypes[i] == "OpenGL") {
					mOpenGLVisual = true;
				}
			}
		}

		kdDebug(KDESKTOP_DEBUG_ID) << "mForbidden: " << (mForbidden ? "true" : "false") << endl;

		if (trinity_desktop_lock_use_system_modal_dialogs) {
			if (config.hasActionGroup("InWindow")) {
				config.setActionGroup("InWindow");
				mSaverExec = config.readPathEntry("Exec");
			}
		}
		else {
			if (config.hasActionGroup("Root")) {
				config.setActionGroup("Root");
				mSaverExec = config.readPathEntry("Exec");
			}
		}
	}
}

//---------------------------------------------------------------------------
//
// Create a window to draw our screen saver on.
//
void LockProcess::createSaverWindow()
{
	Visual* visual = CopyFromParent;
	XSetWindowAttributes attrs;
	XVisualInfo* info = NULL;
	int flags = trinity_desktop_lock_use_system_modal_dialogs?0:CWOverrideRedirect;
#ifdef HAVE_GLXCHOOSEVISUAL
	if( mOpenGLVisual ) {
		static int attribs[][ 15 ] = {
			#define R GLX_RED_SIZE
			#define G GLX_GREEN_SIZE
			#define B GLX_BLUE_SIZE
			{ GLX_RGBA, R, 8, G, 8, B, 8, GLX_DEPTH_SIZE, 8, GLX_DOUBLEBUFFER, GLX_STENCIL_SIZE, 1, None },
			{ GLX_RGBA, R, 4, G, 4, B, 4, GLX_DEPTH_SIZE, 4, GLX_DOUBLEBUFFER, GLX_STENCIL_SIZE, 1, None },
			{ GLX_RGBA, R, 8, G, 8, B, 8, GLX_DEPTH_SIZE, 8, GLX_DOUBLEBUFFER, None },
			{ GLX_RGBA, R, 4, G, 4, B, 4, GLX_DEPTH_SIZE, 4, GLX_DOUBLEBUFFER, None },
			{ GLX_RGBA, R, 8, G, 8, B, 8, GLX_DEPTH_SIZE, 8, GLX_STENCIL_SIZE, 1, None },
			{ GLX_RGBA, R, 4, G, 4, B, 4, GLX_DEPTH_SIZE, 4, GLX_STENCIL_SIZE, 1, None },
			{ GLX_RGBA, R, 8, G, 8, B, 8, GLX_DEPTH_SIZE, 8, None },
			{ GLX_RGBA, R, 4, G, 4, B, 4, GLX_DEPTH_SIZE, 4, None },
			{ GLX_RGBA, GLX_DEPTH_SIZE, 8, GLX_DOUBLEBUFFER, GLX_STENCIL_SIZE, 1, None },
			{ GLX_RGBA, GLX_DEPTH_SIZE, 8, GLX_DOUBLEBUFFER, None },
			{ GLX_RGBA, GLX_DEPTH_SIZE, 8, GLX_STENCIL_SIZE, 1, None },
			{ GLX_RGBA, GLX_DEPTH_SIZE, 8, None }
			#undef R
			#undef G
			#undef B
		};
		for( unsigned int i = 0; i < sizeof( attribs ) / sizeof( attribs[ 0 ] ); ++i ) {
			int n_glxfb_configs;
			GLXFBConfig *fbc = glXChooseFBConfig( x11Display(), x11Screen(), attribs[ i ], &n_glxfb_configs);
			if (!fbc) {
				n_glxfb_configs = 0;
			}
			for( int j = 0; j < n_glxfb_configs; j++ ) {
				info = glXGetVisualFromFBConfig(x11Display(), fbc[j]);
				if( info ) {
					if (argb_visual) {
						// Xorg can only use GPU compositing for ARGB32 8:8:8:8 visuals
						// Ensure the selected visual is 8 bits per RGB
						// Selecting a non-8-bit visual will result in stuttering and high
						// CPU load, while Xorg tries to composite each frame on the CPU!
						if ((info->depth < 32) || (info->bits_per_rgb != 8)) {
							XFree( info );
							info = NULL;
							continue;
						}
					}
					visual = info->visual;
					static Colormap colormap = 0;
					if( colormap != 0 ) {
						XFreeColormap( x11Display(), colormap );
					}
					colormap = XCreateColormap( x11Display(), RootWindow( x11Display(), x11Screen()), visual, AllocNone );
					attrs.colormap = colormap;
					flags |= CWColormap;
					break;
				}
			}
			if (flags & CWColormap) {
				break;
			}
		}
		if ( !info ) {
			printf("[WARNING] Unable to locate matching X11 GLX Visual; this OpenGL application may not function correctly!\n");
		}
	}
#endif

	attrs.override_redirect = 1;
	hide();

	if (argb_visual) {
		// The GL visual selection can return a visual with invalid depth
		// Check for this and use a fallback visual if needed
		if (info && (info->depth < 32)) {
			printf("[WARNING] Unable to locate matching X11 GLX Visual; this OpenGL application may not function correctly!\n");
			XFree( info );
			info = NULL;
			flags &= ~CWColormap;
		}

		attrs.background_pixel = 0;
		attrs.border_pixel = 0;
		flags |= CWBackPixel;
		flags |= CWBorderPixel;
		if (!(flags & CWColormap)) {
			if (!info) {
				info = new XVisualInfo;
				if (!XMatchVisualInfo( x11Display(), x11Screen(), 32, TrueColor, info )) {
				printf("[ERROR] Unable to locate matching X11 Visual; this application will not function correctly!\n");
				free(info);
				info = NULL;
				}
			}
			if (info) {
				visual = info->visual;
				attrs.colormap = XCreateColormap( x11Display(), RootWindow( x11Display(), x11Screen()), visual, AllocNone );
				flags |= CWColormap;
			}
		}
	}
	if (info) {
		XFree( info );
	}

	m_saverRootWindow = XCreateWindow( x11Display(), RootWindow( x11Display(), x11Screen()), x(), y(), width(), height(), 0, x11Depth(), InputOutput, visual, flags, &attrs );
	create( m_saverRootWindow );

	// Some xscreensaver hacks check for this property
	const char *version = "KDE 2.0";
	XChangeProperty (tqt_xdisplay(), winId(),
			gXA_SCREENSAVER_VERSION, XA_STRING, 8, PropModeReplace,
			(unsigned char *) version, strlen(version));

	XSetWindowAttributes attr;
	attr.event_mask = KeyPressMask | ButtonPressMask | PointerMotionMask | VisibilityChangeMask | ExposureMask;
	XChangeWindowAttributes(tqt_xdisplay(), winId(), CWEventMask, &attr);

	// Signal that we want to be transparent to the desktop, not to windows behind us...
	XChangeProperty(tqt_xdisplay(), m_saverRootWindow, kde_wm_transparent_to_desktop, XA_INTEGER, 32, PropModeReplace, (unsigned char *) "TRUE", 1L);

	// erase();

	// set NoBackground so that the saver can capture the current
	// screen state if necessary
	// this is a security risk and has been deactivated--welcome to the 21st century folks!
	// setBackgroundMode(TQWidget::NoBackground);

	setGeometry(0, 0, mRootWidth, mRootHeight);
	saverReadyIfNeeded();

	// HACK
	// Hide all tooltips and notification windows
	{
		Window rootWindow = RootWindow(x11Display(), x11Screen());
		Window parent;
		Window* children = NULL;
		unsigned int noOfChildren = 0;
		XWindowAttributes childAttr;
		Window childTransient;

		if (XQueryTree(x11Display(), rootWindow, &rootWindow, &parent, &children, &noOfChildren) && noOfChildren>0 ) {
			for (unsigned int i=0; i<noOfChildren; i++) {
				if (XGetWindowAttributes(x11Display(), children[i], &childAttr) && XGetTransientForHint(x11Display(), children[i], &childTransient)) {
					if ((childAttr.map_state == IsViewable) && (childAttr.override_redirect) && (childTransient)) {
						if (!trinity_desktop_lock_hidden_window_list.contains(children[i])) {
						trinity_desktop_lock_hidden_window_list.append(children[i]);
						}
						XLowerWindow(x11Display(), children[i]);
						XFlush(x11Display());
					}
				}
			}
		}
	}

	kdDebug(KDESKTOP_DEBUG_ID) << "Saver window Id: " << winId() << endl;
}

void LockProcess::desktopResized()
{
	// Get root window size
	XWindowAttributes rootAttr;
	XGetWindowAttributes(tqt_xdisplay(), RootWindow(tqt_xdisplay(), tqt_xscreen()), &rootAttr);
	if ((rootAttr.width == mRootWidth) && (rootAttr.height == mRootHeight)) {
		return;
	}
	mRootWidth = rootAttr.width;
	mRootHeight = rootAttr.height;
	generateBackingImages();

	mBusy = true;
	mHackDelayStartupTimer->stop();
	stopHack();
	DISABLE_CONTINUOUS_LOCKDLG_DISPLAY
	mResizingDesktopLock = true;

	backingPixmap = TQPixmap();

	if (trinity_desktop_lock_use_system_modal_dialogs) {
		// Temporarily hide the entire screen with a new override redirect window
		if (m_maskWidget) {
			m_maskWidget->setGeometry(0, 0, mRootWidth, mRootHeight);
		}
		else {
			m_maskWidget = new TQWidget(0, 0, TQt::WStyle_StaysOnTop | TQt::WX11BypassWM);
			m_maskWidget->setGeometry(0, 0, mRootWidth, mRootHeight);
			m_maskWidget->setBackgroundColor(TQt::black);
			m_maskWidget->erase();
			m_maskWidget->show();
		}
		XSync(tqt_xdisplay(), False);
		saverReadyIfNeeded();

		if (mEnsureScreenHiddenTimer) {
			mEnsureScreenHiddenTimer->stop();
		}
		else {
			mEnsureScreenHiddenTimer = new TQTimer( this );
			connect( mEnsureScreenHiddenTimer, TQT_SIGNAL(timeout()), this, TQT_SLOT(slotForcePaintBackground()) );
		}
		mEnsureScreenHiddenTimer->start(DESKTOP_WALLPAPER_OBTAIN_TIMEOUT_MS, true);
	}

	// Resize the background widget
	setGeometry(0, 0, mRootWidth, mRootHeight);
	XSync(tqt_xdisplay(), False);
	saverReadyIfNeeded();

	// Black out the background widget to hide ugly resize tiling artifacts
	if (argb_visual) {
		setTransparentBackgroundARGB();
	}
	else {
		setBackgroundColor(black);
	}
	erase();

	// This slot needs to be able to execute very rapidly so as to prevent the user's desktop from ever
	// being displayed, so we finish the hack restarting/display prettying operations in a separate timed slot
	if (resizeTimer == NULL) {
		resizeTimer = new TQTimer( this );
		connect( resizeTimer, TQT_SIGNAL(timeout()), this, TQT_SLOT(doDesktopResizeFinish()) );
	}
	resizeTimer->start( 100, TRUE ); // 100 millisecond single shot timer; should allow display switching operations to finish before hack is started
}

void LockProcess::doDesktopResizeFinish()
{
	while (mDialogControlLock == true) {
		usleep(100000);
	}
	mDialogControlLock = true;
	if (closeCurrentWindow()) {
		TQTimer::singleShot( 0, this, SLOT(doDesktopResizeFinish()) );
		mDialogControlLock = false;
		return;
	}
	mDialogControlLock = false;

	// Restart the hack as the window size is now different
	if (trinity_desktop_lock_delay_screensaver_start && trinity_desktop_lock_use_system_modal_dialogs) {
		ENABLE_CONTINUOUS_LOCKDLG_DISPLAY
		if (mHackStartupEnabled) mHackDelayStartupTimer->start(mHackDelayStartupTimeout, TRUE);
	}
	else {
		if (mHackStartupEnabled == true) {
			startHack();
		}
		else {
			if (trinity_desktop_lock_use_system_modal_dialogs == true) {
				ENABLE_CONTINUOUS_LOCKDLG_DISPLAY
				if (mHackStartupEnabled) mHackDelayStartupTimer->start(mHackDelayStartupTimeout, TRUE);
			}
			else {
				startHack();
			}
		}
	}

        mResizingDesktopLock = false;
	mBusy = false;
}

//---------------------------------------------------------------------------
//
// Hide the screensaver window
//
void LockProcess::hideSaverWindow()
{
	hide();
	lower();
	removeVRoot(winId());
	XDeleteProperty(tqt_xdisplay(), winId(), gXA_SCREENSAVER_VERSION);
	if ( gVRoot ) {
		unsigned long vroot_data[1] = { gVRootData };
		XChangeProperty(tqt_xdisplay(), gVRoot, gXA_VROOT, XA_WINDOW, 32,
				PropModeReplace, (unsigned char *)vroot_data, 1);
		gVRoot = 0;
	}
	XSync(tqt_xdisplay(), False);
}

//---------------------------------------------------------------------------
static int ignoreXError(Display *, XErrorEvent *)
{
	return 0;
}

//---------------------------------------------------------------------------
//
// Save the current virtual root window
//
void LockProcess::saveVRoot()
{
	Window rootReturn, parentReturn, *children;
	unsigned int numChildren;
	Window root = RootWindowOfScreen(ScreenOfDisplay(tqt_xdisplay(), tqt_xscreen()));

	gVRoot = 0;
	gVRootData = 0;

	int (*oldHandler)(Display *, XErrorEvent *);
	oldHandler = XSetErrorHandler(ignoreXError);

	if (XQueryTree(tqt_xdisplay(), root, &rootReturn, &parentReturn, &children, &numChildren)) {
		for (unsigned int i = 0; i < numChildren; i++) {
			Atom actual_type;
			int actual_format;
			unsigned long nitems, bytesafter;
			unsigned char *newRoot = 0;

			if ((XGetWindowProperty(tqt_xdisplay(), children[i], gXA_VROOT, 0, 1,
				False, XA_WINDOW, &actual_type, &actual_format, &nitems, &bytesafter,
				&newRoot) == Success) && newRoot) {
				gVRoot = children[i];
				Window *dummy = (Window*)newRoot;
				gVRootData = *dummy;
				XFree ((char*) newRoot);
				break;
			}
		}
		if (children) {
			XFree((char *)children);
		}
	}

	XSetErrorHandler(oldHandler);
}

//---------------------------------------------------------------------------
//
// Set the virtual root property
//
void LockProcess::setVRoot(Window win, Window vr)
{
	if (gVRoot) {
		removeVRoot(gVRoot);
	}

	unsigned long rw = RootWindowOfScreen(ScreenOfDisplay(tqt_xdisplay(), tqt_xscreen()));
	unsigned long vroot_data[1] = { vr };

	Window rootReturn;
	Window parentReturn;
	Window *children = NULL;
	unsigned int numChildren;
	Window top = win;
	while (1) {
		if (XQueryTree(tqt_xdisplay(), top, &rootReturn, &parentReturn, &children, &numChildren) == 0) {
			printf("[WARNING] XQueryTree() failed!\n"); fflush(stdout);
			break;
		}
		if (children) {
			XFree((char *)children);
		}
		if (parentReturn == rw) {
			break;
		}
		else {
			top = parentReturn;
		}
	}

	XChangeProperty(tqt_xdisplay(), top, gXA_VROOT, XA_WINDOW, 32, PropModeReplace, (unsigned char *)vroot_data, 1);
}

//---------------------------------------------------------------------------
//
// Remove the virtual root property
//
void LockProcess::removeVRoot(Window win)
{
	XDeleteProperty (tqt_xdisplay(), win, gXA_VROOT);
}

//---------------------------------------------------------------------------
//
// Grab the keyboard. Returns true on success
//
bool LockProcess::grabKeyboard()
{
	int rv = XGrabKeyboard( tqt_xdisplay(), TQApplication::desktop()->winId(),
		True, GrabModeAsync, GrabModeAsync, CurrentTime );

	if (rv != GrabSuccess) {
		kdWarning(1204) << "LockProcess::grabKeyboard() failed: " << rv << endl;
	}
	return (rv == GrabSuccess);
}

#define GRABEVENTS ButtonPressMask | ButtonReleaseMask | PointerMotionMask | \
		   EnterWindowMask | LeaveWindowMask

//---------------------------------------------------------------------------
//
// Grab the mouse.  Returns true on success
//
bool LockProcess::grabMouse()
{
	HANDLE cursorHandle;
	if (mHackActive) {
		cursorHandle = TQCursor(tqblankCursor).handle();
	}
	else {
		cursorHandle = TQCursor(tqbusyCursor).handle();
	}
	int rv = XGrabPointer( tqt_xdisplay(), TQApplication::desktop()->winId(),
		True, GRABEVENTS, GrabModeAsync, GrabModeAsync, None,
		cursorHandle, CurrentTime );

	if (rv != GrabSuccess) {
		kdWarning(1204) << "LockProcess::grabMouse() failed: " << rv << endl;
	}
	return (rv == GrabSuccess);
}

//---------------------------------------------------------------------------
//
// Grab keyboard and mouse.  Returns true on success.
//
bool LockProcess::grabInput()
{
	XSync(tqt_xdisplay(), False);

	if (!grabKeyboard()) {
		usleep(100000);
		if (!grabKeyboard()) {
			return false;
		}
	}

#ifndef KEEP_MOUSE_UNGRABBED
	if (!grabMouse()) {
		usleep(100000);
		if (!grabMouse()) {
			XUngrabKeyboard(tqt_xdisplay(), CurrentTime);
			return false;
		}
	}
#endif

	lockXF86();

	return true;
}

//---------------------------------------------------------------------------
//
// Release mouse an keyboard grab.
//
void LockProcess::ungrabInput()
{
	XUngrabKeyboard(tqt_xdisplay(), CurrentTime);
	XUngrabPointer(tqt_xdisplay(), CurrentTime);
	unlockXF86();
}

//---------------------------------------------------------------------------
//
// Generate requisite backing images for ARGB mode
//
void LockProcess::generateBackingImages()
{
	if (argb_visual) {
		mArgbTransparentBackgroundPixmap.resize(mRootWidth, mRootHeight);
		TQPainter p;
		p.begin( &mArgbTransparentBackgroundPixmap );
		p.fillRect( 0, 0, mArgbTransparentBackgroundPixmap.width(), mArgbTransparentBackgroundPixmap.height(), TQBrush(tqRgba(0, 0, 0, 0)) );
		p.end();
	}
}

//---------------------------------------------------------------------------
//
// Set a fully transparent ARGB background image.
//
void LockProcess::setTransparentBackgroundARGB()
{
	// eliminate nasty flicker on first show
	setBackgroundPixmap( mArgbTransparentBackgroundPixmap );
}

void LockProcess::saverReadyIfNeeded()
{
	if (m_notifyReadyRequested) {
		// Make sure the desktop is hidden before notifying the desktop that the saver is running
		m_notifyReadyRequested = false;
		saverReady();
		fullyOnline();
	}
}

//---------------------------------------------------------------------------
//
// Start the screen saver.
//
bool LockProcess::startSaver(bool notify_ready)
{
	if (!child_saver && !grabInput())
	{
		kdWarning(KDESKTOP_DEBUG_ID) << "LockProcess::startSaver() grabInput() failed!!!!" << endl;
		return false;
	}
	mBusy = false;

	// eliminate nasty flicker on first show
	setTransparentBackgroundARGB();

	saveVRoot();

	if (mParent) {
		TQSocketNotifier *notifier = new TQSocketNotifier(mParent, TQSocketNotifier::Read, TQT_TQOBJECT(this), "notifier");
		connect(notifier, TQT_SIGNAL( activated (int)), TQT_SLOT( quitSaver()));
	}
	createSaverWindow();
	move(0, 0);
	show();

	raise();
	XSync(tqt_xdisplay(), False);
	setVRoot( winId(), winId() );

	if (!trinity_desktop_lock_hide_active_windows) {
		if (m_rootPixmap) m_rootPixmap->stop();
		TQPixmap rootWinSnapShot = TQPixmap::grabWindow(TQApplication::desktop()->winId());
		slotPaintBackground(rootWinSnapShot);
	}

	if (((!(trinity_desktop_lock_delay_screensaver_start && trinity_desktop_lock_forced)) && (!mInSecureDialog)) && (mHackStartupEnabled || mOverrideHackStartupEnabled)) {
		if (argb_visual) {
			setTransparentBackgroundARGB();
		}
		else {
			if (backingPixmap.isNull()) {
				setBackgroundColor(black);
			}
			else {
				setBackgroundPixmap(backingPixmap);
			}
		}
		setGeometry(0, 0, mRootWidth, mRootHeight);
		erase();

		if (notify_ready) {
			m_notifyReadyRequested = false;
			saverReady();
			fullyOnline();
		}
	}
	else {
		if (notify_ready) {
			m_notifyReadyRequested = true;
		}
	}

	if (mInSecureDialog == FALSE) {
		if (trinity_desktop_lock_delay_screensaver_start && trinity_desktop_lock_forced && trinity_desktop_lock_use_system_modal_dialogs) {
			ENABLE_CONTINUOUS_LOCKDLG_DISPLAY
			if (mHackStartupEnabled) mHackDelayStartupTimer->start(mHackDelayStartupTimeout, TRUE);
		}
		else {
			if (mHackStartupEnabled || mOverrideHackStartupEnabled) {
				mOverrideHackStartupEnabled = false;
				startHack();
			}
			else {
				if (trinity_desktop_lock_use_system_modal_dialogs == true) {
					ENABLE_CONTINUOUS_LOCKDLG_DISPLAY
					if (mHackStartupEnabled) mHackDelayStartupTimer->start(mHackDelayStartupTimeout, TRUE);
				}
				else {
					startHack();
				}
			}
		}
	}

	return true;
}

//---------------------------------------------------------------------------
//
// Stop the screen saver.
//
void LockProcess::stopSaver()
{
	kdDebug(KDESKTOP_DEBUG_ID) << "LockProcess: stopping saver" << endl;
	mHackProc.kill(SIGCONT);
	stopHack();
	mSuspended = false;
	hideSaverWindow();
	mVisibility = false;
	if (!child_saver) {
		if (mLocked) {
			DM().setLock( false );
		}
		ungrabInput();
		const char *out = "GOAWAY!";
		for (TQValueList<int>::ConstIterator it = child_sockets.begin(); it != child_sockets.end(); ++it) {
			if (write(*it, out, sizeof(out)) == -1) {
				// Error handler to shut up gcc warnings
			}
		}
	}
}

// private static
TQVariant LockProcess::getConf(void *ctx, const char *key, const TQVariant &dflt)
{
	LockProcess *that = (LockProcess *)ctx;
	TQString fkey = TQString::fromLatin1( key ) + '=';
	for (TQStringList::ConstIterator it = that->mPluginOptions.begin(); it != that->mPluginOptions.end(); ++it) {
		if ((*it).startsWith( fkey )) {
			return (*it).mid( fkey.length() );
		}
	}
	return dflt;
}

void LockProcess::cantLock( const TQString &txt)
{
	msgBox( TQMessageBox::Critical, i18n("Will not lock the session, as unlocking would be impossible:\n") + txt );
}

#if 0 // placeholders for later
i18n("Cannot start <i>kcheckpass</i>.");
i18n("<i>kcheckpass</i> is unable to operate. Possibly it is not SetUID root.");
#endif

//---------------------------------------------------------------------------
//
// Make the screen saver password protected.
//
bool LockProcess::startLock()
{
	for (TQStringList::ConstIterator it = mPlugins.begin(); it != mPlugins.end(); ++it) {
		GreeterPluginHandle plugin;
		TQString path = KLibLoader::self()->findLibrary( ((*it)[0] == '/' ? *it : "kgreet_" + *it ).latin1() );
		if (path.isEmpty()) {
			kdWarning(KDESKTOP_DEBUG_ID) << "GreeterPlugin " << *it << " does not exist" << endl;
			continue;
		}
		if (!(plugin.library = KLibLoader::self()->library( path.latin1() ))) {
			kdWarning(KDESKTOP_DEBUG_ID) << "Cannot load GreeterPlugin " << *it << " (" << path << ")" << endl;
			continue;
		}
		if (!plugin.library->hasSymbol( "kgreeterplugin_info" )) {
			kdWarning(KDESKTOP_DEBUG_ID) << "GreeterPlugin " << *it << " (" << path << ") is no valid greet widget plugin" << endl;
			plugin.library->unload();
			continue;
		}
		plugin.info = (kgreeterplugin_info*)plugin.library->symbol( "kgreeterplugin_info" );
		if (plugin.info->method && !mMethod.isEmpty() && mMethod != plugin.info->method) {
			kdDebug(KDESKTOP_DEBUG_ID) << "GreeterPlugin " << *it << " (" << path << ") serves " << plugin.info->method << ", not " << mMethod << endl;
			plugin.library->unload();
			continue;
		}
		if (!plugin.info->init( mMethod, getConf, this )) {
			kdDebug(KDESKTOP_DEBUG_ID) << "GreeterPlugin " << *it << " (" << path << ") refuses to serve " << mMethod << endl;
			plugin.library->unload();
			continue;
		}
		kdDebug(KDESKTOP_DEBUG_ID) << "GreeterPlugin " << *it << " (" << plugin.info->method << ", " << plugin.info->name << ") loaded" << endl;
		greetPlugin = plugin;
		mLocked = true;
		DM().setLock( true );
		return true;
	}
	cantLock( i18n("No appropriate greeter plugin configured.") );
	return false;
}

//---------------------------------------------------------------------------
//

void LockProcess::closeDialogAndStartHack()
{
#ifdef HAVE_DPMS
	if (KDesktopSettings::dpmsDependent()) {
		BOOL on;
		CARD16 state;
		if (DPMSInfo(tqt_xdisplay(), &state, &on)) {
			//kdDebug() << "checkDPMSActive " << on << " " << state << endl;
			if (DPMS_MONITOR_BLANKED(state)) {
				// Make sure saver will attempt to start again after DPMS wakeup
				// This is related to Bug 1475
				ENABLE_CONTINUOUS_LOCKDLG_DISPLAY
				if (mHackStartupEnabled) mHackDelayStartupTimer->start(mHackDelayStartupTimeout, TRUE);
				// Should not start saver here, because the DPMS check method below would turn it right back off!
				// This is related to Bug 1475
				return;
			}
		}
	}
#endif

	// Close any active dialogs
	DISABLE_CONTINUOUS_LOCKDLG_DISPLAY
	mSuspended = true;
	if (closeCurrentWindow()) {
		TQTimer::singleShot( 0, this, SLOT(closeDialogAndStartHack()) );
	}
	else {
		resume(true);
	}
}

void LockProcess::repaintRootWindowIfNeeded()
{
	if (trinity_desktop_lock_use_system_modal_dialogs) {
		if (!mHackProc.isRunning()) {
			if (argb_visual) {
				setTransparentBackgroundARGB();
				erase();
			}
			else {
				if (backingPixmap.isNull()) {
					setBackgroundColor(black);
					setGeometry(0, 0, mRootWidth, mRootHeight);
					erase();
				}
				else {
					bitBlt(this, 0, 0, &backingPixmap);
				}
			}
		}
		if (currentDialog == NULL) {
			raise();
		}
		saverReadyIfNeeded();
	}
}

bool LockProcess::startHack()
{
	mHackActive = TRUE;

	if ((mEnsureVRootWindowSecurityTimer) && (!mEnsureVRootWindowSecurityTimer->isActive())) {
		mEnsureVRootWindowSecurityTimer->start(250, FALSE);
	}

	if (currentDialog || (!mDialogs.isEmpty())) {
		// no resuming with dialog visible or when not visible
		if (argb_visual) {
			setTransparentBackgroundARGB();
		}
		else {
			if (backingPixmap.isNull()) {
				setBackgroundColor(black);
			}
			else {
				setBackgroundPixmap(backingPixmap);
			}
		}
		setGeometry(0, 0, mRootWidth, mRootHeight);
		erase();
		saverReadyIfNeeded();
		return false;
	}

	setCursor( tqblankCursor );
	XChangeActivePointerGrab( tqt_xdisplay(), GRABEVENTS, TQCursor(tqblankCursor).handle(), CurrentTime);

	if (mSaverExec.isEmpty()) {
		return false;
	}

	if (mHackProc.isRunning()) {
		stopHack();
	}

	mHackProc.clearArguments();

	TQTextStream ts(&mSaverExec, IO_ReadOnly);
	TQString word;
	ts >> word;
	TQString path = TDEStandardDirs::findExe(word);

	if (!path.isEmpty()) {
		mHackProc << path;

		kdDebug(KDESKTOP_DEBUG_ID) << "Starting hack: " << path << endl;

		while (!ts.atEnd()) {
			ts >> word;
			if (word == "%w")
			{
				word = word.setNum(winId());
			}
			mHackProc << word;
		}

		if (!mForbidden) {
			if (trinity_desktop_lock_use_system_modal_dialogs) {
				// Make sure we have a nice clean display to start with!
				if (argb_visual) {
					// Signal that we want to be transparent to a black background...
					if (m_saverRootWindow) {
						XChangeProperty(tqt_xdisplay(), m_saverRootWindow, kde_wm_transparent_to_black, XA_INTEGER, 32, PropModeReplace, (unsigned char *) "TRUE", 1L);
						XClearArea(tqt_xdisplay(), m_saverRootWindow, 0, 0, 0, 0, True);
					}
					setTransparentBackgroundARGB();
				}
				else {
					if (backingPixmap.isNull()) {
						setBackgroundColor(black);
					}
					else {
						setBackgroundPixmap(backingPixmap);
					}
				}
				setGeometry(0, 0, mRootWidth, mRootHeight);
				erase();
				saverReadyIfNeeded();
				mSuspended = false;
			}

			XChangeActivePointerGrab( tqt_xdisplay(), GRABEVENTS, TQCursor(tqblankCursor).handle(), CurrentTime);
			if (mHackProc.start() == true) {
#ifdef HAVE_SETPRIORITY
				setpriority(PRIO_PROCESS, mHackProc.pid(), mPriority);
#endif
				//bitBlt(this, 0, 0, &mOriginal);
				DISABLE_CONTINUOUS_LOCKDLG_DISPLAY
				if (trinity_desktop_lock_delay_screensaver_start && trinity_desktop_lock_forced) {
					// Close any active dialogs
					if (closeCurrentWindow()) {
						TQTimer::singleShot( 0, this, SLOT(closeCurrentWindow()) );
					}
				}
				if (m_startupStatusDialog) { m_startupStatusDialog->closeSMDialog(); m_startupStatusDialog=NULL; }
				return true;
			}
		}
		else {
			// we aren't allowed to start the specified screensaver either because it didn't run for some reason
			// according to the kiosk restrictions forbid it
			usleep(100);
			TQApplication::syncX();
			if (!trinity_desktop_lock_use_system_modal_dialogs) {
				if (argb_visual) {
					setTransparentBackgroundARGB();
				}
				else {
					if (backingPixmap.isNull()) {
						setBackgroundColor(black);
					}
					else {
						setBackgroundPixmap(backingPixmap);
					}
				}
			}
			if (argb_visual) {
				setTransparentBackgroundARGB();
				erase();
			}
			else {
				if (backingPixmap.isNull()) {
					setGeometry(0, 0, mRootWidth, mRootHeight);
					erase();
				}
				else {
					bitBlt(this, 0, 0, &backingPixmap);
				}
			}
			if (trinity_desktop_lock_use_system_modal_dialogs) {
				ENABLE_CONTINUOUS_LOCKDLG_DISPLAY
				if (mHackStartupEnabled) mHackDelayStartupTimer->start(mHackDelayStartupTimeout, TRUE);
			}
			saverReadyIfNeeded();
		}
	}

	if (m_startupStatusDialog) {
		m_startupStatusDialog->closeSMDialog();
		m_startupStatusDialog=NULL;
	}

	return false;
}

//---------------------------------------------------------------------------
//
void LockProcess::stopHack()
{
	if (mHackProc.isRunning()) {
		mHackProc.kill();
		if (!mHackProc.wait(10)) {
			mHackProc.kill(SIGKILL);
		}
	}
	setCursor( tqarrowCursor );

	mHackActive = FALSE;
}

//---------------------------------------------------------------------------
//
void LockProcess::hackExited(TDEProcess *)
{
	// Hack exited while we're supposed to be saving the screen.
	// Make sure the saver window is black.
	mHackActive = FALSE;
	usleep(100);
	TQApplication::syncX();
	if (!trinity_desktop_lock_use_system_modal_dialogs) {
		if (argb_visual) {
			setTransparentBackgroundARGB();
		}
		else {
			if (backingPixmap.isNull()) {
				setBackgroundColor(black);
			}
			else {
				setBackgroundPixmap(backingPixmap);
			}
		}
	}
	if (argb_visual) {
		if (m_saverRootWindow) {
			XDeleteProperty(tqt_xdisplay(), m_saverRootWindow, kde_wm_transparent_to_black);
			XClearArea(tqt_xdisplay(), m_saverRootWindow, 0, 0, 0, 0, True);
		}
		setTransparentBackgroundARGB();
	}
	else {
		if (backingPixmap.isNull()) {
			setGeometry(0, 0, mRootWidth, mRootHeight);
			erase();
		}
		else {
			bitBlt(this, 0, 0, &backingPixmap);
		}
	}
	if (!mSuspended) {
		if (trinity_desktop_lock_use_system_modal_dialogs) {
			ENABLE_CONTINUOUS_LOCKDLG_DISPLAY
			if (mHackStartupEnabled) mHackDelayStartupTimer->start(mHackDelayStartupTimeout, TRUE);
		}
	}
	saverReadyIfNeeded();
}

void LockProcess::displayLockDialogIfNeeded()
{
	if (m_startupStatusDialog) {
		m_startupStatusDialog->closeSMDialog();
		m_startupStatusDialog = NULL;
	}
	if (!mInSecureDialog) {
		if (trinity_desktop_lock_use_system_modal_dialogs) {
			if (!mBusy) {
				mBusy = true;
				if (mLocked) {
					if (checkPass()) {
						mClosingWindows = true;
						stopSaver();
						kapp->quit();
					}
				}
				mBusy = false;
			}
		}
	}
}

void LockProcess::suspend()
{
	if (!mSuspended) {
		if (trinity_desktop_lock_use_system_modal_dialogs) {
			mSuspended = true;
			stopHack();
			ENABLE_CONTINUOUS_LOCKDLG_DISPLAY
			if (mHackStartupEnabled) {
				mHackDelayStartupTimer->start(mHackDelayStartupTimeout, TRUE);
			}
		}
		else {
			TQString hackStatus;
			mHackProc.kill(SIGSTOP);
			mSuspended = true;
#if 0
			// wait for the stop signal to take effect
			while (hackStatus != "T") {
				char hackstat[8192];
				FILE *fp = fopen(TQString("/proc/%1/stat").arg(mHackProc.pid()).ascii(),"r");
				if (fp != NULL) {
				fgets (hackstat, 8192, fp);
				fclose (fp);
				}
				hackstat[8191] = 0;
				hackStatus = hackstat;
				hackStatus = hackStatus.remove(TQRegExp("(*) ", TRUE, TRUE));
				TQStringList hackStatusList = TQStringList::split(" ", hackStatus);
				hackStatus = (*(hackStatusList.at(1)));
			}
#endif
			TQApplication::syncX();
			usleep(100000);		// Allow certain bad graphics drivers (*cough* fglrx *cough*) time to actually sync up the display
		}
		TQApplication::syncX();
		mSavedScreen = TQPixmap::grabWindow( winId());
	}
}

void LockProcess::resume( bool force )
{
	if (trinity_desktop_lock_use_sak && (mHackDelayStartupTimer->isActive() || !mHackStartupEnabled)) {
		return;
	}
	if( !force && (!mDialogs.isEmpty() || !mVisibility )) {
		// no resuming with dialog visible or when not visible
		if (trinity_desktop_lock_use_system_modal_dialogs) {
			if (argb_visual) {
				setTransparentBackgroundARGB();
			}
			else {
				if (backingPixmap.isNull()) {
					setBackgroundColor(black);
				}
				else {
					setBackgroundPixmap(backingPixmap);
				}
			}
			setGeometry(0, 0, mRootWidth, mRootHeight);
			erase();
		}
		else {
			setGeometry(0, 0, mRootWidth, mRootHeight);
		}
		saverReadyIfNeeded();
		return;
	}
	if ((mSuspended) && (mHackProc.isRunning())) {
		XForceScreenSaver(tqt_xdisplay(), ScreenSaverReset );
		bitBlt( this, 0, 0, &mSavedScreen );
		TQApplication::syncX();
		mHackProc.kill(SIGCONT);
		mSuspended = false;
	}
	else if (mSuspended && trinity_desktop_lock_use_system_modal_dialogs) {
		startHack();
	}
}

//---------------------------------------------------------------------------
//
// Show the password dialog
// This is called only in the master process
//
bool LockProcess::checkPass()
{
	if (!mDialogs.isEmpty()) {
		// Another dialog is already shown
		// Abort!
		return 0;
	}
	if (mInfoMessageDisplayed == false) {
		if (mAutoLogout) {
			killTimer(mAutoLogoutTimerId);
		}

		// Make sure we never launch the SAK or login dialog if windows are being closed down
		// Otherwise we can get stuck in an irrecoverable state where any attempt to show the login screen is instantly aborted
		if (mClosingWindows) {
			return 0;
		}

		if (trinity_desktop_lock_use_sak) {
			// Verify SAK operational status
			TDEProcess* checkSAKProcess = new TDEProcess;
			*checkSAKProcess << "tdmtsak" << "check";
			checkSAKProcess->start(TDEProcess::Block, TDEProcess::NoCommunication);
			int retcode = checkSAKProcess->exitStatus();
			delete checkSAKProcess;
			if (retcode != 0) {
				trinity_desktop_lock_use_sak = false;
			}
		}

		if (trinity_desktop_lock_use_sak) {
			// Wait for SAK press before continuing...
			SAKDlg inDlg( this );
			execDialog( &inDlg );
			if (mClosingWindows) {
				return 0;
			}
		}

		showVkbd();
		PasswordDlg passDlg( this, &greetPlugin, (mShowLockDateTime)?mlockDateTime:TQDateTime());
		int ret = execDialog( &passDlg );
		hideVkbd();

		if (mForceReject == true) {
			ret = TQDialog::Rejected;
		}
		mForceReject = false;

		XWindowAttributes rootAttr;
		XGetWindowAttributes(tqt_xdisplay(), RootWindow(tqt_xdisplay(),
				tqt_xscreen()), &rootAttr);
		if(( rootAttr.your_event_mask & SubstructureNotifyMask ) == 0 ) {
			kdWarning() << "ERROR: Something removed SubstructureNotifyMask from the root window!!!" << endl;
			XSelectInput( tqt_xdisplay(), tqt_xrootwin(),
			SubstructureNotifyMask | rootAttr.your_event_mask );
		}

		return ret == TQDialog::Accepted;
	}
	else {
		return 0;
	}
}

static void fakeFocusIn( WId window )
{
	// We have keyboard grab, so this application will
	// get keyboard events even without having focus.
	// Fake FocusIn to make Qt realize it has the active
	// window, so that it will correctly show cursor in the dialog.
	XEvent ev;
	memset(&ev, 0, sizeof(ev));
	ev.xfocus.display = tqt_xdisplay();
	ev.xfocus.type = FocusIn;
	ev.xfocus.window = window;
	ev.xfocus.mode = NotifyNormal;
	ev.xfocus.detail = NotifyAncestor;
	XSendEvent( tqt_xdisplay(), window, False, NoEventMask, &ev );
}

void LockProcess::resumeUnforced()
{
	resume( false );
}

int LockProcess::execDialog( TQDialog *dlg )
{
	currentDialog=dlg;
	dlg->adjustSize();

	TQRect rect = dlg->geometry();
	rect.moveCenter(TDEGlobalSettings::desktopGeometry(TQCursor::pos()).center());
	dlg->move( rect.topLeft() );

	if (mDialogs.isEmpty()) {
		suspend();
		XChangeActivePointerGrab( tqt_xdisplay(), GRABEVENTS, TQCursor(tqarrowCursor).handle(), CurrentTime);
	}
	mDialogs.prepend( dlg );
	fakeFocusIn( dlg->winId());
	if (trinity_desktop_lock_use_system_modal_dialogs) {
		if (backingPixmap.isNull()) {
			setGeometry(0, 0, mRootWidth, mRootHeight);
			erase();
		}
		else {
			bitBlt(this, 0, 0, &backingPixmap);
		}
		saverReadyIfNeeded();
	}
	// dlg->exec may generate BadMatch errors, so make sure they are silently ignored
	int (*oldHandler)(Display *, XErrorEvent *);
	oldHandler = XSetErrorHandler(ignoreXError);
	int rt = dlg->exec();
	XSetErrorHandler(oldHandler);
	while (mDialogControlLock == true) {
		usleep(100000);
	}
	currentDialog = NULL;
	mDialogs.remove( dlg );
	if( mDialogs.isEmpty() ) {
		HANDLE cursorHandle;
		if (mHackActive) {
			cursorHandle = TQCursor(tqblankCursor).handle();
		}
		else {
			cursorHandle = TQCursor(tqbusyCursor).handle();
		}
		XChangeActivePointerGrab( tqt_xdisplay(), GRABEVENTS, cursorHandle, CurrentTime);
		if (trinity_desktop_lock_use_system_modal_dialogs) {
			// Slight delay before screensaver resume to allow the dialog window to fully disappear
			if (hackResumeTimer == NULL) {
				hackResumeTimer = new TQTimer( this );
				connect( hackResumeTimer, TQT_SIGNAL(timeout()), this, TQT_SLOT(resumeUnforced()) );
			}
			if (mResizingDesktopLock == false) {
				hackResumeTimer->start( 10, TRUE );
			}
		}
		else {
			resume( false );
		}
	}
	else {
		fakeFocusIn( mDialogs.first()->winId());
		currentDialog = dynamic_cast<TQDialog*>(mDialogs.first());
	}
	return rt;
}

void LockProcess::slotForcePaintBackground()
{
	TQPixmap blankPixmap(mRootWidth, mRootHeight);
	blankPixmap.fill(Qt::black);
	slotPaintBackground(blankPixmap);
	printf("[WARNING] Unable to obtain desktop wallpaper in a timely manner.  High system load or possibly a TDE bug!\n"); fflush(stdout);
}

void LockProcess::slotPaintBackground(const TQPixmap &rpm)
{
	if (argb_visual) {
		if (mEnsureScreenHiddenTimer) {
			mEnsureScreenHiddenTimer->stop();
		}
		return;
	}

	if (mEnsureScreenHiddenTimer) {
		mEnsureScreenHiddenTimer->stop();
	}
	else {
		mEnsureScreenHiddenTimer = new TQTimer( this );
		connect( mEnsureScreenHiddenTimer, TQT_SIGNAL(timeout()), this, TQT_SLOT(slotForcePaintBackground()) );
	}

	// Only remove the mask widget once the resize is 100% complete!
	if (m_maskWidget) {
		delete m_maskWidget;
		m_maskWidget = NULL;
		XSync(tqt_xdisplay(), False);
	}

	TQPixmap pm = rpm;

	if (TQPaintDevice::x11AppDepth() == 32) {
		// Remove the alpha components from the image
		TQImage correctedImage = pm.convertToImage();
		correctedImage = correctedImage.convertDepth(32);
		correctedImage.setAlphaBuffer(true);
		int w = correctedImage.width();
		int h = correctedImage.height();
		for (int y = 0; y < h; ++y) {
			TQRgb *ls = (TQRgb *)correctedImage.scanLine( y );
			for (int x = 0; x < w; ++x) {
				TQRgb l = ls[x];
				int r = int( tqRed( l ) );
				int g = int( tqGreen( l ) );
				int b = int( tqBlue( l ) );
				int a = int( 255 );
				ls[x] = tqRgba( r, g, b, a );
			}
		}
		pm.convertFromImage(correctedImage);
	}

	backingPixmap = pm;
	if ((trinity_desktop_lock_delay_screensaver_start && trinity_desktop_lock_forced) || (!mHackStartupEnabled)) {
		setBackgroundPixmap(backingPixmap);
		setGeometry(0, 0, mRootWidth, mRootHeight);
		erase();
	}
}

void LockProcess::preparePopup()
{
	TQWidget *dlg = (TQWidget *)sender();
	mDialogs.prepend( dlg );
	fakeFocusIn( dlg->winId() );
}

void LockProcess::cleanupPopup()
{
	TQWidget *dlg = (TQWidget *)sender();
	mDialogs.remove( dlg );
	if ( mDialogs.isEmpty() ) {
		fakeFocusIn( mDialogs.first()->winId() );
	}
}

void LockProcess::doFunctionKeyBroadcast() {
	// Provide a clean, pretty display switch by hiding the password dialog here
	// This does NOT work with the SAK or system modal dialogs!
	if ((!trinity_desktop_lock_use_system_modal_dialogs) && (!trinity_desktop_lock_use_sak)) {
		mBusy=true;
		TQTimer::singleShot(1000, this, TQT_SLOT(slotDeadTimePassed()));
		if (mkeyCode == XKeysymToKeycode(tqt_xdisplay(), XF86XK_Display)) {
			while (mDialogControlLock == true) {
				usleep(100000);
			}
			mDialogControlLock = true;
			currentDialog->close();		// DO NOT use closeCurrentWindow() here!
			mDialogControlLock = false;
		}
	}

	DCOPRef ref( "*", "MainApplication-Interface");
	ref.send("sendFakeKey", DCOPArg(mkeyCode , "unsigned int"));
}

//---------------------------------------------------------------------------
//
// X11 Event.
//
bool LockProcess::x11Event(XEvent *event)
{
	// Allow certain very specific keypresses through
	// Key:			Reason:
	// XF86Display		You need to be able to see the screen when unlocking your computer
	// XF86AudioMute		Would be nice to be able to shut your computer up in an emergency while it is locked
	// XF86AudioRaiseVolume	Ditto
	// XF86AudioLowerVolume	Ditto
	// XF86XK_PowerOff		If someone has access to the power button, they can hard power off the machine anyway
	// XF86XK_Sleep		Ditto
	// XF86XK_Suspend		Ditto
	// XF86XK_Hibernate		Ditto

	//if ((event->type == KeyPress) || (event->type == KeyRelease)) {
	if (event->type == KeyPress) {
		// Multimedia keys
		if ((event->xkey.keycode == XKeysymToKeycode(event->xkey.display, XF86XK_Display)) || \
			(event->xkey.keycode == XKeysymToKeycode(event->xkey.display, XF86XK_AudioMute)) || \
			(event->xkey.keycode == XKeysymToKeycode(event->xkey.display, XF86XK_AudioRaiseVolume)) || \
			(event->xkey.keycode == XKeysymToKeycode(event->xkey.display, XF86XK_AudioLowerVolume))) {
			mkeyCode = event->xkey.keycode;
			TQTimer::singleShot( 100, this, TQT_SLOT(doFunctionKeyBroadcast()) );
			return true;
		}
		// ACPI power keys
		if ((event->xkey.keycode == XKeysymToKeycode(event->xkey.display, XF86XK_PowerOff)) || \
			(event->xkey.keycode == XKeysymToKeycode(event->xkey.display, XF86XK_Sleep)) || \
			(event->xkey.keycode == XKeysymToKeycode(event->xkey.display, XF86XK_Suspend)) || \
			(event->xkey.keycode == XKeysymToKeycode(event->xkey.display, XF86XK_Hibernate))) {
			mkeyCode = event->xkey.keycode;
			TQTimer::singleShot( 100, this, TQT_SLOT(doFunctionKeyBroadcast()) );
			return true;
		}
	}

	switch (event->type)
	{
		case ButtonPress:
		case MotionNotify:
		case ButtonRelease:
			if( forwardVkbdEvent( event )) {
				return true; // filter out
			}
			// fall through
		case KeyPress:
			if ((mHackDelayStartupTimer) && (mHackDelayStartupTimer->isActive())) {
				if (mHackStartupEnabled) mHackDelayStartupTimer->start(mHackDelayStartupTimeout, TRUE);
			}
			if (mBusy || !mDialogs.isEmpty()) {
				break;
			}
			mBusy = true;
			if (trinity_desktop_lock_delay_screensaver_start) {
				if (mLocked) {
					ENABLE_CONTINUOUS_LOCKDLG_DISPLAY
					if (mHackStartupEnabled) {
						mHackDelayStartupTimer->start(mHackDelayStartupTimeout, TRUE);
					}
				}
				if ((!mLocked) && (!mInSecureDialog)) {
					stopSaver();
					kapp->quit();
				}
				if (mAutoLogout) {
					// we need to restart the auto logout countdown
					killTimer(mAutoLogoutTimerId);
					mAutoLogoutTimerId = startTimer(mAutoLogoutTimeout);
				}
			}
			else {
				if (!mLocked || checkPass()) {
					mClosingWindows = true;
					stopSaver();
					kapp->quit();
				}
				else if (mAutoLogout) {
					// we need to restart the auto logout countdown
					killTimer(mAutoLogoutTimerId);
					mAutoLogoutTimerId = startTimer(mAutoLogoutTimeout);
				}
			}
			mBusy = false;
			return true;

		case VisibilityNotify:
			if( event->xvisibility.window == winId()) {
				// mVisibility == false means the screensaver is not visible at all
				// e.g. when switched to text console
				mVisibility = !(event->xvisibility.state == VisibilityFullyObscured);
				if(!mVisibility) {
					mSuspendTimer.start(2000, true);
				}
				else {
					mSuspendTimer.stop();
					if (mResizingDesktopLock == false) {
						if (trinity_desktop_lock_delay_screensaver_start && trinity_desktop_lock_forced && trinity_desktop_lock_use_system_modal_dialogs) {
							// Do nothing
						}
						else {
							if (mHackStartupEnabled == true) {
								resume( false );
							}
							else {
								if (trinity_desktop_lock_use_system_modal_dialogs == true) {
									ENABLE_CONTINUOUS_LOCKDLG_DISPLAY
									if (mHackStartupEnabled) mHackDelayStartupTimer->start(mHackDelayStartupTimeout, TRUE);
								}
								else {
									resume( false );
								}
							}
						}
					}
				}
				if (event->xvisibility.state != VisibilityUnobscured) {
					stayOnTop();
				}
			}
			break;

		case ConfigureNotify: // from SubstructureNotifyMask on the root window
			if(event->xconfigure.event == tqt_xrootwin()) {
				stayOnTop();
			}
			for( TQValueList< VkbdWindow >::Iterator it = mVkbdWindows.begin();
				it != mVkbdWindows.end();
				++it ) {
				if( (*it).id == event->xconfigure.window ) {
					(*it).rect = TQRect( event->xconfigure.x, event->xconfigure.y,
						event->xconfigure.width, event->xconfigure.height );
					break;
				}
			}
			break;
		case MapNotify: // from SubstructureNotifyMask on the root window
			windowAdded( event->xmap.window, false );
			if( event->xmap.event == tqt_xrootwin()) {
				stayOnTop();
			}
			break;
		case DestroyNotify:
			for( TQValueList< VkbdWindow >::Iterator it = mVkbdWindows.begin(); it != mVkbdWindows.end(); ++it ) {
				if( (*it).id == event->xdestroywindow.window ) {
					mVkbdWindows.remove( it );
					break;
				}
			}
			break;
	}

	// We have grab with the grab window being the root window.
	// This results in key events being sent to the root window,
	// but they should be sent to the dialog if it's visible.
	// It could be solved by setFocus() call, but that would mess
	// the focus after this process exits.
	// Qt seems to be quite hard to persuade to redirect the event,
	// so let's simply dupe it with correct destination window,
	// and ignore the original one.
	if(!mDialogs.isEmpty() && ( event->type == KeyPress || event->type == KeyRelease)
		&& event->xkey.window != mDialogs.first()->winId()) {
		XEvent ev2 = *event;
		ev2.xkey.window = ev2.xkey.subwindow = mDialogs.first()->winId();
		tqApp->x11ProcessEvent( &ev2 );
		return true;
	}

	return false;
}

void LockProcess::stayOnTop()
{
	if(!mDialogs.isEmpty() || !mVkbdWindows.isEmpty()) {
		// this restacking is written in a way so that
		// if the stacking positions actually don't change,
		// all restacking operations will be no-op,
		// and no ConfigureNotify will be generated,
		// thus avoiding possible infinite loops
		if( !mVkbdWindows.isEmpty()) {
			XRaiseWindow( tqt_xdisplay(), mVkbdWindows.first().id );
		}
		else {
			XRaiseWindow( tqt_xdisplay(), mDialogs.first()->winId()); // raise topmost
		}
		// and stack others below it
		Window* stack = new Window[ mDialogs.count() + mVkbdWindows.count() + 1 ];
		int count = 0;
		for( TQValueList< VkbdWindow >::ConstIterator it = mVkbdWindows.begin(); it != mVkbdWindows.end(); ++it ) {
			stack[ count++ ] = (*it).id;
		}
		for( TQValueList< TQWidget* >::ConstIterator it = mDialogs.begin(); it != mDialogs.end(); ++it ) {
			stack[ count++ ] = (*it)->winId();
		}
		stack[ count++ ] = winId();
		XRestackWindows( x11Display(), stack, count );
		delete[] stack;
	}
	else {
		XRaiseWindow(tqt_xdisplay(), winId());
	}
}

void LockProcess::checkDPMSActive()
{
#ifdef HAVE_DPMS
	if (KDesktopSettings::dpmsDependent()) {
		BOOL on;
		CARD16 state;
		if (DPMSInfo(tqt_xdisplay(), &state, &on)) {
			//kdDebug() << "checkDPMSActive " << on << " " << state << endl;
			if (DPMS_MONITOR_BLANKED(state)) {
				suspend();
			}
			else if (mSuspended) {
				if (mResizingDesktopLock == false) {
					resume( true );
				}
			}
		}
	}
#endif
}

#if defined(HAVE_XF86MISC) && defined(HAVE_XF86MISCSETGRABKEYSSTATE)
// see http://cvsweb.xfree86.org/cvsweb/xc/programs/Xserver/hw/xfree86/common/xf86Events.c#rev3.113
// This allows enabling the "Allow{Deactivate/Closedown}Grabs" options in XF86Config,
// and kdesktop_lock will still lock the session.
static enum { Unknown, Yes, No } can_do_xf86_lock = Unknown;
void LockProcess::lockXF86()
{
	if( can_do_xf86_lock == Unknown ) {
		int major, minor;
		if( XF86MiscQueryVersion( tqt_xdisplay(), &major, &minor ) && major >= 0 && minor >= 5 ) {
			can_do_xf86_lock = Yes;
		}
		else {
			can_do_xf86_lock = No;
		}
	}
	if( can_do_xf86_lock != Yes ) {
		return;
	}
	if( mRestoreXF86Lock ) {
		return;
	}
	if( XF86MiscSetGrabKeysState( tqt_xdisplay(), False ) != MiscExtGrabStateSuccess ) {
		return;
	}
	// success
	mRestoreXF86Lock = true;
}

void LockProcess::unlockXF86()
{
	if( can_do_xf86_lock != Yes ) {
		return;
	}
	if( !mRestoreXF86Lock ) {
		return;
	}
	XF86MiscSetGrabKeysState( tqt_xdisplay(), True );
	mRestoreXF86Lock = false;
}
#else
void LockProcess::lockXF86()
{
	//
}

void LockProcess::unlockXF86()
{
	//
}
#endif

void LockProcess::msgBox( TQMessageBox::Icon type, const TQString &txt )
{
	TQDialog box( 0, "messagebox", true, (trinity_desktop_lock_use_system_modal_dialogs?((WFlags)WStyle_StaysOnTop):((WFlags)WX11BypassWM)) );
	if (trinity_desktop_lock_use_system_modal_dialogs) {
		// Signal that we do not want any window controls to be shown at all
		XChangeProperty(tqt_xdisplay(), box.winId(), kde_wm_system_modal_notification, XA_INTEGER, 32, PropModeReplace, (unsigned char *) "TRUE", 1L);
	}
	box.setCaption(i18n("Authentication Subsystem Notice"));
	TQFrame *winFrame = new TQFrame( &box );
	if (trinity_desktop_lock_use_system_modal_dialogs) {
		winFrame->setFrameStyle( TQFrame::NoFrame );
	}
	else {
		winFrame->setFrameStyle( TQFrame::WinPanel | TQFrame::Raised );
	}
	winFrame->setLineWidth( 2 );
	TQLabel *label1 = new TQLabel( winFrame );
	label1->setPixmap( TQMessageBox::standardIcon( type ) );
	TQLabel *label2 = new TQLabel( txt, winFrame );
	KPushButton *button = new KPushButton( KStdGuiItem::ok(), winFrame );
	button->setDefault( true );
	button->setSizePolicy( TQSizePolicy( TQSizePolicy::Preferred, TQSizePolicy::Preferred ) );
	connect( button, TQT_SIGNAL( clicked() ), &box, TQT_SLOT( accept() ) );

	TQVBoxLayout *vbox = new TQVBoxLayout( &box );
	vbox->addWidget( winFrame );
	TQGridLayout *grid = new TQGridLayout( winFrame, 2, 2, 10 );
	grid->addWidget( label1, 0, 0, Qt::AlignCenter );
	grid->addWidget( label2, 0, 1, Qt::AlignCenter );
	grid->addMultiCellWidget( button, 1,1, 0,1, Qt::AlignCenter );

	execDialog( &box );
}

static int run_vkbd = -1;
void LockProcess::showVkbd()
{
	if( run_vkbd == - 1 ) {
		run_vkbd = (!TDEStandardDirs::findExe( "xvkbd" ).isEmpty());
	}
	if( run_vkbd ) {
		mVkbdWindows.clear();
		mVkbdLastEventWindow = None;
		mKWinModule = new KWinModule( NULL, KWinModule::INFO_WINDOWS );
		connect( mKWinModule, TQT_SIGNAL( windowAdded( WId )), TQT_SLOT( windowAdded( WId )));
		mVkbdProcess = new TDEProcess;
		*mVkbdProcess << "xvkbd" << "-compact" << "-geometry" << "-0-0" << "-xdm";
		mVkbdProcess->start();
	}
}

void LockProcess::hideVkbd()
{
	if( mVkbdProcess != NULL ) {
		mVkbdProcess->kill();
		delete mVkbdProcess;
		mVkbdProcess = NULL;
		delete mKWinModule;
		mKWinModule = NULL;
		mVkbdWindows.clear();
	}
}

void LockProcess::windowAdded( WId w )
{
	windowAdded( w, true );
}

void LockProcess::windowAdded( WId w, bool managed )
{
	// KWin::windowInfo may generate BadWindow errors, so make sure they are silently ignored
	int (*oldHandler)(Display *, XErrorEvent *);
	oldHandler = XSetErrorHandler(ignoreXError);
	KWin::WindowInfo info = KWin::windowInfo( w, 0, NET::WM2WindowClass );
	XSetErrorHandler(oldHandler);

	if( info.windowClassClass().lower() != "xvkbd" ) {
		return;
	}
	// Unmanaged windows (i.e. popups) don't currently work anyway, since they
	// don't have WM_CLASS set anyway. I could perhaps try tricks with X id
	// ranges if really needed.
	if( managed ) {
		// withdraw the window, wait for it to be withdrawn, reparent it directly
		// to root at the right position
		XWithdrawWindow( tqt_xdisplay(), w, tqt_xscreen());
		for(;;) {
			Atom type;
			int format;
			unsigned long length, after;
			unsigned char *data;
			int r = XGetWindowProperty( tqt_xdisplay(), w, tqt_wm_state, 0, 2,
							false, AnyPropertyType, &type, &format,
							&length, &after, &data );
			bool withdrawn = true;
			if ( r == Success && data && format == 32 ) {
				TQ_UINT32 *wstate = (TQ_UINT32*)data;
				withdrawn  = (*wstate == WithdrawnState );
				XFree( (char *)data );
			}
			if( withdrawn ) {
				break;
			}
		}
	}
	XSelectInput( tqt_xdisplay(), w, StructureNotifyMask );
	XWindowAttributes attr_geom;
	if( !XGetWindowAttributes( tqt_xdisplay(), w, &attr_geom )) {
		return;
	}
	int x = XDisplayWidth( tqt_xdisplay(), tqt_xscreen()) - attr_geom.width;
	int y = XDisplayHeight( tqt_xdisplay(), tqt_xscreen()) - attr_geom.height;
	if( managed ) {
		XSetWindowAttributes attr;
		if (!trinity_desktop_lock_use_system_modal_dialogs) {
			attr.override_redirect = True;
			XChangeWindowAttributes( tqt_xdisplay(), w, CWOverrideRedirect, &attr );
		}
		XReparentWindow( tqt_xdisplay(), w, tqt_xrootwin(), x, y );
		XMapWindow( tqt_xdisplay(), w );
	}
	VkbdWindow data;
	data.id = w;
	data.rect = TQRect( x, y, attr_geom.width, attr_geom.height );
	mVkbdWindows.prepend( data );
}

bool LockProcess::forwardVkbdEvent( XEvent* event )
{
	if( mVkbdProcess == NULL ) {
		return false;
	}
	TQPoint pos;
	Time time;
	switch( event->type )
	{
		case ButtonPress:
		case ButtonRelease:
			pos = TQPoint( event->xbutton.x, event->xbutton.y );
			time = event->xbutton.time;
			break;
		case MotionNotify:
			pos = TQPoint( event->xmotion.x, event->xmotion.y );
			time = event->xmotion.time;
			break;
		default:
			return false;
	}
	// vkbd windows are kept topmost, so just find the first one in the position
	for( TQValueList< VkbdWindow >::ConstIterator it = mVkbdWindows.begin(); it != mVkbdWindows.end(); ++it ) {
		if( TQT_TQRECT_OBJECT((*it).rect).contains( pos )) {
			// Find the subwindow where the event should actually go.
			// Not exactly cheap in the number of X roundtrips but oh well.
			Window window = (*it).id;
			Window root, child;
			int root_x, root_y, x, y;
			unsigned int mask;
			for(;;) {
				if( !XQueryPointer( tqt_xdisplay(), window, &root, &child, &root_x, &root_y, &x, &y, &mask )) {
					return false;
				}
				if( child == None ) {
					break;
				}
				window = child;
			}
			switch( event->type )
			{
				case ButtonPress:
				case ButtonRelease:
					event->xbutton.x = x;
					event->xbutton.y = y;
					event->xbutton.subwindow = None;
					break;
				case MotionNotify:
					event->xmotion.x = x;
					event->xmotion.y = y;
					event->xmotion.subwindow = None;
					break;
			}
			event->xany.window = window;
			sendVkbdFocusInOut( window, time );
			XSendEvent( tqt_xdisplay(), window, False, 0, event );
			return true;
		}
	}
	sendVkbdFocusInOut( None, time );
	return false;
}

// Fake EnterNotify/LeaveNotify events as the mouse moves. They're not sent by X
// because of the grab and having them makes xvkbd highlight the buttons (but
// not needed otherwise it seems).
void LockProcess::sendVkbdFocusInOut( WId window, Time t )
{
	if( mVkbdLastEventWindow == window ) {
		return;
	}
	if( mVkbdLastEventWindow != None ) {
		XEvent e;
		e.xcrossing.type = LeaveNotify;
		e.xcrossing.display = tqt_xdisplay();
		e.xcrossing.window = mVkbdLastEventWindow;
		e.xcrossing.root = tqt_xrootwin();
		e.xcrossing.subwindow = None;
		e.xcrossing.time = t;
		e.xcrossing.x = 0;
		e.xcrossing.y = 0;
		e.xcrossing.x_root = -1;
		e.xcrossing.y_root = -1;
		e.xcrossing.mode = NotifyNormal;
		e.xcrossing.detail = NotifyAncestor;
		e.xcrossing.same_screen = True;
		e.xcrossing.focus = False;
		e.xcrossing.state = 0;
		XSendEvent( tqt_xdisplay(), mVkbdLastEventWindow, False, 0, &e );
	}
	mVkbdLastEventWindow = window;
	if( mVkbdLastEventWindow != None ) {
		XEvent e;
		e.xcrossing.type = EnterNotify;
		e.xcrossing.display = tqt_xdisplay();
		e.xcrossing.window = mVkbdLastEventWindow;
		e.xcrossing.root = tqt_xrootwin();
		e.xcrossing.subwindow = None;
		e.xcrossing.time = t;
		e.xcrossing.x = 0;
		e.xcrossing.y = 0;
		e.xcrossing.x_root = 0;
		e.xcrossing.y_root = 0;
		e.xcrossing.mode = NotifyNormal;
		e.xcrossing.detail = NotifyAncestor;
		e.xcrossing.same_screen = True;
		e.xcrossing.focus = False;
		e.xcrossing.state = 0;
		XSendEvent( tqt_xdisplay(), mVkbdLastEventWindow, False, 0, &e );
	}
}

void LockProcess::slotMouseActivity(XEvent *event)
{
	bool inFrame = 0;
	bool inDialog = 0;
	XButtonEvent *be = (XButtonEvent *) event;
	XMotionEvent *me = (XMotionEvent *) event;
	if ((event->type == ButtonPress) && (!mDialogs.isEmpty())) {
		// Get geometry including window frame/titlebar
		TQRect fgeom = mDialogs.first()->frameGeometry();
		TQRect wgeom = mDialogs.first()->geometry();

		if (((be->x_root > fgeom.x()) && (be->y_root > fgeom.y())) && ((be->x_root < (fgeom.x()+fgeom.width())) && (be->y_root < (fgeom.y()+fgeom.height())))) {
			inFrame = 1;
		}
		if (((be->x_root > wgeom.x()) && (be->y_root > wgeom.y())) && ((be->x_root < (wgeom.x()+wgeom.width())) && (be->y_root < (wgeom.y()+wgeom.height())))) {
			inDialog = 1;
		}

		// Clicked inside dialog; set focus
		if (inFrame == TRUE) {
			WId window = mDialogs.first()->winId();
			XSetInputFocus(tqt_xdisplay(), window, RevertToParent, CurrentTime);
			fakeFocusIn(window);
			// Why this needs to be repeated I have no idea...
			XSetInputFocus(tqt_xdisplay(), window, RevertToParent, CurrentTime);
			fakeFocusIn(window);
		}

		// Clicked inside window handle (or border); drag window
		if ((inFrame == TRUE) && (inDialog == FALSE)) {
			TQPoint oldPoint = mDialogs.first()->pos();
			m_mouseDown = 1;
			m_dialogPrevX = oldPoint.x();
			m_dialogPrevY = oldPoint.y();
			m_mousePrevX = be->x_root;
			m_mousePrevY = be->y_root;
			XChangeActivePointerGrab( tqt_xdisplay(), GRABEVENTS, TQCursor(tqsizeAllCursor).handle(), CurrentTime);
		}
	}

	// Drag the window...
	if (event->type == MotionNotify) {
		if (m_mouseDown == TRUE) {
			int deltaX = me->x_root - m_mousePrevX;
			int deltaY = me->y_root - m_mousePrevY;
			m_dialogPrevX = m_dialogPrevX + deltaX;
			m_dialogPrevY = m_dialogPrevY + deltaY;
			if (!mDialogs.isEmpty()) mDialogs.first()->move(m_dialogPrevX, m_dialogPrevY);

			m_mousePrevX = me->x_root;
			m_mousePrevY = me->y_root;
		}
	}

	if (event->type == ButtonRelease) {
		m_mouseDown = 0;
		XChangeActivePointerGrab( tqt_xdisplay(), GRABEVENTS, TQCursor(tqarrowCursor).handle(), CurrentTime);
	}
}

void LockProcess::processInputPipeCommand(TQString inputcommand) {
	TQCString command(inputcommand.ascii());
	TQString to_display;
	TQString pin_entry;

	if (command[0] == 'C') {
		while (mDialogControlLock == true) usleep(100000);
		mDialogControlLock = true;
		if (mInfoMessageDisplayed || !trinity_desktop_lock_use_system_modal_dialogs) {
			if (currentDialog != NULL) {
				mForceReject = true;
				closeCurrentWindow();
			}
		}
		mClosingWindows = false;
		mInfoMessageDisplayed = false;
		mDialogControlLock = false;
	}
	if (command[0] == 'T') {
		to_display = command.data();
		to_display = to_display.remove(0,1);
		// Lock out password dialogs and close any active dialog
		while (mDialogControlLock == true) usleep(100000);
		mDialogControlLock = true;
		if (mInfoMessageDisplayed || !trinity_desktop_lock_use_system_modal_dialogs) {
			if (currentDialog != NULL) {
				mForceReject = true;
				closeCurrentWindow();
			}
		}
		mInfoMessageDisplayed = true;
		mDialogControlLock = false;
		// Display info message dialog
		InfoDlg inDlg( this );
		inDlg.updateLabel(to_display);
		inDlg.setUnlockIcon();
		execDialog( &inDlg );
		mForceReject = false;
		mClosingWindows = false;
		return;
	}
	if ((command[0] == 'E') || (command[0] == 'W') || (command[0] == 'I') || (command[0] == 'K')) {
		to_display = command.data();
		to_display = to_display.remove(0,1);
		// Lock out password dialogs and close any active dialog
		while (mDialogControlLock == true) usleep(100000);
		mDialogControlLock = true;
		if (mInfoMessageDisplayed || !trinity_desktop_lock_use_system_modal_dialogs) {
			if (currentDialog != NULL) {
				mForceReject = true;
				closeCurrentWindow();
			}
		}
		mInfoMessageDisplayed = true;
		mDialogControlLock = false;
		// Display info message dialog
		InfoDlg inDlg( this );
		inDlg.updateLabel(to_display);
		if (command[0] == 'K') inDlg.setKDEIcon();
		if (command[0] == 'I') inDlg.setInfoIcon();
		if (command[0] == 'W') inDlg.setWarningIcon();
		if (command[0] == 'E') inDlg.setErrorIcon();
		execDialog( &inDlg );
		mForceReject = false;
		mClosingWindows = false;
		return;
	}
	if (command[0] == 'Q') {
		to_display = command.data();
		to_display = to_display.remove(0,1);
		// Lock out password dialogs and close any active dialog
		while (mDialogControlLock == true) usleep(100000);
		mDialogControlLock = true;
		if (mInfoMessageDisplayed || !trinity_desktop_lock_use_system_modal_dialogs) {
			if (currentDialog != NULL) {
				mForceReject = true;
				closeCurrentWindow();
			}
		}
		mInfoMessageDisplayed = true;
		mDialogControlLock = false;
		// Display query dialog
		QueryDlg qryDlg( this );
		qryDlg.updateLabel(to_display);
		qryDlg.setUnlockIcon();
		mForceReject = false;
		execDialog( &qryDlg );
		if (mForceReject == false) {
			pin_entry = qryDlg.getEntry();
			mInfoMessageDisplayed=false;
			if (mPipeOpen_out == true) {
			  TQCString pin_entry_local8 = pin_entry.local8Bit();  // local 8 bit length may differ from TQString length
				if (write(mPipe_fd_out, pin_entry_local8.data(), pin_entry_local8.length()+1) == -1) {
					// Error handler to shut up gcc warnings
				}
				if (write(mPipe_fd_out, "\n\r", 3) == -1) {
					// Error handler to shut up gcc warnings
				}
			}
		}
		mForceReject = false;
		mClosingWindows = false;
		return;
	}
}

void LockProcess::cryptographicCardInserted(TDECryptographicCardDevice* cdevice) {
#ifdef WITH_TDEHWLIB
	TQString login_name = TQString::null;
	X509CertificatePtrList certList = cdevice->cardX509Certificates();
	if (certList.count() > 0) {
		KSSLCertificate* card_cert = NULL;
		card_cert = KSSLCertificate::fromX509(certList[0]);
		TQStringList cert_subject_parts = TQStringList::split("/", card_cert->getSubject(), false);
		for (TQStringList::Iterator it = cert_subject_parts.begin(); it != cert_subject_parts.end(); ++it ) {
			TQString lcpart = (*it).lower();
			if (lcpart.startsWith("cn=")) {
				login_name = lcpart.right(lcpart.length() - strlen("cn="));
			}
		}
		delete card_cert;
	}

	if (login_name != "") {
		KUser user;
		if (login_name == user.loginName()) {
			// Pass login to the PAM stack...
			m_loginCardDevice = cdevice;
			if (dynamic_cast<SAKDlg*>(currentDialog)) {
				dynamic_cast<SAKDlg*>(currentDialog)->closeDialogForced();
				TQTimer::singleShot(0, this, SLOT(signalPassDlgToAttemptCardLogin()));
			}
			else if (dynamic_cast<SecureDlg*>(currentDialog)) {
				dynamic_cast<SecureDlg*>(currentDialog)->closeDialogForced();
				TQTimer::singleShot(0, this, SLOT(signalPassDlgToAttemptCardLogin()));
			}
			else if (dynamic_cast<PasswordDlg*>(currentDialog)) {
				signalPassDlgToAttemptCardLogin();
			}
		}
	}
#endif
}

void LockProcess::cryptographicCardRemoved(TDECryptographicCardDevice* cdevice) {
#ifdef WITH_TDEHWLIB
	PasswordDlg* passDlg = dynamic_cast<PasswordDlg*>(currentDialog);
	if (passDlg) {
		passDlg->resetCardLogin();
	}
	else {
		m_loginCardDevice = NULL;
		TQTimer::singleShot(0, this, SLOT(signalPassDlgToAttemptCardAbort()));
	}
#endif
}

void LockProcess::signalPassDlgToAttemptCardLogin()
{
#ifdef WITH_TDEHWLIB
	PasswordDlg* passDlg = dynamic_cast<PasswordDlg*>(currentDialog);
	if (passDlg && m_loginCardDevice) {
		passDlg->attemptCardLogin();
	}
	else {
		if (currentDialog && m_loginCardDevice) {
			// Try again later
			TQTimer::singleShot(0, this, SLOT(signalPassDlgToAttemptCardLogin()));
		}
	}
#endif
}

void LockProcess::signalPassDlgToAttemptCardAbort()
{
#ifdef WITH_TDEHWLIB
	PasswordDlg* passDlg = dynamic_cast<PasswordDlg*>(currentDialog);
	if (passDlg) {
		passDlg->resetCardLogin();
	}
	else {
		if (currentDialog) {
			// Try again later
			TQTimer::singleShot(0, this, SLOT(signalPassDlgToAttemptCardAbort()));
		}
	}
#endif
}

void LockProcess::cryptographicCardPinRequested(TQString prompt, TDECryptographicCardDevice* cdevice)
{
#ifdef WITH_TDEHWLIB
	TQCString password;
	TQString pin_entry;

	QueryDlg qryDlg(this);
	qryDlg.updateLabel(prompt);
	qryDlg.setUnlockIcon();
	mForceReject = false;
	execDialog(&qryDlg);
	if (mForceReject == false) {
		pin_entry = qryDlg.getEntry();
		cdevice->setProvidedPin(pin_entry);
	}
	else {
		cdevice->setProvidedPin(TQString::null);
	}
#endif
}

TDECryptographicCardDevice* LockProcess::cryptographicCardDevice()
{
#ifdef WITH_TDEHWLIB
	return m_loginCardDevice;
#else
	return NULL;
#endif
}

void LockProcess::fullyOnline() {
	if (!mFullyOnlineSent) {
		if (kdesktop_pid > 0) {
			if (kill(kdesktop_pid, SIGUSR2) < 0) {
				// The controlling kdesktop process probably died.  Commit suicide...
				// Exit uncleanly
				exit(1);
			}
			else {
				mFullyOnlineSent = true;
			}
		}
	}
}

void LockProcess::saverReady() {
	DCOPRef ref( "kdesktop", "KScreensaverIface");
	ref.send( "saverLockReady" );
}

//===========================================================================
//
// Control pipe handler
//
ControlPipeHandlerObject::ControlPipeHandlerObject() : TQObject() {
	mParent = NULL;
	mRunning = false;
	mTerminate = false;
	mThreadID = 0L;
}

ControlPipeHandlerObject::~ControlPipeHandlerObject() {
	//
}

void ControlPipeHandlerObject::run(void) {
	mThreadID = pthread_self();
	mRunning = true;

	sigset_t new_mask;
	sigemptyset(&new_mask);
	sigaddset(&new_mask, SIGUSR1);

	// Unblock SIGUSR1
	pthread_sigmask(SIG_UNBLOCK, &new_mask, NULL);

	int display_number = atoi(TQString(XDisplayString(tqt_xdisplay())).replace(":","").ascii());

	if (display_number < 0) {
		printf("[kdesktop_lock] Warning: unable to create control socket.  Interactive logon modules may not function properly.\n");
		mRunning = false;
		TQApplication::eventLoop()->exit(-1);
		return;
	}

	char fifo_file[PATH_MAX];
	char fifo_file_out[PATH_MAX];
	snprintf(fifo_file, PATH_MAX, FIFO_FILE, display_number);
	snprintf(fifo_file_out, PATH_MAX, FIFO_FILE_OUT, display_number);

	/* Create the FIFOs if they do not exist */
	umask(0);
	mkdir(FIFO_DIR,0644);
	mknod(fifo_file, S_IFIFO|0644, 0);
	chmod(fifo_file, 0644);

	mParent->mPipe_fd = open(fifo_file, O_RDONLY | O_NONBLOCK);
	if (mParent->mPipe_fd > -1) {
		mParent->mPipeOpen = true;
	}

	mknod(fifo_file_out, S_IFIFO|0600, 0);
	chmod(fifo_file_out, 0600);

	mParent->mPipe_fd_out = open(fifo_file_out, O_RDWR | O_NONBLOCK);
	if (mParent->mPipe_fd_out > -1) {
		mParent->mPipeOpen_out = true;
	}

	if (!mParent->mPipeOpen) {
		printf("[kdesktop_lock] Warning: unable to create control socket '%s'.  Interactive logon modules may not function properly.\n", fifo_file);
		mRunning = false;
		TQApplication::eventLoop()->exit(-1);
		return;
	}

	int numread;
	int retval;
	fd_set rfds;
	FD_ZERO(&rfds);
	FD_SET(mParent->mPipe_fd, &rfds);
	TQByteArray readbuf(128);

	while (mParent->mPipeOpen && !mTerminate) {
		TQString inputcommand = "";

		// Wait for mParent->mPipe_fd to receive input
		retval = select(mParent->mPipe_fd + 1, &rfds, NULL, NULL, NULL);
		if (retval < 0) {
			// ERROR
		}
		else if (retval) {
			// New data is available
			readbuf[0]=' ';
			numread = read(mParent->mPipe_fd, readbuf.data(), 128);
			readbuf[numread] = 0;
			if (numread > 0) {
				inputcommand += readbuf;
				emit processCommand(inputcommand);
			}
		}
	}

	mRunning = false;
	TQApplication::eventLoop()->exit(0);
	return;
}

void ControlPipeHandlerObject::terminateThread() {
	if (mRunning) {
		mTerminate = true;
		pthread_kill(mThreadID, SIGUSR1);
	}
}

#include "lockprocess.moc"