tdebase/kdesktop/lock/lockdlg.cpp

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

#include <config.h>

#include "lockprocess.h"
#include "lockdlg.h"
#include "kdesktopsettings.h"

#include <kcheckpass.h>
#include <dmctl.h>

#include <tdeapplication.h>
#include <tdelocale.h>
#include <kpushbutton.h>
#include <kseparator.h>
#include <kstandarddirs.h>
#include <tdeglobalsettings.h>
#include <tdeconfig.h>
#include <kiconloader.h>
#include <tdesu/defaults.h>
#include <kpassdlg.h>
#include <kdebug.h>
#include <kuser.h>
#include <dcopref.h>
#include <tdemessagebox.h>

#include <tqlayout.h>
#include <tqpushbutton.h>
#include <tqmessagebox.h>
#include <tqsimplerichtext.h>
#include <tqlabel.h>
#include <tqstringlist.h>
#include <tqfontmetrics.h>
#include <tqstyle.h>
#include <tqapplication.h>
#include <tqlistview.h>
#include <tqheader.h>
#include <tqcheckbox.h>
#include <tqfile.h>

#include <ctype.h>
#include <unistd.h>
#include <stdlib.h>
#include <errno.h>
#include <pwd.h>
#include <sys/types.h>
#include <sys/socket.h>

#include <X11/Xutil.h>
#include <X11/keysym.h>
#include <X11/Xatom.h>
#include <fixx11h.h>

#ifdef HAVE_KRB5
#include <libtdeldap.h>
#endif

#ifndef AF_LOCAL
# define AF_LOCAL	AF_UNIX
#endif

#define PASSDLG_HIDE_TIMEOUT dialogHideTimeout

extern bool trinity_desktop_lock_autohide_lockdlg;
extern bool trinity_desktop_lock_delay_screensaver_start;
extern bool trinity_desktop_lock_use_system_modal_dialogs;
extern bool trinity_desktop_lock_use_sak;
extern bool trinity_desktop_lock_hide_cancel_button;

int dialogHideTimeout = 10*1000;

//===========================================================================
//
// Simple dialog for entering a password.
//
PasswordDlg::PasswordDlg(LockProcess *parent, GreeterPluginHandle *plugin)
	: TQDialog(parent, "password dialog", true, (trinity_desktop_lock_use_system_modal_dialogs?((WFlags)WStyle_StaysOnTop):((WFlags)WX11BypassWM))),
	mPlugin( plugin ),
	mCapsLocked(-1),
	mUnlockingFailed(false),
	validUserCardInserted(false),
	showInfoMessages(true),
	mCardLoginInProgress(false)
{
	init(plugin);
}

//
// Simple dialog for entering a password.
// This version includes support for displaying the date and time the lock process was started
//
PasswordDlg::PasswordDlg(LockProcess *parent, GreeterPluginHandle *plugin, TQDateTime lockStartDateTime)
	: TQDialog(parent, "password dialog", true, (trinity_desktop_lock_use_system_modal_dialogs?((WFlags)WStyle_StaysOnTop):((WFlags)WX11BypassWM))),
	mPlugin( plugin ),
	mCapsLocked(-1),
	mUnlockingFailed(false),
	showInfoMessages(true),
	mCardLoginInProgress(false)
{
	m_lockStartDT = lockStartDateTime;
	init(plugin);
}

void PasswordDlg::init(GreeterPluginHandle *plugin)
{
	dialogHideTimeout = trinity_desktop_lock_delay_screensaver_start?KDesktopSettings::timeout()*1000:10*1000;

	if (trinity_desktop_lock_use_system_modal_dialogs) {
		// Signal that we do not want any window controls to be shown at all
		Atom kde_wm_system_modal_notification;
		kde_wm_system_modal_notification = XInternAtom(tqt_xdisplay(), "_TDE_WM_MODAL_SYS_NOTIFICATION", False);
		XChangeProperty(tqt_xdisplay(), winId(), kde_wm_system_modal_notification, XA_INTEGER, 32, PropModeReplace, (unsigned char *) "TRUE", 1L);
	}
	setCaption(i18n("Desktop Session Locked"));

	frame = new TQFrame( this );
	if (trinity_desktop_lock_use_system_modal_dialogs) {
		frame->setFrameStyle( TQFrame::NoFrame );
	}
	else {
		frame->setFrameStyle( TQFrame::Panel | TQFrame::Raised );
	}
	frame->setLineWidth( 2 );

	TQLabel *pixLabel = NULL;
	if (!trinity_desktop_lock_use_system_modal_dialogs) {
		pixLabel = new TQLabel( frame, "pixlabel" );
		pixLabel->setPixmap(DesktopIcon("system-lock-screen"));
	}

	KUser user;
	TQLabel *greetLabel;
	if (trinity_desktop_lock_use_system_modal_dialogs) {
		greetLabel = new TQLabel( user.fullName().isEmpty() ?
			"<b>" + i18n("This computer is in use and has been locked.") + "</b>" :
			"<b>" + i18n("This computer is in use and has been locked.") + "</b><br><nobr>" + i18n("Only '%1' may unlock this session.").arg( user.fullName() ), frame );
	}
	else {
		greetLabel = new TQLabel( user.fullName().isEmpty() ?
			i18n("<nobr><b>The session is locked</b><br>") :
			i18n("<nobr><b>The session was locked by %1</b><br>").arg( user.fullName() ), frame );
	}

	TQLabel *lockDTLabel = NULL;
	if ((trinity_desktop_lock_use_system_modal_dialogs) && (!m_lockStartDT.isNull())) {
		lockDTLabel = new TQLabel(i18n("This session has been locked since %1").arg(m_lockStartDT.toString()), frame);
	}

	mStatusLabel = new TQLabel( "<b> </b>", frame );
	mStatusLabel->setAlignment( TQLabel::AlignCenter );

	mLayoutButton = new TQPushButton( frame );
	mLayoutButton->setFlat( true );

	KSeparator *sep = new KSeparator( KSeparator::HLine, frame );

	mNewSessButton = new KPushButton( KGuiItem(i18n("Sw&itch User..."), "fork"), frame );
	ok = new KPushButton( i18n("Unl&ock"), frame );
	ok->setDefault(true);

	bool show_cancel_button = !trinity_desktop_lock_hide_cancel_button
					|| trinity_desktop_lock_use_sak
					|| !trinity_desktop_lock_use_system_modal_dialogs;
	if (show_cancel_button) {
		cancel = new KPushButton( KStdGuiItem::cancel(), frame );
	}
	else {
		cancel = NULL;
	}

	greet = plugin->info->create( this, 0, this, mLayoutButton, TQString::null,
		KGreeterPlugin::Authenticate, KGreeterPlugin::ExUnlock );

	TQVBoxLayout *unlockDialogLayout = new TQVBoxLayout( this );
	unlockDialogLayout->addWidget( frame );

	TQHBoxLayout *layStatus = new TQHBoxLayout( 0, 0, KDialog::spacingHint());
	layStatus->addWidget( mStatusLabel );
	layStatus->addWidget( mLayoutButton );

	TQHBoxLayout *layButtons = new TQHBoxLayout( 0, 0, KDialog::spacingHint());
	layButtons->addWidget( mNewSessButton );
	layButtons->addStretch();
	layButtons->addWidget(ok);
	if (show_cancel_button) {
		layButtons->addWidget(cancel);
	}

	if (trinity_desktop_lock_use_system_modal_dialogs) {
		KSMModalDialogHeader* theader = new KSMModalDialogHeader( frame );

		if (!m_lockStartDT.isNull()) {
			frameLayout = new TQGridLayout( frame, 1, 1, KDialog::marginHint(), KDialog::spacingHint() );
			frameLayout->addMultiCellWidget( theader, 0, 0, 0, 2, Qt::AlignTop );
			frameLayout->addWidget( greetLabel, 1, 1 );
			frameLayout->addWidget( lockDTLabel, 2, 1 );
			frameLayout->addItem( greet->getLayoutItem(), 3, 1 );
			frameLayout->addLayout( layStatus, 4, 1 );
			frameLayout->addMultiCellWidget( sep, 5, 5, 0, 1 );
			frameLayout->addMultiCellLayout( layButtons, 6, 6, 0, 1 );
		}
		else {
			frameLayout = new TQGridLayout( frame, 1, 1, KDialog::marginHint(), KDialog::spacingHint() );
			frameLayout->addMultiCellWidget( theader, 0, 0, 0, 2, Qt::AlignTop );
			frameLayout->addWidget( greetLabel, 1, 1 );
			frameLayout->addItem( greet->getLayoutItem(), 2, 1 );
			frameLayout->addLayout( layStatus, 3, 1 );
			frameLayout->addMultiCellWidget( sep, 4, 4, 0, 1 );
			frameLayout->addMultiCellLayout( layButtons, 5, 5, 0, 1 );
		}
	}
	else {
		frameLayout = new TQGridLayout( frame, 1, 1, KDialog::marginHint(), KDialog::spacingHint() );
		frameLayout->addMultiCellWidget( pixLabel, 0, 2, 0, 0, Qt::AlignTop );
		frameLayout->addWidget( greetLabel, 0, 1 );
		frameLayout->addItem( greet->getLayoutItem(), 1, 1 );
		frameLayout->addLayout( layStatus, 2, 1 );
		frameLayout->addMultiCellWidget( sep, 3, 3, 0, 1 );
		frameLayout->addMultiCellLayout( layButtons, 4, 4, 0, 1 );
	}

	if (show_cancel_button) {
		setTabOrder( ok, cancel );
		setTabOrder( cancel, mNewSessButton );
	}
	else {
		setTabOrder( ok, mNewSessButton );
	}
	setTabOrder( mNewSessButton, mLayoutButton );

	connect(mLayoutButton, TQT_SIGNAL(clicked()), this, TQT_SLOT(layoutClicked()));
	if (show_cancel_button) {
		connect(cancel, TQT_SIGNAL(clicked()), TQT_SLOT(reject()));
	}
	connect(ok, TQT_SIGNAL(clicked()), TQT_SLOT(slotOK()));
	connect(mNewSessButton, TQT_SIGNAL(clicked()), TQT_SLOT(slotSwitchUser()));

	if (!DM().isSwitchable() || !kapp->authorize("switch_user")) {
		mNewSessButton->hide();
	}

	installEventFilter(this);
	setFixedSize( sizeHint() );

	mFailedTimerId = 0;
	mTimeoutTimerId = startTimer(PASSDLG_HIDE_TIMEOUT);
	connect(tqApp, TQT_SIGNAL(activity()), TQT_SLOT(slotActivity()) );

	greet->setInfoMessageDisplay(showInfoMessages);
	greet->start();

	DCOPRef kxkb("kxkb", "kxkb");
	if( !kxkb.isNull() ) {
		DCOPReply reply = kxkb.call("getLayoutsList");
		if (reply.isValid()) {
			layoutsList = reply;
		}
		reply = kxkb.call("getCurrentLayout");
		TQString currentLayout;
		if (reply.isValid()) {
			reply.get(currentLayout);
		}
		if( !currentLayout.isEmpty() && layoutsList.count() > 1 ) {
			currLayout = layoutsList.find(currentLayout);
			if (currLayout == layoutsList.end())
				setLayoutText("err");
			else
				setLayoutText(*currLayout);
		}
		else {
			mLayoutButton->hide();
		}
	}
	else {
		mLayoutButton->hide(); // no kxkb running
	}
	capsLocked();

	if (static_cast< LockProcess* >(parent())->cryptographicCardDevice()) {
		attemptCardLogin();
	}
}

PasswordDlg::~PasswordDlg()
{
	hide();
	frameLayout->removeItem( greet->getLayoutItem() );
	delete greet;
}

void PasswordDlg::reject()
{
	if (!trinity_desktop_lock_hide_cancel_button
		|| trinity_desktop_lock_use_sak
		|| !trinity_desktop_lock_use_system_modal_dialogs
		|| trinity_desktop_lock_autohide_lockdlg) {
		TQDialog::reject();
	}
} 

void PasswordDlg::layoutClicked()
{
	if( ++currLayout == layoutsList.end() ) {
		currLayout = layoutsList.begin();
	}

	DCOPRef kxkb("kxkb", "kxkb");
	setLayoutText( kxkb.call("setLayout", *currLayout) ? *currLayout : "err" );

}

void PasswordDlg::setLayoutText( const TQString &txt )
{
	mLayoutButton->setText( txt );
	TQSize sz = mLayoutButton->fontMetrics().size( 0, txt );
	int mrg = mLayoutButton->style().pixelMetric( TQStyle::PM_ButtonMargin ) * 2;
	mLayoutButton->setFixedSize( sz.width() + mrg, sz.height() + mrg );
}

void PasswordDlg::updateLabel()
{
	if (mUnlockingFailed) {
		mStatusLabel->setPaletteForegroundColor(Qt::black);
		mStatusLabel->setText(i18n("<b>Unlocking failed</b>"));
// 		mStatusLabel->show();
	}
	else if (mCapsLocked) {
		mStatusLabel->setPaletteForegroundColor(Qt::red);
		mStatusLabel->setText(i18n("<b>Warning: Caps Lock on</b>"));
// 		mStatusLabel->show();
	}
	else {
		mStatusLabel->setText("<b> </b>");
// 		mStatusLabel->hide();
	}
}

//---------------------------------------------------------------------------
//
// Handle timer events.
//
void PasswordDlg::timerEvent(TQTimerEvent *ev)
{
	if (ev->timerId() == mTimeoutTimerId) {
		if (trinity_desktop_lock_autohide_lockdlg) {
			// Force dialog rejection regardless of the value of trinity_desktop_lock_hide_cancel_button
			TQDialog::reject();
		}
		else {
			slotActivity();
		}
	}
	else if (ev->timerId() == mFailedTimerId) {
		killTimer(mFailedTimerId);
		mFailedTimerId = 0;
		// Show the normal password prompt.
		mUnlockingFailed = false;
		updateLabel();
		ok->setEnabled(true);
		if (cancel) {
			cancel->setEnabled(true);
		}
		mNewSessButton->setEnabled( true );
		greet->revive();
		greet->start();
	}
}

bool PasswordDlg::eventFilter(TQObject *, TQEvent *ev)
{
	if (ev->type() == TQEvent::KeyPress || ev->type() == TQEvent::KeyRelease) {
		capsLocked();
	}
	return false;
}

void PasswordDlg::slotActivity()
{
	if (mTimeoutTimerId) {
		killTimer(mTimeoutTimerId);
		mTimeoutTimerId = startTimer(PASSDLG_HIDE_TIMEOUT);
	}
}

////// kckeckpass interface code

int PasswordDlg::Reader (void *buf, int count)
{
	int ret, rlen;

	for (rlen = 0; rlen < count; ) {
dord:
		ret = ::read (sFd, (void *)((char *)buf + rlen), count - rlen);
		if (ret < 0) {
			if (errno == EINTR) {
				goto dord;
			}
			if (errno == EAGAIN) {
				break;
			}
			return -1;
		}
		if (!ret) {
			break;
		}
		rlen += ret;
	}
	return rlen;
}

bool PasswordDlg::GRead (void *buf, int count)
{
	return Reader (buf, count) == count;
}

bool PasswordDlg::GWrite (const void *buf, int count)
{
	return ::write (sFd, buf, count) == count;
}

bool PasswordDlg::GSendInt (int val)
{
	return GWrite (&val, sizeof(val));
}

bool PasswordDlg::GSendStr (const char *buf)
{
	int len = buf ? ::strlen (buf) + 1 : 0;
	return GWrite (&len, sizeof(len)) && GWrite (buf, len);
}

bool PasswordDlg::GSendArr (int len, const char *buf)
{
	return GWrite (&len, sizeof(len)) && GWrite (buf, len);
}

bool PasswordDlg::GRecvInt (int *val)
{
	return GRead (val, sizeof(*val));
}

bool PasswordDlg::GRecvArr (char **ret)
{
	int len;
	char *buf;

	if (!GRecvInt(&len)) {
		return false;
	}
	if (!len) {
		*ret = 0;
		return true;
	}
	if (!(buf = (char *)::malloc (len))) {
		return false;
	}
	*ret = buf;
	return GRead (buf, len);
}

void PasswordDlg::reapVerify()
{
	::close( sFd );
	int status;
	pid_t retpid = ::waitpid( sPid, &status, 0 );
	if (retpid < 0) {
		// FIXME
		// ERROR
	}
	else {
		if (WIFEXITED(status)) {
			switch (WEXITSTATUS(status)) {
			case AuthOk:
				{
					KUser userinfo;
					TQString fileName = userinfo.homeDir() + "/.tde_card_login_state";
					TQFile flagFile(fileName);
					if (validUserCardInserted) {
						// Card was likely used to log in
						if (flagFile.open(IO_WriteOnly)) {
							flagFile.writeBlock("1\n", 2);
							flagFile.close();
						}
					}
					else {
						// Card was not used to log in
						flagFile.remove();
					}

					// Signal success
					greet->succeeded();
					accept();
					return;
				}
			case AuthBad:
				greet->failed();
				mUnlockingFailed = true;
				updateLabel();
				mFailedTimerId = startTimer(1500);
				ok->setEnabled(false);
				if (cancel) {
					cancel->setEnabled(false);
				}
				mNewSessButton->setEnabled( false );
				return;
			case AuthAbort:
				return;
			}
		}
		else if (WIFSIGNALED(status)) {
			// FIXME
			// ERROR
		}
	}
	cantCheck();
}

void PasswordDlg::handleVerify()
{
	int ret;
	char *arr;

	while (GRecvInt( &ret )) {
		switch (ret) {
		case ConvGetBinary:
			if (!GRecvArr( &arr ))
				break;
			greet->binaryPrompt( arr, false );
			if (arr)
				::free( arr );
			return;
		case ConvGetNormal:
			if (!GRecvArr( &arr ))
				break;
			greet->textPrompt( arr, true, false );
			if (arr)
				::free( arr );
			return;
		case ConvGetHidden:
			if (!GRecvArr( &arr ))
				break;
			if (arr && (arr[0] != 0)) {
				// Reset password entry and change text
				greet->start();
				greet->textPrompt( arr, false, false );

				// Force relayout
				setFixedSize( sizeHint().width(), sizeHint().height() + 1 );
				setFixedSize( sizeHint() );

				// Check if cryptographic card login is being used
				if (mCardLoginInProgress) {
					// Attempt authentication if configured
					TDECryptographicCardDevice* cdevice = static_cast<LockProcess*>(parent())->cryptographicCardDevice();
					if (cdevice) {
						TQString autoPIN = cdevice->autoPIN();
						if (autoPIN != TQString::null) {
							greet->setPassword(autoPIN);
							TQTimer::singleShot(0, this, SLOT(slotOK()));
						}
					}
					mCardLoginInProgress = false;
				}
			}
			else {
				greet->textPrompt( arr, false, false );
			}
			if (arr)
				::free( arr );
			return;
		case ConvPutInfo:
			if (!GRecvArr( &arr ))
				break;
			if (!greet->textMessage( arr, false ))
				static_cast< LockProcess* >(parent())->msgBox( TQMessageBox::Information, TQString::fromLocal8Bit( arr ) );
			::free( arr );
			continue;
		case ConvPutError:
			if (!GRecvArr( &arr ))
				break;
			if (!greet->textMessage( arr, true ))
				static_cast< LockProcess* >(parent())->msgBox( TQMessageBox::Warning, TQString::fromLocal8Bit( arr ) );
			::free( arr );
			continue;
		}
		break;
	}
	reapVerify();
}

////// greeter plugin callbacks

void PasswordDlg::gplugReturnText( const char *text, int tag )
{
	GSendStr( text );
	if (text) {
		GSendInt( tag );
	}
	handleVerify();
}

void PasswordDlg::gplugReturnBinary( const char *data )
{
	if (data) {
		unsigned const char *up = (unsigned const char *)data;
		int len = up[3] | (up[2] << 8) | (up[1] << 16) | (up[0] << 24);
		if (!len) {
			GSendArr( 4, data );
		}
		else {
			GSendArr( len, data );
		}
	}
	else {
		GSendArr( 0, 0 );
	}
	handleVerify();
}

void PasswordDlg::gplugSetUser( const TQString & )
{
	// ignore ...
}

void PasswordDlg::cantCheck()
{
	greet->failed();
	static_cast< LockProcess* >(parent())->msgBox( TQMessageBox::Critical,
		i18n("Cannot unlock the session because the authentication system failed to work;\n"
			"you must kill kdesktop_lock (pid %1) manually.").arg(getpid()) );
	greet->revive();
}

//---------------------------------------------------------------------------
//
// Starts the kcheckpass process to check the user's password.
//
void PasswordDlg::gplugStart()
{
	int sfd[2];
	char fdbuf[16];

	if (::socketpair(AF_LOCAL, SOCK_STREAM, 0, sfd)) {
		cantCheck();
		return;
	}
	if ((sPid = ::fork()) < 0) {
		::close(sfd[0]);
		::close(sfd[1]);
		cantCheck();
		return;
	}
	if (!sPid) {
		::close(sfd[0]);
		sprintf(fdbuf, "%d", sfd[1]);
		execlp("kcheckpass", "kcheckpass",
#ifdef HAVE_PAM
		"-c", TDESCREENSAVER_PAM_SERVICE,
#endif
		"-m", mPlugin->info->method,
		"-S", fdbuf,
		(char *)0);
		exit(20);
	}
	::close(sfd[1]);
	sFd = sfd[0];
	handleVerify();
}

void PasswordDlg::gplugActivity()
{
	slotActivity();
}

void PasswordDlg::gplugMsgBox( TQMessageBox::Icon type, const TQString &text )
{
	TQDialog dialog( this, 0, 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
		Atom kde_wm_system_modal_notification;
		kde_wm_system_modal_notification = XInternAtom(tqt_xdisplay(), "_TDE_WM_MODAL_SYS_NOTIFICATION", False);
		XChangeProperty(tqt_xdisplay(), dialog.winId(), kde_wm_system_modal_notification, XA_INTEGER, 32, PropModeReplace, (unsigned char *) "TRUE", 1L);
	}
	dialog.setCaption(i18n("Authentication Subsystem Notice"));
	TQFrame *winFrame = new TQFrame( &dialog );
	if (trinity_desktop_lock_use_system_modal_dialogs) {
		winFrame->setFrameStyle( TQFrame::NoFrame );
	}
	else {
		winFrame->setFrameStyle( TQFrame::WinPanel | TQFrame::Raised );
	}
	winFrame->setLineWidth( 2 );
	TQVBoxLayout *vbox = new TQVBoxLayout( &dialog );
	vbox->addWidget( winFrame );

	TQLabel *label1 = new TQLabel( winFrame );
	label1->setPixmap( TQMessageBox::standardIcon( type ) );
	TQLabel *label2 = new TQLabel( text, winFrame );
	KPushButton *button = new KPushButton( KStdGuiItem::ok(), winFrame );
	button->setDefault( true );
	button->setSizePolicy( TQSizePolicy( TQSizePolicy::Preferred, TQSizePolicy::Preferred ) );
	connect( button, TQT_SIGNAL( clicked() ), TQT_SLOT( accept() ) );

	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 );

	static_cast< LockProcess* >(parent())->execDialog( &dialog );
}

void PasswordDlg::slotOK()
{
	greet->next();
}


void PasswordDlg::show()
{
	TQDialog::show();
	TQApplication::flushX();
	setFixedSize( sizeHint() );
}

void PasswordDlg::slotStartNewSession()
{
	if (!KMessageBox::shouldBeShownContinue( ":confirmNewSession" )) {
		DM().startReserve();
		return;
	}

	killTimer(mTimeoutTimerId);
	mTimeoutTimerId = 0;

	TQDialog *dialog = new TQDialog( this, "warnbox", 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
		Atom kde_wm_system_modal_notification;
		kde_wm_system_modal_notification = XInternAtom(tqt_xdisplay(), "_TDE_WM_MODAL_SYS_NOTIFICATION", False);
		XChangeProperty(tqt_xdisplay(), dialog->winId(), kde_wm_system_modal_notification, XA_INTEGER, 32, PropModeReplace, (unsigned char *) "TRUE", 1L);
	}
	dialog->setCaption(i18n("New Session"));

	TQFrame *winFrame = new TQFrame( dialog );
	if (trinity_desktop_lock_use_system_modal_dialogs) {
		winFrame->setFrameStyle( TQFrame::NoFrame );
	}
	else {
		winFrame->setFrameStyle( TQFrame::WinPanel | TQFrame::Raised );
	}
	winFrame->setLineWidth( 2 );
	TQVBoxLayout *vbox = new TQVBoxLayout( dialog );
	vbox->addWidget( winFrame );

	TQLabel *label1 = new TQLabel( winFrame );
	label1->setPixmap( TQMessageBox::standardIcon( TQMessageBox::Warning ) );
	TQString qt_text = i18n("You have chosen to open another desktop session "
				"instead of resuming the current one.<br>"
				"The current session will be hidden "
				"and a new login screen will be displayed.<br>"
				"An F-key is assigned to each session; "
				"F%1 is usually assigned to the first session, "
				"F%2 to the second session and so on. "
				"You can switch between sessions by pressing "
				"Ctrl, Alt and the appropriate F-key at the same time. "
				"Additionally, the TDE Panel and Desktop menus have "
				"actions for switching between sessions.")
				.arg(7).arg(8);
	TQLabel *label2 = new TQLabel( qt_text, winFrame );
	KPushButton *okbutton = new KPushButton( KGuiItem(i18n("&Start New Session"), "fork"), winFrame );
	okbutton->setDefault( true );
	connect( okbutton, TQT_SIGNAL( clicked() ), dialog, TQT_SLOT( accept() ) );
	KPushButton *cbutton = new KPushButton( KStdGuiItem::cancel(), winFrame );
	connect( cbutton, TQT_SIGNAL( clicked() ), dialog, TQT_SLOT( reject() ) );

	TQBoxLayout *mbox = new TQVBoxLayout( winFrame, KDialog::marginHint(), KDialog::spacingHint() );

	TQGridLayout *grid = new TQGridLayout( mbox, 2, 2, 2 * KDialog::spacingHint() );
	grid->setMargin( KDialog::marginHint() );
	grid->addWidget( label1, 0, 0, Qt::AlignCenter );
	grid->addWidget( label2, 0, 1, Qt::AlignCenter );
	TQCheckBox *cb = new TQCheckBox( i18n("&Do not ask again"), winFrame );
	grid->addMultiCellWidget( cb, 1,1, 0,1 );

	TQBoxLayout *hbox = new TQHBoxLayout( mbox, KDialog::spacingHint() );
	hbox->addStretch( 1 );
	hbox->addWidget( okbutton );
	hbox->addStretch( 1 );
	hbox->addWidget( cbutton );
	hbox->addStretch( 1 );

	// stolen from kmessagebox
	int pref_width = 0;
	int pref_height = 0;
	// Calculate a proper size for the text.
	{
		TQSimpleRichText rt(qt_text, dialog->font());
		TQRect rect = TDEGlobalSettings::desktopGeometry(dialog);

		pref_width = rect.width() / 3;
		rt.setWidth(pref_width);
		int used_width = rt.widthUsed();
		pref_height = rt.height();
		if (used_width <= pref_width) {
			while(true) {
				int new_width = (used_width * 9) / 10;
				rt.setWidth(new_width);
				int new_height = rt.height();
				if (new_height > pref_height) {
					break;
				}
				used_width = rt.widthUsed();
				if (used_width > new_width) {
					break;
				}
			}
			pref_width = used_width;
		}
		else {
			if (used_width > (pref_width *2))
			pref_width = pref_width *2;
			else
			pref_width = used_width;
		}
	}
	label2->setFixedSize(TQSize(pref_width+10, pref_height));

	int ret = static_cast< LockProcess* >( parent())->execDialog( dialog );

	delete dialog;

	if (ret == TQDialog::Accepted) {
		if (cb->isChecked()) {
			KMessageBox::saveDontShowAgainContinue( ":confirmNewSession" );
		}
		DM().startReserve();
	}

	mTimeoutTimerId = startTimer(PASSDLG_HIDE_TIMEOUT);
}

class LockListViewItem : public TQListViewItem {
	public:
		LockListViewItem( TQListView *parent, const TQString &sess, const TQString &loc, int _vt ) : TQListViewItem( parent )
		, vt( _vt )
		{
			setText( 0, sess );
			setText( 1, loc );
		}

		int vt;
};

void PasswordDlg::slotSwitchUser()
{
	int p = 0;
	DM dm;

	TQDialog dialog( this, "sessbox", 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
		Atom kde_wm_system_modal_notification;
		kde_wm_system_modal_notification = XInternAtom(tqt_xdisplay(), "_TDE_WM_MODAL_SYS_NOTIFICATION", False);
		XChangeProperty(tqt_xdisplay(), dialog.winId(), kde_wm_system_modal_notification, XA_INTEGER, 32, PropModeReplace, (unsigned char *) "TRUE", 1L);
	}
	dialog.setCaption(i18n("Switch User"));

	TQFrame *winFrame = new TQFrame( &dialog );
	if (trinity_desktop_lock_use_system_modal_dialogs) {
		winFrame->setFrameStyle( TQFrame::NoFrame );
	}
	else {
		winFrame->setFrameStyle( TQFrame::WinPanel | TQFrame::Raised );
	}
	winFrame->setLineWidth( 2 );
	TQBoxLayout *vbox = new TQVBoxLayout( &dialog );
	vbox->addWidget( winFrame );

	TQBoxLayout *hbox = new TQHBoxLayout( winFrame, KDialog::marginHint(), KDialog::spacingHint() );

	TQBoxLayout *vbox1 = new TQVBoxLayout( hbox, KDialog::spacingHint() );
	TQBoxLayout *vbox2 = new TQVBoxLayout( hbox, KDialog::spacingHint() );

	KPushButton *btn;

	SessList sess;
	if (dm.localSessions( sess )) {
		lv = new TQListView( winFrame );
		connect( lv, TQT_SIGNAL(doubleClicked(TQListViewItem *, const TQPoint&, int)), TQT_SLOT(slotSessionActivated()) );
		connect( lv, TQT_SIGNAL(doubleClicked(TQListViewItem *, const TQPoint&, int)), &dialog, TQT_SLOT(accept()) );
		lv->setAllColumnsShowFocus( true );
		lv->addColumn( i18n("Session") );
		lv->addColumn( i18n("Location") );
		lv->setColumnWidthMode( 0, TQListView::Maximum );
		lv->setColumnWidthMode( 1, TQListView::Maximum );
		TQListViewItem *itm = 0;
		TQString user, loc;
		int ns = 0;
		for (SessList::ConstIterator it = sess.begin(); it != sess.end(); ++it) {
			DM::sess2Str2( *it, user, loc );
			itm = new LockListViewItem( lv, user, loc, (*it).vt );
			if (!(*it).vt) {
				itm->setEnabled( false );
			}
			if ((*it).self) {
				lv->setCurrentItem( itm );
				itm->setSelected( true );
			}
			ns++;
		}
		int fw = lv->frameWidth() * 2;
		TQSize hds( lv->header()->sizeHint() );
		lv->setMinimumWidth( fw + hds.width() +
		(ns > 10 ? style().pixelMetric(TQStyle::PM_ScrollBarExtent) : 0 ) );
		lv->setFixedHeight( fw + hds.height() +
		itm->height() * (ns < 6 ? 6 : ns > 10 ? 10 : ns) );
		lv->header()->adjustHeaderSize();
		vbox1->addWidget( lv );

		btn = new KPushButton( KGuiItem(i18n("session", "&Activate"), "fork"), winFrame );
		connect( btn, TQT_SIGNAL(clicked()), TQT_SLOT(slotSessionActivated()) );
		connect( btn, TQT_SIGNAL(clicked()), &dialog, TQT_SLOT(accept()) );
		vbox2->addWidget( btn );
		vbox2->addStretch( 2 );
	}

	if (kapp->authorize("start_new_session") && (p = dm.numReserve()) >= 0) {
		btn = new KPushButton( KGuiItem(i18n("Start &New Session"), "fork"), winFrame );
		connect( btn, TQT_SIGNAL(clicked()), TQT_SLOT(slotStartNewSession()) );
		connect( btn, TQT_SIGNAL(clicked()), &dialog, TQT_SLOT(accept()) );
		if (!p)
		btn->setEnabled( false );
		vbox2->addWidget( btn );
		vbox2->addStretch( 1 );
	}

	btn = new KPushButton( KStdGuiItem::cancel(), winFrame );
	connect( btn, TQT_SIGNAL(clicked()), &dialog, TQT_SLOT(reject()) );
	vbox2->addWidget( btn );

	dialog.setFixedSize( dialog.sizeHint() );

	int ret = static_cast< LockProcess* >(parent())->execDialog( &dialog );
	if (ret != TQDialog::Rejected) {
		TQDialog::reject();
	}
}

void PasswordDlg::slotSessionActivated()
{
	LockListViewItem *itm = (LockListViewItem *)lv->currentItem();
	if (itm && itm->vt > 0) {
		DM().switchVT( itm->vt );
	}
}

void PasswordDlg::capsLocked()
{
	unsigned int lmask;
	Window dummy1, dummy2;
	int dummy3, dummy4, dummy5, dummy6;
	XQueryPointer(tqt_xdisplay(), DefaultRootWindow( tqt_xdisplay() ), &dummy1, &dummy2, &dummy3, &dummy4, &dummy5, &dummy6, &lmask);
	mCapsLocked = lmask & LockMask;
	updateLabel();
}

void PasswordDlg::attemptCardLogin() {
#ifdef HAVE_KRB5
	// Make sure card logins are enabled before attempting one
	if (!LDAPManager::pkcsLoginEnabled()) {
		return;
	}
#else
	// Don't enable card-based logins if Kerberos integration was disabled
	return;
#endif

	if (mCardLoginInProgress) {
		return;
	}
	mCardLoginInProgress = true;

	// FIXME
	// pam_pkcs11 is extremely chatty with no apparent way to disable the unwanted messages
	greet->setInfoMessageDisplay(false);

	validUserCardInserted = true;
	greet->setPasswordPrompt(i18n("PIN:"));

	// Force relayout
	setFixedSize(sizeHint().width(), sizeHint().height() + 1);
	setFixedSize(sizeHint());

	// Bypass initial password prompt
	greet->start();
	greet->setPassword("");
	TQTimer::singleShot(0, this, SLOT(slotOK()));
}

void PasswordDlg::resetCardLogin() {
	validUserCardInserted = false;
	greet->abort();
	greet->clear();
	greet->revive();
	greet->start();
	greet->setPasswordPrompt(TQString::null);

	// Force relayout
	setFixedSize(sizeHint().width(), sizeHint().height() + 1);
	setFixedSize(sizeHint());

	// Restore information message display settings
        greet->setInfoMessageDisplay(showInfoMessages);

	mCardLoginInProgress = false;
}

#include "lockdlg.moc"