//===========================================================================
//
// This file is part of the KDE project
//
// Copyright (c) 2010-2011 Timothy Pearson <kb9vqf@pearsoncomputing.net>

#include <config.h>

#include "sakdlg.h"

#include <dmctl.h>

#include <ksslcertificate.h>

#include <tdehardwaredevices.h>
#include <tdecryptographiccarddevice.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 <kdialog.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 <tqtimer.h>

#include <fcntl.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>

#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include <errno.h>
#include <limits.h>
#include <dirent.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/select.h>
#include <sys/time.h>
#include <termios.h>
#include <signal.h>
#include <libgen.h>

#include "kfdialog.h"

#ifndef AF_LOCAL
# define AF_LOCAL	AF_UNIX
#endif

#define FIFO_DIR "/tmp/tdesocket-global/tdm"
#define FIFO_FILE "/tmp/tdesocket-global/tdm/tdmctl-%1"
#define FIFO_SAK_FILE "/tmp/tdesocket-global/tdm/tdmctl-sak-%1"

bool trinity_desktop_lock_use_system_modal_dialogs = TRUE;
extern bool trinity_desktop_lock_use_sak;

//===========================================================================
//
// Simple dialog for displaying an unlock status or recurring error message
//
SAKDlg::SAKDlg(TQWidget *parent)
    : TQDialog(parent, "information dialog", true, (trinity_desktop_lock_use_system_modal_dialogs?((WFlags)WStyle_StaysOnTop):((WFlags)WX11BypassWM))),
      closingDown(false), mUnlockingFailed(false)
{
	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(TDM_LOGIN_SCREEN_BASE_TITLE);

	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 );

	KSMModalDialogHeader* theader = new KSMModalDialogHeader( frame );

	KUser user;

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

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

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

	frameLayout = new TQGridLayout( frame, 1, 1, KDialog::marginHint(), KDialog::spacingHint() );
	frameLayout->addMultiCellWidget( theader, 0, 0, 0, 1, AlignTop | AlignLeft );
	frameLayout->addMultiCellLayout( layStatus, 1, 1, 0, 1, AlignLeft | AlignVCenter);

	mStatusLabel->setText("<b>" + i18n("Press Ctrl+Alt+Del to begin.") + "</b><p>" + i18n("This process helps keep your password secure.") + "<br>" + i18n("It prevents unauthorized users from emulating the login screen."));
	
	installEventFilter(this);

	mSAKProcess = new TDEProcess;
	*mSAKProcess << "tdmtsak" << "dm";
	connect(mSAKProcess, TQT_SIGNAL(processExited(TDEProcess*)), this, TQT_SLOT(slotSAKProcessExited()));
	mSAKProcess->start();

	// 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, TQT_SIGNAL(certificateListAvailable(TDECryptographicCardDevice*)), this, TQT_SLOT(cryptographicCardInserted(TDECryptographicCardDevice*)));
		connect(cdevice, TQT_SIGNAL(cardRemoved(TDECryptographicCardDevice*)), this, TQT_SLOT(cryptographicCardRemoved(TDECryptographicCardDevice*)));
		cdevice->enableCardMonitoring(true);
	}

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

void SAKDlg::slotSAKProcessExited()
{
	int retcode = mSAKProcess->exitStatus();
	if (retcode != 0) trinity_desktop_lock_use_sak = false;
	closingDown = true;
	hide();
}

void SAKDlg::processInputPipeCommand(TQString command) {
	command = command.replace('\n', "");
	TQStringList commandList = TQStringList::split('\t', command, false);
	if ((*(commandList.at(0))) == "CLOSE") {
		mSAKProcess->kill();
	}
}

void SAKDlg::cryptographicCardInserted(TDECryptographicCardDevice* cdevice) {
	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 != "") {
		DM dm;
		SessList sess;
		bool vt_active = false;
		bool user_active = false;
		if (dm.localSessions(sess)) {
			TQString user, loc;
			for (SessList::ConstIterator it = sess.begin(); it != sess.end(); ++it) {
				DM::sess2Str2(*it, user, loc);
				if (user.startsWith(login_name + ": ")) {
					// Found active session
					user_active = true;
				}
				if ((*it).self) {
					if ((*it).vt == dm.activeVT()) {
						vt_active = true;
					}
				}
			}
		}

		if (!user_active && vt_active) {
			// Terminate SAK dialog
			closeDialogForced();
		}
	}
}

void SAKDlg::cryptographicCardRemoved(TDECryptographicCardDevice* cdevice) {
	//
}

SAKDlg::~SAKDlg()
{
	if ((mSAKProcess) && (mSAKProcess->isRunning())) {
		mSAKProcess->kill(SIGTERM);
		delete mSAKProcess;
	}

	mControlPipeHandlerThread->terminate();
	mControlPipeHandlerThread->wait();
	delete mControlPipeHandler;
// 	delete mControlPipeHandlerThread;

	hide();
}

void SAKDlg::closeDialogForced()
{
	TQDialog::reject();
}

void SAKDlg::reject()
{
	//
}

void SAKDlg::updateLabel(TQString &txt)
{
	mStatusLabel->setPaletteForegroundColor(Qt::black);
	mStatusLabel->setText("<b>" + txt + "</b>");
}

void SAKDlg::show()
{
	TQDialog::show();
	TQApplication::flushX();
}

#include "sakdlg.moc"