barrier/src/gui/src/MainWindow.cpp

/*
 * synergy -- mouse and keyboard sharing utility
 * Copyright (C) 2012 Synergy Si Ltd.
 * Copyright (C) 2008 Volker Lanz (vl@fidra.de)
 * 
 * This package is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * found in the file LICENSE that should have accompanied this file.
 * 
 * This package is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

#define DOWNLOAD_URL "http://synergy-project.org/?source=gui"

#include <iostream>

#include "MainWindow.h"

#include "Fingerprint.h"
#include "PluginManager.h"
#include "AboutDialog.h"
#include "ServerConfigDialog.h"
#include "SettingsDialog.h"
#include "SetupWizard.h"
#include "ZeroconfService.h"
#include "DataDownloader.h"
#include "CommandProcess.h"
#include "EditionType.h"
#include "QUtility.h"
#include "ProcessorArch.h"

#include <QtCore>
#include <QtGui>
#include <QtNetwork>
#include <QNetworkAccessManager>
#include <QMenu>
#include <QMenuBar>
#include <QMessageBox>
#include <QFileDialog>
#include <QDesktopServices>

#if defined(Q_OS_MAC)
#include <ApplicationServices/ApplicationServices.h>
#endif

#if defined(Q_OS_WIN)
#define _WIN32_WINNT 0x0501
#define WIN32_LEAN_AND_MEAN
#include <Windows.h>
#endif

#if defined(Q_OS_WIN)
static const char synergyConfigName[] = "synergy.sgc";
static const QString synergyConfigFilter(QObject::tr("Synergy Configurations (*.sgc);;All files (*.*)"));
static QString bonjourBaseUrl = "http://synergy-project.org/bonjour/";
static const char bonjourFilename32[] = "Bonjour.msi";
static const char bonjourFilename64[] = "Bonjour64.msi";
static const char bonjourTargetFilename[] = "Bonjour.msi";
#else
static const char synergyConfigName[] = "synergy.conf";
static const QString synergyConfigFilter(QObject::tr("Synergy Configurations (*.conf);;All files (*.*)"));
#endif

static const char* synergyIconFiles[] =
{
	":/res/icons/16x16/synergy-disconnected.png",
	":/res/icons/16x16/synergy-disconnected.png",
	":/res/icons/16x16/synergy-connected.png",
	":/res/icons/16x16/synergy-transfering.png"
};

MainWindow::MainWindow(QSettings& settings, AppConfig& appConfig) :
	m_Settings(settings),
	m_AppConfig(appConfig),
	m_pSynergy(NULL),
	m_SynergyState(synergyDisconnected),
	m_ServerConfig(&m_Settings, 5, 3, m_AppConfig.screenName(), this),
	m_pTempConfigFile(NULL),
	m_pTrayIcon(NULL),
	m_pTrayIconMenu(NULL),
	m_AlreadyHidden(false),
	m_pMenuBar(NULL),
	m_pMenuFile(NULL),
	m_pMenuEdit(NULL),
	m_pMenuWindow(NULL),
	m_pMenuHelp(NULL),
	m_pZeroconfService(NULL),
	m_pDataDownloader(NULL),
	m_DownloadMessageBox(NULL),
	m_pCancelButton(NULL),
	m_SuppressAutoConfigWarning(false),
	m_BonjourInstall(NULL),
	m_SuppressEmptyServerWarning(false)
{
	setupUi(this);

	createMenuBar();
	loadSettings();
	initConnections();

	m_pWidgetUpdate->hide();
	m_VersionChecker.setApp(appPath(appConfig.synergycName()));
	m_pLabelScreenName->setText(getScreenName());
	m_pLabelIpAddresses->setText(getIPAddresses());

#if defined(Q_OS_WIN)
	// ipc must always be enabled, so that we can disable command when switching to desktop mode.
	connect(&m_IpcClient, SIGNAL(readLogLine(const QString&)), this, SLOT(appendLogRaw(const QString&)));
	connect(&m_IpcClient, SIGNAL(errorMessage(const QString&)), this, SLOT(appendLogError(const QString&)));
	connect(&m_IpcClient, SIGNAL(infoMessage(const QString&)), this, SLOT(appendLogNote(const QString&)));
	m_IpcClient.connectToHost();
#endif

	// change default size based on os
#if defined(Q_OS_MAC)
	resize(720, 550);
	setMinimumSize(size());
#elif defined(Q_OS_LINUX)
	resize(700, 530);
	setMinimumSize(size());
#endif

	m_SuppressAutoConfigWarning = true;
	m_pCheckBoxAutoConfig->setChecked(appConfig.autoConfig());
	m_SuppressAutoConfigWarning = false;

	m_pComboServerList->hide();

	updateEdition();

	m_pLabelPadlock->hide();

	updateLocalFingerprint();
}

MainWindow::~MainWindow()
{
	if (appConfig().processMode() == Desktop) {
		stopDesktop();
	}

	saveSettings();

	delete m_pZeroconfService;

	if (m_DownloadMessageBox != NULL) {
		delete m_DownloadMessageBox;
	}

	if (m_BonjourInstall != NULL) {
		delete m_BonjourInstall;
	}
}

void MainWindow::open()
{
	createTrayIcon();

	if (!autoHide()) {
		showNormal();
	}

	m_VersionChecker.checkLatest();

	if (!appConfig().autoConfigPrompted()) {
		promptAutoConfig();
	}

	// only start if user has previously started. this stops the gui from
	// auto hiding before the user has configured synergy (which of course
	// confuses first time users, who think synergy has crashed).
	if (appConfig().startedBefore() && appConfig().processMode() == Desktop) {
		m_SuppressEmptyServerWarning = true;
		startSynergy();
		m_SuppressEmptyServerWarning = false;
	}
}

void MainWindow::onModeChanged(bool startDesktop, bool applyService)
{
	if (appConfig().processMode() == Service)
	{
		// ensure that the apply button actually does something, since desktop
		// mode screws around with connecting/disconnecting the action.
		disconnect(m_pButtonToggleStart, SIGNAL(clicked()), m_pActionStartSynergy, SLOT(trigger()));
		connect(m_pButtonToggleStart, SIGNAL(clicked()), m_pActionStartSynergy, SLOT(trigger()));

		if (applyService)
		{
			stopDesktop();
			startSynergy();
		}
	}
	else if ((appConfig().processMode() == Desktop) && startDesktop)
	{
		stopService();
		startSynergy();
	}
}

void MainWindow::setStatus(const QString &status)
{
	m_pStatusLabel->setText(status);
}

void MainWindow::createTrayIcon()
{
	m_pTrayIconMenu = new QMenu(this);

	m_pTrayIconMenu->addAction(m_pActionStartSynergy);
	m_pTrayIconMenu->addAction(m_pActionStopSynergy);
	m_pTrayIconMenu->addSeparator();

	m_pTrayIconMenu->addAction(m_pActionMinimize);
	m_pTrayIconMenu->addAction(m_pActionRestore);
	m_pTrayIconMenu->addSeparator();
	m_pTrayIconMenu->addAction(m_pActionQuit);

	m_pTrayIcon = new QSystemTrayIcon(this);
	m_pTrayIcon->setContextMenu(m_pTrayIconMenu);

	connect(m_pTrayIcon, SIGNAL(activated(QSystemTrayIcon::ActivationReason)),
			this, SLOT(trayActivated(QSystemTrayIcon::ActivationReason)));

	setIcon(synergyDisconnected);

	m_pTrayIcon->show();
}

void MainWindow::retranslateMenuBar()
{
	m_pMenuFile->setTitle(tr("&File"));
	m_pMenuEdit->setTitle(tr("&Edit"));
	m_pMenuWindow->setTitle(tr("&Window"));
	m_pMenuHelp->setTitle(tr("&Help"));
}

void MainWindow::createMenuBar()
{
	m_pMenuBar = new QMenuBar(this);
	m_pMenuFile = new QMenu("", m_pMenuBar);
	m_pMenuEdit = new QMenu("", m_pMenuBar);
	m_pMenuWindow = new QMenu("", m_pMenuBar);
	m_pMenuHelp = new QMenu("", m_pMenuBar);
	retranslateMenuBar();

	m_pMenuBar->addAction(m_pMenuFile->menuAction());
	m_pMenuBar->addAction(m_pMenuEdit->menuAction());
#if !defined(Q_OS_MAC)
	m_pMenuBar->addAction(m_pMenuWindow->menuAction());
#endif
	m_pMenuBar->addAction(m_pMenuHelp->menuAction());

	m_pMenuFile->addAction(m_pActionStartSynergy);
	m_pMenuFile->addAction(m_pActionStopSynergy);
	m_pMenuFile->addSeparator();
	m_pMenuFile->addAction(m_pActionWizard);
	m_pMenuFile->addAction(m_pActionSave);
	m_pMenuFile->addSeparator();
	m_pMenuFile->addAction(m_pActionQuit);
	m_pMenuEdit->addAction(m_pActionSettings);
	m_pMenuWindow->addAction(m_pActionMinimize);
	m_pMenuWindow->addAction(m_pActionRestore);
	m_pMenuHelp->addAction(m_pActionAbout);

	setMenuBar(m_pMenuBar);
}

void MainWindow::loadSettings()
{
	// the next two must come BEFORE loading groupServerChecked and groupClientChecked or
	// disabling and/or enabling the right widgets won't automatically work
	m_pRadioExternalConfig->setChecked(settings().value("useExternalConfig", false).toBool());
	m_pRadioInternalConfig->setChecked(settings().value("useInternalConfig", true).toBool());

	m_pGroupServer->setChecked(settings().value("groupServerChecked", false).toBool());
	m_pLineEditConfigFile->setText(settings().value("configFile", QDir::homePath() + "/" + synergyConfigName).toString());
	m_pGroupClient->setChecked(settings().value("groupClientChecked", true).toBool());
	m_pLineEditHostname->setText(settings().value("serverHostname").toString());
}

void MainWindow::initConnections()
{
	connect(m_pActionMinimize, SIGNAL(triggered()), this, SLOT(hide()));
	connect(m_pActionRestore, SIGNAL(triggered()), this, SLOT(showNormal()));
	connect(m_pActionStartSynergy, SIGNAL(triggered()), this, SLOT(startSynergy()));
	connect(m_pActionStopSynergy, SIGNAL(triggered()), this, SLOT(stopSynergy()));
	connect(m_pActionQuit, SIGNAL(triggered()), qApp, SLOT(quit()));
	connect(&m_VersionChecker, SIGNAL(updateFound(const QString&)), this, SLOT(updateFound(const QString&)));
}

void MainWindow::saveSettings()
{
	// program settings
	settings().setValue("groupServerChecked", m_pGroupServer->isChecked());
	settings().setValue("useExternalConfig", m_pRadioExternalConfig->isChecked());
	settings().setValue("configFile", m_pLineEditConfigFile->text());
	settings().setValue("useInternalConfig", m_pRadioInternalConfig->isChecked());
	settings().setValue("groupClientChecked", m_pGroupClient->isChecked());
	settings().setValue("serverHostname", m_pLineEditHostname->text());

	settings().sync();
}

void MainWindow::setIcon(qSynergyState state)
{
	QIcon icon;
	icon.addFile(synergyIconFiles[state]);

	if (m_pTrayIcon)
		m_pTrayIcon->setIcon(icon);
}

void MainWindow::trayActivated(QSystemTrayIcon::ActivationReason reason)
{
#ifndef Q_OS_WIN
	if (reason == QSystemTrayIcon::DoubleClick)
	{
		if (isVisible())
		{
			hide();
		}
		else
		{
			showNormal();
			activateWindow();
		}
	}
#endif
}

void MainWindow::logOutput()
{
	if (m_pSynergy)
	{
		QString text(m_pSynergy->readAllStandardOutput());
		foreach(QString line, text.split(QRegExp("\r|\n|\r\n")))
		{
			if (!line.isEmpty())
			{
				appendLogRaw(line);				
			}
		}
	}
}

void MainWindow::logError()
{
	if (m_pSynergy)
	{
		appendLogRaw(m_pSynergy->readAllStandardError());
	}
}

void MainWindow::updateFound(const QString &version)
{
	m_pWidgetUpdate->show();
	m_pLabelUpdate->setText(
		tr("<p>Your version of Synergy is out of date. "
		   "Version <b>%1</b> is now available to "
		   "<a href=\"%2\">download</a>.</p>")
		.arg(version).arg(DOWNLOAD_URL));
}

void MainWindow::appendLogNote(const QString& text)
{
	appendLogRaw("NOTE: " + text);
}

void MainWindow::appendLogDebug(const QString& text) {
	if (appConfig().logLevel() >= 4) {
		appendLogRaw("DEBUG: " + text);
	}
}

void MainWindow::appendLogError(const QString& text)
{
	appendLogRaw("ERROR: " + text);
}

void MainWindow::appendLogRaw(const QString& text)
{
	foreach(QString line, text.split(QRegExp("\r|\n|\r\n"))) {
		if (!line.isEmpty()) {
			m_pLogOutput->append(line);
			updateStateFromLogLine(line);
		}
	}
}

void MainWindow::updateStateFromLogLine(const QString &line)
{
	checkConnected(line);
	checkFingerprint(line);
	checkTransmission(line);
}

void MainWindow::checkConnected(const QString& line)
{
	// TODO: implement ipc connection state messages to replace this hack.
	if (line.contains("started server") ||
		line.contains("connected to server") ||
		line.contains("watchdog status: ok"))
	{
		setSynergyState(synergyConnected);

		if (!appConfig().startedBefore()) {
				QMessageBox::information(
					this, "Synergy",
					tr("Synergy is now connected, You can close the "
					"config window. Synergy will remain connected in "
					"the background."));

			appConfig().setStartedBefore(true);
			appConfig().saveSettings();
		}
	}
}

void MainWindow::checkFingerprint(const QString& line)
{
	QRegExp fingerprintRegex(".*server fingerprint: ([A-F0-9:]+)");
	if (!fingerprintRegex.exactMatch(line)) {
		return;
	}

	QString fingerprint = fingerprintRegex.cap(1);
	if (Fingerprint::trustedServers().isTrusted(fingerprint)) {
		return;
	}

	QMessageBox::StandardButton fingerprintReply =
		QMessageBox::information(
		this, tr("Security question"),
		tr("Do you trust this fingerprint?\n\n"
		   "%1\n\n"
		   "This is a server fingerprint. You should compare this "
		   "fingerprint to the one on your server's screen. If the "
		   "two don't match exactly, then it's probably not the server "
		   "you're expecting (it could be a malicious user).\n\n"
		   "To automatically trust this fingerprint for future "
		   "connections, click Yes. To reject this fingerprint and "
		   "disconnect from the server, click No.")
		.arg(fingerprint),
		QMessageBox::Yes | QMessageBox::No);

	if (fingerprintReply == QMessageBox::Yes) {
		// restart core process after trusting fingerprint.
		Fingerprint::trustedServers().trust(fingerprint);
		startSynergy();
	}
	else {
		// on all platforms, the core process will stop if the
		// fingerprint is not trusted, so technically the stop
		// isn't really needed. however on windows, the core
		// process will keep trying (and failing) unless we
		// tell it to stop.
		stopSynergy();
	}
}

void MainWindow::checkTransmission(const QString& line)
{
	if (line.contains("File Transmission")) {
		if (line.contains("Started")) {
			setSynergyState(synergyTransfering);
		}
		else if (line.contains("Failed") ||
				 line.contains("Complete")) {
			setSynergyState(synergyConnected);
		}

		// NOTIFY: Title: Detail
		int p1 = line.indexOf(':');
		if (p1 > 0) {
			int p2 = line.indexOf(':', p1 + 1);
			if (p2 > 0) {
				m_pTrayIcon->showMessage(line.mid(p1 + 2, p2 - p1 - 2), line.mid(p2 + 2));
			}
		}
	}
}

bool MainWindow::autoHide()
{
	if ((appConfig().processMode() == Desktop) &&
		appConfig().getAutoHide()) {
		hide();
		return true;
	}

	return false;
}

void MainWindow::clearLog()
{
	m_pLogOutput->clear();
}

void MainWindow::startSynergy()
{
	m_pTrayIcon->showMessage("test", "transfering clipboard data!!",QSystemTrayIcon::Warning,2);
	bool desktopMode = appConfig().processMode() == Desktop;
	bool serviceMode = appConfig().processMode() == Service;

	if (desktopMode)
	{
		stopSynergy();
	}

	setSynergyState(synergyConnecting);

	QString app;
	QStringList args;

	args << "-f" << "--no-tray" << "--debug" << appConfig().logLevelText();


	args << "--name" << getScreenName();

	if (desktopMode)
	{
		setSynergyProcess(new QProcess(this));
	}
	else
	{
		// tell client/server to talk to daemon through ipc.
		args << "--ipc";

#if defined(Q_OS_WIN)
		// tell the client/server to shut down when a ms windows desk
		// is switched; this is because we may need to elevate or not
		// based on which desk the user is in (login always needs
		// elevation, where as default desk does not).
		args << "--stop-on-desk-switch";
#endif
	}

#ifndef Q_OS_LINUX

	args << "--enable-drag-drop";

#endif

	if (m_AppConfig.getCryptoEnabled()) {
		args << "--enable-crypto";
	}

#if defined(Q_OS_WIN)
	// on windows, the profile directory changes depending on the user that
	// launched the process (e.g. when launched with elevation). setting the
	// profile dir on launch ensures it uses the same profile dir is used
	// no matter how its relaunched.
	args << "--profile-dir" << getProfileRootForArg();
#endif

	if ((synergyType() == synergyClient && !clientArgs(args, app))
		|| (synergyType() == synergyServer && !serverArgs(args, app)))
	{
		if (desktopMode)
		{
			stopSynergy();
			return;
		}
	}

	if (desktopMode)
	{
		connect(synergyProcess(), SIGNAL(finished(int, QProcess::ExitStatus)), this, SLOT(synergyFinished(int, QProcess::ExitStatus)));
		connect(synergyProcess(), SIGNAL(readyReadStandardOutput()), this, SLOT(logOutput()));
		connect(synergyProcess(), SIGNAL(readyReadStandardError()), this, SLOT(logError()));
	}

	// put a space between last log output and new instance.
	if (!m_pLogOutput->toPlainText().isEmpty())
		appendLogRaw("");

	appendLogNote("starting " + QString(synergyType() == synergyServer ? "server" : "client"));

	qDebug() << args;

	// show command if debug log level...
	if (appConfig().logLevel() >= 4) {
		appendLogNote(QString("command: %1 %2").arg(app, args.join(" ")));
	}

	appendLogNote("config file: " + configFilename());
	appendLogNote("log level: " + appConfig().logLevelText());

	if (appConfig().logToFile())
		appendLogNote("log file: " + appConfig().logFilename());

	if (desktopMode)
	{
		synergyProcess()->start(app, args);
		if (!synergyProcess()->waitForStarted())
		{
			stopSynergy();
			show();
			QMessageBox::warning(this, tr("Program can not be started"), QString(tr("The executable<br><br>%1<br><br>could not be successfully started, although it does exist. Please check if you have sufficient permissions to run this program.").arg(app)));
			return;
		}
	}

	if (serviceMode)
	{
		QString command(app + " " + args.join(" "));
		m_IpcClient.sendCommand(command, appConfig().elevateMode());
	}
}

bool MainWindow::clientArgs(QStringList& args, QString& app)
{
	app = appPath(appConfig().synergycName());

	if (!QFile::exists(app))
	{
		show();
		QMessageBox::warning(this, tr("Synergy client not found"),
							 tr("The executable for the synergy client does not exist."));
		return false;
	}

#if defined(Q_OS_WIN)
	// wrap in quotes so a malicious user can't start \Program.exe as admin.
	app = QString("\"%1\"").arg(app);
#endif

	if (appConfig().logToFile())
	{
		appConfig().persistLogDir();
		args << "--log" << appConfig().logFilenameCmd();
	}

	// check auto config first, if it is disabled or no server detected,
	// use line edit host name if it is not empty
	if (m_pCheckBoxAutoConfig->isChecked()) {
		if (m_pComboServerList->count() != 0) {
			QString serverIp = m_pComboServerList->currentText();
			args << serverIp + ":" + QString::number(appConfig().port());
			return true;
		}
	}

	if (m_pLineEditHostname->text().isEmpty()) {
		show();
		if (!m_SuppressEmptyServerWarning) {
			QMessageBox::warning(this, tr("Hostname is empty"),
							 tr("Please fill in a hostname for the synergy client to connect to."));
		}
		return false;
	}

	args << m_pLineEditHostname->text() + ":" + QString::number(appConfig().port());

	return true;
}

QString MainWindow::configFilename()
{
	QString filename;
	if (m_pRadioInternalConfig->isChecked())
	{
		// TODO: no need to use a temporary file, since we need it to
		// be permenant (since it'll be used for Windows services, etc).
		m_pTempConfigFile = new QTemporaryFile();
		if (!m_pTempConfigFile->open())
		{
			QMessageBox::critical(this, tr("Cannot write configuration file"), tr("The temporary configuration file required to start synergy can not be written."));
			return "";
		}

		serverConfig().save(*m_pTempConfigFile);
		filename = m_pTempConfigFile->fileName();

		m_pTempConfigFile->close();
	}
	else
	{
		if (!QFile::exists(m_pLineEditConfigFile->text()))
		{
			if (QMessageBox::warning(this, tr("Configuration filename invalid"),
				tr("You have not filled in a valid configuration file for the synergy server. "
						"Do you want to browse for the configuration file now?"), QMessageBox::Yes | QMessageBox::No) != QMessageBox::Yes
					|| !on_m_pButtonBrowseConfigFile_clicked())
				return "";
		}

		filename = m_pLineEditConfigFile->text();
	}
	return filename;
}

QString MainWindow::address()
{
	QString i = appConfig().interface();
	return (!i.isEmpty() ? i : "") + ":" + QString::number(appConfig().port());
}

QString MainWindow::appPath(const QString& name)
{
	return appConfig().synergyProgramDir() + name;
}

bool MainWindow::serverArgs(QStringList& args, QString& app)
{
	app = appPath(appConfig().synergysName());

	if (!QFile::exists(app))
	{
		QMessageBox::warning(this, tr("Synergy server not found"),
							 tr("The executable for the synergy server does not exist."));
		return false;
	}

#if defined(Q_OS_WIN)
	// wrap in quotes so a malicious user can't start \Program.exe as admin.
	app = QString("\"%1\"").arg(app);
#endif

	if (appConfig().logToFile())
	{
		appConfig().persistLogDir();

		args << "--log" << appConfig().logFilenameCmd();
	}

	QString configFilename = this->configFilename();
#if defined(Q_OS_WIN)
	// wrap in quotes in case username contains spaces.
	configFilename = QString("\"%1\"").arg(configFilename);
#endif
	args << "-c" << configFilename << "--address" << address();

	return true;
}

void MainWindow::stopSynergy()
{
	if (appConfig().processMode() == Service)
	{
		stopService();
	}
	else if (appConfig().processMode() == Desktop)
	{
		stopDesktop();
	}

	setSynergyState(synergyDisconnected);

	// HACK: deleting the object deletes the physical file, which is
	// bad, since it could be in use by the Windows service!
	//delete m_pTempConfigFile;
	m_pTempConfigFile = NULL;

	// reset so that new connects cause auto-hide.
	m_AlreadyHidden = false;
}

void MainWindow::stopService()
{
	// send empty command to stop service from laucning anything.
	m_IpcClient.sendCommand("", appConfig().elevateMode());
}

void MainWindow::stopDesktop()
{
	if (!synergyProcess()) {
		return;
	}

	appendLogNote("stopping synergy desktop process");

	if (synergyProcess()->isOpen())
		synergyProcess()->close();

	delete synergyProcess();
	setSynergyProcess(NULL);
}

void MainWindow::synergyFinished(int exitCode, QProcess::ExitStatus)
{
	// on Windows, we always seem to have an exit code != 0.
#if !defined(Q_OS_WIN)
	if (exitCode != 0)
	{
		QMessageBox::critical(this, tr("Synergy terminated with an error"), QString(tr("Synergy terminated unexpectedly with an exit code of %1.<br><br>Please see the log output for details.")).arg(exitCode));
		stopSynergy();
	}
#else
	Q_UNUSED(exitCode);
#endif

	setSynergyState(synergyDisconnected);
}

void MainWindow::setSynergyState(qSynergyState state)
{
	if (synergyState() == state)
		return;

	if (state == synergyConnected || state == synergyConnecting)
	{
		disconnect (m_pButtonToggleStart, SIGNAL(clicked()), m_pActionStartSynergy, SLOT(trigger()));
		connect (m_pButtonToggleStart, SIGNAL(clicked()), m_pActionStopSynergy, SLOT(trigger()));
		m_pButtonToggleStart->setText(tr("&Stop"));
		m_pButtonApply->setEnabled(true);
	}
	else
	{
		disconnect (m_pButtonToggleStart, SIGNAL(clicked()), m_pActionStopSynergy, SLOT(trigger()));
		connect (m_pButtonToggleStart, SIGNAL(clicked()), m_pActionStartSynergy, SLOT(trigger()));
		m_pButtonToggleStart->setText(tr("&Start"));
		m_pButtonApply->setEnabled(false);
	}

	bool connected = state == synergyConnected;

	m_pActionStartSynergy->setEnabled(!connected);
	m_pActionStopSynergy->setEnabled(connected);

	switch (state)
	{
	case synergyConnected: {
		if (m_AppConfig.getCryptoEnabled()) {
			m_pLabelPadlock->show();
		}
		else {
			m_pLabelPadlock->hide();
		}

		setStatus(tr("Synergy is running."));

		break;
	}
	case synergyConnecting:
		m_pLabelPadlock->hide();
		setStatus(tr("Synergy is starting."));
		break;
	case synergyDisconnected:
		m_pLabelPadlock->hide();
		setStatus(tr("Synergy is not running."));
		break;
	case synergyTransfering:
		break;
	}

	setIcon(state);

	m_SynergyState = state;
}

void MainWindow::setVisible(bool visible)
{
	QMainWindow::setVisible(visible);
	m_pActionMinimize->setEnabled(visible);
	m_pActionRestore->setEnabled(!visible);

#if __MAC_OS_X_VERSION_MIN_REQUIRED >= 1070 // lion
	// dock hide only supported on lion :(
	ProcessSerialNumber psn = { 0, kCurrentProcess };
	GetCurrentProcess(&psn);
	if (visible)
		TransformProcessType(&psn, kProcessTransformToForegroundApplication);
	else
		TransformProcessType(&psn, kProcessTransformToBackgroundApplication);
#endif
}

QString MainWindow::getIPAddresses()
{
	QList<QHostAddress> addresses = QNetworkInterface::allAddresses();

	bool hinted = false;
	QString result;
	for (int i = 0; i < addresses.size(); i++) {
		if (addresses[i].protocol() == QAbstractSocket::IPv4Protocol &&
			addresses[i] != QHostAddress(QHostAddress::LocalHost)) {

			QString address = addresses[i].toString();
			QString format = "%1, ";

			// usually 192.168.x.x is a useful ip for the user, so indicate
			// this by making it bold.
			if (!hinted && address.startsWith("192.168")) {
				hinted = true;
				format = "<b>%1</b>, ";
			}

			result += format.arg(address);
		}
	}

	if (result == "") {
		return tr("Unknown");
	}

	// remove trailing comma.
	result.chop(2);

	return result;
}

QString MainWindow::getScreenName()
{
	if (appConfig().screenName() == "") {
		return QHostInfo::localHostName();
	}
	else {
		return appConfig().screenName();
	}
}

void MainWindow::changeEvent(QEvent* event)
{
	if (event != 0)
	{
		switch (event->type())
		{
		case QEvent::LanguageChange:
		{
			retranslateUi(this);
			retranslateMenuBar();

			updateEdition();

			break;
		}
		default:
			QMainWindow::changeEvent(event);
		}
	}
}

void MainWindow::updateZeroconfService()
{
	QMutexLocker locker(&m_Mutex);

	if (isBonjourRunning()) {
		if (!m_AppConfig.wizardShouldRun()) {
			if (m_pZeroconfService) {
				delete m_pZeroconfService;
				m_pZeroconfService = NULL;
			}

			if (m_AppConfig.autoConfig() || synergyType() == synergyServer) {
				m_pZeroconfService = new ZeroconfService(this);
			}
		}
	}
}

void MainWindow::serverDetected(const QString name)
{
	if (m_pComboServerList->findText(name) == -1) {
		// Note: the first added item triggers startSynergy
		m_pComboServerList->addItem(name);
	}

	if (m_pComboServerList->count() > 1) {
		m_pComboServerList->show();
	}
}

void MainWindow::setEdition(int type)
{
	QString title;
	if (type == Basic) {
		title = "Synergy Basic";
	}
	else if (type == Pro) {
		title = "Synergy Pro";
	}
	else {
		title = "Synergy (UNREGISTERED)";
	}

	setWindowTitle(title);
}

void MainWindow::updateLocalFingerprint()
{
	if (Fingerprint::local().fileExists()) {
		m_pLabelFingerprint->setVisible(true);
		m_pLabelLocalFingerprint->setVisible(true);
		m_pLabelLocalFingerprint->setText(Fingerprint::local().readFirst());
	}
	else {
		m_pLabelFingerprint->setVisible(false);
		m_pLabelLocalFingerprint->setVisible(false);
	}
}

void MainWindow::on_m_pGroupClient_toggled(bool on)
{
	m_pGroupServer->setChecked(!on);
	if (on) {
		updateZeroconfService();
	}
}

void MainWindow::on_m_pGroupServer_toggled(bool on)
{
	m_pGroupClient->setChecked(!on);
	if (on) {
		updateZeroconfService();
	}
}

bool MainWindow::on_m_pButtonBrowseConfigFile_clicked()
{
	QString fileName = QFileDialog::getOpenFileName(this, tr("Browse for a synergys config file"), QString(), synergyConfigFilter);

	if (!fileName.isEmpty())
	{
		m_pLineEditConfigFile->setText(fileName);
		return true;
	}

	return false;
}

bool  MainWindow::on_m_pActionSave_triggered()
{
	QString fileName = QFileDialog::getSaveFileName(this, tr("Save configuration as..."));

	if (!fileName.isEmpty() && !serverConfig().save(fileName))
	{
		QMessageBox::warning(this, tr("Save failed"), tr("Could not save configuration to file."));
		return true;
	}

	return false;
}

void MainWindow::on_m_pActionAbout_triggered()
{
	AboutDialog dlg(this, appPath(appConfig().synergycName()));
	dlg.exec();
}

void MainWindow::on_m_pActionSettings_triggered()
{
	ProcessMode lastProcessMode = appConfig().processMode();

	SettingsDialog dlg(this, appConfig());
	dlg.exec();

	if (lastProcessMode != appConfig().processMode())
	{
		onModeChanged(true, true);
	}
}

void MainWindow::autoAddScreen(const QString name)
{
	if (!m_ServerConfig.ignoreAutoConfigClient()) {
		int r = m_ServerConfig.autoAddScreen(name);
		if (r != kAutoAddScreenOk) {
			switch (r) {
			case kAutoAddScreenManualServer:
				showConfigureServer(
					tr("Please add the server (%1) to the grid.")
						.arg(appConfig().screenName()));
				break;

			case kAutoAddScreenManualClient:
				showConfigureServer(
					tr("Please drag the new client screen (%1) "
						"to the desired position on the grid.")
						.arg(name));
				break;
			}
		}
		else {
			startSynergy();
		}
	}
}

void MainWindow::showConfigureServer(const QString& message)
{
	ServerConfigDialog dlg(this, serverConfig(), appConfig().screenName());
	dlg.message(message);
	dlg.exec();
}

void MainWindow::on_m_pButtonConfigureServer_clicked()
{
	showConfigureServer();
}

void MainWindow::on_m_pActionWizard_triggered()
{
	SetupWizard wizard(*this, false);
	wizard.exec();
}

void MainWindow::on_m_pButtonApply_clicked()
{
	startSynergy();
}

#if defined(Q_OS_WIN)
bool MainWindow::isServiceRunning(QString name)
{
	SC_HANDLE hSCManager;
	hSCManager = OpenSCManager(NULL, NULL, SC_MANAGER_CONNECT);
	if (hSCManager == NULL) {
		appendLogNote("failed to open a service controller manager, error: " +
			GetLastError());
		return false;
	}

	SC_HANDLE hService;
	int length = name.length();
	wchar_t* array = new wchar_t[length + 1];
	name.toWCharArray(array);
	array[length] = '\0';

	hService = OpenService(hSCManager, array, SERVICE_QUERY_STATUS);

	delete[] array;

	if (hService == NULL) {
		appendLogDebug("failed to open service: " + name);
		return false;
	}

	SERVICE_STATUS status;
	if (QueryServiceStatus(hService, &status)) {
		if (status.dwCurrentState == SERVICE_RUNNING) {
			return true;
		}
	}
#else
bool MainWindow::isServiceRunning()
{
#endif
	return false;
}

bool MainWindow::isBonjourRunning()
{
	bool result = false;

#if defined(Q_OS_WIN)
	result = isServiceRunning("Bonjour Service");
#else
	result = true;
#endif

	return result;
}

void MainWindow::downloadBonjour()
{
#if defined(Q_OS_WIN)
	QUrl url;
	int arch = getProcessorArch();
	if (arch == kProcessorArchWin32) {
		url.setUrl(bonjourBaseUrl + bonjourFilename32);
		appendLogNote("downloading 32-bit Bonjour");
	}
	else if (arch == kProcessorArchWin64) {
		url.setUrl(bonjourBaseUrl + bonjourFilename64);
		appendLogNote("downloading 64-bit Bonjour");
	}
	else {
		QMessageBox::critical(
			this, tr("Synergy"),
			tr("Failed to detect system architecture."));
		return;
	}

	if (m_pDataDownloader == NULL) {
		m_pDataDownloader = new DataDownloader(this);
		connect(m_pDataDownloader, SIGNAL(isComplete()), SLOT(installBonjour()));
	}

	m_pDataDownloader->download(url);

	if (m_DownloadMessageBox == NULL) {
		m_DownloadMessageBox = new QMessageBox(this);
		m_DownloadMessageBox->setWindowTitle("Synergy");
		m_DownloadMessageBox->setIcon(QMessageBox::Information);
		m_DownloadMessageBox->setText("Installing Bonjour, please wait...");
		m_DownloadMessageBox->setStandardButtons(0);
		m_pCancelButton = m_DownloadMessageBox->addButton(
			tr("Cancel"), QMessageBox::RejectRole);
	}

	m_DownloadMessageBox->exec();

	if (m_DownloadMessageBox->clickedButton() == m_pCancelButton) {
		m_pDataDownloader->cancel();
	}
#endif
}

void MainWindow::installBonjour()
{
#if defined(Q_OS_WIN)
	QString tempLocation = QDesktopServices::storageLocation(
								QDesktopServices::TempLocation);
	QString filename = tempLocation;
	filename.append("\\").append(bonjourTargetFilename);
	QFile file(filename);
	if (!file.open(QIODevice::WriteOnly)) {
		m_DownloadMessageBox->hide();

		QMessageBox::warning(
			this, "Synergy",
			tr("Failed to download Bonjour installer to location: %1")
			.arg(tempLocation));
		return;
	}

	file.write(m_pDataDownloader->data());
	file.close();

	QStringList arguments;
	arguments.append("/i");
	QString winFilename = QDir::toNativeSeparators(filename);
	arguments.append(winFilename);
	arguments.append("/passive");
	if (m_BonjourInstall == NULL) {
		m_BonjourInstall = new CommandProcess("msiexec", arguments);
	}

	QThread* thread = new QThread;
	connect(m_BonjourInstall, SIGNAL(finished()), this,
		SLOT(bonjourInstallFinished()));
	connect(m_BonjourInstall, SIGNAL(finished()), thread, SLOT(quit()));
	connect(thread, SIGNAL(finished()), thread, SLOT(deleteLater()));

	m_BonjourInstall->moveToThread(thread);
	thread->start();

	QMetaObject::invokeMethod(m_BonjourInstall, "run", Qt::QueuedConnection);

	m_DownloadMessageBox->hide();
#endif
}

void MainWindow::promptAutoConfig()
{
	if (!isBonjourRunning()) {
		int r = QMessageBox::question(
			this, tr("Synergy"),
			tr("Do you want to enable auto config and install Bonjour?\n\n"
			   "This feature helps you establish the connection."),
			QMessageBox::Yes | QMessageBox::No);

		if (r == QMessageBox::Yes) {
			m_AppConfig.setAutoConfig(true);
			downloadBonjour();
		}
		else {
			m_AppConfig.setAutoConfig(false);
			m_pCheckBoxAutoConfig->setChecked(false);
		}
	}

	m_AppConfig.setAutoConfigPrompted(true);
}

void MainWindow::updateEdition()
{
	QString mac = getFirstMacAddress();
	QString hashSrc = m_AppConfig.activateEmail() + mac;
	QString hashResult = hash(hashSrc);

	if (hashResult == m_AppConfig.userToken()) {
		setEdition(m_AppConfig.edition());
	}
	else {
		setEdition(Unknown);
	}
}

void MainWindow::on_m_pComboServerList_currentIndexChanged(QString )
{
	if (m_pComboServerList->count() != 0) {
		startSynergy();
	}
}

void MainWindow::on_m_pCheckBoxAutoConfig_toggled(bool checked)
{
	if (!isBonjourRunning() && checked) {
		if (!m_SuppressAutoConfigWarning) {
			int r = QMessageBox::information(
				this, tr("Synergy"),
				tr("Auto config feature requires Bonjour.\n\n"
				   "Do you want to install Bonjour?"),
				QMessageBox::Yes | QMessageBox::No);

			if (r == QMessageBox::Yes) {
				downloadBonjour();
			}
		}

		m_pCheckBoxAutoConfig->setChecked(false);
		return;
	}

	m_pLineEditHostname->setDisabled(checked);
	appConfig().setAutoConfig(checked);
	updateZeroconfService();

	if (!checked) {
		m_pComboServerList->clear();
		m_pComboServerList->hide();
	}
}

void MainWindow::bonjourInstallFinished()
{
	appendLogNote("Bonjour install finished");

	m_pCheckBoxAutoConfig->setChecked(true);
}

QString MainWindow::getProfileRootForArg()
{
	CoreInterface coreInterface;
	QString dir = coreInterface.getProfileDir();

	// HACK: strip our app name since we're returning the root dir.
#if defined(Q_OS_WIN)
	dir.replace("\\Synergy", "");
#else
	dir.replace("/.synergy", "");
#endif

	return QString("\"%1\"").arg(dir);
}