Initial commit

23 files changed, 2278 insertions, 0 deletions

diff --git a/src/server/clicklabel/clicklabel.cpp b/src/server/clicklabel/clicklabel.cpp
new file mode 100644
index 0000000..2989542
--- /dev/null
+++ b/src/server/clicklabel/clicklabel.cpp
@@ -0,0 +1,14 @@
+#include "clicklabel.h"
+
+ClickLabel::ClickLabel(QWidget *parent) : QLabel(parent)
+{
+	QFont f(this->font());
+	f.setPixelSize(20);
+	this->setFont(f);
+	this->setMaximumHeight(22);
+}
+
+void ClickLabel::mouseReleaseEvent(QMouseEvent* e)
+{
+	emit clicked();
+}
diff --git a/src/server/clicklabel/clicklabel.h b/src/server/clicklabel/clicklabel.h
new file mode 100644
index 0000000..6a05152
--- /dev/null
+++ b/src/server/clicklabel/clicklabel.h
@@ -0,0 +1,25 @@
+#ifndef _CLICKLABEL_H_
+#define _CLICKLABEL_H_
+
+#include <QtGui>
+#include <QLabel>
+
+
+class ClickLabel : public QLabel
+{
+    Q_OBJECT
+
+public:
+    ClickLabel(QWidget *parent);
+
+protected:
+    void mouseReleaseEvent(QMouseEvent* e);
+
+
+signals:
+	void clicked();
+
+};
+
+
+#endif
diff --git a/src/server/connectionframe/connectionframe.cpp b/src/server/connectionframe/connectionframe.cpp
new file mode 100644
index 0000000..1544c76
--- /dev/null
+++ b/src/server/connectionframe/connectionframe.cpp
@@ -0,0 +1,278 @@
+/*
+# Copyright (c) 2009 - OpenSLX Project, Computer Center University of Freiburg
+#
+# This program is free software distributed under the GPL version 2.
+# See http://openslx.org/COPYING
+#
+# If you have any feedback please consult http://openslx.org/feedback and
+# send your suggestions, praise, or complaints to feedback@openslx.org
+#
+# General information about OpenSLX can be found at http://openslx.org/
+# -----------------------------------------------------------------------------
+# src/gui/connectionFrame.cpp
+# -----------------------------------------------------------------------------
+*/
+
+
+#include "connectionframe.h"
+#include "../net/client.h"
+#include <QPixmap>
+#include <QImage>
+#include <cassert>
+
+static QIcon *term = NULL, *cam = NULL, *eye = NULL;
+
+static QString backgroundStyle("background-color: %1; margin: 1px; border: 1px solid black; border-radius: 6px");
+
+ConnectionFrame::ConnectionFrame(QWidget *parent, int width, int height) :
+        QGroupBox(parent), _client(NULL), _timerId(0), _timerCounter(0), _selected(false), _isTutor(false)
+{
+
+	//defines the ui-stuff
+	// load icons first
+	if (term == NULL)
+	{
+		term = new QIcon(":terminal");
+		cam = new QIcon(":cam32");
+		eye = new QIcon(":eye");
+	}
+
+	//this->setAttribute(Qt::WA_OpaquePaintEvent);
+
+	 _mainLayout = new QBoxLayout(QBoxLayout::TopToBottom, this);
+	 _mainLayout->setSpacing(1);
+	 _mainLayout->setMargin(3);
+	 _mainLayout->setAlignment(Qt::AlignHCenter);
+
+	 _iconLayout = new QBoxLayout(QBoxLayout::RightToLeft, NULL);
+	 _iconLayout->setSpacing(1);
+	 _iconLayout->setMargin(3);
+
+	 _lblUserName = new QLabel("Test", this);
+	 _lblUserName->setStyleSheet(QString::fromUtf8("background-color: white; color: black;"));
+	 _lblUserName->setAlignment(Qt::AlignHCenter);
+	 //_lblUsername->resize(_lblUsername->width(), _lblUsername->font().pixelSize());
+
+	 _lblHostName = new QLabel("PC", this);
+	 _lblHostName->setStyleSheet(QString::fromUtf8("background-color: white; color: black;"));
+	 _lblHostName->setAlignment(Qt::AlignHCenter);
+
+	 _icoCam = addIcon(cam);
+	 _icoEye = addIcon(eye);
+
+	 _iconLayout->addWidget(_icoCam);
+	 _iconLayout->addWidget(_icoEye);
+	 _iconLayout->addStretch();
+
+	 //_layout->addWidget(_imgScreen);
+	 _mainLayout->addLayout(_iconLayout);
+	 _mainLayout->addStretch();
+	 _mainLayout->addWidget(_lblUserName);
+	 _mainLayout->addWidget(_lblHostName);
+	 this->setLayout(_mainLayout);
+	 this->setSize(width, height);
+	 this->updateColor();
+}
+
+ConnectionFrame::~ConnectionFrame()
+{
+	//
+}
+
+QLabel* ConnectionFrame::addIcon(const QIcon* icon)
+{
+	 QLabel *label = new QLabel(this);
+	 label->setPixmap(icon->pixmap(24, 24, QIcon::Normal, QIcon::On));
+	 label->setAttribute(Qt::WA_TranslucentBackground);
+	 label->hide();
+	 _icons.append(label);
+	 return label;
+}
+
+void ConnectionFrame::setSize(int width, int height)
+{
+	this->resize(width, height);
+}
+
+void ConnectionFrame::assignClient(Client* client)
+{
+	assert(_client == NULL);
+	connect(client, SIGNAL(destroyed(QObject*)), this, SLOT(onClientDisconnected(QObject*)));
+	connect(client, SIGNAL(thumbUpdated(Client*, const QPixmap&)), this, SLOT(onThumbUpdated(Client*, const QPixmap&)));
+	connect(client, SIGNAL(vncServerStateChange(Client*)), this, SLOT(onVncServerStateChange(Client*)));
+	connect(client, SIGNAL(vncClientStateChange(Client*)), this, SLOT(onVncClientStateChange(Client*)));
+	_client = client;
+	_computerId = client->computerId();
+	_lblHostName->setText(client->ip());
+	_lblHostName->setToolTip(client->host());
+	_lblUserName->setText(client->name());
+	showDefaultThumb();
+	if (_timerId == 0)
+		_timerId = startTimer(1000 + qrand() % 150);
+	this->updateColor();
+}
+
+void ConnectionFrame::showDefaultThumb()
+{
+	const int width = this->width() - 6;
+	const int height = this->height() - 8 - _lblHostName->height() - _lblUserName->height();
+	_remoteScreen = term->pixmap(width, height, QIcon::Normal, QIcon::On);
+	this->repaint();
+	//_imgScreen->setPixmap(_remoteScreen);
+}
+
+void ConnectionFrame::mouseReleaseEvent(QMouseEvent* event)
+{
+	event->accept();
+	if (event->button() == Qt::LeftButton)
+	{
+	   QApplication::setOverrideCursor(QCursor(Qt::OpenHandCursor));
+	   if (this->pos() != _previousPosition) {
+	   	qDebug("Moved");
+	   	emit frameMoved(this);
+	   }
+	   else
+	   {
+	   	qDebug("Clicked");
+	   	emit clicked(this);
+	   }
+	}
+}
+
+void ConnectionFrame::enterEvent(QEvent* event)
+{
+	QApplication::setOverrideCursor(QCursor(Qt::OpenHandCursor));
+	event->accept();
+}
+
+void ConnectionFrame::leaveEvent(QEvent* event)
+{
+	QApplication::setOverrideCursor(QCursor(Qt::ArrowCursor));
+	event->accept();
+}
+
+void ConnectionFrame::mousePressEvent(QMouseEvent *event)
+{
+	if (event->button() == Qt::RightButton)
+	{
+		// Menu...
+	}
+	else
+	{
+	    _clickPoint = event->pos();
+	    _previousPosition  = this->pos();
+	    QApplication::setOverrideCursor(QCursor(Qt::ClosedHandCursor));
+	}
+	// On click, the window has to be on the top-level.
+	activateWindow();
+	raise();
+	update();
+	event->accept();
+}
+
+void ConnectionFrame::mouseMoveEvent(QMouseEvent *event)
+{
+	QApplication::setOverrideCursor(QCursor(Qt::ClosedHandCursor));
+	move(mapToParent(event->pos()-_clickPoint));
+	event->accept();
+}
+
+void ConnectionFrame::mouseDoubleClickEvent(QMouseEvent* event)
+{
+	emit doubleClicked(this);
+	event->accept();
+}
+
+void ConnectionFrame::paintEvent(QPaintEvent *event)
+{
+	QGroupBox::paintEvent(event);
+	if (_remoteScreen.isNull())
+		return;
+	QPainter painter(this);
+	painter.drawPixmap((this->width() - _remoteScreen.width()) / 2, 4, _remoteScreen);
+	event->accept();
+}
+
+void ConnectionFrame::timerEvent(QTimerEvent* event)
+{
+	if (_client == NULL)
+		return;
+	++_timerCounter;
+	if (_client->isActiveVncServer() && _timerCounter % 5 != 0)
+		return;
+	const int width = this->width() - 8;
+	const int height = this->height() - 9 - _lblHostName->height() - _lblUserName->height();
+	_client->requestThumb(width, height);
+}
+
+void ConnectionFrame::setSelection(bool selected)
+{
+	if (_selected == selected)
+		return;
+	_selected = selected;
+	this->updateColor();
+}
+
+void ConnectionFrame::updateColor()
+{
+	if (_client == NULL)
+	{
+		// Unconnected Frame
+		if (_selected)
+			this->setStyleSheet(backgroundStyle.arg("rgb(140, 140, 170)"));
+		else
+			this->setStyleSheet(backgroundStyle.arg("rgb(140, 140, 140)"));
+		for (QList<QLabel*>::iterator it(_icons.begin()); it != _icons.end(); ++it)
+			(**it).hide();
+		return;
+	}
+	_icoCam->setVisible(_client->isActiveVncServer());
+	_icoEye->setVisible(_client->isActiveVncClient());
+
+	// Normal client, no special stuff active
+
+	if (_selected && _isTutor)
+		this->setStyleSheet(backgroundStyle.arg("rgb(255, 220, 180)"));
+	else if (_isTutor)
+		this->setStyleSheet(backgroundStyle.arg("rgb(255, 180, 180)"));
+	else if (_selected)
+		this->setStyleSheet(backgroundStyle.arg("rgb(180, 180, 210)"));
+	else
+		this->setStyleSheet(backgroundStyle.arg("rgb(180, 180, 180)"));
+}
+
+/**
+ * Slots
+ */
+
+void ConnectionFrame::onClientDisconnected(QObject* client)
+{
+	assert(client == _client);
+	if (_timerId != 0)
+	{
+		killTimer(_timerId);
+		_timerId = 0;
+	}
+	_client = NULL;
+	_lblUserName->setText(QString());
+	showDefaultThumb();
+	this->updateColor();
+}
+
+void ConnectionFrame::onThumbUpdated(Client* client, const QPixmap& thumb)
+{
+	assert(client == _client);
+	_remoteScreen = thumb;
+	//_imgScreen->setPixmap(_remoteScreen);
+	this->repaint();
+}
+
+void ConnectionFrame::onVncServerStateChange(Client* client)
+{
+	this->updateColor();
+}
+
+void ConnectionFrame::onVncClientStateChange(Client* client)
+{
+	this->updateColor();
+}
diff --git a/src/server/connectionframe/connectionframe.h b/src/server/connectionframe/connectionframe.h
new file mode 100644
index 0000000..2b78056
--- /dev/null
+++ b/src/server/connectionframe/connectionframe.h
@@ -0,0 +1,77 @@
+#ifndef _CONNECTIONFRAME_H_
+#define _CONNECTIONFRAME_H_
+#include <QtGui>
+
+class Client;
+
+class ConnectionFrame : public QGroupBox
+{
+
+Q_OBJECT
+
+private:
+
+	QString _computerId;
+
+	QBoxLayout *_mainLayout;
+	QBoxLayout *_iconLayout;
+	QLabel *_lblUserName;
+	QLabel *_lblHostName;
+
+	QLabel *_icoCam, *_icoEye;
+	QList<QLabel*> _icons;
+
+	QPixmap _remoteScreen;
+
+	QPoint _clickPoint;
+	QPoint _previousPosition;
+
+	Client *_client;
+
+	int _timerId, _timerCounter;
+	bool _selected;
+	bool _isTutor;
+
+	void showDefaultThumb();
+	void updateColor();
+	QLabel* addIcon(const QIcon* icon);
+
+public:
+	ConnectionFrame(QWidget* parent, int width, int height);
+	virtual ~ConnectionFrame();
+
+	const QPixmap& getFramePixmap() const { return _remoteScreen; }
+	void setSize(int width, int height);
+	void assignClient(Client *client);
+	void setSelection(bool selected);
+	const inline bool selected() const { return _selected; }
+
+	const QString& computerId() const { return _computerId; }
+	Client* client() const { return _client; }
+
+	inline const bool isTutor() const { return _isTutor; }
+	inline void setTutor(bool b) { _isTutor = b; }
+
+protected:
+	void mouseDoubleClickEvent(QMouseEvent* event);
+	void mouseReleaseEvent(QMouseEvent* e);
+	void enterEvent(QEvent* event);
+	void leaveEvent(QEvent* event);
+	void mousePressEvent(QMouseEvent* event);
+	void mouseMoveEvent(QMouseEvent* event);
+	void paintEvent(QPaintEvent *event);
+	void timerEvent(QTimerEvent* event);
+
+signals:
+	void frameMoved(ConnectionFrame* frame);
+	void doubleClicked(ConnectionFrame* frame);
+	void clicked(ConnectionFrame* frame);
+
+private slots:
+	void onClientDisconnected(QObject* client);
+	void onThumbUpdated(Client* client, const QPixmap& thumb);
+	void onVncServerStateChange(Client* client);
+	void onVncClientStateChange(Client* client);
+};
+
+#endif
diff --git a/src/server/main.cpp b/src/server/main.cpp
new file mode 100644
index 0000000..e7c709a
--- /dev/null
+++ b/src/server/main.cpp
@@ -0,0 +1,41 @@
+#include "mainwindow/mainwindow.h"
+#include "util/util.h"
+
+int main(int argc, char** argv)
+{
+   QApplication app(argc, argv);
+   app.setOrganizationName("openslx");
+   app.setOrganizationDomain("openslx.org");
+   app.setApplicationName("pvsmgr");
+
+   qsrand((uint)QDateTime::currentMSecsSinceEpoch());
+
+   // Make sure settings directory exists
+   do {
+		USER_SETTINGS(settings);
+		QFileInfo fi(settings.fileName());
+		QDir path(fi.path());
+		qDebug() << "Settings directory is " << fi.path();
+		if (!path.exists())
+			path.mkpath(path.absolutePath());
+		// Now check if settings file exists. If not, copy system default (if available)
+		if (!fi.exists())
+		{
+			SYSTEM_SETTINGS(sys);
+			QFileInfo sysfi(sys.fileName());
+			if (sysfi.exists())
+			{
+				if (!QFile::copy(sys.fileName(), settings.fileName()))
+					qDebug() << "Copying default settings from " << sys.fileName() << " to " << settings.fileName() << " failed.";
+			}
+		}
+   } while (0);
+
+   // use system locale as language to translate gui
+   QTranslator translator;
+   translator.load(":pvsmgr");
+   app.installTranslator(&translator);
+
+   MainWindow pvsmgr;
+   return app.exec();
+}
diff --git a/src/server/mainwindow/mainwindow.cpp b/src/server/mainwindow/mainwindow.cpp
new file mode 100644
index 0000000..8c57b91
--- /dev/null
+++ b/src/server/mainwindow/mainwindow.cpp
@@ -0,0 +1,633 @@
+/*
+ # Copyright (c) 2009 - OpenSLX Project, Computer Center University of Freiburg
+ #
+ # This program is free software distributed under the GPL version 2.
+ # See http://openslx.org/COPYING
+ #
+ # If you have any feedback please consult http://openslx.org/feedback and
+ # send your suggestions, praise, or complaints to feedback@openslx.org
+ #
+ # General information about OpenSLX can be found at http://openslx.org/
+ # -----------------------------------------------------------------------------
+ # mainWindow.cpp
+ This is the Main class for the pvsManager. The GUI is constructed here.
+ # -----------------------------------------------------------------------------
+ */
+// Self
+#include "mainwindow.h"
+// QT stuff
+#include <QtGui>
+#include <QFileDialog>
+// Other custom UI elements
+#include "../clicklabel/clicklabel.h"
+#include "../sessionnamewindow/sessionnamewindow.h"
+#include "../connectionframe/connectionframe.h"
+// Network
+#include "../net/listenserver.h"
+#include "../net/client.h"
+#include "../net/discoverylistener.h"
+#include "../../shared/networkmessage.h"
+// Others
+#include "../../shared/settings.h"
+#include "../util/util.h"
+#include "../util/global.h"
+// Auto-generated ui class
+#include "ui_mainwindow.h"
+
+MainWindow::MainWindow(QWidget* parent) :
+	QMainWindow(parent), ui(new Ui::MainWindow), _tbIconSize(24), _tbArea(Qt::LeftToolBarArea),
+	_buttonBlockTime(0)
+
+{
+	_sessionNameWindow = new SessionNameWindow(this);
+	ui->setupUi(this);
+
+	Global::setSessionName("1234");
+
+	//conWin = new ConnectionWindow(ui->widget);
+	//ui->VconWinLayout->addWidget(conWin);
+	//conList = new ConnectionList(ui->ClWidget);
+	//ui->ClientGLayout->addWidget(conList);
+
+	// Show only session name label, not textbox
+	_sessionNameLabel = new ClickLabel(this);
+	ui->mainLayout->addWidget(_sessionNameLabel);
+
+	ui->frmRoom->setStyleSheet("background-color:#444");
+
+	// toolbar and actions in pvsmgr
+	ui->action_Exit->setStatusTip(tr("Exit"));
+	ui->action_Lock->setStatusTip(tr("Lock or Unlock all Clients"));
+
+	// Close button in tool bar
+	connect(ui->action_Exit, SIGNAL(triggered()), this, SLOT(onButtonExit()));
+	connect(ui->action_BroadcastScreen, SIGNAL(triggered()), this, SLOT(onButtonBroadcast()));
+	connect(ui->action_Lock, SIGNAL(toggled(bool)), this, SLOT(onButtonLock(bool)));
+	// Clicking the session name label shows the edit field for it
+	connect(_sessionNameLabel, SIGNAL(clicked()), this, SLOT(onSessionNameClick()));
+	// Listen to updates to the session name through the session name window
+	connect(_sessionNameWindow, SIGNAL(updateSessionName()), this,
+	   SLOT(onSessionNameUpdate()));
+
+	setAttribute(Qt::WA_QuitOnClose);
+	setUnifiedTitleAndToolBarOnMac(true);
+	this->showMaximized(); // show the Mainwindow maximized
+
+	_tilesX = 9;
+	_tilesY = 7;
+	_tileWidth = 10;
+	_tileHeight = 10;
+
+	_timerId = 0;
+	_timerTimeout = 0;
+
+	_listenServer = new ListenServer(CLIENT_PORT);
+	connect(_listenServer, SIGNAL(newClient(Client*)), this, SLOT(onClientConnected(Client*)));
+	_discoveryListener = new DiscoveryListener();
+
+	// Finally
+	this->onSessionNameUpdate();
+	_timerId = startTimer(10);
+	_timerTimeout = 8;
+}
+
+MainWindow::~MainWindow()
+{
+	_sessionNameLabel->deleteLater();
+	delete ui;
+}
+
+void MainWindow::placeFrameInFreeSlot(ConnectionFrame* frame)
+{
+	// Get occupied cell of each frame and store status in an array
+	const int elems = _tilesX * _tilesY;
+	int currentIndex = 0;
+	bool grid[elems];
+	memset(grid, 0, sizeof(bool) * elems); // set everything to false
+	for (QList<ConnectionFrame*>::iterator it(_clientFrames.begin()); it != _clientFrames.end(); ++it)
+	{
+		const QPoint &oldpos = (*it)->frameGeometry().topLeft();
+		const int tx = oldpos.x() / _tileWidth;
+		const int ty = oldpos.y() / _tileHeight;
+		const int index = tx + ty * _tilesX;
+		if (frame == *it)
+		{
+			// Current frame is the frame to place, remember its old index
+			currentIndex = index;
+			continue;
+		}
+		if (index < 0 || index >= elems)
+		{
+			// Current frame is out of bounds, place in top left corner
+			qDebug("Move A");
+			(*it)->move(0, 0);
+			grid[0] = true;
+			continue;
+		}
+		// Just mark cell as occupied in array
+		grid[index] = true;
+	}
+	// Safety
+	if (currentIndex < 0 || currentIndex >= elems)
+		currentIndex = 0;
+	// Now place in next free cell, start looking at current position of frame
+	for (int i = 0; i < elems; ++i)
+	{
+		const int index = (i + currentIndex) % elems;
+		if (grid[index])
+			continue;
+		const int x = (index % _tilesX) * _tileWidth;
+		const int y = (index / _tilesX) * _tileHeight;
+		//qDebug() << "Index=" << index << " i=" << i << " cI=" << currentIndex << " elems=" << elems << " x=" << x << " y=" << y;
+		qDebug("Move B");
+		frame->move(x, y);
+		break;
+	}
+}
+
+ConnectionFrame* MainWindow::createFrame()
+{
+	// Allocate and resize
+	ConnectionFrame *cf = new ConnectionFrame(ui->frmRoom, _tileWidth, _tileHeight);
+	_clientFrames.append(cf);
+	cf->show();
+	connect(cf, SIGNAL(frameMoved(ConnectionFrame *)), this, SLOT(onPlaceFrame(ConnectionFrame *)));
+	connect(cf, SIGNAL(clicked(ConnectionFrame *)), this, SLOT(onFrameClicked(ConnectionFrame *)));
+	return cf;
+}
+
+bool MainWindow::loadPosition(QSettings& settings, const QString& id, int& x, int& y)
+{
+	settings.beginGroup("client_position");
+	const QVariant retval(settings.value(id));
+	settings.endGroup();
+	if (retval.type() != QVariant::Point)
+		return false;
+	const QPoint point(retval.toPoint());
+	x = point.x();
+	y = point.y();
+	return true;
+}
+
+void MainWindow::savePosition(ConnectionFrame *cf)
+{
+	Client *client = cf->client();
+	if (client == NULL)
+		return;
+	QPoint pos(cf->pos().x() / _tileWidth, cf->pos().y() / _tileHeight);
+	USER_SETTINGS(settings);
+	settings.beginGroup("client_position");
+	settings.setValue(client->computerId(), pos);
+	settings.endGroup();
+}
+
+/*
+ * Overridden methods
+ */
+
+void MainWindow::closeEvent(QCloseEvent* e)
+{
+	int ret = QMessageBox::question(this, "Test", "Beenden?", 0, 1, 2);
+	if (ret == 1)
+		QApplication::exit(0);
+	else
+		e->ignore();
+}
+
+void MainWindow::changeEvent(QEvent* e)
+{
+	QMainWindow::changeEvent(e);
+}
+
+void MainWindow::resizeEvent(QResizeEvent* e)
+{
+	QMainWindow::resizeEvent(e);
+	if (_timerId == 0)
+	{
+		_timerId = startTimer(5);
+	}
+	_timerTimeout = 8;
+}
+
+void MainWindow::mouseReleaseEvent(QMouseEvent* e)
+{
+	// Try to figure out if the user clicked inside the "room" frame
+	// No idea if there is a more elegant way to do this without
+	// sub-classing that frame and overriding its mouseReleaseEvent
+	const QPoint pos(ui->frmRoom->mapFrom(this, e->pos()));
+	if (pos.x() < 0 || pos.y() < 0)
+		return;
+	const QSize frame(ui->frmRoom->size());
+	if (frame.width() > pos.x() && frame.height() > pos.y())
+	{
+		for (QList<ConnectionFrame*>::iterator it = _clientFrames.begin(); it != _clientFrames.end(); ++it)
+		{
+			(**it).setSelection(false);
+		}
+	}
+}
+
+void MainWindow::timerEvent(QTimerEvent* event)
+{
+	if (event->timerId() == _timerId)
+	{
+		_timerTimeout -= 1;
+		if (_timerTimeout == 1)
+		{
+			// Move toolbar if necessary
+			const int iconSize = this->size().width() / 30 + 14;
+			const int barSpace = ui->toolBar->actions().size() * (iconSize + 8);
+			const Qt::ToolBarArea area =
+				(barSpace < this->size().height() ? Qt::LeftToolBarArea : Qt::TopToolBarArea);
+			if (_tbIconSize != iconSize)
+			{
+				_tbIconSize = iconSize;
+				ui->toolBar->setIconSize(QSize(iconSize, iconSize));
+			}
+			if (_tbArea != area)
+			{
+				_tbArea = area;
+				this->addToolBar(area, ui->toolBar);
+			}
+			return;
+		}
+		// Kill timer when done
+		if (_timerTimeout <= 0)
+		{
+			killTimer(_timerId);
+			_timerId = 0;
+			// Resize all connection windows
+			if (ui->frmRoom->size().width() < 100 || ui->frmRoom->size().height() < 100 || _tilesX <= 0 || _tilesY <= 0)
+				return;
+			const int nw = ui->frmRoom->size().width() / _tilesX;
+			const int nh = ui->frmRoom->size().height() / _tilesY;
+			for (QList<ConnectionFrame*>::iterator it = _clientFrames.begin(); it != _clientFrames.end(); ++it)
+			{
+				const QPoint &oldpos = (*it)->frameGeometry().topLeft();
+				qDebug("Move C");
+				(*it)->move((oldpos.x() / _tileWidth) * nw, (oldpos.y() / _tileHeight) * nh);
+				(*it)->setSize(nw, nh);
+			}
+			_tileWidth = nw;
+			_tileHeight = nh;
+		}
+	}
+	else
+	{
+		// Unknown timer ID, kill
+		killTimer(event->timerId());
+	}
+}
+
+/*
+ * Slots
+ */
+
+void MainWindow::onPlaceFrame(ConnectionFrame* frame)
+{
+	if (_tilesX <= 0 || _tilesY <= 0)
+		return;
+	const QPoint &p = frame->frameGeometry().center();
+	const QSize &s = ui->frmRoom->geometry().size();
+	int x = (p.x() / _tileWidth) * _tileWidth;
+	int y = (p.y() / _tileHeight) * _tileHeight;
+	if (x < 0)
+		x = 0;
+	else if (x > s.width() - _tileWidth)
+		x = (_tilesX - 1) * _tileWidth;
+	if (y < 0)
+		y = 0;
+	else if (y > s.height() - _tileHeight)
+		y = (_tilesY - 1) * _tileHeight;
+	qDebug("Move D");
+	frame->move(x, y);
+	savePosition(frame);
+	const QPoint &newpos = frame->frameGeometry().topLeft();
+	for (QList<ConnectionFrame*>::iterator it(_clientFrames.begin()); it != _clientFrames.end(); ++it)
+	{
+		if (*it == frame)
+			continue;
+		if ((*it)->frameGeometry().topLeft() == newpos)
+		{
+			placeFrameInFreeSlot(*it);
+		}
+	}
+}
+
+void MainWindow::onFrameClicked(ConnectionFrame* frame)
+{
+	for (QList<ConnectionFrame*>::iterator it(_clientFrames.begin()); it != _clientFrames.end(); ++it)
+	{
+		if (*it == frame)
+			frame->setSelection(true);
+		else
+			(**it).setSelection(false);
+	}
+}
+
+void MainWindow::onSessionNameClick()
+{
+	_sessionNameWindow->show(Global::sessionName());
+}
+
+void MainWindow::onSessionNameUpdate()
+{
+	_sessionNameLabel->setText(tr("Session Name: %1  [click to edit]").arg(Global::sessionName()));
+}
+
+void MainWindow::onButtonSettings()
+{
+	// Move to any free tile
+	placeFrameInFreeSlot(createFrame());
+}
+
+void MainWindow::onButtonChat()
+{
+	/*
+	 for (QList<ConnectionFrame*>::iterator it = _clientFrames.begin(); it != _clientFrames.end(); ++it) {
+	 (*it)->setSize(100 + qrand() % 200);
+	 }
+	 */
+}
+
+void MainWindow::onButtonBroadcast()
+{
+	const qint64 now = QDateTime::currentMSecsSinceEpoch();
+	if (now < _buttonBlockTime)
+		return;
+	_buttonBlockTime = now + 3000;
+	Client *source = NULL; // the desired source (selected frame)
+	Client *oldSource = NULL; // if there is a client that is already broadcaster, save it here
+	for (QList<ConnectionFrame*>::iterator it(_clientFrames.begin()); it != _clientFrames.end(); ++it)
+	{
+		Client *c = (**it).client();
+		if ((**it).selected())
+			source = c;
+		if (c != NULL && c->isProjectionSource())
+			oldSource = c;
+	}
+	if (source == NULL && oldSource == NULL)
+	{
+		QMessageBox::information(this, tr("No Projection Source selected"), tr("You did not select any active client as the connection source."));
+		return;
+	}
+	if (oldSource != NULL)
+	{
+		// Is already broadcast source, disable
+		oldSource->setProjectionSource(false);
+		oldSource->stopVncServer();
+		if (source == NULL || source->id() == oldSource->id())
+			return;
+	}
+	source->setProjectionSource(true);
+	for (QList<ConnectionFrame*>::iterator it(_clientFrames.begin()); it != _clientFrames.end(); ++it)
+	{
+		Client *c = (**it).client();
+		if (c == NULL || c->id() == source->id())
+			continue;
+		//c->setDesiredProjectionSource(source->id());
+		c->setProjectionSource(false);
+	}
+	source->startVncServer();
+}
+
+void MainWindow::onButtonLock(bool checked)
+{
+	NetworkMessage msg;
+	msg.setField(_ID, _LOCK);
+	if (checked)
+		msg.setField("ENABLE", QByteArray("1"));
+	else
+		msg.setField("ENABLE", QByteArray("0"));
+	for (QList<ConnectionFrame*>::iterator it(_clientFrames.begin()); it != _clientFrames.end(); ++it)
+	{
+		Client *c = (**it).client();
+		if (c == NULL || (**it).isTutor())
+			continue; // Don't lock the tutor
+		c->sendMessage(msg);
+	}
+}
+
+void MainWindow::onButtonExit()
+{
+	this->close();
+}
+
+void MainWindow::onClientConnected(Client* client)
+{
+	qDebug("ListenServer told MainWindow about new connection");
+	connect(client, SIGNAL(authenticating(Client*, ClientLogin*)), this, SLOT(onClientAuthenticating(Client*, ClientLogin*)));
+	connect(client, SIGNAL(authenticated(Client*)), this, SLOT(onClientAuthenticated(Client*)));
+	connect(client, SIGNAL(vncClientStateChange(Client*)), this, SLOT(onVncClientStateChange(Client*)));
+}
+
+void MainWindow::onClientAuthenticating(Client* client, ClientLogin* request)
+{
+	disconnect(client, SIGNAL(authenticating(Client*, ClientLogin*)), this, SLOT(onClientAuthenticating(Client*, ClientLogin*)));
+	if (!request->accept) // Another receiver of that signal already rejected the client, so nothing to do
+		return;
+	bool inuse;
+	QString check = request->name;
+	int addnum = 1;
+	do
+	{
+		inuse = false;
+		for (QList<ConnectionFrame*>::iterator it(_clientFrames.begin()); it != _clientFrames.end(); ++it)
+		{
+			Client *c = (**it).client();
+			if (c == NULL)
+				continue;
+			if (!c->isAuthed())
+				continue;
+			if (c->ip() == request->ip)
+			{
+				request->accept = false;
+				return;
+			}
+			if (c->name() == check)
+			{
+				inuse = true;
+				check = request->name + " (" + QString::number(++addnum) + ")";
+				break;
+			}
+		}
+	} while (inuse && addnum < 100);
+	if (inuse)
+		request->accept = false;
+	else
+		request->name = check;
+}
+
+void MainWindow::onClientAuthenticated(Client* client)
+{
+	disconnect(client, SIGNAL(authenticated(Client*)), this, SLOT(onClientAuthenticated(Client*)));
+	connect(client, SIGNAL(vncServerStateChange(Client*)), this, SLOT(onVncServerStateChange(Client*)));
+	bool hasActiveTutor = false;
+	ConnectionFrame *deadTutor = NULL;
+	bool anyClient = false;
+	ConnectionFrame *existing = NULL;
+	for (QList<ConnectionFrame*>::iterator it(_clientFrames.begin()); it != _clientFrames.end(); ++it)
+	{
+		if ((*it)->computerId() == client->computerId())
+			existing = *it;
+		if ((*it)->client() != NULL)
+			anyClient = true;
+		if ((*it)->isTutor())
+		{
+			if ((*it)->client() == NULL)
+				deadTutor = (*it)->client();
+			else
+				hasActiveTutor = true;
+		}
+	}
+	if (!anyClient && deadTutor != NULL)
+		deadTutor->setTutor(false);
+	if (existing != NULL)
+	{
+		if (!anyClient && !hasActiveTutor)
+			existing->setTutor(true);
+		existing->assignClient(client);
+		return;
+	}
+	// New one, create
+	ConnectionFrame *cf = createFrame();
+	// Try to load last known position
+	int x, y;
+	bool ok;
+	USER_SETTINGS(usr);
+	ok = loadPosition(usr, client->computerId(), x, y);
+	if (!ok)
+	{
+		SYSTEM_SETTINGS(sys);
+		ok = loadPosition(sys, client->computerId(), x, y);
+	}
+	if (x >= _tilesX || y >= _tilesY)
+		ok = false;
+	if (ok)
+	{
+		if (x < 0)
+			x = 0;
+		if (y < 0)
+			y = 0;
+		qDebug("Move E");
+		cf->move(x * _tileWidth, y * _tileHeight);
+		onPlaceFrame(cf);
+	}
+	else
+	{
+		// Move to any free tile
+		placeFrameInFreeSlot(cf);
+	}
+	// Assign client instance
+	cf->assignClient(client);
+	// Make first active client tutor
+	if (!anyClient && !hasActiveTutor)
+		cf->setTutor(true);
+	// ################
+	NetworkMessage msg;
+	// If clients are currently locked, tell this new client
+	if (ui->action_Lock->isChecked())
+	{
+		msg.reset();
+		msg.setField(_ID, _LOCK);
+		msg.setField("ENABLE", QByteArray("1"));
+		client->sendMessage(msg);
+	}
+	// Same for VNC projections
+	for (QList<ConnectionFrame*>::iterator it(_clientFrames.begin()); it != _clientFrames.end(); ++it)
+	{
+		Client *c = (**it).client();
+		if (c != NULL && c != client && c->isActiveVncServer() && c->isProjectionSource())
+		{
+			msg.reset();
+			msg.setField(_ID, _VNCCLIENT);
+			msg.setField("HOST", c->ip());
+			msg.setField("PORT", QString::number(c->vncPort()));
+			msg.setField("ROPASS", c->vncRoPass());
+			msg.setField("CAPTION", c->name() + " @ " + c->host());
+			client->sendMessage(msg);
+			break;
+		}
+	}
+}
+
+void MainWindow::onVncServerStateChange(Client* client)
+{
+	if (client->vncPort() > 0)
+	{
+		// VNC Server started on some client - start projection on all clients interested in that client's screen
+		NetworkMessage msg;
+		msg.setField(_ID, _VNCCLIENT);
+		msg.setField("HOST", client->ip());
+		msg.setField("PORT", QString::number(client->vncPort()));
+		msg.setField("ROPASS", client->vncRoPass());
+		msg.setField("CAPTION", client->name() + " @ " + client->host());
+		for (QList<ConnectionFrame*>::iterator it(_clientFrames.begin()); it != _clientFrames.end(); ++it)
+		{
+			Client *c = (**it).client();
+			if (c == NULL)
+				continue; // Offline
+			if (c->id() == client->id() ||
+				(c->desiredProjectionSource() != client->id() && !client->isProjectionSource()))
+				continue; // Not interested
+			c->sendMessage(msg);
+		}
+	}
+	else
+	{
+		// VNC server stopped on some client or failed to start - reset local pending projection information
+		// If at least one other client seemed to be waiting for this client's screen, pop up a message
+		// on the console
+		bool wasInterested = client->isProjectionSource();
+		client->setProjectionSource(true);
+		for (QList<ConnectionFrame*>::iterator it(_clientFrames.begin()); it != _clientFrames.end(); ++it)
+		{
+			Client *c = (**it).client();
+			if (c == NULL)
+				continue;
+			if (c->desiredProjectionSource() == client->id())
+			{
+				wasInterested = true;
+				c->setDesiredProjectionSource(0);
+			}
+		}
+		if (wasInterested)
+		{
+			QMessageBox::information(this,
+				tr("Projection Error"),
+				tr("Could not send screen contents of %1 to other clients: VNC Startup failed.").arg(client->name())
+			);
+		}
+	}
+}
+
+void MainWindow::onVncClientStateChange(Client* client)
+{
+	// If the client started projection, ignore event. Also if
+	// the source is not known (anymore), we cannot do anything meaningful here
+	if (client->isActiveVncClient() || client->currentProjectionSource() == 0)
+		return;
+	// Client is not a vnc client anymore. Check if the VNC server it was (supposedly) connected
+	// to is still running, and kill it if there are no more clients connected to it.
+	// (client->currentProjectionSource() will still contain the id of the server it was connected to during this event)
+	// 1. check if vnc server is still running
+	// 2. check if there are any other clients "using" that server
+	bool inUse = false;
+	Client *server = NULL;
+	for (QList<ConnectionFrame*>::iterator it(_clientFrames.begin()); it != _clientFrames.end(); ++it)
+	{
+		Client *c = (**it).client();
+		if (c == NULL || c == client)
+			continue;
+		if (c->currentProjectionSource() == client->currentProjectionSource())
+		{
+			inUse = true;
+			break;
+		}
+		if (c->id() == client->currentProjectionSource())
+			server = c;
+	}
+	// 3. kill server if applicable
+	if (!inUse && server != NULL)
+		server->stopVncServer();
+}
diff --git a/src/server/mainwindow/mainwindow.h b/src/server/mainwindow/mainwindow.h
new file mode 100644
index 0000000..4f9d142
--- /dev/null
+++ b/src/server/mainwindow/mainwindow.h
@@ -0,0 +1,76 @@
+#ifndef _MAINWINDOW_H_
+#define _MAINWINDOW_H_
+
+#include <QtGui>
+#include <QMainWindow>
+
+class SessionNameWindow;
+class ConnectionFrame;
+class ListenServer;
+class DiscoveryListener;
+class Client;
+class ClientLogin;
+
+namespace Ui
+{
+	class MainWindow;
+}
+
+class MainWindow : public QMainWindow
+{
+    Q_OBJECT
+
+private:
+    Ui::MainWindow *ui;
+    SessionNameWindow *_sessionNameWindow;
+    QLabel *_sessionNameLabel;
+    QList<ConnectionFrame*> _clientFrames;
+    int _tileWidth, _tileHeight;
+    int _tilesX, _tilesY;
+    int _tbIconSize;
+    Qt::ToolBarArea _tbArea;
+    int _timerId, _timerTimeout;
+    ListenServer *_listenServer;
+    DiscoveryListener *_discoveryListener;
+    qint64 _buttonBlockTime;
+
+    void placeFrameInFreeSlot(ConnectionFrame* frame);
+    ConnectionFrame* createFrame();
+    bool loadPosition(QSettings& settings, const QString& id, int& x, int& y);
+    void savePosition(ConnectionFrame *cf);
+
+public:
+    MainWindow(QWidget *parent = 0);
+    ~MainWindow();
+
+protected:
+    void closeEvent(QCloseEvent *e);
+    void changeEvent(QEvent *e);
+    void resizeEvent(QResizeEvent *e);
+    void mouseReleaseEvent(QMouseEvent* e);
+    void timerEvent(QTimerEvent* event);
+
+
+protected slots:
+	// This
+	void onSessionNameClick();
+	void onSessionNameUpdate();
+	void onButtonSettings();
+	void onButtonChat();
+	void onButtonBroadcast();
+	void onButtonLock(bool checked);
+	void onButtonExit();
+	// connection frame
+	void onPlaceFrame(ConnectionFrame* frame);
+	void onFrameClicked(ConnectionFrame* frame);
+	// Net
+	void onClientConnected(Client* client);
+	void onClientAuthenticating(Client* client, ClientLogin* request);
+	void onClientAuthenticated(Client* client);
+	void onVncServerStateChange(Client* client);
+	void onVncClientStateChange(Client* client);
+
+};
+
+
+#endif
diff --git a/src/server/net/certmanager.cpp b/src/server/net/certmanager.cpp
new file mode 100644
index 0000000..e661a70
--- /dev/null
+++ b/src/server/net/certmanager.cpp
@@ -0,0 +1,92 @@
+/*

+ # Copyright (c) 2009 - OpenSLX Project, Computer Center University of Freiburg

+ #

+ # This program is free software distributed under the GPL version 2.

+ # See http://openslx.org/COPYING

+ #

+ # If you have any feedback please consult http://openslx.org/feedback and

+ # send your suggestions, praise, or complaints to feedback@openslx.org

+ #

+ # General information about OpenSLX can be found at http://openslx.org/

+ # -----------------------------------------------------------------------------

+ # src/util/CertManager.cpp

+ #    - Manage SSL certificates

+ #    - provide access by name

+ # -----------------------------------------------------------------------------

+ */

+

+#include "certmanager.h"

+#include "../util/util.h"

+#include <QMap>

+#include <QFileInfo>

+#include <QSettings>

+#include <cstdlib>

+

+namespace CertManager

+{

+static QMap<QString, QSslCertificate> _certs;

+static QMap<QString, QSslKey> _keys;

+

+static void generateFiles(QString& key, QString& cert);

+static bool loadFiles(QString& keyFile, QString& certFile, QSslKey &key, QSslCertificate &cert);

+

+bool getPrivateKeyAndCert(const QString &name, QSslKey &key, QSslCertificate &cert)

+{

+	if (_keys.contains(name))

+	{

+		key = _keys[name];

+		cert = _certs[name];

+		return true;

+	}

+	USER_SETTINGS(settings);

+	QString certFile = settings.fileName().append(".").append(name);

+	QString keyFile = certFile;

+	keyFile.append(".rsa");

+	certFile.append(".crt");

+	//

+	if (!loadFiles(keyFile, certFile, key, cert))

+	{

+		generateFiles(keyFile, certFile);

+		if (!loadFiles(keyFile, certFile, key, cert))

+			return false;

+	}

+	_certs.insert(name, cert);

+	_keys.insert(name, key);

+	return true;

+}

+

+static bool loadFiles(QString& keyFile, QString& certFile, QSslKey &key, QSslCertificate &cert)

+{

+	QFileInfo keyInfo(keyFile);

+	QFileInfo certInfo(certFile);

+	if (keyInfo.exists() && certInfo.exists())

+	{   // Both files exist, see if they're valid and return

+		QFile kf(keyFile);

+		kf.open(QFile::ReadOnly);

+		key = QSslKey(&kf, QSsl::Rsa, QSsl::Pem, QSsl::PrivateKey);

+		QList<QSslCertificate> certlist = QSslCertificate::fromPath(certFile);

+		if (!key.isNull() && !certlist.empty())

+		{

+			cert = certlist.first();

+			if (!cert.isNull())

+			{

+				return true;

+			}

+		}

+	}

+	return false;

+}

+

+static void generateFiles(QString& key, QString& cert)

+{

+	char tmp[1000];

+	unlink(key.toLocal8Bit().data());

+	unlink(cert.toLocal8Bit().data());

+	snprintf(tmp, 1000,

+	   "openssl req -x509 -nodes -days 3650 -newkey rsa:1024 -subj '/C=DE/ST=BaWue/L=Freiburg/CN=openslx.org' -keyout \"%s\" -out \"%s\"",

+	   key.toLocal8Bit().data(), cert.toLocal8Bit().data());

+	system(tmp);

+	snprintf(tmp, 1000, "chmod 0600 \"%s\" \"%s\"", key.toLocal8Bit().data(), cert.toLocal8Bit().data());

+	system(tmp);

+}

+}

diff --git a/src/server/net/certmanager.h b/src/server/net/certmanager.h
new file mode 100644
index 0000000..c69bc23
--- /dev/null
+++ b/src/server/net/certmanager.h
@@ -0,0 +1,29 @@
+/*

+# Copyright (c) 2009 - OpenSLX Project, Computer Center University of Freiburg

+#

+# This program is free software distributed under the GPL version 2.

+# See http://openslx.org/COPYING

+#

+# If you have any feedback please consult http://openslx.org/feedback and

+# send your suggestions, praise, or complaints to feedback@openslx.org

+#

+# General information about OpenSLX can be found at http://openslx.org/

+# -----------------------------------------------------------------------------

+# src/util/CertManager.cpp

+#    - Manage SSL certificates

+#    - provide access by name

+# -----------------------------------------------------------------------------

+*/

+

+#ifndef CERTMANAGER_H_

+#define CERTMANAGER_H_

+

+#include <QtNetwork/QSslCertificate>

+#include <QtNetwork/QSslKey>

+

+namespace CertManager

+{

+	bool getPrivateKeyAndCert(const QString &name, QSslKey &key, QSslCertificate &cert);

+}

+

+#endif /* CERTMANAGER_H_ */

diff --git a/src/server/net/client.cpp b/src/server/net/client.cpp
new file mode 100644
index 0000000..ca91e76
--- /dev/null
+++ b/src/server/net/client.cpp
@@ -0,0 +1,288 @@
+/*
+ * client.cpp
+ *
+ *  Created on: 18.01.2013
+ *      Author: sr
+ */
+
+#include "client.h"
+#include "../util/global.h"
+#include "../../shared/settings.h"
+#include "../../shared/util.h"
+#include <QSslSocket>
+#include <QHostAddress>
+#include <QPixmap>
+#include <cassert>
+
+#define CHALLENGE_LEN 20
+
+ClientId Client::_clientIdCounter = 0;
+
+Client::Client(QSslSocket* socket) :
+	_socket(socket), _authed(0), _desiredProjectionSource(0), _isProjectionSource(false),
+	_currentProjectionSource(0), _vncPort(0), _activeVncClient(false)
+{
+	assert(socket != NULL);
+	_id = ++_clientIdCounter;
+	_pingTimeout = QDateTime::currentMSecsSinceEpoch() + PING_TIMEOUT_MS;
+	_ip = _socket->peerAddress().toString();
+	qDebug("*** Client %s created.", qPrintable(_ip));
+	// Connect important signals
+	connect(_socket, SIGNAL(disconnected()), this, SLOT(onClosed()));
+	connect(_socket, SIGNAL(error(QAbstractSocket::SocketError)), this, SLOT(onError(QAbstractSocket::SocketError)));
+	connect(_socket, SIGNAL(sslErrors(const QList<QSslError> &)), this, SLOT(onSslErrors(const QList<QSslError> &)));
+	connect(_socket, SIGNAL(readyRead()), this, SLOT(onDataArrival()));
+	// Send challenge
+	_challenge.resize(CHALLENGE_LEN);
+	for (int i = 0; i < CHALLENGE_LEN; ++i)
+		_challenge[i] = qrand() & 0xff;
+	_toClient.reset();
+	_toClient.setField(_ID, _CHALLENGE);
+	_toClient.setField(_CHALLENGE, _challenge);
+	_toClient.writeMessage(_socket);
+	// give client 3 seconds to complete handshake
+	_timerIdAuthTimeout = startTimer(3000);
+}
+
+Client::~Client()
+{
+	if (_socket != NULL)
+	{
+		qDebug("**** DELETE IN DESTRUCTOR");
+		_socket->deleteLater();
+	}
+	qDebug("*** Client %s destroyed.", qPrintable(_ip));
+}
+
+void Client::timerEvent(QTimerEvent* event)
+{
+	if (event->timerId() == _timerIdAuthTimeout)
+	{
+		// Client did not send login request within 3 seconds
+		killTimer(_timerIdAuthTimeout);
+		_timerIdAuthTimeout = 0;
+		this->disconnect();
+	}
+}
+
+void Client::sendMessage(NetworkMessage& message)
+{
+	if (_socket == NULL || _socket->state() != QAbstractSocket::ConnectedState)
+		return;
+	message.writeMessage(_socket);
+	if (!message.writeComplete())
+	{
+		qCritical() << "SendMessage to client " << _name << "@" << _ip << " failed!";
+	}
+}
+
+void Client::requestThumb(const int width, const int height)
+{
+	if (_socket == NULL || _socket->state() != QAbstractSocket::ConnectedState)
+	{
+		qDebug("requestThumb called in bad state");
+		return;
+	}
+	_toClient.reset();
+	_toClient.setField(_ID, _THUMB);
+	_toClient.setField(_X, QString::number(width));
+	_toClient.setField(_Y, QString::number(height));
+	_toClient.writeMessage(_socket);
+}
+
+void Client::onDataArrival()
+{
+	_pingTimeout = QDateTime::currentMSecsSinceEpoch() + PING_TIMEOUT_MS;
+	//
+	if (_socket == NULL || _socket->state() != QAbstractSocket::ConnectedState)
+	{
+		qDebug("dataArrival called in bad state");
+		return;
+	}
+
+	//qDebug() << _socket->bytesAvailable() << " bytes to read";
+	bool ret;
+	while (_socket->bytesAvailable())
+	{
+		ret = _fromClient.readMessage(_socket); // let the message read data from socket
+		if (!ret)   // error parsing msg, disconnect client!
+		{
+			this->disconnect();
+			return;
+		}
+		if (_fromClient.readComplete())   // message is complete
+		{
+			this->handleMsg();
+			if (_socket == NULL)
+				return;
+			_fromClient.reset();
+		}
+	}
+}
+
+void Client::onSslErrors(const QList<QSslError> & errors)
+{
+	this->disconnect();
+}
+
+void Client::onClosed()
+{
+	this->disconnect();
+}
+
+void Client::onError(QAbstractSocket::SocketError errcode)
+{
+	this->disconnect();
+}
+
+void Client::handleMsg()
+{
+	const QString &id = _fromClient.getFieldString(_ID);
+	if (id.isEmpty())
+	{
+		qDebug("Received message with empty ID field. ignored.");
+		return;
+	}
+	qDebug() << "Received message " << id;
+
+	if (_authed == 2)
+	{
+		// Following messages are only valid of the client is already authenticated
+		if (id == _THUMB)
+		{
+			QPixmap pixmap;
+			if (!pixmap.loadFromData(_fromClient.getFieldBytes("IMG")))
+			{
+				qDebug("Could not decode thumbnail image from client.");
+				return;
+			}
+			emit thumbUpdated(this, pixmap);
+		}
+		else if (id == _VNCSERVER)
+		{
+			// Client tells about startup of vnc server
+			const int port = _fromClient.getFieldString("PORT").toInt();
+			if (port <= 0)
+			{
+				if (_vncPort <= 0)
+				{
+					qDebug() << "Starting VNC server on client" << _name << " (" << _ip << ") failed.";
+					// TODO: Show message on manager
+				}
+			}
+			else
+			{
+				_vncRoPass = _fromClient.getFieldString("ROPASS");
+				_vncRwPass = _fromClient.getFieldString("RWPASS");
+			}
+			_vncPort = port;
+			emit vncServerStateChange(this);
+		}
+		else if (id == _VNCCLIENT)
+		{
+			// Client tells us that it started or stopped displaying a remote screen via VNC
+			_activeVncClient = (_fromClient.getFieldString("ENABLED").toInt() != 0);
+			const ClientId other = (ClientId)_fromClient.getFieldString("CLIENTID").toInt();
+
+			if (!_activeVncClient && other == 0)
+				_desiredProjectionSource = 0;
+
+			emit vncClientStateChange(this);
+
+			if (!_activeVncClient)
+				_currentProjectionSource = 0;
+			else
+				_currentProjectionSource = other;
+		}
+		return;
+	}
+
+	if (_authed == 1) // Not authed yet, only care about login requests
+	{
+		if (id == _LOGIN)
+		{
+			killTimer(_timerIdAuthTimeout);
+			_timerIdAuthTimeout = 0;
+			ClientLogin request;
+			request.accept = true;
+			request.host = _fromClient.getFieldString("HOST");
+			request.name = _fromClient.getFieldString("NAME");
+			request.ip = _socket->peerAddress().toString();
+			qDebug() << "Login request by " << request.name;
+			// emit event, see if request is accepted
+			emit authenticating(this, &request);
+			if (!request.accept)
+			{
+				qDebug("Request denied.");
+				this->disconnect(); // Nope
+				return;
+			}
+			// Accepted
+			_authed = 2;
+			qDebug("valid, step <- 2");
+			_name = request.name;
+			_host = request.host;
+			_toClient.reset();
+			_toClient.setField(_ID, _LOGIN);
+			_toClient.writeMessage(_socket);
+			emit authenticated(this);
+		}
+		return;
+	}
+
+	if (_authed == 0)
+	{
+		// Waiting for challenge reply by client
+		if (id == _CHALLENGE)
+		{
+			QByteArray hash(_fromClient.getFieldBytes(_HASH));
+			QByteArray challenge(_fromClient.getFieldBytes(_CHALLENGE));
+			if (genSha1(&Global::sessionNameArray(), &_challenge) != hash)
+			{	// Challenge reply is invalid, drop client
+				_toClient.buildErrorMessage("Challenge reply invalid.");
+				_toClient.writeMessage(_socket);
+				this->deleteLater();
+				return;
+			}
+			// Now answer to challenge by client
+			_toClient.reset();
+			_toClient.setField(_ID, _CHALLENGE);
+			_toClient.setField(_HASH, genSha1(&Global::sessionNameArray(), &challenge));
+			_toClient.writeMessage(_socket);
+			_authed = 1;
+			qDebug("client's challenge reply was valid, step <- 1");
+		}
+		return;
+	}
+
+}
+
+void Client::startVncServer()
+{
+	_vncPort = 0;
+	_toClient.reset();
+	_toClient.setField(_ID, _VNCSERVER);
+	_toClient.setField("ENABLE", QByteArray("1"));
+	sendMessage(_toClient);
+}
+
+void Client::stopVncServer()
+{
+	_toClient.reset();
+	_toClient.setField(_ID, _VNCSERVER);
+	_toClient.setField("ENABLE", QByteArray("0"));
+	sendMessage(_toClient);
+}
+
+void Client::disconnect()
+{
+	if (_socket != NULL)
+	{
+		qDebug("*** Client %s disconnected.", qPrintable(_ip));
+		_socket->blockSignals(true);
+		_socket->abort();
+		_socket->deleteLater();
+		_socket = NULL;
+		this->deleteLater();
+	}
+}
diff --git a/src/server/net/client.h b/src/server/net/client.h
new file mode 100644
index 0000000..8004ebb
--- /dev/null
+++ b/src/server/net/client.h
@@ -0,0 +1,104 @@
+#ifndef CLIENT_H_
+#define CLIENT_H_
+
+#include <QtCore>
+#include <QSslError>
+#include <QAbstractSocket>
+#include "../../shared/networkmessage.h"
+
+class QSslSocket;
+
+struct ClientLogin
+{
+	bool accept;
+	QString name;
+	QString host;
+	QString ip;
+};
+
+typedef int ClientId;
+
+class Client : public QObject
+{
+	Q_OBJECT
+
+private:
+	static ClientId _clientIdCounter;
+
+	QSslSocket *_socket;
+	int _authed; // 0 = challenge sent, awaiting reply 1 = challenge ok, client challenge replied, awaiting login, 2 = ESTABLISHED
+	QString _name;
+	QString _host;
+	QString _ip;
+	QByteArray _challenge;
+	qint64 _pingTimeout;
+	NetworkMessage _toClient, _fromClient;
+	int _timerIdAuthTimeout;
+
+	ClientId _id; // this client's unique id
+
+	// If this client should be projected to from another client, the other client's id is set here. 0 otherwise.
+	// This is not currently used and it is questionable if this makes sense, as it might just be confusing if
+	// several groups students watch different other students.
+	// Also, visualizing such a situation in the GUI in a meaningful way would be hard.
+	ClientId _desiredProjectionSource;
+	// This boolean tells whether this client is currently the VNC broadcast source. This
+	// version only allows "one to all others" setups
+	bool _isProjectionSource;
+
+	ClientId _currentProjectionSource;
+
+	QString _vncRwPass, _vncRoPass;
+	int _vncPort;
+	bool _activeVncClient;
+
+	void handleMsg();
+	void disconnect();
+
+protected:
+	void timerEvent(QTimerEvent* event);
+
+public:
+	explicit Client(QSslSocket* socket);
+	~Client();
+	void requestThumb(const int width, const int height);
+	void sendMessage(NetworkMessage& message);
+	//void acceptData();
+	const inline bool isAuthed() const { return _authed == 2; }
+	const inline QString& name() const { return _name; }
+	const inline QString& host() const { return _host; }
+	const inline QString& ip() const { return _ip; }
+	// The computer ID (used eg. for saving the frame positions) is currently the IP, but this is an extra method for easier modification later on
+	const inline QString& computerId() const { return _ip; }
+	const inline ClientId id() const { return _id; }
+
+	inline const QString& vncRwPass() const { return _vncRwPass; }
+	inline const QString& vncRoPass() const { return _vncRoPass; }
+	inline const int vncPort() const { return _vncPort; }
+	inline const bool isActiveVncClient() const { return _activeVncClient; }
+	inline const bool isActiveVncServer() const { return _vncPort > 0; }
+	inline const ClientId desiredProjectionSource() const { return _desiredProjectionSource; }
+	inline void setDesiredProjectionSource(ClientId source) { _desiredProjectionSource = source; }
+	inline const bool isProjectionSource() const { return _isProjectionSource; }
+	inline void setProjectionSource(bool enable) { _isProjectionSource = enable; }
+	inline const ClientId currentProjectionSource() const { return _currentProjectionSource; }
+	inline void setCurrentProjectionSource(ClientId source) { _currentProjectionSource = source; }
+	void startVncServer();
+	void stopVncServer();
+
+signals:
+	void authenticating(Client* client, ClientLogin* request);
+	void authenticated(Client* client);
+	void thumbUpdated(Client* client, const QPixmap& thumb);
+	void vncServerStateChange(Client* client);
+	void vncClientStateChange(Client* client);
+
+private slots:
+	void onSslErrors(const QList<QSslError> & errors); // triggered for errors that occur during SSL negotiation
+	void onDataArrival(); // triggered if data is available for reading
+	void onClosed(); // triggered if the socket is closed
+	void onError(QAbstractSocket::SocketError errcode); // triggered if an error occurs on the socket
+
+};
+
+#endif /* CLIENT_H_ */
diff --git a/src/server/net/discoverylistener.cpp b/src/server/net/discoverylistener.cpp
new file mode 100644
index 0000000..051a972
--- /dev/null
+++ b/src/server/net/discoverylistener.cpp
@@ -0,0 +1,165 @@
+/*
+ * discoverylistener.cpp
+ *
+ *  Created on: 25.01.2013
+ *      Author: sr
+ */
+
+#include "discoverylistener.h"
+#include "certmanager.h"
+#include "../util/global.h"
+#include "../../shared/settings.h"
+#include "../../shared/network.h"
+#include "../../shared/util.h"
+#include <QCryptographicHash>
+#include <QSslCertificate>
+#include <QSslKey>
+
+#define UDPBUFSIZ 9000
+#define SPAM_CUTOFF 50
+#define SPAM_MODERATE_INTERVAL 6787
+#define SPAM_MODERATE_AT_ONCE 100
+
+// static objects
+
+
+// +++ static ++++ hash ip address +++
+
+static quint16 hash(const QHostAddress& host)
+{
+	static quint16 seed1 = 0, seed2 = 0;
+	while (seed1 == 0) // Make sure the algorithm uses different seeds each time the program is
+	{			// run to prevent hash collision attacks
+		seed1 = (quint16)(qrand() & 0xffff);
+		seed2 = (quint16)(qrand() & 0xffff);
+	}
+	quint8 data[16], len;
+	if (host.protocol() == QAbstractSocket::IPv4Protocol)
+	{
+		// IPv4
+		quint32 addr = host.toIPv4Address();
+		len = 4;
+		memcpy(data, &addr, len);
+	}
+	else if (QAbstractSocket::IPv6Protocol)
+	{
+		// IPv6
+		len = 16;
+		// Fast version (might break with future qt versions)
+		memcpy(data, host.toIPv6Address().c, len);
+		/* // --- Safe version (but better try to figure out a new fast way if above stops working ;))
+		 Q_IPV6ADDR addr = host.toIPv6Address();
+		 for (int i = 0; i < len; ++i)
+		 data[i] = addr[i];
+		 */
+	}
+	else
+	{
+		// Durr?
+		len = 2;
+		data[0] = (quint16)qrand();
+		data[1] = (quint16)qrand();
+	}
+	quint16 result = 0;
+	quint16 mod = seed1;
+	for (quint8 i = 0; i < len; ++i)
+	{
+		result = ((result << 1) + data[i]) ^ mod; // because of the shift this algo is not suitable for len(input) > 8
+		mod += seed2 + data[i];
+	}
+	return result;
+}
+
+// +++++++++++++++++++++++++++++++++++
+
+DiscoveryListener::DiscoveryListener() :
+	_socket(this), _counterResetPos(0)
+{
+	if (!_socket.bind(SERVICE_DISCOVERY_PORT))
+		qFatal("Could not bind to service discovery port %d", (int)SERVICE_DISCOVERY_PORT);
+	connect(&_socket, SIGNAL(readyRead()), this, SLOT(onReadyRead()));
+	for (int i = 0; i < SD_PACKET_TABLE_SIZE; ++i)
+		_packetCounter[i] = 0;
+	startTimer((SPAM_MODERATE_AT_ONCE * SPAM_MODERATE_INTERVAL) / SD_PACKET_TABLE_SIZE + 1);
+}
+
+DiscoveryListener::~DiscoveryListener()
+{
+	// TODO Auto-generated destructor stub
+}
+
+/**
+ * Overrides
+ */
+
+/**
+ * Decrease packet counters
+ */
+void DiscoveryListener::timerEvent(QTimerEvent* event)
+{
+	for (int i = 0; i < SPAM_MODERATE_AT_ONCE; ++i)
+	{
+		if (++_counterResetPos >= SD_PACKET_TABLE_SIZE)
+			_counterResetPos = 0;
+		if (_packetCounter[_counterResetPos] > 10)
+			_packetCounter[_counterResetPos] -= 10;
+		else if (_packetCounter[_counterResetPos] != 0)
+			_packetCounter[_counterResetPos] = 0;
+	}
+}
+
+/**
+ * Slots
+ */
+
+void DiscoveryListener::onReadyRead()
+{
+	char data[UDPBUFSIZ];
+	QHostAddress addr;
+	quint16 port;
+	while (_socket.hasPendingDatagrams())
+	{
+		const qint64 size = _socket.readDatagram(data, UDPBUFSIZ, &addr, &port);
+		if (size <= 0)
+			continue;
+		const quint16 bucket = hash(addr) % SD_PACKET_TABLE_SIZE;
+		if (_packetCounter[bucket] > SPAM_CUTOFF)
+		{
+			qDebug() << "SD: Potential (D)DoS from " << _socket.peerAddress().toString();
+			// emit some signal and pop up a big warning that someone is flooding/ddosing the PVS SD
+			// ... on the other hand, will the user understand? ;)
+			continue;
+		}
+		++_packetCounter[bucket];
+		_packet.reset();
+		if (!_packet.readMessage(data, (quint32)size))
+			continue;
+		// Valid packet, process it:
+		const QByteArray iplist(_packet.getFieldBytes(_IPLIST));
+		const QByteArray hash(_packet.getFieldBytes(_HASH));
+		const QByteArray salt1(_packet.getFieldBytes(_SALT1));
+		const QByteArray salt2(_packet.getFieldBytes(_SALT2));
+		// For security, the salt has to be at least 16 bytes long
+		if (salt1.size() < 16 || salt2.size() < 16)
+			continue; // To make this more secure, you could remember the last X salts used, and ignore new packets using the same
+		// Check if the source IP of the packet matches any of the addresses given in the IP list
+		if (!Network::isAddressInList(QString::fromUtf8(iplist), addr.toString()))
+			continue;
+		// If so, check if the submitted hash seems valid
+		if (genSha1(&Global::sessionNameArray(), &salt1, &iplist) != hash)
+			continue; // did not match local session name
+		qDebug("Got matching discovery request...");
+		QByteArray myiplist(Network::interfaceAddressesToString().toUtf8());
+		QSslKey key;
+		QSslCertificate cert;
+		CertManager::getPrivateKeyAndCert("manager", key, cert);
+		QByteArray certhash(cert.digest(QCryptographicHash::Sha1));
+		// Reply to client
+		_packet.reset();
+		_packet.setField(_HASH, genSha1(&Global::sessionNameArray(), &salt2, &myiplist, &CLIENT_PORT_ARRAY, &certhash));
+		_packet.setField(_IPLIST, myiplist);
+		_packet.setField(_PORT, CLIENT_PORT_ARRAY);
+		_packet.setField(_CERT, certhash);
+		_packet.writeMessage(&_socket, addr, port);
+	}
+}
diff --git a/src/server/net/discoverylistener.h b/src/server/net/discoverylistener.h
new file mode 100644
index 0000000..64d4351
--- /dev/null
+++ b/src/server/net/discoverylistener.h
@@ -0,0 +1,40 @@
+/*
+ * discoverylistener.h
+ *
+ *  Created on: 25.01.2013
+ *      Author: sr
+ */
+
+#ifndef DISCOVERYLISTENER_H_
+#define DISCOVERYLISTENER_H_
+
+#include <QtCore>
+#include <QUdpSocket>
+#include "../../shared/networkmessage.h"
+
+#define SD_PACKET_TABLE_SIZE 20000
+
+class DiscoveryListener : public QObject
+{
+	Q_OBJECT
+
+private:
+	QUdpSocket _socket;
+	NetworkMessage _packet;
+	int _counterResetPos;
+
+	quint8 _packetCounter[SD_PACKET_TABLE_SIZE]; // count packets per source address to ignore spammers
+
+protected:
+	void timerEvent(QTimerEvent* event);
+
+public:
+	DiscoveryListener();
+	virtual ~DiscoveryListener();
+
+private slots:
+	void onReadyRead();
+
+};
+
+#endif /* DISCOVERYLISTENER_H_ */
diff --git a/src/server/net/listenserver.cpp b/src/server/net/listenserver.cpp
new file mode 100644
index 0000000..706962d
--- /dev/null
+++ b/src/server/net/listenserver.cpp
@@ -0,0 +1,40 @@
+#include "listenserver.h"
+#include "client.h"
+#include <QSslSocket>
+
+#define MAX_CLIENTS 50
+
+ListenServer::ListenServer(quint16 port)
+{
+	if (!_server.listen(QHostAddress::Any, port) || !_server.isListening())
+		qFatal("Cannot bind to TCP port %d (incoming SSL clients)", (int)port);
+	connect(&_server, SIGNAL(newConnection()), this, SLOT(newClientConnection()));
+}
+
+ListenServer::~ListenServer()
+{
+	_server.close();
+	for (int i = 0; i < _clients.size(); ++i)
+		_clients[i]->deleteLater();
+}
+
+/**
+ * Slots
+ */
+
+void ListenServer::newClientConnection()
+{
+	QSslSocket* sock;
+	while ((sock = (QSslSocket*)_server.nextPendingConnection()) != NULL)
+	{
+		if (_clients.size() >= MAX_CLIENTS)
+		{
+			sock->abort();
+			sock->deleteLater();
+			continue;
+		}
+		Client* client = new Client(sock);
+		_clients.append(client); // create new client class and add to list
+		emit newClient(client);
+	}
+}
diff --git a/src/server/net/listenserver.h b/src/server/net/listenserver.h
new file mode 100644
index 0000000..f237703
--- /dev/null
+++ b/src/server/net/listenserver.h
@@ -0,0 +1,30 @@
+#ifndef LISTENSERVER_H_
+#define LISTENSERVER_H_
+
+#include <QtCore>
+#include <QList>
+#include "sslserver.h"
+
+class Client;
+
+class ListenServer : public QObject
+{
+	Q_OBJECT
+
+private:
+	SslServer _server;
+	QList<Client*> _clients;
+
+public:
+	explicit ListenServer(quint16 port);
+	virtual ~ListenServer();
+
+private slots:
+	void newClientConnection();
+
+signals:
+	void newClient(Client* client);
+
+};
+
+#endif /* LISTENSERVER_H_ */
diff --git a/src/server/net/sslserver.cpp b/src/server/net/sslserver.cpp
new file mode 100644
index 0000000..70daea4
--- /dev/null
+++ b/src/server/net/sslserver.cpp
@@ -0,0 +1,113 @@
+/*
+ # Copyright (c) 2009 - OpenSLX Project, Computer Center University of Freiburg
+ #
+ # This program is free software distributed under the GPL version 2.
+ # See http://openslx.org/COPYING
+ #
+ # If you have any feedback please consult http://openslx.org/feedback and
+ # send your suggestions, praise, or complaints to feedback@openslx.org
+ #
+ # General information about OpenSLX can be found at http://openslx.org/
+ # -----------------------------------------------------------------------------
+ # src/net/SslServer.cpp
+ #    - provide QTcpServer-like behaviour for SSL
+ # -----------------------------------------------------------------------------
+ */
+
+#include "sslserver.h"
+#include <QtNetwork/QSslCipher>
+#include <QtNetwork/QSslSocket>
+#include "certmanager.h"
+
+SslServer::SslServer()
+{
+	_tmr = startTimer(5123);
+	//QSslSocket::setDefaultCiphers(QSslSocket::supportedCiphers());
+}
+
+SslServer::~SslServer()
+{
+	killTimer((_tmr));
+}
+
+void SslServer::incomingConnection(int socketDescriptor)
+{
+	QSslSocket *serverSocket = new QSslSocket(NULL);
+	connect(serverSocket, SIGNAL(sslErrors(const QList<QSslError> &)), this, SLOT(sslErrors(const QList<QSslError> &)));
+	QSslKey key;
+	QSslCertificate cert;
+	CertManager::getPrivateKeyAndCert("manager", key, cert);
+	serverSocket->setPrivateKey(key);
+	serverSocket->setLocalCertificate(cert);
+	serverSocket->setPeerVerifyMode(QSslSocket::VerifyNone);
+	serverSocket->setProtocol(QSsl::SslV3);
+	//printf("Keylen %d\n", serverSocket->privateKey().length());
+	if (serverSocket->setSocketDescriptor(socketDescriptor))
+	{
+		// Once the connection is successfully encrypted, raise our newConnection event
+		connect(serverSocket, SIGNAL(encrypted()), this, SIGNAL(newConnection()));
+		serverSocket->startServerEncryption();
+		_pending.push_back(serverSocket);
+	}
+	else
+	{
+		serverSocket->deleteLater();
+	}
+}
+
+void SslServer::sslErrors(const QList<QSslError> & errors)
+{
+	//qDebug("FIXME: SSL ERRORS on SERVER: %s", qPrintable(errors.begin()->errorString()));
+}
+
+void SslServer::timerEvent(QTimerEvent* event)
+{
+	// Remove all sockets marked for deletion
+	while (!_delete.isEmpty())
+	{
+		QSslSocket *sock = _delete.takeFirst();
+		sock->blockSignals(true);
+		sock->deleteLater();
+	}
+	_delete = _pending;
+	_pending.clear();
+}
+
+bool SslServer::hasPendingConnections()
+{
+	for (QList<QSslSocket*>::iterator it(_pending.begin()); it != _pending.end(); it++)
+	{
+		qDebug("State: %d - Encrypted: %d", (int)(*it)->state(), (*it)->isEncrypted());
+		if ((*it)->state() == QAbstractSocket::ConnectedState && (*it)->isEncrypted())
+			return true;
+	}
+	return false;
+}
+
+QTcpSocket* SslServer::nextPendingConnection()
+{
+	for (QList<QSslSocket*>::iterator it(_pending.begin()); it != _pending.end(); it++)
+	{
+		if ((*it)->state() == QAbstractSocket::ConnectedState && (*it)->isEncrypted())
+		{
+			QSslSocket *sock = *it;
+			QObject::disconnect(sock, SIGNAL(encrypted()), this, SIGNAL(newConnection()));
+			_pending.removeAll(sock);
+			_delete.removeAll(sock);
+			return sock;
+		}
+	}
+	for (QList<QSslSocket*>::iterator it(_delete.begin()); it != _delete.end(); it++)
+	{
+		if ((*it)->state() == QAbstractSocket::ConnectedState && (*it)->isEncrypted())
+		{
+			QSslSocket *sock = *it;
+			QObject::disconnect(sock, SIGNAL(encrypted()), this, SIGNAL(newConnection()));
+			_pending.removeAll(sock);
+			_delete.removeAll(sock);
+			return sock;
+		}
+	}
+	return NULL;
+}
+
diff --git a/src/server/net/sslserver.h b/src/server/net/sslserver.h
new file mode 100644
index 0000000..400bf6a
--- /dev/null
+++ b/src/server/net/sslserver.h
@@ -0,0 +1,50 @@
+/*
+# Copyright (c) 2009 - OpenSLX Project, Computer Center University of Freiburg
+#
+# This program is free software distributed under the GPL version 2.
+# See http://openslx.org/COPYING
+#
+# If you have any feedback please consult http://openslx.org/feedback and
+# send your suggestions, praise, or complaints to feedback@openslx.org
+#
+# General information about OpenSLX can be found at http://openslx.org/
+# -----------------------------------------------------------------------------
+# src/net/SslServer.cpp
+#    - provide QTcpServer-like behaviour for SSL
+# -----------------------------------------------------------------------------
+*/
+
+#ifndef SSLSERVER_H_
+#define SSLSERVER_H_
+
+#include <QtCore/QList>
+#include <QtNetwork/QTcpServer>
+#include <QtNetwork/QSslError>
+
+class QSslSocket;
+
+class SslServer : public QTcpServer
+{
+    Q_OBJECT
+
+private Q_SLOTS:
+    void sslErrors ( const QList<QSslError> & errors );
+
+public:
+    SslServer();
+    virtual ~SslServer();
+
+    bool hasPendingConnections ();
+    // This one has to return a TcpSocket as we're overwriting from the base class
+    // just cast it to QSslSocket later
+    virtual QTcpSocket* nextPendingConnection();
+
+protected:
+    void incomingConnection(int socketDescriptor);
+    void timerEvent (QTimerEvent* event);
+    QList<QSslSocket*> _pending;
+    QList<QSslSocket*> _delete;
+    int _tmr;
+};
+
+#endif /* SSLSERVER_H_ */
diff --git a/src/server/sessionnamewindow/sessionnamewindow.cpp b/src/server/sessionnamewindow/sessionnamewindow.cpp
new file mode 100644
index 0000000..1d8c699
--- /dev/null
+++ b/src/server/sessionnamewindow/sessionnamewindow.cpp
@@ -0,0 +1,68 @@
+/*
+ # Copyright (c) 2009 - OpenSLX Project, Computer Center University of Freiburg
+ #
+ # This program is free software distributed under the GPL version 2.
+ # See http://openslx.org/COPYING
+ #
+ # If you have any feedback please consult http://openslx.org/feedback and
+ # send your suggestions, praise, or complaints to feedback@openslx.org
+ #
+ # General information about OpenSLX can be found at http://openslx.org/
+ # -----------------------------------------------------------------------------
+ # mainWindow.cpp
+ This is the Main class for the pvsManager. The GUI is contructed here.
+ # -----------------------------------------------------------------------------
+ */
+
+#include <QtGui>
+#include "sessionnamewindow.h"
+#include "../util/global.h"
+
+#include "ui_sessionname.h"
+
+SessionNameWindow::SessionNameWindow(QWidget *parent) :
+	QDialog(parent), ui(new Ui::SessionName)
+
+{
+	ui->setupUi(this);
+	connect(ui->bboxOkCancel, SIGNAL(accepted()),  this, SLOT(onOkClicked()));
+	connect(ui->bboxOkCancel, SIGNAL(rejected()), this, SLOT(close()));
+	connect(ui->cmdRandom, SIGNAL(clicked(bool)), this, SLOT(onGenerateRandomName()));
+}
+
+SessionNameWindow::~SessionNameWindow()
+{
+	delete ui;
+}
+
+void SessionNameWindow::show(const QString& name)
+{
+	ui->txtName->setText(name);
+	this->showNormal();
+}
+
+/*
+ * Overridden methods
+ */
+
+void SessionNameWindow::closeEvent(QCloseEvent *e)
+{
+	e->ignore();
+	this->hide();
+}
+
+/**
+ * Slots
+ */
+
+void SessionNameWindow::onOkClicked()
+{
+	Global::setSessionName(ui->txtName->text());
+	emit updateSessionName();
+	this->hide();
+}
+
+void SessionNameWindow::onGenerateRandomName()
+{
+	ui->txtName->setText(QString::number(qrand() % 9000 + 1000));
+}
diff --git a/src/server/sessionnamewindow/sessionnamewindow.h b/src/server/sessionnamewindow/sessionnamewindow.h
new file mode 100644
index 0000000..ed944c1
--- /dev/null
+++ b/src/server/sessionnamewindow/sessionnamewindow.h
@@ -0,0 +1,38 @@
+#ifndef _SESSIONNAMEWINDOW_H_
+#define _SESSIONNAMEWINDOW_H_
+
+#include <QtGui>
+
+
+namespace Ui
+{
+class SessionName;
+}
+
+class SessionNameWindow : public QDialog
+{
+    Q_OBJECT
+
+private:
+    Ui::SessionName *ui;
+
+public:
+    SessionNameWindow(QWidget *parent = 0);
+    ~SessionNameWindow();
+
+    void show(const QString& name);
+
+protected:
+    void closeEvent(QCloseEvent *e);
+
+private slots:
+	void onOkClicked();
+	void onGenerateRandomName();
+
+signals:
+	void updateSessionName();
+
+};
+
+
+#endif
diff --git a/src/server/util/global.cpp b/src/server/util/global.cpp
new file mode 100644
index 0000000..9b7b4f2
--- /dev/null
+++ b/src/server/util/global.cpp
@@ -0,0 +1,17 @@
+/*
+ * global.cpp
+ *
+ *  Created on: 29.01.2013
+ *      Author: sr
+ */
+
+#include "global.h"
+
+QString Global::_sessionName = QString();
+QByteArray Global::_sessionNameArray = QByteArray();
+
+void Global::setSessionName(const QString& name)
+{
+	Global::_sessionName = name;
+	Global::_sessionNameArray = name.toUtf8();
+}
diff --git a/src/server/util/global.h b/src/server/util/global.h
new file mode 100644
index 0000000..38eec6d
--- /dev/null
+++ b/src/server/util/global.h
@@ -0,0 +1,29 @@
+/*
+ * global.h
+ *
+ *  Created on: 29.01.2013
+ *      Author: sr
+ */
+
+#ifndef GLOBAL_H_
+#define GLOBAL_H_
+
+#include <QString>
+#include <QByteArray>
+
+class Global
+{
+private:
+	Global(){}
+	~Global(){}
+
+	static QString _sessionName;
+	static QByteArray _sessionNameArray;
+
+public:
+	static const QString& sessionName() { return Global::_sessionName; }
+	static const QByteArray& sessionNameArray() { return Global::_sessionNameArray; }
+	static void setSessionName(const QString& name);
+};
+
+#endif /* GLOBAL_H_ */
diff --git a/src/server/util/util.cpp b/src/server/util/util.cpp
new file mode 100644
index 0000000..7ff9404
--- /dev/null
+++ b/src/server/util/util.cpp
@@ -0,0 +1,14 @@
+/*
+ * Util.cpp
+ *
+ *  Created on: 18.01.2013
+ *      Author: sr
+ */
+
+#include "util.h"
+
+namespace Util
+{
+
+}
+
diff --git a/src/server/util/util.h b/src/server/util/util.h
new file mode 100644
index 0000000..e2d6a62
--- /dev/null
+++ b/src/server/util/util.h
@@ -0,0 +1,17 @@
+#ifndef UTIL_H_
+#define UTIL_H_
+
+// Helper for getting a settings object in various places, so if you ever change the organization, location,
+// file format or anything, you won't have to edit in 100 places.
+// Use like this:
+// USER_SETTINGS(settings)
+// settings.value("somekey")
+#define USER_SETTINGS(name) QSettings name (QSettings::IniFormat, QSettings::UserScope, "openslx", "pvs2mgr")
+#define SYSTEM_SETTINGS(name) QSettings name (QSettings::IniFormat, QSettings::SystemScope, "openslx", "pvs2mgr")
+
+namespace Util
+{
+
+}
+
+#endif /* UTIL_H_ */