From ccc1b7e667ceaaeb878ffaa728245c3268c5cf73 Mon Sep 17 00:00:00 2001
From: Björn Hagemeister
Date: Thu, 5 Jun 2014 18:45:50 +0200
Subject: Fixed SegFauls by setting _streamingSource to integer and just using
 the clients id, instead of real pointers.

---
 src/server/mainwindow/mainwindow.cpp | 74 +++++++++++++++++++++---------------
 1 file changed, 44 insertions(+), 30 deletions(-)

(limited to 'src/server/mainwindow/mainwindow.cpp')

diff --git a/src/server/mainwindow/mainwindow.cpp b/src/server/mainwindow/mainwindow.cpp
index a6c90c0..6ac7422 100644
--- a/src/server/mainwindow/mainwindow.cpp
+++ b/src/server/mainwindow/mainwindow.cpp
@@ -57,7 +57,7 @@ MainWindow::MainWindow(QString ipListUrl, QWidget* parent) :
 	_tutorFrame = NULL;
 	_selectedFrame = NULL;
 	_mode = Mode::Multicast;
-	_streamingSource = NULL;
+	_streamingSource = 0;
 
 	_sessionNameWindow = new SessionNameWindow(this);
 	_helpWindow = new HelpWindow(this);
@@ -266,10 +266,14 @@ void MainWindow::tellClientCurrentSituation(Client* client)
 	if (_mode == Mode::Broadcast){
 		// _watchers.insert(client->id(), client);
 		client->setWatcher(true);
-		client->startVncClient(_streamingSource);
+		Client* c = getClientFromId(_streamingSource);
+		if (c != NULL) {
+			client->startVncClient(c);
+		}
 	}
 	else if (_mode == Mode::LockedMulticast)
 		client->lockScreen(true);
+
 }
 
 /***************************************************************************//**
@@ -384,8 +388,8 @@ void MainWindow::reset()
 			(*it)->client()->lockScreen(false);
 
 	// Stop server (Clients get stopped on ACK)
-	if (_streamingSource != NULL)
-		_streamingSource->stopVncServer();
+	if (getClientFromId(_streamingSource) != NULL)
+		getClientFromId(_streamingSource)->stopVncServer();
 }
 
 /*
@@ -489,7 +493,7 @@ void MainWindow::changeProjection(Client *from, Mode mode, Client *to)
 		// Set all clients as watchers
 		for (QList<ConnectionFrame*>::iterator it(_clientFrames.begin()); it != _clientFrames.end(); ++it)
 		{
-			if ((*it)->client() != NULL && (*it)->client() != _streamingSource)
+			if ((*it)->client() != NULL && (*it)->client() != getClientFromId(_streamingSource))
 			{
 				// _watchers.insert((*it)->client()->id(), (*it)->client());
 				(*it)->client()->setWatcher(true);
@@ -528,17 +532,20 @@ void MainWindow::changeProjection(Client *from, Mode mode, Client *to)
 	_mode = mode;
 
 	// if there is a server running which is not "from" stop it.
-	if (_streamingSource != NULL && _streamingSource != from)
-		_streamingSource->stopVncServer();
+	if (getClientFromId(_streamingSource) != NULL && getClientFromId(_streamingSource) != from)
+		getClientFromId(_streamingSource)->stopVncServer();
 
 	// Set new streaming source
-	_streamingSource = from;
+	_streamingSource = from->id();
 
 	// If streaming source is already active avoid a restart
-	if (_streamingSource->isActiveVncServer())
-		this->onVncServerStateChange(_streamingSource);
-	else  // Could not take shortcut, (re)start VNC server on source
-		_streamingSource->startVncServer();
+	Client* c = getClientFromId(_streamingSource);
+	if (c != NULL) {
+		if (c->isActiveVncServer())
+			this->onVncServerStateChange(c);
+		else  // Could not take shortcut, (re)start VNC server on source
+			c->startVncServer();
+	}
 }
 
 /***************************************************************************//**
@@ -882,7 +889,7 @@ void MainWindow::onClientAuthenticated(Client* client)
  */
 void MainWindow::onVncServerStateChange(Client* client)
 {
-	if (client == _streamingSource)
+	if (client == getClientFromId(_streamingSource))
 		EnableButtons();
 
 	if (client->isActiveVncServer())
@@ -910,7 +917,7 @@ void MainWindow::onVncServerStateChange(Client* client)
 				if ( (*it)->client() != NULL)
 				{
 					// if (_watchers.contains((*it)->client()->id()))
-					if (getClientFromId((*it)->client()->id())->isWatcher())
+					if ((*it)->client()->isWatcher())
 					{
 						// Unlock destination and connect VNCclient
 						(*it)->client()->lockScreen(false);
@@ -957,25 +964,32 @@ void MainWindow::onVncServerStateChange(Client* client)
  */
 void MainWindow::onVncClientStateChange(Client* client)
 {
-	// VNC Client stopped -> remove from watchers
-	if (!client->isActiveVncClient()){
-		// _watchers.remove(client->id());
-		getClientFromId(client->id())->setWatcher(false);
-
-		// If noboody is watching the multicast stop VNC server
-		// if (_watchers.isEmpty() && _mode != Mode::Broadcast)
-		//	 _streamingSource->stopVncServer();
-		bool noWatchers = true;
-		for (QList<ConnectionFrame*>::iterator it(_clientFrames.begin()); it != _clientFrames.end(); ++it)
-		{
-			if ((*it)->client() != NULL)
+	if (client != NULL)
+	{
+		// VNC Client stopped -> remove from watchers
+		if (!client->isActiveVncClient()){
+			// _watchers.remove(client->id());
+			getClientFromId(client->id())->setWatcher(false);
+
+			// If noboody is watching the multicast stop VNC server
+			// if (_watchers.isEmpty() && _mode != Mode::Broadcast)
+			//	 _streamingSource->stopVncServer();
+			bool noWatchers = true;
+			for (QList<ConnectionFrame*>::iterator it(_clientFrames.begin()); it != _clientFrames.end(); ++it)
 			{
-				if ((*it)->client()->isWatcher())
-					noWatchers = false;
+				if ((*it)->client() != NULL)
+				{
+					if ((*it)->client()->isWatcher())
+						noWatchers = false;
+				}
+			}
+			if (noWatchers && _mode != Mode::Broadcast)
+			{
+				Client* c = getClientFromId(_streamingSource);
+				if (c != NULL)
+					c->stopVncServer();
 			}
 		}
-		if (noWatchers && _mode != Mode::Broadcast)
-			_streamingSource->stopVncServer();
 	}
 }
 
-- 
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