// Returns true if processing was successful
protected virtual bool ProcessSinglePacket(ControlCommand.Command? requiredCommand = null)
{
// Alias EncryptedStream as ns for cleaner code
Stream ns = EncryptedStream;
byte[] commandBuffer = new byte[1];
int commandBytesRead = 0;
// Try reading the command byte
try
{
commandBytesRead = ns.Read(commandBuffer, 0, 1);
} catch (Exception) {
return false;
}
// If we read a command byte
if (commandBytesRead == 1)
{
ControlCommand.Command packetCommand = (ControlCommand.Command)commandBuffer[0];
CommandResult cr = null;
// Handle incoming commands
switch (packetCommand)
{
case ControlCommand.Command.AvailableSettingsRequest:
cr = AvailableSettingsRequestCommand.Instance.HandleCommand(ns);
Dictionary<string, object> availableResponseParameters = new Dictionary<string, object>();
availableResponseParameters["availableSettings"] = OverlaySettings.GetValidOverlaySettings();
bool responseSent = AvailableSettingsResponseCommand.Instance.SendCommand(ns, availableResponseParameters);
break;
case ControlCommand.Command.AvailableSettingsResponse:
cr = AvailableSettingsResponseCommand.Instance.HandleCommand(ns);
if (cr.Success)
AvailableRemoteSettings = (List<AvailableOverlaySetting>) cr.Data["remoteSettings"];
break;
case ControlCommand.Command.DownloadSettingRequest:
cr = DownloadSettingRequestCommand.Instance.HandleCommand(ns);
if (cr.Success)
{
string settingPath = (string)cr.Data["settingPath"];
FileInfo overlaySettingFile = new FileInfo(Path.Combine(OverlaySettings.OverlaysBasePath.FullName, settingPath));
DirectoryInfo overlaySettingFolder = overlaySettingFile.Directory;
Dictionary<string, object> downloadResponseParameters = new Dictionary<string, object>();
downloadResponseParameters["fromDirectory"] = overlaySettingFolder;
DownloadSettingResponseCommand.Instance.SendCommand(ns, downloadResponseParameters);
}
break;
case ControlCommand.Command.DownloadSettingResponse:
cr = DownloadSettingResponseCommand.Instance.HandleCommand(ns);
if (cr.Success)
{
RaiseSettingsDownloaded((DirectoryInfo)cr.Data["savedDirectory"]);
}
break;
case ControlCommand.Command.OverlaySettingSelect:
cr = OverlaySettingSelectCommand.Instance.HandleCommand(ns);
if (cr.Success)
{
if ((bool) cr.Data["remote"])
{
Dictionary<string, object> downloadParameters = new Dictionary<string, object>();
downloadParameters["settingPath"] = cr.Data["selectedPath"];
// Open when download completes
SettingsDownloaded += new SettingsDownloadedHandler(SettingsDownloaded_OpenOnComplete);
remoteSettingToDownload = new AvailableOverlaySetting() { Path = (string)cr.Data["selectedPath"], Local = !((bool)cr.Data["remote"]) };
DownloadSettingRequestCommand.Instance.SendCommand(ns, downloadParameters);
} else {
try
{
OverlaySettings.Instance.Load(new FileInfo(Path.Combine(OverlaySettings.OverlaysBasePath.FullName, (string)cr.Data["selectedPath"])));
} catch (OverlayLoadingException ole) {
MessageBox.Show(ole.Message);
return false;
}
OverlaySettingLoadedCommand.Instance.SendCommand(ns);
}
}
break;
case ControlCommand.Command.OverlaySettingLoaded:
cr = OverlaySettingLoadedCommand.Instance.HandleCommand(ns);
break;
case ControlCommand.Command.UpdateVariable:
cr = UpdateVariableCommand.Instance.HandleCommand(ns);
if (cr.Success)
{
string variableName = (string)cr.Data["variableName"];
string variableValue = (string)cr.Data["variableValue"];
// Update our dictionary's value of variableName with variableValue
OverlaySettings.Instance.UpdateVariableFromNetwork(variableName, variableValue);
}
break;
case ControlCommand.Command.Close:
cr = CloseCommand.Instance.HandleCommand(ns);
if (cr.Success)
return false;
break;
// Unknown command
default:
return false;
}
if (!cr.Success)
return false;
// Mark packet processed if mutex is valid
if (ProcessedCommands.ContainsKey(packetCommand) && ProcessedCommands[packetCommand] != null)
ProcessedCommands[packetCommand].Set();
// If we processed a command that wasn't required, fail
if (requiredCommand.HasValue && ((ControlCommand.Command)commandBuffer[0]) != requiredCommand.Value)
return false;
}
return true;
}
protected void WaitForProcessedTracking(ControlCommand.Command c)
{
EventWaitHandle commandWaitHandle = ProcessedCommands[c];
commandWaitHandle.WaitOne();
commandWaitHandle.Close();
ProcessedCommands.Remove(c);
}
protected void MarkForProcessedTracking(ControlCommand.Command c)
{
ProcessedCommands[c] = new ManualResetEvent(false);
}
