private static void ShowWelcomeMessage(QuarterClient client)
{
White("Security Code:\n");
string code = client.SecurityCode;
Console.ForegroundColor = ConsoleColor.DarkYellow;
for (int i = 0; i < 2; i++)
{
for (int j = 0; j < 4; j++)
{
Console.Write(new string(code.Skip(j * 4 + i * 16).Take(4).ToArray()));
Console.Write(" ");
}
Console.WriteLine("");
}
White(
"\nTo ensure your messages are secured, please verify that the security code\n" +
"displayed on the screen is exactly the same as the one displayed on the client.\n\n");
if (!client.Allowed)
{
White("Use command ");
Blue(".allow " + client.Id);
White(" to allow the client to send messages\n\n");
}
}
private static void MainThread(object data)
{
QuarterClient client = (QuarterClient)data;
Green("\nConnected by " + client.Address.ToString() + "\n");
try
{
client.SendServerPublicKey();
client.AskAESKey();
ShowWelcomeMessage(client);
while (true)
{
byte[] result = client.RecvMessage();
if (result == null)
{
throw new Exception("Closed");
}
if (!client.Allowed)
{
continue;
}
byte[] MsgID = result.Take(4).ToArray();
byte[] Msg = result.Skip(4).ToArray();
HandleMessage(client, Msg);
client.SendMessage(ToClientFlag.PONG_FLAG.Concat(MsgID).ToArray());
}
}
catch
{
Red("Disconnected by " + client.Address.ToString() + "\n");
}
client.Close();
Red("Closed " + client.Address.ToString() + "\n");
}
private static void HandleMessage(QuarterClient client, byte[] msg)
{
string str = Encoding.UTF8.GetString(msg);
if (client.Server.Flags["typing"])
{
Keyboard.SendString(str);
}
if (client.Server.Flags["clipboard"])
{
Keyboard.SetClipboard(str);
}
if (client.Server.Flags["print"])
{
Blue("#" + client.Id + "> ");
White(str + "\n");
}
}
public ClientWorker(QuarterServer server, TcpClient tcp)
{
Client = new QuarterClient(server, tcp);
new Thread(MainThread).Start(Client);
}