//start serwera
private void button1_Click(object sender, EventArgs e) //start server
{
try {
if (Regex.IsMatch(IPTextBox.Text, @"\b\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}\b") && !is_running)
{
server = new TcpListener(IPAddress.Parse(IPTextBox.Text), int.Parse(PortTextBox.Text));
server.Start();
ReadUserDataFromFile("userdata.txt");
TextConsole.AppendText("Server started\n");
TextConsole.AppendText("Waiting for client...");
client = server.AcceptTcpClient();
socket = client.Client;
TextConsole.AppendText("Client connected \n");
STR = new StreamReader(client.GetStream());
STW = new StreamWriter(client.GetStream());
STW.AutoFlush = true;
is_running = true;
STW.WriteLine("220 " + server_name + " " + DateTime.Now.ToString("MM\\/dd\\/yyyy h\\:mm tt"));
backgroundWorker1.WorkerSupportsCancellation = true;
backgroundWorker1.RunWorkerAsync(); //receiving data
}
else
{
if (is_running)
{
MessageBox.Show("Already started\n");
}
else
{
MessageBox.Show("Wrong IP Address");
}
}
}
catch (Exception exc)
{
MessageBox.Show(exc.Message);
}
}
private void WriteConsole(string text)
{
TextConsole.AppendText("\n" + text);
}
//odbieranie wiadomosci i rozpoznawanie komend
private void backgroundWorker1_DoWork(object sender, DoWorkEventArgs e)
{
while (client.Connected)
{
try
{
if (ready_to_save_file)
{
this.TextConsole.Invoke(new MethodInvoker(delegate() { TextConsole.AppendText("Saving file" + "\n"); }));
SaveAsFile();
ready_to_save_file = false;
}
else
{
received_message = STR.ReadLine();
if (received_message != "")
{
//this.TextConsole.Invoke(new MethodInvoker( delegate() { TextConsole.AppendText("From Client: "+received_message + "\n"); }));
if (received_message.Length > 3 && received_message.Substring(0, 4) == "Size")
{
_file_size = int.Parse(received_message.Substring(5));
this.TextConsole.Invoke(new MethodInvoker(delegate() { TextConsole.AppendText(received_message + "\n"); }));
SendTextMessage("250 Size Ok");
}
if (received_message.Length > 7 && received_message.Substring(0, 8) == "FileName")
{
this.TextConsole.Invoke(new MethodInvoker(delegate() { TextConsole.AppendText(received_message + "\n"); }));
_file_name = received_message.Substring(9);
ready_to_save_file = true;
SendTextMessage("250 Ready");
}
if (read_mail_message)
{
if (received_message == ".")
{
read_mail_message = false;
}
this.TextConsole.Invoke(new MethodInvoker(delegate() { TextConsole.AppendText(received_message + "\n"); }));
}
if (received_message == "No files")
{
this.TextConsole.Invoke(new MethodInvoker(delegate() { TextConsole.AppendText(received_message + "\n"); }));
}
if (!client_logged && received_message.Substring(0, 4) == "user")
{
bool user_found = false;
foreach (Users user in userDatabase)
{
if (user.username == received_message.Substring(5, received_message.Length - 5))
{
SendTextMessage("250 User Ok");
user_found = true;
}
}
if (!user_found)
{
MessageBox.Show("Wrong username");
}
}
if (!client_logged && received_message.Substring(0, 4) == "pass")
{
bool pass_found = false;
foreach (Users user in userDatabase)
{
if (user.password == received_message.Substring(5, received_message.Length - 5))
{
SendTextMessage("250 Pass Ok");
pass_found = true;
client_logged = true;
}
}
if (!pass_found)
{
MessageBox.Show("Wrong password");
}
}
if (received_message.Length > 9 && received_message.Substring(0, 10) == "mail from:")
{
this.TextConsole.Invoke(new MethodInvoker(delegate() { TextConsole.AppendText(received_message + "\n"); }));
SendTextMessage("250 Ok");
}
if (received_message.Length > 7 && received_message.Substring(0, 8) == "rcpt to:")
{
this.TextConsole.Invoke(new MethodInvoker(delegate() { TextConsole.AppendText(received_message + "\n"); }));
SendTextMessage("250 Accepted");
}
if (received_message.Length >= 4)
{
switch (received_message.Substring(0, 4))
{
case "helo":
{
this.TextConsole.Invoke(new MethodInvoker(delegate() { TextConsole.AppendText(received_message + "\n"); }));
STW.WriteLine("250 Hello " + received_message.Substring(5, received_message.Length - 5) + " " + server_name + " here!");
break;
}
case "data":
{
this.TextConsole.Invoke(new MethodInvoker(delegate() { TextConsole.AppendText(received_message + "\n"); }));
SendTextMessage("354 Ok Send data");
read_mail_message = true;
break;
}
default:
{
break;
}
}
}
received_message = "";
}
}
}
catch (Exception exc)
{
MessageBox.Show(exc.Message.ToString());
}
}
}
