private void Call()
{
string targetLogin = connection[0];
if (String.IsNullOrEmpty(targetLogin))
{
connection.SendMessage(CommandSet.Error, ErrorMessageID.UnknownError);
return;
}
bool isFriend;
lock (ThreadSync.Lock)
{
isFriend = IsFriend(targetLogin);
}
if (!isFriend)
{
connection.SendMessage(CommandSet.Error, ErrorMessageID.NotInContacts);
return;
}
bool isOnline;
lock (ThreadSync.Lock)
{
isOnline = UserCollection.IsOnline(targetLogin);
}
if (!isOnline)
{
connection.SendMessage(CommandSet.Call, ErrorMessageID.UserOffline);
return;
}
User targetUser;
try
{
targetUser = UserCollection.GetUserByLogin(targetLogin);
}
catch
{
connection.SendMessage(CommandSet.Error, ErrorMessageID.UnknownError);
return;
}
if (targetUser.IsBusy)
{
connection.SendMessage(CommandSet.Call, ErrorMessageID.UserBusy);
return;
}
connection.SendMessage(CommandSet.Call, targetUser.GetIPString(), targetUser.Firstport, targetUser.SecondPort);
}
public void SendContacts()
{
UpdateContactsList();
string[] contacts = new string[ContactsList.Count];
for (int i = 0; i < contacts.Length; i++)
{
Contact contact = ContactsList[i];
string code = "0";
if (UserCollection.IsOnline(contact.Login))
{
code = "1";
}
contacts[i] = contact.ToString() + ";" + code;
}
connection.SendMessage(CommandSet.Contacts, String.Join(";", contacts));
}
private void AcceptSession(Thread connectionThread, TcpClient userConnection)
{
System.Timers.Timer timeout = new System.Timers.Timer(5000); // timer ustawiony na 5 sekund, tyle czasu ma klient na przesłanie danych
timeout.Elapsed += delegate { onConnectionTimeoutEvent(connectionThread, userConnection); };
timeout.Start();
Connection connection = new Connection(userConnection);
connection.ReceiveMessage();
if (connection.Command == CommandSet.Login || connection.Command == CommandSet.Register)
{
if (UserCollection.IsOnline(connection[0]))
{
connection.SendMessage(CommandSet.AuthFail, ErrorMessageID.UserAlreadyLoggedIn);
connection.Disconnect();
return;
}
bool isNewUser = false;
string login = connection[0].ToLower();
string password = connection[1];
string name = null;
string firstPort = null, secondPort = null;
if (connection.Command == CommandSet.Login)
{
firstPort = connection[2];
secondPort = connection[3];
}
else if (connection.Command == CommandSet.Register)
{
firstPort = connection[3];
secondPort = connection[4];
isNewUser = true;
name = connection[2];
}
User user;
NetworkCredential userCredential;
try
{
userCredential = new NetworkCredential(login, password);
}
catch // jeśli dane podane przez klienta mają nieprawidłowy format
{
userConnection.Close();
return;
}
timeout.Stop();
string errorMessageID = ErrorMessageID.UnknownError; //ewentualna odpowiedz bazy danych w przypadku błędu
bool isValidUser;
lock (ThreadSync.Lock)
{
isValidUser = Database.TryGetUser(out user, userCredential, ref errorMessageID, isNewUser, name); // sprawdzamy czy użytkownik istnieje w bazie danych oraz czy podał prawidłowe hasło
}
if (!isValidUser)
{
connection.SendMessage(CommandSet.AuthFail, errorMessageID);
connection.Disconnect();
return;
}
else
{
Console.WriteLine("Zalogowano użytkownika: " + login);
connection.SendMessage(CommandSet.AuthSuccess);
// przesyłamy referencje do danych które nie są znane bazie danych
user.Firstport = firstPort;
user.SecondPort = secondPort;
user.SetConnection(connection);
user.UpdateContactsList();
UserCollection.Add(user); // odnotowujemy że dany użytkownik stał się online
user.DoWork(connectionThread); // dalsza obsługa klienta
}
}
else
{
connection.Disconnect();
}
}