public static User Connect(string name, string password, AlebClient client)
{
if (!Validation.ValidateUsername(name))
{
return(null);
}
if (!Validation.ValidatePassword(password))
{
return(null);
}
User user = Pool.FirstOrDefault(i => i?.Name == name);
if (user == null)
{
user = new User(name, password);
Pool.Add(user);
}
else if (user.Password != password)
{
user = null;
}
if (user != null)
{
user.Client = client;
}
return(user);
}
static void Main(string[] args)
{
AlebClient.LogCommunication = true;
string bind = Protocol.Localhost;
if (args.Length == 2 && args[0] == "--bind")
{
bind = args[1];
}
else if (args.Length != 0)
{
Console.Error.WriteLine("Invalid arguments.");
return;
}
TcpListener server = new TcpListener(
IPAddress.TryParse(bind, out IPAddress ip)
? ip
: Dns.GetHostEntry(bind).AddressList.First(i => i.AddressFamily == AddressFamily.InterNetwork),
Protocol.Port
);
try {
server.Start();
} catch {
Console.Error.WriteLine("Failed to start server! Is the port already in use?");
return;
}
Console.WriteLine($"Aleb Server started at {server.LocalEndpoint}");
while (true)
{
AlebClient client = new AlebClient(server.AcceptTcpClient());
Console.WriteLine($"Connection from {client.Address}");
client.MessageReceived += Login;
client.Disconnected += Disconnect;
client.Run();
client.Send("Version", Protocol.Version);
client.Flush();
}
}
static void Login(AlebClient sender, Message msg)
{
if (msg.Command != "Login")
{
return;
}
User user = User.Connect(msg.Args[0], msg.Args[1], sender);
sender.Send("LoginResult", user?.State.ToString() ?? "null");
if (user != null)
{
sender.MessageReceived -= Login;
sender.Disconnected -= Disconnect;
Console.WriteLine($"{user.Name} logged in from {sender.Address}");
}
sender.Flush();
}
public static async Task <ConnectStatus> Connect(string host)
{
TcpClient tcp = null;
try {
tcp = new TcpClient();
await tcp.ConnectAsync(host ?? Protocol.Localhost, Protocol.Port);
} catch {
tcp?.Dispose();
return(ConnectStatus.Failed);
}
AlebClient.LogCommunication = true;
Server = new AlebClient(tcp);
Server.MessageReceived += Received;
Server.Disconnected += _ => Disconnected?.Invoke();
Server.Name = "Server";
Task <Message> VersionTask = Register("Version");
Server.Run();
await VersionTask;
if (Convert.ToInt32((await VersionTask).Args[0]) != Protocol.Version)
{
Server.Dispose();
Server = null;
return(ConnectStatus.VersionMismatch);
}
return(ConnectStatus.Success);
}
static void Disconnect(AlebClient sender)
=> Console.WriteLine($"{sender.Address} disconnected without logging in");