public async Task <IActionResult> Bancho( [FromHeader(Name = "osu-token")] string token, [FromHeader(Name = "User-Agent")] string userAgent ) { if (Request.Method == "GET" || userAgent != "osu!") { return(Default()); } Response.Headers["cho-protocol"] = Misc.BanchoProtocolVersion.ToString(); await using var ms = new MemoryStream(); await Request.Body.CopyToAsync(ms); ms.Position = 0; if (string.IsNullOrEmpty(token)) { var sw = Stopwatch.StartNew(); var req = Encoding.UTF8.GetString(ms.ToArray()).Split(new[] { "\n", "\r\n" }, StringSplitOptions.None); if (req.Length != 4) { return(NotFound()); } Response.Headers["cho-token"] = "chikatto::no-token"; var u = await Auth.Login(req[0], req[1]); var clientData = req[2].Split(":"); if (u is null) { return(SendPackets(new[] { await FastPackets.UserId(-1) // bad password })); } if (u.LastPong > new DateTimeOffset(DateTime.Now).ToUnixTimeSeconds() - 10) { return(SendPackets(new[] { await FastPackets.UserId(-1), // bad password await FastPackets.Notification("User already logged in") })); } u.LastPong = new DateTimeOffset(DateTime.Now).ToUnixTimeSeconds(); if (u.Spectating is not null) { await u.Spectating.RemoveSpectator(u); } if (u.Match is not null) { await u.Match.Leave(u); } foreach (var(_, us) in u.Spectators) { await u.RemoveSpectator(us); } var packets = new List <Packet> { await FastPackets.ProtocolVersion(), await FastPackets.UserId(u.Id), await FastPackets.MainMenuIcon(Global.Config.LogoIngame, Global.Config.LogoClickUrl), await FastPackets.Notification($"Welcome back!\r\nChikatto Build v{Misc.Version}"), await FastPackets.BanchoPrivileges(await u.GetBanchoPermissions() | BanchoPermissions.Supporter), await FastPackets.FriendList(u.Friends.Select(x => x.Key).ToList()), await FastPackets.BotPresence(), }; if (u.Restricted) { if ((u.User.Privileges & Privileges.Restricted) != 0) // account restricted { packets.Add(FastPackets.AccountRestricted); await u.Notify("Your account is currently in restricted mode"); } else // account banned { return(SendPackets(new[] { await FastPackets.UserId(-3) // ban client })); } } else if ((u.User.Privileges & Privileges.Verified) == 0) // user just registered { u.User.Privileges |= Privileges.Verified; await Db.Execute("UPDATE users SET priv = @priv WHERE id = @id", new { priv = u.User.Privileges, id = u.User.Id }); await u.SendMessage( $"Welcome to our server. \r\nType {Global.Config.CommandPrefix}help to see list of available commands.", Global.Bot); } if (u.User.Country.ToLower() == "xx") { var ip = (string)Request.Headers["X-Real-IP"]; u.User.Country = await IpApi.FetchLocation(ip); u.CountryCode = Misc.CountryCodes.ContainsKey(u.User.Country.ToUpper()) ? Misc.CountryCodes[u.User.Country.ToUpper()] : (byte)0; } token = Auth.CreateBanchoToken(u.Id, clientData); Response.Headers["cho-token"] = token; u.Token = token; u.Online = true; await Global.OnlineManager.AddUser(u); var users = await Global.OnlineManager.GetOnlineUsers(); foreach (var us in users) { packets.Add(await FastPackets.UserPresence(us)); } var channels = Global.Channels.Select(x => x.Value).Where(x => (x.Read & u.User.Privileges) != 0); foreach (var channel in channels) { if ((channel.Read & u.User.Privileges) != channel.Read || channel.IsTemp || channel.IsLobby) { continue; } if (channel.Default) { await channel.JoinUser(u); } else { u.WaitingPackets.Enqueue(await channel.GetInfoPacket()); } } packets.Add(FastPackets.ChannelInfoEnd); XConsole.Log($"{u} logged in (login took {sw.Elapsed.TotalMilliseconds}ms)", ConsoleColor.Green); return(SendPackets(packets)); } if (!token.StartsWith("chikatto:")) { return(Default()); } var user = Global.OnlineManager.GetByToken(token); if (user is null) { return(SendPackets(new[] { await FastPackets.Notification("Server has restarted"), await FastPackets.ServerRestart(0) })); } user.LastPong = new DateTimeOffset(DateTime.Now).ToUnixTimeSeconds(); var osuPackets = Packets.GetPackets(ms.ToArray()); foreach (var packet in osuPackets) { await packet.Handle(user); } var res = new List <Packet>(); while (!user.WaitingPackets.IsEmpty) { if (user.WaitingPackets.TryDequeue(out var packet)) { res.Add(packet); } } return(SendPackets(res)); }