private Task DispatchPacket(EncryptionResponse packet)
{
var requestGrain = GrainFactory.GetGrain <ILoginFlow>(this.GetPrimaryKey());
requestGrain.DispatchPacket(packet).Ignore();
return(Task.CompletedTask);
}
private Task DispatchLoginPackets(UncompressedPacket packet)
{
var br = new SpanReader(packet.Data);
Task task;
switch (packet.PacketId)
{
// Login Start
case 0x00:
task = DispatchPacket(LoginStart.Deserialize(ref br));
break;
// Encryption Response
case 0x01:
task = DispatchPacket(EncryptionResponse.Deserialize(ref br));
break;
default:
throw new InvalidDataException($"Unrecognizable packet id: 0x{packet.PacketId:X2}.");
}
if (!br.IsCosumed)
{
throw new InvalidDataException($"Packet data is not fully consumed.");
}
return(task);
}
public async Task DispatchPacket(EncryptionResponse packet)
{
var settingsGrain = GrainFactory.GetGrain <IServerSettings>(0);
var settings = await settingsGrain.GetSettings();
// TODO auth and compression
var packetRouter = GrainFactory.GetGrain <IPacketRouter>(this.GetPrimaryKey());
var userName = await packetRouter.GetUserName();
// mojang request url
var mojangURL = String.Format("https://sessionserver.mojang.com/session/minecraft/hasJoined?username={0}&serverId={1}&ip={2}", userName, "", settings.ServerIp);
// success
var user = await GrainFactory.GetGrain <INonAuthenticatedUser>(userName).GetUser();
var world = await user.GetWorld();
var gameSession = GrainFactory.GetGrain <IGameSession>(world.GetPrimaryKeyString());
var uuid = user.GetPrimaryKey();
await SendLoginSuccess(userName, uuid);
await user.SetClientPacketSink(GrainFactory.GetGrain <IClientboundPacketSink>(this.GetPrimaryKey()));
await user.SetPacketRouter(packetRouter);
var game = GrainFactory.GetGrain <IGameSession>(world.GetPrimaryKeyString());
await game.JoinGame(user);
}
/// <summary>
/// Server side encryption
/// </summary>
public CryptoMC(Stream baseStream, EncryptionResponse resp)
{
this.BaseStream = baseStream;
Pkcs1Encoding padding = new Pkcs1Encoding(new RsaEngine());
padding.Init(false, keyParameters);
SharedKey = padding.ProcessBlock(resp.SharedKey, 0, resp.SharedKey.Length);
InitCiphers();
}
public void SendEncryptionResponse(ClientConnectionInfo connection, EncryptionResponseCode responseCode, byte[] key, byte[] iv)
{
var handShakeResponse = new EncryptionResponse
{
ResponseCode = responseCode,
AESKey = key,
IV = iv
};
if (responseCode == EncryptionResponseCode.OK)
{
RSAEncryptedSend(connection, handShakeResponse.Create(), ChannelID.Handshaking, true);
}
else
{
DefaultSend(connection, handShakeResponse.Create(), ChannelID.Handshaking, true);
}
}
private void OnEncryptionCompleted(string result, EncryptionResponse response)
{
switch (response)
{
case EncryptionResponse.Success:
FormsContainer.MainForm.HideTip();
ResultTextBox.Text = result;
break;
case EncryptionResponse.PasswordIsEmpty:
FormsContainer.MainForm.ShowTip("Password is empty");
break;
case EncryptionResponse.SourceIsEmpty:
FormsContainer.MainForm.ShowTip("Source is empty");
break;
case EncryptionResponse.SaltIsEmpty:
FormsContainer.MainForm.ShowTip("Salt is empty");
break;
case EncryptionResponse.SaltIsIncorrect:
FormsContainer.MainForm.ShowTip("Salt is incorrect");
break;
case EncryptionResponse.SaltIsLessThan8Bytes:
FormsContainer.MainForm.ShowTip("Salt less than 8 bytes");
break;
case EncryptionResponse.SaltIsMoreThan32Bytes:
FormsContainer.MainForm.ShowTip("Salt more than 32 bytes");
break;
case EncryptionResponse.DecryptionFail:
FormsContainer.MainForm.ShowTip("Incorrect password or source text");
break;
}
}
/// <summary>
/// Return false if disconnect/finished
/// </summary>
void RunClientHandshake()
{
clientThread.WatchdogTick = DateTime.Now;
//Read Handshake
var hs = PacketReader.ReadFirstPackage(clientStream);
if (hs == null)
{
//Old status packet
LegacyStatus.SendStatus(clientStream);
Phase = Phases.FinalClose;
return;
}
var h = new Handshake(hs);
Debug.FromClient(this, h);
clientThread.State = "Handshake Received " + h;
ClientVersion = h.Version;
if (h.State == HandshakeState.Status)
{
RunStatusPing(h);
return;
}
if (h.State == HandshakeState.None)
{
Close("Invalid handshake state: " + h.State);
return;
}
if (h.State != HandshakeState.Login)
{
Close("Invalid handshake state: " + h.State);
return;
}
#if DEBUG
if (h.Version >= ProtocolVersion.next)
{
throw new InvalidDataException("new version: " + h.Version);
}
#endif
if (h.Version > MinecraftServer.BackendVersion)
{
clientThread.State = "Handshake too high version";
Close("We are still running " + MinecraftServer.BackendVersion.ToText() + " we are so very sorry about that");
return;
}
if (h.Version < MinecraftServer.FrontendVersion)
{
clientThread.State = "Handshake too low version";
Close("Upgrade your client to " + MinecraftServer.FrontendVersion.ToText());
return;
}
//Login
var l = new LoginStart(PacketReader.ReadHandshake(clientStream));
clientThread.State = "LoginStart Received " + l.Name;
unverifiedUsername = l.Name;
#if DEBUGx
var names = new string[] { "travelcraft2012", "nuxas", "drjanitor" };
unverifiedUsername = names[logincount++ % names.Length];
#endif
if (unverifiedUsername.Length == 0 || unverifiedUsername.Length > 16)
{
clientThread.State = "Handshake wrong username length";
Close("Bad username");
Console.WriteLine("Wrong username length: " + unverifiedUsername.Length);
return;
}
//Set Compression
var compression = new SetCompression();
SendToClientInternal(compression);
maxUncompressed = compression.MaxSize;
//Send encryption request
clientThread.State = "Handshake: Sending encryption request";
//Initiate ID
var r = new Random();
ID = new byte[8];
r.NextBytes(ID);
SendToClientInternal(new EncryptionRequest(Authentication.McHex(ID), MinecraftServer.RsaBytes));
clientThread.State = "Handshake: Sent encryption request, reading response";
//Read enc response
int erSize;
var erBuffer = PacketReader.Read(clientStream, out erSize);
if (erSize != 0)
{
erBuffer = Compression.Decompress(erBuffer, erSize);
}
var er = new EncryptionResponse(erBuffer);
clientThread.State = "Handshake: Got enc resp";
CryptoMC cryptoStream = new CryptoMC(clientStream, er);
//Verify user
clientThread.WatchdogTick = DateTime.Now;
clientThread.State = "Handshake: loading proxy data";
Settings = LoadProxyPlayer(unverifiedUsername);
if (IPAddress.IsLoopback(RemoteEndPoint.Address))
{
MinecraftUsername = unverifiedUsername;
Log.WritePlayer(this, "Succesful login from (local) " + RemoteEndPoint);
}
else
{
clientThread.State = "Handshake: Verifying login credentials";
string error = Authentication.VerifyUserLogin(unverifiedUsername, cryptoStream.SharedKey, ID);
if (error != null)
{
//Unauthorized
Log.WriteAuthFail(unverifiedUsername, RemoteEndPoint, error);
Close("Mojang says " + error);
return;
}
else
{
MinecraftUsername = unverifiedUsername;
Log.WritePlayer(this, "Login from " + RemoteEndPoint + " " + Country);
}
}
clientThread.State = "Handshake: Logged in";
//Get UUID
try
{
Settings.UUID = UsernameUUID.GetUUID(MinecraftUsername);
//Saved further down
Debug.WriteLine("Real UUID for " + MinecraftUsername + " is " + Settings.UUID);
}
catch (Exception)
{
Debug.WriteLine("Failed to get UUID for MinecraftName " + MinecraftUsername);
}
clientThread.WatchdogTick = DateTime.Now;
MineProxy.Inbox.Status(this);
//start encryption
clientStream = cryptoStream;
SendToClientInternal(new LoginSuccess(Settings.UUID, MinecraftUsername));
clientThread.User = MinecraftUsername;
clientThread.State = "Logged in";
EntityID = freeEID;
//Math.Abs(unverifiedUsername.GetHashCode());
freeEID += 5000;
//Login reply to client
JoinGame lr = new JoinGame();
lr.ClientVersion = 0;
lr.Difficulty = 0;
lr.Dimension = 0;
lr.EntityID = EntityID;
lr.MaxPlayers = (byte)MinecraftServer.PlayerListSlots;
lr.GameMode = 0;
SendToClient(lr);
Phase = Phases.Gaming;
Queue = new SendQueue(this);
PlayerList.LoginPlayer(this);
SaveProxyPlayer();
string name = h.Host.ToLowerInvariant().Split('.')[0];
if (name == "con")
{
SetWorld(World.Construct);
}
else
{
SetWorld(World.Main);
}
//Handshake complete
}
/// <summary>
/// Return false if disconnect/finished
/// </summary>
void RunClientHandshake()
{
clientThread.WatchdogTick = DateTime.Now;
//Read Handshake
var hs = PacketReader.ReadFirstPackage(clientStream);
if (hs == null)
{
//Old status packet
LegacyStatus.SendStatus(clientStream);
Phase = Phases.FinalClose;
return;
}
var h = new Handshake(hs);
Debug.FromClient(this, h);
clientThread.State = "Handshake Received " + h;
ClientVersion = h.Version;
if (h.State == HandshakeState.Status)
{
RunStatusPing(h);
return;
}
if (h.State == HandshakeState.None)
{
Close("Invalid handshake state: " + h.State);
return;
}
if (h.State != HandshakeState.Login)
{
Close("Invalid handshake state: " + h.State);
return;
}
#if DEBUG
if (h.Version >= ProtocolVersion.next)
{
throw new InvalidDataException("new version: " + h.Version);
}
#endif
if (h.Version > MinecraftServer.BackendVersion)
{
clientThread.State = "Handshake too high version";
Close("We are still running " + MinecraftServer.BackendVersion.ToText() + " we are so very sorry about that");
return;
}
if (h.Version < MinecraftServer.FrontendVersion)
{
clientThread.State = "Handshake too low version";
Close("Upgrade your client to " + MinecraftServer.FrontendVersion.ToText());
return;
}
clientThread.WatchdogTick = DateTime.Now;
//Login
var l = new LoginStart(PacketReader.ReadHandshake(clientStream));
Debug.FromClient(this, l);
clientThread.State = "LoginStart Received " + l.Name;
unverifiedUsername = l.Name;
if (unverifiedUsername.Length == 0 || unverifiedUsername.Length > 16)
{
clientThread.State = "Handshake wrong username length";
Close("Bad username");
Console.WriteLine("Wrong username length: " + unverifiedUsername.Length);
return;
}
//Set Compression
var compression = new SetCompression();
SendToClientInternal(compression);
maxUncompressed = compression.MaxSize;
//Send encryption request
clientThread.State = "Handshake: Sending encryption request";
//Initiate ID
var r = new Random();
ID = new byte[8];
r.NextBytes(ID);
SendToClientInternal(new EncryptionRequest(Authentication.McHex(ID), MinecraftServer.RsaBytes));
clientThread.State = "Handshake: Sent encryption request, reading response";
//Read enc response
int erSize;
var erBuffer = PacketReader.Read(clientStream, out erSize);
if (erSize != 0)
{
erBuffer = Compression.Decompress(erBuffer, erSize);
}
var er = new EncryptionResponse(erBuffer);
Debug.FromClient(this, er);
clientThread.State = "Handshake: Got enc resp";
CryptoMC cryptoStream = new CryptoMC(clientStream, er);
//Verify user
clientThread.State = "Handshake: loading proxy data";
Settings = LoadProxyPlayer(unverifiedUsername);
clientThread.State = "Handshake: Verifying login credentials";
var auth = Authentication.VerifyUserLogin(unverifiedUsername, cryptoStream.SharedKey, ID);
#warning From here we now need to take care of the id in the response.
if (auth == null)
{
//Unauthorized
Log.WriteAuthFail(unverifiedUsername, RemoteEndPoint, "");
Close("Mojang says no");
return;
}
else
{
MinecraftUsername = unverifiedUsername;
Log.WritePlayer(this, "Login from " + RemoteEndPoint + " " + Country);
}
clientThread.State = "Handshake: Logged in";
//Get UUID
Settings.UUID = auth.id;
clientThread.WatchdogTick = DateTime.Now;
MineProxy.Inbox.Status(this);
//start encryption
clientStream = cryptoStream;
SendToClientInternal(new LoginSuccess(Settings.UUID, MinecraftUsername));
clientThread.User = MinecraftUsername;
clientThread.State = "Logged in";
EntityID = freeEID;
//Math.Abs(unverifiedUsername.GetHashCode());
freeEID += 5000;
//Login reply to client
//No longer, send the vanilla server Login reply instead.
Phase = Phases.Gaming;
Queue = new SendQueue(this);
PlayerList.LoginPlayer(this);
SaveProxyPlayer();
string name = h.Host.ToLowerInvariant().Split('.')[0];
if (World.VanillaWorlds.ContainsKey(name))
{
SetWorld(World.VanillaWorlds[name]);
}
else
{
SetWorld(World.Main);
}
//Handshake complete
}
public virtual void OnEncryptionResponse(EncryptionResponse packet)
{
}
private void InvokeEncryptionResponse(EncryptionResponse packet)
{
packetListener.OnEncryptionResponse(packet);
}
