public EncryptionResponse(CryptoMC crypto)
{
this.SharedKey = crypto.SharedKeyEncrypted;
this.Test = crypto.TestEncrypted;
}
static MinecraftServer()
{
RsaBytes = CryptoMC.Init();
PingReplyMessage = "Loading...";
}
/// <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
}
