/// <summary>
/// Refreshes the client's login status
/// </summary>
public void RefreshLoginStatus()
{
Debug.Log("Checking user login..");
Debug.Log($"Client auth server token: {MojangAuthentication.GetClientToken()}");
SetAuthImage(AuthImageStatus.LOADING);
StartCoroutine(MojangAuthentication.GetLoginStatus(HandleLoginResponse));
}
/// <summary>
/// Logs the user in using the filled-in username and password
/// </summary>
public void LoginUser()
{
string username = EmailInput.text;
string password = PasswordInput.text;
// check that username and password are filled out
if (string.IsNullOrEmpty(username) || string.IsNullOrEmpty(password))
{
return;
}
SetAuthImage(AuthImageStatus.LOADING);
StartCoroutine(MojangAuthentication.Login(username, password, HandleLoginResponse));
}
/// <summary>
/// Gets the next packet from the server
/// </summary>
/// <returns></returns>
public PacketData ReadNextPacket()
{
int packetId;
byte[] payload;
lock (_streamReadLock)
{
int length = VarInt.ReadNext(ReadBytes);
List <byte> buffer = new List <byte>();
// check if data is compressed
if (_compressionThreshold >= 0)
{
int dataLength = VarInt.ReadNext(ReadBytes);
length -= VarInt.GetBytes(dataLength).Length; // remove size of data length from rest of packet length
if (dataLength != 0)
{
byte[] compressedBuffer = ReadBytes(length);
buffer.AddRange(ZlibStream.UncompressBuffer(compressedBuffer));
}
else
{
buffer.AddRange(ReadBytes(length));
}
}
else
{
buffer.AddRange(ReadBytes(length));
}
packetId = VarInt.ReadNext(buffer);
payload = buffer.ToArray();
}
// handles some stuff during login phase
if (State == ProtocolState.LOGIN)
{
// handle compression packet
if (packetId == (int)ClientboundIDs.LOGIN_SET_COMPRESSION)
{
_compressionThreshold = VarInt.ReadNext(new List <byte>(payload));
return(ReadNextPacket());
}
// handle protocol encryption packet
if (packetId == (int)ClientboundIDs.LOGIN_ENCRYPTION_REQUEST)
{
var encRequestPkt = new EncryptionRequestPacket()
{
Payload = payload
};
var aesSecret = CryptoHandler.GenerateSharedSecret();
var authHash = CryptoHandler.SHAHash(Encoding.ASCII.GetBytes(encRequestPkt.ServerID).Concat(aesSecret, encRequestPkt.PublicKey));
Debug.Log($"Sending hash to Mojang servers: {authHash}");
// check session with mojang
if (!MojangAuthentication.JoinServer(authHash))
{
throw new UnityException("Invalid session. (Try restarting game or relogging into Minecraft account)");
}
// use pub key to encrypt shared secret
var rsaProvider = CryptoHandler.DecodeRSAPublicKey(encRequestPkt.PublicKey);
byte[] encSecret = rsaProvider.Encrypt(aesSecret, false);
byte[] encToken = rsaProvider.Encrypt(encRequestPkt.VerifyToken, false);
// respond to server with private key
var responsePkt = new EncryptionResponsePacket()
{
SharedSecret = encSecret,
VerifyToken = encToken
};
WritePacket(responsePkt);
// enable aes encryption
_aesStream = new AesStream(Client.GetStream(), aesSecret);
_encrypted = true;
// read the next packet
return(ReadNextPacket());
}
}
return(new PacketData
{
ID = packetId,
Payload = payload
});
}
