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Implement Forge FML2 protocol (MC 1.13+) (#1184)

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Forge uses a different handshake scheme in FML2 protocol.
This handshake scheme uses LoginPluginRequest/Response packets.
This commit is contained in:
ORelio 2020-08-11 12:52:38 +02:00
parent aeac56890b
commit a28409043c
5 changed files with 346 additions and 91 deletions
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30
MinecraftClient/Protocol/Handlers/Protocol18.cs
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@ -169,7 +169,7 @@ namespace MinecraftClient.Protocol.Handlers
{
packetData.Clear();
int size = dataTypes.ReadNextVarIntRAW(socketWrapper); //Packet size
byte[] rawpacket = socketWrapper.ReadDataRAW(size);//Packet contents
byte[] rawpacket = socketWrapper.ReadDataRAW(size); //Packet contents
for (int i = 0; i < rawpacket.Length; i++)
packetData.Enqueue(rawpacket[i]);
@ -209,6 +209,13 @@ namespace MinecraftClient.Protocol.Handlers
if (protocolversion >= MC18Version)
compression_treshold = dataTypes.ReadNextVarInt(packetData);
break;
case 0x04:
int messageId = dataTypes.ReadNextVarInt(packetData);
string channel = dataTypes.ReadNextString(packetData);
List<byte> responseData = new List<byte>();
bool understood = pForge.HandleLoginPluginRequest(channel, packetData, ref responseData);
SendLoginPluginResponse(messageId, understood, responseData.ToArray());
return understood;
default:
return false; //Ignored packet
}
@ -1012,7 +1019,7 @@ namespace MinecraftClient.Protocol.Handlers
{
byte[] protocol_version = dataTypes.GetVarInt(protocolversion);
string server_address = pForge.GetServerAddress(handler.GetServerHost());
byte[] server_port = BitConverter.GetBytes((ushort)handler.GetServerPort()); Array.Reverse(server_port);
byte[] server_port = dataTypes.GetUShort((ushort)handler.GetServerPort());
byte[] next_state = dataTypes.GetVarInt(2);
byte[] handshake_packet = dataTypes.ConcatBytes(protocol_version, dataTypes.GetString(server_address), server_port, next_state);
@ -1445,6 +1452,25 @@ namespace MinecraftClient.Protocol.Handlers
catch (ObjectDisposedException) { return false; }
}
/// <summary>
/// Send a Login Plugin Response packet (0x02)
/// </summary>
/// <param name="messageId">Login Plugin Request message Id </param>
/// <param name="understood">TRUE if the request was understood</param>
/// <param name="data">Response to the request</param>
/// <returns>TRUE if successfully sent</returns>
public bool SendLoginPluginResponse(int messageId, bool understood, byte[] data)
{
try
{
SendPacket(0x02, dataTypes.ConcatBytes(dataTypes.GetVarInt(messageId), dataTypes.GetBool(understood), data));
return true;
}
catch (SocketException) { return false; }
catch (System.IO.IOException) { return false; }
catch (ObjectDisposedException) { return false; }
}
/// <summary>
/// Send an Interact Entity Packet to server
/// </summary>