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Diffstat (limited to 'source/Protocol/Protocol17x.cpp')
| -rw-r--r-- | source/Protocol/Protocol17x.cpp | 541 |
1 files changed, 541 insertions, 0 deletions
diff --git a/source/Protocol/Protocol17x.cpp b/source/Protocol/Protocol17x.cpp new file mode 100644 index 000000000..b3e4540c7 --- /dev/null +++ b/source/Protocol/Protocol17x.cpp @@ -0,0 +1,541 @@ + +// Protocol17x.cpp + +/* +Implements the 1.7.x protocol classes: + - cProtocol172 + - release 1.7.2 protocol (#4) +(others may be added later in the future for the 1.7 release series) +*/ + +#include "Globals.h" +#include "Protocol17x.h" +#include "../ClientHandle.h" +#include "../Root.h" +#include "../Server.h" +#include "../Entities/Player.h" + + + + + +#define HANDLE_PACKET_READ(Proc, Type, Var) \ + Type Var; \ + m_ReceivedData.Proc(Var); + + + + + +cProtocol172::cProtocol172(cClientHandle * a_Client, const AString & a_ServerAddress, UInt16 a_ServerPort, UInt32 a_State) : + super(a_Client), + m_ServerAddress(a_ServerAddress), + m_ServerPort(a_ServerPort), + m_State(a_State), + m_ReceivedData(32 KiB), + m_IsEncrypted(false) +{ +} + + + + + +void cProtocol172::DataReceived(const char * a_Data, int a_Size) +{ + if (m_IsEncrypted) + { + byte Decrypted[512]; + while (a_Size > 0) + { + int NumBytes = (a_Size > sizeof(Decrypted)) ? sizeof(Decrypted) : a_Size; + m_Decryptor.ProcessData(Decrypted, (byte *)a_Data, NumBytes); + AddReceivedData((const char *)Decrypted, NumBytes); + a_Size -= NumBytes; + a_Data += NumBytes; + } + } + else + { + AddReceivedData(a_Data, a_Size); + } +} + + + + +void cProtocol172::AddReceivedData(const char * a_Data, int a_Size) +{ + if (!m_ReceivedData.Write(a_Data, a_Size)) + { + // Too much data in the incoming queue, report to caller: + m_Client->PacketBufferFull(); + return; + } + + // Handle all complete packets: + while (true) + { + UInt32 PacketLen; + if (!m_ReceivedData.ReadVarInt(PacketLen)) + { + // Not enough data + return; + } + if (!m_ReceivedData.CanReadBytes(PacketLen)) + { + // The full packet hasn't been received yet + return; + } + UInt32 PacketType; + UInt32 Mark1 = m_ReceivedData.GetReadableSpace(); + if (!m_ReceivedData.ReadVarInt(PacketType)) + { + // Not enough data + return; + } + UInt32 NumBytesRead = Mark1 - m_ReceivedData.GetReadableSpace(); + HandlePacket(PacketType, PacketLen - NumBytesRead); + + if (Mark1 - m_ReceivedData.GetReadableSpace() > PacketLen) + { + // Read more than packet length, report as error + m_Client->PacketError(PacketType); + } + + // Go to packet end in any case: + m_ReceivedData.ResetRead(); + m_ReceivedData.SkipRead(PacketLen); + m_ReceivedData.CommitRead(); + } // while (true) +} + + + + +void cProtocol172::HandlePacket(UInt32 a_PacketType, UInt32 a_RemainingBytes) +{ + switch (m_State) + { + case 1: + { + // Status + switch (a_PacketType) + { + case 0x00: HandlePacketStatusRequest(a_RemainingBytes); return; + case 0x01: HandlePacketStatusPing (a_RemainingBytes); return; + } + break; + } + + case 2: + { + // Login + switch (a_PacketType) + { + case 0x00: HandlePacketLoginStart(a_RemainingBytes); return; + case 0x01: HandlePacketLoginEncryptionResponse(a_RemainingBytes); return; + } + break; + } + + case 3: + { + // Game + switch (a_PacketType) + { + case 0x00: HandlePacketKeepAlive (a_RemainingBytes); break; + case 0x01: HandlePacketChatMessage (a_RemainingBytes); break; + case 0x02: HandlePacketUseEntity (a_RemainingBytes); break; + case 0x03: HandlePacketPlayer (a_RemainingBytes); break; + case 0x04: HandlePacketPlayerPos (a_RemainingBytes); break; + case 0x05: HandlePacketPlayerLook (a_RemainingBytes); break; + case 0x06: HandlePacketPlayerPosLook (a_RemainingBytes); break; + case 0x07: HandlePacketBlockDig (a_RemainingBytes); break; + case 0x08: HandlePacketBlockPlace (a_RemainingBytes); break; + case 0x09: HandlePacketSlotSelect (a_RemainingBytes); break; + case 0x0a: HandlePacketAnimation (a_RemainingBytes); break; + case 0x0b: HandlePacketEntityAction (a_RemainingBytes); break; + case 0x0c: HandlePacketSteerVehicle (a_RemainingBytes); break; + case 0x0d: HandlePacketWindowClose (a_RemainingBytes); break; + case 0x0e: HandlePacketWindowClick (a_RemainingBytes); break; + case 0x0f: // Confirm transaction - not used in MCS + case 0x10: HandlePacketCreativeInventoryAction(a_RemainingBytes); break; + case 0x12: HandlePacketUpdateSign (a_RemainingBytes); break; + case 0x13: HandlePacketPlayerAbilities (a_RemainingBytes); break; + case 0x14: HandlePacketTabComplete (a_RemainingBytes); break; + case 0x15: HandlePacketClientSettings (a_RemainingBytes); break; + case 0x16: HandlePacketClientStatus (a_RemainingBytes); break; + case 0x17: HandlePacketPluginMessage (a_RemainingBytes); break; + } + break; + } + } // switch (m_State) + + // Unknown packet type, report to the client: + m_Client->PacketUnknown(a_PacketType); + m_ReceivedData.SkipRead(a_RemainingBytes); + m_ReceivedData.CommitRead(); +} + + + + + +void cProtocol172::HandlePacketStatusPing(UInt32 a_RemainingBytes) +{ + ASSERT(a_RemainingBytes == 8); + if (a_RemainingBytes != 8) + { + m_Client->PacketError(0x01); + m_ReceivedData.SkipRead(a_RemainingBytes); + m_ReceivedData.CommitRead(); + return; + } + Int64 Timestamp; + m_ReceivedData.ReadBEInt64(Timestamp); + m_ReceivedData.CommitRead(); + + cByteBuffer Packet(18); + Packet.WriteVarInt(0x01); + Packet.WriteBEInt64(Timestamp); + WritePacket(Packet); +} + + + + + +void cProtocol172::HandlePacketStatusRequest(UInt32 a_RemainingBytes) +{ + // No more bytes in this packet + ASSERT(a_RemainingBytes == 0); + m_ReceivedData.CommitRead(); + + // Send the response: + AString Response = "{\"version\":{\"name\":\"1.7.2\",\"protocol\":4},\"players\":{"; + AppendPrintf(Response, "\"max\":%u,\"online\":%u,\"sample\":[]},", + cRoot::Get()->GetServer()->GetMaxPlayers(), + cRoot::Get()->GetServer()->GetNumPlayers() + ); + AppendPrintf(Response, "\"description\":{\"text\":\"%s\"}", + cRoot::Get()->GetServer()->GetDescription().c_str() + ); + Response.append("}"); + + cByteBuffer Packet(Response.size() + 10); + Packet.WriteVarInt(0x00); // Response packet + Packet.WriteVarUTF8String(Response); + WritePacket(Packet); +} + + + + + +void cProtocol172::HandlePacketLoginEncryptionResponse(UInt32 a_RemainingBytes) +{ + // TODO: Add protocol encryption +} + + + + + +void cProtocol172::HandlePacketLoginStart(UInt32 a_RemainingBytes) +{ + AString Username; + m_ReceivedData.ReadVarUTF8String(Username); + + // TODO: Protocol encryption should be set up here if not localhost / auth + + // Send login success: + cByteBuffer Packet(Username.size() + 30); + Packet.WriteVarInt(0x02); // Login success packet + Packet.WriteVarUTF8String(Printf("%d", m_Client->GetUniqueID())); // TODO: UUID + Packet.WriteVarUTF8String(Username); + WritePacket(Packet); + + m_Client->HandleLogin(4, Username); +} + + + + + +void cProtocol172::HandlePacketAnimation(UInt32 a_RemainingBytes) +{ + HANDLE_PACKET_READ(ReadBEInt, int, EntityID); + HANDLE_PACKET_READ(ReadByte, Byte, Animation); + m_Client->HandleAnimation(Animation); +} + + + + + +void cProtocol172::HandlePacketBlockDig(UInt32 a_RemainingBytes) +{ + HANDLE_PACKET_READ(ReadByte, Byte, Status); + HANDLE_PACKET_READ(ReadBEInt, int, BlockX); + HANDLE_PACKET_READ(ReadByte, Byte, BlockY); + HANDLE_PACKET_READ(ReadBEInt, int, BlockZ); + HANDLE_PACKET_READ(ReadByte, Byte, Face); + m_Client->HandleLeftClick(BlockX, BlockY, BlockZ, Face, Status); +} + + + + + +void cProtocol172::HandlePacketBlockPlace(UInt32 a_RemainingBytes) +{ + HANDLE_PACKET_READ(ReadBEInt, int, BlockX); + HANDLE_PACKET_READ(ReadByte, Byte, BlockY); + HANDLE_PACKET_READ(ReadBEInt, int, BlockZ); + HANDLE_PACKET_READ(ReadByte, Byte, Face); + HANDLE_PACKET_READ(ReadByte, Byte, CursorX); + HANDLE_PACKET_READ(ReadByte, Byte, CursorY); + HANDLE_PACKET_READ(ReadByte, Byte, CursorZ); + m_Client->HandleRightClick(BlockX, BlockY, BlockZ, Face, CursorX, CursorY, CursorZ, m_Client->GetPlayer()->GetEquippedItem()); +} + + + + + +void cProtocol172::HandlePacketChatMessage(UInt32 a_RemainingBytes) +{ + HANDLE_PACKET_READ(ReadVarUTF8String, AString, Message); + m_Client->HandleChat(Message); +} + + + + + +void cProtocol172::HandlePacketClientSettings(UInt32 a_RemainingBytes) +{ + HANDLE_PACKET_READ(ReadVarUTF8String, AString, Locale); + HANDLE_PACKET_READ(ReadByte, Byte, ViewDistance); + HANDLE_PACKET_READ(ReadByte, Byte, ChatFlags); + HANDLE_PACKET_READ(ReadByte, Byte, Unused); + HANDLE_PACKET_READ(ReadByte, Byte, Difficulty); + HANDLE_PACKET_READ(ReadByte, Byte, ShowCape); + // TODO +} + + + + + +void cProtocol172::HandlePacketClientStatus(UInt32 a_RemainingBytes) +{ + // TODO +} + + + + + +void cProtocol172::HandlePacketCreativeInventoryAction(UInt32 a_RemainingBytes) +{ + // TODO +} + + + + + +void cProtocol172::HandlePacketEntityAction(UInt32 a_RemainingBytes) +{ + // TODO +} + + + + + +void cProtocol172::HandlePacketKeepAlive(UInt32 a_RemainingBytes) +{ + // TODO +} + + + + + +void cProtocol172::HandlePacketPlayer(UInt32 a_RemainingBytes) +{ + // TODO +} + + + + + +void cProtocol172::HandlePacketPlayerAbilities(UInt32 a_RemainingBytes) +{ + // TODO +} + + + + + +void cProtocol172::HandlePacketPlayerLook(UInt32 a_RemainingBytes) +{ + // TODO +} + + + + + +void cProtocol172::HandlePacketPlayerPos(UInt32 a_RemainingBytes) +{ + // TODO +} + + + + + +void cProtocol172::HandlePacketPlayerPosLook(UInt32 a_RemainingBytes) +{ + // TODO +} + + + + + +void cProtocol172::HandlePacketPluginMessage(UInt32 a_RemainingBytes) +{ + // TODO +} + + + + + +void cProtocol172::HandlePacketSlotSelect(UInt32 a_RemainingBytes) +{ + // TODO +} + + + + + +void cProtocol172::HandlePacketSteerVehicle(UInt32 a_RemainingBytes) +{ + // TODO +} + + + + + +void cProtocol172::HandlePacketTabComplete(UInt32 a_RemainingBytes) +{ + // TODO +} + + + + + +void cProtocol172::HandlePacketUpdateSign(UInt32 a_RemainingBytes) +{ + // TODO +} + + + + + +void cProtocol172::HandlePacketUseEntity(UInt32 a_RemainingBytes) +{ + // TODO +} + + + + + +void cProtocol172::HandlePacketWindowClick(UInt32 a_RemainingBytes) +{ + // TODO +} + + + + + +void cProtocol172::HandlePacketWindowClose(UInt32 a_RemainingBytes) +{ + // TODO +} + + + + + +void cProtocol172::WritePacket(cByteBuffer & a_Packet) +{ + cCSLock Lock(m_CSPacket); + AString Pkt; + a_Packet.ReadAll(Pkt); + WriteVarInt(Pkt.size()); + SendData(Pkt.data(), Pkt.size()); + Flush(); +} + + + + + +void cProtocol172::SendData(const char * a_Data, int a_Size) +{ + m_DataToSend.append(a_Data, a_Size); +} + + + + + +void cProtocol172::Flush(void) +{ + ASSERT(m_CSPacket.IsLockedByCurrentThread()); // Did all packets lock the CS properly? + + if (m_DataToSend.empty()) + { + LOGD("Flushing empty"); + return; + } + const char * a_Data = m_DataToSend.data(); + int a_Size = m_DataToSend.size(); + if (m_IsEncrypted) + { + byte Encrypted[8192]; // Larger buffer, we may be sending lots of data (chunks) + while (a_Size > 0) + { + int NumBytes = (a_Size > sizeof(Encrypted)) ? sizeof(Encrypted) : a_Size; + m_Encryptor.ProcessData(Encrypted, (byte *)a_Data, NumBytes); + m_Client->SendData((const char *)Encrypted, NumBytes); + a_Size -= NumBytes; + a_Data += NumBytes; + } + } + else + { + m_Client->SendData(a_Data, a_Size); + } + m_DataToSend.clear(); +} + + + + + |