// 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" #include "../World.h" #include "ChunkDataSerializer.h" #include "../Entities/Pickup.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::SendAttachEntity(const cEntity & a_Entity, const cEntity * a_Vehicle) { cByteBuffer Packet(20); Packet.WriteVarInt(0x1b); // Attach Entity packet Packet.WriteBEInt(a_Entity.GetUniqueID()); Packet.WriteBEInt((a_Vehicle != NULL) ? a_Vehicle->GetUniqueID() : 0); Packet.WriteBool(false); WritePacket(Packet); } void cProtocol172::SendBlockAction(int a_BlockX, int a_BlockY, int a_BlockZ, char a_Byte1, char a_Byte2, BLOCKTYPE a_BlockType) { cByteBuffer Packet(30); Packet.WriteVarInt(0x24); // Block Action packet Packet.WriteBEInt(a_BlockX); Packet.WriteBEShort(a_BlockY); Packet.WriteBEInt(a_BlockZ); Packet.WriteChar(a_Byte1); Packet.WriteChar(a_Byte2); Packet.WriteVarInt(a_BlockType); WritePacket(Packet); } void cProtocol172::SendBlockBreakAnim (int a_EntityID, int a_BlockX, int a_BlockY, int a_BlockZ, char a_Stage) { cByteBuffer Packet(20); Packet.WriteVarInt(0x24); // Block Action packet Packet.WriteBEInt(a_EntityID); Packet.WriteBEInt(a_BlockX); Packet.WriteBEInt(a_BlockY); Packet.WriteBEInt(a_BlockZ); Packet.WriteChar(a_Stage); WritePacket(Packet); } void cProtocol172::SendBlockChange(int a_BlockX, int a_BlockY, int a_BlockZ, BLOCKTYPE a_BlockType, NIBBLETYPE a_BlockMeta) { cByteBuffer Packet(20); Packet.WriteVarInt(0x23); // Block Change packet Packet.WriteBEInt(a_BlockX); Packet.WriteByte(a_BlockY); Packet.WriteBEInt(a_BlockZ); Packet.WriteVarInt(a_BlockType); Packet.WriteByte(a_BlockMeta); WritePacket(Packet); } void cProtocol172::SendBlockChanges(int a_ChunkX, int a_ChunkZ, const sSetBlockVector & a_Changes) { cByteBuffer Packet(20 + a_Changes.size() * 4); Packet.WriteVarInt(0x22); // Multi Block Change packet Packet.WriteBEInt(a_ChunkX); Packet.WriteBEInt(a_ChunkZ); Packet.WriteBEShort((short)a_Changes.size()); Packet.WriteBEInt(a_Changes.size() * 4); for (sSetBlockVector::const_iterator itr = a_Changes.begin(), end = a_Changes.end(); itr != end; ++itr) { unsigned int Coords = itr->y | (itr->z << 8) | (itr->x << 12); unsigned int Blocks = itr->BlockMeta | (itr->BlockType << 4); Packet.WriteBEInt((Coords << 16) | Blocks); } // for itr - a_Changes[] WritePacket(Packet); } void cProtocol172::SendChat(const AString & a_Message) { AString Message = Printf("{\"text\":\"%s\"}", EscapeString(a_Message).c_str()); cByteBuffer Packet(20 + Message.size()); Packet.WriteVarInt(0x02); // Chat Message packet Packet.WriteVarUTF8String(Message); WritePacket(Packet); } void cProtocol172::SendChunkData(int a_ChunkX, int a_ChunkZ, cChunkDataSerializer & a_Serializer) { const AString & ChunkData = a_Serializer.Serialize(cChunkDataSerializer::RELEASE_1_3_2); // This contains the flags and bitmasks, too cByteBuffer Packet(40 + ChunkData.size()); Packet.WriteVarInt(0x21); // Chunk Data packet Packet.WriteBEInt(a_ChunkX); Packet.WriteBEInt(a_ChunkZ); Packet.Write(ChunkData.data(), ChunkData.size()); WritePacket(Packet); } void cProtocol172::SendCollectPickup(const cPickup & a_Pickup, const cPlayer & a_Player) { cByteBuffer Packet(9); Packet.WriteVarInt(0x0d); // Collect Item packet Packet.WriteBEInt(a_Pickup.GetUniqueID()); Packet.WriteBEInt(a_Player.GetUniqueID()); WritePacket(Packet); } void cProtocol172::SendDestroyEntity(const cEntity & a_Entity) { cByteBuffer Packet(6); Packet.WriteVarInt(0x13); // Destroy Entities packet Packet.WriteByte(0); Packet.WriteBEInt(a_Entity.GetUniqueID()); WritePacket(Packet); } void cProtocol172::SendDisconnect(const AString & a_Reason) { cByteBuffer Packet(10 + a_Reason.size()); Packet.WriteVarInt(0x40); // Disconnect packet Packet.WriteVarUTF8String(a_Reason); WritePacket(Packet); } void cProtocol172::SendEditSign(int a_BlockX, int a_BlockY, int a_BlockZ) ///< Request the client to open up the sign editor for the sign(1.6+) { // TODO } void cProtocol172::SendEntityEquipment(const cEntity & a_Entity, short a_SlotNum, const cItem & a_Item) { // TODO } void cProtocol172::SendEntityHeadLook(const cEntity & a_Entity) { // TODO } void cProtocol172::SendEntityLook(const cEntity & a_Entity) { // TODO } void cProtocol172::SendEntityMetadata(const cEntity & a_Entity) { // TODO } void cProtocol172::SendEntityProperties(const cEntity & a_Entity) { // TODO } void cProtocol172::SendEntityRelMove(const cEntity & a_Entity, char a_RelX, char a_RelY, char a_RelZ) { // TODO } void cProtocol172::SendEntityRelMoveLook(const cEntity & a_Entity, char a_RelX, char a_RelY, char a_RelZ) { // TODO } void cProtocol172::SendEntityStatus(const cEntity & a_Entity, char a_Status) { // TODO } void cProtocol172::SendEntityVelocity(const cEntity & a_Entity) { // TODO } void cProtocol172::SendExplosion(double a_BlockX, double a_BlockY, double a_BlockZ, float a_Radius, const cVector3iArray & a_BlocksAffected, const Vector3d & a_PlayerMotion) { // TODO } void cProtocol172::SendGameMode(eGameMode a_GameMode) { // TODO } void cProtocol172::SendHealth(void) { // TODO } void cProtocol172::SendInventorySlot(char a_WindowID, short a_SlotNum, const cItem & a_Item) { // TODO } void cProtocol172::SendKeepAlive(int a_PingID) { // TODO } void cProtocol172::SendLogin(const cPlayer & a_Player, const cWorld & a_World) { // Send the spawn position: cByteBuffer Packet(20); Packet.WriteVarInt(0x05); // Spawn Position packet Packet.WriteBEInt((int)a_World.GetSpawnX()); Packet.WriteBEInt((int)a_World.GetSpawnY()); Packet.WriteBEInt((int)a_World.GetSpawnZ()); WritePacket(Packet); // Send player abilities: SendPlayerAbilities(); } void cProtocol172::SendPickupSpawn(const cPickup & a_Pickup) { // TODO } void cProtocol172::SendPlayerAbilities(void) { cByteBuffer Packet(20); Packet.WriteVarInt(0x39); // Player Abilities packet Byte Flags = 0; if (m_Client->GetPlayer()->IsGameModeCreative()) { Flags |= 0x01; } // TODO: Other flags (god mode, flying, can fly Packet.WriteByte(Flags); // TODO: Packet.WriteBEFloat(m_Client->GetPlayer()->GetMaxFlyingSpeed()); Packet.WriteBEFloat(0.05f); Packet.WriteBEFloat((float)m_Client->GetPlayer()->GetMaxSpeed()); WritePacket(Packet); } void cProtocol172::SendPlayerAnimation(const cPlayer & a_Player, char a_Animation) { // TODO } void cProtocol172::SendPlayerListItem(const cPlayer & a_Player, bool a_IsOnline) { cByteBuffer Packet(10 + a_Player.GetName().size()); Packet.WriteVarInt(0x38); // Playerlist Item packet Packet.WriteVarUTF8String(a_Player.GetName()); Packet.WriteBool(a_IsOnline); Packet.WriteBEShort(a_Player.GetClientHandle()->GetPing()); WritePacket(Packet); } void cProtocol172::SendPlayerMaxSpeed(void) { SendPlayerAbilities(); } void cProtocol172::SendPlayerMoveLook(void) { // TODO } void cProtocol172::SendPlayerPosition(void) { // TODO } void cProtocol172::SendPlayerSpawn(const cPlayer & a_Player) { // TODO } void cProtocol172::SendRespawn(void) { // TODO } void cProtocol172::SendSoundEffect(const AString & a_SoundName, int a_SrcX, int a_SrcY, int a_SrcZ, float a_Volume, float a_Pitch) // a_Src coords are Block * 8 { // TODO } void cProtocol172::SendSoundParticleEffect(int a_EffectID, int a_SrcX, int a_SrcY, int a_SrcZ, int a_Data) { // TODO } void cProtocol172::SendSpawnFallingBlock(const cFallingBlock & a_FallingBlock) { // TODO } void cProtocol172::SendSpawnMob(const cMonster & a_Mob) { // TODO } void cProtocol172::SendSpawnObject(const cEntity & a_Entity, char a_ObjectType, int a_ObjectData, Byte a_Yaw, Byte a_Pitch) { // TODO } void cProtocol172::SendSpawnVehicle(const cEntity & a_Vehicle, char a_VehicleType, char a_VehicleSubType) { // TODO } void cProtocol172::SendTabCompletionResults(const AStringVector & a_Results) { // TODO } void cProtocol172::SendTeleportEntity(const cEntity & a_Entity) { // TODO } void cProtocol172::SendThunderbolt(int a_BlockX, int a_BlockY, int a_BlockZ) { // TODO } void cProtocol172::SendTimeUpdate(Int64 a_WorldAge, Int64 a_TimeOfDay) { // TODO } void cProtocol172::SendUnloadChunk(int a_ChunkX, int a_ChunkZ) { // TODO } void cProtocol172::SendUpdateSign(int a_BlockX, int a_BlockY, int a_BlockZ, const AString & a_Line1, const AString & a_Line2, const AString & a_Line3, const AString & a_Line4) { // TODO } void cProtocol172::SendUseBed(const cEntity & a_Entity, int a_BlockX, int a_BlockY, int a_BlockZ ) { // TODO } void cProtocol172::SendWeather(eWeather a_Weather) { // TODO } void cProtocol172::SendWholeInventory(const cInventory & a_Inventory) { // TODO } void cProtocol172::SendWholeInventory(const cWindow & a_Window) { // TODO } void cProtocol172::SendWindowClose(const cWindow & a_Window) { // TODO } void cProtocol172::SendWindowOpen(char a_WindowID, char a_WindowType, const AString & a_WindowTitle, char a_NumSlots) { // TODO } void cProtocol172::SendWindowProperty(const cWindow & a_Window, short a_Property, short a_Value) { // TODO } 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(); }