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c45bf7cf55
cuberite-2a/src/Protocol/Protocol17x.cpp
Howaner c45bf7cf55 1.8: Fixed hangings.
2014-09-11 20:06:28 +02:00

3153 lines
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// Protocol17x.cpp
/*
Implements the 1.7.x protocol classes:
- cProtocol172
- release 1.7.2 protocol (#4)
- cProtocol176
- release 1.7.6 protocol (#5)
*/
#include "Globals.h"
#include "json/json.h"
#include "Protocol17x.h"
#include "ProtocolRecognizer.h"
#include "ChunkDataSerializer.h"
#include "PolarSSL++/Sha1Checksum.h"
#include "../ClientHandle.h"
#include "../Root.h"
#include "../Server.h"
#include "../World.h"
#include "../StringCompression.h"
#include "../CompositeChat.h"
#include "../Statistics.h"
#include "../WorldStorage/FastNBT.h"
#include "../WorldStorage/EnchantmentSerializer.h"
#include "../Entities/ExpOrb.h"
#include "../Entities/Minecart.h"
#include "../Entities/FallingBlock.h"
#include "../Entities/Painting.h"
#include "../Entities/Pickup.h"
#include "../Entities/Player.h"
#include "../Entities/ItemFrame.h"
#include "../Entities/ArrowEntity.h"
#include "../Entities/FireworkEntity.h"
#include "../Mobs/IncludeAllMonsters.h"
#include "../UI/Window.h"
#include "../BlockEntities/BeaconEntity.h"
#include "../BlockEntities/CommandBlockEntity.h"
#include "../BlockEntities/MobHeadEntity.h"
#include "../BlockEntities/FlowerPotEntity.h"
#include "Bindings/PluginManager.h"
#define HANDLE_READ(ByteBuf, Proc, Type, Var) \
Type Var; \
if (!ByteBuf.Proc(Var))\
{\
return;\
}
#define HANDLE_PACKET_READ(ByteBuf, Proc, Type, Var) \
Type Var; \
{ \
if (!ByteBuf.Proc(Var)) \
{ \
ByteBuf.CheckValid(); \
return false; \
} \
ByteBuf.CheckValid(); \
}
const int MAX_ENC_LEN = 512; // Maximum size of the encrypted message; should be 128, but who knows...
// fwd: main.cpp:
extern bool g_ShouldLogCommIn, g_ShouldLogCommOut;
////////////////////////////////////////////////////////////////////////////////
// cProtocol172:
cProtocol172::cProtocol172(cClientHandle * a_Client, const AString & a_ServerAddress, UInt16 a_ServerPort, UInt32 a_State) :
super(a_Client, cProtocolRecognizer::PROTO_VERSION_1_7_2),
m_ServerAddress(a_ServerAddress),
m_ServerPort(a_ServerPort),
m_State(a_State),
m_ReceivedData(32 KiB),
m_OutPacketBuffer(64 KiB),
m_OutPacketLenBuffer(20), // 20 bytes is more than enough for one VarInt
m_IsEncrypted(false),
m_LastSentDimension(dimNotSet)
{
// Create the comm log file, if so requested:
if (g_ShouldLogCommIn || g_ShouldLogCommOut)
{
static int sCounter = 0;
cFile::CreateFolder("CommLogs");
AString FileName = Printf("CommLogs/%x_%d__%s.log", (unsigned)time(NULL), sCounter++, a_Client->GetIPString().c_str());
m_CommLogFile.Open(FileName, cFile::fmWrite);
}
}
void cProtocol172::DataReceived(const char * a_Data, size_t a_Size)
{
if (m_IsEncrypted)
{
Byte Decrypted[512];
while (a_Size > 0)
{
size_t 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)
{
ASSERT(m_State == 3); // In game mode?
cPacketizer Pkt(*this, 0x1b); // Attach Entity packet
Pkt.WriteInt(a_Entity.GetUniqueID());
Pkt.WriteInt((a_Vehicle != NULL) ? a_Vehicle->GetUniqueID() : 0);
Pkt.WriteBool(false);
}
void cProtocol172::SendBlockAction(int a_BlockX, int a_BlockY, int a_BlockZ, char a_Byte1, char a_Byte2, BLOCKTYPE a_BlockType)
{
ASSERT(m_State == 3); // In game mode?
cPacketizer Pkt(*this, 0x24); // Block Action packet
Pkt.WriteInt(a_BlockX);
Pkt.WriteShort(a_BlockY);
Pkt.WriteInt(a_BlockZ);
Pkt.WriteByte(a_Byte1);
Pkt.WriteByte(a_Byte2);
Pkt.WriteVarInt(a_BlockType);
}
void cProtocol172::SendBlockBreakAnim(int a_EntityID, int a_BlockX, int a_BlockY, int a_BlockZ, char a_Stage)
{
ASSERT(m_State == 3); // In game mode?
cPacketizer Pkt(*this, 0x25); // Block Break Animation packet
Pkt.WriteVarInt(a_EntityID);
Pkt.WriteInt(a_BlockX);
Pkt.WriteInt(a_BlockY);
Pkt.WriteInt(a_BlockZ);
Pkt.WriteChar(a_Stage);
}
void cProtocol172::SendBlockChange(int a_BlockX, int a_BlockY, int a_BlockZ, BLOCKTYPE a_BlockType, NIBBLETYPE a_BlockMeta)
{
ASSERT(m_State == 3); // In game mode?
cPacketizer Pkt(*this, 0x23); // Block Change packet
Pkt.WriteInt(a_BlockX);
Pkt.WriteByte(a_BlockY);
Pkt.WriteInt(a_BlockZ);
Pkt.WriteVarInt(a_BlockType);
Pkt.WriteByte(a_BlockMeta);
}
void cProtocol172::SendBlockChanges(int a_ChunkX, int a_ChunkZ, const sSetBlockVector & a_Changes)
{
ASSERT(m_State == 3); // In game mode?
cPacketizer Pkt(*this, 0x22); // Multi Block Change packet
Pkt.WriteInt(a_ChunkX);
Pkt.WriteInt(a_ChunkZ);
Pkt.WriteShort((short)a_Changes.size());
Pkt.WriteInt((int)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);
Pkt.WriteInt((Coords << 16) | Blocks);
} // for itr - a_Changes[]
}
void cProtocol172::SendChat(const AString & a_Message)
{
ASSERT(m_State == 3); // In game mode?
cPacketizer Pkt(*this, 0x02); // Chat Message packet
Pkt.WriteString(Printf("{\"text\":\"%s\"}", EscapeString(a_Message).c_str()));
}
void cProtocol172::SendChat(const cCompositeChat & a_Message)
{
ASSERT(m_State == 3); // In game mode?
// Compose the complete Json string to send:
Json::Value msg;
cWorld * World = m_Client->GetPlayer()->GetWorld();
msg["text"] = cClientHandle::FormatMessageType((World == NULL) ? false : World->ShouldUseChatPrefixes(), a_Message.GetMessageType(), a_Message.GetAdditionalMessageTypeData()); // The client crashes without this field being present
const cCompositeChat::cParts & Parts = a_Message.GetParts();
for (cCompositeChat::cParts::const_iterator itr = Parts.begin(), end = Parts.end(); itr != end; ++itr)
{
Json::Value Part;
switch ((*itr)->m_PartType)
{
case cCompositeChat::ptText:
{
Part["text"] = (*itr)->m_Text;
AddChatPartStyle(Part, (*itr)->m_Style);
break;
}
case cCompositeChat::ptClientTranslated:
{
const cCompositeChat::cClientTranslatedPart & p = (const cCompositeChat::cClientTranslatedPart &)**itr;
Part["translate"] = p.m_Text;
Json::Value With;
for (AStringVector::const_iterator itrW = p.m_Parameters.begin(), endW = p.m_Parameters.end(); itrW != endW; ++itr)
{
With.append(*itrW);
}
if (!p.m_Parameters.empty())
{
Part["with"] = With;
}
AddChatPartStyle(Part, p.m_Style);
break;
}
case cCompositeChat::ptUrl:
{
const cCompositeChat::cUrlPart & p = (const cCompositeChat::cUrlPart &)**itr;
Part["text"] = p.m_Text;
Json::Value Url;
Url["action"] = "open_url";
Url["value"] = p.m_Url;
Part["clickEvent"] = Url;
AddChatPartStyle(Part, p.m_Style);
break;
}
case cCompositeChat::ptSuggestCommand:
case cCompositeChat::ptRunCommand:
{
const cCompositeChat::cCommandPart & p = (const cCompositeChat::cCommandPart &)**itr;
Part["text"] = p.m_Text;
Json::Value Cmd;
Cmd["action"] = (p.m_PartType == cCompositeChat::ptRunCommand) ? "run_command" : "suggest_command";
Cmd["value"] = p.m_Command;
Part["clickEvent"] = Cmd;
AddChatPartStyle(Part, p.m_Style);
break;
}
case cCompositeChat::ptShowAchievement:
{
const cCompositeChat::cShowAchievementPart & p = (const cCompositeChat::cShowAchievementPart &)**itr;
Part["translate"] = "chat.type.achievement";
Json::Value Ach;
Ach["action"] = "show_achievement";
Ach["value"] = p.m_Text;
Json::Value AchColourAndName;
AchColourAndName["color"] = "green";
AchColourAndName["translate"] = p.m_Text;
AchColourAndName["hoverEvent"] = Ach;
Json::Value Extra;
Extra.append(AchColourAndName);
Json::Value Name;
Name["text"] = p.m_PlayerName;
Json::Value With;
With.append(Name);
With.append(Extra);
Part["with"] = With;
AddChatPartStyle(Part, p.m_Style);
break;
}
}
msg["extra"].append(Part);
} // for itr - Parts[]
// Send the message to the client:
cPacketizer Pkt(*this, 0x02);
Pkt.WriteString(msg.toStyledString());
}
void cProtocol172::SendChunkData(int a_ChunkX, int a_ChunkZ, cChunkDataSerializer & a_Serializer)
{
ASSERT(m_State == 3); // In game mode?
// Serialize first, before creating the Packetizer (the packetizer locks a CS)
// This contains the flags and bitmasks, too
const AString & ChunkData = a_Serializer.Serialize(cChunkDataSerializer::RELEASE_1_3_2, a_ChunkX, a_ChunkZ);
cPacketizer Pkt(*this, 0x21); // Chunk Data packet
Pkt.WriteInt(a_ChunkX);
Pkt.WriteInt(a_ChunkZ);
Pkt.WriteBuf(ChunkData.data(), ChunkData.size());
}
void cProtocol172::SendCollectEntity(const cEntity & a_Entity, const cPlayer & a_Player)
{
ASSERT(m_State == 3); // In game mode?
cPacketizer Pkt(*this, 0x0d); // Collect Item packet
Pkt.WriteInt(a_Entity.GetUniqueID());
Pkt.WriteInt(a_Player.GetUniqueID());
}
void cProtocol172::SendDestroyEntity(const cEntity & a_Entity)
{
ASSERT(m_State == 3); // In game mode?
cPacketizer Pkt(*this, 0x13); // Destroy Entities packet
Pkt.WriteByte(1);
Pkt.WriteInt(a_Entity.GetUniqueID());
}
void cProtocol172::SendDisconnect(const AString & a_Reason)
{
switch (m_State)
{
case 2:
{
// During login:
cPacketizer Pkt(*this, 0);
Pkt.WriteString(Printf("{\"text\":\"%s\"}", EscapeString(a_Reason).c_str()));
break;
}
case 3:
{
// In-game:
cPacketizer Pkt(*this, 0x40);
Pkt.WriteString(Printf("{\"text\":\"%s\"}", EscapeString(a_Reason).c_str()));
break;
}
}
}
void cProtocol172::SendEditSign(int a_BlockX, int a_BlockY, int a_BlockZ)
{
ASSERT(m_State == 3); // In game mode?
cPacketizer Pkt(*this, 0x36); // Sign Editor Open packet
Pkt.WriteInt(a_BlockX);
Pkt.WriteInt(a_BlockY);
Pkt.WriteInt(a_BlockZ);
}
void cProtocol172::SendEntityEffect(const cEntity & a_Entity, int a_EffectID, int a_Amplifier, short a_Duration)
{
ASSERT(m_State == 3); // In game mode?
cPacketizer Pkt(*this, 0x1D); // Entity Effect packet
Pkt.WriteInt(a_Entity.GetUniqueID());
Pkt.WriteByte(a_EffectID);
Pkt.WriteByte(a_Amplifier);
Pkt.WriteShort(a_Duration);
}
void cProtocol172::SendEntityEquipment(const cEntity & a_Entity, short a_SlotNum, const cItem & a_Item)
{
ASSERT(m_State == 3); // In game mode?
cPacketizer Pkt(*this, 0x04); // Entity Equipment packet
Pkt.WriteInt(a_Entity.GetUniqueID());
Pkt.WriteShort(a_SlotNum);
Pkt.WriteItem(a_Item);
}
void cProtocol172::SendEntityHeadLook(const cEntity & a_Entity)
{
ASSERT(m_State == 3); // In game mode?
cPacketizer Pkt(*this, 0x19); // Entity Head Look packet
Pkt.WriteInt(a_Entity.GetUniqueID());
Pkt.WriteByteAngle(a_Entity.GetHeadYaw());
}
void cProtocol172::SendEntityLook(const cEntity & a_Entity)
{
ASSERT(m_State == 3); // In game mode?
cPacketizer Pkt(*this, 0x16); // Entity Look packet
Pkt.WriteInt(a_Entity.GetUniqueID());
Pkt.WriteByteAngle(a_Entity.GetYaw());
Pkt.WriteByteAngle(a_Entity.GetPitch());
}
void cProtocol172::SendEntityMetadata(const cEntity & a_Entity)
{
ASSERT(m_State == 3); // In game mode?
cPacketizer Pkt(*this, 0x1c); // Entity Metadata packet
Pkt.WriteInt(a_Entity.GetUniqueID());
Pkt.WriteEntityMetadata(a_Entity);
Pkt.WriteByte(0x7f); // The termination byte
}
void cProtocol172::SendEntityProperties(const cEntity & a_Entity)
{
ASSERT(m_State == 3); // In game mode?
cPacketizer Pkt(*this, 0x20); // Entity Properties packet
Pkt.WriteInt(a_Entity.GetUniqueID());
Pkt.WriteEntityProperties(a_Entity);
}
void cProtocol172::SendEntityRelMove(const cEntity & a_Entity, char a_RelX, char a_RelY, char a_RelZ)
{
ASSERT(m_State == 3); // In game mode?
cPacketizer Pkt(*this, 0x15); // Entity Relative Move packet
Pkt.WriteInt(a_Entity.GetUniqueID());
Pkt.WriteByte(a_RelX);
Pkt.WriteByte(a_RelY);
Pkt.WriteByte(a_RelZ);
}
void cProtocol172::SendEntityRelMoveLook(const cEntity & a_Entity, char a_RelX, char a_RelY, char a_RelZ)
{
ASSERT(m_State == 3); // In game mode?
cPacketizer Pkt(*this, 0x17); // Entity Look And Relative Move packet
Pkt.WriteInt(a_Entity.GetUniqueID());
Pkt.WriteByte(a_RelX);
Pkt.WriteByte(a_RelY);
Pkt.WriteByte(a_RelZ);
Pkt.WriteByteAngle(a_Entity.GetYaw());
Pkt.WriteByteAngle(a_Entity.GetPitch());
}
void cProtocol172::SendEntityStatus(const cEntity & a_Entity, char a_Status)
{
ASSERT(m_State == 3); // In game mode?
cPacketizer Pkt(*this, 0x1a); // Entity Status packet
Pkt.WriteInt(a_Entity.GetUniqueID());
Pkt.WriteChar(a_Status);
}
void cProtocol172::SendEntityVelocity(const cEntity & a_Entity)
{
ASSERT(m_State == 3); // In game mode?
cPacketizer Pkt(*this, 0x12); // Entity Velocity packet
Pkt.WriteInt(a_Entity.GetUniqueID());
// 400 = 8000 / 20 ... Conversion from our speed in m/s to 8000 m/tick
Pkt.WriteShort((short)(a_Entity.GetSpeedX() * 400));
Pkt.WriteShort((short)(a_Entity.GetSpeedY() * 400));
Pkt.WriteShort((short)(a_Entity.GetSpeedZ() * 400));
}
void cProtocol172::SendExplosion(double a_BlockX, double a_BlockY, double a_BlockZ, float a_Radius, const cVector3iArray & a_BlocksAffected, const Vector3d & a_PlayerMotion)
{
ASSERT(m_State == 3); // In game mode?
cPacketizer Pkt(*this, 0x27); // Explosion packet
Pkt.WriteFloat((float)a_BlockX);
Pkt.WriteFloat((float)a_BlockY);
Pkt.WriteFloat((float)a_BlockZ);
Pkt.WriteFloat((float)a_Radius);
Pkt.WriteInt((int)a_BlocksAffected.size());
for (cVector3iArray::const_iterator itr = a_BlocksAffected.begin(), end = a_BlocksAffected.end(); itr != end; ++itr)
{
Pkt.WriteChar((char)itr->x);
Pkt.WriteChar((char)itr->y);
Pkt.WriteChar((char)itr->z);
} // for itr - a_BlockAffected[]
Pkt.WriteFloat((float)a_PlayerMotion.x);
Pkt.WriteFloat((float)a_PlayerMotion.y);
Pkt.WriteFloat((float)a_PlayerMotion.z);
}
void cProtocol172::SendGameMode(eGameMode a_GameMode)
{
ASSERT(m_State == 3); // In game mode?
cPacketizer Pkt(*this, 0x2b); // Change Game State packet
Pkt.WriteByte(3); // Reason: Change game mode
Pkt.WriteFloat((float)a_GameMode);
}
void cProtocol172::SendHealth(void)
{
ASSERT(m_State == 3); // In game mode?
cPacketizer Pkt(*this, 0x06); // Update Health packet
cPlayer * Player = m_Client->GetPlayer();
Pkt.WriteFloat((float)Player->GetHealth());
Pkt.WriteShort(Player->GetFoodLevel());
Pkt.WriteFloat((float)Player->GetFoodSaturationLevel());
}
void cProtocol172::SendInventorySlot(char a_WindowID, short a_SlotNum, const cItem & a_Item)
{
ASSERT(m_State == 3); // In game mode?
cPacketizer Pkt(*this, 0x2f); // Set Slot packet
Pkt.WriteChar(a_WindowID);
Pkt.WriteShort(a_SlotNum);
Pkt.WriteItem(a_Item);
}
void cProtocol172::SendKeepAlive(int a_PingID)
{
// Drop the packet if the protocol is not in the Game state yet (caused a client crash):
if (m_State != 3)
{
LOGWARNING("Trying to send a KeepAlive packet to a player who's not yet fully logged in (%d). The protocol class prevented the packet.", m_State);
return;
}
cPacketizer Pkt(*this, 0x00); // Keep Alive packet
Pkt.WriteInt(a_PingID);
}
void cProtocol172::SendLogin(const cPlayer & a_Player, const cWorld & a_World)
{
// Send the Join Game packet:
{
cServer * Server = cRoot::Get()->GetServer();
cPacketizer Pkt(*this, 0x01); // Join Game packet
Pkt.WriteInt(a_Player.GetUniqueID());
Pkt.WriteByte((Byte)a_Player.GetEffectiveGameMode() | (Server->IsHardcore() ? 0x08 : 0)); // Hardcore flag bit 4
Pkt.WriteChar((char)a_World.GetDimension());
Pkt.WriteByte(2); // TODO: Difficulty (set to Normal)
Pkt.WriteByte(std::min(Server->GetMaxPlayers(), 60));
Pkt.WriteString("default"); // Level type - wtf?
}
m_LastSentDimension = a_World.GetDimension();
// Send the spawn position:
{
cPacketizer Pkt(*this, 0x05); // Spawn Position packet
Pkt.WriteInt((int)a_World.GetSpawnX());
Pkt.WriteInt((int)a_World.GetSpawnY());
Pkt.WriteInt((int)a_World.GetSpawnZ());
}
// Send player abilities:
SendPlayerAbilities();
}
void cProtocol172::SendLoginSuccess(void)
{
ASSERT(m_State == 2); // State: login?
{
cPacketizer Pkt(*this, 0x02); // Login success packet
Pkt.WriteString(cMojangAPI::MakeUUIDDashed(m_Client->GetUUID()));
Pkt.WriteString(m_Client->GetUsername());
}
m_State = 3; // State = Game
}
void cProtocol172::SendPaintingSpawn(const cPainting & a_Painting)
{
ASSERT(m_State == 3); // In game mode?
cPacketizer Pkt(*this, 0x10); // Spawn Painting packet
Pkt.WriteVarInt(a_Painting.GetUniqueID());
Pkt.WriteString(a_Painting.GetName().c_str());
Pkt.WriteInt((int)a_Painting.GetPosX());
Pkt.WriteInt((int)a_Painting.GetPosY());
Pkt.WriteInt((int)a_Painting.GetPosZ());
Pkt.WriteInt(a_Painting.GetDirection());
}
void cProtocol172::SendMapColumn(int a_ID, int a_X, int a_Y, const Byte * a_Colors, unsigned int a_Length)
{
ASSERT(m_State == 3); // In game mode?
cPacketizer Pkt(*this, 0x34);
Pkt.WriteVarInt(a_ID);
Pkt.WriteShort (3 + a_Length);
Pkt.WriteByte(0);
Pkt.WriteByte(a_X);
Pkt.WriteByte(a_Y);
for (unsigned int i = 0; i < a_Length; ++i)
{
Pkt.WriteByte(a_Colors[i]);
}
}
void cProtocol172::SendMapDecorators(int a_ID, const cMapDecoratorList & a_Decorators)
{
ASSERT(m_State == 3); // In game mode?
cPacketizer Pkt(*this, 0x34);
Pkt.WriteVarInt(a_ID);
Pkt.WriteShort ((short)(1 + (3 * a_Decorators.size())));
Pkt.WriteByte(1);
for (cMapDecoratorList::const_iterator it = a_Decorators.begin(); it != a_Decorators.end(); ++it)
{
Pkt.WriteByte((it->GetType() << 4) | (it->GetRot() & 0xf));
Pkt.WriteByte(it->GetPixelX());
Pkt.WriteByte(it->GetPixelZ());
}
}
void cProtocol172::SendMapInfo(int a_ID, unsigned int a_Scale)
{
ASSERT(m_State == 3); // In game mode?
cPacketizer Pkt(*this, 0x34);
Pkt.WriteVarInt(a_ID);
Pkt.WriteShort (2);
Pkt.WriteByte(2);
Pkt.WriteByte(a_Scale);
}
void cProtocol172::SendPickupSpawn(const cPickup & a_Pickup)
{
ASSERT(m_State == 3); // In game mode?
{
cPacketizer Pkt(*this, 0x0e); // Spawn Object packet
Pkt.WriteVarInt(a_Pickup.GetUniqueID());
Pkt.WriteByte(2); // Type = Pickup
Pkt.WriteFPInt(a_Pickup.GetPosX());
Pkt.WriteFPInt(a_Pickup.GetPosY());
Pkt.WriteFPInt(a_Pickup.GetPosZ());
Pkt.WriteByteAngle(a_Pickup.GetYaw());
Pkt.WriteByteAngle(a_Pickup.GetPitch());
Pkt.WriteInt(0); // No object data
}
{
cPacketizer Pkt(*this, 0x1c); // Entity Metadata packet
Pkt.WriteInt(a_Pickup.GetUniqueID());
Pkt.WriteByte((0x05 << 5) | 10); // Slot type + index 10
Pkt.WriteItem(a_Pickup.GetItem());
Pkt.WriteByte(0x7f); // End of metadata
}
}
void cProtocol172::SendPlayerAbilities(void)
{
ASSERT(m_State == 3); // In game mode?
cPacketizer Pkt(*this, 0x39); // Player Abilities packet
Byte Flags = 0;
cPlayer * Player = m_Client->GetPlayer();
if (Player->IsGameModeCreative())
{
Flags |= 0x01;
Flags |= 0x08; // Godmode, used for creative
}
if (Player->IsFlying())
{
Flags |= 0x02;
}
if (Player->CanFly())
{
Flags |= 0x04;
}
Pkt.WriteByte(Flags);
Pkt.WriteFloat((float)(0.05 * Player->GetFlyingMaxSpeed()));
Pkt.WriteFloat((float)(0.1 * Player->GetNormalMaxSpeed()));
}
void cProtocol172::SendEntityAnimation(const cEntity & a_Entity, char a_Animation)
{
ASSERT(m_State == 3); // In game mode?
cPacketizer Pkt(*this, 0x0b); // Animation packet
Pkt.WriteVarInt(a_Entity.GetUniqueID());
Pkt.WriteChar(a_Animation);
}
void cProtocol172::SendParticleEffect(const AString & a_ParticleName, float a_SrcX, float a_SrcY, float a_SrcZ, float a_OffsetX, float a_OffsetY, float a_OffsetZ, float a_ParticleData, int a_ParticleAmount)
{
ASSERT(m_State == 3); // In game mode?
cPacketizer Pkt(*this, 0x2A);
Pkt.WriteString(a_ParticleName);
Pkt.WriteFloat(a_SrcX);
Pkt.WriteFloat(a_SrcY);
Pkt.WriteFloat(a_SrcZ);
Pkt.WriteFloat(a_OffsetX);
Pkt.WriteFloat(a_OffsetY);
Pkt.WriteFloat(a_OffsetZ);
Pkt.WriteFloat(a_ParticleData);
Pkt.WriteInt(a_ParticleAmount);
}
void cProtocol172::SendPlayerListItem(const cPlayer & a_Player, char a_Action)
{
ASSERT(m_State == 3); // In game mode?
if (a_Action == 1)
{
// Ignore gamemode update
return;
}
cPacketizer Pkt(*this, 0x38); // Playerlist Item packet
Pkt.WriteString(a_Player.GetName());
Pkt.WriteBool(a_Action != 4);
Pkt.WriteShort((a_Action == 4) ? 0 : a_Player.GetClientHandle()->GetPing());
}
void cProtocol172::SendPlayerMaxSpeed(void)
{
ASSERT(m_State == 3); // In game mode?
cPacketizer Pkt(*this, 0x20); // Entity Properties
cPlayer * Player = m_Client->GetPlayer();
Pkt.WriteInt(Player->GetUniqueID());
Pkt.WriteInt(1); // Count
Pkt.WriteString("generic.movementSpeed");
// The default game speed is 0.1, multiply that value by the relative speed:
Pkt.WriteDouble(0.1 * Player->GetNormalMaxSpeed());
if (Player->IsSprinting())
{
Pkt.WriteShort(1); // Modifier count
Pkt.WriteInt64(0x662a6b8dda3e4c1c);
Pkt.WriteInt64(0x881396ea6097278d); // UUID of the modifier
Pkt.WriteDouble(Player->GetSprintingMaxSpeed() - Player->GetNormalMaxSpeed());
Pkt.WriteByte(2);
}
else
{
Pkt.WriteShort(0); // Modifier count
}
}
void cProtocol172::SendPlayerMoveLook(void)
{
ASSERT(m_State == 3); // In game mode?
cPacketizer Pkt(*this, 0x08); // Player Position And Look packet
cPlayer * Player = m_Client->GetPlayer();
Pkt.WriteDouble(Player->GetPosX());
// Protocol docs say this is PosY, but #323 says this is eye-pos
// Moreover, the "+ 0.001" is there because otherwise the player falls through the block they were standing on.
Pkt.WriteDouble(Player->GetStance() + 0.001);
Pkt.WriteDouble(Player->GetPosZ());
Pkt.WriteFloat((float)Player->GetYaw());
Pkt.WriteFloat((float)Player->GetPitch());
Pkt.WriteBool(Player->IsOnGround());
}
void cProtocol172::SendPlayerPosition(void)
{
// There is no dedicated packet for this, send the whole thing:
SendPlayerMoveLook();
}
void cProtocol172::SendPlayerSpawn(const cPlayer & a_Player)
{
ASSERT(m_State == 3); // In game mode?
// Called to spawn another player for the client
cPacketizer Pkt(*this, 0x0c); // Spawn Player packet
Pkt.WriteVarInt(a_Player.GetUniqueID());
Pkt.WriteString(cMojangAPI::MakeUUIDDashed(a_Player.GetClientHandle()->GetUUID()));
Pkt.WriteString(a_Player.GetName());
Pkt.WriteFPInt(a_Player.GetPosX());
Pkt.WriteFPInt(a_Player.GetPosY());
Pkt.WriteFPInt(a_Player.GetPosZ());
Pkt.WriteByteAngle(a_Player.GetYaw());
Pkt.WriteByteAngle(a_Player.GetPitch());
short ItemType = a_Player.GetEquippedItem().IsEmpty() ? 0 : a_Player.GetEquippedItem().m_ItemType;
Pkt.WriteShort(ItemType);
Pkt.WriteByte((3 << 5) | 6); // Metadata: float + index 6
Pkt.WriteFloat((float)a_Player.GetHealth());
Pkt.WriteByte(0x7f); // Metadata: end
}
void cProtocol172::SendPluginMessage(const AString & a_Channel, const AString & a_Message)
{
ASSERT(m_State == 3); // In game mode?
cPacketizer Pkt(*this, 0x3f);
Pkt.WriteString(a_Channel);
Pkt.WriteShort((short)a_Message.size());
Pkt.WriteBuf(a_Message.data(), a_Message.size());
}
void cProtocol172::SendRemoveEntityEffect(const cEntity & a_Entity, int a_EffectID)
{
ASSERT(m_State == 3); // In game mode?
cPacketizer Pkt(*this, 0x1e);
Pkt.WriteInt(a_Entity.GetUniqueID());
Pkt.WriteByte(a_EffectID);
}
void cProtocol172::SendRespawn(eDimension a_Dimension, bool a_ShouldIgnoreDimensionChecks)
{
if ((m_LastSentDimension == a_Dimension) && !a_ShouldIgnoreDimensionChecks)
{
// Must not send a respawn for the world with the same dimension, the client goes cuckoo if we do (unless we are respawning from death)
return;
}
cPacketizer Pkt(*this, 0x07); // Respawn packet
cPlayer * Player = m_Client->GetPlayer();
Pkt.WriteInt((int)a_Dimension);
Pkt.WriteByte(2); // TODO: Difficulty (set to Normal)
Pkt.WriteByte((Byte)Player->GetEffectiveGameMode());
Pkt.WriteString("default");
m_LastSentDimension = a_Dimension;
}
void cProtocol172::SendExperience (void)
{
ASSERT(m_State == 3); // In game mode?
cPacketizer Pkt(*this, 0x1f); // Experience Packet
cPlayer * Player = m_Client->GetPlayer();
Pkt.WriteFloat(Player->GetXpPercentage());
Pkt.WriteShort(Player->GetXpLevel());
Pkt.WriteShort(Player->GetCurrentXp());
}
void cProtocol172::SendExperienceOrb(const cExpOrb & a_ExpOrb)
{
ASSERT(m_State == 3); // In game mode?
cPacketizer Pkt(*this, 0x11);
Pkt.WriteVarInt(a_ExpOrb.GetUniqueID());
Pkt.WriteInt((int) a_ExpOrb.GetPosX());
Pkt.WriteInt((int) a_ExpOrb.GetPosY());
Pkt.WriteInt((int) a_ExpOrb.GetPosZ());
Pkt.WriteShort(a_ExpOrb.GetReward());
}
void cProtocol172::SendScoreboardObjective(const AString & a_Name, const AString & a_DisplayName, Byte a_Mode)
{
ASSERT(m_State == 3); // In game mode?
cPacketizer Pkt(*this, 0x3b);
Pkt.WriteString(a_Name);
Pkt.WriteString(a_DisplayName);
Pkt.WriteByte(a_Mode);
}
void cProtocol172::SendScoreUpdate(const AString & a_Objective, const AString & a_Player, cObjective::Score a_Score, Byte a_Mode)
{
ASSERT(m_State == 3); // In game mode?
cPacketizer Pkt(*this, 0x3c);
Pkt.WriteString(a_Player);
Pkt.WriteByte(a_Mode);
if (a_Mode != 1)
{
Pkt.WriteString(a_Objective);
Pkt.WriteInt((int) a_Score);
}
}
void cProtocol172::SendDisplayObjective(const AString & a_Objective, cScoreboard::eDisplaySlot a_Display)
{
ASSERT(m_State == 3); // In game mode?
cPacketizer Pkt(*this, 0x3d);
Pkt.WriteByte((int) a_Display);
Pkt.WriteString(a_Objective);
}
void cProtocol172::SendSoundEffect(const AString & a_SoundName, double a_X, double a_Y, double a_Z, float a_Volume, float a_Pitch)
{
ASSERT(m_State == 3); // In game mode?
cPacketizer Pkt(*this, 0x29); // Sound Effect packet
Pkt.WriteString(a_SoundName);
Pkt.WriteInt((int)(a_X * 8.0));
Pkt.WriteInt((int)(a_Y * 8.0));
Pkt.WriteInt((int)(a_Z * 8.0));
Pkt.WriteFloat(a_Volume);
Pkt.WriteByte((Byte)(a_Pitch * 63));
}
void cProtocol172::SendSoundParticleEffect(int a_EffectID, int a_SrcX, int a_SrcY, int a_SrcZ, int a_Data)
{
ASSERT(m_State == 3); // In game mode?
cPacketizer Pkt(*this, 0x28); // Effect packet
Pkt.WriteInt(a_EffectID);
Pkt.WriteInt(a_SrcX);
Pkt.WriteByte(a_SrcY);
Pkt.WriteInt(a_SrcZ);
Pkt.WriteInt(a_Data);
Pkt.WriteBool(false);
}
void cProtocol172::SendSpawnFallingBlock(const cFallingBlock & a_FallingBlock)
{
ASSERT(m_State == 3); // In game mode?
cPacketizer Pkt(*this, 0x0e); // Spawn Object packet
Pkt.WriteVarInt(a_FallingBlock.GetUniqueID());
Pkt.WriteByte(70); // Falling block
Pkt.WriteFPInt(a_FallingBlock.GetPosX());
Pkt.WriteFPInt(a_FallingBlock.GetPosY());
Pkt.WriteFPInt(a_FallingBlock.GetPosZ());
Pkt.WriteByteAngle(a_FallingBlock.GetYaw());
Pkt.WriteByteAngle(a_FallingBlock.GetPitch());
Pkt.WriteInt(((int)a_FallingBlock.GetBlockType()) | (((int)a_FallingBlock.GetBlockMeta()) << 16)); // Or 0x10
Pkt.WriteShort((short)(a_FallingBlock.GetSpeedX() * 400));
Pkt.WriteShort((short)(a_FallingBlock.GetSpeedY() * 400));
Pkt.WriteShort((short)(a_FallingBlock.GetSpeedZ() * 400));
}
void cProtocol172::SendSpawnMob(const cMonster & a_Mob)
{
ASSERT(m_State == 3); // In game mode?
cPacketizer Pkt(*this, 0x0f); // Spawn Mob packet
Pkt.WriteVarInt(a_Mob.GetUniqueID());
Pkt.WriteByte((Byte)a_Mob.GetMobType());
Pkt.WriteFPInt(a_Mob.GetPosX());
Pkt.WriteFPInt(a_Mob.GetPosY());
Pkt.WriteFPInt(a_Mob.GetPosZ());
Pkt.WriteByteAngle(a_Mob.GetPitch());
Pkt.WriteByteAngle(a_Mob.GetHeadYaw());
Pkt.WriteByteAngle(a_Mob.GetYaw());
Pkt.WriteShort((short)(a_Mob.GetSpeedX() * 400));
Pkt.WriteShort((short)(a_Mob.GetSpeedY() * 400));
Pkt.WriteShort((short)(a_Mob.GetSpeedZ() * 400));
Pkt.WriteEntityMetadata(a_Mob);
Pkt.WriteByte(0x7f); // Metadata terminator
}
void cProtocol172::SendSpawnObject(const cEntity & a_Entity, char a_ObjectType, int a_ObjectData, Byte a_Yaw, Byte a_Pitch)
{
ASSERT(m_State == 3); // In game mode?
cPacketizer Pkt(*this, 0xe); // Spawn Object packet
Pkt.WriteVarInt(a_Entity.GetUniqueID());
Pkt.WriteByte(a_ObjectType);
Pkt.WriteFPInt(a_Entity.GetPosX());
Pkt.WriteFPInt(a_Entity.GetPosY());
Pkt.WriteFPInt(a_Entity.GetPosZ());
Pkt.WriteByteAngle(a_Entity.GetPitch());
Pkt.WriteByteAngle(a_Entity.GetYaw());
Pkt.WriteInt(a_ObjectData);
if (a_ObjectData != 0)
{
Pkt.WriteShort((short)(a_Entity.GetSpeedX() * 400));
Pkt.WriteShort((short)(a_Entity.GetSpeedY() * 400));
Pkt.WriteShort((short)(a_Entity.GetSpeedZ() * 400));
}
}
void cProtocol172::SendSpawnVehicle(const cEntity & a_Vehicle, char a_VehicleType, char a_VehicleSubType)
{
ASSERT(m_State == 3); // In game mode?
cPacketizer Pkt(*this, 0xe); // Spawn Object packet
Pkt.WriteVarInt(a_Vehicle.GetUniqueID());
Pkt.WriteByte(a_VehicleType);
Pkt.WriteFPInt(a_Vehicle.GetPosX());
Pkt.WriteFPInt(a_Vehicle.GetPosY());
Pkt.WriteFPInt(a_Vehicle.GetPosZ());
Pkt.WriteByteAngle(a_Vehicle.GetPitch());
Pkt.WriteByteAngle(a_Vehicle.GetYaw());
Pkt.WriteInt(a_VehicleSubType);
if (a_VehicleSubType != 0)
{
Pkt.WriteShort((short)(a_Vehicle.GetSpeedX() * 400));
Pkt.WriteShort((short)(a_Vehicle.GetSpeedY() * 400));
Pkt.WriteShort((short)(a_Vehicle.GetSpeedZ() * 400));
}
}
void cProtocol172::SendStatistics(const cStatManager & a_Manager)
{
ASSERT(m_State == 3); // In game mode?
cPacketizer Pkt(*this, 0x37);
Pkt.WriteVarInt(statCount); // TODO 2014-05-11 xdot: Optimization: Send "dirty" statistics only
for (size_t i = 0; i < (size_t)statCount; ++i)
{
StatValue Value = a_Manager.GetValue((eStatistic) i);
const AString & StatName = cStatInfo::GetName((eStatistic) i);
Pkt.WriteString(StatName);
Pkt.WriteVarInt(Value);
}
}
void cProtocol172::SendTabCompletionResults(const AStringVector & a_Results)
{
ASSERT(m_State == 3); // In game mode?
cPacketizer Pkt(*this, 0x3a); // Tab-Complete packet
Pkt.WriteVarInt((int)a_Results.size());
for (AStringVector::const_iterator itr = a_Results.begin(), end = a_Results.end(); itr != end; ++itr)
{
Pkt.WriteString(*itr);
}
}
void cProtocol172::SendTeleportEntity(const cEntity & a_Entity)
{
ASSERT(m_State == 3); // In game mode?
cPacketizer Pkt(*this, 0x18);
Pkt.WriteInt(a_Entity.GetUniqueID());
Pkt.WriteFPInt(a_Entity.GetPosX());
Pkt.WriteFPInt(a_Entity.GetPosY());
Pkt.WriteFPInt(a_Entity.GetPosZ());
Pkt.WriteByteAngle(a_Entity.GetYaw());
Pkt.WriteByteAngle(a_Entity.GetPitch());
}
void cProtocol172::SendThunderbolt(int a_BlockX, int a_BlockY, int a_BlockZ)
{
ASSERT(m_State == 3); // In game mode?
cPacketizer Pkt(*this, 0x2c); // Spawn Global Entity packet
Pkt.WriteVarInt(0); // EntityID = 0, always
Pkt.WriteByte(1); // Type = Thunderbolt
Pkt.WriteFPInt(a_BlockX);
Pkt.WriteFPInt(a_BlockY);
Pkt.WriteFPInt(a_BlockZ);
}
void cProtocol172::SendTimeUpdate(Int64 a_WorldAge, Int64 a_TimeOfDay, bool a_DoDaylightCycle)
{
ASSERT(m_State == 3); // In game mode?
if (!a_DoDaylightCycle)
{
// When writing a "-" before the number the client ignores it but it will stop the client-side time expiration.
a_TimeOfDay = std::min(-a_TimeOfDay, -1LL);
}
cPacketizer Pkt(*this, 0x03);
Pkt.WriteInt64(a_WorldAge);
Pkt.WriteInt64(a_TimeOfDay);
}
void cProtocol172::SendUnloadChunk(int a_ChunkX, int a_ChunkZ)
{
ASSERT(m_State == 3); // In game mode?
cPacketizer Pkt(*this, 0x21); // Chunk Data packet
Pkt.WriteInt(a_ChunkX);
Pkt.WriteInt(a_ChunkZ);
Pkt.WriteBool(true);
Pkt.WriteShort(0); // Primary bitmap
Pkt.WriteShort(0); // Add bitmap
Pkt.WriteInt(0); // Compressed data size
}
void cProtocol172::SendUpdateBlockEntity(cBlockEntity & a_BlockEntity)
{
ASSERT(m_State == 3); // In game mode?
cPacketizer Pkt(*this, 0x35); // Update tile entity packet
Pkt.WriteInt(a_BlockEntity.GetPosX());
Pkt.WriteShort(a_BlockEntity.GetPosY());
Pkt.WriteInt(a_BlockEntity.GetPosZ());
Byte Action = 0;
switch (a_BlockEntity.GetBlockType())
{
case E_BLOCK_MOB_SPAWNER: Action = 1; break; // Update mob spawner spinny mob thing
case E_BLOCK_COMMAND_BLOCK: Action = 2; break; // Update command block text
case E_BLOCK_BEACON: Action = 3; break; // Update beacon entity
case E_BLOCK_HEAD: Action = 4; break; // Update Mobhead entity
case E_BLOCK_FLOWER_POT: Action = 5; break; // Update flower pot
default: ASSERT(!"Unhandled or unimplemented BlockEntity update request!"); break;
}
Pkt.WriteByte(Action);
Pkt.WriteBlockEntity(a_BlockEntity);
}
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)
{
ASSERT(m_State == 3); // In game mode?
ASSERT((a_BlockY >= 0) && (a_BlockY < cChunkDef::Height));
cPacketizer Pkt(*this, 0x33);
Pkt.WriteInt(a_BlockX);
Pkt.WriteShort((short)a_BlockY);
Pkt.WriteInt(a_BlockZ);
// Need to send only up to 15 chars, otherwise the client crashes (#598)
Pkt.WriteString(a_Line1.substr(0, 15));
Pkt.WriteString(a_Line2.substr(0, 15));
Pkt.WriteString(a_Line3.substr(0, 15));
Pkt.WriteString(a_Line4.substr(0, 15));
}
void cProtocol172::SendUseBed(const cEntity & a_Entity, int a_BlockX, int a_BlockY, int a_BlockZ)
{
ASSERT(m_State == 3); // In game mode?
cPacketizer Pkt(*this, 0x0a);
Pkt.WriteInt(a_Entity.GetUniqueID());
Pkt.WriteInt(a_BlockX);
Pkt.WriteByte((Byte)a_BlockY);
Pkt.WriteInt(a_BlockZ);
}
void cProtocol172::SendWeather(eWeather a_Weather)
{
ASSERT(m_State == 3); // In game mode?
{
cPacketizer Pkt(*this, 0x2b); // Change Game State packet
Pkt.WriteByte((a_Weather == wSunny) ? 1 : 2); // End rain / begin rain
Pkt.WriteFloat(0); // Unused for weather
}
// TODO: Fade effect, somehow
}
void cProtocol172::SendWholeInventory(const cWindow & a_Window)
{
ASSERT(m_State == 3); // In game mode?
cPacketizer Pkt(*this, 0x30); // Window Items packet
Pkt.WriteChar(a_Window.GetWindowID());
Pkt.WriteShort(a_Window.GetNumSlots());
cItems Slots;
a_Window.GetSlots(*(m_Client->GetPlayer()), Slots);
for (cItems::const_iterator itr = Slots.begin(), end = Slots.end(); itr != end; ++itr)
{
Pkt.WriteItem(*itr);
} // for itr - Slots[]
}
void cProtocol172::SendWindowClose(const cWindow & a_Window)
{
ASSERT(m_State == 3); // In game mode?
cPacketizer Pkt(*this, 0x2e);
Pkt.WriteChar(a_Window.GetWindowID());
}
void cProtocol172::SendWindowOpen(const cWindow & a_Window)
{
ASSERT(m_State == 3); // In game mode?
if (a_Window.GetWindowType() < 0)
{
// Do not send this packet for player inventory windows
return;
}
cPacketizer Pkt(*this, 0x2d);
Pkt.WriteChar(a_Window.GetWindowID());
Pkt.WriteChar(a_Window.GetWindowType());
Pkt.WriteString(a_Window.GetWindowTitle());
Pkt.WriteChar(a_Window.GetNumNonInventorySlots());
Pkt.WriteBool(true);
if (a_Window.GetWindowType() == cWindow::wtAnimalChest)
{
Pkt.WriteInt(0); // TODO: The animal's EntityID
}
}
void cProtocol172::SendWindowProperty(const cWindow & a_Window, int a_Property, int a_Value)
{
ASSERT(m_State == 3); // In game mode?
cPacketizer Pkt(*this, 0x31); // Window Property packet
Pkt.WriteChar(a_Window.GetWindowID());
Pkt.WriteShort(a_Property);
Pkt.WriteShort(a_Value);
}
void cProtocol172::AddReceivedData(const char * a_Data, size_t a_Size)
{
// Write the incoming data into the comm log file:
if (g_ShouldLogCommIn)
{
if (m_ReceivedData.GetReadableSpace() > 0)
{
AString AllData;
size_t OldReadableSpace = m_ReceivedData.GetReadableSpace();
m_ReceivedData.ReadAll(AllData);
m_ReceivedData.ResetRead();
m_ReceivedData.SkipRead(m_ReceivedData.GetReadableSpace() - OldReadableSpace);
ASSERT(m_ReceivedData.GetReadableSpace() == OldReadableSpace);
AString Hex;
CreateHexDump(Hex, AllData.data(), AllData.size(), 16);
m_CommLogFile.Printf("Incoming data, " SIZE_T_FMT " (0x" SIZE_T_FMT_HEX ") unparsed bytes already present in buffer:\n%s\n",
AllData.size(), AllData.size(), Hex.c_str()
);
}
AString Hex;
CreateHexDump(Hex, a_Data, a_Size, 16);
m_CommLogFile.Printf("Incoming data: %d (0x%x) bytes: \n%s\n",
(unsigned)a_Size, (unsigned)a_Size, Hex.c_str()
);
m_CommLogFile.Flush();
}
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:
for (;;)
{
UInt32 PacketLen;
if (!m_ReceivedData.ReadVarInt(PacketLen))
{
// Not enough data
m_ReceivedData.ResetRead();
break;
}
if (!m_ReceivedData.CanReadBytes(PacketLen))
{
// The full packet hasn't been received yet
m_ReceivedData.ResetRead();
break;
}
cByteBuffer bb(PacketLen + 1);
VERIFY(m_ReceivedData.ReadToByteBuffer(bb, (int)PacketLen));
m_ReceivedData.CommitRead();
// Write one NUL extra, so that we can detect over-reads
bb.Write("\0", 1);
UInt32 PacketType;
if (!bb.ReadVarInt(PacketType))
{
// Not enough data
break;
}
// Log the packet info into the comm log file:
if (g_ShouldLogCommIn)
{
AString PacketData;
bb.ReadAll(PacketData);
bb.ResetRead();
bb.ReadVarInt(PacketType);
ASSERT(PacketData.size() > 0);
PacketData.resize(PacketData.size() - 1);
AString PacketDataHex;
CreateHexDump(PacketDataHex, PacketData.data(), PacketData.size(), 16);
m_CommLogFile.Printf("Next incoming packet is type %u (0x%x), length %u (0x%x) at state %d. Payload:\n%s\n",
PacketType, PacketType, PacketLen, PacketLen, m_State, PacketDataHex.c_str()
);
}
if (!HandlePacket(bb, PacketType))
{
// Unknown packet, already been reported, but without the length. Log the length here:
LOGWARNING("Unhandled packet: type 0x%x, state %d, length %u", PacketType, m_State, PacketLen);
#ifdef _DEBUG
// Dump the packet contents into the log:
bb.ResetRead();
AString Packet;
bb.ReadAll(Packet);
Packet.resize(Packet.size() - 1); // Drop the final NUL pushed there for over-read detection
AString Out;
CreateHexDump(Out, Packet.data(), (int)Packet.size(), 24);
LOGD("Packet contents:\n%s", Out.c_str());
#endif // _DEBUG
// Put a message in the comm log:
if (g_ShouldLogCommIn)
{
m_CommLogFile.Printf("^^^^^^ Unhandled packet ^^^^^^\n\n\n");
}
return;
}
if (bb.GetReadableSpace() != 1)
{
// Read more or less than packet length, report as error
LOGWARNING("Protocol 1.7: Wrong number of bytes read for packet 0x%x, state %d. Read " SIZE_T_FMT " bytes, packet contained %u bytes",
PacketType, m_State, bb.GetUsedSpace() - bb.GetReadableSpace(), PacketLen
);
// Put a message in the comm log:
if (g_ShouldLogCommIn)
{
m_CommLogFile.Printf("^^^^^^ Wrong number of bytes read for this packet (exp %d left, got " SIZE_T_FMT " left) ^^^^^^\n\n\n",
1, bb.GetReadableSpace()
);
m_CommLogFile.Flush();
}
ASSERT(!"Read wrong number of bytes!");
m_Client->PacketError(PacketType);
}
} // for (ever)
// Log any leftover bytes into the logfile:
if (g_ShouldLogCommIn && (m_ReceivedData.GetReadableSpace() > 0))
{
AString AllData;
size_t OldReadableSpace = m_ReceivedData.GetReadableSpace();
m_ReceivedData.ReadAll(AllData);
m_ReceivedData.ResetRead();
m_ReceivedData.SkipRead(m_ReceivedData.GetReadableSpace() - OldReadableSpace);
ASSERT(m_ReceivedData.GetReadableSpace() == OldReadableSpace);
AString Hex;
CreateHexDump(Hex, AllData.data(), AllData.size(), 16);
m_CommLogFile.Printf("There are " SIZE_T_FMT " (0x" SIZE_T_FMT_HEX ") bytes of non-parse-able data left in the buffer:\n%s",
m_ReceivedData.GetReadableSpace(), m_ReceivedData.GetReadableSpace(), Hex.c_str()
);
m_CommLogFile.Flush();
}
}
bool cProtocol172::HandlePacket(cByteBuffer & a_ByteBuffer, UInt32 a_PacketType)
{
switch (m_State)
{
case 1:
{
// Status
switch (a_PacketType)
{
case 0x00: HandlePacketStatusRequest(a_ByteBuffer); return true;
case 0x01: HandlePacketStatusPing (a_ByteBuffer); return true;
}
break;
}
case 2:
{
// Login
switch (a_PacketType)
{
case 0x00: HandlePacketLoginStart (a_ByteBuffer); return true;
case 0x01: HandlePacketLoginEncryptionResponse(a_ByteBuffer); return true;
}
break;
}
case 3:
{
// Game
switch (a_PacketType)
{
case 0x00: HandlePacketKeepAlive (a_ByteBuffer); return true;
case 0x01: HandlePacketChatMessage (a_ByteBuffer); return true;
case 0x02: HandlePacketUseEntity (a_ByteBuffer); return true;
case 0x03: HandlePacketPlayer (a_ByteBuffer); return true;
case 0x04: HandlePacketPlayerPos (a_ByteBuffer); return true;
case 0x05: HandlePacketPlayerLook (a_ByteBuffer); return true;
case 0x06: HandlePacketPlayerPosLook (a_ByteBuffer); return true;
case 0x07: HandlePacketBlockDig (a_ByteBuffer); return true;
case 0x08: HandlePacketBlockPlace (a_ByteBuffer); return true;
case 0x09: HandlePacketSlotSelect (a_ByteBuffer); return true;
case 0x0a: HandlePacketAnimation (a_ByteBuffer); return true;
case 0x0b: HandlePacketEntityAction (a_ByteBuffer); return true;
case 0x0c: HandlePacketSteerVehicle (a_ByteBuffer); return true;
case 0x0d: HandlePacketWindowClose (a_ByteBuffer); return true;
case 0x0e: HandlePacketWindowClick (a_ByteBuffer); return true;
case 0x0f: // Confirm transaction - not used in MCS
case 0x10: HandlePacketCreativeInventoryAction(a_ByteBuffer); return true;
case 0x11: HandlePacketEnchantItem (a_ByteBuffer); return true;
case 0x12: HandlePacketUpdateSign (a_ByteBuffer); return true;
case 0x13: HandlePacketPlayerAbilities (a_ByteBuffer); return true;
case 0x14: HandlePacketTabComplete (a_ByteBuffer); return true;
case 0x15: HandlePacketClientSettings (a_ByteBuffer); return true;
case 0x16: HandlePacketClientStatus (a_ByteBuffer); return true;
case 0x17: HandlePacketPluginMessage (a_ByteBuffer); return true;
}
break;
}
default:
{
// Received a packet in an unknown state, report:
LOGWARNING("Received a packet in an unknown protocol state %d. Ignoring further packets.", m_State);
// Cannot kick the client - we don't know this state and thus the packet number for the kick packet
// Switch to a state when all further packets are silently ignored:
m_State = 255;
return false;
}
case 255:
{
// This is the state used for "not processing packets anymore" when we receive a bad packet from a client.
// Do not output anything (the caller will do that for us), just return failure
return false;
}
} // switch (m_State)
// Unknown packet type, report to the ClientHandle:
m_Client->PacketUnknown(a_PacketType);
return false;
}
void cProtocol172::HandlePacketStatusPing(cByteBuffer & a_ByteBuffer)
{
HANDLE_READ(a_ByteBuffer, ReadBEInt64, Int64, Timestamp);
cPacketizer Pkt(*this, 0x01); // Ping packet
Pkt.WriteInt64(Timestamp);
}
void cProtocol172::HandlePacketStatusRequest(cByteBuffer & a_ByteBuffer)
{
cServer * Server = cRoot::Get()->GetServer();
AString ServerDescription = Server->GetDescription();
int NumPlayers = Server->GetNumPlayers();
int MaxPlayers = Server->GetMaxPlayers();
AString Favicon = Server->GetFaviconData();
cRoot::Get()->GetPluginManager()->CallHookServerPing(*m_Client, ServerDescription, NumPlayers, MaxPlayers, Favicon);
// Version:
Json::Value Version;
Version["name"] = "1.7.2";
Version["protocol"] = 4;
// Players:
Json::Value Players;
Players["online"] = NumPlayers;
Players["max"] = MaxPlayers;
// TODO: Add "sample"
// Description:
Json::Value Description;
Description["text"] = ServerDescription.c_str();
// Create the response:
Json::Value ResponseValue;
ResponseValue["version"] = Version;
ResponseValue["players"] = Players;
ResponseValue["description"] = Description;
if (!Favicon.empty())
{
ResponseValue["favicon"] = Printf("data:image/png;base64,%s", Favicon.c_str());
}
Json::StyledWriter Writer;
AString Response = Writer.write(ResponseValue);
cPacketizer Pkt(*this, 0x00); // Response packet
Pkt.WriteString(Response);
}
void cProtocol172::HandlePacketLoginEncryptionResponse(cByteBuffer & a_ByteBuffer)
{
short EncKeyLength, EncNonceLength;
a_ByteBuffer.ReadBEShort(EncKeyLength);
AString EncKey;
if (!a_ByteBuffer.ReadString(EncKey, EncKeyLength))
{
return;
}
a_ByteBuffer.ReadBEShort(EncNonceLength);
AString EncNonce;
if (!a_ByteBuffer.ReadString(EncNonce, EncNonceLength))
{
return;
}
if ((EncKeyLength > MAX_ENC_LEN) || (EncNonceLength > MAX_ENC_LEN))
{
LOGD("Too long encryption");
m_Client->Kick("Hacked client");
return;
}
// Decrypt EncNonce using privkey
cRsaPrivateKey & rsaDecryptor = cRoot::Get()->GetServer()->GetPrivateKey();
Int32 DecryptedNonce[MAX_ENC_LEN / sizeof(Int32)];
int res = rsaDecryptor.Decrypt((const Byte *)EncNonce.data(), EncNonce.size(), (Byte *)DecryptedNonce, sizeof(DecryptedNonce));
if (res != 4)
{
LOGD("Bad nonce length: got %d, exp %d", res, 4);
m_Client->Kick("Hacked client");
return;
}
if (ntohl(DecryptedNonce[0]) != (unsigned)(uintptr_t)this)
{
LOGD("Bad nonce value");
m_Client->Kick("Hacked client");
return;
}
// Decrypt the symmetric encryption key using privkey:
Byte DecryptedKey[MAX_ENC_LEN];
res = rsaDecryptor.Decrypt((const Byte *)EncKey.data(), EncKey.size(), DecryptedKey, sizeof(DecryptedKey));
if (res != 16)
{
LOGD("Bad key length");
m_Client->Kick("Hacked client");
return;
}
StartEncryption(DecryptedKey);
m_Client->HandleLogin(4, m_Client->GetUsername());
}
void cProtocol172::HandlePacketLoginStart(cByteBuffer & a_ByteBuffer)
{
AString Username;
if (!a_ByteBuffer.ReadVarUTF8String(Username))
{
m_Client->Kick("Bad username");
return;
}
if (!m_Client->HandleHandshake(Username))
{
// The client is not welcome here, they have been sent a Kick packet already
return;
}
cServer * Server = cRoot::Get()->GetServer();
// If auth is required, then send the encryption request:
if (Server->ShouldAuthenticate())
{
cPacketizer Pkt(*this, 0x01);
Pkt.WriteString(Server->GetServerID());
const AString & PubKeyDer = Server->GetPublicKeyDER();
Pkt.WriteShort((short)PubKeyDer.size());
Pkt.WriteBuf(PubKeyDer.data(), PubKeyDer.size());
Pkt.WriteShort(4);
Pkt.WriteInt((int)(intptr_t)this); // Using 'this' as the cryptographic nonce, so that we don't have to generate one each time :)
m_Client->SetUsername(Username);
return;
}
m_Client->HandleLogin(4, Username);
}
void cProtocol172::HandlePacketAnimation(cByteBuffer & a_ByteBuffer)
{
HANDLE_READ(a_ByteBuffer, ReadBEInt, int, EntityID);
HANDLE_READ(a_ByteBuffer, ReadByte, Byte, Animation);
m_Client->HandleAnimation(Animation);
}
void cProtocol172::HandlePacketBlockDig(cByteBuffer & a_ByteBuffer)
{
HANDLE_READ(a_ByteBuffer, ReadByte, Byte, Status);
HANDLE_READ(a_ByteBuffer, ReadBEInt, int, BlockX);
HANDLE_READ(a_ByteBuffer, ReadByte, Byte, BlockY);
HANDLE_READ(a_ByteBuffer, ReadBEInt, int, BlockZ);
HANDLE_READ(a_ByteBuffer, ReadChar, char, Face);
m_Client->HandleLeftClick(BlockX, BlockY, BlockZ, static_cast<eBlockFace>(Face), Status);
}
void cProtocol172::HandlePacketBlockPlace(cByteBuffer & a_ByteBuffer)
{
HANDLE_READ(a_ByteBuffer, ReadBEInt, int, BlockX);
HANDLE_READ(a_ByteBuffer, ReadByte, Byte, BlockY);
HANDLE_READ(a_ByteBuffer, ReadBEInt, int, BlockZ);
HANDLE_READ(a_ByteBuffer, ReadChar, char, Face);
cItem Item;
ReadItem(a_ByteBuffer, Item);
HANDLE_READ(a_ByteBuffer, ReadByte, Byte, CursorX);
HANDLE_READ(a_ByteBuffer, ReadByte, Byte, CursorY);
HANDLE_READ(a_ByteBuffer, ReadByte, Byte, CursorZ);
m_Client->HandleRightClick(BlockX, BlockY, BlockZ, static_cast<eBlockFace>(Face), CursorX, CursorY, CursorZ, m_Client->GetPlayer()->GetEquippedItem());
}
void cProtocol172::HandlePacketChatMessage(cByteBuffer & a_ByteBuffer)
{
HANDLE_READ(a_ByteBuffer, ReadVarUTF8String, AString, Message);
m_Client->HandleChat(Message);
}
void cProtocol172::HandlePacketClientSettings(cByteBuffer & a_ByteBuffer)
{
HANDLE_READ(a_ByteBuffer, ReadVarUTF8String, AString, Locale);
HANDLE_READ(a_ByteBuffer, ReadByte, Byte, ViewDistance);
HANDLE_READ(a_ByteBuffer, ReadByte, Byte, ChatFlags);
HANDLE_READ(a_ByteBuffer, ReadByte, Byte, ChatColors);
HANDLE_READ(a_ByteBuffer, ReadByte, Byte, Difficulty);
HANDLE_READ(a_ByteBuffer, ReadByte, Byte, ShowCape);
m_Client->SetLocale(Locale);
// TODO: Do anything with the other values.
}
void cProtocol172::HandlePacketClientStatus(cByteBuffer & a_ByteBuffer)
{
HANDLE_READ(a_ByteBuffer, ReadByte, Byte, ActionID);
switch (ActionID)
{
case 0:
{
// Respawn
m_Client->HandleRespawn();
break;
}
case 1:
{
// Request stats
const cStatManager & Manager = m_Client->GetPlayer()->GetStatManager();
SendStatistics(Manager);
break;
}
case 2:
{
// Open Inventory achievement
m_Client->GetPlayer()->AwardAchievement(achOpenInv);
break;
}
}
}
void cProtocol172::HandlePacketCreativeInventoryAction(cByteBuffer & a_ByteBuffer)
{
HANDLE_READ(a_ByteBuffer, ReadBEShort, short, SlotNum);
cItem Item;
if (!ReadItem(a_ByteBuffer, Item))
{
return;
}
m_Client->HandleCreativeInventory(SlotNum, Item);
}
void cProtocol172::HandlePacketEntityAction(cByteBuffer & a_ByteBuffer)
{
HANDLE_READ(a_ByteBuffer, ReadBEInt, int, PlayerID);
HANDLE_READ(a_ByteBuffer, ReadByte, Byte, Action);
HANDLE_READ(a_ByteBuffer, ReadBEInt, int, JumpBoost);
switch (Action)
{
case 1: m_Client->HandleEntityCrouch(PlayerID, true); break; // Crouch
case 2: m_Client->HandleEntityCrouch(PlayerID, false); break; // Uncrouch
case 3: m_Client->HandleEntityLeaveBed(PlayerID); break; // Leave Bed
case 4: m_Client->HandleEntitySprinting(PlayerID, true); break; // Start sprinting
case 5: m_Client->HandleEntitySprinting(PlayerID, false); break; // Stop sprinting
}
}
void cProtocol172::HandlePacketKeepAlive(cByteBuffer & a_ByteBuffer)
{
HANDLE_READ(a_ByteBuffer, ReadBEInt, int, KeepAliveID);
m_Client->HandleKeepAlive(KeepAliveID);
}
void cProtocol172::HandlePacketPlayer(cByteBuffer & a_ByteBuffer)
{
HANDLE_READ(a_ByteBuffer, ReadBool, bool, IsOnGround);
// TODO: m_Client->HandlePlayerOnGround(IsOnGround);
}
void cProtocol172::HandlePacketPlayerAbilities(cByteBuffer & a_ByteBuffer)
{
HANDLE_READ(a_ByteBuffer, ReadByte, Byte, Flags);
HANDLE_READ(a_ByteBuffer, ReadBEFloat, float, FlyingSpeed);
HANDLE_READ(a_ByteBuffer, ReadBEFloat, float, WalkingSpeed);
bool IsFlying = false, CanFly = false;
if ((Flags & 2) != 0)
{
IsFlying = true;
}
if ((Flags & 4) != 0)
{
CanFly = true;
}
m_Client->HandlePlayerAbilities(CanFly, IsFlying, FlyingSpeed, WalkingSpeed);
}
void cProtocol172::HandlePacketPlayerLook(cByteBuffer & a_ByteBuffer)
{
HANDLE_READ(a_ByteBuffer, ReadBEFloat, float, Yaw);
HANDLE_READ(a_ByteBuffer, ReadBEFloat, float, Pitch);
HANDLE_READ(a_ByteBuffer, ReadBool, bool, IsOnGround);
m_Client->HandlePlayerLook(Yaw, Pitch, IsOnGround);
}
void cProtocol172::HandlePacketPlayerPos(cByteBuffer & a_ByteBuffer)
{
HANDLE_READ(a_ByteBuffer, ReadBEDouble, double, PosX);
HANDLE_READ(a_ByteBuffer, ReadBEDouble, double, PosY);
HANDLE_READ(a_ByteBuffer, ReadBEDouble, double, Stance);
HANDLE_READ(a_ByteBuffer, ReadBEDouble, double, PosZ);
HANDLE_READ(a_ByteBuffer, ReadBool, bool, IsOnGround);
m_Client->HandlePlayerPos(PosX, PosY, PosZ, Stance, IsOnGround);
}
void cProtocol172::HandlePacketPlayerPosLook(cByteBuffer & a_ByteBuffer)
{
HANDLE_READ(a_ByteBuffer, ReadBEDouble, double, PosX);
HANDLE_READ(a_ByteBuffer, ReadBEDouble, double, PosY);
HANDLE_READ(a_ByteBuffer, ReadBEDouble, double, Stance);
HANDLE_READ(a_ByteBuffer, ReadBEDouble, double, PosZ);
HANDLE_READ(a_ByteBuffer, ReadBEFloat, float, Yaw);
HANDLE_READ(a_ByteBuffer, ReadBEFloat, float, Pitch);
HANDLE_READ(a_ByteBuffer, ReadBool, bool, IsOnGround);
m_Client->HandlePlayerMoveLook(PosX, PosY, PosZ, Stance, Yaw, Pitch, IsOnGround);
}
void cProtocol172::HandlePacketPluginMessage(cByteBuffer & a_ByteBuffer)
{
HANDLE_READ(a_ByteBuffer, ReadVarUTF8String, AString, Channel);
HANDLE_READ(a_ByteBuffer, ReadBEShort, short, Length);
AString Data;
if (!a_ByteBuffer.ReadString(Data, Length))
{
return;
}
m_Client->HandlePluginMessage(Channel, Data);
}
void cProtocol172::HandlePacketSlotSelect(cByteBuffer & a_ByteBuffer)
{
HANDLE_READ(a_ByteBuffer, ReadBEShort, short, SlotNum);
m_Client->HandleSlotSelected(SlotNum);
}
void cProtocol172::HandlePacketSteerVehicle(cByteBuffer & a_ByteBuffer)
{
HANDLE_READ(a_ByteBuffer, ReadBEFloat, float, Forward);
HANDLE_READ(a_ByteBuffer, ReadBEFloat, float, Sideways);
HANDLE_READ(a_ByteBuffer, ReadBool, bool, ShouldJump);
HANDLE_READ(a_ByteBuffer, ReadBool, bool, ShouldUnmount);
if (ShouldUnmount)
{
m_Client->HandleUnmount();
}
else
{
m_Client->HandleSteerVehicle(Forward, Sideways);
}
}
void cProtocol172::HandlePacketTabComplete(cByteBuffer & a_ByteBuffer)
{
HANDLE_READ(a_ByteBuffer, ReadVarUTF8String, AString, Text);
m_Client->HandleTabCompletion(Text);
}
void cProtocol172::HandlePacketUpdateSign(cByteBuffer & a_ByteBuffer)
{
HANDLE_READ(a_ByteBuffer, ReadBEInt, int, BlockX);
HANDLE_READ(a_ByteBuffer, ReadBEShort, short, BlockY);
HANDLE_READ(a_ByteBuffer, ReadBEInt, int, BlockZ);
HANDLE_READ(a_ByteBuffer, ReadVarUTF8String, AString, Line1);
HANDLE_READ(a_ByteBuffer, ReadVarUTF8String, AString, Line2);
HANDLE_READ(a_ByteBuffer, ReadVarUTF8String, AString, Line3);
HANDLE_READ(a_ByteBuffer, ReadVarUTF8String, AString, Line4);
m_Client->HandleUpdateSign(BlockX, BlockY, BlockZ, Line1, Line2, Line3, Line4);
}
void cProtocol172::HandlePacketUseEntity(cByteBuffer & a_ByteBuffer)
{
HANDLE_READ(a_ByteBuffer, ReadBEInt, int, EntityID);
HANDLE_READ(a_ByteBuffer, ReadByte, Byte, MouseButton);
m_Client->HandleUseEntity(EntityID, (MouseButton == 1));
}
void cProtocol172::HandlePacketEnchantItem(cByteBuffer & a_ByteBuffer)
{
HANDLE_READ(a_ByteBuffer, ReadByte, Byte, WindowID);
HANDLE_READ(a_ByteBuffer, ReadByte, Byte, Enchantment);
m_Client->HandleEnchantItem(WindowID, Enchantment);
}
void cProtocol172::HandlePacketWindowClick(cByteBuffer & a_ByteBuffer)
{
HANDLE_READ(a_ByteBuffer, ReadChar, char, WindowID);
HANDLE_READ(a_ByteBuffer, ReadBEShort, short, SlotNum);
HANDLE_READ(a_ByteBuffer, ReadByte, Byte, Button);
HANDLE_READ(a_ByteBuffer, ReadBEShort, short, TransactionID);
HANDLE_READ(a_ByteBuffer, ReadByte, Byte, Mode);
cItem Item;
ReadItem(a_ByteBuffer, Item);
// Convert Button, Mode, SlotNum and HeldItem into eClickAction:
eClickAction Action;
switch ((Mode << 8) | Button)
{
case 0x0000: Action = (SlotNum != -999) ? caLeftClick : caLeftClickOutside; break;
case 0x0001: Action = (SlotNum != -999) ? caRightClick : caRightClickOutside; break;
case 0x0100: Action = caShiftLeftClick; break;
case 0x0101: Action = caShiftRightClick; break;
case 0x0200: Action = caNumber1; break;
case 0x0201: Action = caNumber2; break;
case 0x0202: Action = caNumber3; break;
case 0x0203: Action = caNumber4; break;
case 0x0204: Action = caNumber5; break;
case 0x0205: Action = caNumber6; break;
case 0x0206: Action = caNumber7; break;
case 0x0207: Action = caNumber8; break;
case 0x0208: Action = caNumber9; break;
case 0x0300: Action = caMiddleClick; break;
case 0x0400: Action = (SlotNum == -999) ? caLeftClickOutsideHoldNothing : caDropKey; break;
case 0x0401: Action = (SlotNum == -999) ? caRightClickOutsideHoldNothing : caCtrlDropKey; break;
case 0x0500: Action = (SlotNum == -999) ? caLeftPaintBegin : caUnknown; break;
case 0x0501: Action = (SlotNum != -999) ? caLeftPaintProgress : caUnknown; break;
case 0x0502: Action = (SlotNum == -999) ? caLeftPaintEnd : caUnknown; break;
case 0x0504: Action = (SlotNum == -999) ? caRightPaintBegin : caUnknown; break;
case 0x0505: Action = (SlotNum != -999) ? caRightPaintProgress : caUnknown; break;
case 0x0506: Action = (SlotNum == -999) ? caRightPaintEnd : caUnknown; break;
case 0x0600: Action = caDblClick; break;
default:
{
LOGWARNING("Unhandled window click mode / button combination: %d (0x%x)", (Mode << 8) | Button, (Mode << 8) | Button);
Action = caUnknown;
break;
}
}
m_Client->HandleWindowClick(WindowID, SlotNum, Action, Item);
}
void cProtocol172::HandlePacketWindowClose(cByteBuffer & a_ByteBuffer)
{
HANDLE_READ(a_ByteBuffer, ReadChar, char, WindowID);
m_Client->HandleWindowClose(WindowID);
}
void cProtocol172::WritePacket(cByteBuffer & a_Packet)
{
cCSLock Lock(m_CSPacket);
AString Pkt;
a_Packet.ReadAll(Pkt);
WriteVarInt((UInt32)Pkt.size());
SendData(Pkt.data(), Pkt.size());
Flush();
}
void cProtocol172::SendData(const char * a_Data, size_t a_Size)
{
if (m_IsEncrypted)
{
Byte Encrypted[8192]; // Larger buffer, we may be sending lots of data (chunks)
while (a_Size > 0)
{
size_t 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);
}
}
bool cProtocol172::ReadItem(cByteBuffer & a_ByteBuffer, cItem & a_Item)
{
HANDLE_PACKET_READ(a_ByteBuffer, ReadBEShort, short, ItemType);
if (ItemType == -1)
{
// The item is empty, no more data follows
a_Item.Empty();
return true;
}
a_Item.m_ItemType = ItemType;
HANDLE_PACKET_READ(a_ByteBuffer, ReadChar, char, ItemCount);
HANDLE_PACKET_READ(a_ByteBuffer, ReadBEShort, short, ItemDamage);
a_Item.m_ItemCount = ItemCount;
a_Item.m_ItemDamage = ItemDamage;
if (ItemCount <= 0)
{
a_Item.Empty();
}
HANDLE_PACKET_READ(a_ByteBuffer, ReadBEShort, short, MetadataLength);
if (MetadataLength <= 0)
{
return true;
}
// Read the metadata
AString Metadata;
if (!a_ByteBuffer.ReadString(Metadata, MetadataLength))
{
return false;
}
ParseItemMetadata(a_Item, Metadata);
return true;
}
void cProtocol172::ParseItemMetadata(cItem & a_Item, const AString & a_Metadata)
{
// Uncompress the GZIPped data:
AString Uncompressed;
if (UncompressStringGZIP(a_Metadata.data(), a_Metadata.size(), Uncompressed) != Z_OK)
{
AString HexDump;
CreateHexDump(HexDump, a_Metadata.data(), a_Metadata.size(), 16);
LOGWARNING("Cannot unGZIP item metadata (" SIZE_T_FMT " bytes):\n%s", a_Metadata.size(), HexDump.c_str());
return;
}
// Parse into NBT:
cParsedNBT NBT(Uncompressed.data(), Uncompressed.size());
if (!NBT.IsValid())
{
AString HexDump;
CreateHexDump(HexDump, Uncompressed.data(), Uncompressed.size(), 16);
LOGWARNING("Cannot parse NBT item metadata: (" SIZE_T_FMT " bytes)\n%s", Uncompressed.size(), HexDump.c_str());
return;
}
// Load enchantments and custom display names from the NBT data:
for (int tag = NBT.GetFirstChild(NBT.GetRoot()); tag >= 0; tag = NBT.GetNextSibling(tag))
{
AString TagName = NBT.GetName(tag);
switch (NBT.GetType(tag))
{
case TAG_List:
{
if ((TagName == "ench") || (TagName == "StoredEnchantments")) // Enchantments tags
{
EnchantmentSerializer::ParseFromNBT(a_Item.m_Enchantments, NBT, tag);
}
break;
}
case TAG_Compound:
{
if (TagName == "display") // Custom name and lore tag
{
for (int displaytag = NBT.GetFirstChild(tag); displaytag >= 0; displaytag = NBT.GetNextSibling(displaytag))
{
if ((NBT.GetType(displaytag) == TAG_String) && (NBT.GetName(displaytag) == "Name")) // Custon name tag
{
a_Item.m_CustomName = NBT.GetString(displaytag);
}
else if ((NBT.GetType(displaytag) == TAG_List) && (NBT.GetName(displaytag) == "Lore")) // Lore tag
{
AString Lore;
for (int loretag = NBT.GetFirstChild(displaytag); loretag >= 0; loretag = NBT.GetNextSibling(loretag)) // Loop through array of strings
{
AppendPrintf(Lore, "%s`", NBT.GetString(loretag).c_str()); // Append the lore with a grave accent/backtick, used internally by MCS to display a new line in the client; don't forget to c_str ;)
}
a_Item.m_Lore = Lore;
}
}
}
else if ((TagName == "Fireworks") || (TagName == "Explosion"))
{
cFireworkItem::ParseFromNBT(a_Item.m_FireworkItem, NBT, tag, (ENUM_ITEM_ID)a_Item.m_ItemType);
}
break;
}
case TAG_Int:
{
if (TagName == "RepairCost")
{
a_Item.m_RepairCost = NBT.GetInt(tag);
}
}
default: LOGD("Unimplemented NBT data when parsing!"); break;
}
}
}
void cProtocol172::StartEncryption(const Byte * a_Key)
{
m_Encryptor.Init(a_Key, a_Key);
m_Decryptor.Init(a_Key, a_Key);
m_IsEncrypted = true;
// Prepare the m_AuthServerID:
cSha1Checksum Checksum;
cServer * Server = cRoot::Get()->GetServer();
const AString & ServerID = Server->GetServerID();
Checksum.Update((const Byte *)ServerID.c_str(), ServerID.length());
Checksum.Update(a_Key, 16);
Checksum.Update((const Byte *)Server->GetPublicKeyDER().data(), Server->GetPublicKeyDER().size());
Byte Digest[20];
Checksum.Finalize(Digest);
cSha1Checksum::DigestToJava(Digest, m_AuthServerID);
}
void cProtocol172::AddChatPartStyle(Json::Value & a_Value, const AString & a_PartStyle)
{
size_t len = a_PartStyle.length();
for (size_t i = 0; i < len; i++)
{
switch (a_PartStyle[i])
{
case 'b':
{
// bold
a_Value["bold"] = Json::Value(true);
break;
}
case 'i':
{
// italic
a_Value["italic"] = Json::Value(true);
break;
}
case 'u':
{
// Underlined
a_Value["underlined"] = Json::Value(true);
break;
}
case 's':
{
// strikethrough
a_Value["strikethrough"] = Json::Value(true);
break;
}
case 'o':
{
// obfuscated
a_Value["obfuscated"] = Json::Value(true);
break;
}
case '@':
{
// Color, specified by the next char:
i++;
if (i >= len)
{
// String too short, didn't contain a color
break;
}
switch (a_PartStyle[i])
{
case '0': a_Value["color"] = Json::Value("black"); break;
case '1': a_Value["color"] = Json::Value("dark_blue"); break;
case '2': a_Value["color"] = Json::Value("dark_green"); break;
case '3': a_Value["color"] = Json::Value("dark_aqua"); break;
case '4': a_Value["color"] = Json::Value("dark_red"); break;
case '5': a_Value["color"] = Json::Value("dark_purple"); break;
case '6': a_Value["color"] = Json::Value("gold"); break;
case '7': a_Value["color"] = Json::Value("gray"); break;
case '8': a_Value["color"] = Json::Value("dark_gray"); break;
case '9': a_Value["color"] = Json::Value("blue"); break;
case 'a': a_Value["color"] = Json::Value("green"); break;
case 'b': a_Value["color"] = Json::Value("aqua"); break;
case 'c': a_Value["color"] = Json::Value("red"); break;
case 'd': a_Value["color"] = Json::Value("light_purple"); break;
case 'e': a_Value["color"] = Json::Value("yellow"); break;
case 'f': a_Value["color"] = Json::Value("white"); break;
} // switch (color)
} // case '@'
} // switch (Style[i])
} // for i - a_PartStyle[]
}
////////////////////////////////////////////////////////////////////////////////
// cProtocol172::cPacketizer:
cProtocol172::cPacketizer::~cPacketizer()
{
AString DataToSend;
// Send the packet length
UInt32 PacketLen = (UInt32)m_Out.GetUsedSpace();
m_Protocol.m_OutPacketLenBuffer.WriteVarInt(PacketLen);
m_Protocol.m_OutPacketLenBuffer.ReadAll(DataToSend);
m_Protocol.SendData(DataToSend.data(), DataToSend.size());
m_Protocol.m_OutPacketLenBuffer.CommitRead();
// Send the packet data:
m_Out.ReadAll(DataToSend);
m_Protocol.SendData(DataToSend.data(), DataToSend.size());
m_Out.CommitRead();
// Log the comm into logfile:
if (g_ShouldLogCommOut)
{
AString Hex;
ASSERT(DataToSend.size() > 0);
CreateHexDump(Hex, DataToSend.data() + 1, DataToSend.size() - 1, 16);
m_Protocol.m_CommLogFile.Printf("Outgoing packet: type %d (0x%x), length %u (0x%x), state %d. Payload:\n%s\n",
DataToSend[0], DataToSend[0], PacketLen, PacketLen, m_Protocol.m_State, Hex.c_str()
);
}
}
void cProtocol172::cPacketizer::WriteItem(const cItem & a_Item)
{
short ItemType = a_Item.m_ItemType;
ASSERT(ItemType >= -1); // Check validity of packets in debug runtime
if (ItemType <= 0)
{
// Fix, to make sure no invalid values are sent.
ItemType = -1;
}
if (a_Item.IsEmpty())
{
WriteShort(-1);
return;
}
WriteShort(ItemType);
WriteByte (a_Item.m_ItemCount);
WriteShort(a_Item.m_ItemDamage);
if (a_Item.m_Enchantments.IsEmpty() && a_Item.IsBothNameAndLoreEmpty() && (a_Item.m_ItemType != E_ITEM_FIREWORK_ROCKET) && (a_Item.m_ItemType != E_ITEM_FIREWORK_STAR))
{
WriteShort(-1);
return;
}
// Send the enchantments and custom names:
cFastNBTWriter Writer;
if (a_Item.m_RepairCost != 0)
{
Writer.AddInt("RepairCost", a_Item.m_RepairCost);
}
if (!a_Item.m_Enchantments.IsEmpty())
{
const char * TagName = (a_Item.m_ItemType == E_ITEM_BOOK) ? "StoredEnchantments" : "ench";
EnchantmentSerializer::WriteToNBTCompound(a_Item.m_Enchantments, Writer, TagName);
}
if (!a_Item.IsBothNameAndLoreEmpty())
{
Writer.BeginCompound("display");
if (!a_Item.IsCustomNameEmpty())
{
Writer.AddString("Name", a_Item.m_CustomName.c_str());
}
if (!a_Item.IsLoreEmpty())
{
Writer.BeginList("Lore", TAG_String);
AStringVector Decls = StringSplit(a_Item.m_Lore, "`");
for (AStringVector::const_iterator itr = Decls.begin(), end = Decls.end(); itr != end; ++itr)
{
if (itr->empty())
{
// The decl is empty (two `s), ignore
continue;
}
Writer.AddString("", itr->c_str());
}
Writer.EndList();
}
Writer.EndCompound();
}
if ((a_Item.m_ItemType == E_ITEM_FIREWORK_ROCKET) || (a_Item.m_ItemType == E_ITEM_FIREWORK_STAR))
{
cFireworkItem::WriteToNBTCompound(a_Item.m_FireworkItem, Writer, (ENUM_ITEM_ID)a_Item.m_ItemType);
}
Writer.Finish();
AString Compressed;
CompressStringGZIP(Writer.GetResult().data(), Writer.GetResult().size(), Compressed);
WriteShort((short)Compressed.size());
WriteBuf(Compressed.data(), Compressed.size());
}
void cProtocol172::cPacketizer::WriteBlockEntity(const cBlockEntity & a_BlockEntity)
{
cFastNBTWriter Writer;
switch (a_BlockEntity.GetBlockType())
{
case E_BLOCK_BEACON:
{
cBeaconEntity & BeaconEntity = (cBeaconEntity &)a_BlockEntity;
Writer.AddInt("x", BeaconEntity.GetPosX());
Writer.AddInt("y", BeaconEntity.GetPosY());
Writer.AddInt("z", BeaconEntity.GetPosZ());
Writer.AddInt("Primary", BeaconEntity.GetPrimaryEffect());
Writer.AddInt("Secondary", BeaconEntity.GetSecondaryEffect());
Writer.AddInt("Levels", BeaconEntity.GetBeaconLevel());
Writer.AddString("id", "Beacon"); // "Tile Entity ID" - MC wiki; vanilla server always seems to send this though
break;
}
case E_BLOCK_COMMAND_BLOCK:
{
cCommandBlockEntity & CommandBlockEntity = (cCommandBlockEntity &)a_BlockEntity;
Writer.AddByte("TrackOutput", 1); // Neither I nor the MC wiki has any idea about this
Writer.AddInt("SuccessCount", CommandBlockEntity.GetResult());
Writer.AddInt("x", CommandBlockEntity.GetPosX());
Writer.AddInt("y", CommandBlockEntity.GetPosY());
Writer.AddInt("z", CommandBlockEntity.GetPosZ());
Writer.AddString("Command", CommandBlockEntity.GetCommand().c_str());
// You can set custom names for windows in Vanilla
// For a command block, this would be the 'name' prepended to anything it outputs into global chat
// MCS doesn't have this, so just leave it @ '@'. (geddit?)
Writer.AddString("CustomName", "@");
Writer.AddString("id", "Control"); // "Tile Entity ID" - MC wiki; vanilla server always seems to send this though
if (!CommandBlockEntity.GetLastOutput().empty())
{
AString Output;
Printf(Output, "{\"text\":\"%s\"}", CommandBlockEntity.GetLastOutput().c_str());
Writer.AddString("LastOutput", Output.c_str());
}
break;
}
case E_BLOCK_HEAD:
{
cMobHeadEntity & MobHeadEntity = (cMobHeadEntity &)a_BlockEntity;
Writer.AddInt("x", MobHeadEntity.GetPosX());
Writer.AddInt("y", MobHeadEntity.GetPosY());
Writer.AddInt("z", MobHeadEntity.GetPosZ());
Writer.AddByte("SkullType", MobHeadEntity.GetType() & 0xFF);
Writer.AddByte("Rot", MobHeadEntity.GetRotation() & 0xFF);
Writer.AddString("ExtraType", MobHeadEntity.GetOwner().c_str());
Writer.AddString("id", "Skull"); // "Tile Entity ID" - MC wiki; vanilla server always seems to send this though
break;
}
case E_BLOCK_FLOWER_POT:
{
cFlowerPotEntity & FlowerPotEntity = (cFlowerPotEntity &)a_BlockEntity;
Writer.AddInt("x", FlowerPotEntity.GetPosX());
Writer.AddInt("y", FlowerPotEntity.GetPosY());
Writer.AddInt("z", FlowerPotEntity.GetPosZ());
Writer.AddInt("Item", (Int32) FlowerPotEntity.GetItem().m_ItemType);
Writer.AddInt("Data", (Int32) FlowerPotEntity.GetItem().m_ItemDamage);
Writer.AddString("id", "FlowerPot"); // "Tile Entity ID" - MC wiki; vanilla server always seems to send this though
break;
}
default: break;
}
Writer.Finish();
AString Compressed;
CompressStringGZIP(Writer.GetResult().data(), Writer.GetResult().size(), Compressed);
WriteShort((short)Compressed.size());
WriteBuf(Compressed.data(), Compressed.size());
}
void cProtocol172::cPacketizer::WriteByteAngle(double a_Angle)
{
WriteByte((char)(255 * a_Angle / 360));
}
void cProtocol172::cPacketizer::WriteFPInt(double a_Value)
{
int Value = (int)(a_Value * 32);
WriteInt(Value);
}
void cProtocol172::cPacketizer::WriteEntityMetadata(const cEntity & a_Entity)
{
// Common metadata:
Byte Flags = 0;
if (a_Entity.IsOnFire())
{
Flags |= 0x01;
}
if (a_Entity.IsCrouched())
{
Flags |= 0x02;
}
if (a_Entity.IsSprinting())
{
Flags |= 0x08;
}
if (a_Entity.IsRclking())
{
Flags |= 0x10;
}
if (a_Entity.IsInvisible())
{
Flags |= 0x20;
}
WriteByte(0); // Byte(0) + index 0
WriteByte(Flags);
switch (a_Entity.GetEntityType())
{
case cEntity::etPlayer: break; // TODO?
case cEntity::etPickup:
{
WriteByte((5 << 5) | 10); // Slot(5) + index 10
WriteItem(((const cPickup &)a_Entity).GetItem());
break;
}
case cEntity::etMinecart:
{
WriteByte(0x51);
// The following expression makes Minecarts shake more with less health or higher damage taken
// It gets half the maximum health, and takes it away from the current health minus the half health:
/*
Health: 5 | 3 - (5 - 3) = 1 (shake power)
Health: 3 | 3 - (3 - 3) = 3
Health: 1 | 3 - (1 - 3) = 5
*/
WriteInt((((a_Entity.GetMaxHealth() / 2) - (a_Entity.GetHealth() - (a_Entity.GetMaxHealth() / 2))) * ((const cMinecart &)a_Entity).LastDamage()) * 4);
WriteByte(0x52);
WriteInt(1); // Shaking direction, doesn't seem to affect anything
WriteByte(0x73);
WriteFloat((float)(((const cMinecart &)a_Entity).LastDamage() + 10)); // Damage taken / shake effect multiplyer
if (((cMinecart &)a_Entity).GetPayload() == cMinecart::mpNone)
{
cRideableMinecart & RideableMinecart = ((cRideableMinecart &)a_Entity);
const cItem & MinecartContent = RideableMinecart.GetContent();
if (!MinecartContent.IsEmpty())
{
WriteByte(0x54);
int Content = MinecartContent.m_ItemType;
Content |= MinecartContent.m_ItemDamage << 8;
WriteInt(Content);
WriteByte(0x55);
WriteInt(RideableMinecart.GetBlockHeight());
WriteByte(0x56);
WriteByte(1);
}
}
else if (((cMinecart &)a_Entity).GetPayload() == cMinecart::mpFurnace)
{
WriteByte(0x10);
WriteByte(((const cMinecartWithFurnace &)a_Entity).IsFueled() ? 1 : 0);
}
break;
}
case cEntity::etProjectile:
{
cProjectileEntity & Projectile = (cProjectileEntity &)a_Entity;
switch (Projectile.GetProjectileKind())
{
case cProjectileEntity::pkArrow:
{
WriteByte(0x10);
WriteByte(((const cArrowEntity &)a_Entity).IsCritical() ? 1 : 0);
break;
}
case cProjectileEntity::pkFirework:
{
WriteByte(0xA8);
WriteItem(((const cFireworkEntity &)a_Entity).GetItem());
break;
}
default: break;
}
break;
}
case cEntity::etMonster:
{
WriteMobMetadata((const cMonster &)a_Entity);
break;
}
case cEntity::etItemFrame:
{
cItemFrame & Frame = (cItemFrame &)a_Entity;
WriteByte(0xA2);
WriteItem(Frame.GetItem());
WriteByte(0x3);
WriteByte(Frame.GetRotation() / 2);
break;
}
default: break;
}
}
void cProtocol172::cPacketizer::WriteMobMetadata(const cMonster & a_Mob)
{
switch (a_Mob.GetMobType())
{
case cMonster::mtCreeper:
{
WriteByte(0x10);
WriteByte(((const cCreeper &)a_Mob).IsBlowing() ? 1 : -1);
WriteByte(0x11);
WriteByte(((const cCreeper &)a_Mob).IsCharged() ? 1 : 0);
break;
}
case cMonster::mtBat:
{
WriteByte(0x10);
WriteByte(((const cBat &)a_Mob).IsHanging() ? 1 : 0);
break;
}
case cMonster::mtPig:
{
WriteByte(0x10);
WriteByte(((const cPig &)a_Mob).IsSaddled() ? 1 : 0);
break;
}
case cMonster::mtVillager:
{
WriteByte(0x50);
WriteInt(((const cVillager &)a_Mob).GetVilType());
break;
}
case cMonster::mtZombie:
{
WriteByte(0x0c);
WriteByte(((const cZombie &)a_Mob).IsBaby() ? 1 : 0);
WriteByte(0x0d);
WriteByte(((const cZombie &)a_Mob).IsVillagerZombie() ? 1 : 0);
WriteByte(0x0e);
WriteByte(((const cZombie &)a_Mob).IsConverting() ? 1 : 0);
break;
}
case cMonster::mtGhast:
{
WriteByte(0x10);
WriteByte(((const cGhast &)a_Mob).IsCharging());
break;
}
case cMonster::mtWolf:
{
const cWolf & Wolf = (const cWolf &)a_Mob;
Byte WolfStatus = 0;
if (Wolf.IsSitting())
{
WolfStatus |= 0x1;
}
if (Wolf.IsAngry())
{
WolfStatus |= 0x2;
}
if (Wolf.IsTame())
{
WolfStatus |= 0x4;
}
WriteByte(0x10);
WriteByte(WolfStatus);
WriteByte(0x72);
WriteFloat((float)(a_Mob.GetHealth()));
WriteByte(0x13);
WriteByte(Wolf.IsBegging() ? 1 : 0);
WriteByte(0x14);
WriteByte(Wolf.GetCollarColor());
break;
}
case cMonster::mtSheep:
{
WriteByte(0x10);
Byte SheepMetadata = 0;
SheepMetadata = ((const cSheep &)a_Mob).GetFurColor();
if (((const cSheep &)a_Mob).IsSheared())
{
SheepMetadata |= 0x10;
}
WriteByte(SheepMetadata);
break;
}
case cMonster::mtEnderman:
{
WriteByte(0x10);
WriteByte((Byte)(((const cEnderman &)a_Mob).GetCarriedBlock()));
WriteByte(0x11);
WriteByte((Byte)(((const cEnderman &)a_Mob).GetCarriedMeta()));
WriteByte(0x12);
WriteByte(((const cEnderman &)a_Mob).IsScreaming() ? 1 : 0);
break;
}
case cMonster::mtSkeleton:
{
WriteByte(0x0d);
WriteByte(((const cSkeleton &)a_Mob).IsWither() ? 1 : 0);
break;
}
case cMonster::mtWitch:
{
WriteByte(0x15);
WriteByte(((const cWitch &)a_Mob).IsAngry() ? 1 : 0);
break;
}
case cMonster::mtWither:
{
WriteByte(0x54); // Int at index 20
WriteInt(((const cWither &)a_Mob).GetWitherInvulnerableTicks());
WriteByte(0x66); // Float at index 6
WriteFloat((float)(a_Mob.GetHealth()));
break;
}
case cMonster::mtSlime:
{
WriteByte(0x10);
WriteByte(((const cSlime &)a_Mob).GetSize());
break;
}
case cMonster::mtMagmaCube:
{
WriteByte(0x10);
WriteByte(((const cMagmaCube &)a_Mob).GetSize());
break;
}
case cMonster::mtHorse:
{
const cHorse & Horse = (const cHorse &)a_Mob;
int Flags = 0;
if (Horse.IsTame())
{
Flags |= 0x02;
}
if (Horse.IsSaddled())
{
Flags |= 0x04;
}
if (Horse.IsChested())
{
Flags |= 0x08;
}
if (Horse.IsBaby())
{
Flags |= 0x10;
}
if (Horse.IsEating())
{
Flags |= 0x20;
}
if (Horse.IsRearing())
{
Flags |= 0x40;
}
if (Horse.IsMthOpen())
{
Flags |= 0x80;
}
WriteByte(0x50); // Int at index 16
WriteInt(Flags);
WriteByte(0x13); // Byte at index 19
WriteByte(Horse.GetHorseType());
WriteByte(0x54); // Int at index 20
int Appearance = 0;
Appearance = Horse.GetHorseColor();
Appearance |= Horse.GetHorseStyle() << 8;
WriteInt(Appearance);
WriteByte(0x56); // Int at index 22
WriteInt(Horse.GetHorseArmour());
break;
}
} // switch (a_Mob.GetType())
}
void cProtocol172::cPacketizer::WriteEntityProperties(const cEntity & a_Entity)
{
if (!a_Entity.IsMob())
{
// No properties for anything else than mobs
WriteInt(0);
return;
}
// const cMonster & Mob = (const cMonster &)a_Entity;
// TODO: Send properties and modifiers based on the mob type
WriteInt(0); // NumProperties
}
////////////////////////////////////////////////////////////////////////////////
// cProtocol176:
cProtocol176::cProtocol176(cClientHandle * a_Client, const AString &a_ServerAddress, UInt16 a_ServerPort, UInt32 a_State) :
super(a_Client, a_ServerAddress, a_ServerPort, a_State)
{
m_ProtocolVersion = cProtocolRecognizer::PROTO_VERSION_1_7_6;
}
void cProtocol176::SendPlayerSpawn(const cPlayer & a_Player)
{
// Called to spawn another player for the client
cPacketizer Pkt(*this, 0x0c); // Spawn Player packet
Pkt.WriteVarInt(a_Player.GetUniqueID());
Pkt.WriteString(cMojangAPI::MakeUUIDDashed(a_Player.GetClientHandle()->GetUUID()));
Pkt.WriteString(a_Player.GetName());
const Json::Value & Properties = a_Player.GetClientHandle()->GetProperties();
Pkt.WriteVarInt(Properties.size());
for (Json::Value::iterator itr = Properties.begin(), end = Properties.end(); itr != end; ++itr)
{
Pkt.WriteString(((Json::Value)*itr).get("name", "").asString());
Pkt.WriteString(((Json::Value)*itr).get("value", "").asString());
Pkt.WriteString(((Json::Value)*itr).get("signature", "").asString());
}
Pkt.WriteFPInt(a_Player.GetPosX());
Pkt.WriteFPInt(a_Player.GetPosY());
Pkt.WriteFPInt(a_Player.GetPosZ());
Pkt.WriteByteAngle(a_Player.GetYaw());
Pkt.WriteByteAngle(a_Player.GetPitch());
short ItemType = a_Player.GetEquippedItem().IsEmpty() ? 0 : a_Player.GetEquippedItem().m_ItemType;
Pkt.WriteShort(ItemType);
Pkt.WriteByte((3 << 5) | 6); // Metadata: float + index 6
Pkt.WriteFloat((float)a_Player.GetHealth());
Pkt.WriteByte(0x7f); // Metadata: end
}
void cProtocol176::HandlePacketStatusRequest(cByteBuffer & a_ByteBuffer)
{
cServer * Server = cRoot::Get()->GetServer();
AString Motd = Server->GetDescription();
int NumPlayers = Server->GetNumPlayers();
int MaxPlayers = Server->GetMaxPlayers();
AString Favicon = Server->GetFaviconData();
cRoot::Get()->GetPluginManager()->CallHookServerPing(*m_Client, Motd, NumPlayers, MaxPlayers, Favicon);
// Version:
Json::Value Version;
Version["name"] = "1.7.6";
Version["protocol"] = 5;
// Players:
Json::Value Players;
Players["online"] = NumPlayers;
Players["max"] = MaxPlayers;
// TODO: Add "sample"
// Description:
Json::Value Description;
Description["text"] = Motd.c_str();
// Create the response:
Json::Value ResponseValue;
ResponseValue["version"] = Version;
ResponseValue["players"] = Players;
ResponseValue["description"] = Description;
if (!Favicon.empty())
{
ResponseValue["favicon"] = Printf("data:image/png;base64,%s", Favicon.c_str());
}
Json::StyledWriter Writer;
AString Response = Writer.write(ResponseValue);
cPacketizer Pkt(*this, 0x00); // Response packet
Pkt.WriteString(Response);
}
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