Moved source to src

src/Protocol/ChunkDataSerializer.cpp

@@ -0,0 +1,176 @@
+
+// ChunkDataSerializer.cpp
+
+// Implements the cChunkDataSerializer class representing the object that can:
+//  - serialize chunk data to different protocol versions
+//  - cache such serialized data for multiple clients
+
+#include "Globals.h"
+#include "ChunkDataSerializer.h"
+#include "zlib.h"
+
+
+
+
+cChunkDataSerializer::cChunkDataSerializer(
+	const cChunkDef::BlockTypes   & a_BlockTypes,
+	const cChunkDef::BlockNibbles & a_BlockMetas,
+	const cChunkDef::BlockNibbles & a_BlockLight,
+	const cChunkDef::BlockNibbles & a_BlockSkyLight,
+	const unsigned char *           a_BiomeData
+) :
+	m_BlockTypes(a_BlockTypes),
+	m_BlockMetas(a_BlockMetas),
+	m_BlockLight(a_BlockLight),
+	m_BlockSkyLight(a_BlockSkyLight),
+	m_BiomeData(a_BiomeData)
+{
+}
+
+
+
+
+const AString & cChunkDataSerializer::Serialize(int a_Version)
+{
+	Serializations::const_iterator itr = m_Serializations.find(a_Version);
+	if (itr != m_Serializations.end())
+	{
+		return itr->second;
+	}
+	
+	AString data;
+	switch (a_Version)
+	{
+		case RELEASE_1_2_5: Serialize29(data); break;
+		case RELEASE_1_3_2: Serialize39(data); break;
+		// TODO: Other protocol versions may serialize the data differently; implement here
+		
+		default:
+		{
+			LOGERROR("cChunkDataSerializer::Serialize(): Unknown version: %d", a_Version);
+			ASSERT(!"Unknown chunk data serialization version");
+			break;
+		}
+	}
+	m_Serializations[a_Version] = data;
+	return m_Serializations[a_Version];
+}
+
+
+
+
+
+void cChunkDataSerializer::Serialize29(AString & a_Data)
+{
+	// TODO: Do not copy data and then compress it; rather, compress partial blocks of data (zlib *can* stream)
+
+	const int BiomeDataSize    = cChunkDef::Width * cChunkDef::Width;
+	const int MetadataOffset   = sizeof(m_BlockTypes);
+	const int BlockLightOffset = MetadataOffset   + sizeof(m_BlockMetas);
+	const int SkyLightOffset   = BlockLightOffset + sizeof(m_BlockLight);
+	const int BiomeOffset      = SkyLightOffset   + sizeof(m_BlockSkyLight);
+	const int DataSize         = BiomeOffset      + BiomeDataSize;
+	
+	// Temporary buffer for the composed data:
+	char AllData [DataSize];
+
+	memcpy(AllData, m_BlockTypes, sizeof(m_BlockTypes));
+	memcpy(AllData + MetadataOffset,   m_BlockMetas,    sizeof(m_BlockMetas));
+	memcpy(AllData + BlockLightOffset, m_BlockLight,    sizeof(m_BlockLight));
+	memcpy(AllData + SkyLightOffset,   m_BlockSkyLight, sizeof(m_BlockSkyLight));
+	memcpy(AllData + BiomeOffset,      m_BiomeData,     BiomeDataSize);
+
+	// Compress the data:
+	// In order not to use allocation, use a fixed-size buffer, with the size
+	// that uses the same calculation as compressBound():
+	const uLongf CompressedMaxSize = DataSize + (DataSize >> 12) + (DataSize >> 14) + (DataSize >> 25) + 16;
+	char CompressedBlockData[CompressedMaxSize];
+
+	uLongf CompressedSize = compressBound(DataSize);
+	
+	// Run-time check that our compile-time guess about CompressedMaxSize was enough:
+	ASSERT(CompressedSize <= CompressedMaxSize);
+	
+	compress2((Bytef*)CompressedBlockData, &CompressedSize, (const Bytef*)AllData, sizeof(AllData), Z_DEFAULT_COMPRESSION);
+
+	// Now put all those data into a_Data:
+	
+	// "Ground-up continuous", or rather, "biome data present" flag:
+	a_Data.push_back('\x01');
+	
+	// Two bitmaps; we're aways sending the full chunk with no additional data, so the bitmaps are 0xffff and 0, respectively
+	// Also, no endian flipping is needed because of the const values
+	unsigned short BitMap1 = 0xffff;
+	unsigned short BitMap2 = 0;
+	a_Data.append((const char *)&BitMap1, sizeof(short));
+	a_Data.append((const char *)&BitMap2, sizeof(short));
+	
+	Int32 CompressedSizeBE = htonl(CompressedSize);
+	a_Data.append((const char *)&CompressedSizeBE, sizeof(CompressedSizeBE));
+	
+	Int32 UnusedInt32 = 0;
+	a_Data.append((const char *)&UnusedInt32,      sizeof(UnusedInt32));
+	
+	a_Data.append(CompressedBlockData, CompressedSize);
+}
+
+
+
+
+
+void cChunkDataSerializer::Serialize39(AString & a_Data)
+{
+	// TODO: Do not copy data and then compress it; rather, compress partial blocks of data (zlib *can* stream)
+
+	const int BiomeDataSize    = cChunkDef::Width * cChunkDef::Width;
+	const int MetadataOffset   = sizeof(m_BlockTypes);
+	const int BlockLightOffset = MetadataOffset   + sizeof(m_BlockMetas);
+	const int SkyLightOffset   = BlockLightOffset + sizeof(m_BlockLight);
+	const int BiomeOffset      = SkyLightOffset   + sizeof(m_BlockSkyLight);
+	const int DataSize         = BiomeOffset      + BiomeDataSize;
+	
+	// Temporary buffer for the composed data:
+	char AllData [DataSize];
+
+	memcpy(AllData, m_BlockTypes, sizeof(m_BlockTypes));
+	memcpy(AllData + MetadataOffset,   m_BlockMetas,    sizeof(m_BlockMetas));
+	memcpy(AllData + BlockLightOffset, m_BlockLight,    sizeof(m_BlockLight));
+	memcpy(AllData + SkyLightOffset,   m_BlockSkyLight, sizeof(m_BlockSkyLight));
+	memcpy(AllData + BiomeOffset,      m_BiomeData,     BiomeDataSize);
+
+	// Compress the data:
+	// In order not to use allocation, use a fixed-size buffer, with the size
+	// that uses the same calculation as compressBound():
+	const uLongf CompressedMaxSize = DataSize + (DataSize >> 12) + (DataSize >> 14) + (DataSize >> 25) + 16;
+	char CompressedBlockData[CompressedMaxSize];
+
+	uLongf CompressedSize = compressBound(DataSize);
+	
+	// Run-time check that our compile-time guess about CompressedMaxSize was enough:
+	ASSERT(CompressedSize <= CompressedMaxSize);
+	
+	compress2((Bytef*)CompressedBlockData, &CompressedSize, (const Bytef*)AllData, sizeof(AllData), Z_DEFAULT_COMPRESSION);
+
+	// Now put all those data into a_Data:
+	
+	// "Ground-up continuous", or rather, "biome data present" flag:
+	a_Data.push_back('\x01');
+	
+	// Two bitmaps; we're aways sending the full chunk with no additional data, so the bitmaps are 0xffff and 0, respectively
+	// Also, no endian flipping is needed because of the const values
+	unsigned short BitMap1 = 0xffff;
+	unsigned short BitMap2 = 0;
+	a_Data.append((const char *)&BitMap1, sizeof(short));
+	a_Data.append((const char *)&BitMap2, sizeof(short));
+	
+	Int32 CompressedSizeBE = htonl(CompressedSize);
+	a_Data.append((const char *)&CompressedSizeBE, sizeof(CompressedSizeBE));
+	
+	// Unlike 29, 39 doesn't have the "unused" int
+	
+	a_Data.append(CompressedBlockData, CompressedSize);
+}
+
+
+
+

src/Protocol/ChunkDataSerializer.h

@@ -0,0 +1,48 @@
+
+// ChunkDataSerializer.h
+
+// Interfaces to the cChunkDataSerializer class representing the object that can:
+//  - serialize chunk data to different protocol versions
+//  - cache such serialized data for multiple clients
+
+
+
+
+
+class cChunkDataSerializer
+{
+protected:
+	const cChunkDef::BlockTypes   & m_BlockTypes;
+	const cChunkDef::BlockNibbles & m_BlockMetas;
+	const cChunkDef::BlockNibbles & m_BlockLight;
+	const cChunkDef::BlockNibbles & m_BlockSkyLight;
+	const unsigned char * m_BiomeData;
+	
+	typedef std::map<int, AString> Serializations;
+	
+	Serializations m_Serializations;
+	
+	void Serialize29(AString & a_Data);  // Release 1.2.4 and 1.2.5
+	void Serialize39(AString & a_Data);  // Release 1.3.1 and 1.3.2
+	
+public:
+	enum
+	{
+		RELEASE_1_2_5 = 29,
+		RELEASE_1_3_2 = 39,
+	} ;
+	
+	cChunkDataSerializer(
+		const cChunkDef::BlockTypes   & a_BlockTypes,
+		const cChunkDef::BlockNibbles & a_BlockMetas,
+		const cChunkDef::BlockNibbles & a_BlockLight,
+		const cChunkDef::BlockNibbles & a_BlockSkyLight,
+		const unsigned char *           a_BiomeData
+	);
+
+	const AString & Serialize(int a_Version);  // Returns one of the internal m_Serializations[]
+} ;
+
+
+
+

src/Protocol/Protocol.h

@@ -0,0 +1,215 @@
+
+// Protocol.h
+
+// Interfaces to the cProtocol class representing the generic interface that a protocol
+// parser and serializer must implement
+
+
+
+
+
+#pragma once
+
+#include "../Defines.h"
+#include "../Endianness.h"
+
+
+
+
+class cPlayer;
+class cEntity;
+class cWindow;
+class cInventory;
+class cPawn;
+class cPickup;
+class cMonster;
+class cChunkDataSerializer;
+class cWorld;
+class cFallingBlock;
+
+
+
+
+
+typedef unsigned char Byte;
+
+
+
+
+
+class cProtocol
+{
+public:
+	cProtocol(cClientHandle * a_Client) :
+		m_Client(a_Client)
+	{
+	}
+	virtual ~cProtocol() {}
+	
+	/// Called when client sends some data
+	virtual void DataReceived(const char * a_Data, int a_Size) = 0;
+	
+	// Sending stuff to clients (alphabetically sorted):
+	virtual void SendAttachEntity        (const cEntity & a_Entity, const cEntity * a_Vehicle) = 0;
+	virtual void SendBlockAction         (int a_BlockX, int a_BlockY, int a_BlockZ, char a_Byte1, char a_Byte2, BLOCKTYPE a_BlockType) = 0;
+	virtual void SendBlockBreakAnim      (int a_EntityID, int a_BlockX, int a_BlockY, int a_BlockZ, char a_Stage) = 0;
+	virtual void SendBlockChange         (int a_BlockX, int a_BlockY, int a_BlockZ, BLOCKTYPE a_BlockType, NIBBLETYPE a_BlockMeta) = 0;
+	virtual void SendBlockChanges        (int a_ChunkX, int a_ChunkZ, const sSetBlockVector & a_Changes) = 0;
+	virtual void SendChat                (const AString & a_Message) = 0;
+	virtual void SendChunkData           (int a_ChunkX, int a_ChunkZ, cChunkDataSerializer & a_Serializer) = 0;
+	virtual void SendCollectPickup       (const cPickup & a_Pickup, const cPlayer & a_Player) = 0;
+	virtual void SendDestroyEntity       (const cEntity & a_Entity) = 0;
+	virtual void SendDisconnect          (const AString & a_Reason) = 0;
+	virtual void SendEditSign            (int a_BlockX, int a_BlockY, int a_BlockZ) = 0;  ///< Request the client to open up the sign editor for the sign (1.6+)
+	virtual void SendEntityEquipment     (const cEntity & a_Entity, short a_SlotNum, const cItem & a_Item) = 0;
+	virtual void SendEntityHeadLook      (const cEntity & a_Entity) = 0;
+	virtual void SendEntityLook          (const cEntity & a_Entity) = 0;
+	virtual void SendEntityMetadata      (const cEntity & a_Entity) = 0;
+	virtual void SendEntityProperties    (const cEntity & a_Entity) = 0;
+	virtual void SendEntityRelMove       (const cEntity & a_Entity, char a_RelX, char a_RelY, char a_RelZ) = 0;
+	virtual void SendEntityRelMoveLook   (const cEntity & a_Entity, char a_RelX, char a_RelY, char a_RelZ) = 0;
+	virtual void SendEntityStatus        (const cEntity & a_Entity, char a_Status) = 0;
+	virtual void SendEntityVelocity      (const cEntity & a_Entity) = 0;
+	virtual void SendExplosion           (double a_BlockX, double a_BlockY, double a_BlockZ, float a_Radius, const cVector3iArray & a_BlocksAffected, const Vector3d & a_PlayerMotion) = 0;
+	virtual void SendGameMode            (eGameMode a_GameMode) = 0;
+	virtual void SendHealth              (void) = 0;
+	virtual void SendInventorySlot       (char a_WindowID, short a_SlotNum, const cItem & a_Item) = 0;
+	virtual void SendKeepAlive           (int a_PingID) = 0;
+	virtual void SendLogin               (const cPlayer & a_Player, const cWorld & a_World) = 0;
+	virtual void SendPickupSpawn         (const cPickup & a_Pickup) = 0;
+	virtual void SendPlayerAbilities     (void) = 0;
+	virtual void SendPlayerAnimation     (const cPlayer & a_Player, char a_Animation) = 0;
+	virtual void SendPlayerListItem      (const cPlayer & a_Player, bool a_IsOnline) = 0;
+	virtual void SendPlayerMaxSpeed      (void) = 0;  ///< Informs the client of the maximum player speed (1.6.1+)
+	virtual void SendPlayerMoveLook      (void) = 0;
+	virtual void SendPlayerPosition      (void) = 0;
+	virtual void SendPlayerSpawn         (const cPlayer & a_Player) = 0;
+	virtual void SendRespawn             (void) = 0;
+	virtual void SendSoundEffect         (const AString & a_SoundName, int a_SrcX, int a_SrcY, int a_SrcZ, float a_Volume, float a_Pitch) = 0;  // a_Src coords are Block * 8
+	virtual void SendSoundParticleEffect (int a_EffectID, int a_SrcX, int a_SrcY, int a_SrcZ, int a_Data) = 0;
+	virtual void SendSpawnFallingBlock   (const cFallingBlock & a_FallingBlock) = 0;
+	virtual void SendSpawnMob            (const cMonster & a_Mob) = 0;
+	virtual void SendSpawnObject         (const cEntity & a_Entity, char a_ObjectType, int a_ObjectData, Byte a_Yaw, Byte a_Pitch) = 0;
+	virtual void SendSpawnVehicle        (const cEntity & a_Vehicle, char a_VehicleType, char a_VehicleSubType) = 0;
+	virtual void SendTabCompletionResults(const AStringVector & a_Results) = 0;
+	virtual void SendTeleportEntity      (const cEntity & a_Entity) = 0;
+	virtual void SendThunderbolt         (int a_BlockX, int a_BlockY, int a_BlockZ) = 0;
+	virtual void SendTimeUpdate          (Int64 a_WorldAge, Int64 a_TimeOfDay) = 0;
+	virtual void SendUnloadChunk         (int a_ChunkX, int a_ChunkZ) = 0;
+	virtual void 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) = 0;
+	virtual void SendUseBed              (const cEntity & a_Entity, int a_BlockX, int a_BlockY, int a_BlockZ ) = 0;
+	virtual void SendWeather             (eWeather a_Weather) = 0;
+	virtual void SendWholeInventory      (const cWindow    & a_Window) = 0;
+	virtual void SendWindowClose         (const cWindow    & a_Window) = 0;
+	virtual void SendWindowOpen          (const cWindow & a_Window) = 0;
+	virtual void SendWindowProperty      (const cWindow & a_Window, short a_Property, short a_Value) = 0;
+
+	/// Returns the ServerID used for authentication through session.minecraft.net
+	virtual AString GetAuthServerID(void) = 0;
+
+protected:
+	cClientHandle * m_Client;
+	cCriticalSection m_CSPacket;  //< Each SendXYZ() function must acquire this CS in order to send the whole packet at once
+	
+	/// A generic data-sending routine, all outgoing packet data needs to be routed through this so that descendants may override it
+	virtual void SendData(const char * a_Data, int a_Size) = 0;
+	
+	/// Called after writing each packet, enables descendants to flush their buffers
+	virtual void Flush(void) {};
+	
+	// Helpers for writing partial packet data, write using SendData()
+	void WriteByte(Byte a_Value)
+	{
+		SendData((const char *)&a_Value, 1);
+	}
+	
+	void WriteShort(short a_Value)
+	{
+		a_Value = htons(a_Value);
+		SendData((const char *)&a_Value, 2);
+	}
+	
+	/*
+	void WriteShort(unsigned short a_Value)
+	{
+		a_Value = htons(a_Value);
+		SendData((const char *)&a_Value, 2);
+	}
+	*/
+	
+	void WriteInt(int a_Value)
+	{
+		a_Value = htonl(a_Value);
+		SendData((const char *)&a_Value, 4);
+	}
+	
+	void WriteUInt(unsigned int a_Value)
+	{
+		a_Value = htonl(a_Value);
+		SendData((const char *)&a_Value, 4);
+	}
+	
+	void WriteInt64 (Int64 a_Value)
+	{
+		a_Value = HostToNetwork8(&a_Value);
+		SendData((const char *)&a_Value, 8);
+	}
+	
+	void WriteFloat (float a_Value)
+	{
+		unsigned int val = HostToNetwork4(&a_Value);
+		SendData((const char *)&val, 4);
+	}
+	
+	void WriteDouble(double a_Value)
+	{
+		unsigned long long val = HostToNetwork8(&a_Value);
+		SendData((const char *)&val, 8);
+	}
+	
+	void WriteString(const AString & a_Value)
+	{
+		AString UTF16;
+		UTF8ToRawBEUTF16(a_Value.c_str(), a_Value.length(), UTF16);
+		WriteShort((unsigned short)(UTF16.size() / 2));
+		SendData(UTF16.data(), UTF16.size());
+	}
+	
+	void WriteBool(bool a_Value)
+	{
+		WriteByte(a_Value ? 1 : 0);
+	}
+	
+	void WriteVectorI(const Vector3i & a_Vector)
+	{
+		WriteInt(a_Vector.x);
+		WriteInt(a_Vector.y);
+		WriteInt(a_Vector.z);
+	}
+	
+	void WriteVarInt(UInt32 a_Value)
+	{
+		// A 32-bit integer can be encoded by at most 5 bytes:
+		unsigned char b[5];
+		int idx = 0;
+		do
+		{
+			b[idx] = (a_Value & 0x7f) | ((a_Value > 0x7f) ? 0x80 : 0x00);
+			a_Value = a_Value >> 7;
+			idx++;
+		} while (a_Value > 0);
+
+		SendData((const char *)b, idx);
+	}
+	
+	void WriteVarUTF8String(const AString & a_String)
+	{
+		WriteVarInt(a_String.size());
+		SendData(a_String.data(), a_String.size());
+	}
+} ;
+
+
+
+
+

src/Protocol/Protocol125.h

@@ -0,0 +1,157 @@
+
+// Protocol125.h
+
+// Interfaces to the cProtocol125 class representing the release 1.2.5 protocol (#29)
+
+
+
+
+
+#pragma once
+
+#include "Protocol.h"
+#include "../ByteBuffer.h"
+
+
+
+
+
+class cProtocol125 :
+	public cProtocol
+{
+	typedef cProtocol super;
+public:
+	cProtocol125(cClientHandle * a_Client);
+	
+	/// Called when client sends some data:
+	virtual void DataReceived(const char * a_Data, int a_Size) override;
+	
+	/// Sending stuff to clients (alphabetically sorted):
+	virtual void SendAttachEntity        (const cEntity & a_Entity, const cEntity * a_Vehicle) override;
+	virtual void SendBlockAction         (int a_BlockX, int a_BlockY, int a_BlockZ, char a_Byte1, char a_Byte2, BLOCKTYPE a_BlockType) override;
+	virtual void SendBlockBreakAnim	     (int a_EntityID, int a_BlockX, int a_BlockY, int a_BlockZ, char a_Stage) override;
+	virtual void SendBlockChange         (int a_BlockX, int a_BlockY, int a_BlockZ, BLOCKTYPE a_BlockType, NIBBLETYPE a_BlockMeta) override;
+	virtual void SendBlockChanges        (int a_ChunkX, int a_ChunkZ, const sSetBlockVector & a_Changes) override;
+	virtual void SendChat                (const AString & a_Message) override;
+	virtual void SendChunkData           (int a_ChunkX, int a_ChunkZ, cChunkDataSerializer & a_Serializer) override;
+	virtual void SendCollectPickup       (const cPickup & a_Pickup, const cPlayer & a_Player) override;
+	virtual void SendDestroyEntity       (const cEntity & a_Entity) override;
+	virtual void SendDisconnect          (const AString & a_Reason) override;
+	virtual void SendEditSign            (int a_BlockX, int a_BlockY, int a_BlockZ) override;  ///< Request the client to open up the sign editor for the sign (1.6+)
+	virtual void SendEntityEquipment     (const cEntity & a_Entity, short a_SlotNum, const cItem & a_Item) override;
+	virtual void SendEntityHeadLook      (const cEntity & a_Entity) override;
+	virtual void SendEntityLook          (const cEntity & a_Entity) override;
+	virtual void SendEntityMetadata      (const cEntity & a_Entity) override;
+	virtual void SendEntityProperties    (const cEntity & a_Entity) override;
+	virtual void SendEntityRelMove       (const cEntity & a_Entity, char a_RelX, char a_RelY, char a_RelZ) override;
+	virtual void SendEntityRelMoveLook   (const cEntity & a_Entity, char a_RelX, char a_RelY, char a_RelZ) override;
+	virtual void SendEntityStatus        (const cEntity & a_Entity, char a_Status) override;
+	virtual void SendEntityVelocity      (const cEntity & a_Entity) override;
+	virtual void SendExplosion           (double a_BlockX, double a_BlockY, double a_BlockZ, float a_Radius, const cVector3iArray & a_BlocksAffected, const Vector3d & a_PlayerMotion) override;
+	virtual void SendGameMode            (eGameMode a_GameMode) override;
+	virtual void SendHealth              (void) override;
+	virtual void SendInventorySlot       (char a_WindowID, short a_SlotNum, const cItem & a_Item) override;
+	virtual void SendKeepAlive           (int a_PingID) override;
+	virtual void SendLogin               (const cPlayer & a_Player, const cWorld & a_World) override;
+	virtual void SendPickupSpawn         (const cPickup & a_Pickup) override;
+	virtual void SendPlayerAbilities     (void) override {}  // This protocol doesn't support such message
+	virtual void SendPlayerAnimation     (const cPlayer & a_Player, char a_Animation) override;
+	virtual void SendPlayerListItem      (const cPlayer & a_Player, bool a_IsOnline) override;
+	virtual void SendPlayerMaxSpeed      (void) override;
+	virtual void SendPlayerMoveLook      (void) override;
+	virtual void SendPlayerPosition      (void) override;
+	virtual void SendPlayerSpawn         (const cPlayer & a_Player) override;
+	virtual void SendRespawn             (void) override;
+	virtual void SendSoundEffect         (const AString & a_SoundName, int a_SrcX, int a_SrcY, int a_SrcZ, float a_Volume, float a_Pitch) override;  // a_Src coords are Block * 8
+	virtual void SendSoundParticleEffect (int a_EffectID, int a_SrcX, int a_SrcY, int a_SrcZ, int a_Data) override;
+	virtual void SendSpawnFallingBlock   (const cFallingBlock & a_FallingBlock) override;
+	virtual void SendSpawnMob            (const cMonster & a_Mob) override;
+	virtual void SendSpawnObject         (const cEntity & a_Entity, char a_ObjectType, int a_ObjectData, Byte a_Yaw, Byte a_Pitch) override;
+	virtual void SendSpawnVehicle        (const cEntity & a_Vehicle, char a_VehicleType, char a_VehicleSubType) override;
+	virtual void SendTabCompletionResults(const AStringVector & a_Results) override;
+	virtual void SendTeleportEntity      (const cEntity & a_Entity) override;
+	virtual void SendThunderbolt         (int a_BlockX, int a_BlockY, int a_BlockZ) override;
+	virtual void SendTimeUpdate          (Int64 a_WorldAge, Int64 a_TimeOfDay) override;
+	virtual void SendUnloadChunk         (int a_ChunkX, int a_ChunkZ) override;
+	virtual void 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) override;
+	virtual void SendUseBed              (const cEntity & a_Entity, int a_BlockX, int a_BlockY, int a_BlockZ ) override;
+	virtual void SendWeather             (eWeather a_Weather) override;
+	virtual void SendWholeInventory      (const cWindow    & a_Window) override;
+	virtual void SendWindowClose         (const cWindow    & a_Window) override;
+	virtual void SendWindowOpen          (const cWindow & a_Window) override;
+	virtual void SendWindowProperty      (const cWindow & a_Window, short a_Property, short a_Value) override;
+	
+	virtual AString GetAuthServerID(void) override;
+	
+protected:
+	/// Results of packet-parsing:
+	enum {
+		PARSE_OK         =  1,
+		PARSE_ERROR      = -1,
+		PARSE_UNKNOWN    = -2,
+		PARSE_INCOMPLETE = -3,
+	} ;
+	
+	cByteBuffer m_ReceivedData;  ///< Buffer for the received data
+	
+	AString m_Username;  ///< Stored in ParseHandshake(), compared to Login username
+	
+	virtual void SendData(const char * a_Data, int a_Size) override;
+	
+	/// Sends the Handshake packet
+	void SendHandshake(const AString & a_ConnectionHash);
+
+	/// Parse the packet of the specified type from m_ReceivedData (switch into ParseXYZ() )
+	virtual int ParsePacket(unsigned char a_PacketType);
+
+	// Specific packet parsers:
+	virtual int ParseArmAnim                (void);
+	virtual int ParseBlockDig               (void);
+	virtual int ParseBlockPlace             (void);
+	virtual int ParseChat                   (void);
+	virtual int ParseCreativeInventoryAction(void);
+	virtual int ParseDisconnect             (void);
+	virtual int ParseEntityAction           (void);
+	virtual int ParseHandshake              (void);
+	virtual int ParseKeepAlive              (void);
+	virtual int ParseLogin                  (void);
+	virtual int ParsePing                   (void);
+	virtual int ParsePlayerAbilities        (void);
+	virtual int ParsePlayerLook             (void);
+	virtual int ParsePlayerMoveLook         (void);
+	virtual int ParsePlayerOnGround         (void);
+	virtual int ParsePlayerPosition         (void);
+	virtual int ParsePluginMessage          (void);
+	virtual int ParseRespawn                (void);
+	virtual int ParseSlotSelected           (void);
+	virtual int ParseUpdateSign             (void);
+	virtual int ParseUseEntity              (void);
+	virtual int ParseWindowClick            (void);
+	virtual int ParseWindowClose            (void);
+	
+	// Utility functions:
+	/// Writes a "pre-chunk" packet
+	void SendPreChunk(int a_ChunkX, int a_ChunkZ, bool a_ShouldLoad);
+	
+	/// Writes a "set window items" packet with the specified params
+	void SendWindowSlots(char a_WindowID, int a_NumItems, const cItem * a_Items);
+	
+	/// Writes one item, "slot" as the protocol wiki calls it
+	virtual void WriteItem(const cItem & a_Item);
+	
+	/// Parses one item, "slot" as the protocol wiki calls it, from m_ReceivedData; returns the usual ParsePacket() codes
+	virtual int  ParseItem(cItem & a_Item);
+	
+	/// Writes the COMMON entity metadata
+	void WriteCommonMetadata(const cEntity & a_Entity);
+
+	/// Writes normal entity metadata
+	void WriteEntityMetadata(const cEntity & a_Entity);
+
+	/// Writes mobile entity metadata
+	void WriteMobMetadata(const cMonster & a_Mob);
+} ;
+
+
+
+

src/Protocol/Protocol132.cpp

@@ -0,0 +1,950 @@
+
+// Protocol132.cpp
+
+// Implements the cProtocol132 class representing the release 1.3.2 protocol (#39)
+
+#include "Globals.h"
+#include "Protocol132.h"
+#include "../Root.h"
+#include "../Server.h"
+#include "../World.h"
+#include "../ClientHandle.h"
+#include "../../CryptoPP/randpool.h"
+#include "../Item.h"
+#include "ChunkDataSerializer.h"
+#include "../Entities/Player.h"
+#include "../Mobs/Monster.h"
+#include "../UI/Window.h"
+#include "../Entities/Pickup.h"
+#include "../WorldStorage/FastNBT.h"
+#include "../StringCompression.h"
+
+
+
+
+
+#define HANDLE_PACKET_READ(Proc, Type, Var) \
+	Type Var; \
+	{ \
+		if (!m_ReceivedData.Proc(Var)) \
+		{ \
+			m_ReceivedData.CheckValid(); \
+			return PARSE_INCOMPLETE; \
+		} \
+		m_ReceivedData.CheckValid(); \
+	}
+
+
+
+
+typedef unsigned char Byte;
+
+
+
+
+
+using namespace CryptoPP;
+
+
+
+
+
+const int MAX_ENC_LEN = 512;  // Maximum size of the encrypted message; should be 128, but who knows...
+
+
+
+
+
+enum
+{
+	PACKET_KEEP_ALIVE            = 0x00,
+	PACKET_LOGIN                 = 0x01,
+	PACKET_ENTITY_EQUIPMENT      = 0x05,
+	PACKET_COMPASS               = 0x06,
+	PACKET_PLAYER_SPAWN          = 0x14,
+	PACKET_COLLECT_PICKUP        = 0x16,
+	PACKET_SPAWN_MOB             = 0x18,
+	PACKET_DESTROY_ENTITIES      = 0x1d,
+	PACKET_CHUNK_DATA            = 0x33,
+	PACKET_BLOCK_CHANGE          = 0x35,
+	PACKET_BLOCK_ACTION          = 0x36,
+	PACKET_BLOCK_BREAK_ANIM      = 0x37,
+	PACKET_SOUND_EFFECT          = 0x3e,
+	PACKET_SOUND_PARTICLE_EFFECT = 0x3d,
+	PACKET_TAB_COMPLETION        = 0xcb,
+	PACKET_LOCALE_VIEW_DISTANCE  = 0xcc,
+	PACKET_CLIENT_STATUSES       = 0xcd,
+	PACKET_ENCRYPTION_KEY_RESP   = 0xfc,
+} ;
+
+
+
+
+
+// Converts a raw 160-bit SHA1 digest into a Java Hex representation
+// According to http://wiki.vg/wiki/index.php?title=Protocol_Encryption&oldid=2802
+static void DigestToJava(byte a_Digest[20], AString & a_Out)
+{
+	bool IsNegative = (a_Digest[0] >= 0x80);
+	if (IsNegative)
+	{
+		// Two's complement:
+		bool carry = true;  // Add one to the whole number
+		for (int i = 19; i >= 0; i--)
+		{
+			a_Digest[i] = ~a_Digest[i];
+			if (carry)
+			{
+				carry = (a_Digest[i] == 0xff);
+				a_Digest[i]++;
+			}
+		}
+	}
+	a_Out.clear();
+	a_Out.reserve(40);
+	for (int i = 0; i < 20; i++)
+	{
+		AppendPrintf(a_Out, "%02x", a_Digest[i]);
+	}
+	while ((a_Out.length() > 0) && (a_Out[0] == '0'))
+	{
+		a_Out.erase(0, 1);
+	}
+	if (IsNegative)
+	{
+		a_Out.insert(0, "-");
+	}
+}
+
+
+
+
+
+/*
+// Self-test the hash formatting for known values:
+// sha1(Notch) : 4ed1f46bbe04bc756bcb17c0c7ce3e4632f06a48
+// sha1(jeb_)  : -7c9d5b0044c130109a5d7b5fb5c317c02b4e28c1
+// sha1(simon) : 88e16a1019277b15d58faf0541e11910eb756f6
+
+class Test
+{
+public:
+	Test(void)
+	{
+		AString DigestNotch, DigestJeb, DigestSimon;
+		byte Digest[20];
+		CryptoPP::SHA1 Checksum;
+		Checksum.Update((const byte *)"Notch", 5);
+		Checksum.Final(Digest);
+		DigestToJava(Digest, DigestNotch);
+		Checksum.Restart();
+		Checksum.Update((const byte *)"jeb_", 4);
+		Checksum.Final(Digest);
+		DigestToJava(Digest, DigestJeb);
+		Checksum.Restart();
+		Checksum.Update((const byte *)"simon", 5);
+		Checksum.Final(Digest);
+		DigestToJava(Digest, DigestSimon);
+		printf("Notch: \"%s\"", DigestNotch.c_str());
+		printf("jeb_: \"%s\"",  DigestJeb.c_str());
+		printf("simon: \"%s\"", DigestSimon.c_str());
+	}
+} test;
+*/
+
+
+
+
+
+///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+// cProtocol132:
+
+cProtocol132::cProtocol132(cClientHandle * a_Client) :
+	super(a_Client),
+	m_IsEncrypted(false)
+{
+}
+
+
+
+
+
+cProtocol132::~cProtocol132()
+{
+	if (!m_DataToSend.empty())
+	{
+		LOGD("There are %d unsent bytes while deleting cProtocol132", m_DataToSend.size());
+	}
+}
+
+
+
+
+
+void cProtocol132::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);
+			super::DataReceived((const char *)Decrypted, NumBytes);
+			a_Size -= NumBytes;
+			a_Data += NumBytes;
+		}
+	}
+	else
+	{
+		super::DataReceived(a_Data, a_Size);
+	}
+}
+
+
+
+
+
+void cProtocol132::SendBlockAction(int a_BlockX, int a_BlockY, int a_BlockZ, char a_Byte1, char a_Byte2, BLOCKTYPE a_BlockType)
+{
+	cCSLock Lock(m_CSPacket);
+	WriteByte (PACKET_BLOCK_ACTION);
+	WriteInt  (a_BlockX);
+	WriteShort((short)a_BlockY);
+	WriteInt  (a_BlockZ);
+	WriteByte (a_Byte1);
+	WriteByte (a_Byte2);
+	WriteShort(a_BlockType);
+	Flush();
+}
+
+
+
+
+
+void cProtocol132::SendBlockBreakAnim(int a_entityID, int a_BlockX, int a_BlockY, int a_BlockZ, char stage)
+{
+	cCSLock Lock(m_CSPacket);
+	WriteByte   (PACKET_BLOCK_BREAK_ANIM);
+	WriteInt    (a_entityID);
+	WriteInt    (a_BlockX);
+	WriteInt    (a_BlockY);
+	WriteInt    (a_BlockZ);
+	WriteByte   (stage);
+	Flush();
+}
+
+
+
+
+
+void cProtocol132::SendBlockChange(int a_BlockX, int a_BlockY, int a_BlockZ, BLOCKTYPE a_BlockType, NIBBLETYPE a_BlockMeta)
+{
+	cCSLock Lock(m_CSPacket);
+	WriteByte (PACKET_BLOCK_CHANGE);
+	WriteInt  (a_BlockX);
+	WriteByte ((unsigned char)a_BlockY);
+	WriteInt  (a_BlockZ);
+	WriteShort(a_BlockType);
+	WriteByte (a_BlockMeta);
+	Flush();
+}
+
+
+
+
+
+void cProtocol132::SendChunkData(int a_ChunkX, int a_ChunkZ, cChunkDataSerializer & a_Serializer)
+{
+	cCSLock Lock(m_CSPacket);
+	
+	// Pre-chunk not used in 1.3.2. Finally.
+
+	// Send the chunk data:
+	AString Serialized = a_Serializer.Serialize(cChunkDataSerializer::RELEASE_1_3_2);
+	WriteByte(PACKET_CHUNK_DATA);
+	WriteInt (a_ChunkX);
+	WriteInt (a_ChunkZ);
+	SendData(Serialized.data(), Serialized.size());
+	Flush();
+}
+
+
+
+
+
+void cProtocol132::SendCollectPickup(const cPickup & a_Pickup, const cPlayer & a_Player)
+{
+	cCSLock Lock(m_CSPacket);
+	WriteByte(PACKET_COLLECT_PICKUP);
+	WriteInt (a_Pickup.GetUniqueID());
+	WriteInt (a_Player.GetUniqueID());
+	Flush();
+	
+	// Also send the "pop" sound effect with a somewhat random pitch (fast-random using EntityID ;)
+	SendSoundEffect(
+		"random.pop",
+		(int)(a_Pickup.GetPosX() * 8), (int)(a_Pickup.GetPosY() * 8), (int)(a_Pickup.GetPosZ() * 8),
+		0.5, (float)(0.75 + ((float)((a_Pickup.GetUniqueID() * 23) % 32)) / 64)
+	);
+}
+
+
+
+
+
+void cProtocol132::SendDestroyEntity(const cEntity & a_Entity)
+{
+	if (a_Entity.GetUniqueID() == m_Client->GetPlayer()->GetUniqueID())
+	{
+		// Do not send "destroy self" to the client, the client would crash (FS #254)
+		return;
+	}
+	
+	cCSLock Lock(m_CSPacket);
+	WriteByte(PACKET_DESTROY_ENTITIES);
+	WriteByte(1);  // entity count
+	WriteInt (a_Entity.GetUniqueID());
+	Flush();
+}
+
+
+
+
+
+void cProtocol132::SendEntityEquipment(const cEntity & a_Entity, short a_SlotNum, const cItem & a_Item)
+{
+	cCSLock Lock(m_CSPacket);
+	WriteByte (PACKET_ENTITY_EQUIPMENT);
+	WriteInt  (a_Entity.GetUniqueID());
+	WriteShort(a_SlotNum);
+	WriteItem (a_Item);
+	Flush();
+}
+
+
+
+
+
+void cProtocol132::SendLogin(const cPlayer & a_Player, const cWorld & a_World)
+{
+	cCSLock Lock(m_CSPacket);
+	WriteByte  (PACKET_LOGIN);
+	WriteInt   (a_Player.GetUniqueID());  // EntityID of the player
+	WriteString("default");  // Level type
+	WriteByte  ((int)a_Player.GetGameMode());
+	WriteByte  ((Byte)(a_World.GetDimension()));
+	WriteByte  (2);  // TODO: Difficulty
+	WriteByte  (0);  // Unused, used to be world height
+	WriteByte  (8);  // Client list width or something
+	Flush();
+	
+	SendCompass(a_World);
+}
+
+
+
+
+
+void cProtocol132::SendPlayerSpawn(const cPlayer & a_Player)
+{
+	const cItem & HeldItem = a_Player.GetEquippedItem();
+	cCSLock Lock(m_CSPacket);
+	WriteByte	 (PACKET_PLAYER_SPAWN);
+	WriteInt   (a_Player.GetUniqueID());
+	WriteString(a_Player.GetName());
+	WriteInt   ((int)(a_Player.GetPosX() * 32));
+	WriteInt   ((int)(a_Player.GetPosY() * 32));
+	WriteInt   ((int)(a_Player.GetPosZ() * 32));
+	WriteByte  ((char)((a_Player.GetRot().x / 360.f) * 256));
+	WriteByte  ((char)((a_Player.GetRot().y / 360.f) * 256));
+	WriteShort (HeldItem.IsEmpty() ? 0 : HeldItem.m_ItemType);
+	// Player metadata: just use a default metadata value, since the client doesn't like starting without any metadata:
+	WriteByte  (0);  // Index 0, byte (flags)
+	WriteByte  (0);  // Flags, empty
+	WriteByte  (0x7f);  // End of metadata
+	Flush();
+}
+
+
+
+
+
+void cProtocol132::SendSoundEffect(const AString & a_SoundName, int a_SrcX, int a_SrcY, int a_SrcZ, float a_Volume, float a_Pitch)
+{
+	cCSLock Lock(m_CSPacket);
+	WriteByte   (PACKET_SOUND_EFFECT);
+	WriteString (a_SoundName);
+	WriteInt    (a_SrcX);
+	WriteInt    (a_SrcY);
+	WriteInt    (a_SrcZ);
+	WriteFloat  (a_Volume);
+	WriteByte   ((char)(a_Pitch * 63.0f));
+	Flush();
+}
+
+
+
+
+
+void cProtocol132::SendSoundParticleEffect(int a_EffectID, int a_SrcX, int a_SrcY, int a_SrcZ, int a_Data)
+{
+	cCSLock Lock(m_CSPacket);
+	WriteByte(PACKET_SOUND_PARTICLE_EFFECT);
+	WriteInt (a_EffectID);
+	WriteInt (a_SrcX);
+	WriteByte(a_SrcY);
+	WriteInt (a_SrcZ);
+	WriteInt (a_Data);
+	Flush();
+}
+
+
+
+
+
+void cProtocol132::SendSpawnMob(const cMonster & a_Mob)
+{
+	cCSLock Lock(m_CSPacket);
+	WriteByte   (PACKET_SPAWN_MOB);
+	WriteInt    (a_Mob.GetUniqueID());
+	WriteByte   (a_Mob.GetMobType());
+	WriteVectorI((Vector3i)(a_Mob.GetPosition() * 32));
+	WriteByte   ((Byte)((a_Mob.GetRotation() / 360.f) * 256));
+	WriteByte   ((Byte)((a_Mob.GetPitch() / 360.f) * 256));
+	WriteByte   ((Byte)((a_Mob.GetHeadYaw() / 360.f) * 256));
+	WriteShort  ((short)(a_Mob.GetSpeedX() * 400));
+	WriteShort  ((short)(a_Mob.GetSpeedY() * 400));
+	WriteShort  ((short)(a_Mob.GetSpeedZ() * 400));
+
+	WriteCommonMetadata(a_Mob);
+	WriteMobMetadata(a_Mob);
+	WriteByte(0x7f);
+
+	Flush();
+}
+
+
+
+
+
+void cProtocol132::SendTabCompletionResults(const AStringVector & a_Results)
+{
+	if (a_Results.empty())
+	{
+		// No results to send
+		return;
+	}
+	
+	AString Serialized(a_Results[0]);
+	for (AStringVector::const_iterator itr = a_Results.begin() + 1, end = a_Results.end(); itr != end; ++itr)
+	{
+		Serialized.push_back(0);
+		Serialized.append(*itr);
+	}  // for itr - a_Results[]
+	
+	cCSLock Lock(m_CSPacket);
+	WriteByte(PACKET_TAB_COMPLETION);
+	WriteString(Serialized);
+	Flush();
+}
+
+
+
+
+
+void cProtocol132::SendUnloadChunk(int a_ChunkX, int a_ChunkZ)
+{
+	// Unloading the chunk is done by sending a "map chunk" packet
+	// with IncludeInitialize set to true and primary bitmap set to 0:
+	cCSLock Lock(m_CSPacket);
+	WriteByte(PACKET_CHUNK_DATA);
+	WriteInt (a_ChunkX);
+	WriteInt (a_ChunkZ);
+	WriteBool(true);      // IncludeInitialize
+	WriteShort(0);        // Primary bitmap
+	WriteShort(0);        // Add bitmap
+	WriteInt(0);
+	Flush();
+}
+
+
+
+
+
+void cProtocol132::SendWholeInventory(const cWindow & a_Window)
+{
+	// 1.3.2 requires player inventory slots to be sent as SetSlot packets, 
+	// otherwise it sometimes fails to update the window
+	
+	// Send the entire window:
+	super::SendWholeInventory(a_Window);
+	
+	// Send the player inventory and hotbar:
+	const cInventory & Inventory = m_Client->GetPlayer()->GetInventory();
+	int BaseOffset = a_Window.GetNumSlots() - (cInventory::invNumSlots - cInventory::invInventoryOffset);  // Number of non-inventory slots
+	char WindowID = a_Window.GetWindowID();
+	for (int i = 0; i < cInventory::invInventoryCount; i++)
+	{
+		SendInventorySlot(WindowID, BaseOffset + i, Inventory.GetInventorySlot(i));
+	}  // for i - Inventory[]
+	BaseOffset += cInventory::invInventoryCount;
+	for (int i = 0; i < cInventory::invHotbarCount; i++)
+	{
+		SendInventorySlot(WindowID, BaseOffset + i, Inventory.GetHotbarSlot(i));
+	}  // for i - Hotbar[]
+	
+	// Send even the item being dragged:
+	SendInventorySlot(-1, -1, m_Client->GetPlayer()->GetDraggingItem());
+}
+
+
+
+
+
+AString cProtocol132::GetAuthServerID(void)
+{
+	// http://wiki.vg/wiki/index.php?title=Session&oldid=2615
+	// Server uses SHA1 to mix ServerID, Client secret and server public key together
+	// The mixing is done in StartEncryption, the result is in m_AuthServerID
+	
+	return m_AuthServerID;
+}
+
+
+
+
+
+int cProtocol132::ParsePacket(unsigned char a_PacketType)
+{
+	switch (a_PacketType)
+	{
+		default:                          return super::ParsePacket(a_PacketType);  // off-load previously known packets into cProtocol125
+		case PACKET_CLIENT_STATUSES:      return ParseClientStatuses();
+		case PACKET_ENCRYPTION_KEY_RESP:  return ParseEncryptionKeyResponse();
+		case PACKET_LOCALE_VIEW_DISTANCE: return ParseLocaleViewDistance();
+		case PACKET_TAB_COMPLETION:       return ParseTabCompletion();
+	}
+}
+
+
+
+
+
+int cProtocol132::ParseBlockPlace(void)
+{
+	HANDLE_PACKET_READ(ReadBEInt, int,  PosX);
+	HANDLE_PACKET_READ(ReadByte,  Byte, PosY);
+	HANDLE_PACKET_READ(ReadBEInt, int,  PosZ);
+	HANDLE_PACKET_READ(ReadChar,  char, BlockFace);
+
+	cItem HeldItem;
+	int res = ParseItem(HeldItem);
+	if (res < 0)
+	{
+		return res;
+	}
+	
+	HANDLE_PACKET_READ(ReadChar, char, CursorX);
+	HANDLE_PACKET_READ(ReadChar, char, CursorY);
+	HANDLE_PACKET_READ(ReadChar, char, CursorZ);
+
+	m_Client->HandleRightClick(PosX, PosY, PosZ, BlockFace, CursorX, CursorY, CursorZ, HeldItem);
+	return PARSE_OK;
+}
+
+
+
+
+
+int cProtocol132::ParseHandshake(void)
+{
+	HANDLE_PACKET_READ(ReadByte,            Byte,    ProtocolVersion);
+	HANDLE_PACKET_READ(ReadBEUTF16String16, AString, Username);
+	HANDLE_PACKET_READ(ReadBEUTF16String16, AString, ServerHost);
+	HANDLE_PACKET_READ(ReadBEInt,           int,     ServerPort);
+	m_Username = Username;
+
+	if (!m_Client->HandleHandshake( m_Username ))
+	{
+		return PARSE_OK; // Player is not allowed into the server
+	}
+
+	// Send a 0xFD Encryption Key Request http://wiki.vg/Protocol#0xFD
+	CryptoPP::StringSink sink(m_ServerPublicKey);  // GCC won't allow inline instantiation in the following line, damned temporary refs
+	cRoot::Get()->GetServer()->GetPublicKey().Save(sink);
+	SendEncryptionKeyRequest();
+
+	return PARSE_OK;
+}
+
+
+
+
+
+int cProtocol132::ParseClientStatuses(void)
+{
+	HANDLE_PACKET_READ(ReadByte, byte, Status);
+	if ((Status & 1) == 0)
+	{
+		m_Client->HandleLogin(39, m_Username);
+	}
+	else
+	{
+		m_Client->HandleRespawn();
+	}
+	return PARSE_OK;
+}
+
+
+
+
+
+int cProtocol132::ParseEncryptionKeyResponse(void)
+{
+	HANDLE_PACKET_READ(ReadBEShort, short, EncKeyLength);
+	AString EncKey;
+	if (!m_ReceivedData.ReadString(EncKey, EncKeyLength))
+	{
+		return PARSE_INCOMPLETE;
+	}
+	HANDLE_PACKET_READ(ReadBEShort, short, EncNonceLength);
+	AString EncNonce;
+	if (!m_ReceivedData.ReadString(EncNonce, EncNonceLength))
+	{
+		return PARSE_INCOMPLETE;
+	}
+	if ((EncKeyLength > MAX_ENC_LEN) || (EncNonceLength > MAX_ENC_LEN))
+	{
+		LOGD("Too long encryption");
+		m_Client->Kick("Hacked client");
+		return PARSE_OK;
+	}
+	
+	HandleEncryptionKeyResponse(EncKey, EncNonce);
+	return PARSE_OK;
+}
+
+
+
+
+
+int cProtocol132::ParseLocaleViewDistance(void)
+{
+	HANDLE_PACKET_READ(ReadBEUTF16String16, AString, Locale);
+	HANDLE_PACKET_READ(ReadChar,            char,    ViewDistance);
+	HANDLE_PACKET_READ(ReadChar,            char,    ChatFlags);
+	HANDLE_PACKET_READ(ReadChar,            char,    ClientDifficulty);
+	// TODO: m_Client->HandleLocale(Locale);
+	// TODO: m_Client->HandleViewDistance(ViewDistance);
+	// TODO: m_Client->HandleChatFlags(ChatFlags);
+	// Ignoring client difficulty
+	return PARSE_OK;
+}
+
+
+
+
+
+int cProtocol132::ParseLogin(void)
+{
+	// Login packet not used in 1.3.2
+	return PARSE_ERROR;
+}
+
+
+
+
+
+int cProtocol132::ParsePlayerAbilities(void)
+{
+	HANDLE_PACKET_READ(ReadBool, bool, Flags);
+	HANDLE_PACKET_READ(ReadChar, char, FlyingSpeed);
+	HANDLE_PACKET_READ(ReadChar, char, WalkingSpeed);
+	// TODO: m_Client->HandlePlayerAbilities(...);
+	return PARSE_OK;
+}
+
+
+
+
+
+int cProtocol132::ParseTabCompletion(void)
+{
+	HANDLE_PACKET_READ(ReadBEUTF16String16, AString, Text);
+	m_Client->HandleTabCompletion(Text);
+	return PARSE_OK;
+}
+
+
+
+
+
+void cProtocol132::SendData(const char * a_Data, int a_Size)
+{
+	m_DataToSend.append(a_Data, a_Size);
+}
+
+
+
+
+
+void cProtocol132::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);
+			super::SendData((const char *)Encrypted, NumBytes);
+			a_Size -= NumBytes;
+			a_Data += NumBytes;
+		}
+	}
+	else
+	{
+		super::SendData(a_Data, a_Size);
+	}
+	m_DataToSend.clear();
+}
+
+
+
+
+
+void cProtocol132::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())
+	{
+		WriteShort(-1);
+		return;
+	}
+
+	// Send the enchantments:
+	cFastNBTWriter Writer;
+	const char * TagName = (a_Item.m_ItemType == E_ITEM_BOOK) ? "StoredEnchantments" : "ench";
+	a_Item.m_Enchantments.WriteToNBTCompound(Writer, TagName);
+	Writer.Finish();
+	AString Compressed;
+	CompressStringGZIP(Writer.GetResult().data(), Writer.GetResult().size(), Compressed);
+	WriteShort(Compressed.size());
+	SendData(Compressed.data(), Compressed.size());
+}
+
+
+
+
+
+int cProtocol132::ParseItem(cItem & a_Item)
+{
+	HANDLE_PACKET_READ(ReadBEShort, short, ItemType);
+
+	if (ItemType <= -1)
+	{
+		a_Item.Empty();
+		return PARSE_OK;
+	}
+	a_Item.m_ItemType = ItemType;
+
+	HANDLE_PACKET_READ(ReadChar,    char,  ItemCount);
+	HANDLE_PACKET_READ(ReadBEShort, short, ItemDamage);
+	a_Item.m_ItemCount  = ItemCount;
+	a_Item.m_ItemDamage = ItemDamage;
+	if (ItemCount <= 0)
+	{
+		a_Item.Empty();
+	}
+
+	HANDLE_PACKET_READ(ReadBEShort, short, MetadataLength);
+	if (MetadataLength <= 0)
+	{
+		return PARSE_OK;
+	}
+		
+	// Read the metadata
+	AString Metadata;
+	Metadata.resize(MetadataLength);
+	if (!m_ReceivedData.ReadBuf((void *)Metadata.data(), MetadataLength))
+	{
+		return PARSE_INCOMPLETE;
+	}
+	
+	return ParseItemMetadata(a_Item, Metadata);
+}
+
+
+
+
+
+int cProtocol132::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);
+		LOG("Cannot unGZIP item metadata:\n%s", HexDump.c_str());
+		return PARSE_ERROR;
+	}
+	
+	// Parse into NBT:
+	cParsedNBT NBT(Uncompressed.data(), Uncompressed.size());
+	if (!NBT.IsValid())
+	{
+		AString HexDump;
+		CreateHexDump(HexDump, Uncompressed.data(), Uncompressed.size(), 16);
+		LOG("Cannot parse NBT item metadata:\n%s", HexDump.c_str());
+		return PARSE_ERROR;
+	}
+	
+	// Load enchantments from the NBT:
+	for (int tag = NBT.GetFirstChild(NBT.GetRoot()); tag >= 0; tag = NBT.GetNextSibling(tag))
+	{
+		if (
+			(NBT.GetType(tag) == TAG_List) &&
+			(
+				(NBT.GetName(tag) == "ench") ||
+				(NBT.GetName(tag) == "StoredEnchantments")
+			)
+		)
+		{
+			a_Item.m_Enchantments.ParseFromNBT(NBT, tag);
+		}
+	}
+	
+	return PARSE_OK;
+}
+
+
+
+
+
+void cProtocol132::SendCompass(const cWorld & a_World)
+{
+	cCSLock Lock(m_CSPacket);
+	WriteByte(PACKET_COMPASS);
+	WriteInt((int)(a_World.GetSpawnX()));
+	WriteInt((int)(a_World.GetSpawnY()));
+	WriteInt((int)(a_World.GetSpawnZ()));
+	Flush();
+}
+
+
+
+
+
+void cProtocol132::SendEncryptionKeyRequest(void)
+{
+	cCSLock Lock(m_CSPacket);
+	WriteByte((char)0xfd);
+	WriteString(cRoot::Get()->GetServer()->GetServerID());
+	WriteShort((short)m_ServerPublicKey.size());
+	SendData(m_ServerPublicKey.data(), m_ServerPublicKey.size());
+	WriteShort(4);
+	WriteInt((int)(intptr_t)this);  // Using 'this' as the cryptographic nonce, so that we don't have to generate one each time :)
+	Flush();
+}
+
+
+
+
+
+void cProtocol132::HandleEncryptionKeyResponse(const AString & a_EncKey, const AString & a_EncNonce)
+{
+	// Decrypt EncNonce using privkey
+	RSAES<PKCS1v15>::Decryptor rsaDecryptor(cRoot::Get()->GetServer()->GetPrivateKey());
+	time_t CurTime = time(NULL);
+	CryptoPP::RandomPool rng;
+	rng.Put((const byte *)&CurTime, sizeof(CurTime));
+	byte DecryptedNonce[MAX_ENC_LEN];
+	DecodingResult res = rsaDecryptor.Decrypt(rng, (const byte *)a_EncNonce.data(), a_EncNonce.size(), DecryptedNonce);
+	if (!res.isValidCoding || (res.messageLength != 4))
+	{
+		LOGD("Bad nonce length");
+		m_Client->Kick("Hacked client");
+		return;
+	}
+	if (ntohl(*((int *)DecryptedNonce)) != (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(rng, (const byte *)a_EncKey.data(), a_EncKey.size(), DecryptedKey);
+	if (!res.isValidCoding || (res.messageLength != 16))
+	{
+		LOGD("Bad key length");
+		m_Client->Kick("Hacked client");
+		return;
+	}
+	
+	{
+		// Send encryption key response:
+		cCSLock Lock(m_CSPacket);
+		WriteByte((char)0xfc);
+		WriteShort(0);
+		WriteShort(0);
+		Flush();
+	}
+	
+	StartEncryption(DecryptedKey);
+	return;
+}
+
+
+
+
+
+void cProtocol132::StartEncryption(const byte * a_Key)
+{
+	m_Encryptor.SetKey(a_Key, 16, MakeParameters(Name::IV(), ConstByteArrayParameter(a_Key, 16))(Name::FeedbackSize(), 1));
+	m_Decryptor.SetKey(a_Key, 16, MakeParameters(Name::IV(), ConstByteArrayParameter(a_Key, 16))(Name::FeedbackSize(), 1));
+	m_IsEncrypted = true;
+	
+	// Prepare the m_AuthServerID:
+	CryptoPP::SHA1 Checksum;
+	AString ServerID = cRoot::Get()->GetServer()->GetServerID();
+	Checksum.Update((const byte *)ServerID.c_str(), ServerID.length());
+	Checksum.Update(a_Key, 16);
+	Checksum.Update((const byte *)m_ServerPublicKey.c_str(), m_ServerPublicKey.length());
+	byte Digest[20];
+	Checksum.Final(Digest);
+	DigestToJava(Digest, m_AuthServerID);
+}
+
+
+
+

src/Protocol/Protocol132.h

@@ -0,0 +1,102 @@
+
+// Protocol132.h
+
+// Interfaces to the cProtocol132 class representing the release 1.3.2 protocol (#39)
+
+
+
+
+
+#pragma once
+
+#include "Protocol125.h"
+#include "../../CryptoPP/modes.h"
+#include "../../CryptoPP/aes.h"
+
+
+
+
+
+class cProtocol132 :
+	public cProtocol125
+{
+	typedef cProtocol125 super;
+public:
+
+	cProtocol132(cClientHandle * a_Client);
+	virtual ~cProtocol132();
+
+	/// Called when client sends some data:
+	virtual void DataReceived(const char * a_Data, int a_Size) override;
+	
+	// Sending commands (alphabetically sorted):
+	virtual void SendBlockAction         (int a_BlockX, int a_BlockY, int a_BlockZ, char a_Byte1, char a_Byte2, BLOCKTYPE a_BlockType) override;
+	virtual void SendBlockBreakAnim      (int a_EntityID, int a_BlockX, int a_BlockY, int a_BlockZ, char a_Stage) override;
+	virtual void SendBlockChange         (int a_BlockX, int a_BlockY, int a_BlockZ, BLOCKTYPE a_BlockType, NIBBLETYPE a_BlockMeta) override;
+	virtual void SendChunkData           (int a_ChunkX, int a_ChunkZ, cChunkDataSerializer & a_Serializer) override;
+	virtual void SendCollectPickup       (const cPickup & a_Pickup, const cPlayer & a_Player) override;
+	virtual void SendDestroyEntity       (const cEntity & a_Entity) override;
+	virtual void SendEntityEquipment     (const cEntity & a_Entity, short a_SlotNum, const cItem & a_Item) override;
+	virtual void SendLogin               (const cPlayer & a_Player, const cWorld & a_World) override;
+	virtual void SendPlayerSpawn         (const cPlayer & a_Player) override;
+	virtual void SendSoundEffect         (const AString & a_SoundName, int a_SrcX, int a_SrcY, int a_SrcZ, float a_Volume, float a_Pitch) override;  // a_Src coords are Block * 8
+	virtual void SendSoundParticleEffect (int a_EffectID, int a_SrcX, int a_SrcY, int a_SrcZ, int a_Data) override;
+	virtual void SendSpawnMob            (const cMonster & a_Mob) override;
+	virtual void SendTabCompletionResults(const AStringVector & a_Results) override;
+	virtual void SendUnloadChunk         (int a_ChunkX, int a_ChunkZ) override;
+	virtual void SendWholeInventory      (const cWindow & a_Window) override;
+
+	virtual AString GetAuthServerID(void) override;
+
+	/// Handling of the additional packets:
+	virtual int ParsePacket(unsigned char a_PacketType) override;
+	
+	// Modified packets:
+	virtual int ParseBlockPlace     (void) override;
+	virtual int ParseHandshake      (void) override;
+	virtual int ParseLogin          (void) override;
+	virtual int ParsePlayerAbilities(void) override;
+	
+	// New packets:
+	virtual int ParseClientStatuses       (void);
+	virtual int ParseEncryptionKeyResponse(void);
+	virtual int ParseLocaleViewDistance   (void);
+	virtual int ParseTabCompletion        (void);
+	
+protected:
+	bool m_IsEncrypted;
+	CryptoPP::CFB_Mode<CryptoPP::AES>::Decryption m_Decryptor;
+	CryptoPP::CFB_Mode<CryptoPP::AES>::Encryption m_Encryptor;
+	AString m_DataToSend;
+	
+	/// The ServerID used for session authentication; set in StartEncryption(), used in GetAuthServerID()
+	AString m_AuthServerID;
+	
+	/// The server's public key, as used by SendEncryptionKeyRequest() and StartEncryption()
+	AString m_ServerPublicKey;
+	
+	virtual void SendData(const char * a_Data, int a_Size) override;
+	
+	// DEBUG:
+	virtual void Flush(void) override;
+	
+	// Items in slots are sent differently
+	virtual void WriteItem(const cItem & a_Item) override;
+	virtual int  ParseItem(cItem & a_Item) override;
+	
+	/// Parses the metadata that may come with the item.
+	int ParseItemMetadata(cItem & a_Item, const AString & a_Metadata);
+
+	virtual void SendCompass(const cWorld & a_World);
+	virtual void SendEncryptionKeyRequest(void);
+	
+	/// Decrypts the key and nonce, checks nonce, starts the symmetric encryption
+	void HandleEncryptionKeyResponse(const AString & a_EncKey, const AString & a_EncNonce);
+	
+	/// Starts the symmetric encryption with the specified key; also sets m_AuthServerID
+	void StartEncryption(const byte * a_Key);
+} ;
+
+
+
+

src/Protocol/Protocol14x.cpp

@@ -0,0 +1,256 @@
+
+// Protocol14x.cpp
+
+/*
+Implements the 1.4.x protocol classes representing these protocols:
+- cProtocol142:
+	- release 1.4.2 protocol (#47)
+	- release 1.4.4 protocol (#49) - the same protocol class is used, because the only difference is in a packet that MCServer doesn't implement yet (ITEM_DATA)
+	- release 1.4.5 protocol (same as 1.4.4)
+- cProtocol146:
+	- release 1.4.6 protocol (#51)
+*/
+
+#include "Globals.h"
+#include "Protocol14x.h"
+#include "../Root.h"
+#include "../Server.h"
+#include "../ClientHandle.h"
+#include "../../CryptoPP/randpool.h"
+#include "../Item.h"
+#include "ChunkDataSerializer.h"
+#include "../Entities/Player.h"
+#include "../Mobs/Monster.h"
+#include "../UI/Window.h"
+#include "../Entities/Pickup.h"
+#include "../Entities/FallingBlock.h"
+
+
+
+
+
+#define HANDLE_PACKET_READ(Proc, Type, Var) \
+	Type Var; \
+	{ \
+		if (!m_ReceivedData.Proc(Var)) \
+		{ \
+			m_ReceivedData.CheckValid(); \
+			return PARSE_INCOMPLETE; \
+		} \
+		m_ReceivedData.CheckValid(); \
+	}
+
+
+
+
+
+enum
+{
+	PACKET_UPDATE_TIME           = 0x04,
+	PACKET_PICKUP_SPAWN          = 0x15,
+	PACKET_SPAWN_OBJECT          = 0x17,
+	PACKET_ENTITY_METADATA       = 0x28,
+	PACKET_SOUND_PARTICLE_EFFECT = 0x3d
+} ;
+
+
+
+
+
+///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+// cProtocol142:
+
+cProtocol142::cProtocol142(cClientHandle * a_Client) :
+	super(a_Client)
+{
+}
+
+
+
+
+
+int cProtocol142::ParseLocaleViewDistance(void)
+{
+	HANDLE_PACKET_READ(ReadBEUTF16String16, AString, Locale);
+	HANDLE_PACKET_READ(ReadChar,            char,    ViewDistance);
+	HANDLE_PACKET_READ(ReadChar,            char,    ChatFlags);
+	HANDLE_PACKET_READ(ReadChar,            char,    ClientDifficulty);
+	HANDLE_PACKET_READ(ReadChar,            char,    ShouldShowCape);  // <-- new in 1.4.2
+	// TODO: m_Client->HandleLocale(Locale);
+	// TODO: m_Client->HandleViewDistance(ViewDistance);
+	// TODO: m_Client->HandleChatFlags(ChatFlags);
+	// Ignoring client difficulty
+	return PARSE_OK;
+}
+
+
+
+
+
+void cProtocol142::SendPickupSpawn(const cPickup & a_Pickup)
+{
+	cCSLock Lock(m_CSPacket);
+	WriteByte   (PACKET_PICKUP_SPAWN);
+	WriteInt    (a_Pickup.GetUniqueID());
+	WriteItem   (a_Pickup.GetItem());
+	WriteVectorI((Vector3i)(a_Pickup.GetPosition() * 32));
+	WriteByte   ((char)(a_Pickup.GetSpeed().x * 8));
+	WriteByte   ((char)(a_Pickup.GetSpeed().y * 8));
+	WriteByte   ((char)(a_Pickup.GetSpeed().z * 8));
+	Flush();
+}
+
+
+
+
+
+void cProtocol142::SendSoundParticleEffect(int a_EffectID, int a_SrcX, int a_SrcY, int a_SrcZ, int a_Data)
+{
+	cCSLock Lock(m_CSPacket);
+	WriteByte(PACKET_SOUND_PARTICLE_EFFECT);
+	WriteInt (a_EffectID);
+	WriteInt (a_SrcX);
+	WriteByte(a_SrcY);
+	WriteInt (a_SrcZ);
+	WriteInt (a_Data);
+	WriteBool(0);
+	Flush();
+}
+
+
+
+
+
+void cProtocol142::SendTimeUpdate(Int64 a_WorldAge, Int64 a_TimeOfDay)
+{
+	cCSLock Lock(m_CSPacket);
+	WriteByte (PACKET_UPDATE_TIME);
+	WriteInt64(a_WorldAge);
+	WriteInt64(a_TimeOfDay);
+	Flush();
+}
+
+
+
+
+
+
+///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+// cProtocol146:
+
+cProtocol146::cProtocol146(cClientHandle * a_Client) :
+	super(a_Client)
+{
+}
+
+
+
+
+
+void cProtocol146::SendPickupSpawn(const cPickup & a_Pickup)
+{
+	ASSERT(!a_Pickup.GetItem().IsEmpty());
+	
+	cCSLock Lock(m_CSPacket);
+
+	// Send a SPAWN_OBJECT packet for the base entity:
+	WriteByte(PACKET_SPAWN_OBJECT);
+	WriteInt (a_Pickup.GetUniqueID());
+	WriteByte(0x02);
+	WriteInt ((int)(a_Pickup.GetPosX() * 32));
+	WriteInt ((int)(a_Pickup.GetPosY() * 32));
+	WriteInt ((int)(a_Pickup.GetPosZ() * 32));
+	WriteInt (1);
+	WriteShort((short)(a_Pickup.GetSpeed().x * 32));
+	WriteShort((short)(a_Pickup.GetSpeed().y * 32));
+	WriteShort((short)(a_Pickup.GetSpeed().z * 32));
+	WriteByte(0);
+	WriteByte(0);
+	
+	// Send a ENTITY_METADATA packet with the slot info:
+	WriteByte(PACKET_ENTITY_METADATA);
+	WriteInt(a_Pickup.GetUniqueID());
+	WriteByte(0xaa);  // a slot value at index 10
+	WriteItem(a_Pickup.GetItem());
+	WriteByte(0x7f);  // End of metadata
+	Flush();
+}
+
+
+
+
+
+void cProtocol146::SendSpawnFallingBlock(const cFallingBlock & a_FallingBlock)
+{
+	// Send a spawn object / vehicle packet
+	cCSLock Lock(m_CSPacket);
+
+	WriteByte(PACKET_SPAWN_OBJECT);
+	WriteInt (a_FallingBlock.GetUniqueID());
+	WriteByte(70);
+	WriteInt ((int)(a_FallingBlock.GetPosX() * 32));
+	WriteInt ((int)(a_FallingBlock.GetPosY() * 32));
+	WriteInt ((int)(a_FallingBlock.GetPosZ() * 32));
+	WriteByte (0);  // Pitch
+	WriteByte (0);  // Yaw
+	WriteInt (a_FallingBlock.GetBlockType());  // data indicator = blocktype
+	WriteShort((short)(a_FallingBlock.GetSpeedX() * 400));
+	WriteShort((short)(a_FallingBlock.GetSpeedY() * 400));
+	WriteShort((short)(a_FallingBlock.GetSpeedZ() * 400));
+	Flush();
+}
+
+
+
+
+
+void cProtocol146::SendSpawnObject(const cEntity & a_Entity, char a_ObjectType, int a_ObjectData, Byte a_Yaw, Byte a_Pitch)
+{
+	cCSLock Lock(m_CSPacket);
+	WriteByte(PACKET_SPAWN_OBJECT);
+	WriteInt (a_Entity.GetUniqueID());
+	WriteByte(a_ObjectType);
+	WriteInt ((int)(a_Entity.GetPosX() * 32));
+	WriteInt ((int)(a_Entity.GetPosY() * 32));
+	WriteInt ((int)(a_Entity.GetPosZ() * 32));
+	WriteByte(a_Pitch);
+	WriteByte(a_Yaw);
+	WriteInt (a_ObjectData);
+	if (a_ObjectData != 0)
+	{
+		WriteShort((short)(a_Entity.GetSpeedX() * 400));
+		WriteShort((short)(a_Entity.GetSpeedY() * 400));
+		WriteShort((short)(a_Entity.GetSpeedZ() * 400));
+	}
+	Flush();
+}
+
+
+
+
+
+void cProtocol146::SendSpawnVehicle(const cEntity & a_Vehicle, char a_VehicleType, char a_VehicleSubType)
+{
+	cCSLock Lock(m_CSPacket);
+	WriteByte (PACKET_SPAWN_OBJECT);
+	WriteInt  (a_Vehicle.GetUniqueID());
+	WriteByte (a_VehicleType);
+	WriteInt  ((int)(a_Vehicle.GetPosX() * 32));
+	WriteInt  ((int)(a_Vehicle.GetPosY() * 32));
+	WriteInt  ((int)(a_Vehicle.GetPosZ() * 32));
+	WriteByte ((Byte)((a_Vehicle.GetPitch() / 360.f) * 256));
+	WriteByte ((Byte)((a_Vehicle.GetRotation() / 360.f) * 256));
+	WriteInt  (a_VehicleSubType);
+	if (a_VehicleSubType != 0)
+	{
+		WriteShort((short)(a_Vehicle.GetSpeedX() * 400));
+		WriteShort((short)(a_Vehicle.GetSpeedY() * 400));
+		WriteShort((short)(a_Vehicle.GetSpeedZ() * 400));
+	}
+	Flush();
+}
+
+
+
+
+

src/Protocol/Protocol14x.h

@@ -0,0 +1,63 @@
+
+// Protocol14x.h
+
+/*
+Interfaces to the 1.4.x protocol classes representing these protocols:
+- cProtocol142:
+	- release 1.4.2 protocol (#47)
+	- release 1.4.4 protocol (#49) - the same protocol class is used, because the only difference is in a packet that MCServer doesn't implement yet (ITEM_DATA)
+	- release 1.4.5 protocol (same as 1.4.4)
+- cProtocol146:
+	- release 1.4.6 protocol (#51)
+*/
+
+
+
+
+
+#pragma once
+
+#include "Protocol132.h"
+
+
+
+
+
+class cProtocol142 :
+	public cProtocol132
+{
+	typedef cProtocol132 super;
+	
+public:
+	cProtocol142(cClientHandle * a_Client);
+
+	// Sending commands (alphabetically sorted):
+	virtual void SendPickupSpawn        (const cPickup & a_Pickup) override;
+	virtual void SendSoundParticleEffect(int a_EffectID, int a_SrcX, int a_SrcY, int a_SrcZ, int a_Data) override;
+	virtual void SendTimeUpdate         (Int64 a_WorldAge, Int64 a_TimeOfDay) override;
+
+	// Specific packet parsers:
+	virtual int ParseLocaleViewDistance(void) override;
+} ;
+
+
+
+
+
+class cProtocol146 :
+	public cProtocol142
+{
+	typedef cProtocol142 super;
+	
+public:
+	cProtocol146(cClientHandle * a_Client);
+	
+	virtual void SendPickupSpawn      (const cPickup & a_Pickup) override;
+	virtual void SendSpawnFallingBlock(const cFallingBlock & a_FallingBlock) override;
+	virtual void SendSpawnObject      (const cEntity & a_Entity, char a_ObjectType, int a_ObjectData, Byte a_Yaw, Byte a_Pitch) override;
+	virtual void SendSpawnVehicle     (const cEntity & a_Vehicle, char a_VehicleType, char a_VehicleSubType) override;
+} ;
+
+
+
+

src/Protocol/Protocol15x.cpp

@@ -0,0 +1,138 @@
+
+// Protocol15x.cpp
+
+/*
+Implements the 1.5.x protocol classes:
+	- cProtocol150
+		- release 1.5 protocol (#60)
+		- release 1.5.2 protocol (#61, no relevant changes found)
+*/
+
+#include "Globals.h"
+#include "Protocol15x.h"
+#include "../ClientHandle.h"
+#include "../Item.h"
+#include "../UI/Window.h"
+
+
+
+
+
+#define HANDLE_PACKET_READ(Proc, Type, Var) \
+	Type Var; \
+	{ \
+		if (!m_ReceivedData.Proc(Var)) \
+		{ \
+			m_ReceivedData.CheckValid(); \
+			return PARSE_INCOMPLETE; \
+		} \
+		m_ReceivedData.CheckValid(); \
+	}
+
+
+
+
+
+enum
+{
+	PACKET_WINDOW_OPEN = 0x64,
+} ;
+
+
+
+
+
+
+///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+// cProtocol150:
+
+cProtocol150::cProtocol150(cClientHandle * a_Client) :
+	super(a_Client)
+{
+}
+
+
+
+
+
+void cProtocol150::SendWindowOpen(const cWindow & a_Window)
+{
+	if (a_Window.GetWindowType() < 0)
+	{
+		// Do not send for inventory windows
+		return;
+	}
+	cCSLock Lock(m_CSPacket);
+	WriteByte  (PACKET_WINDOW_OPEN);
+	WriteByte  (a_Window.GetWindowID());
+	WriteByte  (a_Window.GetWindowType());
+	WriteString(a_Window.GetWindowTitle());
+	WriteByte  (a_Window.GetNumNonInventorySlots());
+	WriteByte  (1);  // Use title
+	Flush();
+}
+
+
+
+
+
+int cProtocol150::ParseWindowClick(void)
+{
+	HANDLE_PACKET_READ(ReadChar,    char,  WindowID);
+	HANDLE_PACKET_READ(ReadBEShort, short, SlotNum);
+	HANDLE_PACKET_READ(ReadByte,    Byte,  Button);
+	HANDLE_PACKET_READ(ReadBEShort, short, TransactionID);
+	HANDLE_PACKET_READ(ReadByte,    Byte,  Mode);
+	cItem HeldItem;
+	int res = ParseItem(HeldItem);
+	if (res < 0)
+	{
+		return res;
+	}
+	
+	// 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;
+	}
+	
+	if (Action == caUnknown)
+	{
+		LOGWARNING("Received an unknown click action combination: Mode = %d, Button = %d, Slot = %d, HeldItem = %s. Ignoring packet.",
+			Mode, Button, SlotNum, ItemToFullString(HeldItem).c_str()
+		);
+		ASSERT(!"Unknown click action");
+		return PARSE_OK;
+	}
+	
+	m_Client->HandleWindowClick(WindowID, SlotNum, Action, HeldItem);
+	return PARSE_OK;
+}
+
+
+
+
+

src/Protocol/Protocol15x.h

@@ -0,0 +1,38 @@
+
+// Protocol15x.h
+
+/*
+Declares the 1.5.x protocol classes:
+	- cProtocol150
+		- release 1.5 and 1.5.1 protocol (#60)
+		- release 1.5.2 protocol (#61; no relevant changes found)
+*/
+
+
+
+
+
+#pragma once
+
+#include "Protocol14x.h"
+
+
+
+
+
+class cProtocol150 :
+	public cProtocol146
+{
+	typedef cProtocol146 super;
+	
+public:
+	cProtocol150(cClientHandle * a_Client);
+	
+	virtual void SendWindowOpen(const cWindow & a_Window) override;
+	
+	virtual int ParseWindowClick(void);
+} ;
+
+
+
+

src/Protocol/Protocol16x.cpp

@@ -0,0 +1,268 @@
+
+// Protocol16x.cpp
+
+/*
+Implements the 1.6.x protocol classes:
+	- cProtocol161
+		- release 1.6.1 protocol (#73)
+	- cProtocol162
+		- release 1.6.2 protocol (#74)
+		- release 1.6.3 protocol (#77) - no relevant changes
+		- release 1.6.4 protocol (#78) - no relevant changes
+(others may be added later in the future for the 1.6 release series)
+*/
+
+#include "Globals.h"
+#include "Protocol16x.h"
+#include "../ClientHandle.h"
+#include "../Entities/Entity.h"
+#include "../Entities/Player.h"
+#include "../UI/Window.h"
+
+
+
+
+
+#define HANDLE_PACKET_READ(Proc, Type, Var) \
+	Type Var; \
+	{ \
+		if (!m_ReceivedData.Proc(Var)) \
+		{ \
+			m_ReceivedData.CheckValid(); \
+			return PARSE_INCOMPLETE; \
+		} \
+		m_ReceivedData.CheckValid(); \
+	}
+
+
+
+
+
+enum
+{
+	PACKET_CHAT              = 0x03,
+	PACKET_UPDATE_HEALTH     = 0x08,
+	PACKET_STEER_VEHICLE     = 0x1b,
+	PACKET_ATTACH_ENTITY     = 0x27,
+	PACKET_ENTITY_PROPERTIES = 0x2c,
+	PACKET_WINDOW_OPEN       = 0x64,
+	PACKET_TILE_EDITOR_OPEN  = 0x85,
+	PACKET_PLAYER_ABILITIES  = 0xca,
+} ;
+
+
+
+
+
+///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+// cProtocol161:
+
+cProtocol161::cProtocol161(cClientHandle * a_Client) :
+	super(a_Client)
+{
+}
+
+
+
+
+
+void cProtocol161::SendAttachEntity(const cEntity & a_Entity, const cEntity * a_Vehicle)
+{
+	cCSLock Lock(m_CSPacket);
+	WriteByte(PACKET_ATTACH_ENTITY);
+	WriteInt(a_Entity.GetUniqueID());
+	WriteInt((a_Vehicle == NULL) ? -1 : a_Vehicle->GetUniqueID());
+	WriteBool(false);  // TODO: "Should use leash?" -> no
+	Flush();
+}
+
+
+
+
+
+void cProtocol161::SendChat(const AString & a_Message)
+{
+	super::SendChat(Printf("{\"text\":\"%s\"}", EscapeString(a_Message).c_str()));
+}
+
+
+
+
+
+void cProtocol161::SendEditSign(int a_BlockX, int a_BlockY, int a_BlockZ)
+{
+	cCSLock Lock(m_CSPacket);
+	WriteByte(PACKET_TILE_EDITOR_OPEN);
+	WriteByte(0);
+	WriteInt(a_BlockX);
+	WriteInt(a_BlockY);
+	WriteInt(a_BlockZ);
+	Flush();
+}
+
+
+
+
+
+void cProtocol161::SendGameMode(eGameMode a_GameMode)
+{
+	super::SendGameMode(a_GameMode);
+	SendPlayerMaxSpeed();
+}
+
+
+
+
+
+void cProtocol161::SendHealth(void)
+{
+	cCSLock Lock(m_CSPacket);
+	WriteByte (PACKET_UPDATE_HEALTH);
+	WriteFloat((float)m_Client->GetPlayer()->GetHealth());
+	WriteShort(m_Client->GetPlayer()->GetFoodLevel());
+	WriteFloat((float)m_Client->GetPlayer()->GetFoodSaturationLevel());
+	Flush();
+}
+
+
+
+
+
+void cProtocol161::SendPlayerMaxSpeed(void)
+{
+	cCSLock Lock(m_CSPacket);
+	WriteByte(PACKET_ENTITY_PROPERTIES);
+	WriteInt(m_Client->GetPlayer()->GetUniqueID());
+	WriteInt(1);
+	WriteString("generic.movementSpeed");
+	WriteDouble(m_Client->GetPlayer()->GetMaxSpeed());
+	Flush();
+}
+
+
+
+
+
+void cProtocol161::SendRespawn(void)
+{
+	// Besides sending the respawn, we need to also send the player max speed, otherwise the client reverts to super-fast
+	super::SendRespawn();
+	SendPlayerMaxSpeed();
+}
+
+
+
+
+
+void cProtocol161::SendWindowOpen(const cWindow & a_Window)
+{
+	if (a_Window.GetWindowType() < 0)
+	{
+		// Do not send for inventory windows
+		return;
+	}
+	cCSLock Lock(m_CSPacket);
+	WriteByte  (PACKET_WINDOW_OPEN);
+	WriteByte  (a_Window.GetWindowID());
+	WriteByte  (a_Window.GetWindowType());
+	WriteString(a_Window.GetWindowTitle());
+	WriteByte  (a_Window.GetNumNonInventorySlots());
+	WriteByte  (1);  // Use title
+	if (a_Window.GetWindowType() == cWindow::wtAnimalChest)
+	{
+		WriteInt(0);  // TODO: The animal's EntityID
+	}
+	Flush();
+}
+
+
+
+
+
+int cProtocol161::ParseEntityAction(void)
+{
+	HANDLE_PACKET_READ(ReadBEInt, int,  EntityID);
+	HANDLE_PACKET_READ(ReadChar,  char, ActionID);
+	HANDLE_PACKET_READ(ReadBEInt, int,  UnknownHorseVal);
+	m_Client->HandleEntityAction(EntityID, ActionID);
+	return PARSE_OK;
+}
+
+
+
+
+
+int cProtocol161::ParsePlayerAbilities(void)
+{
+	HANDLE_PACKET_READ(ReadByte,    Byte,  Flags);
+	HANDLE_PACKET_READ(ReadBEFloat, float, FlyingSpeed);
+	HANDLE_PACKET_READ(ReadBEFloat, float, WalkingSpeed);
+	// TODO: m_Client->HandlePlayerAbilities(...);
+	return PARSE_OK;
+}
+
+
+
+
+
+int cProtocol161::ParseSteerVehicle(void)
+{
+	HANDLE_PACKET_READ(ReadBEFloat, float, Sideways);
+	HANDLE_PACKET_READ(ReadBEFloat, float, Forward);
+	HANDLE_PACKET_READ(ReadBool,    bool,  Jump);
+	HANDLE_PACKET_READ(ReadBool,    bool,  Unmount);
+	if (Unmount)
+	{
+		m_Client->HandleUnmount();
+	}
+	else
+	{
+		m_Client->HandleSteerVehicle(Forward, Sideways);
+	}
+	return PARSE_OK;
+}
+
+
+
+
+
+int cProtocol161::ParsePacket(unsigned char a_PacketType)
+{
+	switch (a_PacketType)
+	{
+		case PACKET_STEER_VEHICLE: return ParseSteerVehicle();
+		default:                   return super::ParsePacket(a_PacketType);
+	}
+}
+
+
+
+
+
+///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+// cProtocol162:
+
+cProtocol162::cProtocol162(cClientHandle * a_Client) :
+	super(a_Client)
+{
+}
+
+
+
+
+
+void cProtocol162::SendPlayerMaxSpeed(void)
+{
+	cCSLock Lock(m_CSPacket);
+	WriteByte(PACKET_ENTITY_PROPERTIES);
+	WriteInt(m_Client->GetPlayer()->GetUniqueID());
+	WriteInt(1);
+	WriteString("generic.movementSpeed");
+	WriteDouble(m_Client->GetPlayer()->GetMaxSpeed());
+	WriteShort(0);
+	Flush();
+}
+
+
+
+

src/Protocol/Protocol16x.h

@@ -0,0 +1,76 @@
+
+// Protocol16x.h
+
+/*
+Declares the 1.6.x protocol classes:
+	- cProtocol161
+		- release 1.6.1 protocol (#73)
+	- cProtocol162
+		- release 1.6.2 protocol (#74)
+		- release 1.6.3 protocol (#77) - no relevant changes
+		- release 1.6.4 protocol (#78) - no relevant changes
+(others may be added later in the future for the 1.6 release series)
+*/
+
+
+
+
+
+#pragma once
+
+#include "Protocol15x.h"
+
+
+
+
+
+class cProtocol161 :
+	public cProtocol150
+{
+	typedef cProtocol150 super;
+	
+public:
+	cProtocol161(cClientHandle * a_Client);
+	
+protected:
+
+	// cProtocol150 overrides:
+	virtual void SendAttachEntity  (const cEntity & a_Entity, const cEntity * a_Vehicle) override;
+	virtual void SendChat          (const AString & a_Message) override;
+	virtual void SendEditSign      (int a_BlockX, int a_BlockY, int a_BlockZ) override;  ///< Request the client to open up the sign editor for the sign (1.6+)
+	virtual void SendGameMode      (eGameMode a_GameMode) override;
+	virtual void SendHealth        (void) override;
+	virtual void SendPlayerMaxSpeed(void) override;
+	virtual void SendRespawn       (void) override;
+	virtual void SendWindowOpen    (const cWindow & a_Window) override;
+	
+	virtual int ParseEntityAction   (void) override;
+	virtual int ParsePlayerAbilities(void) override;
+	
+	// New packets:
+	virtual int ParseSteerVehicle(void);
+
+	// Enable new packets' handling
+	virtual int ParsePacket(unsigned char a_PacketType) override;
+} ;
+
+
+
+
+
+class cProtocol162 :
+	public cProtocol161
+{
+	typedef cProtocol161 super;
+	
+public:
+	cProtocol162(cClientHandle * a_Client);
+
+protected:
+	// cProtocol161 overrides:
+	virtual void SendPlayerMaxSpeed(void) override;
+} ;
+
+
+
+

src/Protocol/Protocol17x.h

@@ -0,0 +1,258 @@
+
+// Protocol17x.h
+
+/*
+Declares 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)
+*/
+
+
+
+
+
+#pragma once
+
+#include "Protocol.h"
+#include "../ByteBuffer.h"
+#include "../../CryptoPP/modes.h"
+#include "../../CryptoPP/aes.h"
+
+
+
+
+
+class cProtocol172 :
+	public cProtocol  // TODO
+{
+	typedef cProtocol super;  // TODO
+	
+public:
+
+	cProtocol172(cClientHandle * a_Client, const AString & a_ServerAddress, UInt16 a_ServerPort, UInt32 a_State);
+	
+	/// Called when client sends some data:
+	virtual void DataReceived(const char * a_Data, int a_Size) override;
+
+	/// Sending stuff to clients (alphabetically sorted):
+	virtual void SendAttachEntity        (const cEntity & a_Entity, const cEntity * a_Vehicle) override;
+	virtual void SendBlockAction         (int a_BlockX, int a_BlockY, int a_BlockZ, char a_Byte1, char a_Byte2, BLOCKTYPE a_BlockType) override;
+	virtual void SendBlockBreakAnim	     (int a_EntityID, int a_BlockX, int a_BlockY, int a_BlockZ, char a_Stage) override;
+	virtual void SendBlockChange         (int a_BlockX, int a_BlockY, int a_BlockZ, BLOCKTYPE a_BlockType, NIBBLETYPE a_BlockMeta) override;
+	virtual void SendBlockChanges        (int a_ChunkX, int a_ChunkZ, const sSetBlockVector & a_Changes) override;
+	virtual void SendChat                (const AString & a_Message) override;
+	virtual void SendChunkData           (int a_ChunkX, int a_ChunkZ, cChunkDataSerializer & a_Serializer) override;
+	virtual void SendCollectPickup       (const cPickup & a_Pickup, const cPlayer & a_Player) override;
+	virtual void SendDestroyEntity       (const cEntity & a_Entity) override;
+	virtual void SendDisconnect          (const AString & a_Reason) override;
+	virtual void SendEditSign            (int a_BlockX, int a_BlockY, int a_BlockZ) override;  ///< Request the client to open up the sign editor for the sign (1.6+)
+	virtual void SendEntityEquipment     (const cEntity & a_Entity, short a_SlotNum, const cItem & a_Item) override;
+	virtual void SendEntityHeadLook      (const cEntity & a_Entity) override;
+	virtual void SendEntityLook          (const cEntity & a_Entity) override;
+	virtual void SendEntityMetadata      (const cEntity & a_Entity) override;
+	virtual void SendEntityProperties    (const cEntity & a_Entity) override;
+	virtual void SendEntityRelMove       (const cEntity & a_Entity, char a_RelX, char a_RelY, char a_RelZ) override;
+	virtual void SendEntityRelMoveLook   (const cEntity & a_Entity, char a_RelX, char a_RelY, char a_RelZ) override;
+	virtual void SendEntityStatus        (const cEntity & a_Entity, char a_Status) override;
+	virtual void SendEntityVelocity      (const cEntity & a_Entity) override;
+	virtual void SendExplosion           (double a_BlockX, double a_BlockY, double a_BlockZ, float a_Radius, const cVector3iArray & a_BlocksAffected, const Vector3d & a_PlayerMotion) override;
+	virtual void SendGameMode            (eGameMode a_GameMode) override;
+	virtual void SendHealth              (void) override;
+	virtual void SendInventorySlot       (char a_WindowID, short a_SlotNum, const cItem & a_Item) override;
+	virtual void SendKeepAlive           (int a_PingID) override;
+	virtual void SendLogin               (const cPlayer & a_Player, const cWorld & a_World) override;
+	virtual void SendPickupSpawn         (const cPickup & a_Pickup) override;
+	virtual void SendPlayerAbilities     (void) override;
+	virtual void SendPlayerAnimation     (const cPlayer & a_Player, char a_Animation) override;
+	virtual void SendPlayerListItem      (const cPlayer & a_Player, bool a_IsOnline) override;
+	virtual void SendPlayerMaxSpeed      (void) override;
+	virtual void SendPlayerMoveLook      (void) override;
+	virtual void SendPlayerPosition      (void) override;
+	virtual void SendPlayerSpawn         (const cPlayer & a_Player) override;
+	virtual void SendRespawn             (void) override;
+	virtual void SendSoundEffect         (const AString & a_SoundName, int a_SrcX, int a_SrcY, int a_SrcZ, float a_Volume, float a_Pitch) override;  // a_Src coords are Block * 8
+	virtual void SendSoundParticleEffect (int a_EffectID, int a_SrcX, int a_SrcY, int a_SrcZ, int a_Data) override;
+	virtual void SendSpawnFallingBlock   (const cFallingBlock & a_FallingBlock) override;
+	virtual void SendSpawnMob            (const cMonster & a_Mob) override;
+	virtual void SendSpawnObject         (const cEntity & a_Entity, char a_ObjectType, int a_ObjectData, Byte a_Yaw, Byte a_Pitch) override;
+	virtual void SendSpawnVehicle        (const cEntity & a_Vehicle, char a_VehicleType, char a_VehicleSubType) override;
+	virtual void SendTabCompletionResults(const AStringVector & a_Results) override;
+	virtual void SendTeleportEntity      (const cEntity & a_Entity) override;
+	virtual void SendThunderbolt         (int a_BlockX, int a_BlockY, int a_BlockZ) override;
+	virtual void SendTimeUpdate          (Int64 a_WorldAge, Int64 a_TimeOfDay) override;
+	virtual void SendUnloadChunk         (int a_ChunkX, int a_ChunkZ) override;
+	virtual void 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) override;
+	virtual void SendUseBed              (const cEntity & a_Entity, int a_BlockX, int a_BlockY, int a_BlockZ ) override;
+	virtual void SendWeather             (eWeather a_Weather) override;
+	virtual void SendWholeInventory      (const cWindow & a_Window) override;
+	virtual void SendWindowClose         (const cWindow & a_Window) override;
+	virtual void SendWindowOpen          (const cWindow & a_Window) override;
+	virtual void SendWindowProperty      (const cWindow & a_Window, short a_Property, short a_Value) override;
+
+	virtual AString GetAuthServerID(void) override { return m_AuthServerID; }
+
+protected:
+
+	/// Composes individual packets in the protocol's m_OutPacketBuffer; sends them upon being destructed
+	class cPacketizer
+	{
+	public:
+		cPacketizer(cProtocol172 & a_Protocol, UInt32 a_PacketType) :
+			m_Protocol(a_Protocol),
+			m_Out(a_Protocol.m_OutPacketBuffer),
+			m_Lock(a_Protocol.m_CSPacket)
+		{
+			m_Out.WriteVarInt(a_PacketType);
+		}
+		
+		~cPacketizer();
+
+		void WriteBool(bool a_Value)
+		{
+			m_Out.WriteBool(a_Value);
+		}
+		
+		void WriteByte(Byte a_Value)
+		{
+			m_Out.WriteByte(a_Value);
+		}
+		
+		void WriteChar(char a_Value)
+		{
+			m_Out.WriteChar(a_Value);
+		}
+		
+		void WriteShort(short a_Value)
+		{
+			m_Out.WriteBEShort(a_Value);
+		}
+		
+		void WriteInt(int a_Value)
+		{
+			m_Out.WriteBEInt(a_Value);
+		}
+		
+		void WriteInt64(Int64 a_Value)
+		{
+			m_Out.WriteBEInt64(a_Value);
+		}
+		
+		void WriteFloat(float a_Value)
+		{
+			m_Out.WriteBEFloat(a_Value);
+		}
+		
+		void WriteDouble(double a_Value)
+		{
+			m_Out.WriteBEDouble(a_Value);
+		}
+		
+		void WriteVarInt(UInt32 a_Value)
+		{
+			m_Out.WriteVarInt(a_Value);
+		}
+		
+		void WriteString(const AString & a_Value)
+		{
+			m_Out.WriteVarUTF8String(a_Value);
+		}
+		
+		void WriteBuf(const char * a_Data, int a_Size)
+		{
+			m_Out.Write(a_Data, a_Size);
+		}
+		
+		void WriteItem(const cItem & a_Item);
+		void WriteByteAngle(double a_Angle);  // Writes the specified angle using a single byte
+		void WriteFPInt(double a_Value);  // Writes the double value as a 27:5 fixed-point integer
+		void WriteEntityMetadata(const cEntity & a_Entity);  // Writes the metadata for the specified entity, not including the terminating 0x7f
+		void WriteMobMetadata(const cMonster & a_Mob);  // Writes the mob-specific metadata for the specified mob
+		void WriteEntityProperties(const cEntity & a_Entity);  // Writes the entity properties for the specified entity, including the Count field
+		
+	protected:
+		cProtocol172 & m_Protocol;
+		cByteBuffer & m_Out;
+		cCSLock m_Lock;
+	} ;
+
+	AString m_ServerAddress;
+	
+	UInt16 m_ServerPort;
+	
+	AString m_AuthServerID;
+	
+	/// State of the protocol. 1 = status, 2 = login, 3 = game
+	UInt32 m_State;
+
+	/// Buffer for the received data
+	cByteBuffer m_ReceivedData;
+	
+	/// Buffer for composing the outgoing packets, through cPacketizer
+	cByteBuffer m_OutPacketBuffer;
+	
+	/// Buffer for composing packet length (so that each cPacketizer instance doesn't allocate a new cPacketBuffer)
+	cByteBuffer m_OutPacketLenBuffer;
+	
+	bool m_IsEncrypted;
+	CryptoPP::CFB_Mode<CryptoPP::AES>::Decryption m_Decryptor;
+	CryptoPP::CFB_Mode<CryptoPP::AES>::Encryption m_Encryptor;
+	
+	
+	/// Adds the received (unencrypted) data to m_ReceivedData, parses complete packets
+	void AddReceivedData(const char * a_Data, int a_Size);
+	
+	/// Reads and handles the packet. The packet length and type have already been read.
+	void HandlePacket(UInt32 a_PacketType, UInt32 a_RemainingBytes);
+	
+	// Packet handlers while in the Status state (m_State == 1):
+	void HandlePacketStatusPing   (UInt32 a_RemainingBytes);
+	void HandlePacketStatusRequest(UInt32 a_RemainingBytes);
+	
+	// Packet handlers while in the Login state (m_State == 2):
+	void HandlePacketLoginEncryptionResponse(UInt32 a_RemainingBytes);
+	void HandlePacketLoginStart             (UInt32 a_RemainingBytes);
+	
+	// Packet handlers while in the Game state (m_State == 3):
+	void HandlePacketAnimation              (UInt32 a_RemainingBytes);
+	void HandlePacketBlockDig               (UInt32 a_RemainingBytes);
+	void HandlePacketBlockPlace             (UInt32 a_RemainingBytes);
+	void HandlePacketChatMessage            (UInt32 a_RemainingBytes);
+	void HandlePacketClientSettings         (UInt32 a_RemainingBytes);
+	void HandlePacketClientStatus           (UInt32 a_RemainingBytes);
+	void HandlePacketCreativeInventoryAction(UInt32 a_RemainingBytes);
+	void HandlePacketEntityAction           (UInt32 a_RemainingBytes);
+	void HandlePacketKeepAlive              (UInt32 a_RemainingBytes);
+	void HandlePacketPlayer                 (UInt32 a_RemainingBytes);
+	void HandlePacketPlayerAbilities        (UInt32 a_RemainingBytes);
+	void HandlePacketPlayerLook             (UInt32 a_RemainingBytes);
+	void HandlePacketPlayerPos              (UInt32 a_RemainingBytes);
+	void HandlePacketPlayerPosLook          (UInt32 a_RemainingBytes);
+	void HandlePacketPluginMessage          (UInt32 a_RemainingBytes);
+	void HandlePacketSlotSelect             (UInt32 a_RemainingBytes);
+	void HandlePacketSteerVehicle           (UInt32 a_RemainingBytes);
+	void HandlePacketTabComplete            (UInt32 a_RemainingBytes);
+	void HandlePacketUpdateSign             (UInt32 a_RemainingBytes);
+	void HandlePacketUseEntity              (UInt32 a_RemainingBytes);
+	void HandlePacketWindowClick            (UInt32 a_RemainingBytes);
+	void HandlePacketWindowClose            (UInt32 a_RemainingBytes);
+	
+	
+	/// Writes an entire packet into the output stream. a_Packet is expected to start with the packet type; data length is prepended here.
+	void WritePacket(cByteBuffer & a_Packet);
+
+	/// Sends the data to the client, encrypting them if needed.
+	virtual void SendData(const char * a_Data, int a_Size) override;
+
+	void SendCompass(const cWorld & a_World);
+	
+	/// Reads an item out of the received data, sets a_Item to the values read. Returns false if not enough received data
+	bool ReadItem(cItem & a_Item);
+	
+	/// Parses item metadata as read by ReadItem(), into the item enchantments.
+	void ParseItemMetadata(cItem & a_Item, const AString & a_Metadata);
+} ;
+
+
+
+

src/Protocol/ProtocolRecognizer.cpp

@@ -0,0 +1,905 @@
+
+// ProtocolRecognizer.cpp
+
+// Implements the cProtocolRecognizer class representing the meta-protocol that recognizes possibly multiple 
+// protocol versions and redirects everything to them
+
+#include "Globals.h"
+
+#include "ProtocolRecognizer.h"
+#include "Protocol125.h"
+#include "Protocol132.h"
+#include "Protocol14x.h"
+#include "Protocol15x.h"
+#include "Protocol16x.h"
+#include "Protocol17x.h"
+#include "../ClientHandle.h"
+#include "../Root.h"
+#include "../Server.h"
+#include "../World.h"
+#include "../ChatColor.h"
+
+
+
+
+
+cProtocolRecognizer::cProtocolRecognizer(cClientHandle * a_Client) :
+	super(a_Client),
+	m_Protocol(NULL),
+	m_Buffer(512)
+{
+}
+
+
+
+
+
+cProtocolRecognizer::~cProtocolRecognizer()
+{
+	delete m_Protocol;
+}
+
+
+
+
+
+AString cProtocolRecognizer::GetVersionTextFromInt(int a_ProtocolVersion)
+{
+	switch (a_ProtocolVersion)
+	{
+		case PROTO_VERSION_1_2_5: return "1.2.5";
+		case PROTO_VERSION_1_3_2: return "1.3.2";
+		case PROTO_VERSION_1_4_2: return "1.4.2";
+		case PROTO_VERSION_1_4_4: return "1.4.4";
+		case PROTO_VERSION_1_4_6: return "1.4.6";
+		case PROTO_VERSION_1_5_0: return "1.5";
+		case PROTO_VERSION_1_5_2: return "1.5.2";
+		case PROTO_VERSION_1_6_1: return "1.6.1";
+		case PROTO_VERSION_1_6_2: return "1.6.2";
+		case PROTO_VERSION_1_6_3: return "1.6.3";
+		case PROTO_VERSION_1_6_4: return "1.6.4";
+		case PROTO_VERSION_1_7_2: return "1.7.2";
+	}
+	ASSERT(!"Unknown protocol version");
+	return Printf("Unknown protocol (%d)", a_ProtocolVersion);
+}
+
+
+
+
+
+void cProtocolRecognizer::DataReceived(const char * a_Data, int a_Size)
+{
+	if (m_Protocol == NULL)
+	{
+		if (!m_Buffer.Write(a_Data, a_Size))
+		{
+			m_Client->Kick("Unsupported protocol version");
+			return;
+		}
+		
+		if (!TryRecognizeProtocol())
+		{
+			return;
+		}
+
+		// The protocol has just been recognized, dump the whole m_Buffer contents into it for parsing:
+		AString Dump;
+		m_Buffer.ResetRead();
+		m_Buffer.ReadAll(Dump);
+		m_Protocol->DataReceived(Dump.data(), Dump.size());
+	}
+	else
+	{
+		m_Protocol->DataReceived(a_Data, a_Size);
+	}
+}
+
+
+
+
+
+void cProtocolRecognizer::SendAttachEntity(const cEntity & a_Entity, const cEntity * a_Vehicle)
+{
+	ASSERT(m_Protocol != NULL);
+	m_Protocol->SendAttachEntity(a_Entity, a_Vehicle);
+}
+
+
+
+
+
+void cProtocolRecognizer::SendBlockAction(int a_BlockX, int a_BlockY, int a_BlockZ, char a_Byte1, char a_Byte2, BLOCKTYPE a_BlockType)
+{
+	ASSERT(m_Protocol != NULL);
+	m_Protocol->SendBlockAction(a_BlockX, a_BlockY, a_BlockZ, a_Byte1, a_Byte2, a_BlockType);
+}
+
+
+
+
+
+void cProtocolRecognizer::SendBlockBreakAnim(int a_entityID, int a_BlockX, int a_BlockY, int a_BlockZ, char stage)
+{
+	ASSERT(m_Protocol != NULL);
+	m_Protocol->SendBlockBreakAnim(a_entityID, a_BlockX, a_BlockY, a_BlockZ, stage);
+}
+
+
+
+
+
+void cProtocolRecognizer::SendBlockChange(int a_BlockX, int a_BlockY, int a_BlockZ, BLOCKTYPE a_BlockType, NIBBLETYPE a_BlockMeta)
+{
+	ASSERT(m_Protocol != NULL);
+	m_Protocol->SendBlockChange(a_BlockX, a_BlockY, a_BlockZ, a_BlockType, a_BlockMeta);
+}
+
+
+
+
+
+void cProtocolRecognizer::SendBlockChanges(int a_ChunkX, int a_ChunkZ, const sSetBlockVector & a_Changes)
+{
+	ASSERT(m_Protocol != NULL);
+	m_Protocol->SendBlockChanges(a_ChunkX, a_ChunkZ, a_Changes);
+}
+
+
+
+
+
+void cProtocolRecognizer::SendChat(const AString & a_Message)
+{
+	ASSERT(m_Protocol != NULL);
+	m_Protocol->SendChat(a_Message);
+}
+
+
+
+
+
+void cProtocolRecognizer::SendChunkData(int a_ChunkX, int a_ChunkZ, cChunkDataSerializer & a_Serializer)
+{
+	ASSERT(m_Protocol != NULL);
+	m_Protocol->SendChunkData(a_ChunkX, a_ChunkZ, a_Serializer);
+}
+
+
+
+
+
+void cProtocolRecognizer::SendCollectPickup(const cPickup & a_Pickup, const cPlayer & a_Player)
+{
+	ASSERT(m_Protocol != NULL);
+	m_Protocol->SendCollectPickup(a_Pickup, a_Player);
+}
+
+
+
+
+
+void cProtocolRecognizer::SendDestroyEntity(const cEntity & a_Entity)
+{
+	ASSERT(m_Protocol != NULL);
+	m_Protocol->SendDestroyEntity(a_Entity);
+}
+
+
+
+
+
+void cProtocolRecognizer::SendDisconnect(const AString & a_Reason)
+{
+	if (m_Protocol != NULL)
+	{
+		m_Protocol->SendDisconnect(a_Reason);
+	}
+	else
+	{
+		// This is used when the client sends a server-ping, respond with the default packet:
+		WriteByte  ((char)0xff);  // PACKET_DISCONNECT
+		WriteString(a_Reason);
+	}
+}
+
+
+
+
+void cProtocolRecognizer::SendEditSign(int a_BlockX, int a_BlockY, int a_BlockZ)
+{
+	ASSERT(m_Protocol != NULL);
+	m_Protocol->SendEditSign(a_BlockX, a_BlockY, a_BlockZ);
+}
+
+
+
+
+
+void cProtocolRecognizer::SendEntityEquipment(const cEntity & a_Entity, short a_SlotNum, const cItem & a_Item)
+{
+	ASSERT(m_Protocol != NULL);
+	m_Protocol->SendEntityEquipment(a_Entity, a_SlotNum, a_Item);
+}
+
+
+
+
+
+void cProtocolRecognizer::SendEntityHeadLook(const cEntity & a_Entity)
+{
+	ASSERT(m_Protocol != NULL);
+	m_Protocol->SendEntityHeadLook(a_Entity);
+}
+
+
+
+
+
+void cProtocolRecognizer::SendEntityLook(const cEntity & a_Entity)
+{
+	ASSERT(m_Protocol != NULL);
+	m_Protocol->SendEntityLook(a_Entity);
+}
+
+
+
+
+
+void cProtocolRecognizer::SendEntityMetadata(const cEntity & a_Entity)
+{
+	ASSERT(m_Protocol != NULL);
+	m_Protocol->SendEntityMetadata(a_Entity);
+}
+
+
+
+
+
+void cProtocolRecognizer::SendEntityProperties(const cEntity & a_Entity)
+{
+	ASSERT(m_Protocol != NULL);
+	m_Protocol->SendEntityProperties(a_Entity);
+}
+
+
+
+
+
+void cProtocolRecognizer::SendEntityRelMove(const cEntity & a_Entity, char a_RelX, char a_RelY, char a_RelZ)
+{
+	ASSERT(m_Protocol != NULL);
+	m_Protocol->SendEntityRelMove(a_Entity, a_RelX, a_RelY, a_RelZ);
+}
+
+
+
+
+
+void cProtocolRecognizer::SendEntityRelMoveLook(const cEntity & a_Entity, char a_RelX, char a_RelY, char a_RelZ)
+{
+	ASSERT(m_Protocol != NULL);
+	m_Protocol->SendEntityRelMoveLook(a_Entity, a_RelX, a_RelY, a_RelZ);
+}
+
+
+
+
+
+void cProtocolRecognizer::SendEntityStatus(const cEntity & a_Entity, char a_Status)
+{
+	ASSERT(m_Protocol != NULL);
+	m_Protocol->SendEntityStatus(a_Entity, a_Status);
+}
+
+
+
+
+
+void cProtocolRecognizer::SendEntityVelocity(const cEntity & a_Entity)
+{
+	ASSERT(m_Protocol != NULL);
+	m_Protocol->SendEntityVelocity(a_Entity);
+}
+
+
+
+
+
+void cProtocolRecognizer::SendExplosion(double a_BlockX, double a_BlockY, double a_BlockZ, float a_Radius, const cVector3iArray & a_BlocksAffected, const Vector3d & a_PlayerMotion)
+{
+	ASSERT(m_Protocol != NULL);
+	m_Protocol->SendExplosion(a_BlockX,a_BlockY,a_BlockZ,a_Radius, a_BlocksAffected, a_PlayerMotion);
+}
+
+
+
+
+
+void cProtocolRecognizer::SendGameMode(eGameMode a_GameMode)
+{
+	ASSERT(m_Protocol != NULL);
+	m_Protocol->SendGameMode(a_GameMode);
+}
+
+
+
+
+
+void cProtocolRecognizer::SendHealth(void)
+{
+	ASSERT(m_Protocol != NULL);
+	m_Protocol->SendHealth();
+}
+
+
+
+
+
+void cProtocolRecognizer::SendWindowProperty(const cWindow & a_Window, short a_Property, short a_Value)
+{
+	ASSERT(m_Protocol != NULL);
+	m_Protocol->SendWindowProperty(a_Window, a_Property, a_Value);
+}
+
+
+
+
+
+void cProtocolRecognizer::SendInventorySlot(char a_WindowID, short a_SlotNum, const cItem & a_Item)
+{
+	ASSERT(m_Protocol != NULL);
+	m_Protocol->SendInventorySlot(a_WindowID, a_SlotNum, a_Item);
+}
+
+
+
+
+
+void cProtocolRecognizer::SendKeepAlive(int a_PingID)
+{
+	ASSERT(m_Protocol != NULL);
+	m_Protocol->SendKeepAlive(a_PingID);
+}
+
+
+
+
+
+void cProtocolRecognizer::SendLogin(const cPlayer & a_Player, const cWorld & a_World)
+{
+	ASSERT(m_Protocol != NULL);
+	m_Protocol->SendLogin(a_Player, a_World);
+}
+
+
+
+
+
+void cProtocolRecognizer::SendPickupSpawn(const cPickup & a_Pickup)
+{
+	ASSERT(m_Protocol != NULL);
+	m_Protocol->SendPickupSpawn(a_Pickup);
+}
+
+
+
+
+
+void cProtocolRecognizer::SendPlayerAbilities(void)
+{
+	ASSERT(m_Protocol != NULL);
+	m_Protocol->SendPlayerAbilities();
+}
+
+
+
+
+
+void cProtocolRecognizer::SendPlayerAnimation(const cPlayer & a_Player, char a_Animation)
+{
+	ASSERT(m_Protocol != NULL);
+	m_Protocol->SendPlayerAnimation(a_Player, a_Animation);
+}
+
+
+
+
+
+void cProtocolRecognizer::SendPlayerListItem(const cPlayer & a_Player, bool a_IsOnline)
+{
+	ASSERT(m_Protocol != NULL);
+	m_Protocol->SendPlayerListItem(a_Player, a_IsOnline);
+}
+
+
+
+
+
+void cProtocolRecognizer::SendPlayerMaxSpeed(void)
+{
+	ASSERT(m_Protocol != NULL);
+	m_Protocol->SendPlayerMaxSpeed();
+}
+
+
+
+
+
+void cProtocolRecognizer::SendPlayerMoveLook(void)
+{
+	ASSERT(m_Protocol != NULL);
+	m_Protocol->SendPlayerMoveLook();
+}
+
+
+
+
+
+void cProtocolRecognizer::SendPlayerPosition(void)
+{
+	ASSERT(m_Protocol != NULL);
+	m_Protocol->SendPlayerPosition();
+}
+
+
+
+
+
+void cProtocolRecognizer::SendPlayerSpawn(const cPlayer & a_Player)
+{
+	ASSERT(m_Protocol != NULL);
+	m_Protocol->SendPlayerSpawn(a_Player);
+}
+
+
+
+
+
+void cProtocolRecognizer::SendRespawn(void)
+{
+	ASSERT(m_Protocol != NULL);
+	m_Protocol->SendRespawn();
+}
+
+
+
+
+
+void cProtocolRecognizer::SendSoundEffect(const AString & a_SoundName, int a_SrcX, int a_SrcY, int a_SrcZ, float a_Volume, float a_Pitch)
+{
+	ASSERT(m_Protocol != NULL);
+	m_Protocol->SendSoundEffect(a_SoundName, a_SrcX, a_SrcY, a_SrcZ, a_Volume, a_Pitch);
+}
+
+
+
+
+
+void cProtocolRecognizer::SendSoundParticleEffect(int a_EffectID, int a_SrcX, int a_SrcY, int a_SrcZ, int a_Data)
+{
+	ASSERT(m_Protocol != NULL);
+	m_Protocol->SendSoundParticleEffect(a_EffectID, a_SrcX, a_SrcY, a_SrcZ, a_Data);
+}
+
+
+
+
+
+void cProtocolRecognizer::SendSpawnFallingBlock(const cFallingBlock & a_FallingBlock)
+{
+	ASSERT(m_Protocol != NULL);
+	m_Protocol->SendSpawnFallingBlock(a_FallingBlock);
+}
+
+
+
+
+
+void cProtocolRecognizer::SendSpawnMob(const cMonster & a_Mob)
+{
+	ASSERT(m_Protocol != NULL);
+	m_Protocol->SendSpawnMob(a_Mob);
+}
+
+
+
+
+
+void cProtocolRecognizer::SendSpawnObject(const cEntity & a_Entity, char a_ObjectType, int a_ObjectData, Byte a_Yaw, Byte a_Pitch)
+{
+	ASSERT(m_Protocol != NULL);
+	m_Protocol->SendSpawnObject(a_Entity, a_ObjectType, a_ObjectData, a_Yaw, a_Pitch);
+}
+
+
+
+
+
+void cProtocolRecognizer::SendSpawnVehicle(const cEntity & a_Vehicle, char a_VehicleType, char a_VehicleSubType)
+{
+	ASSERT(m_Protocol != NULL);
+	m_Protocol->SendSpawnVehicle(a_Vehicle, a_VehicleType, a_VehicleSubType);
+}
+
+
+
+
+
+void cProtocolRecognizer::SendTabCompletionResults(const AStringVector & a_Results)
+{
+	ASSERT(m_Protocol != NULL);
+	m_Protocol->SendTabCompletionResults(a_Results);
+}
+
+
+
+
+
+void cProtocolRecognizer::SendTeleportEntity(const cEntity & a_Entity)
+{
+	ASSERT(m_Protocol != NULL);
+	m_Protocol->SendTeleportEntity(a_Entity);
+}
+
+
+
+
+
+void cProtocolRecognizer::SendThunderbolt(int a_BlockX, int a_BlockY, int a_BlockZ)
+{
+	ASSERT(m_Protocol != NULL);
+	m_Protocol->SendThunderbolt(a_BlockX, a_BlockY, a_BlockZ);
+}
+
+
+
+
+
+void cProtocolRecognizer::SendTimeUpdate(Int64 a_WorldAge, Int64 a_TimeOfDay)
+{
+	ASSERT(m_Protocol != NULL);
+	m_Protocol->SendTimeUpdate(a_WorldAge, a_TimeOfDay);
+}
+
+
+
+
+
+void cProtocolRecognizer::SendUnloadChunk(int a_ChunkX, int a_ChunkZ)
+{
+	ASSERT(m_Protocol != NULL);
+	m_Protocol->SendUnloadChunk(a_ChunkX, a_ChunkZ);
+}
+
+
+
+
+
+void cProtocolRecognizer::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_Protocol != NULL);
+	m_Protocol->SendUpdateSign(a_BlockX, a_BlockY, a_BlockZ, a_Line1, a_Line2, a_Line3, a_Line4);
+}
+
+
+
+
+
+void cProtocolRecognizer::SendUseBed(const cEntity & a_Entity, int a_BlockX, int a_BlockY, int a_BlockZ )
+{
+	ASSERT(m_Protocol != NULL);
+	m_Protocol->SendUseBed(a_Entity, a_BlockX, a_BlockY, a_BlockZ);
+}
+
+
+
+
+
+void cProtocolRecognizer::SendWeather(eWeather a_Weather)
+{
+	ASSERT(m_Protocol != NULL);
+	m_Protocol->SendWeather(a_Weather);
+}
+
+
+
+
+
+void cProtocolRecognizer::SendWholeInventory(const cWindow & a_Window)
+{
+	ASSERT(m_Protocol != NULL);
+	m_Protocol->SendWholeInventory(a_Window);
+}
+
+
+
+
+
+void cProtocolRecognizer::SendWindowClose(const cWindow & a_Window)
+{
+	ASSERT(m_Protocol != NULL);
+	m_Protocol->SendWindowClose(a_Window);
+}
+
+
+
+
+
+void cProtocolRecognizer::SendWindowOpen(const cWindow & a_Window)
+{
+	ASSERT(m_Protocol != NULL);
+	m_Protocol->SendWindowOpen(a_Window);
+}
+
+
+
+
+
+AString cProtocolRecognizer::GetAuthServerID(void)
+{
+	ASSERT(m_Protocol != NULL);
+	return m_Protocol->GetAuthServerID();
+}
+
+
+
+
+
+void cProtocolRecognizer::SendData(const char * a_Data, int a_Size)
+{
+	// This is used only when handling the server ping
+	m_Client->SendData(a_Data, a_Size);
+}
+
+
+
+
+
+bool cProtocolRecognizer::TryRecognizeProtocol(void)
+{
+	// NOTE: If a new protocol is added or an old one is removed, adjust MCS_CLIENT_VERSIONS and 
+	// MCS_PROTOCOL_VERSIONS macros in the header file, as well as PROTO_VERSION_LATEST macro
+	
+	// The first packet should be a Handshake, 0x02:
+	unsigned char PacketType;
+	if (!m_Buffer.ReadByte(PacketType))
+	{
+		return false;
+	}
+	switch (PacketType)
+	{
+		case 0x02: return TryRecognizeLengthlessProtocol();  // Handshake, continue recognizing
+		case 0xfe:
+		{
+			// This may be either a packet length or the length-less Ping packet
+			Byte NextByte;
+			if (!m_Buffer.ReadByte(NextByte))
+			{
+				// Not enough data for either protocol
+				// This could actually happen with the 1.2 / 1.3 client, but their support is fading out anyway
+				return false;
+			}
+			if (NextByte != 0x01)
+			{
+				// This is definitely NOT a length-less Ping packet, handle as lengthed protocol:
+				break;
+			}
+			if (!m_Buffer.ReadByte(NextByte))
+			{
+				// There is no more data. Although this *could* mean TCP fragmentation, it is highly unlikely
+				// and rather this is a 1.4 client sending a regular Ping packet (without the following Plugin message)
+				SendLengthlessServerPing();
+				return false;
+			}
+			if (NextByte == 0xfa)
+			{
+				// Definitely a length-less Ping followed by a Plugin message
+				SendLengthlessServerPing();
+				return false;
+			}
+			// Definitely a lengthed Initial handshake, handle below:
+			break;
+		}
+	}  // switch (PacketType)
+
+	// This must be a lengthed protocol, try if it has the entire initial handshake packet:
+	m_Buffer.ResetRead();
+	UInt32 PacketLen;
+	UInt32 ReadSoFar = m_Buffer.GetReadableSpace();
+	if (!m_Buffer.ReadVarInt(PacketLen))
+	{
+		// Not enough bytes for the packet length, keep waiting
+		return false;
+	}
+	ReadSoFar -= m_Buffer.GetReadableSpace();
+	if (!m_Buffer.CanReadBytes(PacketLen))
+	{
+		// Not enough bytes for the packet, keep waiting
+		return false;
+	}
+	return TryRecognizeLengthedProtocol(PacketLen - ReadSoFar);
+}
+
+
+
+
+
+bool cProtocolRecognizer::TryRecognizeLengthlessProtocol(void)
+{
+	// The comm started with 0x02, which is a Handshake packet in the length-less protocol family
+	// 1.3.2 starts with 0x02 0x39 <name-length-short>
+	// 1.2.5 starts with 0x02 <name-length-short> and name is expected to less than 0x3900 long :)
+	char ch;
+	if (!m_Buffer.ReadChar(ch))
+	{
+		return false;
+	}
+	switch (ch)
+	{
+	 case PROTO_VERSION_1_3_2:
+		{
+			m_Protocol = new cProtocol132(m_Client);
+			return true;
+		}
+		case PROTO_VERSION_1_4_2:
+		case PROTO_VERSION_1_4_4:
+		{
+			m_Protocol = new cProtocol142(m_Client);
+			return true;
+		}
+		case PROTO_VERSION_1_4_6:
+		{
+			m_Protocol = new cProtocol146(m_Client);
+			return true;
+		}
+		case PROTO_VERSION_1_5_0:
+		case PROTO_VERSION_1_5_2:
+		{
+			m_Protocol = new cProtocol150(m_Client);
+			return true;
+		}
+		case PROTO_VERSION_1_6_1:
+		{
+			m_Protocol = new cProtocol161(m_Client);
+			return true;
+		}
+		case PROTO_VERSION_1_6_2:
+		case PROTO_VERSION_1_6_3:
+		case PROTO_VERSION_1_6_4:
+		{
+			m_Protocol = new cProtocol162(m_Client);
+			return true;
+		}
+	}
+	m_Protocol = new cProtocol125(m_Client);
+	return true;
+}
+
+
+
+
+
+bool cProtocolRecognizer::TryRecognizeLengthedProtocol(UInt32 a_PacketLengthRemaining)
+{
+	UInt32 PacketType;
+	UInt32 NumBytesRead = m_Buffer.GetReadableSpace();
+	if (!m_Buffer.ReadVarInt(PacketType))
+	{
+		return false;
+	}
+	if (PacketType != 0x00)
+	{
+		// Not an initial handshake packet, we don't know how to talk to them
+		LOGINFO("Client \"%s\" uses an unsupported protocol (lengthed, initial packet %u)",
+			m_Client->GetIPString().c_str(), PacketType
+		);
+		m_Client->Kick("Unsupported protocol version");
+		return false;
+	}
+	UInt32 ProtocolVersion;
+	if (!m_Buffer.ReadVarInt(ProtocolVersion))
+	{
+		return false;
+	}
+	NumBytesRead -= m_Buffer.GetReadableSpace();
+	switch (ProtocolVersion)
+	{
+		case PROTO_VERSION_1_7_2:
+		{
+			AString ServerAddress;
+			short ServerPort;
+			UInt32 NextState;
+			m_Buffer.ReadVarUTF8String(ServerAddress);
+			m_Buffer.ReadBEShort(ServerPort);
+			m_Buffer.ReadVarInt(NextState);
+			m_Buffer.CommitRead();
+			m_Protocol = new cProtocol172(m_Client, ServerAddress, ServerPort, NextState);
+			return true;
+		}
+	}
+	LOGINFO("Client \"%s\" uses an unsupported protocol (lengthed, version %u)",
+		m_Client->GetIPString().c_str(), ProtocolVersion
+	);
+	m_Client->Kick("Unsupported protocol version");
+	return false;
+}
+
+
+
+
+
+void cProtocolRecognizer::SendLengthlessServerPing(void)
+{
+	AString Reply;
+	switch (cRoot::Get()->GetPrimaryServerVersion())
+	{
+		case PROTO_VERSION_1_2_5:
+		case PROTO_VERSION_1_3_2:
+		{
+			// http://wiki.vg/wiki/index.php?title=Protocol&oldid=3099#Server_List_Ping_.280xFE.29
+			Printf(Reply, "%s%s%i%s%i", 
+				cRoot::Get()->GetServer()->GetDescription().c_str(),
+				cChatColor::Delimiter.c_str(),
+				cRoot::Get()->GetServer()->GetNumPlayers(),
+				cChatColor::Delimiter.c_str(),
+				cRoot::Get()->GetServer()->GetMaxPlayers()
+			);
+			break;
+		}
+		
+		case PROTO_VERSION_1_4_2:
+		case PROTO_VERSION_1_4_4:
+		case PROTO_VERSION_1_4_6:
+		case PROTO_VERSION_1_5_0:
+		case PROTO_VERSION_1_5_2:
+		case PROTO_VERSION_1_6_1:
+		case PROTO_VERSION_1_6_2:
+		case PROTO_VERSION_1_6_3:
+		case PROTO_VERSION_1_6_4:
+		{
+			// The server list ping now has 1 more byte of "magic". Mojang just loves to complicate stuff.
+			// http://wiki.vg/wiki/index.php?title=Protocol&oldid=3101#Server_List_Ping_.280xFE.29
+			// _X 2012_10_31: I know that this needn't eat the byte, since it still may be in transit.
+			//    Who cares? We're disconnecting anyway.
+			m_Buffer.ResetRead();
+			if (m_Buffer.CanReadBytes(2))
+			{
+				byte val;
+				m_Buffer.ReadByte(val);  // Packet type - Serverlist ping
+				m_Buffer.ReadByte(val);  // 0x01 magic value
+				ASSERT(val == 0x01);
+			}
+			
+			// http://wiki.vg/wiki/index.php?title=Server_List_Ping&oldid=3100
+			AString NumPlayers;
+			Printf(NumPlayers, "%d", cRoot::Get()->GetServer()->GetNumPlayers());
+			AString MaxPlayers;
+			Printf(MaxPlayers, "%d", cRoot::Get()->GetServer()->GetMaxPlayers());
+			
+			AString ProtocolVersionNum;
+			Printf(ProtocolVersionNum, "%d", cRoot::Get()->GetPrimaryServerVersion());
+			AString ProtocolVersionTxt(GetVersionTextFromInt(cRoot::Get()->GetPrimaryServerVersion()));
+
+			// Cannot use Printf() because of in-string NUL bytes.
+			Reply = cChatColor::Delimiter;
+			Reply.append("1");
+			Reply.push_back(0);
+			Reply.append(ProtocolVersionNum);
+			Reply.push_back(0);
+			Reply.append(ProtocolVersionTxt);
+			Reply.push_back(0);
+			Reply.append(cRoot::Get()->GetServer()->GetDescription());
+			Reply.push_back(0);
+			Reply.append(NumPlayers);
+			Reply.push_back(0);
+			Reply.append(MaxPlayers);
+			break;
+		}
+	}  // switch (m_PrimaryServerVersion)
+	m_Client->Kick(Reply);
+}
+
+
+
+

src/Protocol/ProtocolRecognizer.h

@@ -0,0 +1,152 @@
+
+// ProtocolRecognizer.h
+
+// Interfaces to the cProtocolRecognizer class representing the meta-protocol that recognizes possibly multiple 
+// protocol versions and redirects everything to them
+
+
+
+
+
+#pragma once
+
+#include "Protocol.h"
+#include "../ByteBuffer.h"
+
+
+
+
+
+// Adjust these if a new protocol is added or an old one is removed:
+#define MCS_CLIENT_VERSIONS "1.2.4, 1.2.5, 1.3.1, 1.3.2, 1.4.2, 1.4.4, 1.4.5, 1.4.6, 1.4.7, 1.5, 1.5.1, 1.5.2, 1.6.1, 1.6.2, 1.6.3, 1.6.4, 1.7.2"
+#define MCS_PROTOCOL_VERSIONS "29, 39, 47, 49, 51, 60, 61, 73, 74, 77, 78, 4"
+
+
+
+
+
+class cProtocolRecognizer :
+	public cProtocol
+{
+	typedef cProtocol super;
+	
+public:
+	enum
+	{
+		PROTO_VERSION_1_2_5 = 29,
+		PROTO_VERSION_1_3_2 = 39,
+		PROTO_VERSION_1_4_2 = 47,
+		PROTO_VERSION_1_4_4 = 49,
+		PROTO_VERSION_1_4_6 = 51,
+		PROTO_VERSION_1_5_0 = 60,
+		PROTO_VERSION_1_5_2 = 61,
+		PROTO_VERSION_1_6_1 = 73,
+		PROTO_VERSION_1_6_2 = 74,
+		PROTO_VERSION_1_6_3 = 77,
+		PROTO_VERSION_1_6_4 = 78,
+		
+		PROTO_VERSION_NEXT,
+		PROTO_VERSION_LATEST = PROTO_VERSION_NEXT - 1,  ///< Automatically assigned to the last protocol version, this serves as the default for PrimaryServerVersion
+
+		// These will be kept "under" the next / latest, because the next and latest are only needed for previous protocols
+		PROTO_VERSION_1_7_2 = 4,
+	} ;
+
+	cProtocolRecognizer(cClientHandle * a_Client);
+	virtual ~cProtocolRecognizer();
+	
+	/// Translates protocol version number into protocol version text: 49 -> "1.4.4"
+	static AString GetVersionTextFromInt(int a_ProtocolVersion);
+	
+	/// Called when client sends some data:
+	virtual void DataReceived(const char * a_Data, int a_Size) override;
+	
+	/// Sending stuff to clients (alphabetically sorted):
+	virtual void SendAttachEntity        (const cEntity & a_Entity, const cEntity * a_Vehicle) override;
+	virtual void SendBlockAction         (int a_BlockX, int a_BlockY, int a_BlockZ, char a_Byte1, char a_Byte2, BLOCKTYPE a_BlockType) override;
+	virtual void SendBlockBreakAnim      (int a_EntityID, int a_BlockX, int a_BlockY, int a_BlockZ, char a_Stage) override;
+	virtual void SendBlockChange         (int a_BlockX, int a_BlockY, int a_BlockZ, BLOCKTYPE a_BlockType, NIBBLETYPE a_BlockMeta) override;
+	virtual void SendBlockChanges        (int a_ChunkX, int a_ChunkZ, const sSetBlockVector & a_Changes) override;
+	virtual void SendChat                (const AString & a_Message) override;
+	virtual void SendChunkData           (int a_ChunkX, int a_ChunkZ, cChunkDataSerializer & a_Serializer) override;
+	virtual void SendCollectPickup       (const cPickup & a_Pickup, const cPlayer & a_Player) override;
+	virtual void SendDestroyEntity       (const cEntity & a_Entity) override;
+	virtual void SendDisconnect          (const AString & a_Reason) override;
+	virtual void SendEditSign            (int a_BlockX, int a_BlockY, int a_BlockZ) override;  ///< Request the client to open up the sign editor for the sign (1.6+)
+	virtual void SendEntityEquipment     (const cEntity & a_Entity, short a_SlotNum, const cItem & a_Item) override;
+	virtual void SendEntityHeadLook      (const cEntity & a_Entity) override;
+	virtual void SendEntityLook          (const cEntity & a_Entity) override;
+	virtual void SendEntityMetadata      (const cEntity & a_Entity) override;
+	virtual void SendEntityProperties    (const cEntity & a_Entity) override;
+	virtual void SendEntityRelMove       (const cEntity & a_Entity, char a_RelX, char a_RelY, char a_RelZ) override;
+	virtual void SendEntityRelMoveLook   (const cEntity & a_Entity, char a_RelX, char a_RelY, char a_RelZ) override;
+	virtual void SendEntityStatus        (const cEntity & a_Entity, char a_Status) override;
+	virtual void SendEntityVelocity      (const cEntity & a_Entity) override;
+	virtual void SendExplosion           (double a_BlockX, double a_BlockY, double a_BlockZ, float a_Radius, const cVector3iArray & a_BlocksAffected, const Vector3d & a_PlayerMotion) override;
+	virtual void SendGameMode            (eGameMode a_GameMode) override;
+	virtual void SendHealth              (void) override;
+	virtual void SendInventorySlot       (char a_WindowID, short a_SlotNum, const cItem & a_Item) override;
+	virtual void SendKeepAlive           (int a_PingID) override;
+	virtual void SendLogin               (const cPlayer & a_Player, const cWorld & a_World) override;
+	virtual void SendPickupSpawn         (const cPickup & a_Pickup) override;
+	virtual void SendPlayerAbilities     (void) override;
+	virtual void SendPlayerAnimation     (const cPlayer & a_Player, char a_Animation) override;
+	virtual void SendPlayerListItem      (const cPlayer & a_Player, bool a_IsOnline) override;
+	virtual void SendPlayerMaxSpeed      (void) override;
+	virtual void SendPlayerMoveLook      (void) override;
+	virtual void SendPlayerPosition      (void) override;
+	virtual void SendPlayerSpawn         (const cPlayer & a_Player) override;
+	virtual void SendRespawn             (void) override;
+	virtual void SendSoundEffect         (const AString & a_SoundName, int a_SrcX, int a_SrcY, int a_SrcZ, float a_Volume, float a_Pitch) override;
+	virtual void SendSoundParticleEffect (int a_EffectID, int a_SrcX, int a_SrcY, int a_SrcZ, int a_Data) override;
+	virtual void SendSpawnFallingBlock   (const cFallingBlock & a_FallingBlock) override;
+	virtual void SendSpawnMob            (const cMonster & a_Mob) override;
+	virtual void SendSpawnObject         (const cEntity & a_Entity, char a_ObjectType, int a_ObjectData, Byte a_Yaw, Byte a_Pitch) override;
+	virtual void SendSpawnVehicle        (const cEntity & a_Vehicle, char a_VehicleType, char a_VehicleSubType) override;
+	virtual void SendTabCompletionResults(const AStringVector & a_Results) override;
+	virtual void SendTeleportEntity      (const cEntity & a_Entity) override;
+	virtual void SendThunderbolt         (int a_BlockX, int a_BlockY, int a_BlockZ) override;
+	virtual void SendTimeUpdate          (Int64 a_WorldAge, Int64 a_TimeOfDay) override;
+	virtual void SendUnloadChunk         (int a_ChunkX, int a_ChunkZ) override;
+	virtual void 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) override;
+	virtual void SendUseBed              (const cEntity & a_Entity, int a_BlockX, int a_BlockY, int a_BlockZ ) override;
+	virtual void SendWeather             (eWeather a_Weather) override;
+	virtual void SendWholeInventory      (const cWindow & a_Window) override;
+	virtual void SendWindowClose         (const cWindow & a_Window) override;
+	virtual void SendWindowOpen          (const cWindow & a_Window) override;
+	virtual void SendWindowProperty      (const cWindow & a_Window, short a_Property, short a_Value) override;
+	
+	virtual AString GetAuthServerID(void) override;
+
+	virtual void SendData(const char * a_Data, int a_Size) override;
+
+protected:
+	cProtocol * m_Protocol;  //< The recognized protocol
+	cByteBuffer m_Buffer;    //< Buffer for the incoming data until we recognize the protocol
+	
+	/// Tries to recognize protocol based on m_Buffer contents; returns true if recognized
+	bool TryRecognizeProtocol(void);
+	
+	/** Tries to recognize a protocol in the length-less family, based on m_Buffer; returns true if recognized.
+	Handles protocols before release 1.7, that didn't include packet lengths, and started with a 0x02 handshake packet
+	Note that length-less server ping is handled directly in TryRecognizeProtocol(), this function is called only
+	when the 0x02 Handshake packet has been received
+	*/
+	bool TryRecognizeLengthlessProtocol(void);
+	
+	/** Tries to recognize a protocol in the leghted family (1.7+), based on m_Buffer; returns true if recognized.
+	The packet length and type have already been read, type is 0
+	The number of bytes remaining in the packet is passed as a_PacketLengthRemaining
+	**/
+	bool TryRecognizeLengthedProtocol(UInt32 a_PacketLengthRemaining);
+	
+	/** Called when the recognizer gets a length-less protocol's server ping packet
+	Responds with server stats and destroys the client.
+	*/
+	void SendLengthlessServerPing(void);
+} ;
+
+
+
+
+