16 files changed, 1030 insertions, 250 deletions

diff --git a/src/Protocol/Authenticator.cpp b/src/Protocol/Authenticator.cpp
new file mode 100644
index 000000000..e0fcc0007
--- /dev/null
+++ b/src/Protocol/Authenticator.cpp
@@ -0,0 +1,314 @@
+
+#include "Globals.h"  // NOTE: MSVC stupidness requires this to be the same across all modules
+
+#include "Authenticator.h"
+#include "../OSSupport/BlockingTCPLink.h"
+#include "../Root.h"
+#include "../Server.h"
+#include "../ClientHandle.h"
+
+#include "inifile/iniFile.h"
+#include "json/json.h"
+
+#include "polarssl/config.h"
+#include "polarssl/net.h"
+#include "polarssl/ssl.h"
+#include "polarssl/entropy.h"
+#include "polarssl/ctr_drbg.h"
+#include "polarssl/error.h"
+#include "polarssl/certs.h"
+
+#include <sstream>
+#include <iomanip>
+
+
+
+
+
+#define DEFAULT_AUTH_SERVER "sessionserver.mojang.com"
+#define DEFAULT_AUTH_ADDRESS "/session/minecraft/hasJoined?username=%USERNAME%&serverId=%SERVERID%"
+
+
+
+
+
+cAuthenticator::cAuthenticator(void) :
+	super("cAuthenticator"),
+	m_Server(DEFAULT_AUTH_SERVER),
+	m_Address(DEFAULT_AUTH_ADDRESS),
+	m_ShouldAuthenticate(true)
+{
+}
+
+
+
+
+
+cAuthenticator::~cAuthenticator()
+{
+	Stop();
+}
+
+
+
+
+
+void cAuthenticator::ReadINI(cIniFile & IniFile)
+{
+	m_Server = IniFile.GetValueSet("Authentication", "Server", DEFAULT_AUTH_SERVER);
+	m_Address = IniFile.GetValueSet("Authentication", "Address", DEFAULT_AUTH_ADDRESS);
+	m_ShouldAuthenticate = IniFile.GetValueSetB("Authentication", "Authenticate", true);
+}
+
+
+
+
+
+void cAuthenticator::Authenticate(int a_ClientID, const AString & a_UserName, const AString & a_ServerHash)
+{
+	if (!m_ShouldAuthenticate)
+	{
+		cRoot::Get()->AuthenticateUser(a_ClientID, a_UserName, cClientHandle::GenerateOfflineUUID(a_UserName));
+		return;
+	}
+
+	cCSLock LOCK(m_CS);
+	m_Queue.push_back(cUser(a_ClientID, a_UserName, a_ServerHash));
+	m_QueueNonempty.Set();
+}
+
+
+
+
+
+void cAuthenticator::Start(cIniFile & IniFile)
+{
+	ReadINI(IniFile);
+	m_ShouldTerminate = false;
+	super::Start();
+}
+
+
+
+
+
+void cAuthenticator::Stop(void)
+{
+	m_ShouldTerminate = true;
+	m_QueueNonempty.Set();
+	Wait();
+}
+
+
+
+
+
+void cAuthenticator::Execute(void)
+{
+	for (;;)
+	{
+		cCSLock Lock(m_CS);
+		while (!m_ShouldTerminate && (m_Queue.size() == 0))
+		{
+			cCSUnlock Unlock(Lock);
+			m_QueueNonempty.Wait();
+		}
+		if (m_ShouldTerminate)
+		{
+			return;
+		}
+		ASSERT(!m_Queue.empty());
+
+		cAuthenticator::cUser & User = m_Queue.front();
+		int ClientID = User.m_ClientID;
+		AString UserName = User.m_Name;
+		AString ServerID = User.m_ServerID;
+		m_Queue.pop_front();
+		Lock.Unlock();
+
+		AString NewUserName = UserName;
+		AString UUID;
+		if (AuthWithYggdrasil(NewUserName, ServerID, UUID))
+		{
+			LOGINFO("User %s authenticated with UUID '%s'", NewUserName.c_str(), UUID.c_str());
+			cRoot::Get()->AuthenticateUser(ClientID, NewUserName, UUID);
+		}
+		else
+		{
+			cRoot::Get()->KickUser(ClientID, "Failed to authenticate account!");
+		}
+	}  // for (-ever)
+}
+
+
+
+
+
+bool cAuthenticator::AuthWithYggdrasil(AString & a_UserName, const AString & a_ServerId, AString & a_UUID)
+{
+	LOGD("Trying to auth user %s", a_UserName.c_str());
+	
+	int ret, server_fd = -1;
+	unsigned char buf[1024];
+	const char *pers = "cAuthenticator";
+
+	entropy_context entropy;
+	ctr_drbg_context ctr_drbg;
+	ssl_context ssl;
+	x509_crt cacert;
+
+	/* Initialize the RNG and the session data */
+	memset(&ssl, 0, sizeof(ssl_context));
+	x509_crt_init(&cacert);
+
+	entropy_init(&entropy);
+	if ((ret = ctr_drbg_init(&ctr_drbg, entropy_func, &entropy, (const unsigned char *)pers, strlen(pers))) != 0)
+	{
+		LOGWARNING("cAuthenticator: ctr_drbg_init returned %d", ret);
+		return false;
+	}
+
+	/* Initialize certificates */
+	// TODO: Grab the sessionserver's root CA and any intermediates and hard-code them here, instead of test_ca_list
+	ret = x509_crt_parse(&cacert, (const unsigned char *)test_ca_list, strlen(test_ca_list));
+
+	if (ret < 0)
+	{
+		LOGWARNING("cAuthenticator: x509_crt_parse returned -0x%x", -ret);
+		return false;
+	}
+
+	/* Connect */
+	if ((ret = net_connect(&server_fd, m_Server.c_str(), 443)) != 0)
+	{
+		LOGWARNING("cAuthenticator: Can't connect to %s: %d", m_Server.c_str(), ret);
+		return false;
+	}
+
+	/* Setup */
+	if ((ret = ssl_init(&ssl)) != 0)
+	{
+		LOGWARNING("cAuthenticator: ssl_init returned %d", ret);
+		return false;
+	}
+	ssl_set_endpoint(&ssl, SSL_IS_CLIENT);
+	ssl_set_authmode(&ssl, SSL_VERIFY_OPTIONAL);
+	ssl_set_ca_chain(&ssl, &cacert, NULL, "PolarSSL Server 1");
+	ssl_set_rng(&ssl, ctr_drbg_random, &ctr_drbg);
+	ssl_set_bio(&ssl, net_recv, &server_fd, net_send, &server_fd);
+
+	/* Handshake */
+	while ((ret = ssl_handshake(&ssl)) != 0)
+	{
+		if ((ret != POLARSSL_ERR_NET_WANT_READ) && (ret != POLARSSL_ERR_NET_WANT_WRITE))
+		{
+			LOGWARNING("cAuthenticator: ssl_handshake returned -0x%x", -ret);
+			return false;
+		}
+	}
+
+	/* Write the GET request */
+	AString ActualAddress = m_Address;
+	ReplaceString(ActualAddress, "%USERNAME%", a_UserName);
+	ReplaceString(ActualAddress, "%SERVERID%", a_ServerId);
+
+	AString Request;
+	Request += "GET " + ActualAddress + " HTTP/1.1\r\n";
+	Request += "Host: " + m_Server + "\r\n";
+	Request += "User-Agent: MCServer\r\n";
+	Request += "Connection: close\r\n";
+	Request += "\r\n";
+
+	ret = ssl_write(&ssl, (const unsigned char *)Request.c_str(), Request.size());
+	if (ret <= 0)
+	{
+		LOGWARNING("cAuthenticator: ssl_write returned %d", ret);
+		return false;
+	}
+
+	/* Read the HTTP response */
+	std::string Response;
+	for (;;)
+	{
+		memset(buf, 0, sizeof(buf));
+		ret = ssl_read(&ssl, buf, sizeof(buf));
+
+		if ((ret == POLARSSL_ERR_NET_WANT_READ) || (ret == POLARSSL_ERR_NET_WANT_WRITE))
+		{
+			continue;
+		}
+		if (ret == POLARSSL_ERR_SSL_PEER_CLOSE_NOTIFY)
+		{
+			break;
+		}
+		if (ret < 0)
+		{
+			LOGWARNING("cAuthenticator: ssl_read returned %d", ret);
+			break;
+		}
+		if (ret == 0)
+		{
+			LOGWARNING("cAuthenticator: EOF");
+			break;
+		}
+
+		Response.append((const char *)buf, ret);
+	} 
+
+	ssl_close_notify(&ssl);
+	x509_crt_free(&cacert);
+	net_close(server_fd);
+	ssl_free(&ssl);
+	entropy_free(&entropy);
+	memset(&ssl, 0, sizeof(ssl));
+
+	// Check the HTTP status line:
+	AString prefix("HTTP/1.1 200 OK");
+	AString HexDump;
+	if (Response.compare(0, prefix.size(), prefix))
+	{
+		LOGINFO("User \"%s\" failed to auth, bad http status line received", a_UserName.c_str());
+		LOG("Response: \n%s", CreateHexDump(HexDump, Response.data(), Response.size(), 16).c_str());
+		return false;
+	}
+
+	// Erase the HTTP headers from the response:
+	size_t idxHeadersEnd = Response.find("\r\n\r\n");
+	if (idxHeadersEnd == AString::npos)
+	{
+		LOGINFO("User \"%s\" failed to authenticate, bad http response header received", a_UserName.c_str());
+		LOG("Response: \n%s", CreateHexDump(HexDump, Response.data(), Response.size(), 16).c_str());
+		return false;
+	}
+	Response.erase(0, idxHeadersEnd + 4);
+
+	// Parse the Json response:
+	if (Response.empty())
+	{
+		return false;
+	}
+	Json::Value root;
+	Json::Reader reader;
+	if (!reader.parse(Response, root, false))
+	{
+		LOGWARNING("cAuthenticator: Cannot parse Received Data to json!");
+		return false;
+	}
+	a_UserName = root.get("name", "Unknown").asString();
+	a_UUID = root.get("id", "").asString();
+	
+	// If the UUID doesn't contain the hashes, insert them at the proper places:
+	if (a_UUID.size() == 32)
+	{
+		a_UUID.insert(8, "-");
+		a_UUID.insert(13, "-");
+		a_UUID.insert(18, "-");
+		a_UUID.insert(23, "-");
+	}
+	return true;
+}
+
+
+
+
+
diff --git a/src/Protocol/Authenticator.h b/src/Protocol/Authenticator.h
new file mode 100644
index 000000000..211f51394
--- /dev/null
+++ b/src/Protocol/Authenticator.h
@@ -0,0 +1,93 @@
+
+// cAuthenticator.h
+
+// Interfaces to the cAuthenticator class representing the thread that authenticates users against the official MC server
+// Authentication prevents "hackers" from joining with an arbitrary username (possibly impersonating the server admins)
+// For more info, see http://wiki.vg/Session#Server_operation
+// In MCS, authentication is implemented as a single thread that receives queued auth requests and dispatches them one by one.
+
+
+
+
+
+#pragma once
+#ifndef CAUTHENTICATOR_H_INCLUDED
+#define CAUTHENTICATOR_H_INCLUDED
+
+#include "../OSSupport/IsThread.h"
+
+
+
+
+
+// fwd: "cRoot.h"
+class cRoot;
+
+
+
+
+
+class cAuthenticator :
+	public cIsThread
+{
+	typedef cIsThread super;
+
+public:
+	cAuthenticator(void);
+	~cAuthenticator();
+
+	/** (Re-)read server and address from INI: */
+	void ReadINI(cIniFile & IniFile);
+
+	/** Queues a request for authenticating a user. If the auth fails, the user will be kicked */
+	void Authenticate(int a_ClientID, const AString & a_UserName, const AString & a_ServerHash);
+
+	/** Starts the authenticator thread. The thread may be started and stopped repeatedly */
+	void Start(cIniFile & IniFile);
+
+	/** Stops the authenticator thread. The thread may be started and stopped repeatedly */
+	void Stop(void);
+
+private:
+
+	class cUser
+	{
+	public:
+		int     m_ClientID;
+		AString m_Name;
+		AString m_ServerID;
+
+		cUser(int a_ClientID, const AString & a_Name, const AString & a_ServerID) :
+			m_ClientID(a_ClientID),
+			m_Name(a_Name),
+			m_ServerID(a_ServerID)
+		{
+		}
+	};
+
+	typedef std::deque<cUser> cUserList;
+
+	cCriticalSection m_CS;
+	cUserList        m_Queue;
+	cEvent           m_QueueNonempty;
+
+	AString m_Server;
+	AString m_Address;
+	bool    m_ShouldAuthenticate;
+
+	/** cIsThread override: */
+	virtual void Execute(void) override;
+
+	/** Returns true if the user authenticated okay, false on error; iLevel is the recursion deptht (bails out if too deep) */
+	bool AuthWithYggdrasil(AString & a_UserName, const AString & a_ServerId, AString & a_UUID);
+};
+
+
+
+
+
+#endif  // CAUTHENTICATOR_H_INCLUDED
+
+
+
+
diff --git a/src/Protocol/CMakeLists.txt b/src/Protocol/CMakeLists.txt
index 107b79627..849ec27ca 100644
--- a/src/Protocol/CMakeLists.txt
+++ b/src/Protocol/CMakeLists.txt
@@ -6,6 +6,7 @@ include_directories ("${PROJECT_SOURCE_DIR}/../")
 
 file(GLOB SOURCE
     "*.cpp"
+    "*.h"
 )
 
 add_library(Protocol ${SOURCE})
diff --git a/src/Protocol/ChunkDataSerializer.cpp b/src/Protocol/ChunkDataSerializer.cpp
index 78318a5ee..ebe61631b 100644
--- a/src/Protocol/ChunkDataSerializer.cpp
+++ b/src/Protocol/ChunkDataSerializer.cpp
@@ -105,7 +105,7 @@ void cChunkDataSerializer::Serialize29(AString & a_Data)
 	a_Data.append((const char *)&BitMap1, sizeof(short));
 	a_Data.append((const char *)&BitMap2, sizeof(short));
 	
-	Int32 CompressedSizeBE = htonl(CompressedSize);
+	UInt32 CompressedSizeBE = htonl((UInt32)CompressedSize);
 	a_Data.append((const char *)&CompressedSizeBE, sizeof(CompressedSizeBE));
 	
 	Int32 UnusedInt32 = 0;
@@ -163,7 +163,7 @@ void cChunkDataSerializer::Serialize39(AString & a_Data)
 	a_Data.append((const char *)&BitMap1, sizeof(short));
 	a_Data.append((const char *)&BitMap2, sizeof(short));
 	
-	Int32 CompressedSizeBE = htonl(CompressedSize);
+	UInt32 CompressedSizeBE = htonl((UInt32)CompressedSize);
 	a_Data.append((const char *)&CompressedSizeBE, sizeof(CompressedSizeBE));
 	
 	// Unlike 29, 39 doesn't have the "unused" int
diff --git a/src/Protocol/Protocol.h b/src/Protocol/Protocol.h
index d3383bf0d..2fbeef0fa 100644
--- a/src/Protocol/Protocol.h
+++ b/src/Protocol/Protocol.h
@@ -83,6 +83,7 @@ public:
 	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 SendLoginSuccess        (void) = 0;
 	virtual void SendMapColumn           (int a_ID, int a_X, int a_Y, const Byte * a_Colors, unsigned int a_Length) = 0;
 	virtual void SendMapDecorators       (int a_ID, const cMapDecoratorList & a_Decorators) = 0;
 	virtual void SendMapInfo             (int a_ID, unsigned int a_Scale) = 0;
@@ -132,7 +133,7 @@ protected:
 	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;
+	virtual void SendData(const char * a_Data, size_t a_Size) = 0;
 	
 	/// Called after writing each packet, enables descendants to flush their buffers
 	virtual void Flush(void) {};
@@ -143,10 +144,15 @@ protected:
 		SendData((const char *)&a_Value, 1);
 	}
 	
+	void WriteChar(char a_Value)
+	{
+		SendData(&a_Value, 1);
+	}
+	
 	void WriteShort(short a_Value)
 	{
-		a_Value = htons(a_Value);
-		SendData((const char *)&a_Value, 2);
+		u_short Value = htons((u_short)a_Value);
+		SendData((const char *)&Value, 2);
 	}
 	
 	/*
@@ -159,8 +165,8 @@ protected:
 	
 	void WriteInt(int a_Value)
 	{
-		a_Value = htonl(a_Value);
-		SendData((const char *)&a_Value, 4);
+		u_long Value = htonl((u_long)a_Value);
+		SendData((const char *)&Value, 4);
 	}
 	
 	void WriteUInt(unsigned int a_Value)
@@ -171,19 +177,19 @@ protected:
 	
 	void WriteInt64 (Int64 a_Value)
 	{
-		a_Value = HostToNetwork8(&a_Value);
-		SendData((const char *)&a_Value, 8);
+		UInt64 Value = HostToNetwork8(&a_Value);
+		SendData((const char *)&Value, 8);
 	}
 	
 	void WriteFloat (float a_Value)
 	{
-		unsigned int val = HostToNetwork4(&a_Value);
+		UInt32 val = HostToNetwork4(&a_Value);
 		SendData((const char *)&val, 4);
 	}
 	
 	void WriteDouble(double a_Value)
 	{
-		unsigned long long val = HostToNetwork8(&a_Value);
+		UInt64 val = HostToNetwork8(&a_Value);
 		SendData((const char *)&val, 8);
 	}
 	
@@ -191,7 +197,7 @@ protected:
 	{
 		AString UTF16;
 		UTF8ToRawBEUTF16(a_Value.c_str(), a_Value.length(), UTF16);
-		WriteShort((unsigned short)(UTF16.size() / 2));
+		WriteShort((short)(UTF16.size() / 2));
 		SendData(UTF16.data(), UTF16.size());
 	}
 	
@@ -211,7 +217,7 @@ protected:
 	{
 		// A 32-bit integer can be encoded by at most 5 bytes:
 		unsigned char b[5];
-		int idx = 0;
+		size_t idx = 0;
 		do
 		{
 			b[idx] = (a_Value & 0x7f) | ((a_Value > 0x7f) ? 0x80 : 0x00);
@@ -224,7 +230,7 @@ protected:
 	
 	void WriteVarUTF8String(const AString & a_String)
 	{
-		WriteVarInt(a_String.size());
+		WriteVarInt((UInt32)a_String.size());
 		SendData(a_String.data(), a_String.size());
 	}
 } ;
diff --git a/src/Protocol/Protocol125.cpp b/src/Protocol/Protocol125.cpp
index fe6280218..3282a827f 100644
--- a/src/Protocol/Protocol125.cpp
+++ b/src/Protocol/Protocol125.cpp
@@ -96,6 +96,7 @@ enum
 	PACKET_INVENTORY_WHOLE           = 0x68,
 	PACKET_WINDOW_PROPERTY           = 0x69,
 	PACKET_CREATIVE_INVENTORY_ACTION = 0x6B,
+	PACKET_ENCHANT_ITEM              = 0x6C,
 	PACKET_UPDATE_SIGN               = 0x82,
 	PACKET_ITEM_DATA                 = 0x83,
 	PACKET_PLAYER_LIST_ITEM          = 0xC9,
@@ -161,8 +162,8 @@ void cProtocol125::SendBlockAction(int a_BlockX, int a_BlockY, int a_BlockZ, cha
 	WriteInt  (a_BlockX);
 	WriteShort((short)a_BlockY);
 	WriteInt  (a_BlockZ);
-	WriteByte (a_Byte1);
-	WriteByte (a_Byte2);
+	WriteChar (a_Byte1);
+	WriteChar (a_Byte2);
 	Flush();
 }
 
@@ -209,12 +210,12 @@ void cProtocol125::SendBlockChanges(int a_ChunkX, int a_ChunkZ, const sSetBlockV
 	WriteByte (PACKET_MULTI_BLOCK);
 	WriteInt  (a_ChunkX);
 	WriteInt  (a_ChunkZ);
-	WriteShort((unsigned short)a_Changes.size());
-	WriteUInt (sizeof(int) * a_Changes.size());
+	WriteShort((short)a_Changes.size());
+	WriteUInt ((UInt32)(4 * a_Changes.size()));
 	for (sSetBlockVector::const_iterator itr = a_Changes.begin(), end = a_Changes.end(); itr != end; ++itr)
 	{
-		unsigned int Coords = itr->y | (itr->z << 8) | (itr->x << 12);
-		unsigned int Blocks = itr->BlockMeta | (itr->BlockType << 4);
+		UInt32 Coords = ((UInt32)itr->y) | ((UInt32)(itr->z << 8)) | ((UInt32)(itr->x << 12));
+		UInt32 Blocks = ((UInt32)itr->BlockMeta) | ((UInt32)(itr->BlockType << 4));
 		WriteUInt(Coords << 16 | Blocks);
 	}
 	Flush();
@@ -325,8 +326,8 @@ void cProtocol125::SendEntityEffect(const cEntity & a_Entity, int a_EffectID, in
 	cCSLock Lock(m_CSPacket);
 	WriteByte (PACKET_ENTITY_EFFECT);
 	WriteInt  (a_Entity.GetUniqueID());
-	WriteByte (a_EffectID);
-	WriteByte (a_Amplifier);
+	WriteByte ((Byte)a_EffectID);
+	WriteByte ((Byte)a_Amplifier);
 	WriteShort(a_Duration);
 	Flush();
 }
@@ -357,7 +358,7 @@ void cProtocol125::SendEntityHeadLook(const cEntity & a_Entity)
 	cCSLock Lock(m_CSPacket);
 	WriteByte(PACKET_ENT_HEAD_LOOK);
 	WriteInt (a_Entity.GetUniqueID());
-	WriteByte((char)((a_Entity.GetHeadYaw() / 360.f) * 256));
+	WriteChar((char)((a_Entity.GetHeadYaw() / 360.f) * 256));
 	Flush();
 }
 
@@ -372,8 +373,8 @@ void cProtocol125::SendEntityLook(const cEntity & a_Entity)
 	cCSLock Lock(m_CSPacket);
 	WriteByte(PACKET_ENT_LOOK);
 	WriteInt (a_Entity.GetUniqueID());
-	WriteByte((char)((a_Entity.GetYaw()   / 360.f) * 256));
-	WriteByte((char)((a_Entity.GetPitch() / 360.f) * 256));
+	WriteChar((char)((a_Entity.GetYaw()   / 360.f) * 256));
+	WriteChar((char)((a_Entity.GetPitch() / 360.f) * 256));
 	Flush();
 }
 
@@ -421,9 +422,9 @@ void cProtocol125::SendEntityRelMove(const cEntity & a_Entity, char a_RelX, char
 	cCSLock Lock(m_CSPacket);
 	WriteByte(PACKET_ENT_REL_MOVE);
 	WriteInt (a_Entity.GetUniqueID());
-	WriteByte(a_RelX);
-	WriteByte(a_RelY);
-	WriteByte(a_RelZ);
+	WriteChar(a_RelX);
+	WriteChar(a_RelY);
+	WriteChar(a_RelZ);
 	Flush();
 }
 
@@ -438,11 +439,11 @@ void cProtocol125::SendEntityRelMoveLook(const cEntity & a_Entity, char a_RelX,
 	cCSLock Lock(m_CSPacket);
 	WriteByte(PACKET_ENT_REL_MOVE_LOOK);
 	WriteInt (a_Entity.GetUniqueID());
-	WriteByte(a_RelX);
-	WriteByte(a_RelY);
-	WriteByte(a_RelZ);
-	WriteByte((char)((a_Entity.GetYaw()   / 360.f) * 256));
-	WriteByte((char)((a_Entity.GetPitch() / 360.f) * 256));
+	WriteChar(a_RelX);
+	WriteChar(a_RelY);
+	WriteChar(a_RelZ);
+	WriteChar((char)((a_Entity.GetYaw()   / 360.f) * 256));
+	WriteChar((char)((a_Entity.GetPitch() / 360.f) * 256));
 	Flush();
 }
 
@@ -455,7 +456,7 @@ void cProtocol125::SendEntityStatus(const cEntity & a_Entity, char a_Status)
 	cCSLock Lock(m_CSPacket);
 	WriteByte(PACKET_ENT_STATUS);
 	WriteInt (a_Entity.GetUniqueID());
-	WriteByte(a_Status);
+	WriteChar(a_Status);
 	Flush();
 }
 
@@ -488,7 +489,7 @@ void cProtocol125::SendExplosion(double a_BlockX, double a_BlockY, double a_Bloc
 	WriteDouble (a_BlockY);
 	WriteDouble (a_BlockZ);
 	WriteFloat  (a_Radius);
-	WriteInt    (a_BlocksAffected.size());
+	WriteInt    ((Int32)a_BlocksAffected.size());
 	int BlockX = (int)a_BlockX;
 	int BlockY = (int)a_BlockY;
 	int BlockZ = (int)a_BlockZ;
@@ -513,7 +514,7 @@ void cProtocol125::SendGameMode(eGameMode a_GameMode)
 	cCSLock Lock(m_CSPacket);
 	WriteByte(PACKET_CHANGE_GAME_STATE);
 	WriteByte(3);
-	WriteByte((char)a_GameMode);
+	WriteChar((char)a_GameMode);
 	Flush();
 }
 
@@ -537,9 +538,10 @@ void cProtocol125::SendHealth(void)
 {
 	cCSLock Lock(m_CSPacket);
 	WriteByte (PACKET_UPDATE_HEALTH);
-	WriteShort((short)m_Client->GetPlayer()->GetHealth());
-	WriteShort(m_Client->GetPlayer()->GetFoodLevel());
-	WriteFloat((float)m_Client->GetPlayer()->GetFoodSaturationLevel());
+	cPlayer * Player = m_Client->GetPlayer();
+	WriteShort((short)Player->GetHealth());
+	WriteShort((short)Player->GetFoodLevel());
+	WriteFloat((float)Player->GetFoodSaturationLevel());
 	Flush();
 }
 
@@ -551,7 +553,7 @@ void cProtocol125::SendInventorySlot(char a_WindowID, short a_SlotNum, const cIt
 {
 	cCSLock Lock(m_CSPacket);
 	WriteByte (PACKET_INVENTORY_SLOT);
-	WriteByte (a_WindowID);
+	WriteChar (a_WindowID);
 	WriteShort(a_SlotNum);
 	WriteItem (a_Item);
 	Flush();
@@ -594,23 +596,29 @@ void cProtocol125::SendLogin(const cPlayer & a_Player, const cWorld & a_World)
 
 
 
+void cProtocol125::SendLoginSuccess(void)
+{
+	// Not supported in this protocol version
+}
+
+
+
+
+
 void cProtocol125::SendMapColumn(int a_ID, int a_X, int a_Y, const Byte * a_Colors, unsigned int a_Length)
 {
 	cCSLock Lock(m_CSPacket);
 
 	WriteByte (PACKET_ITEM_DATA);
 	WriteShort(E_ITEM_MAP);
-	WriteShort(a_ID);
-	WriteShort(3 + a_Length);
+	WriteShort((short)a_ID);
+	WriteShort((short)(3 + a_Length));
 
 	WriteByte(0);
-	WriteByte(a_X);
-	WriteByte(a_Y);
+	WriteChar((char)a_X);
+	WriteChar((char)a_Y);
 	
-	for (unsigned int i = 0; i < a_Length; ++i)
-	{
-		WriteByte(a_Colors[i]);
-	}
+	SendData((const char *)a_Colors, a_Length);
 
 	Flush();
 }
@@ -625,16 +633,16 @@ void cProtocol125::SendMapDecorators(int a_ID, const cMapDecoratorList & a_Decor
 
 	WriteByte (PACKET_ITEM_DATA);
 	WriteShort(E_ITEM_MAP);
-	WriteShort(a_ID);
-	WriteShort(1 + (3 * a_Decorators.size()));
+	WriteShort((short)a_ID);
+	WriteShort((short)(1 + (3 * a_Decorators.size())));
 
 	WriteByte(1);
 	
 	for (cMapDecoratorList::const_iterator it = a_Decorators.begin(); it != a_Decorators.end(); ++it)
 	{
-		WriteByte((it->GetType() << 4) | (it->GetRot() & 0xf));
-		WriteByte(it->GetPixelX());
-		WriteByte(it->GetPixelZ());
+		WriteByte((Byte)(it->GetType() << 4) | (it->GetRot() & 0xf));
+		WriteByte((Byte)it->GetPixelX());
+		WriteByte((Byte)it->GetPixelZ());
 	}
 
 	Flush();
@@ -645,18 +653,30 @@ void cProtocol125::SendMapDecorators(int a_ID, const cMapDecoratorList & a_Decor
 
 
 
+void cProtocol125::SendMapInfo(int a_ID, unsigned int a_Scale)
+{
+	// This protocol doesn't support such message
+	UNUSED(a_ID);
+	UNUSED(a_Scale);
+}
+
+
+
+
+
 void cProtocol125::SendPickupSpawn(const cPickup & a_Pickup)
 {
 	cCSLock Lock(m_CSPacket);
 	WriteByte   (PACKET_PICKUP_SPAWN);
 	WriteInt    (a_Pickup.GetUniqueID());
-	WriteShort  (a_Pickup.GetItem().m_ItemType);
-	WriteByte   (a_Pickup.GetItem().m_ItemCount);
-	WriteShort  (a_Pickup.GetItem().m_ItemDamage);
+	const cItem & Item = a_Pickup.GetItem();
+	WriteShort  (Item.m_ItemType);
+	WriteChar   (Item.m_ItemCount);
+	WriteShort  (Item.m_ItemDamage);
 	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));
+	WriteByte   ((char)(a_Pickup.GetSpeedX() * 8));
+	WriteByte   ((char)(a_Pickup.GetSpeedY() * 8));
+	WriteByte   ((char)(a_Pickup.GetSpeedZ() * 8));
 	Flush();
 }
 
@@ -669,7 +689,7 @@ void cProtocol125::SendEntityAnimation(const cEntity & a_Entity, char a_Animatio
 	cCSLock Lock(m_CSPacket);
 	WriteByte(PACKET_ANIMATION);
 	WriteInt (a_Entity.GetUniqueID());
-	WriteByte(a_Animation);
+	WriteChar(a_Animation);
 	Flush();
 }
 
@@ -686,6 +706,16 @@ void cProtocol125::SendParticleEffect(const AString & a_ParticleName, float a_Sr
 
 
 
+void cProtocol125::SendPaintingSpawn(const cPainting & a_Painting)
+{
+	// Not implemented in this protocol version
+	UNUSED(a_Painting);
+}
+
+
+
+
+
 void cProtocol125::SendPlayerListItem(const cPlayer & a_Player, bool a_IsOnline)
 {
 	cCSLock Lock(m_CSPacket);
@@ -763,8 +793,8 @@ void cProtocol125::SendPlayerSpawn(const cPlayer & a_Player)
 	WriteInt   ((int)(a_Player.GetPosX() * 32));
 	WriteInt   ((int)(a_Player.GetPosY() * 32));
 	WriteInt   ((int)(a_Player.GetPosZ() * 32));
-	WriteByte  ((char)((a_Player.GetYaw()   / 360.f) * 256));
-	WriteByte  ((char)((a_Player.GetPitch() / 360.f) * 256));
+	WriteChar  ((char)((a_Player.GetYaw()   / 360.f) * 256));
+	WriteChar  ((char)((a_Player.GetPitch() / 360.f) * 256));
 	WriteShort (HeldItem.IsEmpty() ? 0 : HeldItem.m_ItemType);
 	Flush();
 }
@@ -790,9 +820,9 @@ void cProtocol125::SendPluginMessage(const AString & a_Channel, const AString &
 void cProtocol125::SendRemoveEntityEffect(const cEntity & a_Entity, int a_EffectID)
 {
 	cCSLock Lock(m_CSPacket);
-	WriteByte  (PACKET_REMOVE_ENTITY_EFFECT);
-	WriteInt   (a_Entity.GetUniqueID());
-	WriteByte  (a_EffectID);
+	WriteByte(PACKET_REMOVE_ENTITY_EFFECT);
+	WriteInt (a_Entity.GetUniqueID());
+	WriteChar((char)a_EffectID);
 	Flush();
 }
 
@@ -803,10 +833,11 @@ void cProtocol125::SendRemoveEntityEffect(const cEntity & a_Entity, int a_Effect
 void cProtocol125::SendRespawn(void)
 {
 	cCSLock Lock(m_CSPacket);
+	cPlayer * Player = m_Client->GetPlayer();
 	WriteByte  (PACKET_RESPAWN);
-	WriteInt   ((int)(m_Client->GetPlayer()->GetWorld()->GetDimension()));
+	WriteInt   ((int)(Player->GetWorld()->GetDimension()));
 	WriteByte  (2);  // TODO: Difficulty; 2 = Normal
-	WriteByte  ((char)m_Client->GetPlayer()->GetGameMode());
+	WriteChar  ((char)Player->GetGameMode());
 	WriteShort (256);  // Current world height
 	WriteString("default");
 }
@@ -818,10 +849,11 @@ void cProtocol125::SendRespawn(void)
 void cProtocol125::SendExperience(void)
 {
 	cCSLock Lock(m_CSPacket);
+	cPlayer * Player = m_Client->GetPlayer();
 	WriteByte  (PACKET_EXPERIENCE);
-	WriteFloat (m_Client->GetPlayer()->GetXpPercentage());
-	WriteShort (m_Client->GetPlayer()->GetXpLevel());
-	WriteShort (m_Client->GetPlayer()->GetCurrentXp());
+	WriteFloat (Player->GetXpPercentage());
+	WriteShort (Player->GetXpLevel());
+	WriteShort (Player->GetCurrentXp());
 	Flush();
 }
 
@@ -837,7 +869,7 @@ void cProtocol125::SendExperienceOrb(const cExpOrb & a_ExpOrb)
 	WriteInt((int) a_ExpOrb.GetPosX());
 	WriteInt((int) a_ExpOrb.GetPosY());
 	WriteInt((int) a_ExpOrb.GetPosZ());
-	WriteShort(a_ExpOrb.GetReward());
+	WriteShort((short)a_ExpOrb.GetReward());
 	Flush();
 }
 
@@ -845,6 +877,18 @@ void cProtocol125::SendExperienceOrb(const cExpOrb & a_ExpOrb)
 
 
 
+void cProtocol125::SendScoreboardObjective(const AString & a_Name, const AString & a_DisplayName, Byte a_Mode)
+{
+	// This protocol version doesn't support such message
+	UNUSED(a_Name);
+	UNUSED(a_DisplayName);
+	UNUSED(a_Mode);
+}
+
+
+
+
+
 void cProtocol125::SendSoundEffect(const AString & a_SoundName, int a_SrcX, int a_SrcY, int a_SrcZ, float a_Volume, float a_Pitch)
 {
 	// Not needed in this protocol version
@@ -878,7 +922,7 @@ void cProtocol125::SendSpawnMob(const cMonster & a_Mob)
 	cCSLock Lock(m_CSPacket);
 	WriteByte   (PACKET_SPAWN_MOB);
 	WriteInt    (a_Mob.GetUniqueID());
-	WriteByte   (a_Mob.GetMobType());
+	WriteByte   ((Byte)a_Mob.GetMobType());
 	WriteVectorI((Vector3i)(a_Mob.GetPosition() * 32));
 	WriteByte   (0);
 	WriteByte   (0);
@@ -903,7 +947,7 @@ void cProtocol125::SendSpawnObject(const cEntity & a_Entity, char a_ObjectType,
 	cCSLock Lock(m_CSPacket);
 	WriteByte(PACKET_SPAWN_OBJECT);
 	WriteInt (a_Entity.GetUniqueID());
-	WriteByte(a_ObjectType);
+	WriteChar(a_ObjectType);
 	WriteInt ((int)(a_Entity.GetPosX() * 32));
 	WriteInt ((int)(a_Entity.GetPosY() * 32));
 	WriteInt ((int)(a_Entity.GetPosZ() * 32));
@@ -928,7 +972,7 @@ void cProtocol125::SendSpawnVehicle(const cEntity & a_Vehicle, char a_VehicleTyp
 	cCSLock Lock(m_CSPacket);
 	WriteByte (PACKET_SPAWN_OBJECT);
 	WriteInt  (a_Vehicle.GetUniqueID());
-	WriteByte (a_VehicleType);
+	WriteChar (a_VehicleType);
 	WriteInt  ((int)(a_Vehicle.GetPosX() * 32));
 	WriteInt  ((int)(a_Vehicle.GetPosY() * 32));
 	WriteInt  ((int)(a_Vehicle.GetPosZ() * 32));
@@ -966,8 +1010,8 @@ void cProtocol125::SendTeleportEntity(const cEntity & a_Entity)
 	WriteInt    ((int)(floor(a_Entity.GetPosX() * 32)));
 	WriteInt    ((int)(floor(a_Entity.GetPosY() * 32)));
 	WriteInt    ((int)(floor(a_Entity.GetPosZ() * 32)));
-	WriteByte   ((char)((a_Entity.GetYaw() / 360.f) * 256));
-	WriteByte   ((char)((a_Entity.GetPitch() / 360.f) * 256));
+	WriteChar   ((char)((a_Entity.GetYaw() / 360.f) * 256));
+	WriteChar   ((char)((a_Entity.GetPitch() / 360.f) * 256));
 	Flush();
 }
 
@@ -1042,7 +1086,7 @@ void cProtocol125::SendUseBed(const cEntity & a_Entity, int a_BlockX, int a_Bloc
 	WriteInt (a_Entity.GetUniqueID());
 	WriteByte(0);	// Unknown byte only 0 has been observed
 	WriteInt (a_BlockX);
-	WriteByte(a_BlockY);
+	WriteByte((Byte)a_BlockY);
 	WriteInt (a_BlockZ);
 	Flush();
 }
@@ -1086,7 +1130,7 @@ void cProtocol125::SendWholeInventory(const cWindow & a_Window)
 	cCSLock Lock(m_CSPacket);
 	cItems Slots;
 	a_Window.GetSlots(*(m_Client->GetPlayer()), Slots);
-	SendWindowSlots(a_Window.GetWindowID(), Slots.size(), &(Slots[0]));
+	SendWindowSlots(a_Window.GetWindowID(), (int)Slots.size(), &(Slots[0]));
 }
 
 
@@ -1103,7 +1147,7 @@ void cProtocol125::SendWindowClose(const cWindow & a_Window)
 	
 	cCSLock Lock(m_CSPacket);
 	WriteByte(PACKET_WINDOW_CLOSE);
-	WriteByte(a_Window.GetWindowID());
+	WriteChar(a_Window.GetWindowID());
 	Flush();
 }
 
@@ -1120,10 +1164,10 @@ void cProtocol125::SendWindowOpen(const cWindow & a_Window)
 	}
 	cCSLock Lock(m_CSPacket);
 	WriteByte  (PACKET_WINDOW_OPEN);
-	WriteByte  (a_Window.GetWindowID());
-	WriteByte  (a_Window.GetWindowType());
+	WriteChar  (a_Window.GetWindowID());
+	WriteByte  ((Byte)a_Window.GetWindowType());
 	WriteString(a_Window.GetWindowTitle());
-	WriteByte  (a_Window.GetNumNonInventorySlots());
+	WriteByte  ((Byte)a_Window.GetNumNonInventorySlots());
 	Flush();
 }
 
@@ -1135,7 +1179,7 @@ void cProtocol125::SendWindowProperty(const cWindow & a_Window, short a_Property
 {
 	cCSLock Lock(m_CSPacket);
 	WriteByte (PACKET_WINDOW_PROPERTY);
-	WriteByte (a_Window.GetWindowID());
+	WriteChar (a_Window.GetWindowID());
 	WriteShort(a_Property);
 	WriteShort(a_Value);
 	Flush();
@@ -1156,7 +1200,7 @@ AString cProtocol125::GetAuthServerID(void)
 
 
 
-void cProtocol125::SendData(const char * a_Data, int a_Size)
+void cProtocol125::SendData(const char * a_Data, size_t a_Size)
 {
 	m_Client->SendData(a_Data, a_Size);
 }
@@ -1239,6 +1283,7 @@ int cProtocol125::ParsePacket(unsigned char a_PacketType)
 		case PACKET_SLOT_SELECTED:             return ParseSlotSelected();
 		case PACKET_UPDATE_SIGN:               return ParseUpdateSign();
 		case PACKET_USE_ENTITY:                return ParseUseEntity();
+		case PACKET_ENCHANT_ITEM:              return ParseEnchantItem();
 		case PACKET_WINDOW_CLICK:              return ParseWindowClick();
 		case PACKET_WINDOW_CLOSE:              return ParseWindowClose();
 	}
@@ -1527,7 +1572,7 @@ int cProtocol125::ParsePluginMessage(void)
 	HANDLE_PACKET_READ(ReadBEUTF16String16, AString, ChannelName);
 	HANDLE_PACKET_READ(ReadBEShort,         short,   Length);
 	AString Data;
-	if (!m_ReceivedData.ReadString(Data, Length))
+	if (!m_ReceivedData.ReadString(Data, (size_t)Length))
 	{
 		m_ReceivedData.CheckValid();
 		return PARSE_INCOMPLETE;
@@ -1600,6 +1645,20 @@ int cProtocol125::ParseUseEntity(void)
 
 
 
+int cProtocol125::ParseEnchantItem(void)
+{
+	HANDLE_PACKET_READ(ReadByte, Byte, WindowID);
+	HANDLE_PACKET_READ(ReadByte, Byte, Enchantment);
+
+	m_Client->HandleEnchantItem(WindowID, Enchantment);
+
+	return PARSE_OK;
+}
+
+
+
+
+
 int cProtocol125::ParseWindowClick(void)
 {
 	HANDLE_PACKET_READ(ReadChar,    char,  WindowID);
@@ -1688,7 +1747,7 @@ void cProtocol125::SendPreChunk(int a_ChunkX, int a_ChunkZ, bool a_ShouldLoad)
 void cProtocol125::SendWindowSlots(char a_WindowID, int a_NumItems, const cItem * a_Items)
 {
 	WriteByte (PACKET_INVENTORY_WHOLE);
-	WriteByte (a_WindowID);
+	WriteChar (a_WindowID);
 	WriteShort((short)a_NumItems);
 
 	for (int j = 0; j < a_NumItems; j++)
@@ -1718,7 +1777,7 @@ void cProtocol125::WriteItem(const cItem & a_Item)
 		return;
 	}
 	
-	WriteByte (a_Item.m_ItemCount);
+	WriteChar (a_Item.m_ItemCount);
 	WriteShort(a_Item.m_ItemDamage);
 	
 	if (cItem::IsEnchantable(a_Item.m_ItemType))
@@ -1765,7 +1824,7 @@ int cProtocol125::ParseItem(cItem & a_Item)
 	}
 		
 	// TODO: Enchantment not implemented yet!
-	if (!m_ReceivedData.SkipRead(EnchantNumBytes))
+	if (!m_ReceivedData.SkipRead((size_t)EnchantNumBytes))
 	{
 		return PARSE_INCOMPLETE;
 	}
@@ -1850,7 +1909,7 @@ void cProtocol125::WriteMobMetadata(const cMonster & a_Mob)
 		case cMonster::mtCreeper:
 		{
 			WriteByte(0x10);
-			WriteByte(((const cCreeper &)a_Mob).IsBlowing() ? 1 : -1); // Blowing up?
+			WriteChar(((const cCreeper &)a_Mob).IsBlowing() ? 1 : -1); // Blowing up?
 			WriteByte(0x11);
 			WriteByte(((const cCreeper &)a_Mob).IsCharged() ? 1 : 0); // Lightning-charged?
 			break;
@@ -1920,9 +1979,9 @@ void cProtocol125::WriteMobMetadata(const cMonster & a_Mob)
 
 			WriteByte(0x10);
 			Byte SheepMetadata = 0;
-			SheepMetadata = ((const cSheep &)a_Mob).GetFurColor(); // Fur colour
+			SheepMetadata = (Byte)((const cSheep &)a_Mob).GetFurColor();
 
-			if (((const cSheep &)a_Mob).IsSheared()) // Is sheared?
+			if (((const cSheep &)a_Mob).IsSheared())
 			{
 				SheepMetadata |= 0x16;
 			}
@@ -1954,7 +2013,7 @@ void cProtocol125::WriteMobMetadata(const cMonster & a_Mob)
 		case cMonster::mtWither:
 		{
 			WriteByte(0x54); // Int at index 20
-			WriteInt(((const cWither &)a_Mob).GetNumInvulnerableTicks());
+			WriteInt((Int32)((const cWither &)a_Mob).GetNumInvulnerableTicks());
 			WriteByte(0x66); // Float at index 6
 			WriteFloat((float)(a_Mob.GetHealth()));
 			break;
@@ -1965,11 +2024,11 @@ void cProtocol125::WriteMobMetadata(const cMonster & a_Mob)
 			WriteByte(0x10);
 			if (a_Mob.GetMobType() == cMonster::mtSlime)
 			{
-				WriteByte(((const cSlime &)a_Mob).GetSize()); // Size of slime - HEWGE, meh, cute BABBY SLIME
+				WriteByte((Byte)((const cSlime &)a_Mob).GetSize()); // Size of slime - HEWGE, meh, cute BABBY SLIME
 			}
 			else
 			{
-				WriteByte(((const cMagmaCube &)a_Mob).GetSize()); // Size of slime - HEWGE, meh, cute BABBY SLIME
+				WriteByte((Byte)((const cMagmaCube &)a_Mob).GetSize()); // Size of slime - HEWGE, meh, cute BABBY SLIME
 			}
 			break;
 		}
@@ -2008,7 +2067,7 @@ void cProtocol125::WriteMobMetadata(const cMonster & a_Mob)
 			WriteInt(Flags);
 
 			WriteByte(0x13);
-			WriteByte(((const cHorse &)a_Mob).GetHorseType()); // Type of horse (donkey, chestnut, etc.)
+			WriteByte((Byte)((const cHorse &)a_Mob).GetHorseType()); // Type of horse (donkey, chestnut, etc.)
 
 			WriteByte(0x54);
 			int Appearance = 0;
@@ -2020,6 +2079,10 @@ void cProtocol125::WriteMobMetadata(const cMonster & a_Mob)
 			WriteInt(((const cHorse &)a_Mob).GetHorseArmour()); // Horshey armour
 			break;
 		}
+		default:
+		{
+			break;
+		}
 	}
 }
 
diff --git a/src/Protocol/Protocol125.h b/src/Protocol/Protocol125.h
index aca24c03a..89e64f386 100644
--- a/src/Protocol/Protocol125.h
+++ b/src/Protocol/Protocol125.h
@@ -56,19 +56,12 @@ public:
 	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 SendLoginSuccess        (void) override;
 	virtual void SendMapColumn           (int a_ID, int a_X, int a_Y, const Byte * a_Colors, unsigned int a_Length) override;
 	virtual void SendMapDecorators       (int a_ID, const cMapDecoratorList & a_Decorators) override;
-	virtual void SendMapInfo             (int a_ID, unsigned int a_Scale) override 
-	{
-		// This protocol doesn't support such message
-		UNUSED(a_ID);
-		UNUSED(a_Scale);
-	} 
+	virtual void SendMapInfo             (int a_ID, unsigned int a_Scale) override;
 	virtual void SendParticleEffect      (const AString & a_ParticleName, float a_SrcX, float a_SrcY, float a_SrcZ, float a_OffsetX, float a_OffsetY, float a_OffsetZ, float a_ParticleData, int a_ParticleAmmount) override;
-	virtual void SendPaintingSpawn       (const cPainting & a_Painting) override 
-	{
-		UNUSED(a_Painting);
-	};
+	virtual void SendPaintingSpawn       (const cPainting & a_Painting) override;
 	virtual void SendPickupSpawn         (const cPickup & a_Pickup) override;
 	virtual void SendPlayerAbilities     (void) override {}  // This protocol doesn't support such message
 	virtual void SendEntityAnimation     (const cEntity & a_Entity, char a_Animation) override;
@@ -82,12 +75,7 @@ public:
 	virtual void SendRespawn             (void) override;
 	virtual void SendExperience          (void) override;
 	virtual void SendExperienceOrb       (const cExpOrb &  a_ExpOrb) override;
-	virtual void SendScoreboardObjective (const AString & a_Name, const AString & a_DisplayName, Byte a_Mode)                            override 
-	{
-		UNUSED(a_Name);
-		UNUSED(a_DisplayName);
-		UNUSED(a_Mode);
-	} // This protocol doesn't support such message
+	virtual void SendScoreboardObjective (const AString & a_Name, const AString & a_DisplayName, Byte a_Mode) override;
 	virtual void SendScoreUpdate         (const AString & a_Objective, const AString & a_Player, cObjective::Score a_Score, Byte a_Mode) override {} // This protocol doesn't support such message
 	virtual void SendDisplayObjective    (const AString & a_Objective, cScoreboard::eDisplaySlot a_Display)                              override {} // This protocol doesn't support such message
 	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
@@ -125,7 +113,7 @@ protected:
 	
 	AString m_Username;  ///< Stored in ParseHandshake(), compared to Login username
 	
-	virtual void SendData(const char * a_Data, int a_Size) override;
+	virtual void SendData(const char * a_Data, size_t a_Size) override;
 	
 	/// Sends the Handshake packet
 	void SendHandshake(const AString & a_ConnectionHash);
@@ -155,6 +143,7 @@ protected:
 	virtual int ParseSlotSelected           (void);
 	virtual int ParseUpdateSign             (void);
 	virtual int ParseUseEntity              (void);
+	virtual int ParseEnchantItem            (void);
 	virtual int ParseWindowClick            (void);
 	virtual int ParseWindowClose            (void);
 	
diff --git a/src/Protocol/Protocol132.cpp b/src/Protocol/Protocol132.cpp
index be9c503ed..53d8c1561 100644
--- a/src/Protocol/Protocol132.cpp
+++ b/src/Protocol/Protocol132.cpp
@@ -115,7 +115,7 @@ void cProtocol132::DataReceived(const char * a_Data, size_t a_Size)
 		Byte Decrypted[512];
 		while (a_Size > 0)
 		{
-			int NumBytes = (a_Size > (int)sizeof(Decrypted)) ? (int)sizeof(Decrypted) : a_Size;
+			size_t 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;
@@ -139,8 +139,8 @@ void cProtocol132::SendBlockAction(int a_BlockX, int a_BlockY, int a_BlockZ, cha
 	WriteInt  (a_BlockX);
 	WriteShort((short)a_BlockY);
 	WriteInt  (a_BlockZ);
-	WriteByte (a_Byte1);
-	WriteByte (a_Byte2);
+	WriteChar (a_Byte1);
+	WriteChar (a_Byte2);
 	WriteShort(a_BlockType);
 	Flush();
 }
@@ -157,7 +157,7 @@ void cProtocol132::SendBlockBreakAnim(int a_entityID, int a_BlockX, int a_BlockY
 	WriteInt    (a_BlockX);
 	WriteInt    (a_BlockY);
 	WriteInt    (a_BlockZ);
-	WriteByte   (stage);
+	WriteChar   (stage);
 	Flush();
 }
 
@@ -259,7 +259,7 @@ void cProtocol132::SendLogin(const cPlayer & a_Player, const cWorld & a_World)
 	WriteByte  (PACKET_LOGIN);
 	WriteInt   (a_Player.GetUniqueID());  // EntityID of the player
 	WriteString("default");  // Level type
-	WriteByte  ((int)a_Player.GetGameMode());
+	WriteByte  ((Byte)a_Player.GetGameMode());
 	WriteByte  ((Byte)(a_World.GetDimension()));
 	WriteByte  (2);  // TODO: Difficulty
 	WriteByte  (0);  // Unused, used to be world height
@@ -283,8 +283,8 @@ void cProtocol132::SendPlayerSpawn(const cPlayer & a_Player)
 	WriteInt   ((int)(a_Player.GetPosX() * 32));
 	WriteInt   ((int)(a_Player.GetPosY() * 32));
 	WriteInt   ((int)(a_Player.GetPosZ() * 32));
-	WriteByte  ((char)((a_Player.GetYaw()   / 360.f) * 256));
-	WriteByte  ((char)((a_Player.GetPitch() / 360.f) * 256));
+	WriteChar  ((char)((a_Player.GetYaw()   / 360.f) * 256));
+	WriteChar  ((char)((a_Player.GetPitch() / 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)
@@ -306,7 +306,7 @@ void cProtocol132::SendSoundEffect(const AString & a_SoundName, int a_SrcX, int
 	WriteInt    (a_SrcY);
 	WriteInt    (a_SrcZ);
 	WriteFloat  (a_Volume);
-	WriteByte   ((char)(a_Pitch * 63.0f));
+	WriteChar   ((char)(a_Pitch * 63.0f));
 	Flush();
 }
 
@@ -320,7 +320,7 @@ void cProtocol132::SendSoundParticleEffect(int a_EffectID, int a_SrcX, int a_Src
 	WriteByte(PACKET_SOUND_PARTICLE_EFFECT);
 	WriteInt (a_EffectID);
 	WriteInt (a_SrcX);
-	WriteByte(a_SrcY);
+	WriteByte((Byte)a_SrcY);
 	WriteInt (a_SrcZ);
 	WriteInt (a_Data);
 	Flush();
@@ -335,7 +335,7 @@ void cProtocol132::SendSpawnMob(const cMonster & a_Mob)
 	cCSLock Lock(m_CSPacket);
 	WriteByte   (PACKET_SPAWN_MOB);
 	WriteInt    (a_Mob.GetUniqueID());
-	WriteByte   (a_Mob.GetMobType());
+	WriteByte   ((Byte)a_Mob.GetMobType());
 	WriteVectorI((Vector3i)(a_Mob.GetPosition() * 32));
 	WriteByte   ((Byte)((a_Mob.GetYaw()     / 360.f) * 256));
 	WriteByte   ((Byte)((a_Mob.GetPitch()   / 360.f) * 256));
@@ -408,21 +408,22 @@ void cProtocol132::SendWholeInventory(const cWindow & a_Window)
 	super::SendWholeInventory(a_Window);
 	
 	// Send the player inventory and hotbar:
-	const cInventory & Inventory = m_Client->GetPlayer()->GetInventory();
+	cPlayer * Player = m_Client->GetPlayer();
+	const cInventory & Inventory = Player->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++)
+	for (short 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++)
+	for (short 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());
+	SendInventorySlot(-1, -1, Player->GetDraggingItem());
 }
 
 
@@ -527,21 +528,30 @@ int cProtocol132::ParseClientStatuses(void)
 
 int cProtocol132::ParseEncryptionKeyResponse(void)
 {
+	// Read the encryption key:
 	HANDLE_PACKET_READ(ReadBEShort, short, EncKeyLength);
+	if (EncKeyLength > MAX_ENC_LEN)
+	{
+		LOGD("Too long encryption key");
+		m_Client->Kick("Hacked client");
+		return PARSE_OK;
+	}
 	AString EncKey;
-	if (!m_ReceivedData.ReadString(EncKey, EncKeyLength))
+	if (!m_ReceivedData.ReadString(EncKey, (size_t)EncKeyLength))
 	{
 		return PARSE_INCOMPLETE;
 	}
+	
+	// Read the encryption nonce:
 	HANDLE_PACKET_READ(ReadBEShort, short, EncNonceLength);
 	AString EncNonce;
-	if (!m_ReceivedData.ReadString(EncNonce, EncNonceLength))
+	if (!m_ReceivedData.ReadString(EncNonce, (size_t)EncNonceLength))
 	{
 		return PARSE_INCOMPLETE;
 	}
-	if ((EncKeyLength > MAX_ENC_LEN) || (EncNonceLength > MAX_ENC_LEN))
+	if (EncNonceLength > MAX_ENC_LEN)
 	{
-		LOGD("Too long encryption");
+		LOGD("Too long encryption nonce");
 		m_Client->Kick("Hacked client");
 		return PARSE_OK;
 	}
@@ -605,7 +615,7 @@ int cProtocol132::ParseTabCompletion(void)
 
 
 
-void cProtocol132::SendData(const char * a_Data, int a_Size)
+void cProtocol132::SendData(const char * a_Data, size_t a_Size)
 {
 	m_DataToSend.append(a_Data, a_Size);
 }
@@ -623,23 +633,23 @@ void cProtocol132::Flush(void)
 		LOGD("Flushing empty");
 		return;
 	}
-	const char * a_Data = m_DataToSend.data();
-	int a_Size = m_DataToSend.size();
+	const char * Data = m_DataToSend.data();
+	size_t Size = m_DataToSend.size();
 	if (m_IsEncrypted)
 	{
 		Byte Encrypted[8192];  // Larger buffer, we may be sending lots of data (chunks)
-		while (a_Size > 0)
+		while (Size > 0)
 		{
-			int NumBytes = (a_Size > (int)sizeof(Encrypted)) ? (int)sizeof(Encrypted) : a_Size;
-			m_Encryptor.ProcessData(Encrypted, (Byte *)a_Data, NumBytes);
+			size_t NumBytes = (Size > sizeof(Encrypted)) ? sizeof(Encrypted) : Size;
+			m_Encryptor.ProcessData(Encrypted, (Byte *)Data, NumBytes);
 			super::SendData((const char *)Encrypted, NumBytes);
-			a_Size -= NumBytes;
-			a_Data += NumBytes;
+			Size -= NumBytes;
+			Data += NumBytes;
 		}
 	}
 	else
 	{
-		super::SendData(a_Data, a_Size);
+		super::SendData(Data, Size);
 	}
 	m_DataToSend.clear();
 }
@@ -665,7 +675,7 @@ void cProtocol132::WriteItem(const cItem & a_Item)
 	}
 	
 	WriteShort(ItemType);
-	WriteByte (a_Item.m_ItemCount);
+	WriteChar (a_Item.m_ItemCount);
 	WriteShort(a_Item.m_ItemDamage);
 	
 	if (a_Item.m_Enchantments.IsEmpty())
@@ -681,7 +691,7 @@ void cProtocol132::WriteItem(const cItem & a_Item)
 	Writer.Finish();
 	AString Compressed;
 	CompressStringGZIP(Writer.GetResult().data(), Writer.GetResult().size(), Compressed);
-	WriteShort(Compressed.size());
+	WriteShort((short)Compressed.size());
 	SendData(Compressed.data(), Compressed.size());
 }
 
@@ -717,8 +727,8 @@ int cProtocol132::ParseItem(cItem & a_Item)
 		
 	// Read the metadata
 	AString Metadata;
-	Metadata.resize(MetadataLength);
-	if (!m_ReceivedData.ReadBuf((void *)Metadata.data(), MetadataLength))
+	Metadata.resize((size_t)MetadataLength);
+	if (!m_ReceivedData.ReadBuf((void *)Metadata.data(), (size_t)MetadataLength))
 	{
 		return PARSE_INCOMPLETE;
 	}
@@ -791,10 +801,12 @@ void cProtocol132::SendCompass(const cWorld & a_World)
 void cProtocol132::SendEncryptionKeyRequest(void)
 {
 	cCSLock Lock(m_CSPacket);
+	cServer * Server = cRoot::Get()->GetServer();
 	WriteByte(0xfd);
-	WriteString(cRoot::Get()->GetServer()->GetServerID());
-	WriteShort((short)(cRoot::Get()->GetServer()->GetPublicKeyDER().size()));
-	SendData(cRoot::Get()->GetServer()->GetPublicKeyDER().data(), cRoot::Get()->GetServer()->GetPublicKeyDER().size());
+	WriteString(Server->GetServerID());
+	const AString & PublicKeyDER = Server->GetPublicKeyDER();
+	WriteShort((short)(PublicKeyDER.size()));
+	SendData(PublicKeyDER.data(), PublicKeyDER.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();
@@ -865,10 +877,11 @@ void cProtocol132::StartEncryption(const Byte * a_Key)
 	
 	// Prepare the m_AuthServerID:
 	cSHA1Checksum Checksum;
-	AString ServerID = cRoot::Get()->GetServer()->GetServerID();
+	cServer * Server = cRoot::Get()->GetServer();
+	AString ServerID = Server->GetServerID();
 	Checksum.Update((const Byte *)ServerID.c_str(), ServerID.length());
 	Checksum.Update(a_Key, 16);
-	Checksum.Update((const Byte *)cRoot::Get()->GetServer()->GetPublicKeyDER().data(), cRoot::Get()->GetServer()->GetPublicKeyDER().size());
+	Checksum.Update((const Byte *)Server->GetPublicKeyDER().data(), Server->GetPublicKeyDER().size());
 	Byte Digest[20];
 	Checksum.Finalize(Digest);
 	cSHA1Checksum::DigestToJava(Digest, m_AuthServerID);
diff --git a/src/Protocol/Protocol132.h b/src/Protocol/Protocol132.h
index 0702fbf5a..b280c8a41 100644
--- a/src/Protocol/Protocol132.h
+++ b/src/Protocol/Protocol132.h
@@ -87,7 +87,7 @@ protected:
 	/// The ServerID used for session authentication; set in StartEncryption(), used in GetAuthServerID()
 	AString m_AuthServerID;
 	
-	virtual void SendData(const char * a_Data, int a_Size) override;
+	virtual void SendData(const char * a_Data, size_t a_Size) override;
 	
 	// DEBUG:
 	virtual void Flush(void) override;
diff --git a/src/Protocol/Protocol14x.cpp b/src/Protocol/Protocol14x.cpp
index 232b2718e..f60e756fd 100644
--- a/src/Protocol/Protocol14x.cpp
+++ b/src/Protocol/Protocol14x.cpp
@@ -103,9 +103,9 @@ void cProtocol142::SendPickupSpawn(const cPickup & a_Pickup)
 	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));
+	WriteChar((char)(a_Pickup.GetSpeedX() * 8));
+	WriteChar((char)(a_Pickup.GetSpeedY() * 8));
+	WriteChar((char)(a_Pickup.GetSpeedZ() * 8));
 	Flush();
 }
 
@@ -119,7 +119,7 @@ void cProtocol142::SendSoundParticleEffect(int a_EffectID, int a_SrcX, int a_Src
 	WriteByte(PACKET_SOUND_PARTICLE_EFFECT);
 	WriteInt (a_EffectID);
 	WriteInt (a_SrcX);
-	WriteByte(a_SrcY);
+	WriteByte((Byte)a_SrcY);
 	WriteInt (a_SrcZ);
 	WriteInt (a_Data);
 	WriteBool(0);
@@ -170,9 +170,9 @@ void cProtocol146::SendPickupSpawn(const cPickup & a_Pickup)
 	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));
+	WriteShort((short)(a_Pickup.GetSpeedX() * 32));
+	WriteShort((short)(a_Pickup.GetSpeedY() * 32));
+	WriteShort((short)(a_Pickup.GetSpeedZ() * 32));
 	WriteByte(0);
 	WriteByte(0);
 	
@@ -218,7 +218,7 @@ void cProtocol146::SendSpawnObject(const cEntity & a_Entity, char a_ObjectType,
 	cCSLock Lock(m_CSPacket);
 	WriteByte(PACKET_SPAWN_OBJECT);
 	WriteInt (a_Entity.GetUniqueID());
-	WriteByte(a_ObjectType);
+	WriteChar(a_ObjectType);
 	WriteInt ((int)(a_Entity.GetPosX() * 32));
 	WriteInt ((int)(a_Entity.GetPosY() * 32));
 	WriteInt ((int)(a_Entity.GetPosZ() * 32));
@@ -243,7 +243,7 @@ void cProtocol146::SendSpawnVehicle(const cEntity & a_Vehicle, char a_VehicleTyp
 	cCSLock Lock(m_CSPacket);
 	WriteByte (PACKET_SPAWN_OBJECT);
 	WriteInt  (a_Vehicle.GetUniqueID());
-	WriteByte (a_VehicleType);
+	WriteChar (a_VehicleType);
 	WriteInt  ((int)(a_Vehicle.GetPosX() * 32));
 	WriteInt  ((int)(a_Vehicle.GetPosY() * 32));
 	WriteInt  ((int)(a_Vehicle.GetPosZ() * 32));
diff --git a/src/Protocol/Protocol16x.cpp b/src/Protocol/Protocol16x.cpp
index ecb24254f..714bf5e46 100644
--- a/src/Protocol/Protocol16x.cpp
+++ b/src/Protocol/Protocol16x.cpp
@@ -18,6 +18,7 @@ Implements the 1.6.x protocol classes:
 #include "../Entities/Entity.h"
 #include "../Entities/Player.h"
 #include "../UI/Window.h"
+#include "../CompositeChat.h"
 
 
 
@@ -89,6 +90,18 @@ void cProtocol161::SendChat(const AString & a_Message)
 
 
 
+void cProtocol161::SendChat(const cCompositeChat & a_Message)
+{
+	// This protocol version doesn't support composite messages to the full
+	// Just extract each part's text and use it:
+	
+	super::SendChat(Printf("{\"text\":\"%s\"}", EscapeString(a_Message.ExtractText()).c_str()));
+}
+
+
+
+
+
 void cProtocol161::SendEditSign(int a_BlockX, int a_BlockY, int a_BlockZ)
 {
 	cCSLock Lock(m_CSPacket);
@@ -118,9 +131,10 @@ 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());
+	cPlayer * Player = m_Client->GetPlayer();
+	WriteFloat((float)Player->GetHealth());
+	WriteShort((short)Player->GetFoodLevel());
+	WriteFloat((float)Player->GetFoodSaturationLevel());
 	Flush();
 }
 
@@ -131,11 +145,12 @@ void cProtocol161::SendHealth(void)
 void cProtocol161::SendPlayerMaxSpeed(void)
 {
 	cCSLock Lock(m_CSPacket);
+	cPlayer * Player = m_Client->GetPlayer();
 	WriteByte(PACKET_ENTITY_PROPERTIES);
-	WriteInt(m_Client->GetPlayer()->GetUniqueID());
+	WriteInt(Player->GetUniqueID());
 	WriteInt(1);
 	WriteString("generic.movementSpeed");
-	WriteDouble(0.1 * m_Client->GetPlayer()->GetMaxSpeed());
+	WriteDouble(0.1 * Player->GetMaxSpeed());
 	Flush();
 }
 
@@ -163,10 +178,10 @@ void cProtocol161::SendWindowOpen(const cWindow & a_Window)
 	}
 	cCSLock Lock(m_CSPacket);
 	WriteByte  (PACKET_WINDOW_OPEN);
-	WriteByte  (a_Window.GetWindowID());
-	WriteByte  (a_Window.GetWindowType());
+	WriteChar  (a_Window.GetWindowID());
+	WriteByte  ((Byte)a_Window.GetWindowType());
 	WriteString(a_Window.GetWindowTitle());
-	WriteByte  (a_Window.GetNumNonInventorySlots());
+	WriteByte  ((Byte)a_Window.GetNumNonInventorySlots());
 	WriteByte  (1);  // Use title
 	if (a_Window.GetWindowType() == cWindow::wtAnimalChest)
 	{
@@ -201,6 +216,25 @@ int cProtocol161::ParseEntityAction(void)
 
 
 
+int cProtocol161::ParseLogin(void)
+{
+	// The login packet is sent by Forge clients only
+	// Only parse the packet, do no extra processing
+	// Note that the types and the names have been only guessed and are not verified at all!
+	HANDLE_PACKET_READ(ReadBEInt, int, Int1);
+	HANDLE_PACKET_READ(ReadBEUTF16String16, AString, String1);
+	HANDLE_PACKET_READ(ReadChar, char, Char1);
+	HANDLE_PACKET_READ(ReadChar, char, Char2);
+	HANDLE_PACKET_READ(ReadChar, char, Char3);
+	HANDLE_PACKET_READ(ReadByte, Byte, Byte1);
+	HANDLE_PACKET_READ(ReadByte, Byte, Byte2);
+	return PARSE_OK;
+}
+
+
+
+
+
 int cProtocol161::ParsePlayerAbilities(void)
 {
 	HANDLE_PACKET_READ(ReadByte,    Byte,  Flags);
@@ -263,11 +297,12 @@ cProtocol162::cProtocol162(cClientHandle * a_Client) :
 void cProtocol162::SendPlayerMaxSpeed(void)
 {
 	cCSLock Lock(m_CSPacket);
+	cPlayer * Player = m_Client->GetPlayer();
 	WriteByte(PACKET_ENTITY_PROPERTIES);
-	WriteInt(m_Client->GetPlayer()->GetUniqueID());
+	WriteInt(Player->GetUniqueID());
 	WriteInt(1);
 	WriteString("generic.movementSpeed");
-	WriteDouble(0.1 * m_Client->GetPlayer()->GetMaxSpeed());
+	WriteDouble(0.1 * Player->GetMaxSpeed());
 	WriteShort(0);
 	Flush();
 }
diff --git a/src/Protocol/Protocol16x.h b/src/Protocol/Protocol16x.h
index 325e41c5a..8eedce8d5 100644
--- a/src/Protocol/Protocol16x.h
+++ b/src/Protocol/Protocol16x.h
@@ -37,6 +37,7 @@ 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 SendChat          (const cCompositeChat & 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;
@@ -45,6 +46,7 @@ protected:
 	virtual void SendWindowOpen    (const cWindow & a_Window) override;
 	
 	virtual int ParseEntityAction   (void) override;
+	virtual int ParseLogin          (void) override;
 	virtual int ParsePlayerAbilities(void) override;
 	
 	// New packets:
diff --git a/src/Protocol/Protocol17x.cpp b/src/Protocol/Protocol17x.cpp
index c678fc9a0..e57b551cb 100644
--- a/src/Protocol/Protocol17x.cpp
+++ b/src/Protocol/Protocol17x.cpp
@@ -88,8 +88,9 @@ cProtocol172::cProtocol172(cClientHandle * a_Client, const AString & a_ServerAdd
 	// Create the comm log file, if so requested:
 	if (g_ShouldLogCommIn || g_ShouldLogCommOut)
 	{
+		static int sCounter = 0;
 		cFile::CreateFolder("CommLogs");
-		AString FileName = Printf("CommLogs/%x__%s.log", (unsigned)time(NULL), a_Client->GetIPString().c_str());
+		AString FileName = Printf("CommLogs/%x_%d__%s.log", (unsigned)time(NULL), sCounter++, a_Client->GetIPString().c_str());
 		m_CommLogFile.Open(FileName, cFile::fmWrite);
 	}
 }
@@ -124,6 +125,8 @@ void cProtocol172::DataReceived(const char * a_Data, size_t a_Size)
 
 void cProtocol172::SendAttachEntity(const cEntity & a_Entity, const cEntity * a_Vehicle)
 {
+	ASSERT(m_State == 3);  // In game mode?
+	
 	cPacketizer Pkt(*this, 0x1b);  // Attach Entity packet
 	Pkt.WriteInt(a_Entity.GetUniqueID());
 	Pkt.WriteInt((a_Vehicle != NULL) ? a_Vehicle->GetUniqueID() : 0);
@@ -136,6 +139,8 @@ void cProtocol172::SendAttachEntity(const cEntity & a_Entity, const cEntity * a_
 
 void cProtocol172::SendBlockAction(int a_BlockX, int a_BlockY, int a_BlockZ, char a_Byte1, char a_Byte2, BLOCKTYPE a_BlockType)
 {
+	ASSERT(m_State == 3);  // In game mode?
+	
 	cPacketizer Pkt(*this, 0x24);  // Block Action packet
 	Pkt.WriteInt(a_BlockX);
 	Pkt.WriteShort(a_BlockY);
@@ -151,6 +156,8 @@ void cProtocol172::SendBlockAction(int a_BlockX, int a_BlockY, int a_BlockZ, cha
 
 void cProtocol172::SendBlockBreakAnim(int a_EntityID, int a_BlockX, int a_BlockY, int a_BlockZ, char a_Stage)
 {
+	ASSERT(m_State == 3);  // In game mode?
+	
 	cPacketizer Pkt(*this, 0x25);  // Block Break Animation packet
 	Pkt.WriteVarInt(a_EntityID);
 	Pkt.WriteInt(a_BlockX);
@@ -165,6 +172,8 @@ void cProtocol172::SendBlockBreakAnim(int a_EntityID, int a_BlockX, int a_BlockY
 
 void cProtocol172::SendBlockChange(int a_BlockX, int a_BlockY, int a_BlockZ, BLOCKTYPE a_BlockType, NIBBLETYPE a_BlockMeta)
 {
+	ASSERT(m_State == 3);  // In game mode?
+	
 	cPacketizer Pkt(*this, 0x23);  // Block Change packet
 	Pkt.WriteInt(a_BlockX);
 	Pkt.WriteByte(a_BlockY);
@@ -179,6 +188,8 @@ void cProtocol172::SendBlockChange(int a_BlockX, int a_BlockY, int a_BlockZ, BLO
 
 void cProtocol172::SendBlockChanges(int a_ChunkX, int a_ChunkZ, const sSetBlockVector & a_Changes)
 {
+	ASSERT(m_State == 3);  // In game mode?
+	
 	cPacketizer Pkt(*this, 0x22);  // Multi Block Change packet
 	Pkt.WriteInt(a_ChunkX);
 	Pkt.WriteInt(a_ChunkZ);
@@ -198,6 +209,8 @@ void cProtocol172::SendBlockChanges(int a_ChunkX, int a_ChunkZ, const sSetBlockV
 
 void cProtocol172::SendChat(const AString & a_Message)
 {
+	ASSERT(m_State == 3);  // In game mode?
+	
 	cPacketizer Pkt(*this, 0x02);  // Chat Message packet
 	Pkt.WriteString(Printf("{\"text\":\"%s\"}", EscapeString(a_Message).c_str()));
 }
@@ -208,6 +221,8 @@ void cProtocol172::SendChat(const AString & a_Message)
 
 void cProtocol172::SendChat(const cCompositeChat & a_Message)
 {
+	ASSERT(m_State == 3);  // In game mode?
+	
 	// Compose the complete Json string to send:
 	Json::Value msg;
 	msg["text"] = "";  // The client crashes without this
@@ -280,6 +295,8 @@ void cProtocol172::SendChat(const cCompositeChat & a_Message)
 
 void cProtocol172::SendChunkData(int a_ChunkX, int a_ChunkZ, cChunkDataSerializer & a_Serializer)
 {
+	ASSERT(m_State == 3);  // In game mode?
+	
 	// Serialize first, before creating the Packetizer (the packetizer locks a CS)
 	// This contains the flags and bitmasks, too
 	const AString & ChunkData = a_Serializer.Serialize(cChunkDataSerializer::RELEASE_1_3_2);
@@ -296,6 +313,8 @@ void cProtocol172::SendChunkData(int a_ChunkX, int a_ChunkZ, cChunkDataSerialize
 
 void cProtocol172::SendCollectPickup(const cPickup & a_Pickup, const cPlayer & a_Player)
 {
+	ASSERT(m_State == 3);  // In game mode?
+	
 	cPacketizer Pkt(*this, 0x0d);  // Collect Item packet
 	Pkt.WriteInt(a_Pickup.GetUniqueID());
 	Pkt.WriteInt(a_Player.GetUniqueID());
@@ -307,6 +326,8 @@ void cProtocol172::SendCollectPickup(const cPickup & a_Pickup, const cPlayer & a
 
 void cProtocol172::SendDestroyEntity(const cEntity & a_Entity)
 {
+	ASSERT(m_State == 3);  // In game mode?
+	
 	cPacketizer Pkt(*this, 0x13);  // Destroy Entities packet
 	Pkt.WriteByte(1);
 	Pkt.WriteInt(a_Entity.GetUniqueID());
@@ -343,6 +364,8 @@ void cProtocol172::SendDisconnect(const AString & a_Reason)
 
 void cProtocol172::SendEditSign(int a_BlockX, int a_BlockY, int a_BlockZ)
 {
+	ASSERT(m_State == 3);  // In game mode?
+	
 	cPacketizer Pkt(*this, 0x36);  // Sign Editor Open packet
 	Pkt.WriteInt(a_BlockX);
 	Pkt.WriteInt(a_BlockY);
@@ -355,6 +378,8 @@ void cProtocol172::SendEditSign(int a_BlockX, int a_BlockY, int a_BlockZ)
 
 void cProtocol172::SendEntityEffect(const cEntity & a_Entity, int a_EffectID, int a_Amplifier, short a_Duration)
 {
+	ASSERT(m_State == 3);  // In game mode?
+	
 	cPacketizer Pkt(*this, 0x1D);  // Entity Effect packet
 	Pkt.WriteInt(a_Entity.GetUniqueID());
 	Pkt.WriteByte(a_EffectID);
@@ -368,6 +393,8 @@ void cProtocol172::SendEntityEffect(const cEntity & a_Entity, int a_EffectID, in
 
 void cProtocol172::SendEntityEquipment(const cEntity & a_Entity, short a_SlotNum, const cItem & a_Item)
 {
+	ASSERT(m_State == 3);  // In game mode?
+	
 	cPacketizer Pkt(*this, 0x04);  // Entity Equipment packet
 	Pkt.WriteInt(a_Entity.GetUniqueID());
 	Pkt.WriteShort(a_SlotNum);
@@ -380,6 +407,8 @@ void cProtocol172::SendEntityEquipment(const cEntity & a_Entity, short a_SlotNum
 
 void cProtocol172::SendEntityHeadLook(const cEntity & a_Entity)
 {
+	ASSERT(m_State == 3);  // In game mode?
+	
 	cPacketizer Pkt(*this, 0x19);  // Entity Head Look packet
 	Pkt.WriteInt(a_Entity.GetUniqueID());
 	Pkt.WriteByteAngle(a_Entity.GetHeadYaw());
@@ -391,6 +420,8 @@ void cProtocol172::SendEntityHeadLook(const cEntity & a_Entity)
 
 void cProtocol172::SendEntityLook(const cEntity & a_Entity)
 {
+	ASSERT(m_State == 3);  // In game mode?
+	
 	cPacketizer Pkt(*this, 0x16);  // Entity Look packet
 	Pkt.WriteInt(a_Entity.GetUniqueID());
 	Pkt.WriteByteAngle(a_Entity.GetYaw());
@@ -403,6 +434,8 @@ void cProtocol172::SendEntityLook(const cEntity & a_Entity)
 
 void cProtocol172::SendEntityMetadata(const cEntity & a_Entity)
 {
+	ASSERT(m_State == 3);  // In game mode?
+	
 	cPacketizer Pkt(*this, 0x1c);  // Entity Metadata packet
 	Pkt.WriteInt(a_Entity.GetUniqueID());
 	Pkt.WriteEntityMetadata(a_Entity);
@@ -415,6 +448,8 @@ void cProtocol172::SendEntityMetadata(const cEntity & a_Entity)
 
 void cProtocol172::SendEntityProperties(const cEntity & a_Entity)
 {
+	ASSERT(m_State == 3);  // In game mode?
+	
 	cPacketizer Pkt(*this, 0x20);  // Entity Properties packet
 	Pkt.WriteInt(a_Entity.GetUniqueID());
 	Pkt.WriteEntityProperties(a_Entity);
@@ -426,6 +461,8 @@ void cProtocol172::SendEntityProperties(const cEntity & a_Entity)
 
 void cProtocol172::SendEntityRelMove(const cEntity & a_Entity, char a_RelX, char a_RelY, char a_RelZ)
 {
+	ASSERT(m_State == 3);  // In game mode?
+	
 	cPacketizer Pkt(*this, 0x15);  // Entity Relative Move packet
 	Pkt.WriteInt(a_Entity.GetUniqueID());
 	Pkt.WriteByte(a_RelX);
@@ -439,6 +476,8 @@ void cProtocol172::SendEntityRelMove(const cEntity & a_Entity, char a_RelX, char
 
 void cProtocol172::SendEntityRelMoveLook(const cEntity & a_Entity, char a_RelX, char a_RelY, char a_RelZ)
 {
+	ASSERT(m_State == 3);  // In game mode?
+	
 	cPacketizer Pkt(*this, 0x17);  // Entity Look And Relative Move packet
 	Pkt.WriteInt(a_Entity.GetUniqueID());
 	Pkt.WriteByte(a_RelX);
@@ -454,6 +493,8 @@ void cProtocol172::SendEntityRelMoveLook(const cEntity & a_Entity, char a_RelX,
 
 void cProtocol172::SendEntityStatus(const cEntity & a_Entity, char a_Status)
 {
+	ASSERT(m_State == 3);  // In game mode?
+	
 	cPacketizer Pkt(*this, 0x1a);  // Entity Status packet
 	Pkt.WriteInt(a_Entity.GetUniqueID());
 	Pkt.WriteChar(a_Status);
@@ -465,6 +506,8 @@ void cProtocol172::SendEntityStatus(const cEntity & a_Entity, char a_Status)
 
 void cProtocol172::SendEntityVelocity(const cEntity & a_Entity)
 {
+	ASSERT(m_State == 3);  // In game mode?
+	
 	cPacketizer Pkt(*this, 0x12);  // Entity Velocity packet
 	Pkt.WriteInt(a_Entity.GetUniqueID());
 	// 400 = 8000 / 20 ... Conversion from our speed in m/s to 8000 m/tick
@@ -479,6 +522,8 @@ void cProtocol172::SendEntityVelocity(const cEntity & a_Entity)
 
 void cProtocol172::SendExplosion(double a_BlockX, double a_BlockY, double a_BlockZ, float a_Radius, const cVector3iArray & a_BlocksAffected, const Vector3d & a_PlayerMotion)
 {
+	ASSERT(m_State == 3);  // In game mode?
+	
 	cPacketizer Pkt(*this, 0x27);  // Explosion packet
 	Pkt.WriteFloat((float)a_BlockX);
 	Pkt.WriteFloat((float)a_BlockY);
@@ -502,6 +547,8 @@ void cProtocol172::SendExplosion(double a_BlockX, double a_BlockY, double a_Bloc
 
 void cProtocol172::SendGameMode(eGameMode a_GameMode)
 {
+	ASSERT(m_State == 3);  // In game mode?
+	
 	cPacketizer Pkt(*this, 0x2b);  // Change Game State packet
 	Pkt.WriteByte(3);  // Reason: Change game mode
 	Pkt.WriteFloat((float)a_GameMode);
@@ -513,10 +560,13 @@ void cProtocol172::SendGameMode(eGameMode a_GameMode)
 
 void cProtocol172::SendHealth(void)
 {
+	ASSERT(m_State == 3);  // In game mode?
+	
 	cPacketizer Pkt(*this, 0x06);  // Update Health packet
-	Pkt.WriteFloat((float)m_Client->GetPlayer()->GetHealth());
-	Pkt.WriteShort(m_Client->GetPlayer()->GetFoodLevel());
-	Pkt.WriteFloat((float)m_Client->GetPlayer()->GetFoodSaturationLevel());
+	cPlayer * Player = m_Client->GetPlayer();
+	Pkt.WriteFloat((float)Player->GetHealth());
+	Pkt.WriteShort(Player->GetFoodLevel());
+	Pkt.WriteFloat((float)Player->GetFoodSaturationLevel());
 }
 
 
@@ -525,6 +575,8 @@ void cProtocol172::SendHealth(void)
 
 void cProtocol172::SendInventorySlot(char a_WindowID, short a_SlotNum, const cItem & a_Item)
 {
+	ASSERT(m_State == 3);  // In game mode?
+	
 	cPacketizer Pkt(*this, 0x2f);  // Set Slot packet
 	Pkt.WriteChar(a_WindowID);
 	Pkt.WriteShort(a_SlotNum);
@@ -537,6 +589,13 @@ void cProtocol172::SendInventorySlot(char a_WindowID, short a_SlotNum, const cIt
 
 void cProtocol172::SendKeepAlive(int a_PingID)
 {
+	// Drop the packet if the protocol is not in the Game state yet (caused a client crash):
+	if (m_State != 3)
+	{
+		LOGWARNING("Trying to send a KeepAlive packet to a player who's not yet fully logged in (%d). The protocol class prevented the packet.", m_State);
+		return;
+	}
+	
 	cPacketizer Pkt(*this, 0x00);  // Keep Alive packet
 	Pkt.WriteInt(a_PingID);
 }
@@ -549,12 +608,13 @@ void cProtocol172::SendLogin(const cPlayer & a_Player, const cWorld & a_World)
 {
 	// Send the Join Game packet:
 	{
+		cServer * Server = cRoot::Get()->GetServer();
 		cPacketizer Pkt(*this, 0x01);  // Join Game packet
 		Pkt.WriteInt(a_Player.GetUniqueID());
-		Pkt.WriteByte((Byte)a_Player.GetEffectiveGameMode() | (cRoot::Get()->GetServer()->IsHardcore() ? 0x08 : 0)); // Hardcore flag bit 4
+		Pkt.WriteByte((Byte)a_Player.GetEffectiveGameMode() | (Server->IsHardcore() ? 0x08 : 0)); // Hardcore flag bit 4
 		Pkt.WriteChar((char)a_World.GetDimension());
 		Pkt.WriteByte(2);  // TODO: Difficulty (set to Normal)
-		Pkt.WriteByte(std::min(cRoot::Get()->GetServer()->GetMaxPlayers(), 60));
+		Pkt.WriteByte(std::min(Server->GetMaxPlayers(), 60));
 		Pkt.WriteString("default");  // Level type - wtf?
 	}
 	
@@ -573,8 +633,25 @@ void cProtocol172::SendLogin(const cPlayer & a_Player, const cWorld & a_World)
 
 
 
+void cProtocol172::SendLoginSuccess(void)
+{
+	ASSERT(m_State == 2);  // State: login?
+	
+	cPacketizer Pkt(*this, 0x02);  // Login success packet
+	Pkt.WriteString(m_Client->GetUUID());
+	Pkt.WriteString(m_Client->GetUsername());
+
+	m_State = 3;  // State = Game
+}
+
+
+
+
+
 void cProtocol172::SendPaintingSpawn(const cPainting & a_Painting)
 {
+	ASSERT(m_State == 3);  // In game mode?
+	
 	cPacketizer Pkt(*this, 0x10);  // Spawn Painting packet
 	Pkt.WriteVarInt(a_Painting.GetUniqueID());
 	Pkt.WriteString(a_Painting.GetName().c_str());
@@ -590,6 +667,8 @@ void cProtocol172::SendPaintingSpawn(const cPainting & a_Painting)
 
 void cProtocol172::SendMapColumn(int a_ID, int a_X, int a_Y, const Byte * a_Colors, unsigned int a_Length)
 {
+	ASSERT(m_State == 3);  // In game mode?
+	
 	cPacketizer Pkt(*this, 0x34);
 	Pkt.WriteVarInt(a_ID);
 	Pkt.WriteShort (3 + a_Length);
@@ -610,6 +689,8 @@ void cProtocol172::SendMapColumn(int a_ID, int a_X, int a_Y, const Byte * a_Colo
 
 void cProtocol172::SendMapDecorators(int a_ID, const cMapDecoratorList & a_Decorators)
 {
+	ASSERT(m_State == 3);  // In game mode?
+	
 	cPacketizer Pkt(*this, 0x34);
 	Pkt.WriteVarInt(a_ID);
 	Pkt.WriteShort (1 + (3 * a_Decorators.size()));
@@ -630,6 +711,8 @@ void cProtocol172::SendMapDecorators(int a_ID, const cMapDecoratorList & a_Decor
 
 void cProtocol172::SendMapInfo(int a_ID, unsigned int a_Scale)
 {
+	ASSERT(m_State == 3);  // In game mode?
+	
 	cPacketizer Pkt(*this, 0x34);
 	Pkt.WriteVarInt(a_ID);
 	Pkt.WriteShort (2);
@@ -645,6 +728,8 @@ void cProtocol172::SendMapInfo(int a_ID, unsigned int a_Scale)
 
 void cProtocol172::SendPickupSpawn(const cPickup & a_Pickup)
 {
+	ASSERT(m_State == 3);  // In game mode?
+	
 	{
 		cPacketizer Pkt(*this, 0x0e);  // Spawn Object packet
 		Pkt.WriteVarInt(a_Pickup.GetUniqueID());
@@ -671,24 +756,27 @@ void cProtocol172::SendPickupSpawn(const cPickup & a_Pickup)
 
 void cProtocol172::SendPlayerAbilities(void)
 {
+	ASSERT(m_State == 3);  // In game mode?
+	
 	cPacketizer Pkt(*this, 0x39);  // Player Abilities packet
 	Byte Flags = 0;
-	if (m_Client->GetPlayer()->IsGameModeCreative())
+	cPlayer * Player = m_Client->GetPlayer();
+	if (Player->IsGameModeCreative())
 	{
 		Flags |= 0x01;
 		Flags |= 0x08; // Godmode, used for creative
 	}
-	if (m_Client->GetPlayer()->IsFlying())
+	if (Player->IsFlying())
 	{
 		Flags |= 0x02;
 	}
-	if (m_Client->GetPlayer()->CanFly())
+	if (Player->CanFly())
 	{
 		Flags |= 0x04;
 	}
 	Pkt.WriteByte(Flags);
-	Pkt.WriteFloat((float)(0.05 * m_Client->GetPlayer()->GetFlyingMaxSpeed()));
-	Pkt.WriteFloat((float)(0.1 * m_Client->GetPlayer()->GetMaxSpeed()));
+	Pkt.WriteFloat((float)(0.05 * Player->GetFlyingMaxSpeed()));
+	Pkt.WriteFloat((float)(0.1 * Player->GetMaxSpeed()));
 }
 
 
@@ -697,6 +785,8 @@ void cProtocol172::SendPlayerAbilities(void)
 
 void cProtocol172::SendEntityAnimation(const cEntity & a_Entity, char a_Animation)
 {
+	ASSERT(m_State == 3);  // In game mode?
+	
 	cPacketizer Pkt(*this, 0x0b);  // Animation packet
 	Pkt.WriteVarInt(a_Entity.GetUniqueID());
 	Pkt.WriteChar(a_Animation);
@@ -708,6 +798,8 @@ void cProtocol172::SendEntityAnimation(const cEntity & a_Entity, char a_Animatio
 
 void cProtocol172::SendParticleEffect(const AString & a_ParticleName, float a_SrcX, float a_SrcY, float a_SrcZ, float a_OffsetX, float a_OffsetY, float a_OffsetZ, float a_ParticleData, int a_ParticleAmmount)
 {
+	ASSERT(m_State == 3);  // In game mode?
+	
 	cPacketizer Pkt(*this, 0x2A);
 	Pkt.WriteString(a_ParticleName);
 	Pkt.WriteFloat(a_SrcX);
@@ -726,6 +818,8 @@ void cProtocol172::SendParticleEffect(const AString & a_ParticleName, float a_Sr
 
 void cProtocol172::SendPlayerListItem(const cPlayer & a_Player, bool a_IsOnline)
 {
+	ASSERT(m_State == 3);  // In game mode?
+	
 	cPacketizer Pkt(*this, 0x38);  // Playerlist Item packet
 	Pkt.WriteString(a_Player.GetName());
 	Pkt.WriteBool(a_IsOnline);
@@ -738,18 +832,21 @@ void cProtocol172::SendPlayerListItem(const cPlayer & a_Player, bool a_IsOnline)
 
 void cProtocol172::SendPlayerMaxSpeed(void)
 {
+	ASSERT(m_State == 3);  // In game mode?
+	
 	cPacketizer Pkt(*this, 0x20);  // Entity Properties
-	Pkt.WriteInt(m_Client->GetPlayer()->GetUniqueID());
+	cPlayer * Player = m_Client->GetPlayer();
+	Pkt.WriteInt(Player->GetUniqueID());
 	Pkt.WriteInt(1);  // Count
 	Pkt.WriteString("generic.movementSpeed");
 	// The default game speed is 0.1, multiply that value by the relative speed:
-	Pkt.WriteDouble(0.1 * m_Client->GetPlayer()->GetNormalMaxSpeed());
-	if (m_Client->GetPlayer()->IsSprinting())
+	Pkt.WriteDouble(0.1 * Player->GetNormalMaxSpeed());
+	if (Player->IsSprinting())
 	{
 		Pkt.WriteShort(1);  // Modifier count
 		Pkt.WriteInt64(0x662a6b8dda3e4c1c);
 		Pkt.WriteInt64(0x881396ea6097278d);  // UUID of the modifier
-		Pkt.WriteDouble(m_Client->GetPlayer()->GetSprintingMaxSpeed() - m_Client->GetPlayer()->GetNormalMaxSpeed());
+		Pkt.WriteDouble(Player->GetSprintingMaxSpeed() - Player->GetNormalMaxSpeed());
 		Pkt.WriteByte(2);
 	}
 	else
@@ -764,17 +861,20 @@ void cProtocol172::SendPlayerMaxSpeed(void)
 
 void cProtocol172::SendPlayerMoveLook(void)
 {
+	ASSERT(m_State == 3);  // In game mode?
+	
 	cPacketizer Pkt(*this, 0x08);  // Player Position And Look packet
-	Pkt.WriteDouble(m_Client->GetPlayer()->GetPosX());
+	cPlayer * Player = m_Client->GetPlayer();
+	Pkt.WriteDouble(Player->GetPosX());
 	
 	// Protocol docs say this is PosY, but #323 says this is eye-pos
 	// Moreover, the "+ 0.001" is there because otherwise the player falls through the block they were standing on.
-	Pkt.WriteDouble(m_Client->GetPlayer()->GetStance() + 0.001);
+	Pkt.WriteDouble(Player->GetStance() + 0.001);
 	
-	Pkt.WriteDouble(m_Client->GetPlayer()->GetPosZ());
-	Pkt.WriteFloat((float)m_Client->GetPlayer()->GetYaw());
-	Pkt.WriteFloat((float)m_Client->GetPlayer()->GetPitch());
-	Pkt.WriteBool(m_Client->GetPlayer()->IsOnGround());
+	Pkt.WriteDouble(Player->GetPosZ());
+	Pkt.WriteFloat((float)Player->GetYaw());
+	Pkt.WriteFloat((float)Player->GetPitch());
+	Pkt.WriteBool(Player->IsOnGround());
 }
 
 
@@ -793,10 +893,12 @@ void cProtocol172::SendPlayerPosition(void)
 
 void cProtocol172::SendPlayerSpawn(const cPlayer & a_Player)
 {
+	ASSERT(m_State == 3);  // In game mode?
+	
 	// Called to spawn another player for the client
 	cPacketizer Pkt(*this, 0x0c);  // Spawn Player packet
 	Pkt.WriteVarInt(a_Player.GetUniqueID());
-	Pkt.WriteString(Printf("%d", a_Player.GetUniqueID()));  // TODO: Proper UUID
+	Pkt.WriteString(a_Player.GetClientHandle()->GetUUID());
 	Pkt.WriteString(a_Player.GetName());
 	Pkt.WriteFPInt(a_Player.GetPosX());
 	Pkt.WriteFPInt(a_Player.GetPosY());
@@ -816,6 +918,8 @@ void cProtocol172::SendPlayerSpawn(const cPlayer & a_Player)
 
 void cProtocol172::SendPluginMessage(const AString & a_Channel, const AString & a_Message)
 {
+	ASSERT(m_State == 3);  // In game mode?
+	
 	cPacketizer Pkt(*this, 0x3f);
 	Pkt.WriteString(a_Channel);
 	Pkt.WriteShort((short)a_Message.size());
@@ -828,7 +932,9 @@ void cProtocol172::SendPluginMessage(const AString & a_Channel, const AString &
 
 void cProtocol172::SendRemoveEntityEffect(const cEntity & a_Entity, int a_EffectID)
 {
-	cPacketizer Pkt(*this, 0x1E);
+	ASSERT(m_State == 3);  // In game mode?
+	
+	cPacketizer Pkt(*this, 0x1e);
 	Pkt.WriteInt(a_Entity.GetUniqueID());
 	Pkt.WriteByte(a_EffectID);
 }
@@ -840,9 +946,10 @@ void cProtocol172::SendRemoveEntityEffect(const cEntity & a_Entity, int a_Effect
 void cProtocol172::SendRespawn(void)
 {
 	cPacketizer Pkt(*this, 0x07);  // Respawn packet
-	Pkt.WriteInt(m_Client->GetPlayer()->GetWorld()->GetDimension());
+	cPlayer * Player = m_Client->GetPlayer();
+	Pkt.WriteInt(Player->GetWorld()->GetDimension());
 	Pkt.WriteByte(2);  // TODO: Difficulty (set to Normal)
-	Pkt.WriteByte((Byte)m_Client->GetPlayer()->GetEffectiveGameMode());
+	Pkt.WriteByte((Byte)Player->GetEffectiveGameMode());
 	Pkt.WriteString("default");
 }
 
@@ -852,10 +959,13 @@ void cProtocol172::SendRespawn(void)
 
 void cProtocol172::SendExperience (void)
 {
-	cPacketizer Pkt(*this, 0x1F); //Experience Packet
-	Pkt.WriteFloat(m_Client->GetPlayer()->GetXpPercentage());
-	Pkt.WriteShort(m_Client->GetPlayer()->GetXpLevel());
-	Pkt.WriteShort(m_Client->GetPlayer()->GetCurrentXp());
+	ASSERT(m_State == 3);  // In game mode?
+	
+	cPacketizer Pkt(*this, 0x1f);  // Experience Packet
+	cPlayer * Player = m_Client->GetPlayer();
+	Pkt.WriteFloat(Player->GetXpPercentage());
+	Pkt.WriteShort(Player->GetXpLevel());
+	Pkt.WriteShort(Player->GetCurrentXp());
 }
 
 
@@ -864,6 +974,8 @@ void cProtocol172::SendExperience (void)
 
 void cProtocol172::SendExperienceOrb(const cExpOrb & a_ExpOrb)
 {
+	ASSERT(m_State == 3);  // In game mode?
+	
 	cPacketizer Pkt(*this, 0x11);	
 	Pkt.WriteVarInt(a_ExpOrb.GetUniqueID());
 	Pkt.WriteInt((int) a_ExpOrb.GetPosX());
@@ -878,7 +990,9 @@ void cProtocol172::SendExperienceOrb(const cExpOrb & a_ExpOrb)
 
 void cProtocol172::SendScoreboardObjective(const AString & a_Name, const AString & a_DisplayName, Byte a_Mode)
 {
-	cPacketizer Pkt(*this, 0x3B);
+	ASSERT(m_State == 3);  // In game mode?
+	
+	cPacketizer Pkt(*this, 0x3b);
 	Pkt.WriteString(a_Name);
 	Pkt.WriteString(a_DisplayName);
 	Pkt.WriteByte(a_Mode);
@@ -890,7 +1004,9 @@ void cProtocol172::SendScoreboardObjective(const AString & a_Name, const AString
 
 void cProtocol172::SendScoreUpdate(const AString & a_Objective, const AString & a_Player, cObjective::Score a_Score, Byte a_Mode)
 {
-	cPacketizer Pkt(*this, 0x3C);
+	ASSERT(m_State == 3);  // In game mode?
+	
+	cPacketizer Pkt(*this, 0x3c);
 	Pkt.WriteString(a_Player);
 	Pkt.WriteByte(a_Mode);
 
@@ -907,7 +1023,9 @@ void cProtocol172::SendScoreUpdate(const AString & a_Objective, const AString &
 
 void cProtocol172::SendDisplayObjective(const AString & a_Objective, cScoreboard::eDisplaySlot a_Display)
 {
-	cPacketizer Pkt(*this, 0x3D);
+	ASSERT(m_State == 3);  // In game mode?
+	
+	cPacketizer Pkt(*this, 0x3d);
 	Pkt.WriteByte((int) a_Display);
 	Pkt.WriteString(a_Objective);
 }
@@ -918,6 +1036,8 @@ void cProtocol172::SendDisplayObjective(const AString & a_Objective, cScoreboard
 
 void cProtocol172::SendSoundEffect(const AString & a_SoundName, int a_SrcX, int a_SrcY, int a_SrcZ, float a_Volume, float a_Pitch)  // a_Src coords are Block * 8
 {
+	ASSERT(m_State == 3);  // In game mode?
+	
 	cPacketizer Pkt(*this, 0x29);  // Sound Effect packet
 	Pkt.WriteString(a_SoundName);
 	Pkt.WriteInt(a_SrcX);
@@ -933,6 +1053,8 @@ void cProtocol172::SendSoundEffect(const AString & a_SoundName, int a_SrcX, int
 
 void cProtocol172::SendSoundParticleEffect(int a_EffectID, int a_SrcX, int a_SrcY, int a_SrcZ, int a_Data)
 {
+	ASSERT(m_State == 3);  // In game mode?
+	
 	cPacketizer Pkt(*this, 0x28);  // Effect packet
 	Pkt.WriteInt(a_EffectID);
 	Pkt.WriteInt(a_SrcX);
@@ -948,6 +1070,8 @@ void cProtocol172::SendSoundParticleEffect(int a_EffectID, int a_SrcX, int a_Src
 
 void cProtocol172::SendSpawnFallingBlock(const cFallingBlock & a_FallingBlock)
 {
+	ASSERT(m_State == 3);  // In game mode?
+	
 	cPacketizer Pkt(*this, 0x0e);  // Spawn Object packet
 	Pkt.WriteVarInt(a_FallingBlock.GetUniqueID());
 	Pkt.WriteByte(70);  // Falling block
@@ -968,6 +1092,8 @@ void cProtocol172::SendSpawnFallingBlock(const cFallingBlock & a_FallingBlock)
 
 void cProtocol172::SendSpawnMob(const cMonster & a_Mob)
 {
+	ASSERT(m_State == 3);  // In game mode?
+	
 	cPacketizer Pkt(*this, 0x0f);  // Spawn Mob packet
 	Pkt.WriteVarInt(a_Mob.GetUniqueID());
 	Pkt.WriteByte((Byte)a_Mob.GetMobType());
@@ -990,6 +1116,8 @@ void cProtocol172::SendSpawnMob(const cMonster & a_Mob)
 
 void cProtocol172::SendSpawnObject(const cEntity & a_Entity, char a_ObjectType, int a_ObjectData, Byte a_Yaw, Byte a_Pitch)
 {
+	ASSERT(m_State == 3);  // In game mode?
+	
 	cPacketizer Pkt(*this, 0xe);  // Spawn Object packet
 	Pkt.WriteVarInt(a_Entity.GetUniqueID());
 	Pkt.WriteByte(a_ObjectType);
@@ -1013,6 +1141,8 @@ void cProtocol172::SendSpawnObject(const cEntity & a_Entity, char a_ObjectType,
 
 void cProtocol172::SendSpawnVehicle(const cEntity & a_Vehicle, char a_VehicleType, char a_VehicleSubType)
 {
+	ASSERT(m_State == 3);  // In game mode?
+	
 	cPacketizer Pkt(*this, 0xe);  // Spawn Object packet
 	Pkt.WriteVarInt(a_Vehicle.GetUniqueID());
 	Pkt.WriteByte(a_VehicleType);
@@ -1036,6 +1166,8 @@ void cProtocol172::SendSpawnVehicle(const cEntity & a_Vehicle, char a_VehicleTyp
 
 void cProtocol172::SendTabCompletionResults(const AStringVector & a_Results)
 {
+	ASSERT(m_State == 3);  // In game mode?
+	
 	cPacketizer Pkt(*this, 0x3a);  // Tab-Complete packet
 	Pkt.WriteVarInt(a_Results.size());
 
@@ -1051,6 +1183,8 @@ void cProtocol172::SendTabCompletionResults(const AStringVector & a_Results)
 
 void cProtocol172::SendTeleportEntity(const cEntity & a_Entity)
 {
+	ASSERT(m_State == 3);  // In game mode?
+	
 	cPacketizer Pkt(*this, 0x18);
 	Pkt.WriteInt(a_Entity.GetUniqueID());
 	Pkt.WriteFPInt(a_Entity.GetPosX());
@@ -1066,6 +1200,8 @@ void cProtocol172::SendTeleportEntity(const cEntity & a_Entity)
 
 void cProtocol172::SendThunderbolt(int a_BlockX, int a_BlockY, int a_BlockZ)
 {
+	ASSERT(m_State == 3);  // In game mode?
+	
 	cPacketizer Pkt(*this, 0x2c);  // Spawn Global Entity packet
 	Pkt.WriteVarInt(0);  // EntityID = 0, always
 	Pkt.WriteByte(1);  // Type = Thunderbolt
@@ -1080,6 +1216,8 @@ void cProtocol172::SendThunderbolt(int a_BlockX, int a_BlockY, int a_BlockZ)
 
 void cProtocol172::SendTimeUpdate(Int64 a_WorldAge, Int64 a_TimeOfDay)
 {
+	ASSERT(m_State == 3);  // In game mode?
+	
 	cPacketizer Pkt(*this, 0x03);
 	Pkt.WriteInt64(a_WorldAge);
 	Pkt.WriteInt64(a_TimeOfDay);
@@ -1091,6 +1229,8 @@ void cProtocol172::SendTimeUpdate(Int64 a_WorldAge, Int64 a_TimeOfDay)
 
 void cProtocol172::SendUnloadChunk(int a_ChunkX, int a_ChunkZ)
 {
+	ASSERT(m_State == 3);  // In game mode?
+	
 	cPacketizer Pkt(*this, 0x21);  // Chunk Data packet
 	Pkt.WriteInt(a_ChunkX);
 	Pkt.WriteInt(a_ChunkZ);
@@ -1105,6 +1245,8 @@ void cProtocol172::SendUnloadChunk(int a_ChunkX, int a_ChunkZ)
 
 void cProtocol172::SendUpdateBlockEntity(cBlockEntity & a_BlockEntity)
 {
+	ASSERT(m_State == 3);  // In game mode?
+	
 	cPacketizer Pkt(*this, 0x35);  // Update tile entity packet
 	Pkt.WriteInt(a_BlockEntity.GetPosX());
 	Pkt.WriteShort(a_BlockEntity.GetPosY());
@@ -1130,6 +1272,8 @@ void cProtocol172::SendUpdateBlockEntity(cBlockEntity & a_BlockEntity)
 
 void cProtocol172::SendUpdateSign(int a_BlockX, int a_BlockY, int a_BlockZ, const AString & a_Line1, const AString & a_Line2, const AString & a_Line3, const AString & a_Line4)
 {
+	ASSERT(m_State == 3);  // In game mode?
+	
 	cPacketizer Pkt(*this, 0x33);
 	Pkt.WriteInt(a_BlockX);
 	Pkt.WriteShort((short)a_BlockY);
@@ -1147,6 +1291,8 @@ void cProtocol172::SendUpdateSign(int a_BlockX, int a_BlockY, int a_BlockZ, cons
 
 void cProtocol172::SendUseBed(const cEntity & a_Entity, int a_BlockX, int a_BlockY, int a_BlockZ)
 {
+	ASSERT(m_State == 3);  // In game mode?
+	
 	cPacketizer Pkt(*this, 0x0a);
 	Pkt.WriteInt(a_Entity.GetUniqueID());
 	Pkt.WriteInt(a_BlockX);
@@ -1160,6 +1306,8 @@ void cProtocol172::SendUseBed(const cEntity & a_Entity, int a_BlockX, int a_Bloc
 
 void cProtocol172::SendWeather(eWeather a_Weather)
 {
+	ASSERT(m_State == 3);  // In game mode?
+	
 	{
 		cPacketizer Pkt(*this, 0x2b);  // Change Game State packet
 		Pkt.WriteByte((a_Weather == wSunny) ? 1 : 2);  // End rain / begin rain
@@ -1175,6 +1323,8 @@ void cProtocol172::SendWeather(eWeather a_Weather)
 
 void cProtocol172::SendWholeInventory(const cWindow & a_Window)
 {
+	ASSERT(m_State == 3);  // In game mode?
+	
 	cPacketizer Pkt(*this, 0x30);  // Window Items packet
 	Pkt.WriteChar(a_Window.GetWindowID());
 	Pkt.WriteShort(a_Window.GetNumSlots());
@@ -1192,6 +1342,8 @@ void cProtocol172::SendWholeInventory(const cWindow & a_Window)
 
 void cProtocol172::SendWindowClose(const cWindow & a_Window)
 {
+	ASSERT(m_State == 3);  // In game mode?
+	
 	cPacketizer Pkt(*this, 0x2e);
 	Pkt.WriteChar(a_Window.GetWindowID());
 }
@@ -1202,6 +1354,8 @@ void cProtocol172::SendWindowClose(const cWindow & a_Window)
 
 void cProtocol172::SendWindowOpen(const cWindow & a_Window)
 {
+	ASSERT(m_State == 3);  // In game mode?
+	
 	if (a_Window.GetWindowType() < 0)
 	{
 		// Do not send this packet for player inventory windows
@@ -1226,6 +1380,8 @@ void cProtocol172::SendWindowOpen(const cWindow & a_Window)
 
 void cProtocol172::SendWindowProperty(const cWindow & a_Window, short a_Property, short a_Value)
 {
+	ASSERT(m_State == 3);  // In game mode?
+	
 	cPacketizer Pkt(*this, 0x31);  // Window Property packet
 	Pkt.WriteChar(a_Window.GetWindowID());
 	Pkt.WriteShort(a_Property);
@@ -1236,7 +1392,7 @@ void cProtocol172::SendWindowProperty(const cWindow & a_Window, short a_Property
 
 
 
-void cProtocol172::AddReceivedData(const char * a_Data, int a_Size)
+void cProtocol172::AddReceivedData(const char * a_Data, size_t a_Size)
 {
 	// Write the incoming data into the comm log file:
 	if (g_ShouldLogCommIn)
@@ -1258,7 +1414,7 @@ void cProtocol172::AddReceivedData(const char * a_Data, int a_Size)
 		AString Hex;
 		CreateHexDump(Hex, a_Data, a_Size, 16);
 		m_CommLogFile.Printf("Incoming data: %d (0x%x) bytes: \n%s\n",
-			a_Size, a_Size, Hex.c_str()
+			(unsigned)a_Size, (unsigned)a_Size, Hex.c_str()
 		);
 		m_CommLogFile.Flush();
 	}
@@ -1431,6 +1587,7 @@ bool cProtocol172::HandlePacket(cByteBuffer & a_ByteBuffer, UInt32 a_PacketType)
 				case 0x0e: HandlePacketWindowClick            (a_ByteBuffer); return true;
 				case 0x0f: // Confirm transaction - not used in MCS
 				case 0x10: HandlePacketCreativeInventoryAction(a_ByteBuffer); return true;
+				case 0x11: HandlePacketEnchantItem            (a_ByteBuffer); return true;
 				case 0x12: HandlePacketUpdateSign             (a_ByteBuffer); return true;
 				case 0x13: HandlePacketPlayerAbilities        (a_ByteBuffer); return true;
 				case 0x14: HandlePacketTabComplete            (a_ByteBuffer); return true;
@@ -1485,15 +1642,16 @@ void cProtocol172::HandlePacketStatusRequest(cByteBuffer & a_ByteBuffer)
 {
 	// Send the response:
 	AString Response = "{\"version\":{\"name\":\"1.7.2\",\"protocol\":4},\"players\":{";
+	cServer * Server = cRoot::Get()->GetServer();
 	AppendPrintf(Response, "\"max\":%u,\"online\":%u,\"sample\":[]},",
-		cRoot::Get()->GetServer()->GetMaxPlayers(),
-		cRoot::Get()->GetServer()->GetNumPlayers()
+		Server->GetMaxPlayers(),
+		Server->GetNumPlayers()
 	);
 	AppendPrintf(Response, "\"description\":{\"text\":\"%s\"},",
-		cRoot::Get()->GetServer()->GetDescription().c_str()
+		Server->GetDescription().c_str()
 	);
 	AppendPrintf(Response, "\"favicon\":\"data:image/png;base64,%s\"",
-		cRoot::Get()->GetServer()->GetFaviconData().c_str()
+		Server->GetFaviconData().c_str()
 	);
 	Response.append("}");
 	
@@ -1555,15 +1713,6 @@ void cProtocol172::HandlePacketLoginEncryptionResponse(cByteBuffer & a_ByteBuffe
 	}
 	
 	StartEncryption(DecryptedKey);
-
-	// Send login success:
-	{
-		cPacketizer Pkt(*this, 0x02);  // Login success packet
-		Pkt.WriteString(Printf("%d", m_Client->GetUniqueID()));  // TODO: proper UUID
-		Pkt.WriteString(m_Client->GetUsername());
-	}
-
-	m_State = 3;  // State = Game
 	m_Client->HandleLogin(4, m_Client->GetUsername());
 }
 
@@ -1582,12 +1731,13 @@ void cProtocol172::HandlePacketLoginStart(cByteBuffer & a_ByteBuffer)
 		return;
 	}
 	
+	cServer * Server = cRoot::Get()->GetServer();
 	// If auth is required, then send the encryption request:
-	if (cRoot::Get()->GetServer()->ShouldAuthenticate())
+	if (Server->ShouldAuthenticate())
 	{
 		cPacketizer Pkt(*this, 0x01);
-		Pkt.WriteString(cRoot::Get()->GetServer()->GetServerID());
-		const AString & PubKeyDer = cRoot::Get()->GetServer()->GetPublicKeyDER();
+		Pkt.WriteString(Server->GetServerID());
+		const AString & PubKeyDer = Server->GetPublicKeyDER();
 		Pkt.WriteShort(PubKeyDer.size());
 		Pkt.WriteBuf(PubKeyDer.data(), PubKeyDer.size());
 		Pkt.WriteShort(4);
@@ -1596,14 +1746,6 @@ void cProtocol172::HandlePacketLoginStart(cByteBuffer & a_ByteBuffer)
 		return;
 	}
 	
-	// Send login success:
-	{
-		cPacketizer Pkt(*this, 0x02);  // Login success packet
-		Pkt.WriteString(Printf("%d", m_Client->GetUniqueID()));  // TODO: proper UUID
-		Pkt.WriteString(Username);
-	}
-
-	m_State = 3;  // State = Game
 	m_Client->HandleLogin(4, Username);
 }
 
@@ -1912,6 +2054,18 @@ void cProtocol172::HandlePacketUseEntity(cByteBuffer & a_ByteBuffer)
 
 
 
+void cProtocol172::HandlePacketEnchantItem(cByteBuffer & a_ByteBuffer)
+{
+	HANDLE_READ(a_ByteBuffer, ReadByte, Byte, WindowID);
+	HANDLE_READ(a_ByteBuffer, ReadByte, Byte, Enchantment);
+
+	m_Client->HandleEnchantItem(WindowID, Enchantment);
+}
+
+
+
+
+
 void cProtocol172::HandlePacketWindowClick(cByteBuffer & a_ByteBuffer)
 {
 	HANDLE_READ(a_ByteBuffer, ReadChar,    char,  WindowID);
@@ -1988,14 +2142,14 @@ void cProtocol172::WritePacket(cByteBuffer & a_Packet)
 
 
 
-void cProtocol172::SendData(const char * a_Data, int a_Size)
+void cProtocol172::SendData(const char * a_Data, size_t a_Size)
 {
 	if (m_IsEncrypted)
 	{
 		Byte Encrypted[8192];  // Larger buffer, we may be sending lots of data (chunks)
 		while (a_Size > 0)
 		{
-			size_t NumBytes = ((size_t)a_Size > sizeof(Encrypted)) ? sizeof(Encrypted) : (size_t)a_Size;
+			size_t NumBytes = (a_Size > sizeof(Encrypted)) ? sizeof(Encrypted) : a_Size;
 			m_Encryptor.ProcessData(Encrypted, (Byte *)a_Data, NumBytes);
 			m_Client->SendData((const char *)Encrypted, NumBytes);
 			a_Size -= NumBytes;
@@ -2136,10 +2290,11 @@ void cProtocol172::StartEncryption(const Byte * a_Key)
 	
 	// Prepare the m_AuthServerID:
 	cSHA1Checksum Checksum;
-	const AString & ServerID = cRoot::Get()->GetServer()->GetServerID();
+	cServer * Server = cRoot::Get()->GetServer();
+	const AString & ServerID = Server->GetServerID();
 	Checksum.Update((const Byte *)ServerID.c_str(), ServerID.length());
 	Checksum.Update(a_Key, 16);
-	Checksum.Update((const Byte *)cRoot::Get()->GetServer()->GetPublicKeyDER().data(), cRoot::Get()->GetServer()->GetPublicKeyDER().size());
+	Checksum.Update((const Byte *)Server->GetPublicKeyDER().data(), Server->GetPublicKeyDER().size());
 	Byte Digest[20];
 	Checksum.Finalize(Digest);
 	cSHA1Checksum::DigestToJava(Digest, m_AuthServerID);
@@ -2481,11 +2636,12 @@ void cProtocol172::cPacketizer::WriteEntityMetadata(const cEntity & a_Entity)
 			if (((cMinecart &)a_Entity).GetPayload() == cMinecart::mpNone)
 			{
 				cRideableMinecart & RideableMinecart = ((cRideableMinecart &)a_Entity);
-				if (!RideableMinecart.GetContent().IsEmpty())
+				const cItem & MinecartContent = RideableMinecart.GetContent();
+				if (!MinecartContent.IsEmpty())
 				{
 					WriteByte(0x54);
-					int Content = RideableMinecart.GetContent().m_ItemType;
-					Content |= RideableMinecart.GetContent().m_ItemDamage << 8;
+					int Content = MinecartContent.m_ItemType;
+					Content |= MinecartContent.m_ItemDamage << 8;
 					WriteInt(Content);
 					WriteByte(0x55);
 					WriteInt(RideableMinecart.GetBlockHeight());
@@ -2755,3 +2911,64 @@ void cProtocol172::cPacketizer::WriteEntityProperties(const cEntity & a_Entity)
 
 
 
+
+///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+// cProtocol176:
+
+cProtocol176::cProtocol176(cClientHandle * a_Client, const AString &a_ServerAddress, UInt16 a_ServerPort, UInt32 a_State) :
+	super(a_Client, a_ServerAddress, a_ServerPort, a_State)
+{
+}
+
+
+
+
+
+void cProtocol176::SendPlayerSpawn(const cPlayer & a_Player)
+{
+	// Called to spawn another player for the client
+	cPacketizer Pkt(*this, 0x0c);  // Spawn Player packet
+	Pkt.WriteVarInt(a_Player.GetUniqueID());
+	Pkt.WriteString(a_Player.GetClientHandle()->GetUUID());
+	Pkt.WriteString(a_Player.GetName());
+	Pkt.WriteVarInt(0);  // We have no data to send here
+	Pkt.WriteFPInt(a_Player.GetPosX());
+	Pkt.WriteFPInt(a_Player.GetPosY());
+	Pkt.WriteFPInt(a_Player.GetPosZ());
+	Pkt.WriteByteAngle(a_Player.GetYaw());
+	Pkt.WriteByteAngle(a_Player.GetPitch());
+	short ItemType = a_Player.GetEquippedItem().IsEmpty() ? 0 : a_Player.GetEquippedItem().m_ItemType;
+	Pkt.WriteShort(ItemType);
+	Pkt.WriteByte((3 << 5) | 6);  // Metadata: float + index 6
+	Pkt.WriteFloat((float)a_Player.GetHealth());
+	Pkt.WriteByte(0x7f);  // Metadata: end
+}
+
+
+
+
+
+void cProtocol176::HandlePacketStatusRequest(cByteBuffer & a_ByteBuffer)
+{
+	// Send the response:
+	AString Response = "{\"version\":{\"name\":\"1.7.6\",\"protocol\":5},\"players\":{";
+	AppendPrintf(Response, "\"max\":%u,\"online\":%u,\"sample\":[]},",
+		cRoot::Get()->GetServer()->GetMaxPlayers(),
+		cRoot::Get()->GetServer()->GetNumPlayers()
+	);
+	AppendPrintf(Response, "\"description\":{\"text\":\"%s\"},",
+		cRoot::Get()->GetServer()->GetDescription().c_str()
+	);
+	AppendPrintf(Response, "\"favicon\":\"data:image/png;base64,%s\"",
+		cRoot::Get()->GetServer()->GetFaviconData().c_str()
+	);
+	Response.append("}");
+	
+	cPacketizer Pkt(*this, 0x00);  // Response packet
+	Pkt.WriteString(Response);
+}
+
+
+
+
+
diff --git a/src/Protocol/Protocol17x.h b/src/Protocol/Protocol17x.h
index 41163009e..6a3e81eff 100644
--- a/src/Protocol/Protocol17x.h
+++ b/src/Protocol/Protocol17x.h
@@ -87,6 +87,7 @@ public:
 	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 SendLoginSuccess        (void) override;
 	virtual void SendMapColumn           (int a_ID, int a_X, int a_Y, const Byte * a_Colors, unsigned int a_Length) override;
 	virtual void SendMapDecorators       (int a_ID, const cMapDecoratorList & a_Decorators) override;
 	virtual void SendMapInfo             (int a_ID, unsigned int a_Scale) override;
@@ -196,7 +197,7 @@ protected:
 			m_Out.WriteVarUTF8String(a_Value);
 		}
 		
-		void WriteBuf(const char * a_Data, int a_Size)
+		void WriteBuf(const char * a_Data, size_t a_Size)
 		{
 			m_Out.Write(a_Data, a_Size);
 		}
@@ -243,7 +244,7 @@ protected:
 	
 	
 	/** Adds the received (unencrypted) data to m_ReceivedData, parses complete packets */
-	void AddReceivedData(const char * a_Data, int a_Size);
+	void AddReceivedData(const char * a_Data, size_t a_Size);
 	
 	/** Reads and handles the packet. The packet length and type have already been read.
 	Returns true if the packet was understood, false if it was an unknown packet
@@ -252,7 +253,7 @@ protected:
 	
 	// Packet handlers while in the Status state (m_State == 1):
 	void HandlePacketStatusPing   (cByteBuffer & a_ByteBuffer);
-	void HandlePacketStatusRequest(cByteBuffer & a_ByteBuffer);
+	virtual void HandlePacketStatusRequest(cByteBuffer & a_ByteBuffer);
 	
 	// Packet handlers while in the Login state (m_State == 2):
 	void HandlePacketLoginEncryptionResponse(cByteBuffer & a_ByteBuffer);
@@ -279,6 +280,7 @@ protected:
 	void HandlePacketTabComplete            (cByteBuffer & a_ByteBuffer);
 	void HandlePacketUpdateSign             (cByteBuffer & a_ByteBuffer);
 	void HandlePacketUseEntity              (cByteBuffer & a_ByteBuffer);
+	void HandlePacketEnchantItem            (cByteBuffer & a_ByteBuffer);
 	void HandlePacketWindowClick            (cByteBuffer & a_ByteBuffer);
 	void HandlePacketWindowClose            (cByteBuffer & a_ByteBuffer);
 	
@@ -287,7 +289,7 @@ protected:
 	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;
+	virtual void SendData(const char * a_Data, size_t a_Size) override;
 
 	void SendCompass(const cWorld & a_World);
 	
@@ -306,3 +308,22 @@ protected:
 
 
 
+
+/** The version 5 lengthed protocol, used by 1.7.6 through 1.7.9. */
+class cProtocol176 :
+	public cProtocol172
+{
+	typedef cProtocol172 super;
+	
+public:
+	cProtocol176(cClientHandle * a_Client, const AString & a_ServerAddress, UInt16 a_ServerPort, UInt32 a_State);
+	
+	// cProtocol172 overrides:
+	virtual void SendPlayerSpawn(const cPlayer & a_Player) override;
+	virtual void HandlePacketStatusRequest(cByteBuffer & a_ByteBuffer) override;
+
+} ;
+
+
+
+
diff --git a/src/Protocol/ProtocolRecognizer.cpp b/src/Protocol/ProtocolRecognizer.cpp
index 3b9003e60..2ccb9f197 100644
--- a/src/Protocol/ProtocolRecognizer.cpp
+++ b/src/Protocol/ProtocolRecognizer.cpp
@@ -59,6 +59,7 @@ AString cProtocolRecognizer::GetVersionTextFromInt(int a_ProtocolVersion)
 		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";
+		case PROTO_VERSION_1_7_6: return "1.7.6";
 	}
 	ASSERT(!"Unknown protocol version");
 	return Printf("Unknown protocol (%d)", a_ProtocolVersion);
@@ -396,6 +397,16 @@ void cProtocolRecognizer::SendLogin(const cPlayer & a_Player, const cWorld & a_W
 
 
 
+void cProtocolRecognizer::SendLoginSuccess(void)
+{
+	ASSERT(m_Protocol != NULL);
+	m_Protocol->SendLoginSuccess();
+}
+
+
+
+
+
 void cProtocolRecognizer::SendMapColumn(int a_ID, int a_X, int a_Y, const Byte * a_Colors, unsigned int a_Length)
 {
 	ASSERT(m_Protocol != NULL);
@@ -794,7 +805,7 @@ AString cProtocolRecognizer::GetAuthServerID(void)
 
 
 
-void cProtocolRecognizer::SendData(const char * a_Data, int a_Size)
+void cProtocolRecognizer::SendData(const char * a_Data, size_t a_Size)
 {
 	// This is used only when handling the server ping
 	m_Client->SendData(a_Data, a_Size);
@@ -854,7 +865,7 @@ bool cProtocolRecognizer::TryRecognizeProtocol(void)
 	// 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();
+	UInt32 ReadSoFar = (UInt32)m_Buffer.GetReadableSpace();
 	if (!m_Buffer.ReadVarInt(PacketLen))
 	{
 		// Not enough bytes for the packet length, keep waiting
@@ -931,7 +942,7 @@ bool cProtocolRecognizer::TryRecognizeLengthlessProtocol(void)
 bool cProtocolRecognizer::TryRecognizeLengthedProtocol(UInt32 a_PacketLengthRemaining)
 {
 	UInt32 PacketType;
-	UInt32 NumBytesRead = m_Buffer.GetReadableSpace();
+	UInt32 NumBytesRead = (UInt32)m_Buffer.GetReadableSpace();
 	if (!m_Buffer.ReadVarInt(PacketType))
 	{
 		return false;
@@ -962,7 +973,19 @@ bool cProtocolRecognizer::TryRecognizeLengthedProtocol(UInt32 a_PacketLengthRema
 			m_Buffer.ReadBEShort(ServerPort);
 			m_Buffer.ReadVarInt(NextState);
 			m_Buffer.CommitRead();
-			m_Protocol = new cProtocol172(m_Client, ServerAddress, ServerPort, NextState);
+			m_Protocol = new cProtocol172(m_Client, ServerAddress, (UInt16)ServerPort, NextState);
+			return true;
+		}
+		case PROTO_VERSION_1_7_6:
+		{
+			AString ServerAddress;
+			short ServerPort;
+			UInt32 NextState;
+			m_Buffer.ReadVarUTF8String(ServerAddress);
+			m_Buffer.ReadBEShort(ServerPort);
+			m_Buffer.ReadVarInt(NextState);
+			m_Buffer.CommitRead();
+			m_Protocol = new cProtocol176(m_Client, ServerAddress, (UInt16)ServerPort, NextState);
 			return true;
 		}
 	}
@@ -980,6 +1003,7 @@ bool cProtocolRecognizer::TryRecognizeLengthedProtocol(UInt32 a_PacketLengthRema
 void cProtocolRecognizer::SendLengthlessServerPing(void)
 {
 	AString Reply;
+	cServer * Server = cRoot::Get()->GetServer();
 	switch (cRoot::Get()->GetPrimaryServerVersion())
 	{
 		case PROTO_VERSION_1_2_5:
@@ -987,11 +1011,11 @@ void cProtocolRecognizer::SendLengthlessServerPing(void)
 		{
 			// 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(),
+				Server->GetDescription().c_str(),
 				cChatColor::Delimiter.c_str(),
-				cRoot::Get()->GetServer()->GetNumPlayers(),
+				Server->GetNumPlayers(),
 				cChatColor::Delimiter.c_str(),
-				cRoot::Get()->GetServer()->GetMaxPlayers()
+				Server->GetMaxPlayers()
 			);
 			break;
 		}
@@ -1021,9 +1045,9 @@ void cProtocolRecognizer::SendLengthlessServerPing(void)
 			
 			// http://wiki.vg/wiki/index.php?title=Server_List_Ping&oldid=3100
 			AString NumPlayers;
-			Printf(NumPlayers, "%d", cRoot::Get()->GetServer()->GetNumPlayers());
+			Printf(NumPlayers, "%d", Server->GetNumPlayers());
 			AString MaxPlayers;
-			Printf(MaxPlayers, "%d", cRoot::Get()->GetServer()->GetMaxPlayers());
+			Printf(MaxPlayers, "%d", Server->GetMaxPlayers());
 			
 			AString ProtocolVersionNum;
 			Printf(ProtocolVersionNum, "%d", cRoot::Get()->GetPrimaryServerVersion());
@@ -1037,7 +1061,7 @@ void cProtocolRecognizer::SendLengthlessServerPing(void)
 			Reply.push_back(0);
 			Reply.append(ProtocolVersionTxt);
 			Reply.push_back(0);
-			Reply.append(cRoot::Get()->GetServer()->GetDescription());
+			Reply.append(Server->GetDescription());
 			Reply.push_back(0);
 			Reply.append(NumPlayers);
 			Reply.push_back(0);
diff --git a/src/Protocol/ProtocolRecognizer.h b/src/Protocol/ProtocolRecognizer.h
index d7fb8fad2..408109ef4 100644
--- a/src/Protocol/ProtocolRecognizer.h
+++ b/src/Protocol/ProtocolRecognizer.h
@@ -18,8 +18,8 @@
 
 
 // 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, 1.7.4"
-#define MCS_PROTOCOL_VERSIONS "29, 39, 47, 49, 51, 60, 61, 73, 74, 77, 78, 4"
+#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, 1.7.4, 1.7.5, 1.7.6, 1.7.7, 1.7.8, 1.7.9"
+#define MCS_PROTOCOL_VERSIONS "29, 39, 47, 49, 51, 60, 61, 73, 74, 77, 78, 4, 5"
 
 
 
@@ -50,6 +50,7 @@ public:
 
 		// 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,
+		PROTO_VERSION_1_7_6 = 5,
 	} ;
 
 	cProtocolRecognizer(cClientHandle * a_Client);
@@ -90,6 +91,7 @@ public:
 	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 SendLoginSuccess        (void) override;
 	virtual void SendMapColumn           (int a_ID, int a_X, int a_Y, const Byte * a_Colors, unsigned int a_Length) override;
 	virtual void SendMapDecorators       (int a_ID, const cMapDecoratorList & a_Decorators) override;
 	virtual void SendMapInfo             (int a_ID, unsigned int a_Scale) override;
@@ -133,7 +135,7 @@ public:
 	
 	virtual AString GetAuthServerID(void) override;
 
-	virtual void SendData(const char * a_Data, int a_Size) override;
+	virtual void SendData(const char * a_Data, size_t a_Size) override;
 
 protected:
 	cProtocol * m_Protocol;  //< The recognized protocol