1 files changed, 200 insertions, 0 deletions
diff --git a/Tools/ProtoProxy/Connection.h b/Tools/ProtoProxy/Connection.h
new file mode 100644
index 000000000..013471302
--- /dev/null
+++ b/Tools/ProtoProxy/Connection.h
@@ -0,0 +1,200 @@
+
+// Connection.h
+
+// Interfaces to the cConnection class representing a single pair of connected sockets
+
+
+
+
+
+#pragma once
+
+#include <time.h>
+#include "ByteBuffer.h"
+
+
+
+
+
+class cServer;
+
+
+
+
+
+class cConnection
+{
+	AString m_LogNameBase;  ///< Base for the log filename and all files connected to this log
+	
+	int m_ItemIdx;  ///< Index for the next file into which item metadata should be written (ParseSlot() function)
+	
+	cCriticalSection m_CSLog;
+	FILE * m_LogFile;
+	
+	cServer & m_Server;
+	SOCKET m_ClientSocket;
+	SOCKET m_ServerSocket;
+	
+	clock_t m_BeginTick;  // Tick when the relative time was first retrieved (used for GetRelativeTime())
+	
+	enum eConnectionState
+	{
+		csUnencrypted,          // The connection is not encrypted. Packets must be decoded in order to be able to start decryption.
+		csEncryptedUnderstood,  // The communication is encrypted and so far all packets have been understood, so they can be still decoded
+		csEncryptedUnknown,     // The communication is encrypted, but an unknown packet has been received, so packets cannot be decoded anymore
+	};
+	
+	eConnectionState m_ClientState;
+	eConnectionState m_ServerState;
+	
+	int m_Nonce;
+	
+public:
+	cConnection(SOCKET a_ClientSocket, cServer & a_Server);
+	~cConnection();
+	
+	void Run(void);
+	
+	void Log(const char * a_Format, ...);
+	void DataLog(const void * a_Data, int a_Size, const char * a_Format, ...);
+	void LogFlush(void);
+	
+protected:
+	typedef CFB_Mode<AES>::Encryption Encryptor;
+	typedef CFB_Mode<AES>::Decryption Decryptor;
+	
+	cByteBuffer m_ClientBuffer;
+	cByteBuffer m_ServerBuffer;
+	
+	Decryptor m_ServerDecryptor;
+	Encryptor m_ServerEncryptor;
+
+	Decryptor m_ClientDecryptor;
+	Encryptor m_ClientEncryptor;
+	
+	/// Set to true when PACKET_PING is received from the client; will cause special parsing for server kick
+	bool m_HasClientPinged;
+
+	bool ConnectToServer(void);
+	
+	/// Relays data from server to client; returns false if connection aborted
+	bool RelayFromServer(void);
+	
+	/// Relays data from client to server; returns false if connection aborted
+	bool RelayFromClient(void);
+	
+	/// Returns the time relative to the first call of this function, in the fractional seconds elapsed
+	double GetRelativeTime(void);
+	
+	/// Sends data to the specified socket. If sending fails, prints a fail message using a_Peer and returns false.
+	bool SendData(SOCKET a_Socket, const char * a_Data, int a_Size, const char * a_Peer);
+	
+	/// Sends data to the specified socket. If sending fails, prints a fail message using a_Peer and returns false.
+	bool SendData(SOCKET a_Socket, cByteBuffer & a_Data, const char * a_Peer);
+	
+	/// Sends data to the specfied socket, after encrypting it using a_Encryptor. If sending fails, prints a fail message using a_Peer and returns false
+	bool SendEncryptedData(SOCKET a_Socket, Encryptor & a_Encryptor, const char * a_Data, int a_Size, const char * a_Peer);
+	
+	/// Sends data to the specfied socket, after encrypting it using a_Encryptor. If sending fails, prints a fail message using a_Peer and returns false
+	bool SendEncryptedData(SOCKET a_Socket, Encryptor & a_Encryptor, cByteBuffer & a_Data, const char * a_Peer);
+	
+	/// Decodes packets coming from the client, sends appropriate counterparts to the server; returns false if the connection is to be dropped
+	bool DecodeClientsPackets(const char * a_Data, int a_Size);
+
+	/// Decodes packets coming from the server, sends appropriate counterparts to the client; returns false if the connection is to be dropped
+	bool DecodeServersPackets(const char * a_Data, int a_Size);
+	
+	// Packet handling, client-side:
+	bool HandleClientAnimation(void);
+	bool HandleClientBlockDig(void);
+	bool HandleClientBlockPlace(void);
+	bool HandleClientChatMessage(void);
+	bool HandleClientClientStatuses(void);
+	bool HandleClientCreativeInventoryAction(void);
+	bool HandleClientEncryptionKeyResponse(void);
+	bool HandleClientEntityAction(void);
+	bool HandleClientHandshake(void);
+	bool HandleClientKeepAlive(void);
+	bool HandleClientLocaleAndView(void);
+	bool HandleClientPing(void);
+	bool HandleClientPlayerAbilities(void);
+	bool HandleClientPlayerLook(void);
+	bool HandleClientPlayerOnGround(void);
+	bool HandleClientPlayerPosition(void);
+	bool HandleClientPlayerPositionLook(void);
+	bool HandleClientSlotSelect(void);
+	bool HandleClientUpdateSign(void);
+	bool HandleClientUseEntity(void);
+	bool HandleClientWindowClick(void);
+	bool HandleClientWindowClose(void);
+
+	// Packet handling, server-side:
+	bool HandleServerAttachEntity(void);
+	bool HandleServerBlockAction(void);
+	bool HandleServerBlockChange(void);
+	bool HandleServerChangeGameState(void);
+	bool HandleServerChatMessage(void);
+	bool HandleServerCollectPickup(void);
+	bool HandleServerCompass(void);
+	bool HandleServerDestroyEntities(void);
+	bool HandleServerEncryptionKeyRequest(void);
+	bool HandleServerEncryptionKeyResponse(void);
+	bool HandleServerEntity(void);
+	bool HandleServerEntityEquipment(void);
+	bool HandleServerEntityHeadLook(void);
+	bool HandleServerEntityLook(void);
+	bool HandleServerEntityMetadata(void);
+	bool HandleServerEntityProperties(void);
+	bool HandleServerEntityRelativeMove(void);
+	bool HandleServerEntityRelativeMoveLook(void);
+	bool HandleServerEntityStatus(void);
+	bool HandleServerEntityTeleport(void);
+	bool HandleServerEntityVelocity(void);
+	bool HandleServerIncrementStatistic(void);
+	bool HandleServerKeepAlive(void);
+	bool HandleServerKick(void);
+	bool HandleServerLogin(void);
+	bool HandleServerMapChunk(void);
+	bool HandleServerMapChunkBulk(void);
+	bool HandleServerMultiBlockChange(void);
+	bool HandleServerNamedSoundEffect(void);
+	bool HandleServerPlayerAbilities(void);
+	bool HandleServerPlayerAnimation(void);
+	bool HandleServerPlayerListItem(void);
+	bool HandleServerPlayerPositionLook(void);
+	bool HandleServerSetExperience(void);
+	bool HandleServerSetSlot(void);
+	bool HandleServerSlotSelect(void);
+	bool HandleServerSoundEffect(void);
+	bool HandleServerSpawnMob(void);
+	bool HandleServerSpawnNamedEntity(void);
+	bool HandleServerSpawnObjectVehicle(void);
+	bool HandleServerSpawnPainting(void);
+	bool HandleServerSpawnPickup(void);
+	bool HandleServerTimeUpdate(void);
+	bool HandleServerUpdateHealth(void);
+	bool HandleServerUpdateSign(void);
+	bool HandleServerUpdateTileEntity(void);
+	bool HandleServerWindowClose(void);
+	bool HandleServerWindowContents(void);
+	bool HandleServerWindowOpen(void);
+	
+	/// Parses the slot data in a_Buffer into item description; returns true if successful, false if not enough data
+	bool ParseSlot(cByteBuffer & a_Buffer, AString & a_ItemDesc);
+	
+	/// Parses the metadata in a_Buffer into raw metadata in an AString; returns true if successful, false if not enough data
+	bool ParseMetadata(cByteBuffer & a_Buffer, AString & a_Metadata);
+	
+	/// Logs the contents of the metadata in the AString, using Log(). Assumes a_Metadata is valid (parsed by ParseMetadata()). The log is indented by a_IndentCount spaces
+	void LogMetadata(const AString & a_Metadata, size_t a_IndentCount);
+	
+	/// Send EKResp to the server:
+	void SendEncryptionKeyResponse(const AString & a_ServerPublicKey, const AString & a_Nonce);
+	
+	/// Starts client encryption based on the parameters received
+	void StartClientEncryption(const AString & a_EncryptedSecret, const AString & a_EncryptedNonce);
+} ;
+
+
+
+