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/*
* This file is part of the TrinityCore Project. See AUTHORS file for Copyright information
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 of the License, or (at your
* option) any later version.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License along
* with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef _WARDEN_BASE_H
#define _WARDEN_BASE_H
#include "ARC4.h"
#include "AuthDefines.h"
#include "Optional.h"
#include "WardenCheckMgr.h"
#include <array>
enum WardenOpcodes
{
// Client->Server
WARDEN_CMSG_MODULE_MISSING = 0,
WARDEN_CMSG_MODULE_OK = 1,
WARDEN_CMSG_CHEAT_CHECKS_RESULT = 2,
WARDEN_CMSG_MEM_CHECKS_RESULT = 3, // only sent if MEM_CHECK bytes doesn't match
WARDEN_CMSG_HASH_RESULT = 4,
WARDEN_CMSG_MODULE_FAILED = 5, // this is sent when client failed to load uploaded module due to cache fail
// Server->Client
WARDEN_SMSG_MODULE_USE = 0,
WARDEN_SMSG_MODULE_CACHE = 1,
WARDEN_SMSG_CHEAT_CHECKS_REQUEST = 2,
WARDEN_SMSG_MODULE_INITIALIZE = 3,
WARDEN_SMSG_MEM_CHECKS_REQUEST = 4, // byte len; while (!EOF) { byte unk(1); byte index(++); string module(can be 0); int offset; byte len; byte[] bytes_to_compare[len]; }
WARDEN_SMSG_HASH_REQUEST = 5
};
#pragma pack(push, 1)
struct WardenModuleUse
{
uint8 Command;
std::array<uint8, 16> ModuleId;
std::array<uint8, 16> ModuleKey;
uint32 Size;
};
static_assert(sizeof(WardenModuleUse) == (1 + 16 + 16 + 4));
struct WardenModuleTransfer
{
uint8 Command;
uint16 DataSize;
uint8 Data[500];
};
static_assert(sizeof(WardenModuleTransfer) == (1 + 2 + 500));
struct WardenHashRequest
{
uint8 Command;
std::array<uint8, 16> Seed;
};
static_assert(sizeof(WardenHashRequest) == (1 + 16));
#pragma pack(pop)
struct ClientWardenModule
{
std::array<uint8, 16> Id;
std::array<uint8, 16> Key;
uint8 const* CompressedData;
size_t CompressedSize;
};
class WorldSession;
class TC_GAME_API Warden
{
public:
Warden();
virtual ~Warden();
virtual void Init(WorldSession* session, SessionKey const& K) = 0;
void Update(uint32 diff);
void HandleData(ByteBuffer& buff);
bool ProcessLuaCheckResponse(std::string const& msg);
virtual size_t DEBUG_ForceSpecificChecks(std::vector<uint16> const& checks) = 0;
protected:
void DecryptData(uint8* buffer, uint32 length);
void EncryptData(uint8* buffer, uint32 length);
virtual void InitializeModule() = 0;
virtual void RequestHash() = 0;
virtual void HandleHashResult(ByteBuffer& buff) = 0;
virtual void HandleCheckResult(ByteBuffer& buff) = 0;
virtual void InitializeModuleForClient(ClientWardenModule& module) = 0;
virtual void RequestChecks() = 0;
void MakeModuleForClient();
void SendModuleToClient();
void RequestModule();
static bool IsValidCheckSum(uint32 checksum, const uint8 *data, const uint16 length);
static uint32 BuildChecksum(const uint8 *data, uint32 length);
// If nullptr is passed, the default action from config is executed
char const* ApplyPenalty(WardenCheck const* check);
WorldSession* _session;
std::array<uint8, 16> _inputKey = {};
std::array<uint8, 16> _outputKey = {};
std::array<uint8, 16> _seed = {};
Trinity::Crypto::ARC4 _inputCrypto;
Trinity::Crypto::ARC4 _outputCrypto;
uint32 _checkTimer; // Timer for sending check requests
uint32 _clientResponseTimer; // Timer for client response delay
bool _dataSent;
Optional<ClientWardenModule> _module;
bool _initialized;
};
#endif
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