WardenMac.cpp

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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/>.
 */
 
#include "WardenMac.h"
#include "ByteBuffer.h"
#include "Common.h"
#include "CryptoHash.h"
#include "GameTime.h"
#include "Log.h"
#include "Opcodes.h"
#include "SessionKeyGenerator.h"
#include "Util.h"
#include "WardenModuleMac.h"
#include "WorldPacket.h"
#include "WorldSession.h"
 
#include <array>
 
WardenMac::WardenMac() : Warden() { }
 
WardenMac::~WardenMac() { }
 
void WardenMac::Init(WorldSession* pClient, SessionKey const& K)
{
 _session = pClient;
 // Generate Warden Key
 SessionKeyGenerator<Trinity::Crypto::SHA1> WK(K);
 WK.Generate(_inputKey.data(), 16);
 WK.Generate(_outputKey.data(), 16);
 /*
 Seed: 4D808D2C77D905C41A6380EC08586AFE (0x05 packet)
 Hash: <?> (0x04 packet)
 Module MD5: 0DBBF209A27B1E279A9FEC5C168A15F7
 New Client Key: <?>
 New Cerver Key: <?>
 */
 
 _seed = { 0x4D, 0x80, 0x8D, 0x2C, 0x77, 0xD9, 0x05, 0xC4, 0x1A, 0x63, 0x80, 0xEC, 0x08, 0x58, 0x6A, 0xFE };
 
 _inputCrypto.Init(_inputKey);
 _outputCrypto.Init(_outputKey);
 TC_LOG_DEBUG("warden", "Server side warden for client {} initializing...", pClient->GetAccountId());
 TC_LOG_DEBUG("warden", "C->S Key: {}", ByteArrayToHexStr(_inputKey));
 TC_LOG_DEBUG("warden", "S->C Key: {}", ByteArrayToHexStr(_outputKey));
 TC_LOG_DEBUG("warden", " Seed: {}", ByteArrayToHexStr(_seed));
 TC_LOG_DEBUG("warden", "Loading Module...");
 
 MakeModuleForClient();
 
 TC_LOG_DEBUG("warden", "Module Key: {}", ByteArrayToHexStr(_module->Key));
 TC_LOG_DEBUG("warden", "Module ID: {}", ByteArrayToHexStr(_module->Id));
 RequestModule();
}
 
void WardenMac::InitializeModuleForClient(ClientWardenModule& module)
{
 // data assign
 module.CompressedData = Module_0DBBF209A27B1E279A9FEC5C168A15F7_Data.data();
 module.CompressedSize = Module_0DBBF209A27B1E279A9FEC5C168A15F7_Data.size();
}
 
void WardenMac::InitializeModule()
{
 TC_LOG_DEBUG("warden", "Initialize module");
}
 
void WardenMac::RequestHash()
{
 TC_LOG_DEBUG("warden", "Request hash");
 
 // Create packet structure
 WardenHashRequest Request;
 Request.Command = WARDEN_SMSG_HASH_REQUEST;
 Request.Seed = _seed;
 
 // Encrypt with warden RC4 key.
 EncryptData((uint8*)&Request, sizeof(WardenHashRequest));
 
 WorldPacket pkt(SMSG_WARDEN3_DATA, sizeof(WardenHashRequest));
 pkt.append((uint8*)&Request, sizeof(WardenHashRequest));
 _session->SendPacket(&pkt);
}
 
struct keyData {
 union
 {
 struct
 {
 uint8 bytes[16];
 } bytes;
 
 struct
 {
 int ints[4];
 } ints;
 };
};
 
void WardenMac::HandleHashResult(ByteBuffer &buff)
{
 
 // test
 int keyIn[4];
 
 keyData mod_seed = { { { { 0x4D, 0x80, 0x8D, 0x2C, 0x77, 0xD9, 0x05, 0xC4, 0x1A, 0x63, 0x80, 0xEC, 0x08, 0x58, 0x6A, 0xFE } } } };
 
 for (int i = 0; i < 4; ++i)
 {
 keyIn[i] = mod_seed.ints.ints[i];
 }
 
 int keyOut[4];
 int keyIn1, keyIn2;
 keyOut[0] = keyIn[0];
 keyIn[0] ^= 0xDEADBEEFu;
 keyIn1 = keyIn[1];
 keyIn[1] -= 0x35014542u;
 keyIn2 = keyIn[2];
 keyIn[2] += 0x5313F22u;
 keyIn[3] *= 0x1337F00Du;
 keyOut[1] = keyIn1 - 0x6A028A84;
 keyOut[2] = keyIn2 + 0xA627E44;
 keyOut[3] = 0x1337F00D * keyIn[3];
 // end test
 
 //const uint8 validHash[20] = { 0x56, 0x8C, 0x05, 0x4C, 0x78, 0x1A, 0x97, 0x2A, 0x60, 0x37, 0xA2, 0x29, 0x0C, 0x22, 0xB5, 0x25, 0x71, 0xA0, 0x6F, 0x4E };
 
 // Verify key
 Trinity::Crypto::SHA1::Digest result;
 buff.read(result);
 if (result != Trinity::Crypto::SHA1::GetDigestOf(reinterpret_cast<uint8*>(keyIn), 16))
 {
 char const* penalty = ApplyPenalty(nullptr);
 TC_LOG_WARN("warden", "{} failed hash reply. Action: {}", _session->GetPlayerInfo(), penalty);
 return;
 }
 
 TC_LOG_DEBUG("warden", "Request hash reply: succeed");
 
 // client 7F96EEFDA5B63D20A4DF8E00CBF48304
 //const uint8 client_key[16] = { 0x7F, 0x96, 0xEE, 0xFD, 0xA5, 0xB6, 0x3D, 0x20, 0xA4, 0xDF, 0x8E, 0x00, 0xCB, 0xF4, 0x83, 0x04 };
 
 // server C2B7ADEDFCCCA9C2BFB3F85602BA809B
 //const uint8 server_key[16] = { 0xC2, 0xB7, 0xAD, 0xED, 0xFC, 0xCC, 0xA9, 0xC2, 0xBF, 0xB3, 0xF8, 0x56, 0x02, 0xBA, 0x80, 0x9B };
 
 // change keys here
 memcpy(_inputKey.data(), keyIn, 16);
 memcpy(_outputKey.data(), keyOut, 16);
 
 _inputCrypto.Init(_inputKey);
 _outputCrypto.Init(_outputKey);
 
 _initialized = true;
}
 
void WardenMac::RequestChecks()
{
 TC_LOG_DEBUG("warden", "Request data");
 
 ByteBuffer buff;
 buff << uint8(WARDEN_SMSG_CHEAT_CHECKS_REQUEST);
 
 std::string str = "Test string!";
 
 buff << uint8(str.size());
 buff.append(str.c_str(), str.size());
 
 buff.hexlike();
 
 // Encrypt with warden RC4 key.
 EncryptData(buff.contents(), buff.size());
 
 WorldPacket pkt(SMSG_WARDEN3_DATA, buff.size());
 pkt.append(buff);
 _session->SendPacket(&pkt);
 
 _dataSent = true;
}
 
void WardenMac::HandleCheckResult(ByteBuffer &buff)
{
 TC_LOG_DEBUG("warden", "Handle data");
 
 _dataSent = false;
 _clientResponseTimer = 0;
 
 //uint16 Length;
 //buff >> Length;
 //uint32 Checksum;
 //buff >> Checksum;
 
 //if (!IsValidCheckSum(Checksum, buff.contents() + buff.rpos(), Length))
 //{
 // buff.rpos(buff.wpos());
 // if (sWorld->getBoolConfig(CONFIG_BOOL_WARDEN_KICK))
 // Client->KickPlayer();
 // return;
 //}
 
 //bool found = false;
 
 std::string str = "Test string!";
 
 Trinity::Crypto::SHA1 sha1;
 sha1.UpdateData(str);
 uint32 magic = 0xFEEDFACE; // unsure
 sha1.UpdateData((uint8*)&magic, 4);
 sha1.Finalize();
 
 std::array<uint8, Trinity::Crypto::SHA1::DIGEST_LENGTH> sha1Hash;
 buff.read(sha1Hash.data(), sha1Hash.size());
 
 if (sha1Hash != sha1.GetDigest())
 {
 TC_LOG_DEBUG("warden", "Handle data failed: SHA1 hash is wrong!");
 //found = true;
 }
 
 std::array<uint8, 16> ourMD5Hash = Trinity::Crypto::MD5::GetDigestOf(str);
 std::array<uint8, 16> theirsMD5Hash;
 buff.read(theirsMD5Hash);
 
 if (ourMD5Hash != theirsMD5Hash)
 {
 TC_LOG_DEBUG("warden", "Handle data failed: MD5 hash is wrong!");
 //found = true;
 }
 
 _session->KickPlayer("WardenMac::HandleCheckResult");
}