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Start of CEngineClient implementation.

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* Rebuild SetRestrictedServerCommand and SetRestrictedClientCommands
* Implemented new CMemory Function to walk through a VTable.
* pDetours->GetCon() gets called first now.
*
This commit is contained in:
PixieCore 2022-05-06 00:34:46 +02:00
parent 31c4f36aa3
commit 66d122e192
8 changed files with 114 additions and 13 deletions
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52
r5dev/client/vengineclient_impl.cpp
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@ -9,4 +9,56 @@
//#ifdef GAMEDLL_S3
bool* m_bRestrictServerCommands = nullptr;
bool* m_bRestrictClientCommands = nullptr;
//#endif
//---------------------------------------------------------------------------------
// Purpose: define if commands from the server should be restricted or not.
// Input : bRestricted -
// Output :
//---------------------------------------------------------------------------------
void CEngineClient::SetRestrictServerCommands(bool bRestricted)
{
*m_bRestrictServerCommands = bRestricted;
}
//---------------------------------------------------------------------------------
// Purpose: get value for if commands are restricted from servers.
// Input :
// Output : bool
//---------------------------------------------------------------------------------
bool CEngineClient::GetRestrictServerCommands()
{
return *m_bRestrictServerCommands;
}
//---------------------------------------------------------------------------------
// Purpose: define if commands on the client should be restricted or not.
// Input : bRestricted -
// Output :
//---------------------------------------------------------------------------------
void CEngineClient::SetRestrictClientCommands(bool bRestricted)
{
*m_bRestrictClientCommands = bRestricted;
}
//---------------------------------------------------------------------------------
// Purpose: get value for if commands are restricted for clients.
// Input :
// Output : bool
//---------------------------------------------------------------------------------
bool CEngineClient::GetRestrictClientCommands()
{
return *m_bRestrictClientCommands;
}
//---------------------------------------------------------------------------------
// Purpose: get local player
// Input :
// Output : void* (C_Player)
//---------------------------------------------------------------------------------
void* CEngineClient::GetLocalPlayer()
{
return CEngineClient_GetLocalPlayer();
}

51
r5dev/client/vengineclient_impl.h
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@ -1,31 +1,68 @@
#pragma once
class CEngineClient
{
public:
void SetRestrictServerCommands(bool bRestrict);
bool GetRestrictServerCommands();
void SetRestrictClientCommands(bool bRestrict);
bool GetRestrictClientCommands();
void* GetLocalPlayer(); // Is actually C_Player.
};
/* ==== CVENGINECLIENT ================================================================================================================================================== */
inline CMemory p_IVEngineClient_CommandExecute;
inline auto IVEngineClient_CommandExecute = p_IVEngineClient_CommandExecute.RCast<void(*)(void* thisptr, const char* pCmd)>();
inline CMemory p_CEngineClient_CommandExecute;
inline auto CEngineClient_CommandExecute = p_CEngineClient_CommandExecute.RCast<void(*)(void* thisptr, const char* pCmd)>();
inline CMemory p_CEngineClient_GetLocalPlayer;
inline auto CEngineClient_GetLocalPlayer = p_CEngineClient_GetLocalPlayer.RCast<void*(*)()>();
///////////////////////////////////////////////////////////////////////////////
inline CEngineClient** g_ppEngineClient = nullptr;
inline CMemory g_pEngineClient_VTable = nullptr;
extern bool* m_bRestrictServerCommands;
extern bool* m_bRestrictClientCommands;
///////////////////////////////////////////////////////////////////////////////
class HVEngineClient : public IDetour
{
virtual void GetAdr(void) const
{
std::cout << "| FUN: IVEngineClient::CommandExecute : 0x" << std::hex << std::uppercase << p_IVEngineClient_CommandExecute.GetPtr() << std::setw(nPad) << " |" << std::endl;
std::cout << "| FUN: IVEngineClient::CommandExecute : 0x" << std::hex << std::uppercase << p_CEngineClient_CommandExecute.GetPtr() << std::setw(nPad) << " |" << std::endl;
std::cout << "| VAR: m_bRestrictServerCommands : 0x" << std::hex << std::uppercase << m_bRestrictServerCommands << std::setw(0) << " |" << std::endl;
std::cout << "| VAR: m_bRestrictClientCommands : 0x" << std::hex << std::uppercase << m_bRestrictClientCommands << std::setw(0) << " |" << std::endl;
std::cout << "| CON: g_ppEngineClient : 0x" << std::hex << std::uppercase << g_ppEngineClient << std::setw(0) << " |" << std::endl;
std::cout << "| CON: g_pEngineClient_VTable : 0x" << std::hex << std::uppercase << g_pEngineClient_VTable.GetPtr() << std::setw(0) << " |" << std::endl;
std::cout << "+----------------------------------------------------------------+" << std::endl;
}
virtual void GetFun(void) const
{
p_IVEngineClient_CommandExecute = g_mGameDll.FindPatternSIMD(reinterpret_cast<rsig_t>("\x48\x89\x5C\x24\x08\x57\x48\x83\xEC\x20\x48\x8D\x0D\x27\x61\xa5\x1E\x41\x8B\xD8"), "xxxx?xxxxxxxx????xxx");
IVEngineClient_CommandExecute = p_IVEngineClient_CommandExecute.RCast<void(*)(void* thisptr, const char* pCmd)>(); /*48 89 5C 24 ?? 57 48 83 EC 20 48 8D 0D ?? ?? ?? ?? 41 8B D8*/
p_CEngineClient_CommandExecute = g_mGameDll.FindPatternSIMD(reinterpret_cast<rsig_t>("\x48\x89\x5C\x24\x08\x57\x48\x83\xEC\x20\x48\x8D\x0D\x27\x61\xa5\x1E\x41\x8B\xD8"), "xxxx?xxxxxxxx????xxx");
CEngineClient_CommandExecute = p_CEngineClient_CommandExecute.RCast<void(*)(void* thisptr, const char* pCmd)>(); /*48 89 5C 24 ?? 57 48 83 EC 20 48 8D 0D ?? ?? ?? ?? 41 8B D8*/
#if defined (GAMEDLL_S0) || defined (GAMEDLL_S1)
p_CEngineClient_GetLocalPlayer = g_pEngineClient_VTable.WalkVTable(35).Deref().RCast<void*(*)()>();
#elif defined (GAMEDLL_S2) || defined (GAMEDLL_S3)
p_CEngineClient_GetLocalPlayer = g_pEngineClient_VTable.WalkVTable(36).Deref().RCast<void*(*)()>();
#endif
}
virtual void GetVar(void) const
{
m_bRestrictServerCommands = reinterpret_cast<bool*>(g_mGameDll.FindString("DevShotGenerator_Init()").FindPatternSelf("88 05", CMemory::Direction::UP).ResolveRelativeAddressSelf(0x2).OffsetSelf(0x2).GetPtr());
CMemory clRestrict = g_mGameDll.FindString("DevShotGenerator_Init()").FindPatternSelf("88 05", CMemory::Direction::UP).ResolveRelativeAddressSelf(0x2).OffsetSelf(0x2);
m_bRestrictServerCommands = clRestrict.RCast<bool*>();
m_bRestrictClientCommands = clRestrict.Offset(0x1).RCast<bool*>();
}
virtual void GetCon(void) const
{
#if defined (GAMEDLL_S0) || defined (GAMEDLL_S1)
g_pEngineClient_VTable = g_mGameDll.FindPatternSIMD(reinterpret_cast<rsig_t>("\x48\x8D\x05\x00\x00\x00\x00\x48\x8B\xD9\x48\x89\x01\xF6\xC2\x01\x74\x0A\xBA\x00\x00\x00\x00\xE8\x00\x00\x00\x00\x48\x8B\xC3\x48\x83\xC4\x20\x5B\xC3\xCC\xCC\xCC\xCC\xCC\x48\x85\xC9\x48\x8D\x41\xF8"),
"xxx????xxxxxxxxxxxx????x????xxxxxxxxxxxxxxxxxxxxx").ResolveRelativeAddressSelf(0x3, 0x7); /*48 8D 05 ? ? ? ? 48 8B D9 48 89 01 F6 C2 01 74 0A BA ? ? ? ? E8 ? ? ? ? 48 8B C3 48 83 C4 20 5B C3 CC CC CC CC CC 48 85 C9 48 8D 41 F8*/
#elif defined (GAMEDLL_S2) || defined (GAMEDLL_S3)
g_pEngineClient_VTable = g_mGameDll.FindPatternSIMD(reinterpret_cast<rsig_t>("\x48\x8B\x05\x00\x00\x00\x00\xFF\x90\x00\x00\x00\x00\x4C\x8D\x05\x00\x00\x00\x00"), "xxx????xx????xxx????").ResolveRelativeAddressSelf(0x3, 0x7).Deref(); /*48 8B 05 ? ? ? ? FF 90 ? ? ? ? 4C 8D 05 ? ? ? ? */
#endif
g_ppEngineClient = g_mGameDll.FindString("reload_script_callbacks_server").FindPatternSelf("48 8B", CMemory::Direction::UP).ResolveRelativeAddressSelf(0x3, 0x7).RCast<CEngineClient**>();
}
virtual void GetCon(void) const { }
virtual void Attach(void) const { }
virtual void Detach(void) const { }
};

4
r5dev/common/netmessages.h
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@ -69,13 +69,13 @@ inline CMemory MM_Heartbeat__ToString; // server HeartBeat? (baseserver.cpp).
// SVC_Print
//-------------------------------------------------------------------------
inline auto SVC_Print_Process = CMemory().RCast<bool(*)(SVC_Print* thisptr)>();
inline void* g_pSVC_Print_VTable;
inline void* g_pSVC_Print_VTable = nullptr;
//-------------------------------------------------------------------------
// SVC_UserMessage
//-------------------------------------------------------------------------
inline auto SVC_UserMessage_Process = CMemory().RCast<bool(*)(SVC_UserMessage* thisptr)>();
inline void* g_pSVC_UserMessage_VTable;
inline void* g_pSVC_UserMessage_VTable = nullptr;
void CNetMessages_Attach();
void CNetMessages_Detach();

2
r5dev/core/init.cpp
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@ -123,9 +123,9 @@ void Systems_Init()
initTimer.Start();
for (IDetour* pDetour : vDetour)
{
pDetour->GetCon();
pDetour->GetFun();
pDetour->GetVar();
pDetour->GetCon();
}
initTimer.End();
spdlog::info("+-------------------------------------------------------------+\n");

2
r5dev/engine/sys_dll2.cpp
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@ -50,7 +50,7 @@ bool CEngineAPI::ModInit(CEngineAPI* pEngineAPI, const char* pModName, const cha
bool results = CEngineAPI_ModInit(pEngineAPI, pModName, pGameDir);
if (!IsValveMod(pModName) && IsRespawnMod(pModName))
{
*m_bRestrictServerCommands = true; // Restrict commands.
(*g_ppEngineClient)->SetRestrictServerCommands(true); // Restrict commands.
ConCommandBase* disconnect = g_pCVar->FindCommandBase("disconnect");
disconnect->AddFlags(FCVAR_SERVER_CAN_EXECUTE); // Make sure server is not restricted to this.

2
r5dev/gameui/IBrowser.cpp
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@ -669,7 +669,7 @@ void IBrowser::SendHostingPostRequest(void)
//-----------------------------------------------------------------------------
void IBrowser::ProcessCommand(const char* pszCommand)
{
std::thread t(IVEngineClient_CommandExecute, this, pszCommand);
std::thread t(CEngineClient_CommandExecute, this, pszCommand);
t.detach(); // Detach from render thread.
// This is to avoid a race condition.

2
r5dev/gameui/IConsole.cpp
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@ -522,7 +522,7 @@ void CConsole::ProcessCommand(const char* pszCommand)
{
AddLog("# %s\n", pszCommand);
std::thread t(IVEngineClient_CommandExecute, this, pszCommand);
std::thread t(CEngineClient_CommandExecute, this, pszCommand);
t.detach(); // Detach from render thread.
// This is to avoid a race condition.

12
r5dev/public/include/memaddr.h
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@ -103,6 +103,18 @@ public:
return *this;
}
inline CMemory WalkVTable(ptrdiff_t vfuncIndex)
{
ptr += (8 * vfuncIndex);
return CMemory(this);
}
inline CMemory WalkVTableSelf(ptrdiff_t vfuncIndex)
{
ptr += (8 * vfuncIndex);
return *this;
}
bool CheckOpCodes(const vector<uint8_t> vOpcodeArray) const;
void Patch(vector<uint8_t> vOpcodes) const;
void PatchString(const string& svString) const;