r5sdk/r5dev/tier0/cmd.h

#pragma once

//-----------------------------------------------------------------------------
// Forward declarations
//-----------------------------------------------------------------------------
class ConCommandBase;

//-----------------------------------------------------------------------------
// Any executable that wants to use ConVars need to implement one of
// these to hook up access to console variables.
//-----------------------------------------------------------------------------
class IConCommandBaseAccessor
{
public:
	// Flags is a combination of FCVAR flags in cvar.h.
	// hOut is filled in with a handle to the variable.
	virtual bool RegisterConCommandBase(ConCommandBase* pVar) = 0;
};

//-----------------------------------------------------------------------------
// Purpose: Command buffer context
//-----------------------------------------------------------------------------
typedef enum
{
	CBUF_FIRST_PLAYER = 0,
	CBUF_LAST_PLAYER = MAX_SPLITSCREEN_CLIENTS - 1,
	CBUF_SERVER = CBUF_LAST_PLAYER + 1,

	CBUF_COUNT,
} ECommandTarget_t;

//-----------------------------------------------------------------------------
// Sources of console commands
//-----------------------------------------------------------------------------
enum class cmd_source_t : int
{
	kCommandSrcCode,
	kCommandSrcClientCmd,
	kCommandSrcUserInput,
	kCommandSrcNetClient,
	kCommandSrcNetServer,
	kCommandSrcDemoFile,
	kCommandSrcInvalid = -1
};

//-----------------------------------------------------------------------------
// Purpose: Command tokenizer
//-----------------------------------------------------------------------------
class CCommand
{
private:
	enum
	{
		COMMAND_MAX_ARGC   = 64,
		COMMAND_MAX_LENGTH = 512,
	};

public:
	CCommand() = delete;

	int MaxCommandLength();
	std::int64_t ArgC(void) const;
	const char** ArgV(void) const;
	const char* ArgS(void) const;
	const char* GetCommandString(void) const;
	const char* Arg(int nIndex) const;
	const char* operator[](int nIndex) const;

private:
	int          m_nQueuedVal;
	int          m_nArgc;
	std::int64_t m_nArgv0Size;
	char         m_pArgSBuffer[COMMAND_MAX_LENGTH];
	char         m_pArgvBuffer[COMMAND_MAX_LENGTH];
	const char*  m_ppArgv[COMMAND_MAX_ARGC];
};

//-----------------------------------------------------------------------------
// Purpose: The base console invoked command/cvar interface
//-----------------------------------------------------------------------------
class ConCommandBase
{
public:
	bool HasFlags(int nFlags);
	void AddFlags(int nFlags);
	void RemoveFlags(int nFlags);

	bool IsCommand(void) const;
	bool IsRegistered(void) const;
	static bool IsFlagSet(ConCommandBase* pCommandBase, int nFlags);

	int GetFlags(void) const;
	ConCommandBase* GetNext(void) const;
	const char* GetHelpText(void) const;
	const char* GetUsageText(void) const;

	char* CopyString(const char* szFrom) const;

	void*    m_pConCommandBaseVTable;          //0x0000
	ConCommandBase*          m_pNext;          //0x0008
	bool                     m_bRegistered;    //0x0010
	char                     pad_0011[7];      //0x0011
	const char*              m_pszName;        //0x0018
	const char*              m_pszHelpString;  //0x0020
	const char*              m_pszUsageString; //0x0028
	IConCommandBaseAccessor* s_pAccessor;      //0x0030 <-- unused since executable is monolithic.
	int                      m_nFlags;         //0x0038
	char                     pad_003C[4];      //0x003C
}; //Size: 0x0040

//-----------------------------------------------------------------------------
// Purpose: The console invoked command
//-----------------------------------------------------------------------------
class ConCommand : public ConCommandBase
{
	friend class CCVar;
public:
	ConCommand(void) {};
	ConCommand(const char* szName, const char* szHelpString, int nFlags, void* pCallback, void* pCommandCompletionCallback);
	void Init(void);
	bool IsCommand(void) const;

	void*          m_nNullCallBack      {}; //0x0040
	char           m_nPad48[8]          {}; //0x0048
	void*          m_pCommandCallback   {}; //0x0050
	void*          m_pCompletionCallback{}; //0x0058
	int            m_nCallbackFlags     {}; //0x0060
	char           m_nPad68[4]          {}; //0x0068
};

namespace
{
	/* ==== COMMAND_BUFFER ================================================================================================================================================== */
	ADDRESS p_Cbuf_AddText = g_mGameDll.FindPatternSIMD((std::uint8_t*)"\x44\x89\x4C\x24\x00\x48\x89\x4C\x24\x00\x55\x56\x57\x41\x54\x41\x55\x41\x56\x41\x57\x48\x81\xEC\x00\x00\x00\x00\x48\x8D\x6C\x24\x00\x48\x89\x9D\x00\x00\x00\x00\x4C\x8B", "xxxx?xxxx?xxxxxxxxxxxxxx????xxxx?xxx????xx");
	bool (*Cbuf_AddText)(ECommandTarget_t eTarget, const char* pText, cmd_source_t cmdSource, int nTickDelay) = (bool (*)(ECommandTarget_t, const char*, cmd_source_t, int))p_Cbuf_AddText.GetPtr(); /*44 89 4C 24 ? 48 89 4C 24 ? 55 56 57 41 54 41 55 41 56 41 57 48 81 EC ? ? ? ? 48 8D 6C 24 ? 48 89 9D ? ? ? ? 4C 8B*/

	ADDRESS p_Cbuf_Execute = g_mGameDll.FindPatternSIMD((std::uint8_t*)"\x48\x89\x5C\x24\x00\x48\x89\x6C\x24\x00\x48\x89\x74\x24\x00\x57\x48\x83\xEC\x20\xFF\x15\x00\x00\x00\x00", "xxxx?xxxx?xxxx?xxxxxxx????");
	void (*Cbuf_Execute)(void) = (void (*)(void))p_Cbuf_Execute.GetPtr(); /*48 89 5C 24 ? 48 89 6C 24 ? 48 89 74 24 ? 57 48 83 EC 20 FF 15 ? ? ? ?*/

	/* ==== CONCOMMAND ====================================================================================================================================================== */
	ADDRESS p_ConCommandBase_IsFlagSet = g_mGameDll.FindPatternSIMD((std::uint8_t*)"\x85\x51\x38\x0F\x95\xC0\xC3", "xxxxxxx");
	bool (*ConCommandBase_IsFlagSet)(ConCommandBase* cmd, int flag) = (bool (*)(ConCommandBase*, int))p_ConCommandBase_IsFlagSet.GetPtr(); /*85 51 38 0F 95 C0 C3*/

	ADDRESS p_ConCommand_CMaterialSystemCmdInit = g_mGameDll.FindPatternSIMD((std::uint8_t*)"\x48\x89\x5C\x24\x00\x48\x89\x74\x24\x00\x48\x89\x7C\x24\x00\x55\x41\x54\x41\x55\x41\x56\x41\x57\x48\x8B\xEC\x48\x83\xEC\x50\x48\x8B\x15\x00\x00\x00\x00", "xxxx?xxxx?xxxx?xxxxxxxxxxxxxxxxxxx????");
	ConCommand*(*ConCommand_CMaterialSystemCmdInit)() = (ConCommand* (*)())p_ConCommand_CMaterialSystemCmdInit.GetPtr();

	ADDRESS p_ConCommand_RegisterConCommand = g_mGameDll.FindPatternSIMD((std::uint8_t*)"\x48\x8B\xD1\x48\x8B\x0D\x00\x00\x00\x00\x48\x85\xC9\x74\x06", "xxxxxx????xxxxx");
	void* (*ConCommand_RegisterConCommand)(ConCommand* pCommand) = (void* (*)(ConCommand*))p_ConCommand_RegisterConCommand.GetPtr(); /*48 8B D1 48 8B 0D ?? ?? ?? ?? 48 85 C9 74 06*/

	ADDRESS p_NullSub = g_mGameDll.FindPatternSIMD((std::uint8_t*)"\xC2\x00\x00\xCC\xCC\xCC\xCC\xCC\xCC\xCC\xCC\xCC\xCC\xCC\xCC\xCC\x40\x53\x48\x83\xEC\x20\x48\x8D\x05\x00\x00\x00\x00", "xxxxxxxxxxxxxxxxxxxxxxxxx????");
	void (*NullSub)() = (void (*)())p_NullSub.GetPtr(); /*C2 00 00 CC CC CC CC CC CC CC CC CC CC CC CC CC 40 53 48 83 EC 20 48 8D 05 ?? ?? ?? ??*/

	ADDRESS p_CallbackStub = g_mGameDll.FindPatternSIMD((std::uint8_t*)"\x33\xC0\xC3\xCC\xCC\xCC\xCC\xCC\xCC\xCC\xCC\xCC\xCC\xCC\xCC\xCC\x80\x49\x68\x08", "xxxxxxxxxxxxxxxxxxxx");
	void* (*CallbackStub)(struct _exception* _exc) = (void* (*)(struct _exception*))p_CallbackStub.GetPtr(); /*33 C0 C3 CC CC CC CC CC CC CC CC CC CC CC CC CC 80 49 68 08*/ /*UserMathErrorFunction*/

	static ADDRESS g_pConCommandVtable = p_ConCommand_CMaterialSystemCmdInit.FindPatternSelf("4C 8D 25", ADDRESS::Direction::DOWN, 150).ResolveRelativeAddressSelf(0x3, 0x7);
}

///////////////////////////////////////////////////////////////////////////////
void ConCommand_Attach();
void ConCommand_Detach();

extern ConCommand* g_pConCommand;

///////////////////////////////////////////////////////////////////////////////
class HConCommand : public IDetour
{
	virtual void debugp()
	{
		std::cout << "| FUN: Cbuf_AddText                         : 0x" << std::hex << std::uppercase << p_Cbuf_AddText.GetPtr()                      << std::setw(npad) << " |" << std::endl;
		std::cout << "| FUN: Cbuf_Execute                         : 0x" << std::hex << std::uppercase << p_Cbuf_Execute.GetPtr()                      << std::setw(npad) << " |" << std::endl;
		std::cout << "+----------------------------------------------------------------+" << std::endl;
		std::cout << "| FUN: ConCommandBase::IsFlagSet            : 0x" << std::hex << std::uppercase << p_ConCommandBase_IsFlagSet.GetPtr()          << std::setw(npad) << " |" << std::endl;
		std::cout << "| FUN: ConCommand::CMaterialSystemCmdInit   : 0x" << std::hex << std::uppercase << p_ConCommand_CMaterialSystemCmdInit.GetPtr() << std::setw(npad) << " |" << std::endl;
		std::cout << "| FUN: ConCommand::RegisterConCommand       : 0x" << std::hex << std::uppercase << p_ConCommand_RegisterConCommand.GetPtr()     << std::setw(npad) << " |" << std::endl;
		std::cout << "+----------------------------------------------------------------+" << std::endl;
		std::cout << "| FUN: CallbackStub                         : 0x" << std::hex << std::uppercase << p_CallbackStub.GetPtr()                      << std::setw(npad) << " |" << std::endl;
		std::cout << "| FUN: NullSub                              : 0x" << std::hex << std::uppercase << p_NullSub.GetPtr()                           << std::setw(npad) << " |" << std::endl;
		std::cout << "+----------------------------------------------------------------+" << std::endl;
		std::cout << "| VAR: g_pConCommandVtable                  : 0x" << std::hex << std::uppercase << g_pConCommandVtable.GetPtr()                 << std::setw(npad) << " |" << std::endl;
		std::cout << "+----------------------------------------------------------------+" << std::endl;
	}
};
///////////////////////////////////////////////////////////////////////////////

REGISTER(HConCommand);