Miscellany

//ANTIPB.CPP
BOOL InsertDetours()
{
	orig_LoadLibrary	=	(struct HINSTANCE__ *(__stdcall *)(const char *)) \
		DetourFunction((LPBYTE)LoadLibrary,     (LPBYTE)LoadLibrary_Hook );
	return TRUE;
}


HMODULE LoadFileModule( char name[] )
{
	char     chCopyTo[512]=""; 
	char     chCopyFrom[512]=""; 
	char     newName[20]="";

	HMODULE hDdrawmod = LoadLibraryEx( name,NULL, DONT_RESOLVE_DLL_REFERENCES );
	if (hDdrawmod == NULL)
		hDdrawmod = GetModuleHandle( name );

	if (hDdrawmod == NULL)
		return 0;

	GetModuleFileName( hDdrawmod, chCopyFrom, 512 ); 
	strcpy( chCopyTo, dlldir ); 
	strcat( chCopyTo, "DataFiles" );
	CreateDirectory( chCopyTo, NULL );
	strcat( chCopyTo, "\\" );
	strcpy( newName, name );
	newName[0] = 'b';
	strcat( chCopyTo, newName ); 
	CopyFile( chCopyFrom, chCopyTo, FALSE ); 
	SetFileAttributes( chCopyTo, GetFileAttributes( chCopyFrom ) ); 
	HMODULE ret = LoadLibrary( chCopyTo );

	return ret;
}


//HOOK.CPP
HMODULE (WINAPI *orig_LoadLibrary)( LPCSTR lpFileName );
HMODULE WINAPI LoadLibrary_Hook( LPCSTR lpFileName )
{
	HMODULE hModule = orig_LoadLibrary( lpFileName );
	DWORD ret = (DWORD)orig_LoadLibrary(lpFileName);

	if( strstr( lpFileName, "gfx_d3d_mp_x86_s.dll" ) )
	{
		//AddRefEntityToScene
		DWORD dwAddRef			=	( ret + AddRefEntity );
		pR_AddRefEntityToScene	=	(void (__cdecl *)(refEntity_t *,int,int)) \
			DetourFunction( (PBYTE)dwAddRef,(PBYTE)R_AddRefEntityToScene );
		__asm mov [ pR_AddRefEntityToScene ], eax;

		//RenderScene
		DWORD dwRender			=	( ret + RenderScene );
		pR_RenderScene			=	(void (__cdecl *)(refdef_t *)) \
			DetourFunction( (PBYTE)dwRender,	(PBYTE)R_RenderScene );
		__asm mov [ pR_RenderScene ], eax;

		//Register Font
		DWORD dwFont			=	( ret + RegisterFont );
		pR_RegisterFont			=	(unsigned long (__cdecl *)(char *,int)) \
			DetourFunction((PBYTE)dwFont,	(PBYTE)R_RegisterFont );
		__asm mov [ pR_RegisterFont ], eax;

		//DrawText
		DWORD dwText			=	( ret + DrawMyText );
		pR_DrawText				=	(void (__cdecl *)(char *,int,int,float,float,float,float,float *,int)) \
			DetourFunction((PBYTE)dwText,(PBYTE)R_DrawText);
		__asm mov [ pR_DrawText ], eax;
	}
	
	return hModule;
}

BOOL WINAPI DllMain ( HINSTANCE hinstDLL, DWORD fdwReason, LPVOID lpvReserved ) 
{
    switch ( fdwReason ) 
    { 
	case DLL_PROCESS_ATTACH: 
		{
			DisableThreadLibraryCalls( hinstDLL );
			GetModuleFileName( hinstDLL, dlldir, 512 );
			
			for( int i = strlen( dlldir ); i > 0; i-- )
			{
				if( dlldir[i] == '\\' )
				{
					dlldir[i+1] = 0;
					break;
				}
			}
			
			InsertDetours();
			
			return true; 
		} 
	} 
	return false; 
}