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improve ddraw wrapper detection

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This commit is contained in:
FunkyFr3sh 2024-07-13 22:47:40 +02:00
parent cecfd5c611
commit 9ac5eda9be
2 changed files with 138 additions and 35 deletions
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3
inc/utils.h
View File

@ -6,7 +6,8 @@
HMODULE WINAPI util_enumerate_modules(_In_opt_ HMODULE hModuleLast);
BOOL util_caller_is_ddraw_wrapper(void* returnAddress);
FARPROC util_get_iat_proc(HMODULE mod, char* module_name, char* function_name);
BOOL util_caller_is_ddraw_wrapper(void* return_address);
BOOL util_is_bad_read_ptr(void* p);
BOOL util_is_minimized(HWND hwnd);
BOOL util_in_foreground();

170
src/utils.c
View File

@ -69,62 +69,164 @@ HMODULE WINAPI util_enumerate_modules(_In_opt_ HMODULE hModuleLast)
return NULL;
}
BOOL util_caller_is_ddraw_wrapper(void* returnAddress)
FARPROC util_get_iat_proc(HMODULE mod, char* module_name, char* function_name)
{
if (!mod || mod == INVALID_HANDLE_VALUE)
return NULL;
__try
{
PIMAGE_DOS_HEADER dos_header = (PIMAGE_DOS_HEADER)mod;
if (dos_header->e_magic != IMAGE_DOS_SIGNATURE)
return NULL;
PIMAGE_NT_HEADERS nt_headers = (PIMAGE_NT_HEADERS)((DWORD)dos_header + (DWORD)dos_header->e_lfanew);
if (nt_headers->Signature != IMAGE_NT_SIGNATURE)
return NULL;
DWORD import_desc_rva = nt_headers->OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_IMPORT].VirtualAddress;
DWORD import_desc_size = nt_headers->OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_IMPORT].Size;
if (import_desc_rva == 0 || import_desc_size == 0)
return NULL;
PIMAGE_IMPORT_DESCRIPTOR import_desc = (PIMAGE_IMPORT_DESCRIPTOR)((DWORD)dos_header + import_desc_rva);
while (import_desc->FirstThunk)
{
if (!import_desc->OriginalFirstThunk || !import_desc->Name)
{
import_desc++;
continue;
}
char* imp_module_name = (char*)((DWORD)dos_header + import_desc->Name);
if (_stricmp(imp_module_name, module_name) == 0)
{
PIMAGE_THUNK_DATA first_thunk = (void*)((DWORD)dos_header + import_desc->FirstThunk);
PIMAGE_THUNK_DATA o_first_thunk = (void*)((DWORD)dos_header + import_desc->OriginalFirstThunk);
while (first_thunk->u1.Function)
{
if (!o_first_thunk->u1.AddressOfData)
{
first_thunk++;
o_first_thunk++;
continue;
}
PIMAGE_IMPORT_BY_NAME import = (void*)((DWORD)dos_header + o_first_thunk->u1.AddressOfData);
if ((o_first_thunk->u1.Ordinal & IMAGE_ORDINAL_FLAG) == 0)
{
#if defined(__GNUC__)
if (util_is_bad_read_ptr((void*)import->Name))
continue;
#endif
if (strcmp((const char*)import->Name, function_name) == 0 && first_thunk->u1.Function)
{
return (FARPROC)first_thunk->u1.Function;
}
}
first_thunk++;
o_first_thunk++;
}
}
import_desc++;
}
}
__except (EXCEPTION_EXECUTE_HANDLER)
{
}
return NULL;
}
BOOL util_caller_is_ddraw_wrapper(void* return_address)
{
void* directDrawCreate = util_get_iat_proc(GetModuleHandleA(NULL), "ddraw.dll", "DirectDrawCreate");
void* directDrawCreateEx = util_get_iat_proc(GetModuleHandleA(NULL), "ddraw.dll", "DirectDrawCreateEx");
TRACE("%s directDrawCreate = %p, directDrawCreateEx = %p\n", __FUNCTION__, directDrawCreate, directDrawCreateEx);
HMODULE mod = NULL;
DWORD flags = GET_MODULE_HANDLE_EX_FLAG_FROM_ADDRESS | GET_MODULE_HANDLE_EX_FLAG_UNCHANGED_REFCOUNT;
HMODULE wndmode_dll = GetModuleHandleA("wndmode.dll");
if (wndmode_dll && GetModuleHandleExA(flags, returnAddress, &mod) && mod == wndmode_dll)
if (wndmode_dll)
{
MessageBoxA(
NULL,
"Error: You cannot combine cnc-ddraw with other DirectDraw wrappers. \n\n"
"Please remove/disable wndmode.dll and then try to start the game again.",
"Conflicting DirectDraw wrapper detected - cnc-ddraw",
MB_OK | MB_TOPMOST);
if ((GetModuleHandleExA(flags, return_address, &mod) && mod == wndmode_dll) ||
(GetModuleHandleExA(flags, directDrawCreate, &mod) && mod == wndmode_dll) ||
(GetModuleHandleExA(flags, directDrawCreateEx, &mod) && mod == wndmode_dll))
{
MessageBoxA(
NULL,
"Error: You cannot combine cnc-ddraw with other DirectDraw wrappers. \n\n"
"Please remove/disable wndmode.dll and then try to start the game again.",
"Conflicting DirectDraw wrapper detected - cnc-ddraw",
MB_OK | MB_TOPMOST);
return TRUE;
return TRUE;
}
}
HMODULE windmode_dll = GetModuleHandleA("windmode.dll");
if (windmode_dll && GetModuleHandleExA(flags, returnAddress, &mod) && mod == windmode_dll)
if (windmode_dll)
{
MessageBoxA(
NULL,
"Error: You cannot combine cnc-ddraw with other DirectDraw wrappers. \n\n"
"Please remove/disable windmode.dll and then try to start the game again.",
"Conflicting DirectDraw wrapper detected - cnc-ddraw",
MB_OK | MB_TOPMOST);
if ((GetModuleHandleExA(flags, return_address, &mod) && mod == windmode_dll) ||
(GetModuleHandleExA(flags, directDrawCreate, &mod) && mod == windmode_dll) ||
(GetModuleHandleExA(flags, directDrawCreateEx, &mod) && mod == windmode_dll))
{
MessageBoxA(
NULL,
"Error: You cannot combine cnc-ddraw with other DirectDraw wrappers. \n\n"
"Please remove/disable windmode.dll and then try to start the game again.",
"Conflicting DirectDraw wrapper detected - cnc-ddraw",
MB_OK | MB_TOPMOST);
return TRUE;
return TRUE;
}
}
HMODULE dxwnd_dll = GetModuleHandleA("dxwnd.dll");
if (dxwnd_dll && GetModuleHandleExA(flags, returnAddress, &mod) && mod == dxwnd_dll)
if (dxwnd_dll)
{
MessageBoxA(
NULL,
"Error: You cannot combine cnc-ddraw with other DirectDraw wrappers. \n\n"
"Please disable DxWnd and then try to start the game again.",
"Conflicting DirectDraw wrapper detected - cnc-ddraw",
MB_OK | MB_TOPMOST);
if ((GetModuleHandleExA(flags, return_address, &mod) && mod == dxwnd_dll) ||
(GetModuleHandleExA(flags, directDrawCreate, &mod) && mod == dxwnd_dll) ||
(GetModuleHandleExA(flags, directDrawCreateEx, &mod) && mod == dxwnd_dll))
{
MessageBoxA(
NULL,
"Error: You cannot combine cnc-ddraw with other DirectDraw wrappers. \n\n"
"Please disable DxWnd and then try to start the game again.",
"Conflicting DirectDraw wrapper detected - cnc-ddraw",
MB_OK | MB_TOPMOST);
return TRUE;
return TRUE;
}
}
HMODULE age_dll = GetModuleHandleA("age.dll");
if (age_dll && GetModuleHandleExA(flags, returnAddress, &mod) && mod == age_dll)
if (age_dll)
{
MessageBoxA(
NULL,
"Error: You cannot combine cnc-ddraw with other DirectDraw wrappers. \n\n"
"Please disable the other wrapper by clicking in the game room on the very top \n"
"on 'Game', now select 'DirectX' and disable 'Render in 32-bit color'.",
"Conflicting DirectDraw wrapper detected - cnc-ddraw",
MB_OK | MB_TOPMOST);
if ((GetModuleHandleExA(flags, return_address, &mod) && mod == age_dll) ||
(GetModuleHandleExA(flags, directDrawCreate, &mod) && mod == age_dll) ||
(GetModuleHandleExA(flags, directDrawCreateEx, &mod) && mod == age_dll))
{
MessageBoxA(
NULL,
"Error: You cannot combine cnc-ddraw with other DirectDraw wrappers. \n\n"
"Please disable the other wrapper by clicking in the game room on the very top \n"
"on 'Game', now select 'DirectX' and disable 'Render in 32-bit color'.",
"Conflicting DirectDraw wrapper detected - cnc-ddraw",
MB_OK | MB_TOPMOST);
return TRUE;
return TRUE;
}
}
return FALSE;