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try to use hook=3 by default

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This commit is contained in:
FunkyFr3sh 2023-08-13 20:31:26 +02:00
parent b42c3e1d49
commit 97a81b67b5
3 changed files with 51 additions and 11 deletions
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50
src/hook.c
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@ -364,6 +364,45 @@ void hook_patch_iat_list(HMODULE hmod, BOOL unhook, HOOKLIST* hooks)
}
}
BOOL hook_got_ddraw_import()
{
__try
{
HMODULE hmod = GetModuleHandleA(NULL);
PIMAGE_DOS_HEADER dos_header = (PIMAGE_DOS_HEADER)hmod;
if (dos_header->e_magic != IMAGE_DOS_SIGNATURE)
return FALSE;
PIMAGE_NT_HEADERS nt_headers = (PIMAGE_NT_HEADERS)((DWORD)dos_header + (DWORD)dos_header->e_lfanew);
if (nt_headers->Signature != IMAGE_NT_SIGNATURE)
return FALSE;
PIMAGE_IMPORT_DESCRIPTOR import_desc = (PIMAGE_IMPORT_DESCRIPTOR)((DWORD)dos_header +
(DWORD)(nt_headers->OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_IMPORT].VirtualAddress));
if (import_desc == (PIMAGE_IMPORT_DESCRIPTOR)nt_headers)
return FALSE;
while (import_desc->FirstThunk)
{
char* imp_module_name = (char*)((DWORD)dos_header + (DWORD)(import_desc->Name));
if (_stricmp(imp_module_name, "ddraw.dll") == 0)
{
return TRUE;
}
import_desc++;
}
}
__except (EXCEPTION_EXECUTE_HANDLER)
{
}
return FALSE;
}
void hook_create(HOOKLIST* hooks, BOOL initial_hook)
{
#ifdef _MSC_VER
@ -525,6 +564,17 @@ void hook_revert(HOOKLIST* hooks)
void hook_init(BOOL initial_hook)
{
if (initial_hook)
{
g_hook_method = cfg_get_int("hook", 4);
if (g_hook_method == 4 && hook_got_ddraw_import())
{
/* Switch to 3 if we can be sure that ddraw.dll will not be unloaded from the process */
g_hook_method = 3;
}
}
if (!g_hook_active || g_hook_method == 3 || g_hook_method == 4)
{
#if defined(_DEBUG) && defined(_MSC_VER)