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hook dinput8.dll for Knights and Merchants

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FunkyFr3sh 2021-05-01 00:15:01 +02:00
parent b7f485d935
commit 9be9c6c00e
1 changed files with 25 additions and 0 deletions
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25
src/directinput.c
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@ -6,11 +6,13 @@
#include "dd.h"
typedef HRESULT (WINAPI *DIRECTINPUTCREATEAPROC)(HINSTANCE, DWORD, LPDIRECTINPUTA*, LPUNKNOWN);
typedef HRESULT (WINAPI *DIRECTINPUT8CREATEPROC)(HINSTANCE, DWORD, REFIID, LPVOID*, LPUNKNOWN);
typedef HRESULT (WINAPI *DICREATEDEVICEPROC)(IDirectInputA*, REFGUID, LPDIRECTINPUTDEVICEA *, LPUNKNOWN);
typedef HRESULT (WINAPI *DIDSETCOOPERATIVELEVELPROC)(IDirectInputDeviceA *, HWND, DWORD);
typedef HRESULT (WINAPI *DIDGETDEVICEDATAPROC)(IDirectInputDeviceA*, DWORD, LPDIDEVICEOBJECTDATA, LPDWORD, DWORD);
static DIRECTINPUTCREATEAPROC real_DirectInputCreateA;
static DIRECTINPUT8CREATEPROC real_DirectInput8Create;
static DICREATEDEVICEPROC real_di_CreateDevice;
static DIDSETCOOPERATIVELEVELPROC real_did_SetCooperativeLevel;
static DIDGETDEVICEDATAPROC real_did_GetDeviceData;
@ -87,12 +89,35 @@ static HRESULT WINAPI fake_DirectInputCreateA(HINSTANCE hinst, DWORD dwVersion,
return result;
}
HRESULT WINAPI fake_DirectInput8Create(HINSTANCE hinst, DWORD dwVersion, REFIID riidltf, LPDIRECTINPUT8* ppvOut, LPUNKNOWN punkOuter)
{
dprintf("DirectInput8Create\n");
real_DirectInput8Create =
(DIRECTINPUTCREATEAPROC)GetProcAddress(GetModuleHandle("dinput8.dll"), "DirectInput8Create");
if (!real_DirectInput8Create)
return DIERR_GENERIC;
HRESULT result = real_DirectInput8Create(hinst, dwVersion, riidltf, ppvOut, punkOuter);
if (SUCCEEDED(result) && !real_di_CreateDevice)
{
real_di_CreateDevice =
(DICREATEDEVICEPROC)hook_func((PROC*)&(*ppvOut)->lpVtbl->CreateDevice, (PROC)fake_di_CreateDevice);
}
return result;
}
void dinput_hook()
{
hook_patch_iat(GetModuleHandle(NULL), FALSE, "dinput.dll", "DirectInputCreateA", (PROC)fake_DirectInputCreateA);
hook_patch_iat(GetModuleHandle(NULL), FALSE, "dinput8.dll", "DirectInput8Create", (PROC)fake_DirectInput8Create);
}
void dinput_unhook()
{
hook_patch_iat(GetModuleHandle(NULL), TRUE, "dinput.dll", "DirectInputCreateA", (PROC)fake_DirectInputCreateA);
hook_patch_iat(GetModuleHandle(NULL), TRUE, "dinput8.dll", "DirectInput8Create", (PROC)fake_DirectInput8Create);
}