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Simplify DLL hook mechanism

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This change deletes the GetProcAddress hook and exports symbols
corresponding to the hooked functions from each hook DLL instead;
we stop at redirecting LoadLibrary/GetModuleHandle calls to the
hook DLL. This simplified approach has less hidden magic going on
behind the scenes and is more readily composable (i.e. a hook DLL
can export redirect symbols for more than one dynamically-loaded
DLL).
This commit is contained in:
Tau
2021-05-22 12:29:39 -04:00
parent b4cd868f85
commit 45e2416702
11 changed files with 84 additions and 126 deletions
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13
hooklib/gfx.c
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@ -24,21 +24,20 @@ static HRESULT STDMETHODCALLTYPE my_CreateDevice(
DWORD flags,
D3DPRESENT_PARAMETERS *pp,
IDirect3DDevice9 **pdev);
static IDirect3D9 * WINAPI my_Direct3DCreate9(UINT sdk_ver);
static Direct3DCreate9_t next_Direct3DCreate9;
static HRESULT gfx_frame_window(HWND hwnd);
static struct gfx_config gfx_config;
static Direct3DCreate9_t next_Direct3DCreate9;
static const struct hook_symbol gfx_hooks[] = {
{
.name = "Direct3DCreate9",
.patch = my_Direct3DCreate9,
.patch = Direct3DCreate9,
.link = (void **) &next_Direct3DCreate9
},
};
void gfx_hook_init(const struct gfx_config *cfg)
void gfx_hook_init(const struct gfx_config *cfg, HINSTANCE self)
{
HMODULE d3d9;
@ -71,13 +70,15 @@ void gfx_hook_init(const struct gfx_config *cfg)
}
}
dll_hook_push(NULL, L"d3d9.dll", gfx_hooks, _countof(gfx_hooks));
if (self != NULL) {
dll_hook_push(self, L"d3d9.dll");
}
fail:
return;
}
static IDirect3D9 * WINAPI my_Direct3DCreate9(UINT sdk_ver)
IDirect3D9 * WINAPI Direct3DCreate9(UINT sdk_ver)
{
struct com_proxy *proxy;
IDirect3D9Vtbl *vtbl;