forked from Hay1tsme/segatools
126 lines
3.1 KiB
C
126 lines
3.1 KiB
C
#include <windows.h>
|
|
|
|
#include <assert.h>
|
|
#include <stdbool.h>
|
|
#include <stdlib.h>
|
|
|
|
#include "mercuryhook/elisabeth.h"
|
|
|
|
#include "hook/table.h"
|
|
|
|
#include "hooklib/dll.h"
|
|
#include "hooklib/path.h"
|
|
#include "hooklib/setupapi.h"
|
|
|
|
#include "util/dprintf.h"
|
|
|
|
/* Hooks targeted DLLs dynamically loaded by elisabeth. */
|
|
|
|
static void dll_hook_insert_hooks(HMODULE target);
|
|
static HMODULE WINAPI my_LoadLibraryW(const wchar_t *name);
|
|
static HMODULE (WINAPI *next_LoadLibraryW)(const wchar_t *name);
|
|
static FARPROC WINAPI my_GetProcAddress(HMODULE hModule, const char *name);
|
|
static FARPROC (WINAPI *next_GetProcAddress)(HMODULE hModule, const char *name);
|
|
|
|
static const struct hook_symbol win32_hooks[] = {
|
|
{
|
|
.name = "LoadLibraryW",
|
|
.patch = my_LoadLibraryW,
|
|
.link = (void **) &next_LoadLibraryW,
|
|
},
|
|
{
|
|
.name = "GetProcAddress",
|
|
.patch = my_GetProcAddress,
|
|
.link = (void **) &next_GetProcAddress
|
|
}
|
|
};
|
|
|
|
static const wchar_t *target_modules[] = {
|
|
L"USBIntLED.DLL",
|
|
L"ftd2XX.dll",
|
|
};
|
|
|
|
static const size_t target_modules_len = _countof(target_modules);
|
|
|
|
void elisabeth_hook_init()
|
|
{
|
|
dll_hook_insert_hooks(NULL);
|
|
}
|
|
|
|
static void dll_hook_insert_hooks(HMODULE target)
|
|
{
|
|
hook_table_apply(
|
|
target,
|
|
"kernel32.dll",
|
|
win32_hooks,
|
|
_countof(win32_hooks));
|
|
}
|
|
|
|
static HMODULE WINAPI my_LoadLibraryW(const wchar_t *name)
|
|
{
|
|
const wchar_t *name_end;
|
|
const wchar_t *target_module;
|
|
bool already_loaded;
|
|
HMODULE result;
|
|
size_t name_len;
|
|
size_t target_module_len;
|
|
|
|
dprintf("Elisabeth: Trying to load %S\n", name);
|
|
|
|
if (name == NULL) {
|
|
SetLastError(ERROR_INVALID_PARAMETER);
|
|
|
|
return NULL;
|
|
}
|
|
|
|
// Check if the module is already loaded
|
|
already_loaded = GetModuleHandleW(name) != NULL;
|
|
|
|
// Must call the next handler so the DLL reference count is incremented
|
|
result = next_LoadLibraryW(name);
|
|
|
|
if (!already_loaded && result != NULL) {
|
|
name_len = wcslen(name);
|
|
|
|
for (size_t i = 0; i < target_modules_len; i++) {
|
|
target_module = target_modules[i];
|
|
target_module_len = wcslen(target_module);
|
|
|
|
// Check if the newly loaded library is at least the length of
|
|
// the name of the target module
|
|
if (name_len < target_module_len) {
|
|
continue;
|
|
}
|
|
|
|
name_end = &name[name_len - target_module_len];
|
|
|
|
// Check if the name of the newly loaded library is one of the
|
|
// modules the path hooks should be injected into
|
|
if (_wcsicmp(name_end, target_module) != 0) {
|
|
continue;
|
|
}
|
|
|
|
dprintf("Elisabeth: Loaded %S\n", target_module);
|
|
|
|
dll_hook_insert_hooks(result);
|
|
setupapi_hook_insert_hooks(result);
|
|
}
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
FARPROC WINAPI my_GetProcAddress(HMODULE hModule, const char *name)
|
|
{
|
|
uintptr_t ordinal = (uintptr_t) name;
|
|
|
|
FARPROC result = next_GetProcAddress(hModule, name);
|
|
|
|
if (ordinal > 0xFFFF) {
|
|
/* Import by name */
|
|
dprintf("Elisabeth: GetProcAddress %s is %p\n", name, result);
|
|
}
|
|
|
|
return result;
|
|
}
|