forked from TeamTofuShop/segatools
idac: improved compatibility with newer versions
This commit is contained in:
260
idachook/indrun.c
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260
idachook/indrun.c
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#include <assert.h>
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#include <stdbool.h>
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#include "hook/table.h"
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#include "hooklib/dll.h"
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#include "util/dprintf.h"
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#include "indrun.h"
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static const wchar_t *target_modules[] = {
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L"IndRun.dll",
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};
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static const size_t target_modules_len = _countof(target_modules);
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static void dll_hook_insert_hooks(HMODULE target);
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static void app_hook_insert_hooks(HMODULE target);
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static HMODULE WINAPI hook_LoadLibraryW(const wchar_t *name);
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static HMODULE (WINAPI *next_LoadLibraryW)(const wchar_t *name);
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static int WINAPI hook_GetSystemMetrics(int nIndex);
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static int (WINAPI *next_GetSystemMetrics)(int nIndex);
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static BOOL WINAPI hook_GetComputerNameW(LPWSTR lpBuffer, LPDWORD nSize);
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static DWORD WINAPI hook_GetCurrentDirectoryW( DWORD nBufferLength, LPWSTR lpBuffer);
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static BOOL WINAPI hook_GetVersionExW(LPOSVERSIONINFOW lpVersionInformation);
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static int (WINAPI *next_GetVersionExW)(LPOSVERSIONINFOW lpVersionInformation);
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static BOOL WINAPI hook_VerifyVersionInfoW(LPOSVERSIONINFOEXW lpVersionInformation, DWORD dwTypeMask, DWORDLONG dwlConditionMask);
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static BOOL (WINAPI *next_VerifyVersionInfoW)(LPOSVERSIONINFOEXW lpVersionInformation, DWORD dwTypeMask, DWORDLONG dwlConditionMask);
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static BOOL WINAPI hook_K32EnumProcesses(DWORD *lpidProcess, DWORD cb, LPDWORD lpcbNeeded);
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static BOOL (WINAPI *next_K32EnumProcesses)(DWORD *lpidProcess, DWORD cb, LPDWORD lpcbNeeded);
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static BOOL WINAPI hook_GetUserNameW(LPWSTR lpBuffer, LPDWORD pcbBuffer);
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static const struct hook_symbol idac_app_user32_syms[] = {
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{
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.name = "GetSystemMetrics",
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.patch = hook_GetSystemMetrics,
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.link = (void **) &next_GetSystemMetrics,
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}
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};
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static const struct hook_symbol idac_app_kernel32_syms[] = {
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{
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.name = "GetComputerNameW",
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.patch = hook_GetComputerNameW,
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},
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{
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.name = "GetCurrentDirectoryW",
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.patch = hook_GetCurrentDirectoryW,
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},
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{
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.name = "GetVersionExW",
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.patch = hook_GetVersionExW,
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.link = (void **) &next_GetVersionExW,
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},
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{
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.name = "VerifyVersionInfoW",
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.patch = hook_VerifyVersionInfoW,
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.link = (void **) &next_VerifyVersionInfoW,
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},
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{
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.name = "K32EnumProcesses",
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.patch = hook_K32EnumProcesses,
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.link = (void **) &next_K32EnumProcesses,
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}
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};
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static const struct hook_symbol idac_app_advapi32_syms[] = {
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{
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.name = "GetUserNameW",
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.patch = hook_GetUserNameW,
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}
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};
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static const struct hook_symbol indrun_kernel32_syms[] = {
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{
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.name = "LoadLibraryW",
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.patch = hook_LoadLibraryW,
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.link = (void **) &next_LoadLibraryW,
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}
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};
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void indrun_hook_init(struct indrun_config *cfg)
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{
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assert(cfg != NULL);
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if (!cfg->enable) {
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return;
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}
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dprintf("IDAC: Hooks enabled.\n");
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// GameProject-Win64-Shipping.exe hooks
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app_hook_insert_hooks(NULL);
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// IndRun.dll hooks
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dll_hook_insert_hooks(NULL);
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}
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static void dll_hook_insert_hooks(HMODULE target) {
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hook_table_apply(
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target,
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"kernel32.dll",
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indrun_kernel32_syms,
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_countof(indrun_kernel32_syms));
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}
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void app_hook_insert_hooks(HMODULE target) {
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hook_table_apply(
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target,
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"user32.dll",
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idac_app_user32_syms,
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_countof(idac_app_user32_syms));
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hook_table_apply(
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target,
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"kernel32.dll",
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idac_app_kernel32_syms,
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_countof(idac_app_kernel32_syms));
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hook_table_apply(
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target,
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"advapi32.dll",
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idac_app_advapi32_syms,
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_countof(idac_app_advapi32_syms));
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}
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static HMODULE WINAPI hook_LoadLibraryW(const wchar_t *name)
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{
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const wchar_t *name_end;
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const wchar_t *target_module;
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bool already_loaded;
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HMODULE result;
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size_t name_len;
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size_t target_module_len;
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if (name == NULL) {
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SetLastError(ERROR_INVALID_PARAMETER);
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return NULL;
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}
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// Check if the module is already loaded
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already_loaded = GetModuleHandleW(name) != NULL;
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// Must call the next handler so the DLL reference count is incremented
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result = next_LoadLibraryW(name);
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if (!already_loaded && result != NULL) {
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name_len = wcslen(name);
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for (size_t i = 0; i < target_modules_len; i++) {
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target_module = target_modules[i];
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target_module_len = wcslen(target_module);
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// Check if the newly loaded library is at least the length of
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// the name of the target module
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if (name_len < target_module_len) {
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continue;
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}
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name_end = &name[name_len - target_module_len];
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// Check if the name of the newly loaded library is one of the
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// modules the path hooks should be injected into
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if (_wcsicmp(name_end, target_module) != 0) {
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continue;
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}
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dprintf("IDAC: Hooked %S\n", target_module);
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dll_hook_insert_hooks(result);
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app_hook_insert_hooks(result);
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}
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}
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return result;
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}
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static int WINAPI hook_GetSystemMetrics(int nIndex) {
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int ret = next_GetSystemMetrics(nIndex);
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// Disable mouse buttons detection
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if (nIndex == SM_CMOUSEBUTTONS) {
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dprintf("IDAC: GetSystemMetrics(%d) -> 0\n", nIndex);
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return 0;
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}
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return ret;
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}
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static BOOL WINAPI hook_GetComputerNameW(LPWSTR lpBuffer, LPDWORD nSize) {
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dprintf("IDAC: GetComputerNameW -> ACAE01A99999999\n");
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// Fake the computer name as ACAE01A999999999
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wcscpy(lpBuffer, L"ACAE01A999999999");
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*nSize = _countof(L"ACAE01A99999999");
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return TRUE;
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}
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static DWORD WINAPI hook_GetCurrentDirectoryW(DWORD nBufferLength, LPWSTR lpBuffer) {
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dprintf("IDAC: GetCurrentDirectoryW -> X:\\\n");
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// Fake the current diretory as X:
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wcscpy(lpBuffer, L"X");
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return 1;
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}
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static BOOL WINAPI hook_GetVersionExW(LPOSVERSIONINFOW lpVersionInformation) {
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int result = next_GetVersionExW(lpVersionInformation);
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// Fake the version as Windows 10 1809
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if (result) {
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dprintf("IDAC: GetVersionExW -> Windows 10 1809\n");
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lpVersionInformation->dwMajorVersion = 10;
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lpVersionInformation->dwMinorVersion = 0;
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lpVersionInformation->dwBuildNumber = 17763;
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return TRUE;
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}
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return result;
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}
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static BOOL WINAPI hook_GetUserNameW(LPWSTR lpBuffer, LPDWORD pcbBuffer) {
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dprintf("IDAC: GetUserNameW -> AppUser\n");
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// Fake the user name as AppUser
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wcscpy(lpBuffer, L"AppUser");
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*pcbBuffer = _countof(L"AppUser");
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return TRUE;
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}
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static BOOL WINAPI hook_VerifyVersionInfoW(LPOSVERSIONINFOEXW lpVersionInformation, DWORD dwTypeMask, DWORDLONG dwlConditionMask) {
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BOOL result = next_VerifyVersionInfoW(lpVersionInformation, dwTypeMask, dwlConditionMask);
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// Fake the version as Windows 10 1809
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if (lpVersionInformation->dwBuildNumber == 17763) {
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dprintf("IDAC: VerifyVersionInfoW -> Windows 10 1809\n");
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return TRUE;
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}
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return result;
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}
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static BOOL WINAPI hook_K32EnumProcesses(DWORD *lpidProcess, DWORD cb, LPDWORD lpcbNeeded) {
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BOOL result = next_K32EnumProcesses(lpidProcess, cb, lpcbNeeded);
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// Rteurn an empy process list
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dprintf("IDAC: K32EnumProcesses -> NULL\n");
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lpidProcess = NULL;
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*lpcbNeeded = 0;
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return TRUE;
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}
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