|
| 1 | +/* |
| 2 | + * No-Registry Patch for Fallout New Vegas |
| 3 | + * |
| 4 | + * Copyright (C) 2021-2023 TANGaming <https://github.com/TAN-Gaming> |
| 5 | + * |
| 6 | + * Permission is hereby granted, free of charge, to any person obtaining a copy |
| 7 | + * of this software and associated documentation files (the "Software"), to deal |
| 8 | + * in the Software without restriction, including without limitation the rights |
| 9 | + * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
| 10 | + * copies of the Software, and to permit persons to whom the Software is |
| 11 | + * furnished to do so, subject to the following conditions: |
| 12 | + * |
| 13 | + * The above copyright notice and this permission notice shall be included in all |
| 14 | + * copies or substantial portions of the Software. |
| 15 | + * |
| 16 | + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| 17 | + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 18 | + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
| 19 | + * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| 20 | + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
| 21 | + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
| 22 | + * SOFTWARE. |
| 23 | + */ |
| 24 | + |
| 25 | +#include <windows.h> |
| 26 | +#include <strsafe.h> |
| 27 | + |
| 28 | +#include <MinHook.h> |
| 29 | + |
| 30 | +typedef LONG (WINAPI *PFREGOPENKEYEXW)(HKEY, LPCWSTR, DWORD, REGSAM, PHKEY); |
| 31 | +typedef LONG (WINAPI *PFREGQUERYVALUEEXW)(HKEY, LPCWSTR, LPDWORD, LPDWORD, LPBYTE, LPDWORD); |
| 32 | +typedef LONG (WINAPI *PFREGCLOSEKEY)(HKEY); |
| 33 | + |
| 34 | +/* For calling original functions */ |
| 35 | +PFREGOPENKEYEXW Real_RegOpenKeyExW = NULL; |
| 36 | +PFREGQUERYVALUEEXW Real_RegQueryValueExW = NULL; |
| 37 | +PFREGCLOSEKEY Real_RegCloseKey = NULL; |
| 38 | + |
| 39 | +BOOL bUseHooked = FALSE; |
| 40 | +LPWSTR pszGameDir = NULL; |
| 41 | + |
| 42 | +LPWSTR NoRegPatch_GetGameDir(void) |
| 43 | +{ |
| 44 | + DWORD dwRet; |
| 45 | + LPWSTR pszPath; |
| 46 | + |
| 47 | + dwRet = GetCurrentDirectoryW(0, NULL); |
| 48 | + if (dwRet == 0) |
| 49 | + return NULL; |
| 50 | + |
| 51 | + /* NOTE: Included the length of '\' (1) */ |
| 52 | + pszPath = HeapAlloc(GetProcessHeap(), 0, (dwRet + 1) * sizeof(WCHAR)); |
| 53 | + if (!pszPath) |
| 54 | + return NULL; |
| 55 | + |
| 56 | + if (GetCurrentDirectoryW(dwRet, pszPath) == 0) |
| 57 | + { |
| 58 | + HeapFree(GetProcessHeap(), 0, pszPath); |
| 59 | + return NULL; |
| 60 | + } |
| 61 | + |
| 62 | + StringCchCatW(pszPath, dwRet + 1, L"\\"); |
| 63 | + |
| 64 | + return pszPath; |
| 65 | +} |
| 66 | + |
| 67 | +/* Hooked RegOpenKeyExW */ |
| 68 | +LONG WINAPI Hooked_RegOpenKeyExW(HKEY hKey, LPCWSTR lpSubKey, DWORD ulOptions, REGSAM samDesired, PHKEY phkResult) |
| 69 | +{ |
| 70 | + if (_wcsicmp(lpSubKey, L"Software\\Bethesda Softworks\\FalloutNV") == 0) |
| 71 | + { |
| 72 | + bUseHooked = TRUE; |
| 73 | + return ERROR_SUCCESS; |
| 74 | + } |
| 75 | + |
| 76 | + return Real_RegOpenKeyExW(hKey, lpSubKey, ulOptions, samDesired, phkResult); |
| 77 | +} |
| 78 | + |
| 79 | +/* Hooked RegQueryValueExW */ |
| 80 | +LONG WINAPI Hooked_RegQueryValueExW(HKEY hKey, LPCWSTR lpValueName, LPDWORD lpReserved, LPDWORD lpType, LPBYTE lpData, LPDWORD lpcbData) |
| 81 | +{ |
| 82 | + if (bUseHooked) |
| 83 | + { |
| 84 | + if (wcscmp(lpValueName, L"Installed Path") == 0) |
| 85 | + { |
| 86 | + DWORD cbData = (wcslen(pszGameDir) + 1) * sizeof(WCHAR); |
| 87 | + |
| 88 | + if (!lpData && lpcbData) |
| 89 | + { |
| 90 | + *lpcbData = cbData; |
| 91 | + return ERROR_SUCCESS; |
| 92 | + } |
| 93 | + else if (lpData && (lpcbData && (*lpcbData >= cbData))) |
| 94 | + { |
| 95 | + memcpy(lpData, pszGameDir, cbData); |
| 96 | + *lpcbData = cbData; |
| 97 | + return ERROR_SUCCESS; |
| 98 | + } |
| 99 | + } |
| 100 | + } |
| 101 | + |
| 102 | + return Real_RegQueryValueExW(hKey, lpValueName, lpReserved, lpType, lpData, lpcbData); |
| 103 | +} |
| 104 | + |
| 105 | +/* Hooked RegCloseKey */ |
| 106 | +LONG WINAPI Hooked_RegCloseKey(HKEY hKey) |
| 107 | +{ |
| 108 | + bUseHooked = FALSE; |
| 109 | + return Real_RegCloseKey(hKey); |
| 110 | +} |
| 111 | + |
| 112 | +void NoRegPatch_Init(void) |
| 113 | +{ |
| 114 | + /* Get game folder path */ |
| 115 | + pszGameDir = NoRegPatch_GetGameDir(); |
| 116 | + if (!pszGameDir) |
| 117 | + { |
| 118 | + MessageBoxW(NULL, L"Failed to retrieve the game directory.", L"NoRegPatch", MB_ICONERROR | MB_OK); |
| 119 | + TerminateProcess(GetCurrentProcess(), 0); |
| 120 | + } |
| 121 | + |
| 122 | + /* Initialize MinHook */ |
| 123 | + if (MH_Initialize() != MH_OK) |
| 124 | + { |
| 125 | + MessageBoxW(NULL, L"Failed to initialize MinHook.", L"NoRegPatch", MB_ICONERROR | MB_OK); |
| 126 | + TerminateProcess(GetCurrentProcess(), 0); |
| 127 | + } |
| 128 | + |
| 129 | + MH_CreateHook((LPVOID*)(&RegOpenKeyExW), (LPVOID*)(&Hooked_RegOpenKeyExW), (LPVOID*)(&Real_RegOpenKeyExW)); |
| 130 | + MH_CreateHook((LPVOID*)(&RegQueryValueExW), (LPVOID*)(&Hooked_RegQueryValueExW), (LPVOID*)(&Real_RegQueryValueExW)); |
| 131 | + MH_CreateHook((LPVOID*)(&RegCloseKey), (LPVOID*)(&Hooked_RegCloseKey), (LPVOID*)(&Real_RegCloseKey)); |
| 132 | + |
| 133 | + MH_EnableHook(MH_ALL_HOOKS); |
| 134 | +} |
| 135 | + |
| 136 | +void NoRegPatch_Uninit(void) |
| 137 | +{ |
| 138 | + MH_DisableHook(MH_ALL_HOOKS); |
| 139 | + |
| 140 | + /* Uninitialize MinHook. */ |
| 141 | + MH_Uninitialize(); |
| 142 | + |
| 143 | + HeapFree(GetProcessHeap(), 0, pszGameDir); |
| 144 | +} |
| 145 | + |
| 146 | +/* DLL entry point */ |
| 147 | +BOOL WINAPI DllMain(HINSTANCE hInstDLL, DWORD dwReason, LPVOID lpReserved) |
| 148 | +{ |
| 149 | + if (dwReason == DLL_PROCESS_ATTACH) |
| 150 | + { |
| 151 | + NoRegPatch_Init(); |
| 152 | + } |
| 153 | + else if (dwReason == DLL_PROCESS_DETACH) |
| 154 | + { |
| 155 | + NoRegPatch_Uninit(); |
| 156 | + } |
| 157 | + |
| 158 | + return TRUE; |
| 159 | +} |
0 commit comments