Initializes module list Needs to be called before any calls to Get or GetAll
| 19 | // Initializes module list |
| 20 | // Needs to be called before any calls to Get or GetAll |
| 21 | void Enumerate(SearchLocation location = SearchLocation::All) |
| 22 | { |
| 23 | constexpr size_t INITIAL_SIZE = sizeof(HMODULE) * 256; |
| 24 | HMODULE* modules = static_cast<HMODULE*>(malloc(INITIAL_SIZE)); |
| 25 | if (modules != nullptr) |
| 26 | { |
| 27 | typedef BOOL(WINAPI * Func)(HANDLE hProcess, HMODULE *lphModule, DWORD cb, LPDWORD lpcbNeeded); |
| 28 | |
| 29 | HMODULE hLib = LoadLibrary(TEXT("kernel32")); |
| 30 | assert(hLib != nullptr); // If this fails then everything is probably broken anyway |
| 31 | |
| 32 | Func pEnumProcessModules = reinterpret_cast<Func>(GetProcAddress(hLib, "K32EnumProcessModules")); |
| 33 | if (pEnumProcessModules == nullptr) |
| 34 | { |
| 35 | // Try psapi |
| 36 | FreeLibrary(hLib); |
| 37 | hLib = LoadLibrary(TEXT("psapi")); |
| 38 | if (hLib != nullptr) |
| 39 | { |
| 40 | pEnumProcessModules = reinterpret_cast<Func>(GetProcAddress(hLib, "EnumProcessModules")); |
| 41 | } |
| 42 | } |
| 43 | |
| 44 | if (pEnumProcessModules != nullptr) |
| 45 | { |
| 46 | const HANDLE currentProcess = GetCurrentProcess(); |
| 47 | DWORD cbNeeded = 0; |
| 48 | if (pEnumProcessModules(currentProcess, modules, INITIAL_SIZE, &cbNeeded) != 0) |
| 49 | { |
| 50 | if (cbNeeded > INITIAL_SIZE) |
| 51 | { |
| 52 | HMODULE* newModules = static_cast<HMODULE*>(realloc(modules, cbNeeded)); |
| 53 | if (newModules != nullptr) |
| 54 | { |
| 55 | modules = newModules; |
| 56 | |
| 57 | if (pEnumProcessModules(currentProcess, modules, cbNeeded, &cbNeeded) != 0) |
| 58 | { |
| 59 | EnumerateInternal(modules, location, cbNeeded / sizeof(HMODULE)); |
| 60 | } |
| 61 | } |
| 62 | } |
| 63 | else |
| 64 | { |
| 65 | EnumerateInternal(modules, location, cbNeeded / sizeof(HMODULE)); |
| 66 | } |
| 67 | } |
| 68 | } |
| 69 | |
| 70 | if (hLib != nullptr) |
| 71 | { |
| 72 | FreeLibrary(hLib); |
| 73 | } |
| 74 | |
| 75 | free(modules); |
| 76 | } |
| 77 | } |
| 78 |