bool getParentProcessID()

in src/main/cpp/bootstrap/utilsfuncs.cpp [389:435]
39 lines of code
9 McCabe index (conditional complexity)

bool getParentProcessID(DWORD &id) {
    typedef HANDLE (WINAPI * CreateToolhelp32SnapshotT)(DWORD, DWORD);
    typedef BOOL (WINAPI * Process32FirstT)(HANDLE, LPPROCESSENTRY32);
    typedef BOOL (WINAPI * Process32NextT)(HANDLE, LPPROCESSENTRY32);

    HINSTANCE hKernel32 = GetModuleHandle("kernel32");
    if (!hKernel32) {
        return false;
    }

    CreateToolhelp32SnapshotT createToolhelp32Snapshot = (CreateToolhelp32SnapshotT) GetProcAddress(hKernel32, "CreateToolhelp32Snapshot");
    Process32FirstT process32First = (Process32FirstT) GetProcAddress(hKernel32, "Process32First");
    Process32NextT process32Next = (Process32NextT) GetProcAddress(hKernel32, "Process32Next");

    if (createToolhelp32Snapshot == NULL || process32First == NULL || process32Next == NULL) {
        logErr(true, false, "Failed to obtain Toolhelp32 functions.");
        return false;
    }

    HANDLE hSnapshot = createToolhelp32Snapshot(TH32CS_SNAPPROCESS, 0);
    if (hSnapshot == INVALID_HANDLE_VALUE) {
        logErr(true, false, "Failed to obtain process snapshot.");
        return false;
    }

    PROCESSENTRY32 entry = {0};
    entry.dwSize = sizeof (PROCESSENTRY32);
    if (!process32First(hSnapshot, &entry)) {
        CloseHandle(hSnapshot);
        return false;
    }

    DWORD curID = GetCurrentProcessId();
    logMsg("Current process ID: %u", curID);

    do {
        if (entry.th32ProcessID == curID) {
            id = entry.th32ParentProcessID;
            logMsg("Parent process ID: %u", id);
            CloseHandle(hSnapshot);
            return true;
        }
    } while (process32Next(hSnapshot, &entry));

    CloseHandle(hSnapshot);
    return false;
}