    bool PamBackend::authenticate() {
        if (!m_pam->authenticate()) {
            m_app->error(m_pam->errorString(), Auth::ERROR_AUTHENTICATION);
            return false;
        }
        if (!m_pam->acctMgmt()) {
            m_app->error(m_pam->errorString(), Auth::ERROR_AUTHENTICATION);
            return false;
        }
        return true;
    }
Unknown