Function _probe_xdg_folder

scapy/main.py:67–82

(var, default, *cf)

def _probe_xdg_folder(var, default, *cf):
    # type: (str, str, *str) -> Optional[pathlib.Path]
    path = pathlib.Path(os.environ.get(var, default))
    try:
        if not path.exists():
            # ~ folder doesn't exist. Create according to spec
            # https://specifications.freedesktop.org/basedir-spec/basedir-spec-latest.html
            # "If, when attempting to write a file, the destination directory is
            # non-existent an attempt should be made to create it with permission 0700."
            path.mkdir(mode=0o700, exist_ok=True)
    except Exception:
        # There is a gazillion ways this can fail. Most notably, a read-only fs or no
        # permissions to even check for folder to exist (e.x. privileges were dropped
        # before scapy was started).
        return None
    return path.joinpath(*cf).resolve()


def _probe_config_folder(*cf):