utils.py 文件源码

def get_safe_redirect():
    """https://security.openstack.org/guidelines/dg_avoid-unvalidated-redirects.html"""  # noqa
    url = request.args.get('next')
    if url and is_safe_redirect_url(url):
        return url

    url = request.referrer
    if url and is_safe_redirect_url(url):
        return url

    return '/'