flask_openid.py 文件源码

def get_next_url(self):
        """Returns the URL where we want to redirect to.  This will
        always return a valid URL.
        """
        return (
            self.check_safe_root(request.values.get('next')) or
            self.check_safe_root(request.referrer) or
            (self.fallback_endpoint and
             self.check_safe_root(url_for(self.fallback_endpoint))) or
            request.url_root
        )