| # |
| # Licensed to the Apache Software Foundation (ASF) under one |
| # or more contributor license agreements. See the NOTICE file |
| # distributed with this work for additional information |
| # regarding copyright ownership. The ASF licenses this file |
| # to you under the Apache License, Version 2.0 (the |
| # "License"); you may not use this file except in compliance |
| # with the License. You may obtain a copy of the License at |
| # |
| # http://www.apache.org/licenses/LICENSE-2.0 |
| # |
| # Unless required by applicable law or agreed to in writing, |
| # software distributed under the License is distributed on an |
| # "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| # KIND, either express or implied. See the License for the |
| # specific language governing permissions and limitations |
| # under the License. |
| """Default authentication backend - everything is allowed""" |
| import logging |
| from functools import wraps |
| from typing import Callable, Optional, Tuple, TypeVar, Union, cast |
| |
| from flask import Response, current_app, request |
| from flask_login import login_user |
| from requests.auth import AuthBase |
| |
| log = logging.getLogger(__name__) |
| |
| CLIENT_AUTH: Optional[Union[Tuple[str, str], AuthBase]] = None |
| |
| |
| def init_app(_): |
| """Initializes authentication backend""" |
| |
| |
| T = TypeVar("T", bound=Callable) # pylint: disable=invalid-name |
| |
| |
| def _lookup_user(user_email_or_username: str): |
| security_manager = current_app.appbuilder.sm |
| user = ( |
| security_manager.find_user(email=user_email_or_username) |
| or security_manager.find_user(username=user_email_or_username) |
| ) |
| if not user: |
| return None |
| |
| if not user.is_active: |
| return None |
| |
| return user |
| |
| |
| def requires_authentication(function: T): |
| """Decorator for functions that require authentication""" |
| @wraps(function) |
| def decorated(*args, **kwargs): |
| user_id = request.remote_user |
| if not user_id: |
| log.debug("Missing REMOTE_USER.") |
| return Response("Forbidden", 403) |
| |
| log.debug("Looking for user: %s", user_id) |
| |
| user = _lookup_user(user_id) |
| if not user: |
| return Response("Forbidden", 403) |
| |
| log.debug("Found user: %s", user) |
| |
| login_user(user, remember=False) |
| return function(*args, **kwargs) |
| |
| return cast(T, decorated) |