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init_security.py
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init_security.py
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# 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.
from __future__ import annotations
import logging
from importlib import import_module
from flask import g, redirect, url_for
from flask_login import logout_user
from airflow.configuration import conf
from airflow.exceptions import AirflowConfigException, AirflowException
log = logging.getLogger(__name__)
def init_xframe_protection(app):
"""
Add X-Frame-Options header. Use it to avoid click-jacking attacks, by ensuring that their content is not
embedded into other sites.
See also: https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/X-Frame-Options
"""
x_frame_enabled = conf.getboolean('webserver', 'X_FRAME_ENABLED', fallback=True)
if x_frame_enabled:
return
def apply_caching(response):
response.headers["X-Frame-Options"] = "DENY"
return response
app.after_request(apply_caching)
def init_api_experimental_auth(app):
"""Loads authentication backends"""
auth_backends = 'airflow.api.auth.backend.default'
try:
auth_backends = conf.get("api", "auth_backends")
except AirflowConfigException:
pass
app.api_auth = []
for backend in auth_backends.split(','):
try:
auth = import_module(backend.strip())
auth.init_app(app)
app.api_auth.append(auth)
except ImportError as err:
log.critical("Cannot import %s for API authentication due to: %s", backend, err)
raise AirflowException(err)
def init_check_user_active(app):
@app.before_request
def check_user_active():
if g.user is not None and not g.user.is_anonymous and not g.user.is_active:
logout_user()
return redirect(url_for(app.appbuilder.sm.auth_view.endpoint + ".login"))