73 lines
2.3 KiB
Python
73 lines
2.3 KiB
Python
# Copyright 2017 AT&T Intellectual Property. All other rights reserved.
|
|
#
|
|
# Licensed 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.
|
|
|
|
import falcon
|
|
|
|
class AuthMiddleware(object):
|
|
|
|
# Authentication
|
|
def process_request(self, req, resp):
|
|
ctx = req.context
|
|
token = req.get_header('X-Auth-Token')
|
|
|
|
user = self.validate_token(token)
|
|
|
|
if user is not None:
|
|
ctx.set_user(user)
|
|
user_roles = self.role_list(user)
|
|
ctx.add_roles(user_roles)
|
|
else:
|
|
ctx.add_role('anyone')
|
|
|
|
# Authorization
|
|
def process_resource(self, req, resp, resource):
|
|
ctx = req.context
|
|
|
|
if not resource.authorize_roles(ctx.roles):
|
|
raise falcon.HTTPUnauthorized('Authentication required',
|
|
('This resource requires an authorized role.'))
|
|
|
|
# Return the username associated with an authenticated token or None
|
|
def validate_token(self, token):
|
|
if token == '42':
|
|
return 'scott'
|
|
elif token == 'bigboss':
|
|
return 'admin'
|
|
else:
|
|
return None
|
|
|
|
# Return the list of roles assigned to the username
|
|
# Roles need to be an enum
|
|
def role_list(self, username):
|
|
if username == 'scott':
|
|
return ['user']
|
|
elif username == 'admin':
|
|
return ['user', 'admin']
|
|
|
|
class ContextMiddleware(object):
|
|
|
|
def process_request(self, req, resp):
|
|
ctx = req.context
|
|
|
|
requested_logging = req.get_header('X-Log-Level')
|
|
|
|
if requested_logging == 'DEBUG' and 'admin' in ctx.roles:
|
|
ctx.set_log_level('debug')
|
|
elif requested_logging == 'INFO':
|
|
ctx.set_log_level('info')
|
|
|
|
class LoggingMiddleware(object):
|
|
|
|
def process_response(self, req, resp, resource, req_succeeded):
|
|
ctx = req.context |