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# vim: tabstop=4 shiftwidth=4 softtabstop=4
# Copyright 2011 United States Government as represented by the
# Administrator of the National Aeronautics and Space Administration.
# All Rights Reserved.
#
# Copyright 2011 Nebula, Inc.
#
# 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.
from django.contrib import messages
from django import shortcuts
from django.utils.translation import ugettext as _
import openstackx
import openstack
class User(object):
def __init__(self, token=None, user=None, tenant_id=None, admin=None,
service_catalog=None, tenant_name=None):
self.token = token
self.username = user
self.tenant_id = tenant_id
self.tenant_name = tenant_name
self.admin = admin
self.service_catalog = service_catalog
def is_authenticated(self):
# TODO: deal with token expiration
return self.token
def is_admin(self):
return self.admin
def get_user_from_request(request):
if 'user' not in request.session:
return User()
return User(token=request.session['token'],
user=request.session['user'],
tenant_id=request.session['tenant_id'],
tenant_name=request.session['tenant'],
admin=request.session['admin'],
service_catalog=request.session['serviceCatalog'])
class LazyUser(object):
def __get__(self, request, obj_type=None):
if not hasattr(request, '_cached_user'):
request._cached_user = get_user_from_request(request)
return request._cached_user
class AuthenticationMiddleware(object):
def process_request(self, request):
request.__class__.user = LazyUser()
def process_exception(self, request, exception):
if type(exception) in [openstack.compute.exceptions.Forbidden,
openstackx.api.exceptions.Forbidden]:
# flush other error messages, which are collateral damage
# when our token expires
for message in messages.get_messages(request):
pass
messages.error(request,
_('Your token has expired. Please log in again'))
return shortcuts.redirect('/auth/logout')
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