148 lines
5.5 KiB
Python
148 lines
5.5 KiB
Python
# Copyright 2011-2012 OpenStack LLC.
|
|
# All 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 uuid
|
|
|
|
from oslo_config import cfg
|
|
import webob.exc
|
|
|
|
from barbican.api import middleware as mw
|
|
from barbican.common import utils
|
|
import barbican.context
|
|
from barbican import i18n as u
|
|
|
|
LOG = utils.getLogger(__name__)
|
|
|
|
# TODO(jwood) Need to figure out why config is ignored in this module.
|
|
context_opts = [
|
|
cfg.StrOpt('admin_role', default='admin',
|
|
help=u._('Role used to identify an authenticated user as '
|
|
'administrator.')),
|
|
cfg.BoolOpt('allow_anonymous_access', default=False,
|
|
help=u._('Allow unauthenticated users to access the API with '
|
|
'read-only privileges. This only applies when using '
|
|
'ContextMiddleware.')),
|
|
]
|
|
|
|
|
|
CONF = cfg.CONF
|
|
CONF.register_opts(context_opts)
|
|
|
|
|
|
class BaseContextMiddleware(mw.Middleware):
|
|
def process_response(self, resp):
|
|
request_id = resp.request.headers.get('x-openstack-request-id')
|
|
if not request_id:
|
|
request_id = b'req-{0}'.format(str(uuid.uuid4()))
|
|
|
|
resp.headers['x-openstack-request-id'] = request_id
|
|
|
|
LOG.info('%s | %s: %s - %s %s', request_id, u._LI('Processed request'),
|
|
resp.status, resp.request.method, resp.request.url)
|
|
return resp
|
|
|
|
|
|
class ContextMiddleware(BaseContextMiddleware):
|
|
def __init__(self, app):
|
|
super(ContextMiddleware, self).__init__(app)
|
|
|
|
def process_request(self, req):
|
|
"""Convert authentication information into a request context
|
|
|
|
Generate a barbican.context.RequestContext object from the available
|
|
authentication headers and store on the 'context' attribute
|
|
of the req object.
|
|
|
|
:param req: wsgi request object that will be given the context object
|
|
:raises webob.exc.HTTPUnauthorized: when value of the X-Identity-Status
|
|
header is not 'Confirmed' and
|
|
anonymous access is disallowed
|
|
"""
|
|
if req.headers.get('X-Identity-Status') == 'Confirmed':
|
|
req.context = self._get_authenticated_context(req)
|
|
LOG.debug("==== Inserted barbican auth "
|
|
"request context: %s ====", req.context.to_dict())
|
|
elif CONF.allow_anonymous_access:
|
|
req.context = self._get_anonymous_context()
|
|
LOG.debug("==== Inserted barbican unauth "
|
|
"request context: %s ====", req.context.to_dict())
|
|
else:
|
|
raise webob.exc.HTTPUnauthorized()
|
|
|
|
# Ensure that down wind mw.Middleware/app can see this context.
|
|
req.environ['barbican.context'] = req.context
|
|
|
|
def _get_anonymous_context(self):
|
|
kwargs = {
|
|
'user': None,
|
|
'tenant': None,
|
|
'is_admin': False,
|
|
'read_only': True,
|
|
}
|
|
return barbican.context.RequestContext(**kwargs)
|
|
|
|
def _get_authenticated_context(self, req):
|
|
# NOTE(bcwaldon): X-Roles is a csv string, but we need to parse
|
|
# it into a list to be useful
|
|
roles_header = req.headers.get('X-Roles', '')
|
|
roles = [r.strip().lower() for r in roles_header.split(',')]
|
|
|
|
# NOTE(bcwaldon): This header is deprecated in favor of X-Auth-Token
|
|
# NOTE(mkbhanda): keeping this just-in-case for swift
|
|
deprecated_token = req.headers.get('X-Storage-Token')
|
|
|
|
kwargs = {
|
|
'auth_token': req.headers.get('X-Auth-Token', deprecated_token),
|
|
'user': req.headers.get('X-User-Id'),
|
|
'project': req.headers.get('X-Project-Id'),
|
|
'roles': roles,
|
|
'is_admin': CONF.admin_role.strip().lower() in roles,
|
|
}
|
|
|
|
if req.headers.get('X-Domain-Id'):
|
|
kwargs['domain'] = req.headers['X-Domain-Id']
|
|
if req.headers.get('X-User-Domain-Id'):
|
|
kwargs['user_domain'] = req.headers['X-User-Domain-Id']
|
|
if req.headers.get('X-Project-Domain-Id'):
|
|
kwargs['project_domain'] = req.headers['X-Project-Domain-Id']
|
|
|
|
return barbican.context.RequestContext(**kwargs)
|
|
|
|
|
|
class UnauthenticatedContextMiddleware(BaseContextMiddleware):
|
|
def _get_project_id_from_header(self, req):
|
|
project_id = req.headers.get('X-Project-Id')
|
|
if not project_id:
|
|
accept_header = req.headers.get('Accept')
|
|
if not accept_header:
|
|
req.headers['Accept'] = 'text/plain'
|
|
raise webob.exc.HTTPBadRequest(detail=u._('Missing X-Project-Id'))
|
|
|
|
return project_id
|
|
|
|
def process_request(self, req):
|
|
"""Create a context without an authorized user."""
|
|
project_id = self._get_project_id_from_header(req)
|
|
|
|
kwargs = {
|
|
'user': None,
|
|
'project': project_id,
|
|
'roles': [],
|
|
'is_admin': True
|
|
}
|
|
|
|
context = barbican.context.RequestContext(**kwargs)
|
|
|
|
req.environ['barbican.context'] = context
|