OpenStack Identity (Keystone)
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# Copyright 2013 OpenStack Foundation
#
# 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.
"""Extensions supporting OAuth1."""
from oslo_serialization import jsonutils
from oslo_utils import timeutils
from six.moves import http_client
from keystone.common import controller
from keystone.common import dependency
from keystone.common import utils
from keystone.common import validation
from keystone.common import wsgi
import keystone.conf
from keystone import exception
from keystone.i18n import _
from keystone import notifications
from keystone.oauth1 import core as oauth1
from keystone.oauth1 import schema
from keystone.oauth1 import validator
CONF = keystone.conf.CONF
def _emit_user_oauth_consumer_token_invalidate(payload):
# This is a special case notification that expect the payload to be a dict
# containing the user_id and the consumer_id. This is so that the token
# provider can invalidate any tokens in the token persistence if
# token persistence is enabled
notifications.Audit.internal(
notifications.INVALIDATE_USER_OAUTH_CONSUMER_TOKENS,
payload,
)
@dependency.requires('oauth_api', 'token_provider_api')
class ConsumerCrudV3(controller.V3Controller):
collection_name = 'consumers'
member_name = 'consumer'
@classmethod
def base_url(cls, context, path=None):
"""Construct a path and pass it to V3Controller.base_url method."""
# NOTE(stevemar): Overriding path to /OS-OAUTH1/consumers so that
# V3Controller.base_url handles setting the self link correctly.
path = '/OS-OAUTH1/' + cls.collection_name
return controller.V3Controller.base_url(context, path=path)
@controller.protected()
def create_consumer(self, request, consumer):
validation.lazy_validate(schema.consumer_create, consumer)
ref = self._assign_unique_id(self._normalize_dict(consumer))
initiator = notifications._get_request_audit_info(request.context_dict)
consumer_ref = self.oauth_api.create_consumer(ref, initiator)
return ConsumerCrudV3.wrap_member(request.context_dict, consumer_ref)
@controller.protected()
def update_consumer(self, request, consumer_id, consumer):
validation.lazy_validate(schema.consumer_update, consumer)
self._require_matching_id(consumer_id, consumer)
ref = self._normalize_dict(consumer)
initiator = notifications._get_request_audit_info(request.context_dict)
ref = self.oauth_api.update_consumer(consumer_id, ref, initiator)
return ConsumerCrudV3.wrap_member(request.context_dict, ref)
@controller.protected()
def list_consumers(self, request):
ref = self.oauth_api.list_consumers()
return ConsumerCrudV3.wrap_collection(request.context_dict, ref)
@controller.protected()
def get_consumer(self, request, consumer_id):
ref = self.oauth_api.get_consumer(consumer_id)
return ConsumerCrudV3.wrap_member(request.context_dict, ref)
@controller.protected()
def delete_consumer(self, request, consumer_id):
user_token_ref = utils.get_token_ref(request.context_dict)
payload = {'user_id': user_token_ref.user_id,
'consumer_id': consumer_id}
_emit_user_oauth_consumer_token_invalidate(payload)
initiator = notifications._get_request_audit_info(request.context_dict)
self.oauth_api.delete_consumer(consumer_id, initiator)
@dependency.requires('oauth_api')
class AccessTokenCrudV3(controller.V3Controller):
collection_name = 'access_tokens'
member_name = 'access_token'
@classmethod
def _add_self_referential_link(cls, context, ref):
# NOTE(lwolf): overriding method to add proper path to self link
ref.setdefault('links', {})
path = '/users/%(user_id)s/OS-OAUTH1/access_tokens' % {
'user_id': cls._get_user_id(ref)
}
ref['links']['self'] = cls.base_url(context, path) + '/' + ref['id']
@controller.protected()
def get_access_token(self, request, user_id, access_token_id):
access_token = self.oauth_api.get_access_token(access_token_id)
if access_token['authorizing_user_id'] != user_id:
raise exception.NotFound()
access_token = self._format_token_entity(request.context_dict,
access_token)
return AccessTokenCrudV3.wrap_member(request.context_dict,
access_token)
@controller.protected()
def list_access_tokens(self, request, user_id):
if request.context.is_delegated_auth:
raise exception.Forbidden(
_('Cannot list request tokens'
' with a token issued via delegation.'))
refs = self.oauth_api.list_access_tokens(user_id)
formatted_refs = ([self._format_token_entity(request.context_dict, x)
for x in refs])
return AccessTokenCrudV3.wrap_collection(request.context_dict,
formatted_refs)
@controller.protected()
def delete_access_token(self, request, user_id, access_token_id):
access_token = self.oauth_api.get_access_token(access_token_id)
consumer_id = access_token['consumer_id']
payload = {'user_id': user_id, 'consumer_id': consumer_id}
_emit_user_oauth_consumer_token_invalidate(payload)
initiator = notifications._get_request_audit_info(request.context_dict)
return self.oauth_api.delete_access_token(
user_id, access_token_id, initiator)
@staticmethod
def _get_user_id(entity):
return entity.get('authorizing_user_id', '')
def _format_token_entity(self, context, entity):
formatted_entity = entity.copy()
access_token_id = formatted_entity['id']
user_id = self._get_user_id(formatted_entity)
if 'role_ids' in entity:
formatted_entity.pop('role_ids')
if 'access_secret' in entity:
formatted_entity.pop('access_secret')
url = ('/users/%(user_id)s/OS-OAUTH1/access_tokens/%(access_token_id)s'
'/roles' % {'user_id': user_id,
'access_token_id': access_token_id})
formatted_entity.setdefault('links', {})
formatted_entity['links']['roles'] = (self.base_url(context, url))
return formatted_entity
@dependency.requires('oauth_api', 'role_api')
class AccessTokenRolesV3(controller.V3Controller):
collection_name = 'roles'
member_name = 'role'
@controller.protected()
def list_access_token_roles(self, request, user_id, access_token_id):
access_token = self.oauth_api.get_access_token(access_token_id)
if access_token['authorizing_user_id'] != user_id:
raise exception.NotFound()
authed_role_ids = access_token['role_ids']
authed_role_ids = jsonutils.loads(authed_role_ids)
refs = ([self._format_role_entity(x) for x in authed_role_ids])
return AccessTokenRolesV3.wrap_collection(request.context_dict, refs)
@controller.protected()
def get_access_token_role(self, request, user_id,
access_token_id, role_id):
access_token = self.oauth_api.get_access_token(access_token_id)
if access_token['authorizing_user_id'] != user_id:
raise exception.Unauthorized(_('User IDs do not match'))
authed_role_ids = access_token['role_ids']
authed_role_ids = jsonutils.loads(authed_role_ids)
for authed_role_id in authed_role_ids:
if authed_role_id == role_id:
role = self._format_role_entity(role_id)
return AccessTokenRolesV3.wrap_member(request.context_dict,
role)
raise exception.RoleNotFound(role_id=role_id)
def _format_role_entity(self, role_id):
role = self.role_api.get_role(role_id)
formatted_entity = role.copy()
if 'description' in role:
formatted_entity.pop('description')
if 'enabled' in role:
formatted_entity.pop('enabled')
return formatted_entity
@dependency.requires('assignment_api', 'oauth_api',
'resource_api', 'token_provider_api')
class OAuthControllerV3(controller.V3Controller):
collection_name = 'not_used'
member_name = 'not_used'
def create_request_token(self, request):
oauth_headers = oauth1.get_oauth_headers(request.headers)
consumer_id = oauth_headers.get('oauth_consumer_key')
requested_project_id = request.headers.get('Requested-Project-Id')
if not consumer_id:
raise exception.ValidationError(
attribute='oauth_consumer_key', target='request')
if not requested_project_id:
raise exception.ValidationError(
attribute='requested_project_id', target='request')
# NOTE(stevemar): Ensure consumer and requested project exist
self.resource_api.get_project(requested_project_id)
self.oauth_api.get_consumer(consumer_id)
url = self.base_url(request.context_dict, request.context_dict['path'])
req_headers = {'Requested-Project-Id': requested_project_id}
req_headers.update(request.headers)
request_verifier = oauth1.RequestTokenEndpoint(
request_validator=validator.OAuthValidator(),
token_generator=oauth1.token_generator)
h, b, s = request_verifier.create_request_token_response(
url,
http_method='POST',
body=request.params,
headers=req_headers)
if (not b) or int(s) > 399:
msg = _('Invalid signature')
raise exception.Unauthorized(message=msg)
request_token_duration = CONF.oauth1.request_token_duration
initiator = notifications._get_request_audit_info(request.context_dict)
token_ref = self.oauth_api.create_request_token(consumer_id,
requested_project_id,
request_token_duration,
initiator)
result = ('oauth_token=%(key)s&oauth_token_secret=%(secret)s'
% {'key': token_ref['id'],
'secret': token_ref['request_secret']})
if CONF.oauth1.request_token_duration:
expiry_bit = '&oauth_expires_at=%s' % token_ref['expires_at']
result += expiry_bit
headers = [('Content-Type', 'application/x-www-urlformencoded')]
response = wsgi.render_response(
result,
status=(http_client.CREATED,
http_client.responses[http_client.CREATED]),
headers=headers)
return response
def create_access_token(self, request):
oauth_headers = oauth1.get_oauth_headers(request.headers)
consumer_id = oauth_headers.get('oauth_consumer_key')
request_token_id = oauth_headers.get('oauth_token')
oauth_verifier = oauth_headers.get('oauth_verifier')
if not consumer_id:
raise exception.ValidationError(
attribute='oauth_consumer_key', target='request')
if not request_token_id:
raise exception.ValidationError(
attribute='oauth_token', target='request')
if not oauth_verifier:
raise exception.ValidationError(
attribute='oauth_verifier', target='request')
req_token = self.oauth_api.get_request_token(
request_token_id)
expires_at = req_token['expires_at']
if expires_at:
now = timeutils.utcnow()
expires = timeutils.normalize_time(
timeutils.parse_isotime(expires_at))
if now > expires:
raise exception.Unauthorized(_('Request token is expired'))
url = self.base_url(request.context_dict, request.context_dict['path'])
access_verifier = oauth1.AccessTokenEndpoint(
request_validator=validator.OAuthValidator(),
token_generator=oauth1.token_generator)
h, b, s = access_verifier.create_access_token_response(
url,
http_method='POST',
body=request.params,
headers=request.headers)
params = oauth1.extract_non_oauth_params(b)
if params:
msg = _('There should not be any non-oauth parameters')
raise exception.Unauthorized(message=msg)
if req_token['consumer_id'] != consumer_id:
msg = _('provided consumer key does not match stored consumer key')
raise exception.Unauthorized(message=msg)
if req_token['verifier'] != oauth_verifier:
msg = _('provided verifier does not match stored verifier')
raise exception.Unauthorized(message=msg)
if req_token['id'] != request_token_id:
msg = _('provided request key does not match stored request key')
raise exception.Unauthorized(message=msg)
if not req_token.get('authorizing_user_id'):
msg = _('Request Token does not have an authorizing user id')
raise exception.Unauthorized(message=msg)
access_token_duration = CONF.oauth1.access_token_duration
initiator = notifications._get_request_audit_info(request.context_dict)
token_ref = self.oauth_api.create_access_token(request_token_id,
access_token_duration,
initiator)
result = ('oauth_token=%(key)s&oauth_token_secret=%(secret)s'
% {'key': token_ref['id'],
'secret': token_ref['access_secret']})
if CONF.oauth1.access_token_duration:
expiry_bit = '&oauth_expires_at=%s' % (token_ref['expires_at'])
result += expiry_bit
headers = [('Content-Type', 'application/x-www-urlformencoded')]
response = wsgi.render_response(
result,
status=(http_client.CREATED,
http_client.responses[http_client.CREATED]),
headers=headers)
return response
@controller.protected()
def authorize_request_token(self, request, request_token_id, roles):
"""An authenticated user is going to authorize a request token.
As a security precaution, the requested roles must match those in
the request token. Because this is in a CLI-only world at the moment,
there is not another easy way to make sure the user knows which roles
are being requested before authorizing.
"""
if request.context.is_delegated_auth:
raise exception.Forbidden(
_('Cannot authorize a request token'
' with a token issued via delegation.'))
req_token = self.oauth_api.get_request_token(request_token_id)
expires_at = req_token['expires_at']
if expires_at:
now = timeutils.utcnow()
expires = timeutils.normalize_time(
timeutils.parse_isotime(expires_at))
if now > expires:
raise exception.Unauthorized(_('Request token is expired'))
# put the roles in a set for easy comparison
authed_roles = set()
for role in roles:
authed_roles.add(role['id'])
# verify the authorizing user has the roles
user_token = utils.get_token_ref(request.context_dict)
user_id = user_token.user_id
project_id = req_token['requested_project_id']
user_roles = self.assignment_api.get_roles_for_user_and_project(
user_id, project_id)
cred_set = set(user_roles)
if not cred_set.issuperset(authed_roles):
msg = _('authorizing user does not have role required')
raise exception.Unauthorized(message=msg)
# create list of just the id's for the backend
role_ids = list(authed_roles)
# finally authorize the token
authed_token = self.oauth_api.authorize_request_token(
request_token_id, user_id, role_ids)
to_return = {'token': {'oauth_verifier': authed_token['verifier']}}
return to_return