# Copyright 2017 Cloudbase Solutions, SRL.
#
# 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 keystoneauth1 import exceptions as ks_exceptions
from keystoneauth1 import loading
from keystoneauth1 import session as ks_session
from keystoneclient.v3 import client as kc_v3
from oslo_config import cfg
from oslo_log import log as logging
from vdibroker import exception
opts = [
cfg.BoolOpt('allow_untrusted',
default=False,
help='Allow untrusted SSL/TLS certificates.'),
]
CONF = cfg.CONF
CONF.register_opts(opts, 'keystone')
LOG = logging.getLogger(__name__)
TRUSTEE_CONF_GROUP = 'trustee'
loading.register_auth_conf_options(CONF, TRUSTEE_CONF_GROUP, )
def _get_trusts_auth_plugin(trust_id=None):
return loading.load_auth_from_conf_options(
CONF, TRUSTEE_CONF_GROUP, trust_id=trust_id)
def create_trust(ctxt):
LOG.debug("Creating Keystone trust")
trusts_auth_plugin = _get_trusts_auth_plugin()
loader = loading.get_plugin_loader("v3token")
auth = loader.load_from_options(
auth_url=trusts_auth_plugin.auth_url,
token=ctxt.auth_token,
project_name=ctxt.project_name,
project_domain_name=ctxt.project_domain)
session = ks_session.Session(
auth=auth, verify=not CONF.keystone.allow_untrusted)
try:
trustee_user_id = trusts_auth_plugin.get_user_id(session)
except ks_exceptions.Unauthorized as ex:
LOG.exception(ex)
raise exception.NotAuthorized("Trustee authentication failed")
trustor_user_id = ctxt.user
trustor_proj_id = ctxt.tenant
roles = ctxt.roles
LOG.debug("Granting Keystone trust. Trustor: %(trustor_user_id)s, trustee:"
" %(trustee_user_id)s, project: %(trustor_proj_id)s, roles:"
" %(roles)s",
{"trustor_user_id": trustor_user_id,
"trustee_user_id": trustee_user_id,
"trustor_proj_id": trustor_proj_id,
"roles": roles})
# Trusts are not supported before Keystone v3
client = kc_v3.Client(session=session)
trust = client.trusts.create(trustor_user=trustor_user_id,
trustee_user=trustee_user_id,
project=trustor_proj_id,
impersonation=True,
role_names=roles)
LOG.debug("Trust id: %s" % trust.id)
return trust.id
def delete_trust(trust_id):
LOG.debug("Deleting trust id: %s", trust_id)
auth = _get_trusts_auth_plugin(trust_id)
session = ks_session.Session(
auth=auth, verify=not CONF.keystone.allow_untrusted)
client = kc_v3.Client(session=session)
try:
client.trusts.delete(trust_id)
except ks_exceptions.NotFound:
LOG.debug("Trust id not found: %s", trust_id)
def create_keystone_session(trust_id):
verify = not CONF.keystone.allow_untrusted
auth = _get_trusts_auth_plugin(trust_id)
return ks_session.Session(auth=auth, verify=verify)
