b07fbb91c6
In the future clients will simply pass the service they expect to talk to and the path. This will prevent every service trying to get their own base urls from the service catalog individually. This can later be extended to have the auth plugin actually contact the URL from the service catalog which will let us have unversioned endpoints in the catalog handled from a single location. Change-Id: I80f0b5b1dbb45565fec09d1cb2c0552cfb9a72f5 blueprint: auth-plugin-endpoints
628 lines
25 KiB
Python
628 lines
25 KiB
Python
# Copyright 2010 Jacob Kaplan-Moss
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# Copyright 2011 OpenStack Foundation
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# Copyright 2011 Piston Cloud Computing, Inc.
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# Copyright 2011 Nebula, Inc.
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# All Rights Reserved.
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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"""
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OpenStack Client interface. Handles the REST calls and responses.
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"""
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import logging
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from six.moves.urllib import parse as urlparse
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try:
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import keyring
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import pickle
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except ImportError:
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keyring = None
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pickle = None
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# Python 2.5 compat fix
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if not hasattr(urlparse, 'parse_qsl'):
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import cgi
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urlparse.parse_qsl = cgi.parse_qsl
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from keystoneclient import access
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from keystoneclient.auth import base
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from keystoneclient import baseclient
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from keystoneclient import exceptions
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from keystoneclient.openstack.common import jsonutils
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from keystoneclient import session as client_session
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_logger = logging.getLogger(__name__)
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# These variables are moved and using them via httpclient is deprecated.
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# Maintain here for compatibility.
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USER_AGENT = client_session.USER_AGENT
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request = client_session.request
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class HTTPClient(baseclient.Client, base.BaseAuthPlugin):
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def __init__(self, username=None, tenant_id=None, tenant_name=None,
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password=None, auth_url=None, region_name=None, endpoint=None,
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token=None, debug=False, auth_ref=None, use_keyring=False,
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force_new_token=False, stale_duration=None, user_id=None,
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user_domain_id=None, user_domain_name=None, domain_id=None,
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domain_name=None, project_id=None, project_name=None,
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project_domain_id=None, project_domain_name=None,
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trust_id=None, session=None, **kwargs):
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"""Construct a new http client
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:param string user_id: User ID for authentication. (optional)
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:param string username: Username for authentication. (optional)
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:param string user_domain_id: User's domain ID for authentication.
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(optional)
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:param string user_domain_name: User's domain name for authentication.
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(optional)
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:param string password: Password for authentication. (optional)
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:param string domain_id: Domain ID for domain scoping. (optional)
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:param string domain_name: Domain name for domain scoping. (optional)
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:param string project_id: Project ID for project scoping. (optional)
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:param string project_name: Project name for project scoping.
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(optional)
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:param string project_domain_id: Project's domain ID for project
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scoping. (optional)
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:param string project_domain_name: Project's domain name for project
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scoping. (optional)
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:param string auth_url: Identity service endpoint for authorization.
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:param string region_name: Name of a region to select when choosing an
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endpoint from the service catalog.
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:param integer timeout: DEPRECATED: use session. (optional)
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:param string endpoint: A user-supplied endpoint URL for the identity
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service. Lazy-authentication is possible for
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API service calls if endpoint is set at
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instantiation. (optional)
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:param string token: Token for authentication. (optional)
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:param string cacert: DEPRECATED: use session. (optional)
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:param string key: DEPRECATED: use session. (optional)
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:param string cert: DEPRECATED: use session. (optional)
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:param boolean insecure: DEPRECATED: use session. (optional)
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:param string original_ip: DEPRECATED: use session. (optional)
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:param boolean debug: DEPRECATED: use logging configuration. (optional)
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:param dict auth_ref: To allow for consumers of the client to manage
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their own caching strategy, you may initialize a
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client with a previously captured auth_reference
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(token). If there are keyword arguments passed
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that also exist in auth_ref, the value from the
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argument will take precedence.
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:param boolean use_keyring: Enables caching auth_ref into keyring.
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default: False (optional)
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:param boolean force_new_token: Keyring related parameter, forces
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request for new token.
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default: False (optional)
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:param integer stale_duration: Gap in seconds to determine if token
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from keyring is about to expire.
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default: 30 (optional)
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:param string tenant_name: Tenant name. (optional)
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The tenant_name keyword argument is
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deprecated, use project_name instead.
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:param string tenant_id: Tenant id. (optional)
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The tenant_id keyword argument is
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deprecated, use project_id instead.
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:param string trust_id: Trust ID for trust scoping. (optional)
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:param object session: A Session object to be used for
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communicating with the identity service.
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"""
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# set baseline defaults
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self.user_id = None
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self.username = None
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self.user_domain_id = None
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self.user_domain_name = None
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self.domain_id = None
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self.domain_name = None
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self.project_id = None
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self.project_name = None
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self.project_domain_id = None
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self.project_domain_name = None
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self.region_name = None
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self.auth_url = None
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self._endpoint = None
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self._management_url = None
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self.trust_id = None
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# if loading from a dictionary passed in via auth_ref,
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# load values from AccessInfo parsing that dictionary
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if auth_ref:
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self.auth_ref = access.AccessInfo.factory(**auth_ref)
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self.version = self.auth_ref.version
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self.user_id = self.auth_ref.user_id
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self.username = self.auth_ref.username
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self.user_domain_id = self.auth_ref.user_domain_id
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self.domain_id = self.auth_ref.domain_id
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self.domain_name = self.auth_ref.domain_name
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self.project_id = self.auth_ref.project_id
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self.project_name = self.auth_ref.project_name
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self.project_domain_id = self.auth_ref.project_domain_id
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self.auth_url = self.auth_ref.auth_url[0]
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self._management_url = self.auth_ref.management_url[0]
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self.auth_token_from_user = self.auth_ref.auth_token
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self.trust_id = self.auth_ref.trust_id
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if self.auth_ref.has_service_catalog():
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self.region_name = self.auth_ref.service_catalog.region_name
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else:
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self.auth_ref = None
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# allow override of the auth_ref defaults from explicit
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# values provided to the client
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# apply deprecated variables first, so modern variables override them
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if tenant_id:
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self.project_id = tenant_id
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if tenant_name:
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self.project_name = tenant_name
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# user-related attributes
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self.password = password
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if user_id:
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self.user_id = user_id
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if username:
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self.username = username
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if user_domain_id:
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self.user_domain_id = user_domain_id
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elif not (user_id or user_domain_name):
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self.user_domain_id = 'default'
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if user_domain_name:
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self.user_domain_name = user_domain_name
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# domain-related attributes
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if domain_id:
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self.domain_id = domain_id
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if domain_name:
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self.domain_name = domain_name
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# project-related attributes
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if project_id:
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self.project_id = project_id
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if project_name:
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self.project_name = project_name
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if project_domain_id:
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self.project_domain_id = project_domain_id
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elif not (project_id or project_domain_name):
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self.project_domain_id = 'default'
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if project_domain_name:
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self.project_domain_name = project_domain_name
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# trust-related attributes
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if trust_id:
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self.trust_id = trust_id
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# endpoint selection
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if auth_url:
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self.auth_url = auth_url.rstrip('/')
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if token:
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self.auth_token_from_user = token
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else:
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self.auth_token_from_user = None
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if endpoint:
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self._endpoint = endpoint.rstrip('/')
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if region_name:
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self.region_name = region_name
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self._auth_token = None
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if not session:
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session = client_session.Session.construct(kwargs)
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session.auth = self
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super(HTTPClient, self).__init__(session=session)
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self.domain = ''
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self.debug_log = debug
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# keyring setup
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if use_keyring and keyring is None:
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_logger.warning('Failed to load keyring modules.')
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self.use_keyring = use_keyring and keyring is not None
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self.force_new_token = force_new_token
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self.stale_duration = stale_duration or access.STALE_TOKEN_DURATION
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self.stale_duration = int(self.stale_duration)
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def get_token(self, session, **kwargs):
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return self.auth_token
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@property
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def auth_token(self):
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if self._auth_token:
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return self._auth_token
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if self.auth_ref:
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if self.auth_ref.will_expire_soon(self.stale_duration):
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self.authenticate()
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return self.auth_ref.auth_token
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if self.auth_token_from_user:
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return self.auth_token_from_user
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def get_endpoint(self, session, interface=None, **kwargs):
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if interface == 'public':
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return self.auth_url
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else:
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return self.management_url
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@auth_token.setter
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def auth_token(self, value):
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"""Override the auth_token.
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If an application sets auth_token explicitly then it will always be
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used and override any past or future retrieved token.
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"""
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self._auth_token = value
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@auth_token.deleter
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def auth_token(self):
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self._auth_token = None
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self.auth_token_from_user = None
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@property
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def service_catalog(self):
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"""Returns this client's service catalog."""
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return self.auth_ref.service_catalog
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def has_service_catalog(self):
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"""Returns True if this client provides a service catalog."""
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return self.auth_ref.has_service_catalog()
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@property
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def tenant_id(self):
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"""Provide read-only backwards compatibility for tenant_id.
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This is deprecated, use project_id instead.
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"""
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return self.project_id
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@property
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def tenant_name(self):
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"""Provide read-only backwards compatibility for tenant_name.
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This is deprecated, use project_name instead.
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"""
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return self.project_name
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def authenticate(self, username=None, password=None, tenant_name=None,
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tenant_id=None, auth_url=None, token=None,
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user_id=None, domain_name=None, domain_id=None,
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project_name=None, project_id=None, user_domain_id=None,
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user_domain_name=None, project_domain_id=None,
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project_domain_name=None, trust_id=None,
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region_name=None):
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"""Authenticate user.
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Uses the data provided at instantiation to authenticate against
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the Identity server. This may use either a username and password
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or token for authentication. If a tenant name or id was provided
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then the resulting authenticated client will be scoped to that
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tenant and contain a service catalog of available endpoints.
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With the v2.0 API, if a tenant name or ID is not provided, the
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authentication token returned will be 'unscoped' and limited in
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capabilities until a fully-scoped token is acquired.
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With the v3 API, if a domain name or id was provided then the resulting
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authenticated client will be scoped to that domain. If a project name
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or ID is not provided, and the authenticating user has a default
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project configured, the authentication token returned will be 'scoped'
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to the default project. Otherwise, the authentication token returned
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will be 'unscoped' and limited in capabilities until a fully-scoped
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token is acquired.
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With the v3 API, with the OS-TRUST extension enabled, the trust_id can
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be provided to allow project-specific role delegation between users
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If successful, sets the self.auth_ref and self.auth_token with
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the returned token. If not already set, will also set
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self.management_url from the details provided in the token.
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:returns: ``True`` if authentication was successful.
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:raises: AuthorizationFailure if unable to authenticate or validate
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the existing authorization token
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:raises: ValueError if insufficient parameters are used.
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If keyring is used, token is retrieved from keyring instead.
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Authentication will only be necessary if any of the following
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conditions are met:
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* keyring is not used
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* if token is not found in keyring
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* if token retrieved from keyring is expired or about to
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expired (as determined by stale_duration)
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* if force_new_token is true
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"""
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auth_url = auth_url or self.auth_url
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user_id = user_id or self.user_id
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username = username or self.username
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password = password or self.password
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user_domain_id = user_domain_id or self.user_domain_id
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user_domain_name = user_domain_name or self.user_domain_name
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domain_id = domain_id or self.domain_id
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domain_name = domain_name or self.domain_name
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project_id = project_id or tenant_id or self.project_id
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project_name = project_name or tenant_name or self.project_name
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project_domain_id = project_domain_id or self.project_domain_id
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project_domain_name = project_domain_name or self.project_domain_name
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trust_id = trust_id or self.trust_id
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region_name = region_name or self.region_name
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if not token:
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token = self.auth_token_from_user
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if (not token and self.auth_ref and not
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self.auth_ref.will_expire_soon(self.stale_duration)):
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token = self.auth_ref.auth_token
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kwargs = {
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'auth_url': auth_url,
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'user_id': user_id,
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'username': username,
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'user_domain_id': user_domain_id,
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'user_domain_name': user_domain_name,
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'domain_id': domain_id,
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'domain_name': domain_name,
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'project_id': project_id,
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'project_name': project_name,
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'project_domain_id': project_domain_id,
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'project_domain_name': project_domain_name,
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'token': token,
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'trust_id': trust_id,
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}
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(keyring_key, auth_ref) = self.get_auth_ref_from_keyring(**kwargs)
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new_token_needed = False
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if auth_ref is None or self.force_new_token:
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new_token_needed = True
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kwargs['password'] = password
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resp = self.get_raw_token_from_identity_service(**kwargs)
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if isinstance(resp, access.AccessInfo):
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self.auth_ref = resp
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else:
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self.auth_ref = access.AccessInfo.factory(*resp)
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# NOTE(jamielennox): The original client relies on being able to
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# push the region name into the service catalog but new auth
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# it in.
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if region_name:
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self.auth_ref.service_catalog._region_name = region_name
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else:
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self.auth_ref = auth_ref
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self.process_token(region_name=region_name)
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if new_token_needed:
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self.store_auth_ref_into_keyring(keyring_key)
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return True
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def _build_keyring_key(self, **kwargs):
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"""Create a unique key for keyring.
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Used to store and retrieve auth_ref from keyring.
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Returns a slash-separated string of values ordered by key name.
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"""
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return '/'.join([kwargs[k] or '?' for k in sorted(kwargs.keys())])
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def get_auth_ref_from_keyring(self, **kwargs):
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"""Retrieve auth_ref from keyring.
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If auth_ref is found in keyring, (keyring_key, auth_ref) is returned.
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Otherwise, (keyring_key, None) is returned.
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:returns: (keyring_key, auth_ref) or (keyring_key, None)
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:returns: or (None, None) if use_keyring is not set in the object
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"""
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keyring_key = None
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auth_ref = None
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if self.use_keyring:
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keyring_key = self._build_keyring_key(**kwargs)
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try:
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auth_ref = keyring.get_password("keystoneclient_auth",
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keyring_key)
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if auth_ref:
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auth_ref = pickle.loads(auth_ref)
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if auth_ref.will_expire_soon(self.stale_duration):
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# token has expired, don't use it
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auth_ref = None
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except Exception as e:
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auth_ref = None
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_logger.warning('Unable to retrieve token from keyring %s' % (
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e))
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return (keyring_key, auth_ref)
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def store_auth_ref_into_keyring(self, keyring_key):
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"""Store auth_ref into keyring.
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"""
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if self.use_keyring:
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try:
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keyring.set_password("keystoneclient_auth",
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keyring_key,
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pickle.dumps(self.auth_ref))
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except Exception as e:
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_logger.warning("Failed to store token into keyring %s" % (e))
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def _process_management_url(self, region_name):
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try:
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self._management_url = self.auth_ref.service_catalog.url_for(
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service_type='identity',
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endpoint_type='admin',
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region_name=region_name)
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except exceptions.EndpointNotFound:
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_logger.warning("Failed to retrieve management_url from token")
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def process_token(self, region_name=None):
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"""Extract and process information from the new auth_ref.
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And set the relevant authentication information.
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"""
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# if we got a response without a service catalog, set the local
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# list of tenants for introspection, and leave to client user
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# to determine what to do. Otherwise, load up the service catalog
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if self.auth_ref.project_scoped:
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if not self.auth_ref.tenant_id:
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raise exceptions.AuthorizationFailure(
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"Token didn't provide tenant_id")
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self._process_management_url(region_name)
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self.project_name = self.auth_ref.tenant_name
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self.project_id = self.auth_ref.tenant_id
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if not self.auth_ref.user_id:
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raise exceptions.AuthorizationFailure(
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"Token didn't provide user_id")
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self.user_id = self.auth_ref.user_id
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|
self.auth_domain_id = self.auth_ref.domain_id
|
|
self.auth_tenant_id = self.auth_ref.tenant_id
|
|
self.auth_user_id = self.auth_ref.user_id
|
|
|
|
@property
|
|
def management_url(self):
|
|
return self._endpoint or self._management_url
|
|
|
|
@management_url.setter
|
|
def management_url(self, value):
|
|
# NOTE(jamielennox): it's debatable here whether we should set
|
|
# _endpoint or _management_url. As historically management_url was set
|
|
# permanently setting _endpoint would better match that behaviour.
|
|
self._endpoint = value
|
|
|
|
def get_raw_token_from_identity_service(self, auth_url, username=None,
|
|
password=None, tenant_name=None,
|
|
tenant_id=None, token=None,
|
|
user_id=None, user_domain_id=None,
|
|
user_domain_name=None,
|
|
domain_id=None, domain_name=None,
|
|
project_id=None, project_name=None,
|
|
project_domain_id=None,
|
|
project_domain_name=None,
|
|
trust_id=None):
|
|
"""Authenticate against the Identity API and get a token.
|
|
|
|
Not implemented here because auth protocols should be API
|
|
version-specific.
|
|
|
|
Expected to authenticate or validate an existing authentication
|
|
reference already associated with the client. Invoking this call
|
|
*always* makes a call to the Identity service.
|
|
|
|
:returns: (``resp``, ``body``)
|
|
|
|
"""
|
|
raise NotImplementedError
|
|
|
|
def serialize(self, entity):
|
|
return jsonutils.dumps(entity)
|
|
|
|
@staticmethod
|
|
def _decode_body(resp):
|
|
if resp.text:
|
|
try:
|
|
body_resp = jsonutils.loads(resp.text)
|
|
except (ValueError, TypeError):
|
|
body_resp = None
|
|
_logger.debug("Could not decode JSON from body: %s"
|
|
% resp.text)
|
|
else:
|
|
_logger.debug("No body was returned.")
|
|
body_resp = None
|
|
|
|
return body_resp
|
|
|
|
def request(self, url, method, **kwargs):
|
|
"""Send an http request with the specified characteristics.
|
|
|
|
Wrapper around requests.request to handle tasks such as
|
|
setting headers, JSON encoding/decoding, and error handling.
|
|
"""
|
|
|
|
try:
|
|
kwargs['json'] = kwargs.pop('body')
|
|
except KeyError:
|
|
pass
|
|
|
|
kwargs.setdefault('authenticated', False)
|
|
resp = super(HTTPClient, self).request(url, method, **kwargs)
|
|
return resp, self._decode_body(resp)
|
|
|
|
def _cs_request(self, url, method, management=True, **kwargs):
|
|
"""Makes an authenticated request to keystone endpoint by
|
|
concatenating self.management_url and url and passing in method and
|
|
any associated kwargs.
|
|
"""
|
|
interface = 'admin' if management else 'public'
|
|
endpoint_filter = kwargs.setdefault('endpoint_filter', {})
|
|
endpoint_filter.setdefault('service_type', 'identity')
|
|
endpoint_filter.setdefault('interface', interface)
|
|
|
|
if self.region_name:
|
|
endpoint_filter.setdefault('region_name', self.region_name)
|
|
|
|
kwargs.setdefault('authenticated', None)
|
|
try:
|
|
return self.request(url, method, **kwargs)
|
|
except exceptions.MissingAuthPlugin:
|
|
_logger.info('Cannot get authenticated endpoint without an '
|
|
'auth plugin')
|
|
raise exceptions.AuthorizationFailure(
|
|
'Current authorization does not have a known management url')
|
|
|
|
def get(self, url, **kwargs):
|
|
return self._cs_request(url, 'GET', **kwargs)
|
|
|
|
def head(self, url, **kwargs):
|
|
return self._cs_request(url, 'HEAD', **kwargs)
|
|
|
|
def post(self, url, **kwargs):
|
|
return self._cs_request(url, 'POST', **kwargs)
|
|
|
|
def put(self, url, **kwargs):
|
|
return self._cs_request(url, 'PUT', **kwargs)
|
|
|
|
def patch(self, url, **kwargs):
|
|
return self._cs_request(url, 'PATCH', **kwargs)
|
|
|
|
def delete(self, url, **kwargs):
|
|
return self._cs_request(url, 'DELETE', **kwargs)
|
|
|
|
# DEPRECATIONS: The following methods are no longer directly supported
|
|
# but maintained for compatibility purposes.
|
|
|
|
deprecated_session_variables = {'original_ip': None,
|
|
'cert': None,
|
|
'timeout': None,
|
|
'verify_cert': 'verify'}
|
|
|
|
def __getattr__(self, name):
|
|
# FIXME(jamielennox): provide a proper deprecated warning
|
|
try:
|
|
var_name = self.deprecated_session_variables[name]
|
|
except KeyError:
|
|
raise AttributeError("Unknown Attribute: %s" % name)
|
|
|
|
return getattr(self.session, var_name or name)
|
|
|
|
def __setattr__(self, name, val):
|
|
# FIXME(jamielennox): provide a proper deprecated warning
|
|
try:
|
|
var_name = self.deprecated_session_variables[name]
|
|
except KeyError:
|
|
super(HTTPClient, self).__setattr__(name, val)
|
|
else:
|
|
setattr(self.session, var_name or name)
|