95 lines
2.8 KiB
Python
95 lines
2.8 KiB
Python
# Copyright 2016 - Nokia Networks
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain 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,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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import logging
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import pprint
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import requests
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from six.moves import urllib
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from glareclient.common import utils
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LOG = logging.getLogger(__name__)
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def authenticate(**kwargs):
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"""Performs authentication using Keycloak OpenID Protocol.
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:param auth_url: Base authentication url of KeyCloak server (e.g.
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"https://my.keycloak:8443/auth"
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:param client_id: Client ID (according to OpenID Connect protocol).
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:param realm_name: KeyCloak realm name.
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:param username: User name (Optional, if None then access_token must be
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provided).
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:param password: Password (Optional).
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:param cacert: SSL certificate file (Optional).
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:param insecure: If True, SSL certificate is not verified (Optional).
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"""
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auth_url = kwargs.get('auth_url')
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client_id = kwargs.get('client_id')
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realm_name = kwargs.get('realm_name')
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username = kwargs.get('username')
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password = kwargs.get('password')
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insecure = kwargs.get('insecure', False)
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cacert = kwargs.get('cacert', utils.get_system_ca_file())
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if not auth_url:
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raise ValueError('Base authentication url is not provided.')
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if not client_id:
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raise ValueError('Client ID is not provided.')
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if not realm_name:
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raise ValueError('Project(realm) name is not provided.')
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if not username:
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raise ValueError('Username is not provided.')
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if password is None:
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raise ValueError('Password is not provided.')
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access_token_endpoint = (
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"%s/realms/%s/protocol/openid-connect/token" %
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(auth_url, realm_name)
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)
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verify = None
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if urllib.parse.urlparse(access_token_endpoint).scheme == "https":
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verify = False if insecure else cacert if cacert else True
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body = {
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'grant_type': 'password',
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'username': username,
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'password': password,
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'scope': 'profile',
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'client_id': client_id
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}
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resp = requests.post(
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access_token_endpoint,
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data=body,
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verify=verify
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)
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try:
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resp.raise_for_status()
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except Exception as e:
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raise Exception("Failed to get access token:\n %s" % str(e))
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LOG.debug(
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"HTTP response from OIDC provider: %s" %
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pprint.pformat(resp.json())
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)
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return resp.json()['access_token']
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