136 lines
5.2 KiB
Python
136 lines
5.2 KiB
Python
#!/usr/bin/env python
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# Copyright (c) 2012 OpenStack Foundation
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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");
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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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"""Auth Components for Consoles."""
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import time
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from oslo_config import cfg
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from oslo_log import log as logging
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import oslo_messaging as messaging
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from oslo_serialization import jsonutils
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from nova.cells import rpcapi as cells_rpcapi
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from nova.compute import rpcapi as compute_rpcapi
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from nova.i18n import _LI, _LW
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from nova import manager
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from nova import objects
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from nova.openstack.common import memorycache
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LOG = logging.getLogger(__name__)
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consoleauth_opts = [
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cfg.IntOpt('console_token_ttl',
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default=600,
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help='How many seconds before deleting tokens')
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]
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CONF = cfg.CONF
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CONF.register_opts(consoleauth_opts)
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CONF.import_opt('enable', 'nova.cells.opts', group='cells')
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class ConsoleAuthManager(manager.Manager):
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"""Manages token based authentication."""
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target = messaging.Target(version='2.0')
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def __init__(self, scheduler_driver=None, *args, **kwargs):
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super(ConsoleAuthManager, self).__init__(service_name='consoleauth',
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*args, **kwargs)
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self.mc = memorycache.get_client()
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self.compute_rpcapi = compute_rpcapi.ComputeAPI()
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self.cells_rpcapi = cells_rpcapi.CellsAPI()
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def _get_tokens_for_instance(self, instance_uuid):
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tokens_str = self.mc.get(instance_uuid.encode('UTF-8'))
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if not tokens_str:
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tokens = []
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else:
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tokens = jsonutils.loads(tokens_str)
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return tokens
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def authorize_console(self, context, token, console_type, host, port,
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internal_access_path, instance_uuid):
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token_dict = {'token': token,
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'instance_uuid': instance_uuid,
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'console_type': console_type,
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'host': host,
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'port': port,
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'internal_access_path': internal_access_path,
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'last_activity_at': time.time()}
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data = jsonutils.dumps(token_dict)
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# We need to log the warning message if the token is not cached
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# successfully, because the failure will cause the console for
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# instance to not be usable.
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if not self.mc.set(token.encode('UTF-8'),
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data, CONF.console_token_ttl):
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LOG.warning(_LW("Token: %(token)s failed to save into memcached."),
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{'token': token})
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tokens = self._get_tokens_for_instance(instance_uuid)
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# Remove the expired tokens from cache.
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for tok in tokens:
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token_str = self.mc.get(tok.encode('UTF-8'))
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if not token_str:
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tokens.remove(tok)
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tokens.append(token)
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if not self.mc.set(instance_uuid.encode('UTF-8'),
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jsonutils.dumps(tokens)):
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LOG.warning(_LW("Instance: %(instance_uuid)s failed to save "
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"into memcached"),
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{'instance_uuid': instance_uuid})
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LOG.info(_LI("Received Token: %(token)s, %(token_dict)s"),
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{'token': token, 'token_dict': token_dict})
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def _validate_token(self, context, token):
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instance_uuid = token['instance_uuid']
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if instance_uuid is None:
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return False
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# NOTE(comstud): consoleauth was meant to run in API cells. So,
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# if cells is enabled, we must call down to the child cell for
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# the instance.
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if CONF.cells.enable:
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return self.cells_rpcapi.validate_console_port(context,
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instance_uuid, token['port'], token['console_type'])
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instance = objects.Instance.get_by_uuid(context, instance_uuid)
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return self.compute_rpcapi.validate_console_port(context,
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instance,
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token['port'],
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token['console_type'])
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def check_token(self, context, token):
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token_str = self.mc.get(token.encode('UTF-8'))
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token_valid = (token_str is not None)
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LOG.info(_LI("Checking Token: %(token)s, %(token_valid)s"),
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{'token': token, 'token_valid': token_valid})
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if token_valid:
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token = jsonutils.loads(token_str)
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if self._validate_token(context, token):
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return token
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def delete_tokens_for_instance(self, context, instance_uuid):
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tokens = self._get_tokens_for_instance(instance_uuid)
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for token in tokens:
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self.mc.delete(token.encode('UTF-8'))
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self.mc.delete(instance_uuid.encode('UTF-8'))
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