74 lines
2.5 KiB
Python
74 lines
2.5 KiB
Python
# vim: tabstop=4 shiftwidth=4 softtabstop=4
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# Copyright (c) 2013 The Johns Hopkins University/Applied Physics Laboratory
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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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An implementation of a key manager that returns a single key in response to
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all invocations of get_key.
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"""
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from nova import exception
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from nova.openstack.common.gettextutils import _
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from nova.openstack.common import log as logging
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from nova.tests.keymgr import mock_key_mgr
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LOG = logging.getLogger(__name__)
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class SingleKeyManager(mock_key_mgr.MockKeyManager):
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"""
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This key manager implementation supports all the methods specified by the
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key manager interface. This implementation creates a single key in response
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to all invocations of create_key. Side effects (e.g., raising exceptions)
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for each method are handled as specified by the key manager interface.
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"""
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def __init__(self):
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LOG.warn(_('This key manager is insecure and is not recommended for '
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'production deployments'))
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super(SingleKeyManager, self).__init__()
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self.key_id = '00000000-0000-0000-0000-000000000000'
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self.key = self._generate_key(key_length=256)
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# key should exist by default
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self.keys[self.key_id] = self.key
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def _generate_hex_key(self, **kwargs):
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key_length = kwargs.get('key_length', 256)
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return '0' * (key_length / 4) # hex digit => 4 bits
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def _generate_key_id(self):
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return self.key_id
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def store_key(self, ctxt, key, **kwargs):
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if key != self.key:
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raise exception.KeyManagerError(
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reason="cannot store arbitrary keys")
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return super(SingleKeyManager, self).store_key(ctxt, key, **kwargs)
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def delete_key(self, ctxt, key_id, **kwargs):
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if ctxt is None:
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raise exception.NotAuthorized()
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if key_id != self.key_id:
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raise exception.KeyManagerError(
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reason="cannot delete non-existent key")
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LOG.warn(_("Not deleting key %s"), key_id)
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