54 lines
1.7 KiB
Python
54 lines
1.7 KiB
Python
# Copyright (c) 2014-2017 Red Hat, Inc
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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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from oslo_config import cfg
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from nova.console.rfb import authnone
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from nova.console.rfb import authvencrypt
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from nova import exception
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CONF = cfg.CONF
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class RFBAuthSchemeList(object):
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AUTH_SCHEME_MAP = {
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"none": authnone.RFBAuthSchemeNone,
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"vencrypt": authvencrypt.RFBAuthSchemeVeNCrypt,
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}
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def __init__(self):
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self.schemes = {}
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for name in CONF.vnc.auth_schemes:
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scheme = self.AUTH_SCHEME_MAP[name]()
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self.schemes[scheme.security_type()] = scheme
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def find_scheme(self, desired_types):
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"""Find a suitable authentication scheme to use with compute node.
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Identify which of the ``desired_types`` we can accept.
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:param desired_types: A list of ints corresponding to the various
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authentication types supported.
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"""
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for security_type in desired_types:
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if security_type in self.schemes:
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return self.schemes[security_type]
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raise exception.RFBAuthNoAvailableScheme(
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allowed_types=", ".join([str(s) for s in self.schemes.keys()]),
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desired_types=", ".join([str(s) for s in desired_types]))
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