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OpenStack Study: console_auth_tokens.py

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# Copyright 2013 Cloudbase Solutions Srl

# All Rights Reserved.

#

# Licensed under the Apache License, Version 2.0 (the "License"); you may

# not use this file except in compliance with the License. You may obtain

# a copy of the License at

#

# http://www.apache.org/licenses/LICENSE-2.0

#

# Unless required by applicable law or agreed to in writing, software

# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT

# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the

# License for the specific language governing permissions and limitations

# under the License.

import webob

from nova.api.openstack import extensions

from nova.api.openstack import wsgi

from nova.consoleauth import rpcapi as consoleauth_rpcapi

from nova.openstack.common.gettextutils import _

ALIAS = "os-console-auth-tokens"

authorize = extensions.extension_authorizer('compute', 'v3:' + ALIAS)

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class ConsoleAuthTokensController(wsgi.Controller):

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    def __init__(self, *args, **kwargs):

        self._consoleauth_rpcapi = consoleauth_rpcapi.ConsoleAuthAPI()

        super(ConsoleAuthTokensController, self).__init__(*args, **kwargs)

    @extensions.expected_errors((400, 401, 404))

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    def show(self, req, id):

        """Checks a console auth token and returns the related connect info."""

        context = req.environ['nova.context']

        authorize(context)

        token = id

        if not token:

            msg = _("token not provided")

            raise webob.exc.HTTPBadRequest(explanation=msg)

        connect_info = self._consoleauth_rpcapi.check_token(context, token)

        if not connect_info:

            raise webob.exc.HTTPNotFound(explanation=_("Token not found"))

        console_type = connect_info.get('console_type')

        # This is currently required only for RDP consoles

        if console_type != "rdp-html5":

            raise webob.exc.HTTPUnauthorized(

                explanation=_("The requested console type details are not "

                              "accessible"))

        return {'console':

                dict([(i, connect_info[i])

                     for i in ['instance_uuid', 'host', 'port',

                               'internal_access_path']

                     if i in connect_info])}

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class ConsoleAuthTokens(extensions.V3APIExtensionBase):

"""Console token authentication support."""

name = "ConsoleAuthTokens"

alias = ALIAS

namespace = "http://docs.openstack.org/compute/ext/%s/api/v3" % ALIAS

version = 1

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    def get_resources(self):

        controller = ConsoleAuthTokensController()

        ext = extensions.ResourceExtension('os-console-auth-tokens',

                                           controller)

        return [ext]

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    def get_controller_extensions(self):

        return []