478 lines
20 KiB
Python
478 lines
20 KiB
Python
# Copyright 2010 Jacob Kaplan-Moss
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# Copyright 2011 OpenStack LLC.
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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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Command-line interface to the OpenStack Identity API.
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"""
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import argparse
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import getpass
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import os
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import sys
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import keystoneclient
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from keystoneclient import access
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from keystoneclient import exceptions as exc
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from keystoneclient import utils
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from keystoneclient.v2_0 import shell as shell_v2_0
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from keystoneclient.generic import shell as shell_generic
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from keystoneclient.contrib.bootstrap import shell as shell_bootstrap
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def env(*vars, **kwargs):
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"""Search for the first defined of possibly many env vars
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Returns the first environment variable defined in vars, or
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returns the default defined in kwargs.
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"""
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for v in vars:
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value = os.environ.get(v, None)
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if value:
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return value
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return kwargs.get('default', '')
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class OpenStackIdentityShell(object):
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def get_base_parser(self):
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parser = argparse.ArgumentParser(
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prog='keystone',
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description=__doc__.strip(),
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epilog='See "keystone help COMMAND" '
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'for help on a specific command.',
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add_help=False,
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formatter_class=OpenStackHelpFormatter,
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)
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# Global arguments
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parser.add_argument('-h',
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'--help',
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action='store_true',
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help=argparse.SUPPRESS)
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parser.add_argument('--version',
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action='version',
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version=keystoneclient.__version__)
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parser.add_argument('--debug',
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default=False,
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action='store_true',
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help=argparse.SUPPRESS)
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parser.add_argument('--os-username',
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metavar='<auth-user-name>',
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default=env('OS_USERNAME'),
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help='Name used for authentication with the '
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'OpenStack Identity service. '
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'Defaults to env[OS_USERNAME]')
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parser.add_argument('--os_username',
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help=argparse.SUPPRESS)
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parser.add_argument('--os-password',
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metavar='<auth-password>',
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default=env('OS_PASSWORD'),
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help='Password used for authentication with the '
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'OpenStack Identity service. '
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'Defaults to env[OS_PASSWORD]')
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parser.add_argument('--os_password',
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help=argparse.SUPPRESS)
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parser.add_argument('--os-tenant-name',
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metavar='<auth-tenant-name>',
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default=env('OS_TENANT_NAME'),
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help='Tenant to request authorization on. '
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'Defaults to env[OS_TENANT_NAME]')
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parser.add_argument('--os_tenant_name',
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help=argparse.SUPPRESS)
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parser.add_argument('--os-tenant-id',
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metavar='<tenant-id>',
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default=env('OS_TENANT_ID'),
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help='Tenant to request authorization on. '
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'Defaults to env[OS_TENANT_ID]')
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parser.add_argument('--os_tenant_id',
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help=argparse.SUPPRESS)
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parser.add_argument('--os-auth-url',
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metavar='<auth-url>',
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default=env('OS_AUTH_URL'),
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help='Specify the Identity endpoint to use for '
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'authentication. '
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'Defaults to env[OS_AUTH_URL]')
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parser.add_argument('--os_auth_url',
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help=argparse.SUPPRESS)
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parser.add_argument('--os-region-name',
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metavar='<region-name>',
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default=env('OS_REGION_NAME'),
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help='Defaults to env[OS_REGION_NAME]')
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parser.add_argument('--os_region_name',
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help=argparse.SUPPRESS)
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parser.add_argument('--os-identity-api-version',
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metavar='<identity-api-version>',
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default=env('OS_IDENTITY_API_VERSION',
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'KEYSTONE_VERSION'),
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help='Defaults to env[OS_IDENTITY_API_VERSION]'
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' or 2.0')
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parser.add_argument('--os_identity_api_version',
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help=argparse.SUPPRESS)
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parser.add_argument('--os-token',
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metavar='<service-token>',
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default=env('OS_SERVICE_TOKEN'),
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help='Specify an existing token to use instead of '
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'retrieving one via authentication (e.g. '
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'with username & password). '
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'Defaults to env[OS_SERVICE_TOKEN]')
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parser.add_argument('--os-endpoint',
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metavar='<service-endpoint>',
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default=env('OS_SERVICE_ENDPOINT'),
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help='Specify an endpoint to use instead of '
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'retrieving one from the service catalog '
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'(via authentication). '
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'Defaults to env[OS_SERVICE_ENDPOINT]')
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parser.add_argument('--os-cacert',
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metavar='<ca-certificate>',
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default=env('OS_CACERT', default=None),
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help='Specify a CA bundle file to use in '
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'verifying a TLS (https) server certificate. '
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'Defaults to env[OS_CACERT]')
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parser.add_argument('--os_cacert',
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help=argparse.SUPPRESS)
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parser.add_argument('--insecure',
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default=False,
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action="store_true",
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help='Explicitly allow keystoneclient to perform '
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'"insecure" TLS (https) requests. The '
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'server\'s certificate will not be verified '
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'against any certificate authorities. This '
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'option should be used with caution.')
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parser.add_argument('--os-cert',
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metavar='<certificate>',
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default=env('OS_CERT'),
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help='Defaults to env[OS_CERT]')
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parser.add_argument('--os_cert',
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help=argparse.SUPPRESS)
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parser.add_argument('--os-key',
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metavar='<key>',
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default=env('OS_KEY'),
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help='Defaults to env[OS_KEY]')
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parser.add_argument('--os_key',
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help=argparse.SUPPRESS)
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parser.add_argument('--os-cache',
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default=env('OS_CACHE', default=False),
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action='store_true',
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help='Use the auth token cache. '
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'Default to env[OS_CACHE]')
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parser.add_argument('--os_cache',
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help=argparse.SUPPRESS)
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parser.add_argument('--force-new-token',
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default=False,
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action="store_true",
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dest='force_new_token',
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help="If keyring is available and in used, "
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"token will always be stored and fetched "
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"from the keyring, until the token has "
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"expired. Use this option to request a "
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"new token and replace the existing one "
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"in keyring.")
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parser.add_argument('--stale-duration',
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metavar='<seconds>',
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default=access.STALE_TOKEN_DURATION,
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dest='stale_duration',
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help="Stale duration (in seconds) used to "
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"determine whether a token has expired "
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"when retrieving it from keyring. This "
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"is useful in mitigating process or "
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"network delays. Default is %s seconds." % (
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access.STALE_TOKEN_DURATION))
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#FIXME(heckj):
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# deprecated command line options for essex compatibility. To be
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# removed in Grizzly release cycle.
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parser.add_argument('--token',
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metavar='<service-token>',
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dest='os_token',
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default=env('SERVICE_TOKEN'),
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help=argparse.SUPPRESS)
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parser.add_argument('--endpoint',
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dest='os_endpoint',
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metavar='<service-endpoint>',
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default=env('SERVICE_ENDPOINT'),
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help=argparse.SUPPRESS)
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return parser
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def get_subcommand_parser(self, version):
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parser = self.get_base_parser()
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self.subcommands = {}
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subparsers = parser.add_subparsers(metavar='<subcommand>')
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try:
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actions_module = {
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'2.0': shell_v2_0,
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}[version]
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except KeyError:
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actions_module = shell_v2_0
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self._find_actions(subparsers, actions_module)
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self._find_actions(subparsers, shell_generic)
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self._find_actions(subparsers, shell_bootstrap)
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self._find_actions(subparsers, self)
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self._add_bash_completion_subparser(subparsers)
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return parser
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def _add_bash_completion_subparser(self, subparsers):
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subparser = subparsers.add_parser(
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'bash_completion',
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add_help=False,
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formatter_class=OpenStackHelpFormatter
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)
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self.subcommands['bash_completion'] = subparser
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subparser.set_defaults(func=self.do_bash_completion)
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def _find_actions(self, subparsers, actions_module):
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for attr in (a for a in dir(actions_module) if a.startswith('do_')):
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# I prefer to be hypen-separated instead of underscores.
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command = attr[3:].replace('_', '-')
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callback = getattr(actions_module, attr)
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desc = callback.__doc__ or ''
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help = desc.strip().split('\n')[0]
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arguments = getattr(callback, 'arguments', [])
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subparser = subparsers.add_parser(
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command,
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help=help,
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description=desc,
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add_help=False,
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formatter_class=OpenStackHelpFormatter)
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subparser.add_argument('-h', '--help', action='help',
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help=argparse.SUPPRESS)
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self.subcommands[command] = subparser
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for (args, kwargs) in arguments:
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subparser.add_argument(*args, **kwargs)
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subparser.set_defaults(func=callback)
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def main(self, argv):
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# Parse args once to find version
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parser = self.get_base_parser()
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(options, args) = parser.parse_known_args(argv)
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# build available subcommands based on version
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api_version = options.os_identity_api_version
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subcommand_parser = self.get_subcommand_parser(api_version)
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self.parser = subcommand_parser
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# Handle top-level --help/-h before attempting to parse
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# a command off the command line
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if not argv or options.help:
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self.do_help(options)
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return 0
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# Parse args again and call whatever callback was selected
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args = subcommand_parser.parse_args(argv)
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# Short-circuit and deal with help command right away.
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if args.func == self.do_help:
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self.do_help(args)
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return 0
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elif args.func == self.do_bash_completion:
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self.do_bash_completion(args)
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return 0
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# TODO(heckj): supporting backwards compatibility with environment
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# variables. To be removed after DEVSTACK is updated, ideally in
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# the Grizzly release cycle.
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args.os_token = args.os_token or env('SERVICE_TOKEN')
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args.os_endpoint = args.os_endpoint or env('SERVICE_ENDPOINT')
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if not utils.isunauthenticated(args.func):
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# if the user hasn't provided any auth data
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if not (args.os_token or args.os_endpoint or args.os_username or
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args.os_password or args.os_auth_url):
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raise exc.CommandError('Expecting authentication method via'
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'\n either a service token, '
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'--os-token or env[OS_SERVICE_TOKEN], '
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'\n or credentials, '
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'--os-username or env[OS_USERNAME].')
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# user supplied a token and endpoint and at least one other cred
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if (args.os_token and args.os_endpoint) and (args.os_username or
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args.os_tenant_id or
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args.os_tenant_name or
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args.os_password or
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args.os_auth_url):
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msg = ('WARNING: Bypassing authentication using a token & '
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'endpoint (authentication credentials are being '
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'ignored).')
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print msg
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# if it looks like the user wants to provide a credentials
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# but is missing something
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if (not (args.os_token and args.os_endpoint)
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and ((args.os_username or args.os_password or args.os_auth_url)
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and not (args.os_username and args.os_password and
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args.os_auth_url))):
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if not args.os_username:
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raise exc.CommandError(
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'Expecting a username provided via either '
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'--os-username or env[OS_USERNAME]')
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if not args.os_auth_url:
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raise exc.CommandError(
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'Expecting an auth URL via either --os-auth-url or '
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'env[OS_AUTH_URL]')
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if not args.os_password:
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# No password, If we've got a tty, try prompting for it
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if hasattr(sys.stdin, 'isatty') and sys.stdin.isatty():
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# Check for Ctl-D
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try:
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args.os_password = getpass.getpass('OS Password: ')
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except EOFError:
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pass
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# No password because we did't have a tty or the
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# user Ctl-D when prompted?
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if not args.os_password:
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raise exc.CommandError(
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'Expecting a password provided via either '
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'--os-password, env[OS_PASSWORD], or '
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'prompted response')
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# if it looks like the user wants to provide a service token
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# but is missing something
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if args.os_token or args.os_endpoint and not (
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args.os_token and args.os_endpoint):
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if not args.os_token:
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raise exc.CommandError(
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'Expecting a token provided via either --os-token or '
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'env[OS_SERVICE_TOKEN]')
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if not args.os_endpoint:
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raise exc.CommandError(
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'Expecting an endpoint provided via either '
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'--os-endpoint or env[OS_SERVICE_ENDPOINT]')
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if utils.isunauthenticated(args.func):
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self.cs = shell_generic.CLIENT_CLASS(endpoint=args.os_auth_url,
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cacert=args.os_cacert,
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key=args.os_key,
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cert=args.os_cert,
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insecure=args.insecure,
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debug=args.debug)
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else:
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token = None
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if args.os_token and args.os_endpoint:
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token = args.os_token
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api_version = options.os_identity_api_version
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self.cs = self.get_api_class(api_version)(
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username=args.os_username,
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tenant_name=args.os_tenant_name,
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tenant_id=args.os_tenant_id,
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token=token,
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endpoint=args.os_endpoint,
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password=args.os_password,
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auth_url=args.os_auth_url,
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region_name=args.os_region_name,
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cacert=args.os_cacert,
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key=args.os_key,
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cert=args.os_cert,
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insecure=args.insecure,
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debug=args.debug,
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use_keyring=args.os_cache,
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force_new_token=args.force_new_token,
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stale_duration=args.stale_duration)
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try:
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args.func(self.cs, args)
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except exc.Unauthorized:
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raise exc.CommandError("Invalid OpenStack Identity credentials.")
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except exc.AuthorizationFailure:
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raise exc.CommandError("Unable to authorize user")
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def get_api_class(self, version):
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try:
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return {
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"2.0": shell_v2_0.CLIENT_CLASS,
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}[version]
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except KeyError:
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return shell_v2_0.CLIENT_CLASS
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def do_bash_completion(self, args):
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"""
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Prints all of the commands and options to stdout.
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The keystone.bash_completion script doesn't have to hard code them.
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"""
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commands = set()
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options = set()
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for sc_str, sc in self.subcommands.items():
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commands.add(sc_str)
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for option in sc._optionals._option_string_actions.keys():
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options.add(option)
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commands.remove('bash-completion')
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commands.remove('bash_completion')
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print ' '.join(commands | options)
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@utils.arg('command', metavar='<subcommand>', nargs='?',
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help='Display help for <subcommand>')
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def do_help(self, args):
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"""
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Display help about this program or one of its subcommands.
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"""
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if getattr(args, 'command', None):
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if args.command in self.subcommands:
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self.subcommands[args.command].print_help()
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else:
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raise exc.CommandError("'%s' is not a valid subcommand" %
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args.command)
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else:
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self.parser.print_help()
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# I'm picky about my shell help.
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class OpenStackHelpFormatter(argparse.HelpFormatter):
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def start_section(self, heading):
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# Title-case the headings
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heading = '%s%s' % (heading[0].upper(), heading[1:])
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super(OpenStackHelpFormatter, self).start_section(heading)
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def main():
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try:
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OpenStackIdentityShell().main(sys.argv[1:])
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except Exception as e:
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print >> sys.stderr, e
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sys.exit(1)
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if __name__ == "__main__":
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sys.exit(main())
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