# Copyright 2012-2013 OpenStack Foundation # # 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. # """Command-line interface to the OpenStack APIs""" import argparse import getpass import logging import os import sys import traceback from cliff import app from cliff import command from cliff import complete from cliff import help import openstackclient from openstackclient.common import clientmanager from openstackclient.common import commandmanager from openstackclient.common import exceptions as exc from openstackclient.common import openstackkeyring from openstackclient.common import restapi from openstackclient.common import utils from openstackclient.identity import client as identity_client KEYRING_SERVICE = 'openstack' DEFAULT_DOMAIN = 'default' def env(*vars, **kwargs): """Search for the first defined of possibly many env vars Returns the first environment variable defined in vars, or returns the default defined in kwargs. """ for v in vars: value = os.environ.get(v, None) if value: return value return kwargs.get('default', '') class OpenStackShell(app.App): CONSOLE_MESSAGE_FORMAT = '%(levelname)s: %(name)s %(message)s' log = logging.getLogger(__name__) def __init__(self): # Patch command.Command to add a default auth_required = True command.Command.auth_required = True command.Command.best_effort = False # But not help help.HelpCommand.auth_required = False complete.CompleteCommand.best_effort = True super(OpenStackShell, self).__init__( description=__doc__.strip(), version=openstackclient.__version__, command_manager=commandmanager.CommandManager('openstack.cli')) # Until we have command line arguments parsed, dump any stack traces self.dump_stack_trace = True # This is instantiated in initialize_app() only when using # password flow auth self.auth_client = None # Assume TLS host certificate verification is enabled self.verify = True # Get list of extension modules self.ext_modules = clientmanager.get_extension_modules( 'openstack.cli.extension', ) # Loop through extensions to get parser additions for mod in self.ext_modules: self.parser = mod.build_option_parser(self.parser) # NOTE(dtroyer): This hack changes the help action that Cliff # automatically adds to the parser so we can defer # its execution until after the api-versioned commands # have been loaded. There doesn't seem to be a # way to edit/remove anything from an existing parser. # Replace the cliff-added help.HelpAction to defer its execution self.DeferredHelpAction = None for a in self.parser._actions: if type(a) == help.HelpAction: # Found it, save and replace it self.DeferredHelpAction = a # These steps are argparse-implementation-dependent self.parser._actions.remove(a) if self.parser._option_string_actions['-h']: del self.parser._option_string_actions['-h'] if self.parser._option_string_actions['--help']: del self.parser._option_string_actions['--help'] # Make a new help option to just set a flag self.parser.add_argument( '-h', '--help', action='store_true', dest='deferred_help', default=False, help="Show this help message and exit", ) def run(self, argv): try: return super(OpenStackShell, self).run(argv) except Exception as e: if not logging.getLogger('').handlers: logging.basicConfig() if self.dump_stack_trace: self.log.error(traceback.format_exc(e)) else: self.log.error('Exception raised: ' + str(e)) return 1 def build_option_parser(self, description, version): parser = super(OpenStackShell, self).build_option_parser( description, version) # Global arguments parser.add_argument( '--os-auth-url', metavar='', default=env('OS_AUTH_URL'), help='Authentication URL (Env: OS_AUTH_URL)') parser.add_argument( '--os-domain-name', metavar='', default=env('OS_DOMAIN_NAME'), help='Domain name of the requested domain-level ' 'authorization scope (Env: OS_DOMAIN_NAME)', ) parser.add_argument( '--os-domain-id', metavar='', default=env('OS_DOMAIN_ID'), help='Domain ID of the requested domain-level ' 'authorization scope (Env: OS_DOMAIN_ID)', ) parser.add_argument( '--os-project-name', metavar='', default=env('OS_PROJECT_NAME', default=env('OS_TENANT_NAME')), help='Project name of the requested project-level ' 'authorization scope (Env: OS_PROJECT_NAME)', ) parser.add_argument( '--os-tenant-name', metavar='', dest='os_project_name', help=argparse.SUPPRESS, ) parser.add_argument( '--os-project-id', metavar='', default=env('OS_PROJECT_ID', default=env('OS_TENANT_ID')), help='Project ID of the requested project-level ' 'authorization scope (Env: OS_PROJECT_ID)', ) parser.add_argument( '--os-tenant-id', metavar='', dest='os_project_id', help=argparse.SUPPRESS, ) parser.add_argument( '--os-username', metavar='', default=utils.env('OS_USERNAME'), help='Authentication username (Env: OS_USERNAME)') parser.add_argument( '--os-password', metavar='', default=utils.env('OS_PASSWORD'), help='Authentication password (Env: OS_PASSWORD)') parser.add_argument( '--os-user-domain-name', metavar='', default=utils.env('OS_USER_DOMAIN_NAME'), help='Domain name of the user (Env: OS_USER_DOMAIN_NAME)') parser.add_argument( '--os-user-domain-id', metavar='', default=utils.env('OS_USER_DOMAIN_ID'), help='Domain ID of the user (Env: OS_USER_DOMAIN_ID)') parser.add_argument( '--os-project-domain-name', metavar='', default=utils.env('OS_PROJECT_DOMAIN_NAME'), help='Domain name of the project which is the requested ' 'project-level authorization scope ' '(Env: OS_PROJECT_DOMAIN_NAME)') parser.add_argument( '--os-project-domain-id', metavar='', default=utils.env('OS_PROJECT_DOMAIN_ID'), help='Domain ID of the project which is the requested ' 'project-level authorization scope ' '(Env: OS_PROJECT_DOMAIN_ID)') parser.add_argument( '--os-region-name', metavar='', default=env('OS_REGION_NAME'), help='Authentication region name (Env: OS_REGION_NAME)') parser.add_argument( '--os-cacert', metavar='', default=env('OS_CACERT'), help='CA certificate bundle file (Env: OS_CACERT)') verify_group = parser.add_mutually_exclusive_group() verify_group.add_argument( '--verify', action='store_true', help='Verify server certificate (default)', ) verify_group.add_argument( '--insecure', action='store_true', help='Disable server certificate verification', ) parser.add_argument( '--os-default-domain', metavar='', default=env( 'OS_DEFAULT_DOMAIN', default=DEFAULT_DOMAIN), help='Default domain ID, default=' + DEFAULT_DOMAIN + ' (Env: OS_DEFAULT_DOMAIN)') parser.add_argument( '--os-token', metavar='', default=env('OS_TOKEN'), help='Defaults to env[OS_TOKEN]') parser.add_argument( '--os-url', metavar='', default=env('OS_URL'), help='Defaults to env[OS_URL]') env_os_keyring = env('OS_USE_KEYRING', default=False) if type(env_os_keyring) == str: if env_os_keyring.lower() in ['true', '1']: env_os_keyring = True else: env_os_keyring = False parser.add_argument('--os-use-keyring', default=env_os_keyring, action='store_true', help='Use keyring to store password, ' 'default=False (Env: OS_USE_KEYRING)') parser.add_argument( '--os-identity-api-version', metavar='', default=env( 'OS_IDENTITY_API_VERSION', default=identity_client.DEFAULT_IDENTITY_API_VERSION), help='Identity API version, default=' + identity_client.DEFAULT_IDENTITY_API_VERSION + ' (Env: OS_IDENTITY_API_VERSION)') return parser def authenticate_user(self): """Make sure the user has provided all of the authentication info we need. """ self.log.debug('validating authentication options') if self.options.os_token or self.options.os_url: # Token flow auth takes priority if not self.options.os_token: raise exc.CommandError( "You must provide a token via" " either --os-token or env[OS_TOKEN]") if not self.options.os_url: raise exc.CommandError( "You must provide a service URL via" " either --os-url or env[OS_URL]") else: # Validate password flow auth if not self.options.os_username: raise exc.CommandError( "You must provide a username via" " either --os-username or env[OS_USERNAME]") self.get_password_from_keyring() if not self.options.os_password: # No password, if we've got a tty, try prompting for it if hasattr(sys.stdin, 'isatty') and sys.stdin.isatty(): # Check for Ctl-D try: self.options.os_password = getpass.getpass() self.set_password_in_keyring() except EOFError: pass # No password because we did't have a tty or the # user Ctl-D when prompted? if not self.options.os_password: raise exc.CommandError( "You must provide a password via" " either --os-password, or env[OS_PASSWORD], " " or prompted response") if not ((self.options.os_project_id or self.options.os_project_name) or (self.options.os_domain_id or self.options.os_domain_name)): raise exc.CommandError( "You must provide authentication scope as a project " "or a domain via --os-project-id or env[OS_PROJECT_ID], " "--os-project-name or env[OS_PROJECT_NAME], " "--os-domain-id or env[OS_DOMAIN_ID], or" "--os-domain-name or env[OS_DOMAIN_NAME].") if not self.options.os_auth_url: raise exc.CommandError( "You must provide an auth url via" " either --os-auth-url or via env[OS_AUTH_URL]") self.client_manager = clientmanager.ClientManager( token=self.options.os_token, url=self.options.os_url, auth_url=self.options.os_auth_url, domain_id=self.options.os_domain_id, domain_name=self.options.os_domain_name, project_name=self.options.os_project_name, project_id=self.options.os_project_id, user_domain_id=self.options.os_user_domain_id, user_domain_name=self.options.os_user_domain_name, project_domain_id=self.options.os_project_domain_id, project_domain_name=self.options.os_project_domain_name, username=self.options.os_username, password=self.options.os_password, region_name=self.options.os_region_name, verify=self.verify, api_version=self.api_version, ) return def init_keyring_backend(self): """Initialize openstack backend to use for keyring""" return openstackkeyring.os_keyring() def get_password_from_keyring(self): """Get password from keyring, if it's set""" if self.options.os_use_keyring: service = KEYRING_SERVICE backend = self.init_keyring_backend() if not self.options.os_password: password = backend.get_password(service, self.options.os_username) self.options.os_password = password def set_password_in_keyring(self): """Set password in keyring for this user""" if self.options.os_use_keyring: service = KEYRING_SERVICE backend = self.init_keyring_backend() if self.options.os_password: password = backend.get_password(service, self.options.os_username) # either password is not set in keyring, or it is different if password != self.options.os_password: backend.set_password(service, self.options.os_username, self.options.os_password) def initialize_app(self, argv): """Global app init bits: * set up API versions * validate authentication info * authenticate against Identity if requested """ super(OpenStackShell, self).initialize_app(argv) # Set requests logging to a useful level requests_log = logging.getLogger("requests") if self.options.debug: requests_log.setLevel(logging.DEBUG) self.dump_stack_trace = True else: requests_log.setLevel(logging.WARNING) self.dump_stack_trace = False # Save default domain self.default_domain = self.options.os_default_domain # Stash selected API versions for later self.api_version = { 'identity': self.options.os_identity_api_version, } # Loop through extensions to get API versions for mod in self.ext_modules: ver = getattr(self.options, mod.API_VERSION_OPTION, None) if ver: self.api_version[mod.API_NAME] = ver self.log.debug('%s API version %s' % (mod.API_NAME, ver)) # Add the API version-specific commands for api in self.api_version.keys(): version = '.v' + self.api_version[api].replace('.', '_') cmd_group = 'openstack.' + api.replace('-', '_') + version self.log.debug('command group %s' % cmd_group) self.command_manager.add_command_group(cmd_group) # Commands that span multiple APIs self.command_manager.add_command_group( 'openstack.common') # This is the naive extension implementation referred to in # blueprint 'client-extensions' # Extension modules can register their commands in an # 'openstack.extension' entry point group: # entry_points={ # 'openstack.extension': [ # 'list_repo=qaz.github.repo:ListRepo', # 'show_repo=qaz.github.repo:ShowRepo', # ], # } self.command_manager.add_command_group( 'openstack.extension') # call InitializeXxx() here # set up additional clients to stuff in to client_manager?? # Handle deferred help and exit if self.options.deferred_help: self.DeferredHelpAction(self.parser, self.parser, None, None) # Set up common client session if self.options.os_cacert: self.verify = self.options.os_cacert else: self.verify = not self.options.insecure self.restapi = restapi.RESTApi( verify=self.verify, debug=self.options.debug, ) def prepare_to_run_command(self, cmd): """Set up auth and API versions""" self.log.debug('prepare_to_run_command %s', cmd.__class__.__name__) if not cmd.auth_required: return if cmd.best_effort: try: self.authenticate_user() self.restapi.set_auth(self.client_manager.identity.auth_token) except Exception: pass else: self.authenticate_user() self.restapi.set_auth(self.client_manager.identity.auth_token) return def clean_up(self, cmd, result, err): self.log.debug('clean_up %s', cmd.__class__.__name__) if err: self.log.debug('got an error: %s', err) def interact(self): # NOTE(dtroyer): Maintain the old behaviour for interactive use as # this path does not call prepare_to_run_command() self.authenticate_user() self.restapi.set_auth(self.client_manager.identity.auth_token) super(OpenStackShell, self).interact() def main(argv=sys.argv[1:]): return OpenStackShell().run(argv) if __name__ == "__main__": sys.exit(main(sys.argv[1:]))