Source code for keystone.api.ec2tokens

# 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
# 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.

# This file handles all flask-restful resources for /v3/ec2tokens

import urllib.parse

import flask
import http.client
from keystoneclient.contrib.ec2 import utils as ec2_utils
from oslo_serialization import jsonutils

from keystone.api._shared import EC2_S3_Resource
from keystone.api._shared import json_home_relations
from keystone.common import render_token
from keystone.common import utils
from keystone import exception
from keystone.i18n import _
from keystone.server import flask as ks_flask

CRED_TYPE_EC2 = 'ec2'

[docs]class EC2TokensResource(EC2_S3_Resource.ResourceBase): @staticmethod def _check_signature(creds_ref, credentials): signer = ec2_utils.Ec2Signer(creds_ref['secret']) signature = signer.generate(credentials) # NOTE(davechecn): credentials.get('signature') is not guaranteed to # exist, we need to check it explicitly. if credentials.get('signature'): if utils.auth_str_equal(credentials['signature'], signature): return True # NOTE(vish): Some client libraries don't use the port when # signing requests, so try again without the port. elif ':' in credentials['host']: parsed = urllib.parse.urlsplit('//' + credentials['host']) credentials['host'] = parsed.hostname # NOTE(davechen): we need to reinitialize 'signer' to avoid # contaminated status of signature, this is similar with # other programming language libraries, JAVA for example. signer = ec2_utils.Ec2Signer(creds_ref['secret']) signature = signer.generate(credentials) if utils.auth_str_equal( credentials['signature'], signature): return True raise exception.Unauthorized(_('Invalid EC2 signature.')) # Raise the exception when credentials.get('signature') is None else: raise exception.Unauthorized( _('EC2 signature not supplied.'))
[docs] @ks_flask.unenforced_api def post(self): """Authenticate ec2 token. POST /v3/ec2tokens """ token = self.handle_authenticate() token_reference = render_token.render_token_response_from_model(token) resp_body = jsonutils.dumps(token_reference) response = flask.make_response(resp_body, http.client.OK) response.headers['X-Subject-Token'] = response.headers['Content-Type'] = 'application/json' return response
[docs]class EC2TokensAPI(ks_flask.APIBase): _name = 'ec2tokens' _import_name = __name__ resources = [] resource_mapping = [ ks_flask.construct_resource_map( resource=EC2TokensResource, url='/ec2tokens', resource_kwargs={}, rel='ec2tokens', resource_relation_func=( json_home_relations.os_ec2_resource_rel_func)) ]
APIs = (EC2TokensAPI,)