102 lines
3.2 KiB
Python
102 lines
3.2 KiB
Python
# vim: tabstop=4 shiftwidth=4 softtabstop=4
|
|
|
|
# Copyright 2012 OpenStack Foundation
|
|
# Copyright 2010 United States Government as represented by the
|
|
# Administrator of the National Aeronautics and Space Administration.
|
|
# 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.
|
|
|
|
"""
|
|
Starting point for routing EC2 requests.
|
|
|
|
"""
|
|
|
|
import urlparse
|
|
|
|
from eventlet.green import httplib
|
|
from oslo.config import cfg
|
|
import webob.dec
|
|
import webob.exc
|
|
|
|
from keystone.common import config
|
|
from keystone.common import wsgi
|
|
from keystone.openstack.common import jsonutils
|
|
|
|
keystone_ec2_opts = [
|
|
cfg.StrOpt('keystone_ec2_url',
|
|
default='http://localhost:5000/v2.0/ec2tokens',
|
|
help='URL to get token from ec2 request.'),
|
|
]
|
|
|
|
CONF = config.CONF
|
|
CONF.register_opts(keystone_ec2_opts)
|
|
|
|
|
|
class EC2Token(wsgi.Middleware):
|
|
"""Authenticate an EC2 request with keystone and convert to token."""
|
|
|
|
@webob.dec.wsgify(RequestClass=wsgi.Request)
|
|
def __call__(self, req):
|
|
# Read request signature and access id.
|
|
try:
|
|
signature = req.params['Signature']
|
|
access = req.params['AWSAccessKeyId']
|
|
except KeyError:
|
|
raise webob.exc.HTTPBadRequest()
|
|
|
|
# Make a copy of args for authentication and signature verification.
|
|
auth_params = dict(req.params)
|
|
# Not part of authentication args
|
|
auth_params.pop('Signature')
|
|
|
|
# Authenticate the request.
|
|
creds = {
|
|
'ec2Credentials': {
|
|
'access': access,
|
|
'signature': signature,
|
|
'host': req.host,
|
|
'verb': req.method,
|
|
'path': req.path,
|
|
'params': auth_params,
|
|
}
|
|
}
|
|
creds_json = jsonutils.dumps(creds)
|
|
headers = {'Content-Type': 'application/json'}
|
|
|
|
# Disable 'has no x member' pylint error
|
|
# for httplib and urlparse
|
|
# pylint: disable-msg=E1101
|
|
o = urlparse.urlparse(CONF.keystone_ec2_url)
|
|
if o.scheme == 'http':
|
|
conn = httplib.HTTPConnection(o.netloc)
|
|
else:
|
|
conn = httplib.HTTPSConnection(o.netloc)
|
|
conn.request('POST', o.path, body=creds_json, headers=headers)
|
|
response = conn.getresponse().read()
|
|
conn.close()
|
|
|
|
# NOTE(vish): We could save a call to keystone by
|
|
# having keystone return token, tenant,
|
|
# user, and roles from this call.
|
|
|
|
result = jsonutils.loads(response)
|
|
try:
|
|
token_id = result['access']['token']['id']
|
|
except (AttributeError, KeyError):
|
|
raise webob.exc.HTTPBadRequest()
|
|
|
|
# Authenticated!
|
|
req.headers['X-Auth-Token'] = token_id
|
|
return self.application
|