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import eventlet
eventlet.monkey_patch(socket=True, select=True)
import json
import os
import requests
from barbicanclient.secrets import Secret
from barbicanclient.orders import Order
from barbicanclient.common import auth
from barbicanclient.openstack.common import log
from barbicanclient.common.exceptions import ClientException
from barbicanclient.openstack.common.gettextutils import _
from urlparse import urljoin
LOG = log.getLogger(__name__)
log.setup('barbicanclient')
class Connection(object):
SECRETS_PATH = 'secrets'
ORDERS_PATH = 'orders'
def __init__(self, auth_endpoint=None, user=None, key=None, tenant=None,
token=None, **kwargs):
"""
Authenticate and connect to the service endpoint, which can be
received through authentication.
Environment variables will be used by default when their corresponding
arguments are not passed in.
:param auth_endpoint: The auth URL to authenticate against
default: env('OS_AUTH_URL')
:param user: The user to authenticate as
default: env('OS_USERNAME')
:param key: The API key or password to auth with
default: env('OS_PASSWORD')
:param tenant: The tenant ID
default: env('OS_TENANT_NAME')
:keyword param endpoint: The barbican endpoint to connect to
default: env('BARBICAN_ENDPOINT')
If a token is provided, an endpoint should be as well.
"""
LOG.debug(_("Creating Connection object"))
self.env = kwargs.get('fake_env') or env
self._auth_endpoint = auth_endpoint or self.env('OS_AUTH_URL')
self._user = user or self.env('OS_USERNAME')
self._key = key or self.env('OS_PASSWORD')
self._tenant = tenant or self.env('OS_TENANT_NAME')
if not all([self._auth_endpoint, self._user, self._key, self._tenant]):
raise ClientException("The authorization endpoint, username, key,"
" and tenant name should either be passed i"
"n or defined as environment variables.")
self.authenticate = kwargs.get('authenticate') or auth.authenticate
self.request = kwargs.get('request') or requests.request
self._endpoint = (kwargs.get('endpoint') or
self.env('BARBICAN_ENDPOINT'))
self._cacert = kwargs.get('cacert')
self.connect(token=(token or self.env('AUTH_TOKEN')))
@property
def _conn(self):
"""Property to enable decorators to work properly"""
return self
@property
def auth_endpoint(self):
"""The fully-qualified URI of the auth endpoint"""
return self._auth_endpoint
@property
def endpoint(self):
"""The fully-qualified URI of the endpoint"""
return self._endpoint
@endpoint.setter
def endpoint(self, value):
self._endpoint = value
def connect(self, token=None):
"""
Establishes a connection. If token is not None or empty, it will be
used for this connection, and authentication will not take place.
:param token: An authentication token
"""
LOG.debug(_("Establishing connection"))
self._session = requests.Session()
# headers = {"Client-Id": self._client_id}
# self._session.headers.update(headers)
self._session.verify = True
if token:
self.auth_token = token
else:
LOG.debug(_("Authenticating token"))
endpoint, self.auth_token = self.authenticate(
self._auth_endpoint,
self._user,
self._key,
self._tenant,
service_type='key-store',
endpoint=self._endpoint,
cacert=self._cacert
)
if self.endpoint is None:
self.endpoint = endpoint
@property
def auth_token(self):
try:
return self._session.headers['X-Auth-Token']
except KeyError:
return None
@auth_token.setter
def auth_token(self, value):
self._token = value
self._session.headers['X-Auth-Token'] = value
def list_secrets(self, limit=10, offset=0):
"""
Returns a tuple containing three items: a list of secrets pertaining
to the given offset and limit, a reference to the previous set of
secrets, and a reference to the next set of secrets. Either of the
references may be None.
:param limit: The limit to the number of secrets to list
:param offset: The offset from the beginning to start listing
"""
LOG.debug(_("Listing secrets - offset: {0}, limit: {1}").format(offset,
limit))
href = "{0}/{1}?limit={2}&offset={3}".format(self._tenant,
self.SECRETS_PATH,
limit, offset)
return self.list_secrets_by_href(href)
def list_secrets_by_href(self, href):
"""
Returns a tuple containing three items: a list of secrets pertaining
to the offset and limit within href, a reference to the previous set
of secrets, and a reference to the next set of secrets. Either of the
references may be None.
:param href: The full secrets URI
"""
LOG.debug(_("Listing secrets by href"))
LOG.debug("href: {0}".format(href))
if href is None:
return [], None, None
hdrs, body = self._perform_http(href=href, method='GET')
LOG.debug(_("Response - headers: {0}\nbody: {1}").format(hdrs, body))
secrets_dict = body['secrets']
secrets = [Secret(self._conn, s) for s in secrets_dict]
prev_ref = body.get('previous')
next_ref = body.get('next')
return secrets, prev_ref, next_ref
def create_secret(self,
name=None,
payload=None,
payload_content_type=None,
payload_content_encoding=None,
algorithm=None,
bit_length=None,
cypher_type=None,
expiration=None):
"""
Creates and returns a Secret object with all of its metadata filled in.
:param name: A friendly name for the secret
:param payload: The unencrypted secret
:param payload_content_type: The format/type of the secret
:param payload_content_encoding: The encoding of the secret
:param algorithm: The algorithm the secret is used with
:param bit_length: The bit length of the secret
:param cypher_type: The cypher type (e.g. block cipher mode)
:param expiration: The expiration time of the secret in ISO 8601 format
"""
LOG.debug(_("Creating secret of payload content type {0}").format(
payload_content_type))
href = "{0}/{1}".format(self._tenant, self.SECRETS_PATH)
LOG.debug(_("href: {0}").format(href))
secret_dict = {}
secret_dict['name'] = name
secret_dict['payload'] = payload
secret_dict['payload_content_type'] = payload_content_type
secret_dict['payload_content_encoding'] = payload_content_encoding
secret_dict['algorithm'] = algorithm
secret_dict['cypher_type'] = cypher_type
secret_dict['bit_length'] = bit_length
secret_dict['expiration'] = expiration
self._remove_empty_keys(secret_dict)
LOG.debug(_("Request body: {0}").format(secret_dict))
hdrs, body = self._perform_http(href=href,
method='POST',
request_body=json.dumps(secret_dict))
LOG.debug(_("Response - headers: {0}\nbody: {1}").format(hdrs, body))
return self.get_secret(body['secret_ref'])
def delete_secret_by_id(self, secret_id):
"""
Deletes a secret
:param secret_id: The UUID of the secret
"""
href = "{0}/{1}/{2}".format(self._tenant, self.SECRETS_PATH, secret_id)
LOG.info(_("Deleting secret - Secret ID: {0}").format(secret_id))
return self.delete_secret(href)
def delete_secret(self, href):
"""
Deletes a secret
:param href: The full URI of the secret
"""
hdrs, body = self._perform_http(href=href, method='DELETE')
LOG.debug(_("Response - headers: {0}\nbody: {1}").format(hdrs, body))
def get_secret_by_id(self, secret_id):
"""
Returns a Secret object
:param secret_id: The UUID of the secret
"""
LOG.debug(_("Getting secret - Secret ID: {0}").format(secret_id))
href = "{0}/{1}/{2}".format(self._tenant, self.SECRETS_PATH, secret_id)
return self.get_secret(href)
def get_secret(self, href):
"""
Returns a Secret object
:param href: The full URI of the secret
"""
hdrs, body = self._perform_http(href=href, method='GET')
LOG.debug(_("Response - headers: {0}\nbody: {1}").format(hdrs, body))
return Secret(self._conn, body)
def get_raw_secret_by_id(self, secret_id, payload_content_type):
"""
Returns the raw secret
:param secret_id: The UUID of the secret
:param payload_content_type: The data type of the secret
"""
LOG.debug(_("Getting raw secret - Secret ID: {0}").format(secret_id))
href = "{0}/{1}/{2}".format(self._tenant, self.SECRETS_PATH, secret_id)
return self.get_raw_secret(href, payload_content_type)
def get_raw_secret(self, href, payload_content_type):
"""
Returns the raw secret
:param href: The reference to the secret
:param payload_content_type: The data type of the secret
"""
hdrs = {"Accept": payload_content_type}
hdrs, body = self._perform_http(href=href, method='GET', headers=hdrs,
parse_json=False)
LOG.debug(_("Response - headers: {0}\nbody: {1}").format(hdrs, body))
return body
def list_orders(self, limit=10, offset=0):
"""
Returns a tuple containing three items: a list of orders pertaining
to the given offset and limit, a reference to the previous set of
orders, and a reference to the next set of orders. Either of the
references may be None.
:param limit: The limit to the number of orders to list
:param offset: The offset from the beginning to start listing
"""
LOG.debug(_("Listing orders - offset: {0}, limit: {1}").format(offset,
limit))
href = "{0}/{1}?limit={2}&offset={3}".format(self._tenant,
self.ORDERS_PATH,
limit, offset)
return self.list_orders_by_href(href)
def list_orders_by_href(self, href):
"""
Returns a tuple containing three items: a list of orders pertaining
to the offset and limit within href, a reference to the previous set
of orders, and a reference to the next set of orders. Either of the
references may be None.
:param href: The full orders URI
"""
LOG.debug(_("Listing orders by href"))
LOG.debug("href: {0}".format(href))
if href is None:
return [], None, None
hdrs, body = self._perform_http(href=href, method='GET')
LOG.debug(_("Response - headers: {0}\nbody: {1}").format(hdrs, body))
orders_dict = body['orders']
orders = [Order(self._conn, o) for o in orders_dict]
prev_ref = body.get('previous')
next_ref = body.get('next')
return orders, prev_ref, next_ref
def create_order(self,
name=None,
payload_content_type='application/octet-stream',
algorithm='aes',
bit_length=256,
cypher_type='cbc',
expiration=None):
"""
Creates and returns an Order object with all of its metadata filled in.
:param name: A friendly name for the secret
:param algorithm: The algorithm the secret is used with
:param bit_length: The bit length of the secret
:param cypher_type: The cypher type (e.g. block cipher mode)
:param expiration: The expiration time of the secret in ISO 8601 format
"""
LOG.debug(_("Creating order"))
href = "{0}/{1}".format(self._tenant, self.ORDERS_PATH)
LOG.debug("href: {0}".format(href))
order_dict = {'secret': {}}
order_dict['secret']['name'] = name
order_dict['secret'][
'payload_content_type'] = payload_content_type
order_dict['secret']['algorithm'] = algorithm
order_dict['secret']['bit_length'] = bit_length
order_dict['secret']['cypher_type'] = cypher_type
order_dict['secret']['expiration'] = expiration
self._remove_empty_keys(order_dict['secret'])
LOG.debug(_("Request body: {0}").format(order_dict['secret']))
hdrs, body = self._perform_http(href=href,
method='POST',
request_body=json.dumps(order_dict))
LOG.debug(_("Response - headers: {0}\nbody: {1}").format(hdrs, body))
return self.get_order(body['order_ref'])
def delete_order_by_id(self, order_id):
"""
Deletes an order
:param order_id: The UUID of the order
"""
LOG.info(_("Deleting order - Order ID: {0}").format(order_id))
href = "{0}/{1}/{2}".format(self._tenant, self.ORDERS_PATH, order_id)
return self.delete_order(href)
def delete_order(self, href):
"""
Deletes an order
:param href: The full URI of the order
"""
hdrs, body = self._perform_http(href=href, method='DELETE')
LOG.debug(_("Response - headers: {0}\nbody: {1}").format(hdrs, body))
def get_order_by_id(self, order_id):
"""
Returns an Order object
:param order_id: The UUID of the order
"""
LOG.debug(_("Getting order - Order ID: {0}").format(order_id))
href = "{0}/{1}/{2}".format(self._tenant, self.ORDERS_PATH, order_id)
return self.get_order(href)
def get_order(self, href):
"""
Returns an Order object
:param href: The full URI of the order
"""
hdrs, body = self._perform_http(href=href, method='GET')
LOG.debug(_("Response - headers: {0}\nbody: {1}").format(hdrs, body))
return Order(self._conn, body)
def _remove_empty_keys(self, dictionary):
for k in dictionary.keys():
if dictionary[k] is None:
dictionary.pop(k)
def _perform_http(self, method, href, request_body='', headers={},
parse_json=True):
"""
Perform an HTTP operation, checking for appropriate
errors, etc. and returns the response
Returns the headers and body as a tuple.
:param method: The http method to use (GET, PUT, etc)
:param body: The optional body to submit
:param headers: Any additional headers to submit
:param parse_json: Whether the response body should be parsed as json
"""
if not isinstance(request_body, str):
request_body = json.dumps(request_body)
if not self.endpoint.endswith('/'):
self.endpoint += '/'
url = urljoin(self.endpoint, href)
headers['X-Auth-Token'] = self.auth_token
response = self.request(method=method, url=url, data=request_body,
headers=headers)
# Check if the status code is 2xx class
if not response.ok:
LOG.error('Bad response: {0}'.format(response.status_code))
raise ClientException(href=href, method=method,
http_status=response.status_code,
http_response_content=response.content)
if response.content and parse_json is True:
resp_body = json.loads(response.content)
elif response.content and parse_json is False:
resp_body = response.content
else:
resp_body = ''
return response.headers, resp_body
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.
Source: Keystone's shell.py
"""
for v in vars:
value = os.environ.get(v, None)
if value:
return value
return kwargs.get('default', '')
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