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client.py
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client.py
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# Copyright 2014 Google Inc. 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.
"""An OAuth 2.0 client.
Tools for interacting with OAuth 2.0 protected resources.
"""
import base64
import collections
import copy
import datetime
import json
import logging
import os
import socket
import sys
import tempfile
import time
import shutil
import six
from six.moves import http_client
from six.moves import urllib
import httplib2
from oauth2client import GOOGLE_AUTH_URI
from oauth2client import GOOGLE_DEVICE_URI
from oauth2client import GOOGLE_REVOKE_URI
from oauth2client import GOOGLE_TOKEN_URI
from oauth2client import GOOGLE_TOKEN_INFO_URI
from oauth2client._helpers import _from_bytes
from oauth2client._helpers import _to_bytes
from oauth2client._helpers import _urlsafe_b64decode
from oauth2client import clientsecrets
from oauth2client import util
__author__ = 'jcgregorio@google.com (Joe Gregorio)'
HAS_OPENSSL = False
HAS_CRYPTO = False
try:
from oauth2client import crypt
HAS_CRYPTO = True
if crypt.OpenSSLVerifier is not None:
HAS_OPENSSL = True
except ImportError:
pass
logger = logging.getLogger(__name__)
# Expiry is stored in RFC3339 UTC format
EXPIRY_FORMAT = '%Y-%m-%dT%H:%M:%SZ'
# Which certs to use to validate id_tokens received.
ID_TOKEN_VERIFICATION_CERTS = 'https://www.googleapis.com/oauth2/v1/certs'
# This symbol previously had a typo in the name; we keep the old name
# around for now, but will remove it in the future.
ID_TOKEN_VERIFICATON_CERTS = ID_TOKEN_VERIFICATION_CERTS
# Constant to use for the out of band OAuth 2.0 flow.
OOB_CALLBACK_URN = 'urn:ietf:wg:oauth:2.0:oob'
# Google Data client libraries may need to set this to [401, 403].
REFRESH_STATUS_CODES = (http_client.UNAUTHORIZED,)
# The value representing user credentials.
AUTHORIZED_USER = 'authorized_user'
# The value representing service account credentials.
SERVICE_ACCOUNT = 'service_account'
# The environment variable pointing the file with local
# Application Default Credentials.
GOOGLE_APPLICATION_CREDENTIALS = 'GOOGLE_APPLICATION_CREDENTIALS'
# The ~/.config subdirectory containing gcloud credentials. Intended
# to be swapped out in tests.
_CLOUDSDK_CONFIG_DIRECTORY = 'gcloud'
# The environment variable name which can replace ~/.config if set.
_CLOUDSDK_CONFIG_ENV_VAR = 'CLOUDSDK_CONFIG'
# The error message we show users when we can't find the Application
# Default Credentials.
ADC_HELP_MSG = (
'The Application Default Credentials are not available. They are '
'available if running in Google Compute Engine. Otherwise, the '
'environment variable ' +
GOOGLE_APPLICATION_CREDENTIALS +
' must be defined pointing to a file defining the credentials. See '
'https://developers.google.com/accounts/docs/'
'application-default-credentials for more information.')
_WELL_KNOWN_CREDENTIALS_FILE = 'application_default_credentials.json'
# The access token along with the seconds in which it expires.
AccessTokenInfo = collections.namedtuple(
'AccessTokenInfo', ['access_token', 'expires_in'])
DEFAULT_ENV_NAME = 'UNKNOWN'
# If set to True _get_environment avoid GCE check (_detect_gce_environment)
NO_GCE_CHECK = os.environ.setdefault('NO_GCE_CHECK', 'False')
_SERVER_SOFTWARE = 'SERVER_SOFTWARE'
_GCE_METADATA_HOST = '169.254.169.254'
_METADATA_FLAVOR_HEADER = 'Metadata-Flavor'
_DESIRED_METADATA_FLAVOR = 'Google'
# Expose utcnow() at module level to allow for
# easier testing (by replacing with a stub).
_UTCNOW = datetime.datetime.utcnow
class SETTINGS(object):
"""Settings namespace for globally defined values."""
env_name = None
class Error(Exception):
"""Base error for this module."""
class FlowExchangeError(Error):
"""Error trying to exchange an authorization grant for an access token."""
class AccessTokenRefreshError(Error):
"""Error trying to refresh an expired access token."""
class HttpAccessTokenRefreshError(AccessTokenRefreshError):
"""Error (with HTTP status) trying to refresh an expired access token."""
def __init__(self, *args, **kwargs):
super(HttpAccessTokenRefreshError, self).__init__(*args)
self.status = kwargs.get('status')
class TokenRevokeError(Error):
"""Error trying to revoke a token."""
class UnknownClientSecretsFlowError(Error):
"""The client secrets file called for an unknown type of OAuth 2.0 flow."""
class AccessTokenCredentialsError(Error):
"""Having only the access_token means no refresh is possible."""
class VerifyJwtTokenError(Error):
"""Could not retrieve certificates for validation."""
class NonAsciiHeaderError(Error):
"""Header names and values must be ASCII strings."""
class ApplicationDefaultCredentialsError(Error):
"""Error retrieving the Application Default Credentials."""
class OAuth2DeviceCodeError(Error):
"""Error trying to retrieve a device code."""
class CryptoUnavailableError(Error, NotImplementedError):
"""Raised when a crypto library is required, but none is available."""
def _abstract():
raise NotImplementedError('You need to override this function')
class MemoryCache(object):
"""httplib2 Cache implementation which only caches locally."""
def __init__(self):
self.cache = {}
def get(self, key):
return self.cache.get(key)
def set(self, key, value):
self.cache[key] = value
def delete(self, key):
self.cache.pop(key, None)
def _parse_expiry(expiry):
if expiry and isinstance(expiry, datetime.datetime):
return expiry.strftime(EXPIRY_FORMAT)
else:
return None
class Credentials(object):
"""Base class for all Credentials objects.
Subclasses must define an authorize() method that applies the credentials
to an HTTP transport.
Subclasses must also specify a classmethod named 'from_json' that takes a
JSON string as input and returns an instantiated Credentials object.
"""
NON_SERIALIZED_MEMBERS = frozenset(['store'])
def authorize(self, http):
"""Take an httplib2.Http instance (or equivalent) and authorizes it.
Authorizes it for the set of credentials, usually by replacing
http.request() with a method that adds in the appropriate headers and
then delegates to the original Http.request() method.
Args:
http: httplib2.Http, an http object to be used to make the refresh
request.
"""
_abstract()
def refresh(self, http):
"""Forces a refresh of the access_token.
Args:
http: httplib2.Http, an http object to be used to make the refresh
request.
"""
_abstract()
def revoke(self, http):
"""Revokes a refresh_token and makes the credentials void.
Args:
http: httplib2.Http, an http object to be used to make the revoke
request.
"""
_abstract()
def apply(self, headers):
"""Add the authorization to the headers.
Args:
headers: dict, the headers to add the Authorization header to.
"""
_abstract()
def _to_json(self, strip, to_serialize=None):
"""Utility function that creates JSON repr. of a Credentials object.
Args:
strip: array, An array of names of members to exclude from the
JSON.
to_serialize: dict, (Optional) The properties for this object
that will be serialized. This allows callers to modify
before serializing.
Returns:
string, a JSON representation of this instance, suitable to pass to
from_json().
"""
curr_type = self.__class__
if to_serialize is None:
to_serialize = copy.copy(self.__dict__)
for member in strip:
if member in to_serialize:
del to_serialize[member]
to_serialize['token_expiry'] = _parse_expiry(
to_serialize.get('token_expiry'))
# Add in information we will need later to reconstitute this instance.
to_serialize['_class'] = curr_type.__name__
to_serialize['_module'] = curr_type.__module__
for key, val in to_serialize.items():
if isinstance(val, bytes):
to_serialize[key] = val.decode('utf-8')
if isinstance(val, set):
to_serialize[key] = list(val)
return json.dumps(to_serialize)
def to_json(self):
"""Creating a JSON representation of an instance of Credentials.
Returns:
string, a JSON representation of this instance, suitable to pass to
from_json().
"""
return self._to_json(self.NON_SERIALIZED_MEMBERS)
@classmethod
def new_from_json(cls, json_data):
"""Utility class method to instantiate a Credentials subclass from JSON.
Expects the JSON string to have been produced by to_json().
Args:
json_data: string or bytes, JSON from to_json().
Returns:
An instance of the subclass of Credentials that was serialized with
to_json().
"""
json_data_as_unicode = _from_bytes(json_data)
data = json.loads(json_data_as_unicode)
# Find and call the right classmethod from_json() to restore
# the object.
module_name = data['_module']
try:
module_obj = __import__(module_name)
except ImportError:
# In case there's an object from the old package structure,
# update it
module_name = module_name.replace('.googleapiclient', '')
module_obj = __import__(module_name)
module_obj = __import__(module_name,
fromlist=module_name.split('.')[:-1])
kls = getattr(module_obj, data['_class'])
return kls.from_json(json_data_as_unicode)
@classmethod
def from_json(cls, unused_data):
"""Instantiate a Credentials object from a JSON description of it.
The JSON should have been produced by calling .to_json() on the object.
Args:
unused_data: dict, A deserialized JSON object.
Returns:
An instance of a Credentials subclass.
"""
return Credentials()
class Flow(object):
"""Base class for all Flow objects."""
pass
class Storage(object):
"""Base class for all Storage objects.
Store and retrieve a single credential. This class supports locking
such that multiple processes and threads can operate on a single
store.
"""
def __init__(self, lock=None):
"""Create a Storage instance.
Args:
lock: An optional threading.Lock-like object. Must implement at
least acquire() and release(). Does not need to be re-entrant.
"""
self._lock = lock
def acquire_lock(self):
"""Acquires any lock necessary to access this Storage.
This lock is not reentrant.
"""
if self._lock is not None:
self._lock.acquire()
def release_lock(self):
"""Release the Storage lock.
Trying to release a lock that isn't held will result in a
RuntimeError in the case of a threading.Lock or multiprocessing.Lock.
"""
if self._lock is not None:
self._lock.release()
def locked_get(self):
"""Retrieve credential.
The Storage lock must be held when this is called.
Returns:
oauth2client.client.Credentials
"""
_abstract()
def locked_put(self, credentials):
"""Write a credential.
The Storage lock must be held when this is called.
Args:
credentials: Credentials, the credentials to store.
"""
_abstract()
def locked_delete(self):
"""Delete a credential.
The Storage lock must be held when this is called.
"""
_abstract()
def get(self):
"""Retrieve credential.
The Storage lock must *not* be held when this is called.
Returns:
oauth2client.client.Credentials
"""
self.acquire_lock()
try:
return self.locked_get()
finally:
self.release_lock()
def put(self, credentials):
"""Write a credential.
The Storage lock must be held when this is called.
Args:
credentials: Credentials, the credentials to store.
"""
self.acquire_lock()
try:
self.locked_put(credentials)
finally:
self.release_lock()
def delete(self):
"""Delete credential.
Frees any resources associated with storing the credential.
The Storage lock must *not* be held when this is called.
Returns:
None
"""
self.acquire_lock()
try:
return self.locked_delete()
finally:
self.release_lock()
def clean_headers(headers):
"""Forces header keys and values to be strings, i.e not unicode.
The httplib module just concats the header keys and values in a way that
may make the message header a unicode string, which, if it then tries to
contatenate to a binary request body may result in a unicode decode error.
Args:
headers: dict, A dictionary of headers.
Returns:
The same dictionary but with all the keys converted to strings.
"""
clean = {}
try:
for k, v in six.iteritems(headers):
if not isinstance(k, six.binary_type):
k = str(k)
if not isinstance(v, six.binary_type):
v = str(v)
clean[_to_bytes(k)] = _to_bytes(v)
except UnicodeEncodeError:
raise NonAsciiHeaderError(k, ': ', v)
return clean
def _update_query_params(uri, params):
"""Updates a URI with new query parameters.
Args:
uri: string, A valid URI, with potential existing query parameters.
params: dict, A dictionary of query parameters.
Returns:
The same URI but with the new query parameters added.
"""
parts = urllib.parse.urlparse(uri)
query_params = dict(urllib.parse.parse_qsl(parts.query))
query_params.update(params)
new_parts = parts._replace(query=urllib.parse.urlencode(query_params))
return urllib.parse.urlunparse(new_parts)
class OAuth2Credentials(Credentials):
"""Credentials object for OAuth 2.0.
Credentials can be applied to an httplib2.Http object using the authorize()
method, which then adds the OAuth 2.0 access token to each request.
OAuth2Credentials objects may be safely pickled and unpickled.
"""
@util.positional(8)
def __init__(self, access_token, client_id, client_secret, refresh_token,
token_expiry, token_uri, user_agent, revoke_uri=None,
id_token=None, token_response=None, scopes=None,
token_info_uri=None):
"""Create an instance of OAuth2Credentials.
This constructor is not usually called by the user, instead
OAuth2Credentials objects are instantiated by the OAuth2WebServerFlow.
Args:
access_token: string, access token.
client_id: string, client identifier.
client_secret: string, client secret.
refresh_token: string, refresh token.
token_expiry: datetime, when the access_token expires.
token_uri: string, URI of token endpoint.
user_agent: string, The HTTP User-Agent to provide for this
application.
revoke_uri: string, URI for revoke endpoint. Defaults to None; a
token can't be revoked if this is None.
id_token: object, The identity of the resource owner.
token_response: dict, the decoded response to the token request.
None if a token hasn't been requested yet. Stored
because some providers (e.g. wordpress.com) include
extra fields that clients may want.
scopes: list, authorized scopes for these credentials.
token_info_uri: string, the URI for the token info endpoint. Defaults
to None; scopes can not be refreshed if this is None.
Notes:
store: callable, A callable that when passed a Credential
will store the credential back to where it came from.
This is needed to store the latest access_token if it
has expired and been refreshed.
"""
self.access_token = access_token
self.client_id = client_id
self.client_secret = client_secret
self.refresh_token = refresh_token
self.store = None
self.token_expiry = token_expiry
self.token_uri = token_uri
self.user_agent = user_agent
self.revoke_uri = revoke_uri
self.id_token = id_token
self.token_response = token_response
self.scopes = set(util.string_to_scopes(scopes or []))
self.token_info_uri = token_info_uri
# True if the credentials have been revoked or expired and can't be
# refreshed.
self.invalid = False
def authorize(self, http):
"""Authorize an httplib2.Http instance with these credentials.
The modified http.request method will add authentication headers to
each request and will refresh access_tokens when a 401 is received on a
request. In addition the http.request method has a credentials
property, http.request.credentials, which is the Credentials object
that authorized it.
Args:
http: An instance of ``httplib2.Http`` or something that acts
like it.
Returns:
A modified instance of http that was passed in.
Example::
h = httplib2.Http()
h = credentials.authorize(h)
You can't create a new OAuth subclass of httplib2.Authentication
because it never gets passed the absolute URI, which is needed for
signing. So instead we have to overload 'request' with a closure
that adds in the Authorization header and then calls the original
version of 'request()'.
"""
request_orig = http.request
# The closure that will replace 'httplib2.Http.request'.
def new_request(uri, method='GET', body=None, headers=None,
redirections=httplib2.DEFAULT_MAX_REDIRECTS,
connection_type=None):
if not self.access_token:
logger.info('Attempting refresh to obtain '
'initial access_token')
self._refresh(request_orig)
# Clone and modify the request headers to add the appropriate
# Authorization header.
if headers is None:
headers = {}
else:
headers = dict(headers)
self.apply(headers)
if self.user_agent is not None:
if 'user-agent' in headers:
headers['user-agent'] = (self.user_agent + ' ' +
headers['user-agent'])
else:
headers['user-agent'] = self.user_agent
body_stream_position = None
if all(getattr(body, stream_prop, None) for stream_prop in
('read', 'seek', 'tell')):
body_stream_position = body.tell()
resp, content = request_orig(uri, method, body,
clean_headers(headers),
redirections, connection_type)
# A stored token may expire between the time it is retrieved and
# the time the request is made, so we may need to try twice.
max_refresh_attempts = 2
for refresh_attempt in range(max_refresh_attempts):
if resp.status not in REFRESH_STATUS_CODES:
break
logger.info('Refreshing due to a %s (attempt %s/%s)',
resp.status, refresh_attempt + 1,
max_refresh_attempts)
self._refresh(request_orig)
self.apply(headers)
if body_stream_position is not None:
body.seek(body_stream_position)
resp, content = request_orig(uri, method, body,
clean_headers(headers),
redirections, connection_type)
return (resp, content)
# Replace the request method with our own closure.
http.request = new_request
# Set credentials as a property of the request method.
setattr(http.request, 'credentials', self)
return http
def refresh(self, http):
"""Forces a refresh of the access_token.
Args:
http: httplib2.Http, an http object to be used to make the refresh
request.
"""
self._refresh(http.request)
def revoke(self, http):
"""Revokes a refresh_token and makes the credentials void.
Args:
http: httplib2.Http, an http object to be used to make the revoke
request.
"""
self._revoke(http.request)
def apply(self, headers):
"""Add the authorization to the headers.
Args:
headers: dict, the headers to add the Authorization header to.
"""
headers['Authorization'] = 'Bearer ' + self.access_token
def has_scopes(self, scopes):
"""Verify that the credentials are authorized for the given scopes.
Returns True if the credentials authorized scopes contain all of the
scopes given.
Args:
scopes: list or string, the scopes to check.
Notes:
There are cases where the credentials are unaware of which scopes
are authorized. Notably, credentials obtained and stored before
this code was added will not have scopes, AccessTokenCredentials do
not have scopes. In both cases, you can use refresh_scopes() to
obtain the canonical set of scopes.
"""
scopes = util.string_to_scopes(scopes)
return set(scopes).issubset(self.scopes)
def retrieve_scopes(self, http):
"""Retrieves the canonical list of scopes for this access token.
Gets the scopes from the OAuth2 provider.
Args:
http: httplib2.Http, an http object to be used to make the refresh
request.
Returns:
A set of strings containing the canonical list of scopes.
"""
self._retrieve_scopes(http.request)
return self.scopes
@classmethod
def from_json(cls, json_data):
"""Instantiate a Credentials object from a JSON description of it.
The JSON should have been produced by calling .to_json() on the object.
Args:
json_data: string or bytes, JSON to deserialize.
Returns:
An instance of a Credentials subclass.
"""
data = json.loads(_from_bytes(json_data))
if (data.get('token_expiry') and
not isinstance(data['token_expiry'], datetime.datetime)):
try:
data['token_expiry'] = datetime.datetime.strptime(
data['token_expiry'], EXPIRY_FORMAT)
except ValueError:
data['token_expiry'] = None
retval = cls(
data['access_token'],
data['client_id'],
data['client_secret'],
data['refresh_token'],
data['token_expiry'],
data['token_uri'],
data['user_agent'],
revoke_uri=data.get('revoke_uri', None),
id_token=data.get('id_token', None),
token_response=data.get('token_response', None),
scopes=data.get('scopes', None),
token_info_uri=data.get('token_info_uri', None))
retval.invalid = data['invalid']
return retval
@property
def access_token_expired(self):
"""True if the credential is expired or invalid.
If the token_expiry isn't set, we assume the token doesn't expire.
"""
if self.invalid:
return True
if not self.token_expiry:
return False
now = _UTCNOW()
if now >= self.token_expiry:
logger.info('access_token is expired. Now: %s, token_expiry: %s',
now, self.token_expiry)
return True
return False
def get_access_token(self, http=None):
"""Return the access token and its expiration information.
If the token does not exist, get one.
If the token expired, refresh it.
"""
if not self.access_token or self.access_token_expired:
if not http:
http = httplib2.Http()
self.refresh(http)
return AccessTokenInfo(access_token=self.access_token,
expires_in=self._expires_in())
def set_store(self, store):
"""Set the Storage for the credential.
Args:
store: Storage, an implementation of Storage object.
This is needed to store the latest access_token if it
has expired and been refreshed. This implementation uses
locking to check for updates before updating the
access_token.
"""
self.store = store
def _expires_in(self):
"""Return the number of seconds until this token expires.
If token_expiry is in the past, this method will return 0, meaning the
token has already expired.
If token_expiry is None, this method will return None. Note that
returning 0 in such a case would not be fair: the token may still be
valid; we just don't know anything about it.
"""
if self.token_expiry:
now = _UTCNOW()
if self.token_expiry > now:
time_delta = self.token_expiry - now
# TODO(orestica): return time_delta.total_seconds()
# once dropping support for Python 2.6
return time_delta.days * 86400 + time_delta.seconds
else:
return 0
def _updateFromCredential(self, other):
"""Update this Credential from another instance."""
self.__dict__.update(other.__getstate__())
def __getstate__(self):
"""Trim the state down to something that can be pickled."""
d = copy.copy(self.__dict__)
del d['store']
return d
def __setstate__(self, state):
"""Reconstitute the state of the object from being pickled."""
self.__dict__.update(state)
self.store = None
def _generate_refresh_request_body(self):
"""Generate the body that will be used in the refresh request."""
body = urllib.parse.urlencode({
'grant_type': 'refresh_token',
'client_id': self.client_id,
'client_secret': self.client_secret,
'refresh_token': self.refresh_token,
})
return body
def _generate_refresh_request_headers(self):
"""Generate the headers that will be used in the refresh request."""
headers = {
'content-type': 'application/x-www-form-urlencoded',
}
if self.user_agent is not None:
headers['user-agent'] = self.user_agent
return headers
def _refresh(self, http_request):
"""Refreshes the access_token.
This method first checks by reading the Storage object if available.
If a refresh is still needed, it holds the Storage lock until the
refresh is completed.
Args:
http_request: callable, a callable that matches the method
signature of httplib2.Http.request, used to make the
refresh request.
Raises:
HttpAccessTokenRefreshError: When the refresh fails.
"""
if not self.store:
self._do_refresh_request(http_request)
else:
self.store.acquire_lock()
try:
new_cred = self.store.locked_get()
if (new_cred and not new_cred.invalid and
new_cred.access_token != self.access_token and
not new_cred.access_token_expired):
logger.info('Updated access_token read from Storage')
self._updateFromCredential(new_cred)
else:
self._do_refresh_request(http_request)
finally:
self.store.release_lock()
def _do_refresh_request(self, http_request):
"""Refresh the access_token using the refresh_token.
Args:
http_request: callable, a callable that matches the method
signature of httplib2.Http.request, used to make the
refresh request.
Raises:
HttpAccessTokenRefreshError: When the refresh fails.
"""
body = self._generate_refresh_request_body()
headers = self._generate_refresh_request_headers()
logger.info('Refreshing access_token')
resp, content = http_request(
self.token_uri, method='POST', body=body, headers=headers)
content = _from_bytes(content)
if resp.status == http_client.OK:
d = json.loads(content)
self.token_response = d
self.access_token = d['access_token']
self.refresh_token = d.get('refresh_token', self.refresh_token)
if 'expires_in' in d:
delta = datetime.timedelta(seconds=int(d['expires_in']))
self.token_expiry = delta + _UTCNOW()
else:
self.token_expiry = None
if 'id_token' in d:
self.id_token = _extract_id_token(d['id_token'])
else:
self.id_token = None
# On temporary refresh errors, the user does not actually have to
# re-authorize, so we unflag here.
self.invalid = False
if self.store:
self.store.locked_put(self)
else:
# An {'error':...} response body means the token is expired or
# revoked, so we flag the credentials as such.
logger.info('Failed to retrieve access token: %s', content)
error_msg = 'Invalid response %s.' % resp['status']
try:
d = json.loads(content)
if 'error' in d:
error_msg = d['error']
if 'error_description' in d:
error_msg += ': ' + d['error_description']
self.invalid = True
if self.store:
self.store.locked_put(self)
except (TypeError, ValueError):
pass
raise HttpAccessTokenRefreshError(error_msg, status=resp.status)
def _revoke(self, http_request):
"""Revokes this credential and deletes the stored copy (if it exists).
Args:
http_request: callable, a callable that matches the method
signature of httplib2.Http.request, used to make the
revoke request.
"""
self._do_revoke(http_request, self.refresh_token or self.access_token)
def _do_revoke(self, http_request, token):
"""Revokes this credential and deletes the stored copy (if it exists).
Args:
http_request: callable, a callable that matches the method
signature of httplib2.Http.request, used to make the
refresh request.
token: A string used as the token to be revoked. Can be either an
access_token or refresh_token.
Raises:
TokenRevokeError: If the revoke request does not return with a
200 OK.
"""
logger.info('Revoking token')
query_params = {'token': token}
token_revoke_uri = _update_query_params(self.revoke_uri, query_params)
resp, content = http_request(token_revoke_uri)
if resp.status == http_client.OK:
self.invalid = True
else:
error_msg = 'Invalid response %s.' % resp.status
try:
d = json.loads(_from_bytes(content))
if 'error' in d:
error_msg = d['error']
except (TypeError, ValueError):
pass
raise TokenRevokeError(error_msg)
if self.store:
self.store.delete()
def _retrieve_scopes(self, http_request):
"""Retrieves the list of authorized scopes from the OAuth2 provider.
Args:
http_request: callable, a callable that matches the method
signature of httplib2.Http.request, used to make the
revoke request.
"""
self._do_retrieve_scopes(http_request, self.access_token)
def _do_retrieve_scopes(self, http_request, token):
"""Retrieves the list of authorized scopes from the OAuth2 provider.
Args:
http_request: callable, a callable that matches the method
signature of httplib2.Http.request, used to make the
refresh request.
token: A string used as the token to identify the credentials to
the provider.
Raises:
Error: When refresh fails, indicating the the access token is
invalid.