You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
135 lines
3.7 KiB
Python
135 lines
3.7 KiB
Python
# Copyright (C) 2010 Google Inc.
|
|
#
|
|
# 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.
|
|
|
|
"""OAuth 2.0 utilities for Django.
|
|
|
|
Utilities for using OAuth 2.0 in conjunction with
|
|
the Django datastore.
|
|
"""
|
|
|
|
__author__ = 'jcgregorio@google.com (Joe Gregorio)'
|
|
|
|
import oauth2client
|
|
import base64
|
|
import pickle
|
|
|
|
from django.db import models
|
|
from oauth2client.client import Storage as BaseStorage
|
|
|
|
class CredentialsField(models.Field):
|
|
|
|
__metaclass__ = models.SubfieldBase
|
|
|
|
def __init__(self, *args, **kwargs):
|
|
if 'null' not in kwargs:
|
|
kwargs['null'] = True
|
|
super(CredentialsField, self).__init__(*args, **kwargs)
|
|
|
|
def get_internal_type(self):
|
|
return "TextField"
|
|
|
|
def to_python(self, value):
|
|
if value is None:
|
|
return None
|
|
if isinstance(value, oauth2client.client.Credentials):
|
|
return value
|
|
return pickle.loads(base64.b64decode(value))
|
|
|
|
def get_db_prep_value(self, value, connection, prepared=False):
|
|
if value is None:
|
|
return None
|
|
return base64.b64encode(pickle.dumps(value))
|
|
|
|
|
|
class FlowField(models.Field):
|
|
|
|
__metaclass__ = models.SubfieldBase
|
|
|
|
def __init__(self, *args, **kwargs):
|
|
if 'null' not in kwargs:
|
|
kwargs['null'] = True
|
|
super(FlowField, self).__init__(*args, **kwargs)
|
|
|
|
def get_internal_type(self):
|
|
return "TextField"
|
|
|
|
def to_python(self, value):
|
|
if value is None:
|
|
return None
|
|
if isinstance(value, oauth2client.client.Flow):
|
|
return value
|
|
return pickle.loads(base64.b64decode(value))
|
|
|
|
def get_db_prep_value(self, value, connection, prepared=False):
|
|
if value is None:
|
|
return None
|
|
return base64.b64encode(pickle.dumps(value))
|
|
|
|
|
|
class Storage(BaseStorage):
|
|
"""Store and retrieve a single credential to and from
|
|
the datastore.
|
|
|
|
This Storage helper presumes the Credentials
|
|
have been stored as a CredenialsField
|
|
on a db model class.
|
|
"""
|
|
|
|
def __init__(self, model_class, key_name, key_value, property_name):
|
|
"""Constructor for Storage.
|
|
|
|
Args:
|
|
model: db.Model, model class
|
|
key_name: string, key name for the entity that has the credentials
|
|
key_value: string, key value for the entity that has the credentials
|
|
property_name: string, name of the property that is an CredentialsProperty
|
|
"""
|
|
self.model_class = model_class
|
|
self.key_name = key_name
|
|
self.key_value = key_value
|
|
self.property_name = property_name
|
|
|
|
def locked_get(self):
|
|
"""Retrieve Credential from datastore.
|
|
|
|
Returns:
|
|
oauth2client.Credentials
|
|
"""
|
|
credential = None
|
|
|
|
query = {self.key_name: self.key_value}
|
|
entities = self.model_class.objects.filter(**query)
|
|
if len(entities) > 0:
|
|
credential = getattr(entities[0], self.property_name)
|
|
if credential and hasattr(credential, 'set_store'):
|
|
credential.set_store(self)
|
|
return credential
|
|
|
|
def locked_put(self, credentials):
|
|
"""Write a Credentials to the datastore.
|
|
|
|
Args:
|
|
credentials: Credentials, the credentials to store.
|
|
"""
|
|
args = {self.key_name: self.key_value}
|
|
entity = self.model_class(**args)
|
|
setattr(entity, self.property_name, credentials)
|
|
entity.save()
|
|
|
|
def locked_delete(self):
|
|
"""Delete Credentials from the datastore."""
|
|
|
|
query = {self.key_name: self.key_value}
|
|
entities = self.model_class.objects.filter(**query).delete()
|