| #!/usr/bin/env python2.5 |
| # |
| # Copyright 2008 the Melange authors. |
| # |
| # 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. |
| |
| """Site (Model) query functions. |
| """ |
| |
| |
| from google.appengine.api import memcache |
| |
| from soc.models.site import Site |
| from soc.logic.helper import xsrfutil |
| |
| |
| def singleton(): |
| """Return singleton Site settings entity, since there is always only one. |
| """ |
| return Site.get_or_insert('site', link_id='site') |
| |
| |
| def xsrfSecretKey(settings): |
| """Return the secret key for use by the XSRF middleware. |
| |
| If the Site entity does not have a secret key, this method will also create |
| one and persist it. |
| |
| Args: |
| settings: the singleton Site entity |
| |
| Returns: |
| a secret key. |
| """ |
| if not settings.xsrf_secret_key: |
| key = xsrfutil.newXsrfSecretKey() |
| if not memcache.add("new_xsrf_secret_key", key): |
| key = memcache.get("new_xsrf_secret_key") |
| settings.xsrf_secret_key = key |
| settings.put() |
| return settings.xsrf_secret_key |