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# 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
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# See the License for the specific language governing permissions and
# limitations under the License.
"""Basic Google Account and User (Model) query functions.
from google.appengine.api import users
def getCurrentAccount(normalize=True):
"""Returns an optionally normalized version of the current account.
account = users.get_current_user()
return normalizeAccount(account) if (account and normalize) else account
def getCurrentUserId():
"""Returns a unique id of the current user.
user = users.get_current_user()
return user.user_id() if user else None
def normalizeAccount(account):
"""Returns a normalized version of the specified account.
return account
def denormalizeAccount(account):
"""Returns a denormalized version of the specified account.
if'@') != -1:
return account
domain = account.auth_domain()
denormalized = ''.join([, '@', domain])
return users.User(email=denormalized)
def isDeveloper(account=None):
"""Returns True if a Google Account is a Developer with special privileges.
Since it only works on the current logged-in user, if account matches the
current logged-in Google Account, the App Engine Users API function
user.is_current_user_admin() is checked. If that returns False, or
account is not the currently logged-in user, False is returned.
This solves the "chicken-and-egg" problem of no User entity having its
is_developer property set, but no one being able to set it.
account: a Google Account (users.User) object;
if not supplied, the current logged-in user is checked
# Get the currently logged in user
current = getCurrentAccount()
if current and (not account):
# default to the current user
account = current
if not account:
# no Google Account was supplied or is logged in, so an unspecified
# User is definitely *not* a Developer
return False
if (account == current) and users.is_current_user_admin():
# the current account should be checked, and it is in the
# Administration->Developers list in the App Engine console
return True
# account is not current user, or current user is not an admin
return False