thirdparty/google_appengine/google/appengine/api/users.py
author Pawel Solyga <Pawel.Solyga@gmail.com>
Sun, 06 Sep 2009 23:31:53 +0200
changeset 2864 2e0b0af889be
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child 3031 7678f72140e6
permissions -rwxr-xr-x
Update Google App Engine from 1.2.3 to 1.2.5 in thirdparty folder.
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#!/usr/bin/env python
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#
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# Copyright 2007 Google Inc.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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#     http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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#
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"""Python datastore class User to be used as a datastore data type.
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Classes defined here:
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  User: object representing a user.
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  Error: base exception type
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  UserNotFoundError: UserService exception
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  RedirectTooLongError: UserService exception
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  NotAllowedError: UserService exception
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"""
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import os
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from google.appengine.api import apiproxy_stub_map
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from google.appengine.api import user_service_pb
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from google.appengine.runtime import apiproxy_errors
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class Error(Exception):
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  """Base User error type."""
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class UserNotFoundError(Error):
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  """Raised by User.__init__() when there's no email argument and no user is
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  logged in."""
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class RedirectTooLongError(Error):
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  """Raised by UserService calls if the generated redirect URL was too long.
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  """
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class NotAllowedError(Error):
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  """Raised by UserService calls if the requested redirect URL is not allowed.
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  """
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class User(object):
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  """A user.
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  We provide the email address, nickname, auth domain, and id for a user.
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  A nickname is a human-readable string which uniquely identifies a Google
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  user, akin to a username. It will be an email address for some users, but
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  not all.
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  """
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  __user_id = None
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  def __init__(self, email=None, _auth_domain=None, _user_id=None):
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    """Constructor.
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    Args:
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      email: An optional string of the user's email address. It defaults to
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          the current user's email address.
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    Raises:
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      UserNotFoundError: Raised if the user is not logged in and the email
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          argument is empty.
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    """
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    if _auth_domain is None:
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      _auth_domain = os.environ.get('AUTH_DOMAIN')
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    else:
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      assert email is not None
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    assert _auth_domain
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    if email is None:
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      assert 'USER_EMAIL' in os.environ
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      email = os.environ['USER_EMAIL']
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      if _user_id is None and 'USER_ID' in os.environ:
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        _user_id = os.environ['USER_ID']
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    if not email:
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      raise UserNotFoundError
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    self.__email = email
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    self.__auth_domain = _auth_domain
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    self.__user_id = _user_id or None
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  def nickname(self):
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    """Return this user's nickname.
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    The nickname will be a unique, human readable identifier for this user
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    with respect to this application. It will be an email address for some
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    users, but not all.
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    """
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    if (self.__email and self.__auth_domain and
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        self.__email.endswith('@' + self.__auth_domain)):
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      suffix_len = len(self.__auth_domain) + 1
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      return self.__email[:-suffix_len]
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    else:
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      return self.__email
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  def email(self):
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    """Return this user's email address."""
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    return self.__email
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  def user_id(self):
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    """Return either a permanent unique identifying string or None.
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    If the email address was set explicity, this will return None.
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    """
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    return self.__user_id
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109
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  def auth_domain(self):
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    """Return this user's auth domain."""
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    return self.__auth_domain
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  def __unicode__(self):
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    return unicode(self.nickname())
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  def __str__(self):
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    return str(self.nickname())
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  def __repr__(self):
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    if self.__user_id:
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      return "users.User(email='%s',_user_id='%s')" % (self.email(),
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                                                       self.user_id())
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    else:
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      return "users.User(email='%s')" % self.email()
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  def __hash__(self):
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    return hash((self.__email, self.__auth_domain))
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  def __cmp__(self, other):
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    if not isinstance(other, User):
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      return NotImplemented
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    return cmp((self.__email, self.__auth_domain),
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               (other.__email, other.__auth_domain))
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def create_login_url(dest_url):
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  """Computes the login URL for this request and specified destination URL.
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  Args:
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    dest_url: String that is the desired final destination URL for the user
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              once login is complete. If 'dest_url' does not have a host
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              specified, we will use the host from the current request.
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  Returns:
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    string
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  """
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  req = user_service_pb.CreateLoginURLRequest()
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  resp = user_service_pb.CreateLoginURLResponse()
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  req.set_destination_url(dest_url)
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  try:
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    apiproxy_stub_map.MakeSyncCall('user', 'CreateLoginURL', req, resp)
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  except apiproxy_errors.ApplicationError, e:
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    if (e.application_error ==
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        user_service_pb.UserServiceError.REDIRECT_URL_TOO_LONG):
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      raise RedirectTooLongError
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    elif (e.application_error ==
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          user_service_pb.UserServiceError.NOT_ALLOWED):
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      raise NotAllowedError
109
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    else:
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      raise e
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  return resp.login_url()
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CreateLoginURL = create_login_url
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def create_logout_url(dest_url):
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  """Computes the logout URL for this request and specified destination URL.
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  Args:
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    dest_url: String that is the desired final destination URL for the user
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              once logout is complete. If 'dest_url' does not have a host
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              specified, we will use the host from the current request.
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  Returns:
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    string
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  """
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  req = user_service_pb.CreateLogoutURLRequest()
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  resp = user_service_pb.CreateLogoutURLResponse()
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  req.set_destination_url(dest_url)
109
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  try:
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    apiproxy_stub_map.MakeSyncCall('user', 'CreateLogoutURL', req, resp)
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  except apiproxy_errors.ApplicationError, e:
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   201
    if (e.application_error ==
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        user_service_pb.UserServiceError.REDIRECT_URL_TOO_LONG):
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      raise RedirectTooLongError
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    else:
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      raise e
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   206
  return resp.logout_url()
109
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   207
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CreateLogoutURL = create_logout_url
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   209
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   211
def get_current_user():
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   212
  try:
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   213
    return User()
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   214
  except UserNotFoundError:
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    return None
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GetCurrentUser = get_current_user
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   218
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   219
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def is_current_user_admin():
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   221
  """Return true if the user making this request is an admin for this
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   222
  application, false otherwise.
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   223
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   224
  We specifically make this a separate function, and not a member function of
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   225
  the User class, because admin status is not persisted in the datastore. It
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   226
  only exists for the user making this request right now.
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   227
  """
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   228
  return (os.environ.get('USER_IS_ADMIN', '0')) == '1'
109
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   229
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IsCurrentUserAdmin = is_current_user_admin