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R3600/modules/webaccess/lib/external_authentication.py
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external_authentication.py
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# -*- coding: utf-8 -*-
##
## This file is part of Invenio.
## Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 CERN.
##
## Invenio is free software; you can redistribute it and/or
## modify it under the terms of the GNU General Public License as
## published by the Free Software Foundation; either version 2 of the
## License, or (at your option) any later version.
##
## Invenio is distributed in the hope that it will be useful, but
## WITHOUT ANY WARRANTY; without even the implied warranty of
## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
## General Public License for more details.
##
## You should have received a copy of the GNU General Public License
## along with Invenio; if not, write to the Free Software Foundation, Inc.,
## 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
"""External user authentication for Invenio."""
__revision__ = \
"$Id$"
class InvenioWebAccessExternalAuthError(Exception):
"""Exception to signaling general external trouble."""
pass
class ExternalAuth:
"""External authentication template example."""
def __init__(self, enforce_external_nicknames=False):
"""Initialize stuff here"""
self.name = None
# Set the following variable to True in order to import the externally
# provided nickname into Invenio during the first login of a user
# through this external authentication system.
# If the nickname is already taken into Invenio, then it won't be
# considered.
self.enforce_external_nicknames = enforce_external_nicknames
pass
def auth_user(self, username, password, req=None):
"""Authenticate user-supplied USERNAME and PASSWORD. Return
(None, None) if authentication failed, or the (email, ext_id), where
email is the email address of the person and ext_id is the external
identifier, if the authentication was successful. In order to do
this you may perhaps have to keep a translation table between
usernames and email addresses.
Raise InvenioWebAccessExternalAuthError in case of external troubles.
"""
raise NotImplementedError()
#return None, None
def user_exists(self, email, req=None):
"""Check the external authentication system for existance of email.
@return: True if the user exists, False otherwise
"""
raise NotImplementedError()
def fetch_user_groups_membership(self, username, password=None, req=None):
"""Given a username and a password, returns a dictionary of groups
and their description to which the user is subscribed.
Raise InvenioWebAccessExternalAuthError in case of troubles.
"""
raise NotImplementedError()
#return {}
def fetch_user_nickname(self, username, password=None, req=None):
"""Given a username and a password, returns the right nickname belonging
to that user (username could be an email).
"""
raise NotImplementedError()
#return Nickname
def fetch_user_preferences(self, username, password=None, req=None):
"""Given a username and a password, returns a dictionary of keys and
values, corresponding to external infos and settings.
userprefs = {"telephone": "2392489",
"address": "10th Downing Street"}
(WEBUSER WILL erase all prefs that starts by EXTERNAL_ and will
store: "EXTERNAL_telephone"; all internal preferences can use whatever
name but starting with EXTERNAL). If a pref begins with HIDDEN_ it will
be ignored.
"""
raise NotImplementedError()
#return {}
def fetch_all_users_groups_membership(self, req=None):
"""Fetch all the groups with a description, and users who belong to
each groups.
@return: {'mygroup': ('description', ['email1', 'email2', ...]), ...}
"""
raise NotImplementedError()
def robot_login_method_p():
"""Return True if this method is dedicated to robots and should
not therefore be available as a choice to regular users upon login.
"""
return False
robot_login_method_p = staticmethod(robot_login_method_p)
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