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##############################################################################
#
# Copyright (c) 2001 Zope Corporation and Contributors. All Rights
# Reserved.
#
# This software is subject to the provisions of the Zope Public License,
# Version 2.1 (ZPL). A copy of the ZPL should accompany this
# distribution.
# THIS SOFTWARE IS PROVIDED "AS IS" AND ANY AND ALL EXPRESS OR IMPLIED
# WARRANTIES ARE DISCLAIMED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
# WARRANTIES OF TITLE, MERCHANTABILITY, AGAINST INFRINGEMENT, AND FITNESS
# FOR A PARTICULAR PURPOSE.
#
##############################################################################
""" Classes: PropertiedUser
$Id: PropertiedUser.py 67083 2006-04-18 21:56:22Z jens $
"""
from Acquisition import aq_inner, aq_parent
from AccessControl.User import BasicUser
from AccessControl.PermissionRole import _what_not_even_god_should_do
from interfaces.authservice import IPropertiedUser
from UserPropertySheet import UserPropertySheet
from utils import classImplements
class PropertiedUser( BasicUser ):
""" User objects which manage propertysheets, obtained from decorators.
"""
def __init__( self, id, login=None ):
self._id = id
if login is None:
login = id
self._login = login
self._propertysheets = {} # *Not* persistent!
self._groups = {}
self._roles = {}
#
# BasicUser's public interface
#
def getId( self ):
""" -> user ID
"""
return self._id
def getUserName( self ):
""" -> login name
"""
return self._login
def getRoles( self ):
""" -> [ role ]
o Include only "global" roles.
"""
return self._roles.keys()
def getGroups(self):
""" -> [group]
o Return the groups the user is in.
"""
return self._groups.keys()
def getDomains( self ):
""" -> [ domain ]
o The list represents the only domains from which the user is
allowed to access the system.
"""
return ()
def getRolesInContext( self, object ):
""" Return the list of roles assigned to the user.
o Include local roles assigned in context of the passed-in object.
o Include *both* local roles assigned directly to us *and* those
assigned to our groups.
o Ripped off from AccessControl.User.BasicUser, which provides
no other extension mechanism. :(
"""
user_id = self.getId()
# [ x.getId() for x in self.getGroups() ]
group_ids = self.getGroups()
principal_ids = list( group_ids )
principal_ids.insert( 0, user_id )
local ={}
object = aq_inner( object )
while 1:
local_roles = getattr( object, '__ac_local_roles__', None )
if local_roles:
if callable( local_roles ):
local_roles = local_roles()
dict = local_roles or {}
for principal_id in principal_ids:
for role in dict.get( principal_id, [] ):
local[ role ] = 1
inner = aq_inner( object )
parent = aq_parent( inner )
if parent is not None:
object = parent
continue
new = getattr( object, 'im_self', None )
if new is not None:
object = aq_inner( new )
continue
break
return list( self.getRoles() ) + local.keys()
def allowed( self, object, object_roles=None ):
""" Check whether the user has access to object.
o The user must have one of the roles in object_roles to allow access.
o Include *both* local roles assigned directly to us *and* those
assigned to our groups.
o Ripped off from AccessControl.User.BasicUser, which provides
no other extension mechanism. :(
"""
if object_roles is _what_not_even_god_should_do:
return 0
# Short-circuit the common case of anonymous access.
if object_roles is None or 'Anonymous' in object_roles:
return 1
# Provide short-cut access if object is protected by 'Authenticated'
# role and user is not nobody
if 'Authenticated' in object_roles and (
self.getUserName() != 'Anonymous User'):
return 1
# Check for ancient role data up front, convert if found.
# This should almost never happen, and should probably be
# deprecated at some point.
if 'Shared' in object_roles:
object_roles = self._shared_roles(object)
if object_roles is None or 'Anonymous' in object_roles:
return 1
# Check for a role match with the normal roles given to
# the user, then with local roles only if necessary. We
# want to avoid as much overhead as possible.
user_roles = self.getRoles()
for role in object_roles:
if role in user_roles:
if self._check_context(object):
return 1
return None
# Still have not found a match, so check local roles. We do
# this manually rather than call getRolesInContext so that
# we can incur only the overhead required to find a match.
inner_obj = aq_inner( object )
user_id = self.getId()
# [ x.getId() for x in self.getGroups() ]
group_ids = self.getGroups()
principal_ids = list( group_ids )
principal_ids.insert( 0, user_id )
while 1:
local_roles = getattr( inner_obj, '__ac_local_roles__', None )
if local_roles:
if callable( local_roles ):
local_roles = local_roles()
dict = local_roles or {}
for principal_id in principal_ids:
local_roles = dict.get( principal_id, [] )
for role in object_roles:
if role in local_roles:
if self._check_context( object ):
return 1
return 0
inner = aq_inner( inner_obj )
parent = aq_parent( inner )
if parent is not None:
inner_obj = parent
continue
new = getattr( inner_obj, 'im_self', None )
if new is not None:
inner_obj = aq_inner( new )
continue
break
return None
#
# Interfaces to allow user folder plugins to annotate the user.
#
def _addGroups( self, groups=() ):
""" Extend our set of groups.
o Don't complain about duplicates.
"""
for group in groups:
self._groups[ group ] = 1
def _addRoles( self, roles=() ):
""" Extend our set of roles.
o Don't complain about duplicates.
"""
for role in roles:
self._roles[ role ] = 1
#
# Propertysheet management
#
def listPropertysheets( self ):
""" -> [ propertysheet_id ]
"""
return self._propertysheets.keys()
def getPropertysheet( self, id ):
""" id -> sheet
o Raise KeyError if no such seet exists.
"""
return self._propertysheets[ id ]
__getitem__ = getPropertysheet
def addPropertysheet( self, id, data ):
""" Add a new propertysheet.
o Raise KeyError if a sheet of the given ID already exists.
"""
if self._propertysheets.get( id ) is not None:
raise KeyError, "Duplicate property sheet: %s" % id
self._propertysheets[ id ] = UserPropertySheet( id, **data )
classImplements( PropertiedUser,
IPropertiedUser )
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