/usr/share/pyshared/zope/app/localpermission/permission.py is in python-zope.app.localpermission 3.7.2-0ubuntu6.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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#
# Copyright (c) 2009 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.
#
##############################################################################
"""Persistent Local Permissions
$Id: permission.py 97714 2009-03-09 18:52:31Z nadako $
"""
__docformat__ = 'restructuredtext'
from persistent import Persistent
from zope.component import adapter
from zope.component.interfaces import IRegistered, IUnregistered
from zope.i18nmessageid import MessageFactory
from zope.interface import implements
from zope.location import Location
from zope.security.interfaces import IPermission
_ = MessageFactory('zope')
NULL_ID = _(u'<permission not activated>')
class LocalPermission(Persistent, Location):
implements(IPermission)
def __init__(self, title=u'', description=u''):
self.id = NULL_ID
self.title = title
self.description = description
@adapter(IPermission, IRegistered)
def setIdOnActivation(permission, event):
"""Set the permission id upon registration activation.
Let's see how this notifier can be used. First we need to create an event
using the permission instance and a registration stub:
>>> class Registration:
... def __init__(self, obj, name):
... self.component = obj
... self.name = name
>>> perm1 = LocalPermission('Permission 1', 'A first permission')
>>> perm1.id
u'<permission not activated>'
>>> import zope.component.interfaces
>>> event = zope.component.interfaces.Registered(
... Registration(perm1, 'perm1'))
Now we pass the event into this function, and the id of the permission
should be set to 'perm1'.
>>> setIdOnActivation(perm1, event)
>>> perm1.id
'perm1'
"""
permission.id = event.object.name
@adapter(IPermission, IUnregistered)
def unsetIdOnDeactivation(permission, event):
"""Unset the permission id up registration deactivation.
Let's see how this notifier can be used. First we need to create an event
using the permission instance and a registration stub:
>>> class Registration:
... def __init__(self, obj, name):
... self.component = obj
... self.name = name
>>> perm1 = LocalPermission('Permission 1', 'A first permission')
>>> perm1.id = 'perm1'
>>> import zope.component.interfaces
>>> event = zope.component.interfaces.Unregistered(
... Registration(perm1, 'perm1'))
Now we pass the event into this function, and the id of the permission
should be set to NULL_ID.
>>> unsetIdOnDeactivation(perm1, event)
>>> perm1.id
u'<permission not activated>'
"""
permission.id = NULL_ID
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