narrow_widen_acl: enforce narrowacl in narrow_widen (SEC)
Reviewer note: this was sent by the author as a simple bugfix, but can be
considered a security patch, since it allows users to access things outside
of the ACL, hence the (SEC) prefix.
However, this affects the `narrow` extention which is still marked as
experimental and has relatively few users aside from large companies with
their own security layers on top from what we can gather.
We feel (Alphare: or at least, I feel) like pinging the packaging list is
enough in this case.
# util.py - Utilities for declaring interfaces.
#
# Copyright 2018 Gregory Szorc <gregory.szorc@gmail.com>
#
# This software may be used and distributed according to the terms of the
# GNU General Public License version 2 or any later version.
# zope.interface imposes a run-time cost due to module import overhead and
# bookkeeping for declaring interfaces. So, we use stubs for various
# zope.interface primitives unless instructed otherwise.
from __future__ import absolute_import
from .. import encoding
if encoding.environ.get(b'HGREALINTERFACES'):
from ..thirdparty.zope import interface as zi
Attribute = zi.Attribute
Interface = zi.Interface
implementer = zi.implementer
else:
class Attribute(object):
def __init__(self, __name__, __doc__=b''):
pass
class Interface(object):
def __init__(
self, name, bases=(), attrs=None, __doc__=None, __module__=None
):
pass
def implementer(*ifaces):
def wrapper(cls):
return cls
return wrapper