# stub zope2-aware decsec

def initialize(global_conf,middleware):
    # set up DB
    pass

def before_check(environ):
    # traverse
    pass

def request_principals(environ):
    # we use zope roles as decsec principals.  we need some way of
    # quickly determining which roles a user has in a particular
    # context.
    pass

def request_acl(environ):
    # role-permission maps are ACEs where the action is always allow.
    pass

def request_permission(environ):
    # we need some way of quickly determining what permission protects
    # the result of a traversal.  __ac_permissions__ is the likely
    # suspect.
    pass

def after_check(environ):
    # do nothing.
    pass