[PEAK] peak.security

[darryl]

Given all the content in your very detailed and expressive message i 
came up with the following:

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# peak imports
from peak.api import *

class Owner(security.Permission):
    pass


class Building(object):

    security.allow(
        burnBuilding = Owner
        )

    def burnBuilding(self):
        print "burn baby burn!"

class BuildingRules(security.RuleSet):

    rules = Items(
        checkCanBurn = [Owner.of(Building)]
        )

    def checkCanBurn(self, attempt):
        return attempt.user is attempt.subject.owner

BuildingRules.declareRulesFor(security.IPermissionChecker)

class MyBuildingInteraction(security.Interaction):
    user = None
    permissionProtocol = security.IPermissionChecker

----------------------------------------------------------------------------------------------
 From the handy python prompt:

 >>> from security_test import *
 >>> myHouse=Building()
 >>> Maniac = Owner()
 >>> myHouse.owner = Maniac
 >>> theInteraction=MyBuildingInteraction(user=Maniac)
 >>>allowed = theInteraction.allows(myHouse,"burnBuilding")
 >>> if allowed:
...     myHouse.burnBuilding()
...
burn baby burn!


Am i getting close?