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# Copyright 2010-2011 Canonical Ltd. This software is licensed under the
# GNU Affero General Public License version 3 (see the file LICENSE).
"""Security adapters for the bugs module."""
__metaclass__ = type
__all__ = []
from zope.component import getUtility
from lp.app.interfaces.launchpad import ILaunchpadCelebrities
from lp.app.security import (
AnonymousAuthorization,
AuthorizationBase,
DelegatedAuthorization,
)
from lp.bugs.interfaces.bug import IBug
from lp.bugs.interfaces.bugattachment import IBugAttachment
from lp.bugs.interfaces.bugbranch import IBugBranch
from lp.bugs.interfaces.bugnomination import IBugNomination
from lp.bugs.interfaces.bugsubscription import IBugSubscription
from lp.bugs.interfaces.bugsubscriptionfilter import IBugSubscriptionFilter
from lp.bugs.interfaces.bugsupervisor import IHasBugSupervisor
from lp.bugs.interfaces.bugtask import IBugTaskDelete
from lp.bugs.interfaces.bugtracker import IBugTracker
from lp.bugs.interfaces.bugwatch import IBugWatch
from lp.bugs.interfaces.hasbug import IHasBug
from lp.bugs.interfaces.structuralsubscription import IStructuralSubscription
from lp.registry.interfaces.role import IHasOwner
from lp.services.messages.interfaces.message import IMessage
class EditBugNominationStatus(AuthorizationBase):
permission = 'launchpad.Driver'
usedfor = IBugNomination
def checkAuthenticated(self, user):
return self.obj.canApprove(user.person)
class EditBugTask(AuthorizationBase):
"""Permission checker for editing objects linked to a bug.
Allow any logged-in user to edit objects linked to public
bugs. Allow only explicit subscribers to edit objects linked to
private bugs.
"""
permission = 'launchpad.Edit'
usedfor = IHasBug
def checkAuthenticated(self, user):
# Delegated entirely to the bug.
return self.obj.bug.userCanView(user)
class DeleteBugTask(AuthorizationBase):
permission = 'launchpad.Delete'
usedfor = IBugTaskDelete
def checkAuthenticated(self, user):
"""Check that a user may delete a bugtask.
A user may delete a bugtask if:
- project maintainer
- task creator
- bug supervisor
"""
if user is None:
return False
# Admins can always delete bugtasks.
if user.inTeam(getUtility(ILaunchpadCelebrities).admin):
return True
bugtask = self.obj
owner = None
if IHasOwner.providedBy(bugtask.pillar):
owner = bugtask.pillar.owner
bugsupervisor = None
if IHasBugSupervisor.providedBy(bugtask.pillar):
bugsupervisor = bugtask.pillar.bug_supervisor
return (
user.inTeam(owner) or
user.inTeam(bugsupervisor) or
user.inTeam(bugtask.owner))
class AdminDeleteBugTask(DeleteBugTask):
"""Launchpad admins can also delete bug tasks."""
permission = 'launchpad.Admin'
class PublicToAllOrPrivateToExplicitSubscribersForBugTask(AuthorizationBase):
permission = 'launchpad.View'
usedfor = IHasBug
def checkAuthenticated(self, user):
return self.obj.bug.userCanView(user.person)
def checkUnauthenticated(self):
"""Allow anonymous users to see non-private bugs only."""
return not self.obj.bug.private
class EditPublicByLoggedInUserAndPrivateByExplicitSubscribers(
AuthorizationBase):
permission = 'launchpad.Edit'
usedfor = IBug
def checkAuthenticated(self, user):
"""Allow any logged in user to edit a public bug, and only
explicit subscribers to edit private bugs. Any bug that can be
seen can be edited.
"""
return self.obj.userCanView(user)
def checkUnauthenticated(self):
"""Never allow unauthenticated users to edit a bug."""
return False
class PublicToAllOrPrivateToExplicitSubscribersForBug(AuthorizationBase):
permission = 'launchpad.View'
usedfor = IBug
def checkAuthenticated(self, user):
"""Allow any user to see non-private bugs, but only explicit
subscribers to see private bugs.
"""
return self.obj.userCanView(user.person)
def checkUnauthenticated(self):
"""Allow anonymous users to see non-private bugs only."""
return not self.obj.private
class EditBugBranch(EditPublicByLoggedInUserAndPrivateByExplicitSubscribers):
permission = 'launchpad.Edit'
usedfor = IBugBranch
def __init__(self, bug_branch):
# The same permissions as for the BugBranch's bug should apply
# to the BugBranch itself.
super(EditBugBranch, self).__init__(bug_branch.bug)
class ViewBugAttachment(DelegatedAuthorization):
"""Security adapter for viewing a bug attachment.
If the user is authorized to view the bug, he's allowed to view the
attachment.
"""
permission = 'launchpad.View'
usedfor = IBugAttachment
def __init__(self, bugattachment):
super(ViewBugAttachment, self).__init__(
bugattachment, bugattachment.bug)
class EditBugAttachment(DelegatedAuthorization):
"""Security adapter for editing a bug attachment.
If the user is authorized to view the bug, he's allowed to edit the
attachment.
"""
permission = 'launchpad.Edit'
usedfor = IBugAttachment
def __init__(self, bugattachment):
super(EditBugAttachment, self).__init__(
bugattachment, bugattachment.bug)
class ViewBugSubscription(AnonymousAuthorization):
usedfor = IBugSubscription
class EditBugSubscription(AuthorizationBase):
permission = 'launchpad.Edit'
usedfor = IBugSubscription
def checkAuthenticated(self, user):
"""Check that a user may edit a subscription.
A user may edit a subscription if:
- They are the owner of the subscription.
- They are the owner of the team that owns the subscription.
- They are an admin of the team that owns the subscription.
"""
if self.obj.person.is_team:
return (
self.obj.person.teamowner == user.person or
user.person in self.obj.person.adminmembers)
else:
return user.person == self.obj.person
class ViewBugMessage(AnonymousAuthorization):
usedfor = IMessage
class ViewBugTracker(AnonymousAuthorization):
"""Anyone can view a bug tracker."""
usedfor = IBugTracker
class EditBugTracker(AuthorizationBase):
permission = 'launchpad.Edit'
usedfor = IBugTracker
def checkAuthenticated(self, user):
"""Any logged-in user can edit a bug tracker."""
return True
class AdminBugTracker(AuthorizationBase):
permission = 'launchpad.Admin'
usedfor = IBugTracker
def checkAuthenticated(self, user):
return (
user.in_janitor or
user.in_admin or
user.in_launchpad_developers)
class AdminBugWatch(AuthorizationBase):
permission = 'launchpad.Admin'
usedfor = IBugWatch
def checkAuthenticated(self, user):
return (
user.in_admin or
user.in_launchpad_developers)
class EditStructuralSubscription(AuthorizationBase):
"""Edit permissions for `IStructuralSubscription`."""
permission = "launchpad.Edit"
usedfor = IStructuralSubscription
def checkAuthenticated(self, user):
"""Subscribers can edit their own structural subscriptions."""
return user.inTeam(self.obj.subscriber)
class EditBugSubscriptionFilter(AuthorizationBase):
"""Bug subscription filters may only be modified by the subscriber."""
permission = 'launchpad.Edit'
usedfor = IBugSubscriptionFilter
def checkAuthenticated(self, user):
return (
self.obj.structural_subscription is None or
user.inTeam(self.obj.structural_subscription.subscriber))
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