Changeset 6180 for main/waeup.sirp/trunk/src/waeup/sirp/users.py

Timestamp:

21 May 2011, 01:31:03 (13 years ago)

Author:

uli

Message:

Add local roles dicts for user accounts. That seems to
need pretty much machinery, but seems also to work. So,
why not?

We have a new event type, that should be fired when
a local role is set or unset somewhere.

We have also two new event subscribers, one listening
to the new event (and then updates the user account
local roles listings), and another one listening to
IObjectRemoved events.

The latter is the trick to keep the local role listings
in user accounts more or less up-to-date. Without it
these lists would grow and grow, not noticing that
the objects they refer to, have gone already.

We now must think about subscribing to other events.
What happens, when an object is moved or copied.
Will the local roles then be copied as well? And would
that fact be reflected in user accounts?

Beside this we have to find all places in sources
where local roles are set/unset and trigger the new
LocalRoleSetEvent? defined in users.py.

Samples for the whole new stuff are in authentication.txt.

File:

• main/waeup.sirp/trunk/src/waeup/sirp/users.py (modified) (3 diffs)

main/waeup.sirp/trunk/src/waeup/sirp/users.py

@@ -2 +2 @@
 """
 import grok
+from zope.event import notify
+from zope.interface import Interface
+from zope.securitypolicy.interfaces import IPrincipalRoleMap
 from waeup.sirp.authentication import Account
-from waeup.sirp.interfaces import IUserContainer
+from waeup.sirp.interfaces import IUserContainer, ILocalRoleSetEvent
 
 class UserContainer(grok.Container):
@@ -26 +29 @@
         """
         self[account.name] = account
-        
+
     def delUser(self, name):
         """Delete user, if an account with the given name exists.
@@ -34 +37 @@
         if name in self.keys():
             del self[name]
+
+class LocalRoleSetEvent(object):
+
+    grok.implements(ILocalRoleSetEvent)
+
+    def __init__(self, object, role_id, principal_id, granted=True):
+        self.object = object
+        self.role_id = role_id
+        self.principal_id = principal_id
+        self.granted = granted
+
+@grok.subscribe(Interface, ILocalRoleSetEvent)
+def handle_local_role_changed(obj, event):
+    site = grok.getSite()
+    if site is None:
+        return
+    users = site['users']
+    role_id = event.role_id
+    if event.principal_id not in users.keys():
+        return
+    user = users[event.principal_id]
+    user.notifyLocalRoleChanged(event.object, event.role_id, event.granted)
+    return
+
+@grok.subscribe(Interface, grok.IObjectRemovedEvent)
+def handle_local_roles_on_obj_removal(obj, event):
+    role_map = IPrincipalRoleMap(obj)
+    for local_role, user_name, setting in role_map.getPrincipalsAndRoles():
+        notify(LocalRoleSetEvent(
+                obj, local_role, user_name, granted=False))
+    return