def getGroupPrincipals(group, auth=None):
if auth is None:
auth = getUtility(IAuthentication)
if not IMemberGetterGroup.providedBy(group):
return ()
seen = set()
stack = [iter(group.getMembers())]
while stack:
try:
p_id = stack[-1].next()
except StopIteration:
stack.pop()
continue
if p_id not in seen:
try:
principal = auth.getPrincipal(p_id)
except PrincipalLookupError:
continue
seen.add(p_id)
if IMemberGetterGroup.providedBy(principal):
stack.append(iter(principal.getMembers()))
return seen
def getRolesForPrincipal(self, principal_id):
if principal_id == self.principal.id:
return ('content.Owner', Allow),
for group in self.groups.getGroups():
if principal_id in getattr(group, 'leaders', ()):
return (('team.Leader', Allow),
('team.Member', Allow))
elif IMemberGetterGroup.providedBy(group) and principal_id in group.getMembers():
return (('team.Member', Allow),)
return ()
