Don't allow managed groups to have group password policy.

UPG cannot have members and we use memberOf in class of service to determine
which policy to apply.

ticket 160

ipalib/errors.py

@@ -1095,6 +1095,21 @@ class ManagedGroupError(ExecutionError):
     errno = 4020
     format = _('Deleting a managed group is not allowed. It must be detached first.')
 
+class ManagedPolicyError(ExecutionError):
+    """
+    **4021** Raised when password policy is assigned to a managed group
+
+    For example:
+
+    >>> raise ManagedPolicyError()
+    Traceback (most recent call last):
+      ...
+    ManagedPolicyError: A managed group cannot have a password policy.
+    """
+
+    errno = 4021
+    format = _('A managed group cannot have a password policy.')
+
 class BuiltinError(ExecutionError):
     """
     **4100** Base class for builtin execution errors (*4100 - 4199*).

ipalib/plugins/pwpolicy.py

@@ -115,7 +115,10 @@ class cosentry_add(LDAPCreate):
 
     def pre_callback(self, ldap, dn, entry_attrs, attrs_list, *keys, **options):
         # check for existence of the group
-        self.api.Command.group_show(keys[-1])
+        result = self.api.Command.group_show(keys[-1], all=True)['result']
+        oc = map(lambda x:x.lower(),result['objectclass'])
+        if 'mepmanagedentry' in oc:
+            raise errors.ManagedPolicyError()
         self.obj.check_priority_uniqueness(*keys, **options)
         del entry_attrs['cn']
         return dn

tests/test_xmlrpc/test_pwpolicy.py

@@ -149,7 +149,18 @@ class test_pwpolicy(XMLRPC_test):
         entry = api.Command['pwpolicy_mod'](self.group, krbminpwdlife=50)['result']
         assert_attr_equal(entry, 'krbminpwdlife', '50')
 
-    def test_a_pwpolicy_del(self):
+    def test_a_pwpolicy_managed(self):
+        """
+        Test adding password policy to a managed group.
+        """
+        try:
+            entry = api.Command['pwpolicy_add'](self.user, krbminpwdlife=50, cospriority=2)['result']
+        except errors.ManagedPolicyError:
+            pass
+        else:
+            assert False
+
+    def test_b_pwpolicy_del(self):
         """
         Test the `xmlrpc.pwpolicy_del` method.
         """