join: Avoid searching for more than strictly required during sanity check

We check for the default base DN as this does require authentication, but
we do not need to search for more than just that (so use SCOPE_BASE) and
we need no attributes, so ask for none

Signed-off-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Douglas Bagnall <douglas.bagnall@catalyst.net.nz>

diff --git a/python/samba/join.py b/python/samba/join.py
index 6a9c3b9807ffb60e292f5521a69dddf2815521ce..75106ff52fa61576641e1cf157942678e4010dd5 100644 (file)
--- a/python/samba/join.py
+++ b/python/samba/join.py
@@ -112,9 +112,9 @@ class DCJoinContext(object):
             ctx.site = DEFAULTSITE
 
         try:
-            ctx.samdb.search(scope=ldb.SCOPE_ONELEVEL, attrs=["dn"])
-        except ldb.LdbError as e4:
-            (enum, estr) = e4.args
+            ctx.samdb.search(scope=ldb.SCOPE_BASE, attrs=[])
+        except ldb.LdbError as e:
+            (enum, estr) = e.args
             raise DCJoinException(estr)
 
         ctx.base_dn = str(ctx.samdb.get_default_basedn())