s4/getnc_exop: Initial implementation of a testsuite for GetNCChanges extended opeart...

diff --git a/source4/torture/drs/python/getnc_exop.py b/source4/torture/drs/python/getnc_exop.py
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+++ b/source4/torture/drs/python/getnc_exop.py
@@ -0,0 +1,136 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+#
+# Tests various schema replication scenarios
+#
+# Copyright (C) Kamen Mazdrashki <kamenim@samba.org> 2011
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+#
+
+#
+# Usage:
+#  export DC1=dc1_dns_name
+#  export DC2=dc2_dns_name
+#  export SUBUNITRUN=$samba4srcdir/scripting/bin/subunitrun
+#  PYTHONPATH="$PYTHONPATH:$samba4srcdir/torture/drs/python" $SUBUNITRUN getnc_exop -U"$DOMAIN/$DC_USERNAME"%"$DC_PASSWORD"
+#
+
+import drs_base
+import samba.tests
+
+from ldb import SCOPE_BASE
+
+from samba.dcerpc import drsuapi, misc, drsblobs
+from samba.drs_utils import drs_DsBind
+
+
+class DrsReplicaSyncTestCase(drs_base.DrsBaseTestCase):
+    """Intended as a semi-black box test case for DsGetNCChanges
+       implementation for extended operations. It should be testing
+       how DsGetNCChanges handles different input params (mostly invalid).
+       Final goal is to make DsGetNCChanges as binary compatible to
+       Windows implementation as possible"""
+
+    def setUp(self):
+        super(DrsReplicaSyncTestCase, self).setUp()
+
+    def tearDown(self):
+        super(DrsReplicaSyncTestCase, self).tearDown()
+
+    def _exop_req8(self, dest_dsa, invocation_id, nc_dn_str, exop):
+        req8 = drsuapi.DsGetNCChangesRequest8()
+    
+        req8.destination_dsa_guid = misc.GUID(dest_dsa)
+        req8.source_dsa_invocation_id = misc.GUID(invocation_id)
+        req8.naming_context = drsuapi.DsReplicaObjectIdentifier()
+        req8.naming_context.dn = unicode(nc_dn_str)
+        req8.highwatermark = drsuapi.DsReplicaHighWaterMark()
+        req8.highwatermark.tmp_highest_usn = 0
+        req8.highwatermark.reserved_usn = 0
+        req8.highwatermark.highest_usn = 0
+        req8.uptodateness_vector = None
+        req8.replica_flags = 0
+        req8.max_object_count = 0
+        req8.max_ndr_size = 402116
+        req8.extended_op = exop
+        req8.fsmo_info = 0
+        req8.partial_attribute_set = None
+        req8.partial_attribute_set_ex = None
+        req8.mapping_ctr.num_mappings = 0
+        req8.mapping_ctr.mappings = None
+    
+        return req8
+
+    def _ds_bind(self, server_name):
+        binding_str = "ncacn_ip_tcp:%s[print,seal]" % server_name
+
+        drs = drsuapi.drsuapi(binding_str, self.get_loadparm(), self.get_credentials())
+        (drs_handle, supported_extensions) = drs_DsBind(drs)
+        return (drs, drs_handle)
+
+    def _determine_fSMORoleOwner(self, fsmo_obj_dn):
+        """Returns (owner, not_owner) pair where:
+             owner: dns name for FSMO owner
+             not_owner: dns name for DC not owning the FSMO"""
+        res = self.ldb_dc1.search(fsmo_obj_dn,
+                                  scope=SCOPE_BASE, attrs=["fSMORoleOwner"])
+        assert len(res) == 1, "Only one fSMORoleOwner value expected for %s!"%fsmo_obj_dn
+        fsmo_owner = res[0]["fSMORoleOwner"][0]
+        if fsmo_owner == self.info_dc1["dsServiceName"][0]:
+            return (self.dnsname_dc1, self.dnsname_dc2)
+        return (self.dnsname_dc2, self.dnsname_dc1)
+
+    def _check_exop_failed(self, ctr6, expected_failure):
+        c = drsuapi.DsGetNCChangesCtr6()
+        self.assertEqual(ctr6.extended_ret, expected_failure)
+        self.assertEqual(ctr6.object_count, 0)
+        self.assertEqual(ctr6.first_object, None)
+        self.aserrtEqual(ctr6.more_data, False)
+        self.assertEqual(ctr6.nc_object_count, 0)
+        self.assertEqual(ctr6.nc_linked_attributes_count, 0)
+        self.assertEqual(ctr6.linked_attributes_count, 0)
+        self.assertEqual(ctr6.linked_attributes, None)
+        self.assertEqual(ctr6.drs_error, 0)
+
+    def test_FSMONotOwner(self):
+        """Test role transfer with against DC not owner of the role"""
+        fsmo_dn = self.ldb_dc1.get_schema_basedn()
+        (fsmo_owner_dc, fsmo_not_owner_dc) = self._determine_fSMORoleOwner(fsmo_dn)
+
+        req8 = self._exop_req8(dest_dsa="9c637462-5b8c-4467-aef2-bdb1f57bc4ef",
+                               invocation_id=self.ldb_dc1.get_invocation_id(),
+                               nc_dn_str=fsmo_dn,
+                               exop=drsuapi.DRSUAPI_EXOP_FSMO_REQ_ROLE)
+
+        (drs, drs_handle) = self._ds_bind(fsmo_not_owner_dc)
+        (level, ctr) = drs.DsGetNCChanges(drs_handle, 8, req8)
+        self.assertEqual(level, 6, "Expected level 6 response!")
+        self._check_exop_failed(ctr, drsuapi.DRSUAPI_EXOP_ERR_FSMO_NOT_OWNER)
+
+    def test_InvalidDestDSA(self):
+        """Test role transfer with invalid destination DSA guid"""
+        fsmo_dn = self.ldb_dc1.get_schema_basedn()
+        (fsmo_owner_dc, fsmo_not_owner_dc) = self._determine_fSMORoleOwner(fsmo_dn)
+
+        req8 = self._exop_req8(dest_dsa="9c637462-5b8c-4467-aef2-bdb1f57bc4ef",
+                               invocation_id=self.ldb_dc1.get_invocation_id(),
+                               nc_dn_str=self.ldb_dc1.get_schema_basedn(),
+                               exop=drsuapi.DRSUAPI_EXOP_FSMO_REQ_ROLE)
+
+        (drs, drs_handle) = self._ds_bind(fsmo_owner_dc)
+        (level, ctr) = drs.DsGetNCChanges(drs_handle, 8, req8)
+        self.assertEqual(level, 6, "Expected level 6 response!")
+        #ctr = drsuapi.DsGetNCChangesCtr6()
+        self._check_exop_failed(ctr, drsuapi.DRSUAPI_EXOP_ERR_UNKNOWN_CALLER)