2 # -*- coding: utf-8 -*-
4 # Tests various schema replication scenarios
6 # Copyright (C) Catalyst.Net Ltd. 2017
8 # This program is free software; you can redistribute it and/or modify
9 # it under the terms of the GNU General Public License as published by
10 # the Free Software Foundation; either version 3 of the License, or
11 # (at your option) any later version.
13 # This program is distributed in the hope that it will be useful,
14 # but WITHOUT ANY WARRANTY; without even the implied warranty of
15 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 # GNU General Public License for more details.
18 # You should have received a copy of the GNU General Public License
19 # along with this program. If not, see <http://www.gnu.org/licenses/>.
24 # export DC1=dc1_dns_name
25 # export DC2=dc2_dns_name
26 # export SUBUNITRUN=$samba4srcdir/scripting/bin/subunitrun
27 # PYTHONPATH="$PYTHONPATH:$samba4srcdir/torture/drs/python" $SUBUNITRUN getncchanges -U"$DOMAIN/$DC_USERNAME"%"$DC_PASSWORD"
30 from __future__ import print_function
34 from ldb import SCOPE_BASE
37 from samba.dcerpc import drsuapi
39 class DrsReplicaSyncIntegrityTestCase(drs_base.DrsBaseTestCase):
41 super(DrsReplicaSyncIntegrityTestCase, self).setUp()
43 self.init_test_state()
45 # Note that DC2 is the DC with the testenv-specific quirks (e.g. it's
46 # the vampire_dc), so we point this test directly at that DC
47 self.set_test_ldb_dc(self.ldb_dc2)
49 # add some randomness to the test OU. (Deletion of the last test's
50 # objects can be slow to replicate out. So the OU created by a previous
51 # testenv may still exist at this point).
52 rand = random.randint(1, 10000000)
53 self.base_dn = self.test_ldb_dc.get_default_basedn()
54 self.ou = "OU=getncchanges%d_test,%s" %(rand, self.base_dn)
55 self.test_ldb_dc.add({
57 "objectclass": "organizationalUnit"})
59 self.default_conn = DcConnection(self, self.ldb_dc2, self.dnsname_dc2)
60 self.set_dc_connection(self.default_conn)
63 super(DrsReplicaSyncIntegrityTestCase, self).tearDown()
64 # tidyup groups and users
66 self.ldb_dc2.delete(self.ou, ["tree_delete:1"])
67 except ldb.LdbError as e:
68 (enum, string) = e.args
69 if enum == ldb.ERR_NO_SUCH_OBJECT:
72 def init_test_state(self):
78 # 100 is the minimum max_objects that Microsoft seems to honour
79 # (the max honoured is 400ish), so we use that in these tests
80 self.max_objects = 100
82 # store whether we used GET_TGT/GET_ANC flags in the requests
83 self.used_get_tgt = False
84 self.used_get_anc = False
86 def add_object(self, dn, objectclass="organizationalunit"):
87 """Adds an OU object"""
88 self.test_ldb_dc.add({"dn": dn, "objectclass": objectclass})
89 res = self.test_ldb_dc.search(base=dn, scope=SCOPE_BASE)
90 self.assertEquals(len(res), 1)
92 def modify_object(self, dn, attr, value):
93 """Modifies an object's USN by adding an attribute value to it"""
95 m.dn = ldb.Dn(self.test_ldb_dc, dn)
96 m[attr] = ldb.MessageElement(value, ldb.FLAG_MOD_ADD, attr)
97 self.test_ldb_dc.modify(m)
99 def delete_attribute(self, dn, attr, value):
100 """Deletes an attribute from an object"""
102 m.dn = ldb.Dn(self.test_ldb_dc, dn)
103 m[attr] = ldb.MessageElement(value, ldb.FLAG_MOD_DELETE, attr)
104 self.test_ldb_dc.modify(m)
106 def start_new_repl_cycle(self):
107 """Resets enough state info to start a new replication cycle"""
108 # reset rxd_links, but leave rxd_guids and rxd_dn_list alone so we know
109 # whether a parent/target is unknown and needs GET_ANC/GET_TGT to resolve
112 self.used_get_tgt = False
113 self.used_get_anc = False
114 # mostly preserve self.last_ctr, so that we use the last HWM
115 if self.last_ctr is not None:
116 self.last_ctr.more_data = True
118 def create_object_range(self, start, end, prefix="",
119 children=None, parent_list=None):
121 Creates a block of objects. Object names are numbered sequentially,
122 using the optional prefix supplied. If the children parameter is
123 supplied it will create a parent-child hierarchy and return the
124 top-level parents separately.
128 # Use dummy/empty lists if we're not creating a parent/child hierarchy
132 if parent_list is None:
135 # Create the parents first, then the children.
136 # This makes it easier to see in debug when GET_ANC takes effect
137 # because the parent/children become interleaved (by default,
138 # this approach means the objects are organized into blocks of
139 # parents and blocks of children together)
140 for x in range(start, end):
141 ou = "OU=test_ou_%s%d,%s" % (prefix, x, self.ou)
145 # keep track of the top-level parents (if needed)
146 parent_list.append(ou)
148 # create the block of children (if needed)
149 for x in range(start, end):
150 for child in children:
151 ou = "OU=test_ou_child%s%d,%s" % (child, x, parent_list[x])
157 def assert_expected_data(self, expected_list):
159 Asserts that we received all the DNs that we expected and
162 received_list = self.rxd_dn_list
164 # Note that with GET_ANC Windows can end up sending the same parent
165 # object multiple times, so this might be noteworthy but doesn't
166 # warrant failing the test
167 if (len(received_list) != len(expected_list)):
168 print("Note: received %d objects but expected %d" %(len(received_list),
171 # Check that we received every object that we were expecting
172 for dn in expected_list:
173 self.assertTrue(dn in received_list, "DN '%s' missing from replication." % dn)
175 def test_repl_integrity(self):
177 Modify the objects being replicated while the replication is still
178 in progress and check that no object loss occurs.
181 # The server behaviour differs between samba and Windows. Samba returns
182 # the objects in the original order (up to the pre-modify HWM). Windows
183 # incorporates the modified objects and returns them in the new order
184 # (i.e. modified objects last), up to the post-modify HWM. The Microsoft
185 # docs state the Windows behaviour is optional.
187 # Create a range of objects to replicate.
188 expected_dn_list = self.create_object_range(0, 400)
189 (orig_hwm, unused) = self._get_highest_hwm_utdv(self.test_ldb_dc)
191 # We ask for the first page of 100 objects.
192 # For this test, we don't care what order we receive the objects in,
193 # so long as by the end we've received everything
196 # Modify some of the second page of objects. This should bump the highwatermark
197 for x in range(100, 200):
198 self.modify_object(expected_dn_list[x], "displayName", "OU%d" % x)
200 (post_modify_hwm, unused) = self._get_highest_hwm_utdv(self.test_ldb_dc)
201 self.assertTrue(post_modify_hwm.highest_usn > orig_hwm.highest_usn)
203 # Get the remaining blocks of data
204 while not self.replication_complete():
207 # Check we still receive all the objects we're expecting
208 self.assert_expected_data(expected_dn_list)
210 def is_parent_known(self, dn, known_dn_list):
212 Returns True if the parent of the dn specified is in known_dn_list
215 # we can sometimes get system objects like the RID Manager returned.
216 # Ignore anything that is not under the test OU we created
217 if self.ou not in dn:
220 # Remove the child portion from the name to get the parent's DN
221 name_substrings = dn.split(",")
222 del name_substrings[0]
224 parent_dn = ",".join(name_substrings)
226 # check either this object is a parent (it's parent is the top-level
227 # test object), or its parent has been seen previously
228 return parent_dn == self.ou or parent_dn in known_dn_list
230 def _repl_send_request(self, get_anc=False, get_tgt=False):
231 """Sends a GetNCChanges request for the next block of replication data."""
233 # we're just trying to mimic regular client behaviour here, so just
234 # use the highwatermark in the last response we received
236 highwatermark = self.last_ctr.new_highwatermark
237 uptodateness_vector = self.last_ctr.uptodateness_vector
239 # this is the first replication chunk
241 uptodateness_vector = None
243 # Ask for the next block of replication data
244 replica_flags = drsuapi.DRSUAPI_DRS_WRIT_REP
248 replica_flags = drsuapi.DRSUAPI_DRS_WRIT_REP | drsuapi.DRSUAPI_DRS_GET_ANC
249 self.used_get_anc = True
252 more_flags = drsuapi.DRSUAPI_DRS_GET_TGT
253 self.used_get_tgt = True
255 # return the response from the DC
256 return self._get_replication(replica_flags,
257 max_objects=self.max_objects,
258 highwatermark=highwatermark,
259 uptodateness_vector=uptodateness_vector,
260 more_flags=more_flags)
262 def repl_get_next(self, get_anc=False, get_tgt=False, assert_links=False):
264 Requests the next block of replication data. This tries to simulate
265 client behaviour - if we receive a replicated object that we don't know
266 the parent of, then re-request the block with the GET_ANC flag set.
267 If we don't know the target object for a linked attribute, then
268 re-request with GET_TGT.
271 # send a request to the DC and get the response
272 ctr6 = self._repl_send_request(get_anc=get_anc, get_tgt=get_tgt)
274 # extract the object DNs and their GUIDs from the response
275 rxd_dn_list = self._get_ctr6_dn_list(ctr6)
276 rxd_guid_list = self._get_ctr6_object_guids(ctr6)
278 # we'll add new objects as we discover them, so take a copy of the
279 # ones we already know about, so we can modify these lists safely
280 known_objects = self.rxd_dn_list[:]
281 known_guids = self.rxd_guids[:]
283 # check that we know the parent for every object received
284 for i in range(0, len(rxd_dn_list)):
287 guid = rxd_guid_list[i]
289 if self.is_parent_known(dn, known_objects):
291 # the new DN is now known so add it to the list.
292 # It may be the parent of another child in this block
293 known_objects.append(dn)
294 known_guids.append(guid)
296 # If we've already set the GET_ANC flag then it should mean
297 # we receive the parents before the child
298 self.assertFalse(get_anc, "Unknown parent for object %s" % dn)
300 print("Unknown parent for %s - try GET_ANC" % dn)
302 # try the same thing again with the GET_ANC flag set this time
303 return self.repl_get_next(get_anc=True, get_tgt=get_tgt,
304 assert_links=assert_links)
306 # check we know about references to any objects in the linked attritbutes
307 received_links = self._get_ctr6_links(ctr6)
309 # This is so that older versions of Samba fail - we want the links to be
310 # sent roughly with the objects, rather than getting all links at the end
312 self.assertTrue(len(received_links) > 0,
313 "Links were expected in the GetNCChanges response")
315 for link in received_links:
317 # skip any links that aren't part of the test
318 if self.ou not in link.targetDN:
321 # check the source object is known (Windows can actually send links
322 # where we don't know the source object yet). Samba shouldn't ever
323 # hit this case because it gets the links based on the source
324 if link.identifier not in known_guids:
326 # If we've already set the GET_ANC flag then it should mean
327 # this case doesn't happen
328 self.assertFalse(get_anc, "Unknown source object for GUID %s"
331 print("Unknown source GUID %s - try GET_ANC" % link.identifier)
333 # try the same thing again with the GET_ANC flag set this time
334 return self.repl_get_next(get_anc=True, get_tgt=get_tgt,
335 assert_links=assert_links)
337 # check we know the target object
338 if link.targetGUID not in known_guids:
340 # If we've already set the GET_TGT flag then we should have
341 # already received any objects we need to know about
342 self.assertFalse(get_tgt, "Unknown linked target for object %s"
345 print("Unknown target for %s - try GET_TGT" % link.targetDN)
347 # try the same thing again with the GET_TGT flag set this time
348 return self.repl_get_next(get_anc=get_anc, get_tgt=True,
349 assert_links=assert_links)
351 # store the last successful result so we know what HWM to request next
354 # store the objects, GUIDs, and links we received
355 self.rxd_dn_list += self._get_ctr6_dn_list(ctr6)
356 self.rxd_links += self._get_ctr6_links(ctr6)
357 self.rxd_guids += self._get_ctr6_object_guids(ctr6)
361 def replication_complete(self):
362 """Returns True if the current/last replication cycle is complete"""
364 if self.last_ctr is None or self.last_ctr.more_data:
369 def test_repl_integrity_get_anc(self):
371 Modify the parent objects being replicated while the replication is still
372 in progress (using GET_ANC) and check that no object loss occurs.
375 # Note that GET_ANC behaviour varies between Windows and Samba.
376 # On Samba GET_ANC results in the replication restarting from the very
377 # beginning. After that, Samba remembers GET_ANC and also sends the
378 # parents in subsequent requests (regardless of whether GET_ANC is
379 # specified in the later request).
380 # Windows only sends the parents if GET_ANC was specified in the last
381 # request. It will also resend a parent, even if it's already sent the
382 # parent in a previous response (whereas Samba doesn't).
384 # Create a small block of 50 parents, each with 2 children (A and B)
385 # This is so that we receive some children in the first block, so we
386 # can resend with GET_ANC before we learn too many parents
388 expected_dn_list = self.create_object_range(0, 50, prefix="parent",
390 parent_list=parent_dn_list)
392 # create the remaining parents and children
393 expected_dn_list += self.create_object_range(50, 150, prefix="parent",
395 parent_list=parent_dn_list)
397 # We've now got objects in the following order:
398 # [50 parents][100 children][100 parents][200 children]
400 # Modify the first parent so that it's now ordered last by USN
401 # This means we set the GET_ANC flag pretty much straight away
402 # because we receive the first child before the first parent
403 self.modify_object(parent_dn_list[0], "displayName", "OU0")
405 # modify a later block of parents so they also get reordered
406 for x in range(50, 100):
407 self.modify_object(parent_dn_list[x], "displayName", "OU%d" % x)
409 # Get the first block of objects - this should resend the request with
410 # GET_ANC set because we won't know about the first child's parent.
411 # On samba GET_ANC essentially starts the sync from scratch again, so
412 # we get this over with early before we learn too many parents
415 # modify the last chunk of parents. They should now have a USN higher
416 # than the highwater-mark for the replication cycle
417 for x in range(100, 150):
418 self.modify_object(parent_dn_list[x], "displayName", "OU%d" % x)
420 # Get the remaining blocks of data - this will resend the request with
421 # GET_ANC if it encounters an object it doesn't have the parent for.
422 while not self.replication_complete():
425 # The way the test objects have been created should force
426 # self.repl_get_next() to use the GET_ANC flag. If this doesn't
427 # actually happen, then the test isn't doing its job properly
428 self.assertTrue(self.used_get_anc,
429 "Test didn't use the GET_ANC flag as expected")
431 # Check we get all the objects we're expecting
432 self.assert_expected_data(expected_dn_list)
434 def assert_expected_links(self, objects_with_links, link_attr="managedBy",
437 Asserts that a GetNCChanges response contains any expected links
438 for the objects it contains.
440 received_links = self.rxd_links
442 if num_expected is None:
443 num_expected = len(objects_with_links)
445 self.assertTrue(len(received_links) == num_expected,
446 "Received %d links but expected %d"
447 %(len(received_links), num_expected))
449 for dn in objects_with_links:
450 self.assert_object_has_link(dn, link_attr, received_links)
452 def assert_object_has_link(self, dn, link_attr, received_links):
454 Queries the object in the DB and asserts there is a link in the
455 GetNCChanges response that matches.
458 # Look up the link attribute in the DB
459 # The extended_dn option will dump the GUID info for the link
460 # attribute (as a hex blob)
461 res = self.test_ldb_dc.search(ldb.Dn(self.test_ldb_dc, dn), attrs=[link_attr],
462 controls=['extended_dn:1:0'], scope=ldb.SCOPE_BASE)
464 # We didn't find the expected link attribute in the DB for the object.
465 # Something has gone wrong somewhere...
466 self.assertTrue(link_attr in res[0], "%s in DB doesn't have attribute %s"
469 # find the received link in the list and assert that the target and
470 # source GUIDs match what's in the DB
471 for val in res[0][link_attr]:
472 # Work out the expected source and target GUIDs for the DB link
473 target_dn = ldb.Dn(self.test_ldb_dc, val)
474 targetGUID_blob = target_dn.get_extended_component("GUID")
475 sourceGUID_blob = res[0].dn.get_extended_component("GUID")
479 for link in received_links:
480 if link.selfGUID_blob == sourceGUID_blob and \
481 link.targetGUID_blob == targetGUID_blob:
486 print("Link %s --> %s" %(dn[:25], link.targetDN[:25]))
489 self.assertTrue(found, "Did not receive expected link for DN %s" % dn)
491 def test_repl_get_tgt(self):
493 Creates a scenario where we should receive the linked attribute before
494 we know about the target object, and therefore need to use GET_TGT.
495 Note: Samba currently avoids this problem by sending all its links last
498 # create the test objects
499 reportees = self.create_object_range(0, 100, prefix="reportee")
500 managers = self.create_object_range(0, 100, prefix="manager")
501 all_objects = managers + reportees
502 expected_links = reportees
504 # add a link attribute to each reportee object that points to the
505 # corresponding manager object as the target
506 for i in range(0, 100):
507 self.modify_object(reportees[i], "managedBy", managers[i])
509 # touch the managers (the link-target objects) again to make sure the
510 # reportees (link source objects) get returned first by the replication
511 for i in range(0, 100):
512 self.modify_object(managers[i], "displayName", "OU%d" % i)
514 links_expected = True
516 # Get all the replication data - this code should resend the requests
518 while not self.replication_complete():
520 # get the next block of replication data (this sets GET_TGT if needed)
521 self.repl_get_next(assert_links=links_expected)
522 links_expected = len(self.rxd_links) < len(expected_links)
524 # The way the test objects have been created should force
525 # self.repl_get_next() to use the GET_TGT flag. If this doesn't
526 # actually happen, then the test isn't doing its job properly
527 self.assertTrue(self.used_get_tgt,
528 "Test didn't use the GET_TGT flag as expected")
530 # Check we get all the objects we're expecting
531 self.assert_expected_data(all_objects)
533 # Check we received links for all the reportees
534 self.assert_expected_links(expected_links)
536 def test_repl_get_tgt_chain(self):
538 Tests the behaviour of GET_TGT with a more complicated scenario.
539 Here we create a chain of objects linked together, so if we follow
540 the link target, then we'd traverse ~200 objects each time.
543 # create the test objects
544 objectsA = self.create_object_range(0, 100, prefix="AAA")
545 objectsB = self.create_object_range(0, 100, prefix="BBB")
546 objectsC = self.create_object_range(0, 100, prefix="CCC")
548 # create a complex set of object links:
549 # A0-->B0-->C1-->B2-->C3-->B4-->and so on...
550 # Basically each object-A should link to a circular chain of 200 B/C
551 # objects. We create the links in separate chunks here, as it makes it
552 # clearer what happens with the USN (links on Windows have their own
553 # USN, so this approach means the A->B/B->C links aren't interleaved)
554 for i in range(0, 100):
555 self.modify_object(objectsA[i], "managedBy", objectsB[i])
557 for i in range(0, 100):
558 self.modify_object(objectsB[i], "managedBy", objectsC[(i + 1) % 100])
560 for i in range(0, 100):
561 self.modify_object(objectsC[i], "managedBy", objectsB[(i + 1) % 100])
563 all_objects = objectsA + objectsB + objectsC
564 expected_links = all_objects
566 # the default order the objects now get returned in should be:
567 # [A0-A99][B0-B99][C0-C99]
569 links_expected = True
571 # Get all the replication data - this code should resend the requests
573 while not self.replication_complete():
575 # get the next block of replication data (this sets GET_TGT if needed)
576 self.repl_get_next(assert_links=links_expected)
577 links_expected = len(self.rxd_links) < len(expected_links)
579 # The way the test objects have been created should force
580 # self.repl_get_next() to use the GET_TGT flag. If this doesn't
581 # actually happen, then the test isn't doing its job properly
582 self.assertTrue(self.used_get_tgt,
583 "Test didn't use the GET_TGT flag as expected")
585 # Check we get all the objects we're expecting
586 self.assert_expected_data(all_objects)
588 # Check we received links for all the reportees
589 self.assert_expected_links(expected_links)
591 def test_repl_integrity_link_attr(self):
593 Tests adding links to new objects while a replication is in progress.
596 # create some source objects for the linked attributes, sandwiched
597 # between 2 blocks of filler objects
598 filler = self.create_object_range(0, 100, prefix="filler")
599 reportees = self.create_object_range(0, 100, prefix="reportee")
600 filler += self.create_object_range(100, 200, prefix="filler")
602 # Start the replication and get the first block of filler objects
603 # (We're being mean here and setting the GET_TGT flag right from the
604 # start. On earlier Samba versions, if the client encountered an
605 # unknown target object and retried with GET_TGT, it would restart the
606 # replication cycle from scratch, which avoids the problem).
607 self.repl_get_next(get_tgt=True)
609 # create the target objects and add the links. These objects should be
610 # outside the scope of the Samba replication cycle, but the links should
611 # still get sent with the source object
612 managers = self.create_object_range(0, 100, prefix="manager")
614 for i in range(0, 100):
615 self.modify_object(reportees[i], "managedBy", managers[i])
617 expected_objects = managers + reportees + filler
618 expected_links = reportees
620 # complete the replication
621 while not self.replication_complete():
622 self.repl_get_next(get_tgt=True)
624 # If we didn't receive the most recently created objects in the last
625 # replication cycle, then kick off another replication to get them
626 if len(self.rxd_dn_list) < len(expected_objects):
629 while not self.replication_complete():
632 # Check we get all the objects we're expecting
633 self.assert_expected_data(expected_objects)
635 # Check we received links for all the parents
636 self.assert_expected_links(expected_links)
638 def test_repl_get_anc_link_attr(self):
640 A basic GET_ANC test where the parents have linked attributes
643 # Create a block of 100 parents and 100 children
645 expected_dn_list = self.create_object_range(0, 100, prefix="parent",
647 parent_list=parent_dn_list)
649 # Add links from the parents to the children
650 for x in range(0, 100):
651 self.modify_object(parent_dn_list[x], "managedBy", expected_dn_list[x + 100])
653 # add some filler objects at the end. This allows us to easily see
654 # which chunk the links get sent in
655 expected_dn_list += self.create_object_range(0, 100, prefix="filler")
657 # We've now got objects in the following order:
658 # [100 x children][100 x parents][100 x filler]
660 # Get the replication data - because the block of children come first,
661 # this should retry the request with GET_ANC
662 while not self.replication_complete():
665 self.assertTrue(self.used_get_anc,
666 "Test didn't use the GET_ANC flag as expected")
668 # Check we get all the objects we're expecting
669 self.assert_expected_data(expected_dn_list)
671 # Check we received links for all the parents
672 self.assert_expected_links(parent_dn_list)
674 def test_repl_get_tgt_and_anc(self):
676 Check we can resolve an unknown ancestor when fetching the link target,
677 i.e. tests using GET_TGT and GET_ANC in combination
680 # Create some parent/child objects (the child will be the link target)
682 all_objects = self.create_object_range(0, 100, prefix="parent",
686 children = [item for item in all_objects if item not in parents]
688 # create the link source objects and link them to the child/target
689 la_sources = self.create_object_range(0, 100, prefix="la_src")
690 all_objects += la_sources
692 for i in range(0, 100):
693 self.modify_object(la_sources[i], "managedBy", children[i])
695 expected_links = la_sources
697 # modify the children/targets so they come after the link source
698 for x in range(0, 100):
699 self.modify_object(children[x], "displayName", "OU%d" % x)
701 # modify the parents, so they now come last in the replication
702 for x in range(0, 100):
703 self.modify_object(parents[x], "displayName", "OU%d" % x)
705 # We've now got objects in the following order:
706 # [100 la_source][100 la_target][100 parents (of la_target)]
708 links_expected = True
710 # Get all the replication data - this code should resend the requests
711 # with GET_TGT and GET_ANC
712 while not self.replication_complete():
714 # get the next block of replication data (this sets GET_TGT/GET_ANC)
715 self.repl_get_next(assert_links=links_expected)
716 links_expected = len(self.rxd_links) < len(expected_links)
718 # The way the test objects have been created should force
719 # self.repl_get_next() to use the GET_TGT/GET_ANC flags. If this
720 # doesn't actually happen, then the test isn't doing its job properly
721 self.assertTrue(self.used_get_tgt,
722 "Test didn't use the GET_TGT flag as expected")
723 self.assertTrue(self.used_get_anc,
724 "Test didn't use the GET_ANC flag as expected")
726 # Check we get all the objects we're expecting
727 self.assert_expected_data(all_objects)
729 # Check we received links for all the link sources
730 self.assert_expected_links(expected_links)
732 # Second part of test. Add some extra objects and kick off another
733 # replication. The test code will use the HWM from the last replication
734 # so we'll only receive the objects we modify below
735 self.start_new_repl_cycle()
737 # add an extra level of grandchildren that hang off a child
738 # that got created last time
739 new_parent = "OU=test_new_parent,%s" % children[0]
740 self.add_object(new_parent)
743 for x in range(0, 50):
744 dn = "OU=test_new_la_tgt%d,%s" % (x, new_parent)
746 new_children.append(dn)
748 # replace half of the links to point to the new children
749 for x in range(0, 50):
750 self.delete_attribute(la_sources[x], "managedBy", children[x])
751 self.modify_object(la_sources[x], "managedBy", new_children[x])
753 # add some filler objects to fill up the 1st chunk
754 filler = self.create_object_range(0, 100, prefix="filler")
756 # modify the new children/targets so they come after the link source
757 for x in range(0, 50):
758 self.modify_object(new_children[x], "displayName", "OU-%d" % x)
760 # modify the parent, so it now comes last in the replication
761 self.modify_object(new_parent, "displayName", "OU%d" % x)
763 # We should now get the modified objects in the following order:
764 # [50 links (x 2)][100 filler][50 new children][new parent]
765 # Note that the link sources aren't actually sent (their new linked
766 # attributes are sent, but apart from that, nothing has changed)
767 all_objects = filler + new_children + [new_parent]
768 expected_links = la_sources[:50]
770 links_expected = True
772 while not self.replication_complete():
773 self.repl_get_next(assert_links=links_expected)
774 links_expected = len(self.rxd_links) < len(expected_links)
776 self.assertTrue(self.used_get_tgt,
777 "Test didn't use the GET_TGT flag as expected")
778 self.assertTrue(self.used_get_anc,
779 "Test didn't use the GET_ANC flag as expected")
781 # Check we get all the objects we're expecting
782 self.assert_expected_data(all_objects)
784 # Check we received links (50 deleted links and 50 new)
785 self.assert_expected_links(expected_links, num_expected=100)
787 def _repl_integrity_obj_deletion(self, delete_link_source=True):
789 Tests deleting link objects while a replication is in progress.
792 # create some objects and link them together, with some filler
793 # object in between the link sources
794 la_sources = self.create_object_range(0, 100, prefix="la_source")
795 la_targets = self.create_object_range(0, 100, prefix="la_targets")
797 for i in range(0, 50):
798 self.modify_object(la_sources[i], "managedBy", la_targets[i])
800 filler = self.create_object_range(0, 100, prefix="filler")
802 for i in range(50, 100):
803 self.modify_object(la_sources[i], "managedBy", la_targets[i])
805 # touch the targets so that the sources get replicated first
806 for i in range(0, 100):
807 self.modify_object(la_targets[i], "displayName", "OU%d" % i)
809 # objects should now be in the following USN order:
810 # [50 la_source][100 filler][50 la_source][100 la_target]
812 # Get the first block containing 50 link sources
815 # delete either the link targets or link source objects
816 if delete_link_source:
817 objects_to_delete = la_sources
818 # in GET_TGT testenvs we only receive the first 50 source objects
819 expected_objects = la_sources[:50] + la_targets + filler
821 objects_to_delete = la_targets
822 expected_objects = la_sources + filler
824 for obj in objects_to_delete:
825 self.ldb_dc2.delete(obj)
827 # complete the replication
828 while not self.replication_complete():
831 # Check we get all the objects we're expecting
832 self.assert_expected_data(expected_objects)
834 # we can't use assert_expected_links() here because it tries to check
835 # against the deleted objects on the DC. (Although we receive some
836 # links from the first block processed, the Samba client should end up
837 # deleting these, as the source/target object involved is deleted)
838 self.assertTrue(len(self.rxd_links) == 50,
839 "Expected 50 links, not %d" % len(self.rxd_links))
841 def test_repl_integrity_src_obj_deletion(self):
842 self._repl_integrity_obj_deletion(delete_link_source=True)
844 def test_repl_integrity_tgt_obj_deletion(self):
845 self._repl_integrity_obj_deletion(delete_link_source=False)
847 def restore_deleted_object(self, guid, new_dn):
848 """Re-animates a deleted object"""
850 res = self.test_ldb_dc.search(base="<GUID=%s>" % self._GUID_string(guid), attrs=["isDeleted"],
851 controls=['show_deleted:1'], scope=ldb.SCOPE_BASE)
857 msg["isDeleted"] = ldb.MessageElement([], ldb.FLAG_MOD_DELETE, "isDeleted")
858 msg["distinguishedName"] = ldb.MessageElement([new_dn], ldb.FLAG_MOD_REPLACE, "distinguishedName")
859 self.test_ldb_dc.modify(msg, ["show_deleted:1"])
861 def sync_DCs(self, nc_dn=None):
862 # make sure DC1 has all the changes we've made to DC2
863 self._net_drs_replicate(DC=self.dnsname_dc1, fromDC=self.dnsname_dc2, nc_dn=nc_dn)
865 def get_object_guid(self, dn):
866 res = self.test_ldb_dc.search(base=dn, attrs=["objectGUID"], scope=ldb.SCOPE_BASE)
867 return res[0]['objectGUID'][0]
870 def set_dc_connection(self, conn):
872 Switches over the connection state info that the underlying drs_base
873 class uses so that we replicate with a different DC.
875 self.default_hwm = conn.default_hwm
876 self.default_utdv = conn.default_utdv
878 self.drs_handle = conn.drs_handle
879 self.set_test_ldb_dc(conn.ldb_dc)
881 def assert_DCs_replication_is_consistent(self, peer_conn, all_objects,
884 Replicates against both the primary and secondary DCs in the testenv
885 and checks that both return the expected results.
887 print("Checking replication against primary test DC...")
889 # get the replication data from the test DC first
890 while not self.replication_complete():
893 # Check we get all the objects and links we're expecting
894 self.assert_expected_data(all_objects)
895 self.assert_expected_links(expected_links)
897 # switch over the DC state info so we now talk to the peer DC
898 self.set_dc_connection(peer_conn)
899 self.init_test_state()
901 print("Checking replication against secondary test DC...")
903 # check that we get the same information from the 2nd DC
904 while not self.replication_complete():
907 self.assert_expected_data(all_objects)
908 self.assert_expected_links(expected_links)
910 # switch back to using the default connection
911 self.set_dc_connection(self.default_conn)
913 def test_repl_integrity_obj_reanimation(self):
915 Checks receiving links for a re-animated object doesn't lose links.
916 We test this against the peer DC to make sure it doesn't drop links.
919 # This test is a little different in that we're particularly interested
920 # in exercising the replmd client code on the second DC.
921 # First, make sure the peer DC has the base OU, then connect to it (so
922 # we store its inital HWM)
924 peer_conn = DcConnection(self, self.ldb_dc1, self.dnsname_dc1)
926 # create the link source/target objects
927 la_sources = self.create_object_range(0, 100, prefix="la_src")
928 la_targets = self.create_object_range(0, 100, prefix="la_tgt")
930 # store the target object's GUIDs (we need to know these to reanimate them)
933 for dn in la_targets:
934 target_guids.append(self.get_object_guid(dn))
936 # delete the link target
937 for x in range(0, 100):
938 self.ldb_dc2.delete(la_targets[x])
940 # sync the DCs, then disable replication. We want the peer DC to get
941 # all the following changes in a single replication cycle
943 self._disable_all_repl(self.dnsname_dc2)
945 # restore the target objects for the linked attributes again
946 for x in range(0, 100):
947 self.restore_deleted_object(target_guids[x], la_targets[x])
950 for x in range(0, 100):
951 self.modify_object(la_sources[x], "managedBy", la_targets[x])
953 # create some additional filler objects
954 filler = self.create_object_range(0, 100, prefix="filler")
956 # modify the targets so they now come last
957 for x in range(0, 100):
958 self.modify_object(la_targets[x], "displayName", "OU-%d" % x)
960 # the objects should now be sent in the following order:
961 # [la sources + links][filler][la targets]
962 all_objects = la_sources + la_targets + filler
963 expected_links = la_sources
965 # Enable replication again make sure the 2 DCs are back in sync
966 self._enable_all_repl(self.dnsname_dc2)
969 # Get the replication data from each DC in turn.
970 # Check that both give us all the objects and links we're expecting,
971 # i.e. no links were lost
972 self.assert_DCs_replication_is_consistent(peer_conn, all_objects,
975 def test_repl_integrity_cross_partition_links(self):
977 Checks that a cross-partition link to an unknown target object does
978 not result in missing links.
981 # check the peer DC is up-to-date, then connect (storing its HWM)
983 peer_conn = DcConnection(self, self.ldb_dc1, self.dnsname_dc1)
985 # stop replication so the peer gets the following objects in one go
986 self._disable_all_repl(self.dnsname_dc2)
988 # create a link source object in the main NC
989 la_source = "OU=cross_nc_src,%s" % self.ou
990 self.add_object(la_source)
992 # create the link target (a server object) in the config NC
993 rand = random.randint(1, 10000000)
994 la_target = "CN=getncchanges-%d,CN=Servers,CN=Default-First-Site-Name," \
995 "CN=Sites,%s" %(rand, self.config_dn)
996 self.add_object(la_target, objectclass="server")
998 # add a cross-partition link between the two
999 self.modify_object(la_source, "managedBy", la_target)
1001 # First, sync across to the peer the NC containing the link source object
1004 # Now, before the peer has received the partition containing the target
1005 # object, try replicating from the peer. It will only know about half
1006 # of the link at this point, but it should be a valid scenario
1007 self.set_dc_connection(peer_conn)
1009 while not self.replication_complete():
1010 # pretend we've received other link targets out of order and that's
1011 # forced us to use GET_TGT. This checks the peer doesn't fail trying
1012 # to fetch a cross-partition target object that doesn't exist
1013 self.repl_get_next(get_tgt=True)
1015 self.set_dc_connection(self.default_conn)
1016 self.init_test_state()
1018 # Now sync across the partition containing the link target object
1019 self.sync_DCs(nc_dn=self.config_dn)
1020 self._enable_all_repl(self.dnsname_dc2)
1022 # Get the replication data from each DC in turn.
1023 # Check that both return the cross-partition link (note we're not
1024 # checking the config domain NC here for simplicity)
1025 self.assert_DCs_replication_is_consistent(peer_conn,
1026 all_objects=[la_source],
1027 expected_links=[la_source])
1029 # the cross-partition linked attribute has a missing backlink. Check
1030 # that we can still delete it successfully
1031 self.delete_attribute(la_source, "managedBy", la_target)
1034 res = self.test_ldb_dc.search(ldb.Dn(self.ldb_dc1, la_source),
1035 attrs=["managedBy"],
1036 controls=['extended_dn:1:0'],
1037 scope=ldb.SCOPE_BASE)
1038 self.assertFalse("managedBy" in res[0], "%s in DB still has managedBy attribute"
1040 res = self.test_ldb_dc.search(ldb.Dn(self.ldb_dc2, la_source),
1041 attrs=["managedBy"],
1042 controls=['extended_dn:1:0'],
1043 scope=ldb.SCOPE_BASE)
1044 self.assertFalse("managedBy" in res[0], "%s in DB still has managedBy attribute"
1047 # Check receiving a cross-partition link to a deleted target.
1048 # Delete the target and make sure the deletion is sync'd between DCs
1049 target_guid = self.get_object_guid(la_target)
1050 self.test_ldb_dc.delete(la_target)
1051 self.sync_DCs(nc_dn=self.config_dn)
1052 self._disable_all_repl(self.dnsname_dc2)
1054 # re-animate the target
1055 self.restore_deleted_object(target_guid, la_target)
1056 self.modify_object(la_source, "managedBy", la_target)
1058 # now sync the link - because the target is in another partition, the
1059 # peer DC receives a link for a deleted target, which it should accept
1061 res = self.test_ldb_dc.search(ldb.Dn(self.ldb_dc1, la_source),
1062 attrs=["managedBy"],
1063 controls=['extended_dn:1:0'],
1064 scope=ldb.SCOPE_BASE)
1065 self.assertTrue("managedBy" in res[0], "%s in DB missing managedBy attribute"
1068 # cleanup the server object we created in the Configuration partition
1069 self.test_ldb_dc.delete(la_target)
1070 self._enable_all_repl(self.dnsname_dc2)
1072 def test_repl_get_tgt_multivalued_links(self):
1073 """Tests replication with multi-valued link attributes."""
1075 # create the target/source objects and link them together
1076 la_targets = self.create_object_range(0, 500, prefix="la_tgt")
1077 la_source = "CN=la_src,%s" % self.ou
1078 self.add_object(la_source, objectclass="msExchConfigurationContainer")
1080 for tgt in la_targets:
1081 self.modify_object(la_source, "addressBookRoots2", tgt)
1083 filler = self.create_object_range(0, 100, prefix="filler")
1085 # We should receive the objects/links in the following order:
1086 # [500 targets + 1 source][500 links][100 filler]
1087 expected_objects = la_targets + [la_source] + filler
1088 link_only_chunk = False
1090 # First do the replication without needing GET_TGT
1091 while not self.replication_complete():
1092 ctr6 = self.repl_get_next()
1094 if ctr6.object_count == 0 and ctr6.linked_attributes_count != 0:
1095 link_only_chunk = True
1097 # we should receive one chunk that contains only links
1098 self.assertTrue(link_only_chunk,
1099 "Expected to receive a chunk containing only links")
1101 # check we received all the expected objects/links
1102 self.assert_expected_data(expected_objects)
1103 self.assert_expected_links([la_source], link_attr="addressBookRoots2", num_expected=500)
1105 # Do the replication again, forcing the use of GET_TGT this time
1106 self.init_test_state()
1108 for x in range(0, 500):
1109 self.modify_object(la_targets[x], "displayName", "OU-%d" % x)
1111 # The objects/links should get sent in the following order:
1112 # [1 source][500 targets][500 links][100 filler]
1114 while not self.replication_complete():
1115 ctr6 = self.repl_get_next()
1117 self.assertTrue(self.used_get_tgt,
1118 "Test didn't use the GET_TGT flag as expected")
1120 # check we received all the expected objects/links
1121 self.assert_expected_data(expected_objects)
1122 self.assert_expected_links([la_source], link_attr="addressBookRoots2", num_expected=500)
1126 """Helper class to track a connection to another DC"""
1128 def __init__(self, drs_base, ldb_dc, dnsname_dc):
1129 self.ldb_dc = ldb_dc
1130 (self.drs, self.drs_handle) = drs_base._ds_bind(dnsname_dc)
1131 (self.default_hwm, self.default_utdv) = drs_base._get_highest_hwm_utdv(ldb_dc)