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|
#!/usr/bin/env python
# -*- coding: utf-8 -*-
#
# Unix SMB/CIFS implementation.
# Copyright (C) Kamen Mazdrashki <kamenim@samba.org> 2011
# Copyright (C) Andrew Bartlett <abartlet@samba.org> 2016
# Copyright (C) Catalyst IT Ltd. 2016
#
# 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/>.
#
from __future__ import print_function
import sys
import time
import os
import ldb
sys.path.insert(0, "bin/python")
import samba.tests
from samba.tests.samba_tool.base import SambaToolCmdTest
from samba import dsdb
from samba.dcerpc import drsuapi, misc, drsblobs, security
from samba.ndr import ndr_unpack, ndr_pack
from samba.drs_utils import drs_DsBind
from samba import gensec
from ldb import (
SCOPE_BASE,
Message,
FLAG_MOD_REPLACE,
)
class DrsBaseTestCase(SambaToolCmdTest):
"""Base class implementation for all DRS python tests.
It is intended to provide common initialization and
and functionality used by all DRS tests in drs/python
test package. For instance, DC1 and DC2 are always used
to pass URLs for DCs to test against"""
def setUp(self):
super(DrsBaseTestCase, self).setUp()
creds = self.get_credentials()
creds.set_gensec_features(creds.get_gensec_features() | gensec.FEATURE_SEAL)
# connect to DCs
url_dc = samba.tests.env_get_var_value("DC1")
(self.ldb_dc1, self.info_dc1) = samba.tests.connect_samdb_ex(url_dc,
ldap_only=True)
url_dc = samba.tests.env_get_var_value("DC2")
(self.ldb_dc2, self.info_dc2) = samba.tests.connect_samdb_ex(url_dc,
ldap_only=True)
self.test_ldb_dc = self.ldb_dc1
# cache some of RootDSE props
self.schema_dn = self.info_dc1["schemaNamingContext"][0]
self.domain_dn = self.info_dc1["defaultNamingContext"][0]
self.config_dn = self.info_dc1["configurationNamingContext"][0]
self.forest_level = int(self.info_dc1["forestFunctionality"][0])
# we will need DCs DNS names for 'samba-tool drs' command
self.dnsname_dc1 = self.info_dc1["dnsHostName"][0]
self.dnsname_dc2 = self.info_dc2["dnsHostName"][0]
# for debugging the test code
self._debug = False
def tearDown(self):
super(DrsBaseTestCase, self).tearDown()
def set_test_ldb_dc(self, ldb_dc):
"""Sets which DC's LDB we perform operations on during the test"""
self.test_ldb_dc = ldb_dc
def _GUID_string(self, guid):
return self.test_ldb_dc.schema_format_value("objectGUID", guid)
def _ldap_schemaUpdateNow(self, sam_db):
rec = {"dn": "",
"schemaUpdateNow": "1"}
m = Message.from_dict(sam_db, rec, FLAG_MOD_REPLACE)
sam_db.modify(m)
def _deleted_objects_dn(self, sam_ldb):
wkdn = "<WKGUID=18E2EA80684F11D2B9AA00C04F79F805,%s>" % self.domain_dn
res = sam_ldb.search(base=wkdn,
scope=SCOPE_BASE,
controls=["show_deleted:1"])
self.assertEquals(len(res), 1)
return str(res[0]["dn"])
def _lost_and_found_dn(self, sam_ldb, nc):
wkdn = "<WKGUID=%s,%s>" % (dsdb.DS_GUID_LOSTANDFOUND_CONTAINER, nc)
res = sam_ldb.search(base=wkdn,
scope=SCOPE_BASE)
self.assertEquals(len(res), 1)
return str(res[0]["dn"])
def _make_obj_name(self, prefix):
return prefix + time.strftime("%s", time.gmtime())
def _samba_tool_cmd_list(self, drs_command):
# make command line credentials string
ccache_name = self.get_creds_ccache_name()
# Tunnel the command line credentials down to the
# subcommand to avoid a new kinit
cmdline_auth = "--krb5-ccache=%s" % ccache_name
# bin/samba-tool drs <drs_command> <cmdline_auth>
return ["drs", drs_command, cmdline_auth]
def _net_drs_replicate(self, DC, fromDC, nc_dn=None, forced=True,
local=False, full_sync=False, single=False):
if nc_dn is None:
nc_dn = self.domain_dn
# make base command line
samba_tool_cmdline = self._samba_tool_cmd_list("replicate")
# bin/samba-tool drs replicate <Dest_DC_NAME> <Src_DC_NAME> <Naming Context>
samba_tool_cmdline += [DC, fromDC, nc_dn]
if forced:
samba_tool_cmdline += ["--sync-forced"]
if local:
samba_tool_cmdline += ["--local"]
if full_sync:
samba_tool_cmdline += ["--full-sync"]
if single:
samba_tool_cmdline += ["--single-object"]
(result, out, err) = self.runsubcmd(*samba_tool_cmdline)
self.assertCmdSuccess(result, out, err)
self.assertEquals(err,"","Shouldn't be any error messages")
def _enable_inbound_repl(self, DC):
# make base command line
samba_tool_cmd = self._samba_tool_cmd_list("options")
# disable replication
samba_tool_cmd += [DC, "--dsa-option=-DISABLE_INBOUND_REPL"]
(result, out, err) = self.runsubcmd(*samba_tool_cmd)
self.assertCmdSuccess(result, out, err)
self.assertEquals(err,"","Shouldn't be any error messages")
def _disable_inbound_repl(self, DC):
# make base command line
samba_tool_cmd = self._samba_tool_cmd_list("options")
# disable replication
samba_tool_cmd += [DC, "--dsa-option=+DISABLE_INBOUND_REPL"]
(result, out, err) = self.runsubcmd(*samba_tool_cmd)
self.assertCmdSuccess(result, out, err)
self.assertEquals(err,"","Shouldn't be any error messages")
def _enable_all_repl(self, DC):
self._enable_inbound_repl(DC)
# make base command line
samba_tool_cmd = self._samba_tool_cmd_list("options")
# enable replication
samba_tool_cmd += [DC, "--dsa-option=-DISABLE_OUTBOUND_REPL"]
(result, out, err) = self.runsubcmd(*samba_tool_cmd)
self.assertCmdSuccess(result, out, err)
self.assertEquals(err,"","Shouldn't be any error messages")
def _disable_all_repl(self, DC):
self._disable_inbound_repl(DC)
# make base command line
samba_tool_cmd = self._samba_tool_cmd_list("options")
# disable replication
samba_tool_cmd += [DC, "--dsa-option=+DISABLE_OUTBOUND_REPL"]
(result, out, err) = self.runsubcmd(*samba_tool_cmd)
self.assertCmdSuccess(result, out, err)
self.assertEquals(err,"","Shouldn't be any error messages")
def _get_highest_hwm_utdv(self, ldb_conn):
res = ldb_conn.search("", scope=ldb.SCOPE_BASE, attrs=["highestCommittedUSN"])
hwm = drsuapi.DsReplicaHighWaterMark()
hwm.tmp_highest_usn = long(res[0]["highestCommittedUSN"][0])
hwm.reserved_usn = 0
hwm.highest_usn = hwm.tmp_highest_usn
utdv = drsuapi.DsReplicaCursorCtrEx()
cursors = []
c1 = drsuapi.DsReplicaCursor()
c1.source_dsa_invocation_id = misc.GUID(ldb_conn.get_invocation_id())
c1.highest_usn = hwm.highest_usn
cursors.append(c1)
utdv.count = len(cursors)
utdv.cursors = cursors
return (hwm, utdv)
def _get_identifier(self, ldb_conn, dn):
res = ldb_conn.search(dn, scope=ldb.SCOPE_BASE,
attrs=["objectGUID", "objectSid"])
id = drsuapi.DsReplicaObjectIdentifier()
id.guid = ndr_unpack(misc.GUID, res[0]['objectGUID'][0])
if "objectSid" in res[0]:
id.sid = ndr_unpack(security.dom_sid, res[0]['objectSid'][0])
id.dn = str(res[0].dn)
return id
def _get_ctr6_links(self, ctr6):
"""
Unpacks the linked attributes from a DsGetNCChanges response
and returns them as a list.
"""
ctr6_links = []
for lidx in range(0, ctr6.linked_attributes_count):
l = ctr6.linked_attributes[lidx]
try:
target = ndr_unpack(drsuapi.DsReplicaObjectIdentifier3,
l.value.blob)
except:
target = ndr_unpack(drsuapi.DsReplicaObjectIdentifier3Binary,
l.value.blob)
al = AbstractLink(l.attid, l.flags,
l.identifier.guid,
target.guid, target.dn)
ctr6_links.append(al)
return ctr6_links
def _get_ctr6_object_guids(self, ctr6):
"""Returns all the object GUIDs in a GetNCChanges response"""
guid_list = []
obj = ctr6.first_object
for i in range(0, ctr6.object_count):
guid_list.append(str(obj.object.identifier.guid))
obj = obj.next_object
return guid_list
def _ctr6_debug(self, ctr6):
"""
Displays basic info contained in a DsGetNCChanges response.
Having this debug code allows us to see the difference in behaviour
between Samba and Windows easier. Turn on the self._debug flag to see it.
"""
if self._debug:
print("------------ recvd CTR6 -------------")
next_object = ctr6.first_object
for i in range(0, ctr6.object_count):
print("Obj %d: %s %s" %(i, next_object.object.identifier.dn[:25],
next_object.object.identifier.guid))
next_object = next_object.next_object
print("Linked Attributes: %d" % ctr6.linked_attributes_count)
for lidx in range(0, ctr6.linked_attributes_count):
l = ctr6.linked_attributes[lidx]
try:
target = ndr_unpack(drsuapi.DsReplicaObjectIdentifier3,
l.value.blob)
except:
target = ndr_unpack(drsuapi.DsReplicaObjectIdentifier3Binary,
l.value.blob)
print("Link Tgt %s... <-- Src %s"
%(target.dn[:25], l.identifier.guid))
state = "Del"
if l.flags & drsuapi.DRSUAPI_DS_LINKED_ATTRIBUTE_FLAG_ACTIVE:
state = "Act"
print(" v%u %s changed %u" %(l.meta_data.version, state,
l.meta_data.originating_change_time))
print("HWM: %d" %(ctr6.new_highwatermark.highest_usn))
print("Tmp HWM: %d" %(ctr6.new_highwatermark.tmp_highest_usn))
print("More data: %d" %(ctr6.more_data))
def _get_replication(self, replica_flags,
drs_error=drsuapi.DRSUAPI_EXOP_ERR_NONE, drs=None, drs_handle=None,
highwatermark=None, uptodateness_vector=None,
more_flags=0, max_objects=133, exop=0,
dest_dsa=drsuapi.DRSUAPI_DS_BIND_GUID_W2K3,
source_dsa=None, invocation_id=None, nc_dn_str=None):
"""
Builds a DsGetNCChanges request based on the information provided
and returns the response received from the DC.
"""
if source_dsa is None:
source_dsa = self.test_ldb_dc.get_ntds_GUID()
if invocation_id is None:
invocation_id = self.test_ldb_dc.get_invocation_id()
if nc_dn_str is None:
nc_dn_str = self.test_ldb_dc.domain_dn()
if highwatermark is None:
if self.default_hwm is None:
(highwatermark, _) = self._get_highest_hwm_utdv(self.test_ldb_dc)
else:
highwatermark = self.default_hwm
if drs is None:
drs = self.drs
if drs_handle is None:
drs_handle = self.drs_handle
req10 = self._getnc_req10(dest_dsa=dest_dsa,
invocation_id=invocation_id,
nc_dn_str=nc_dn_str,
exop=exop,
max_objects=max_objects,
replica_flags=replica_flags,
more_flags=more_flags)
req10.highwatermark = highwatermark
if uptodateness_vector is not None:
uptodateness_vector_v1 = drsuapi.DsReplicaCursorCtrEx()
cursors = []
for i in xrange(0, uptodateness_vector.count):
c = uptodateness_vector.cursors[i]
c1 = drsuapi.DsReplicaCursor()
c1.source_dsa_invocation_id = c.source_dsa_invocation_id
c1.highest_usn = c.highest_usn
cursors.append(c1)
uptodateness_vector_v1.count = len(cursors)
uptodateness_vector_v1.cursors = cursors
req10.uptodateness_vector = uptodateness_vector_v1
(level, ctr) = drs.DsGetNCChanges(drs_handle, 10, req10)
self._ctr6_debug(ctr)
self.assertEqual(level, 6, "expected level 6 response!")
self.assertEqual(ctr.source_dsa_guid, misc.GUID(source_dsa))
self.assertEqual(ctr.source_dsa_invocation_id, misc.GUID(invocation_id))
self.assertEqual(ctr.extended_ret, drs_error)
return ctr
def _check_replication(self, expected_dns, replica_flags, expected_links=[],
drs_error=drsuapi.DRSUAPI_EXOP_ERR_NONE, drs=None, drs_handle=None,
highwatermark=None, uptodateness_vector=None,
more_flags=0, more_data=False,
dn_ordered=True, links_ordered=True,
max_objects=133, exop=0,
dest_dsa=drsuapi.DRSUAPI_DS_BIND_GUID_W2K3,
source_dsa=None, invocation_id=None, nc_dn_str=None,
nc_object_count=0, nc_linked_attributes_count=0):
"""
Makes sure that replication returns the specific error given.
"""
# send a DsGetNCChanges to the DC
ctr6 = self._get_replication(replica_flags,
drs_error, drs, drs_handle,
highwatermark, uptodateness_vector,
more_flags, max_objects, exop, dest_dsa,
source_dsa, invocation_id, nc_dn_str)
# check the response is what we expect
self._check_ctr6(ctr6, expected_dns, expected_links,
nc_object_count=nc_object_count, more_data=more_data,
dn_ordered=dn_ordered)
return (ctr6.new_highwatermark, ctr6.uptodateness_vector)
def _get_ctr6_dn_list(self, ctr6):
"""
Returns the DNs contained in a DsGetNCChanges response.
"""
dn_list = []
next_object = ctr6.first_object
for i in range(0, ctr6.object_count):
dn_list.append(next_object.object.identifier.dn)
next_object = next_object.next_object
self.assertEqual(next_object, None)
return dn_list
def _check_ctr6(self, ctr6, expected_dns=[], expected_links=[],
dn_ordered=True, links_ordered=True,
more_data=False, nc_object_count=0,
nc_linked_attributes_count=0, drs_error=0):
"""
Check that a ctr6 matches the specified parameters.
"""
self.assertEqual(ctr6.object_count, len(expected_dns))
self.assertEqual(ctr6.linked_attributes_count, len(expected_links))
self.assertEqual(ctr6.more_data, more_data)
self.assertEqual(ctr6.nc_object_count, nc_object_count)
self.assertEqual(ctr6.nc_linked_attributes_count, nc_linked_attributes_count)
self.assertEqual(ctr6.drs_error[0], drs_error)
ctr6_dns = self._get_ctr6_dn_list(ctr6)
i = 0
for dn in expected_dns:
# Expect them back in the exact same order as specified.
if dn_ordered:
self.assertNotEqual(ctr6_dns[i], None)
self.assertEqual(ctr6_dns[i], dn)
i = i + 1
# Don't care what order
else:
self.assertTrue(dn in ctr6_dns, "Couldn't find DN '%s' anywhere in ctr6 response." % dn)
# Extract the links from the response
ctr6_links = self._get_ctr6_links(ctr6)
expected_links.sort()
lidx = 0
for el in expected_links:
if links_ordered:
self.assertEqual(el, ctr6_links[lidx])
lidx += 1
else:
self.assertTrue(el in ctr6_links, "Couldn't find link '%s' anywhere in ctr6 response." % el)
def _exop_req8(self, dest_dsa, invocation_id, nc_dn_str, exop,
replica_flags=0, max_objects=0, partial_attribute_set=None,
partial_attribute_set_ex=None, mapping_ctr=None):
req8 = drsuapi.DsGetNCChangesRequest8()
req8.destination_dsa_guid = misc.GUID(dest_dsa) if dest_dsa else misc.GUID()
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 = replica_flags
req8.max_object_count = max_objects
req8.max_ndr_size = 402116
req8.extended_op = exop
req8.fsmo_info = 0
req8.partial_attribute_set = partial_attribute_set
req8.partial_attribute_set_ex = partial_attribute_set_ex
if mapping_ctr:
req8.mapping_ctr = mapping_ctr
else:
req8.mapping_ctr.num_mappings = 0
req8.mapping_ctr.mappings = None
return req8
def _getnc_req10(self, dest_dsa, invocation_id, nc_dn_str, exop,
replica_flags=0, max_objects=0, partial_attribute_set=None,
partial_attribute_set_ex=None, mapping_ctr=None,
more_flags=0):
req10 = drsuapi.DsGetNCChangesRequest10()
req10.destination_dsa_guid = misc.GUID(dest_dsa) if dest_dsa else misc.GUID()
req10.source_dsa_invocation_id = misc.GUID(invocation_id)
req10.naming_context = drsuapi.DsReplicaObjectIdentifier()
req10.naming_context.dn = unicode(nc_dn_str)
req10.highwatermark = drsuapi.DsReplicaHighWaterMark()
req10.highwatermark.tmp_highest_usn = 0
req10.highwatermark.reserved_usn = 0
req10.highwatermark.highest_usn = 0
req10.uptodateness_vector = None
req10.replica_flags = replica_flags
req10.max_object_count = max_objects
req10.max_ndr_size = 402116
req10.extended_op = exop
req10.fsmo_info = 0
req10.partial_attribute_set = partial_attribute_set
req10.partial_attribute_set_ex = partial_attribute_set_ex
if mapping_ctr:
req10.mapping_ctr = mapping_ctr
else:
req10.mapping_ctr.num_mappings = 0
req10.mapping_ctr.mappings = None
req10.more_flags = more_flags
return req10
def _ds_bind(self, server_name, creds=None):
binding_str = "ncacn_ip_tcp:%s[seal]" % server_name
if creds is None:
creds = self.get_credentials()
drs = drsuapi.drsuapi(binding_str, self.get_loadparm(), creds)
(drs_handle, supported_extensions) = drs_DsBind(drs)
return (drs, drs_handle)
def get_partial_attribute_set(self, attids=[drsuapi.DRSUAPI_ATTID_objectClass]):
partial_attribute_set = drsuapi.DsPartialAttributeSet()
partial_attribute_set.attids = attids
partial_attribute_set.num_attids = len(attids)
return partial_attribute_set
class AbstractLink:
def __init__(self, attid, flags, identifier, targetGUID,
targetDN=""):
self.attid = attid
self.flags = flags
self.identifier = str(identifier)
self.selfGUID_blob = ndr_pack(identifier)
self.targetGUID = str(targetGUID)
self.targetGUID_blob = ndr_pack(targetGUID)
self.targetDN = targetDN
def __repr__(self):
return "AbstractLink(0x%08x, 0x%08x, %s, %s)" % (
self.attid, self.flags, self.identifier, self.targetGUID)
def __internal_cmp__(self, other, verbose=False):
"""See CompareLinks() in MS-DRSR section 4.1.10.5.17"""
if not isinstance(other, AbstractLink):
if verbose:
print("AbstractLink.__internal_cmp__(%r, %r) => wrong type" % (self, other))
return NotImplemented
c = cmp(self.selfGUID_blob, other.selfGUID_blob)
if c != 0:
if verbose:
print("AbstractLink.__internal_cmp__(%r, %r) => %d different identifier" % (self, other, c))
return c
c = other.attid - self.attid
if c != 0:
if verbose:
print("AbstractLink.__internal_cmp__(%r, %r) => %d different attid" % (self, other, c))
return c
self_active = self.flags & drsuapi.DRSUAPI_DS_LINKED_ATTRIBUTE_FLAG_ACTIVE
other_active = other.flags & drsuapi.DRSUAPI_DS_LINKED_ATTRIBUTE_FLAG_ACTIVE
c = self_active - other_active
if c != 0:
if verbose:
print("AbstractLink.__internal_cmp__(%r, %r) => %d different FLAG_ACTIVE" % (self, other, c))
return c
c = cmp(self.targetGUID_blob, other.targetGUID_blob)
if c != 0:
if verbose:
print("AbstractLink.__internal_cmp__(%r, %r) => %d different target" % (self, other, c))
return c
c = self.flags - other.flags
if c != 0:
if verbose:
print("AbstractLink.__internal_cmp__(%r, %r) => %d different flags" % (self, other, c))
return c
return 0
def __lt__(self, other):
c = self.__internal_cmp__(other)
if c == NotImplemented:
return NotImplemented
if c < 0:
return True
return False
def __le__(self, other):
c = self.__internal_cmp__(other)
if c == NotImplemented:
return NotImplemented
if c <= 0:
return True
return False
def __eq__(self, other):
c = self.__internal_cmp__(other, verbose=True)
if c == NotImplemented:
return NotImplemented
if c == 0:
return True
return False
def __ne__(self, other):
c = self.__internal_cmp__(other)
if c == NotImplemented:
return NotImplemented
if c != 0:
return True
return False
def __gt__(self, other):
c = self.__internal_cmp__(other)
if c == NotImplemented:
return NotImplemented
if c > 0:
return True
return False
def __ge__(self, other):
c = self.__internal_cmp__(other)
if c == NotImplemented:
return NotImplemented
if c >= 0:
return True
return False
def __hash__(self):
return hash((self.attid, self.flags, self.identifier, self.targetGUID))
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