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# Blackbox tests for sambadowngradedatabase
#
# Copyright (C) Catalyst IT Ltd. 2019
#
# 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
from samba.tests import BlackboxTestCase
import os
import ldb
import shutil
from subprocess import check_output
from samba.samdb import SamDB
COMMAND = os.path.join(os.environ.get("SRCDIR_ABS"),
"source4/scripting/bin/sambadowngradedatabase")
class DowngradeTestBase(BlackboxTestCase):
"""Test that sambadowngradedatabase downgrades the samba database"""
def setUp(self):
super(DowngradeTestBase, self).setUp()
if not hasattr(self, "backend"):
self.fail("Subclass this class and set 'backend'")
prov_cmd = "samba-tool domain provision " +\
"--domain FOO --realm foo.example.com " +\
"--targetdir {self.tempdir} " +\
"--backend-store {self.backend} " +\
"--host-name downgradetest " +\
"--option=\"vfs objects=fake_acls xattr_tdb\""
prov_cmd = prov_cmd.format(self=self)
self.check_run(prov_cmd, "Provisioning for downgrade")
private_dir = os.path.join(self.tempdir, "private")
self.sam_path = os.path.join(private_dir, "sam.ldb")
self.ldb = ldb.Ldb(self.sam_path, options=["modules:"])
partitions = self.ldb.search(base="@PARTITION",
scope=ldb.SCOPE_BASE,
attrs=["partition"])
partitions = partitions[0]['partition']
partitions = [str(p).split(":")[1] for p in partitions]
self.dbs = [os.path.join(private_dir, p)
for p in partitions]
self.dbs.append(self.sam_path)
def tearDown(self):
shutil.rmtree(os.path.join(self.tempdir, "private"))
shutil.rmtree(os.path.join(self.tempdir, "etc"))
shutil.rmtree(os.path.join(self.tempdir, "state"))
shutil.rmtree(os.path.join(self.tempdir, "bind-dns"))
shutil.rmtree(os.path.join(self.tempdir, "msg.lock"))
os.unlink(os.path.join(self.tempdir, "names.tdb"))
os.unlink(os.path.join(self.tempdir, "gencache.tdb"))
super(DowngradeTestBase, self).tearDown()
# Parse out the comments above each record that ldbdump produces
# containing pack format version and KV level key for each record.
# Return all GUID keys and DN keys (without @attrs), and the set
# of all unique pack formats.
def ldbdump_keys_pack_formats(self):
# Get all comments from all partition dbs
comments = []
for db in self.dbs:
dump = check_output(["bin/ldbdump", "-i", db])
dump = dump.decode("utf-8")
dump = dump.split("\n")
comments += [s for s in dump if s.startswith("#")]
guid_key_tag = "# key: GUID="
guid_keys = {c[len(guid_key_tag):] for c in comments
if c.startswith(guid_key_tag)}
dn_key_tag = "# key: DN="
dn_keys = {c[len(dn_key_tag):] for c in comments
if c.startswith(dn_key_tag)}
# Ignore @ attributes, they are always DN keyed
dn_keys_no_at_attrs = {d for d in dn_keys if not d.startswith("@")}
pack_format_tag = "# pack format: "
pack_formats = {c[len(pack_format_tag):] for c in comments
if c.startswith(pack_format_tag)}
pack_formats = [int(s, 16) for s in pack_formats]
return dn_keys_no_at_attrs, guid_keys, pack_formats
# Get a set of all distinct types in @ATTRIBUTES
def attribute_types(self):
at_attributes = self.ldb.search(base="@ATTRIBUTES",
scope=ldb.SCOPE_BASE,
attrs=["*"])
self.assertEqual(len(at_attributes), 1)
keys = at_attributes[0].keys()
attribute_types = {str(at_attributes[0].get(k)) for k in keys}
return attribute_types
class DowngradeTestTDB(DowngradeTestBase):
backend = 'tdb'
# Check that running sambadowngradedatabase with a TDB backend:
# * Replaces all GUID keys with DN keys
# * Removes ORDERED_INTEGER from @ATTRIBUTES
# * Repacks database with pack format version 1
def test_downgrade_database(self):
type_prefix = "LDB_SYNTAX_"
ordered_int_type = ldb.SYNTAX_ORDERED_INTEGER[len(type_prefix):]
dn_keys, guid_keys, pack_formats = self.ldbdump_keys_pack_formats()
self.assertGreater(len(guid_keys), 20)
self.assertEqual(len(dn_keys), 0)
self.assertTrue(ordered_int_type in self.attribute_types())
self.assertEqual(pack_formats, [ldb.PACKING_FORMAT_V2])
num_guid_keys_before_downgrade = len(guid_keys)
self.check_run("%s -H %s" % (COMMAND, self.sam_path),
msg="Running sambadowngradedatabase")
dn_keys, guid_keys, pack_formats = self.ldbdump_keys_pack_formats()
self.assertEqual(len(guid_keys), 0)
self.assertEqual(len(dn_keys), num_guid_keys_before_downgrade)
self.assertTrue(ordered_int_type not in self.attribute_types())
self.assertEqual(pack_formats, [ldb.PACKING_FORMAT])
class DowngradeTestMDB(DowngradeTestBase):
backend = 'mdb'
# Check that running sambadowngradedatabase with a TDB backend:
# * Does NOT replace GUID keys with DN keys
# * Removes ORDERED_INTEGER from @ATTRIBUTES
# * Repacks database with pack format version 1
def test_undo_guid(self):
type_prefix = "LDB_SYNTAX_"
ordered_int_type = ldb.SYNTAX_ORDERED_INTEGER[len(type_prefix):]
dn_keys, guid_keys, pack_formats = self.ldbdump_keys_pack_formats()
self.assertGreater(len(guid_keys), 20)
self.assertEqual(len(dn_keys), 0)
self.assertTrue(ordered_int_type in self.attribute_types())
self.assertEqual(pack_formats, [ldb.PACKING_FORMAT_V2])
num_guid_keys_before_downgrade = len(guid_keys)
self.check_run("%s -H %s" % (COMMAND, self.sam_path),
msg="Running sambadowngradedatabase")
dn_keys, guid_keys, pack_formats = self.ldbdump_keys_pack_formats()
self.assertEqual(len(guid_keys), num_guid_keys_before_downgrade)
self.assertEqual(len(dn_keys), 0)
self.assertTrue(ordered_int_type not in self.attribute_types())
self.assertEqual(pack_formats, [ldb.PACKING_FORMAT])
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