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# Unix SMB/CIFS implementation. Tests for dsdb_dns module
# Copyright © Catalyst IT 2021
#
# 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 samba.tests import TestCase
from samba import dsdb_dns
import time
def unix2nttime(t):
# here we reimplement unix_to_nt_time from lib/util/time.c
if t == -1:
return t
if t == (1 << 63) - 1:
return (1 << 63) - 1
if t == 0:
return 0
t += 11644473600
t *= 1e7
return int(t)
def unix2dns_timestamp(t):
nt = unix2nttime(t)
if nt < 0:
# because NTTIME is a uint64_t.
nt += 1 << 64
return nt // int(3.6e10)
def timestamp2nttime(ts):
nt = ts * int(3.6e10)
if nt >= 1 << 63:
raise OverflowError("nt time won't fit this")
return nt
class DsdbDnsTestCase(TestCase):
def test_unix_to_dns_timestamp(self):
unixtimes = [1616829393,
1,
0,
-1,
1 << 31 - 1]
for t in unixtimes:
expected = unix2dns_timestamp(t)
result = dsdb_dns.unix_to_dns_timestamp(t)
self.assertEqual(result, expected)
def test_dns_timestamp_to_nt_time(self):
timestamps = [16168393,
1,
0,
(1 << 32) - 1,
(1 << 63) - 1,
int((1 << 63) / 3.6e10),
int((1 << 63) / 3.6e10) + 1, # overflows
]
for t in timestamps:
overflows = False
try:
expected = timestamp2nttime(t)
except OverflowError:
overflows = True
try:
result = dsdb_dns.dns_timestamp_to_nt_time(t)
except ValueError:
self.assertTrue(overflows, f"timestamp {t} should not overflow")
continue
self.assertFalse(overflows, f"timestamp {t} should overflow")
self.assertEqual(result, expected)
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