path: root/source4/dsdb/tests/python/password_lockout.py

#!/usr/bin/env python3
# -*- coding: utf-8 -*-
# This tests the password lockout behavior for AD implementations
#
# Copyright Matthias Dieter Wallnoefer 2010
# Copyright Andrew Bartlett 2013
# Copyright Stefan Metzmacher 2014
#

import optparse
import sys
import base64
import time

sys.path.insert(0, "bin/python")
import samba

from samba.tests.subunitrun import TestProgram, SubunitOptions
from samba.netcmd.main import samba_tool

import samba.getopt as options

from samba.auth import system_session
from samba.credentials import DONT_USE_KERBEROS, MUST_USE_KERBEROS
from ldb import SCOPE_BASE, LdbError
from ldb import ERR_CONSTRAINT_VIOLATION
from ldb import ERR_INVALID_CREDENTIALS
from ldb import Message, MessageElement, Dn
from ldb import FLAG_MOD_REPLACE
from samba import dsdb
from samba.samdb import SamDB
from samba.tests import delete_force
from samba.dcerpc import security, samr
from samba.tests.pso import PasswordSettings
from samba.net import Net
from samba import NTSTATUSError, ntstatus
import ctypes

parser = optparse.OptionParser("password_lockout.py [options] <host>")
sambaopts = options.SambaOptions(parser)
parser.add_option_group(sambaopts)
parser.add_option_group(options.VersionOptions(parser))
# use command line creds if available
credopts = options.CredentialsOptions(parser)
parser.add_option_group(credopts)
subunitopts = SubunitOptions(parser)
parser.add_option_group(subunitopts)
opts, args = parser.parse_args()

if len(args) < 1:
    parser.print_usage()
    sys.exit(1)

host = args[0]

lp = sambaopts.get_loadparm()
global_creds = credopts.get_credentials(lp)

import password_lockout_base

#
# Tests start here
#


class PasswordTests(password_lockout_base.BasePasswordTestCase):
    def setUp(self):
        self.host = host
        self.host_url = "ldap://%s" % host
        self.host_url_ldaps = "ldaps://%s" % host
        self.lp = lp
        self.global_creds = global_creds
        self.ldb = SamDB(url=self.host_url, session_info=system_session(self.lp),
                         credentials=self.global_creds, lp=self.lp)
        super(PasswordTests, self).setUp()

        self.lockout2krb5_creds = self.insta_creds(self.template_creds,
                                                   username="lockout2krb5",
                                                   userpass="thatsAcomplPASS0",
                                                   kerberos_state=MUST_USE_KERBEROS)
        self._readd_user(self.lockout2krb5_creds,
                         lockOutObservationWindow=self.lockout_observation_window)
        self.lockout2krb5_ldb = SamDB(url=self.host_url,
                                      credentials=self.lockout2krb5_creds,
                                      lp=lp)

        self.lockout2ntlm_creds = self.insta_creds(self.template_creds,
                                                   username="lockout2ntlm",
                                                   userpass="thatsAcomplPASS0",
                                                   kerberos_state=DONT_USE_KERBEROS)
        self._readd_user(self.lockout2ntlm_creds,
                         lockOutObservationWindow=self.lockout_observation_window)
        self.lockout2ntlm_ldb = SamDB(url=self.host_url,
                                      credentials=self.lockout2ntlm_creds,
                                      lp=lp)


    def use_pso_lockout_settings(self, creds):

        # create a PSO with the lockout settings the test cases normally expect
        #
        # Some test cases sleep() for self.account_lockout_duration
        pso = PasswordSettings("lockout-PSO", self.ldb, lockout_attempts=3,
                               lockout_duration=self.account_lockout_duration)
        self.addCleanup(self.ldb.delete, pso.dn)

        userdn = "cn=%s,cn=users,%s" % (creds.get_username(), self.base_dn)
        pso.apply_to(userdn)

        # update the global lockout settings to be wildly different to what
        # the test cases normally expect
        self.update_lockout_settings(threshold=10, duration=600,
                                     observation_window=600)

    def _reset_samr(self, res):

        # Now reset the lockout, by removing ACB_AUTOLOCK (which removes the lock, despite being a generated attribute)
        samr_user = self._open_samr_user(res)
        acb_info = self.samr.QueryUserInfo(samr_user, 16)
        acb_info.acct_flags &= ~samr.ACB_AUTOLOCK
        self.samr.SetUserInfo(samr_user, 16, acb_info)
        self.samr.Close(samr_user)


class PasswordTestsWithoutSleep(PasswordTests):
    def setUp(self):
        # The tests in this class do not sleep, so we can have a
        # longer window and not flap on slower hosts
        self.account_lockout_duration = 30
        self.lockout_observation_window = 30
        super(PasswordTestsWithoutSleep, self).setUp()

    def _reset_ldap_lockoutTime(self, res):
        self.ldb.modify_ldif("""
dn: """ + str(res[0].dn) + """
changetype: modify
replace: lockoutTime
lockoutTime: 0
""")

    def _reset_samba_tool(self, res):
        username = res[0]["sAMAccountName"][0]

        result = samba_tool('user', 'unlock', username,
                            "-H%s" % self.host_url,
                            "-U%s%%%s" % (global_creds.get_username(),
                                          global_creds.get_password()))
        self.assertEqual(result, None)

    def _reset_ldap_userAccountControl(self, res):
        self.assertIn("userAccountControl", res[0])
        self.assertIn("msDS-User-Account-Control-Computed", res[0])

        uac = int(res[0]["userAccountControl"][0])
        uacc = int(res[0]["msDS-User-Account-Control-Computed"][0])

        uac |= uacc
        uac = uac & ~dsdb.UF_LOCKOUT

        self.ldb.modify_ldif("""
dn: """ + str(res[0].dn) + """
changetype: modify
replace: userAccountControl
userAccountControl: %d
""" % uac)

    def _reset_by_method(self, res, method):
        if method == "ldap_userAccountControl":
            self._reset_ldap_userAccountControl(res)
        elif method == "ldap_lockoutTime":
            self._reset_ldap_lockoutTime(res)
        elif method == "samr":
            self._reset_samr(res)
        elif method == "samba-tool":
            self._reset_samba_tool(res)
        else:
            self.fail("Invalid reset method[%s]" % method)

    def _test_userPassword_lockout_with_clear_change(self, creds, other_ldb, method,
                                                     initial_lastlogon_relation=None):
        """
        Tests user lockout behaviour when we try to change the user's password
        but specify an incorrect old-password. The method parameter specifies
        how to reset the locked out account (e.g. by resetting lockoutTime)
        """
        # Notice: This works only against Windows if "dSHeuristics" has been set
        # properly
        username = creds.get_username()
        userpass = creds.get_password()
        userdn = "cn=%s,cn=users,%s" % (username, self.base_dn)

        use_kerberos = creds.get_kerberos_state()
        if use_kerberos == MUST_USE_KERBEROS:
            logoncount_relation = 'greater'
            lastlogon_relation = 'greater'
            self.debug("Performs a password cleartext change operation on 'userPassword' using Kerberos")
        else:
            logoncount_relation = 'equal'
            lastlogon_relation = 'equal'
            self.debug("Performs a password cleartext change operation on 'userPassword' using NTLMSSP")

        if initial_lastlogon_relation is not None:
            lastlogon_relation = initial_lastlogon_relation

        res = self._check_account(userdn,
                                  badPwdCount=0,
                                  badPasswordTime=("greater", 0),
                                  logonCount=(logoncount_relation, 0),
                                  lastLogon=(lastlogon_relation, 0),
                                  lastLogonTimestamp=('greater', 0),
                                  userAccountControl=dsdb.UF_NORMAL_ACCOUNT,
                                  msDSUserAccountControlComputed=0)
        badPasswordTime = int(res[0]["badPasswordTime"][0])
        logonCount = int(res[0]["logonCount"][0])
        lastLogon = int(res[0]["lastLogon"][0])
        lastLogonTimestamp = int(res[0]["lastLogonTimestamp"][0])
        if lastlogon_relation == 'greater':
            self.assertGreater(lastLogon, badPasswordTime)
            self.assertGreaterEqual(lastLogon, lastLogonTimestamp)

        # Change password on a connection as another user

        # Wrong old password
        try:
            other_ldb.modify_ldif("""
dn: """ + userdn + """
changetype: modify
delete: userPassword
userPassword: thatsAcomplPASS1x
add: userPassword
userPassword: thatsAcomplPASS2
""")
            self.fail()
        except LdbError as e:
            (num, msg) = e.args
            self.assertEqual(num, ERR_CONSTRAINT_VIOLATION)
            self.assertIn('00000056', msg)

        res = self._check_account(userdn,
                                  badPwdCount=1,
                                  badPasswordTime=("greater", badPasswordTime),
                                  logonCount=logonCount,
                                  lastLogon=lastLogon,
                                  lastLogonTimestamp=lastLogonTimestamp,
                                  userAccountControl=dsdb.UF_NORMAL_ACCOUNT,
                                  msDSUserAccountControlComputed=0)
        badPasswordTime = int(res[0]["badPasswordTime"][0])

        # Correct old password
        other_ldb.modify_ldif("""
dn: """ + userdn + """
changetype: modify
delete: userPassword
userPassword: """ + userpass + """
add: userPassword
userPassword: thatsAcomplPASS2
""")

        res = self._check_account(userdn,
                                  badPwdCount=1,
                                  badPasswordTime=badPasswordTime,
                                  logonCount=logonCount,
                                  lastLogon=lastLogon,
                                  lastLogonTimestamp=lastLogonTimestamp,
                                  userAccountControl=dsdb.UF_NORMAL_ACCOUNT,
                                  msDSUserAccountControlComputed=0)

        # Wrong old password
        try:
            other_ldb.modify_ldif("""
dn: """ + userdn + """
changetype: modify
delete: userPassword
userPassword: thatsAcomplPASS1x
add: userPassword
userPassword: thatsAcomplPASS2
""")
            self.fail()
        except LdbError as e1:
            (num, msg) = e1.args
            self.assertEqual(num, ERR_CONSTRAINT_VIOLATION)
            self.assertIn('00000056', msg)

        res = self._check_account(userdn,
                                  badPwdCount=2,
                                  badPasswordTime=("greater", badPasswordTime),
                                  logonCount=logonCount,
                                  lastLogon=lastLogon,
                                  lastLogonTimestamp=lastLogonTimestamp,
                                  userAccountControl=dsdb.UF_NORMAL_ACCOUNT,
                                  msDSUserAccountControlComputed=0)
        badPasswordTime = int(res[0]["badPasswordTime"][0])

        self.debug("two failed password change")

        # Wrong old password
        try:
            other_ldb.modify_ldif("""
dn: """ + userdn + """
changetype: modify
delete: userPassword
userPassword: thatsAcomplPASS1x
add: userPassword
userPassword: thatsAcomplPASS2
""")
            self.fail()
        except LdbError as e2:
            (num, msg) = e2.args
            self.assertEqual(num, ERR_CONSTRAINT_VIOLATION)
            self.assertIn('00000056', msg)

        res = self._check_account(userdn,
                                  badPwdCount=3,
                                  badPasswordTime=("greater", badPasswordTime),
                                  logonCount=logonCount,
                                  lastLogon=lastLogon,
                                  lastLogonTimestamp=lastLogonTimestamp,
                                  lockoutTime=("greater", badPasswordTime),
                                  userAccountControl=dsdb.UF_NORMAL_ACCOUNT,
                                  msDSUserAccountControlComputed=dsdb.UF_LOCKOUT)
        badPasswordTime = int(res[0]["badPasswordTime"][0])
        lockoutTime = int(res[0]["lockoutTime"][0])

        # Wrong old password
        try:
            other_ldb.modify_ldif("""
dn: """ + userdn + """
changetype: modify
delete: userPassword
userPassword: thatsAcomplPASS1x
add: userPassword
userPassword: thatsAcomplPASS2
""")
            self.fail()
        except LdbError as e3:
            (num, msg) = e3.args
            self.assertEqual(num, ERR_CONSTRAINT_VIOLATION)
            self.assertIn('00000775', msg)

        res = self._check_account(userdn,
                                  badPwdCount=3,
                                  badPasswordTime=badPasswordTime,
                                  logonCount=logonCount,
                                  lastLogon=lastLogon,
                                  lastLogonTimestamp=lastLogonTimestamp,
                                  lockoutTime=lockoutTime,
                                  userAccountControl=dsdb.UF_NORMAL_ACCOUNT,
                                  msDSUserAccountControlComputed=dsdb.UF_LOCKOUT)

        # Wrong old password
        try:
            other_ldb.modify_ldif("""
dn: """ + userdn + """
changetype: modify
delete: userPassword
userPassword: thatsAcomplPASS1x
add: userPassword
userPassword: thatsAcomplPASS2
""")
            self.fail()
        except LdbError as e4:
            (num, msg) = e4.args
            self.assertEqual(num, ERR_CONSTRAINT_VIOLATION)
            self.assertIn('00000775', msg)

        res = self._check_account(userdn,
                                  badPwdCount=3,
                                  badPasswordTime=badPasswordTime,
                                  logonCount=logonCount,
                                  lockoutTime=lockoutTime,
                                  lastLogon=lastLogon,
                                  lastLogonTimestamp=lastLogonTimestamp,
                                  userAccountControl=dsdb.UF_NORMAL_ACCOUNT,
                                  msDSUserAccountControlComputed=dsdb.UF_LOCKOUT)

        try:
            # Correct old password
            other_ldb.modify_ldif("""
dn: """ + userdn + """
changetype: modify
delete: userPassword
userPassword: thatsAcomplPASS2
add: userPassword
userPassword: thatsAcomplPASS2x
""")
            self.fail()
        except LdbError as e5:
            (num, msg) = e5.args
            self.assertEqual(num, ERR_CONSTRAINT_VIOLATION)
            self.assertIn('00000775', msg)

        res = self._check_account(userdn,
                                  badPwdCount=3,
                                  badPasswordTime=badPasswordTime,
                                  logonCount=logonCount,
                                  lastLogon=lastLogon,
                                  lastLogonTimestamp=lastLogonTimestamp,
                                  lockoutTime=lockoutTime,
                                  userAccountControl=dsdb.UF_NORMAL_ACCOUNT,
                                  msDSUserAccountControlComputed=dsdb.UF_LOCKOUT)

        # Now reset the password, which does NOT change the lockout!
        self.ldb.modify_ldif("""
dn: """ + userdn + """
changetype: modify
replace: userPassword
userPassword: thatsAcomplPASS2
""")

        res = self._check_account(userdn,
                                  badPwdCount=3,
                                  badPasswordTime=badPasswordTime,
                                  logonCount=logonCount,
                                  lastLogon=lastLogon,
                                  lastLogonTimestamp=lastLogonTimestamp,
                                  lockoutTime=lockoutTime,
                                  userAccountControl=dsdb.UF_NORMAL_ACCOUNT,
                                  msDSUserAccountControlComputed=dsdb.UF_LOCKOUT)

        try:
            # Correct old password
            other_ldb.modify_ldif("""
dn: """ + userdn + """
changetype: modify
delete: userPassword
userPassword: thatsAcomplPASS2
add: userPassword
userPassword: thatsAcomplPASS2x
""")
            self.fail()
        except LdbError as e6:
            (num, msg) = e6.args
            self.assertEqual(num, ERR_CONSTRAINT_VIOLATION)
            self.assertIn('00000775', msg)

        res = self._check_account(userdn,
                                  badPwdCount=3,
                                  badPasswordTime=badPasswordTime,
                                  logonCount=logonCount,
                                  lastLogon=lastLogon,
                                  lastLogonTimestamp=lastLogonTimestamp,
                                  lockoutTime=lockoutTime,
                                  userAccountControl=dsdb.UF_NORMAL_ACCOUNT,
                                  msDSUserAccountControlComputed=dsdb.UF_LOCKOUT)

        m = Message()
        m.dn = Dn(self.ldb, userdn)
        m["userAccountControl"] = MessageElement(
            str(dsdb.UF_LOCKOUT),
          FLAG_MOD_REPLACE, "userAccountControl")

        self.ldb.modify(m)

        # This shows that setting the UF_LOCKOUT flag alone makes no difference
        res = self._check_account(userdn,
                                  badPwdCount=3,
                                  badPasswordTime=badPasswordTime,
                                  logonCount=logonCount,
                                  lastLogon=lastLogon,
                                  lastLogonTimestamp=lastLogonTimestamp,
                                  lockoutTime=lockoutTime,
                                  userAccountControl=dsdb.UF_NORMAL_ACCOUNT,
                                  msDSUserAccountControlComputed=dsdb.UF_LOCKOUT)

        # This shows that setting the UF_LOCKOUT flag makes no difference
        try:
            # Correct old password
            other_ldb.modify_ldif("""
dn: """ + userdn + """
changetype: modify
delete: unicodePwd
unicodePwd:: """ + base64.b64encode("\"thatsAcomplPASS2\"".encode('utf-16-le')).decode('utf8') + """
add: unicodePwd
unicodePwd:: """ + base64.b64encode("\"thatsAcomplPASS2x\"".encode('utf-16-le')).decode('utf8') + """
""")
            self.fail()
        except LdbError as e7:
            (num, msg) = e7.args
            self.assertEqual(num, ERR_CONSTRAINT_VIOLATION)
            self.assertIn('00000775', msg)

        res = self._check_account(userdn,
                                  badPwdCount=3,
                                  badPasswordTime=badPasswordTime,
                                  logonCount=logonCount,
                                  lockoutTime=lockoutTime,
                                  lastLogon=lastLogon,
                                  lastLogonTimestamp=lastLogonTimestamp,
                                  userAccountControl=dsdb.UF_NORMAL_ACCOUNT,
                                  msDSUserAccountControlComputed=dsdb.UF_LOCKOUT)

        self._reset_by_method(res, method)

        # Here bad password counts are reset without logon success.
        res = self._check_account(userdn,
                                  badPwdCount=0,
                                  badPasswordTime=badPasswordTime,
                                  logonCount=logonCount,
                                  lockoutTime=0,
                                  lastLogon=lastLogon,
                                  lastLogonTimestamp=lastLogonTimestamp,
                                  userAccountControl=dsdb.UF_NORMAL_ACCOUNT,
                                  msDSUserAccountControlComputed=0)

        # The correct password after doing the unlock

        other_ldb.modify_ldif("""
dn: """ + userdn + """
changetype: modify
delete: unicodePwd
unicodePwd:: """ + base64.b64encode("\"thatsAcomplPASS2\"".encode('utf-16-le')).decode('utf8') + """
add: unicodePwd
unicodePwd:: """ + base64.b64encode("\"thatsAcomplPASS2x\"".encode('utf-16-le')).decode('utf8') + """
""")
        userpass = "thatsAcomplPASS2x"
        creds.set_password(userpass)

        res = self._check_account(userdn,
                                  badPwdCount=0,
                                  badPasswordTime=badPasswordTime,
                                  logonCount=logonCount,
                                  lockoutTime=0,
                                  lastLogon=lastLogon,
                                  lastLogonTimestamp=lastLogonTimestamp,
                                  userAccountControl=dsdb.UF_NORMAL_ACCOUNT,
                                  msDSUserAccountControlComputed=0)

        # Wrong old password
        try:
            other_ldb.modify_ldif("""
dn: """ + userdn + """
changetype: modify
delete: userPassword
userPassword: thatsAcomplPASS1xyz
add: userPassword
userPassword: thatsAcomplPASS2XYZ
""")
            self.fail()
        except LdbError as e8:
            (num, msg) = e8.args
            self.assertEqual(num, ERR_CONSTRAINT_VIOLATION)
            self.assertIn('00000056', msg)

        res = self._check_account(userdn,
                                  badPwdCount=1,
                                  badPasswordTime=("greater", badPasswordTime),
                                  logonCount=logonCount,
                                  lockoutTime=0,
                                  lastLogon=lastLogon,
                                  lastLogonTimestamp=lastLogonTimestamp,
                                  userAccountControl=dsdb.UF_NORMAL_ACCOUNT,
                                  msDSUserAccountControlComputed=0)
        badPasswordTime = int(res[0]["badPasswordTime"][0])

        # Wrong old password
        try:
            other_ldb.modify_ldif("""
dn: """ + userdn + """
changetype: modify
delete: userPassword
userPassword: thatsAcomplPASS1xyz
add: userPassword
userPassword: thatsAcomplPASS2XYZ
""")
            self.fail()
        except LdbError as e9:
            (num, msg) = e9.args
            self.assertEqual(num, ERR_CONSTRAINT_VIOLATION)
            self.assertIn('00000056', msg)

        res = self._check_account(userdn,
                                  badPwdCount=2,
                                  badPasswordTime=("greater", badPasswordTime),
                                  logonCount=logonCount,
                                  lockoutTime=0,
                                  lastLogon=lastLogon,
                                  lastLogonTimestamp=lastLogonTimestamp,
                                  userAccountControl=dsdb.UF_NORMAL_ACCOUNT,
                                  msDSUserAccountControlComputed=0)
        badPasswordTime = int(res[0]["badPasswordTime"][0])

        self._reset_ldap_lockoutTime(res)

        res = self._check_account(userdn,
                                  badPwdCount=0,
                                  badPasswordTime=badPasswordTime,
                                  logonCount=logonCount,
                                  lastLogon=lastLogon,
                                  lastLogonTimestamp=lastLogonTimestamp,
                                  lockoutTime=0,
                                  userAccountControl=dsdb.UF_NORMAL_ACCOUNT,
                                  msDSUserAccountControlComputed=0)

    # The following test lockout behaviour when modifying a user's password
    # and specifying an invalid old password. There are variants for both
    # NTLM and kerberos user authentication. As well as that, there are 3 ways
    # to reset the locked out account: by clearing the lockout bit for
    # userAccountControl (via LDAP), resetting it via SAMR, and by resetting
    # the lockoutTime.
    def test_userPassword_lockout_with_clear_change_krb5_ldap_userAccountControl(self):
        self._test_userPassword_lockout_with_clear_change(self.lockout1krb5_creds,
                                                          self.lockout2krb5_ldb,
                                                          "ldap_userAccountControl")

    def test_userPassword_lockout_with_clear_change_krb5_ldap_lockoutTime(self):
        self._test_userPassword_lockout_with_clear_change(self.lockout1krb5_creds,
                                                          self.lockout2krb5_ldb,
                                                          "ldap_lockoutTime")

    def test_userPassword_lockout_with_clear_change_krb5_samr(self):
        self._test_userPassword_lockout_with_clear_change(self.lockout1krb5_creds,
                                                          self.lockout2krb5_ldb,
                                                          "samr")

    def test_userPassword_lockout_with_clear_change_ntlm_ldap_userAccountControl(self):
        self._test_userPassword_lockout_with_clear_change(self.lockout1ntlm_creds,
                                                          self.lockout2ntlm_ldb,
                                                          "ldap_userAccountControl",
                                                          initial_lastlogon_relation='greater')

    def test_userPassword_lockout_with_clear_change_ntlm_ldap_lockoutTime(self):
        self._test_userPassword_lockout_with_clear_change(self.lockout1ntlm_creds,
                                                          self.lockout2ntlm_ldb,
                                                          "ldap_lockoutTime",
                                                          initial_lastlogon_relation='greater')

    def test_userPassword_lockout_with_clear_change_ntlm_samr(self):
        self._test_userPassword_lockout_with_clear_change(self.lockout1ntlm_creds,
                                                          self.lockout2ntlm_ldb,
                                                          "samr",
                                                          initial_lastlogon_relation='greater')

    # For PSOs, just test a selection of the above combinations
    def test_pso_userPassword_lockout_with_clear_change_krb5_ldap_userAccountControl(self):
        self.use_pso_lockout_settings(self.lockout1krb5_creds)
        self._test_userPassword_lockout_with_clear_change(self.lockout1krb5_creds,
                                                          self.lockout2krb5_ldb,
                                                          "ldap_userAccountControl")

    def test_pso_userPassword_lockout_with_clear_change_ntlm_ldap_lockoutTime(self):
        self.use_pso_lockout_settings(self.lockout1ntlm_creds)
        self._test_userPassword_lockout_with_clear_change(self.lockout1ntlm_creds,
                                                          self.lockout2ntlm_ldb,
                                                          "ldap_lockoutTime",
                                                          initial_lastlogon_relation='greater')

    def test_pso_userPassword_lockout_with_clear_change_ntlm_samr(self):
        self.use_pso_lockout_settings(self.lockout1ntlm_creds)
        self._test_userPassword_lockout_with_clear_change(self.lockout1ntlm_creds,
                                                          self.lockout2ntlm_ldb,
                                                          "samr",
                                                          initial_lastlogon_relation='greater')

    # just test "samba-tool user unlock" command once
    def test_userPassword_lockout_with_clear_change_krb5_ldap_samba_tool(self):
        self._test_userPassword_lockout_with_clear_change(self.lockout1krb5_creds,
                                                          self.lockout2krb5_ldb,
                                                          "samba-tool")

    def test_multiple_logon_krb5(self):
        self._test_multiple_logon(self.lockout1krb5_creds)

    def test_multiple_logon_ntlm(self):
        self._test_multiple_logon(self.lockout1ntlm_creds)

    def _test_samr_password_change(self, creds, other_creds, lockout_threshold=3):
        """Tests user lockout by using bad password in SAMR password_change"""

        # create a connection for SAMR using another user's credentials
        lp = self.get_loadparm()
        net = Net(other_creds, lp, server=self.host)

        # work out the initial account values for this user
        username = creds.get_username()
        userdn = "cn=%s,cn=users,%s" % (username, self.base_dn)
        res = self._check_account(userdn,
                                  badPwdCount=0,
                                  badPasswordTime=("greater", 0),
                                  badPwdCountOnly=True)
        badPasswordTime = int(res[0]["badPasswordTime"][0])
        logonCount = int(res[0]["logonCount"][0])
        lastLogon = int(res[0]["lastLogon"][0])
        lastLogonTimestamp = int(res[0]["lastLogonTimestamp"][0])

        # prove we can change the user password (using the correct password)
        new_password = "thatsAcomplPASS2"
        net.change_password(newpassword=new_password,
                            username=username,
                            oldpassword=creds.get_password())
        creds.set_password(new_password)

        # try entering 'x' many bad passwords in a row to lock the user out
        new_password = "thatsAcomplPASS3"
        for i in range(lockout_threshold):
            badPwdCount = i + 1
            try:
                self.debug("Trying bad password, attempt #%u" % badPwdCount)
                net.change_password(newpassword=new_password,
                                    username=creds.get_username(),
                                    oldpassword="bad-password")
                self.fail("Invalid SAMR change_password accepted")
            except NTSTATUSError as e:
                enum = ctypes.c_uint32(e.args[0]).value
                self.assertEqual(enum, ntstatus.NT_STATUS_WRONG_PASSWORD)

            # check the status of the account is updated after each bad attempt
            account_flags = 0
            lockoutTime = None
            if badPwdCount >= lockout_threshold:
                account_flags = dsdb.UF_LOCKOUT
                lockoutTime = ("greater", badPasswordTime)

            res = self._check_account(userdn,
                                      badPwdCount=badPwdCount,
                                      badPasswordTime=("greater", badPasswordTime),
                                      logonCount=logonCount,
                                      lastLogon=lastLogon,
                                      lastLogonTimestamp=lastLogonTimestamp,
                                      lockoutTime=lockoutTime,
                                      userAccountControl=dsdb.UF_NORMAL_ACCOUNT,
                                      msDSUserAccountControlComputed=account_flags)
            badPasswordTime = int(res[0]["badPasswordTime"][0])

        # the user is now locked out
        lockoutTime = int(res[0]["lockoutTime"][0])

        # check the user remains locked out regardless of whether they use a
        # good or a bad password now
        for password in (creds.get_password(), "bad-password"):
            try:
                self.debug("Trying password %s" % password)
                net.change_password(newpassword=new_password,
                                    username=creds.get_username(),
                                    oldpassword=password)
                self.fail("Invalid SAMR change_password accepted")
            except NTSTATUSError as e:
                enum = ctypes.c_uint32(e.args[0]).value
                self.assertEqual(enum, ntstatus.NT_STATUS_ACCOUNT_LOCKED_OUT)

            res = self._check_account(userdn,
                                      badPwdCount=lockout_threshold,
                                      badPasswordTime=badPasswordTime,
                                      logonCount=logonCount,
                                      lastLogon=lastLogon,
                                      lastLogonTimestamp=lastLogonTimestamp,
                                      lockoutTime=lockoutTime,
                                      userAccountControl=dsdb.UF_NORMAL_ACCOUNT,
                                      msDSUserAccountControlComputed=dsdb.UF_LOCKOUT)

        # reset the user account lockout
        self._reset_samr(res)

        # check bad password counts are reset
        res = self._check_account(userdn,
                                  badPwdCount=0,
                                  badPasswordTime=badPasswordTime,
                                  logonCount=logonCount,
                                  lockoutTime=0,
                                  lastLogon=lastLogon,
                                  lastLogonTimestamp=lastLogonTimestamp,
                                  userAccountControl=dsdb.UF_NORMAL_ACCOUNT,
                                  msDSUserAccountControlComputed=0)

        # check we can change the user password successfully now
        net.change_password(newpassword=new_password,
                            username=username,
                            oldpassword=creds.get_password())
        creds.set_password(new_password)

    def test_samr_change_password(self):
        self._test_samr_password_change(self.lockout1ntlm_creds,
                                        other_creds=self.lockout2ntlm_creds)

    # same as above, but use a PSO to enforce the lockout
    def test_pso_samr_change_password(self):
        self.use_pso_lockout_settings(self.lockout1ntlm_creds)
        self._test_samr_password_change(self.lockout1ntlm_creds,
                                        other_creds=self.lockout2ntlm_creds)

    def test_ntlm_lockout_protected(self):
        creds = self.lockout1ntlm_creds
        self.assertEqual(DONT_USE_KERBEROS, creds.get_kerberos_state())

        # Work out the initial account values for this user.
        username = creds.get_username()
        userdn = f'cn={username},cn=users,{self.base_dn}'
        res = self._check_account(userdn,
                                  badPwdCount=0,
                                  badPasswordTime=('greater', 0),
                                  badPwdCountOnly=True)
        badPasswordTime = int(res[0]['badPasswordTime'][0])
        logonCount = int(res[0]['logonCount'][0])
        lastLogon = int(res[0]['lastLogon'][0])
        lastLogonTimestamp = int(res[0]['lastLogonTimestamp'][0])

        # Add the user to the Protected Users group.

        # Search for the Protected Users group.
        group_dn = Dn(self.ldb,
                      f'<SID={self.ldb.get_domain_sid()}-'
                      f'{security.DOMAIN_RID_PROTECTED_USERS}>')
        try:
            group_res = self.ldb.search(base=group_dn,
                                        scope=SCOPE_BASE,
                                        attrs=['member'])
        except LdbError as err:
            self.fail(err)

        orig_msg = group_res[0]

        # Add the user to the list of members.
        members = list(orig_msg.get('member', ()))
        self.assertNotIn(userdn, members, 'account already in Protected Users')
        members.append(userdn)

        m = Message(group_dn)
        m['member'] = MessageElement(members,
                                     FLAG_MOD_REPLACE,
                                     'member')
        cleanup = self.ldb.msg_diff(m, orig_msg)
        self.ldb.modify(m)

        password = creds.get_password()
        creds.set_password('wrong_password')

        lockout_threshold = 5

        lp = self.get_loadparm()
        server = f'ldap://{self.ldb.host_dns_name()}'

        for _ in range(lockout_threshold):
            with self.assertRaises(LdbError) as err:
                SamDB(url=server,
                      credentials=creds,
                      lp=lp)

            num, _ = err.exception.args
            self.assertEqual(ERR_INVALID_CREDENTIALS, num)

            res = self._check_account(
                userdn,
                badPwdCount=0,
                badPasswordTime=badPasswordTime,
                logonCount=logonCount,
                lastLogon=lastLogon,
                lastLogonTimestamp=lastLogonTimestamp,
                lockoutTime=None,
                userAccountControl=dsdb.UF_NORMAL_ACCOUNT,
                msDSUserAccountControlComputed=0)

        # The user should not be locked out.
        self.assertNotIn('lockoutTime', res[0],
                         'account unexpectedly locked out')

        # Move the account out of 'Protected Users'.
        self.ldb.modify(cleanup)

        # The account should not be locked out.
        creds.set_password(password)

        try:
            SamDB(url=server,
                  credentials=creds,
                  lp=lp)
        except LdbError:
            self.fail('account unexpectedly locked out')

    def test_samr_change_password_protected(self):
        """Tests the SAMR password change method for Protected Users"""

        creds = self.lockout1ntlm_creds
        other_creds = self.lockout2ntlm_creds
        lockout_threshold = 5

        # Create a connection for SAMR using another user's credentials.
        lp = self.get_loadparm()
        net = Net(other_creds, lp, server=self.host)

        # Work out the initial account values for this user.
        username = creds.get_username()
        userdn = f'cn={username},cn=users,{self.base_dn}'
        res = self._check_account(userdn,
                                  badPwdCount=0,
                                  badPasswordTime=('greater', 0),
                                  badPwdCountOnly=True)
        badPasswordTime = int(res[0]['badPasswordTime'][0])
        logonCount = int(res[0]['logonCount'][0])
        lastLogon = int(res[0]['lastLogon'][0])
        lastLogonTimestamp = int(res[0]['lastLogonTimestamp'][0])

        # prove we can change the user password (using the correct password)
        new_password = 'thatsAcomplPASS1'
        net.change_password(newpassword=new_password,
                            username=username,
                            oldpassword=creds.get_password())
        creds.set_password(new_password)

        # Add the user to the Protected Users group.

        # Search for the Protected Users group.
        group_dn = Dn(self.ldb,
                      f'<SID={self.ldb.get_domain_sid()}-'
                      f'{security.DOMAIN_RID_PROTECTED_USERS}>')
        try:
            group_res = self.ldb.search(base=group_dn,
                                        scope=SCOPE_BASE,
                                        attrs=['member'])
        except LdbError as err:
            self.fail(err)

        orig_msg = group_res[0]

        # Add the user to the list of members.
        members = list(orig_msg.get('member', ()))
        self.assertNotIn(userdn, members, 'account already in Protected Users')
        members.append(userdn)

        m = Message(group_dn)
        m['member'] = MessageElement(members,
                                     FLAG_MOD_REPLACE,
                                     'member')
        self.ldb.modify(m)

        # Try entering the correct password 'x' times in a row, which should
        # fail, but not lock the user out.
        new_password = 'thatsAcomplPASS2'
        for i in range(lockout_threshold):
            with self.assertRaises(
                    NTSTATUSError,
                    msg='Invalid SAMR change_password accepted') as err:
                self.debug(f'Trying correct password, attempt #{i}')
                net.change_password(newpassword=new_password,
                                    username=username,
                                    oldpassword=creds.get_password())

            enum = ctypes.c_uint32(err.exception.args[0]).value
            self.assertEqual(enum, ntstatus.NT_STATUS_ACCOUNT_RESTRICTION)

            res = self._check_account(
                userdn,
                badPwdCount=0,
                badPasswordTime=badPasswordTime,
                logonCount=logonCount,
                lastLogon=lastLogon,
                lastLogonTimestamp=lastLogonTimestamp,
                lockoutTime=None,
                userAccountControl=dsdb.UF_NORMAL_ACCOUNT,
                msDSUserAccountControlComputed=0)

        # The user should not be locked out.
        self.assertNotIn('lockoutTime', res[0])

        # Ensure that the password can still be changed via LDAP.
        self.ldb.modify_ldif(f'''
dn: {userdn}
changetype: modify
delete: userPassword
userPassword: {creds.get_password()}
add: userPassword
userPassword: {new_password}
''')

    def test_samr_set_password_protected(self):
        """Tests the SAMR password set method for Protected Users"""

        creds = self.lockout1ntlm_creds
        lockout_threshold = 5

        # create a connection for SAMR using another user's credentials
        lp = self.get_loadparm()
        net = Net(self.global_creds, lp, server=self.host)

        # work out the initial account values for this user
        username = creds.get_username()
        userdn = f'cn={username},cn=users,{self.base_dn}'
        res = self._check_account(userdn,
                                  badPwdCount=0,
                                  badPasswordTime=('greater', 0),
                                  badPwdCountOnly=True)
        badPasswordTime = int(res[0]['badPasswordTime'][0])
        logonCount = int(res[0]['logonCount'][0])
        lastLogon = int(res[0]['lastLogon'][0])
        lastLogonTimestamp = int(res[0]['lastLogonTimestamp'][0])

        # prove we can change the user password (using the correct password)
        new_password = 'thatsAcomplPASS1'
        net.set_password(newpassword=new_password,
                         account_name=username,
                         domain_name=creds.get_domain())
        creds.set_password(new_password)

        # Add the user to the Protected Users group.

        # Search for the Protected Users group.
        group_dn = Dn(self.ldb,
                      f'<SID={self.ldb.get_domain_sid()}-'
                      f'{security.DOMAIN_RID_PROTECTED_USERS}>')
        try:
            group_res = self.ldb.search(base=group_dn,
                                        scope=SCOPE_BASE,
                                        attrs=['member'])
        except LdbError as err:
            self.fail(err)

        orig_msg = group_res[0]

        # Add the user to the list of members.
        members = list(orig_msg.get('member', ()))
        self.assertNotIn(userdn, members, 'account already in Protected Users')
        members.append(userdn)

        m = Message(group_dn)
        m['member'] = MessageElement(members,
                                     FLAG_MOD_REPLACE,
                                     'member')
        self.ldb.modify(m)

        # Try entering the correct password 'x' times in a row, which should
        # fail, but not lock the user out.
        new_password = 'thatsAcomplPASS2'
        for i in range(lockout_threshold):
            with self.assertRaises(
                    NTSTATUSError,
                    msg='Invalid SAMR set_password accepted') as err:
                self.debug(f'Trying correct password, attempt #{i}')
                net.set_password(newpassword=new_password,
                                 account_name=username,
                                 domain_name=creds.get_domain())

            enum = ctypes.c_uint32(err.exception.args[0]).value
            self.assertEqual(enum, ntstatus.NT_STATUS_ACCOUNT_RESTRICTION)

            res = self._check_account(
                userdn,
                badPwdCount=0,
                badPasswordTime=badPasswordTime,
                logonCount=logonCount,
                lastLogon=lastLogon,
                lastLogonTimestamp=lastLogonTimestamp,
                lockoutTime=None,
                userAccountControl=dsdb.UF_NORMAL_ACCOUNT,
                msDSUserAccountControlComputed=0)

        # The user should not be locked out.
        self.assertNotIn('lockoutTime', res[0])

        # Ensure that the password can still be changed via LDAP.
        self.ldb.modify_ldif(f'''
dn: {userdn}
changetype: modify
delete: userPassword
userPassword: {creds.get_password()}
add: userPassword
userPassword: {new_password}
''')


class PasswordTestsWithSleep(PasswordTests):
    def setUp(self):
        super(PasswordTestsWithSleep, self).setUp()

    def _test_unicodePwd_lockout_with_clear_change(self, creds, other_ldb,
                                                   initial_logoncount_relation=None):
        self.debug("Performs a password cleartext change operation on 'unicodePwd'")
        username = creds.get_username()
        userpass = creds.get_password()
        userdn = "cn=%s,cn=users,%s" % (username, self.base_dn)
        if initial_logoncount_relation is not None:
            logoncount_relation = initial_logoncount_relation
        else:
            logoncount_relation = "greater"

        res = self._check_account(userdn,
                                  badPwdCount=0,
                                  badPasswordTime=("greater", 0),
                                  logonCount=(logoncount_relation, 0),
                                  lastLogon=("greater", 0),
                                  lastLogonTimestamp=("greater", 0),
                                  userAccountControl=dsdb.UF_NORMAL_ACCOUNT,
                                  msDSUserAccountControlComputed=0)
        badPasswordTime = int(res[0]["badPasswordTime"][0])
        logonCount = int(res[0]["logonCount"][0])
        lastLogon = int(res[0]["lastLogon"][0])
        lastLogonTimestamp = int(res[0]["lastLogonTimestamp"][0])
        self.assertGreater(lastLogonTimestamp, badPasswordTime)
        self.assertGreaterEqual(lastLogon, lastLogonTimestamp)

        # Change password on a connection as another user

        # Wrong old password
        try:
            other_ldb.modify_ldif("""
dn: """ + userdn + """
changetype: modify
delete: unicodePwd
unicodePwd:: """ + base64.b64encode("\"thatsAcomplPASS1x\"".encode('utf-16-le')).decode('utf8') + """
add: unicodePwd
unicodePwd:: """ + base64.b64encode("\"thatsAcomplPASS2\"".encode('utf-16-le')).decode('utf8') + """
""")
            self.fail()
        except LdbError as e10:
            (num, msg) = e10.args
            self.assertEqual(num, ERR_CONSTRAINT_VIOLATION)
            self.assertIn('00000056', msg)

        res = self._check_account(userdn,
                                  badPwdCount=1,
                                  badPasswordTime=("greater", badPasswordTime),
                                  logonCount=logonCount,
                                  lastLogon=lastLogon,
                                  lastLogonTimestamp=lastLogonTimestamp,
                                  userAccountControl=dsdb.UF_NORMAL_ACCOUNT,
                                  msDSUserAccountControlComputed=0)
        badPasswordTime = int(res[0]["badPasswordTime"][0])

        # Correct old password
        old_utf16 = ("\"%s\"" % userpass).encode('utf-16-le')
        invalid_utf16 = "\"thatsAcomplPASSX\"".encode('utf-16-le')
        userpass = "thatsAcomplPASS2"
        creds.set_password(userpass)
        new_utf16 = ("\"%s\"" % userpass).encode('utf-16-le')

        other_ldb.modify_ldif("""
dn: """ + userdn + """
changetype: modify
delete: unicodePwd
unicodePwd:: """ + base64.b64encode(old_utf16).decode('utf8') + """
add: unicodePwd
unicodePwd:: """ + base64.b64encode(new_utf16).decode('utf8') + """
""")

        res = self._check_account(userdn,
                                  badPwdCount=1,
                                  badPasswordTime=badPasswordTime,
                                  logonCount=logonCount,
                                  lastLogon=lastLogon,
                                  lastLogonTimestamp=lastLogonTimestamp,
                                  userAccountControl=dsdb.UF_NORMAL_ACCOUNT,
                                  msDSUserAccountControlComputed=0)

        # Wrong old password
        try:
            other_ldb.modify_ldif("""
dn: """ + userdn + """
changetype: modify
delete: unicodePwd
unicodePwd:: """ + base64.b64encode(old_utf16).decode('utf8') + """
add: unicodePwd
unicodePwd:: """ + base64.b64encode(new_utf16).decode('utf8') + """
""")
            self.fail()
        except LdbError as e11:
            (num, msg) = e11.args
            self.assertEqual(num, ERR_CONSTRAINT_VIOLATION)
            self.assertIn('00000056', msg)

        res = self._check_account(userdn,
                                  badPwdCount=2,
                                  badPasswordTime=("greater", badPasswordTime),
                                  logonCount=logonCount,
                                  lastLogon=lastLogon,
                                  lastLogonTimestamp=lastLogonTimestamp,
                                  userAccountControl=dsdb.UF_NORMAL_ACCOUNT,
                                  msDSUserAccountControlComputed=0)
        badPasswordTime = int(res[0]["badPasswordTime"][0])

        # SAMR doesn't have any impact if dsdb.UF_LOCKOUT isn't present.
        # It doesn't create "lockoutTime" = 0 and doesn't
        # reset "badPwdCount" = 0.
        self._reset_samr(res)

        res = self._check_account(userdn,
                                  badPwdCount=2,
                                  badPasswordTime=badPasswordTime,
                                  logonCount=logonCount,
                                  lastLogon=lastLogon,
                                  lastLogonTimestamp=lastLogonTimestamp,
                                  userAccountControl=dsdb.UF_NORMAL_ACCOUNT,
                                  msDSUserAccountControlComputed=0)

        self.debug("two failed password change")

        # Wrong old password
        try:
            other_ldb.modify_ldif("""
dn: """ + userdn + """
changetype: modify
delete: unicodePwd
unicodePwd:: """ + base64.b64encode(invalid_utf16).decode('utf8') + """
add: unicodePwd
unicodePwd:: """ + base64.b64encode(new_utf16).decode('utf8') + """
""")
            self.fail()
        except LdbError as e12:
            (num, msg) = e12.args
            self.assertEqual(num, ERR_CONSTRAINT_VIOLATION)
            self.assertIn('00000056', msg)

        # this is strange, why do we have lockoutTime=badPasswordTime here?
        res = self._check_account(userdn,
                                  badPwdCount=3,
                                  badPasswordTime=("greater", badPasswordTime),
                                  logonCount=logonCount,
                                  lastLogon=lastLogon,
                                  lastLogonTimestamp=lastLogonTimestamp,
                                  lockoutTime=("greater", badPasswordTime),
                                  userAccountControl=dsdb.UF_NORMAL_ACCOUNT,
                                  msDSUserAccountControlComputed=dsdb.UF_LOCKOUT)
        badPasswordTime = int(res[0]["badPasswordTime"][0])
        lockoutTime = int(res[0]["lockoutTime"][0])

        # Wrong old password
        try:
            other_ldb.modify_ldif("""
dn: """ + userdn + """
changetype: modify
delete: unicodePwd
unicodePwd:: """ + base64.b64encode(invalid_utf16).decode('utf8') + """
add: unicodePwd
unicodePwd:: """ + base64.b64encode(new_utf16).decode('utf8') + """
""")
            self.fail()
        except LdbError as e13:
            (num, msg) = e13.args
            self.assertEqual(num, ERR_CONSTRAINT_VIOLATION)
            self.assertIn('00000775', msg)

        res = self._check_account(userdn,
                                  badPwdCount=3,
                                  badPasswordTime=badPasswordTime,
                                  logonCount=logonCount,
                                  lastLogon=lastLogon,
                                  lastLogonTimestamp=lastLogonTimestamp,
                                  lockoutTime=lockoutTime,
                                  userAccountControl=dsdb.UF_NORMAL_ACCOUNT,
                                  msDSUserAccountControlComputed=dsdb.UF_LOCKOUT)

        # Wrong old password
        try:
            other_ldb.modify_ldif("""
dn: """ + userdn + """
changetype: modify
delete: unicodePwd
unicodePwd:: """ + base64.b64encode(invalid_utf16).decode('utf8') + """
add: unicodePwd
unicodePwd:: """ + base64.b64encode(new_utf16).decode('utf8') + """
""")
            self.fail()
        except LdbError as e14:
            (num, msg) = e14.args
            self.assertEqual(num, ERR_CONSTRAINT_VIOLATION)
            self.assertIn('00000775', msg)

        res = self._check_account(userdn,
                                  badPwdCount=3,
                                  badPasswordTime=badPasswordTime,
                                  logonCount=logonCount,
                                  lastLogon=lastLogon,
                                  lastLogonTimestamp=lastLogonTimestamp,
                                  lockoutTime=lockoutTime,
                                  userAccountControl=dsdb.UF_NORMAL_ACCOUNT,
                                  msDSUserAccountControlComputed=dsdb.UF_LOCKOUT)

        try:
            # Correct old password
            other_ldb.modify_ldif("""
dn: """ + userdn + """
changetype: modify
delete: unicodePwd
unicodePwd:: """ + base64.b64encode(new_utf16).decode('utf8') + """
add: unicodePwd
unicodePwd:: """ + base64.b64encode(invalid_utf16).decode('utf8') + """
""")
            self.fail()
        except LdbError as e15:
            (num, msg) = e15.args
            self.assertEqual(num, ERR_CONSTRAINT_VIOLATION)
            self.assertIn('00000775', msg)

        res = self._check_account(userdn,
                                  badPwdCount=3,
                                  badPasswordTime=badPasswordTime,
                                  logonCount=logonCount,
                                  lastLogon=lastLogon,
                                  lastLogonTimestamp=lastLogonTimestamp,
                                  lockoutTime=lockoutTime,
                                  userAccountControl=dsdb.UF_NORMAL_ACCOUNT,
                                  msDSUserAccountControlComputed=dsdb.UF_LOCKOUT)

        # Now reset the lockout, by removing ACB_AUTOLOCK (which removes the lock, despite being a generated attribute)
        self._reset_samr(res)

        res = self._check_account(userdn,
                                  badPwdCount=0,
                                  badPasswordTime=badPasswordTime,
                                  logonCount=logonCount,
                                  lastLogon=lastLogon,
                                  lastLogonTimestamp=lastLogonTimestamp,
                                  lockoutTime=0,
                                  userAccountControl=dsdb.UF_NORMAL_ACCOUNT,
                                  msDSUserAccountControlComputed=0)

        # Correct old password
        old_utf16 = ("\"%s\"" % userpass).encode('utf-16-le')
        invalid_utf16 = "\"thatsAcomplPASSiX\"".encode('utf-16-le')
        userpass = "thatsAcomplPASS2x"
        creds.set_password(userpass)
        new_utf16 = ("\"%s\"" % userpass).encode('utf-16-le')

        other_ldb.modify_ldif("""
dn: """ + userdn + """
changetype: modify
delete: unicodePwd
unicodePwd:: """ + base64.b64encode(old_utf16).decode('utf8') + """
add: unicodePwd
unicodePwd:: """ + base64.b64encode(new_utf16).decode('utf8') + """
""")

        res = self._check_account(userdn,
                                  badPwdCount=0,
                                  badPasswordTime=badPasswordTime,
                                  logonCount=logonCount,
                                  lastLogon=lastLogon,
                                  lastLogonTimestamp=lastLogonTimestamp,
                                  lockoutTime=0,
                                  userAccountControl=dsdb.UF_NORMAL_ACCOUNT,
                                  msDSUserAccountControlComputed=0)

        # Wrong old password
        try:
            other_ldb.modify_ldif("""
dn: """ + userdn + """
changetype: modify
delete: unicodePwd
unicodePwd:: """ + base64.b64encode(invalid_utf16).decode('utf8') + """
add: unicodePwd
unicodePwd:: """ + base64.b64encode(new_utf16).decode('utf8') + """
""")
            self.fail()
        except LdbError as e16:
            (num, msg) = e16.args
            self.assertEqual(num, ERR_CONSTRAINT_VIOLATION)
            self.assertIn('00000056', msg)

        res = self._check_account(userdn,
                                  badPwdCount=1,
                                  badPasswordTime=("greater", badPasswordTime),
                                  logonCount=logonCount,
                                  lastLogon=lastLogon,
                                  lastLogonTimestamp=lastLogonTimestamp,
                                  lockoutTime=0,
                                  userAccountControl=dsdb.UF_NORMAL_ACCOUNT,
                                  msDSUserAccountControlComputed=0)
        badPasswordTime = int(res[0]["badPasswordTime"][0])

        # Wrong old password
        try:
            other_ldb.modify_ldif("""
dn: """ + userdn + """
changetype: modify
delete: unicodePwd
unicodePwd:: """ + base64.b64encode(invalid_utf16).decode('utf8') + """
add: unicodePwd
unicodePwd:: """ + base64.b64encode(new_utf16).decode('utf8') + """
""")
            self.fail()
        except LdbError as e17:
            (num, msg) = e17.args
            self.assertEqual(num, ERR_CONSTRAINT_VIOLATION)
            self.assertIn('00000056', msg)

        res = self._check_account(userdn,
                                  badPwdCount=2,
                                  badPasswordTime=("greater", badPasswordTime),
                                  logonCount=logonCount,
                                  lastLogon=lastLogon,
                                  lastLogonTimestamp=lastLogonTimestamp,
                                  lockoutTime=0,
                                  userAccountControl=dsdb.UF_NORMAL_ACCOUNT,
                                  msDSUserAccountControlComputed=0)
        badPasswordTime = int(res[0]["badPasswordTime"][0])

        # SAMR doesn't have any impact if dsdb.UF_LOCKOUT isn't present.
        # It doesn't reset "badPwdCount" = 0.
        self._reset_samr(res)

        res = self._check_account(userdn,
                                  badPwdCount=2,
                                  badPasswordTime=badPasswordTime,
                                  logonCount=logonCount,
                                  lastLogon=lastLogon,
                                  lastLogonTimestamp=lastLogonTimestamp,
                                  lockoutTime=0,
                                  userAccountControl=dsdb.UF_NORMAL_ACCOUNT,
                                  msDSUserAccountControlComputed=0)

        # Wrong old password
        try:
            other_ldb.modify_ldif("""
dn: """ + userdn + """
changetype: modify
delete: unicodePwd
unicodePwd:: """ + base64.b64encode(invalid_utf16).decode('utf8') + """
add: unicodePwd
unicodePwd:: """ + base64.b64encode(new_utf16).decode('utf8') + """
""")
            self.fail()
        except LdbError as e18:
            (num, msg) = e18.args
            self.assertEqual(num, ERR_CONSTRAINT_VIOLATION)
            self.assertIn('00000056', msg)

        res = self._check_account(userdn,
                                  badPwdCount=3,
                                  badPasswordTime=("greater", badPasswordTime),
                                  logonCount=logonCount,
                                  lastLogon=lastLogon,
                                  lastLogonTimestamp=lastLogonTimestamp,
                                  lockoutTime=("greater", badPasswordTime),
                                  userAccountControl=dsdb.UF_NORMAL_ACCOUNT,
                                  msDSUserAccountControlComputed=dsdb.UF_LOCKOUT)
        badPasswordTime = int(res[0]["badPasswordTime"][0])
        lockoutTime = int(res[0]["lockoutTime"][0])

        time.sleep(self.account_lockout_duration + 1)

        res = self._check_account(userdn,
                                  badPwdCount=3, effective_bad_password_count=0,
                                  badPasswordTime=badPasswordTime,
                                  logonCount=logonCount,
                                  lastLogon=lastLogon,
                                  lastLogonTimestamp=lastLogonTimestamp,
                                  lockoutTime=lockoutTime,
                                  userAccountControl=dsdb.UF_NORMAL_ACCOUNT,
                                  msDSUserAccountControlComputed=0)

        # SAMR doesn't have any impact if dsdb.UF_LOCKOUT isn't present.
        # It doesn't reset "lockoutTime" = 0 and doesn't
        # reset "badPwdCount" = 0.
        self._reset_samr(res)

        res = self._check_account(userdn,
                                  badPwdCount=3, effective_bad_password_count=0,
                                  badPasswordTime=badPasswordTime,
                                  logonCount=logonCount,
                                  lockoutTime=lockoutTime,
                                  lastLogon=lastLogon,
                                  lastLogonTimestamp=lastLogonTimestamp,
                                  userAccountControl=dsdb.UF_NORMAL_ACCOUNT,
                                  msDSUserAccountControlComputed=0)

    def test_unicodePwd_lockout_with_clear_change_krb5(self):
        self._test_unicodePwd_lockout_with_clear_change(self.lockout1krb5_creds,
                                                        self.lockout2krb5_ldb)

    def test_unicodePwd_lockout_with_clear_change_ntlm(self):
        self._test_unicodePwd_lockout_with_clear_change(self.lockout1ntlm_creds,
                                                        self.lockout2ntlm_ldb,
                                                        initial_logoncount_relation="equal")

    def test_login_lockout_krb5(self):
        self._test_login_lockout(self.lockout1krb5_creds)

    def test_login_lockout_ntlm(self):
        self._test_login_lockout(self.lockout1ntlm_creds)

    # Repeat the login lockout tests using PSOs
    def test_pso_login_lockout_krb5(self):
        """Check the PSO lockout settings get applied to the user correctly"""
        self.use_pso_lockout_settings(self.lockout1krb5_creds)
        self._test_login_lockout(self.lockout1krb5_creds)

    def test_pso_login_lockout_ntlm(self):
        """Check the PSO lockout settings get applied to the user correctly"""
        self.use_pso_lockout_settings(self.lockout1ntlm_creds)
        self._test_login_lockout(self.lockout1ntlm_creds)

    def _testing_add_user(self, creds, lockOutObservationWindow=0):
        username = creds.get_username()
        userpass = creds.get_password()
        userdn = "cn=%s,cn=users,%s" % (username, self.base_dn)

        use_kerberos = creds.get_kerberos_state()
        if use_kerberos == MUST_USE_KERBEROS:
            logoncount_relation = 'greater'
            lastlogon_relation = 'greater'
        else:
            logoncount_relation = 'equal'
            if lockOutObservationWindow == 0:
                lastlogon_relation = 'greater'
            else:
                lastlogon_relation = 'equal'

        delete_force(self.ldb, userdn)
        self.ldb.add({
             "dn": userdn,
             "objectclass": "user",
             "sAMAccountName": username})

        self.addCleanup(delete_force, self.ldb, userdn)

        res = self._check_account(userdn,
                                  badPwdCount=0,
                                  badPasswordTime=0,
                                  logonCount=0,
                                  lastLogon=0,
                                  lastLogonTimestamp=('absent', None),
                                  userAccountControl=(dsdb.UF_NORMAL_ACCOUNT |
                                                      dsdb.UF_ACCOUNTDISABLE |
                                                      dsdb.UF_PASSWD_NOTREQD),
                                  msDSUserAccountControlComputed=dsdb.UF_PASSWORD_EXPIRED)

        # SAMR doesn't have any impact if dsdb.UF_LOCKOUT isn't present.
        # It doesn't create "lockoutTime" = 0.
        self._reset_samr(res)

        res = self._check_account(userdn,
                                  badPwdCount=0,
                                  badPasswordTime=0,
                                  logonCount=0,
                                  lastLogon=0,
                                  lastLogonTimestamp=('absent', None),
                                  userAccountControl=(dsdb.UF_NORMAL_ACCOUNT |
                                                      dsdb.UF_ACCOUNTDISABLE |
                                                      dsdb.UF_PASSWD_NOTREQD),
                                  msDSUserAccountControlComputed=dsdb.UF_PASSWORD_EXPIRED)

        # Tests a password change when we don't have any password yet with a
        # wrong old password
        try:
            self.ldb.modify_ldif("""
dn: """ + userdn + """
changetype: modify
delete: userPassword
userPassword: noPassword
add: userPassword
userPassword: thatsAcomplPASS2
""")
            self.fail()
        except LdbError as e19:
            (num, msg) = e19.args
            self.assertEqual(num, ERR_CONSTRAINT_VIOLATION)
            # Windows (2008 at least) seems to have some small bug here: it
            # returns "0000056A" on longer (always wrong) previous passwords.
            self.assertIn('00000056', msg)

        res = self._check_account(userdn,
                                  badPwdCount=1,
                                  badPasswordTime=("greater", 0),
                                  logonCount=0,
                                  lastLogon=0,
                                  lastLogonTimestamp=('absent', None),
                                  userAccountControl=(dsdb.UF_NORMAL_ACCOUNT |
                                                      dsdb.UF_ACCOUNTDISABLE |
                                                      dsdb.UF_PASSWD_NOTREQD),
                                  msDSUserAccountControlComputed=dsdb.UF_PASSWORD_EXPIRED)
        badPwdCount = int(res[0]["badPwdCount"][0])
        badPasswordTime = int(res[0]["badPasswordTime"][0])

        # Sets the initial user password with a "special" password change
        # I think that this internally is a password set operation and it can
        # only be performed by someone which has password set privileges on the
        # account (at least in s4 we do handle it like that).
        self.ldb.modify_ldif("""
dn: """ + userdn + """
changetype: modify
delete: userPassword
add: userPassword
userPassword: """ + userpass + """
""")

        res = self._check_account(userdn,
                                  badPwdCount=badPwdCount,
                                  badPasswordTime=badPasswordTime,
                                  logonCount=0,
                                  lastLogon=0,
                                  lastLogonTimestamp=('absent', None),
                                  userAccountControl=(dsdb.UF_NORMAL_ACCOUNT |
                                                      dsdb.UF_ACCOUNTDISABLE |
                                                      dsdb.UF_PASSWD_NOTREQD),
                                  msDSUserAccountControlComputed=0)

        # Enables the user account
        self.ldb.enable_account("(sAMAccountName=%s)" % username)

        res = self._check_account(userdn,
                                  badPwdCount=badPwdCount,
                                  badPasswordTime=badPasswordTime,
                                  logonCount=0,
                                  lastLogon=0,
                                  lastLogonTimestamp=('absent', None),
                                  userAccountControl=dsdb.UF_NORMAL_ACCOUNT,
                                  msDSUserAccountControlComputed=0)
        if lockOutObservationWindow != 0:
            time.sleep(lockOutObservationWindow + 1)
            effective_bad_password_count = 0
        else:
            effective_bad_password_count = badPwdCount

        res = self._check_account(userdn,
                                  badPwdCount=badPwdCount,
                                  effective_bad_password_count=effective_bad_password_count,
                                  badPasswordTime=badPasswordTime,
                                  logonCount=0,
                                  lastLogon=0,
                                  lastLogonTimestamp=('absent', None),
                                  userAccountControl=dsdb.UF_NORMAL_ACCOUNT,
                                  msDSUserAccountControlComputed=0)

        ldb = SamDB(url=self.host_url, credentials=creds, lp=self.lp)

        if lockOutObservationWindow == 0:
            badPwdCount = 0
            effective_bad_password_count = 0
        if use_kerberos == MUST_USE_KERBEROS:
            badPwdCount = 0
            effective_bad_password_count = 0

        res = self._check_account(userdn,
                                  badPwdCount=badPwdCount,
                                  effective_bad_password_count=effective_bad_password_count,
                                  badPasswordTime=badPasswordTime,
                                  logonCount=(logoncount_relation, 0),
                                  lastLogon=(lastlogon_relation, 0),
                                  lastLogonTimestamp=('greater', badPasswordTime),
                                  userAccountControl=dsdb.UF_NORMAL_ACCOUNT,
                                  msDSUserAccountControlComputed=0)

        logonCount = int(res[0]["logonCount"][0])
        lastLogon = int(res[0]["lastLogon"][0])
        lastLogonTimestamp = int(res[0]["lastLogonTimestamp"][0])
        if lastlogon_relation == 'greater':
            self.assertGreater(lastLogon, badPasswordTime)
            self.assertGreaterEqual(lastLogon, lastLogonTimestamp)

        res = self._check_account(userdn,
                                  badPwdCount=badPwdCount,
                                  effective_bad_password_count=effective_bad_password_count,
                                  badPasswordTime=badPasswordTime,
                                  logonCount=logonCount,
                                  lastLogon=lastLogon,
                                  lastLogonTimestamp=lastLogonTimestamp,
                                  userAccountControl=dsdb.UF_NORMAL_ACCOUNT,
                                  msDSUserAccountControlComputed=0)
        return ldb

    def test_lockout_observation_window(self):
        lockout3krb5_creds = self.insta_creds(self.template_creds,
                                              username="lockout3krb5",
                                              userpass="thatsAcomplPASS0",
                                              kerberos_state=MUST_USE_KERBEROS)
        self._testing_add_user(lockout3krb5_creds)

        lockout4krb5_creds = self.insta_creds(self.template_creds,
                                              username="lockout4krb5",
                                              userpass="thatsAcomplPASS0",
                                              kerberos_state=MUST_USE_KERBEROS)
        self._testing_add_user(lockout4krb5_creds,
                               lockOutObservationWindow=self.lockout_observation_window)

        lockout3ntlm_creds = self.insta_creds(self.template_creds,
                                              username="lockout3ntlm",
                                              userpass="thatsAcomplPASS0",
                                              kerberos_state=DONT_USE_KERBEROS)
        self._testing_add_user(lockout3ntlm_creds)
        lockout4ntlm_creds = self.insta_creds(self.template_creds,
                                              username="lockout4ntlm",
                                              userpass="thatsAcomplPASS0",
                                              kerberos_state=DONT_USE_KERBEROS)
        self._testing_add_user(lockout4ntlm_creds,
                               lockOutObservationWindow=self.lockout_observation_window)

class PasswordTestsWithDefaults(PasswordTests):
    def setUp(self):
        # The tests in this class do not sleep, so we can use the default
        # timeout windows here
        self.account_lockout_duration = 30 * 60
        self.lockout_observation_window = 30 * 60
        super(PasswordTestsWithDefaults, self).setUp()

    # sanity-check that user lockout works with the default settings (we just
    # check the user is locked out - we don't wait for the lockout to expire)
    def test_login_lockout_krb5(self):
        self._test_login_lockout(self.lockout1krb5_creds,
                                 wait_lockout_duration=False)

    def test_login_lockout_ntlm(self):
        self._test_login_lockout(self.lockout1ntlm_creds,
                                 wait_lockout_duration=False)

    # Repeat the login lockout tests using PSOs
    def test_pso_login_lockout_krb5(self):
        """Check the PSO lockout settings get applied to the user correctly"""
        self.use_pso_lockout_settings(self.lockout1krb5_creds)
        self._test_login_lockout(self.lockout1krb5_creds,
                                 wait_lockout_duration=False)

    def test_pso_login_lockout_ntlm(self):
        """Check the PSO lockout settings get applied to the user correctly"""
        self.use_pso_lockout_settings(self.lockout1ntlm_creds)
        self._test_login_lockout(self.lockout1ntlm_creds,
                                 wait_lockout_duration=False)

TestProgram(module=__name__, opts=subunitopts)