text: from k5test import *
  
  # These tests will become much less important after the y2038 boundary
  # has elapsed, and may start exhibiting problems around the year 2075.
  
  if runenv.sizeof_time_t <= 4:
      skip_rest('y2038 timestamp tests', 'platform has 32-bit time_t')
  
  # Start a KDC running roughly 21 years in the future, after the y2038
  # boundary.  Set long maximum lifetimes for later tests.
  conf = {'realms': {'$realm': {'max_life': '9000d',
                                'max_renewable_life': '9000d'}}}
  realm = K5Realm(start_kdc=False, kdc_conf=conf)
  realm.start_kdc(['-T', '662256000'])
  
  # kinit without preauth should succeed with clock skew correction, but
  # will result in an expired ticket, because we sent an absolute end
  # time and didn't get a chance to correct it..
  mark('kinit, no preauth')
  realm.kinit(realm.user_princ, password('user'))
  realm.run([kvno, realm.host_princ], expected_code=1,
            expected_msg='Ticket expired')
  
  # kinit with preauth should succeed and result in a valid ticket, as
  # we get a chance to correct the end time based on the KDC time.  Try
  # with encrypted timestamp and encrypted challenge.
  mark('kinit, with preauth')
  realm.run([kadminl, 'modprinc', '+requires_preauth', 'user'])
  realm.kinit(realm.user_princ, password('user'))
  realm.run([kvno, realm.host_princ])
  realm.kinit(realm.user_princ, password('user'), flags=['-T', realm.ccache])
  realm.run([kvno, realm.host_princ])
  
  # Test that expiration warning works after y2038, by setting a
  # password expiration time ten minutes after the KDC time.
  mark('expiration warning')
  realm.run([kadminl, 'modprinc', '-pwexpire', '662256600 seconds', 'user'])
  out = realm.kinit(realm.user_princ, password('user'))
  if 'will expire in less than one hour' not in out:
      fail('password expiration message')
  year = int(out.split()[-1])
  if year < 2038 or year > 9999:
      fail('password expiration year')
  
  realm.stop_kdc()
  realm.start_kdc()
  realm.start_kadmind()
  realm.prep_kadmin()
  
  # Test getdate parsing of absolute timestamps after 2038 and
  # marshalling over the kadmin protocol.  The local time zone will
  # affect the display time by a little bit, so just look for the year.
  mark('kadmin marshalling')
  realm.run_kadmin(['modprinc', '-pwexpire', '2040-02-03', realm.host_princ])
  realm.run_kadmin(['getprinc', realm.host_princ], expected_msg=' 2040\n')
  
  # Get a ticket whose lifetime crosses the y2038 boundary and
  # range-check the expiration year as reported by klist.
  mark('ticket lifetime across y2038')
  realm.kinit(realm.user_princ, password('user'),
              flags=['-l', '8000d', '-r', '8500d'])
  realm.run([kvno, realm.host_princ])
  out = realm.run([klist])
  if int(out.split('\n')[4].split()[2].split('/')[2]) < 39:
      fail('unexpected tgt expiration year')
  if int(out.split('\n')[5].split()[2].split('/')[2]) < 40:
      fail('unexpected tgt rtill year')
  if int(out.split('\n')[6].split()[2].split('/')[2]) < 39:
      fail('unexpected service ticket expiration year')
  if int(out.split('\n')[7].split()[2].split('/')[2]) < 40:
      fail('unexpected service ticket rtill year')
  realm.kinit(realm.user_princ, None, ['-R'])
  out = realm.run([klist])
  if int(out.split('\n')[4].split()[2].split('/')[2]) < 39:
      fail('unexpected renewed tgt expiration year')
  if int(out.split('\n')[5].split()[2].split('/')[2]) < 40:
      fail('unexpected renewed tgt rtill year')
  
  success('y2038 tests')
  