summaryrefslogtreecommitdiff
path: root/wintest/wintest.py
blob: 61664ae87d8021eb4dff2ac2df5460560f81796a (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
#!/usr/bin/env python

'''automated testing library for testing Samba against windows'''

import pexpect, subprocess
import optparse
import sys, os, time, re

class wintest():
    '''testing of Samba against windows VMs'''

    def __init__(self):
        self.vars = {}
        self.list_mode = False
        self.vms = None
        os.environ['PYTHONUNBUFFERED'] = '1'
        self.parser = optparse.OptionParser("wintest")

    def check_prerequesites(self):
        self.info("Checking prerequesites")
        self.setvar('HOSTNAME', self.cmd_output("hostname -s").strip())
        if os.getuid() != 0:
            raise Exception("You must run this script as root")
        self.run_cmd('ifconfig ${INTERFACE} ${INTERFACE_NET} up')
        if self.getvar('INTERFACE_IPV6'):
            self.run_cmd('ifconfig ${INTERFACE} inet6 del ${INTERFACE_IPV6}/64', checkfail=False)
            self.run_cmd('ifconfig ${INTERFACE} inet6 add ${INTERFACE_IPV6}/64 up')

        self.run_cmd('ifconfig ${NAMED_INTERFACE} ${NAMED_INTERFACE_NET} up')
        if self.getvar('NAMED_INTERFACE_IPV6'):
            self.run_cmd('ifconfig ${NAMED_INTERFACE} inet6 del ${NAMED_INTERFACE_IPV6}/64', checkfail=False)
            self.run_cmd('ifconfig ${NAMED_INTERFACE} inet6 add ${NAMED_INTERFACE_IPV6}/64 up')

    def stop_vms(self):
        '''Shut down any existing alive VMs, so they do not collide with what we are doing'''
        self.info('Shutting down any of our VMs already running')
        vms = self.get_vms()
        for v in vms:
            self.vm_poweroff(v, checkfail=False)

    def setvar(self, varname, value):
        '''set a substitution variable'''
        self.vars[varname] = value

    def getvar(self, varname):
        '''return a substitution variable'''
        if not varname in self.vars:
            return None
        return self.vars[varname]

    def setwinvars(self, vm, prefix='WIN'):
        '''setup WIN_XX vars based on a vm name'''
        for v in ['VM', 'HOSTNAME', 'USER', 'PASS', 'SNAPSHOT', 'REALM', 'DOMAIN', 'IP']:
            vname = '%s_%s' % (vm, v)
            if vname in self.vars:
                self.setvar("%s_%s" % (prefix,v), self.substitute("${%s}" % vname))
            else:
                self.vars.pop("%s_%s" % (prefix,v), None)

        if self.getvar("WIN_REALM"):
            self.setvar("WIN_REALM", self.getvar("WIN_REALM").upper())
            self.setvar("WIN_LCREALM", self.getvar("WIN_REALM").lower())
            dnsdomain = self.getvar("WIN_REALM")
            self.setvar("WIN_BASEDN", "DC=" + dnsdomain.replace(".", ",DC="))
        if self.getvar("WIN_USER") is None:
            self.setvar("WIN_USER", "administrator")

    def info(self, msg):
        '''print some information'''
        if not self.list_mode:
            print(self.substitute(msg))

    def load_config(self, fname):
        '''load the config file'''
        f = open(fname)
        for line in f:
            line = line.strip()
            if len(line) == 0 or line[0] == '#':
                continue
            colon = line.find(':')
            if colon == -1:
                raise RuntimeError("Invalid config line '%s'" % line)
            varname = line[0:colon].strip()
            value   = line[colon+1:].strip()
            self.setvar(varname, value)

    def list_steps_mode(self):
        '''put wintest in step listing mode'''
        self.list_mode = True

    def set_skip(self, skiplist):
        '''set a list of tests to skip'''
        self.skiplist = skiplist.split(',')

    def set_vms(self, vms):
        '''set a list of VMs to test'''
        if vms is not None:
            self.vms = []
            for vm in vms.split(','):
                vm = vm.upper()
                self.vms.append(vm)

    def skip(self, step):
        '''return True if we should skip a step'''
        if self.list_mode:
            print("\t%s" % step)
            return True
        return step in self.skiplist

    def substitute(self, text):
        """Substitute strings of the form ${NAME} in text, replacing
        with substitutions from vars.
        """
        if isinstance(text, list):
            ret = text[:]
            for i in range(len(ret)):
                ret[i] = self.substitute(ret[i])
            return ret

        """We may have objects such as pexpect.EOF that are not strings"""
        if not isinstance(text, str):
            return text
        while True:
            var_start = text.find("${")
            if var_start == -1:
                return text
            var_end = text.find("}", var_start)
            if var_end == -1:
                return text
            var_name = text[var_start+2:var_end]
            if not var_name in self.vars:
                raise RuntimeError("Unknown substitution variable ${%s}" % var_name)
            text = text.replace("${%s}" % var_name, self.vars[var_name])
        return text

    def have_var(self, varname):
        '''see if a variable has been set'''
        return varname in self.vars

    def have_vm(self, vmname):
        '''see if a VM should be used'''
        if not self.have_var(vmname + '_VM'):
            return False
        if self.vms is None:
            return True
        return vmname in self.vms

    def putenv(self, key, value):
        '''putenv with substitution'''
        os.environ[key] = self.substitute(value)

    def chdir(self, dir):
        '''chdir with substitution'''
        os.chdir(self.substitute(dir))

    def del_files(self, dirs):
        '''delete all files in the given directory'''
        for d in dirs:
            self.run_cmd("find %s -type f | xargs rm -f" % d)

    def write_file(self, filename, text, mode='w'):
        '''write to a file'''
        f = open(self.substitute(filename), mode=mode)
        f.write(self.substitute(text))
        f.close()

    def run_cmd(self, cmd, dir=".", show=None, output=False, checkfail=True):
        '''run a command'''
        cmd = self.substitute(cmd)
        if isinstance(cmd, list):
            self.info('$ ' + " ".join(cmd))
        else:
            self.info('$ ' + cmd)
        if output:
            return subprocess.Popen([cmd], shell=True, stdout=subprocess.PIPE, stderr=subprocess.STDOUT, cwd=dir).communicate()[0]
        if isinstance(cmd, list):
            shell=False
        else:
            shell=True
        if checkfail:
            return subprocess.check_call(cmd, shell=shell, cwd=dir)
        else:
            return subprocess.call(cmd, shell=shell, cwd=dir)


    def run_child(self, cmd, dir="."):
        '''create a child and return the Popen handle to it'''
        cwd = os.getcwd()
        cmd = self.substitute(cmd)
        if isinstance(cmd, list):
            self.info('$ ' + " ".join(cmd))
        else:
            self.info('$ ' + cmd)
        if isinstance(cmd, list):
            shell=False
        else:
            shell=True
        os.chdir(dir)
        ret = subprocess.Popen(cmd, shell=shell, stderr=subprocess.STDOUT)
        os.chdir(cwd)
        return ret

    def cmd_output(self, cmd):
        '''return output from and command'''
        cmd = self.substitute(cmd)
        return self.run_cmd(cmd, output=True)

    def cmd_contains(self, cmd, contains, nomatch=False, ordered=False, regex=False,
                     casefold=True):
        '''check that command output contains the listed strings'''

        if isinstance(contains, str):
            contains = [contains]

        out = self.cmd_output(cmd)
        self.info(out)
        for c in self.substitute(contains):
            if regex:
                if casefold:
                    c = c.upper()
                    out = out.upper()
                m = re.search(c, out)
                if m is None:
                    start = -1
                    end = -1
                else:
                    start = m.start()
                    end = m.end()
            elif casefold:
                start = out.upper().find(c.upper())
                end = start + len(c)
            else:
                start = out.find(c)
                end = start + len(c)
            if nomatch:
                if start != -1:
                    raise RuntimeError("Expected to not see %s in %s" % (c, cmd))
            else:
                if start == -1:
                    raise RuntimeError("Expected to see %s in %s" % (c, cmd))
            if ordered and start != -1:
                out = out[end:]

    def retry_cmd(self, cmd, contains, retries=30, delay=2, wait_for_fail=False,
                  ordered=False, regex=False, casefold=True):
        '''retry a command a number of times'''
        while retries > 0:
            try:
                self.cmd_contains(cmd, contains, nomatch=wait_for_fail,
                                  ordered=ordered, regex=regex, casefold=casefold)
                return
            except:
                time.sleep(delay)
                retries -= 1
                self.info("retrying (retries=%u delay=%u)" % (retries, delay))
        raise RuntimeError("Failed to find %s" % contains)

    def pexpect_spawn(self, cmd, timeout=60, crlf=True, casefold=True):
        '''wrapper around pexpect spawn'''
        cmd = self.substitute(cmd)
        self.info("$ " + cmd)
        ret = pexpect.spawn(cmd, logfile=sys.stdout, timeout=timeout)

        def sendline_sub(line):
            line = self.substitute(line)
            if crlf:
                line = line.replace('\n', '\r\n') + '\r'
            return ret.old_sendline(line)

        def expect_sub(line, timeout=ret.timeout, casefold=casefold):
            line = self.substitute(line)
            if casefold:
                if isinstance(line, list):
                    for i in range(len(line)):
                        if isinstance(line[i], str):
                            line[i] = '(?i)' + line[i]
                elif isinstance(line, str):
                    line = '(?i)' + line
            return ret.old_expect(line, timeout=timeout)

        ret.old_sendline = ret.sendline
        ret.sendline = sendline_sub
        ret.old_expect = ret.expect
        ret.expect = expect_sub

        return ret

    def get_nameserver(self):
        '''Get the current nameserver from /etc/resolv.conf'''
        child = self.pexpect_spawn('cat /etc/resolv.conf', crlf=False)
        i = child.expect(['Generated by wintest', 'nameserver'])
        if i == 0:
            child.expect('your original resolv.conf')
            child.expect('nameserver')
        child.expect('\d+.\d+.\d+.\d+')
        return child.after

    def rndc_cmd(self, cmd, checkfail=True):
        '''run a rndc command'''
        self.run_cmd("${RNDC} -c ${PREFIX}/etc/rndc.conf %s" % cmd, checkfail=checkfail)

    def named_supports_gssapi_keytab(self):
        '''see if named supports tkey-gssapi-keytab'''
        self.write_file("${PREFIX}/named.conf.test",
                     'options { tkey-gssapi-keytab "test"; };')
        try:
            self.run_cmd("${NAMED_CHECKCONF} ${PREFIX}/named.conf.test")
        except subprocess.CalledProcessError:
            return False
        return True

    def set_nameserver(self, nameserver):
        '''set the nameserver in resolv.conf'''
        self.write_file("/etc/resolv.conf.wintest", '''
# Generated by wintest, the Samba v Windows automated testing system
nameserver %s

# your original resolv.conf appears below:
''' % self.substitute(nameserver))
        child = self.pexpect_spawn("cat /etc/resolv.conf", crlf=False)
        i = child.expect(['your original resolv.conf appears below:', pexpect.EOF])
        if i == 0:
            child.expect(pexpect.EOF)
        contents = child.before.lstrip().replace('\r', '')
        self.write_file('/etc/resolv.conf.wintest', contents, mode='a')
        self.write_file('/etc/resolv.conf.wintest-bak', contents)
        self.run_cmd("mv -f /etc/resolv.conf.wintest /etc/resolv.conf")
        self.resolv_conf_backup = '/etc/resolv.conf.wintest-bak';

    def configure_bind(self, kerberos_support=False, include=None):
        self.chdir('${PREFIX}')

        if self.getvar('NAMED_INTERFACE_IPV6'):
            ipv6_listen = 'listen-on-v6 port 53 { ${NAMED_INTERFACE_IPV6}; };'
        else:
            ipv6_listen = ''
        self.setvar('BIND_LISTEN_IPV6', ipv6_listen)

        if not kerberos_support:
            self.setvar("NAMED_TKEY_OPTION", "")
        elif self.getvar('NAMESERVER_BACKEND') != 'SAMBA_INTERNAL':
            if self.named_supports_gssapi_keytab():
                self.setvar("NAMED_TKEY_OPTION",
                         'tkey-gssapi-keytab "${PREFIX}/private/dns.keytab";')
            else:
                self.info("LCREALM=${LCREALM}")
                self.setvar("NAMED_TKEY_OPTION",
                         '''tkey-gssapi-credential "DNS/${LCREALM}";
                            tkey-domain "${LCREALM}";
                 ''')
            self.putenv('KEYTAB_FILE', '${PREFIX}/private/dns.keytab')
            self.putenv('KRB5_KTNAME', '${PREFIX}/private/dns.keytab')
        else:
            self.setvar("NAMED_TKEY_OPTION", "")

        if include and self.getvar('NAMESERVER_BACKEND') != 'SAMBA_INTERNAL':
            self.setvar("NAMED_INCLUDE", 'include "%s";' % include)
        else:
            self.setvar("NAMED_INCLUDE", '')

        self.run_cmd("mkdir -p ${PREFIX}/etc")

        self.write_file("etc/named.conf", '''
options {
	listen-on port 53 { ${NAMED_INTERFACE_IP};  };
	${BIND_LISTEN_IPV6}
	directory 	"${PREFIX}/var/named";
	dump-file 	"${PREFIX}/var/named/data/cache_dump.db";
	pid-file 	"${PREFIX}/var/named/named.pid";
        statistics-file "${PREFIX}/var/named/data/named_stats.txt";
        memstatistics-file "${PREFIX}/var/named/data/named_mem_stats.txt";
	allow-query     { any; };
	recursion yes;
	${NAMED_TKEY_OPTION}
        max-cache-ttl 10;
        max-ncache-ttl 10;

	forward only;
	forwarders {
		  ${DNSSERVER};
	};

};

key "rndc-key" {
	algorithm hmac-md5;
	secret "lA/cTrno03mt5Ju17ybEYw==";
};

controls {
	inet ${NAMED_INTERFACE_IP} port 953
	allow { any; } keys { "rndc-key"; };
};

${NAMED_INCLUDE}
''')
        
        if self.getvar('NAMESERVER_BACKEND') == 'SAMBA_INTERNAL':
              self.write_file('etc/named.conf',
                         '''
zone "%s" IN {
      type forward;
      forward only;
      forwarders {
         %s;
      };
};
''' % (self.getvar('LCREALM'), self.getvar('INTERFACE_IP')),
                     mode='a')
          

        # add forwarding for the windows domains
        domains = self.get_domains()

        for d in domains:
            self.write_file('etc/named.conf',
                         '''
zone "%s" IN {
      type forward;
      forward only;
      forwarders {
         %s;
      };
};
''' % (d, domains[d]),
                     mode='a')


        self.write_file("etc/rndc.conf", '''
# Start of rndc.conf
key "rndc-key" {
	algorithm hmac-md5;
	secret "lA/cTrno03mt5Ju17ybEYw==";
};

options {
	default-key "rndc-key";
	default-server  ${NAMED_INTERFACE_IP};
	default-port 953;
};
''')


    def stop_bind(self):
        '''Stop our private BIND from listening and operating'''
        self.rndc_cmd("stop", checkfail=False)
        self.port_wait("${NAMED_INTERFACE_IP}", 53, wait_for_fail=True)

        self.run_cmd("rm -rf var/named")


    def start_bind(self):
        '''restart the test environment version of bind'''
        self.info("Restarting bind9")
        self.chdir('${PREFIX}')

        self.set_nameserver(self.getvar('NAMED_INTERFACE_IP'))

        self.run_cmd("mkdir -p var/named/data")
        self.run_cmd("chown -R ${BIND_USER} var/named")

        self.bind_child = self.run_child("${BIND9} -u ${BIND_USER} -n 1 -c ${PREFIX}/etc/named.conf -g")

        self.port_wait("${NAMED_INTERFACE_IP}", 53)
        self.rndc_cmd("flush")

    def restart_bind(self, kerberos_support=False, include=None):
        self.configure_bind(kerberos_support=kerberos_support, include=include)
        self.stop_bind()
        self.start_bind()

    def restore_resolv_conf(self):
        '''restore the /etc/resolv.conf after testing is complete'''
        if getattr(self, 'resolv_conf_backup', False):
            self.info("restoring /etc/resolv.conf")
            self.run_cmd("mv -f %s /etc/resolv.conf" % self.resolv_conf_backup)


    def vm_poweroff(self, vmname, checkfail=True):
        '''power off a VM'''
        self.setvar('VMNAME', vmname)
        self.run_cmd("${VM_POWEROFF}", checkfail=checkfail)

    def vm_reset(self, vmname):
        '''reset a VM'''
        self.setvar('VMNAME', vmname)
        self.run_cmd("${VM_RESET}")

    def vm_restore(self, vmname, snapshot):
        '''restore a VM'''
        self.setvar('VMNAME', vmname)
        self.setvar('SNAPSHOT', snapshot)
        self.run_cmd("${VM_RESTORE}")

    def ping_wait(self, hostname):
        '''wait for a hostname to come up on the network'''
        hostname = self.substitute(hostname)
        loops=10
        while loops > 0:
            try:
                self.run_cmd("ping -c 1 -w 10 %s" % hostname)
                break
            except:
                loops = loops - 1
        if loops == 0:
            raise RuntimeError("Failed to ping %s" % hostname)
        self.info("Host %s is up" % hostname)

    def port_wait(self, hostname, port, retries=200, delay=3, wait_for_fail=False):
        '''wait for a host to come up on the network'''

        while retries > 0:
            child = self.pexpect_spawn("nc -v -z -w 1 %s %u" % (hostname, port), crlf=False, timeout=1)
            child.expect([pexpect.EOF, pexpect.TIMEOUT])
            child.close()
            i = child.exitstatus
            if wait_for_fail:
                #wait for timeout or fail
                if i == None or i > 0:
                    return
            else:
                if i == 0:
                    return

            time.sleep(delay)
            retries -= 1
            self.info("retrying (retries=%u delay=%u)" % (retries, delay))

        raise RuntimeError("gave up waiting for %s:%d" % (hostname, port))

    def run_net_time(self, child):
        '''run net time on windows'''
        child.sendline("net time \\\\${HOSTNAME} /set")
        child.expect("Do you want to set the local computer")
        child.sendline("Y")
        child.expect("The command completed successfully")

    def run_date_time(self, child, time_tuple=None):
        '''run date and time on windows'''
        if time_tuple is None:
            time_tuple = time.localtime()
        child.sendline("date")
        child.expect("Enter the new date:")
        i = child.expect(["dd-mm-yy", "mm-dd-yy"])
        if i == 0:
            child.sendline(time.strftime("%d-%m-%y", time_tuple))
        else:
            child.sendline(time.strftime("%m-%d-%y", time_tuple))
        child.expect("C:")
        child.sendline("time")
        child.expect("Enter the new time:")
        child.sendline(time.strftime("%H:%M:%S", time_tuple))
        child.expect("C:")

    def get_ipconfig(self, child):
        '''get the IP configuration of the child'''
        child.sendline("ipconfig /all")
        child.expect('Ethernet adapter ')
        child.expect("[\w\s]+")
        self.setvar("WIN_NIC", child.after)
        child.expect(['IPv4 Address', 'IP Address'])
        child.expect('\d+.\d+.\d+.\d+')
        self.setvar('WIN_IPV4_ADDRESS', child.after)
        child.expect('Subnet Mask')
        child.expect('\d+.\d+.\d+.\d+')
        self.setvar('WIN_SUBNET_MASK', child.after)
        child.expect('Default Gateway')
        i = child.expect(['\d+.\d+.\d+.\d+', "C:"])
        if i == 0:
            self.setvar('WIN_DEFAULT_GATEWAY', child.after)
            child.expect("C:")

    def get_is_dc(self, child):
        '''check if a windows machine is a domain controller'''
        child.sendline("dcdiag")
        i = child.expect(["is not a [Directory Server|DC]",
                          "is not recognized as an internal or external command",
                          "Home Server = ",
                          "passed test Replications"])
        if i == 0:
            return False
        if i == 1 or i == 3:
            child.expect("C:")
            child.sendline("net config Workstation")
            child.expect("Workstation domain")
            child.expect('[\S]+')
            domain = child.after
            i = child.expect(["Workstation Domain DNS Name", "Logon domain"])
            '''If we get the Logon domain first, we are not in an AD domain'''
            if i == 1:
                return False
            if domain.upper() == self.getvar("WIN_DOMAIN").upper():
                return True

        child.expect('[\S]+')
        hostname = child.after
        if hostname.upper() == self.getvar("WIN_HOSTNAME").upper():
            return True

    def set_noexpire(self, child, username):
        """Ensure this user's password does not expire"""
        child.sendline('wmic useraccount where name="%s" set PasswordExpires=FALSE' % username)
        child.expect("update successful")
        child.expect("C:")

    def run_tlntadmn(self, child):
        '''remove the annoying telnet restrictions'''
        child.sendline('tlntadmn config maxconn=1024')
        child.expect(["The settings were successfully updated", "Access is denied"])
        child.expect("C:")

    def disable_firewall(self, child):
        '''remove the annoying firewall'''
        child.sendline('netsh advfirewall set allprofiles state off')
        i = child.expect(["Ok", "The following command was not found: advfirewall set allprofiles state off", "The requested operation requires elevation", "Access is denied"])
        child.expect("C:")
        if i == 1:
            child.sendline('netsh firewall set opmode mode = DISABLE profile = ALL')
            i = child.expect(["Ok", "The following command was not found", "Access is denied"])
            if i != 0:
                self.info("Firewall disable failed - ignoring")
            child.expect("C:")

    def set_dns(self, child):
        child.sendline('netsh interface ip set dns "${WIN_NIC}" static ${NAMED_INTERFACE_IP} primary')
        i = child.expect(['C:', pexpect.EOF, pexpect.TIMEOUT], timeout=5)
        if i > 0:
            return True
        else:
            return False

    def set_ip(self, child):
        """fix the IP address to the same value it had when we
        connected, but don't use DHCP, and force the DNS server to our
        DNS server.  This allows DNS updates to run"""
        self.get_ipconfig(child)
        if self.getvar("WIN_IPV4_ADDRESS") != self.getvar("WIN_IP"):
            raise RuntimeError("ipconfig address %s != nmblookup address %s" % (self.getvar("WIN_IPV4_ADDRESS"),
                                                                                self.getvar("WIN_IP")))
        child.sendline('netsh')
        child.expect('netsh>')
        child.sendline('offline')
        child.expect('netsh>')
        child.sendline('routing ip add persistentroute dest=0.0.0.0 mask=0.0.0.0 name="${WIN_NIC}" nhop=${WIN_DEFAULT_GATEWAY}')
        child.expect('netsh>')
        child.sendline('interface ip set address "${WIN_NIC}" static ${WIN_IPV4_ADDRESS} ${WIN_SUBNET_MASK} ${WIN_DEFAULT_GATEWAY} 1 store=persistent')
        i = child.expect(['The syntax supplied for this command is not valid. Check help for the correct syntax', 'netsh>', pexpect.EOF, pexpect.TIMEOUT], timeout=5)
        if i == 0:
            child.sendline('interface ip set address "${WIN_NIC}" static ${WIN_IPV4_ADDRESS} ${WIN_SUBNET_MASK} ${WIN_DEFAULT_GATEWAY} 1')
            child.expect('netsh>')
        child.sendline('commit')
        child.sendline('online')
        child.sendline('exit')

        child.expect([pexpect.EOF, pexpect.TIMEOUT], timeout=5)
        return True


    def resolve_ip(self, hostname, retries=60, delay=5):
        '''resolve an IP given a hostname, assuming NBT'''
        while retries > 0:
            child = self.pexpect_spawn("bin/nmblookup %s" % hostname)
            i = 0
            while i == 0:
                i = child.expect(["querying", '\d+.\d+.\d+.\d+', hostname, "Lookup failed"])
                if i == 0:
                    child.expect("\r")
            if i == 1:
                return child.after
            retries -= 1
            time.sleep(delay)
            self.info("retrying (retries=%u delay=%u)" % (retries, delay))
        raise RuntimeError("Failed to resolve IP of %s" % hostname)


    def open_telnet(self, hostname, username, password, retries=60, delay=5, set_time=False, set_ip=False,
                    disable_firewall=True, run_tlntadmn=True, set_noexpire=False):
        '''open a telnet connection to a windows server, return the pexpect child'''
        set_route = False
        set_dns = False
        set_telnetclients = True
        if self.getvar('WIN_IP'):
            ip = self.getvar('WIN_IP')
        else:
            ip = self.resolve_ip(hostname)
            self.setvar('WIN_IP', ip)
        while retries > 0:
            child = self.pexpect_spawn("telnet " + ip + " -l '" + username + "'")
            i = child.expect(["Welcome to Microsoft Telnet Service",
                              "Denying new connections due to the limit on number of connections",
                              "No more connections are allowed to telnet server",
                              "Unable to connect to remote host",
                              "No route to host",
                              "Connection refused",
                              pexpect.EOF])
            if i != 0:
                child.close()
                time.sleep(delay)
                retries -= 1
                self.info("retrying (retries=%u delay=%u)" % (retries, delay))
                continue
            child.expect("password:")
            child.sendline(password)
            i = child.expect(["C:",
                              "TelnetClients",
                              "Denying new connections due to the limit on number of connections",
                              "No more connections are allowed to telnet server",
                              "Unable to connect to remote host",
                              "No route to host",
                              "Connection refused",
                              pexpect.EOF])
            if i == 1:
                if set_telnetclients:
                    self.run_cmd('bin/net rpc group addmem TelnetClients "authenticated users" -S $WIN_IP -U$WIN_USER%$WIN_PASS')
                    child.close()
                    retries -= 1
                    set_telnetclients = False
                    self.info("retrying (retries=%u delay=%u)" % (retries, delay))
                    continue
                else:
                    raise RuntimeError("Failed to connect with telnet due to missing TelnetClients membership")

            if i != 0:
                child.close()
                time.sleep(delay)
                retries -= 1
                self.info("retrying (retries=%u delay=%u)" % (retries, delay))
                continue
            if set_dns:
                set_dns = False
                if self.set_dns(child):
                    continue;
            if set_route:
                child.sendline('route add 0.0.0.0 mask 0.0.0.0 ${WIN_DEFAULT_GATEWAY}')
                child.expect("C:")
                set_route = False
            if set_time:
                self.run_date_time(child, None)
                set_time = False
            if run_tlntadmn:
                self.run_tlntadmn(child)
                run_tlntadmn = False
            if set_noexpire:
                self.set_noexpire(child, username)
                set_noexpire = False
            if disable_firewall:
                self.disable_firewall(child)
                disable_firewall = False
            if set_ip:
                set_ip = False
                if self.set_ip(child):
                    set_route = True
                    set_dns = True
                continue
            return child
        raise RuntimeError("Failed to connect with telnet")

    def kinit(self, username, password):
        '''use kinit to setup a credentials cache'''
        self.run_cmd("kdestroy")
        self.putenv('KRB5CCNAME', "${PREFIX}/ccache.test")
        username = self.substitute(username)
        s = username.split('@')
        if len(s) > 0:
            s[1] = s[1].upper()
        username = '@'.join(s)
        child = self.pexpect_spawn('kinit ' + username)
        child.expect("Password")
        child.sendline(password)
        child.expect(pexpect.EOF)
        child.close()
        if child.exitstatus != 0:
            raise RuntimeError("kinit failed with status %d" % child.exitstatus)

    def get_domains(self):
        '''return a dictionary of DNS domains and IPs for named.conf'''
        ret = {}
        for v in self.vars:
            if v[-6:] == "_REALM":
                base = v[:-6]
                if base + '_IP' in self.vars:
                    ret[self.vars[base + '_REALM']] = self.vars[base + '_IP']
        return ret

    def wait_reboot(self, retries=3):
        '''wait for a VM to reboot'''

        # first wait for it to shutdown
        self.port_wait("${WIN_IP}", 139, wait_for_fail=True, delay=6)

        # now wait for it to come back. If it fails to come back
        # then try resetting it
        while retries > 0:
            try:
                self.port_wait("${WIN_IP}", 139)
                return
            except:
                retries -= 1
                self.vm_reset("${WIN_VM}")
                self.info("retrying reboot (retries=%u)" % retries)
        raise RuntimeError(self.substitute("VM ${WIN_VM} failed to reboot"))

    def get_vms(self):
        '''return a dictionary of all the configured VM names'''
        ret = []
        for v in self.vars:
            if v[-3:] == "_VM":
                ret.append(self.vars[v])
        return ret


    def run_dcpromo_as_first_dc(self, vm, func_level=None):
        self.setwinvars(vm)
        self.info("Configuring a windows VM ${WIN_VM} at the first DC in the domain using dcpromo")
        child = self.open_telnet("${WIN_HOSTNAME}", "administrator", "${WIN_PASS}", set_time=True)
        if self.get_is_dc(child):
            return

        if func_level == '2008r2':
            self.setvar("FUNCTION_LEVEL_INT", str(4))
        elif func_level == '2003':
            self.setvar("FUNCTION_LEVEL_INT", str(1))
        else:
            self.setvar("FUNCTION_LEVEL_INT", str(0))

        child = self.open_telnet("${WIN_HOSTNAME}", "administrator", "${WIN_PASS}", set_ip=True, set_noexpire=True)

        """This server must therefore not yet be a directory server, so we must promote it"""
        child.sendline("copy /Y con answers.txt")
        child.sendline('''
[DCInstall]
; New forest promotion
ReplicaOrNewDomain=Domain
NewDomain=Forest
NewDomainDNSName=${WIN_REALM}
ForestLevel=${FUNCTION_LEVEL_INT}
DomainNetbiosName=${WIN_DOMAIN}
DomainLevel=${FUNCTION_LEVEL_INT}
InstallDNS=Yes
ConfirmGc=Yes
CreateDNSDelegation=No
DatabasePath="C:\Windows\NTDS"
LogPath="C:\Windows\NTDS"
SYSVOLPath="C:\Windows\SYSVOL"
; Set SafeModeAdminPassword to the correct value prior to using the unattend file
SafeModeAdminPassword=${WIN_PASS}
; Run-time flags (optional)
RebootOnCompletion=No

''')
        child.expect("copied.")
        child.expect("C:")
        child.expect("C:")
        child.sendline("dcpromo /answer:answers.txt")
        i = child.expect(["You must restart this computer", "failed", "Active Directory Domain Services was not installed", "C:", pexpect.TIMEOUT], timeout=240)
        if i == 1 or i == 2:
            raise Exception("dcpromo failed")
        if i == 4: # timeout
            child = self.open_telnet("${WIN_HOSTNAME}", "administrator", "${WIN_PASS}")

        child.sendline("shutdown -r -t 0")
        self.port_wait("${WIN_IP}", 139, wait_for_fail=True)
        self.port_wait("${WIN_IP}", 139)

        child = self.open_telnet("${WIN_HOSTNAME}", "administrator", "${WIN_PASS}")
        # Check if we became a DC by now
        if not self.get_is_dc(child):
            raise Exception("dcpromo failed (and wasn't a DC even after rebooting)")
        # Give DNS registration a kick
        child.sendline("ipconfig /registerdns")

        self.retry_cmd("host -t SRV _ldap._tcp.${WIN_REALM} ${WIN_IP}", ['has SRV record'], retries=60, delay=5 )


    def start_winvm(self, vm):
        '''start a Windows VM'''
        self.setwinvars(vm)
        
        self.info("Joining a windows box to the domain")
        self.vm_poweroff("${WIN_VM}", checkfail=False)
        self.vm_restore("${WIN_VM}", "${WIN_SNAPSHOT}")

    def run_winjoin(self, vm, domain, username="administrator", password="${PASSWORD1}"):
        '''join a windows box to a domain'''
        child = self.open_telnet("${WIN_HOSTNAME}", "${WIN_USER}", "${WIN_PASS}", set_time=True, set_ip=True, set_noexpire=True)
        retries = 5
        while retries > 0:
            child.sendline("ipconfig /flushdns")
            child.expect("C:")
            child.sendline("netdom join ${WIN_HOSTNAME} /Domain:%s /UserD:%s /PasswordD:%s" % (domain, username, password))
            i = child.expect(["The command completed successfully", 
                             "The specified domain either does not exist or could not be contacted."], timeout=120)
            if i == 0:
                break
            time.sleep(10)
            retries -= 1

        child.expect("C:")
        child.sendline("shutdown /r -t 0")
        self.wait_reboot()
        child = self.open_telnet("${WIN_HOSTNAME}", "${WIN_USER}", "${WIN_PASS}", set_time=True, set_ip=True)
        child.sendline("ipconfig /registerdns")
        child.expect("Registration of the DNS resource records for all adapters of this computer has been initiated. Any errors will be reported in the Event Viewer")
        child.expect("C:")


    def test_remote_smbclient(self, vm, username="${WIN_USER}", password="${WIN_PASS}", args=""):
        '''test smbclient against remote server'''
        self.setwinvars(vm)
        self.info('Testing smbclient')
        self.chdir('${PREFIX}')
        smbclient = self.getvar("smbclient")
        self.cmd_contains("%s --version" % (smbclient), ["${SAMBA_VERSION}"])
        self.retry_cmd('%s -L ${WIN_HOSTNAME} -U%s%%%s %s' % (smbclient, username, password, args), ["IPC"], retries=60, delay=5)

    def test_net_use(self, vm, realm, domain, username, password):
        self.setwinvars(vm)
        self.info('Testing net use against Samba3 member')
        child = self.open_telnet("${WIN_HOSTNAME}", "%s\\%s" % (domain, username), password)
        child.sendline("net use t: \\\\${HOSTNAME}.%s\\test" % realm)
        child.expect("The command completed successfully")


    def setup(self, testname, subdir):
        '''setup for main tests, parsing command line'''
        self.parser.add_option("--conf", type='string', default='', help='config file')
        self.parser.add_option("--skip", type='string', default='', help='list of steps to skip (comma separated)')
        self.parser.add_option("--vms", type='string', default=None, help='list of VMs to use (comma separated)')
        self.parser.add_option("--list", action='store_true', default=False, help='list the available steps')
        self.parser.add_option("--rebase", action='store_true', default=False, help='do a git pull --rebase')
        self.parser.add_option("--clean", action='store_true', default=False, help='clean the tree')
        self.parser.add_option("--prefix", type='string', default=None, help='override install prefix')
        self.parser.add_option("--sourcetree", type='string', default=None, help='override sourcetree location')
        self.parser.add_option("--nocleanup", action='store_true', default=False, help='disable cleanup code')
        self.parser.add_option("--use-ntvfs", action='store_true', default=False, help='use NTVFS for the fileserver')
        self.parser.add_option("--dns-backend", type="choice",
            choices=["SAMBA_INTERNAL", "BIND9_FLATFILE", "BIND9_DLZ", "NONE"],
            help="The DNS server backend. SAMBA_INTERNAL is the builtin name server (default), " \
                 "BIND9_FLATFILE uses bind9 text database to store zone information, " \
                 "BIND9_DLZ uses samba4 AD to store zone information, " \
                 "NONE skips the DNS setup entirely (not recommended)",
            default="SAMBA_INTERNAL")

        self.opts, self.args = self.parser.parse_args()

        if not self.opts.conf:
            print("Please specify a config file with --conf")
            sys.exit(1)

        # we don't need fsync safety in these tests
        self.putenv('TDB_NO_FSYNC', '1')

        self.load_config(self.opts.conf)

        nameserver = self.get_nameserver()
        if nameserver == self.getvar('NAMED_INTERFACE_IP'):
            raise RuntimeError("old /etc/resolv.conf must not contain %s as a nameserver, this will create loops with the generated dns configuration" % nameserver)
        self.setvar('DNSSERVER', nameserver)

        self.set_skip(self.opts.skip)
        self.set_vms(self.opts.vms)

        if self.opts.list:
            self.list_steps_mode()

        if self.opts.prefix:
            self.setvar('PREFIX', self.opts.prefix)

        if self.opts.sourcetree:
            self.setvar('SOURCETREE', self.opts.sourcetree)

        if self.opts.rebase:
            self.info('rebasing')
            self.chdir('${SOURCETREE}')
            self.run_cmd('git pull --rebase')

        if self.opts.clean:
            self.info('cleaning')
            self.chdir('${SOURCETREE}/' + subdir)
            self.run_cmd('make clean')

        if self.opts.use_ntvfs:
            self.setvar('USE_NTVFS', "--use-ntvfs")
        else:
            self.setvar('USE_NTVFS', "")

        self.setvar('NAMESERVER_BACKEND', self.opts.dns_backend)

        self.setvar('DNS_FORWARDER', "--option=dns forwarder=%s" % nameserver)