summaryrefslogtreecommitdiff
path: root/source4/scripting/bin/upgradeprovision
blob: 1d58f5e2c91cbcba95de2813a222a1c0997461a2 (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
#!/usr/bin/python
#
# Copyright (C) Matthieu Patou <mat@matws.net> 2009
#
# Based on provision a Samba4 server by
# Copyright (C) Jelmer Vernooij <jelmer@samba.org> 2007-2008
# Copyright (C) Andrew Bartlett <abartlet@samba.org> 2008
#
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.


import getopt
import shutil
import optparse
import os
import sys
import random
import string
import re
import base64
import tempfile
# Find right directory when running from source tree
sys.path.insert(0, "bin/python")

from base64 import b64encode

import samba
from samba.credentials import DONT_USE_KERBEROS
from samba.auth import system_session, admin_session
from samba import Ldb, DS_DOMAIN_FUNCTION_2000, DS_DOMAIN_FUNCTION_2003, DS_DOMAIN_FUNCTION_2008, DS_DC_FUNCTION_2008_R2
from ldb import SCOPE_SUBTREE, SCOPE_ONELEVEL, SCOPE_BASE, LdbError
import ldb
import samba.getopt as options
from samba.samdb import SamDB
from samba import param
from samba import glue
from samba.misc import messageEltFlagToString
from samba.provision import  ProvisionNames,provision_paths_from_lp,find_setup_dir,FILL_FULL,provision, get_domain_descriptor, get_config_descriptor, secretsdb_self_join
from samba.provisionexceptions import ProvisioningError
from samba.schema import get_dnsyntax_attributes, get_linked_attributes, Schema, get_schema_descriptor
from samba.dcerpc import misc, security
from samba.ndr import ndr_pack, ndr_unpack
from samba.dcerpc.misc import SEC_CHAN_BDC

never=0
replace=2^ldb.FLAG_MOD_REPLACE
add=2^ldb.FLAG_MOD_ADD
delete=2^ldb.FLAG_MOD_DELETE

#Errors are always logged
ERROR = 	-1
SIMPLE = 	0x00
CHANGE = 	0x01
CHANGESD = 	0x02
GUESS = 	0x04
PROVISION =	0x08
CHANGEALL =	0xff

# Attributes that are never copied from the reference provision (even if they
# do not exist in the destination object).
# This is most probably because they are populated automatcally when object is
# created
# This also apply to imported object from reference provision
hashAttrNotCopied = { 	"dn": 1,"whenCreated": 1,"whenChanged": 1,"objectGUID": 1,"replPropertyMetaData": 1,"uSNChanged": 1,
						"uSNCreated": 1,"parentGUID": 1,"objectCategory": 1,"distinguishedName": 1,
						"showInAdvancedViewOnly": 1,"instanceType": 1, "cn": 1, "msDS-Behavior-Version":1, "nextRid":1,
						"nTMixedDomain": 1,"versionNumber":1, "lmPwdHistory":1, "pwdLastSet": 1, "ntPwdHistory":1, "unicodePwd":1,
						"dBCSPwd":1,"supplementalCredentials":1,"gPCUserExtensionNames":1, "gPCMachineExtensionNames":1,
						"maxPwdAge":1, "mail":1, "secret":1,"possibleInferiors":1, "sAMAccountType":1}

# Usually for an object that already exists we do not overwrite attributes as
# they might have been changed for good reasons. Anyway for a few of them it's
# mandatory to replace them otherwise the provision will be broken somehow.
hashOverwrittenAtt = {	"prefixMap": replace, "systemMayContain": replace,"systemOnly":replace, "searchFlags":replace,
						"mayContain":replace,  "systemFlags":replace,"description":replace,
						"oEMInformation":replace, "operatingSystemVersion":replace, "adminPropertyPages":replace,
						"defaultSecurityDescriptor": replace,"wellKnownObjects":replace,"privilege":delete,"groupType":replace,
						"rIDAvailablePool": never}


backlinked = []
dn_syntax_att = []
def define_what_to_log(opts):
	what = 0
	if opts.debugchange:
		what = what | CHANGE
	if opts.debugchangesd:
		what = what | CHANGESD
	if opts.debugguess:
		what = what | GUESS
	if opts.debugprovision:
		what = what | PROVISION
	if opts.debugall:
		what = what | CHANGEALL
	return what


parser = optparse.OptionParser("provision [options]")
sambaopts = options.SambaOptions(parser)
parser.add_option_group(sambaopts)
parser.add_option_group(options.VersionOptions(parser))
credopts = options.CredentialsOptions(parser)
parser.add_option_group(credopts)
parser.add_option("--setupdir", type="string", metavar="DIR",
					help="directory with setup files")
parser.add_option("--debugprovision", help="Debug provision", action="store_true")
parser.add_option("--debugguess", help="Print information on what is different but won't be changed", action="store_true")
parser.add_option("--debugchange", help="Print information on what is different but won't be changed", action="store_true")
parser.add_option("--debugchangesd", help="Print information security descriptors differences", action="store_true")
parser.add_option("--debugall", help="Print all available information (very verbose)", action="store_true")
parser.add_option("--full", help="Perform full upgrade of the samdb (schema, configuration, new objects, ...", action="store_true")

opts = parser.parse_args()[0]

whatToLog = define_what_to_log(opts)

def messageprovision(text):
	"""print a message if quiet is not set."""
	if opts.debugprovision or opts.debugall:
		print text

def message(what,text):
	"""print a message if quiet is not set."""
	if (whatToLog & what) or (what <= 0 ):
		print text

if len(sys.argv) == 1:
	opts.interactive = True
lp = sambaopts.get_loadparm()
smbconf = lp.configfile

creds = credopts.get_credentials(lp)
creds.set_kerberos_state(DONT_USE_KERBEROS)
setup_dir = opts.setupdir
if setup_dir is None:
    setup_dir = find_setup_dir()

session = system_session()

# simple helper to allow back and forth rename
def identic_rename(ldbobj,dn):
	(before,sep,after)=str(dn).partition('=')
	ldbobj.rename(dn,ldb.Dn(ldbobj,"%s=foo%s"%(before,after)))
	ldbobj.rename(ldb.Dn(ldbobj,"%s=foo%s"%(before,after)),dn)

# Create an array of backlinked attributes
def populate_backlink(newpaths,creds,session,schemadn):
	newsam_ldb = Ldb(newpaths.samdb, session_info=session, credentials=creds,lp=lp)
	linkedAttHash = get_linked_attributes(ldb.Dn(newsam_ldb,str(schemadn)),newsam_ldb)
	backlinked.extend(linkedAttHash.values())

# Create an array of  attributes with a dn synthax (2.5.5.1)
def populate_dnsyntax(newpaths,creds,session,schemadn):
	newsam_ldb = Ldb(newpaths.samdb, session_info=session, credentials=creds,lp=lp)
	res = newsam_ldb.search(expression="(attributeSyntax=2.5.5.1)",base=ldb.Dn(newsam_ldb,str(schemadn)), scope=SCOPE_SUBTREE, attrs=["lDAPDisplayName"])
	for elem in res:
		dn_syntax_att.append(elem["lDAPDisplayName"])

# Get Paths for important objects (ldb, keytabs ...)
def get_paths(targetdir=None,smbconf=None):
	if targetdir is not None:
		if (not os.path.exists(os.path.join(targetdir, "etc"))):
			os.makedirs(os.path.join(targetdir, "etc"))
		smbconf = os.path.join(targetdir, "etc", "smb.conf")
	if smbconf is None:
			smbconf = param.default_path()

	if not os.path.exists(smbconf):
		message(ERROR,"Unable to find smb.conf ..")
		parser.print_usage()
		sys.exit(1)

	lp = param.LoadParm()
	lp.load(smbconf)
# Normally we need the domain name for this function but for our needs it's
# pointless
	paths = provision_paths_from_lp(lp,"foo")
	return paths


def sanitychecks(credentials,session_info,names,paths):
	sam_ldb = Ldb(paths.samdb, session_info=session, credentials=creds,lp=lp,options=["modules:samba_dsdb"])
	# First update the SD for the rootdn
	sam_ldb.set_session_info(session)
	res = sam_ldb.search(expression="objectClass=ntdsdsa",base=str(names.configdn), scope=SCOPE_SUBTREE,attrs=["dn"],controls=["search_options:1:2"])
	if len(res) == 0:
		print "No DC found, your provision is most probalby hardly broken !"
		return 0
	elif len(res) != 1:
		print "Found %d domain controllers, for the moment upgradeprovision is not able to handle upgrade on \
domain with more than one DC, please demote the other DC before upgrading"%len(res)
		return 0
	else:
		return 1


# This function guesses (fetches) informations needed to make a fresh provision
# from the current provision
# It includes: realm, workgroup, partitions, netbiosname, domain guid, ...
def guess_names_from_current_provision(credentials,session_info,paths):
	lp = param.LoadParm()
	lp.load(paths.smbconf)
	names = ProvisionNames()
	# NT domain, kerberos realm, root dn, domain dn, domain dns name
	names.domain = string.upper(lp.get("workgroup"))
	names.realm = lp.get("realm")
	basedn = "DC=" + names.realm.replace(".",",DC=")
	names.dnsdomain = names.realm
	names.realm = string.upper(names.realm)
	# netbiosname
	secrets_ldb = Ldb(paths.secrets, session_info=session_info, credentials=credentials,lp=lp, options=["modules:samba_secrets"])
	# Get the netbiosname first (could be obtained from smb.conf in theory)
	attrs = ["sAMAccountName"]
	res = secrets_ldb.search(expression="(flatname=%s)"%names.domain,base="CN=Primary Domains", scope=SCOPE_SUBTREE, attrs=attrs)
	names.netbiosname = str(res[0]["sAMAccountName"]).replace("$","")

	names.smbconf = smbconf
	# It's important here to let ldb load with the old module or it's quite
	# certain that the LDB won't load ...
	samdb = Ldb(paths.samdb, session_info=session_info,
		    credentials=credentials, lp=lp, options=["modules:samba_dsdb"])

	# That's a bit simplistic but it's ok as long as we have only 3
	# partitions
	attrs2 = ["defaultNamingContext", "schemaNamingContext","configurationNamingContext","rootDomainNamingContext"]
	current = samdb.search(expression="(objectClass=*)",base="", scope=SCOPE_BASE, attrs=attrs2)

	names.configdn = current[0]["configurationNamingContext"]
	configdn = str(names.configdn)
	names.schemadn = current[0]["schemaNamingContext"]
	if not (ldb.Dn(samdb, basedn) == (ldb.Dn(samdb, current[0]["defaultNamingContext"][0]))):
		raise ProvisioningError(("basedn in %s (%s) and from %s (%s) is not the same ..." % (paths.samdb, str(current[0]["defaultNamingContext"][0]), paths.smbconf, basedn)))

	names.domaindn=current[0]["defaultNamingContext"]
	names.rootdn=current[0]["rootDomainNamingContext"]
	# default site name
	attrs3 = ["cn"]
	res3= samdb.search(expression="(objectClass=*)",base="CN=Sites,"+configdn, scope=SCOPE_ONELEVEL, attrs=attrs3)
	names.sitename = str(res3[0]["cn"])

	# dns hostname and server dn
	attrs4 = ["dNSHostName"]
	res4= samdb.search(expression="(CN=%s)"%names.netbiosname,base="OU=Domain Controllers,"+basedn, \
						scope=SCOPE_ONELEVEL, attrs=attrs4)
	names.hostname = str(res4[0]["dNSHostName"]).replace("."+names.dnsdomain,"")

	server_res = samdb.search(expression="serverReference=%s"%res4[0].dn, attrs=[], base=configdn)
	names.serverdn = server_res[0].dn

	# invocation id/objectguid
	res5 = samdb.search(expression="(objectClass=*)",base="CN=NTDS Settings,%s" % str(names.serverdn), scope=SCOPE_BASE, attrs=["invocationID","objectGUID"])
	names.invocation = str(ndr_unpack( misc.GUID,res5[0]["invocationId"][0]))
	names.ntdsguid = str(ndr_unpack( misc.GUID,res5[0]["objectGUID"][0]))

	# domain guid/sid
	attrs6 = ["objectGUID", "objectSid","msDS-Behavior-Version" ]
	res6 = samdb.search(expression="(objectClass=*)",base=basedn, scope=SCOPE_BASE, attrs=attrs6)
	names.domainguid = str(ndr_unpack( misc.GUID,res6[0]["objectGUID"][0]))
	names.domainsid = ndr_unpack( security.dom_sid,res6[0]["objectSid"][0])
	if res6[0].get("msDS-Behavior-Version") == None or int(res6[0]["msDS-Behavior-Version"][0]) < DS_DOMAIN_FUNCTION_2000:
		names.domainlevel = DS_DOMAIN_FUNCTION_2000
	else:
		names.domainlevel = int(res6[0]["msDS-Behavior-Version"][0])

	# policy guid
	attrs7 = ["cn","displayName"]
	res7 = samdb.search(expression="(displayName=Default Domain Policy)",base="CN=Policies,CN=System,"+basedn, \
							scope=SCOPE_ONELEVEL, attrs=attrs7)
	names.policyid = str(res7[0]["cn"]).replace("{","").replace("}","")
	# dc policy guid
	attrs8 = ["cn","displayName"]
	res8 = samdb.search(expression="(displayName=Default Domain Controllers Policy)",base="CN=Policies,CN=System,"+basedn, \
							scope=SCOPE_ONELEVEL, attrs=attrs7)
	if len(res8) == 1:
		names.policyid_dc = str(res8[0]["cn"]).replace("{","").replace("}","")
	else:
		names.policyid_dc = None


	return names

# Debug a little bit
def print_names(names):
	message(GUESS, "rootdn      :"+str(names.rootdn))
	message(GUESS, "configdn    :"+str(names.configdn))
	message(GUESS, "schemadn    :"+str(names.schemadn))
	message(GUESS, "serverdn    :"+str(names.serverdn))
	message(GUESS, "netbiosname :"+names.netbiosname)
	message(GUESS, "defaultsite :"+names.sitename)
	message(GUESS, "dnsdomain   :"+names.dnsdomain)
	message(GUESS, "hostname    :"+names.hostname)
	message(GUESS, "domain      :"+names.domain)
	message(GUESS, "realm       :"+names.realm)
	message(GUESS, "invocationid:"+names.invocation)
	message(GUESS, "policyguid  :"+names.policyid)
	message(GUESS, "policyguiddc:"+str(names.policyid_dc))
	message(GUESS, "domainsid   :"+str(names.domainsid))
	message(GUESS, "domainguid  :"+names.domainguid)
	message(GUESS, "ntdsguid    :"+names.ntdsguid)
	message(GUESS, "domainlevel :"+str(names.domainlevel))

# Create a fresh new reference provision
# This provision will be the reference for knowing what has changed in the
# since the latest upgrade in the current provision
def newprovision(names,setup_dir,creds,session,smbconf):
	message(SIMPLE, "Creating a reference provision")
	provdir=tempfile.mkdtemp(dir=paths.private_dir, prefix="referenceprovision")
	if os.path.isdir(provdir):
		rmall(provdir)
	logstd=os.path.join(provdir,"log.std")
	os.chdir(os.path.join(setup_dir,".."))
	os.mkdir(provdir)
	os.close(2)
	sys.stderr = open("%s/provision.log"%provdir, "w")
	message(PROVISION, "Reference provision stored in %s"%provdir)
	message(PROVISION, "STDERR message of provision will be logged in %s/provision.log"%provdir)
	sys.stderr = open("/dev/stdout", "w")
	provision(setup_dir, messageprovision,
		session, creds, smbconf=smbconf, targetdir=provdir,
		samdb_fill=FILL_FULL, realm=names.realm, domain=names.domain,
		domainguid=names.domainguid, domainsid=str(names.domainsid),ntdsguid=names.ntdsguid,
		policyguid=names.policyid,policyguid_dc=names.policyid_dc,hostname=names.netbiosname,
		hostip=None, hostip6=None,
		invocationid=names.invocation, adminpass=None,
		krbtgtpass=None, machinepass=None,
		dnspass=None, root=None, nobody=None,
		wheel=None, users=None,
		serverrole="domain controller",
		ldap_backend_extra_port=None,
		backend_type=None,
		ldapadminpass=None,
		ol_mmr_urls=None,
		slapd_path=None,
		setup_ds_path=None,
		nosync=None,
		dom_for_fun_level=names.domainlevel,
		ldap_dryrun_mode=None,useeadb=True)
	return provdir

# This function sorts two DNs in the lexicographical order and put higher level
# DN before.
# So given the dns cn=bar,cn=foo and cn=foo the later will be return as smaller
# (-1) as it has less level
def dn_sort(x,y):
	p = re.compile(r'(?<!\\),')
	tab1 = p.split(str(x))
	tab2 = p.split(str(y))
	min = 0
	if (len(tab1) > len(tab2)):
		min = len(tab2)
	elif (len(tab1) < len(tab2)):
		min = len(tab1)
	else:
		min = len(tab1)
	len1=len(tab1)-1
	len2=len(tab2)-1
	space = " "
	# Note: python range go up to upper limit but do not include it
	for i in range(0,min):
		ret=cmp(tab1[len1-i],tab2[len2-i])
		if(ret != 0):
			return ret
		else:
			if(i==min-1):
				if(len1==len2):
					message(ERROR,"PB PB PB"+space.join(tab1)+" / "+space.join(tab2))
				if(len1>len2):
					return 1
				else:
					return -1
	return ret

# Check for security descriptors modifications return 1 if it is and 0 otherwise
# it also populate hash structure for later use in the upgrade process
def handle_security_desc(ischema,att,msgElt,hashallSD,old,new):
	if ischema == 1 and att == "defaultSecurityDescriptor"  and msgElt.flags() == ldb.FLAG_MOD_REPLACE:
		hashSD = {}
		hashSD["oldSD"] = old[0][att]
		hashSD["newSD"] = new[0][att]
		hashallSD[str(old[0].dn)] = hashSD
		return 0
	if att == "nTSecurityDescriptor"  and msgElt.flags() == ldb.FLAG_MOD_REPLACE:
		if ischema == 0:
			hashSD = {}
			hashSD["oldSD"] =  ndr_unpack(security.descriptor,str(old[0][att]))
			hashSD["newSD"] =  ndr_unpack(security.descriptor,str(new[0][att]))
			hashallSD[str(old[0].dn)] = hashSD
		return 1
	return 0

# Handle special cases ... That's when we want to update a particular attribute
# only, e.g. if it has a certain value or if it's for a certain object or
# a class of object.
# It can be also if we want to do a merge of value instead of a simple replace
def handle_special_case(att,delta,new,old,ischema):
	flag = delta.get(att).flags()
	if (att == "gPLink" or att == "gPCFileSysPath") and flag ==  ldb.FLAG_MOD_REPLACE and str(new[0].dn).lower() == str(old[0].dn).lower():
		delta.remove(att)
		return 1
	if att == "forceLogoff":
		ref=0x8000000000000000
		oldval=int(old[0][att][0])
		newval=int(new[0][att][0])
		ref == old and ref == abs(new)
		return 1
	if (att == "adminDisplayName" or att == "adminDescription") and ischema:
		return 1
	if (str(old[0].dn) == "CN=Samba4-Local-Domain,%s"%(str(names.schemadn)) and att == "defaultObjectCategory" and flag  == ldb.FLAG_MOD_REPLACE):
		return 1
#	if (str(old[0].dn) == "CN=S-1-5-11,CN=ForeignSecurityPrincipals,%s"%(str(names.rootdn)) and att == "description" and flag  == ldb.FLAG_MOD_DELETE):
#		return 1
	if (str(old[0].dn) == "CN=Title,%s"%(str(names.schemadn)) and att == "rangeUpper" and flag  == ldb.FLAG_MOD_REPLACE):
		return 1
	if ( (att == "member" or att == "servicePrincipalName") and flag  == ldb.FLAG_MOD_REPLACE):

		hash = {}
		newval = []
		changeDelta=0
		for elem in old[0][att]:
			hash[str(elem)]=1
			newval.append(str(elem))

		for elem in new[0][att]:
			if not hash.has_key(str(elem)):
				changeDelta=1
				newval.append(str(elem))
		if changeDelta == 1:
			delta[att] = ldb.MessageElement(newval, ldb.FLAG_MOD_REPLACE, att)
		else:
			delta.remove(att)
		return 1
	if (str(old[0].dn) == "%s"%(str(names.rootdn)) and att == "subRefs" and flag  == ldb.FLAG_MOD_REPLACE):
		return 1
	if str(delta.dn).endswith("CN=DisplaySpecifiers,%s"%names.configdn):
		return 1
	return 0

def update_secrets(newpaths,paths,creds,session):
	message(SIMPLE,"update secrets.ldb")
	newsecrets_ldb = Ldb(newpaths.secrets, session_info=session, credentials=creds,lp=lp)
	secrets_ldb = Ldb(paths.secrets, session_info=session, credentials=creds,lp=lp, options=["modules:samba_secrets"])
	reference = newsecrets_ldb.search(expression="dn=@MODULES",base="", scope=SCOPE_SUBTREE)
	current = secrets_ldb.search(expression="dn=@MODULES",base="", scope=SCOPE_SUBTREE)
	delta = secrets_ldb.msg_diff(current[0],reference[0])
	delta.dn = current[0].dn
	secrets_ldb.modify(delta)

	newsecrets_ldb = Ldb(newpaths.secrets, session_info=session, credentials=creds,lp=lp)
	secrets_ldb = Ldb(paths.secrets, session_info=session, credentials=creds,lp=lp)
	reference = newsecrets_ldb.search(expression="objectClass=top",base="", scope=SCOPE_SUBTREE,attrs=["dn"])
	current = secrets_ldb.search(expression="objectClass=top",base="", scope=SCOPE_SUBTREE,attrs=["dn"])
	hash_new = {}
	hash = {}
	listMissing = []
	listPresent = []

	empty = ldb.Message()
	for i in range(0,len(reference)):
		hash_new[str(reference[i]["dn"]).lower()] = reference[i]["dn"]

	# Create a hash for speeding the search of existing object in the
	# current provision
	for i in range(0,len(current)):
		hash[str(current[i]["dn"]).lower()] = current[i]["dn"]

	for k in hash_new.keys():
		if not hash.has_key(k):
			listMissing.append(hash_new[k])
		else:
			listPresent.append(hash_new[k])
	for entry in listMissing:
		reference = newsecrets_ldb.search(expression="dn=%s"%entry,base="", scope=SCOPE_SUBTREE)
		current = secrets_ldb.search(expression="dn=%s"%entry,base="", scope=SCOPE_SUBTREE)
		delta = secrets_ldb.msg_diff(empty,reference[0])
		for att in hashAttrNotCopied.keys():
			delta.remove(att)
		message(CHANGE,"Entry %s is missing from secrets.ldb"%reference[0].dn)
		for att in delta:
			message(CHANGE," Adding attribute %s"%att)
		delta.dn = reference[0].dn
		secrets_ldb.add(delta)

	for entry in listPresent:
		reference = newsecrets_ldb.search(expression="dn=%s"%entry,base="", scope=SCOPE_SUBTREE)
		current = secrets_ldb.search(expression="dn=%s"%entry,base="", scope=SCOPE_SUBTREE)
		delta = secrets_ldb.msg_diff(current[0],reference[0])
		i=0
		for att in hashAttrNotCopied.keys():
			delta.remove(att)
		for att in delta:
			i = i + 1

			if att == "name":
				message(CHANGE,"Found attribute name on  %s, must rename the DN "%(current[0].dn))
				identic_rename(secrets_ldb,reference[0].dn)
			else:
				delta.remove(att)


	for entry in listPresent:
		reference = newsecrets_ldb.search(expression="dn=%s"%entry,base="", scope=SCOPE_SUBTREE)
		current = secrets_ldb.search(expression="dn=%s"%entry,base="", scope=SCOPE_SUBTREE)
		delta = secrets_ldb.msg_diff(current[0],reference[0])
		i=0
		for att in hashAttrNotCopied.keys():
			delta.remove(att)
		for att in delta:
			i = i + 1
			if att != "dn":
				message(CHANGE," Adding/Changing attribute %s to %s"%(att,current[0].dn))

		delta.dn = current[0].dn
		secrets_ldb.modify(delta)

def dump_denied_change(dn,att,flagtxt,current,reference):
	message(CHANGE, "dn= "+str(dn)+" "+att+" with flag "+flagtxt+" is not allowed to be changed/removed, I discard this change ...")
	if att != "objectSid" :
		i = 0
		for e in range(0,len(current)):
			message(CHANGE,"old %d : %s"%(i,str(current[e])))
			i=i+1
		if reference != None:
			i = 0
			for e in range(0,len(reference)):
					message(CHANGE,"new %d : %s"%(i,str(reference[e])))
					i=i+1
	else:
		message(CHANGE,"old : %s"%str(ndr_unpack( security.dom_sid,current[0])))
		message(CHANGE,"new : %s"%str(ndr_unpack( security.dom_sid,reference[0])))

#This function is for doing case by case treatment on special object

def handle_special_add(sam_ldb,dn,names):
	dntoremove=None
	if str(dn).lower() == ("CN=Certificate Service DCOM Access,CN=Builtin,%s"%names.rootdn).lower():
		#This entry was misplaced lets remove it if it exists
		dntoremove="CN=Certificate Service DCOM Access,CN=Users,%s"%names.rootdn

	if str(dn).lower() == ("CN=Cryptographic Operators,CN=Builtin,%s"%names.rootdn).lower():
		#This entry was misplaced lets remove it if it exists
		dntoremove="CN=Cryptographic Operators,CN=Users,%s"%names.rootdn

	if str(dn).lower() == ("CN=Event Log Readers,CN=Builtin,%s"%names.rootdn).lower():
		#This entry was misplaced lets remove it if it exists
		dntoremove="CN=Event Log Readers,CN=Users,%s"%names.rootdn

	if dntoremove != None:
		res = sam_ldb.search(expression="objectClass=*",base=dntoremove, scope=SCOPE_BASE,attrs=["dn"],controls=["search_options:1:2"])
		if len(res) > 0:
			message(CHANGE,"Existing object %s must be replaced by %s, removing old object"%(dntoremove,str(dn)))
			sam_ldb.delete(res[0]["dn"])

#Check if the one of the dn in the listdn will be created after the current dn
#hash is indexed by dn to be created, with each key is associated the creation order
#First dn to be created has the creation order 0, second has 1, ...
#Index contain the current creation order
def check_dn_nottobecreated(hash,index,listdn):
	if listdn == None:
		return None
	for dn in listdn:
		key = str(dn).lower()
		if hash.has_key(key) and hash[key] > index:
			return str(dn)
	return None

#This function tries to add the missing object "dn" if this object depends on some others
# the function returns 0, if the object was created 1 is returned
def add_missing_object(newsam_ldb,sam_ldb,dn,names,basedn,hash,index):
	handle_special_add(sam_ldb,dn,names)
	reference = newsam_ldb.search(expression="dn=%s"%(str(dn)),base=basedn,
					scope=SCOPE_SUBTREE,controls=["search_options:1:2"])
	empty = ldb.Message()
	delta = sam_ldb.msg_diff(empty,reference[0])
	for att in hashAttrNotCopied.keys():
		delta.remove(att)
	for att in backlinked:
		delta.remove(att)
	depend_on_yettobecreated = None
	for att in dn_syntax_att:
		depend_on_yet_tobecreated = check_dn_nottobecreated(hash,index,delta.get(str(att)))
		if depend_on_yet_tobecreated != None:
			message(CHANGE,"Object %s depends on %s in attribute %s, delaying the creation"
							%(str(dn),depend_on_yet_tobecreated,str(att)))
			return 0
	delta.dn = dn
	message(CHANGE,"Object %s will be added"%dn)
	sam_ldb.add(delta,["relax:0"])
	return 1

def gen_dn_index_hash(listMissing):
	hash = {}
	for i in range(0,len(listMissing)):
		hash[str(listMissing[i]).lower()] = i
	return hash

def add_missing_entries(newsam_ldb,sam_ldb,names,basedn,list):
	listMissing = []
	listDefered = list

	while(len(listDefered) != len(listMissing) and len(listDefered) > 0):
		index = 0
		listMissing = listDefered
		listDefered = []
		hashMissing = gen_dn_index_hash(listMissing)
		for dn in listMissing:
			ret =  add_missing_object(newsam_ldb,sam_ldb,dn,names,basedn,hashMissing,index)
			index = index + 1
			if ret == 0:
				#DN can't be created because it depends on some other DN in the list
				listDefered.append(dn)
	if len(listDefered) != 0:
		raise ProvisioningError("Unable to insert missing elements: circular references")




# Check difference between the current provision and the reference provision.
# It looks for all objects which base DN is name. If ischema is "false" then
# the scan is done in cross partition mode.
# If "ischema" is true, then special handling is done for dealing with schema
def check_diff_name(newpaths,paths,creds,session,basedn,names,ischema):
	hash_new = {}
	hash = {}
	hashallSD = {}
	listMissing = []
	listPresent = []
	reference = []
	current = []
	# Connect to the reference provision and get all the attribute in the
	# partition referred by name
	newsam_ldb = Ldb(newpaths.samdb, session_info=session, credentials=creds,lp=lp)
	sam_ldb = Ldb(paths.samdb, session_info=session, credentials=creds,lp=lp, options=["modules:samba_dsdb"])
	sam_ldb.transaction_start()
	if ischema:
		reference = newsam_ldb.search(expression="objectClass=*",base=basedn, scope=SCOPE_SUBTREE,attrs=["dn"])
		current = sam_ldb.search(expression="objectClass=*",base=basedn, scope=SCOPE_SUBTREE,attrs=["dn"])
	else:
		reference = newsam_ldb.search(expression="objectClass=*",base=basedn, scope=SCOPE_SUBTREE,attrs=["dn"],controls=["search_options:1:2"])
		current = sam_ldb.search(expression="objectClass=*",base=basedn, scope=SCOPE_SUBTREE,attrs=["dn"],controls=["search_options:1:2"])

	sam_ldb.transaction_commit()
	# Create a hash for speeding the search of new object
	for i in range(0,len(reference)):
		hash_new[str(reference[i]["dn"]).lower()] = reference[i]["dn"]

	# Create a hash for speeding the search of existing object in the
	# current provision
	for i in range(0,len(current)):
		hash[str(current[i]["dn"]).lower()] = current[i]["dn"]

	for k in hash_new.keys():
		if not hash.has_key(k):
			print hash_new[k]
			listMissing.append(hash_new[k])
		else:
			listPresent.append(hash_new[k])

	# Sort the missing object in order to have object of the lowest level
	# first (which can be containers for higher level objects)
	listMissing.sort(dn_sort)
	listPresent.sort(dn_sort)

	if ischema:
		# The following lines (up to the for loop) is to load the up to
		# date schema into our current LDB
		# a complete schema is needed as the insertion of attributes
		# and class is done against it
		# and the schema is self validated
		# The double ldb open and schema validation is taken from the
		# initial provision script
		# it's not certain that it is really needed ....
		sam_ldb = Ldb(session_info=session, credentials=creds, lp=lp)
		schema = Schema(setup_path, names.domainsid, schemadn=basedn, serverdn=str(names.serverdn))
		# Load the schema from the one we computed earlier
		sam_ldb.set_schema_from_ldb(schema.ldb)
		# And now we can connect to the DB - the schema won't be loaded
		# from the DB
		sam_ldb.connect(paths.samdb)
	else:
		sam_ldb = Ldb(paths.samdb, session_info=session, credentials=creds,lp=lp, options=["modules:samba_dsdb"])

	sam_ldb.transaction_start()

	message(SIMPLE,"There are %d missing objects"%(len(listMissing)))
	add_missing_entries(newsam_ldb,sam_ldb,names,basedn,listMissing)
	changed = 0
	for dn in listPresent:
		reference = newsam_ldb.search(expression="dn=%s"%(str(dn)),base=basedn, scope=SCOPE_SUBTREE,controls=["search_options:1:2"])
		current = sam_ldb.search(expression="dn=%s"%(str(dn)),base=basedn, scope=SCOPE_SUBTREE,controls=["search_options:1:2"])
		if ((str(current[0].dn) != str(reference[0].dn)) and (str(current[0].dn).upper() == str(reference[0].dn).upper())):
			message(CHANGE,"Name are the same but case change, let's rename %s to %s"%(str(current[0].dn),str(reference[0].dn)))
			identic_rename(sam_ldb,reference[0].dn)
			current = sam_ldb.search(expression="dn=%s"%(str(dn)),base=basedn, scope=SCOPE_SUBTREE,controls=["search_options:1:2"])

		delta = sam_ldb.msg_diff(current[0],reference[0])
		for att in hashAttrNotCopied.keys():
			delta.remove(att)
		for att in backlinked:
			delta.remove(att)
		delta.remove("parentGUID")
		nb = 0
		
		for att in delta:
			msgElt = delta.get(att)
			if att == "dn":
				continue
			if att == "name":
				delta.remove(att)
				continue
			if handle_security_desc(ischema,att,msgElt,hashallSD,current,reference):
				delta.remove(att)
				continue
			if (not hashOverwrittenAtt.has_key(att) or not (hashOverwrittenAtt.get(att)&2^msgElt.flags())):
				if  hashOverwrittenAtt.has_key(att) and hashOverwrittenAtt.get(att)==never:
					delta.remove(att)
					continue
				if  handle_special_case(att,delta,reference,current,ischema)==0 and msgElt.flags()!=ldb.FLAG_MOD_ADD:
					i = 0
					if opts.debugchange or opts.debugall:
						try:
							dump_denied_change(dn,att,messageEltFlagToString(msgElt.flags()),current[0][att],reference[0][att])
						except:
							dump_denied_change(dn,att,messageEltFlagToString(msgElt.flags()),current[0][att],None)
					delta.remove(att)
		delta.dn = dn
		if len(delta.items()) >1:
			attributes=",".join(delta.keys())
			message(CHANGE,"%s is different from the reference one, changed attributes: %s"%(dn,attributes))
			changed = changed + 1
			sam_ldb.modify(delta)

	sam_ldb.transaction_commit()
	message(SIMPLE,"There are %d changed objects"%(changed))
	return hashallSD

# Check that SD are correct
def check_updated_sd(newpaths,paths,creds,session,names):
	newsam_ldb = Ldb(newpaths.samdb, session_info=session, credentials=creds,lp=lp)
	sam_ldb = Ldb(paths.samdb, session_info=session, credentials=creds,lp=lp)
	reference = newsam_ldb.search(expression="objectClass=*",base=str(names.rootdn), scope=SCOPE_SUBTREE,attrs=["dn","nTSecurityDescriptor"],controls=["search_options:1:2"])
	current = sam_ldb.search(expression="objectClass=*",base=str(names.rootdn), scope=SCOPE_SUBTREE,attrs=["dn","nTSecurityDescriptor"],controls=["search_options:1:2"])
	hash_new = {}
	for i in range(0,len(reference)):
		hash_new[str(reference[i]["dn"]).lower()] = ndr_unpack(security.descriptor,str(reference[i]["nTSecurityDescriptor"])).as_sddl(names.domainsid)

	for i in range(0,len(current)):
		key = str(current[i]["dn"]).lower()
		if hash_new.has_key(key):
			sddl = ndr_unpack(security.descriptor,str(current[i]["nTSecurityDescriptor"])).as_sddl(names.domainsid)
			if sddl != hash_new[key]:
				print "%s new sddl/sddl in ref"%key
				print "%s\n%s"%(sddl,hash_new[key])

# Simple update method for updating the SD that rely on the fact that nobody
# should have modified the SD
# This assumption is safe right now (alpha9) but should be removed asap
def update_sd(paths,creds,session,names):
	sam_ldb = Ldb(paths.samdb, session_info=session, credentials=creds,lp=lp,options=["modules:samba_dsdb"])
	sam_ldb.transaction_start()
	# First update the SD for the rootdn
	sam_ldb.set_session_info(session)
	res = sam_ldb.search(expression="objectClass=*",base=str(names.rootdn), scope=SCOPE_BASE,attrs=["dn","whenCreated"],controls=["search_options:1:2"])
	delta = ldb.Message()
	delta.dn = ldb.Dn(sam_ldb,str(res[0]["dn"]))
	descr = get_domain_descriptor(names.domainsid)
	delta["nTSecurityDescriptor"] = ldb.MessageElement( descr,ldb.FLAG_MOD_REPLACE,"nTSecurityDescriptor" )
	sam_ldb.modify(delta,["recalculate_sd:0"])
	# Then the config dn
	res = sam_ldb.search(expression="objectClass=*",base=str(names.configdn), scope=SCOPE_BASE,attrs=["dn","whenCreated"],controls=["search_options:1:2"])
	delta = ldb.Message()
	delta.dn = ldb.Dn(sam_ldb,str(res[0]["dn"]))
	descr = get_config_descriptor(names.domainsid)
	delta["nTSecurityDescriptor"] = ldb.MessageElement( descr,ldb.FLAG_MOD_REPLACE,"nTSecurityDescriptor" )
	sam_ldb.modify(delta,["recalculate_sd:0"])
	# Then the schema dn
	res = sam_ldb.search(expression="objectClass=*",base=str(names.schemadn), scope=SCOPE_BASE,attrs=["dn","whenCreated"],controls=["search_options:1:2"])
	delta = ldb.Message()
	delta.dn = ldb.Dn(sam_ldb,str(res[0]["dn"]))
	descr = get_schema_descriptor(names.domainsid)
	delta["nTSecurityDescriptor"] = ldb.MessageElement( descr,ldb.FLAG_MOD_REPLACE,"nTSecurityDescriptor" )
	sam_ldb.modify(delta,["recalculate_sd:0"])

	# Then the rest
	hash = {}
	res = sam_ldb.search(expression="objectClass=*",base=str(names.rootdn), scope=SCOPE_SUBTREE,attrs=["dn","whenCreated"],controls=["search_options:1:2"])
	for obj in res:
		if not (str(obj["dn"]) == str(names.rootdn) or
			str(obj["dn"]) == str(names.configdn) or \
			str(obj["dn"]) == str(names.schemadn)):
			hash[str(obj["dn"])] = obj["whenCreated"]

	listkeys = hash.keys()
	listkeys.sort(dn_sort)

	for key in listkeys:
		try:
			delta = ldb.Message()
			delta.dn = ldb.Dn(sam_ldb,key)
			delta["whenCreated"] = ldb.MessageElement( hash[key],ldb.FLAG_MOD_REPLACE,"whenCreated" )
			sam_ldb.modify(delta,["recalculate_sd:0"])
		except:
			sam_ldb.transaction_cancel()
			res = sam_ldb.search(expression="objectClass=*",base=str(names.rootdn), scope=SCOPE_SUBTREE,attrs=["dn","nTSecurityDescriptor"],controls=["search_options:1:2"])
			print "bad stuff" +ndr_unpack(security.descriptor,str(res[0]["nTSecurityDescriptor"])).as_sddl(names.domainsid)
			return
	sam_ldb.transaction_commit()

def rmall(topdir):
	for root, dirs, files in os.walk(topdir, topdown=False):
		for name in files:
			os.remove(os.path.join(root, name))
		for name in dirs:
			os.rmdir(os.path.join(root, name))
	os.rmdir(topdir)


def update_basesamdb(newpaths,paths,names):
	message(SIMPLE,"Copy samdb")
	shutil.copy(newpaths.samdb,paths.samdb)

	message(SIMPLE,"Update partitions filename if needed")
	schemaldb=os.path.join(paths.private_dir,"schema.ldb")
	configldb=os.path.join(paths.private_dir,"configuration.ldb")
	usersldb=os.path.join(paths.private_dir,"users.ldb")
	samldbdir=os.path.join(paths.private_dir,"sam.ldb.d")

	if not os.path.isdir(samldbdir):
		os.mkdir(samldbdir)
		os.chmod(samldbdir,0700)
	if os.path.isfile(schemaldb):
		shutil.copy(schemaldb,os.path.join(samldbdir,"%s.ldb"%str(names.schemadn).upper()))
		os.remove(schemaldb)
	if os.path.isfile(usersldb):
		shutil.copy(usersldb,os.path.join(samldbdir,"%s.ldb"%str(names.rootdn).upper()))
		os.remove(usersldb)
	if os.path.isfile(configldb):
		shutil.copy(configldb,os.path.join(samldbdir,"%s.ldb"%str(names.configdn).upper()))
		os.remove(configldb)

def update_privilege(newpaths,paths):
	message(SIMPLE,"Copy privilege")
	shutil.copy(os.path.join(newpaths.private_dir,"privilege.ldb"),os.path.join(paths.private_dir,"privilege.ldb"))

# For each partition check the differences
def update_samdb(newpaths,paths,creds,session,names):

	message(SIMPLE, "Doing schema update")
	hashdef = check_diff_name(newpaths,paths,creds,session,str(names.schemadn),names,1)
	message(SIMPLE,"Done with schema update")
	message(SIMPLE,"Scanning whole provision for updates and additions")
	hashSD = check_diff_name(newpaths,paths,creds,session,str(names.rootdn),names,0)
	message(SIMPLE,"Done with scanning")

def update_machine_account_password(paths,creds,session,names):

	secrets_ldb = Ldb(paths.secrets, session_info=session, credentials=creds,lp=lp)
	secrets_ldb.transaction_start()
	secrets_msg = secrets_ldb.search(expression=("samAccountName=%s$" % names.netbiosname), attrs=["secureChannelType"])
	sam_ldb = Ldb(paths.samdb, session_info=session, credentials=creds,lp=lp)
	sam_ldb.transaction_start()
	if int(secrets_msg[0]["secureChannelType"][0]) == SEC_CHAN_BDC:
		res = sam_ldb.search(expression=("samAccountName=%s$" % names.netbiosname), attrs=[])
		assert(len(res) == 1)

		msg = ldb.Message(res[0].dn)
		machinepass = glue.generate_random_password(128, 255)
		msg["userPassword"] = ldb.MessageElement(machinepass, ldb.FLAG_MOD_REPLACE, "userPassword")
		sam_ldb.modify(msg)

		res = sam_ldb.search(expression=("samAccountName=%s$" % names.netbiosname),
				     attrs=["msDs-keyVersionNumber"])
		assert(len(res) == 1)
		kvno = int(str(res[0]["msDs-keyVersionNumber"]))

		secretsdb_self_join(secrets_ldb, domain=names.domain,
				    realm=names.realm,
				    domainsid=names.domainsid,
				    dnsdomain=names.dnsdomain,
				    netbiosname=names.netbiosname,
				    machinepass=machinepass,
				    key_version_number=kvno,
				    secure_channel_type=int(secrets_msg[0]["secureChannelType"][0]))
		sam_ldb.transaction_prepare_commit()
		secrets_ldb.transaction_prepare_commit()
		sam_ldb.transaction_commit()
		secrets_ldb.transaction_commit()
	else:
		secrets_ldb.transaction_cancel()

# From here start the big steps of the program
# First get files paths
paths=get_paths(smbconf=smbconf)
paths.setup = setup_dir
def setup_path(file):
	return os.path.join(setup_dir, file)
# Guess all the needed names (variables in fact) from the current
# provision.
names = guess_names_from_current_provision(creds,session,paths)
if not sanitychecks(creds,session,names,paths):
	print "Sanity checks for the upgrade fails, checks messages and correct it before rerunning upgradeprovision"
	sys.exit(1)
# Let's see them
print_names(names)
# With all this information let's create a fresh new provision used as reference
provisiondir = newprovision(names,setup_dir,creds,session,smbconf)
# Get file paths of this new provision
newpaths = get_paths(targetdir=provisiondir)
populate_backlink(newpaths,creds,session,names.schemadn)
populate_dnsyntax(newpaths,creds,session,names.schemadn)
# Check the difference
update_basesamdb(newpaths,paths,names)

if opts.full:
	update_samdb(newpaths,paths,creds,session,names)
update_secrets(newpaths,paths,creds,session)
update_privilege(newpaths,paths)
update_machine_account_password(paths,creds,session,names)
# SD should be created with admin but as some previous acl were so wrong that admin can't modify them we have first
# to recreate them with the good form but with system account and then give the ownership to admin ...
admin_session_info = admin_session(lp, str(names.domainsid))
message(SIMPLE,"Updating SD")
update_sd(paths,creds,session,names)
update_sd(paths,creds,admin_session_info,names)
check_updated_sd(newpaths,paths,creds,session,names)
message(SIMPLE,"Upgrade finished !")
# remove reference provision now that everything is done !
rmall(provisiondir)