4 # Copyright (C) Matthieu Patou <mat@matws.net> 2009 - 2010
6 # Based on provision a Samba4 server by
7 # Copyright (C) Jelmer Vernooij <jelmer@samba.org> 2007-2008
8 # Copyright (C) Andrew Bartlett <abartlet@samba.org> 2008
11 # This program is free software; you can redistribute it and/or modify
12 # it under the terms of the GNU General Public License as published by
13 # the Free Software Foundation; either version 3 of the License, or
14 # (at your option) any later version.
16 # This program is distributed in the hope that it will be useful,
17 # but WITHOUT ANY WARRANTY; without even the implied warranty of
18 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 # GNU General Public License for more details.
21 # You should have received a copy of the GNU General Public License
22 # along with this program. If not, see <http://www.gnu.org/licenses/>.
33 # Allow to run from s4 source directory (without installing samba)
34 sys.path.insert(0, "bin/python")
38 import samba.getopt as options
40 from base64 import b64encode
41 from samba.credentials import DONT_USE_KERBEROS
42 from samba.auth import system_session, admin_session
43 from ldb import (SCOPE_SUBTREE, SCOPE_BASE,
44 FLAG_MOD_REPLACE, FLAG_MOD_ADD, FLAG_MOD_DELETE,
45 MessageElement, Message, Dn)
46 from samba import param, dsdb, Ldb
47 from samba.provision import (find_setup_dir, get_domain_descriptor,
48 get_config_descriptor,
49 ProvisioningError, get_last_provision_usn,
50 get_max_usn, update_provision_usn)
51 from samba.schema import get_linked_attributes, Schema, get_schema_descriptor
52 from samba.dcerpc import security, drsblobs, xattr
53 from samba.ndr import ndr_unpack
54 from samba.upgradehelpers import (dn_sort, get_paths, newprovision,
55 find_provision_key_parameters, get_ldbs,
56 usn_in_range, identic_rename, get_diff_sddls,
57 update_secrets, CHANGE, ERROR, SIMPLE,
58 CHANGEALL, GUESS, CHANGESD, PROVISION,
59 updateOEMInfo, getOEMInfo, update_gpo,
60 delta_update_basesamdb, update_policyids,
61 update_machine_account_password,
62 search_constructed_attrs_stored,
64 increment_calculated_keyversion_number)
66 replace=2**FLAG_MOD_REPLACE
68 delete=2**FLAG_MOD_DELETE
72 # Will be modified during provision to tell if default sd has been modified
75 #Errors are always logged
77 __docformat__ = "restructuredText"
79 # Attributes that are never copied from the reference provision (even if they
80 # do not exist in the destination object).
81 # This is most probably because they are populated automatcally when object is
83 # This also apply to imported object from reference provision
84 hashAttrNotCopied = { "dn": 1, "whenCreated": 1, "whenChanged": 1,
85 "objectGUID": 1, "uSNCreated": 1,
86 "replPropertyMetaData": 1, "uSNChanged": 1,
87 "parentGUID": 1, "objectCategory": 1,
88 "distinguishedName": 1, "nTMixedDomain": 1,
89 "showInAdvancedViewOnly": 1, "instanceType": 1,
90 "msDS-Behavior-Version":1, "nextRid":1, "cn": 1,
91 "lmPwdHistory":1, "pwdLastSet": 1,
92 "ntPwdHistory":1, "unicodePwd":1,"dBCSPwd":1,
93 "supplementalCredentials":1, "gPCUserExtensionNames":1,
94 "gPCMachineExtensionNames":1,"maxPwdAge":1, "secret":1,
95 "possibleInferiors":1, "privilege":1,
98 # Usually for an object that already exists we do not overwrite attributes as
99 # they might have been changed for good reasons. Anyway for a few of them it's
100 # mandatory to replace them otherwise the provision will be broken somehow.
101 # But for attribute that are just missing we do not have to specify them as the default
102 # behavior is to add missing attribute
103 hashOverwrittenAtt = { "prefixMap": replace, "systemMayContain": replace,
104 "systemOnly":replace, "searchFlags":replace,
105 "mayContain":replace, "systemFlags":replace+add,
106 "description":replace, "operatingSystemVersion":replace,
107 "adminPropertyPages":replace, "groupType":replace,
108 "wellKnownObjects":replace, "privilege":never,
109 "defaultSecurityDescriptor": replace,
110 "rIDAvailablePool": never,
111 "rIDNextRID": add, "rIDUsedPool": never,
112 "defaultSecurityDescriptor": replace + add,
113 "isMemberOfPartialAttributeSet": delete,
114 "attributeDisplayNames": replace + add,
115 "versionNumber": add}
118 forwardlinked = set()
120 def define_what_to_log(opts):
124 if opts.debugchangesd:
125 what = what | CHANGESD
128 if opts.debugprovision:
129 what = what | PROVISION
131 what = what | CHANGEALL
135 parser = optparse.OptionParser("provision [options]")
136 sambaopts = options.SambaOptions(parser)
137 parser.add_option_group(sambaopts)
138 parser.add_option_group(options.VersionOptions(parser))
139 credopts = options.CredentialsOptions(parser)
140 parser.add_option_group(credopts)
141 parser.add_option("--setupdir", type="string", metavar="DIR",
142 help="directory with setup files")
143 parser.add_option("--debugprovision", help="Debug provision", action="store_true")
144 parser.add_option("--debugguess", action="store_true",
145 help="Print information on what is different but won't be changed")
146 parser.add_option("--debugchange", action="store_true",
147 help="Print information on what is different but won't be changed")
148 parser.add_option("--debugchangesd", action="store_true",
149 help="Print information security descriptors differences")
150 parser.add_option("--debugall", action="store_true",
151 help="Print all available information (very verbose)")
152 parser.add_option("--resetfileacl", action="store_true",
153 help="Force a reset on filesystem acls in sysvol / netlogon share")
154 parser.add_option("--full", action="store_true",
155 help="Perform full upgrade of the samdb (schema, configuration, new objects, ...")
157 opts = parser.parse_args()[0]
159 handler = logging.StreamHandler(sys.stdout)
160 upgrade_logger = logging.getLogger("upgradeprovision")
161 upgrade_logger.setLevel(logging.INFO)
163 upgrade_logger.addHandler(handler)
165 provision_logger = logging.getLogger("provision")
166 provision_logger.addHandler(handler)
168 whatToLog = define_what_to_log(opts)
170 def message(what, text):
171 """Print a message if this message type has been selected to be printed
173 :param what: Category of the message
174 :param text: Message to print """
175 if (whatToLog & what) or what <= 0:
176 upgrade_logger.info("%s", text)
178 if len(sys.argv) == 1:
179 opts.interactive = True
180 lp = sambaopts.get_loadparm()
181 smbconf = lp.configfile
183 creds = credopts.get_credentials(lp)
184 creds.set_kerberos_state(DONT_USE_KERBEROS)
185 setup_dir = opts.setupdir
186 if setup_dir is None:
187 setup_dir = find_setup_dir()
191 def check_for_DNS(refprivate, private):
192 """Check if the provision has already the requirement for dynamic dns
194 :param refprivate: The path to the private directory of the reference
196 :param private: The path to the private directory of the upgraded
199 spnfile = "%s/spn_update_list" % private
200 dnsfile = "%s/dns_update_list" % private
201 namedfile = lp.get("dnsupdate:path")
204 namedfile = "%s/named.conf.update" % private
206 if not os.path.exists(spnfile):
207 shutil.copy("%s/spn_update_list" % refprivate, "%s" % spnfile)
209 if not os.path.exists(dnsfile):
210 shutil.copy("%s/dns_update_list" % refprivate, "%s" % dnsfile)
212 destdir = "%s/new_dns" % private
213 dnsdir = "%s/dns" % private
215 if not os.path.exists(namedfile):
216 if not os.path.exists(destdir):
218 if not os.path.exists(dnsdir):
220 shutil.copy("%s/named.conf" % refprivate, "%s/named.conf" % destdir)
221 shutil.copy("%s/named.txt" % refprivate, "%s/named.txt" % destdir)
222 message(SIMPLE, "It seems that you provision didn't integrate new rules "
223 "for dynamic dns update of domain related entries")
224 message(SIMPLE, "A copy of the new bind configuration files and "
225 "template as been put in %s, you should read them and configure dynamic "
226 " dns update" % destdir)
229 def populate_links(samdb, schemadn):
230 """Populate an array with all the back linked attributes
232 This attributes that are modified automaticaly when
233 front attibutes are changed
235 :param samdb: A LDB object for sam.ldb file
236 :param schemadn: DN of the schema for the partition"""
237 linkedAttHash = get_linked_attributes(Dn(samdb, str(schemadn)), samdb)
238 backlinked.extend(linkedAttHash.values())
239 for t in linkedAttHash.keys():
243 def populate_dnsyntax(samdb, schemadn):
244 """Populate an array with all the attributes that have DN synthax
247 :param samdb: A LDB object for sam.ldb file
248 :param schemadn: DN of the schema for the partition"""
249 res = samdb.search(expression="(attributeSyntax=2.5.5.1)", base=Dn(samdb,
250 str(schemadn)), scope=SCOPE_SUBTREE,
251 attrs=["lDAPDisplayName"])
253 dn_syntax_att.append(elem["lDAPDisplayName"])
256 def sanitychecks(samdb, names):
257 """Make some checks before trying to update
259 :param samdb: An LDB object opened on sam.ldb
260 :param names: list of key provision parameters
261 :return: Status of check (1 for Ok, 0 for not Ok) """
262 res = samdb.search(expression="objectClass=ntdsdsa", base=str(names.configdn),
263 scope=SCOPE_SUBTREE, attrs=["dn"],
264 controls=["search_options:1:2"])
266 print "No DC found, your provision is most probably hardly broken !"
269 print "Found %d domain controllers, for the moment upgradeprovision" \
270 "is not able to handle upgrade on domain with more than one DC, please demote" \
271 " the other(s) DC(s) before upgrading" % len(res)
277 def print_provision_key_parameters(names):
278 """Do a a pretty print of provision parameters
280 :param names: list of key provision parameters """
281 message(GUESS, "rootdn :" + str(names.rootdn))
282 message(GUESS, "configdn :" + str(names.configdn))
283 message(GUESS, "schemadn :" + str(names.schemadn))
284 message(GUESS, "serverdn :" + str(names.serverdn))
285 message(GUESS, "netbiosname :" + names.netbiosname)
286 message(GUESS, "defaultsite :" + names.sitename)
287 message(GUESS, "dnsdomain :" + names.dnsdomain)
288 message(GUESS, "hostname :" + names.hostname)
289 message(GUESS, "domain :" + names.domain)
290 message(GUESS, "realm :" + names.realm)
291 message(GUESS, "invocationid:" + names.invocation)
292 message(GUESS, "policyguid :" + names.policyid)
293 message(GUESS, "policyguiddc:" + str(names.policyid_dc))
294 message(GUESS, "domainsid :" + str(names.domainsid))
295 message(GUESS, "domainguid :" + names.domainguid)
296 message(GUESS, "ntdsguid :" + names.ntdsguid)
297 message(GUESS, "domainlevel :" + str(names.domainlevel))
300 def handle_special_case(att, delta, new, old, usn, basedn, aldb):
301 """Define more complicate update rules for some attributes
303 :param att: The attribute to be updated
304 :param delta: A messageElement object that correspond to the difference
305 between the updated object and the reference one
306 :param new: The reference object
307 :param old: The Updated object
308 :param usn: The highest usn modified by a previous (upgrade)provision
309 :param basedn: The base DN of the provision
310 :param aldb: An ldb object used to build DN
311 :return: True to indicate that the attribute should be kept, False for
314 flag = delta.get(att).flags()
315 # We do most of the special case handle if we do not have the
316 # highest usn as otherwise the replPropertyMetaData will guide us more
319 if (att == "sPNMappings" and flag == FLAG_MOD_REPLACE and
320 ldb.Dn(aldb, "CN=Directory Service,CN=Windows NT,"
321 "CN=Services,CN=Configuration,%s" % basedn)
324 if (att == "userAccountControl" and flag == FLAG_MOD_REPLACE and
325 ldb.Dn(aldb, "CN=Administrator,CN=Users,%s" % basedn)
327 message(SIMPLE, "We suggest that you change the userAccountControl"
328 " for user Administrator from value %d to %d" %
329 (int(str(old[0][att])), int(str(new[0][att]))))
331 if (att == "minPwdAge" and flag == FLAG_MOD_REPLACE):
332 if (long(str(old[0][att])) == 0):
333 delta[att] = MessageElement(new[0][att], FLAG_MOD_REPLACE, att)
336 if (att == "member" and flag == FLAG_MOD_REPLACE):
340 for elem in old[0][att]:
341 hash[str(elem).lower()]=1
342 newval.append(str(elem))
344 for elem in new[0][att]:
345 if not hash.has_key(str(elem).lower()):
347 newval.append(str(elem))
349 delta[att] = MessageElement(newval, FLAG_MOD_REPLACE, att)
354 if (att in ("gPLink", "gPCFileSysPath") and
355 flag == FLAG_MOD_REPLACE and
356 str(new[0].dn).lower() == str(old[0].dn).lower()):
360 if att == "forceLogoff":
361 ref=0x8000000000000000
362 oldval=int(old[0][att][0])
363 newval=int(new[0][att][0])
364 ref == old and ref == abs(new)
367 if att in ("adminDisplayName", "adminDescription"):
370 if (str(old[0].dn) == "CN=Samba4-Local-Domain, %s" % (names.schemadn)
371 and att == "defaultObjectCategory" and flag == FLAG_MOD_REPLACE):
374 if (str(old[0].dn) == "CN=Title, %s" % (str(names.schemadn)) and
375 att == "rangeUpper" and flag == FLAG_MOD_REPLACE):
378 if (str(old[0].dn) == "%s" % (str(names.rootdn))
379 and att == "subRefs" and flag == FLAG_MOD_REPLACE):
382 if str(delta.dn).endswith("CN=DisplaySpecifiers, %s" % names.configdn):
385 # This is a bit of special animal as we might have added
386 # already SPN entries to the list that has to be modified
387 # So we go in detail to try to find out what has to be added ...
388 if (att == "servicePrincipalName" and flag == FLAG_MOD_REPLACE):
392 for elem in old[0][att]:
394 newval.append(str(elem))
396 for elem in new[0][att]:
397 if not hash.has_key(str(elem)):
399 newval.append(str(elem))
401 delta[att] = MessageElement(newval, FLAG_MOD_REPLACE, att)
408 def dump_denied_change(dn, att, flagtxt, current, reference):
409 """Print detailed information about why a changed is denied
411 :param dn: DN of the object which attribute is denied
412 :param att: Attribute that was supposed to be upgraded
413 :param flagtxt: Type of the update that should be performed
414 (add, change, remove, ...)
415 :param current: Value(s) of the current attribute
416 :param reference: Value(s) of the reference attribute"""
418 message(CHANGE, "dn= " + str(dn)+" " + att+" with flag " + flagtxt
419 +" is not allowed to be changed/removed, I discard this change")
420 if att == "objectSid" :
421 message(CHANGE, "old : %s" % ndr_unpack(security.dom_sid, current[0]))
422 message(CHANGE, "new : %s" % ndr_unpack(security.dom_sid, reference[0]))
423 elif att == "rIDPreviousAllocationPool" or att == "rIDAllocationPool":
424 message(CHANGE, "old : %s" % int64range2str(current[0]))
425 message(CHANGE, "new : %s" % int64range2str(reference[0]))
428 for e in range(0, len(current)):
429 message(CHANGE, "old %d : %s" % (i, str(current[e])))
431 if reference is not None:
433 for e in range(0, len(reference)):
434 message(CHANGE, "new %d : %s" % (i, str(reference[e])))
437 def handle_special_add(samdb, dn, names):
438 """Handle special operation (like remove) on some object needed during
441 This is mostly due to wrong creation of the object in previous provision.
442 :param samdb: An Ldb object representing the SAM database
443 :param dn: DN of the object to inspect
444 :param names: list of key provision parameters
448 objDn = Dn(samdb, "CN=IIS_IUSRS, CN=Builtin, %s" % names.rootdn)
450 #This entry was misplaced lets remove it if it exists
451 dntoremove = "CN=IIS_IUSRS, CN=Users, %s" % names.rootdn
454 "CN=Certificate Service DCOM Access, CN=Builtin, %s" % names.rootdn)
456 #This entry was misplaced lets remove it if it exists
457 dntoremove = "CN=Certificate Service DCOM Access,"\
458 "CN=Users, %s" % names.rootdn
460 objDn = Dn(samdb, "CN=Cryptographic Operators, CN=Builtin, %s" % names.rootdn)
462 #This entry was misplaced lets remove it if it exists
463 dntoremove = "CN=Cryptographic Operators, CN=Users, %s" % names.rootdn
465 objDn = Dn(samdb, "CN=Event Log Readers, CN=Builtin, %s" % names.rootdn)
467 #This entry was misplaced lets remove it if it exists
468 dntoremove = "CN=Event Log Readers, CN=Users, %s" % names.rootdn
470 objDn = Dn(samdb,"CN=System,CN=WellKnown Security Principals,"
471 "CN=Configuration,%s" % names.rootdn)
473 oldDn = Dn(samdb,"CN=Well-Known-Security-Id-System,"
474 "CN=WellKnown Security Principals,"
475 "CN=Configuration,%s" % names.rootdn)
477 res = samdb.search(expression="(dn=%s)" % oldDn,
478 base=str(names.rootdn),
479 scope=SCOPE_SUBTREE, attrs=["dn"],
480 controls=["search_options:1:2"])
482 res2 = samdb.search(expression="(dn=%s)" % dn,
483 base=str(names.rootdn),
484 scope=SCOPE_SUBTREE, attrs=["dn"],
485 controls=["search_options:1:2"])
487 if len(res) > 0 and len(res2) == 0:
488 message(CHANGE, "Existing object %s must be replaced by %s,"
489 "Renaming old object" % (str(oldDn), str(dn)))
490 samdb.rename(oldDn, objDn, ["relax:0"])
494 if dntoremove is not None:
495 res = samdb.search(expression="(cn=RID Set)",
496 base=str(names.rootdn),
497 scope=SCOPE_SUBTREE, attrs=["dn"],
498 controls=["search_options:1:2"])
502 res = samdb.search(expression="(dn=%s)" % dntoremove,
503 base=str(names.rootdn),
504 scope=SCOPE_SUBTREE, attrs=["dn"],
505 controls=["search_options:1:2"])
507 message(CHANGE, "Existing object %s must be replaced by %s,"
508 "removing old object" % (dntoremove, str(dn)))
509 samdb.delete(res[0]["dn"])
515 def check_dn_nottobecreated(hash, index, listdn):
516 """Check if one of the DN present in the list has a creation order
517 greater than the current.
519 Hash is indexed by dn to be created, with each key
520 is associated the creation order.
522 First dn to be created has the creation order 0, second has 1, ...
523 Index contain the current creation order
525 :param hash: Hash holding the different DN of the object to be
527 :param index: Current creation order
528 :param listdn: List of DNs on which the current DN depends on
529 :return: None if the current object do not depend on other
530 object or if all object have been created before."""
534 key = str(dn).lower()
535 if hash.has_key(key) and hash[key] > index:
541 def add_missing_object(ref_samdb, samdb, dn, names, basedn, hash, index):
542 """Add a new object if the dependencies are satisfied
544 The function add the object if the object on which it depends are already
547 :param ref_samdb: Ldb object representing the SAM db of the reference
549 :param samdb: Ldb object representing the SAM db of the upgraded
551 :param dn: DN of the object to be added
552 :param names: List of key provision parameters
553 :param basedn: DN of the partition to be updated
554 :param hash: Hash holding the different DN of the object to be
556 :param index: Current creation order
557 :return: True if the object was created False otherwise"""
559 ret = handle_special_add(samdb, dn, names)
568 reference = ref_samdb.search(expression="dn=%s" % (str(dn)), base=basedn,
569 scope=SCOPE_SUBTREE, controls=["search_options:1:2"])
571 delta = samdb.msg_diff(empty, reference[0])
575 if str(reference[0].get("cn")) == "RID Set":
576 for klass in reference[0].get("objectClass"):
577 if str(klass).lower() == "ridset":
580 if delta.get("objectSid"):
581 sid = str(ndr_unpack(security.dom_sid, str(reference[0]["objectSid"])))
582 m = re.match(r".*-(\d+)$", sid)
583 if m and int(m.group(1))>999:
584 delta.remove("objectSid")
585 for att in hashAttrNotCopied.keys():
587 for att in backlinked:
589 depend_on_yettobecreated = None
590 for att in dn_syntax_att:
591 depend_on_yet_tobecreated = check_dn_nottobecreated(hash, index,
593 if depend_on_yet_tobecreated is not None:
594 message(CHANGE, "Object %s depends on %s in attribute %s,"
595 "delaying the creation" % (dn,
596 depend_on_yet_tobecreated, att))
601 message(CHANGE,"Object %s will be added" % dn)
602 samdb.add(delta, ["relax:0"])
604 message(CHANGE,"Object %s was skipped" % dn)
608 def gen_dn_index_hash(listMissing):
609 """Generate a hash associating the DN to its creation order
611 :param listMissing: List of DN
612 :return: Hash with DN as keys and creation order as values"""
614 for i in range(0, len(listMissing)):
615 hash[str(listMissing[i]).lower()] = i
618 def add_deletedobj_containers(ref_samdb, samdb, names):
619 """Add the object containter: CN=Deleted Objects
621 This function create the container for each partition that need one and
622 then reference the object into the root of the partition
624 :param ref_samdb: Ldb object representing the SAM db of the reference
626 :param samdb: Ldb object representing the SAM db of the upgraded provision
627 :param names: List of key provision parameters"""
630 wkoPrefix = "B:32:18E2EA80684F11D2B9AA00C04F79F805"
631 partitions = [str(names.rootdn), str(names.configdn)]
632 for part in partitions:
633 ref_delObjCnt = ref_samdb.search(expression="(cn=Deleted Objects)",
634 base=part, scope=SCOPE_SUBTREE,
636 controls=["show_deleted:0"])
637 delObjCnt = samdb.search(expression="(cn=Deleted Objects)",
638 base=part, scope=SCOPE_SUBTREE,
640 controls=["show_deleted:0"])
641 if len(ref_delObjCnt) > len(delObjCnt):
642 reference = ref_samdb.search(expression="cn=Deleted Objects",
643 base=part, scope=SCOPE_SUBTREE,
644 controls=["show_deleted:0"])
646 delta = samdb.msg_diff(empty, reference[0])
648 delta.dn = Dn(samdb, str(reference[0]["dn"]))
649 for att in hashAttrNotCopied.keys():
654 res = samdb.search(expression="(objectClass=*)", base=part,
656 attrs=["dn", "wellKnownObjects"])
658 targetWKO = "%s:%s" % (wkoPrefix, str(reference[0]["dn"]))
662 wko = res[0]["wellKnownObjects"]
664 # The wellKnownObject that we want to add.
666 if str(o) == targetWKO:
668 listwko.append(str(o))
671 listwko.append(targetWKO)
674 delta.dn = Dn(samdb, str(res[0]["dn"]))
675 delta["wellKnownObjects"] = MessageElement(listwko,
680 def add_missing_entries(ref_samdb, samdb, names, basedn, list):
681 """Add the missing object whose DN is the list
683 The function add the object if the objects on which it depends are
686 :param ref_samdb: Ldb object representing the SAM db of the reference
688 :param samdb: Ldb object representing the SAM db of the upgraded
690 :param dn: DN of the object to be added
691 :param names: List of key provision parameters
692 :param basedn: DN of the partition to be updated
693 :param list: List of DN to be added in the upgraded provision"""
698 while(len(listDefered) != len(listMissing) and len(listDefered) > 0):
700 listMissing = listDefered
702 hashMissing = gen_dn_index_hash(listMissing)
703 for dn in listMissing:
704 ret = add_missing_object(ref_samdb, samdb, dn, names, basedn,
708 # DN can't be created because it depends on some
709 # other DN in the list
710 listDefered.append(dn)
712 if len(listDefered) != 0:
713 raise ProvisioningError("Unable to insert missing elements:"
714 "circular references")
716 def handle_links(samdb, att, basedn, dn, value, ref_value, delta):
717 """This function handle updates on links
719 :param samdb: An LDB object pointing to the updated provision
720 :param att: Attribute to update
721 :param basedn: The root DN of the provision
722 :param dn: The DN of the inspected object
723 :param value: The value of the attribute
724 :param ref_value: The value of this attribute in the reference provision
725 :param delta: The MessageElement object that will be applied for
726 transforming the current provision"""
728 res = samdb.search(expression="dn=%s" % dn, base=basedn,
729 controls=["search_options:1:2", "reveal:1"],
737 newlinklist.extend(value)
741 # for w2k domain level the reveal won't reveal anything ...
742 # it means that we can readd links that were removed on purpose ...
743 # Also this function in fact just accept add not removal
745 for e in res[0][att]:
746 if not hash.has_key(e):
747 # We put in the blacklist all the element that are in the "revealed"
748 # result and not in the "standard" result
749 # This element are links that were removed before and so that
750 # we don't wan't to readd
754 if not blacklist.has_key(e) and not hash.has_key(e):
755 newlinklist.append(str(e))
758 delta[att] = MessageElement(newlinklist, FLAG_MOD_REPLACE, att)
763 msg_elt_flag_strs = {
764 ldb.FLAG_MOD_ADD: "MOD_ADD",
765 ldb.FLAG_MOD_REPLACE: "MOD_REPLACE",
766 ldb.FLAG_MOD_DELETE: "MOD_DELETE" }
769 def update_present(ref_samdb, samdb, basedn, listPresent, usns, invocationid):
770 """ This function updates the object that are already present in the
773 :param ref_samdb: An LDB object pointing to the reference provision
774 :param samdb: An LDB object pointing to the updated provision
775 :param basedn: A string with the value of the base DN for the provision
777 :param listPresent: A list of object that is present in the provision
778 :param usns: A list of USN range modified by previous provision and
780 :param invocationid: The value of the invocationid for the current DC"""
783 # This hash is meant to speedup lookup of attribute name from an oid,
784 # it's for the replPropertyMetaData handling
786 res = samdb.search(expression="objectClass=attributeSchema", base=basedn,
787 controls=["search_options:1:2"], attrs=["attributeID",
791 strDisplay = str(e.get("lDAPDisplayName"))
792 hash_oid_name[str(e.get("attributeID"))] = strDisplay
794 msg = "Unable to insert missing elements: circular references"
795 raise ProvisioningError(msg)
798 controls = ["search_options:1:2", "sd_flags:1:2"]
799 for dn in listPresent:
800 reference = ref_samdb.search(expression="dn=%s" % (str(dn)), base=basedn,
803 current = samdb.search(expression="dn=%s" % (str(dn)), base=basedn,
804 scope=SCOPE_SUBTREE, controls=controls)
807 (str(current[0].dn) != str(reference[0].dn)) and
808 (str(current[0].dn).upper() == str(reference[0].dn).upper())
810 message(CHANGE, "Name are the same but case change,"\
811 "let's rename %s to %s" % (str(current[0].dn),
812 str(reference[0].dn)))
813 identic_rename(samdb, reference[0].dn)
814 current = samdb.search(expression="dn=%s" % (str(dn)), base=basedn,
816 controls=["search_options:1:2"])
818 delta = samdb.msg_diff(current[0], reference[0])
820 for att in hashAttrNotCopied.keys():
823 for att in backlinked:
828 if len(delta.items()) > 1 and usns is not None:
829 # Fetch the replPropertyMetaData
830 res = samdb.search(expression="dn=%s" % (str(dn)), base=basedn,
831 scope=SCOPE_SUBTREE, controls=controls,
832 attrs=["replPropertyMetaData"])
833 ctr = ndr_unpack(drsblobs.replPropertyMetaDataBlob,
834 str(res[0]["replPropertyMetaData"])).ctr
838 # We put in this hash only modification
839 # made on the current host
840 att = hash_oid_name[samdb.get_oid_from_attid(o.attid)]
841 if str(o.originating_invocation_id) == str(invocationid):
842 # Note we could just use 1 here
843 hash_attr_usn[att] = o.originating_usn
845 hash_attr_usn[att] = -1
852 # We have updated by provision usn information so let's exploit
853 # replMetadataProperties
854 if att in forwardlinked:
856 curval = current[0][att]
859 if reference[0].get():
860 refval = reference[0][att]
863 handle_links(samdb, att, basedn, current[0]["dn"],
864 curval, refval, delta)
866 if isFirst == 0 and len(delta.items())>1:
868 txt = "%s\n" % (str(dn))
870 # There is always a dn attribute after a msg_diff
872 if att == "rIDAvailablePool":
875 if att == "objectSid":
878 if att == "creationTime":
881 if att == "oEMInformation":
884 if att == "msDs-KeyVersionNumber":
885 # This is the kvno of the computer/user it's a very bad
889 if handle_special_case(att, delta, reference, current, usns, basedn, samdb):
890 # This attribute is "complicated" to handle and handling
891 # was done in handle_special_case
893 attrUSN = hash_attr_usn.get(att)
894 if att == "forceLogoff" and attrUSN is None:
901 # This attribute was last modified by another DC forget
903 message(CHANGE, "%sAttribute: %s has been"
904 "created/modified/deleted by another DC,"
905 " do nothing" % (txt, att ))
909 elif not usn_in_range(int(attrUSN), usns):
910 message(CHANGE, "%sAttribute: %s has been"
911 "created/modified/deleted not during a"
912 " provision or upgradeprovision: current"
913 " usn %d , do nothing" % (txt, att, attrUSN))
918 if att == "defaultSecurityDescriptor":
921 message(CHANGE, "%sAttribute: %s will be modified"
922 "/deleted it was last modified"
923 "during a provision, current usn:"
924 "%d" % (txt, att, attrUSN))
927 message(CHANGE, "%sAttribute: %s will be added because"
928 " it hasn't existed before " % (txt, att))
933 # Old school way of handling things for pre alpha12 upgrade
935 msgElt = delta.get(att)
937 if att == "nTSecurityDescriptor":
944 if not hashOverwrittenAtt.has_key(att):
945 if msgElt.flags() != FLAG_MOD_ADD:
946 if not handle_special_case(att, delta, reference, current,
947 usns, basedn, samdb):
948 if opts.debugchange or opts.debugall:
950 dump_denied_change(dn, att,
951 msg_elt_flag_strs[msgElt.flags()],
952 current[0][att], reference[0][att])
954 dump_denied_change(dn, att,
955 msg_elt_flag_strs[msgElt.flags()],
956 current[0][att], None)
960 if hashOverwrittenAtt.get(att)&2**msgElt.flags() :
962 elif hashOverwrittenAtt.get(att)==never:
967 if len(delta.items()) >1:
968 attributes=", ".join(delta.keys())
969 message(CHANGE, "%s is different from the reference one, changed"
970 " attributes: %s\n" % (dn, attributes))
975 def reload_full_schema(samdb, names):
976 """Load the updated schema with all the new and existing classes
979 :param samdb: An LDB object connected to the sam.ldb of the update
981 :param names: List of key provision parameters
984 current = samdb.search(expression="objectClass=*", base=str(names.schemadn),
990 schema_ldif += samdb.write_ldif(ent, ldb.CHANGETYPE_NONE)
992 prefixmap_data = open(setup_path("prefixMap.txt"), 'r').read()
993 prefixmap_data = b64encode(prefixmap_data)
995 # We don't actually add this ldif, just parse it
996 prefixmap_ldif = "dn: cn=schema\nprefixMap:: %s\n\n" % prefixmap_data
998 dsdb._dsdb_set_schema_from_ldif(samdb, prefixmap_ldif, schema_ldif)
1001 def update_partition(ref_samdb, samdb, basedn, names, schema, provisionUSNs, prereloadfunc):
1002 """Check differences between the reference provision and the upgraded one.
1004 It looks for all objects which base DN is name.
1006 This function will also add the missing object and update existing object
1007 to add or remove attributes that were missing.
1009 :param ref_sambdb: An LDB object conntected to the sam.ldb of the
1011 :param samdb: An LDB object connected to the sam.ldb of the update
1013 :param basedn: String value of the DN of the partition
1014 :param names: List of key provision parameters
1015 :param schema: A Schema object
1016 :param provisionUSNs: The USNs modified by provision/upgradeprovision
1018 :param prereloadfunc: A function that must be executed just before the reload
1029 # Connect to the reference provision and get all the attribute in the
1030 # partition referred by name
1031 reference = ref_samdb.search(expression="objectClass=*", base=basedn,
1032 scope=SCOPE_SUBTREE, attrs=["dn"],
1033 controls=["search_options:1:2"])
1035 current = samdb.search(expression="objectClass=*", base=basedn,
1036 scope=SCOPE_SUBTREE, attrs=["dn"],
1037 controls=["search_options:1:2"])
1038 # Create a hash for speeding the search of new object
1039 for i in range(0, len(reference)):
1040 hash_new[str(reference[i]["dn"]).lower()] = reference[i]["dn"]
1042 # Create a hash for speeding the search of existing object in the
1044 for i in range(0, len(current)):
1045 hash[str(current[i]["dn"]).lower()] = current[i]["dn"]
1048 for k in hash_new.keys():
1049 if not hash.has_key(k):
1050 if not str(hash_new[k]) == "CN=Deleted Objects, %s" % names.rootdn:
1051 listMissing.append(hash_new[k])
1053 listPresent.append(hash_new[k])
1055 # Sort the missing object in order to have object of the lowest level
1056 # first (which can be containers for higher level objects)
1057 listMissing.sort(dn_sort)
1058 listPresent.sort(dn_sort)
1060 # The following lines is to load the up to
1061 # date schema into our current LDB
1062 # a complete schema is needed as the insertion of attributes
1063 # and class is done against it
1064 # and the schema is self validated
1065 samdb.set_schema(schema)
1067 message(SIMPLE, "There are %d missing objects" % (len(listMissing)))
1068 add_deletedobj_containers(ref_samdb, samdb, names)
1070 add_missing_entries(ref_samdb, samdb, names, basedn, listMissing)
1073 message(SIMPLE, "Reloading a merged schema, it might trigger"\
1074 " reindexing so please be patient")
1075 reload_full_schema(samdb, names)
1076 message(SIMPLE, "Schema reloaded !")
1078 changed = update_present(ref_samdb, samdb, basedn, listPresent,
1079 provisionUSNs, names.invocation)
1080 message(SIMPLE, "There are %d changed objects" % (changed))
1083 except StandardError, err:
1084 message(ERROR, "Exception during upgrade of samdb:")
1085 (typ, val, tb) = sys.exc_info()
1086 traceback.print_exception(typ, val, tb)
1090 def check_updated_sd(ref_sam, cur_sam, names):
1091 """Check if the security descriptor in the upgraded provision are the same
1094 :param ref_sam: A LDB object connected to the sam.ldb file used as
1095 the reference provision
1096 :param cur_sam: A LDB object connected to the sam.ldb file used as
1098 :param names: List of key provision parameters"""
1099 reference = ref_sam.search(expression="objectClass=*", base=str(names.rootdn),
1100 scope=SCOPE_SUBTREE,
1101 attrs=["dn", "nTSecurityDescriptor"],
1102 controls=["search_options:1:2"])
1103 current = cur_sam.search(expression="objectClass=*", base=str(names.rootdn),
1104 scope=SCOPE_SUBTREE,
1105 attrs=["dn", "nTSecurityDescriptor"],
1106 controls=["search_options:1:2"])
1108 for i in range(0, len(reference)):
1109 refsd = ndr_unpack(security.descriptor,
1110 str(reference[i]["nTSecurityDescriptor"]))
1111 hash[str(reference[i]["dn"]).lower()] = refsd.as_sddl(names.domainsid)
1114 for i in range(0, len(current)):
1115 key = str(current[i]["dn"]).lower()
1116 if hash.has_key(key):
1117 cursd = ndr_unpack(security.descriptor,
1118 str(current[i]["nTSecurityDescriptor"]))
1119 sddl = cursd.as_sddl(names.domainsid)
1120 if sddl != hash[key]:
1121 txt = get_diff_sddls(hash[key], sddl)
1123 message(CHANGESD, "On object %s ACL is different"
1124 " \n%s" % (current[i]["dn"], txt))
1128 def fix_partition_sd(samdb, names):
1129 """This function fix the SD for partition containers (basedn, configdn, ...)
1130 This is needed because some provision use to have broken SD on containers
1132 :param samdb: An LDB object pointing to the sam of the current provision
1133 :param names: A list of key provision parameters
1135 # First update the SD for the rootdn
1136 res = samdb.search(expression="objectClass=*", base=str(names.rootdn),
1137 scope=SCOPE_BASE, attrs=["dn", "whenCreated"],
1138 controls=["search_options:1:2"])
1140 delta.dn = Dn(samdb, str(res[0]["dn"]))
1141 descr = get_domain_descriptor(names.domainsid)
1142 delta["nTSecurityDescriptor"] = MessageElement(descr, FLAG_MOD_REPLACE,
1143 "nTSecurityDescriptor")
1144 samdb.modify(delta, ["recalculate_sd:0"])
1145 # Then the config dn
1146 res = samdb.search(expression="objectClass=*", base=str(names.configdn),
1147 scope=SCOPE_BASE, attrs=["dn", "whenCreated"],
1148 controls=["search_options:1:2"])
1150 delta.dn = Dn(samdb, str(res[0]["dn"]))
1151 descr = get_config_descriptor(names.domainsid)
1152 delta["nTSecurityDescriptor"] = MessageElement(descr, FLAG_MOD_REPLACE,
1153 "nTSecurityDescriptor" )
1154 samdb.modify(delta, ["recalculate_sd:0"])
1155 # Then the schema dn
1156 res = samdb.search(expression="objectClass=*", base=str(names.schemadn),
1157 scope=SCOPE_BASE, attrs=["dn", "whenCreated"],
1158 controls=["search_options:1:2"])
1161 delta.dn = Dn(samdb, str(res[0]["dn"]))
1162 descr = get_schema_descriptor(names.domainsid)
1163 delta["nTSecurityDescriptor"] = MessageElement(descr, FLAG_MOD_REPLACE,
1164 "nTSecurityDescriptor" )
1165 samdb.modify(delta, ["recalculate_sd:0"])
1167 def rebuild_sd(samdb, names):
1168 """Rebuild security descriptor of the current provision from scratch
1170 During the different pre release of samba4 security descriptors (SD)
1171 were notarly broken (up to alpha11 included)
1172 This function allow to get them back in order, this function make the
1173 assumption that nobody has modified manualy an SD
1174 and so SD can be safely recalculated from scratch to get them right.
1176 :param names: List of key provision parameters"""
1180 res = samdb.search(expression="objectClass=*", base=str(names.rootdn),
1181 scope=SCOPE_SUBTREE, attrs=["dn", "whenCreated"],
1182 controls=["search_options:1:2"])
1184 if not (str(obj["dn"]) == str(names.rootdn) or
1185 str(obj["dn"]) == str(names.configdn) or
1186 str(obj["dn"]) == str(names.schemadn)):
1187 hash[str(obj["dn"])] = obj["whenCreated"]
1189 listkeys = hash.keys()
1190 listkeys.sort(dn_sort)
1192 for key in listkeys:
1195 delta.dn = Dn(samdb, key)
1196 delta["whenCreated"] = MessageElement(hash[key], FLAG_MOD_REPLACE,
1198 samdb.modify(delta, ["recalculate_sd:0"])
1200 # XXX: We should always catch an explicit exception.
1201 # What could go wrong here?
1202 samdb.transaction_cancel()
1203 res = samdb.search(expression="objectClass=*", base=str(names.rootdn),
1204 scope=SCOPE_SUBTREE,
1205 attrs=["dn", "nTSecurityDescriptor"],
1206 controls=["search_options:1:2"])
1207 badsd = ndr_unpack(security.descriptor,
1208 str(res[0]["nTSecurityDescriptor"]))
1209 print "bad stuff %s" % badsd.as_sddl(names.domainsid)
1212 def removeProvisionUSN(samdb):
1213 attrs = [samba.provision.LAST_PROVISION_USN_ATTRIBUTE, "dn"]
1214 entry = samdb.search(expression="dn=@PROVISION", base = "",
1215 scope=SCOPE_SUBTREE,
1216 controls=["search_options:1:2"],
1219 empty.dn = entry[0].dn
1220 delta = samdb.msg_diff(entry[0], empty)
1222 delta.dn = entry[0].dn
1225 def remove_stored_generated_attrs(paths, creds, session, lp):
1226 """Remove previously stored constructed attributes
1228 :param paths: List of paths for different provision objects
1229 from the upgraded provision
1230 :param creds: A credential object
1231 :param session: A session object
1232 :param lp: A line parser object
1233 :return: An associative array whose key are the different constructed
1234 attributes and the value the dn where this attributes were found.
1238 def simple_update_basesamdb(newpaths, paths, names):
1239 """Update the provision container db: sam.ldb
1240 This function is aimed at very old provision (before alpha9)
1242 :param newpaths: List of paths for different provision objects
1243 from the reference provision
1244 :param paths: List of paths for different provision objects
1245 from the upgraded provision
1246 :param names: List of key provision parameters"""
1248 message(SIMPLE, "Copy samdb")
1249 shutil.copy(newpaths.samdb, paths.samdb)
1251 message(SIMPLE, "Update partitions filename if needed")
1252 schemaldb = os.path.join(paths.private_dir, "schema.ldb")
1253 configldb = os.path.join(paths.private_dir, "configuration.ldb")
1254 usersldb = os.path.join(paths.private_dir, "users.ldb")
1255 samldbdir = os.path.join(paths.private_dir, "sam.ldb.d")
1257 if not os.path.isdir(samldbdir):
1259 os.chmod(samldbdir, 0700)
1260 if os.path.isfile(schemaldb):
1261 shutil.copy(schemaldb, os.path.join(samldbdir,
1262 "%s.ldb"%str(names.schemadn).upper()))
1263 os.remove(schemaldb)
1264 if os.path.isfile(usersldb):
1265 shutil.copy(usersldb, os.path.join(samldbdir,
1266 "%s.ldb"%str(names.rootdn).upper()))
1268 if os.path.isfile(configldb):
1269 shutil.copy(configldb, os.path.join(samldbdir,
1270 "%s.ldb"%str(names.configdn).upper()))
1271 os.remove(configldb)
1274 def update_privilege(ref_private_path, cur_private_path):
1275 """Update the privilege database
1277 :param ref_private_path: Path to the private directory of the reference
1279 :param cur_private_path: Path to the private directory of the current
1280 (and to be updated) provision."""
1281 message(SIMPLE, "Copy privilege")
1282 shutil.copy(os.path.join(ref_private_path, "privilege.ldb"),
1283 os.path.join(cur_private_path, "privilege.ldb"))
1286 def update_samdb(ref_samdb, samdb, names, highestUSN, schema, prereloadfunc):
1287 """Upgrade the SAM DB contents for all the provision partitions
1289 :param ref_sambdb: An LDB object conntected to the sam.ldb of the reference
1291 :param samdb: An LDB object connected to the sam.ldb of the update
1293 :param names: List of key provision parameters
1294 :param highestUSN: The highest USN modified by provision/upgradeprovision
1296 :param schema: A Schema object that represent the schema of the provision
1297 :param prereloadfunc: A function that must be executed just before the reload
1301 message(SIMPLE, "Starting update of samdb")
1302 ret = update_partition(ref_samdb, samdb, str(names.rootdn), names,
1303 schema, highestUSN, prereloadfunc)
1305 message(SIMPLE, "Update of samdb finished")
1308 message(SIMPLE, "Update failed")
1312 def copyxattrs(dir, refdir):
1313 """ Copy owner, groups, extended ACL and NT acls from
1314 a reference dir to a destination dir
1316 Both dir are supposed to hold the same files
1317 :param dir: Destination dir
1318 :param refdir: Reference directory"""
1321 for root, dirs, files in os.walk(dir, topdown=True):
1323 subdir=root[len(dir):]
1324 ref = os.path.join("%s%s" % (refdir, subdir), name)
1325 statsinfo = os.stat(ref)
1326 tgt = os.path.join(root, name)
1329 os.chown(tgt, statsinfo.st_uid, statsinfo.st_gid)
1330 # Get the xattr attributes if any
1332 attribute = samba.xattr_native.wrap_getxattr(ref,
1333 xattr.XATTR_NTACL_NAME)
1334 samba.xattr_native.wrap_setxattr(tgt,
1335 xattr.XATTR_NTACL_NAME,
1339 attribute = samba.xattr_native.wrap_getxattr(ref,
1340 "system.posix_acl_access")
1341 samba.xattr_native.wrap_setxattr(tgt,
1342 "system.posix_acl_access",
1347 subdir=root[len(dir):]
1348 ref = os.path.join("%s%s" % (refdir, subdir), name)
1349 statsinfo = os.stat(ref)
1350 tgt = os.path.join(root, name)
1352 os.chown(os.path.join(root, name), statsinfo.st_uid,
1355 attribute = samba.xattr_native.wrap_getxattr(ref,
1356 xattr.XATTR_NTACL_NAME)
1357 samba.xattr_native.wrap_setxattr(tgt,
1358 xattr.XATTR_NTACL_NAME,
1362 attribute = samba.xattr_native.wrap_getxattr(ref,
1363 "system.posix_acl_access")
1364 samba.xattr_native.wrap_setxattr(tgt,
1365 "system.posix_acl_access",
1372 def backup_provision(paths, dir):
1373 """This function backup the provision files so that a rollback
1376 :param paths: Paths to different objects
1377 :param dir: Directory where to store the backup
1380 shutil.copytree(paths.sysvol, os.path.join(dir, "sysvol"))
1381 copyxattrs(os.path.join(dir, "sysvol"), paths.sysvol)
1382 shutil.copy2(paths.samdb, dir)
1383 shutil.copy2(paths.secrets, dir)
1384 shutil.copy2(paths.idmapdb, dir)
1385 shutil.copy2(paths.privilege, dir)
1386 if os.path.isfile(os.path.join(paths.private_dir,"eadb.tdb")):
1387 shutil.copy2(os.path.join(paths.private_dir,"eadb.tdb"), dir)
1388 shutil.copy2(paths.smbconf, dir)
1389 shutil.copy2(os.path.join(paths.private_dir,"secrets.keytab"), dir)
1391 samldbdir = os.path.join(paths.private_dir, "sam.ldb.d")
1392 if not os.path.isdir(samldbdir):
1393 samldbdir = paths.private_dir
1394 schemaldb = os.path.join(paths.private_dir, "schema.ldb")
1395 configldb = os.path.join(paths.private_dir, "configuration.ldb")
1396 usersldb = os.path.join(paths.private_dir, "users.ldb")
1397 shutil.copy2(schemaldb, dir)
1398 shutil.copy2(usersldb, dir)
1399 shutil.copy2(configldb, dir)
1401 shutil.copytree(samldbdir, os.path.join(dir, "sam.ldb.d"))
1406 def sync_calculated_attributes(samdb, names):
1407 """Synchronize attributes used for constructed ones, with the
1408 old constructed that were stored in the database.
1410 This apply for instance to msds-keyversionnumber that was
1411 stored and that is now constructed from replpropertymetadata.
1413 :param samdb: An LDB object attached to the currently upgraded samdb
1414 :param names: Various key parameter about current provision.
1416 listAttrs = ["msDs-KeyVersionNumber"]
1417 hash = search_constructed_attrs_stored(samdb, names.rootdn, listAttrs)
1418 if hash.has_key("msDs-KeyVersionNumber"):
1419 increment_calculated_keyversion_number(samdb, names.rootdn,
1420 hash["msDs-KeyVersionNumber"])
1422 def setup_path(file):
1423 return os.path.join(setup_dir, file)
1425 # Synopsis for updateprovision
1426 # 1) get path related to provision to be update (called current)
1427 # 2) open current provision ldbs
1428 # 3) fetch the key provision parameter (domain sid, domain guid, invocationid
1430 # 4) research of lastProvisionUSN in order to get ranges of USN modified
1431 # by either upgradeprovision or provision
1432 # 5) creation of a new provision the latest version of provision script
1433 # (called reference)
1434 # 6) get reference provision paths
1435 # 7) open reference provision ldbs
1436 # 8) setup helpers data that will help the update process
1437 # 9) update the privilege ldb by copying the one of referecence provision to
1438 # the current provision
1439 # 10)get the oemInfo field, this field contains information about the different
1440 # provision that have been done
1441 # 11)Depending on whether oemInfo has the string "alpha9" or alphaxx (x as an
1442 # integer) or none of this the following things are done
1443 # A) When alpha9 or alphaxx is present
1444 # The base sam.ldb file is updated by looking at the difference between
1445 # referrence one and the current one. Everything is copied with the
1446 # exception of lastProvisionUSN attributes.
1447 # B) Other case (it reflect that that provision was done before alpha9)
1448 # The base sam.ldb of the reference provision is copied over
1449 # the current one, if necessary ldb related to partitions are moved
1451 # The highest used USN is fetched so that changed by upgradeprovision
1452 # usn can be tracked
1453 # 12)A Schema object is created, it will be used to provide a complete
1454 # schema to current provision during update (as the schema of the
1455 # current provision might not be complete and so won't allow some
1456 # object to be created)
1457 # 13)Proceed to full update of sam DB (see the separate paragraph about i)
1458 # 14)The secrets db is updated by pull all the difference from the reference
1459 # provision into the current provision
1460 # 15)As the previous step has most probably modified the password stored in
1461 # in secret for the current DC, a new password is generated,
1462 # the kvno is bumped and the entry in samdb is also updated
1463 # 16)For current provision older than alpha9, we must fix the SD a little bit
1464 # administrator to update them because SD used to be generated with the
1465 # system account before alpha9.
1466 # 17)The highest usn modified so far is searched in the database it will be
1467 # the upper limit for usn modified during provision.
1468 # This is done before potential SD recalculation because we do not want
1469 # SD modified during recalculation to be marked as modified during provision
1470 # (and so possibly remplaced at next upgradeprovision)
1471 # 18)Rebuilt SD if the flag indicate to do so
1472 # 19)Check difference between SD of reference provision and those of the
1473 # current provision. The check is done by getting the sddl representation
1474 # of the SD. Each sddl in chuncked into parts (user,group,dacl,sacl)
1475 # Each part is verified separetly, for dacl and sacl ACL is splited into
1476 # ACEs and each ACE is verified separately (so that a permutation in ACE
1477 # didn't raise as an error).
1478 # 20)The oemInfo field is updated to add information about the fact that the
1479 # provision has been updated by the upgradeprovision version xxx
1480 # (the version is the one obtained when starting samba with the --version
1482 # 21)Check if the current provision has all the settings needed for dynamic
1483 # DNS update to work (that is to say the provision is newer than
1484 # january 2010). If not dns configuration file from reference provision
1485 # are copied in a sub folder and the administrator is invited to
1486 # do what is needed.
1487 # 22)If the lastProvisionUSN attribute was present it is updated to add
1488 # the range of usns modified by the current upgradeprovision
1491 # About updating the sam DB
1492 # The update takes place in update_partition function
1493 # This function read both current and reference provision and list all
1494 # the available DN of objects
1495 # If the string representation of a DN in reference provision is
1496 # equal to the string representation of a DN in current provision
1497 # (without taking care of case) then the object is flaged as being
1498 # present. If the object is not present in current provision the object
1499 # is being flaged as missing in current provision. Object present in current
1500 # provision but not in reference provision are ignored.
1501 # Once the list of objects present and missing is done, the deleted object
1502 # containers are created in the differents partitions (if missing)
1504 # Then the function add_missing_entries is called
1505 # This function will go through the list of missing entries by calling
1506 # add_missing_object for the given object. If this function returns 0
1507 # it means that the object needs some other object in order to be created
1508 # The object is reappended at the end of the list to be created later
1509 # (and preferably after all the needed object have been created)
1510 # The function keeps on looping on the list of object to be created until
1511 # it's empty or that the number of defered creation is equal to the number
1512 # of object that still needs to be created.
1514 # The function add_missing_object will first check if the object can be created.
1515 # That is to say that it didn't depends other not yet created objects
1516 # If requisit can't be fullfilled it exists with 0
1517 # Then it will try to create the missing entry by creating doing
1518 # an ldb_message_diff between the object in the reference provision and
1520 # This resulting object is filtered to remove all the back link attribute
1521 # (ie. memberOf) as they will be created by the other linked object (ie.
1522 # the one with the member attribute)
1523 # All attributes specified in the hashAttrNotCopied associative array are
1524 # also removed it's most of the time generated attributes
1526 # After missing entries have been added the update_partition function will
1527 # take care of object that exist but that need some update.
1528 # In order to do so the function update_present is called with the list
1529 # of object that are present in both provision and that might need an update.
1531 # This function handle first case mismatch so that the DN in the current
1532 # provision have the same case as in reference provision
1534 # It will then construct an associative array consiting of attributes as
1535 # key and invocationid as value( if the originating invocation id is
1536 # different from the invocation id of the current DC the value is -1 instead).
1538 # If the range of provision modified attributes is present, the function will
1539 # use the replMetadataProperty update method which is the following:
1540 # Removing attributes that should not be updated: rIDAvailablePool, objectSid,
1541 # creationTime, msDs-KeyVersionNumber, oEMInformation
1542 # Check for each attribute if its usn is within one of the modified by
1543 # provision range and if its originating id is the invocation id of the
1544 # current DC, then validate the update from reference to current.
1545 # If not or if there is no replMetatdataProperty for this attribute then we
1547 # Otherwise (case the range of provision modified attribute is not present) it
1548 # use the following process:
1549 # All attributes that need to be added are accepted at the exeption of those
1550 # listed in hashOverwrittenAtt, in this case the attribute needs to have the
1551 # correct flags specified.
1552 # For attributes that need to be modified or removed, a check is performed
1553 # in OverwrittenAtt, if the attribute is present and the modification flag
1554 # (remove, delete) is one of those listed for this attribute then modification
1555 # is accepted. For complicated handling of attribute update, the control is passed
1556 # to handle_special_case
1560 if __name__ == '__main__':
1561 global defSDmodified
1562 defSDmodified = False
1563 # From here start the big steps of the program
1564 # 1) First get files paths
1565 paths = get_paths(param, smbconf=smbconf)
1566 paths.setup = setup_dir
1567 # Get ldbs with the system session, it is needed for searching
1568 # provision parameters
1569 session = system_session()
1571 # This variable will hold the last provision USN once if it exists.
1574 ldbs = get_ldbs(paths, creds, session, lp)
1575 backupdir = tempfile.mkdtemp(dir=paths.private_dir,
1576 prefix="backupprovision")
1577 backup_provision(paths, backupdir)
1579 ldbs.startTransactions()
1581 # 3) Guess all the needed names (variables in fact) from the current
1583 names = find_provision_key_parameters(ldbs.sam, ldbs.secrets, ldbs.idmap,
1586 lastProvisionUSNs = get_last_provision_usn(ldbs.sam)
1587 if lastProvisionUSNs is not None:
1589 "Find a last provision USN, %d range(s)" % len(lastProvisionUSNs))
1591 # Objects will be created with the admin session
1592 # (not anymore system session)
1593 adm_session = admin_session(lp, str(names.domainsid))
1594 # So we reget handle on objects
1595 # ldbs = get_ldbs(paths, creds, adm_session, lp)
1597 if not sanitychecks(ldbs.sam, names):
1598 message(SIMPLE, "Sanity checks for the upgrade fails, checks messages"
1599 " and correct them before rerunning upgradeprovision")
1602 # Let's see provision parameters
1603 print_provision_key_parameters(names)
1605 # 5) With all this information let's create a fresh new provision used as
1607 message(SIMPLE, "Creating a reference provision")
1608 provisiondir = tempfile.mkdtemp(dir=paths.private_dir,
1609 prefix="referenceprovision")
1610 newprovision(names, setup_dir, creds, session, smbconf, provisiondir,
1615 # We need to get a list of object which SD is directly computed from
1616 # defaultSecurityDescriptor.
1617 # This will allow us to know which object we can rebuild the SD in case
1618 # of change of the parent's SD or of the defaultSD.
1619 # Get file paths of this new provision
1620 newpaths = get_paths(param, targetdir=provisiondir)
1621 new_ldbs = get_ldbs(newpaths, creds, session, lp)
1622 new_ldbs.startTransactions()
1624 # 8) Populate some associative array to ease the update process
1625 # List of attribute which are link and backlink
1626 populate_links(new_ldbs.sam, names.schemadn)
1627 # List of attribute with ASN DN synthax)
1628 populate_dnsyntax(new_ldbs.sam, names.schemadn)
1630 update_privilege(newpaths.private_dir, paths.private_dir)
1632 oem = getOEMInfo(ldbs.sam, str(names.rootdn))
1633 # Do some modification on sam.ldb
1634 ldbs.groupedCommit()
1635 new_ldbs.groupedCommit()
1638 if re.match(".*alpha((9)|(\d\d+)).*", str(oem)):
1640 # Starting from alpha9 we can consider that the structure is quite ok
1641 # and that we should do only dela
1642 deltaattr = delta_update_basesamdb(newpaths.samdb,
1650 simple_update_basesamdb(newpaths, paths, names)
1651 ldbs = get_ldbs(paths, creds, session, lp)
1652 removeProvisionUSN(ldbs.sam)
1654 ldbs.startTransactions()
1655 minUSN = int(str(get_max_usn(ldbs.sam, str(names.rootdn)))) + 1
1656 new_ldbs.startTransactions()
1659 schema = Schema(setup_path, names.domainsid, schemadn=str(names.schemadn),
1660 serverdn=str(names.serverdn))
1661 # We create a closure that will be invoked just before schema reload
1662 def schemareloadclosure():
1663 basesam = Ldb(paths.samdb, session_info=session, credentials=creds, lp=lp,
1664 options=["modules:"])
1666 if deltaattr is not None and len(deltaattr) > 1:
1669 deltaattr.remove("dn")
1670 for att in deltaattr:
1671 if att.lower() == "dn":
1673 if deltaattr.get(att) is not None \
1674 and deltaattr.get(att).flags() != FLAG_MOD_ADD:
1676 elif deltaattr.get(att) is None:
1679 message(CHANGE, "Applying delta to @ATTRIBUTES")
1680 deltaattr.dn = ldb.Dn(basesam, "@ATTRIBUTES")
1681 basesam.modify(deltaattr)
1683 message(CHANGE, "Not applying delta to @ATTRIBUTES because "\
1684 "there is not only add")
1687 if not update_samdb(new_ldbs.sam, ldbs.sam, names, lastProvisionUSNs,
1688 schema, schemareloadclosure):
1689 message(SIMPLE, "Rollbacking every changes. Check the reason"
1691 message(SIMPLE, "In any case your system as it was before"
1693 ldbs.groupedRollback()
1694 new_ldbs.groupedRollback()
1695 shutil.rmtree(provisiondir)
1698 # Try to reapply the change also when we do not change the sam
1699 # as the delta_upgrade
1700 schemareloadclosure()
1701 sync_calculated_attributes(ldbs.sam, names)
1703 update_secrets(new_ldbs.secrets, ldbs.secrets, message)
1705 message(SIMPLE, "Update machine account")
1706 update_machine_account_password(ldbs.sam, ldbs.secrets, names)
1708 # 16) SD should be created with admin but as some previous acl were so wrong
1709 # that admin can't modify them we have first to recreate them with the good
1710 # form but with system account and then give the ownership to admin ...
1711 if not re.match(r'.*alpha(9|\d\d+)', str(oem)):
1712 message(SIMPLE, "Fixing old povision SD")
1713 fix_partition_sd(ldbs.sam, names)
1714 rebuild_sd(ldbs.sam, names)
1716 # We calculate the max USN before recalculating the SD because we might
1717 # touch object that have been modified after a provision and we do not
1718 # want that the next upgradeprovision thinks that it has a green light
1722 maxUSN = get_max_usn(ldbs.sam, str(names.rootdn))
1724 # 18) We rebuild SD only if defaultSecurityDescriptor is modified
1725 # But in fact we should do it also if one object has its SD modified as
1726 # child might need rebuild
1728 message(SIMPLE, "Updating SD")
1729 ldbs.sam.set_session_info(adm_session)
1730 # Alpha10 was a bit broken still
1731 if re.match(r'.*alpha(\d|10)', str(oem)):
1732 fix_partition_sd(ldbs.sam, names)
1733 rebuild_sd(ldbs.sam, names)
1736 # Now we are quite confident in the recalculate process of the SD, we make
1738 # Also the check must be done in a clever way as for the moment we just
1740 if opts.debugchangesd:
1741 check_updated_sd(new_ldbs.sam, ldbs.sam, names)
1744 updateOEMInfo(ldbs.sam, str(names.rootdn))
1746 check_for_DNS(newpaths.private_dir, paths.private_dir)
1748 if lastProvisionUSNs is not None:
1749 update_provision_usn(ldbs.sam, minUSN, maxUSN)
1750 if opts.full and (names.policyid is None or names.policyid_dc is None):
1751 update_policyids(names, ldbs.sam)
1752 if opts.full or opts.resetfileacl:
1754 update_gpo(paths, ldbs.sam, names, lp, message, 1)
1755 except ProvisioningError, e:
1756 message(ERROR, "The policy for domain controller is missing,"
1757 " you should restart upgradeprovision with --full")
1759 message(ERROR, "Setting ACL not supported on your filesystem")
1762 update_gpo(paths, ldbs.sam, names, lp, message, 0)
1763 except ProvisioningError, e:
1764 message(ERROR, "The policy for domain controller is missing,"
1765 " you should restart upgradeprovision with --full")
1766 ldbs.groupedCommit()
1767 new_ldbs.groupedCommit()
1768 message(SIMPLE, "Upgrade finished !")
1769 # remove reference provision now that everything is done !
1770 # So we have reindexed first if need when the merged schema was reloaded
1771 # (as new attributes could have quick in)
1772 # But the second part of the update (when we update existing objects
1773 # can also have an influence on indexing as some attribute might have their
1774 # searchflag modificated
1775 message(SIMPLE, "Reopenning samdb to trigger reindexing if needed after"\
1777 samdb = Ldb(paths.samdb, session_info=session, credentials=creds, lp=lp)
1778 message(SIMPLE, "Reindexing finished")
1780 shutil.rmtree(provisiondir)
1781 except StandardError, err:
1782 message(ERROR,"A problem has occured when trying to upgrade your provision,"
1783 " a full backup is located at %s" % backupdir)
1784 if opts.debugall or opts.debugchange:
1785 (typ, val, tb) = sys.exc_info()
1786 traceback.print_exception(typ, val, tb)