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
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,
63 increment_calculated_keyversion_number)
65 replace=2**FLAG_MOD_REPLACE
67 delete=2**FLAG_MOD_DELETE
71 # Will be modified during provision to tell if default sd has been modified
74 #Errors are always logged
76 __docformat__ = "restructuredText"
78 # Attributes that are never copied from the reference provision (even if they
79 # do not exist in the destination object).
80 # This is most probably because they are populated automatcally when object is
82 # This also apply to imported object from reference provision
83 hashAttrNotCopied = { "dn": 1, "whenCreated": 1, "whenChanged": 1,
84 "objectGUID": 1, "uSNCreated": 1,
85 "replPropertyMetaData": 1, "uSNChanged": 1,
86 "parentGUID": 1, "objectCategory": 1,
87 "distinguishedName": 1, "nTMixedDomain": 1,
88 "showInAdvancedViewOnly": 1, "instanceType": 1,
89 "msDS-Behavior-Version":1, "nextRid":1, "cn": 1,
90 "versionNumber":1, "lmPwdHistory":1, "pwdLastSet": 1,
91 "ntPwdHistory":1, "unicodePwd":1,"dBCSPwd":1,
92 "supplementalCredentials":1, "gPCUserExtensionNames":1,
93 "gPCMachineExtensionNames":1,"maxPwdAge":1, "secret":1,
94 "possibleInferiors":1, "privilege":1,
97 # Usually for an object that already exists we do not overwrite attributes as
98 # they might have been changed for good reasons. Anyway for a few of them it's
99 # mandatory to replace them otherwise the provision will be broken somehow.
100 # But for attribute that are just missing we do not have to specify them as the default
101 # behavior is to add missing attribute
102 hashOverwrittenAtt = { "prefixMap": replace, "systemMayContain": replace,
103 "systemOnly":replace, "searchFlags":replace,
104 "mayContain":replace, "systemFlags":replace+add,
105 "description":replace, "operatingSystemVersion":replace,
106 "adminPropertyPages":replace, "groupType":replace,
107 "wellKnownObjects":replace, "privilege":never,
108 "defaultSecurityDescriptor": replace,
109 "rIDAvailablePool": never,
110 "defaultSecurityDescriptor": replace + add,
111 "isMemberOfPartialAttributeSet": delete,
112 "attributeDisplayNames": replace + add}
116 forwardlinked = set()
118 def define_what_to_log(opts):
122 if opts.debugchangesd:
123 what = what | CHANGESD
126 if opts.debugprovision:
127 what = what | PROVISION
129 what = what | CHANGEALL
133 parser = optparse.OptionParser("provision [options]")
134 sambaopts = options.SambaOptions(parser)
135 parser.add_option_group(sambaopts)
136 parser.add_option_group(options.VersionOptions(parser))
137 credopts = options.CredentialsOptions(parser)
138 parser.add_option_group(credopts)
139 parser.add_option("--setupdir", type="string", metavar="DIR",
140 help="directory with setup files")
141 parser.add_option("--debugprovision", help="Debug provision", action="store_true")
142 parser.add_option("--debugguess", action="store_true",
143 help="Print information on what is different but won't be changed")
144 parser.add_option("--debugchange", action="store_true",
145 help="Print information on what is different but won't be changed")
146 parser.add_option("--debugchangesd", action="store_true",
147 help="Print information security descriptors differences")
148 parser.add_option("--debugall", action="store_true",
149 help="Print all available information (very verbose)")
150 parser.add_option("--resetfileacl", action="store_true",
151 help="Force a reset on filesystem acls in sysvol / netlogon share")
152 parser.add_option("--full", action="store_true",
153 help="Perform full upgrade of the samdb (schema, configuration, new objects, ...")
155 opts = parser.parse_args()[0]
157 handler = logging.StreamHandler(sys.stdout)
158 upgrade_logger = logging.getLogger("upgradeprovision")
159 upgrade_logger.setLevel(logging.INFO)
161 upgrade_logger.addHandler(handler)
163 provision_logger = logging.getLogger("provision")
164 provision_logger.addHandler(handler)
166 whatToLog = define_what_to_log(opts)
168 def message(what, text):
169 """Print a message if this message type has been selected to be printed
171 :param what: Category of the message
172 :param text: Message to print """
173 if (whatToLog & what) or what <= 0:
174 upgrade_logger.info("%s", text)
176 if len(sys.argv) == 1:
177 opts.interactive = True
178 lp = sambaopts.get_loadparm()
179 smbconf = lp.configfile
181 creds = credopts.get_credentials(lp)
182 creds.set_kerberos_state(DONT_USE_KERBEROS)
183 setup_dir = opts.setupdir
184 if setup_dir is None:
185 setup_dir = find_setup_dir()
189 def check_for_DNS(refprivate, private):
190 """Check if the provision has already the requirement for dynamic dns
192 :param refprivate: The path to the private directory of the reference
194 :param private: The path to the private directory of the upgraded
197 spnfile = "%s/spn_update_list" % private
198 namedfile = lp.get("dnsupdate:path")
201 namedfile = "%s/named.conf.update" % private
203 if not os.path.exists(spnfile):
204 shutil.copy("%s/spn_update_list" % refprivate, "%s" % spnfile)
206 destdir = "%s/new_dns" % private
207 dnsdir = "%s/dns" % private
209 if not os.path.exists(namedfile):
210 if not os.path.exists(destdir):
212 if not os.path.exists(dnsdir):
214 shutil.copy("%s/named.conf" % refprivate, "%s/named.conf" % destdir)
215 shutil.copy("%s/named.txt" % refprivate, "%s/named.txt" % destdir)
216 message(SIMPLE, "It seems that you provision didn't integrate new rules "
217 "for dynamic dns update of domain related entries")
218 message(SIMPLE, "A copy of the new bind configuration files and "
219 "template as been put in %s, you should read them and configure dynamic "
220 " dns update" % destdir)
223 def populate_links(samdb, schemadn):
224 """Populate an array with all the back linked attributes
226 This attributes that are modified automaticaly when
227 front attibutes are changed
229 :param samdb: A LDB object for sam.ldb file
230 :param schemadn: DN of the schema for the partition"""
231 linkedAttHash = get_linked_attributes(Dn(samdb, str(schemadn)), samdb)
232 backlinked.extend(linkedAttHash.values())
233 for t in linkedAttHash.keys():
237 def populate_dnsyntax(samdb, schemadn):
238 """Populate an array with all the attributes that have DN synthax
241 :param samdb: A LDB object for sam.ldb file
242 :param schemadn: DN of the schema for the partition"""
243 res = samdb.search(expression="(attributeSyntax=2.5.5.1)", base=Dn(samdb,
244 str(schemadn)), scope=SCOPE_SUBTREE,
245 attrs=["lDAPDisplayName"])
247 dn_syntax_att.append(elem["lDAPDisplayName"])
250 def sanitychecks(samdb, names):
251 """Make some checks before trying to update
253 :param samdb: An LDB object opened on sam.ldb
254 :param names: list of key provision parameters
255 :return: Status of check (1 for Ok, 0 for not Ok) """
256 res = samdb.search(expression="objectClass=ntdsdsa", base=str(names.configdn),
257 scope=SCOPE_SUBTREE, attrs=["dn"],
258 controls=["search_options:1:2"])
260 print "No DC found, your provision is most probably hardly broken !"
263 print "Found %d domain controllers, for the moment upgradeprovision" \
264 "is not able to handle upgrade on domain with more than one DC, please demote" \
265 " the other(s) DC(s) before upgrading" % len(res)
271 def print_provision_key_parameters(names):
272 """Do a a pretty print of provision parameters
274 :param names: list of key provision parameters """
275 message(GUESS, "rootdn :" + str(names.rootdn))
276 message(GUESS, "configdn :" + str(names.configdn))
277 message(GUESS, "schemadn :" + str(names.schemadn))
278 message(GUESS, "serverdn :" + str(names.serverdn))
279 message(GUESS, "netbiosname :" + names.netbiosname)
280 message(GUESS, "defaultsite :" + names.sitename)
281 message(GUESS, "dnsdomain :" + names.dnsdomain)
282 message(GUESS, "hostname :" + names.hostname)
283 message(GUESS, "domain :" + names.domain)
284 message(GUESS, "realm :" + names.realm)
285 message(GUESS, "invocationid:" + names.invocation)
286 message(GUESS, "policyguid :" + names.policyid)
287 message(GUESS, "policyguiddc:" + str(names.policyid_dc))
288 message(GUESS, "domainsid :" + str(names.domainsid))
289 message(GUESS, "domainguid :" + names.domainguid)
290 message(GUESS, "ntdsguid :" + names.ntdsguid)
291 message(GUESS, "domainlevel :" + str(names.domainlevel))
294 def handle_special_case(att, delta, new, old, usn, basedn, aldb):
295 """Define more complicate update rules for some attributes
297 :param att: The attribute to be updated
298 :param delta: A messageElement object that correspond to the difference
299 between the updated object and the reference one
300 :param new: The reference object
301 :param old: The Updated object
302 :param usn: The highest usn modified by a previous (upgrade)provision
303 :param basedn: The base DN of the provision
304 :param aldb: An ldb object used to build DN
305 :return: True to indicate that the attribute should be kept, False for
308 flag = delta.get(att).flags()
309 # We do most of the special case handle if we do not have the
310 # highest usn as otherwise the replPropertyMetaData will guide us more
313 if (att == "sPNMappings" and flag == FLAG_MOD_REPLACE and
314 ldb.Dn(aldb, "CN=Directory Service,CN=Windows NT,"
315 "CN=Services,CN=Configuration,%s" % basedn)
318 if (att == "userAccountControl" and flag == FLAG_MOD_REPLACE and
319 ldb.Dn(aldb, "CN=Administrator,CN=Users,%s" % basedn)
321 message(SIMPLE, "We suggest that you change the userAccountControl"
322 " for user Administrator from value %d to %d" %
323 (int(str(old[0][att])), int(str(new[0][att]))))
325 if (att == "minPwdAge" and flag == FLAG_MOD_REPLACE):
326 if (long(str(old[0][att])) == 0):
327 delta[att] = MessageElement(new[0][att], FLAG_MOD_REPLACE, att)
330 if (att == "member" and flag == FLAG_MOD_REPLACE):
334 for elem in old[0][att]:
335 hash[str(elem).lower()]=1
336 newval.append(str(elem))
338 for elem in new[0][att]:
339 if not hash.has_key(str(elem).lower()):
341 newval.append(str(elem))
343 delta[att] = MessageElement(newval, FLAG_MOD_REPLACE, att)
348 if (att in ("gPLink", "gPCFileSysPath") and
349 flag == FLAG_MOD_REPLACE and
350 str(new[0].dn).lower() == str(old[0].dn).lower()):
354 if att == "forceLogoff":
355 ref=0x8000000000000000
356 oldval=int(old[0][att][0])
357 newval=int(new[0][att][0])
358 ref == old and ref == abs(new)
361 if att in ("adminDisplayName", "adminDescription"):
364 if (str(old[0].dn) == "CN=Samba4-Local-Domain, %s" % (names.schemadn)
365 and att == "defaultObjectCategory" and flag == FLAG_MOD_REPLACE):
368 if (str(old[0].dn) == "CN=Title, %s" % (str(names.schemadn)) and
369 att == "rangeUpper" and flag == FLAG_MOD_REPLACE):
372 if (str(old[0].dn) == "%s" % (str(names.rootdn))
373 and att == "subRefs" and flag == FLAG_MOD_REPLACE):
376 if str(delta.dn).endswith("CN=DisplaySpecifiers, %s" % names.configdn):
379 # This is a bit of special animal as we might have added
380 # already SPN entries to the list that has to be modified
381 # So we go in detail to try to find out what has to be added ...
382 if (att == "servicePrincipalName" and flag == FLAG_MOD_REPLACE):
386 for elem in old[0][att]:
388 newval.append(str(elem))
390 for elem in new[0][att]:
391 if not hash.has_key(str(elem)):
393 newval.append(str(elem))
395 delta[att] = MessageElement(newval, FLAG_MOD_REPLACE, att)
402 def dump_denied_change(dn, att, flagtxt, current, reference):
403 """Print detailed information about why a changed is denied
405 :param dn: DN of the object which attribute is denied
406 :param att: Attribute that was supposed to be upgraded
407 :param flagtxt: Type of the update that should be performed
408 (add, change, remove, ...)
409 :param current: Value(s) of the current attribute
410 :param reference: Value(s) of the reference attribute"""
412 message(CHANGE, "dn= " + str(dn)+" " + att+" with flag " + flagtxt
413 +" is not allowed to be changed/removed, I discard this change")
414 if att != "objectSid" :
416 for e in range(0, len(current)):
417 message(CHANGE, "old %d : %s" % (i, str(current[e])))
419 if reference is not None:
421 for e in range(0, len(reference)):
422 message(CHANGE, "new %d : %s" % (i, str(reference[e])))
425 message(CHANGE, "old : %s" % ndr_unpack(security.dom_sid, current[0]))
426 message(CHANGE, "new : %s" % ndr_unpack(security.dom_sid, reference[0]))
429 def handle_special_add(samdb, dn, names):
430 """Handle special operation (like remove) on some object needed during
433 This is mostly due to wrong creation of the object in previous provision.
434 :param samdb: An Ldb object representing the SAM database
435 :param dn: DN of the object to inspect
436 :param names: list of key provision parameters
440 objDn = Dn(samdb, "CN=IIS_IUSRS, CN=Builtin, %s" % names.rootdn)
442 #This entry was misplaced lets remove it if it exists
443 dntoremove = "CN=IIS_IUSRS, CN=Users, %s" % names.rootdn
446 "CN=Certificate Service DCOM Access, CN=Builtin, %s" % names.rootdn)
448 #This entry was misplaced lets remove it if it exists
449 dntoremove = "CN=Certificate Service DCOM Access,"\
450 "CN=Users, %s" % names.rootdn
453 objDn = Dn(samdb, "CN=Cryptographic Operators, CN=Builtin, %s" % names.rootdn)
455 #This entry was misplaced lets remove it if it exists
456 dntoremove = "CN=Cryptographic Operators, CN=Users, %s" % names.rootdn
458 objDn = Dn(samdb, "CN=Event Log Readers, CN=Builtin, %s" % names.rootdn)
460 #This entry was misplaced lets remove it if it exists
461 dntoremove = "CN=Event Log Readers, CN=Users, %s" % names.rootdn
463 objDn = Dn(samdb,"CN=System,CN=WellKnown Security Principals,"
464 "CN=Configuration,%s" % names.rootdn)
466 oldDn = Dn(samdb,"CN=Well-Known-Security-Id-System,"
467 "CN=WellKnown Security Principals,"
468 "CN=Configuration,%s" % names.rootdn)
470 res = samdb.search(expression="(dn=%s)" % oldDn,
471 base=str(names.rootdn),
472 scope=SCOPE_SUBTREE, attrs=["dn"],
473 controls=["search_options:1:2"])
475 message(CHANGE, "Existing object %s must be replaced by %s,"
476 "Renaming old object" % (str(oldDn), str(dn)))
477 samdb.rename(oldDn, objDn)
481 if dntoremove is not None:
482 res = samdb.search(expression="(dn=%s)" % dntoremove,
483 base=str(names.rootdn),
484 scope=SCOPE_SUBTREE, attrs=["dn"],
485 controls=["search_options:1:2"])
487 message(CHANGE, "Existing object %s must be replaced by %s,"
488 "removing old object" % (dntoremove, str(dn)))
489 samdb.delete(res[0]["dn"])
493 def check_dn_nottobecreated(hash, index, listdn):
494 """Check if one of the DN present in the list has a creation order
495 greater than the current.
497 Hash is indexed by dn to be created, with each key
498 is associated the creation order.
500 First dn to be created has the creation order 0, second has 1, ...
501 Index contain the current creation order
503 :param hash: Hash holding the different DN of the object to be
505 :param index: Current creation order
506 :param listdn: List of DNs on which the current DN depends on
507 :return: None if the current object do not depend on other
508 object or if all object have been created before."""
512 key = str(dn).lower()
513 if hash.has_key(key) and hash[key] > index:
519 def add_missing_object(ref_samdb, samdb, dn, names, basedn, hash, index):
520 """Add a new object if the dependencies are satisfied
522 The function add the object if the object on which it depends are already
525 :param ref_samdb: Ldb object representing the SAM db of the reference
527 :param samdb: Ldb object representing the SAM db of the upgraded
529 :param dn: DN of the object to be added
530 :param names: List of key provision parameters
531 :param basedn: DN of the partition to be updated
532 :param hash: Hash holding the different DN of the object to be
534 :param index: Current creation order
535 :return: True if the object was created False otherwise"""
537 if handle_special_add(samdb, dn, names):
539 reference = ref_samdb.search(expression="dn=%s" % (str(dn)), base=basedn,
540 scope=SCOPE_SUBTREE, controls=["search_options:1:2"])
542 delta = samdb.msg_diff(empty, reference[0])
546 if str(reference[0].get("cn")) == "RID Set":
547 for klass in reference[0].get("objectClass"):
548 if str(klass).lower == "ridset":
551 if delta.get("objectSid"):
552 sid = str(ndr_unpack(security.dom_sid, str(reference[0]["objectSid"])))
553 m = re.match(r".*-(\d+)$", sid)
554 if m and int(m.group(1))>999:
555 delta.remove("objectSid")
556 for att in hashAttrNotCopied.keys():
558 for att in backlinked:
560 depend_on_yettobecreated = None
561 for att in dn_syntax_att:
562 depend_on_yet_tobecreated = check_dn_nottobecreated(hash, index,
564 if depend_on_yet_tobecreated is not None:
565 message(CHANGE, "Object %s depends on %s in attribute %s,"
566 "delaying the creation" % (dn,
567 depend_on_yet_tobecreated, att))
572 message(CHANGE,"Object %s will be added" % dn)
573 samdb.add(delta, ["relax:0"])
575 message(CHANGE,"Object %s was skipped" % dn)
579 def gen_dn_index_hash(listMissing):
580 """Generate a hash associating the DN to its creation order
582 :param listMissing: List of DN
583 :return: Hash with DN as keys and creation order as values"""
585 for i in range(0, len(listMissing)):
586 hash[str(listMissing[i]).lower()] = i
589 def add_deletedobj_containers(ref_samdb, samdb, names):
590 """Add the object containter: CN=Deleted Objects
592 This function create the container for each partition that need one and
593 then reference the object into the root of the partition
595 :param ref_samdb: Ldb object representing the SAM db of the reference
597 :param samdb: Ldb object representing the SAM db of the upgraded provision
598 :param names: List of key provision parameters"""
601 wkoPrefix = "B:32:18E2EA80684F11D2B9AA00C04F79F805"
602 partitions = [str(names.rootdn), str(names.configdn)]
603 for part in partitions:
604 ref_delObjCnt = ref_samdb.search(expression="(cn=Deleted Objects)",
605 base=part, scope=SCOPE_SUBTREE,
607 controls=["show_deleted:0"])
608 delObjCnt = samdb.search(expression="(cn=Deleted Objects)",
609 base=part, scope=SCOPE_SUBTREE,
611 controls=["show_deleted:0"])
612 if len(ref_delObjCnt) > len(delObjCnt):
613 reference = ref_samdb.search(expression="cn=Deleted Objects",
614 base=part, scope=SCOPE_SUBTREE,
615 controls=["show_deleted:0"])
617 delta = samdb.msg_diff(empty, reference[0])
619 delta.dn = Dn(samdb, str(reference[0]["dn"]))
620 for att in hashAttrNotCopied.keys():
625 res = samdb.search(expression="(objectClass=*)", base=part,
627 attrs=["dn", "wellKnownObjects"])
629 targetWKO = "%s:%s" % (wkoPrefix, str(reference[0]["dn"]))
633 wko = res[0]["wellKnownObjects"]
635 # The wellKnownObject that we want to add.
637 if str(o) == targetWKO:
639 listwko.append(str(o))
642 listwko.append(targetWKO)
645 delta.dn = Dn(samdb, str(res[0]["dn"]))
646 delta["wellKnownObjects"] = MessageElement(listwko,
651 def add_missing_entries(ref_samdb, samdb, names, basedn, list):
652 """Add the missing object whose DN is the list
654 The function add the object if the objects on which it depends are
657 :param ref_samdb: Ldb object representing the SAM db of the reference
659 :param samdb: Ldb object representing the SAM db of the upgraded
661 :param dn: DN of the object to be added
662 :param names: List of key provision parameters
663 :param basedn: DN of the partition to be updated
664 :param list: List of DN to be added in the upgraded provision"""
669 while(len(listDefered) != len(listMissing) and len(listDefered) > 0):
671 listMissing = listDefered
673 hashMissing = gen_dn_index_hash(listMissing)
674 for dn in listMissing:
675 ret = add_missing_object(ref_samdb, samdb, dn, names, basedn,
679 # DN can't be created because it depends on some
680 # other DN in the list
681 listDefered.append(dn)
682 if len(listDefered) != 0:
683 raise ProvisioningError("Unable to insert missing elements:" \
684 "circular references")
686 def handle_links(samdb, att, basedn, dn, value, ref_value, delta):
687 """This function handle updates on links
689 :param samdb: An LDB object pointing to the updated provision
690 :param att: Attribute to update
691 :param basedn: The root DN of the provision
692 :param dn: The DN of the inspected object
693 :param value: The value of the attribute
694 :param ref_value: The value of this attribute in the reference provision
695 :param delta: The MessageElement object that will be applied for
696 transforming the current provision"""
698 res = samdb.search(expression="dn=%s" % dn, base=basedn,
699 controls=["search_options:1:2", "reveal:1"],
707 newlinklist.extend(value)
711 # for w2k domain level the reveal won't reveal anything ...
712 # it means that we can readd links that were removed on purpose ...
713 # Also this function in fact just accept add not removal
715 for e in res[0][att]:
716 if not hash.has_key(e):
717 # We put in the blacklist all the element that are in the "revealed"
718 # result and not in the "standard" result
719 # This element are links that were removed before and so that
720 # we don't wan't to readd
724 if not blacklist.has_key(e) and not hash.has_key(e):
725 newlinklist.append(str(e))
728 delta[att] = MessageElement(newlinklist, FLAG_MOD_REPLACE, att)
733 msg_elt_flag_strs = {
734 ldb.FLAG_MOD_ADD: "MOD_ADD",
735 ldb.FLAG_MOD_REPLACE: "MOD_REPLACE",
736 ldb.FLAG_MOD_DELETE: "MOD_DELETE" }
739 def update_present(ref_samdb, samdb, basedn, listPresent, usns, invocationid):
740 """ This function updates the object that are already present in the
743 :param ref_samdb: An LDB object pointing to the reference provision
744 :param samdb: An LDB object pointing to the updated provision
745 :param basedn: A string with the value of the base DN for the provision
747 :param listPresent: A list of object that is present in the provision
748 :param usns: A list of USN range modified by previous provision and
750 :param invocationid: The value of the invocationid for the current DC"""
753 # This hash is meant to speedup lookup of attribute name from an oid,
754 # it's for the replPropertyMetaData handling
756 res = samdb.search(expression="objectClass=attributeSchema", base=basedn,
757 controls=["search_options:1:2"], attrs=["attributeID",
761 strDisplay = str(e.get("lDAPDisplayName"))
762 hash_oid_name[str(e.get("attributeID"))] = strDisplay
764 msg = "Unable to insert missing elements: circular references"
765 raise ProvisioningError(msg)
768 controls = ["search_options:1:2", "sd_flags:1:2"]
769 for dn in listPresent:
770 reference = ref_samdb.search(expression="dn=%s" % (str(dn)), base=basedn,
773 current = samdb.search(expression="dn=%s" % (str(dn)), base=basedn,
774 scope=SCOPE_SUBTREE, controls=controls)
777 (str(current[0].dn) != str(reference[0].dn)) and
778 (str(current[0].dn).upper() == str(reference[0].dn).upper())
780 message(CHANGE, "Name are the same but case change,"\
781 "let's rename %s to %s" % (str(current[0].dn),
782 str(reference[0].dn)))
783 identic_rename(samdb, reference[0].dn)
784 current = samdb.search(expression="dn=%s" % (str(dn)), base=basedn,
786 controls=["search_options:1:2"])
788 delta = samdb.msg_diff(current[0], reference[0])
790 for att in hashAttrNotCopied.keys():
793 for att in backlinked:
798 if len(delta.items()) > 1 and usns is not None:
799 # Fetch the replPropertyMetaData
800 res = samdb.search(expression="dn=%s" % (str(dn)), base=basedn,
801 scope=SCOPE_SUBTREE, controls=controls,
802 attrs=["replPropertyMetaData"])
803 ctr = ndr_unpack(drsblobs.replPropertyMetaDataBlob,
804 str(res[0]["replPropertyMetaData"])).ctr
808 # We put in this hash only modification
809 # made on the current host
810 att = hash_oid_name[samdb.get_oid_from_attid(o.attid)]
811 if str(o.originating_invocation_id) == str(invocationid):
812 # Note we could just use 1 here
813 hash_attr_usn[att] = o.originating_usn
815 hash_attr_usn[att] = -1
822 # We have updated by provision usn information so let's exploit
823 # replMetadataProperties
824 if att in forwardlinked:
825 handle_links(samdb, att, basedn, current[0]["dn"],
826 current[0][att], reference[0][att], delta)
828 if isFirst == 0 and len(delta.items())>1:
830 txt = "%s\n" % (str(dn))
832 # There is always a dn attribute after a msg_diff
834 if att == "rIDAvailablePool":
837 if att == "objectSid":
840 if att == "creationTime":
843 if att == "oEMInformation":
846 if att == "msDs-KeyVersionNumber":
847 # This is the kvno of the computer/user it's a very bad
851 if handle_special_case(att, delta, reference, current, usns, basedn, samdb):
852 # This attribute is "complicated" to handle and handling
853 # was done in handle_special_case
855 attrUSN = hash_attr_usn.get(att)
856 if att == "forceLogoff" and attrUSN is None:
863 # This attribute was last modified by another DC forget
865 message(CHANGE, "%sAttribute: %s has been"
866 "created/modified/deleted by another DC,"
867 " do nothing" % (txt, att ))
871 elif not usn_in_range(int(attrUSN), usns):
872 message(CHANGE, "%sAttribute: %s has been"
873 "created/modified/deleted not during a"
874 " provision or upgradeprovision: current"
875 " usn %d , do nothing" % (txt, att, attrUSN))
880 if att == "defaultSecurityDescriptor":
883 message(CHANGE, "%sAttribute: %s will be modified"
884 "/deleted it was last modified"
885 "during a provision, current usn:"
886 "%d" % (txt, att, attrUSN))
889 message(CHANGE, "%sAttribute: %s will be added because"
890 " it hasn't existed before " % (txt, att))
895 # Old school way of handling things for pre alpha12 upgrade
897 msgElt = delta.get(att)
899 if att == "nTSecurityDescriptor":
906 if not hashOverwrittenAtt.has_key(att):
907 if msgElt.flags() != FLAG_MOD_ADD:
908 if not handle_special_case(att, delta, reference, current,
909 usns, basedn, samdb):
910 if opts.debugchange or opts.debugall:
912 dump_denied_change(dn, att,
913 msg_elt_flag_strs[msgElt.flags()],
914 current[0][att], reference[0][att])
916 dump_denied_change(dn, att,
917 msg_elt_flag_strs[msgElt.flags()],
918 current[0][att], None)
922 if hashOverwrittenAtt.get(att)&2**msgElt.flags() :
924 elif hashOverwrittenAtt.get(att)==never:
929 if len(delta.items()) >1:
930 attributes=", ".join(delta.keys())
931 message(CHANGE, "%s is different from the reference one, changed"
932 " attributes: %s\n" % (dn, attributes))
937 def reload_full_schema(samdb, names):
938 """Load the updated schema with all the new and existing classes
941 :param samdb: An LDB object connected to the sam.ldb of the update
943 :param names: List of key provision parameters
946 current = samdb.search(expression="objectClass=*", base=str(names.schemadn),
952 schema_ldif = "%s%s" % (schema_ldif,
953 samdb.write_ldif(ent, ldb.CHANGETYPE_NONE))
955 prefixmap_data = open(setup_path("prefixMap.txt"), 'r').read()
956 prefixmap_data = b64encode(prefixmap_data)
958 # We don't actually add this ldif, just parse it
959 prefixmap_ldif = "dn: cn=schema\nprefixMap:: %s\n\n" % prefixmap_data
961 dsdb._dsdb_set_schema_from_ldif(samdb, prefixmap_ldif, schema_ldif)
964 def update_partition(ref_samdb, samdb, basedn, names, schema, provisionUSNs):
965 """Check differences between the reference provision and the upgraded one.
967 It looks for all objects which base DN is name.
969 This function will also add the missing object and update existing object
970 to add or remove attributes that were missing.
972 :param ref_sambdb: An LDB object conntected to the sam.ldb of the
974 :param samdb: An LDB object connected to the sam.ldb of the update
976 :param basedn: String value of the DN of the partition
977 :param names: List of key provision parameters
978 :param schema: A Schema object
979 :param provisionUSNs: The USNs modified by provision/upgradeprovision
989 # Connect to the reference provision and get all the attribute in the
990 # partition referred by name
991 reference = ref_samdb.search(expression="objectClass=*", base=basedn,
992 scope=SCOPE_SUBTREE, attrs=["dn"],
993 controls=["search_options:1:2"])
995 current = samdb.search(expression="objectClass=*", base=basedn,
996 scope=SCOPE_SUBTREE, attrs=["dn"],
997 controls=["search_options:1:2"])
998 # Create a hash for speeding the search of new object
999 for i in range(0, len(reference)):
1000 hash_new[str(reference[i]["dn"]).lower()] = reference[i]["dn"]
1002 # Create a hash for speeding the search of existing object in the
1004 for i in range(0, len(current)):
1005 hash[str(current[i]["dn"]).lower()] = current[i]["dn"]
1008 for k in hash_new.keys():
1009 if not hash.has_key(k):
1010 if not str(hash_new[k]) == "CN=Deleted Objects, %s" % names.rootdn:
1011 listMissing.append(hash_new[k])
1013 listPresent.append(hash_new[k])
1015 # Sort the missing object in order to have object of the lowest level
1016 # first (which can be containers for higher level objects)
1017 listMissing.sort(dn_sort)
1018 listPresent.sort(dn_sort)
1020 # The following lines is to load the up to
1021 # date schema into our current LDB
1022 # a complete schema is needed as the insertion of attributes
1023 # and class is done against it
1024 # and the schema is self validated
1025 samdb.set_schema(schema)
1027 message(SIMPLE, "There are %d missing objects" % (len(listMissing)))
1028 add_deletedobj_containers(ref_samdb, samdb, names)
1030 add_missing_entries(ref_samdb, samdb, names, basedn, listMissing)
1032 reload_full_schema(samdb, names)
1034 changed = update_present(ref_samdb, samdb, basedn, listPresent,
1035 provisionUSNs, names.invocation)
1036 message(SIMPLE, "There are %d changed objects" % (changed))
1039 except StandardError, err:
1040 message(ERROR, "Exception during upgrade of samdb:")
1041 (typ, val, tb) = sys.exc_info()
1042 traceback.print_exception(typ, val, tb)
1046 def check_updated_sd(ref_sam, cur_sam, names):
1047 """Check if the security descriptor in the upgraded provision are the same
1050 :param ref_sam: A LDB object connected to the sam.ldb file used as
1051 the reference provision
1052 :param cur_sam: A LDB object connected to the sam.ldb file used as
1054 :param names: List of key provision parameters"""
1055 reference = ref_sam.search(expression="objectClass=*", base=str(names.rootdn),
1056 scope=SCOPE_SUBTREE,
1057 attrs=["dn", "nTSecurityDescriptor"],
1058 controls=["search_options:1:2"])
1059 current = cur_sam.search(expression="objectClass=*", base=str(names.rootdn),
1060 scope=SCOPE_SUBTREE,
1061 attrs=["dn", "nTSecurityDescriptor"],
1062 controls=["search_options:1:2"])
1064 for i in range(0, len(reference)):
1065 refsd = ndr_unpack(security.descriptor,
1066 str(reference[i]["nTSecurityDescriptor"]))
1067 hash[str(reference[i]["dn"]).lower()] = refsd.as_sddl(names.domainsid)
1070 for i in range(0, len(current)):
1071 key = str(current[i]["dn"]).lower()
1072 if hash.has_key(key):
1073 cursd = ndr_unpack(security.descriptor,
1074 str(current[i]["nTSecurityDescriptor"]))
1075 sddl = cursd.as_sddl(names.domainsid)
1076 if sddl != hash[key]:
1077 txt = get_diff_sddls(hash[key], sddl)
1079 message(CHANGESD, "On object %s ACL is different"
1080 " \n%s" % (current[i]["dn"], txt))
1084 def fix_partition_sd(samdb, names):
1085 """This function fix the SD for partition containers (basedn, configdn, ...)
1086 This is needed because some provision use to have broken SD on containers
1088 :param samdb: An LDB object pointing to the sam of the current provision
1089 :param names: A list of key provision parameters
1091 # First update the SD for the rootdn
1092 res = samdb.search(expression="objectClass=*", base=str(names.rootdn),
1093 scope=SCOPE_BASE, attrs=["dn", "whenCreated"],
1094 controls=["search_options:1:2"])
1096 delta.dn = Dn(samdb, str(res[0]["dn"]))
1097 descr = get_domain_descriptor(names.domainsid)
1098 delta["nTSecurityDescriptor"] = MessageElement(descr, FLAG_MOD_REPLACE,
1099 "nTSecurityDescriptor")
1100 samdb.modify(delta, ["recalculate_sd:0"])
1101 # Then the config dn
1102 res = samdb.search(expression="objectClass=*", base=str(names.configdn),
1103 scope=SCOPE_BASE, attrs=["dn", "whenCreated"],
1104 controls=["search_options:1:2"])
1106 delta.dn = Dn(samdb, str(res[0]["dn"]))
1107 descr = get_config_descriptor(names.domainsid)
1108 delta["nTSecurityDescriptor"] = MessageElement(descr, FLAG_MOD_REPLACE,
1109 "nTSecurityDescriptor" )
1110 samdb.modify(delta, ["recalculate_sd:0"])
1111 # Then the schema dn
1112 res = samdb.search(expression="objectClass=*", base=str(names.schemadn),
1113 scope=SCOPE_BASE, attrs=["dn", "whenCreated"],
1114 controls=["search_options:1:2"])
1117 delta.dn = Dn(samdb, str(res[0]["dn"]))
1118 descr = get_schema_descriptor(names.domainsid)
1119 delta["nTSecurityDescriptor"] = MessageElement(descr, FLAG_MOD_REPLACE,
1120 "nTSecurityDescriptor" )
1121 samdb.modify(delta, ["recalculate_sd:0"])
1123 def rebuild_sd(samdb, names):
1124 """Rebuild security descriptor of the current provision from scratch
1126 During the different pre release of samba4 security descriptors (SD)
1127 were notarly broken (up to alpha11 included)
1128 This function allow to get them back in order, this function make the
1129 assumption that nobody has modified manualy an SD
1130 and so SD can be safely recalculated from scratch to get them right.
1132 :param names: List of key provision parameters"""
1136 res = samdb.search(expression="objectClass=*", base=str(names.rootdn),
1137 scope=SCOPE_SUBTREE, attrs=["dn", "whenCreated"],
1138 controls=["search_options:1:2"])
1140 if not (str(obj["dn"]) == str(names.rootdn) or
1141 str(obj["dn"]) == str(names.configdn) or
1142 str(obj["dn"]) == str(names.schemadn)):
1143 hash[str(obj["dn"])] = obj["whenCreated"]
1145 listkeys = hash.keys()
1146 listkeys.sort(dn_sort)
1148 for key in listkeys:
1151 delta.dn = Dn(samdb, key)
1152 delta["whenCreated"] = MessageElement(hash[key], FLAG_MOD_REPLACE,
1154 samdb.modify(delta, ["recalculate_sd:0"])
1156 # XXX: We should always catch an explicit exception.
1157 # What could go wrong here?
1158 samdb.transaction_cancel()
1159 res = samdb.search(expression="objectClass=*", base=str(names.rootdn),
1160 scope=SCOPE_SUBTREE,
1161 attrs=["dn", "nTSecurityDescriptor"],
1162 controls=["search_options:1:2"])
1163 badsd = ndr_unpack(security.descriptor,
1164 str(res[0]["nTSecurityDescriptor"]))
1165 print "bad stuff %s" % badsd.as_sddl(names.domainsid)
1168 def removeProvisionUSN(samdb):
1169 attrs = [samba.provision.LAST_PROVISION_USN_ATTRIBUTE, "dn"]
1170 entry = samdb.search(expression="dn=@PROVISION", base = "",
1171 scope=SCOPE_SUBTREE,
1172 controls=["search_options:1:2"],
1175 empty.dn = entry[0].dn
1176 delta = samdb.msg_diff(entry[0], empty)
1178 delta.dn = entry[0].dn
1181 def remove_stored_generated_attrs(paths, creds, session, lp):
1182 """Remove previously stored constructed attributes
1184 :param paths: List of paths for different provision objects
1185 from the upgraded provision
1186 :param creds: A credential object
1187 :param session: A session object
1188 :param lp: A line parser object
1189 :return: An associative array whose key are the different constructed
1190 attributes and the value the dn where this attributes were found.
1194 def simple_update_basesamdb(newpaths, paths, names):
1195 """Update the provision container db: sam.ldb
1196 This function is aimed at very old provision (before alpha9)
1198 :param newpaths: List of paths for different provision objects
1199 from the reference provision
1200 :param paths: List of paths for different provision objects
1201 from the upgraded provision
1202 :param names: List of key provision parameters"""
1204 message(SIMPLE, "Copy samdb")
1205 shutil.copy(newpaths.samdb, paths.samdb)
1207 message(SIMPLE, "Update partitions filename if needed")
1208 schemaldb = os.path.join(paths.private_dir, "schema.ldb")
1209 configldb = os.path.join(paths.private_dir, "configuration.ldb")
1210 usersldb = os.path.join(paths.private_dir, "users.ldb")
1211 samldbdir = os.path.join(paths.private_dir, "sam.ldb.d")
1213 if not os.path.isdir(samldbdir):
1215 os.chmod(samldbdir, 0700)
1216 if os.path.isfile(schemaldb):
1217 shutil.copy(schemaldb, os.path.join(samldbdir,
1218 "%s.ldb"%str(names.schemadn).upper()))
1219 os.remove(schemaldb)
1220 if os.path.isfile(usersldb):
1221 shutil.copy(usersldb, os.path.join(samldbdir,
1222 "%s.ldb"%str(names.rootdn).upper()))
1224 if os.path.isfile(configldb):
1225 shutil.copy(configldb, os.path.join(samldbdir,
1226 "%s.ldb"%str(names.configdn).upper()))
1227 os.remove(configldb)
1230 def update_privilege(ref_private_path, cur_private_path):
1231 """Update the privilege database
1233 :param ref_private_path: Path to the private directory of the reference
1235 :param cur_private_path: Path to the private directory of the current
1236 (and to be updated) provision."""
1237 message(SIMPLE, "Copy privilege")
1238 shutil.copy(os.path.join(ref_private_path, "privilege.ldb"),
1239 os.path.join(cur_private_path, "privilege.ldb"))
1242 def update_samdb(ref_samdb, samdb, names, highestUSN, schema):
1243 """Upgrade the SAM DB contents for all the provision partitions
1245 :param ref_sambdb: An LDB object conntected to the sam.ldb of the reference
1247 :param samdb: An LDB object connected to the sam.ldb of the update
1249 :param names: List of key provision parameters
1250 :param highestUSN: The highest USN modified by provision/upgradeprovision
1252 :param schema: A Schema object that represent the schema of the provision"""
1254 message(SIMPLE, "Starting update of samdb")
1255 ret = update_partition(ref_samdb, samdb, str(names.rootdn), names,
1258 message(SIMPLE, "Update of samdb finished")
1261 message(SIMPLE, "Update failed")
1265 def copyxattrs(dir, refdir):
1266 """ Copy owner, groups, extended ACL and NT acls from
1267 a reference dir to a destination dir
1269 Both dir are supposed to hold the same files
1270 :param dir: Destination dir
1271 :param refdir: Reference directory"""
1274 for root, dirs, files in os.walk(dir, topdown=True):
1276 subdir=root[len(dir):]
1277 ref = os.path.join("%s%s" % (refdir, subdir), name)
1278 statsinfo = os.stat(ref)
1279 tgt = os.path.join(root, name)
1282 os.chown(tgt, statsinfo.st_uid, statsinfo.st_gid)
1283 # Get the xattr attributes if any
1285 attribute = samba.xattr_native.wrap_getxattr(ref,
1286 xattr.XATTR_NTACL_NAME)
1287 samba.xattr_native.wrap_setxattr(tgt,
1288 xattr.XATTR_NTACL_NAME,
1292 attribute = samba.xattr_native.wrap_getxattr(ref,
1293 "system.posix_acl_access")
1294 samba.xattr_native.wrap_setxattr(tgt,
1295 "system.posix_acl_access",
1300 subdir=root[len(dir):]
1301 ref = os.path.join("%s%s" % (refdir, subdir), name)
1302 statsinfo = os.stat(ref)
1303 tgt = os.path.join(root, name)
1305 os.chown(os.path.join(root, name), statsinfo.st_uid,
1308 attribute = samba.xattr_native.wrap_getxattr(ref,
1309 xattr.XATTR_NTACL_NAME)
1310 samba.xattr_native.wrap_setxattr(tgt,
1311 xattr.XATTR_NTACL_NAME,
1315 attribute = samba.xattr_native.wrap_getxattr(ref,
1316 "system.posix_acl_access")
1317 samba.xattr_native.wrap_setxattr(tgt,
1318 "system.posix_acl_access",
1325 def backup_provision(paths, dir):
1326 """This function backup the provision files so that a rollback
1329 :param paths: Paths to different objects
1330 :param dir: Directory where to store the backup
1333 shutil.copytree(paths.sysvol, os.path.join(dir, "sysvol"))
1334 copyxattrs(os.path.join(dir, "sysvol"), paths.sysvol)
1335 shutil.copy2(paths.samdb, dir)
1336 shutil.copy2(paths.secrets, dir)
1337 shutil.copy2(paths.idmapdb, dir)
1338 shutil.copy2(paths.privilege, dir)
1339 if os.path.isfile(os.path.join(paths.private_dir,"eadb.tdb")):
1340 shutil.copy2(os.path.join(paths.private_dir,"eadb.tdb"), dir)
1341 shutil.copy2(paths.smbconf, dir)
1342 shutil.copy2(os.path.join(paths.private_dir,"secrets.keytab"), dir)
1344 samldbdir = os.path.join(paths.private_dir, "sam.ldb.d")
1345 if not os.path.isdir(samldbdir):
1346 samldbdir = paths.private_dir
1347 schemaldb = os.path.join(paths.private_dir, "schema.ldb")
1348 configldb = os.path.join(paths.private_dir, "configuration.ldb")
1349 usersldb = os.path.join(paths.private_dir, "users.ldb")
1350 shutil.copy2(schemaldb, dir)
1351 shutil.copy2(usersldb, dir)
1352 shutil.copy2(configldb, dir)
1354 shutil.copytree(samldbdir, os.path.join(dir, "sam.ldb.d"))
1359 def sync_calculated_attributes(samdb, names):
1360 """Synchronize attributes used for constructed ones, with the
1361 old constructed that were stored in the database.
1363 This apply for instance to msds-keyversionnumber that was
1364 stored and that is now constructed from replpropertymetadata.
1366 :param samdb: An LDB object attached to the currently upgraded samdb
1367 :param names: Various key parameter about current provision.
1369 listAttrs = ["msDs-KeyVersionAttribute"]
1370 hash = search_constructed_attrs_stored(samdb, names.rootdn, listAttrs)
1371 increment_calculated_keyversion_number(samdb, names.rootdn, hash)
1373 def setup_path(file):
1374 return os.path.join(setup_dir, file)
1376 # Synopsis for updateprovision
1377 # 1) get path related to provision to be update (called current)
1378 # 2) open current provision ldbs
1379 # 3) fetch the key provision parameter (domain sid, domain guid, invocationid
1381 # 4) research of lastProvisionUSN in order to get ranges of USN modified
1382 # by either upgradeprovision or provision
1383 # 5) creation of a new provision the latest version of provision script
1384 # (called reference)
1385 # 6) get reference provision paths
1386 # 7) open reference provision ldbs
1387 # 8) setup helpers data that will help the update process
1388 # 9) update the privilege ldb by copying the one of referecence provision to
1389 # the current provision
1390 # 10)get the oemInfo field, this field contains information about the different
1391 # provision that have been done
1392 # 11)Depending on whether oemInfo has the string "alpha9" or alphaxx (x as an
1393 # integer) or none of this the following things are done
1394 # A) When alpha9 or alphaxx is present
1395 # The base sam.ldb file is updated by looking at the difference between
1396 # referrence one and the current one. Everything is copied with the
1397 # exception of lastProvisionUSN attributes.
1398 # B) Other case (it reflect that that provision was done before alpha9)
1399 # The base sam.ldb of the reference provision is copied over
1400 # the current one, if necessary ldb related to partitions are moved
1402 # The highest used USN is fetched so that changed by upgradeprovision
1403 # usn can be tracked
1404 # 12)A Schema object is created, it will be used to provide a complete
1405 # schema to current provision during update (as the schema of the
1406 # current provision might not be complete and so won't allow some
1407 # object to be created)
1408 # 13)Proceed to full update of sam DB (see the separate paragraph about i)
1409 # 14)The secrets db is updated by pull all the difference from the reference
1410 # provision into the current provision
1411 # 15)As the previous step has most probably modified the password stored in
1412 # in secret for the current DC, a new password is generated,
1413 # the kvno is bumped and the entry in samdb is also updated
1414 # 16)For current provision older than alpha9, we must fix the SD a little bit
1415 # administrator to update them because SD used to be generated with the
1416 # system account before alpha9.
1417 # 17)The highest usn modified so far is searched in the database it will be
1418 # the upper limit for usn modified during provision.
1419 # This is done before potential SD recalculation because we do not want
1420 # SD modified during recalculation to be marked as modified during provision
1421 # (and so possibly remplaced at next upgradeprovision)
1422 # 18)Rebuilt SD if the flag indicate to do so
1423 # 19)Check difference between SD of reference provision and those of the
1424 # current provision. The check is done by getting the sddl representation
1425 # of the SD. Each sddl in chuncked into parts (user,group,dacl,sacl)
1426 # Each part is verified separetly, for dacl and sacl ACL is splited into
1427 # ACEs and each ACE is verified separately (so that a permutation in ACE
1428 # didn't raise as an error).
1429 # 20)The oemInfo field is updated to add information about the fact that the
1430 # provision has been updated by the upgradeprovision version xxx
1431 # (the version is the one obtained when starting samba with the --version
1433 # 21)Check if the current provision has all the settings needed for dynamic
1434 # DNS update to work (that is to say the provision is newer than
1435 # january 2010). If not dns configuration file from reference provision
1436 # are copied in a sub folder and the administrator is invited to
1437 # do what is needed.
1438 # 22)If the lastProvisionUSN attribute was present it is updated to add
1439 # the range of usns modified by the current upgradeprovision
1442 # About updating the sam DB
1443 # The update takes place in update_partition function
1444 # This function read both current and reference provision and list all
1445 # the available DN of objects
1446 # If the string representation of a DN in reference provision is
1447 # equal to the string representation of a DN in current provision
1448 # (without taking care of case) then the object is flaged as being
1449 # present. If the object is not present in current provision the object
1450 # is being flaged as missing in current provision. Object present in current
1451 # provision but not in reference provision are ignored.
1452 # Once the list of objects present and missing is done, the deleted object
1453 # containers are created in the differents partitions (if missing)
1455 # Then the function add_missing_entries is called
1456 # This function will go through the list of missing entries by calling
1457 # add_missing_object for the given object. If this function returns 0
1458 # it means that the object needs some other object in order to be created
1459 # The object is reappended at the end of the list to be created later
1460 # (and preferably after all the needed object have been created)
1461 # The function keeps on looping on the list of object to be created until
1462 # it's empty or that the number of defered creation is equal to the number
1463 # of object that still needs to be created.
1465 # The function add_missing_object will first check if the object can be created.
1466 # That is to say that it didn't depends other not yet created objects
1467 # If requisit can't be fullfilled it exists with 0
1468 # Then it will try to create the missing entry by creating doing
1469 # an ldb_message_diff between the object in the reference provision and
1471 # This resulting object is filtered to remove all the back link attribute
1472 # (ie. memberOf) as they will be created by the other linked object (ie.
1473 # the one with the member attribute)
1474 # All attributes specified in the hashAttrNotCopied associative array are
1475 # also removed it's most of the time generated attributes
1477 # After missing entries have been added the update_partition function will
1478 # take care of object that exist but that need some update.
1479 # In order to do so the function update_present is called with the list
1480 # of object that are present in both provision and that might need an update.
1482 # This function handle first case mismatch so that the DN in the current
1483 # provision have the same case as in reference provision
1485 # It will then construct an associative array consiting of attributes as
1486 # key and invocationid as value( if the originating invocation id is
1487 # different from the invocation id of the current DC the value is -1 instead).
1489 # If the range of provision modified attributes is present, the function will
1490 # use the replMetadataProperty update method which is the following:
1491 # Removing attributes that should not be updated: rIDAvailablePool, objectSid,
1492 # creationTime, msDs-KeyVersionNumber, oEMInformation
1493 # Check for each attribute if its usn is within one of the modified by
1494 # provision range and if its originating id is the invocation id of the
1495 # current DC, then validate the update from reference to current.
1496 # If not or if there is no replMetatdataProperty for this attribute then we
1498 # Otherwise (case the range of provision modified attribute is not present) it
1499 # use the following process:
1500 # All attributes that need to be added are accepted at the exeption of those
1501 # listed in hashOverwrittenAtt, in this case the attribute needs to have the
1502 # correct flags specified.
1503 # For attributes that need to be modified or removed, a check is performed
1504 # in OverwrittenAtt, if the attribute is present and the modification flag
1505 # (remove, delete) is one of those listed for this attribute then modification
1506 # is accepted. For complicated handling of attribute update, the control is passed
1507 # to handle_special_case
1511 if __name__ == '__main__':
1512 global defSDmodified
1513 defSDmodified = False
1514 # From here start the big steps of the program
1515 # 1) First get files paths
1516 paths = get_paths(param, smbconf=smbconf)
1517 paths.setup = setup_dir
1518 # Get ldbs with the system session, it is needed for searching
1519 # provision parameters
1520 session = system_session()
1522 # This variable will hold the last provision USN once if it exists.
1525 ldbs = get_ldbs(paths, creds, session, lp)
1526 backupdir = tempfile.mkdtemp(dir=paths.private_dir,
1527 prefix="backupprovision")
1528 backup_provision(paths, backupdir)
1530 ldbs.startTransactions()
1532 # 3) Guess all the needed names (variables in fact) from the current
1534 names = find_provision_key_parameters(ldbs.sam, ldbs.secrets, ldbs.idmap,
1537 lastProvisionUSNs = get_last_provision_usn(ldbs.sam)
1538 if lastProvisionUSNs is not None:
1540 "Find a last provision USN, %d range(s)" % len(lastProvisionUSNs))
1542 # Objects will be created with the admin session
1543 # (not anymore system session)
1544 adm_session = admin_session(lp, str(names.domainsid))
1545 # So we reget handle on objects
1546 # ldbs = get_ldbs(paths, creds, adm_session, lp)
1548 if not sanitychecks(ldbs.sam, names):
1549 message(SIMPLE, "Sanity checks for the upgrade fails, checks messages"
1550 " and correct them before rerunning upgradeprovision")
1553 # Let's see provision parameters
1554 print_provision_key_parameters(names)
1556 # 5) With all this information let's create a fresh new provision used as
1558 message(SIMPLE, "Creating a reference provision")
1559 provisiondir = tempfile.mkdtemp(dir=paths.private_dir,
1560 prefix="referenceprovision")
1561 newprovision(names, setup_dir, creds, session, smbconf, provisiondir,
1566 # We need to get a list of object which SD is directly computed from
1567 # defaultSecurityDescriptor.
1568 # This will allow us to know which object we can rebuild the SD in case
1569 # of change of the parent's SD or of the defaultSD.
1570 # Get file paths of this new provision
1571 newpaths = get_paths(param, targetdir=provisiondir)
1572 new_ldbs = get_ldbs(newpaths, creds, session, lp)
1573 new_ldbs.startTransactions()
1575 # 8) Populate some associative array to ease the update process
1576 # List of attribute which are link and backlink
1577 populate_links(new_ldbs.sam, names.schemadn)
1578 # List of attribute with ASN DN synthax)
1579 populate_dnsyntax(new_ldbs.sam, names.schemadn)
1581 update_privilege(newpaths.private_dir, paths.private_dir)
1583 oem = getOEMInfo(ldbs.sam, str(names.rootdn))
1584 # Do some modification on sam.ldb
1585 ldbs.groupedCommit()
1586 new_ldbs.groupedCommit()
1589 if re.match(".*alpha((9)|(\d\d+)).*", str(oem)):
1591 # Starting from alpha9 we can consider that the structure is quite ok
1592 # and that we should do only dela
1593 delta_update_basesamdb(newpaths.samdb, paths.samdb, creds, session, lp, message)
1596 simple_update_basesamdb(newpaths, paths, names)
1597 ldbs = get_ldbs(paths, creds, session, lp)
1598 removeProvisionUSN(ldbs.sam)
1600 ldbs.startTransactions()
1601 minUSN = int(str(get_max_usn(ldbs.sam, str(names.rootdn)))) + 1
1602 new_ldbs.startTransactions()
1605 schema = Schema(setup_path, names.domainsid, schemadn=str(names.schemadn),
1606 serverdn=str(names.serverdn))
1610 if not update_samdb(new_ldbs.sam, ldbs.sam, names, lastProvisionUSNs,
1612 message(SIMPLE, "Rollbacking every changes. Check the reason"
1614 message(SIMPLE, "In any case your system as it was before"
1616 ldbs.groupedRollback()
1617 new_ldbs.groupedRollback()
1618 shutil.rmtree(provisiondir)
1621 sync_calculated_attributes(ldbs.sam, names)
1623 update_secrets(new_ldbs.secrets, ldbs.secrets, message)
1625 message(SIMPLE, "Update machine account")
1626 update_machine_account_password(ldbs.sam, ldbs.secrets, names)
1628 # 16) SD should be created with admin but as some previous acl were so wrong
1629 # that admin can't modify them we have first to recreate them with the good
1630 # form but with system account and then give the ownership to admin ...
1631 if not re.match(r'.*alpha(9|\d\d+)', str(oem)):
1632 message(SIMPLE, "Fixing old povision SD")
1633 fix_partition_sd(ldbs.sam, names)
1634 rebuild_sd(ldbs.sam, names)
1636 # We calculate the max USN before recalculating the SD because we might
1637 # touch object that have been modified after a provision and we do not
1638 # want that the next upgradeprovision thinks that it has a green light
1642 maxUSN = get_max_usn(ldbs.sam, str(names.rootdn))
1644 # 18) We rebuild SD only if defaultSecurityDescriptor is modified
1645 # But in fact we should do it also if one object has its SD modified as
1646 # child might need rebuild
1648 message(SIMPLE, "Updating SD")
1649 ldbs.sam.set_session_info(adm_session)
1650 # Alpha10 was a bit broken still
1651 if re.match(r'.*alpha(\d|10)', str(oem)):
1652 fix_partition_sd(ldbs.sam, names)
1653 rebuild_sd(ldbs.sam, names)
1656 # Now we are quite confident in the recalculate process of the SD, we make
1658 # Also the check must be done in a clever way as for the moment we just
1660 if opts.debugchangesd:
1661 check_updated_sd(new_ldbs.sam, ldbs.sam, names)
1664 updateOEMInfo(ldbs.sam, str(names.rootdn))
1666 check_for_DNS(newpaths.private_dir, paths.private_dir)
1668 if lastProvisionUSNs is not None:
1669 update_provision_usn(ldbs.sam, minUSN, maxUSN)
1670 if opts.full and (names.policyid is None or names.policyid_dc is None):
1671 update_policyids(names, ldbs.sam)
1672 if opts.full or opts.resetfileacl:
1674 update_gpo(paths, ldbs.sam, names, lp, message, 1)
1675 except ProvisioningError, e:
1676 message(ERROR, "The policy for domain controller is missing,"
1677 " you should restart upgradeprovision with --full")
1680 update_gpo(paths, ldbs.sam, names, lp, message, 0)
1681 except ProvisioningError, e:
1682 message(ERROR, "The policy for domain controller is missing,"
1683 " you should restart upgradeprovision with --full")
1684 ldbs.groupedCommit()
1685 new_ldbs.groupedCommit()
1686 message(SIMPLE, "Upgrade finished !")
1687 # remove reference provision now that everything is done !
1688 shutil.rmtree(provisiondir)
1689 except StandardError, err:
1690 message(ERROR,"A problem has occured when trying to upgrade your provision,"
1691 " a full backup is located at %s" % backupdir)
1693 (typ, val, tb) = sys.exc_info()
1694 traceback.print_exception(typ, val, tb)