python/samba/upgrade.py

   1 # backend code for upgrading from Samba3
   2 # Copyright Jelmer Vernooij 2005-2007
   3 # Copyright Andrew Bartlett 2011
   4 #
   5 # This program is free software; you can redistribute it and/or modify
   6 # it under the terms of the GNU General Public License as published by
   7 # the Free Software Foundation; either version 3 of the License, or
   8 # (at your option) any later version.
   9 #
  10 # This program is distributed in the hope that it will be useful,
  11 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 # GNU General Public License for more details.
  14 #
  15 # You should have received a copy of the GNU General Public License
  16 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
  17 #
  18
  19 """Support code for upgrading from Samba 3 to Samba 4."""
  20
  21 __docformat__ = "restructuredText"
  22
  23 import ldb
  24 import time
  25 import pwd
  26
  27 from samba import Ldb, registry
  28 from samba.param import LoadParm
  29 from samba.provision import provision, FILL_FULL, ProvisioningError, setsysvolacl
  30 from samba.samba3 import passdb
  31 from samba.samba3 import param as s3param
  32 from samba.dcerpc import lsa, samr, security
  33 from samba.dcerpc.security import dom_sid
  34 from samba.credentials import Credentials
  35 from samba import dsdb
  36 from samba.ndr import ndr_pack
  37 from samba import unix2nttime
  38 from samba import generate_random_password
  39
  40
  41 def import_sam_policy(samdb, policy, logger):
  42     """Import a Samba 3 policy.
  43
  44     :param samdb: Samba4 SAM database
  45     :param policy: Samba3 account policy
  46     :param logger: Logger object
  47     """
  48
  49     # Following entries are used -
  50     #    min password length, password history, minimum password age,
  51     #    maximum password age, lockout duration
  52     #
  53     # Following entries are not used -
  54     #    reset count minutes, user must logon to change password,
  55     #    bad lockout minutes, disconnect time
  56
  57     m = ldb.Message()
  58     m.dn = samdb.get_default_basedn()
  59
  60     if 'min password length' in policy:
  61         m['a01'] = ldb.MessageElement(str(policy['min password length']),
  62             ldb.FLAG_MOD_REPLACE, 'minPwdLength')
  63
  64     if 'password history' in policy:
  65         m['a02'] = ldb.MessageElement(str(policy['password history']),
  66             ldb.FLAG_MOD_REPLACE, 'pwdHistoryLength')
  67
  68     if 'minimum password age' in policy:
  69         min_pw_age_unix = policy['minimum password age']
  70         min_pw_age_nt = int(-min_pw_age_unix * (1e7))
  71         m['a03'] = ldb.MessageElement(str(min_pw_age_nt), ldb.FLAG_MOD_REPLACE,
  72             'minPwdAge')
  73
  74     if 'maximum password age' in policy:
  75         max_pw_age_unix = policy['maximum password age']
  76         if max_pw_age_unix == -1 or max_pw_age_unix == 0:
  77             max_pw_age_nt = -0x8000000000000000
  78         else:
  79             max_pw_age_nt = int(-max_pw_age_unix * (1e7))
  80
  81         m['a04'] = ldb.MessageElement(str(max_pw_age_nt), ldb.FLAG_MOD_REPLACE,
  82                                       'maxPwdAge')
  83
  84     if 'lockout duration' in policy:
  85         lockout_duration_mins = policy['lockout duration']
  86         lockout_duration_nt = unix2nttime(lockout_duration_mins * 60)
  87
  88         m['a05'] = ldb.MessageElement(str(lockout_duration_nt),
  89             ldb.FLAG_MOD_REPLACE, 'lockoutDuration')
  90
  91     try:
  92         samdb.modify(m)
  93     except ldb.LdbError, e:
  94         logger.warn("Could not set account policy, (%s)", str(e))
  95
  96
  97 def add_posix_attrs(logger, samdb, sid, name, nisdomain, xid_type, home=None,
  98         shell=None, pgid=None):
  99     """Add posix attributes for the user/group
 100
 101     :param samdb: Samba4 sam.ldb database
 102     :param sid: user/group sid
 103     :param sid: user/group name
 104     :param nisdomain: name of the (fake) NIS domain
 105     :param xid_type: type of id (ID_TYPE_UID/ID_TYPE_GID)
 106     :param home: user homedir (Unix homepath)
 107     :param shell: user shell
 108     :param pgid: users primary group id
 109     """
 110
 111     try:
 112         m = ldb.Message()
 113         m.dn = ldb.Dn(samdb, "<SID=%s>" % str(sid))
 114         if xid_type == "ID_TYPE_UID":
 115             m['unixHomeDirectory'] = ldb.MessageElement(
 116                 str(home), ldb.FLAG_MOD_REPLACE, 'unixHomeDirectory')
 117             m['loginShell'] = ldb.MessageElement(
 118                 str(shell), ldb.FLAG_MOD_REPLACE, 'loginShell')
 119             m['gidNumber'] = ldb.MessageElement(
 120                 str(pgid), ldb.FLAG_MOD_REPLACE, 'gidNumber')
 121
 122         m['msSFU30NisDomain'] = ldb.MessageElement(
 123             str(nisdomain), ldb.FLAG_MOD_REPLACE, 'msSFU30NisDomain')
 124
 125         samdb.modify(m)
 126     except ldb.LdbError, e:
 127         logger.warn(
 128             'Could not add posix attrs for AD entry for sid=%s, (%s)',
 129             str(sid), str(e))
 130
 131 def add_ad_posix_idmap_entry(samdb, sid, xid, xid_type, logger):
 132     """Create idmap entry
 133
 134     :param samdb: Samba4 sam.ldb database
 135     :param sid: user/group sid
 136     :param xid: user/group id
 137     :param xid_type: type of id (ID_TYPE_UID/ID_TYPE_GID)
 138     :param logger: Logger object
 139     """
 140
 141     try:
 142         m = ldb.Message()
 143         m.dn = ldb.Dn(samdb, "<SID=%s>" % str(sid))
 144         if xid_type == "ID_TYPE_UID":
 145             m['uidNumber'] = ldb.MessageElement(
 146                 str(xid), ldb.FLAG_MOD_REPLACE, 'uidNumber')
 147             m['objectClass'] = ldb.MessageElement(
 148                 "posixAccount", ldb.FLAG_MOD_ADD, 'objectClass')
 149         elif xid_type == "ID_TYPE_GID":
 150             m['gidNumber'] = ldb.MessageElement(
 151                 str(xid), ldb.FLAG_MOD_REPLACE, 'gidNumber')
 152             m['objectClass'] = ldb.MessageElement(
 153                 "posixGroup", ldb.FLAG_MOD_ADD, 'objectClass')
 154
 155         samdb.modify(m)
 156     except ldb.LdbError, e:
 157         logger.warn(
 158             'Could not modify AD idmap entry for sid=%s, id=%s, type=%s (%s)',
 159             str(sid), str(xid), xid_type, str(e))
 160
 161
 162 def add_idmap_entry(idmapdb, sid, xid, xid_type, logger):
 163     """Create idmap entry
 164
 165     :param idmapdb: Samba4 IDMAP database
 166     :param sid: user/group sid
 167     :param xid: user/group id
 168     :param xid_type: type of id (ID_TYPE_UID/ID_TYPE_GID)
 169     :param logger: Logger object
 170     """
 171
 172     # First try to see if we already have this entry
 173     found = False
 174     msg = idmapdb.search(expression='objectSid=%s' % str(sid))
 175     if msg.count == 1:
 176         found = True
 177
 178     if found:
 179         try:
 180             m = ldb.Message()
 181             m.dn = msg[0]['dn']
 182             m['xidNumber'] = ldb.MessageElement(
 183                 str(xid), ldb.FLAG_MOD_REPLACE, 'xidNumber')
 184             m['type'] = ldb.MessageElement(
 185                 xid_type, ldb.FLAG_MOD_REPLACE, 'type')
 186             idmapdb.modify(m)
 187         except ldb.LdbError, e:
 188             logger.warn(
 189                 'Could not modify idmap entry for sid=%s, id=%s, type=%s (%s)',
 190                 str(sid), str(xid), xid_type, str(e))
 191     else:
 192         try:
 193             idmapdb.add({"dn": "CN=%s" % str(sid),
 194                         "cn": str(sid),
 195                         "objectClass": "sidMap",
 196                         "objectSid": ndr_pack(sid),
 197                         "type": xid_type,
 198                         "xidNumber": str(xid)})
 199         except ldb.LdbError, e:
 200             logger.warn(
 201                 'Could not add idmap entry for sid=%s, id=%s, type=%s (%s)',
 202                 str(sid), str(xid), xid_type, str(e))
 203
 204
 205 def import_idmap(idmapdb, samba3, logger):
 206     """Import idmap data.
 207
 208     :param idmapdb: Samba4 IDMAP database
 209     :param samba3_idmap: Samba3 IDMAP database to import from
 210     :param logger: Logger object
 211     """
 212
 213     try:
 214         samba3_idmap = samba3.get_idmap_db()
 215     except IOError, e:
 216         logger.warn('Cannot open idmap database, Ignoring: %s', str(e))
 217         return
 218
 219     currentxid = max(samba3_idmap.get_user_hwm(), samba3_idmap.get_group_hwm())
 220     lowerbound = currentxid
 221     # FIXME: upperbound
 222
 223     m = ldb.Message()
 224     m.dn = ldb.Dn(idmapdb, 'CN=CONFIG')
 225     m['lowerbound'] = ldb.MessageElement(
 226         str(lowerbound), ldb.FLAG_MOD_REPLACE, 'lowerBound')
 227     m['xidNumber'] = ldb.MessageElement(
 228         str(currentxid), ldb.FLAG_MOD_REPLACE, 'xidNumber')
 229     idmapdb.modify(m)
 230
 231     for id_type, xid in samba3_idmap.ids():
 232         if id_type == 'UID':
 233             xid_type = 'ID_TYPE_UID'
 234         elif id_type == 'GID':
 235             xid_type = 'ID_TYPE_GID'
 236         else:
 237             logger.warn('Wrong type of entry in idmap (%s), Ignoring', id_type)
 238             continue
 239
 240         sid = samba3_idmap.get_sid(xid, id_type)
 241         add_idmap_entry(idmapdb, dom_sid(sid), xid, xid_type, logger)
 242
 243
 244 def add_group_from_mapping_entry(samdb, groupmap, logger):
 245     """Add or modify group from group mapping entry
 246
 247     param samdb: Samba4 SAM database
 248     param groupmap: Groupmap entry
 249     param logger: Logger object
 250     """
 251
 252     # First try to see if we already have this entry
 253     try:
 254         msg = samdb.search(
 255             base='<SID=%s>' % str(groupmap.sid), scope=ldb.SCOPE_BASE)
 256         found = True
 257     except ldb.LdbError, (ecode, emsg):
 258         if ecode == ldb.ERR_NO_SUCH_OBJECT:
 259             found = False
 260         else:
 261             raise ldb.LdbError(ecode, emsg)
 262
 263     if found:
 264         logger.warn('Group already exists sid=%s, groupname=%s existing_groupname=%s, Ignoring.',
 265                             str(groupmap.sid), groupmap.nt_name, msg[0]['sAMAccountName'][0])
 266     else:
 267         if groupmap.sid_name_use == lsa.SID_NAME_WKN_GRP:
 268             # In a lot of Samba3 databases, aliases are marked as well known groups
 269             (group_dom_sid, rid) = groupmap.sid.split()
 270             if (group_dom_sid != security.dom_sid(security.SID_BUILTIN)):
 271                 return
 272
 273         m = ldb.Message()
 274         m.dn = ldb.Dn(samdb, "CN=%s,CN=Users,%s" % (groupmap.nt_name, samdb.get_default_basedn()))
 275         m['cn'] = ldb.MessageElement(groupmap.nt_name, ldb.FLAG_MOD_ADD, 'cn')
 276         m['objectClass'] = ldb.MessageElement('group', ldb.FLAG_MOD_ADD, 'objectClass')
 277         m['objectSid'] = ldb.MessageElement(ndr_pack(groupmap.sid), ldb.FLAG_MOD_ADD,
 278             'objectSid')
 279         m['sAMAccountName'] = ldb.MessageElement(groupmap.nt_name, ldb.FLAG_MOD_ADD,
 280             'sAMAccountName')
 281
 282         if groupmap.comment:
 283             m['description'] = ldb.MessageElement(groupmap.comment, ldb.FLAG_MOD_ADD,
 284                 'description')
 285
 286         # Fix up incorrect 'well known' groups that are actually builtin (per test above) to be aliases
 287         if groupmap.sid_name_use == lsa.SID_NAME_ALIAS or groupmap.sid_name_use == lsa.SID_NAME_WKN_GRP:
 288             m['groupType'] = ldb.MessageElement(str(dsdb.GTYPE_SECURITY_DOMAIN_LOCAL_GROUP),
 289                 ldb.FLAG_MOD_ADD, 'groupType')
 290
 291         try:
 292             samdb.add(m, controls=["relax:0"])
 293         except ldb.LdbError, e:
 294             logger.warn('Could not add group name=%s (%s)', groupmap.nt_name, str(e))
 295
 296
 297 def add_users_to_group(samdb, group, members, logger):
 298     """Add user/member to group/alias
 299
 300     param samdb: Samba4 SAM database
 301     param group: Groupmap object
 302     param members: List of member SIDs
 303     param logger: Logger object
 304     """
 305     for member_sid in members:
 306         m = ldb.Message()
 307         m.dn = ldb.Dn(samdb, "<SID=%s>" % str(group.sid))
 308         m['a01'] = ldb.MessageElement("<SID=%s>" % str(member_sid), ldb.FLAG_MOD_ADD, 'member')
 309
 310         try:
 311             samdb.modify(m)
 312         except ldb.LdbError, (ecode, emsg):
 313             if ecode == ldb.ERR_ENTRY_ALREADY_EXISTS:
 314                 logger.debug("skipped re-adding member '%s' to group '%s': %s", member_sid, group.sid, emsg)
 315             elif ecode == ldb.ERR_NO_SUCH_OBJECT:
 316                 raise ProvisioningError("Could not add member '%s' to group '%s' as either group or user record doesn't exist: %s" % (member_sid, group.sid, emsg))
 317             else:
 318                 raise ProvisioningError("Could not add member '%s' to group '%s': %s" % (member_sid, group.sid, emsg))
 319
 320
 321 def import_wins(samba4_winsdb, samba3_winsdb):
 322     """Import settings from a Samba3 WINS database.
 323
 324     :param samba4_winsdb: WINS database to import to
 325     :param samba3_winsdb: WINS database to import from
 326     """
 327
 328     version_id = 0
 329
 330     for (name, (ttl, ips, nb_flags)) in samba3_winsdb.items():
 331         version_id += 1
 332
 333         type = int(name.split("#", 1)[1], 16)
 334
 335         if type == 0x1C:
 336             rType = 0x2
 337         elif type & 0x80:
 338             if len(ips) > 1:
 339                 rType = 0x2
 340             else:
 341                 rType = 0x1
 342         else:
 343             if len(ips) > 1:
 344                 rType = 0x3
 345             else:
 346                 rType = 0x0
 347
 348         if ttl > time.time():
 349             rState = 0x0 # active
 350         else:
 351             rState = 0x1 # released
 352
 353         nType = ((nb_flags & 0x60) >> 5)
 354
 355         samba4_winsdb.add({"dn": "name=%s,type=0x%s" % tuple(name.split("#")),
 356                            "type": name.split("#")[1],
 357                            "name": name.split("#")[0],
 358                            "objectClass": "winsRecord",
 359                            "recordType": str(rType),
 360                            "recordState": str(rState),
 361                            "nodeType": str(nType),
 362                            "expireTime": ldb.timestring(ttl),
 363                            "isStatic": "0",
 364                            "versionID": str(version_id),
 365                            "address": ips})
 366
 367     samba4_winsdb.add({"dn": "cn=VERSION",
 368                        "cn": "VERSION",
 369                        "objectClass": "winsMaxVersion",
 370                        "maxVersion": str(version_id)})
 371
 372
 373 def enable_samba3sam(samdb, ldapurl):
 374     """Enable Samba 3 LDAP URL database.
 375
 376     :param samdb: SAM Database.
 377     :param ldapurl: Samba 3 LDAP URL
 378     """
 379     samdb.modify_ldif("""
 380 dn: @MODULES
 381 changetype: modify
 382 replace: @LIST
 383 @LIST: samldb,operational,objectguid,rdn_name,samba3sam
 384 """)
 385
 386     samdb.add({"dn": "@MAP=samba3sam", "@MAP_URL": ldapurl})
 387
 388
 389 smbconf_keep = [
 390     "dos charset",
 391     "unix charset",
 392     "display charset",
 393     "comment",
 394     "path",
 395     "directory",
 396     "workgroup",
 397     "realm",
 398     "netbios name",
 399     "netbios aliases",
 400     "netbios scope",
 401     "server string",
 402     "interfaces",
 403     "bind interfaces only",
 404     "security",
 405     "auth methods",
 406     "encrypt passwords",
 407     "null passwords",
 408     "obey pam restrictions",
 409     "password server",
 410     "smb passwd file",
 411     "private dir",
 412     "passwd chat",
 413     "lanman auth",
 414     "ntlm auth",
 415     "client NTLMv2 auth",
 416     "client lanman auth",
 417     "client plaintext auth",
 418     "read only",
 419     "hosts allow",
 420     "hosts deny",
 421     "log level",
 422     "debuglevel",
 423     "log file",
 424     "smb ports",
 425     "large readwrite",
 426     "max protocol",
 427     "min protocol",
 428     "unicode",
 429     "read raw",
 430     "write raw",
 431     "disable netbios",
 432     "nt status support",
 433     "max mux",
 434     "max xmit",
 435     "name resolve order",
 436     "max wins ttl",
 437     "min wins ttl",
 438     "time server",
 439     "unix extensions",
 440     "use spnego",
 441     "server signing",
 442     "client signing",
 443     "max connections",
 444     "paranoid server security",
 445     "socket options",
 446     "strict sync",
 447     "max print jobs",
 448     "printable",
 449     "print ok",
 450     "printer name",
 451     "printer",
 452     "map system",
 453     "map hidden",
 454     "map archive",
 455     "preferred master",
 456     "prefered master",
 457     "local master",
 458     "browseable",
 459     "browsable",
 460     "wins server",
 461     "wins support",
 462     "csc policy",
 463     "strict locking",
 464     "preload",
 465     "auto services",
 466     "lock dir",
 467     "lock directory",
 468     "pid directory",
 469     "socket address",
 470     "copy",
 471     "include",
 472     "available",
 473     "volume",
 474     "fstype",
 475     "panic action",
 476     "msdfs root",
 477     "host msdfs",
 478     "winbind separator"]
 479
 480
 481 def upgrade_smbconf(oldconf, mark):
 482     """Remove configuration variables not present in Samba4
 483
 484     :param oldconf: Old configuration structure
 485     :param mark: Whether removed configuration variables should be
 486         kept in the new configuration as "samba3:<name>"
 487     """
 488     data = oldconf.data()
 489     newconf = LoadParm()
 490
 491     for s in data:
 492         for p in data[s]:
 493             keep = False
 494             for k in smbconf_keep:
 495                 if smbconf_keep[k] == p:
 496                     keep = True
 497                     break
 498
 499             if keep:
 500                 newconf.set(s, p, oldconf.get(s, p))
 501             elif mark:
 502                 newconf.set(s, "samba3:" + p, oldconf.get(s, p))
 503
 504     return newconf
 505
 506 SAMBA3_PREDEF_NAMES = {
 507         'HKLM': registry.HKEY_LOCAL_MACHINE,
 508 }
 509
 510
 511 def import_registry(samba4_registry, samba3_regdb):
 512     """Import a Samba 3 registry database into the Samba 4 registry.
 513
 514     :param samba4_registry: Samba 4 registry handle.
 515     :param samba3_regdb: Samba 3 registry database handle.
 516     """
 517     def ensure_key_exists(keypath):
 518         (predef_name, keypath) = keypath.split("/", 1)
 519         predef_id = SAMBA3_PREDEF_NAMES[predef_name]
 520         keypath = keypath.replace("/", "\\")
 521         return samba4_registry.create_key(predef_id, keypath)
 522
 523     for key in samba3_regdb.keys():
 524         key_handle = ensure_key_exists(key)
 525         for subkey in samba3_regdb.subkeys(key):
 526             ensure_key_exists(subkey)
 527         for (value_name, (value_type, value_data)) in samba3_regdb.values(key).items():
 528             key_handle.set_value(value_name, value_type, value_data)
 529
 530 def get_posix_attr_from_ldap_backend(logger, ldb_object, base_dn, user, attr):
 531     """Get posix attributes from a samba3 ldap backend
 532     :param ldbs: a list of ldb connection objects
 533     :param base_dn: the base_dn of the connection
 534     :param user: the user to get the attribute for
 535     :param attr: the attribute to be retrieved
 536     """
 537     try:
 538         msg = ldb_object.search(base_dn, scope=ldb.SCOPE_SUBTREE,
 539                         expression=("(&(objectClass=posixAccount)(uid=%s))"
 540                         % (user)), attrs=[attr])
 541     except ldb.LdbError, e:
 542         raise ProvisioningError("Failed to retrieve attribute %s for user %s, the error is: %s", attr, user, e)
 543     else:
 544         if msg.count <= 1:
 545             # This will raise KeyError (which is what we want) if there isn't a entry for this user
 546             return msg[0][attr][0]
 547         else:
 548             logger.warning("LDAP entry for user %s contains more than one %s", user, attr)
 549             raise KeyError
 550
 551
 552 def upgrade_from_samba3(samba3, logger, targetdir, session_info=None,
 553         useeadb=False, dns_backend=None, use_ntvfs=False):
 554     """Upgrade from samba3 database to samba4 AD database
 555
 556     :param samba3: samba3 object
 557     :param logger: Logger object
 558     :param targetdir: samba4 database directory
 559     :param session_info: Session information
 560     """
 561     serverrole = samba3.lp.server_role()
 562
 563     domainname = samba3.lp.get("workgroup")
 564     realm = samba3.lp.get("realm")
 565     netbiosname = samba3.lp.get("netbios name")
 566
 567     if samba3.lp.get("ldapsam:trusted") is None:
 568         samba3.lp.set("ldapsam:trusted", "yes")
 569
 570     # secrets db
 571     try:
 572         secrets_db = samba3.get_secrets_db()
 573     except IOError, e:
 574         raise ProvisioningError("Could not open '%s', the Samba3 secrets database: %s.  Perhaps you specified the incorrect smb.conf, --testparm or --dbdir option?" % (samba3.privatedir_path("secrets.tdb"), str(e)))
 575
 576     if not domainname:
 577         domainname = secrets_db.domains()[0]
 578         logger.warning("No workgroup specified in smb.conf file, assuming '%s'",
 579                 domainname)
 580
 581     if not realm:
 582         if serverrole == "ROLE_DOMAIN_BDC" or serverrole == "ROLE_DOMAIN_PDC":
 583             raise ProvisioningError("No realm specified in smb.conf file and being a DC. That upgrade path doesn't work! Please add a 'realm' directive to your old smb.conf to let us know which one you want to use (it is the DNS name of the AD domain you wish to create.")
 584         else:
 585             realm = domainname.upper()
 586             logger.warning("No realm specified in smb.conf file, assuming '%s'",
 587                     realm)
 588
 589     # Find machine account and password
 590     next_rid = 1000
 591
 592     try:
 593         machinepass = secrets_db.get_machine_password(netbiosname)
 594     except KeyError:
 595         machinepass = None
 596
 597     if samba3.lp.get("passdb backend").split(":")[0].strip() == "ldapsam":
 598         base_dn =  samba3.lp.get("ldap suffix")
 599         ldapuser = samba3.lp.get("ldap admin dn")
 600         ldappass = secrets_db.get_ldap_bind_pw(ldapuser)
 601         if ldappass is None:
 602             raise ProvisioningError("ldapsam passdb backend detected but no LDAP Bind PW found in secrets.tdb for user %s.  Please point this tool at the secrets.tdb that was used by the previous installation.")
 603         ldappass = ldappass.strip('\x00')
 604         ldap = True
 605     else:
 606         ldapuser = None
 607         ldappass = None
 608         ldap = False
 609
 610     # We must close the direct pytdb database before the C code loads it
 611     secrets_db.close()
 612
 613     # Connect to old password backend
 614     passdb.set_secrets_dir(samba3.lp.get("private dir"))
 615     s3db = samba3.get_sam_db()
 616
 617     # Get domain sid
 618     try:
 619         domainsid = passdb.get_global_sam_sid()
 620     except passdb.error:
 621         raise Exception("Can't find domain sid for '%s', Exiting." % domainname)
 622
 623     # Get machine account, sid, rid
 624     try:
 625         machineacct = s3db.getsampwnam('%s$' % netbiosname)
 626     except passdb.error:
 627         machinerid = None
 628         machinesid = None
 629     else:
 630         machinesid, machinerid = machineacct.user_sid.split()
 631
 632     # Export account policy
 633     logger.info("Exporting account policy")
 634     policy = s3db.get_account_policy()
 635
 636     # Export groups from old passdb backend
 637     logger.info("Exporting groups")
 638     grouplist = s3db.enum_group_mapping()
 639     groupmembers = {}
 640     for group in grouplist:
 641         sid, rid = group.sid.split()
 642         if sid == domainsid:
 643             if rid >= next_rid:
 644                 next_rid = rid + 1
 645
 646         # Get members for each group/alias
 647         if group.sid_name_use == lsa.SID_NAME_ALIAS:
 648             try:
 649                 members = s3db.enum_aliasmem(group.sid)
 650                 groupmembers[str(group.sid)] = members
 651             except passdb.error, e:
 652                 logger.warn("Ignoring group '%s' %s listed but then not found: %s",
 653                             group.nt_name, group.sid, e)
 654                 continue
 655         elif group.sid_name_use == lsa.SID_NAME_DOM_GRP:
 656             try:
 657                 members = s3db.enum_group_members(group.sid)
 658                 groupmembers[str(group.sid)] = members
 659             except passdb.error, e:
 660                 logger.warn("Ignoring group '%s' %s listed but then not found: %s",
 661                             group.nt_name, group.sid, e)
 662                 continue
 663         elif group.sid_name_use == lsa.SID_NAME_WKN_GRP:
 664             (group_dom_sid, rid) = group.sid.split()
 665             if (group_dom_sid != security.dom_sid(security.SID_BUILTIN)):
 666                 logger.warn("Ignoring 'well known' group '%s' (should already be in AD, and have no members)",
 667                             group.nt_name)
 668                 continue
 669             # A number of buggy databases mix up well known groups and aliases.
 670             try:
 671                 members = s3db.enum_aliasmem(group.sid)
 672                 groupmembers[str(group.sid)] = members
 673             except passdb.error, e:
 674                 logger.warn("Ignoring group '%s' %s listed but then not found: %s",
 675                             group.nt_name, group.sid, e)
 676                 continue
 677         else:
 678             logger.warn("Ignoring group '%s' %s with sid_name_use=%d",
 679                         group.nt_name, group.sid, group.sid_name_use)
 680             continue
 681
 682     # Export users from old passdb backend
 683     logger.info("Exporting users")
 684     userlist = s3db.search_users(0)
 685     userdata = {}
 686     uids = {}
 687     admin_user = None
 688     for entry in userlist:
 689         if machinerid and machinerid == entry['rid']:
 690             continue
 691         username = entry['account_name']
 692         if entry['rid'] < 1000:
 693             logger.info("  Skipping wellknown rid=%d (for username=%s)", entry['rid'], username)
 694             continue
 695         if entry['rid'] >= next_rid:
 696             next_rid = entry['rid'] + 1
 697
 698         user = s3db.getsampwnam(username)
 699         acct_type = (user.acct_ctrl & (samr.ACB_NORMAL|samr.ACB_WSTRUST|samr.ACB_SVRTRUST|samr.ACB_DOMTRUST))
 700         if acct_type == samr.ACB_SVRTRUST:
 701             logger.warn("  Demoting BDC account trust for %s, this DC must be elevated to an AD DC using 'samba-tool domain dcpromo'" % username[:-1])
 702             user.acct_ctrl = (user.acct_ctrl & ~samr.ACB_SVRTRUST) | samr.ACB_WSTRUST
 703
 704         elif acct_type == samr.ACB_DOMTRUST:
 705             logger.warn("  Skipping inter-domain trust from domain %s, this trust must be re-created as an AD trust" % username[:-1])
 706             continue
 707
 708         elif acct_type == (samr.ACB_WSTRUST) and username[-1] != '$':
 709             logger.warn("  Skipping account %s that has ACB_WSTRUST (W) set but does not end in $.  This account can not have worked, and is probably left over from a misconfiguration." % username)
 710             continue
 711
 712         elif acct_type == (samr.ACB_NORMAL|samr.ACB_WSTRUST) and username[-1] == '$':
 713             logger.warn("  Fixing account %s which had both ACB_NORMAL (U) and ACB_WSTRUST (W) set.  Account will be marked as ACB_WSTRUST (W), i.e. as a domain member" % username)
 714             user.acct_ctrl = (user.acct_ctrl & ~samr.ACB_NORMAL)
 715
 716         elif acct_type == (samr.ACB_NORMAL|samr.ACB_SVRTRUST) and username[-1] == '$':
 717             logger.warn("  Fixing account %s which had both ACB_NORMAL (U) and ACB_SVRTRUST (S) set.  Account will be marked as ACB_WSTRUST (S), i.e. as a domain member" % username)
 718             user.acct_ctrl = (user.acct_ctrl & ~samr.ACB_NORMAL)
 719
 720         elif acct_type == 0 and username[-1] != '$':
 721             user.acct_ctrl = (user.acct_ctrl | samr.ACB_NORMAL)
 722
 723         elif (acct_type == samr.ACB_NORMAL or acct_type == samr.ACB_WSTRUST):
 724             pass
 725
 726         else:
 727             raise ProvisioningError("""Failed to upgrade due to invalid account %s, account control flags 0x%08X must have exactly one of
 728 ACB_NORMAL (N, 0x%08X), ACB_WSTRUST (W 0x%08X), ACB_SVRTRUST (S 0x%08X) or ACB_DOMTRUST (D 0x%08X).
 729
 730 Please fix this account before attempting to upgrade again
 731 """
 732                                     % (username, user.acct_ctrl,
 733                                        samr.ACB_NORMAL, samr.ACB_WSTRUST, samr.ACB_SVRTRUST, samr.ACB_DOMTRUST))
 734
 735         userdata[username] = user
 736         try:
 737             uids[username] = s3db.sid_to_id(user.user_sid)[0]
 738         except passdb.error:
 739             try:
 740                 uids[username] = pwd.getpwnam(username).pw_uid
 741             except KeyError:
 742                 pass
 743
 744         if not admin_user and username.lower() == 'root':
 745             admin_user = username
 746         if username.lower() == 'administrator':
 747             admin_user = username
 748
 749         try:
 750             group_memberships = s3db.enum_group_memberships(user);
 751             for group in group_memberships:
 752                 if str(group) in groupmembers:
 753                     if user.user_sid not in groupmembers[str(group)]:
 754                         groupmembers[str(group)].append(user.user_sid)
 755                 else:
 756                     groupmembers[str(group)] = [user.user_sid];
 757         except passdb.error, e:
 758             logger.warn("Ignoring group memberships of '%s' %s: %s",
 759                         username, user.user_sid, e)
 760
 761     logger.info("Next rid = %d", next_rid)
 762
 763     # Check for same username/groupname
 764     group_names = set([g.nt_name for g in grouplist])
 765     user_names = set([u['account_name'] for u in userlist])
 766     common_names = group_names.intersection(user_names)
 767     if common_names:
 768         logger.error("Following names are both user names and group names:")
 769         for name in common_names:
 770             logger.error("   %s" % name)
 771         raise ProvisioningError("Please remove common user/group names before upgrade.")
 772
 773     # Check for same user sid/group sid
 774     group_sids = set([str(g.sid) for g in grouplist])
 775     if len(grouplist) != len(group_sids):
 776         raise ProvisioningError("Please remove duplicate group sid entries before upgrade.")
 777     user_sids = set(["%s-%u" % (domainsid, u['rid']) for u in userlist])
 778     if len(userlist) != len(user_sids):
 779         raise ProvisioningError("Please remove duplicate user sid entries before upgrade.")
 780     common_sids = group_sids.intersection(user_sids)
 781     if common_sids:
 782         logger.error("Following sids are both user and group sids:")
 783         for sid in common_sids:
 784             logger.error("   %s" % str(sid))
 785         raise ProvisioningError("Please remove duplicate sid entries before upgrade.")
 786
 787     # Get posix attributes from ldap or the os
 788     homes = {}
 789     shells = {}
 790     pgids = {}
 791     if ldap:
 792         creds = Credentials()
 793         creds.guess(samba3.lp)
 794         creds.set_bind_dn(ldapuser)
 795         creds.set_password(ldappass)
 796         urls = samba3.lp.get("passdb backend").split(":",1)[1].strip('"')
 797         for url in urls.split():
 798             try:
 799                 ldb_object = Ldb(url, credentials=creds)
 800             except ldb.LdbError, e:
 801                 raise ProvisiongError("Could not open ldb connection to %s, the error message is: %s" % (url, e))
 802             else:
 803                 break
 804     logger.info("Exporting posix attributes")
 805     userlist = s3db.search_users(0)
 806     for entry in userlist:
 807         username = entry['account_name']
 808         if username in uids.keys():
 809             try:
 810                 if ldap:
 811                     homes[username] = get_posix_attr_from_ldap_backend(logger, ldb_object, base_dn, username, "homeDirectory")
 812                 else:
 813                     homes[username] = pwd.getpwnam(username).pw_dir
 814             except KeyError:
 815                 pass
 816             except IndexError:
 817                 pass
 818
 819             try:
 820                 if ldap:
 821                     shells[username] = get_posix_attr_from_ldap_backend(logger, ldb_object, base_dn, username, "loginShell")
 822                 else:
 823                     shells[username] = pwd.getpwnam(username).pw_shell
 824             except KeyError:
 825                 pass
 826             except IndexError:
 827                 pass
 828
 829             try:
 830                 if ldap:
 831                     pgids[username] = get_posix_attr_from_ldap_backend(logger, ldb_object, base_dn, username, "gidNumber")
 832                 else:
 833                     pgids[username] = pwd.getpwnam(username).pw_gid
 834             except KeyError:
 835                 pass
 836             except IndexError:
 837                 pass
 838
 839     logger.info("Reading WINS database")
 840     samba3_winsdb = None
 841     try:
 842         samba3_winsdb = samba3.get_wins_db()
 843     except IOError, e:
 844         logger.warn('Cannot open wins database, Ignoring: %s', str(e))
 845
 846     if not (serverrole == "ROLE_DOMAIN_BDC" or serverrole == "ROLE_DOMAIN_PDC"):
 847         dns_backend = "NONE"
 848
 849     # If we found an admin user, set a fake pw that we will override.
 850     # This avoids us printing out an admin password that we won't actually
 851     # set.
 852     if admin_user:
 853         adminpass = generate_random_password(12, 32)
 854     else:
 855         adminpass = None
 856
 857     # Do full provision
 858     result = provision(logger, session_info, None,
 859                        targetdir=targetdir, realm=realm, domain=domainname,
 860                        domainsid=str(domainsid), next_rid=next_rid,
 861                        dc_rid=machinerid, adminpass = adminpass,
 862                        dom_for_fun_level=dsdb.DS_DOMAIN_FUNCTION_2003,
 863                        hostname=netbiosname.lower(), machinepass=machinepass,
 864                        serverrole=serverrole, samdb_fill=FILL_FULL,
 865                        useeadb=useeadb, dns_backend=dns_backend, use_rfc2307=True,
 866                        use_ntvfs=use_ntvfs, skip_sysvolacl=True)
 867     result.report_logger(logger)
 868
 869     # Import WINS database
 870     logger.info("Importing WINS database")
 871
 872     if samba3_winsdb:
 873         import_wins(Ldb(result.paths.winsdb), samba3_winsdb)
 874
 875     # Set Account policy
 876     logger.info("Importing Account policy")
 877     import_sam_policy(result.samdb, policy, logger)
 878
 879     # Migrate IDMAP database
 880     logger.info("Importing idmap database")
 881     import_idmap(result.idmap, samba3, logger)
 882
 883     # Set the s3 context for samba4 configuration
 884     new_lp_ctx = s3param.get_context()
 885     new_lp_ctx.load(result.lp.configfile)
 886     new_lp_ctx.set("private dir", result.lp.get("private dir"))
 887     new_lp_ctx.set("state directory", result.lp.get("state directory"))
 888     new_lp_ctx.set("lock directory", result.lp.get("lock directory"))
 889
 890     # Connect to samba4 backend
 891     s4_passdb = passdb.PDB(new_lp_ctx.get("passdb backend"))
 892
 893     # Start a new transaction (should speed this up a little, due to index churn)
 894     result.samdb.transaction_start()
 895
 896     logger.info("Adding groups")
 897     try:
 898         # Export groups to samba4 backend
 899         logger.info("Importing groups")
 900         for g in grouplist:
 901             # Ignore uninitialized groups (gid = -1)
 902             if g.gid != -1:
 903                 add_group_from_mapping_entry(result.samdb, g, logger)
 904                 add_ad_posix_idmap_entry(result.samdb, g.sid, g.gid, "ID_TYPE_GID", logger)
 905                 add_posix_attrs(samdb=result.samdb, sid=g.sid, name=g.nt_name, nisdomain=domainname.lower(), xid_type="ID_TYPE_GID", logger=logger)
 906
 907     except:
 908         # We need this, so that we do not give even more errors due to not cancelling the transaction
 909         result.samdb.transaction_cancel()
 910         raise
 911
 912     logger.info("Commiting 'add groups' transaction to disk")
 913     result.samdb.transaction_commit()
 914
 915     logger.info("Adding users")
 916     # Start a new transaction (should speed this up a little, due to index churn)
 917     result.samdb.transaction_start()
 918
 919     try:
 920         # Export users to samba4 backend
 921         logger.info("Importing users")
 922         for username in userdata:
 923             if username.lower() == 'administrator':
 924                 if userdata[username].user_sid != dom_sid(str(domainsid) + "-500"):
 925                     logger.error("User 'Administrator' in your existing directory has SID %s, expected it to be %s" % (userdata[username].user_sid, dom_sid(str(domainsid) + "-500")))
 926                     raise ProvisioningError("User 'Administrator' in your existing directory does not have SID ending in -500")
 927             if username.lower() == 'root':
 928                 if userdata[username].user_sid == dom_sid(str(domainsid) + "-500"):
 929                     logger.warn('User root has been replaced by Administrator')
 930                 else:
 931                     logger.warn('User root has been kept in the directory, it should be removed in favour of the Administrator user')
 932
 933             s4_passdb.add_sam_account(userdata[username])
 934             if username in uids:
 935                 add_ad_posix_idmap_entry(result.samdb, userdata[username].user_sid, uids[username], "ID_TYPE_UID", logger)
 936                 if (username in homes) and (homes[username] is not None) and \
 937                    (username in shells) and (shells[username] is not None) and \
 938                    (username in pgids) and (pgids[username] is not None):
 939                     add_posix_attrs(samdb=result.samdb, sid=userdata[username].user_sid, name=username, nisdomain=domainname.lower(), xid_type="ID_TYPE_UID", home=homes[username], shell=shells[username], pgid=pgids[username], logger=logger)
 940
 941     except:
 942         # We need this, so that we do not give even more errors due to not cancelling the transaction
 943         result.samdb.transaction_cancel()
 944         raise
 945
 946     logger.info("Commiting 'add users' transaction to disk")
 947     result.samdb.transaction_commit()
 948
 949     logger.info("Adding users to groups")
 950     # Start a new transaction (should speed this up a little, due to index churn)
 951     result.samdb.transaction_start()
 952
 953     try:
 954         for g in grouplist:
 955             if str(g.sid) in groupmembers:
 956                 add_users_to_group(result.samdb, g, groupmembers[str(g.sid)], logger)
 957
 958     except:
 959         # We need this, so that we do not give even more errors due to not cancelling the transaction
 960         result.samdb.transaction_cancel()
 961         raise
 962
 963     logger.info("Commiting 'add users to groups' transaction to disk")
 964     result.samdb.transaction_commit()
 965
 966     # Set password for administrator
 967     if admin_user:
 968         logger.info("Setting password for administrator")
 969         admin_userdata = s4_passdb.getsampwnam("administrator")
 970         admin_userdata.nt_passwd = userdata[admin_user].nt_passwd
 971         if userdata[admin_user].lanman_passwd:
 972             admin_userdata.lanman_passwd = userdata[admin_user].lanman_passwd
 973         admin_userdata.pass_last_set_time = userdata[admin_user].pass_last_set_time
 974         if userdata[admin_user].pw_history:
 975             admin_userdata.pw_history = userdata[admin_user].pw_history
 976         s4_passdb.update_sam_account(admin_userdata)
 977         logger.info("Administrator password has been set to password of user '%s'", admin_user)
 978
 979     if result.server_role == "active directory domain controller":
 980         setsysvolacl(result.samdb, result.paths.netlogon, result.paths.sysvol,
 981                 result.paths.root_uid, result.paths.root_gid,
 982                 security.dom_sid(result.domainsid), result.names.dnsdomain,
 983                 result.names.domaindn, result.lp, use_ntvfs)
 984
 985     # FIXME: import_registry(registry.Registry(), samba3.get_registry())
 986     # FIXME: shares