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     "password level",
 414     "lanman auth",
 415     "ntlm auth",
 416     "client NTLMv2 auth",
 417     "client lanman auth",
 418     "client plaintext auth",
 419     "read only",
 420     "hosts allow",
 421     "hosts deny",
 422     "log level",
 423     "debuglevel",
 424     "log file",
 425     "smb ports",
 426     "large readwrite",
 427     "max protocol",
 428     "min protocol",
 429     "unicode",
 430     "read raw",
 431     "write raw",
 432     "disable netbios",
 433     "nt status support",
 434     "max mux",
 435     "max xmit",
 436     "name resolve order",
 437     "max wins ttl",
 438     "min wins ttl",
 439     "time server",
 440     "unix extensions",
 441     "use spnego",
 442     "server signing",
 443     "client signing",
 444     "max connections",
 445     "paranoid server security",
 446     "socket options",
 447     "strict sync",
 448     "max print jobs",
 449     "printable",
 450     "print ok",
 451     "printer name",
 452     "printer",
 453     "map system",
 454     "map hidden",
 455     "map archive",
 456     "preferred master",
 457     "prefered master",
 458     "local master",
 459     "browseable",
 460     "browsable",
 461     "wins server",
 462     "wins support",
 463     "csc policy",
 464     "strict locking",
 465     "preload",
 466     "auto services",
 467     "lock dir",
 468     "lock directory",
 469     "pid directory",
 470     "socket address",
 471     "copy",
 472     "include",
 473     "available",
 474     "volume",
 475     "fstype",
 476     "panic action",
 477     "msdfs root",
 478     "host msdfs",
 479     "winbind separator"]
 480
 481
 482 def upgrade_smbconf(oldconf, mark):
 483     """Remove configuration variables not present in Samba4
 484
 485     :param oldconf: Old configuration structure
 486     :param mark: Whether removed configuration variables should be
 487         kept in the new configuration as "samba3:<name>"
 488     """
 489     data = oldconf.data()
 490     newconf = LoadParm()
 491
 492     for s in data:
 493         for p in data[s]:
 494             keep = False
 495             for k in smbconf_keep:
 496                 if smbconf_keep[k] == p:
 497                     keep = True
 498                     break
 499
 500             if keep:
 501                 newconf.set(s, p, oldconf.get(s, p))
 502             elif mark:
 503                 newconf.set(s, "samba3:" + p, oldconf.get(s, p))
 504
 505     return newconf
 506
 507 SAMBA3_PREDEF_NAMES = {
 508         'HKLM': registry.HKEY_LOCAL_MACHINE,
 509 }
 510
 511
 512 def import_registry(samba4_registry, samba3_regdb):
 513     """Import a Samba 3 registry database into the Samba 4 registry.
 514
 515     :param samba4_registry: Samba 4 registry handle.
 516     :param samba3_regdb: Samba 3 registry database handle.
 517     """
 518     def ensure_key_exists(keypath):
 519         (predef_name, keypath) = keypath.split("/", 1)
 520         predef_id = SAMBA3_PREDEF_NAMES[predef_name]
 521         keypath = keypath.replace("/", "\\")
 522         return samba4_registry.create_key(predef_id, keypath)
 523
 524     for key in samba3_regdb.keys():
 525         key_handle = ensure_key_exists(key)
 526         for subkey in samba3_regdb.subkeys(key):
 527             ensure_key_exists(subkey)
 528         for (value_name, (value_type, value_data)) in samba3_regdb.values(key).items():
 529             key_handle.set_value(value_name, value_type, value_data)
 530
 531 def get_posix_attr_from_ldap_backend(logger, ldb_object, base_dn, user, attr):
 532     """Get posix attributes from a samba3 ldap backend
 533     :param ldbs: a list of ldb connection objects
 534     :param base_dn: the base_dn of the connection
 535     :param user: the user to get the attribute for
 536     :param attr: the attribute to be retrieved
 537     """
 538     try:
 539         msg = ldb_object.search(base_dn, scope=ldb.SCOPE_SUBTREE,
 540                         expression=("(&(objectClass=posixAccount)(uid=%s))"
 541                         % (user)), attrs=[attr])
 542     except ldb.LdbError, e:
 543         raise ProvisioningError("Failed to retrieve attribute %s for user %s, the error is: %s", attr, user, e)
 544     else:
 545         if msg.count <= 1:
 546             # This will raise KeyError (which is what we want) if there isn't a entry for this user
 547             return msg[0][attr][0]
 548         else:
 549             logger.warning("LDAP entry for user %s contains more than one %s", user, attr)
 550             raise KeyError
 551
 552
 553 def upgrade_from_samba3(samba3, logger, targetdir, session_info=None,
 554         useeadb=False, dns_backend=None, use_ntvfs=False):
 555     """Upgrade from samba3 database to samba4 AD database
 556
 557     :param samba3: samba3 object
 558     :param logger: Logger object
 559     :param targetdir: samba4 database directory
 560     :param session_info: Session information
 561     """
 562     serverrole = samba3.lp.server_role()
 563
 564     domainname = samba3.lp.get("workgroup")
 565     realm = samba3.lp.get("realm")
 566     netbiosname = samba3.lp.get("netbios name")
 567
 568     if samba3.lp.get("ldapsam:trusted") is None:
 569         samba3.lp.set("ldapsam:trusted", "yes")
 570
 571     # secrets db
 572     try:
 573         secrets_db = samba3.get_secrets_db()
 574     except IOError, e:
 575         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)))
 576
 577     if not domainname:
 578         domainname = secrets_db.domains()[0]
 579         logger.warning("No workgroup specified in smb.conf file, assuming '%s'",
 580                 domainname)
 581
 582     if not realm:
 583         if serverrole == "ROLE_DOMAIN_BDC" or serverrole == "ROLE_DOMAIN_PDC":
 584             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.")
 585         else:
 586             realm = domainname.upper()
 587             logger.warning("No realm specified in smb.conf file, assuming '%s'",
 588                     realm)
 589
 590     # Find machine account and password
 591     next_rid = 1000
 592
 593     try:
 594         machinepass = secrets_db.get_machine_password(netbiosname)
 595     except KeyError:
 596         machinepass = None
 597
 598     if samba3.lp.get("passdb backend").split(":")[0].strip() == "ldapsam":
 599         base_dn =  samba3.lp.get("ldap suffix")
 600         ldapuser = samba3.lp.get("ldap admin dn")
 601         ldappass = (secrets_db.get_ldap_bind_pw(ldapuser)).strip('\x00')
 602         ldap = True
 603     else:
 604         ldapuser = None
 605         ldappass = None
 606         ldap = False
 607
 608     # We must close the direct pytdb database before the C code loads it
 609     secrets_db.close()
 610
 611     # Connect to old password backend
 612     passdb.set_secrets_dir(samba3.lp.get("private dir"))
 613     s3db = samba3.get_sam_db()
 614
 615     # Get domain sid
 616     try:
 617         domainsid = passdb.get_global_sam_sid()
 618     except passdb.error:
 619         raise Exception("Can't find domain sid for '%s', Exiting." % domainname)
 620
 621     # Get machine account, sid, rid
 622     try:
 623         machineacct = s3db.getsampwnam('%s$' % netbiosname)
 624     except passdb.error:
 625         machinerid = None
 626         machinesid = None
 627     else:
 628         machinesid, machinerid = machineacct.user_sid.split()
 629
 630     # Export account policy
 631     logger.info("Exporting account policy")
 632     policy = s3db.get_account_policy()
 633
 634     # Export groups from old passdb backend
 635     logger.info("Exporting groups")
 636     grouplist = s3db.enum_group_mapping()
 637     groupmembers = {}
 638     for group in grouplist:
 639         sid, rid = group.sid.split()
 640         if sid == domainsid:
 641             if rid >= next_rid:
 642                 next_rid = rid + 1
 643
 644         # Get members for each group/alias
 645         if group.sid_name_use == lsa.SID_NAME_ALIAS:
 646             try:
 647                 members = s3db.enum_aliasmem(group.sid)
 648                 groupmembers[str(group.sid)] = members
 649             except passdb.error, e:
 650                 logger.warn("Ignoring group '%s' %s listed but then not found: %s",
 651                             group.nt_name, group.sid, e)
 652                 continue
 653         elif group.sid_name_use == lsa.SID_NAME_DOM_GRP:
 654             try:
 655                 members = s3db.enum_group_members(group.sid)
 656                 groupmembers[str(group.sid)] = members
 657             except passdb.error, e:
 658                 logger.warn("Ignoring group '%s' %s listed but then not found: %s",
 659                             group.nt_name, group.sid, e)
 660                 continue
 661         elif group.sid_name_use == lsa.SID_NAME_WKN_GRP:
 662             (group_dom_sid, rid) = group.sid.split()
 663             if (group_dom_sid != security.dom_sid(security.SID_BUILTIN)):
 664                 logger.warn("Ignoring 'well known' group '%s' (should already be in AD, and have no members)",
 665                             group.nt_name)
 666                 continue
 667             # A number of buggy databases mix up well known groups and aliases.
 668             try:
 669                 members = s3db.enum_aliasmem(group.sid)
 670                 groupmembers[str(group.sid)] = members
 671             except passdb.error, e:
 672                 logger.warn("Ignoring group '%s' %s listed but then not found: %s",
 673                             group.nt_name, group.sid, e)
 674                 continue
 675         else:
 676             logger.warn("Ignoring group '%s' %s with sid_name_use=%d",
 677                         group.nt_name, group.sid, group.sid_name_use)
 678             continue
 679
 680     # Export users from old passdb backend
 681     logger.info("Exporting users")
 682     userlist = s3db.search_users(0)
 683     userdata = {}
 684     uids = {}
 685     admin_user = None
 686     for entry in userlist:
 687         if machinerid and machinerid == entry['rid']:
 688             continue
 689         username = entry['account_name']
 690         if entry['rid'] < 1000:
 691             logger.info("  Skipping wellknown rid=%d (for username=%s)", entry['rid'], username)
 692             continue
 693         if entry['rid'] >= next_rid:
 694             next_rid = entry['rid'] + 1
 695
 696         user = s3db.getsampwnam(username)
 697         acct_type = (user.acct_ctrl & (samr.ACB_NORMAL|samr.ACB_WSTRUST|samr.ACB_SVRTRUST|samr.ACB_DOMTRUST))
 698         if (acct_type == samr.ACB_NORMAL or acct_type == samr.ACB_WSTRUST):
 699             pass
 700
 701         elif acct_type == samr.ACB_SVRTRUST:
 702             logger.warn("  Demoting BDC account trust for %s, this DC must be elevated to an AD DC using 'samba-tool domain promote'" % username[:-1])
 703             user.acct_ctrl = (user.acct_ctrl & ~samr.ACB_SVRTRUST) | samr.ACB_WSTRUST
 704
 705         elif acct_type == samr.ACB_DOMTRUST:
 706             logger.warn("  Skipping inter-domain trust from domain %s, this trust must be re-created as an AD trust" % username[:-1])
 707
 708         elif acct_type == (samr.ACB_NORMAL|samr.ACB_WSTRUST) and username[-1] == '$':
 709             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)
 710             user.acct_ctrl = (user.acct_ctrl & ~samr.ACB_NORMAL)
 711
 712         elif acct_type == (samr.ACB_NORMAL|samr.ACB_SVRTRUST) and username[-1] == '$':
 713             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)
 714             user.acct_ctrl = (user.acct_ctrl & ~samr.ACB_NORMAL)
 715
 716         else:
 717             raise ProvisioningError("""Failed to upgrade due to invalid account %s, account control flags 0x%08X must have exactly one of
 718 ACB_NORMAL (N, 0x%08X), ACB_WSTRUST (W 0x%08X), ACB_SVRTRUST (S 0x%08X) or ACB_DOMTRUST (D 0x%08X).
 719
 720 Please fix this account before attempting to upgrade again
 721 """
 722                                     % (user.acct_flags, username,
 723                                        samr.ACB_NORMAL, samr.ACB_WSTRUST, samr.ACB_SVRTRUST, samr.ACB_DOMTRUST))
 724
 725         userdata[username] = user
 726         try:
 727             uids[username] = s3db.sid_to_id(user.user_sid)[0]
 728         except passdb.error:
 729             try:
 730                 uids[username] = pwd.getpwnam(username).pw_uid
 731             except KeyError:
 732                 pass
 733
 734         if not admin_user and username.lower() == 'root':
 735             admin_user = username
 736         if username.lower() == 'administrator':
 737             admin_user = username
 738
 739         try:
 740             group_memberships = s3db.enum_group_memberships(user);
 741             for group in group_memberships:
 742                 if str(group) in groupmembers:
 743                     if user.user_sid not in groupmembers[str(group)]:
 744                         groupmembers[str(group)].append(user.user_sid)
 745                 else:
 746                     groupmembers[str(group)] = [user.user_sid];
 747         except passdb.error, e:
 748             logger.warn("Ignoring group memberships of '%s' %s: %s",
 749                         username, user.user_sid, e)
 750
 751     logger.info("Next rid = %d", next_rid)
 752
 753     # Check for same username/groupname
 754     group_names = set([g.nt_name for g in grouplist])
 755     user_names = set([u['account_name'] for u in userlist])
 756     common_names = group_names.intersection(user_names)
 757     if common_names:
 758         logger.error("Following names are both user names and group names:")
 759         for name in common_names:
 760             logger.error("   %s" % name)
 761         raise ProvisioningError("Please remove common user/group names before upgrade.")
 762
 763     # Check for same user sid/group sid
 764     group_sids = set([str(g.sid) for g in grouplist])
 765     if len(grouplist) != len(group_sids):
 766         raise ProvisioningError("Please remove duplicate group sid entries before upgrade.")
 767     user_sids = set(["%s-%u" % (domainsid, u['rid']) for u in userlist])
 768     if len(userlist) != len(user_sids):
 769         raise ProvisioningError("Please remove duplicate user sid entries before upgrade.")
 770     common_sids = group_sids.intersection(user_sids)
 771     if common_sids:
 772         logger.error("Following sids are both user and group sids:")
 773         for sid in common_sids:
 774             logger.error("   %s" % str(sid))
 775         raise ProvisioningError("Please remove duplicate sid entries before upgrade.")
 776
 777     # Get posix attributes from ldap or the os
 778     homes = {}
 779     shells = {}
 780     pgids = {}
 781     if ldap:
 782         creds = Credentials()
 783         creds.guess(samba3.lp)
 784         creds.set_bind_dn(ldapuser)
 785         creds.set_password(ldappass)
 786         urls = samba3.lp.get("passdb backend").split(":",1)[1].strip('"')
 787         for url in urls.split():
 788             try:
 789                 ldb_object = Ldb(url, credentials=creds)
 790             except ldb.LdbError, e:
 791                 logger.warning("Could not open ldb connection to %s, the error message is: %s", url, e)
 792             else:
 793                 break
 794     logger.info("Exporting posix attributes")
 795     userlist = s3db.search_users(0)
 796     for entry in userlist:
 797         username = entry['account_name']
 798         if username in uids.keys():
 799             try:
 800                 if ldap:
 801                     homes[username] = get_posix_attr_from_ldap_backend(logger, ldb_object, base_dn, username, "homeDirectory")
 802                 else:
 803                     homes[username] = pwd.getpwnam(username).pw_dir
 804             except KeyError:
 805                 pass
 806             except IndexError:
 807                 pass
 808
 809             try:
 810                 if ldap:
 811                     shells[username] = get_posix_attr_from_ldap_backend(logger, ldb_object, base_dn, username, "loginShell")
 812                 else:
 813                     shells[username] = pwd.getpwnam(username).pw_shell
 814             except KeyError:
 815                 pass
 816             except IndexError:
 817                 pass
 818
 819             try:
 820                 if ldap:
 821                     pgids[username] = get_posix_attr_from_ldap_backend(logger, ldb_object, base_dn, username, "gidNumber")
 822                 else:
 823                     pgids[username] = pwd.getpwnam(username).pw_gid
 824             except KeyError:
 825                 pass
 826             except IndexError:
 827                 pass
 828
 829     logger.info("Reading WINS database")
 830     samba3_winsdb = None
 831     try:
 832         samba3_winsdb = samba3.get_wins_db()
 833     except IOError, e:
 834         logger.warn('Cannot open wins database, Ignoring: %s', str(e))
 835
 836     if not (serverrole == "ROLE_DOMAIN_BDC" or serverrole == "ROLE_DOMAIN_PDC"):
 837         dns_backend = "NONE"
 838
 839     # If we found an admin user, set a fake pw that we will override.
 840     # This avoids us printing out an admin password that we won't actually
 841     # set.
 842     if admin_user:
 843         adminpass = generate_random_password(12, 32)
 844     else:
 845         adminpass = None
 846
 847     # Do full provision
 848     result = provision(logger, session_info, None,
 849                        targetdir=targetdir, realm=realm, domain=domainname,
 850                        domainsid=str(domainsid), next_rid=next_rid,
 851                        dc_rid=machinerid, adminpass = adminpass,
 852                        dom_for_fun_level=dsdb.DS_DOMAIN_FUNCTION_2003,
 853                        hostname=netbiosname.lower(), machinepass=machinepass,
 854                        serverrole=serverrole, samdb_fill=FILL_FULL,
 855                        useeadb=useeadb, dns_backend=dns_backend, use_rfc2307=True,
 856                        use_ntvfs=use_ntvfs, skip_sysvolacl=True)
 857     result.report_logger(logger)
 858
 859     # Import WINS database
 860     logger.info("Importing WINS database")
 861
 862     if samba3_winsdb:
 863         import_wins(Ldb(result.paths.winsdb), samba3_winsdb)
 864
 865     # Set Account policy
 866     logger.info("Importing Account policy")
 867     import_sam_policy(result.samdb, policy, logger)
 868
 869     # Migrate IDMAP database
 870     logger.info("Importing idmap database")
 871     import_idmap(result.idmap, samba3, logger)
 872
 873     # Set the s3 context for samba4 configuration
 874     new_lp_ctx = s3param.get_context()
 875     new_lp_ctx.load(result.lp.configfile)
 876     new_lp_ctx.set("private dir", result.lp.get("private dir"))
 877     new_lp_ctx.set("state directory", result.lp.get("state directory"))
 878     new_lp_ctx.set("lock directory", result.lp.get("lock directory"))
 879
 880     # Connect to samba4 backend
 881     s4_passdb = passdb.PDB(new_lp_ctx.get("passdb backend"))
 882
 883     # Export groups to samba4 backend
 884     logger.info("Importing groups")
 885     for g in grouplist:
 886         # Ignore uninitialized groups (gid = -1)
 887         if g.gid != -1:
 888             add_group_from_mapping_entry(result.samdb, g, logger)
 889             add_ad_posix_idmap_entry(result.samdb, g.sid, g.gid, "ID_TYPE_GID", logger)
 890             add_posix_attrs(samdb=result.samdb, sid=g.sid, name=g.nt_name, nisdomain=domainname.lower(), xid_type="ID_TYPE_GID", logger=logger)
 891
 892     # Export users to samba4 backend
 893     logger.info("Importing users")
 894     for username in userdata:
 895         if username.lower() == 'administrator':
 896             if userdata[username].user_sid != dom_sid(str(domainsid) + "-500"):
 897                 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")))
 898                 raise ProvisioningError("User 'Administrator' in your existing directory does not have SID ending in -500")
 899         if username.lower() == 'root':
 900             if userdata[username].user_sid == dom_sid(str(domainsid) + "-500"):
 901                 logger.warn('User root has been replaced by Administrator')
 902             else:
 903                 logger.warn('User root has been kept in the directory, it should be removed in favour of the Administrator user')
 904
 905         s4_passdb.add_sam_account(userdata[username])
 906         if username in uids:
 907             add_ad_posix_idmap_entry(result.samdb, userdata[username].user_sid, uids[username], "ID_TYPE_UID", logger)
 908             if (username in homes) and (homes[username] is not None) and \
 909                (username in shells) and (shells[username] is not None) and \
 910                (username in pgids) and (pgids[username] is not None):
 911                 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)
 912
 913     logger.info("Adding users to groups")
 914     for g in grouplist:
 915         if str(g.sid) in groupmembers:
 916             add_users_to_group(result.samdb, g, groupmembers[str(g.sid)], logger)
 917
 918     # Set password for administrator
 919     if admin_user:
 920         logger.info("Setting password for administrator")
 921         admin_userdata = s4_passdb.getsampwnam("administrator")
 922         admin_userdata.nt_passwd = userdata[admin_user].nt_passwd
 923         if userdata[admin_user].lanman_passwd:
 924             admin_userdata.lanman_passwd = userdata[admin_user].lanman_passwd
 925         admin_userdata.pass_last_set_time = userdata[admin_user].pass_last_set_time
 926         if userdata[admin_user].pw_history:
 927             admin_userdata.pw_history = userdata[admin_user].pw_history
 928         s4_passdb.update_sam_account(admin_userdata)
 929         logger.info("Administrator password has been set to password of user '%s'", admin_user)
 930
 931     if result.server_role == "active directory domain controller":
 932         setsysvolacl(result.samdb, result.paths.netlogon, result.paths.sysvol,
 933                 result.paths.root_uid, result.paths.root_gid,
 934                 security.dom_sid(result.domainsid), result.names.dnsdomain,
 935                 result.names.domaindn, result.lp, use_ntvfs)
 936
 937     # FIXME: import_registry(registry.Registry(), samba3.get_registry())
 938     # FIXME: shares