python/samba/dbchecker.py

   1 # Samba4 AD database checker
   2 #
   3 # Copyright (C) Andrew Tridgell 2011
   4 # Copyright (C) Matthieu Patou <mat@matws.net> 2011
   5 #
   6 # This program is free software; you can redistribute it and/or modify
   7 # it under the terms of the GNU General Public License as published by
   8 # the Free Software Foundation; either version 3 of the License, or
   9 # (at your option) any later version.
  10 #
  11 # This program is distributed in the hope that it will be useful,
  12 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 # GNU General Public License for more details.
  15 #
  16 # You should have received a copy of the GNU General Public License
  17 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
  18 #
  19
  20 import ldb
  21 import samba
  22 import time
  23 from samba import dsdb
  24 from samba import common
  25 from samba.dcerpc import misc
  26 from samba.ndr import ndr_unpack, ndr_pack
  27 from samba.dcerpc import drsblobs
  28 from samba.common import dsdb_Dn
  29 from samba.dcerpc import security
  30 from samba.descriptor import get_wellknown_sds, get_diff_sds
  31 from samba.auth import system_session, admin_session
  32
  33
  34 class dbcheck(object):
  35     """check a SAM database for errors"""
  36
  37     def __init__(self, samdb, samdb_schema=None, verbose=False, fix=False,
  38                  yes=False, quiet=False, in_transaction=False,
  39                  reset_well_known_acls=False):
  40         self.samdb = samdb
  41         self.dict_oid_name = None
  42         self.samdb_schema = (samdb_schema or samdb)
  43         self.verbose = verbose
  44         self.fix = fix
  45         self.yes = yes
  46         self.quiet = quiet
  47         self.remove_all_unknown_attributes = False
  48         self.remove_all_empty_attributes = False
  49         self.fix_all_normalisation = False
  50         self.fix_all_DN_GUIDs = False
  51         self.fix_all_binary_dn = False
  52         self.remove_all_deleted_DN_links = False
  53         self.fix_all_target_mismatch = False
  54         self.fix_all_metadata = False
  55         self.fix_time_metadata = False
  56         self.fix_all_missing_backlinks = False
  57         self.fix_all_orphaned_backlinks = False
  58         self.fix_rmd_flags = False
  59         self.fix_ntsecuritydescriptor = False
  60         self.fix_ntsecuritydescriptor_owner_group = False
  61         self.seize_fsmo_role = False
  62         self.move_to_lost_and_found = False
  63         self.fix_instancetype = False
  64         self.fix_replmetadata_zero_invocationid = False
  65         self.fix_deleted_deleted_objects = False
  66         self.reset_well_known_acls = reset_well_known_acls
  67         self.reset_all_well_known_acls = False
  68         self.in_transaction = in_transaction
  69         self.infrastructure_dn = ldb.Dn(samdb, "CN=Infrastructure," + samdb.domain_dn())
  70         self.naming_dn = ldb.Dn(samdb, "CN=Partitions,%s" % samdb.get_config_basedn())
  71         self.schema_dn = samdb.get_schema_basedn()
  72         self.rid_dn = ldb.Dn(samdb, "CN=RID Manager$,CN=System," + samdb.domain_dn())
  73         self.ntds_dsa = ldb.Dn(samdb, samdb.get_dsServiceName())
  74         self.class_schemaIDGUID = {}
  75         self.wellknown_sds = get_wellknown_sds(self.samdb)
  76
  77         self.name_map = {}
  78         try:
  79             res = samdb.search(base="CN=DnsAdmins,CN=Users,%s" % samdb.domain_dn(), scope=ldb.SCOPE_BASE,
  80                            attrs=["objectSid"])
  81             dnsadmins_sid = ndr_unpack(security.dom_sid, res[0]["objectSid"][0])
  82             self.name_map['DnsAdmins'] = str(dnsadmins_sid)
  83         except ldb.LdbError, (enum, estr):
  84             if enum != ldb.ERR_NO_SUCH_OBJECT:
  85                 raise
  86             pass
  87
  88         self.system_session_info = system_session()
  89         self.admin_session_info = admin_session(None, samdb.get_domain_sid())
  90
  91         res = self.samdb.search(base=self.ntds_dsa, scope=ldb.SCOPE_BASE, attrs=['msDS-hasMasterNCs', 'hasMasterNCs'])
  92         if "msDS-hasMasterNCs" in res[0]:
  93             self.write_ncs = res[0]["msDS-hasMasterNCs"]
  94         else:
  95             # If the Forest Level is less than 2003 then there is no
  96             # msDS-hasMasterNCs, so we fall back to hasMasterNCs
  97             # no need to merge as all the NCs that are in hasMasterNCs must
  98             # also be in msDS-hasMasterNCs (but not the opposite)
  99             if "hasMasterNCs" in res[0]:
 100                 self.write_ncs = res[0]["hasMasterNCs"]
 101             else:
 102                 self.write_ncs = None
 103
 104         res = self.samdb.search(base="", scope=ldb.SCOPE_BASE, attrs=['namingContexts'])
 105         try:
 106             ncs = res[0]["namingContexts"]
 107             self.deleted_objects_containers = []
 108             for nc in ncs:
 109                 try:
 110                     dn = self.samdb.get_wellknown_dn(ldb.Dn(self.samdb, nc),
 111                                                      dsdb.DS_GUID_DELETED_OBJECTS_CONTAINER)
 112                     self.deleted_objects_containers.append(dn)
 113                 except KeyError:
 114                     pass
 115         except KeyError:
 116             pass
 117         except IndexError:
 118             pass
 119
 120     def check_database(self, DN=None, scope=ldb.SCOPE_SUBTREE, controls=[], attrs=['*']):
 121         '''perform a database check, returning the number of errors found'''
 122
 123         res = self.samdb.search(base=DN, scope=scope, attrs=['dn'], controls=controls)
 124         self.report('Checking %u objects' % len(res))
 125         error_count = 0
 126
 127         for object in res:
 128             error_count += self.check_object(object.dn, attrs=attrs)
 129
 130         if DN is None:
 131             error_count += self.check_rootdse()
 132
 133         if error_count != 0 and not self.fix:
 134             self.report("Please use --fix to fix these errors")
 135
 136         self.report('Checked %u objects (%u errors)' % (len(res), error_count))
 137         return error_count
 138
 139     def report(self, msg):
 140         '''print a message unless quiet is set'''
 141         if not self.quiet:
 142             print(msg)
 143
 144     def confirm(self, msg, allow_all=False, forced=False):
 145         '''confirm a change'''
 146         if not self.fix:
 147             return False
 148         if self.quiet:
 149             return self.yes
 150         if self.yes:
 151             forced = True
 152         return common.confirm(msg, forced=forced, allow_all=allow_all)
 153
 154     ################################################################
 155     # a local confirm function with support for 'all'
 156     def confirm_all(self, msg, all_attr):
 157         '''confirm a change with support for "all" '''
 158         if not self.fix:
 159             return False
 160         if self.quiet:
 161             return self.yes
 162         if getattr(self, all_attr) == 'NONE':
 163             return False
 164         if getattr(self, all_attr) == 'ALL':
 165             forced = True
 166         else:
 167             forced = self.yes
 168         c = common.confirm(msg, forced=forced, allow_all=True)
 169         if c == 'ALL':
 170             setattr(self, all_attr, 'ALL')
 171             return True
 172         if c == 'NONE':
 173             setattr(self, all_attr, 'NONE')
 174             return False
 175         return c
 176
 177     def do_modify(self, m, controls, msg, validate=True):
 178         '''perform a modify with optional verbose output'''
 179         if self.verbose:
 180             self.report(self.samdb.write_ldif(m, ldb.CHANGETYPE_MODIFY))
 181         try:
 182             controls = controls + ["local_oid:%s:0" % dsdb.DSDB_CONTROL_DBCHECK]
 183             self.samdb.modify(m, controls=controls, validate=validate)
 184         except Exception, err:
 185             self.report("%s : %s" % (msg, err))
 186             return False
 187         return True
 188
 189     def do_rename(self, from_dn, to_rdn, to_base, controls, msg):
 190         '''perform a modify with optional verbose output'''
 191         if self.verbose:
 192             self.report("""dn: %s
 193 changeType: modrdn
 194 newrdn: %s
 195 deleteOldRdn: 1
 196 newSuperior: %s""" % (str(from_dn), str(to_rdn), str(to_base)))
 197         try:
 198             to_dn = to_rdn + to_base
 199             controls = controls + ["local_oid:%s:0" % dsdb.DSDB_CONTROL_DBCHECK]
 200             self.samdb.rename(from_dn, to_dn, controls=controls)
 201         except Exception, err:
 202             self.report("%s : %s" % (msg, err))
 203             return False
 204         return True
 205
 206     def err_empty_attribute(self, dn, attrname):
 207         '''fix empty attributes'''
 208         self.report("ERROR: Empty attribute %s in %s" % (attrname, dn))
 209         if not self.confirm_all('Remove empty attribute %s from %s?' % (attrname, dn), 'remove_all_empty_attributes'):
 210             self.report("Not fixing empty attribute %s" % attrname)
 211             return
 212
 213         m = ldb.Message()
 214         m.dn = dn
 215         m[attrname] = ldb.MessageElement('', ldb.FLAG_MOD_DELETE, attrname)
 216         if self.do_modify(m, ["relax:0", "show_recycled:1"],
 217                           "Failed to remove empty attribute %s" % attrname, validate=False):
 218             self.report("Removed empty attribute %s" % attrname)
 219
 220     def err_normalise_mismatch(self, dn, attrname, values):
 221         '''fix attribute normalisation errors'''
 222         self.report("ERROR: Normalisation error for attribute %s in %s" % (attrname, dn))
 223         mod_list = []
 224         for val in values:
 225             normalised = self.samdb.dsdb_normalise_attributes(
 226                 self.samdb_schema, attrname, [val])
 227             if len(normalised) != 1:
 228                 self.report("Unable to normalise value '%s'" % val)
 229                 mod_list.append((val, ''))
 230             elif (normalised[0] != val):
 231                 self.report("value '%s' should be '%s'" % (val, normalised[0]))
 232                 mod_list.append((val, normalised[0]))
 233         if not self.confirm_all('Fix normalisation for %s from %s?' % (attrname, dn), 'fix_all_normalisation'):
 234             self.report("Not fixing attribute %s" % attrname)
 235             return
 236
 237         m = ldb.Message()
 238         m.dn = dn
 239         for i in range(0, len(mod_list)):
 240             (val, nval) = mod_list[i]
 241             m['value_%u' % i] = ldb.MessageElement(val, ldb.FLAG_MOD_DELETE, attrname)
 242             if nval != '':
 243                 m['normv_%u' % i] = ldb.MessageElement(nval, ldb.FLAG_MOD_ADD,
 244                     attrname)
 245
 246         if self.do_modify(m, ["relax:0", "show_recycled:1"],
 247                           "Failed to normalise attribute %s" % attrname,
 248                           validate=False):
 249             self.report("Normalised attribute %s" % attrname)
 250
 251     def err_normalise_mismatch_replace(self, dn, attrname, values):
 252         '''fix attribute normalisation errors'''
 253         normalised = self.samdb.dsdb_normalise_attributes(self.samdb_schema, attrname, values)
 254         self.report("ERROR: Normalisation error for attribute '%s' in '%s'" % (attrname, dn))
 255         self.report("Values/Order of values do/does not match: %s/%s!" % (values, list(normalised)))
 256         if list(normalised) == values:
 257             return
 258         if not self.confirm_all("Fix normalisation for '%s' from '%s'?" % (attrname, dn), 'fix_all_normalisation'):
 259             self.report("Not fixing attribute '%s'" % attrname)
 260             return
 261
 262         m = ldb.Message()
 263         m.dn = dn
 264         m[attrname] = ldb.MessageElement(normalised, ldb.FLAG_MOD_REPLACE, attrname)
 265
 266         if self.do_modify(m, ["relax:0", "show_recycled:1"],
 267                           "Failed to normalise attribute %s" % attrname,
 268                           validate=False):
 269             self.report("Normalised attribute %s" % attrname)
 270
 271     def is_deleted_objects_dn(self, dsdb_dn):
 272         '''see if a dsdb_Dn is the special Deleted Objects DN'''
 273         return dsdb_dn.prefix == "B:32:%s:" % dsdb.DS_GUID_DELETED_OBJECTS_CONTAINER
 274
 275     def err_deleted_dn(self, dn, attrname, val, dsdb_dn, correct_dn):
 276         """handle a DN pointing to a deleted object"""
 277         self.report("ERROR: target DN is deleted for %s in object %s - %s" % (attrname, dn, val))
 278         self.report("Target GUID points at deleted DN %s" % correct_dn)
 279         if not self.confirm_all('Remove DN link?', 'remove_all_deleted_DN_links'):
 280             self.report("Not removing")
 281             return
 282         m = ldb.Message()
 283         m.dn = dn
 284         m['old_value'] = ldb.MessageElement(val, ldb.FLAG_MOD_DELETE, attrname)
 285         if self.do_modify(m, ["show_recycled:1", "local_oid:%s:0" % dsdb.DSDB_CONTROL_DBCHECK],
 286                           "Failed to remove deleted DN attribute %s" % attrname):
 287             self.report("Removed deleted DN on attribute %s" % attrname)
 288
 289     def err_missing_dn_GUID(self, dn, attrname, val, dsdb_dn):
 290         """handle a missing target DN (both GUID and DN string form are missing)"""
 291         # check if its a backlink
 292         linkID = self.samdb_schema.get_linkId_from_lDAPDisplayName(attrname)
 293         if (linkID & 1 == 0) and str(dsdb_dn).find('\\0ADEL') == -1:
 294             self.report("Not removing dangling forward link")
 295             return
 296         self.err_deleted_dn(dn, attrname, val, dsdb_dn, dsdb_dn)
 297
 298     def err_incorrect_dn_GUID(self, dn, attrname, val, dsdb_dn, errstr):
 299         """handle a missing GUID extended DN component"""
 300         self.report("ERROR: %s component for %s in object %s - %s" % (errstr, attrname, dn, val))
 301         controls=["extended_dn:1:1", "show_recycled:1"]
 302         try:
 303             res = self.samdb.search(base=str(dsdb_dn.dn), scope=ldb.SCOPE_BASE,
 304                                     attrs=[], controls=controls)
 305         except ldb.LdbError, (enum, estr):
 306             self.report("unable to find object for DN %s - (%s)" % (dsdb_dn.dn, estr))
 307             self.err_missing_dn_GUID(dn, attrname, val, dsdb_dn)
 308             return
 309         if len(res) == 0:
 310             self.report("unable to find object for DN %s" % dsdb_dn.dn)
 311             self.err_missing_dn_GUID(dn, attrname, val, dsdb_dn)
 312             return
 313         dsdb_dn.dn = res[0].dn
 314
 315         if not self.confirm_all('Change DN to %s?' % str(dsdb_dn), 'fix_all_DN_GUIDs'):
 316             self.report("Not fixing %s" % errstr)
 317             return
 318         m = ldb.Message()
 319         m.dn = dn
 320         m['old_value'] = ldb.MessageElement(val, ldb.FLAG_MOD_DELETE, attrname)
 321         m['new_value'] = ldb.MessageElement(str(dsdb_dn), ldb.FLAG_MOD_ADD, attrname)
 322
 323         if self.do_modify(m, ["show_recycled:1"],
 324                           "Failed to fix %s on attribute %s" % (errstr, attrname)):
 325             self.report("Fixed %s on attribute %s" % (errstr, attrname))
 326
 327     def err_incorrect_binary_dn(self, dn, attrname, val, dsdb_dn, errstr):
 328         """handle an incorrect binary DN component"""
 329         self.report("ERROR: %s binary component for %s in object %s - %s" % (errstr, attrname, dn, val))
 330         controls=["extended_dn:1:1", "show_recycled:1"]
 331
 332         if not self.confirm_all('Change DN to %s?' % str(dsdb_dn), 'fix_all_binary_dn'):
 333             self.report("Not fixing %s" % errstr)
 334             return
 335         m = ldb.Message()
 336         m.dn = dn
 337         m['old_value'] = ldb.MessageElement(val, ldb.FLAG_MOD_DELETE, attrname)
 338         m['new_value'] = ldb.MessageElement(str(dsdb_dn), ldb.FLAG_MOD_ADD, attrname)
 339
 340         if self.do_modify(m, ["show_recycled:1"],
 341                           "Failed to fix %s on attribute %s" % (errstr, attrname)):
 342             self.report("Fixed %s on attribute %s" % (errstr, attrname))
 343
 344     def err_dn_target_mismatch(self, dn, attrname, val, dsdb_dn, correct_dn, errstr):
 345         """handle a DN string being incorrect"""
 346         self.report("ERROR: incorrect DN string component for %s in object %s - %s" % (attrname, dn, val))
 347         dsdb_dn.dn = correct_dn
 348
 349         if not self.confirm_all('Change DN to %s?' % str(dsdb_dn), 'fix_all_target_mismatch'):
 350             self.report("Not fixing %s" % errstr)
 351             return
 352         m = ldb.Message()
 353         m.dn = dn
 354         m['old_value'] = ldb.MessageElement(val, ldb.FLAG_MOD_DELETE, attrname)
 355         m['new_value'] = ldb.MessageElement(str(dsdb_dn), ldb.FLAG_MOD_ADD, attrname)
 356         if self.do_modify(m, ["show_recycled:1"],
 357                           "Failed to fix incorrect DN string on attribute %s" % attrname):
 358             self.report("Fixed incorrect DN string on attribute %s" % (attrname))
 359
 360     def err_unknown_attribute(self, obj, attrname):
 361         '''handle an unknown attribute error'''
 362         self.report("ERROR: unknown attribute '%s' in %s" % (attrname, obj.dn))
 363         if not self.confirm_all('Remove unknown attribute %s' % attrname, 'remove_all_unknown_attributes'):
 364             self.report("Not removing %s" % attrname)
 365             return
 366         m = ldb.Message()
 367         m.dn = obj.dn
 368         m['old_value'] = ldb.MessageElement([], ldb.FLAG_MOD_DELETE, attrname)
 369         if self.do_modify(m, ["relax:0", "show_recycled:1"],
 370                           "Failed to remove unknown attribute %s" % attrname):
 371             self.report("Removed unknown attribute %s" % (attrname))
 372
 373     def err_missing_backlink(self, obj, attrname, val, backlink_name, target_dn):
 374         '''handle a missing backlink value'''
 375         self.report("ERROR: missing backlink attribute '%s' in %s for link %s in %s" % (backlink_name, target_dn, attrname, obj.dn))
 376         if not self.confirm_all('Fix missing backlink %s' % backlink_name, 'fix_all_missing_backlinks'):
 377             self.report("Not fixing missing backlink %s" % backlink_name)
 378             return
 379         m = ldb.Message()
 380         m.dn = obj.dn
 381         m['old_value'] = ldb.MessageElement(val, ldb.FLAG_MOD_DELETE, attrname)
 382         m['new_value'] = ldb.MessageElement(val, ldb.FLAG_MOD_ADD, attrname)
 383         if self.do_modify(m, ["show_recycled:1"],
 384                           "Failed to fix missing backlink %s" % backlink_name):
 385             self.report("Fixed missing backlink %s" % (backlink_name))
 386
 387     def err_incorrect_rmd_flags(self, obj, attrname, revealed_dn):
 388         '''handle a incorrect RMD_FLAGS value'''
 389         rmd_flags = int(revealed_dn.dn.get_extended_component("RMD_FLAGS"))
 390         self.report("ERROR: incorrect RMD_FLAGS value %u for attribute '%s' in %s for link %s" % (rmd_flags, attrname, obj.dn, revealed_dn.dn.extended_str()))
 391         if not self.confirm_all('Fix incorrect RMD_FLAGS %u' % rmd_flags, 'fix_rmd_flags'):
 392             self.report("Not fixing incorrect RMD_FLAGS %u" % rmd_flags)
 393             return
 394         m = ldb.Message()
 395         m.dn = obj.dn
 396         m['old_value'] = ldb.MessageElement(str(revealed_dn), ldb.FLAG_MOD_DELETE, attrname)
 397         if self.do_modify(m, ["show_recycled:1", "reveal_internals:0", "show_deleted:0"],
 398                           "Failed to fix incorrect RMD_FLAGS %u" % rmd_flags):
 399             self.report("Fixed incorrect RMD_FLAGS %u" % (rmd_flags))
 400
 401     def err_orphaned_backlink(self, obj, attrname, val, link_name, target_dn):
 402         '''handle a orphaned backlink value'''
 403         self.report("ERROR: orphaned backlink attribute '%s' in %s for link %s in %s" % (attrname, obj.dn, link_name, target_dn))
 404         if not self.confirm_all('Remove orphaned backlink %s' % link_name, 'fix_all_orphaned_backlinks'):
 405             self.report("Not removing orphaned backlink %s" % link_name)
 406             return
 407         m = ldb.Message()
 408         m.dn = obj.dn
 409         m['value'] = ldb.MessageElement(val, ldb.FLAG_MOD_DELETE, attrname)
 410         if self.do_modify(m, ["show_recycled:1", "relax:0"],
 411                           "Failed to fix orphaned backlink %s" % link_name):
 412             self.report("Fixed orphaned backlink %s" % (link_name))
 413
 414     def err_no_fsmoRoleOwner(self, obj):
 415         '''handle a missing fSMORoleOwner'''
 416         self.report("ERROR: fSMORoleOwner not found for role %s" % (obj.dn))
 417         res = self.samdb.search("",
 418                                 scope=ldb.SCOPE_BASE, attrs=["dsServiceName"])
 419         assert len(res) == 1
 420         serviceName = res[0]["dsServiceName"][0]
 421         if not self.confirm_all('Sieze role %s onto current DC by adding fSMORoleOwner=%s' % (obj.dn, serviceName), 'seize_fsmo_role'):
 422             self.report("Not Siezing role %s onto current DC by adding fSMORoleOwner=%s" % (obj.dn, serviceName))
 423             return
 424         m = ldb.Message()
 425         m.dn = obj.dn
 426         m['value'] = ldb.MessageElement(serviceName, ldb.FLAG_MOD_ADD, 'fSMORoleOwner')
 427         if self.do_modify(m, [],
 428                           "Failed to sieze role %s onto current DC by adding fSMORoleOwner=%s" % (obj.dn, serviceName)):
 429             self.report("Siezed role %s onto current DC by adding fSMORoleOwner=%s" % (obj.dn, serviceName))
 430
 431     def err_missing_parent(self, obj):
 432         '''handle a missing parent'''
 433         self.report("ERROR: parent object not found for %s" % (obj.dn))
 434         if not self.confirm_all('Move object %s into LostAndFound?' % (obj.dn), 'move_to_lost_and_found'):
 435             self.report('Not moving object %s into LostAndFound' % (obj.dn))
 436             return
 437
 438         keep_transaction = True
 439         self.samdb.transaction_start()
 440         try:
 441             nc_root = self.samdb.get_nc_root(obj.dn);
 442             lost_and_found = self.samdb.get_wellknown_dn(nc_root, dsdb.DS_GUID_LOSTANDFOUND_CONTAINER)
 443             new_dn = ldb.Dn(self.samdb, str(obj.dn))
 444             new_dn.remove_base_components(len(new_dn) - 1)
 445             if self.do_rename(obj.dn, new_dn, lost_and_found, ["show_deleted:0", "relax:0"],
 446                               "Failed to rename object %s into lostAndFound at %s" % (obj.dn, new_dn + lost_and_found)):
 447                 self.report("Renamed object %s into lostAndFound at %s" % (obj.dn, new_dn + lost_and_found))
 448
 449                 m = ldb.Message()
 450                 m.dn = obj.dn
 451                 m['lastKnownParent'] = ldb.MessageElement(str(obj.dn.parent()), ldb.FLAG_MOD_REPLACE, 'lastKnownParent')
 452
 453                 if self.do_modify(m, [],
 454                                   "Failed to set lastKnownParent on lostAndFound object at %s" % (new_dn + lost_and_found)):
 455                     self.report("Set lastKnownParent on lostAndFound object at %s" % (new_dn + lost_and_found))
 456                     keep_transaction = True
 457         except:
 458             self.samdb.transaction_cancel()
 459             raise
 460
 461         if keep_transaction:
 462             self.samdb.transaction_commit()
 463         else:
 464             self.samdb.transaction_cancel()
 465
 466
 467     def err_wrong_instancetype(self, obj, calculated_instancetype):
 468         '''handle a wrong instanceType'''
 469         self.report("ERROR: wrong instanceType %s on %s, should be %d" % (obj["instanceType"], obj.dn, calculated_instancetype))
 470         if not self.confirm_all('Change instanceType from %s to %d on %s?' % (obj["instanceType"], calculated_instancetype, obj.dn), 'fix_instancetype'):
 471             self.report('Not changing instanceType from %s to %d on %s' % (obj["instanceType"], calculated_instancetype, obj.dn))
 472             return
 473
 474         m = ldb.Message()
 475         m.dn = obj.dn
 476         m['value'] = ldb.MessageElement(str(calculated_instancetype), ldb.FLAG_MOD_REPLACE, 'instanceType')
 477         if self.do_modify(m, ["local_oid:%s:0" % dsdb.DSDB_CONTROL_DBCHECK_MODIFY_RO_REPLICA],
 478                           "Failed to correct missing instanceType on %s by setting instanceType=%d" % (obj.dn, calculated_instancetype)):
 479             self.report("Corrected instancetype on %s by setting instanceType=%d" % (obj.dn, calculated_instancetype))
 480
 481     def find_revealed_link(self, dn, attrname, guid):
 482         '''return a revealed link in an object'''
 483         res = self.samdb.search(base=dn, scope=ldb.SCOPE_BASE, attrs=[attrname],
 484                                 controls=["show_deleted:0", "extended_dn:0", "reveal_internals:0"])
 485         syntax_oid = self.samdb_schema.get_syntax_oid_from_lDAPDisplayName(attrname)
 486         for val in res[0][attrname]:
 487             dsdb_dn = dsdb_Dn(self.samdb, val, syntax_oid)
 488             guid2 = dsdb_dn.dn.get_extended_component("GUID")
 489             if guid == guid2:
 490                 return dsdb_dn
 491         return None
 492
 493     def check_dn(self, obj, attrname, syntax_oid):
 494         '''check a DN attribute for correctness'''
 495         error_count = 0
 496         for val in obj[attrname]:
 497             dsdb_dn = dsdb_Dn(self.samdb, val, syntax_oid)
 498
 499             # all DNs should have a GUID component
 500             guid = dsdb_dn.dn.get_extended_component("GUID")
 501             if guid is None:
 502                 error_count += 1
 503                 self.err_incorrect_dn_GUID(obj.dn, attrname, val, dsdb_dn,
 504                     "missing GUID")
 505                 continue
 506
 507             guidstr = str(misc.GUID(guid))
 508
 509             attrs = ['isDeleted']
 510
 511             if (str(attrname).lower() == 'msds-hasinstantiatedncs') and (obj.dn == self.ntds_dsa):
 512                 fixing_msDS_HasInstantiatedNCs = True
 513                 attrs.append("instanceType")
 514             else:
 515                 fixing_msDS_HasInstantiatedNCs = False
 516
 517             linkID = self.samdb_schema.get_linkId_from_lDAPDisplayName(attrname)
 518             reverse_link_name = self.samdb_schema.get_backlink_from_lDAPDisplayName(attrname)
 519             if reverse_link_name is not None:
 520                 attrs.append(reverse_link_name)
 521
 522             # check its the right GUID
 523             try:
 524                 res = self.samdb.search(base="<GUID=%s>" % guidstr, scope=ldb.SCOPE_BASE,
 525                                         attrs=attrs, controls=["extended_dn:1:1", "show_recycled:1"])
 526             except ldb.LdbError, (enum, estr):
 527                 error_count += 1
 528                 self.err_incorrect_dn_GUID(obj.dn, attrname, val, dsdb_dn, "incorrect GUID")
 529                 continue
 530
 531             if fixing_msDS_HasInstantiatedNCs:
 532                 dsdb_dn.prefix = "B:8:%08X:" % int(res[0]['instanceType'][0])
 533                 dsdb_dn.binary = "%08X" % int(res[0]['instanceType'][0])
 534
 535                 if str(dsdb_dn) != val:
 536                     error_count +=1
 537                     self.err_incorrect_binary_dn(obj.dn, attrname, val, dsdb_dn, "incorrect instanceType part of Binary DN")
 538                     continue
 539
 540             # now we have two cases - the source object might or might not be deleted
 541             is_deleted = 'isDeleted' in obj and obj['isDeleted'][0].upper() == 'TRUE'
 542             target_is_deleted = 'isDeleted' in res[0] and res[0]['isDeleted'][0].upper() == 'TRUE'
 543
 544             # the target DN is not allowed to be deleted, unless the target DN is the
 545             # special Deleted Objects container
 546             if target_is_deleted and not is_deleted and not self.is_deleted_objects_dn(dsdb_dn):
 547                 error_count += 1
 548                 self.err_deleted_dn(obj.dn, attrname, val, dsdb_dn, res[0].dn)
 549                 continue
 550
 551             # check the DN matches in string form
 552             if res[0].dn.extended_str() != dsdb_dn.dn.extended_str():
 553                 error_count += 1
 554                 self.err_dn_target_mismatch(obj.dn, attrname, val, dsdb_dn,
 555                                             res[0].dn, "incorrect string version of DN")
 556                 continue
 557
 558             if is_deleted and not target_is_deleted and reverse_link_name is not None:
 559                 revealed_dn = self.find_revealed_link(obj.dn, attrname, guid)
 560                 rmd_flags = revealed_dn.dn.get_extended_component("RMD_FLAGS")
 561                 if rmd_flags is not None and (int(rmd_flags) & 1) == 0:
 562                     # the RMD_FLAGS for this link should be 1, as the target is deleted
 563                     self.err_incorrect_rmd_flags(obj, attrname, revealed_dn)
 564                     continue
 565
 566             # check the reverse_link is correct if there should be one
 567             if reverse_link_name is not None:
 568                 match_count = 0
 569                 if reverse_link_name in res[0]:
 570                     for v in res[0][reverse_link_name]:
 571                         if v == obj.dn.extended_str():
 572                             match_count += 1
 573                 if match_count != 1:
 574                     error_count += 1
 575                     if linkID & 1:
 576                         self.err_orphaned_backlink(obj, attrname, val, reverse_link_name, dsdb_dn.dn)
 577                     else:
 578                         self.err_missing_backlink(obj, attrname, val, reverse_link_name, dsdb_dn.dn)
 579                     continue
 580
 581         return error_count
 582
 583
 584     def get_originating_time(self, val, attid):
 585         '''Read metadata properties and return the originating time for
 586            a given attributeId.
 587
 588            :return: the originating time or 0 if not found
 589         '''
 590
 591         repl = ndr_unpack(drsblobs.replPropertyMetaDataBlob, str(val))
 592         obj = repl.ctr
 593
 594         for o in repl.ctr.array:
 595             if o.attid == attid:
 596                 return o.originating_change_time
 597
 598         return 0
 599
 600     def process_metadata(self, val):
 601         '''Read metadata properties and list attributes in it'''
 602
 603         list_att = []
 604
 605         repl = ndr_unpack(drsblobs.replPropertyMetaDataBlob, str(val))
 606         obj = repl.ctr
 607
 608         for o in repl.ctr.array:
 609             att = self.samdb_schema.get_lDAPDisplayName_by_attid(o.attid)
 610             list_att.append(att.lower())
 611
 612         return list_att
 613
 614
 615     def fix_metadata(self, dn, attr):
 616         '''re-write replPropertyMetaData elements for a single attribute for a
 617         object. This is used to fix missing replPropertyMetaData elements'''
 618         res = self.samdb.search(base = dn, scope=ldb.SCOPE_BASE, attrs = [attr],
 619                                 controls = ["search_options:1:2", "show_recycled:1"])
 620         msg = res[0]
 621         nmsg = ldb.Message()
 622         nmsg.dn = dn
 623         nmsg[attr] = ldb.MessageElement(msg[attr], ldb.FLAG_MOD_REPLACE, attr)
 624         if self.do_modify(nmsg, ["relax:0", "provision:0", "show_recycled:1"],
 625                           "Failed to fix metadata for attribute %s" % attr):
 626             self.report("Fixed metadata for attribute %s" % attr)
 627
 628     def ace_get_effective_inherited_type(self, ace):
 629         if ace.flags & security.SEC_ACE_FLAG_INHERIT_ONLY:
 630             return None
 631
 632         check = False
 633         if ace.type == security.SEC_ACE_TYPE_ACCESS_ALLOWED_OBJECT:
 634             check = True
 635         elif ace.type == security.SEC_ACE_TYPE_ACCESS_DENIED_OBJECT:
 636             check = True
 637         elif ace.type == security.SEC_ACE_TYPE_SYSTEM_AUDIT_OBJECT:
 638             check = True
 639         elif ace.type == security.SEC_ACE_TYPE_SYSTEM_ALARM_OBJECT:
 640             check = True
 641
 642         if not check:
 643             return None
 644
 645         if not ace.object.flags & security.SEC_ACE_INHERITED_OBJECT_TYPE_PRESENT:
 646             return None
 647
 648         return str(ace.object.inherited_type)
 649
 650     def lookup_class_schemaIDGUID(self, cls):
 651         if cls in self.class_schemaIDGUID:
 652             return self.class_schemaIDGUID[cls]
 653
 654         flt = "(&(ldapDisplayName=%s)(objectClass=classSchema))" % cls
 655         res = self.samdb.search(base=self.schema_dn,
 656                                 expression=flt,
 657                                 attrs=["schemaIDGUID"])
 658         t = str(ndr_unpack(misc.GUID, res[0]["schemaIDGUID"][0]))
 659
 660         self.class_schemaIDGUID[cls] = t
 661         return t
 662
 663     def process_sd(self, dn, obj):
 664         sd_attr = "nTSecurityDescriptor"
 665         sd_val = obj[sd_attr]
 666
 667         sd = ndr_unpack(security.descriptor, str(sd_val))
 668
 669         is_deleted = 'isDeleted' in obj and obj['isDeleted'][0].upper() == 'TRUE'
 670         if is_deleted:
 671             # we don't fix deleted objects
 672             return (sd, None)
 673
 674         sd_clean = security.descriptor()
 675         sd_clean.owner_sid = sd.owner_sid
 676         sd_clean.group_sid = sd.group_sid
 677         sd_clean.type = sd.type
 678         sd_clean.revision = sd.revision
 679
 680         broken = False
 681         last_inherited_type = None
 682
 683         aces = []
 684         if sd.sacl is not None:
 685             aces = sd.sacl.aces
 686         for i in range(0, len(aces)):
 687             ace = aces[i]
 688
 689             if not ace.flags & security.SEC_ACE_FLAG_INHERITED_ACE:
 690                 sd_clean.sacl_add(ace)
 691                 continue
 692
 693             t = self.ace_get_effective_inherited_type(ace)
 694             if t is None:
 695                 continue
 696
 697             if last_inherited_type is not None:
 698                 if t != last_inherited_type:
 699                     # if it inherited from more than
 700                     # one type it's very likely to be broken
 701                     #
 702                     # If not the recalculation will calculate
 703                     # the same result.
 704                     broken = True
 705                 continue
 706
 707             last_inherited_type = t
 708
 709         aces = []
 710         if sd.dacl is not None:
 711             aces = sd.dacl.aces
 712         for i in range(0, len(aces)):
 713             ace = aces[i]
 714
 715             if not ace.flags & security.SEC_ACE_FLAG_INHERITED_ACE:
 716                 sd_clean.dacl_add(ace)
 717                 continue
 718
 719             t = self.ace_get_effective_inherited_type(ace)
 720             if t is None:
 721                 continue
 722
 723             if last_inherited_type is not None:
 724                 if t != last_inherited_type:
 725                     # if it inherited from more than
 726                     # one type it's very likely to be broken
 727                     #
 728                     # If not the recalculation will calculate
 729                     # the same result.
 730                     broken = True
 731                 continue
 732
 733             last_inherited_type = t
 734
 735         if broken:
 736             return (sd_clean, sd)
 737
 738         if last_inherited_type is None:
 739             # ok
 740             return (sd, None)
 741
 742         cls = None
 743         try:
 744             cls = obj["objectClass"][-1]
 745         except KeyError, e:
 746             pass
 747
 748         if cls is None:
 749             res = self.samdb.search(base=dn, scope=ldb.SCOPE_BASE,
 750                                     attrs=["isDeleted", "objectClass"],
 751                                     controls=["show_recycled:1"])
 752             o = res[0]
 753             is_deleted = 'isDeleted' in o and o['isDeleted'][0].upper() == 'TRUE'
 754             if is_deleted:
 755                 # we don't fix deleted objects
 756                 return (sd, None)
 757             cls = o["objectClass"][-1]
 758
 759         t = self.lookup_class_schemaIDGUID(cls)
 760
 761         if t != last_inherited_type:
 762             # broken
 763             return (sd_clean, sd)
 764
 765         # ok
 766         return (sd, None)
 767
 768     def err_wrong_sd(self, dn, sd, sd_broken):
 769         '''re-write the SD due to incorrect inherited ACEs'''
 770         sd_attr = "nTSecurityDescriptor"
 771         sd_val = ndr_pack(sd)
 772         sd_flags = security.SECINFO_DACL | security.SECINFO_SACL
 773
 774         if not self.confirm_all('Fix %s on %s?' % (sd_attr, dn), 'fix_ntsecuritydescriptor'):
 775             self.report('Not fixing %s on %s\n' % (sd_attr, dn))
 776             return
 777
 778         nmsg = ldb.Message()
 779         nmsg.dn = dn
 780         nmsg[sd_attr] = ldb.MessageElement(sd_val, ldb.FLAG_MOD_REPLACE, sd_attr)
 781         if self.do_modify(nmsg, ["sd_flags:1:%d" % sd_flags],
 782                           "Failed to fix attribute %s" % sd_attr):
 783             self.report("Fixed attribute '%s' of '%s'\n" % (sd_attr, dn))
 784
 785     def err_wrong_default_sd(self, dn, sd, sd_old, diff):
 786         '''re-write the SD due to not matching the default (optional mode for fixing an incorrect provision)'''
 787         sd_attr = "nTSecurityDescriptor"
 788         sd_val = ndr_pack(sd)
 789         sd_old_val = ndr_pack(sd_old)
 790         sd_flags = security.SECINFO_DACL | security.SECINFO_SACL
 791         if sd.owner_sid is not None:
 792             sd_flags |= security.SECINFO_OWNER
 793         if sd.group_sid is not None:
 794             sd_flags |= security.SECINFO_GROUP
 795
 796         if not self.confirm_all('Reset %s on %s back to provision default?\n%s' % (sd_attr, dn, diff), 'reset_all_well_known_acls'):
 797             self.report('Not resetting %s on %s\n' % (sd_attr, dn))
 798             return
 799
 800         m = ldb.Message()
 801         m.dn = dn
 802         m[sd_attr] = ldb.MessageElement(sd_val, ldb.FLAG_MOD_REPLACE, sd_attr)
 803         if self.do_modify(m, ["sd_flags:1:%d" % sd_flags],
 804                           "Failed to reset attribute %s" % sd_attr):
 805             self.report("Fixed attribute '%s' of '%s'\n" % (sd_attr, dn))
 806
 807     def err_missing_sd_owner(self, dn, sd):
 808         '''re-write the SD due to a missing owner or group'''
 809         sd_attr = "nTSecurityDescriptor"
 810         sd_val = ndr_pack(sd)
 811         sd_flags = security.SECINFO_OWNER | security.SECINFO_GROUP
 812
 813         if not self.confirm_all('Fix missing owner or group in %s on %s?' % (sd_attr, dn), 'fix_ntsecuritydescriptor_owner_group'):
 814             self.report('Not fixing missing owner or group %s on %s\n' % (sd_attr, dn))
 815             return
 816
 817         nmsg = ldb.Message()
 818         nmsg.dn = dn
 819         nmsg[sd_attr] = ldb.MessageElement(sd_val, ldb.FLAG_MOD_REPLACE, sd_attr)
 820
 821         # By setting the session_info to admin_session_info and
 822         # setting the security.SECINFO_OWNER | security.SECINFO_GROUP
 823         # flags we cause the descriptor module to set the correct
 824         # owner and group on the SD, replacing the None/NULL values
 825         # for owner_sid and group_sid currently present.
 826         #
 827         # The admin_session_info matches that used in provision, and
 828         # is the best guess we can make for an existing object that
 829         # hasn't had something specifically set.
 830         #
 831         # This is important for the dns related naming contexts.
 832         self.samdb.set_session_info(self.admin_session_info)
 833         if self.do_modify(nmsg, ["sd_flags:1:%d" % sd_flags],
 834                           "Failed to fix metadata for attribute %s" % sd_attr):
 835             self.report("Fixed attribute '%s' of '%s'\n" % (sd_attr, dn))
 836         self.samdb.set_session_info(self.system_session_info)
 837
 838
 839     def has_replmetadata_zero_invocationid(self, dn, repl_meta_data):
 840         repl = ndr_unpack(drsblobs.replPropertyMetaDataBlob,
 841                           str(repl_meta_data))
 842         ctr = repl.ctr
 843         found = False
 844         for o in ctr.array:
 845             # Search for a zero invocationID
 846             if o.originating_invocation_id != misc.GUID("00000000-0000-0000-0000-000000000000"):
 847                 continue
 848
 849             found = True
 850             self.report('''ERROR: on replPropertyMetaData of %s, the instanceType on attribute 0x%08x,
 851                            version %d changed at %s is 00000000-0000-0000-0000-000000000000,
 852                            but should be non-zero.  Proposed fix is to set to our invocationID (%s).'''
 853                         % (dn, o.attid, o.version,
 854                            time.ctime(samba.nttime2unix(o.originating_change_time)),
 855                            self.samdb.get_invocation_id()))
 856
 857         return found
 858
 859
 860     def err_replmetadata_zero_invocationid(self, dn, attr, repl_meta_data):
 861         repl = ndr_unpack(drsblobs.replPropertyMetaDataBlob,
 862                           str(repl_meta_data))
 863         ctr = repl.ctr
 864         now = samba.unix2nttime(int(time.time()))
 865         found = False
 866         for o in ctr.array:
 867             # Search for a zero invocationID
 868             if o.originating_invocation_id != misc.GUID("00000000-0000-0000-0000-000000000000"):
 869                 continue
 870
 871             found = True
 872             seq = self.samdb.sequence_number(ldb.SEQ_NEXT)
 873             o.version = o.version + 1
 874             o.originating_change_time = now
 875             o.originating_invocation_id = misc.GUID(self.samdb.get_invocation_id())
 876             o.originating_usn = seq
 877             o.local_usn = seq
 878
 879         if found:
 880             replBlob = ndr_pack(repl)
 881             msg = ldb.Message()
 882             msg.dn = dn
 883
 884             if not self.confirm_all('Fix %s on %s by setting originating_invocation_id on some elements to our invocationID %s?'
 885                                     % (attr, dn, self.samdb.get_invocation_id()), 'fix_replmetadata_zero_invocationid'):
 886                 self.report('Not fixing %s on %s\n' % (attr, dn))
 887                 return
 888
 889             nmsg = ldb.Message()
 890             nmsg.dn = dn
 891             nmsg[attr] = ldb.MessageElement(replBlob, ldb.FLAG_MOD_REPLACE, attr)
 892             if self.do_modify(nmsg, ["local_oid:1.3.6.1.4.1.7165.4.3.14:0"],
 893                               "Failed to fix attribute %s" % attr):
 894                 self.report("Fixed attribute '%s' of '%s'\n" % (attr, dn))
 895
 896
 897     def is_deleted_deleted_objects(self, obj):
 898         faulty = False
 899         if "description" not in obj:
 900             self.report("ERROR: description not present on Deleted Objects container %s" % obj.dn)
 901             faulty = True
 902         if "showInAdvancedViewOnly" not in obj:
 903             self.report("ERROR: showInAdvancedViewOnly not present on Deleted Objects container %s" % obj.dn)
 904             faulty = True
 905         if "objectCategory" not in obj:
 906             self.report("ERROR: objectCategory not present on Deleted Objects container %s" % obj.dn)
 907             faulty = True
 908         if "isCriticalSystemObject" not in obj:
 909             self.report("ERROR: isCriticalSystemObject not present on Deleted Objects container %s" % obj.dn)
 910             faulty = True
 911         if "isRecycled" in obj:
 912             self.report("ERROR: isRecycled present on Deleted Objects container %s" % obj.dn)
 913             faulty = True
 914         return faulty
 915
 916
 917     def err_deleted_deleted_objects(self, obj):
 918         nmsg = ldb.Message()
 919         nmsg.dn = dn = obj.dn
 920
 921         if "description" not in obj:
 922             nmsg["description"] = ldb.MessageElement("Container for deleted objects", ldb.FLAG_MOD_REPLACE, "description")
 923         if "showInAdvancedViewOnly" not in obj:
 924             nmsg["showInAdvancedViewOnly"] = ldb.MessageElement("TRUE", ldb.FLAG_MOD_REPLACE, "showInAdvancedViewOnly")
 925         if "objectCategory" not in obj:
 926             nmsg["objectCategory"] = ldb.MessageElement("CN=Container,%s" % self.schema_dn, ldb.FLAG_MOD_REPLACE, "objectCategory")
 927         if "isCriticalSystemObject" not in obj:
 928             nmsg["isCriticalSystemObject"] = ldb.MessageElement("TRUE", ldb.FLAG_MOD_REPLACE, "isCriticalSystemObject")
 929         if "isRecycled" in obj:
 930             nmsg["isRecycled"] = ldb.MessageElement("TRUE", ldb.FLAG_MOD_DELETE, "isRecycled")
 931
 932         if not self.confirm_all('Fix Deleted Objects container %s by restoring default attributes?'
 933                                 % (dn), 'fix_deleted_deleted_objects'):
 934             self.report('Not fixing missing/incorrect attributes on %s\n' % (dn))
 935             return
 936
 937         if self.do_modify(nmsg, ["relax:0"],
 938                           "Failed to fix Deleted Objects container  %s" % dn):
 939             self.report("Fixed Deleted Objects container '%s'\n" % (dn))
 940
 941
 942     def is_fsmo_role(self, dn):
 943         if dn == self.samdb.domain_dn:
 944             return True
 945         if dn == self.infrastructure_dn:
 946             return True
 947         if dn == self.naming_dn:
 948             return True
 949         if dn == self.schema_dn:
 950             return True
 951         if dn == self.rid_dn:
 952             return True
 953
 954         return False
 955
 956     def calculate_instancetype(self, dn):
 957         instancetype = 0
 958         nc_root = self.samdb.get_nc_root(dn)
 959         if dn == nc_root:
 960             instancetype |= dsdb.INSTANCE_TYPE_IS_NC_HEAD
 961             try:
 962                 self.samdb.search(base=dn.parent(), scope=ldb.SCOPE_BASE, attrs=[], controls=["show_recycled:1"])
 963             except ldb.LdbError, (enum, estr):
 964                 if enum != ldb.ERR_NO_SUCH_OBJECT:
 965                     raise
 966             else:
 967                 instancetype |= dsdb.INSTANCE_TYPE_NC_ABOVE
 968
 969         if self.write_ncs is not None and str(nc_root) in self.write_ncs:
 970             instancetype |= dsdb.INSTANCE_TYPE_WRITE
 971
 972         return instancetype
 973
 974     def get_wellknown_sd(self, dn):
 975         for [sd_dn, descriptor_fn] in self.wellknown_sds:
 976             if dn == sd_dn:
 977                 domain_sid = security.dom_sid(self.samdb.get_domain_sid())
 978                 return ndr_unpack(security.descriptor,
 979                                   descriptor_fn(domain_sid,
 980                                                 name_map=self.name_map))
 981
 982         raise KeyError
 983
 984     def check_object(self, dn, attrs=['*']):
 985         '''check one object'''
 986         if self.verbose:
 987             self.report("Checking object %s" % dn)
 988         if '*' in attrs:
 989             attrs.append("replPropertyMetaData")
 990
 991         try:
 992             sd_flags = 0
 993             sd_flags |= security.SECINFO_OWNER
 994             sd_flags |= security.SECINFO_GROUP
 995             sd_flags |= security.SECINFO_DACL
 996             sd_flags |= security.SECINFO_SACL
 997
 998             res = self.samdb.search(base=dn, scope=ldb.SCOPE_BASE,
 999                                     controls=[
1000                                         "extended_dn:1:1",
1001                                         "show_recycled:1",
1002                                         "show_deleted:1",
1003                                         "sd_flags:1:%d" % sd_flags,
1004                                     ],
1005                                     attrs=attrs)
1006         except ldb.LdbError, (enum, estr):
1007             if enum == ldb.ERR_NO_SUCH_OBJECT:
1008                 if self.in_transaction:
1009                     self.report("ERROR: Object %s disappeared during check" % dn)
1010                     return 1
1011                 return 0
1012             raise
1013         if len(res) != 1:
1014             self.report("ERROR: Object %s failed to load during check" % dn)
1015             return 1
1016         obj = res[0]
1017         error_count = 0
1018         list_attrs_from_md = []
1019         list_attrs_seen = []
1020         got_repl_property_meta_data = False
1021
1022         for attrname in obj:
1023             if attrname == 'dn':
1024                 continue
1025
1026             if str(attrname).lower() == 'replpropertymetadata':
1027                 if self.has_replmetadata_zero_invocationid(dn, obj[attrname]):
1028                     error_count += 1
1029                     self.err_replmetadata_zero_invocationid(dn, attrname, obj[attrname])
1030                     # We don't continue, as we may also have other fixes for this attribute
1031                     # based on what other attributes we see.
1032
1033                 list_attrs_from_md = self.process_metadata(obj[attrname])
1034                 got_repl_property_meta_data = True
1035                 continue
1036
1037             if str(attrname).lower() == 'ntsecuritydescriptor':
1038                 (sd, sd_broken) = self.process_sd(dn, obj)
1039                 if sd_broken is not None:
1040                     self.err_wrong_sd(dn, sd, sd_broken)
1041                     error_count += 1
1042                     continue
1043
1044                 if sd.owner_sid is None or sd.group_sid is None:
1045                     self.err_missing_sd_owner(dn, sd)
1046                     error_count += 1
1047                     continue
1048
1049                 if self.reset_well_known_acls:
1050                     try:
1051                         well_known_sd = self.get_wellknown_sd(dn)
1052                     except KeyError:
1053                         continue
1054
1055                     current_sd = ndr_unpack(security.descriptor,
1056                                             str(obj[attrname][0]))
1057
1058                     diff = get_diff_sds(well_known_sd, current_sd, security.dom_sid(self.samdb.get_domain_sid()))
1059                     if diff != "":
1060                         self.err_wrong_default_sd(dn, well_known_sd, current_sd, diff)
1061                         error_count += 1
1062                         continue
1063                 continue
1064
1065             if str(attrname).lower() == 'objectclass':
1066                 normalised = self.samdb.dsdb_normalise_attributes(self.samdb_schema, attrname, list(obj[attrname]))
1067                 if list(normalised) != list(obj[attrname]):
1068                     self.err_normalise_mismatch_replace(dn, attrname, list(obj[attrname]))
1069                     error_count += 1
1070                 continue
1071
1072             # check for empty attributes
1073             for val in obj[attrname]:
1074                 if val == '':
1075                     self.err_empty_attribute(dn, attrname)
1076                     error_count += 1
1077                     continue
1078
1079             # get the syntax oid for the attribute, so we can can have
1080             # special handling for some specific attribute types
1081             try:
1082                 syntax_oid = self.samdb_schema.get_syntax_oid_from_lDAPDisplayName(attrname)
1083             except Exception, msg:
1084                 self.err_unknown_attribute(obj, attrname)
1085                 error_count += 1
1086                 continue
1087
1088             flag = self.samdb_schema.get_systemFlags_from_lDAPDisplayName(attrname)
1089             if (not flag & dsdb.DS_FLAG_ATTR_NOT_REPLICATED
1090                 and not flag & dsdb.DS_FLAG_ATTR_IS_CONSTRUCTED
1091                 and not self.samdb_schema.get_linkId_from_lDAPDisplayName(attrname)):
1092                 list_attrs_seen.append(str(attrname).lower())
1093
1094             if syntax_oid in [ dsdb.DSDB_SYNTAX_BINARY_DN, dsdb.DSDB_SYNTAX_OR_NAME,
1095                                dsdb.DSDB_SYNTAX_STRING_DN, ldb.SYNTAX_DN ]:
1096                 # it's some form of DN, do specialised checking on those
1097                 error_count += self.check_dn(obj, attrname, syntax_oid)
1098
1099             # check for incorrectly normalised attributes
1100             for val in obj[attrname]:
1101                 normalised = self.samdb.dsdb_normalise_attributes(self.samdb_schema, attrname, [val])
1102                 if len(normalised) != 1 or normalised[0] != val:
1103                     self.err_normalise_mismatch(dn, attrname, obj[attrname])
1104                     error_count += 1
1105                     break
1106
1107             if str(attrname).lower() == "instancetype":
1108                 calculated_instancetype = self.calculate_instancetype(dn)
1109                 if len(obj["instanceType"]) != 1 or obj["instanceType"][0] != str(calculated_instancetype):
1110                     error_count += 1
1111                     self.err_wrong_instancetype(obj, calculated_instancetype)
1112
1113         show_dn = True
1114         if got_repl_property_meta_data:
1115             rdn = (str(dn).split(","))[0]
1116             if rdn == "CN=Deleted Objects":
1117                 isDeletedAttId = 131120
1118                 # It's 29/12/9999 at 23:59:59 UTC as specified in MS-ADTS 7.1.1.4.2 Deleted Objects Container
1119
1120                 expectedTimeDo = 2650466015990000000
1121                 originating = self.get_originating_time(obj["replPropertyMetaData"], isDeletedAttId)
1122                 if originating != expectedTimeDo:
1123                     if self.confirm_all("Fix isDeleted originating_change_time on '%s'" % str(dn), 'fix_time_metadata'):
1124                         nmsg = ldb.Message()
1125                         nmsg.dn = dn
1126                         nmsg["isDeleted"] = ldb.MessageElement("TRUE", ldb.FLAG_MOD_REPLACE, "isDeleted")
1127                         error_count += 1
1128                         self.samdb.modify(nmsg, controls=["provision:0"])
1129
1130                     else:
1131                         self.report("Not fixing isDeleted originating_change_time on '%s'" % str(dn))
1132             for att in list_attrs_seen:
1133                 if not att in list_attrs_from_md:
1134                     if show_dn:
1135                         self.report("On object %s" % dn)
1136                         show_dn = False
1137                     error_count += 1
1138                     self.report("ERROR: Attribute %s not present in replication metadata" % att)
1139                     if not self.confirm_all("Fix missing replPropertyMetaData element '%s'" % att, 'fix_all_metadata'):
1140                         self.report("Not fixing missing replPropertyMetaData element '%s'" % att)
1141                         continue
1142                     self.fix_metadata(dn, att)
1143
1144         if self.is_fsmo_role(dn):
1145             if "fSMORoleOwner" not in obj:
1146                 self.err_no_fsmoRoleOwner(obj)
1147                 error_count += 1
1148
1149         try:
1150             if dn != self.samdb.get_root_basedn():
1151                 res = self.samdb.search(base=dn.parent(), scope=ldb.SCOPE_BASE,
1152                                         controls=["show_recycled:1", "show_deleted:1"])
1153         except ldb.LdbError, (enum, estr):
1154             if enum == ldb.ERR_NO_SUCH_OBJECT:
1155                 self.err_missing_parent(obj)
1156                 error_count += 1
1157             else:
1158                 raise
1159
1160         if dn in self.deleted_objects_containers and '*' in attrs:
1161             if self.is_deleted_deleted_objects(obj):
1162                 self.err_deleted_deleted_objects(obj)
1163                 error_count += 1
1164
1165         return error_count
1166
1167     ################################################################
1168     # check special @ROOTDSE attributes
1169     def check_rootdse(self):
1170         '''check the @ROOTDSE special object'''
1171         dn = ldb.Dn(self.samdb, '@ROOTDSE')
1172         if self.verbose:
1173             self.report("Checking object %s" % dn)
1174         res = self.samdb.search(base=dn, scope=ldb.SCOPE_BASE)
1175         if len(res) != 1:
1176             self.report("Object %s disappeared during check" % dn)
1177             return 1
1178         obj = res[0]
1179         error_count = 0
1180
1181         # check that the dsServiceName is in GUID form
1182         if not 'dsServiceName' in obj:
1183             self.report('ERROR: dsServiceName missing in @ROOTDSE')
1184             return error_count+1
1185
1186         if not obj['dsServiceName'][0].startswith('<GUID='):
1187             self.report('ERROR: dsServiceName not in GUID form in @ROOTDSE')
1188             error_count += 1
1189             if not self.confirm('Change dsServiceName to GUID form?'):
1190                 return error_count
1191             res = self.samdb.search(base=ldb.Dn(self.samdb, obj['dsServiceName'][0]),
1192                                     scope=ldb.SCOPE_BASE, attrs=['objectGUID'])
1193             guid_str = str(ndr_unpack(misc.GUID, res[0]['objectGUID'][0]))
1194             m = ldb.Message()
1195             m.dn = dn
1196             m['dsServiceName'] = ldb.MessageElement("<GUID=%s>" % guid_str,
1197                                                     ldb.FLAG_MOD_REPLACE, 'dsServiceName')
1198             if self.do_modify(m, [], "Failed to change dsServiceName to GUID form", validate=False):
1199                 self.report("Changed dsServiceName to GUID form")
1200         return error_count
1201
1202
1203     ###############################################
1204     # re-index the database
1205     def reindex_database(self):
1206         '''re-index the whole database'''
1207         m = ldb.Message()
1208         m.dn = ldb.Dn(self.samdb, "@ATTRIBUTES")
1209         m['add']    = ldb.MessageElement('NONE', ldb.FLAG_MOD_ADD, 'force_reindex')
1210         m['delete'] = ldb.MessageElement('NONE', ldb.FLAG_MOD_DELETE, 'force_reindex')
1211         return self.do_modify(m, [], 're-indexed database', validate=False)
1212
1213     ###############################################
1214     # reset @MODULES
1215     def reset_modules(self):
1216         '''reset @MODULES to that needed for current sam.ldb (to read a very old database)'''
1217         m = ldb.Message()
1218         m.dn = ldb.Dn(self.samdb, "@MODULES")
1219         m['@LIST'] = ldb.MessageElement('samba_dsdb', ldb.FLAG_MOD_REPLACE, '@LIST')
1220         return self.do_modify(m, [], 'reset @MODULES on database', validate=False)