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 from samba import dsdb
  22 from samba import common
  23 from samba.dcerpc import misc
  24 from samba.ndr import ndr_unpack, ndr_pack
  25 from samba.dcerpc import drsblobs
  26 from samba.common import dsdb_Dn
  27 from samba.dcerpc import security
  28 from samba.descriptor import get_wellknown_sds, get_diff_sds
  29 from samba.auth import system_session, admin_session
  30
  31
  32 class dbcheck(object):
  33     """check a SAM database for errors"""
  34
  35     def __init__(self, samdb, samdb_schema=None, verbose=False, fix=False,
  36                  yes=False, quiet=False, in_transaction=False,
  37                  reset_well_known_acls=False):
  38         self.samdb = samdb
  39         self.dict_oid_name = None
  40         self.samdb_schema = (samdb_schema or samdb)
  41         self.verbose = verbose
  42         self.fix = fix
  43         self.yes = yes
  44         self.quiet = quiet
  45         self.remove_all_unknown_attributes = False
  46         self.remove_all_empty_attributes = False
  47         self.fix_all_normalisation = False
  48         self.fix_all_DN_GUIDs = False
  49         self.fix_all_binary_dn = False
  50         self.remove_all_deleted_DN_links = False
  51         self.fix_all_target_mismatch = False
  52         self.fix_all_metadata = False
  53         self.fix_time_metadata = False
  54         self.fix_all_missing_backlinks = False
  55         self.fix_all_orphaned_backlinks = False
  56         self.fix_rmd_flags = False
  57         self.fix_ntsecuritydescriptor = False
  58         self.fix_ntsecuritydescriptor_owner_group = False
  59         self.seize_fsmo_role = False
  60         self.move_to_lost_and_found = False
  61         self.fix_instancetype = False
  62         self.reset_well_known_acls = reset_well_known_acls
  63         self.reset_all_well_known_acls = False
  64         self.in_transaction = in_transaction
  65         self.infrastructure_dn = ldb.Dn(samdb, "CN=Infrastructure," + samdb.domain_dn())
  66         self.naming_dn = ldb.Dn(samdb, "CN=Partitions,%s" % samdb.get_config_basedn())
  67         self.schema_dn = samdb.get_schema_basedn()
  68         self.rid_dn = ldb.Dn(samdb, "CN=RID Manager$,CN=System," + samdb.domain_dn())
  69         self.ntds_dsa = ldb.Dn(samdb, samdb.get_dsServiceName())
  70         self.class_schemaIDGUID = {}
  71         self.wellknown_sds = get_wellknown_sds(self.samdb)
  72
  73         self.name_map = {}
  74         try:
  75             res = samdb.search(base="CN=DnsAdmins,CN=Users,%s" % samdb.domain_dn(), scope=ldb.SCOPE_BASE,
  76                            attrs=["objectSid"])
  77             dnsadmins_sid = ndr_unpack(security.dom_sid, res[0]["objectSid"][0])
  78             self.name_map['DnsAdmins'] = str(dnsadmins_sid)
  79         except ldb.LdbError, (enum, estr):
  80             if enum != ldb.ERR_NO_SUCH_OBJECT:
  81                 raise
  82             pass
  83
  84         self.system_session_info = system_session()
  85         self.admin_session_info = admin_session(None, samdb.get_domain_sid())
  86
  87         res = self.samdb.search(base=self.ntds_dsa, scope=ldb.SCOPE_BASE, attrs=['msDS-hasMasterNCs', 'hasMasterNCs'])
  88         if "msDS-hasMasterNCs" in res[0]:
  89             self.write_ncs = res[0]["msDS-hasMasterNCs"]
  90         else:
  91             # If the Forest Level is less than 2003 then there is no
  92             # msDS-hasMasterNCs, so we fall back to hasMasterNCs
  93             # no need to merge as all the NCs that are in hasMasterNCs must
  94             # also be in msDS-hasMasterNCs (but not the opposite)
  95             if "hasMasterNCs" in res[0]:
  96                 self.write_ncs = res[0]["hasMasterNCs"]
  97             else:
  98                 self.write_ncs = None
  99
 100
 101     def check_database(self, DN=None, scope=ldb.SCOPE_SUBTREE, controls=[], attrs=['*']):
 102         '''perform a database check, returning the number of errors found'''
 103
 104         res = self.samdb.search(base=DN, scope=scope, attrs=['dn'], controls=controls)
 105         self.report('Checking %u objects' % len(res))
 106         error_count = 0
 107
 108         for object in res:
 109             error_count += self.check_object(object.dn, attrs=attrs)
 110
 111         if DN is None:
 112             error_count += self.check_rootdse()
 113
 114         if error_count != 0 and not self.fix:
 115             self.report("Please use --fix to fix these errors")
 116
 117         self.report('Checked %u objects (%u errors)' % (len(res), error_count))
 118         return error_count
 119
 120     def report(self, msg):
 121         '''print a message unless quiet is set'''
 122         if not self.quiet:
 123             print(msg)
 124
 125     def confirm(self, msg, allow_all=False, forced=False):
 126         '''confirm a change'''
 127         if not self.fix:
 128             return False
 129         if self.quiet:
 130             return self.yes
 131         if self.yes:
 132             forced = True
 133         return common.confirm(msg, forced=forced, allow_all=allow_all)
 134
 135     ################################################################
 136     # a local confirm function with support for 'all'
 137     def confirm_all(self, msg, all_attr):
 138         '''confirm a change with support for "all" '''
 139         if not self.fix:
 140             return False
 141         if self.quiet:
 142             return self.yes
 143         if getattr(self, all_attr) == 'NONE':
 144             return False
 145         if getattr(self, all_attr) == 'ALL':
 146             forced = True
 147         else:
 148             forced = self.yes
 149         c = common.confirm(msg, forced=forced, allow_all=True)
 150         if c == 'ALL':
 151             setattr(self, all_attr, 'ALL')
 152             return True
 153         if c == 'NONE':
 154             setattr(self, all_attr, 'NONE')
 155             return False
 156         return c
 157
 158     def do_modify(self, m, controls, msg, validate=True):
 159         '''perform a modify with optional verbose output'''
 160         if self.verbose:
 161             self.report(self.samdb.write_ldif(m, ldb.CHANGETYPE_MODIFY))
 162         try:
 163             controls = controls + ["local_oid:%s:0" % dsdb.DSDB_CONTROL_DBCHECK]
 164             self.samdb.modify(m, controls=controls, validate=validate)
 165         except Exception, err:
 166             self.report("%s : %s" % (msg, err))
 167             return False
 168         return True
 169
 170     def do_rename(self, from_dn, to_rdn, to_base, controls, msg):
 171         '''perform a modify with optional verbose output'''
 172         if self.verbose:
 173             self.report("""dn: %s
 174 changeType: modrdn
 175 newrdn: %s
 176 deleteOldRdn: 1
 177 newSuperior: %s""" % (str(from_dn), str(to_rdn), str(to_base)))
 178         try:
 179             to_dn = to_rdn + to_base
 180             controls = controls + ["local_oid:%s:0" % dsdb.DSDB_CONTROL_DBCHECK]
 181             self.samdb.rename(from_dn, to_dn, controls=controls)
 182         except Exception, err:
 183             self.report("%s : %s" % (msg, err))
 184             return False
 185         return True
 186
 187     def err_empty_attribute(self, dn, attrname):
 188         '''fix empty attributes'''
 189         self.report("ERROR: Empty attribute %s in %s" % (attrname, dn))
 190         if not self.confirm_all('Remove empty attribute %s from %s?' % (attrname, dn), 'remove_all_empty_attributes'):
 191             self.report("Not fixing empty attribute %s" % attrname)
 192             return
 193
 194         m = ldb.Message()
 195         m.dn = dn
 196         m[attrname] = ldb.MessageElement('', ldb.FLAG_MOD_DELETE, attrname)
 197         if self.do_modify(m, ["relax:0", "show_recycled:1"],
 198                           "Failed to remove empty attribute %s" % attrname, validate=False):
 199             self.report("Removed empty attribute %s" % attrname)
 200
 201     def err_normalise_mismatch(self, dn, attrname, values):
 202         '''fix attribute normalisation errors'''
 203         self.report("ERROR: Normalisation error for attribute %s in %s" % (attrname, dn))
 204         mod_list = []
 205         for val in values:
 206             normalised = self.samdb.dsdb_normalise_attributes(
 207                 self.samdb_schema, attrname, [val])
 208             if len(normalised) != 1:
 209                 self.report("Unable to normalise value '%s'" % val)
 210                 mod_list.append((val, ''))
 211             elif (normalised[0] != val):
 212                 self.report("value '%s' should be '%s'" % (val, normalised[0]))
 213                 mod_list.append((val, normalised[0]))
 214         if not self.confirm_all('Fix normalisation for %s from %s?' % (attrname, dn), 'fix_all_normalisation'):
 215             self.report("Not fixing attribute %s" % attrname)
 216             return
 217
 218         m = ldb.Message()
 219         m.dn = dn
 220         for i in range(0, len(mod_list)):
 221             (val, nval) = mod_list[i]
 222             m['value_%u' % i] = ldb.MessageElement(val, ldb.FLAG_MOD_DELETE, attrname)
 223             if nval != '':
 224                 m['normv_%u' % i] = ldb.MessageElement(nval, ldb.FLAG_MOD_ADD,
 225                     attrname)
 226
 227         if self.do_modify(m, ["relax:0", "show_recycled:1"],
 228                           "Failed to normalise attribute %s" % attrname,
 229                           validate=False):
 230             self.report("Normalised attribute %s" % attrname)
 231
 232     def err_normalise_mismatch_replace(self, dn, attrname, values):
 233         '''fix attribute normalisation errors'''
 234         normalised = self.samdb.dsdb_normalise_attributes(self.samdb_schema, attrname, values)
 235         self.report("ERROR: Normalisation error for attribute '%s' in '%s'" % (attrname, dn))
 236         self.report("Values/Order of values do/does not match: %s/%s!" % (values, list(normalised)))
 237         if list(normalised) == values:
 238             return
 239         if not self.confirm_all("Fix normalisation for '%s' from '%s'?" % (attrname, dn), 'fix_all_normalisation'):
 240             self.report("Not fixing attribute '%s'" % attrname)
 241             return
 242
 243         m = ldb.Message()
 244         m.dn = dn
 245         m[attrname] = ldb.MessageElement(normalised, ldb.FLAG_MOD_REPLACE, attrname)
 246
 247         if self.do_modify(m, ["relax:0", "show_recycled:1"],
 248                           "Failed to normalise attribute %s" % attrname,
 249                           validate=False):
 250             self.report("Normalised attribute %s" % attrname)
 251
 252     def is_deleted_objects_dn(self, dsdb_dn):
 253         '''see if a dsdb_Dn is the special Deleted Objects DN'''
 254         return dsdb_dn.prefix == "B:32:18E2EA80684F11D2B9AA00C04F79F805:"
 255
 256     def err_deleted_dn(self, dn, attrname, val, dsdb_dn, correct_dn):
 257         """handle a DN pointing to a deleted object"""
 258         self.report("ERROR: target DN is deleted for %s in object %s - %s" % (attrname, dn, val))
 259         self.report("Target GUID points at deleted DN %s" % correct_dn)
 260         if not self.confirm_all('Remove DN link?', 'remove_all_deleted_DN_links'):
 261             self.report("Not removing")
 262             return
 263         m = ldb.Message()
 264         m.dn = dn
 265         m['old_value'] = ldb.MessageElement(val, ldb.FLAG_MOD_DELETE, attrname)
 266         if self.do_modify(m, ["show_recycled:1", "local_oid:%s:0" % dsdb.DSDB_CONTROL_DBCHECK],
 267                           "Failed to remove deleted DN attribute %s" % attrname):
 268             self.report("Removed deleted DN on attribute %s" % attrname)
 269
 270     def err_missing_dn_GUID(self, dn, attrname, val, dsdb_dn):
 271         """handle a missing target DN (both GUID and DN string form are missing)"""
 272         # check if its a backlink
 273         linkID = self.samdb_schema.get_linkId_from_lDAPDisplayName(attrname)
 274         if (linkID & 1 == 0) and str(dsdb_dn).find('DEL\\0A') == -1:
 275             self.report("Not removing dangling forward link")
 276             return
 277         self.err_deleted_dn(dn, attrname, val, dsdb_dn, dsdb_dn)
 278
 279     def err_incorrect_dn_GUID(self, dn, attrname, val, dsdb_dn, errstr):
 280         """handle a missing GUID extended DN component"""
 281         self.report("ERROR: %s component for %s in object %s - %s" % (errstr, attrname, dn, val))
 282         controls=["extended_dn:1:1", "show_recycled:1"]
 283         try:
 284             res = self.samdb.search(base=str(dsdb_dn.dn), scope=ldb.SCOPE_BASE,
 285                                     attrs=[], controls=controls)
 286         except ldb.LdbError, (enum, estr):
 287             self.report("unable to find object for DN %s - (%s)" % (dsdb_dn.dn, estr))
 288             self.err_missing_dn_GUID(dn, attrname, val, dsdb_dn)
 289             return
 290         if len(res) == 0:
 291             self.report("unable to find object for DN %s" % dsdb_dn.dn)
 292             self.err_missing_dn_GUID(dn, attrname, val, dsdb_dn)
 293             return
 294         dsdb_dn.dn = res[0].dn
 295
 296         if not self.confirm_all('Change DN to %s?' % str(dsdb_dn), 'fix_all_DN_GUIDs'):
 297             self.report("Not fixing %s" % errstr)
 298             return
 299         m = ldb.Message()
 300         m.dn = dn
 301         m['old_value'] = ldb.MessageElement(val, ldb.FLAG_MOD_DELETE, attrname)
 302         m['new_value'] = ldb.MessageElement(str(dsdb_dn), ldb.FLAG_MOD_ADD, attrname)
 303
 304         if self.do_modify(m, ["show_recycled:1"],
 305                           "Failed to fix %s on attribute %s" % (errstr, attrname)):
 306             self.report("Fixed %s on attribute %s" % (errstr, attrname))
 307
 308     def err_incorrect_binary_dn(self, dn, attrname, val, dsdb_dn, errstr):
 309         """handle an incorrect binary DN component"""
 310         self.report("ERROR: %s binary component for %s in object %s - %s" % (errstr, attrname, dn, val))
 311         controls=["extended_dn:1:1", "show_recycled:1"]
 312
 313         if not self.confirm_all('Change DN to %s?' % str(dsdb_dn), 'fix_all_binary_dn'):
 314             self.report("Not fixing %s" % errstr)
 315             return
 316         m = ldb.Message()
 317         m.dn = dn
 318         m['old_value'] = ldb.MessageElement(val, ldb.FLAG_MOD_DELETE, attrname)
 319         m['new_value'] = ldb.MessageElement(str(dsdb_dn), ldb.FLAG_MOD_ADD, attrname)
 320
 321         if self.do_modify(m, ["show_recycled:1"],
 322                           "Failed to fix %s on attribute %s" % (errstr, attrname)):
 323             self.report("Fixed %s on attribute %s" % (errstr, attrname))
 324
 325     def err_dn_target_mismatch(self, dn, attrname, val, dsdb_dn, correct_dn, errstr):
 326         """handle a DN string being incorrect"""
 327         self.report("ERROR: incorrect DN string component for %s in object %s - %s" % (attrname, dn, val))
 328         dsdb_dn.dn = correct_dn
 329
 330         if not self.confirm_all('Change DN to %s?' % str(dsdb_dn), 'fix_all_target_mismatch'):
 331             self.report("Not fixing %s" % errstr)
 332             return
 333         m = ldb.Message()
 334         m.dn = dn
 335         m['old_value'] = ldb.MessageElement(val, ldb.FLAG_MOD_DELETE, attrname)
 336         m['new_value'] = ldb.MessageElement(str(dsdb_dn), ldb.FLAG_MOD_ADD, attrname)
 337         if self.do_modify(m, ["show_recycled:1"],
 338                           "Failed to fix incorrect DN string on attribute %s" % attrname):
 339             self.report("Fixed incorrect DN string on attribute %s" % (attrname))
 340
 341     def err_unknown_attribute(self, obj, attrname):
 342         '''handle an unknown attribute error'''
 343         self.report("ERROR: unknown attribute '%s' in %s" % (attrname, obj.dn))
 344         if not self.confirm_all('Remove unknown attribute %s' % attrname, 'remove_all_unknown_attributes'):
 345             self.report("Not removing %s" % attrname)
 346             return
 347         m = ldb.Message()
 348         m.dn = obj.dn
 349         m['old_value'] = ldb.MessageElement([], ldb.FLAG_MOD_DELETE, attrname)
 350         if self.do_modify(m, ["relax:0", "show_recycled:1"],
 351                           "Failed to remove unknown attribute %s" % attrname):
 352             self.report("Removed unknown attribute %s" % (attrname))
 353
 354     def err_missing_backlink(self, obj, attrname, val, backlink_name, target_dn):
 355         '''handle a missing backlink value'''
 356         self.report("ERROR: missing backlink attribute '%s' in %s for link %s in %s" % (backlink_name, target_dn, attrname, obj.dn))
 357         if not self.confirm_all('Fix missing backlink %s' % backlink_name, 'fix_all_missing_backlinks'):
 358             self.report("Not fixing missing backlink %s" % backlink_name)
 359             return
 360         m = ldb.Message()
 361         m.dn = obj.dn
 362         m['old_value'] = ldb.MessageElement(val, ldb.FLAG_MOD_DELETE, attrname)
 363         m['new_value'] = ldb.MessageElement(val, ldb.FLAG_MOD_ADD, attrname)
 364         if self.do_modify(m, ["show_recycled:1"],
 365                           "Failed to fix missing backlink %s" % backlink_name):
 366             self.report("Fixed missing backlink %s" % (backlink_name))
 367
 368     def err_incorrect_rmd_flags(self, obj, attrname, revealed_dn):
 369         '''handle a incorrect RMD_FLAGS value'''
 370         rmd_flags = int(revealed_dn.dn.get_extended_component("RMD_FLAGS"))
 371         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()))
 372         if not self.confirm_all('Fix incorrect RMD_FLAGS %u' % rmd_flags, 'fix_rmd_flags'):
 373             self.report("Not fixing incorrect RMD_FLAGS %u" % rmd_flags)
 374             return
 375         m = ldb.Message()
 376         m.dn = obj.dn
 377         m['old_value'] = ldb.MessageElement(str(revealed_dn), ldb.FLAG_MOD_DELETE, attrname)
 378         if self.do_modify(m, ["show_recycled:1", "reveal_internals:0", "show_deleted:0"],
 379                           "Failed to fix incorrect RMD_FLAGS %u" % rmd_flags):
 380             self.report("Fixed incorrect RMD_FLAGS %u" % (rmd_flags))
 381
 382     def err_orphaned_backlink(self, obj, attrname, val, link_name, target_dn):
 383         '''handle a orphaned backlink value'''
 384         self.report("ERROR: orphaned backlink attribute '%s' in %s for link %s in %s" % (attrname, obj.dn, link_name, target_dn))
 385         if not self.confirm_all('Remove orphaned backlink %s' % link_name, 'fix_all_orphaned_backlinks'):
 386             self.report("Not removing orphaned backlink %s" % link_name)
 387             return
 388         m = ldb.Message()
 389         m.dn = obj.dn
 390         m['value'] = ldb.MessageElement(val, ldb.FLAG_MOD_DELETE, attrname)
 391         if self.do_modify(m, ["show_recycled:1", "relax:0"],
 392                           "Failed to fix orphaned backlink %s" % link_name):
 393             self.report("Fixed orphaned backlink %s" % (link_name))
 394
 395     def err_no_fsmoRoleOwner(self, obj):
 396         '''handle a missing fSMORoleOwner'''
 397         self.report("ERROR: fSMORoleOwner not found for role %s" % (obj.dn))
 398         res = self.samdb.search("",
 399                                 scope=ldb.SCOPE_BASE, attrs=["dsServiceName"])
 400         assert len(res) == 1
 401         serviceName = res[0]["dsServiceName"][0]
 402         if not self.confirm_all('Sieze role %s onto current DC by adding fSMORoleOwner=%s' % (obj.dn, serviceName), 'seize_fsmo_role'):
 403             self.report("Not Siezing role %s onto current DC by adding fSMORoleOwner=%s" % (obj.dn, serviceName))
 404             return
 405         m = ldb.Message()
 406         m.dn = obj.dn
 407         m['value'] = ldb.MessageElement(serviceName, ldb.FLAG_MOD_ADD, 'fSMORoleOwner')
 408         if self.do_modify(m, [],
 409                           "Failed to sieze role %s onto current DC by adding fSMORoleOwner=%s" % (obj.dn, serviceName)):
 410             self.report("Siezed role %s onto current DC by adding fSMORoleOwner=%s" % (obj.dn, serviceName))
 411
 412     def err_missing_parent(self, obj):
 413         '''handle a missing parent'''
 414         self.report("ERROR: parent object not found for %s" % (obj.dn))
 415         if not self.confirm_all('Move object %s into LostAndFound?' % (obj.dn), 'move_to_lost_and_found'):
 416             self.report('Not moving object %s into LostAndFound' % (obj.dn))
 417             return
 418
 419         keep_transaction = True
 420         self.samdb.transaction_start()
 421         try:
 422             nc_root = self.samdb.get_nc_root(obj.dn);
 423             lost_and_found = self.samdb.get_wellknown_dn(nc_root, dsdb.DS_GUID_LOSTANDFOUND_CONTAINER)
 424             new_dn = ldb.Dn(self.samdb, str(obj.dn))
 425             new_dn.remove_base_components(len(new_dn) - 1)
 426             if self.do_rename(obj.dn, new_dn, lost_and_found, ["show_deleted:0", "relax:0"],
 427                               "Failed to rename object %s into lostAndFound at %s" % (obj.dn, new_dn + lost_and_found)):
 428                 self.report("Renamed object %s into lostAndFound at %s" % (obj.dn, new_dn + lost_and_found))
 429
 430                 m = ldb.Message()
 431                 m.dn = obj.dn
 432                 m['lastKnownParent'] = ldb.MessageElement(str(obj.dn.parent()), ldb.FLAG_MOD_REPLACE, 'lastKnownParent')
 433
 434                 if self.do_modify(m, [],
 435                                   "Failed to set lastKnownParent on lostAndFound object at %s" % (new_dn + lost_and_found)):
 436                     self.report("Set lastKnownParent on lostAndFound object at %s" % (new_dn + lost_and_found))
 437                     keep_transaction = True
 438         except:
 439             self.samdb.transaction_cancel()
 440             raise
 441
 442         if keep_transaction:
 443             self.samdb.transaction_commit()
 444         else:
 445             self.samdb.transaction_cancel()
 446
 447
 448     def err_wrong_instancetype(self, obj, calculated_instancetype):
 449         '''handle a wrong instanceType'''
 450         self.report("ERROR: wrong instanceType %s on %s, should be %d" % (obj["instanceType"], obj.dn, calculated_instancetype))
 451         if not self.confirm_all('Change instanceType from %s to %d on %s?' % (obj["instanceType"], calculated_instancetype, obj.dn), 'fix_instancetype'):
 452             self.report('Not changing instanceType from %s to %d on %s' % (obj["instanceType"], calculated_instancetype, obj.dn))
 453             return
 454
 455         m = ldb.Message()
 456         m.dn = obj.dn
 457         m['value'] = ldb.MessageElement(str(calculated_instancetype), ldb.FLAG_MOD_REPLACE, 'instanceType')
 458         if self.do_modify(m, ["local_oid:%s:0" % dsdb.DSDB_CONTROL_DBCHECK_MODIFY_RO_REPLICA],
 459                           "Failed to correct missing instanceType on %s by setting instanceType=%d" % (obj.dn, calculated_instancetype)):
 460             self.report("Corrected instancetype on %s by setting instanceType=%d" % (obj.dn, calculated_instancetype))
 461
 462     def find_revealed_link(self, dn, attrname, guid):
 463         '''return a revealed link in an object'''
 464         res = self.samdb.search(base=dn, scope=ldb.SCOPE_BASE, attrs=[attrname],
 465                                 controls=["show_deleted:0", "extended_dn:0", "reveal_internals:0"])
 466         syntax_oid = self.samdb_schema.get_syntax_oid_from_lDAPDisplayName(attrname)
 467         for val in res[0][attrname]:
 468             dsdb_dn = dsdb_Dn(self.samdb, val, syntax_oid)
 469             guid2 = dsdb_dn.dn.get_extended_component("GUID")
 470             if guid == guid2:
 471                 return dsdb_dn
 472         return None
 473
 474     def check_dn(self, obj, attrname, syntax_oid):
 475         '''check a DN attribute for correctness'''
 476         error_count = 0
 477         for val in obj[attrname]:
 478             dsdb_dn = dsdb_Dn(self.samdb, val, syntax_oid)
 479
 480             # all DNs should have a GUID component
 481             guid = dsdb_dn.dn.get_extended_component("GUID")
 482             if guid is None:
 483                 error_count += 1
 484                 self.err_incorrect_dn_GUID(obj.dn, attrname, val, dsdb_dn,
 485                     "missing GUID")
 486                 continue
 487
 488             guidstr = str(misc.GUID(guid))
 489
 490             attrs = ['isDeleted']
 491
 492             if (str(attrname).lower() == 'msds-hasinstantiatedncs') and (obj.dn == self.ntds_dsa):
 493                 fixing_msDS_HasInstantiatedNCs = True
 494                 attrs.append("instanceType")
 495             else:
 496                 fixing_msDS_HasInstantiatedNCs = False
 497
 498             linkID = self.samdb_schema.get_linkId_from_lDAPDisplayName(attrname)
 499             reverse_link_name = self.samdb_schema.get_backlink_from_lDAPDisplayName(attrname)
 500             if reverse_link_name is not None:
 501                 attrs.append(reverse_link_name)
 502
 503             # check its the right GUID
 504             try:
 505                 res = self.samdb.search(base="<GUID=%s>" % guidstr, scope=ldb.SCOPE_BASE,
 506                                         attrs=attrs, controls=["extended_dn:1:1", "show_recycled:1"])
 507             except ldb.LdbError, (enum, estr):
 508                 error_count += 1
 509                 self.err_incorrect_dn_GUID(obj.dn, attrname, val, dsdb_dn, "incorrect GUID")
 510                 continue
 511
 512             if fixing_msDS_HasInstantiatedNCs:
 513                 dsdb_dn.prefix = "B:8:%08X:" % int(res[0]['instanceType'][0])
 514                 dsdb_dn.binary = "%08X" % int(res[0]['instanceType'][0])
 515
 516                 if str(dsdb_dn) != val:
 517                     error_count +=1
 518                     self.err_incorrect_binary_dn(obj.dn, attrname, val, dsdb_dn, "incorrect instanceType part of Binary DN")
 519                     continue
 520
 521             # now we have two cases - the source object might or might not be deleted
 522             is_deleted = 'isDeleted' in obj and obj['isDeleted'][0].upper() == 'TRUE'
 523             target_is_deleted = 'isDeleted' in res[0] and res[0]['isDeleted'][0].upper() == 'TRUE'
 524
 525             # the target DN is not allowed to be deleted, unless the target DN is the
 526             # special Deleted Objects container
 527             if target_is_deleted and not is_deleted and not self.is_deleted_objects_dn(dsdb_dn):
 528                 error_count += 1
 529                 self.err_deleted_dn(obj.dn, attrname, val, dsdb_dn, res[0].dn)
 530                 continue
 531
 532             # check the DN matches in string form
 533             if res[0].dn.extended_str() != dsdb_dn.dn.extended_str():
 534                 error_count += 1
 535                 self.err_dn_target_mismatch(obj.dn, attrname, val, dsdb_dn,
 536                                             res[0].dn, "incorrect string version of DN")
 537                 continue
 538
 539             if is_deleted and not target_is_deleted and reverse_link_name is not None:
 540                 revealed_dn = self.find_revealed_link(obj.dn, attrname, guid)
 541                 rmd_flags = revealed_dn.dn.get_extended_component("RMD_FLAGS")
 542                 if rmd_flags is not None and (int(rmd_flags) & 1) == 0:
 543                     # the RMD_FLAGS for this link should be 1, as the target is deleted
 544                     self.err_incorrect_rmd_flags(obj, attrname, revealed_dn)
 545                     continue
 546
 547             # check the reverse_link is correct if there should be one
 548             if reverse_link_name is not None:
 549                 match_count = 0
 550                 if reverse_link_name in res[0]:
 551                     for v in res[0][reverse_link_name]:
 552                         if v == obj.dn.extended_str():
 553                             match_count += 1
 554                 if match_count != 1:
 555                     error_count += 1
 556                     if linkID & 1:
 557                         self.err_orphaned_backlink(obj, attrname, val, reverse_link_name, dsdb_dn.dn)
 558                     else:
 559                         self.err_missing_backlink(obj, attrname, val, reverse_link_name, dsdb_dn.dn)
 560                     continue
 561
 562         return error_count
 563
 564
 565     def get_originating_time(self, val, attid):
 566         '''Read metadata properties and return the originating time for
 567            a given attributeId.
 568
 569            :return: the originating time or 0 if not found
 570         '''
 571
 572         repl = ndr_unpack(drsblobs.replPropertyMetaDataBlob, str(val))
 573         obj = repl.ctr
 574
 575         for o in repl.ctr.array:
 576             if o.attid == attid:
 577                 return o.originating_change_time
 578
 579         return 0
 580
 581     def process_metadata(self, val):
 582         '''Read metadata properties and list attributes in it'''
 583
 584         list_att = []
 585
 586         repl = ndr_unpack(drsblobs.replPropertyMetaDataBlob, str(val))
 587         obj = repl.ctr
 588
 589         for o in repl.ctr.array:
 590             att = self.samdb_schema.get_lDAPDisplayName_by_attid(o.attid)
 591             list_att.append(att.lower())
 592
 593         return list_att
 594
 595
 596     def fix_metadata(self, dn, attr):
 597         '''re-write replPropertyMetaData elements for a single attribute for a
 598         object. This is used to fix missing replPropertyMetaData elements'''
 599         res = self.samdb.search(base = dn, scope=ldb.SCOPE_BASE, attrs = [attr],
 600                                 controls = ["search_options:1:2", "show_recycled:1"])
 601         msg = res[0]
 602         nmsg = ldb.Message()
 603         nmsg.dn = dn
 604         nmsg[attr] = ldb.MessageElement(msg[attr], ldb.FLAG_MOD_REPLACE, attr)
 605         if self.do_modify(nmsg, ["relax:0", "provision:0", "show_recycled:1"],
 606                           "Failed to fix metadata for attribute %s" % attr):
 607             self.report("Fixed metadata for attribute %s" % attr)
 608
 609     def ace_get_effective_inherited_type(self, ace):
 610         if ace.flags & security.SEC_ACE_FLAG_INHERIT_ONLY:
 611             return None
 612
 613         check = False
 614         if ace.type == security.SEC_ACE_TYPE_ACCESS_ALLOWED_OBJECT:
 615             check = True
 616         elif ace.type == security.SEC_ACE_TYPE_ACCESS_DENIED_OBJECT:
 617             check = True
 618         elif ace.type == security.SEC_ACE_TYPE_SYSTEM_AUDIT_OBJECT:
 619             check = True
 620         elif ace.type == security.SEC_ACE_TYPE_SYSTEM_ALARM_OBJECT:
 621             check = True
 622
 623         if not check:
 624             return None
 625
 626         if not ace.object.flags & security.SEC_ACE_INHERITED_OBJECT_TYPE_PRESENT:
 627             return None
 628
 629         return str(ace.object.inherited_type)
 630
 631     def lookup_class_schemaIDGUID(self, cls):
 632         if cls in self.class_schemaIDGUID:
 633             return self.class_schemaIDGUID[cls]
 634
 635         flt = "(&(ldapDisplayName=%s)(objectClass=classSchema))" % cls
 636         res = self.samdb.search(base=self.schema_dn,
 637                                 expression=flt,
 638                                 attrs=["schemaIDGUID"])
 639         t = str(ndr_unpack(misc.GUID, res[0]["schemaIDGUID"][0]))
 640
 641         self.class_schemaIDGUID[cls] = t
 642         return t
 643
 644     def process_sd(self, dn, obj):
 645         sd_attr = "nTSecurityDescriptor"
 646         sd_val = obj[sd_attr]
 647
 648         sd = ndr_unpack(security.descriptor, str(sd_val))
 649
 650         is_deleted = 'isDeleted' in obj and obj['isDeleted'][0].upper() == 'TRUE'
 651         if is_deleted:
 652             # we don't fix deleted objects
 653             return (sd, None)
 654
 655         sd_clean = security.descriptor()
 656         sd_clean.owner_sid = sd.owner_sid
 657         sd_clean.group_sid = sd.group_sid
 658         sd_clean.type = sd.type
 659         sd_clean.revision = sd.revision
 660
 661         broken = False
 662         last_inherited_type = None
 663
 664         aces = []
 665         if sd.sacl is not None:
 666             aces = sd.sacl.aces
 667         for i in range(0, len(aces)):
 668             ace = aces[i]
 669
 670             if not ace.flags & security.SEC_ACE_FLAG_INHERITED_ACE:
 671                 sd_clean.sacl_add(ace)
 672                 continue
 673
 674             t = self.ace_get_effective_inherited_type(ace)
 675             if t is None:
 676                 continue
 677
 678             if last_inherited_type is not None:
 679                 if t != last_inherited_type:
 680                     # if it inherited from more than
 681                     # one type it's very likely to be broken
 682                     #
 683                     # If not the recalculation will calculate
 684                     # the same result.
 685                     broken = True
 686                 continue
 687
 688             last_inherited_type = t
 689
 690         aces = []
 691         if sd.dacl is not None:
 692             aces = sd.dacl.aces
 693         for i in range(0, len(aces)):
 694             ace = aces[i]
 695
 696             if not ace.flags & security.SEC_ACE_FLAG_INHERITED_ACE:
 697                 sd_clean.dacl_add(ace)
 698                 continue
 699
 700             t = self.ace_get_effective_inherited_type(ace)
 701             if t is None:
 702                 continue
 703
 704             if last_inherited_type is not None:
 705                 if t != last_inherited_type:
 706                     # if it inherited from more than
 707                     # one type it's very likely to be broken
 708                     #
 709                     # If not the recalculation will calculate
 710                     # the same result.
 711                     broken = True
 712                 continue
 713
 714             last_inherited_type = t
 715
 716         if broken:
 717             return (sd_clean, sd)
 718
 719         if last_inherited_type is None:
 720             # ok
 721             return (sd, None)
 722
 723         cls = None
 724         try:
 725             cls = obj["objectClass"][-1]
 726         except KeyError, e:
 727             pass
 728
 729         if cls is None:
 730             res = self.samdb.search(base=dn, scope=ldb.SCOPE_BASE,
 731                                     attrs=["isDeleted", "objectClass"],
 732                                     controls=["show_recycled:1"])
 733             o = res[0]
 734             is_deleted = 'isDeleted' in o and o['isDeleted'][0].upper() == 'TRUE'
 735             if is_deleted:
 736                 # we don't fix deleted objects
 737                 return (sd, None)
 738             cls = o["objectClass"][-1]
 739
 740         t = self.lookup_class_schemaIDGUID(cls)
 741
 742         if t != last_inherited_type:
 743             # broken
 744             return (sd_clean, sd)
 745
 746         # ok
 747         return (sd, None)
 748
 749     def err_wrong_sd(self, dn, sd, sd_broken):
 750         '''re-write the SD due to incorrect inherited ACEs'''
 751         sd_attr = "nTSecurityDescriptor"
 752         sd_val = ndr_pack(sd)
 753         sd_flags = security.SECINFO_DACL | security.SECINFO_SACL
 754
 755         if not self.confirm_all('Fix %s on %s?' % (sd_attr, dn), 'fix_ntsecuritydescriptor'):
 756             self.report('Not fixing %s on %s\n' % (sd_attr, dn))
 757             return
 758
 759         nmsg = ldb.Message()
 760         nmsg.dn = dn
 761         nmsg[sd_attr] = ldb.MessageElement(sd_val, ldb.FLAG_MOD_REPLACE, sd_attr)
 762         if self.do_modify(nmsg, ["sd_flags:1:%d" % sd_flags],
 763                           "Failed to fix attribute %s" % sd_attr):
 764             self.report("Fixed attribute '%s' of '%s'\n" % (sd_attr, dn))
 765
 766     def err_wrong_default_sd(self, dn, sd, sd_old, diff):
 767         '''re-write the SD due to not matching the default (optional mode for fixing an incorrect provision)'''
 768         sd_attr = "nTSecurityDescriptor"
 769         sd_val = ndr_pack(sd)
 770         sd_old_val = ndr_pack(sd_old)
 771         sd_flags = security.SECINFO_DACL | security.SECINFO_SACL
 772         if sd.owner_sid is not None:
 773             sd_flags |= security.SECINFO_OWNER
 774         if sd.group_sid is not None:
 775             sd_flags |= security.SECINFO_GROUP
 776
 777         if not self.confirm_all('Reset %s on %s back to provision default?\n%s' % (sd_attr, dn, diff), 'reset_all_well_known_acls'):
 778             self.report('Not resetting %s on %s\n' % (sd_attr, dn))
 779             return
 780
 781         m = ldb.Message()
 782         m.dn = dn
 783         m[sd_attr] = ldb.MessageElement(sd_val, ldb.FLAG_MOD_REPLACE, sd_attr)
 784         if self.do_modify(m, ["sd_flags:1:%d" % sd_flags],
 785                           "Failed to reset attribute %s" % sd_attr):
 786             self.report("Fixed attribute '%s' of '%s'\n" % (sd_attr, dn))
 787
 788     def err_missing_sd_owner(self, dn, sd):
 789         '''re-write the SD due to a missing owner or group'''
 790         sd_attr = "nTSecurityDescriptor"
 791         sd_val = ndr_pack(sd)
 792         sd_flags = security.SECINFO_OWNER | security.SECINFO_GROUP
 793
 794         if not self.confirm_all('Fix missing owner or group in %s on %s?' % (sd_attr, dn), 'fix_ntsecuritydescriptor_owner_group'):
 795             self.report('Not fixing missing owner or group %s on %s\n' % (sd_attr, dn))
 796             return
 797
 798         nmsg = ldb.Message()
 799         nmsg.dn = dn
 800         nmsg[sd_attr] = ldb.MessageElement(sd_val, ldb.FLAG_MOD_REPLACE, sd_attr)
 801
 802         # By setting the session_info to admin_session_info and
 803         # setting the security.SECINFO_OWNER | security.SECINFO_GROUP
 804         # flags we cause the descriptor module to set the correct
 805         # owner and group on the SD, replacing the None/NULL values
 806         # for owner_sid and group_sid currently present.
 807         #
 808         # The admin_session_info matches that used in provision, and
 809         # is the best guess we can make for an existing object that
 810         # hasn't had something specifically set.
 811         #
 812         # This is important for the dns related naming contexts.
 813         self.samdb.set_session_info(self.admin_session_info)
 814         if self.do_modify(nmsg, ["sd_flags:1:%d" % sd_flags],
 815                           "Failed to fix metadata for attribute %s" % sd_attr):
 816             self.report("Fixed attribute '%s' of '%s'\n" % (sd_attr, dn))
 817         self.samdb.set_session_info(self.system_session_info)
 818
 819     def is_fsmo_role(self, dn):
 820         if dn == self.samdb.domain_dn:
 821             return True
 822         if dn == self.infrastructure_dn:
 823             return True
 824         if dn == self.naming_dn:
 825             return True
 826         if dn == self.schema_dn:
 827             return True
 828         if dn == self.rid_dn:
 829             return True
 830
 831         return False
 832
 833     def calculate_instancetype(self, dn):
 834         instancetype = 0
 835         nc_root = self.samdb.get_nc_root(dn)
 836         if dn == nc_root:
 837             instancetype |= dsdb.INSTANCE_TYPE_IS_NC_HEAD
 838             try:
 839                 self.samdb.search(base=dn.parent(), scope=ldb.SCOPE_BASE, attrs=[], controls=["show_recycled:1"])
 840             except ldb.LdbError, (enum, estr):
 841                 if enum != ldb.ERR_NO_SUCH_OBJECT:
 842                     raise
 843             else:
 844                 instancetype |= dsdb.INSTANCE_TYPE_NC_ABOVE
 845
 846         if self.write_ncs is not None and str(nc_root) in self.write_ncs:
 847             instancetype |= dsdb.INSTANCE_TYPE_WRITE
 848
 849         return instancetype
 850
 851     def get_wellknown_sd(self, dn):
 852         for [sd_dn, descriptor_fn] in self.wellknown_sds:
 853             if dn == sd_dn:
 854                 domain_sid = security.dom_sid(self.samdb.get_domain_sid())
 855                 return ndr_unpack(security.descriptor,
 856                                   descriptor_fn(domain_sid,
 857                                                 name_map=self.name_map))
 858
 859         raise KeyError
 860
 861     def check_object(self, dn, attrs=['*']):
 862         '''check one object'''
 863         if self.verbose:
 864             self.report("Checking object %s" % dn)
 865         if '*' in attrs:
 866             attrs.append("replPropertyMetaData")
 867
 868         try:
 869             sd_flags = 0
 870             sd_flags |= security.SECINFO_OWNER
 871             sd_flags |= security.SECINFO_GROUP
 872             sd_flags |= security.SECINFO_DACL
 873             sd_flags |= security.SECINFO_SACL
 874
 875             res = self.samdb.search(base=dn, scope=ldb.SCOPE_BASE,
 876                                     controls=[
 877                                         "extended_dn:1:1",
 878                                         "show_recycled:1",
 879                                         "show_deleted:1",
 880                                         "sd_flags:1:%d" % sd_flags,
 881                                     ],
 882                                     attrs=attrs)
 883         except ldb.LdbError, (enum, estr):
 884             if enum == ldb.ERR_NO_SUCH_OBJECT:
 885                 if self.in_transaction:
 886                     self.report("ERROR: Object %s disappeared during check" % dn)
 887                     return 1
 888                 return 0
 889             raise
 890         if len(res) != 1:
 891             self.report("ERROR: Object %s failed to load during check" % dn)
 892             return 1
 893         obj = res[0]
 894         error_count = 0
 895         list_attrs_from_md = []
 896         list_attrs_seen = []
 897         got_repl_property_meta_data = False
 898
 899         for attrname in obj:
 900             if attrname == 'dn':
 901                 continue
 902
 903             if str(attrname).lower() == 'replpropertymetadata':
 904                 list_attrs_from_md = self.process_metadata(obj[attrname])
 905                 got_repl_property_meta_data = True
 906                 continue
 907
 908             if str(attrname).lower() == 'ntsecuritydescriptor':
 909                 (sd, sd_broken) = self.process_sd(dn, obj)
 910                 if sd_broken is not None:
 911                     self.err_wrong_sd(dn, sd, sd_broken)
 912                     error_count += 1
 913                     continue
 914
 915                 if sd.owner_sid is None or sd.group_sid is None:
 916                     self.err_missing_sd_owner(dn, sd)
 917                     error_count += 1
 918                     continue
 919
 920                 if self.reset_well_known_acls:
 921                     try:
 922                         well_known_sd = self.get_wellknown_sd(dn)
 923                     except KeyError:
 924                         continue
 925
 926                     current_sd = ndr_unpack(security.descriptor,
 927                                             str(obj[attrname][0]))
 928
 929                     diff = get_diff_sds(well_known_sd, current_sd, security.dom_sid(self.samdb.get_domain_sid()))
 930                     if diff != "":
 931                         self.err_wrong_default_sd(dn, well_known_sd, current_sd, diff)
 932                         error_count += 1
 933                         continue
 934                 continue
 935
 936             if str(attrname).lower() == 'objectclass':
 937                 normalised = self.samdb.dsdb_normalise_attributes(self.samdb_schema, attrname, list(obj[attrname]))
 938                 if list(normalised) != list(obj[attrname]):
 939                     self.err_normalise_mismatch_replace(dn, attrname, list(obj[attrname]))
 940                     error_count += 1
 941                 continue
 942
 943             # check for empty attributes
 944             for val in obj[attrname]:
 945                 if val == '':
 946                     self.err_empty_attribute(dn, attrname)
 947                     error_count += 1
 948                     continue
 949
 950             # get the syntax oid for the attribute, so we can can have
 951             # special handling for some specific attribute types
 952             try:
 953                 syntax_oid = self.samdb_schema.get_syntax_oid_from_lDAPDisplayName(attrname)
 954             except Exception, msg:
 955                 self.err_unknown_attribute(obj, attrname)
 956                 error_count += 1
 957                 continue
 958
 959             flag = self.samdb_schema.get_systemFlags_from_lDAPDisplayName(attrname)
 960             if (not flag & dsdb.DS_FLAG_ATTR_NOT_REPLICATED
 961                 and not flag & dsdb.DS_FLAG_ATTR_IS_CONSTRUCTED
 962                 and not self.samdb_schema.get_linkId_from_lDAPDisplayName(attrname)):
 963                 list_attrs_seen.append(str(attrname).lower())
 964
 965             if syntax_oid in [ dsdb.DSDB_SYNTAX_BINARY_DN, dsdb.DSDB_SYNTAX_OR_NAME,
 966                                dsdb.DSDB_SYNTAX_STRING_DN, ldb.SYNTAX_DN ]:
 967                 # it's some form of DN, do specialised checking on those
 968                 error_count += self.check_dn(obj, attrname, syntax_oid)
 969
 970             # check for incorrectly normalised attributes
 971             for val in obj[attrname]:
 972                 normalised = self.samdb.dsdb_normalise_attributes(self.samdb_schema, attrname, [val])
 973                 if len(normalised) != 1 or normalised[0] != val:
 974                     self.err_normalise_mismatch(dn, attrname, obj[attrname])
 975                     error_count += 1
 976                     break
 977
 978             if str(attrname).lower() == "instancetype":
 979                 calculated_instancetype = self.calculate_instancetype(dn)
 980                 if len(obj["instanceType"]) != 1 or obj["instanceType"][0] != str(calculated_instancetype):
 981                     self.err_wrong_instancetype(obj, calculated_instancetype)
 982
 983         show_dn = True
 984         if got_repl_property_meta_data:
 985             rdn = (str(dn).split(","))[0]
 986             if rdn == "CN=Deleted Objects":
 987                 isDeletedAttId = 131120
 988                 # It's 29/12/9999 at 23:59:59 UTC as specified in MS-ADTS 7.1.1.4.2 Deleted Objects Container
 989
 990                 expectedTimeDo = 2650466015990000000
 991                 originating = self.get_originating_time(obj["replPropertyMetaData"], isDeletedAttId)
 992                 if originating != expectedTimeDo:
 993                     if self.confirm_all("Fix isDeleted originating_change_time on '%s'" % str(dn), 'fix_time_metadata'):
 994                         nmsg = ldb.Message()
 995                         nmsg.dn = dn
 996                         nmsg["isDeleted"] = ldb.MessageElement("TRUE", ldb.FLAG_MOD_REPLACE, "isDeleted")
 997                         error_count += 1
 998                         self.samdb.modify(nmsg, controls=["provision:0"])
 999
1000                     else:
1001                         self.report("Not fixing isDeleted originating_change_time on '%s'" % str(dn))
1002             for att in list_attrs_seen:
1003                 if not att in list_attrs_from_md:
1004                     if show_dn:
1005                         self.report("On object %s" % dn)
1006                         show_dn = False
1007                     error_count += 1
1008                     self.report("ERROR: Attribute %s not present in replication metadata" % att)
1009                     if not self.confirm_all("Fix missing replPropertyMetaData element '%s'" % att, 'fix_all_metadata'):
1010                         self.report("Not fixing missing replPropertyMetaData element '%s'" % att)
1011                         continue
1012                     self.fix_metadata(dn, att)
1013
1014         if self.is_fsmo_role(dn):
1015             if "fSMORoleOwner" not in obj:
1016                 self.err_no_fsmoRoleOwner(obj)
1017                 error_count += 1
1018
1019         try:
1020             if dn != self.samdb.get_root_basedn():
1021                 res = self.samdb.search(base=dn.parent(), scope=ldb.SCOPE_BASE,
1022                                         controls=["show_recycled:1", "show_deleted:1"])
1023         except ldb.LdbError, (enum, estr):
1024             if enum == ldb.ERR_NO_SUCH_OBJECT:
1025                 self.err_missing_parent(obj)
1026                 error_count += 1
1027             else:
1028                 raise
1029
1030         return error_count
1031
1032     ################################################################
1033     # check special @ROOTDSE attributes
1034     def check_rootdse(self):
1035         '''check the @ROOTDSE special object'''
1036         dn = ldb.Dn(self.samdb, '@ROOTDSE')
1037         if self.verbose:
1038             self.report("Checking object %s" % dn)
1039         res = self.samdb.search(base=dn, scope=ldb.SCOPE_BASE)
1040         if len(res) != 1:
1041             self.report("Object %s disappeared during check" % dn)
1042             return 1
1043         obj = res[0]
1044         error_count = 0
1045
1046         # check that the dsServiceName is in GUID form
1047         if not 'dsServiceName' in obj:
1048             self.report('ERROR: dsServiceName missing in @ROOTDSE')
1049             return error_count+1
1050
1051         if not obj['dsServiceName'][0].startswith('<GUID='):
1052             self.report('ERROR: dsServiceName not in GUID form in @ROOTDSE')
1053             error_count += 1
1054             if not self.confirm('Change dsServiceName to GUID form?'):
1055                 return error_count
1056             res = self.samdb.search(base=ldb.Dn(self.samdb, obj['dsServiceName'][0]),
1057                                     scope=ldb.SCOPE_BASE, attrs=['objectGUID'])
1058             guid_str = str(ndr_unpack(misc.GUID, res[0]['objectGUID'][0]))
1059             m = ldb.Message()
1060             m.dn = dn
1061             m['dsServiceName'] = ldb.MessageElement("<GUID=%s>" % guid_str,
1062                                                     ldb.FLAG_MOD_REPLACE, 'dsServiceName')
1063             if self.do_modify(m, [], "Failed to change dsServiceName to GUID form", validate=False):
1064                 self.report("Changed dsServiceName to GUID form")
1065         return error_count
1066
1067
1068     ###############################################
1069     # re-index the database
1070     def reindex_database(self):
1071         '''re-index the whole database'''
1072         m = ldb.Message()
1073         m.dn = ldb.Dn(self.samdb, "@ATTRIBUTES")
1074         m['add']    = ldb.MessageElement('NONE', ldb.FLAG_MOD_ADD, 'force_reindex')
1075         m['delete'] = ldb.MessageElement('NONE', ldb.FLAG_MOD_DELETE, 'force_reindex')
1076         return self.do_modify(m, [], 're-indexed database', validate=False)
1077
1078     ###############################################
1079     # reset @MODULES
1080     def reset_modules(self):
1081         '''reset @MODULES to that needed for current sam.ldb (to read a very old database)'''
1082         m = ldb.Message()
1083         m.dn = ldb.Dn(self.samdb, "@MODULES")
1084         m['@LIST'] = ldb.MessageElement('samba_dsdb', ldb.FLAG_MOD_REPLACE, '@LIST')
1085         return self.do_modify(m, [], 'reset @MODULES on database', validate=False)