# Samba4 AD database checker # # Copyright (C) Andrew Tridgell 2011 # Copyright (C) Matthieu Patou 2011 # # This program is free software; you can redistribute it and/or modify # it under the terms of the GNU General Public License as published by # the Free Software Foundation; either version 3 of the License, or # (at your option) any later version. # # This program is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU General Public License for more details. # # You should have received a copy of the GNU General Public License # along with this program. If not, see . # import ldb import samba import time from base64 import b64decode from samba import dsdb from samba import common from samba.dcerpc import misc from samba.ndr import ndr_unpack, ndr_pack from samba.dcerpc import drsblobs from samba.common import dsdb_Dn from samba.dcerpc import security from samba.descriptor import get_wellknown_sds, get_diff_sds from samba.auth import system_session, admin_session class dbcheck(object): """check a SAM database for errors""" def __init__(self, samdb, samdb_schema=None, verbose=False, fix=False, yes=False, quiet=False, in_transaction=False, reset_well_known_acls=False): self.samdb = samdb self.dict_oid_name = None self.samdb_schema = (samdb_schema or samdb) self.verbose = verbose self.fix = fix self.yes = yes self.quiet = quiet self.remove_all_unknown_attributes = False self.remove_all_empty_attributes = False self.fix_all_normalisation = False self.fix_all_DN_GUIDs = False self.fix_all_binary_dn = False self.remove_all_deleted_DN_links = False self.fix_all_target_mismatch = False self.fix_all_metadata = False self.fix_time_metadata = False self.fix_all_missing_backlinks = False self.fix_all_orphaned_backlinks = False self.fix_rmd_flags = False self.fix_ntsecuritydescriptor = False self.fix_ntsecuritydescriptor_owner_group = False self.seize_fsmo_role = False self.move_to_lost_and_found = False self.fix_instancetype = False self.fix_replmetadata_zero_invocationid = False self.fix_deleted_deleted_objects = False self.fix_dn = False self.fix_base64_userparameters = False self.fix_utf8_userparameters = False self.fix_doubled_userparameters = False self.reset_well_known_acls = reset_well_known_acls self.reset_all_well_known_acls = False self.in_transaction = in_transaction self.infrastructure_dn = ldb.Dn(samdb, "CN=Infrastructure," + samdb.domain_dn()) self.naming_dn = ldb.Dn(samdb, "CN=Partitions,%s" % samdb.get_config_basedn()) self.schema_dn = samdb.get_schema_basedn() self.rid_dn = ldb.Dn(samdb, "CN=RID Manager$,CN=System," + samdb.domain_dn()) self.ntds_dsa = ldb.Dn(samdb, samdb.get_dsServiceName()) self.class_schemaIDGUID = {} self.wellknown_sds = get_wellknown_sds(self.samdb) self.fix_all_missing_objectclass = False self.name_map = {} try: res = samdb.search(base="CN=DnsAdmins,CN=Users,%s" % samdb.domain_dn(), scope=ldb.SCOPE_BASE, attrs=["objectSid"]) dnsadmins_sid = ndr_unpack(security.dom_sid, res[0]["objectSid"][0]) self.name_map['DnsAdmins'] = str(dnsadmins_sid) except ldb.LdbError, (enum, estr): if enum != ldb.ERR_NO_SUCH_OBJECT: raise pass self.system_session_info = system_session() self.admin_session_info = admin_session(None, samdb.get_domain_sid()) res = self.samdb.search(base=self.ntds_dsa, scope=ldb.SCOPE_BASE, attrs=['msDS-hasMasterNCs', 'hasMasterNCs']) if "msDS-hasMasterNCs" in res[0]: self.write_ncs = res[0]["msDS-hasMasterNCs"] else: # If the Forest Level is less than 2003 then there is no # msDS-hasMasterNCs, so we fall back to hasMasterNCs # no need to merge as all the NCs that are in hasMasterNCs must # also be in msDS-hasMasterNCs (but not the opposite) if "hasMasterNCs" in res[0]: self.write_ncs = res[0]["hasMasterNCs"] else: self.write_ncs = None res = self.samdb.search(base="", scope=ldb.SCOPE_BASE, attrs=['namingContexts']) try: ncs = res[0]["namingContexts"] self.deleted_objects_containers = [] for nc in ncs: try: dn = self.samdb.get_wellknown_dn(ldb.Dn(self.samdb, nc), dsdb.DS_GUID_DELETED_OBJECTS_CONTAINER) self.deleted_objects_containers.append(dn) except KeyError: pass except KeyError: pass except IndexError: pass def check_database(self, DN=None, scope=ldb.SCOPE_SUBTREE, controls=[], attrs=['*']): '''perform a database check, returning the number of errors found''' res = self.samdb.search(base=DN, scope=scope, attrs=['dn'], controls=controls) self.report('Checking %u objects' % len(res)) error_count = 0 for object in res: error_count += self.check_object(object.dn, attrs=attrs) if DN is None: error_count += self.check_rootdse() if error_count != 0 and not self.fix: self.report("Please use --fix to fix these errors") self.report('Checked %u objects (%u errors)' % (len(res), error_count)) return error_count def report(self, msg): '''print a message unless quiet is set''' if not self.quiet: print(msg) def confirm(self, msg, allow_all=False, forced=False): '''confirm a change''' if not self.fix: return False if self.quiet: return self.yes if self.yes: forced = True return common.confirm(msg, forced=forced, allow_all=allow_all) ################################################################ # a local confirm function with support for 'all' def confirm_all(self, msg, all_attr): '''confirm a change with support for "all" ''' if not self.fix: return False if self.quiet: return self.yes if getattr(self, all_attr) == 'NONE': return False if getattr(self, all_attr) == 'ALL': forced = True else: forced = self.yes c = common.confirm(msg, forced=forced, allow_all=True) if c == 'ALL': setattr(self, all_attr, 'ALL') return True if c == 'NONE': setattr(self, all_attr, 'NONE') return False return c def do_delete(self, dn, controls, msg): '''delete dn with optional verbose output''' if self.verbose: self.report("delete DN %s" % dn) try: controls = controls + ["local_oid:%s:0" % dsdb.DSDB_CONTROL_DBCHECK] self.samdb.delete(dn, controls=controls) except Exception, err: self.report("%s : %s" % (msg, err)) return False return True def do_modify(self, m, controls, msg, validate=True): '''perform a modify with optional verbose output''' if self.verbose: self.report(self.samdb.write_ldif(m, ldb.CHANGETYPE_MODIFY)) try: controls = controls + ["local_oid:%s:0" % dsdb.DSDB_CONTROL_DBCHECK] self.samdb.modify(m, controls=controls, validate=validate) except Exception, err: self.report("%s : %s" % (msg, err)) return False return True def do_rename(self, from_dn, to_rdn, to_base, controls, msg): '''perform a modify with optional verbose output''' if self.verbose: self.report("""dn: %s changeType: modrdn newrdn: %s deleteOldRdn: 1 newSuperior: %s""" % (str(from_dn), str(to_rdn), str(to_base))) try: to_dn = to_rdn + to_base controls = controls + ["local_oid:%s:0" % dsdb.DSDB_CONTROL_DBCHECK] self.samdb.rename(from_dn, to_dn, controls=controls) except Exception, err: self.report("%s : %s" % (msg, err)) return False return True def err_empty_attribute(self, dn, attrname): '''fix empty attributes''' self.report("ERROR: Empty attribute %s in %s" % (attrname, dn)) if not self.confirm_all('Remove empty attribute %s from %s?' % (attrname, dn), 'remove_all_empty_attributes'): self.report("Not fixing empty attribute %s" % attrname) return m = ldb.Message() m.dn = dn m[attrname] = ldb.MessageElement('', ldb.FLAG_MOD_DELETE, attrname) if self.do_modify(m, ["relax:0", "show_recycled:1"], "Failed to remove empty attribute %s" % attrname, validate=False): self.report("Removed empty attribute %s" % attrname) def err_normalise_mismatch(self, dn, attrname, values): '''fix attribute normalisation errors''' self.report("ERROR: Normalisation error for attribute %s in %s" % (attrname, dn)) mod_list = [] for val in values: normalised = self.samdb.dsdb_normalise_attributes( self.samdb_schema, attrname, [val]) if len(normalised) != 1: self.report("Unable to normalise value '%s'" % val) mod_list.append((val, '')) elif (normalised[0] != val): self.report("value '%s' should be '%s'" % (val, normalised[0])) mod_list.append((val, normalised[0])) if not self.confirm_all('Fix normalisation for %s from %s?' % (attrname, dn), 'fix_all_normalisation'): self.report("Not fixing attribute %s" % attrname) return m = ldb.Message() m.dn = dn for i in range(0, len(mod_list)): (val, nval) = mod_list[i] m['value_%u' % i] = ldb.MessageElement(val, ldb.FLAG_MOD_DELETE, attrname) if nval != '': m['normv_%u' % i] = ldb.MessageElement(nval, ldb.FLAG_MOD_ADD, attrname) if self.do_modify(m, ["relax:0", "show_recycled:1"], "Failed to normalise attribute %s" % attrname, validate=False): self.report("Normalised attribute %s" % attrname) def err_normalise_mismatch_replace(self, dn, attrname, values): '''fix attribute normalisation errors''' normalised = self.samdb.dsdb_normalise_attributes(self.samdb_schema, attrname, values) self.report("ERROR: Normalisation error for attribute '%s' in '%s'" % (attrname, dn)) self.report("Values/Order of values do/does not match: %s/%s!" % (values, list(normalised))) if list(normalised) == values: return if not self.confirm_all("Fix normalisation for '%s' from '%s'?" % (attrname, dn), 'fix_all_normalisation'): self.report("Not fixing attribute '%s'" % attrname) return m = ldb.Message() m.dn = dn m[attrname] = ldb.MessageElement(normalised, ldb.FLAG_MOD_REPLACE, attrname) if self.do_modify(m, ["relax:0", "show_recycled:1"], "Failed to normalise attribute %s" % attrname, validate=False): self.report("Normalised attribute %s" % attrname) def is_deleted_objects_dn(self, dsdb_dn): '''see if a dsdb_Dn is the special Deleted Objects DN''' return dsdb_dn.prefix == "B:32:%s:" % dsdb.DS_GUID_DELETED_OBJECTS_CONTAINER def err_missing_objectclass(self, dn): """handle object without objectclass""" self.report("ERROR: missing objectclass in object %s. If you have another working DC, please run 'samba-tool drs replicate --full-sync --local %s'" % (dn, self.samdb.get_nc_root(dn))) if not self.confirm_all("If you cannot re-sync from another DC, do you wish to delete object '%s'?" % dn, 'fix_all_missing_objectclass'): self.report("Not deleting object with missing objectclass '%s'" % dn) return if self.do_delete(dn, ["relax:0"], "Failed to remove DN %s" % dn): self.report("Removed DN %s" % dn) def err_deleted_dn(self, dn, attrname, val, dsdb_dn, correct_dn): """handle a DN pointing to a deleted object""" self.report("ERROR: target DN is deleted for %s in object %s - %s" % (attrname, dn, val)) self.report("Target GUID points at deleted DN %s" % correct_dn) if not self.confirm_all('Remove DN link?', 'remove_all_deleted_DN_links'): self.report("Not removing") return m = ldb.Message() m.dn = dn m['old_value'] = ldb.MessageElement(val, ldb.FLAG_MOD_DELETE, attrname) if self.do_modify(m, ["show_recycled:1", "local_oid:%s:0" % dsdb.DSDB_CONTROL_DBCHECK], "Failed to remove deleted DN attribute %s" % attrname): self.report("Removed deleted DN on attribute %s" % attrname) def err_missing_dn_GUID(self, dn, attrname, val, dsdb_dn): """handle a missing target DN (both GUID and DN string form are missing)""" # check if its a backlink linkID = self.samdb_schema.get_linkId_from_lDAPDisplayName(attrname) if (linkID & 1 == 0) and str(dsdb_dn).find('\\0ADEL') == -1: self.report("Not removing dangling forward link") return self.err_deleted_dn(dn, attrname, val, dsdb_dn, dsdb_dn) def err_incorrect_dn_GUID(self, dn, attrname, val, dsdb_dn, errstr): """handle a missing GUID extended DN component""" self.report("ERROR: %s component for %s in object %s - %s" % (errstr, attrname, dn, val)) controls=["extended_dn:1:1", "show_recycled:1"] try: res = self.samdb.search(base=str(dsdb_dn.dn), scope=ldb.SCOPE_BASE, attrs=[], controls=controls) except ldb.LdbError, (enum, estr): self.report("unable to find object for DN %s - (%s)" % (dsdb_dn.dn, estr)) self.err_missing_dn_GUID(dn, attrname, val, dsdb_dn) return if len(res) == 0: self.report("unable to find object for DN %s" % dsdb_dn.dn) self.err_missing_dn_GUID(dn, attrname, val, dsdb_dn) return dsdb_dn.dn = res[0].dn if not self.confirm_all('Change DN to %s?' % str(dsdb_dn), 'fix_all_DN_GUIDs'): self.report("Not fixing %s" % errstr) return m = ldb.Message() m.dn = dn m['old_value'] = ldb.MessageElement(val, ldb.FLAG_MOD_DELETE, attrname) m['new_value'] = ldb.MessageElement(str(dsdb_dn), ldb.FLAG_MOD_ADD, attrname) if self.do_modify(m, ["show_recycled:1"], "Failed to fix %s on attribute %s" % (errstr, attrname)): self.report("Fixed %s on attribute %s" % (errstr, attrname)) def err_incorrect_binary_dn(self, dn, attrname, val, dsdb_dn, errstr): """handle an incorrect binary DN component""" self.report("ERROR: %s binary component for %s in object %s - %s" % (errstr, attrname, dn, val)) controls=["extended_dn:1:1", "show_recycled:1"] if not self.confirm_all('Change DN to %s?' % str(dsdb_dn), 'fix_all_binary_dn'): self.report("Not fixing %s" % errstr) return m = ldb.Message() m.dn = dn m['old_value'] = ldb.MessageElement(val, ldb.FLAG_MOD_DELETE, attrname) m['new_value'] = ldb.MessageElement(str(dsdb_dn), ldb.FLAG_MOD_ADD, attrname) if self.do_modify(m, ["show_recycled:1"], "Failed to fix %s on attribute %s" % (errstr, attrname)): self.report("Fixed %s on attribute %s" % (errstr, attrname)) def err_dn_target_mismatch(self, dn, attrname, val, dsdb_dn, correct_dn, errstr): """handle a DN string being incorrect""" self.report("ERROR: incorrect DN string component for %s in object %s - %s" % (attrname, dn, val)) dsdb_dn.dn = correct_dn if not self.confirm_all('Change DN to %s?' % str(dsdb_dn), 'fix_all_target_mismatch'): self.report("Not fixing %s" % errstr) return m = ldb.Message() m.dn = dn m['old_value'] = ldb.MessageElement(val, ldb.FLAG_MOD_DELETE, attrname) m['new_value'] = ldb.MessageElement(str(dsdb_dn), ldb.FLAG_MOD_ADD, attrname) if self.do_modify(m, ["show_recycled:1"], "Failed to fix incorrect DN string on attribute %s" % attrname): self.report("Fixed incorrect DN string on attribute %s" % (attrname)) def err_unknown_attribute(self, obj, attrname): '''handle an unknown attribute error''' self.report("ERROR: unknown attribute '%s' in %s" % (attrname, obj.dn)) if not self.confirm_all('Remove unknown attribute %s' % attrname, 'remove_all_unknown_attributes'): self.report("Not removing %s" % attrname) return m = ldb.Message() m.dn = obj.dn m['old_value'] = ldb.MessageElement([], ldb.FLAG_MOD_DELETE, attrname) if self.do_modify(m, ["relax:0", "show_recycled:1"], "Failed to remove unknown attribute %s" % attrname): self.report("Removed unknown attribute %s" % (attrname)) def err_missing_backlink(self, obj, attrname, val, backlink_name, target_dn): '''handle a missing backlink value''' self.report("ERROR: missing backlink attribute '%s' in %s for link %s in %s" % (backlink_name, target_dn, attrname, obj.dn)) if not self.confirm_all('Fix missing backlink %s' % backlink_name, 'fix_all_missing_backlinks'): self.report("Not fixing missing backlink %s" % backlink_name) return m = ldb.Message() m.dn = obj.dn m['old_value'] = ldb.MessageElement(val, ldb.FLAG_MOD_DELETE, attrname) m['new_value'] = ldb.MessageElement(val, ldb.FLAG_MOD_ADD, attrname) if self.do_modify(m, ["show_recycled:1"], "Failed to fix missing backlink %s" % backlink_name): self.report("Fixed missing backlink %s" % (backlink_name)) def err_incorrect_rmd_flags(self, obj, attrname, revealed_dn): '''handle a incorrect RMD_FLAGS value''' rmd_flags = int(revealed_dn.dn.get_extended_component("RMD_FLAGS")) 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())) if not self.confirm_all('Fix incorrect RMD_FLAGS %u' % rmd_flags, 'fix_rmd_flags'): self.report("Not fixing incorrect RMD_FLAGS %u" % rmd_flags) return m = ldb.Message() m.dn = obj.dn m['old_value'] = ldb.MessageElement(str(revealed_dn), ldb.FLAG_MOD_DELETE, attrname) if self.do_modify(m, ["show_recycled:1", "reveal_internals:0", "show_deleted:0"], "Failed to fix incorrect RMD_FLAGS %u" % rmd_flags): self.report("Fixed incorrect RMD_FLAGS %u" % (rmd_flags)) def err_orphaned_backlink(self, obj, attrname, val, link_name, target_dn): '''handle a orphaned backlink value''' self.report("ERROR: orphaned backlink attribute '%s' in %s for link %s in %s" % (attrname, obj.dn, link_name, target_dn)) if not self.confirm_all('Remove orphaned backlink %s' % link_name, 'fix_all_orphaned_backlinks'): self.report("Not removing orphaned backlink %s" % link_name) return m = ldb.Message() m.dn = obj.dn m['value'] = ldb.MessageElement(val, ldb.FLAG_MOD_DELETE, attrname) if self.do_modify(m, ["show_recycled:1", "relax:0"], "Failed to fix orphaned backlink %s" % link_name): self.report("Fixed orphaned backlink %s" % (link_name)) def err_no_fsmoRoleOwner(self, obj): '''handle a missing fSMORoleOwner''' self.report("ERROR: fSMORoleOwner not found for role %s" % (obj.dn)) res = self.samdb.search("", scope=ldb.SCOPE_BASE, attrs=["dsServiceName"]) assert len(res) == 1 serviceName = res[0]["dsServiceName"][0] if not self.confirm_all('Sieze role %s onto current DC by adding fSMORoleOwner=%s' % (obj.dn, serviceName), 'seize_fsmo_role'): self.report("Not Siezing role %s onto current DC by adding fSMORoleOwner=%s" % (obj.dn, serviceName)) return m = ldb.Message() m.dn = obj.dn m['value'] = ldb.MessageElement(serviceName, ldb.FLAG_MOD_ADD, 'fSMORoleOwner') if self.do_modify(m, [], "Failed to sieze role %s onto current DC by adding fSMORoleOwner=%s" % (obj.dn, serviceName)): self.report("Siezed role %s onto current DC by adding fSMORoleOwner=%s" % (obj.dn, serviceName)) def err_missing_parent(self, obj): '''handle a missing parent''' self.report("ERROR: parent object not found for %s" % (obj.dn)) if not self.confirm_all('Move object %s into LostAndFound?' % (obj.dn), 'move_to_lost_and_found'): self.report('Not moving object %s into LostAndFound' % (obj.dn)) return keep_transaction = True self.samdb.transaction_start() try: nc_root = self.samdb.get_nc_root(obj.dn); lost_and_found = self.samdb.get_wellknown_dn(nc_root, dsdb.DS_GUID_LOSTANDFOUND_CONTAINER) new_dn = ldb.Dn(self.samdb, str(obj.dn)) new_dn.remove_base_components(len(new_dn) - 1) if self.do_rename(obj.dn, new_dn, lost_and_found, ["show_deleted:0", "relax:0"], "Failed to rename object %s into lostAndFound at %s" % (obj.dn, new_dn + lost_and_found)): self.report("Renamed object %s into lostAndFound at %s" % (obj.dn, new_dn + lost_and_found)) m = ldb.Message() m.dn = obj.dn m['lastKnownParent'] = ldb.MessageElement(str(obj.dn.parent()), ldb.FLAG_MOD_REPLACE, 'lastKnownParent') if self.do_modify(m, [], "Failed to set lastKnownParent on lostAndFound object at %s" % (new_dn + lost_and_found)): self.report("Set lastKnownParent on lostAndFound object at %s" % (new_dn + lost_and_found)) keep_transaction = True except: self.samdb.transaction_cancel() raise if keep_transaction: self.samdb.transaction_commit() else: self.samdb.transaction_cancel() def err_wrong_dn(self, obj, new_dn, rdn_attr, rdn_val, name_val): '''handle a wrong dn''' new_rdn = ldb.Dn(self.samdb, str(new_dn)) new_rdn.remove_base_components(len(new_rdn) - 1) new_parent = new_dn.parent() attributes = "" if rdn_val != name_val: attributes += "%s=%r " % (rdn_attr, rdn_val) attributes += "name=%r" % (name_val) self.report("ERROR: wrong dn[%s] %s new_dn[%s]" % (obj.dn, attributes, new_dn)) if not self.confirm_all("Rename %s to %s?" % (obj.dn, new_dn), 'fix_dn'): self.report("Not renaming %s to %s" % (obj.dn, new_dn)) return if self.do_rename(obj.dn, new_rdn, new_parent, ["show_recycled:1", "relax:0"], "Failed to rename object %s into %s" % (obj.dn, new_dn)): self.report("Renamed %s into %s" % (obj.dn, new_dn)) def err_wrong_instancetype(self, obj, calculated_instancetype): '''handle a wrong instanceType''' self.report("ERROR: wrong instanceType %s on %s, should be %d" % (obj["instanceType"], obj.dn, calculated_instancetype)) if not self.confirm_all('Change instanceType from %s to %d on %s?' % (obj["instanceType"], calculated_instancetype, obj.dn), 'fix_instancetype'): self.report('Not changing instanceType from %s to %d on %s' % (obj["instanceType"], calculated_instancetype, obj.dn)) return m = ldb.Message() m.dn = obj.dn m['value'] = ldb.MessageElement(str(calculated_instancetype), ldb.FLAG_MOD_REPLACE, 'instanceType') if self.do_modify(m, ["local_oid:%s:0" % dsdb.DSDB_CONTROL_DBCHECK_MODIFY_RO_REPLICA], "Failed to correct missing instanceType on %s by setting instanceType=%d" % (obj.dn, calculated_instancetype)): self.report("Corrected instancetype on %s by setting instanceType=%d" % (obj.dn, calculated_instancetype)) def err_short_userParameters(self, obj, attrname, value): # This is a truncated userParameters due to a pre 4.1 replication bug self.report("ERROR: incorrect userParameters value on object %s. If you have another working DC that does not give this warning, please run 'samba-tool drs replicate --full-sync --local %s'" % (obj.dn, self.samdb.get_nc_root(obj.dn))) def err_base64_userParameters(self, obj, attrname, value): '''handle a wrong userParameters''' self.report("ERROR: wrongly formatted userParameters %s on %s, should not be base64-encoded" % (value, obj.dn)) if not self.confirm_all('Convert userParameters from base64 encoding on %s?' % (obj.dn), 'fix_base64_userparameters'): self.report('Not changing userParameters from base64 encoding on %s' % (obj.dn)) return m = ldb.Message() m.dn = obj.dn m['value'] = ldb.MessageElement(b64decode(obj[attrname][0]), ldb.FLAG_MOD_REPLACE, 'userParameters') if self.do_modify(m, [], "Failed to correct base64-encoded userParameters on %s by converting from base64" % (obj.dn)): self.report("Corrected base64-encoded userParameters on %s by converting from base64" % (obj.dn)) def err_utf8_userParameters(self, obj, attrname, value): '''handle a wrong userParameters''' self.report("ERROR: wrongly formatted userParameters on %s, should not be psudo-UTF8 encoded" % (obj.dn)) if not self.confirm_all('Convert userParameters from UTF8 encoding on %s?' % (obj.dn), 'fix_utf8_userparameters'): self.report('Not changing userParameters from UTF8 encoding on %s' % (obj.dn)) return m = ldb.Message() m.dn = obj.dn m['value'] = ldb.MessageElement(obj[attrname][0].decode('utf8').encode('utf-16-le'), ldb.FLAG_MOD_REPLACE, 'userParameters') if self.do_modify(m, [], "Failed to correct psudo-UTF8 encoded userParameters on %s by converting from UTF8" % (obj.dn)): self.report("Corrected psudo-UTF8 encoded userParameters on %s by converting from UTF8" % (obj.dn)) def err_doubled_userParameters(self, obj, attrname, value): '''handle a wrong userParameters''' self.report("ERROR: wrongly formatted userParameters on %s, should not be double UTF16 encoded" % (obj.dn)) if not self.confirm_all('Convert userParameters from doubled UTF-16 encoding on %s?' % (obj.dn), 'fix_doubled_userparameters'): self.report('Not changing userParameters from doubled UTF-16 encoding on %s' % (obj.dn)) return m = ldb.Message() m.dn = obj.dn m['value'] = ldb.MessageElement(obj[attrname][0].decode('utf-16-le').decode('utf-16-le').encode('utf-16-le'), ldb.FLAG_MOD_REPLACE, 'userParameters') if self.do_modify(m, [], "Failed to correct doubled-UTF16 encoded userParameters on %s by converting" % (obj.dn)): self.report("Corrected doubled-UTF16 encoded userParameters on %s by converting" % (obj.dn)) def err_odd_userParameters(self, obj, attrname): # This is a truncated userParameters due to a pre 4.1 replication bug self.report("ERROR: incorrect userParameters value on object %s (odd length). If you have another working DC that does not give this warning, please run 'samba-tool drs replicate --full-sync --local %s'" % (obj.dn, self.samdb.get_nc_root(obj.dn))) def find_revealed_link(self, dn, attrname, guid): '''return a revealed link in an object''' res = self.samdb.search(base=dn, scope=ldb.SCOPE_BASE, attrs=[attrname], controls=["show_deleted:0", "extended_dn:0", "reveal_internals:0"]) syntax_oid = self.samdb_schema.get_syntax_oid_from_lDAPDisplayName(attrname) for val in res[0][attrname]: dsdb_dn = dsdb_Dn(self.samdb, val, syntax_oid) guid2 = dsdb_dn.dn.get_extended_component("GUID") if guid == guid2: return dsdb_dn return None def check_dn(self, obj, attrname, syntax_oid): '''check a DN attribute for correctness''' error_count = 0 for val in obj[attrname]: dsdb_dn = dsdb_Dn(self.samdb, val, syntax_oid) # all DNs should have a GUID component guid = dsdb_dn.dn.get_extended_component("GUID") if guid is None: error_count += 1 self.err_incorrect_dn_GUID(obj.dn, attrname, val, dsdb_dn, "missing GUID") continue guidstr = str(misc.GUID(guid)) attrs = ['isDeleted'] if (str(attrname).lower() == 'msds-hasinstantiatedncs') and (obj.dn == self.ntds_dsa): fixing_msDS_HasInstantiatedNCs = True attrs.append("instanceType") else: fixing_msDS_HasInstantiatedNCs = False linkID = self.samdb_schema.get_linkId_from_lDAPDisplayName(attrname) reverse_link_name = self.samdb_schema.get_backlink_from_lDAPDisplayName(attrname) if reverse_link_name is not None: attrs.append(reverse_link_name) # check its the right GUID try: res = self.samdb.search(base="" % guidstr, scope=ldb.SCOPE_BASE, attrs=attrs, controls=["extended_dn:1:1", "show_recycled:1"]) except ldb.LdbError, (enum, estr): error_count += 1 self.err_incorrect_dn_GUID(obj.dn, attrname, val, dsdb_dn, "incorrect GUID") continue if fixing_msDS_HasInstantiatedNCs: dsdb_dn.prefix = "B:8:%08X:" % int(res[0]['instanceType'][0]) dsdb_dn.binary = "%08X" % int(res[0]['instanceType'][0]) if str(dsdb_dn) != val: error_count +=1 self.err_incorrect_binary_dn(obj.dn, attrname, val, dsdb_dn, "incorrect instanceType part of Binary DN") continue # now we have two cases - the source object might or might not be deleted is_deleted = 'isDeleted' in obj and obj['isDeleted'][0].upper() == 'TRUE' target_is_deleted = 'isDeleted' in res[0] and res[0]['isDeleted'][0].upper() == 'TRUE' # the target DN is not allowed to be deleted, unless the target DN is the # special Deleted Objects container if target_is_deleted and not is_deleted and not self.is_deleted_objects_dn(dsdb_dn): error_count += 1 self.err_deleted_dn(obj.dn, attrname, val, dsdb_dn, res[0].dn) continue # check the DN matches in string form if res[0].dn.extended_str() != dsdb_dn.dn.extended_str(): error_count += 1 self.err_dn_target_mismatch(obj.dn, attrname, val, dsdb_dn, res[0].dn, "incorrect string version of DN") continue if is_deleted and not target_is_deleted and reverse_link_name is not None: revealed_dn = self.find_revealed_link(obj.dn, attrname, guid) rmd_flags = revealed_dn.dn.get_extended_component("RMD_FLAGS") if rmd_flags is not None and (int(rmd_flags) & 1) == 0: # the RMD_FLAGS for this link should be 1, as the target is deleted self.err_incorrect_rmd_flags(obj, attrname, revealed_dn) continue # check the reverse_link is correct if there should be one if reverse_link_name is not None: match_count = 0 if reverse_link_name in res[0]: for v in res[0][reverse_link_name]: if v == obj.dn.extended_str(): match_count += 1 if match_count != 1: error_count += 1 if linkID & 1: self.err_orphaned_backlink(obj, attrname, val, reverse_link_name, dsdb_dn.dn) else: self.err_missing_backlink(obj, attrname, val, reverse_link_name, dsdb_dn.dn) continue return error_count def get_originating_time(self, val, attid): '''Read metadata properties and return the originating time for a given attributeId. :return: the originating time or 0 if not found ''' repl = ndr_unpack(drsblobs.replPropertyMetaDataBlob, str(val)) obj = repl.ctr for o in repl.ctr.array: if o.attid == attid: return o.originating_change_time return 0 def process_metadata(self, val): '''Read metadata properties and list attributes in it''' list_att = [] repl = ndr_unpack(drsblobs.replPropertyMetaDataBlob, str(val)) obj = repl.ctr for o in repl.ctr.array: att = self.samdb_schema.get_lDAPDisplayName_by_attid(o.attid) list_att.append(att.lower()) return list_att def fix_metadata(self, dn, attr): '''re-write replPropertyMetaData elements for a single attribute for a object. This is used to fix missing replPropertyMetaData elements''' res = self.samdb.search(base = dn, scope=ldb.SCOPE_BASE, attrs = [attr], controls = ["search_options:1:2", "show_recycled:1"]) msg = res[0] nmsg = ldb.Message() nmsg.dn = dn nmsg[attr] = ldb.MessageElement(msg[attr], ldb.FLAG_MOD_REPLACE, attr) if self.do_modify(nmsg, ["relax:0", "provision:0", "show_recycled:1"], "Failed to fix metadata for attribute %s" % attr): self.report("Fixed metadata for attribute %s" % attr) def ace_get_effective_inherited_type(self, ace): if ace.flags & security.SEC_ACE_FLAG_INHERIT_ONLY: return None check = False if ace.type == security.SEC_ACE_TYPE_ACCESS_ALLOWED_OBJECT: check = True elif ace.type == security.SEC_ACE_TYPE_ACCESS_DENIED_OBJECT: check = True elif ace.type == security.SEC_ACE_TYPE_SYSTEM_AUDIT_OBJECT: check = True elif ace.type == security.SEC_ACE_TYPE_SYSTEM_ALARM_OBJECT: check = True if not check: return None if not ace.object.flags & security.SEC_ACE_INHERITED_OBJECT_TYPE_PRESENT: return None return str(ace.object.inherited_type) def lookup_class_schemaIDGUID(self, cls): if cls in self.class_schemaIDGUID: return self.class_schemaIDGUID[cls] flt = "(&(ldapDisplayName=%s)(objectClass=classSchema))" % cls res = self.samdb.search(base=self.schema_dn, expression=flt, attrs=["schemaIDGUID"]) t = str(ndr_unpack(misc.GUID, res[0]["schemaIDGUID"][0])) self.class_schemaIDGUID[cls] = t return t def process_sd(self, dn, obj): sd_attr = "nTSecurityDescriptor" sd_val = obj[sd_attr] sd = ndr_unpack(security.descriptor, str(sd_val)) is_deleted = 'isDeleted' in obj and obj['isDeleted'][0].upper() == 'TRUE' if is_deleted: # we don't fix deleted objects return (sd, None) sd_clean = security.descriptor() sd_clean.owner_sid = sd.owner_sid sd_clean.group_sid = sd.group_sid sd_clean.type = sd.type sd_clean.revision = sd.revision broken = False last_inherited_type = None aces = [] if sd.sacl is not None: aces = sd.sacl.aces for i in range(0, len(aces)): ace = aces[i] if not ace.flags & security.SEC_ACE_FLAG_INHERITED_ACE: sd_clean.sacl_add(ace) continue t = self.ace_get_effective_inherited_type(ace) if t is None: continue if last_inherited_type is not None: if t != last_inherited_type: # if it inherited from more than # one type it's very likely to be broken # # If not the recalculation will calculate # the same result. broken = True continue last_inherited_type = t aces = [] if sd.dacl is not None: aces = sd.dacl.aces for i in range(0, len(aces)): ace = aces[i] if not ace.flags & security.SEC_ACE_FLAG_INHERITED_ACE: sd_clean.dacl_add(ace) continue t = self.ace_get_effective_inherited_type(ace) if t is None: continue if last_inherited_type is not None: if t != last_inherited_type: # if it inherited from more than # one type it's very likely to be broken # # If not the recalculation will calculate # the same result. broken = True continue last_inherited_type = t if broken: return (sd_clean, sd) if last_inherited_type is None: # ok return (sd, None) cls = None try: cls = obj["objectClass"][-1] except KeyError, e: pass if cls is None: res = self.samdb.search(base=dn, scope=ldb.SCOPE_BASE, attrs=["isDeleted", "objectClass"], controls=["show_recycled:1"]) o = res[0] is_deleted = 'isDeleted' in o and o['isDeleted'][0].upper() == 'TRUE' if is_deleted: # we don't fix deleted objects return (sd, None) cls = o["objectClass"][-1] t = self.lookup_class_schemaIDGUID(cls) if t != last_inherited_type: # broken return (sd_clean, sd) # ok return (sd, None) def err_wrong_sd(self, dn, sd, sd_broken): '''re-write the SD due to incorrect inherited ACEs''' sd_attr = "nTSecurityDescriptor" sd_val = ndr_pack(sd) sd_flags = security.SECINFO_DACL | security.SECINFO_SACL if not self.confirm_all('Fix %s on %s?' % (sd_attr, dn), 'fix_ntsecuritydescriptor'): self.report('Not fixing %s on %s\n' % (sd_attr, dn)) return nmsg = ldb.Message() nmsg.dn = dn nmsg[sd_attr] = ldb.MessageElement(sd_val, ldb.FLAG_MOD_REPLACE, sd_attr) if self.do_modify(nmsg, ["sd_flags:1:%d" % sd_flags], "Failed to fix attribute %s" % sd_attr): self.report("Fixed attribute '%s' of '%s'\n" % (sd_attr, dn)) def err_wrong_default_sd(self, dn, sd, sd_old, diff): '''re-write the SD due to not matching the default (optional mode for fixing an incorrect provision)''' sd_attr = "nTSecurityDescriptor" sd_val = ndr_pack(sd) sd_old_val = ndr_pack(sd_old) sd_flags = security.SECINFO_DACL | security.SECINFO_SACL if sd.owner_sid is not None: sd_flags |= security.SECINFO_OWNER if sd.group_sid is not None: sd_flags |= security.SECINFO_GROUP if not self.confirm_all('Reset %s on %s back to provision default?\n%s' % (sd_attr, dn, diff), 'reset_all_well_known_acls'): self.report('Not resetting %s on %s\n' % (sd_attr, dn)) return m = ldb.Message() m.dn = dn m[sd_attr] = ldb.MessageElement(sd_val, ldb.FLAG_MOD_REPLACE, sd_attr) if self.do_modify(m, ["sd_flags:1:%d" % sd_flags], "Failed to reset attribute %s" % sd_attr): self.report("Fixed attribute '%s' of '%s'\n" % (sd_attr, dn)) def err_missing_sd_owner(self, dn, sd): '''re-write the SD due to a missing owner or group''' sd_attr = "nTSecurityDescriptor" sd_val = ndr_pack(sd) sd_flags = security.SECINFO_OWNER | security.SECINFO_GROUP if not self.confirm_all('Fix missing owner or group in %s on %s?' % (sd_attr, dn), 'fix_ntsecuritydescriptor_owner_group'): self.report('Not fixing missing owner or group %s on %s\n' % (sd_attr, dn)) return nmsg = ldb.Message() nmsg.dn = dn nmsg[sd_attr] = ldb.MessageElement(sd_val, ldb.FLAG_MOD_REPLACE, sd_attr) # By setting the session_info to admin_session_info and # setting the security.SECINFO_OWNER | security.SECINFO_GROUP # flags we cause the descriptor module to set the correct # owner and group on the SD, replacing the None/NULL values # for owner_sid and group_sid currently present. # # The admin_session_info matches that used in provision, and # is the best guess we can make for an existing object that # hasn't had something specifically set. # # This is important for the dns related naming contexts. self.samdb.set_session_info(self.admin_session_info) if self.do_modify(nmsg, ["sd_flags:1:%d" % sd_flags], "Failed to fix metadata for attribute %s" % sd_attr): self.report("Fixed attribute '%s' of '%s'\n" % (sd_attr, dn)) self.samdb.set_session_info(self.system_session_info) def has_replmetadata_zero_invocationid(self, dn, repl_meta_data): repl = ndr_unpack(drsblobs.replPropertyMetaDataBlob, str(repl_meta_data)) ctr = repl.ctr found = False for o in ctr.array: # Search for a zero invocationID if o.originating_invocation_id != misc.GUID("00000000-0000-0000-0000-000000000000"): continue found = True self.report('''ERROR: on replPropertyMetaData of %s, the instanceType on attribute 0x%08x, version %d changed at %s is 00000000-0000-0000-0000-000000000000, but should be non-zero. Proposed fix is to set to our invocationID (%s).''' % (dn, o.attid, o.version, time.ctime(samba.nttime2unix(o.originating_change_time)), self.samdb.get_invocation_id())) return found def err_replmetadata_zero_invocationid(self, dn, attr, repl_meta_data): repl = ndr_unpack(drsblobs.replPropertyMetaDataBlob, str(repl_meta_data)) ctr = repl.ctr now = samba.unix2nttime(int(time.time())) found = False for o in ctr.array: # Search for a zero invocationID if o.originating_invocation_id != misc.GUID("00000000-0000-0000-0000-000000000000"): continue found = True seq = self.samdb.sequence_number(ldb.SEQ_NEXT) o.version = o.version + 1 o.originating_change_time = now o.originating_invocation_id = misc.GUID(self.samdb.get_invocation_id()) o.originating_usn = seq o.local_usn = seq if found: replBlob = ndr_pack(repl) msg = ldb.Message() msg.dn = dn if not self.confirm_all('Fix %s on %s by setting originating_invocation_id on some elements to our invocationID %s?' % (attr, dn, self.samdb.get_invocation_id()), 'fix_replmetadata_zero_invocationid'): self.report('Not fixing %s on %s\n' % (attr, dn)) return nmsg = ldb.Message() nmsg.dn = dn nmsg[attr] = ldb.MessageElement(replBlob, ldb.FLAG_MOD_REPLACE, attr) if self.do_modify(nmsg, ["local_oid:1.3.6.1.4.1.7165.4.3.14:0"], "Failed to fix attribute %s" % attr): self.report("Fixed attribute '%s' of '%s'\n" % (attr, dn)) def is_deleted_deleted_objects(self, obj): faulty = False if "description" not in obj: self.report("ERROR: description not present on Deleted Objects container %s" % obj.dn) faulty = True if "showInAdvancedViewOnly" not in obj: self.report("ERROR: showInAdvancedViewOnly not present on Deleted Objects container %s" % obj.dn) faulty = True if "objectCategory" not in obj: self.report("ERROR: objectCategory not present on Deleted Objects container %s" % obj.dn) faulty = True if "isCriticalSystemObject" not in obj: self.report("ERROR: isCriticalSystemObject not present on Deleted Objects container %s" % obj.dn) faulty = True if "isRecycled" in obj: self.report("ERROR: isRecycled present on Deleted Objects container %s" % obj.dn) faulty = True return faulty def err_deleted_deleted_objects(self, obj): nmsg = ldb.Message() nmsg.dn = dn = obj.dn if "description" not in obj: nmsg["description"] = ldb.MessageElement("Container for deleted objects", ldb.FLAG_MOD_REPLACE, "description") if "showInAdvancedViewOnly" not in obj: nmsg["showInAdvancedViewOnly"] = ldb.MessageElement("TRUE", ldb.FLAG_MOD_REPLACE, "showInAdvancedViewOnly") if "objectCategory" not in obj: nmsg["objectCategory"] = ldb.MessageElement("CN=Container,%s" % self.schema_dn, ldb.FLAG_MOD_REPLACE, "objectCategory") if "isCriticalSystemObject" not in obj: nmsg["isCriticalSystemObject"] = ldb.MessageElement("TRUE", ldb.FLAG_MOD_REPLACE, "isCriticalSystemObject") if "isRecycled" in obj: nmsg["isRecycled"] = ldb.MessageElement("TRUE", ldb.FLAG_MOD_DELETE, "isRecycled") if not self.confirm_all('Fix Deleted Objects container %s by restoring default attributes?' % (dn), 'fix_deleted_deleted_objects'): self.report('Not fixing missing/incorrect attributes on %s\n' % (dn)) return if self.do_modify(nmsg, ["relax:0"], "Failed to fix Deleted Objects container %s" % dn): self.report("Fixed Deleted Objects container '%s'\n" % (dn)) def is_fsmo_role(self, dn): if dn == self.samdb.domain_dn: return True if dn == self.infrastructure_dn: return True if dn == self.naming_dn: return True if dn == self.schema_dn: return True if dn == self.rid_dn: return True return False def calculate_instancetype(self, dn): instancetype = 0 nc_root = self.samdb.get_nc_root(dn) if dn == nc_root: instancetype |= dsdb.INSTANCE_TYPE_IS_NC_HEAD try: self.samdb.search(base=dn.parent(), scope=ldb.SCOPE_BASE, attrs=[], controls=["show_recycled:1"]) except ldb.LdbError, (enum, estr): if enum != ldb.ERR_NO_SUCH_OBJECT: raise else: instancetype |= dsdb.INSTANCE_TYPE_NC_ABOVE if self.write_ncs is not None and str(nc_root) in self.write_ncs: instancetype |= dsdb.INSTANCE_TYPE_WRITE return instancetype def get_wellknown_sd(self, dn): for [sd_dn, descriptor_fn] in self.wellknown_sds: if dn == sd_dn: domain_sid = security.dom_sid(self.samdb.get_domain_sid()) return ndr_unpack(security.descriptor, descriptor_fn(domain_sid, name_map=self.name_map)) raise KeyError def check_object(self, dn, attrs=['*']): '''check one object''' if self.verbose: self.report("Checking object %s" % dn) if "dn" in map(str.lower, attrs): attrs.append("name") if "distinguishedname" in map(str.lower, attrs): attrs.append("name") if str(dn.get_rdn_name()).lower() in map(str.lower, attrs): attrs.append("name") if 'name' in map(str.lower, attrs): attrs.append(dn.get_rdn_name()) attrs.append("isDeleted") attrs.append("systemFlags") if '*' in attrs: attrs.append("replPropertyMetaData") try: sd_flags = 0 sd_flags |= security.SECINFO_OWNER sd_flags |= security.SECINFO_GROUP sd_flags |= security.SECINFO_DACL sd_flags |= security.SECINFO_SACL res = self.samdb.search(base=dn, scope=ldb.SCOPE_BASE, controls=[ "extended_dn:1:1", "show_recycled:1", "show_deleted:1", "sd_flags:1:%d" % sd_flags, ], attrs=attrs) except ldb.LdbError, (enum, estr): if enum == ldb.ERR_NO_SUCH_OBJECT: if self.in_transaction: self.report("ERROR: Object %s disappeared during check" % dn) return 1 return 0 raise if len(res) != 1: self.report("ERROR: Object %s failed to load during check" % dn) return 1 obj = res[0] error_count = 0 list_attrs_from_md = [] list_attrs_seen = [] got_repl_property_meta_data = False got_objectclass = False nc_dn = self.samdb.get_nc_root(obj.dn) try: deleted_objects_dn = self.samdb.get_wellknown_dn(nc_dn, samba.dsdb.DS_GUID_DELETED_OBJECTS_CONTAINER) except KeyError, e: deleted_objects_dn = ldb.Dn(self.samdb, "CN=Deleted Objects,%s" % nc_dn) object_rdn_attr = None object_rdn_val = None name_val = None isDeleted = False systemFlags = 0 for attrname in obj: if attrname == 'dn': continue if str(attrname).lower() == 'objectclass': got_objectclass = True if str(attrname).lower() == "name": if len(obj[attrname]) != 1: error_count += 1 self.report("ERROR: Not fixing num_values(%d) for '%s' on '%s'" % (len(obj[attrname]), attrname, str(obj.dn))) else: name_val = obj[attrname][0] if str(attrname).lower() == str(obj.dn.get_rdn_name()).lower(): object_rdn_attr = attrname if len(obj[attrname]) != 1: error_count += 1 self.report("ERROR: Not fixing num_values(%d) for '%s' on '%s'" % (len(obj[attrname]), attrname, str(obj.dn))) else: object_rdn_val = obj[attrname][0] if str(attrname).lower() == 'isdeleted': if obj[attrname][0] != "FALSE": isDeleted = True if str(attrname).lower() == 'systemflags': systemFlags = int(obj[attrname][0]) if str(attrname).lower() == 'replpropertymetadata': if self.has_replmetadata_zero_invocationid(dn, obj[attrname]): error_count += 1 self.err_replmetadata_zero_invocationid(dn, attrname, obj[attrname]) # We don't continue, as we may also have other fixes for this attribute # based on what other attributes we see. list_attrs_from_md = self.process_metadata(obj[attrname]) got_repl_property_meta_data = True continue if str(attrname).lower() == 'ntsecuritydescriptor': (sd, sd_broken) = self.process_sd(dn, obj) if sd_broken is not None: self.err_wrong_sd(dn, sd, sd_broken) error_count += 1 continue if sd.owner_sid is None or sd.group_sid is None: self.err_missing_sd_owner(dn, sd) error_count += 1 continue if self.reset_well_known_acls: try: well_known_sd = self.get_wellknown_sd(dn) except KeyError: continue current_sd = ndr_unpack(security.descriptor, str(obj[attrname][0])) diff = get_diff_sds(well_known_sd, current_sd, security.dom_sid(self.samdb.get_domain_sid())) if diff != "": self.err_wrong_default_sd(dn, well_known_sd, current_sd, diff) error_count += 1 continue continue if str(attrname).lower() == 'objectclass': normalised = self.samdb.dsdb_normalise_attributes(self.samdb_schema, attrname, list(obj[attrname])) if list(normalised) != list(obj[attrname]): self.err_normalise_mismatch_replace(dn, attrname, list(obj[attrname])) error_count += 1 continue if str(attrname).lower() == 'userparameters': if len(obj[attrname][0]) == 1 and obj[attrname][0][0] == '\x20': error_count += 1 self.err_short_userParameters(obj, attrname, obj[attrname]) continue elif obj[attrname][0][:16] == '\x20\x00\x20\x00\x20\x00\x20\x00\x20\x00\x20\x00\x20\x00\x20\x00': # This is the correct, normal prefix continue elif obj[attrname][0][:20] == 'IAAgACAAIAAgACAAIAAg': # this is the typical prefix from a windows migration error_count += 1 self.err_base64_userParameters(obj, attrname, obj[attrname]) continue elif obj[attrname][0][1] != '\x00' and obj[attrname][0][3] != '\x00' and obj[attrname][0][5] != '\x00' and obj[attrname][0][7] != '\x00' and obj[attrname][0][9] != '\x00': # This is a prefix that is not in UTF-16 format for the space or munged dialback prefix error_count += 1 self.err_utf8_userParameters(obj, attrname, obj[attrname]) continue elif len(obj[attrname][0]) % 2 != 0: # This is a value that isn't even in length error_count += 1 self.err_odd_userParameters(obj, attrname, obj[attrname]) continue elif obj[attrname][0][1] == '\x00' and obj[attrname][0][2] == '\x00' and obj[attrname][0][3] == '\x00' and obj[attrname][0][4] != '\x00' and obj[attrname][0][5] == '\x00': # This is a prefix that would happen if a SAMR-written value was replicated from a Samba 4.1 server to a working server error_count += 1 self.err_doubled_userParameters(obj, attrname, obj[attrname]) continue # check for empty attributes for val in obj[attrname]: if val == '': self.err_empty_attribute(dn, attrname) error_count += 1 continue # get the syntax oid for the attribute, so we can can have # special handling for some specific attribute types try: syntax_oid = self.samdb_schema.get_syntax_oid_from_lDAPDisplayName(attrname) except Exception, msg: self.err_unknown_attribute(obj, attrname) error_count += 1 continue flag = self.samdb_schema.get_systemFlags_from_lDAPDisplayName(attrname) if (not flag & dsdb.DS_FLAG_ATTR_NOT_REPLICATED and not flag & dsdb.DS_FLAG_ATTR_IS_CONSTRUCTED and not self.samdb_schema.get_linkId_from_lDAPDisplayName(attrname)): list_attrs_seen.append(str(attrname).lower()) if syntax_oid in [ dsdb.DSDB_SYNTAX_BINARY_DN, dsdb.DSDB_SYNTAX_OR_NAME, dsdb.DSDB_SYNTAX_STRING_DN, ldb.SYNTAX_DN ]: # it's some form of DN, do specialised checking on those error_count += self.check_dn(obj, attrname, syntax_oid) # check for incorrectly normalised attributes for val in obj[attrname]: normalised = self.samdb.dsdb_normalise_attributes(self.samdb_schema, attrname, [val]) if len(normalised) != 1 or normalised[0] != val: self.err_normalise_mismatch(dn, attrname, obj[attrname]) error_count += 1 break if str(attrname).lower() == "instancetype": calculated_instancetype = self.calculate_instancetype(dn) if len(obj["instanceType"]) != 1 or obj["instanceType"][0] != str(calculated_instancetype): error_count += 1 self.err_wrong_instancetype(obj, calculated_instancetype) if not got_objectclass and ("*" in attrs or "objectclass" in map(str.lower, attrs)): error_count += 1 self.err_missing_objectclass(dn) if ("*" in attrs or "name" in map(str.lower, attrs)): if name_val is None: error_count += 1 self.report("ERROR: Not fixing missing 'name' on '%s'" % (str(obj.dn))) if object_rdn_attr is None: error_count += 1 self.report("ERROR: Not fixing missing '%s' on '%s'" % (obj.dn.get_rdn_name(), str(obj.dn))) if name_val is not None: parent_dn = None if isDeleted: if not (systemFlags & samba.dsdb.SYSTEM_FLAG_DISALLOW_MOVE_ON_DELETE): parent_dn = deleted_objects_dn if parent_dn is None: parent_dn = obj.dn.parent() expected_dn = ldb.Dn(self.samdb, "RDN=RDN,%s" % (parent_dn)) expected_dn.set_component(0, obj.dn.get_rdn_name(), name_val) if obj.dn == deleted_objects_dn: expected_dn = obj.dn if expected_dn != obj.dn: error_count += 1 self.err_wrong_dn(obj, expected_dn, object_rdn_attr, object_rdn_val, name_val) elif obj.dn.get_rdn_value() != object_rdn_val: error_count += 1 self.report("ERROR: Not fixing %s=%r on '%s'" % (object_rdn_attr, object_rdn_val, str(obj.dn))) show_dn = True if got_repl_property_meta_data: if obj.dn == deleted_objects_dn: isDeletedAttId = 131120 # It's 29/12/9999 at 23:59:59 UTC as specified in MS-ADTS 7.1.1.4.2 Deleted Objects Container expectedTimeDo = 2650466015990000000 originating = self.get_originating_time(obj["replPropertyMetaData"], isDeletedAttId) if originating != expectedTimeDo: if self.confirm_all("Fix isDeleted originating_change_time on '%s'" % str(dn), 'fix_time_metadata'): nmsg = ldb.Message() nmsg.dn = dn nmsg["isDeleted"] = ldb.MessageElement("TRUE", ldb.FLAG_MOD_REPLACE, "isDeleted") error_count += 1 self.samdb.modify(nmsg, controls=["provision:0"]) else: self.report("Not fixing isDeleted originating_change_time on '%s'" % str(dn)) for att in list_attrs_seen: if not att in list_attrs_from_md: if show_dn: self.report("On object %s" % dn) show_dn = False error_count += 1 self.report("ERROR: Attribute %s not present in replication metadata" % att) if not self.confirm_all("Fix missing replPropertyMetaData element '%s'" % att, 'fix_all_metadata'): self.report("Not fixing missing replPropertyMetaData element '%s'" % att) continue self.fix_metadata(dn, att) if self.is_fsmo_role(dn): if "fSMORoleOwner" not in obj and ("*" in attrs or "fsmoroleowner" in map(str.lower, attrs)): self.err_no_fsmoRoleOwner(obj) error_count += 1 try: if dn != self.samdb.get_root_basedn(): res = self.samdb.search(base=dn.parent(), scope=ldb.SCOPE_BASE, controls=["show_recycled:1", "show_deleted:1"]) except ldb.LdbError, (enum, estr): if enum == ldb.ERR_NO_SUCH_OBJECT: self.err_missing_parent(obj) error_count += 1 else: raise if dn in self.deleted_objects_containers and '*' in attrs: if self.is_deleted_deleted_objects(obj): self.err_deleted_deleted_objects(obj) error_count += 1 return error_count ################################################################ # check special @ROOTDSE attributes def check_rootdse(self): '''check the @ROOTDSE special object''' dn = ldb.Dn(self.samdb, '@ROOTDSE') if self.verbose: self.report("Checking object %s" % dn) res = self.samdb.search(base=dn, scope=ldb.SCOPE_BASE) if len(res) != 1: self.report("Object %s disappeared during check" % dn) return 1 obj = res[0] error_count = 0 # check that the dsServiceName is in GUID form if not 'dsServiceName' in obj: self.report('ERROR: dsServiceName missing in @ROOTDSE') return error_count+1 if not obj['dsServiceName'][0].startswith('" % guid_str, ldb.FLAG_MOD_REPLACE, 'dsServiceName') if self.do_modify(m, [], "Failed to change dsServiceName to GUID form", validate=False): self.report("Changed dsServiceName to GUID form") return error_count ############################################### # re-index the database def reindex_database(self): '''re-index the whole database''' m = ldb.Message() m.dn = ldb.Dn(self.samdb, "@ATTRIBUTES") m['add'] = ldb.MessageElement('NONE', ldb.FLAG_MOD_ADD, 'force_reindex') m['delete'] = ldb.MessageElement('NONE', ldb.FLAG_MOD_DELETE, 'force_reindex') return self.do_modify(m, [], 're-indexed database', validate=False) ############################################### # reset @MODULES def reset_modules(self): '''reset @MODULES to that needed for current sam.ldb (to read a very old database)''' m = ldb.Message() m.dn = ldb.Dn(self.samdb, "@MODULES") m['@LIST'] = ldb.MessageElement('samba_dsdb', ldb.FLAG_MOD_REPLACE, '@LIST') return self.do_modify(m, [], 'reset @MODULES on database', validate=False)