1 # Samba4 AD database checker
3 # Copyright (C) Andrew Tridgell 2011
4 # Copyright (C) Matthieu Patou <mat@matws.net> 2011
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.
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.
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/>.
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
32 class dbcheck(object):
33 """check a SAM database for errors"""
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):
39 self
.dict_oid_name
= None
40 self
.samdb_schema
= (samdb_schema
or samdb
)
41 self
.verbose
= verbose
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
)
75 res
= samdb
.search(base
="CN=DnsAdmins,CN=Users,%s" % samdb
.domain_dn(), scope
=ldb
.SCOPE_BASE
,
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
:
84 self
.system_session_info
= system_session()
85 self
.admin_session_info
= admin_session(None, samdb
.get_domain_sid())
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"]
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"]
101 def check_database(self
, DN
=None, scope
=ldb
.SCOPE_SUBTREE
, controls
=[], attrs
=['*']):
102 '''perform a database check, returning the number of errors found'''
104 res
= self
.samdb
.search(base
=DN
, scope
=scope
, attrs
=['dn'], controls
=controls
)
105 self
.report('Checking %u objects' % len(res
))
109 error_count
+= self
.check_object(object.dn
, attrs
=attrs
)
112 error_count
+= self
.check_rootdse()
114 if error_count
!= 0 and not self
.fix
:
115 self
.report("Please use --fix to fix these errors")
117 self
.report('Checked %u objects (%u errors)' % (len(res
), error_count
))
120 def report(self
, msg
):
121 '''print a message unless quiet is set'''
125 def confirm(self
, msg
, allow_all
=False, forced
=False):
126 '''confirm a change'''
133 return common
.confirm(msg
, forced
=forced
, allow_all
=allow_all
)
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" '''
143 if getattr(self
, all_attr
) == 'NONE':
145 if getattr(self
, all_attr
) == 'ALL':
149 c
= common
.confirm(msg
, forced
=forced
, allow_all
=True)
151 setattr(self
, all_attr
, 'ALL')
154 setattr(self
, all_attr
, 'NONE')
158 def do_modify(self
, m
, controls
, msg
, validate
=True):
159 '''perform a modify with optional verbose output'''
161 self
.report(self
.samdb
.write_ldif(m
, ldb
.CHANGETYPE_MODIFY
))
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
))
170 def do_rename(self
, from_dn
, to_rdn
, to_base
, controls
, msg
):
171 '''perform a modify with optional verbose output'''
173 self
.report("""dn: %s
177 newSuperior: %s""" % (str(from_dn
), str(to_rdn
), str(to_base
)))
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
))
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
)
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
)
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
))
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
)
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
)
224 m
['normv_%u' % i
] = ldb
.MessageElement(nval
, ldb
.FLAG_MOD_ADD
,
227 if self
.do_modify(m
, ["relax:0", "show_recycled:1"],
228 "Failed to normalise attribute %s" % attrname
,
230 self
.report("Normalised attribute %s" % attrname
)
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
:
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
)
245 m
[attrname
] = ldb
.MessageElement(normalised
, ldb
.FLAG_MOD_REPLACE
, attrname
)
247 if self
.do_modify(m
, ["relax:0", "show_recycled:1"],
248 "Failed to normalise attribute %s" % attrname
,
250 self
.report("Normalised attribute %s" % attrname
)
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:%s:" % dsdb
.DS_GUID_DELETED_OBJECTS_CONTAINER
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")
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
)
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")
277 self
.err_deleted_dn(dn
, attrname
, val
, dsdb_dn
, dsdb_dn
)
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"]
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
)
291 self
.report("unable to find object for DN %s" % dsdb_dn
.dn
)
292 self
.err_missing_dn_GUID(dn
, attrname
, val
, dsdb_dn
)
294 dsdb_dn
.dn
= res
[0].dn
296 if not self
.confirm_all('Change DN to %s?' % str(dsdb_dn
), 'fix_all_DN_GUIDs'):
297 self
.report("Not fixing %s" % errstr
)
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
)
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
))
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"]
313 if not self
.confirm_all('Change DN to %s?' % str(dsdb_dn
), 'fix_all_binary_dn'):
314 self
.report("Not fixing %s" % errstr
)
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
)
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
))
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
330 if not self
.confirm_all('Change DN to %s?' % str(dsdb_dn
), 'fix_all_target_mismatch'):
331 self
.report("Not fixing %s" % errstr
)
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
))
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
)
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
))
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
)
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
))
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
)
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
))
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
)
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
))
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"])
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
))
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
))
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
))
419 keep_transaction
= True
420 self
.samdb
.transaction_start()
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
))
432 m
['lastKnownParent'] = ldb
.MessageElement(str(obj
.dn
.parent()), ldb
.FLAG_MOD_REPLACE
, 'lastKnownParent')
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
439 self
.samdb
.transaction_cancel()
443 self
.samdb
.transaction_commit()
445 self
.samdb
.transaction_cancel()
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
))
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
))
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")
474 def check_dn(self
, obj
, attrname
, syntax_oid
):
475 '''check a DN attribute for correctness'''
477 for val
in obj
[attrname
]:
478 dsdb_dn
= dsdb_Dn(self
.samdb
, val
, syntax_oid
)
480 # all DNs should have a GUID component
481 guid
= dsdb_dn
.dn
.get_extended_component("GUID")
484 self
.err_incorrect_dn_GUID(obj
.dn
, attrname
, val
, dsdb_dn
,
488 guidstr
= str(misc
.GUID(guid
))
490 attrs
= ['isDeleted']
492 if (str(attrname
).lower() == 'msds-hasinstantiatedncs') and (obj
.dn
== self
.ntds_dsa
):
493 fixing_msDS_HasInstantiatedNCs
= True
494 attrs
.append("instanceType")
496 fixing_msDS_HasInstantiatedNCs
= False
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
)
503 # check its the right GUID
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
):
509 self
.err_incorrect_dn_GUID(obj
.dn
, attrname
, val
, dsdb_dn
, "incorrect GUID")
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])
516 if str(dsdb_dn
) != val
:
518 self
.err_incorrect_binary_dn(obj
.dn
, attrname
, val
, dsdb_dn
, "incorrect instanceType part of Binary DN")
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'
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
):
529 self
.err_deleted_dn(obj
.dn
, attrname
, val
, dsdb_dn
, res
[0].dn
)
532 # check the DN matches in string form
533 if res
[0].dn
.extended_str() != dsdb_dn
.dn
.extended_str():
535 self
.err_dn_target_mismatch(obj
.dn
, attrname
, val
, dsdb_dn
,
536 res
[0].dn
, "incorrect string version of DN")
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
)
547 # check the reverse_link is correct if there should be one
548 if reverse_link_name
is not None:
550 if reverse_link_name
in res
[0]:
551 for v
in res
[0][reverse_link_name
]:
552 if v
== obj
.dn
.extended_str():
557 self
.err_orphaned_backlink(obj
, attrname
, val
, reverse_link_name
, dsdb_dn
.dn
)
559 self
.err_missing_backlink(obj
, attrname
, val
, reverse_link_name
, dsdb_dn
.dn
)
565 def get_originating_time(self
, val
, attid
):
566 '''Read metadata properties and return the originating time for
569 :return: the originating time or 0 if not found
572 repl
= ndr_unpack(drsblobs
.replPropertyMetaDataBlob
, str(val
))
575 for o
in repl
.ctr
.array
:
577 return o
.originating_change_time
581 def process_metadata(self
, val
):
582 '''Read metadata properties and list attributes in it'''
586 repl
= ndr_unpack(drsblobs
.replPropertyMetaDataBlob
, str(val
))
589 for o
in repl
.ctr
.array
:
590 att
= self
.samdb_schema
.get_lDAPDisplayName_by_attid(o
.attid
)
591 list_att
.append(att
.lower())
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"])
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
)
609 def ace_get_effective_inherited_type(self
, ace
):
610 if ace
.flags
& security
.SEC_ACE_FLAG_INHERIT_ONLY
:
614 if ace
.type == security
.SEC_ACE_TYPE_ACCESS_ALLOWED_OBJECT
:
616 elif ace
.type == security
.SEC_ACE_TYPE_ACCESS_DENIED_OBJECT
:
618 elif ace
.type == security
.SEC_ACE_TYPE_SYSTEM_AUDIT_OBJECT
:
620 elif ace
.type == security
.SEC_ACE_TYPE_SYSTEM_ALARM_OBJECT
:
626 if not ace
.object.flags
& security
.SEC_ACE_INHERITED_OBJECT_TYPE_PRESENT
:
629 return str(ace
.object.inherited_type
)
631 def lookup_class_schemaIDGUID(self
, cls
):
632 if cls
in self
.class_schemaIDGUID
:
633 return self
.class_schemaIDGUID
[cls
]
635 flt
= "(&(ldapDisplayName=%s)(objectClass=classSchema))" % cls
636 res
= self
.samdb
.search(base
=self
.schema_dn
,
638 attrs
=["schemaIDGUID"])
639 t
= str(ndr_unpack(misc
.GUID
, res
[0]["schemaIDGUID"][0]))
641 self
.class_schemaIDGUID
[cls
] = t
644 def process_sd(self
, dn
, obj
):
645 sd_attr
= "nTSecurityDescriptor"
646 sd_val
= obj
[sd_attr
]
648 sd
= ndr_unpack(security
.descriptor
, str(sd_val
))
650 is_deleted
= 'isDeleted' in obj
and obj
['isDeleted'][0].upper() == 'TRUE'
652 # we don't fix deleted objects
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
662 last_inherited_type
= None
665 if sd
.sacl
is not None:
667 for i
in range(0, len(aces
)):
670 if not ace
.flags
& security
.SEC_ACE_FLAG_INHERITED_ACE
:
671 sd_clean
.sacl_add(ace
)
674 t
= self
.ace_get_effective_inherited_type(ace
)
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
683 # If not the recalculation will calculate
688 last_inherited_type
= t
691 if sd
.dacl
is not None:
693 for i
in range(0, len(aces
)):
696 if not ace
.flags
& security
.SEC_ACE_FLAG_INHERITED_ACE
:
697 sd_clean
.dacl_add(ace
)
700 t
= self
.ace_get_effective_inherited_type(ace
)
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
709 # If not the recalculation will calculate
714 last_inherited_type
= t
717 return (sd_clean
, sd
)
719 if last_inherited_type
is None:
725 cls
= obj
["objectClass"][-1]
730 res
= self
.samdb
.search(base
=dn
, scope
=ldb
.SCOPE_BASE
,
731 attrs
=["isDeleted", "objectClass"],
732 controls
=["show_recycled:1"])
734 is_deleted
= 'isDeleted' in o
and o
['isDeleted'][0].upper() == 'TRUE'
736 # we don't fix deleted objects
738 cls
= o
["objectClass"][-1]
740 t
= self
.lookup_class_schemaIDGUID(cls
)
742 if t
!= last_inherited_type
:
744 return (sd_clean
, sd
)
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
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
))
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
))
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
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
))
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
))
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
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
))
800 nmsg
[sd_attr
] = ldb
.MessageElement(sd_val
, ldb
.FLAG_MOD_REPLACE
, sd_attr
)
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.
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.
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
)
819 def is_fsmo_role(self
, dn
):
820 if dn
== self
.samdb
.domain_dn
:
822 if dn
== self
.infrastructure_dn
:
824 if dn
== self
.naming_dn
:
826 if dn
== self
.schema_dn
:
828 if dn
== self
.rid_dn
:
833 def calculate_instancetype(self
, dn
):
835 nc_root
= self
.samdb
.get_nc_root(dn
)
837 instancetype |
= dsdb
.INSTANCE_TYPE_IS_NC_HEAD
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
:
844 instancetype |
= dsdb
.INSTANCE_TYPE_NC_ABOVE
846 if self
.write_ncs
is not None and str(nc_root
) in self
.write_ncs
:
847 instancetype |
= dsdb
.INSTANCE_TYPE_WRITE
851 def get_wellknown_sd(self
, dn
):
852 for [sd_dn
, descriptor_fn
] in self
.wellknown_sds
:
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
))
861 def check_object(self
, dn
, attrs
=['*']):
862 '''check one object'''
864 self
.report("Checking object %s" % dn
)
866 attrs
.append("replPropertyMetaData")
870 sd_flags |
= security
.SECINFO_OWNER
871 sd_flags |
= security
.SECINFO_GROUP
872 sd_flags |
= security
.SECINFO_DACL
873 sd_flags |
= security
.SECINFO_SACL
875 res
= self
.samdb
.search(base
=dn
, scope
=ldb
.SCOPE_BASE
,
880 "sd_flags:1:%d" % sd_flags
,
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
)
891 self
.report("ERROR: Object %s failed to load during check" % dn
)
895 list_attrs_from_md
= []
897 got_repl_property_meta_data
= False
903 if str(attrname
).lower() == 'replpropertymetadata':
904 list_attrs_from_md
= self
.process_metadata(obj
[attrname
])
905 got_repl_property_meta_data
= True
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
)
915 if sd
.owner_sid
is None or sd
.group_sid
is None:
916 self
.err_missing_sd_owner(dn
, sd
)
920 if self
.reset_well_known_acls
:
922 well_known_sd
= self
.get_wellknown_sd(dn
)
926 current_sd
= ndr_unpack(security
.descriptor
,
927 str(obj
[attrname
][0]))
929 diff
= get_diff_sds(well_known_sd
, current_sd
, security
.dom_sid(self
.samdb
.get_domain_sid()))
931 self
.err_wrong_default_sd(dn
, well_known_sd
, current_sd
, diff
)
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
]))
943 # check for empty attributes
944 for val
in obj
[attrname
]:
946 self
.err_empty_attribute(dn
, attrname
)
950 # get the syntax oid for the attribute, so we can can have
951 # special handling for some specific attribute types
953 syntax_oid
= self
.samdb_schema
.get_syntax_oid_from_lDAPDisplayName(attrname
)
954 except Exception, msg
:
955 self
.err_unknown_attribute(obj
, attrname
)
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())
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
)
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
])
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
)
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
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'):
996 nmsg
["isDeleted"] = ldb
.MessageElement("TRUE", ldb
.FLAG_MOD_REPLACE
, "isDeleted")
998 self
.samdb
.modify(nmsg
, controls
=["provision:0"])
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
:
1005 self
.report("On object %s" % dn
)
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
)
1012 self
.fix_metadata(dn
, att
)
1014 if self
.is_fsmo_role(dn
):
1015 if "fSMORoleOwner" not in obj
:
1016 self
.err_no_fsmoRoleOwner(obj
)
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
)
1032 ################################################################
1033 # check special @ROOTDSE attributes
1034 def check_rootdse(self
):
1035 '''check the @ROOTDSE special object'''
1036 dn
= ldb
.Dn(self
.samdb
, '@ROOTDSE')
1038 self
.report("Checking object %s" % dn
)
1039 res
= self
.samdb
.search(base
=dn
, scope
=ldb
.SCOPE_BASE
)
1041 self
.report("Object %s disappeared during check" % dn
)
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
1051 if not obj
['dsServiceName'][0].startswith('<GUID='):
1052 self
.report('ERROR: dsServiceName not in GUID form in @ROOTDSE')
1054 if not self
.confirm('Change dsServiceName to GUID form?'):
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]))
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")
1068 ###############################################
1069 # re-index the database
1070 def reindex_database(self
):
1071 '''re-index the whole database'''
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)
1078 ###############################################
1080 def reset_modules(self
):
1081 '''reset @MODULES to that needed for current sam.ldb (to read a very old database)'''
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)