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
30 class dbcheck(object):
31 """check a SAM database for errors"""
33 def __init__(self
, samdb
, samdb_schema
=None, verbose
=False, fix
=False,
34 yes
=False, quiet
=False, in_transaction
=False):
36 self
.dict_oid_name
= None
37 self
.samdb_schema
= (samdb_schema
or samdb
)
38 self
.verbose
= verbose
42 self
.remove_all_unknown_attributes
= False
43 self
.remove_all_empty_attributes
= False
44 self
.fix_all_normalisation
= False
45 self
.fix_all_DN_GUIDs
= False
46 self
.fix_all_binary_dn
= False
47 self
.remove_all_deleted_DN_links
= False
48 self
.fix_all_target_mismatch
= False
49 self
.fix_all_metadata
= False
50 self
.fix_time_metadata
= False
51 self
.fix_all_missing_backlinks
= False
52 self
.fix_all_orphaned_backlinks
= False
53 self
.fix_rmd_flags
= False
54 self
.fix_ntsecuritydescriptor
= False
55 self
.seize_fsmo_role
= False
56 self
.move_to_lost_and_found
= False
57 self
.fix_instancetype
= False
58 self
.in_transaction
= in_transaction
59 self
.infrastructure_dn
= ldb
.Dn(samdb
, "CN=Infrastructure," + samdb
.domain_dn())
60 self
.naming_dn
= ldb
.Dn(samdb
, "CN=Partitions,%s" % samdb
.get_config_basedn())
61 self
.schema_dn
= samdb
.get_schema_basedn()
62 self
.rid_dn
= ldb
.Dn(samdb
, "CN=RID Manager$,CN=System," + samdb
.domain_dn())
63 self
.ntds_dsa
= ldb
.Dn(samdb
, samdb
.get_dsServiceName())
64 self
.class_schemaIDGUID
= {}
66 res
= self
.samdb
.search(base
=self
.ntds_dsa
, scope
=ldb
.SCOPE_BASE
, attrs
=['msDS-hasMasterNCs', 'hasMasterNCs'])
67 if "msDS-hasMasterNCs" in res
[0]:
68 self
.write_ncs
= res
[0]["msDS-hasMasterNCs"]
70 # If the Forest Level is less than 2003 then there is no
71 # msDS-hasMasterNCs, so we fall back to hasMasterNCs
72 # no need to merge as all the NCs that are in hasMasterNCs must
73 # also be in msDS-hasMasterNCs (but not the opposite)
74 if "hasMasterNCs" in res
[0]:
75 self
.write_ncs
= res
[0]["hasMasterNCs"]
80 def check_database(self
, DN
=None, scope
=ldb
.SCOPE_SUBTREE
, controls
=[], attrs
=['*']):
81 '''perform a database check, returning the number of errors found'''
83 res
= self
.samdb
.search(base
=DN
, scope
=scope
, attrs
=['dn'], controls
=controls
)
84 self
.report('Checking %u objects' % len(res
))
88 error_count
+= self
.check_object(object.dn
, attrs
=attrs
)
91 error_count
+= self
.check_rootdse()
93 if error_count
!= 0 and not self
.fix
:
94 self
.report("Please use --fix to fix these errors")
96 self
.report('Checked %u objects (%u errors)' % (len(res
), error_count
))
99 def report(self
, msg
):
100 '''print a message unless quiet is set'''
104 def confirm(self
, msg
, allow_all
=False, forced
=False):
105 '''confirm a change'''
112 return common
.confirm(msg
, forced
=forced
, allow_all
=allow_all
)
114 ################################################################
115 # a local confirm function with support for 'all'
116 def confirm_all(self
, msg
, all_attr
):
117 '''confirm a change with support for "all" '''
122 if getattr(self
, all_attr
) == 'NONE':
124 if getattr(self
, all_attr
) == 'ALL':
128 c
= common
.confirm(msg
, forced
=forced
, allow_all
=True)
130 setattr(self
, all_attr
, 'ALL')
133 setattr(self
, all_attr
, 'NONE')
137 def do_modify(self
, m
, controls
, msg
, validate
=True):
138 '''perform a modify with optional verbose output'''
140 self
.report(self
.samdb
.write_ldif(m
, ldb
.CHANGETYPE_MODIFY
))
142 controls
= controls
+ ["local_oid:%s:0" % dsdb
.DSDB_CONTROL_DBCHECK
]
143 self
.samdb
.modify(m
, controls
=controls
, validate
=validate
)
144 except Exception, err
:
145 self
.report("%s : %s" % (msg
, err
))
149 def do_rename(self
, from_dn
, to_rdn
, to_base
, controls
, msg
):
150 '''perform a modify with optional verbose output'''
152 self
.report("""dn: %s
156 newSuperior: %s""" % (str(from_dn
), str(to_rdn
), str(to_base
)))
158 to_dn
= to_rdn
+ to_base
159 controls
= controls
+ ["local_oid:%s:0" % dsdb
.DSDB_CONTROL_DBCHECK
]
160 self
.samdb
.rename(from_dn
, to_dn
, controls
=controls
)
161 except Exception, err
:
162 self
.report("%s : %s" % (msg
, err
))
166 def err_empty_attribute(self
, dn
, attrname
):
167 '''fix empty attributes'''
168 self
.report("ERROR: Empty attribute %s in %s" % (attrname
, dn
))
169 if not self
.confirm_all('Remove empty attribute %s from %s?' % (attrname
, dn
), 'remove_all_empty_attributes'):
170 self
.report("Not fixing empty attribute %s" % attrname
)
175 m
[attrname
] = ldb
.MessageElement('', ldb
.FLAG_MOD_DELETE
, attrname
)
176 if self
.do_modify(m
, ["relax:0", "show_recycled:1"],
177 "Failed to remove empty attribute %s" % attrname
, validate
=False):
178 self
.report("Removed empty attribute %s" % attrname
)
180 def err_normalise_mismatch(self
, dn
, attrname
, values
):
181 '''fix attribute normalisation errors'''
182 self
.report("ERROR: Normalisation error for attribute %s in %s" % (attrname
, dn
))
185 normalised
= self
.samdb
.dsdb_normalise_attributes(
186 self
.samdb_schema
, attrname
, [val
])
187 if len(normalised
) != 1:
188 self
.report("Unable to normalise value '%s'" % val
)
189 mod_list
.append((val
, ''))
190 elif (normalised
[0] != val
):
191 self
.report("value '%s' should be '%s'" % (val
, normalised
[0]))
192 mod_list
.append((val
, normalised
[0]))
193 if not self
.confirm_all('Fix normalisation for %s from %s?' % (attrname
, dn
), 'fix_all_normalisation'):
194 self
.report("Not fixing attribute %s" % attrname
)
199 for i
in range(0, len(mod_list
)):
200 (val
, nval
) = mod_list
[i
]
201 m
['value_%u' % i
] = ldb
.MessageElement(val
, ldb
.FLAG_MOD_DELETE
, attrname
)
203 m
['normv_%u' % i
] = ldb
.MessageElement(nval
, ldb
.FLAG_MOD_ADD
,
206 if self
.do_modify(m
, ["relax:0", "show_recycled:1"],
207 "Failed to normalise attribute %s" % attrname
,
209 self
.report("Normalised attribute %s" % attrname
)
211 def err_normalise_mismatch_replace(self
, dn
, attrname
, values
):
212 '''fix attribute normalisation errors'''
213 normalised
= self
.samdb
.dsdb_normalise_attributes(self
.samdb_schema
, attrname
, values
)
214 self
.report("ERROR: Normalisation error for attribute '%s' in '%s'" % (attrname
, dn
))
215 self
.report("Values/Order of values do/does not match: %s/%s!" % (values
, list(normalised
)))
216 if list(normalised
) == values
:
218 if not self
.confirm_all("Fix normalisation for '%s' from '%s'?" % (attrname
, dn
), 'fix_all_normalisation'):
219 self
.report("Not fixing attribute '%s'" % attrname
)
224 m
[attrname
] = ldb
.MessageElement(normalised
, ldb
.FLAG_MOD_REPLACE
, attrname
)
226 if self
.do_modify(m
, ["relax:0", "show_recycled:1"],
227 "Failed to normalise attribute %s" % attrname
,
229 self
.report("Normalised attribute %s" % attrname
)
231 def is_deleted_objects_dn(self
, dsdb_dn
):
232 '''see if a dsdb_Dn is the special Deleted Objects DN'''
233 return dsdb_dn
.prefix
== "B:32:18E2EA80684F11D2B9AA00C04F79F805:"
235 def err_deleted_dn(self
, dn
, attrname
, val
, dsdb_dn
, correct_dn
):
236 """handle a DN pointing to a deleted object"""
237 self
.report("ERROR: target DN is deleted for %s in object %s - %s" % (attrname
, dn
, val
))
238 self
.report("Target GUID points at deleted DN %s" % correct_dn
)
239 if not self
.confirm_all('Remove DN link?', 'remove_all_deleted_DN_links'):
240 self
.report("Not removing")
244 m
['old_value'] = ldb
.MessageElement(val
, ldb
.FLAG_MOD_DELETE
, attrname
)
245 if self
.do_modify(m
, ["show_recycled:1", "local_oid:%s:0" % dsdb
.DSDB_CONTROL_DBCHECK
],
246 "Failed to remove deleted DN attribute %s" % attrname
):
247 self
.report("Removed deleted DN on attribute %s" % attrname
)
249 def err_missing_dn_GUID(self
, dn
, attrname
, val
, dsdb_dn
):
250 """handle a missing target DN (both GUID and DN string form are missing)"""
251 # check if its a backlink
252 linkID
= self
.samdb_schema
.get_linkId_from_lDAPDisplayName(attrname
)
253 if (linkID
& 1 == 0) and str(dsdb_dn
).find('DEL\\0A') == -1:
254 self
.report("Not removing dangling forward link")
256 self
.err_deleted_dn(dn
, attrname
, val
, dsdb_dn
, dsdb_dn
)
258 def err_incorrect_dn_GUID(self
, dn
, attrname
, val
, dsdb_dn
, errstr
):
259 """handle a missing GUID extended DN component"""
260 self
.report("ERROR: %s component for %s in object %s - %s" % (errstr
, attrname
, dn
, val
))
261 controls
=["extended_dn:1:1", "show_recycled:1"]
263 res
= self
.samdb
.search(base
=str(dsdb_dn
.dn
), scope
=ldb
.SCOPE_BASE
,
264 attrs
=[], controls
=controls
)
265 except ldb
.LdbError
, (enum
, estr
):
266 self
.report("unable to find object for DN %s - (%s)" % (dsdb_dn
.dn
, estr
))
267 self
.err_missing_dn_GUID(dn
, attrname
, val
, dsdb_dn
)
270 self
.report("unable to find object for DN %s" % dsdb_dn
.dn
)
271 self
.err_missing_dn_GUID(dn
, attrname
, val
, dsdb_dn
)
273 dsdb_dn
.dn
= res
[0].dn
275 if not self
.confirm_all('Change DN to %s?' % str(dsdb_dn
), 'fix_all_DN_GUIDs'):
276 self
.report("Not fixing %s" % errstr
)
280 m
['old_value'] = ldb
.MessageElement(val
, ldb
.FLAG_MOD_DELETE
, attrname
)
281 m
['new_value'] = ldb
.MessageElement(str(dsdb_dn
), ldb
.FLAG_MOD_ADD
, attrname
)
283 if self
.do_modify(m
, ["show_recycled:1"],
284 "Failed to fix %s on attribute %s" % (errstr
, attrname
)):
285 self
.report("Fixed %s on attribute %s" % (errstr
, attrname
))
287 def err_incorrect_binary_dn(self
, dn
, attrname
, val
, dsdb_dn
, errstr
):
288 """handle an incorrect binary DN component"""
289 self
.report("ERROR: %s binary component for %s in object %s - %s" % (errstr
, attrname
, dn
, val
))
290 controls
=["extended_dn:1:1", "show_recycled:1"]
292 if not self
.confirm_all('Change DN to %s?' % str(dsdb_dn
), 'fix_all_binary_dn'):
293 self
.report("Not fixing %s" % errstr
)
297 m
['old_value'] = ldb
.MessageElement(val
, ldb
.FLAG_MOD_DELETE
, attrname
)
298 m
['new_value'] = ldb
.MessageElement(str(dsdb_dn
), ldb
.FLAG_MOD_ADD
, attrname
)
300 if self
.do_modify(m
, ["show_recycled:1"],
301 "Failed to fix %s on attribute %s" % (errstr
, attrname
)):
302 self
.report("Fixed %s on attribute %s" % (errstr
, attrname
))
304 def err_dn_target_mismatch(self
, dn
, attrname
, val
, dsdb_dn
, correct_dn
, errstr
):
305 """handle a DN string being incorrect"""
306 self
.report("ERROR: incorrect DN string component for %s in object %s - %s" % (attrname
, dn
, val
))
307 dsdb_dn
.dn
= correct_dn
309 if not self
.confirm_all('Change DN to %s?' % str(dsdb_dn
), 'fix_all_target_mismatch'):
310 self
.report("Not fixing %s" % errstr
)
314 m
['old_value'] = ldb
.MessageElement(val
, ldb
.FLAG_MOD_DELETE
, attrname
)
315 m
['new_value'] = ldb
.MessageElement(str(dsdb_dn
), ldb
.FLAG_MOD_ADD
, attrname
)
316 if self
.do_modify(m
, ["show_recycled:1"],
317 "Failed to fix incorrect DN string on attribute %s" % attrname
):
318 self
.report("Fixed incorrect DN string on attribute %s" % (attrname
))
320 def err_unknown_attribute(self
, obj
, attrname
):
321 '''handle an unknown attribute error'''
322 self
.report("ERROR: unknown attribute '%s' in %s" % (attrname
, obj
.dn
))
323 if not self
.confirm_all('Remove unknown attribute %s' % attrname
, 'remove_all_unknown_attributes'):
324 self
.report("Not removing %s" % attrname
)
328 m
['old_value'] = ldb
.MessageElement([], ldb
.FLAG_MOD_DELETE
, attrname
)
329 if self
.do_modify(m
, ["relax:0", "show_recycled:1"],
330 "Failed to remove unknown attribute %s" % attrname
):
331 self
.report("Removed unknown attribute %s" % (attrname
))
333 def err_missing_backlink(self
, obj
, attrname
, val
, backlink_name
, target_dn
):
334 '''handle a missing backlink value'''
335 self
.report("ERROR: missing backlink attribute '%s' in %s for link %s in %s" % (backlink_name
, target_dn
, attrname
, obj
.dn
))
336 if not self
.confirm_all('Fix missing backlink %s' % backlink_name
, 'fix_all_missing_backlinks'):
337 self
.report("Not fixing missing backlink %s" % backlink_name
)
341 m
['old_value'] = ldb
.MessageElement(val
, ldb
.FLAG_MOD_DELETE
, attrname
)
342 m
['new_value'] = ldb
.MessageElement(val
, ldb
.FLAG_MOD_ADD
, attrname
)
343 if self
.do_modify(m
, ["show_recycled:1"],
344 "Failed to fix missing backlink %s" % backlink_name
):
345 self
.report("Fixed missing backlink %s" % (backlink_name
))
347 def err_incorrect_rmd_flags(self
, obj
, attrname
, revealed_dn
):
348 '''handle a incorrect RMD_FLAGS value'''
349 rmd_flags
= int(revealed_dn
.dn
.get_extended_component("RMD_FLAGS"))
350 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()))
351 if not self
.confirm_all('Fix incorrect RMD_FLAGS %u' % rmd_flags
, 'fix_rmd_flags'):
352 self
.report("Not fixing incorrect RMD_FLAGS %u" % rmd_flags
)
356 m
['old_value'] = ldb
.MessageElement(str(revealed_dn
), ldb
.FLAG_MOD_DELETE
, attrname
)
357 if self
.do_modify(m
, ["show_recycled:1", "reveal_internals:0", "show_deleted:0"],
358 "Failed to fix incorrect RMD_FLAGS %u" % rmd_flags
):
359 self
.report("Fixed incorrect RMD_FLAGS %u" % (rmd_flags
))
361 def err_orphaned_backlink(self
, obj
, attrname
, val
, link_name
, target_dn
):
362 '''handle a orphaned backlink value'''
363 self
.report("ERROR: orphaned backlink attribute '%s' in %s for link %s in %s" % (attrname
, obj
.dn
, link_name
, target_dn
))
364 if not self
.confirm_all('Remove orphaned backlink %s' % link_name
, 'fix_all_orphaned_backlinks'):
365 self
.report("Not removing orphaned backlink %s" % link_name
)
369 m
['value'] = ldb
.MessageElement(val
, ldb
.FLAG_MOD_DELETE
, attrname
)
370 if self
.do_modify(m
, ["show_recycled:1", "relax:0"],
371 "Failed to fix orphaned backlink %s" % link_name
):
372 self
.report("Fixed orphaned backlink %s" % (link_name
))
374 def err_no_fsmoRoleOwner(self
, obj
):
375 '''handle a missing fSMORoleOwner'''
376 self
.report("ERROR: fSMORoleOwner not found for role %s" % (obj
.dn
))
377 res
= self
.samdb
.search("",
378 scope
=ldb
.SCOPE_BASE
, attrs
=["dsServiceName"])
380 serviceName
= res
[0]["dsServiceName"][0]
381 if not self
.confirm_all('Sieze role %s onto current DC by adding fSMORoleOwner=%s' % (obj
.dn
, serviceName
), 'seize_fsmo_role'):
382 self
.report("Not Siezing role %s onto current DC by adding fSMORoleOwner=%s" % (obj
.dn
, serviceName
))
386 m
['value'] = ldb
.MessageElement(serviceName
, ldb
.FLAG_MOD_ADD
, 'fSMORoleOwner')
387 if self
.do_modify(m
, [],
388 "Failed to sieze role %s onto current DC by adding fSMORoleOwner=%s" % (obj
.dn
, serviceName
)):
389 self
.report("Siezed role %s onto current DC by adding fSMORoleOwner=%s" % (obj
.dn
, serviceName
))
391 def err_missing_parent(self
, obj
):
392 '''handle a missing parent'''
393 self
.report("ERROR: parent object not found for %s" % (obj
.dn
))
394 if not self
.confirm_all('Move object %s into LostAndFound?' % (obj
.dn
), 'move_to_lost_and_found'):
395 self
.report('Not moving object %s into LostAndFound' % (obj
.dn
))
398 keep_transaction
= True
399 self
.samdb
.transaction_start()
401 nc_root
= self
.samdb
.get_nc_root(obj
.dn
);
402 lost_and_found
= self
.samdb
.get_wellknown_dn(nc_root
, dsdb
.DS_GUID_LOSTANDFOUND_CONTAINER
)
403 new_dn
= ldb
.Dn(self
.samdb
, str(obj
.dn
))
404 new_dn
.remove_base_components(len(new_dn
) - 1)
405 if self
.do_rename(obj
.dn
, new_dn
, lost_and_found
, ["show_deleted:0", "relax:0"],
406 "Failed to rename object %s into lostAndFound at %s" % (obj
.dn
, new_dn
+ lost_and_found
)):
407 self
.report("Renamed object %s into lostAndFound at %s" % (obj
.dn
, new_dn
+ lost_and_found
))
411 m
['lastKnownParent'] = ldb
.MessageElement(str(obj
.dn
.parent()), ldb
.FLAG_MOD_REPLACE
, 'lastKnownParent')
413 if self
.do_modify(m
, [],
414 "Failed to set lastKnownParent on lostAndFound object at %s" % (new_dn
+ lost_and_found
)):
415 self
.report("Set lastKnownParent on lostAndFound object at %s" % (new_dn
+ lost_and_found
))
416 keep_transaction
= True
418 self
.samdb
.transaction_cancel()
422 self
.samdb
.transaction_commit()
424 self
.samdb
.transaction_cancel()
427 def err_wrong_instancetype(self
, obj
, calculated_instancetype
):
428 '''handle a wrong instanceType'''
429 self
.report("ERROR: wrong instanceType %s on %s, should be %d" % (obj
["instanceType"], obj
.dn
, calculated_instancetype
))
430 if not self
.confirm_all('Change instanceType from %s to %d on %s?' % (obj
["instanceType"], calculated_instancetype
, obj
.dn
), 'fix_instancetype'):
431 self
.report('Not changing instanceType from %s to %d on %s' % (obj
["instanceType"], calculated_instancetype
, obj
.dn
))
436 m
['value'] = ldb
.MessageElement(str(calculated_instancetype
), ldb
.FLAG_MOD_REPLACE
, 'instanceType')
437 if self
.do_modify(m
, ["local_oid:%s:0" % dsdb
.DSDB_CONTROL_DBCHECK_MODIFY_RO_REPLICA
],
438 "Failed to correct missing instanceType on %s by setting instanceType=%d" % (obj
.dn
, calculated_instancetype
)):
439 self
.report("Corrected instancetype on %s by setting instanceType=%d" % (obj
.dn
, calculated_instancetype
))
441 def find_revealed_link(self
, dn
, attrname
, guid
):
442 '''return a revealed link in an object'''
443 res
= self
.samdb
.search(base
=dn
, scope
=ldb
.SCOPE_BASE
, attrs
=[attrname
],
444 controls
=["show_deleted:0", "extended_dn:0", "reveal_internals:0"])
445 syntax_oid
= self
.samdb_schema
.get_syntax_oid_from_lDAPDisplayName(attrname
)
446 for val
in res
[0][attrname
]:
447 dsdb_dn
= dsdb_Dn(self
.samdb
, val
, syntax_oid
)
448 guid2
= dsdb_dn
.dn
.get_extended_component("GUID")
453 def check_dn(self
, obj
, attrname
, syntax_oid
):
454 '''check a DN attribute for correctness'''
456 for val
in obj
[attrname
]:
457 dsdb_dn
= dsdb_Dn(self
.samdb
, val
, syntax_oid
)
459 # all DNs should have a GUID component
460 guid
= dsdb_dn
.dn
.get_extended_component("GUID")
463 self
.err_incorrect_dn_GUID(obj
.dn
, attrname
, val
, dsdb_dn
,
467 guidstr
= str(misc
.GUID(guid
))
469 attrs
= ['isDeleted']
471 if (str(attrname
).lower() == 'msds-hasinstantiatedncs') and (obj
.dn
== self
.ntds_dsa
):
472 fixing_msDS_HasInstantiatedNCs
= True
473 attrs
.append("instanceType")
475 fixing_msDS_HasInstantiatedNCs
= False
477 linkID
= self
.samdb_schema
.get_linkId_from_lDAPDisplayName(attrname
)
478 reverse_link_name
= self
.samdb_schema
.get_backlink_from_lDAPDisplayName(attrname
)
479 if reverse_link_name
is not None:
480 attrs
.append(reverse_link_name
)
482 # check its the right GUID
484 res
= self
.samdb
.search(base
="<GUID=%s>" % guidstr
, scope
=ldb
.SCOPE_BASE
,
485 attrs
=attrs
, controls
=["extended_dn:1:1", "show_recycled:1"])
486 except ldb
.LdbError
, (enum
, estr
):
488 self
.err_incorrect_dn_GUID(obj
.dn
, attrname
, val
, dsdb_dn
, "incorrect GUID")
491 if fixing_msDS_HasInstantiatedNCs
:
492 dsdb_dn
.prefix
= "B:8:%08X:" % int(res
[0]['instanceType'][0])
493 dsdb_dn
.binary
= "%08X" % int(res
[0]['instanceType'][0])
495 if str(dsdb_dn
) != val
:
497 self
.err_incorrect_binary_dn(obj
.dn
, attrname
, val
, dsdb_dn
, "incorrect instanceType part of Binary DN")
500 # now we have two cases - the source object might or might not be deleted
501 is_deleted
= 'isDeleted' in obj
and obj
['isDeleted'][0].upper() == 'TRUE'
502 target_is_deleted
= 'isDeleted' in res
[0] and res
[0]['isDeleted'][0].upper() == 'TRUE'
504 # the target DN is not allowed to be deleted, unless the target DN is the
505 # special Deleted Objects container
506 if target_is_deleted
and not is_deleted
and not self
.is_deleted_objects_dn(dsdb_dn
):
508 self
.err_deleted_dn(obj
.dn
, attrname
, val
, dsdb_dn
, res
[0].dn
)
511 # check the DN matches in string form
512 if res
[0].dn
.extended_str() != dsdb_dn
.dn
.extended_str():
514 self
.err_dn_target_mismatch(obj
.dn
, attrname
, val
, dsdb_dn
,
515 res
[0].dn
, "incorrect string version of DN")
518 if is_deleted
and not target_is_deleted
and reverse_link_name
is not None:
519 revealed_dn
= self
.find_revealed_link(obj
.dn
, attrname
, guid
)
520 rmd_flags
= revealed_dn
.dn
.get_extended_component("RMD_FLAGS")
521 if rmd_flags
is not None and (int(rmd_flags
) & 1) == 0:
522 # the RMD_FLAGS for this link should be 1, as the target is deleted
523 self
.err_incorrect_rmd_flags(obj
, attrname
, revealed_dn
)
526 # check the reverse_link is correct if there should be one
527 if reverse_link_name
is not None:
529 if reverse_link_name
in res
[0]:
530 for v
in res
[0][reverse_link_name
]:
531 if v
== obj
.dn
.extended_str():
536 self
.err_orphaned_backlink(obj
, attrname
, val
, reverse_link_name
, dsdb_dn
.dn
)
538 self
.err_missing_backlink(obj
, attrname
, val
, reverse_link_name
, dsdb_dn
.dn
)
544 def get_originating_time(self
, val
, attid
):
545 '''Read metadata properties and return the originating time for
548 :return: the originating time or 0 if not found
551 repl
= ndr_unpack(drsblobs
.replPropertyMetaDataBlob
, str(val
))
554 for o
in repl
.ctr
.array
:
556 return o
.originating_change_time
560 def process_metadata(self
, val
):
561 '''Read metadata properties and list attributes in it'''
565 repl
= ndr_unpack(drsblobs
.replPropertyMetaDataBlob
, str(val
))
568 for o
in repl
.ctr
.array
:
569 att
= self
.samdb_schema
.get_lDAPDisplayName_by_attid(o
.attid
)
570 list_att
.append(att
.lower())
575 def fix_metadata(self
, dn
, attr
):
576 '''re-write replPropertyMetaData elements for a single attribute for a
577 object. This is used to fix missing replPropertyMetaData elements'''
578 res
= self
.samdb
.search(base
= dn
, scope
=ldb
.SCOPE_BASE
, attrs
= [attr
],
579 controls
= ["search_options:1:2", "show_recycled:1"])
583 nmsg
[attr
] = ldb
.MessageElement(msg
[attr
], ldb
.FLAG_MOD_REPLACE
, attr
)
584 if self
.do_modify(nmsg
, ["relax:0", "provision:0", "show_recycled:1"],
585 "Failed to fix metadata for attribute %s" % attr
):
586 self
.report("Fixed metadata for attribute %s" % attr
)
588 def ace_get_effective_inherited_type(self
, ace
):
589 if ace
.flags
& security
.SEC_ACE_FLAG_INHERIT_ONLY
:
593 if ace
.type == security
.SEC_ACE_TYPE_ACCESS_ALLOWED_OBJECT
:
595 elif ace
.type == security
.SEC_ACE_TYPE_ACCESS_DENIED_OBJECT
:
597 elif ace
.type == security
.SEC_ACE_TYPE_SYSTEM_AUDIT_OBJECT
:
599 elif ace
.type == security
.SEC_ACE_TYPE_SYSTEM_ALARM_OBJECT
:
605 if not ace
.object.flags
& security
.SEC_ACE_INHERITED_OBJECT_TYPE_PRESENT
:
608 return str(ace
.object.inherited_type
)
610 def lookup_class_schemaIDGUID(self
, cls
):
611 if cls
in self
.class_schemaIDGUID
:
612 return self
.class_schemaIDGUID
[cls
]
614 flt
= "(&(ldapDisplayName=%s)(objectClass=classSchema))" % cls
615 res
= self
.samdb
.search(base
=self
.schema_dn
,
617 attrs
=["schemaIDGUID"])
618 t
= str(ndr_unpack(misc
.GUID
, res
[0]["schemaIDGUID"][0]))
620 self
.class_schemaIDGUID
[cls
] = t
623 def process_sd(self
, dn
, obj
):
624 sd_attr
= "nTSecurityDescriptor"
625 sd_val
= obj
[sd_attr
]
627 sd
= ndr_unpack(security
.descriptor
, str(sd_val
))
629 is_deleted
= 'isDeleted' in obj
and obj
['isDeleted'][0].upper() == 'TRUE'
631 # we don't fix deleted objects
634 sd_clean
= security
.descriptor()
635 sd_clean
.owner_sid
= sd
.owner_sid
636 sd_clean
.group_sid
= sd
.group_sid
637 sd_clean
.type = sd
.type
638 sd_clean
.revision
= sd
.revision
641 last_inherited_type
= None
644 if sd
.sacl
is not None:
646 for i
in range(0, len(aces
)):
649 if not ace
.flags
& security
.SEC_ACE_FLAG_INHERITED_ACE
:
650 sd_clean
.sacl_add(ace
)
653 t
= self
.ace_get_effective_inherited_type(ace
)
657 if last_inherited_type
is not None:
658 if t
!= last_inherited_type
:
659 # if it inherited from more than
660 # one type it's very likely to be broken
662 # If not the recalculation will calculate
667 last_inherited_type
= t
670 if sd
.dacl
is not None:
672 for i
in range(0, len(aces
)):
675 if not ace
.flags
& security
.SEC_ACE_FLAG_INHERITED_ACE
:
676 sd_clean
.dacl_add(ace
)
679 t
= self
.ace_get_effective_inherited_type(ace
)
683 if last_inherited_type
is not None:
684 if t
!= last_inherited_type
:
685 # if it inherited from more than
686 # one type it's very likely to be broken
688 # If not the recalculation will calculate
693 last_inherited_type
= t
696 return (sd_clean
, sd
)
698 if last_inherited_type
is None:
704 cls
= obj
["objectClass"][-1]
709 res
= self
.samdb
.search(base
=dn
, scope
=ldb
.SCOPE_BASE
,
710 attrs
=["isDeleted", "objectClass"],
711 controls
=["show_recycled:1"])
713 is_deleted
= 'isDeleted' in o
and o
['isDeleted'][0].upper() == 'TRUE'
715 # we don't fix deleted objects
717 cls
= o
["objectClass"][-1]
719 t
= self
.lookup_class_schemaIDGUID(cls
)
721 if t
!= last_inherited_type
:
723 return (sd_clean
, sd
)
728 def err_wrong_sd(self
, dn
, sd
, sd_broken
):
729 '''re-write the SD due to incorrect inherited ACEs'''
730 sd_attr
= "nTSecurityDescriptor"
731 sd_val
= ndr_pack(sd
)
732 sd_flags
= security
.SECINFO_DACL | security
.SECINFO_SACL
734 if not self
.confirm_all('Fix %s on %s?' % (sd_attr
, dn
), 'fix_ntsecuritydescriptor'):
735 self
.report('Not fixing %s on %s\n' % (sd_attr
, dn
))
740 nmsg
[sd_attr
] = ldb
.MessageElement(sd_val
, ldb
.FLAG_MOD_REPLACE
, sd_attr
)
741 if self
.do_modify(nmsg
, ["sd_flags:1:%d" % sd_flags
],
742 "Failed to fix metadata for attribute %s" % sd_attr
):
743 self
.report("Fixed attribute '%s' of '%s'\n" % (sd_attr
, dn
))
745 def is_fsmo_role(self
, dn
):
746 if dn
== self
.samdb
.domain_dn
:
748 if dn
== self
.infrastructure_dn
:
750 if dn
== self
.naming_dn
:
752 if dn
== self
.schema_dn
:
754 if dn
== self
.rid_dn
:
759 def calculate_instancetype(self
, dn
):
761 nc_root
= self
.samdb
.get_nc_root(dn
)
763 instancetype |
= dsdb
.INSTANCE_TYPE_IS_NC_HEAD
765 self
.samdb
.search(base
=dn
.parent(), scope
=ldb
.SCOPE_BASE
, attrs
=[], controls
=["show_recycled:1"])
766 except ldb
.LdbError
, (enum
, estr
):
767 if enum
!= ldb
.ERR_NO_SUCH_OBJECT
:
770 instancetype |
= dsdb
.INSTANCE_TYPE_NC_ABOVE
772 if self
.write_ncs
is not None and str(nc_root
) in self
.write_ncs
:
773 instancetype |
= dsdb
.INSTANCE_TYPE_WRITE
777 def check_object(self
, dn
, attrs
=['*']):
778 '''check one object'''
780 self
.report("Checking object %s" % dn
)
782 attrs
.append("replPropertyMetaData")
786 sd_flags |
= security
.SECINFO_OWNER
787 sd_flags |
= security
.SECINFO_GROUP
788 sd_flags |
= security
.SECINFO_DACL
789 sd_flags |
= security
.SECINFO_SACL
791 res
= self
.samdb
.search(base
=dn
, scope
=ldb
.SCOPE_BASE
,
796 "sd_flags:1:%d" % sd_flags
,
799 except ldb
.LdbError
, (enum
, estr
):
800 if enum
== ldb
.ERR_NO_SUCH_OBJECT
:
801 if self
.in_transaction
:
802 self
.report("ERROR: Object %s disappeared during check" % dn
)
807 self
.report("ERROR: Object %s failed to load during check" % dn
)
811 list_attrs_from_md
= []
813 got_repl_property_meta_data
= False
819 if str(attrname
).lower() == 'replpropertymetadata':
820 list_attrs_from_md
= self
.process_metadata(obj
[attrname
])
821 got_repl_property_meta_data
= True
824 if str(attrname
).lower() == 'ntsecuritydescriptor':
825 (sd
, sd_broken
) = self
.process_sd(dn
, obj
)
826 if sd_broken
is not None:
827 self
.err_wrong_sd(dn
, sd
, sd_broken
)
831 if str(attrname
).lower() == 'objectclass':
832 normalised
= self
.samdb
.dsdb_normalise_attributes(self
.samdb_schema
, attrname
, list(obj
[attrname
]))
833 if list(normalised
) != list(obj
[attrname
]):
834 self
.err_normalise_mismatch_replace(dn
, attrname
, list(obj
[attrname
]))
838 # check for empty attributes
839 for val
in obj
[attrname
]:
841 self
.err_empty_attribute(dn
, attrname
)
845 # get the syntax oid for the attribute, so we can can have
846 # special handling for some specific attribute types
848 syntax_oid
= self
.samdb_schema
.get_syntax_oid_from_lDAPDisplayName(attrname
)
849 except Exception, msg
:
850 self
.err_unknown_attribute(obj
, attrname
)
854 flag
= self
.samdb_schema
.get_systemFlags_from_lDAPDisplayName(attrname
)
855 if (not flag
& dsdb
.DS_FLAG_ATTR_NOT_REPLICATED
856 and not flag
& dsdb
.DS_FLAG_ATTR_IS_CONSTRUCTED
857 and not self
.samdb_schema
.get_linkId_from_lDAPDisplayName(attrname
)):
858 list_attrs_seen
.append(str(attrname
).lower())
860 if syntax_oid
in [ dsdb
.DSDB_SYNTAX_BINARY_DN
, dsdb
.DSDB_SYNTAX_OR_NAME
,
861 dsdb
.DSDB_SYNTAX_STRING_DN
, ldb
.SYNTAX_DN
]:
862 # it's some form of DN, do specialised checking on those
863 error_count
+= self
.check_dn(obj
, attrname
, syntax_oid
)
865 # check for incorrectly normalised attributes
866 for val
in obj
[attrname
]:
867 normalised
= self
.samdb
.dsdb_normalise_attributes(self
.samdb_schema
, attrname
, [val
])
868 if len(normalised
) != 1 or normalised
[0] != val
:
869 self
.err_normalise_mismatch(dn
, attrname
, obj
[attrname
])
873 if str(attrname
).lower() == "instancetype":
874 calculated_instancetype
= self
.calculate_instancetype(dn
)
875 if len(obj
["instanceType"]) != 1 or obj
["instanceType"][0] != str(calculated_instancetype
):
876 self
.err_wrong_instancetype(obj
, calculated_instancetype
)
879 if got_repl_property_meta_data
:
880 rdn
= (str(dn
).split(","))[0]
881 if rdn
== "CN=Deleted Objects":
882 isDeletedAttId
= 131120
883 # It's 29/12/9999 at 23:59:59 UTC as specified in MS-ADTS 7.1.1.4.2 Deleted Objects Container
885 expectedTimeDo
= 2650466015990000000
886 originating
= self
.get_originating_time(obj
["replPropertyMetaData"], isDeletedAttId
)
887 if originating
!= expectedTimeDo
:
888 if self
.confirm_all("Fix isDeleted originating_change_time on '%s'" % str(dn
), 'fix_time_metadata'):
891 nmsg
["isDeleted"] = ldb
.MessageElement("TRUE", ldb
.FLAG_MOD_REPLACE
, "isDeleted")
893 self
.samdb
.modify(nmsg
, controls
=["provision:0"])
896 self
.report("Not fixing isDeleted originating_change_time on '%s'" % str(dn
))
897 for att
in list_attrs_seen
:
898 if not att
in list_attrs_from_md
:
900 self
.report("On object %s" % dn
)
903 self
.report("ERROR: Attribute %s not present in replication metadata" % att
)
904 if not self
.confirm_all("Fix missing replPropertyMetaData element '%s'" % att
, 'fix_all_metadata'):
905 self
.report("Not fixing missing replPropertyMetaData element '%s'" % att
)
907 self
.fix_metadata(dn
, att
)
909 if self
.is_fsmo_role(dn
):
910 if "fSMORoleOwner" not in obj
:
911 self
.err_no_fsmoRoleOwner(obj
)
915 if dn
!= self
.samdb
.get_root_basedn():
916 res
= self
.samdb
.search(base
=dn
.parent(), scope
=ldb
.SCOPE_BASE
,
917 controls
=["show_recycled:1", "show_deleted:1"])
918 except ldb
.LdbError
, (enum
, estr
):
919 if enum
== ldb
.ERR_NO_SUCH_OBJECT
:
920 self
.err_missing_parent(obj
)
927 ################################################################
928 # check special @ROOTDSE attributes
929 def check_rootdse(self
):
930 '''check the @ROOTDSE special object'''
931 dn
= ldb
.Dn(self
.samdb
, '@ROOTDSE')
933 self
.report("Checking object %s" % dn
)
934 res
= self
.samdb
.search(base
=dn
, scope
=ldb
.SCOPE_BASE
)
936 self
.report("Object %s disappeared during check" % dn
)
941 # check that the dsServiceName is in GUID form
942 if not 'dsServiceName' in obj
:
943 self
.report('ERROR: dsServiceName missing in @ROOTDSE')
946 if not obj
['dsServiceName'][0].startswith('<GUID='):
947 self
.report('ERROR: dsServiceName not in GUID form in @ROOTDSE')
949 if not self
.confirm('Change dsServiceName to GUID form?'):
951 res
= self
.samdb
.search(base
=ldb
.Dn(self
.samdb
, obj
['dsServiceName'][0]),
952 scope
=ldb
.SCOPE_BASE
, attrs
=['objectGUID'])
953 guid_str
= str(ndr_unpack(misc
.GUID
, res
[0]['objectGUID'][0]))
956 m
['dsServiceName'] = ldb
.MessageElement("<GUID=%s>" % guid_str
,
957 ldb
.FLAG_MOD_REPLACE
, 'dsServiceName')
958 if self
.do_modify(m
, [], "Failed to change dsServiceName to GUID form", validate
=False):
959 self
.report("Changed dsServiceName to GUID form")
963 ###############################################
964 # re-index the database
965 def reindex_database(self
):
966 '''re-index the whole database'''
968 m
.dn
= ldb
.Dn(self
.samdb
, "@ATTRIBUTES")
969 m
['add'] = ldb
.MessageElement('NONE', ldb
.FLAG_MOD_ADD
, 'force_reindex')
970 m
['delete'] = ldb
.MessageElement('NONE', ldb
.FLAG_MOD_DELETE
, 'force_reindex')
971 return self
.do_modify(m
, [], 're-indexed database', validate
=False)
973 ###############################################
975 def reset_modules(self
):
976 '''reset @MODULES to that needed for current sam.ldb (to read a very old database)'''
978 m
.dn
= ldb
.Dn(self
.samdb
, "@MODULES")
979 m
['@LIST'] = ldb
.MessageElement('samba_dsdb', ldb
.FLAG_MOD_REPLACE
, '@LIST')
980 return self
.do_modify(m
, [], 'reset @MODULES on database', validate
=False)