2 Unix SMB/CIFS implementation.
3 Password and authentication handling
4 Copyright (C) Andrew Bartlett <abartlet@samba.org> 2001-2010
5 Copyright (C) Gerald Carter 2003
6 Copyright (C) Stefan Metzmacher 2005
7 Copyright (C) Matthias Dieter Wallnöfer 2009
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 3 of the License, or
12 (at your option) any later version.
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License
20 along with this program. If not, see <http://www.gnu.org/licenses/>.
24 #include "system/time.h"
25 #include "auth/auth.h"
27 #include "dsdb/samdb/samdb.h"
28 #include "libcli/security/security.h"
29 #include "auth/auth_sam.h"
30 #include "dsdb/common/util.h"
31 #include "libcli/ldap/ldap_ndr.h"
32 #include "param/param.h"
33 #include "librpc/gen_ndr/ndr_winbind_c.h"
34 #include "lib/dbwrap/dbwrap.h"
35 #include "cluster/cluster.h"
38 #define DBGC_CLASS DBGC_AUTH
40 #define KRBTGT_ATTRS \
41 /* required for the krb5 kdc */ \
44 "userPrincipalName", \
45 "servicePrincipalName", \
46 "msDS-KeyVersionNumber", \
47 "msDS-SecondaryKrbTgtNumber", \
48 "msDS-SupportedEncryptionTypes", \
49 "supplementalCredentials", \
50 "msDS-AllowedToDelegateTo", \
51 "msDS-AllowedToActOnBehalfOfOtherIdentity", \
56 "userAccountControl", \
57 "msDS-User-Account-Control-Computed", \
61 "msDS-UserPasswordExpiryTimeComputed", \
64 /* Needed for RODC rule processing */ \
65 "msDS-KrbTgtLinkBL", \
67 /* Required for Group Managed Service Accounts. */ \
68 "msDS-ManagedPasswordId", \
69 "msDS-ManagedPasswordInterval", \
72 #define AUTHN_POLICY_ATTRS \
73 /* Required for authentication policies / silos */ \
74 "msDS-AssignedAuthNPolicy", \
75 "msDS-AssignedAuthNPolicySilo"
77 const char *krbtgt_attrs
[] = {
79 * Authentication policies will not be enforced on the TGS
80 * account. Don’t include the relevant attributes in the account search.
85 const char *server_attrs
[] = {
91 const char *user_attrs
[] = {
93 * This ordering (having msDS-ResultantPSO first) is
94 * important. By processing this attribute first it is
95 * available in the operational module for the other PSO
96 * attribute calculations to use.
106 * To allow us to zero the badPwdCount and lockoutTime on
107 * successful logon, without database churn
112 * Needed for SendToSAM requests
116 /* check 'allowed workstations' */
119 /* required for user_info_dc, not access control: */
126 "lastLogonTimestamp",
139 /****************************************************************************
140 Check if a user is allowed to logon at this time. Note this is the
141 servers local time, as logon hours are just specified as a weekly
143 ****************************************************************************/
145 static bool logon_hours_ok(struct ldb_message
*msg
, const char *name_for_logs
)
147 /* In logon hours first bit is Sunday from 12AM to 1AM */
148 const struct ldb_val
*hours
;
152 uint8_t bitmask
, bitpos
;
154 hours
= ldb_msg_find_ldb_val(msg
, "logonHours");
156 DEBUG(5,("logon_hours_ok: No hours restrictions for user %s\n", name_for_logs
));
160 if (hours
->length
!= 168/8) {
161 DEBUG(5,("logon_hours_ok: malformed logon hours restrictions for user %s\n", name_for_logs
));
165 lasttime
= time(NULL
);
166 utctime
= gmtime(&lasttime
);
168 DEBUG(1, ("logon_hours_ok: failed to get gmtime. Failing logon for user %s\n",
173 /* find the corresponding byte and bit */
174 bitpos
= (utctime
->tm_wday
* 24 + utctime
->tm_hour
) % 168;
175 bitmask
= 1 << (bitpos
% 8);
177 if (! (hours
->data
[bitpos
/8] & bitmask
)) {
178 struct tm
*t
= localtime(&lasttime
);
180 asct
= "INVALID TIME";
184 asct
= "INVALID TIME";
188 DEBUG(1, ("logon_hours_ok: Account for user %s not allowed to "
189 "logon at this time (%s).\n",
190 name_for_logs
, asct
));
194 asct
= asctime(utctime
);
195 DEBUG(5,("logon_hours_ok: user %s allowed to logon at this time (%s)\n",
196 name_for_logs
, asct
? asct
: "UNKNOWN TIME" ));
201 /****************************************************************************
202 Do a specific test for a SAM_ACCOUNT being valid for this connection
203 (ie not disabled, expired and the like).
204 ****************************************************************************/
205 _PUBLIC_ NTSTATUS
authsam_account_ok(TALLOC_CTX
*mem_ctx
,
206 struct ldb_context
*sam_ctx
,
207 uint32_t logon_parameters
,
208 struct ldb_dn
*domain_dn
,
209 struct ldb_message
*msg
,
210 const char *logon_workstation
,
211 const char *name_for_logs
,
212 bool allow_domain_trust
,
213 bool password_change
)
216 const char *workstation_list
;
218 NTTIME must_change_time
;
219 struct timeval tv_now
= timeval_current();
220 NTTIME now
= timeval_to_nttime(&tv_now
);
222 DEBUG(4,("authsam_account_ok: Checking SMB password for user %s\n", name_for_logs
));
224 acct_flags
= samdb_result_acct_flags(msg
, "msDS-User-Account-Control-Computed");
226 acct_expiry
= samdb_result_account_expires(msg
);
228 /* Check for when we must change this password, taking the
229 * userAccountControl flags into account */
230 must_change_time
= samdb_result_nttime(msg
,
231 "msDS-UserPasswordExpiryTimeComputed", 0);
233 workstation_list
= ldb_msg_find_attr_as_string(msg
, "userWorkstations", NULL
);
235 /* Quit if the account was disabled. */
236 if (acct_flags
& ACB_DISABLED
) {
237 DEBUG(2,("authsam_account_ok: Account for user '%s' was disabled.\n", name_for_logs
));
238 return NT_STATUS_ACCOUNT_DISABLED
;
241 /* Quit if the account was locked out. */
242 if (acct_flags
& ACB_AUTOLOCK
) {
243 DEBUG(2,("authsam_account_ok: Account for user %s was locked out.\n", name_for_logs
));
244 return NT_STATUS_ACCOUNT_LOCKED_OUT
;
247 /* Test account expire time */
248 if (now
> acct_expiry
) {
249 DEBUG(2,("authsam_account_ok: Account for user '%s' has expired.\n", name_for_logs
));
250 DEBUG(3,("authsam_account_ok: Account expired at '%s'.\n",
251 nt_time_string(mem_ctx
, acct_expiry
)));
252 return NT_STATUS_ACCOUNT_EXPIRED
;
255 /* check for immediate expiry "must change at next logon" (but not if this is a password change request) */
256 if ((must_change_time
== 0) && !password_change
) {
257 DEBUG(2,("sam_account_ok: Account for user '%s' password must change!.\n",
259 return NT_STATUS_PASSWORD_MUST_CHANGE
;
262 /* check for expired password (but not if this is a password change request) */
263 if ((must_change_time
< now
) && !password_change
) {
264 DEBUG(2,("sam_account_ok: Account for user '%s' password expired!.\n",
266 DEBUG(2,("sam_account_ok: Password expired at '%s' unix time.\n",
267 nt_time_string(mem_ctx
, must_change_time
)));
268 return NT_STATUS_PASSWORD_EXPIRED
;
271 /* Test workstation. Workstation list is comma separated. */
272 if (logon_workstation
&& workstation_list
&& *workstation_list
) {
273 bool invalid_ws
= true;
275 char **workstations
= str_list_make(mem_ctx
, workstation_list
, ",");
277 for (i
= 0; workstations
&& workstations
[i
]; i
++) {
278 DEBUG(10,("sam_account_ok: checking for workstation match '%s' and '%s'\n",
279 workstations
[i
], logon_workstation
));
281 if (strequal(workstations
[i
], logon_workstation
)) {
287 talloc_free(workstations
);
290 return NT_STATUS_INVALID_WORKSTATION
;
294 if (!logon_hours_ok(msg
, name_for_logs
)) {
295 return NT_STATUS_INVALID_LOGON_HOURS
;
298 if (!allow_domain_trust
) {
299 if (acct_flags
& ACB_DOMTRUST
) {
300 DEBUG(2,("sam_account_ok: Domain trust account %s denied by server\n", name_for_logs
));
301 return NT_STATUS_NOLOGON_INTERDOMAIN_TRUST_ACCOUNT
;
304 if (!(logon_parameters
& MSV1_0_ALLOW_SERVER_TRUST_ACCOUNT
)) {
305 if (acct_flags
& ACB_SVRTRUST
) {
306 DEBUG(2,("sam_account_ok: Server trust account %s denied by server\n", name_for_logs
));
307 return NT_STATUS_NOLOGON_SERVER_TRUST_ACCOUNT
;
310 if (!(logon_parameters
& MSV1_0_ALLOW_WORKSTATION_TRUST_ACCOUNT
)) {
311 /* TODO: this fails with current solaris client. We
312 need to work with Gordon to work out why */
313 if (acct_flags
& ACB_WSTRUST
) {
314 DEBUG(4,("sam_account_ok: Wksta trust account %s denied by server\n", name_for_logs
));
315 return NT_STATUS_NOLOGON_WORKSTATION_TRUST_ACCOUNT
;
322 static NTSTATUS
authsam_domain_group_filter(TALLOC_CTX
*mem_ctx
,
329 filter
= talloc_strdup(mem_ctx
, "(&(objectClass=group)");
330 if (filter
== NULL
) {
331 return NT_STATUS_NO_MEMORY
;
335 * Skip all builtin groups, they're added later.
337 talloc_asprintf_addbuf(&filter
,
338 "(!(groupType:"LDB_OID_COMPARATOR_AND
":=%u))",
339 GROUP_TYPE_BUILTIN_LOCAL_GROUP
);
340 if (filter
== NULL
) {
341 return NT_STATUS_NO_MEMORY
;
344 * Only include security groups.
346 talloc_asprintf_addbuf(&filter
,
347 "(groupType:"LDB_OID_COMPARATOR_AND
":=%u))",
348 GROUP_TYPE_SECURITY_ENABLED
);
349 if (filter
== NULL
) {
350 return NT_STATUS_NO_MEMORY
;
357 _PUBLIC_ NTSTATUS
authsam_make_user_info_dc(TALLOC_CTX
*mem_ctx
,
358 struct ldb_context
*sam_ctx
,
359 const char *netbios_name
,
360 const char *domain_name
,
361 const char *dns_domain_name
,
362 struct ldb_dn
*domain_dn
,
363 const struct ldb_message
*msg
,
364 DATA_BLOB user_sess_key
,
365 DATA_BLOB lm_sess_key
,
366 struct auth_user_info_dc
**_user_info_dc
)
370 struct auth_user_info_dc
*user_info_dc
;
371 struct auth_user_info
*info
;
372 const char *str
= NULL
;
374 /* SIDs for the account and his primary group */
375 struct dom_sid
*account_sid
;
376 struct dom_sid_buf buf
;
377 const char *primary_group_dn_str
= NULL
;
378 DATA_BLOB primary_group_blob
;
379 struct ldb_dn
*primary_group_dn
= NULL
;
380 struct ldb_message
*primary_group_msg
= NULL
;
381 unsigned primary_group_type
;
382 /* SID structures for the expanded group memberships */
383 struct auth_SidAttr
*sids
= NULL
;
384 uint32_t num_sids
= 0;
386 struct dom_sid
*domain_sid
;
388 struct ldb_message_element
*el
;
389 static const char * const group_type_attrs
[] = { "groupType", NULL
};
392 return NT_STATUS_INVALID_PARAMETER
;
395 user_info_dc
= talloc_zero(mem_ctx
, struct auth_user_info_dc
);
396 NT_STATUS_HAVE_NO_MEMORY(user_info_dc
);
398 tmp_ctx
= talloc_new(user_info_dc
);
399 if (tmp_ctx
== NULL
) {
400 TALLOC_FREE(user_info_dc
);
401 return NT_STATUS_NO_MEMORY
;
405 * We'll typically store three SIDs: the SID of the user, the SID of the
406 * primary group, and a copy of the latter if it's not a resource
407 * group. Allocate enough memory for these three SIDs.
409 sids
= talloc_zero_array(user_info_dc
, struct auth_SidAttr
, 3);
411 TALLOC_FREE(user_info_dc
);
412 return NT_STATUS_NO_MEMORY
;
417 account_sid
= samdb_result_dom_sid(tmp_ctx
, msg
, "objectSid");
418 if (account_sid
== NULL
) {
419 TALLOC_FREE(user_info_dc
);
420 return NT_STATUS_NO_MEMORY
;
423 status
= dom_sid_split_rid(tmp_ctx
, account_sid
, &domain_sid
, NULL
);
424 if (!NT_STATUS_IS_OK(status
)) {
425 talloc_free(user_info_dc
);
429 sids
[PRIMARY_USER_SID_INDEX
].sid
= *account_sid
;
430 sids
[PRIMARY_USER_SID_INDEX
].attrs
= SE_GROUP_DEFAULT_FLAGS
;
431 sids
[PRIMARY_GROUP_SID_INDEX
].sid
= *domain_sid
;
432 sid_append_rid(&sids
[PRIMARY_GROUP_SID_INDEX
].sid
, ldb_msg_find_attr_as_uint(msg
, "primaryGroupID", ~0));
433 sids
[PRIMARY_GROUP_SID_INDEX
].attrs
= SE_GROUP_DEFAULT_FLAGS
;
436 * Filter out builtin groups from this token. We will search
437 * for builtin groups later, and not include them in the PAC
438 * or SamLogon validation info.
440 status
= authsam_domain_group_filter(tmp_ctx
, &filter
);
441 if (!NT_STATUS_IS_OK(status
)) {
442 TALLOC_FREE(user_info_dc
);
446 primary_group_dn_str
= talloc_asprintf(
449 dom_sid_str_buf(&sids
[PRIMARY_GROUP_SID_INDEX
].sid
, &buf
));
450 if (primary_group_dn_str
== NULL
) {
451 TALLOC_FREE(user_info_dc
);
452 return NT_STATUS_NO_MEMORY
;
455 /* Get the DN of the primary group. */
456 primary_group_dn
= ldb_dn_new(tmp_ctx
, sam_ctx
, primary_group_dn_str
);
457 if (primary_group_dn
== NULL
) {
458 TALLOC_FREE(user_info_dc
);
459 return NT_STATUS_NO_MEMORY
;
463 * Do a search for the primary group, for the purpose of checking
464 * whether it's a resource group.
466 ret
= dsdb_search_one(sam_ctx
, tmp_ctx
,
473 if (ret
!= LDB_SUCCESS
) {
474 talloc_free(user_info_dc
);
475 return NT_STATUS_INTERNAL_DB_CORRUPTION
;
478 /* Check the type of the primary group. */
479 primary_group_type
= ldb_msg_find_attr_as_uint(primary_group_msg
, "groupType", 0);
480 if (primary_group_type
& GROUP_TYPE_RESOURCE_GROUP
) {
482 * If it's a resource group, we might as well indicate that in
483 * its attributes. At any rate, the primary group's attributes
484 * are unlikely to be used in the code, as there's nowhere to
487 sids
[PRIMARY_GROUP_SID_INDEX
].attrs
|= SE_GROUP_RESOURCE
;
490 * The primary group is not a resource group. Make a copy of its
491 * SID to ensure it is added to the Base SIDs in the PAC.
493 sids
[REMAINING_SIDS_INDEX
] = sids
[PRIMARY_GROUP_SID_INDEX
];
497 primary_group_blob
= data_blob_string_const(primary_group_dn_str
);
499 /* Expands the primary group - this function takes in
500 * memberOf-like values, so we fake one up with the
501 * <SID=S-...> format of DN and then let it expand
502 * them, as long as they meet the filter - so only
503 * domain groups, not builtin groups
505 * The primary group is still treated specially, so we set the
506 * 'only childs' flag to true
508 status
= dsdb_expand_nested_groups(sam_ctx
, &primary_group_blob
, true, filter
,
509 user_info_dc
, &sids
, &num_sids
);
510 if (!NT_STATUS_IS_OK(status
)) {
511 talloc_free(user_info_dc
);
515 /* Expands the additional groups */
516 el
= ldb_msg_find_element(msg
, "memberOf");
517 for (i
= 0; el
&& i
< el
->num_values
; i
++) {
518 /* This function takes in memberOf values and expands
519 * them, as long as they meet the filter - so only
520 * domain groups, not builtin groups */
521 status
= dsdb_expand_nested_groups(sam_ctx
, &el
->values
[i
], false, filter
,
522 user_info_dc
, &sids
, &num_sids
);
523 if (!NT_STATUS_IS_OK(status
)) {
524 talloc_free(user_info_dc
);
529 user_info_dc
->sids
= sids
;
530 user_info_dc
->num_sids
= num_sids
;
532 user_info_dc
->info
= info
= talloc_zero(user_info_dc
, struct auth_user_info
);
533 if (user_info_dc
->info
== NULL
) {
534 talloc_free(user_info_dc
);
535 return NT_STATUS_NO_MEMORY
;
538 str
= ldb_msg_find_attr_as_string(msg
, "sAMAccountName", NULL
);
539 info
->account_name
= talloc_strdup(info
, str
);
540 if (info
->account_name
== NULL
) {
541 TALLOC_FREE(user_info_dc
);
542 return NT_STATUS_NO_MEMORY
;
545 str
= ldb_msg_find_attr_as_string(msg
, "userPrincipalName", NULL
);
546 if (str
== NULL
&& dns_domain_name
!= NULL
) {
547 info
->user_principal_name
= talloc_asprintf(info
, "%s@%s",
550 if (info
->user_principal_name
== NULL
) {
551 TALLOC_FREE(user_info_dc
);
552 return NT_STATUS_NO_MEMORY
;
554 info
->user_principal_constructed
= true;
555 } else if (str
!= NULL
) {
556 info
->user_principal_name
= talloc_strdup(info
, str
);
557 if (info
->user_principal_name
== NULL
) {
558 TALLOC_FREE(user_info_dc
);
559 return NT_STATUS_NO_MEMORY
;
563 info
->domain_name
= talloc_strdup(info
, domain_name
);
564 if (info
->domain_name
== NULL
) {
565 TALLOC_FREE(user_info_dc
);
566 return NT_STATUS_NO_MEMORY
;
569 if (dns_domain_name
!= NULL
) {
570 info
->dns_domain_name
= talloc_strdup(info
, dns_domain_name
);
571 if (info
->dns_domain_name
== NULL
) {
572 TALLOC_FREE(user_info_dc
);
573 return NT_STATUS_NO_MEMORY
;
577 str
= ldb_msg_find_attr_as_string(msg
, "displayName", "");
578 info
->full_name
= talloc_strdup(info
, str
);
579 if (info
->full_name
== NULL
) {
580 TALLOC_FREE(user_info_dc
);
581 return NT_STATUS_NO_MEMORY
;
584 str
= ldb_msg_find_attr_as_string(msg
, "scriptPath", "");
585 info
->logon_script
= talloc_strdup(info
, str
);
586 if (info
->logon_script
== NULL
) {
587 TALLOC_FREE(user_info_dc
);
588 return NT_STATUS_NO_MEMORY
;
591 str
= ldb_msg_find_attr_as_string(msg
, "profilePath", "");
592 info
->profile_path
= talloc_strdup(info
, str
);
593 if (info
->profile_path
== NULL
) {
594 TALLOC_FREE(user_info_dc
);
595 return NT_STATUS_NO_MEMORY
;
598 str
= ldb_msg_find_attr_as_string(msg
, "homeDirectory", "");
599 info
->home_directory
= talloc_strdup(info
, str
);
600 if (info
->home_directory
== NULL
) {
601 TALLOC_FREE(user_info_dc
);
602 return NT_STATUS_NO_MEMORY
;
605 str
= ldb_msg_find_attr_as_string(msg
, "homeDrive", "");
606 info
->home_drive
= talloc_strdup(info
, str
);
607 if (info
->home_drive
== NULL
) {
608 TALLOC_FREE(user_info_dc
);
609 return NT_STATUS_NO_MEMORY
;
612 info
->logon_server
= talloc_strdup(info
, netbios_name
);
613 if (info
->logon_server
== NULL
) {
614 TALLOC_FREE(user_info_dc
);
615 return NT_STATUS_NO_MEMORY
;
618 info
->last_logon
= samdb_result_nttime(msg
, "lastLogon", 0);
619 info
->last_logoff
= samdb_result_last_logoff(msg
);
620 info
->acct_expiry
= samdb_result_account_expires(msg
);
621 info
->last_password_change
= samdb_result_nttime(msg
,
623 info
->allow_password_change
624 = samdb_result_allow_password_change(sam_ctx
, mem_ctx
,
625 domain_dn
, msg
, "pwdLastSet");
626 info
->force_password_change
= samdb_result_nttime(msg
,
627 "msDS-UserPasswordExpiryTimeComputed", 0);
628 info
->logon_count
= ldb_msg_find_attr_as_uint(msg
, "logonCount", 0);
629 info
->bad_password_count
= ldb_msg_find_attr_as_uint(msg
, "badPwdCount",
632 info
->acct_flags
= samdb_result_acct_flags(msg
, "msDS-User-Account-Control-Computed");
634 user_info_dc
->user_session_key
= data_blob_talloc(user_info_dc
,
636 user_sess_key
.length
);
637 if (user_sess_key
.data
) {
638 if (user_info_dc
->user_session_key
.data
== NULL
) {
639 TALLOC_FREE(user_info_dc
);
640 return NT_STATUS_NO_MEMORY
;
643 user_info_dc
->lm_session_key
= data_blob_talloc(user_info_dc
,
646 if (lm_sess_key
.data
) {
647 if (user_info_dc
->lm_session_key
.data
== NULL
) {
648 TALLOC_FREE(user_info_dc
);
649 return NT_STATUS_NO_MEMORY
;
653 if (info
->acct_flags
& ACB_SVRTRUST
) {
654 /* the SID_NT_ENTERPRISE_DCS SID gets added into the
656 user_info_dc
->sids
= talloc_realloc(user_info_dc
,
659 user_info_dc
->num_sids
+1);
660 if (user_info_dc
->sids
== NULL
) {
661 TALLOC_FREE(user_info_dc
);
662 return NT_STATUS_NO_MEMORY
;
664 user_info_dc
->sids
[user_info_dc
->num_sids
].sid
= global_sid_Enterprise_DCs
;
665 user_info_dc
->sids
[user_info_dc
->num_sids
].attrs
= SE_GROUP_DEFAULT_FLAGS
;
666 user_info_dc
->num_sids
++;
669 if ((info
->acct_flags
& (ACB_PARTIAL_SECRETS_ACCOUNT
| ACB_WSTRUST
)) ==
670 (ACB_PARTIAL_SECRETS_ACCOUNT
| ACB_WSTRUST
)) {
671 /* the DOMAIN_RID_ENTERPRISE_READONLY_DCS PAC */
672 user_info_dc
->sids
= talloc_realloc(user_info_dc
,
675 user_info_dc
->num_sids
+1);
676 if (user_info_dc
->sids
== NULL
) {
677 TALLOC_FREE(user_info_dc
);
678 return NT_STATUS_NO_MEMORY
;
680 user_info_dc
->sids
[user_info_dc
->num_sids
].sid
= *domain_sid
;
681 sid_append_rid(&user_info_dc
->sids
[user_info_dc
->num_sids
].sid
,
682 DOMAIN_RID_ENTERPRISE_READONLY_DCS
);
683 user_info_dc
->sids
[user_info_dc
->num_sids
].attrs
= SE_GROUP_DEFAULT_FLAGS
;
684 user_info_dc
->num_sids
++;
687 info
->user_flags
= 0;
689 talloc_free(tmp_ctx
);
690 *_user_info_dc
= user_info_dc
;
695 _PUBLIC_ NTSTATUS
authsam_update_user_info_dc(TALLOC_CTX
*mem_ctx
,
696 struct ldb_context
*sam_ctx
,
697 struct auth_user_info_dc
*user_info_dc
)
705 * This function exists to expand group memberships
706 * in the local domain (forest), as the token
707 * may come from a different domain.
711 * Filter out builtin groups from this token. We will search
712 * for builtin groups later.
714 status
= authsam_domain_group_filter(mem_ctx
, &filter
);
715 if (!NT_STATUS_IS_OK(status
)) {
720 * We loop only over the existing number of
723 n
= user_info_dc
->num_sids
;
724 for (i
= 0; i
< n
; i
++) {
725 struct dom_sid
*sid
= &user_info_dc
->sids
[i
].sid
;
726 struct dom_sid_buf sid_buf
;
727 char dn_str
[sizeof(sid_buf
.buf
)*2];
728 DATA_BLOB dn_blob
= data_blob_null
;
733 dom_sid_str_buf(sid
, &sid_buf
));
734 dn_blob
= data_blob_string_const(dn_str
);
737 * We already have the SID in the token, so set
738 * 'only childs' flag to true and add all
739 * groups which match the filter.
741 status
= dsdb_expand_nested_groups(sam_ctx
, &dn_blob
,
745 &user_info_dc
->num_sids
);
746 if (!NT_STATUS_IS_OK(status
)) {
757 * Make a shallow copy of a talloc-allocated user_info_dc structure, holding a
758 * reference to each of the original fields.
760 NTSTATUS
authsam_shallow_copy_user_info_dc(TALLOC_CTX
*mem_ctx
,
761 const struct auth_user_info_dc
*user_info_dc_in
,
762 struct auth_user_info_dc
**user_info_dc_out
)
764 struct auth_user_info_dc
*user_info_dc
= NULL
;
765 NTSTATUS status
= NT_STATUS_OK
;
767 if (user_info_dc_in
== NULL
) {
768 return NT_STATUS_INVALID_PARAMETER
;
771 if (user_info_dc_out
== NULL
) {
772 return NT_STATUS_INVALID_PARAMETER
;
775 user_info_dc
= talloc_zero(mem_ctx
, struct auth_user_info_dc
);
776 if (user_info_dc
== NULL
) {
777 status
= NT_STATUS_NO_MEMORY
;
781 *user_info_dc
= *user_info_dc_in
;
783 if (user_info_dc
->info
!= NULL
) {
784 if (talloc_reference(user_info_dc
, user_info_dc
->info
) == NULL
) {
785 status
= NT_STATUS_NO_MEMORY
;
790 if (user_info_dc
->user_session_key
.data
!= NULL
) {
791 if (talloc_reference(user_info_dc
, user_info_dc
->user_session_key
.data
) == NULL
) {
792 status
= NT_STATUS_NO_MEMORY
;
797 if (user_info_dc
->lm_session_key
.data
!= NULL
) {
798 if (talloc_reference(user_info_dc
, user_info_dc
->lm_session_key
.data
) == NULL
) {
799 status
= NT_STATUS_NO_MEMORY
;
804 if (user_info_dc
->sids
!= NULL
) {
806 * Because we want to modify the SIDs in the user_info_dc
807 * structure, adding various well-known SIDs such as Asserted
808 * Identity or Claims Valid, make a copy of the SID array to
809 * guard against modification of the original.
811 * It’s better not to make a reference, because anything that
812 * tries to call talloc_realloc() on the original or the copy
813 * will fail when called for any referenced talloc context.
815 user_info_dc
->sids
= talloc_memdup(user_info_dc
,
817 talloc_get_size(user_info_dc
->sids
));
818 if (user_info_dc
->sids
== NULL
) {
819 status
= NT_STATUS_NO_MEMORY
;
824 *user_info_dc_out
= user_info_dc
;
828 talloc_free(user_info_dc
);
832 NTSTATUS
sam_get_results_principal(struct ldb_context
*sam_ctx
,
833 TALLOC_CTX
*mem_ctx
, const char *principal
,
835 const uint32_t dsdb_flags
,
836 struct ldb_dn
**domain_dn
,
837 struct ldb_message
**msg
)
839 struct ldb_dn
*user_dn
;
841 TALLOC_CTX
*tmp_ctx
= talloc_new(mem_ctx
);
845 return NT_STATUS_NO_MEMORY
;
848 nt_status
= crack_user_principal_name(sam_ctx
, tmp_ctx
, principal
,
849 &user_dn
, domain_dn
);
850 if (!NT_STATUS_IS_OK(nt_status
)) {
851 talloc_free(tmp_ctx
);
855 /* pull the user attributes */
856 ret
= dsdb_search_one(sam_ctx
, tmp_ctx
, msg
, user_dn
,
857 LDB_SCOPE_BASE
, attrs
,
858 dsdb_flags
| DSDB_SEARCH_SHOW_EXTENDED_DN
| DSDB_SEARCH_NO_GLOBAL_CATALOG
,
860 if (ret
!= LDB_SUCCESS
) {
861 talloc_free(tmp_ctx
);
862 return NT_STATUS_INTERNAL_DB_CORRUPTION
;
864 talloc_steal(mem_ctx
, *msg
);
865 talloc_steal(mem_ctx
, *domain_dn
);
866 talloc_free(tmp_ctx
);
871 /* Used in the gensec_gssapi and gensec_krb5 server-side code, where the PAC isn't available, and for tokenGroups in the DSDB stack.
873 Supply either a principal or a DN
875 NTSTATUS
authsam_get_user_info_dc_principal(TALLOC_CTX
*mem_ctx
,
876 struct loadparm_context
*lp_ctx
,
877 struct ldb_context
*sam_ctx
,
878 const char *principal
,
879 struct ldb_dn
*user_dn
,
880 struct auth_user_info_dc
**user_info_dc
)
883 DATA_BLOB user_sess_key
= data_blob(NULL
, 0);
884 DATA_BLOB lm_sess_key
= data_blob(NULL
, 0);
886 struct ldb_message
*msg
;
887 struct ldb_dn
*domain_dn
;
889 TALLOC_CTX
*tmp_ctx
= talloc_new(mem_ctx
);
891 return NT_STATUS_NO_MEMORY
;
895 nt_status
= sam_get_results_principal(sam_ctx
, tmp_ctx
, principal
,
896 user_attrs
, DSDB_SEARCH_UPDATE_MANAGED_PASSWORDS
, &domain_dn
, &msg
);
897 if (!NT_STATUS_IS_OK(nt_status
)) {
898 talloc_free(tmp_ctx
);
901 } else if (user_dn
) {
902 struct dom_sid
*user_sid
, *domain_sid
;
904 /* pull the user attributes */
905 ret
= dsdb_search_one(sam_ctx
, tmp_ctx
, &msg
, user_dn
,
906 LDB_SCOPE_BASE
, user_attrs
,
907 DSDB_SEARCH_SHOW_EXTENDED_DN
| DSDB_SEARCH_NO_GLOBAL_CATALOG
| DSDB_SEARCH_UPDATE_MANAGED_PASSWORDS
,
909 if (ret
== LDB_ERR_NO_SUCH_OBJECT
) {
910 talloc_free(tmp_ctx
);
911 return NT_STATUS_NO_SUCH_USER
;
912 } else if (ret
!= LDB_SUCCESS
) {
913 talloc_free(tmp_ctx
);
914 return NT_STATUS_INTERNAL_DB_CORRUPTION
;
917 user_sid
= samdb_result_dom_sid(msg
, msg
, "objectSid");
919 nt_status
= dom_sid_split_rid(tmp_ctx
, user_sid
, &domain_sid
, NULL
);
920 if (!NT_STATUS_IS_OK(nt_status
)) {
921 talloc_free(tmp_ctx
);
925 domain_dn
= samdb_search_dn(sam_ctx
, mem_ctx
, NULL
,
926 "(&(objectSid=%s)(objectClass=domain))",
927 ldap_encode_ndr_dom_sid(tmp_ctx
, domain_sid
));
929 struct dom_sid_buf buf
;
930 DEBUG(3, ("authsam_get_user_info_dc_principal: Failed to find domain with: SID %s\n",
931 dom_sid_str_buf(domain_sid
, &buf
)));
932 talloc_free(tmp_ctx
);
933 return NT_STATUS_NO_SUCH_USER
;
937 talloc_free(tmp_ctx
);
938 return NT_STATUS_INVALID_PARAMETER
;
941 nt_status
= authsam_make_user_info_dc(tmp_ctx
, sam_ctx
,
942 lpcfg_netbios_name(lp_ctx
),
943 lpcfg_sam_name(lp_ctx
),
944 lpcfg_sam_dnsname(lp_ctx
),
947 user_sess_key
, lm_sess_key
,
949 if (!NT_STATUS_IS_OK(nt_status
)) {
950 talloc_free(tmp_ctx
);
954 talloc_steal(mem_ctx
, *user_info_dc
);
955 talloc_free(tmp_ctx
);
961 * Returns the details for the Password Settings Object (PSO), if one applies
964 static int authsam_get_user_pso(struct ldb_context
*sam_ctx
,
966 struct ldb_message
*user_msg
,
967 struct ldb_message
**pso_msg
)
969 const char *attrs
[] = { "msDS-LockoutThreshold",
970 "msDS-LockoutObservationWindow",
972 struct ldb_dn
*pso_dn
= NULL
;
973 struct ldb_result
*res
= NULL
;
976 /* check if the user has a PSO that applies to it */
977 pso_dn
= ldb_msg_find_attr_as_dn(sam_ctx
, mem_ctx
, user_msg
,
978 "msDS-ResultantPSO");
980 if (pso_dn
!= NULL
) {
981 ret
= dsdb_search_dn(sam_ctx
, mem_ctx
, &res
, pso_dn
, attrs
, 0);
982 if (ret
!= LDB_SUCCESS
) {
986 *pso_msg
= res
->msgs
[0];
993 * Re-read the bad password and successful logon data for a user.
995 * The DN in the passed user record should contain the "objectGUID" in case the
996 * object DN has changed.
998 NTSTATUS
authsam_reread_user_logon_data(
999 struct ldb_context
*sam_ctx
,
1000 TALLOC_CTX
*mem_ctx
,
1001 const struct ldb_message
*user_msg
,
1002 struct ldb_message
**current
)
1004 const struct ldb_val
*v
= NULL
;
1005 struct ldb_result
*res
= NULL
;
1006 uint16_t acct_flags
= 0;
1007 const char *attr_name
= "msDS-User-Account-Control-Computed";
1012 * Re-read the account details, using the GUID in case the DN
1013 * is being changed (this is automatic in LDB because the
1014 * original search also used DSDB_SEARCH_SHOW_EXTENDED_DN)
1016 * We re read all the attributes in user_attrs, rather than using a
1017 * subset to ensure that we can reuse existing validation code.
1019 ret
= dsdb_search_dn(sam_ctx
,
1024 DSDB_SEARCH_SHOW_EXTENDED_DN
| DSDB_SEARCH_UPDATE_MANAGED_PASSWORDS
);
1025 if (ret
!= LDB_SUCCESS
) {
1026 DBG_ERR("Unable to re-read account control data for %s\n",
1027 ldb_dn_get_linearized(user_msg
->dn
));
1028 return NT_STATUS_INTERNAL_ERROR
;
1032 * Ensure the account has not been locked out by another request
1034 v
= ldb_msg_find_ldb_val(res
->msgs
[0], attr_name
);
1035 if (v
== NULL
|| v
->data
== NULL
) {
1036 DBG_ERR("No %s attribute for %s\n",
1038 ldb_dn_get_linearized(user_msg
->dn
));
1040 return NT_STATUS_INTERNAL_ERROR
;
1042 acct_flags
= samdb_result_acct_flags(res
->msgs
[0], attr_name
);
1043 if (acct_flags
& ACB_AUTOLOCK
) {
1045 "Account for user %s was locked out.\n",
1046 ldb_dn_get_linearized(user_msg
->dn
));
1048 return NT_STATUS_ACCOUNT_LOCKED_OUT
;
1050 *current
= talloc_steal(mem_ctx
, res
->msgs
[0]);
1052 return NT_STATUS_OK
;
1055 static struct db_context
*authsam_get_bad_password_db(
1056 TALLOC_CTX
*mem_ctx
,
1057 struct ldb_context
*sam_ctx
)
1059 struct loadparm_context
*lp_ctx
= NULL
;
1060 const char *db_name
= "bad_password";
1061 struct db_context
*db_ctx
= NULL
;
1063 lp_ctx
= ldb_get_opaque(sam_ctx
, "loadparm");
1064 if (lp_ctx
== NULL
) {
1065 DBG_ERR("Unable to get loadparm_context\n");
1069 db_ctx
= cluster_db_tmp_open(mem_ctx
, lp_ctx
, db_name
, TDB_DEFAULT
);
1070 if (db_ctx
== NULL
) {
1071 DBG_ERR("Unable to open bad password attempts database\n");
1077 static NTSTATUS
get_object_sid_as_tdb_data(
1078 TALLOC_CTX
*mem_ctx
,
1079 const struct ldb_message
*msg
,
1080 struct dom_sid_buf
*buf
,
1083 struct dom_sid
*objectsid
= NULL
;
1086 * Convert the objectSID to a human readable form to
1087 * make debugging easier
1089 objectsid
= samdb_result_dom_sid(mem_ctx
, msg
, "objectSID");
1090 if (objectsid
== NULL
) {
1091 DBG_ERR("Unable to extract objectSID\n");
1092 return NT_STATUS_INTERNAL_ERROR
;
1094 dom_sid_str_buf(objectsid
, buf
);
1095 key
->dptr
= (unsigned char *)buf
->buf
;
1096 key
->dsize
= strlen(buf
->buf
);
1098 talloc_free(objectsid
);
1100 return NT_STATUS_OK
;
1104 * Add the users objectSID to the bad password attempt database
1105 * to indicate that last authentication failed due to a bad password
1107 static NTSTATUS
authsam_set_bad_password_indicator(
1108 struct ldb_context
*sam_ctx
,
1109 TALLOC_CTX
*mem_ctx
,
1110 const struct ldb_message
*msg
)
1112 NTSTATUS status
= NT_STATUS_OK
;
1113 struct dom_sid_buf buf
;
1115 TDB_DATA value
= {0};
1116 struct db_context
*db
= NULL
;
1118 TALLOC_CTX
*ctx
= talloc_new(mem_ctx
);
1120 return NT_STATUS_NO_MEMORY
;
1123 db
= authsam_get_bad_password_db(ctx
, sam_ctx
);
1125 status
= NT_STATUS_INTERNAL_ERROR
;
1129 status
= get_object_sid_as_tdb_data(ctx
, msg
, &buf
, &key
);
1130 if (!NT_STATUS_IS_OK(status
)) {
1134 status
= dbwrap_store(db
, key
, value
, 0);
1135 if (!NT_STATUS_IS_OK(status
)) {
1136 DBG_ERR("Unable to store bad password indicator\n");
1144 * see if the users objectSID is in the bad password attempt database
1146 static NTSTATUS
authsam_check_bad_password_indicator(
1147 struct ldb_context
*sam_ctx
,
1148 TALLOC_CTX
*mem_ctx
,
1150 const struct ldb_message
*msg
)
1152 NTSTATUS status
= NT_STATUS_OK
;
1153 struct dom_sid_buf buf
;
1155 struct db_context
*db
= NULL
;
1157 TALLOC_CTX
*ctx
= talloc_new(mem_ctx
);
1159 return NT_STATUS_NO_MEMORY
;
1162 db
= authsam_get_bad_password_db(ctx
, sam_ctx
);
1164 status
= NT_STATUS_INTERNAL_ERROR
;
1168 status
= get_object_sid_as_tdb_data(ctx
, msg
, &buf
, &key
);
1169 if (!NT_STATUS_IS_OK(status
)) {
1173 *exists
= dbwrap_exists(db
, key
);
1180 * Remove the users objectSID to the bad password attempt database
1181 * to indicate that last authentication succeeded.
1183 static NTSTATUS
authsam_clear_bad_password_indicator(
1184 struct ldb_context
*sam_ctx
,
1185 TALLOC_CTX
*mem_ctx
,
1186 const struct ldb_message
*msg
)
1188 NTSTATUS status
= NT_STATUS_OK
;
1189 struct dom_sid_buf buf
;
1191 struct db_context
*db
= NULL
;
1193 TALLOC_CTX
*ctx
= talloc_new(mem_ctx
);
1195 return NT_STATUS_NO_MEMORY
;
1198 db
= authsam_get_bad_password_db(ctx
, sam_ctx
);
1200 status
= NT_STATUS_INTERNAL_ERROR
;
1204 status
= get_object_sid_as_tdb_data(ctx
, msg
, &buf
, &key
);
1205 if (!NT_STATUS_IS_OK(status
)) {
1209 status
= dbwrap_delete(db
, key
);
1210 if (NT_STATUS_EQUAL(NT_STATUS_NOT_FOUND
, status
)) {
1212 * Ok there was no bad password indicator this is expected
1214 status
= NT_STATUS_OK
;
1216 if (NT_STATUS_IS_ERR(status
)) {
1217 DBG_ERR("Unable to delete bad password indicator, %s %s\n",
1219 get_friendly_nt_error_msg(status
));
1226 NTSTATUS
authsam_update_bad_pwd_count(struct ldb_context
*sam_ctx
,
1227 struct ldb_message
*msg
,
1228 struct ldb_dn
*domain_dn
)
1230 const char *attrs
[] = { "lockoutThreshold",
1231 "lockOutObservationWindow",
1237 struct ldb_result
*domain_res
;
1238 struct ldb_message
*msg_mod
= NULL
;
1239 struct ldb_message
*current
= NULL
;
1240 struct ldb_message
*pso_msg
= NULL
;
1241 bool txn_active
= false;
1242 TALLOC_CTX
*mem_ctx
;
1244 mem_ctx
= talloc_new(msg
);
1245 if (mem_ctx
== NULL
) {
1246 return NT_STATUS_NO_MEMORY
;
1249 ret
= dsdb_search_dn(sam_ctx
, mem_ctx
, &domain_res
, domain_dn
, attrs
, 0);
1250 if (ret
!= LDB_SUCCESS
) {
1251 TALLOC_FREE(mem_ctx
);
1252 return NT_STATUS_INTERNAL_DB_CORRUPTION
;
1255 ret
= authsam_get_user_pso(sam_ctx
, mem_ctx
, msg
, &pso_msg
);
1256 if (ret
!= LDB_SUCCESS
) {
1259 * fallback to using the domain defaults so that we still
1260 * record the bad password attempt
1262 DBG_ERR("Error (%d) checking PSO for %s\n",
1263 ret
, ldb_dn_get_linearized(msg
->dn
));
1267 * To ensure that the bad password count is updated atomically,
1269 * begin a transaction
1270 * re-read the account details,
1271 * using the <GUID= part of the DN
1272 * update the bad password count
1273 * commit the transaction.
1277 * Start a new transaction
1279 ret
= ldb_transaction_start(sam_ctx
);
1280 if (ret
!= LDB_SUCCESS
) {
1281 status
= NT_STATUS_INTERNAL_ERROR
;
1287 * Re-read the account details, using the GUID in case the DN
1290 status
= authsam_reread_user_logon_data(
1291 sam_ctx
, mem_ctx
, msg
, ¤t
);
1292 if (!NT_STATUS_IS_OK(status
)) {
1293 /* The re-read can return account locked out, as well
1294 * as an internal error
1296 if (NT_STATUS_EQUAL(status
, NT_STATUS_ACCOUNT_LOCKED_OUT
)) {
1298 * For NT_STATUS_ACCOUNT_LOCKED_OUT we want to commit
1299 * the transaction. Again to avoid cluttering the
1300 * audit logs with spurious errors
1308 * Update the bad password count and if required lock the account
1310 status
= dsdb_update_bad_pwd_count(
1314 domain_res
->msgs
[0],
1317 if (!NT_STATUS_IS_OK(status
)) {
1318 status
= NT_STATUS_INTERNAL_ERROR
;
1323 * Write the data back to disk if required.
1325 if (msg_mod
!= NULL
) {
1326 struct ldb_request
*req
;
1328 ret
= ldb_build_mod_req(&req
, sam_ctx
, sam_ctx
,
1332 ldb_op_default_callback
,
1334 if (ret
!= LDB_SUCCESS
) {
1335 TALLOC_FREE(msg_mod
);
1336 status
= NT_STATUS_INTERNAL_ERROR
;
1340 ret
= ldb_request_add_control(req
,
1341 DSDB_CONTROL_FORCE_RODC_LOCAL_CHANGE
,
1343 if (ret
!= LDB_SUCCESS
) {
1345 status
= NT_STATUS_INTERNAL_ERROR
;
1350 * As we're in a transaction, make the ldb request directly
1351 * to avoid the nested transaction that would result if we
1352 * called dsdb_autotransaction_request
1354 ret
= ldb_request(sam_ctx
, req
);
1355 if (ret
== LDB_SUCCESS
) {
1356 ret
= ldb_wait(req
->handle
, LDB_WAIT_ALL
);
1359 if (ret
!= LDB_SUCCESS
) {
1360 status
= NT_STATUS_INTERNAL_ERROR
;
1363 status
= authsam_set_bad_password_indicator(
1364 sam_ctx
, mem_ctx
, msg
);
1365 if (!NT_STATUS_IS_OK(status
)) {
1370 * Note that we may not have updated the user record, but
1371 * committing the transaction in that case is still the correct
1373 * If the transaction was cancelled, this would be logged by
1374 * the dsdb audit log as a failure. When in fact it is expected
1378 TALLOC_FREE(mem_ctx
);
1379 ret
= ldb_transaction_commit(sam_ctx
);
1380 if (ret
!= LDB_SUCCESS
) {
1381 DBG_ERR("Error (%d) %s, committing transaction,"
1382 " while updating bad password count"
1385 ldb_errstring(sam_ctx
),
1386 ldb_dn_get_linearized(msg
->dn
));
1387 return NT_STATUS_INTERNAL_ERROR
;
1392 DBG_ERR("Failed to update badPwdCount, badPasswordTime or "
1393 "set lockoutTime on %s: %s\n",
1394 ldb_dn_get_linearized(msg
->dn
),
1395 ldb_errstring(sam_ctx
) != NULL
?
1396 ldb_errstring(sam_ctx
) :nt_errstr(status
));
1398 ret
= ldb_transaction_cancel(sam_ctx
);
1399 if (ret
!= LDB_SUCCESS
) {
1400 DBG_ERR("Error rolling back transaction,"
1401 " while updating bad password count"
1403 ldb_dn_get_linearized(msg
->dn
),
1404 ldb_errstring(sam_ctx
));
1407 TALLOC_FREE(mem_ctx
);
1413 * msDS-LogonTimeSyncInterval is an int32_t number of days.
1415 * The docs say: "the initial update, after the domain functional
1416 * level is raised to DS_BEHAVIOR_WIN2003 or higher, is calculated as
1417 * 14 days minus a random percentage of 5 days", but we aren't doing
1418 * that. The blogosphere seems to think that this randomised update
1419 * happens every time, but [MS-ADA1] doesn't agree.
1421 * Dochelp referred us to the following blog post:
1422 * http://blogs.technet.com/b/askds/archive/2009/04/15/the-lastlogontimestamp-attribute-what-it-was-designed-for-and-how-it-works.aspx
1424 * when msDS-LogonTimeSyncInterval is zero, the lastLogonTimestamp is
1428 static NTSTATUS
authsam_calculate_lastlogon_sync_interval(
1429 struct ldb_context
*sam_ctx
,
1431 struct ldb_dn
*domain_dn
,
1432 NTTIME
*sync_interval_nt
)
1434 static const char *attrs
[] = { "msDS-LogonTimeSyncInterval",
1437 struct ldb_result
*domain_res
= NULL
;
1438 TALLOC_CTX
*mem_ctx
= NULL
;
1439 uint32_t sync_interval
;
1441 mem_ctx
= talloc_new(ctx
);
1442 if (mem_ctx
== NULL
) {
1443 return NT_STATUS_NO_MEMORY
;
1446 ret
= dsdb_search_dn(sam_ctx
, mem_ctx
, &domain_res
, domain_dn
, attrs
,
1448 if (ret
!= LDB_SUCCESS
|| domain_res
->count
!= 1) {
1449 TALLOC_FREE(mem_ctx
);
1450 return NT_STATUS_INTERNAL_DB_CORRUPTION
;
1453 sync_interval
= ldb_msg_find_attr_as_int(domain_res
->msgs
[0],
1454 "msDS-LogonTimeSyncInterval",
1456 DEBUG(5, ("sync interval is %d\n", sync_interval
));
1457 if (sync_interval
>= 5){
1459 * Subtract "a random percentage of 5" days. Presumably this
1460 * percentage is between 0 and 100, and modulus is accurate
1463 uint32_t r
= generate_random() % 6;
1465 DBG_INFO("randomised sync interval is %d (-%d)\n", sync_interval
, r
);
1467 /* In the case where sync_interval < 5 there is no randomisation */
1470 * msDS-LogonTimeSyncInterval is an int32_t number of days,
1471 * while lastLogonTimestamp (to be updated) is in the 64 bit
1472 * 100ns NTTIME format so we must convert.
1474 *sync_interval_nt
= sync_interval
* 24LL * 3600LL * 10000000LL;
1475 TALLOC_FREE(mem_ctx
);
1476 return NT_STATUS_OK
;
1481 * We only set lastLogonTimestamp if the current value is older than
1482 * now - msDS-LogonTimeSyncInterval days.
1484 * lastLogonTimestamp is in the 64 bit 100ns NTTIME format
1486 static NTSTATUS
authsam_update_lastlogon_timestamp(struct ldb_context
*sam_ctx
,
1487 struct ldb_message
*msg_mod
,
1488 struct ldb_dn
*domain_dn
,
1489 NTTIME old_timestamp
,
1491 NTTIME sync_interval_nt
)
1494 DEBUG(5, ("old timestamp is %lld, threshold %lld, diff %lld\n",
1495 (long long int)old_timestamp
,
1496 (long long int)(now
- sync_interval_nt
),
1497 (long long int)(old_timestamp
- now
+ sync_interval_nt
)));
1499 if (sync_interval_nt
== 0){
1501 * Setting msDS-LogonTimeSyncInterval to zero is how you ask
1502 * that nothing happens here.
1504 return NT_STATUS_OK
;
1506 if (old_timestamp
> now
){
1507 DEBUG(0, ("lastLogonTimestamp is in the future! (%lld > %lld)\n",
1508 (long long int)old_timestamp
, (long long int)now
));
1511 } else if (old_timestamp
< now
- sync_interval_nt
){
1512 DEBUG(5, ("updating lastLogonTimestamp to %lld\n",
1513 (long long int)now
));
1515 /* The time has come to update lastLogonTimestamp */
1516 ret
= samdb_msg_add_int64(sam_ctx
, msg_mod
, msg_mod
,
1517 "lastLogonTimestamp", now
);
1519 if (ret
!= LDB_SUCCESS
) {
1520 return NT_STATUS_NO_MEMORY
;
1523 return NT_STATUS_OK
;
1526 /****************************************************************************
1527 Look for the specified user in the sam, return ldb result structures
1528 ****************************************************************************/
1530 NTSTATUS
authsam_search_account(TALLOC_CTX
*mem_ctx
, struct ldb_context
*sam_ctx
,
1531 const char *account_name
,
1532 struct ldb_dn
*domain_dn
,
1533 struct ldb_message
**ret_msg
)
1536 char *account_name_encoded
= NULL
;
1538 account_name_encoded
= ldb_binary_encode_string(mem_ctx
, account_name
);
1539 if (account_name_encoded
== NULL
) {
1540 return NT_STATUS_NO_MEMORY
;
1543 /* pull the user attributes */
1544 ret
= dsdb_search_one(sam_ctx
, mem_ctx
, ret_msg
, domain_dn
, LDB_SCOPE_SUBTREE
,
1546 DSDB_SEARCH_SHOW_EXTENDED_DN
| DSDB_SEARCH_UPDATE_MANAGED_PASSWORDS
,
1547 "(&(sAMAccountName=%s)(objectclass=user))",
1548 account_name_encoded
);
1549 if (ret
== LDB_ERR_NO_SUCH_OBJECT
) {
1550 DEBUG(3,("authsam_search_account: Couldn't find user [%s] in samdb, under %s\n",
1551 account_name
, ldb_dn_get_linearized(domain_dn
)));
1552 return NT_STATUS_NO_SUCH_USER
;
1554 if (ret
!= LDB_SUCCESS
) {
1555 return NT_STATUS_INTERNAL_DB_CORRUPTION
;
1558 return NT_STATUS_OK
;
1562 /* Reset the badPwdCount to zero and update the lastLogon time. */
1563 NTSTATUS
authsam_logon_success_accounting(struct ldb_context
*sam_ctx
,
1564 const struct ldb_message
*msg
,
1565 struct ldb_dn
*domain_dn
,
1566 bool interactive_or_kerberos
,
1567 TALLOC_CTX
*send_to_sam_mem_ctx
,
1568 struct netr_SendToSamBase
**send_to_sam
)
1574 int64_t lockoutTime
;
1575 struct ldb_message
*msg_mod
;
1576 TALLOC_CTX
*mem_ctx
;
1577 struct timeval tv_now
;
1579 NTTIME lastLogonTimestamp
;
1580 int64_t lockOutObservationWindow
;
1581 NTTIME sync_interval_nt
= 0;
1582 bool am_rodc
= false;
1583 bool txn_active
= false;
1584 bool need_db_reread
= false;
1586 mem_ctx
= talloc_new(msg
);
1587 if (mem_ctx
== NULL
) {
1588 return NT_STATUS_NO_MEMORY
;
1592 * Any update of the last logon data, needs to be done inside a
1594 * And the user data needs to be re-read, and the account re-checked
1597 * However we have long-running transactions like replication
1598 * that could otherwise grind the system to a halt so we first
1599 * determine if *this* account has seen a bad password,
1600 * otherwise we only start a transaction if there was a need
1601 * (because a change was to be made).
1604 status
= authsam_check_bad_password_indicator(
1605 sam_ctx
, mem_ctx
, &need_db_reread
, msg
);
1606 if (!NT_STATUS_IS_OK(status
)) {
1607 TALLOC_FREE(mem_ctx
);
1611 if (interactive_or_kerberos
== false) {
1613 * Avoid calculating this twice, it reads the PSO. A
1614 * race on this is unimportant.
1616 lockOutObservationWindow
1617 = samdb_result_msds_LockoutObservationWindow(
1618 sam_ctx
, mem_ctx
, domain_dn
, msg
);
1621 ret
= samdb_rodc(sam_ctx
, &am_rodc
);
1622 if (ret
!= LDB_SUCCESS
) {
1623 status
= NT_STATUS_INTERNAL_ERROR
;
1629 * Avoid reading the main domain DN twice. A race on
1630 * this is unimportant.
1632 status
= authsam_calculate_lastlogon_sync_interval(
1633 sam_ctx
, mem_ctx
, domain_dn
, &sync_interval_nt
);
1635 if (!NT_STATUS_IS_OK(status
)) {
1636 status
= NT_STATUS_INTERNAL_ERROR
;
1643 if (need_db_reread
) {
1644 struct ldb_message
*current
= NULL
;
1647 * Start a new transaction
1649 ret
= ldb_transaction_start(sam_ctx
);
1650 if (ret
!= LDB_SUCCESS
) {
1651 status
= NT_STATUS_INTERNAL_ERROR
;
1658 * Re-read the account details, using the GUID
1659 * embedded in DN so this is safe against a race where
1660 * it is being renamed.
1662 status
= authsam_reread_user_logon_data(
1663 sam_ctx
, mem_ctx
, msg
, ¤t
);
1664 if (!NT_STATUS_IS_OK(status
)) {
1666 * The re-read can return account locked out, as well
1667 * as an internal error
1669 if (NT_STATUS_EQUAL(status
, NT_STATUS_ACCOUNT_LOCKED_OUT
)) {
1671 * For NT_STATUS_ACCOUNT_LOCKED_OUT we want to commit
1672 * the transaction. Again to avoid cluttering the
1673 * audit logs with spurious errors
1682 lockoutTime
= ldb_msg_find_attr_as_int64(msg
, "lockoutTime", 0);
1683 dbBadPwdCount
= ldb_msg_find_attr_as_int(msg
, "badPwdCount", 0);
1684 tv_now
= timeval_current();
1685 now
= timeval_to_nttime(&tv_now
);
1687 if (interactive_or_kerberos
) {
1688 badPwdCount
= dbBadPwdCount
;
1691 * We get lockOutObservationWindow above, before the
1694 badPwdCount
= dsdb_effective_badPwdCount(
1695 msg
, lockOutObservationWindow
, now
);
1697 lastLogonTimestamp
=
1698 ldb_msg_find_attr_as_int64(msg
, "lastLogonTimestamp", 0);
1700 DEBUG(5, ("lastLogonTimestamp is %lld\n",
1701 (long long int)lastLogonTimestamp
));
1703 msg_mod
= ldb_msg_new(mem_ctx
);
1704 if (msg_mod
== NULL
) {
1705 status
= NT_STATUS_NO_MEMORY
;
1710 * By using the DN from msg->dn directly, we allow LDB to
1711 * prefer the embedded GUID form, so this is actually quite
1712 * safe even in the case where DN has been changed
1714 msg_mod
->dn
= msg
->dn
;
1716 if (lockoutTime
!= 0) {
1718 * This implies "badPwdCount" = 0, see samldb_lockout_time()
1720 ret
= samdb_msg_add_int(sam_ctx
, msg_mod
, msg_mod
, "lockoutTime", 0);
1721 if (ret
!= LDB_SUCCESS
) {
1722 status
= NT_STATUS_NO_MEMORY
;
1725 } else if (badPwdCount
!= 0) {
1726 ret
= samdb_msg_add_int(sam_ctx
, msg_mod
, msg_mod
, "badPwdCount", 0);
1727 if (ret
!= LDB_SUCCESS
) {
1728 status
= NT_STATUS_NO_MEMORY
;
1733 if (interactive_or_kerberos
||
1734 (badPwdCount
!= 0 && lockoutTime
== 0)) {
1735 ret
= samdb_msg_add_int64(sam_ctx
, msg_mod
, msg_mod
,
1737 if (ret
!= LDB_SUCCESS
) {
1738 status
= NT_STATUS_NO_MEMORY
;
1743 if (interactive_or_kerberos
) {
1746 logonCount
= ldb_msg_find_attr_as_int(msg
, "logonCount", 0);
1750 ret
= samdb_msg_add_int(sam_ctx
, msg_mod
, msg_mod
,
1751 "logonCount", logonCount
);
1752 if (ret
!= LDB_SUCCESS
) {
1753 status
= NT_STATUS_NO_MEMORY
;
1757 /* Set an unset logonCount to 0 on first successful login */
1758 if (ldb_msg_find_ldb_val(msg
, "logonCount") == NULL
) {
1759 ret
= samdb_msg_add_int(sam_ctx
, msg_mod
, msg_mod
,
1761 if (ret
!= LDB_SUCCESS
) {
1762 TALLOC_FREE(mem_ctx
);
1763 return NT_STATUS_NO_MEMORY
;
1769 status
= authsam_update_lastlogon_timestamp(
1776 if (!NT_STATUS_IS_OK(status
)) {
1777 status
= NT_STATUS_NO_MEMORY
;
1781 /* Perform the (async) SendToSAM calls for MS-SAMS */
1782 if (dbBadPwdCount
!= 0 && send_to_sam
!= NULL
) {
1783 struct netr_SendToSamBase
*base_msg
;
1784 struct GUID guid
= samdb_result_guid(msg
, "objectGUID");
1786 base_msg
= talloc_zero(send_to_sam_mem_ctx
,
1787 struct netr_SendToSamBase
);
1788 if (base_msg
== NULL
) {
1789 status
= NT_STATUS_NO_MEMORY
;
1793 base_msg
->message_type
= SendToSamResetBadPasswordCount
;
1794 base_msg
->message_size
= 16;
1795 base_msg
->message
.reset_bad_password
.guid
= guid
;
1796 *send_to_sam
= base_msg
;
1800 if (msg_mod
->num_elements
> 0) {
1802 struct ldb_request
*req
;
1805 * If it turns out we are going to update the DB, go
1806 * back to the start, get a transaction and the
1807 * current DB state and try again
1809 if (txn_active
== false) {
1810 need_db_reread
= true;
1811 goto get_transaction
;
1814 /* mark all the message elements as LDB_FLAG_MOD_REPLACE */
1815 for (i
=0;i
<msg_mod
->num_elements
;i
++) {
1816 msg_mod
->elements
[i
].flags
= LDB_FLAG_MOD_REPLACE
;
1819 ret
= ldb_build_mod_req(&req
, sam_ctx
, sam_ctx
,
1823 ldb_op_default_callback
,
1825 if (ret
!= LDB_SUCCESS
) {
1826 status
= NT_STATUS_INTERNAL_ERROR
;
1830 ret
= ldb_request_add_control(req
,
1831 DSDB_CONTROL_FORCE_RODC_LOCAL_CHANGE
,
1833 if (ret
!= LDB_SUCCESS
) {
1835 status
= NT_STATUS_INTERNAL_ERROR
;
1839 * As we're in a transaction, make the ldb request directly
1840 * to avoid the nested transaction that would result if we
1841 * called dsdb_autotransaction_request
1843 ret
= ldb_request(sam_ctx
, req
);
1844 if (ret
== LDB_SUCCESS
) {
1845 ret
= ldb_wait(req
->handle
, LDB_WAIT_ALL
);
1848 if (ret
!= LDB_SUCCESS
) {
1849 status
= NT_STATUS_INTERNAL_ERROR
;
1853 status
= authsam_clear_bad_password_indicator(sam_ctx
, mem_ctx
, msg
);
1854 if (!NT_STATUS_IS_OK(status
)) {
1859 * Note that we may not have updated the user record, but
1860 * committing the transaction in that case is still the correct
1862 * If the transaction was cancelled, this would be logged by
1863 * the dsdb audit log as a failure. When in fact it is expected
1866 * Thankfully both TDB and LMDB seem to optimise for the empty
1870 TALLOC_FREE(mem_ctx
);
1872 if (txn_active
== false) {
1876 ret
= ldb_transaction_commit(sam_ctx
);
1877 if (ret
!= LDB_SUCCESS
) {
1878 DBG_ERR("Error (%d) %s, committing transaction,"
1879 " while updating successful logon accounting"
1882 ldb_errstring(sam_ctx
),
1883 ldb_dn_get_linearized(msg
->dn
));
1884 return NT_STATUS_INTERNAL_ERROR
;
1889 DBG_ERR("Failed to update badPwdCount, badPasswordTime or "
1890 "set lockoutTime on %s: %s\n",
1891 ldb_dn_get_linearized(msg
->dn
),
1892 ldb_errstring(sam_ctx
) != NULL
?
1893 ldb_errstring(sam_ctx
) :nt_errstr(status
));
1895 ret
= ldb_transaction_cancel(sam_ctx
);
1896 if (ret
!= LDB_SUCCESS
) {
1897 DBG_ERR("Error rolling back transaction,"
1898 " while updating bad password count"
1900 ldb_dn_get_linearized(msg
->dn
),
1901 ldb_errstring(sam_ctx
));
1904 TALLOC_FREE(mem_ctx
);