2 Unix SMB/CIFS implementation.
3 Authentication utility functions
4 Copyright (C) Volker Lendecke 2010
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/>.
22 #include "lib/util_unixsids.h"
23 #include "../lib/crypto/arcfour.h"
24 #include "../librpc/gen_ndr/netlogon.h"
25 #include "../libcli/security/security.h"
26 #include "rpc_client/util_netlogon.h"
27 #include "nsswitch/libwbclient/wbclient.h"
28 #include "lib/winbind_util.h"
32 #define DBGC_CLASS DBGC_AUTH
34 /***************************************************************************
35 Make a server_info struct. Free with TALLOC_FREE().
36 ***************************************************************************/
38 struct auth_serversupplied_info
*make_server_info(TALLOC_CTX
*mem_ctx
)
40 struct auth_serversupplied_info
*result
;
42 result
= talloc_zero(mem_ctx
, struct auth_serversupplied_info
);
44 DEBUG(0, ("talloc failed\n"));
48 /* Initialise the uid and gid values to something non-zero
49 which may save us from giving away root access if there
50 is a bug in allocating these fields. */
52 result
->utok
.uid
= -1;
53 result
->utok
.gid
= -1;
58 /****************************************************************************
59 inits a netr_SamInfo2 structure from an auth_serversupplied_info. sam2 must
60 already be initialized and is used as the talloc parent for its members.
61 *****************************************************************************/
63 NTSTATUS
serverinfo_to_SamInfo2(struct auth_serversupplied_info
*server_info
,
64 struct netr_SamInfo2
*sam2
)
66 struct netr_SamInfo3
*info3
= NULL
;
69 status
= copy_netr_SamInfo3(sam2
,
72 if (!NT_STATUS_IS_OK(status
)) {
76 if (server_info
->session_key
.length
) {
77 memcpy(info3
->base
.key
.key
,
78 server_info
->session_key
.data
,
79 MIN(sizeof(info3
->base
.key
.key
),
80 server_info
->session_key
.length
));
82 if (server_info
->lm_session_key
.length
) {
83 memcpy(info3
->base
.LMSessKey
.key
,
84 server_info
->lm_session_key
.data
,
85 MIN(sizeof(info3
->base
.LMSessKey
.key
),
86 server_info
->lm_session_key
.length
));
89 sam2
->base
= info3
->base
;
94 /****************************************************************************
95 inits a netr_SamInfo3 structure from an auth_serversupplied_info. sam3 must
96 already be initialized and is used as the talloc parent for its members.
97 *****************************************************************************/
99 NTSTATUS
serverinfo_to_SamInfo3(const struct auth_serversupplied_info
*server_info
,
100 struct netr_SamInfo3
*sam3
)
102 struct netr_SamInfo3
*info3
= NULL
;
105 status
= copy_netr_SamInfo3(sam3
,
108 if (!NT_STATUS_IS_OK(status
)) {
112 if (server_info
->session_key
.length
) {
113 memcpy(info3
->base
.key
.key
,
114 server_info
->session_key
.data
,
115 MIN(sizeof(info3
->base
.key
.key
),
116 server_info
->session_key
.length
));
118 if (server_info
->lm_session_key
.length
) {
119 memcpy(info3
->base
.LMSessKey
.key
,
120 server_info
->lm_session_key
.data
,
121 MIN(sizeof(info3
->base
.LMSessKey
.key
),
122 server_info
->lm_session_key
.length
));
125 sam3
->base
= info3
->base
;
133 /****************************************************************************
134 inits a netr_SamInfo6 structure from an auth_serversupplied_info. sam6 must
135 already be initialized and is used as the talloc parent for its members.
136 *****************************************************************************/
138 NTSTATUS
serverinfo_to_SamInfo6(struct auth_serversupplied_info
*server_info
,
139 struct netr_SamInfo6
*sam6
)
141 struct pdb_domain_info
*dominfo
;
142 struct netr_SamInfo3
*info3
= NULL
;
145 if ((pdb_capabilities() & PDB_CAP_ADS
) == 0) {
146 DEBUG(10,("Not adding validation info level 6 "
147 "without ADS passdb backend\n"));
148 return NT_STATUS_INVALID_INFO_CLASS
;
151 dominfo
= pdb_get_domain_info(sam6
);
152 if (dominfo
== NULL
) {
153 return NT_STATUS_NO_MEMORY
;
156 status
= copy_netr_SamInfo3(sam6
,
159 if (!NT_STATUS_IS_OK(status
)) {
163 if (server_info
->session_key
.length
) {
164 memcpy(info3
->base
.key
.key
,
165 server_info
->session_key
.data
,
166 MIN(sizeof(info3
->base
.key
.key
),
167 server_info
->session_key
.length
));
169 if (server_info
->lm_session_key
.length
) {
170 memcpy(info3
->base
.LMSessKey
.key
,
171 server_info
->lm_session_key
.data
,
172 MIN(sizeof(info3
->base
.LMSessKey
.key
),
173 server_info
->lm_session_key
.length
));
176 sam6
->base
= info3
->base
;
181 sam6
->dns_domainname
.string
= talloc_strdup(sam6
, dominfo
->dns_domain
);
182 if (sam6
->dns_domainname
.string
== NULL
) {
183 return NT_STATUS_NO_MEMORY
;
186 sam6
->principal_name
.string
= talloc_asprintf(
187 sam6
, "%s@%s", sam6
->base
.account_name
.string
,
188 sam6
->dns_domainname
.string
);
189 if (sam6
->principal_name
.string
== NULL
) {
190 return NT_STATUS_NO_MEMORY
;
196 static NTSTATUS
append_netr_SidAttr(TALLOC_CTX
*mem_ctx
,
197 struct netr_SidAttr
**sids
,
199 const struct dom_sid2
*asid
,
204 *sids
= talloc_realloc(mem_ctx
, *sids
, struct netr_SidAttr
, t
+ 1);
206 return NT_STATUS_NO_MEMORY
;
208 (*sids
)[t
].sid
= dom_sid_dup(*sids
, asid
);
209 if ((*sids
)[t
].sid
== NULL
) {
210 return NT_STATUS_NO_MEMORY
;
212 (*sids
)[t
].attributes
= attributes
;
218 /* Fills the samr_RidWithAttributeArray with the provided sids.
219 * If it happens that we have additional groups that do not belong
220 * to the domain, add their sids as extra sids */
221 static NTSTATUS
group_sids_to_info3(struct netr_SamInfo3
*info3
,
222 const struct dom_sid
*sids
,
225 uint32_t attributes
= SE_GROUP_MANDATORY
|
226 SE_GROUP_ENABLED_BY_DEFAULT
|
228 struct samr_RidWithAttributeArray
*groups
;
229 struct dom_sid
*domain_sid
;
235 domain_sid
= info3
->base
.domain_sid
;
236 groups
= &info3
->base
.groups
;
238 groups
->rids
= talloc_array(info3
,
239 struct samr_RidWithAttribute
, num_sids
);
241 return NT_STATUS_NO_MEMORY
;
244 for (i
= 0; i
< num_sids
; i
++) {
245 ok
= sid_peek_check_rid(domain_sid
, &sids
[i
], &rid
);
247 /* store domain group rid */
248 groups
->rids
[groups
->count
].rid
= rid
;
249 groups
->rids
[groups
->count
].attributes
= attributes
;
254 /* if this wasn't a domain sid, add it as extra sid */
255 status
= append_netr_SidAttr(info3
, &info3
->sids
,
257 &sids
[i
], attributes
);
258 if (!NT_STATUS_IS_OK(status
)) {
267 * Merge resource SIDs, if any, into the passed in info3 structure.
270 static NTSTATUS
merge_resource_sids(const struct PAC_LOGON_INFO
*logon_info
,
271 struct netr_SamInfo3
*info3
)
274 const struct PAC_DOMAIN_GROUP_MEMBERSHIP
*rg
= NULL
;
276 if (logon_info
->info3
.base
.user_flags
& NETLOGON_RESOURCE_GROUPS
) {
277 rg
= &logon_info
->resource_groups
;
284 if (rg
->domain_sid
== NULL
) {
285 DEBUG(10, ("Missing Resource Group Domain SID\n"));
286 return NT_STATUS_INVALID_PARAMETER
;
289 /* The IDL layer would be a better place to check this, but to
290 * guard the integer addition below, we double-check */
291 if (rg
->groups
.count
> 65535) {
292 DEBUG(10, ("Too much Resource Group RIDs %u\n",
293 (unsigned)rg
->groups
.count
));
294 return NT_STATUS_INVALID_PARAMETER
;
298 * If there are any resource groups (SID Compression) add
299 * them to the extra sids portion of the info3 in the PAC.
301 * This makes the info3 look like it would if we got the info
302 * from the DC rather than the PAC.
306 * Construct a SID for each RID in the list and then append it
309 for (i
= 0; i
< rg
->groups
.count
; i
++) {
311 struct dom_sid new_sid
;
312 uint32_t attributes
= rg
->groups
.rids
[i
].attributes
;
314 sid_compose(&new_sid
,
316 rg
->groups
.rids
[i
].rid
);
318 DEBUG(10, ("Adding SID %s to extra SIDS\n",
319 sid_string_dbg(&new_sid
)));
321 status
= append_netr_SidAttr(info3
, &info3
->sids
,
325 if (!NT_STATUS_IS_OK(status
)) {
326 DEBUG(1, ("failed to append SID %s to extra SIDS: %s\n",
327 sid_string_dbg(&new_sid
),
337 * Create a copy of an info3 struct from the struct PAC_LOGON_INFO,
338 * then merge resource SIDs, if any, into it. If successful return
339 * the created info3 struct.
342 NTSTATUS
create_info3_from_pac_logon_info(TALLOC_CTX
*mem_ctx
,
343 const struct PAC_LOGON_INFO
*logon_info
,
344 struct netr_SamInfo3
**pp_info3
)
347 struct netr_SamInfo3
*info3
= NULL
;
349 status
= copy_netr_SamInfo3(mem_ctx
,
352 if (!NT_STATUS_IS_OK(status
)) {
356 status
= merge_resource_sids(logon_info
, info3
);
357 if (!NT_STATUS_IS_OK(status
)) {
366 * Create a copy of an info6 struct from the PAC_UPN_DNS_INFO and PAC_LOGON_INFO
367 * then merge resource SIDs, if any, into it. If successful return the created
370 NTSTATUS
create_info6_from_pac(TALLOC_CTX
*mem_ctx
,
371 const struct PAC_LOGON_INFO
*logon_info
,
372 const struct PAC_UPN_DNS_INFO
*upn_dns_info
,
373 struct netr_SamInfo6
**pp_info6
)
376 struct netr_SamInfo6
*info6
= NULL
;
377 struct netr_SamInfo3
*info3
= NULL
;
379 info6
= talloc_zero(mem_ctx
, struct netr_SamInfo6
);
381 return NT_STATUS_NO_MEMORY
;
384 status
= copy_netr_SamInfo3(info6
,
387 if (!NT_STATUS_IS_OK(status
)) {
392 status
= merge_resource_sids(logon_info
, info3
);
393 if (!NT_STATUS_IS_OK(status
)) {
398 info6
->base
= info3
->base
;
399 info6
->sids
= info3
->sids
;
400 info6
->sidcount
= info3
->sidcount
;
402 if (upn_dns_info
!= NULL
) {
403 info6
->dns_domainname
.string
= talloc_strdup(info6
,
404 upn_dns_info
->dns_domain_name
);
405 if (info6
->dns_domainname
.string
== NULL
) {
407 return NT_STATUS_NO_MEMORY
;
409 info6
->principal_name
.string
= talloc_strdup(info6
,
410 upn_dns_info
->upn_name
);
411 if (info6
->principal_name
.string
== NULL
) {
413 return NT_STATUS_NO_MEMORY
;
422 * Check if this is a "Unix Users" domain user, or a
423 * "Unix Groups" domain group, we need to handle it
424 * in a special way if that's the case.
427 static NTSTATUS
SamInfo3_handle_sids(const char *username
,
428 const struct dom_sid
*user_sid
,
429 const struct dom_sid
*group_sid
,
430 struct netr_SamInfo3
*info3
,
431 struct dom_sid
*domain_sid
,
432 struct extra_auth_info
*extra
)
434 if (sid_check_is_in_unix_users(user_sid
)) {
435 /* in info3 you can only set rids for the user and the
436 * primary group, and the domain sid must be that of
439 * Store a completely bogus value here.
440 * The real SID is stored in the extra sids.
441 * Other code will know to look there if (-1) is found
443 info3
->base
.rid
= (uint32_t)(-1);
444 sid_copy(&extra
->user_sid
, user_sid
);
446 DEBUG(10, ("Unix User found. Rid marked as "
447 "special and sid (%s) saved as extra sid\n",
448 sid_string_dbg(user_sid
)));
450 sid_copy(domain_sid
, user_sid
);
451 sid_split_rid(domain_sid
, &info3
->base
.rid
);
454 if (is_null_sid(domain_sid
)) {
455 sid_copy(domain_sid
, get_global_sam_sid());
458 /* check if this is a "Unix Groups" domain group,
459 * if so we need special handling */
460 if (sid_check_is_in_unix_groups(group_sid
)) {
461 /* in info3 you can only set rids for the user and the
462 * primary group, and the domain sid must be that of
465 * Store a completely bogus value here.
466 * The real SID is stored in the extra sids.
467 * Other code will know to look there if (-1) is found
469 info3
->base
.primary_gid
= (uint32_t)(-1);
470 sid_copy(&extra
->pgid_sid
, group_sid
);
472 DEBUG(10, ("Unix Group found. Rid marked as "
473 "special and sid (%s) saved as extra sid\n",
474 sid_string_dbg(group_sid
)));
476 bool ok
= sid_peek_check_rid(domain_sid
, group_sid
,
477 &info3
->base
.primary_gid
);
479 DEBUG(1, ("The primary group domain sid(%s) does not "
480 "match the domain sid(%s) for %s(%s)\n",
481 sid_string_dbg(group_sid
),
482 sid_string_dbg(domain_sid
),
484 sid_string_dbg(user_sid
)));
485 return NT_STATUS_INVALID_SID
;
491 #define RET_NOMEM(ptr) do { \
493 TALLOC_FREE(info3); \
494 return NT_STATUS_NO_MEMORY; \
497 NTSTATUS
samu_to_SamInfo3(TALLOC_CTX
*mem_ctx
,
499 const char *login_server
,
500 struct netr_SamInfo3
**_info3
,
501 struct extra_auth_info
*extra
)
503 struct netr_SamInfo3
*info3
;
504 const struct dom_sid
*user_sid
;
505 const struct dom_sid
*group_sid
;
506 struct dom_sid domain_sid
;
507 struct dom_sid
*group_sids
;
508 uint32_t num_group_sids
= 0;
513 user_sid
= pdb_get_user_sid(samu
);
514 group_sid
= pdb_get_group_sid(samu
);
516 if (!user_sid
|| !group_sid
) {
517 DEBUG(1, ("Sam account is missing sids!\n"));
518 return NT_STATUS_UNSUCCESSFUL
;
521 info3
= talloc_zero(mem_ctx
, struct netr_SamInfo3
);
523 return NT_STATUS_NO_MEMORY
;
526 ZERO_STRUCT(domain_sid
);
528 status
= SamInfo3_handle_sids(pdb_get_username(samu
),
535 if (!NT_STATUS_IS_OK(status
)) {
540 unix_to_nt_time(&info3
->base
.logon_time
, pdb_get_logon_time(samu
));
541 unix_to_nt_time(&info3
->base
.logoff_time
, get_time_t_max());
542 unix_to_nt_time(&info3
->base
.kickoff_time
, get_time_t_max());
543 unix_to_nt_time(&info3
->base
.last_password_change
,
544 pdb_get_pass_last_set_time(samu
));
545 unix_to_nt_time(&info3
->base
.allow_password_change
,
546 pdb_get_pass_can_change_time(samu
));
547 unix_to_nt_time(&info3
->base
.force_password_change
,
548 pdb_get_pass_must_change_time(samu
));
550 tmp
= pdb_get_username(samu
);
552 info3
->base
.account_name
.string
= talloc_strdup(info3
, tmp
);
553 RET_NOMEM(info3
->base
.account_name
.string
);
555 tmp
= pdb_get_fullname(samu
);
557 info3
->base
.full_name
.string
= talloc_strdup(info3
, tmp
);
558 RET_NOMEM(info3
->base
.full_name
.string
);
560 tmp
= pdb_get_logon_script(samu
);
562 info3
->base
.logon_script
.string
= talloc_strdup(info3
, tmp
);
563 RET_NOMEM(info3
->base
.logon_script
.string
);
565 tmp
= pdb_get_profile_path(samu
);
567 info3
->base
.profile_path
.string
= talloc_strdup(info3
, tmp
);
568 RET_NOMEM(info3
->base
.profile_path
.string
);
570 tmp
= pdb_get_homedir(samu
);
572 info3
->base
.home_directory
.string
= talloc_strdup(info3
, tmp
);
573 RET_NOMEM(info3
->base
.home_directory
.string
);
575 tmp
= pdb_get_dir_drive(samu
);
577 info3
->base
.home_drive
.string
= talloc_strdup(info3
, tmp
);
578 RET_NOMEM(info3
->base
.home_drive
.string
);
581 info3
->base
.logon_count
= pdb_get_logon_count(samu
);
582 info3
->base
.bad_password_count
= pdb_get_bad_password_count(samu
);
584 info3
->base
.logon_domain
.string
= talloc_strdup(info3
,
585 pdb_get_domain(samu
));
586 RET_NOMEM(info3
->base
.logon_domain
.string
);
588 info3
->base
.domain_sid
= dom_sid_dup(info3
, &domain_sid
);
589 RET_NOMEM(info3
->base
.domain_sid
);
591 status
= pdb_enum_group_memberships(mem_ctx
, samu
,
594 if (!NT_STATUS_IS_OK(status
)) {
595 DEBUG(1, ("Failed to get groups from sam account.\n"));
600 if (num_group_sids
) {
601 status
= group_sids_to_info3(info3
, group_sids
, num_group_sids
);
602 if (!NT_STATUS_IS_OK(status
)) {
608 /* We don't need sids and gids after the conversion */
609 TALLOC_FREE(group_sids
);
613 /* FIXME: should we add other flags ? */
614 info3
->base
.user_flags
= NETLOGON_EXTRA_SIDS
;
617 info3
->base
.logon_server
.string
= talloc_strdup(info3
, login_server
);
618 RET_NOMEM(info3
->base
.logon_server
.string
);
621 info3
->base
.acct_flags
= pdb_get_acct_ctrl(samu
);
627 NTSTATUS
passwd_to_SamInfo3(TALLOC_CTX
*mem_ctx
,
628 const char *unix_username
,
629 const struct passwd
*pwd
,
630 struct netr_SamInfo3
**pinfo3
,
631 struct extra_auth_info
*extra
)
633 struct netr_SamInfo3
*info3
;
636 const char *domain_name
= NULL
;
637 const char *user_name
= NULL
;
638 struct dom_sid domain_sid
;
639 struct dom_sid user_sid
;
640 struct dom_sid group_sid
;
641 enum lsa_SidType type
;
642 uint32_t num_sids
= 0;
643 struct dom_sid
*user_sids
= NULL
;
647 tmp_ctx
= talloc_stackframe();
649 ok
= lookup_name_smbconf(tmp_ctx
,
657 status
= NT_STATUS_NO_SUCH_USER
;
661 if (type
!= SID_NAME_USER
) {
662 status
= NT_STATUS_NO_SUCH_USER
;
666 ok
= winbind_lookup_usersids(tmp_ctx
,
670 /* Check if winbind is running */
673 * Winbind is running and the first element of the user_sids
674 * is the primary group.
677 group_sid
= user_sids
[0];
681 * Winbind is not running, try to create the group_sid from the
686 * This can lead to a primary group of S-1-22-2-XX which
687 * will be rejected by other Samba code.
689 gid_to_sid(&group_sid
, pwd
->pw_gid
);
693 * If we are a unix group, or a wellknown/builtin alias,
694 * set the group_sid to the
695 * 'Domain Users' RID of 513 which will always resolve to a
698 if (sid_check_is_in_unix_groups(&group_sid
) ||
699 sid_check_is_in_builtin(&group_sid
) ||
700 sid_check_is_in_wellknown_domain(&group_sid
)) {
701 if (sid_check_is_in_unix_users(&user_sid
)) {
702 sid_compose(&group_sid
,
703 get_global_sam_sid(),
706 sid_copy(&domain_sid
, &user_sid
);
707 sid_split_rid(&domain_sid
, NULL
);
708 sid_compose(&group_sid
,
714 /* Make sure we have a valid group sid */
715 is_null
= is_null_sid(&group_sid
);
717 status
= NT_STATUS_NO_SUCH_USER
;
721 /* Construct a netr_SamInfo3 from the information we have */
722 info3
= talloc_zero(tmp_ctx
, struct netr_SamInfo3
);
724 status
= NT_STATUS_NO_MEMORY
;
728 info3
->base
.account_name
.string
= talloc_strdup(info3
, unix_username
);
729 if (info3
->base
.account_name
.string
== NULL
) {
730 status
= NT_STATUS_NO_MEMORY
;
734 ZERO_STRUCT(domain_sid
);
736 status
= SamInfo3_handle_sids(unix_username
,
743 if (!NT_STATUS_IS_OK(status
)) {
747 info3
->base
.domain_sid
= dom_sid_dup(info3
, &domain_sid
);
748 if (info3
->base
.domain_sid
== NULL
) {
749 status
= NT_STATUS_NO_MEMORY
;
753 ok
= sid_peek_check_rid(&domain_sid
, &group_sid
,
754 &info3
->base
.primary_gid
);
756 DEBUG(1, ("The primary group domain sid(%s) does not "
757 "match the domain sid(%s) for %s(%s)\n",
758 sid_string_dbg(&group_sid
),
759 sid_string_dbg(&domain_sid
),
761 sid_string_dbg(&user_sid
)));
762 status
= NT_STATUS_INVALID_SID
;
766 info3
->base
.acct_flags
= ACB_NORMAL
;
769 status
= group_sids_to_info3(info3
, user_sids
, num_sids
);
770 if (!NT_STATUS_IS_OK(status
)) {
775 *pinfo3
= talloc_steal(mem_ctx
, info3
);
777 status
= NT_STATUS_OK
;
779 talloc_free(tmp_ctx
);