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winbindd: allow wbinfo -a REALM\\user to work on a DC
[Samba.git] / source3 / winbindd / winbindd_pam.c
blob292f556e25babd590c25936c94e5b3b700e41270
1 /*
2 Unix SMB/CIFS implementation.
3
4 Winbind daemon - pam auth funcions
5
6 Copyright (C) Andrew Tridgell 2000
7 Copyright (C) Tim Potter 2001
8 Copyright (C) Andrew Bartlett 2001-2002
9 Copyright (C) Guenther Deschner 2005
10
11 This program is free software; you can redistribute it and/or modify
12 it under the terms of the GNU General Public License as published by
13 the Free Software Foundation; either version 3 of the License, or
14 (at your option) any later version.
15
16 This program is distributed in the hope that it will be useful,
17 but WITHOUT ANY WARRANTY; without even the implied warranty of
18 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 GNU General Public License for more details.
20
21 You should have received a copy of the GNU General Public License
22 along with this program. If not, see <http://www.gnu.org/licenses/>.
23 */
24
25 #include "includes.h"
26 #include "winbindd.h"
27 #include "../libcli/auth/libcli_auth.h"
28 #include "../librpc/gen_ndr/ndr_samr_c.h"
29 #include "rpc_client/cli_pipe.h"
30 #include "rpc_client/cli_samr.h"
31 #include "../librpc/gen_ndr/ndr_netlogon.h"
32 #include "rpc_client/cli_netlogon.h"
33 #include "smb_krb5.h"
34 #include "../lib/crypto/arcfour.h"
35 #include "../libcli/security/security.h"
36 #include "ads.h"
37 #include "../librpc/gen_ndr/krb5pac.h"
38 #include "passdb/machine_sid.h"
39 #include "auth.h"
40 #include "../lib/tsocket/tsocket.h"
41 #include "auth/kerberos/pac_utils.h"
42 #include "auth/gensec/gensec.h"
43 #include "librpc/crypto/gse_krb5.h"
44 #include "lib/afs/afs_funcs.h"
45 #include "libsmb/samlogon_cache.h"
46
47 #undef DBGC_CLASS
48 #define DBGC_CLASS DBGC_WINBIND
49
50 #define LOGON_KRB5_FAIL_CLOCK_SKEW 0x02000000
51
52 static NTSTATUS append_info3_as_txt(TALLOC_CTX *mem_ctx,
53 struct winbindd_response *resp,
54 struct netr_SamInfo3 *info3)
55 {
56 char *ex;
57 uint32_t i;
58
59 resp->data.auth.info3.logon_time =
60 nt_time_to_unix(info3->base.logon_time);
61 resp->data.auth.info3.logoff_time =
62 nt_time_to_unix(info3->base.logoff_time);
63 resp->data.auth.info3.kickoff_time =
64 nt_time_to_unix(info3->base.kickoff_time);
65 resp->data.auth.info3.pass_last_set_time =
66 nt_time_to_unix(info3->base.last_password_change);
67 resp->data.auth.info3.pass_can_change_time =
68 nt_time_to_unix(info3->base.allow_password_change);
69 resp->data.auth.info3.pass_must_change_time =
70 nt_time_to_unix(info3->base.force_password_change);
71
72 resp->data.auth.info3.logon_count = info3->base.logon_count;
73 resp->data.auth.info3.bad_pw_count = info3->base.bad_password_count;
74
75 resp->data.auth.info3.user_rid = info3->base.rid;
76 resp->data.auth.info3.group_rid = info3->base.primary_gid;
77 sid_to_fstring(resp->data.auth.info3.dom_sid, info3->base.domain_sid);
78
79 resp->data.auth.info3.num_groups = info3->base.groups.count;
80 resp->data.auth.info3.user_flgs = info3->base.user_flags;
81
82 resp->data.auth.info3.acct_flags = info3->base.acct_flags;
83 resp->data.auth.info3.num_other_sids = info3->sidcount;
84
85 fstrcpy(resp->data.auth.info3.user_name,
86 info3->base.account_name.string);
87 fstrcpy(resp->data.auth.info3.full_name,
88 info3->base.full_name.string);
89 fstrcpy(resp->data.auth.info3.logon_script,
90 info3->base.logon_script.string);
91 fstrcpy(resp->data.auth.info3.profile_path,
92 info3->base.profile_path.string);
93 fstrcpy(resp->data.auth.info3.home_dir,
94 info3->base.home_directory.string);
95 fstrcpy(resp->data.auth.info3.dir_drive,
96 info3->base.home_drive.string);
97
98 fstrcpy(resp->data.auth.info3.logon_srv,
99 info3->base.logon_server.string);
100 fstrcpy(resp->data.auth.info3.logon_dom,
101 info3->base.logon_domain.string);
102
103 ex = talloc_strdup(mem_ctx, "");
104 NT_STATUS_HAVE_NO_MEMORY(ex);
105
106 for (i=0; i < info3->base.groups.count; i++) {
107 ex = talloc_asprintf_append_buffer(ex, "0x%08X:0x%08X\n",
108 info3->base.groups.rids[i].rid,
109 info3->base.groups.rids[i].attributes);
110 NT_STATUS_HAVE_NO_MEMORY(ex);
111 }
112
113 for (i=0; i < info3->sidcount; i++) {
114 char *sid;
115
116 sid = dom_sid_string(mem_ctx, info3->sids[i].sid);
117 NT_STATUS_HAVE_NO_MEMORY(sid);
118
119 ex = talloc_asprintf_append_buffer(ex, "%s:0x%08X\n",
120 sid,
121 info3->sids[i].attributes);
122 NT_STATUS_HAVE_NO_MEMORY(ex);
123
124 talloc_free(sid);
125 }
126
127 resp->extra_data.data = ex;
128 resp->length += talloc_get_size(ex);
129
130 return NT_STATUS_OK;
131 }
132
133 static NTSTATUS append_info3_as_ndr(TALLOC_CTX *mem_ctx,
134 struct winbindd_response *resp,
135 struct netr_SamInfo3 *info3)
136 {
137 DATA_BLOB blob;
138 enum ndr_err_code ndr_err;
139
140 ndr_err = ndr_push_struct_blob(&blob, mem_ctx, info3,
141 (ndr_push_flags_fn_t)ndr_push_netr_SamInfo3);
142 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
143 DEBUG(0,("append_info3_as_ndr: failed to append\n"));
144 return ndr_map_error2ntstatus(ndr_err);
145 }
146
147 resp->extra_data.data = blob.data;
148 resp->length += blob.length;
149
150 return NT_STATUS_OK;
151 }
152
153 static NTSTATUS append_unix_username(TALLOC_CTX *mem_ctx,
154 struct winbindd_response *resp,
155 const struct netr_SamInfo3 *info3,
156 const char *name_domain,
157 const char *name_user)
158 {
159 /* We've been asked to return the unix username, per
160 'winbind use default domain' settings and the like */
161
162 const char *nt_username, *nt_domain;
163
164 nt_domain = talloc_strdup(mem_ctx, info3->base.logon_domain.string);
165 if (!nt_domain) {
166 /* If the server didn't give us one, just use the one
167 * we sent them */
168 nt_domain = name_domain;
169 }
170
171 nt_username = talloc_strdup(mem_ctx, info3->base.account_name.string);
172 if (!nt_username) {
173 /* If the server didn't give us one, just use the one
174 * we sent them */
175 nt_username = name_user;
176 }
177
178 fill_domain_username(resp->data.auth.unix_username,
179 nt_domain, nt_username, true);
180
181 DEBUG(5, ("Setting unix username to [%s]\n",
182 resp->data.auth.unix_username));
183
184 return NT_STATUS_OK;
185 }
186
187 static NTSTATUS append_afs_token(TALLOC_CTX *mem_ctx,
188 struct winbindd_response *resp,
189 const struct netr_SamInfo3 *info3,
190 const char *name_domain,
191 const char *name_user)
192 {
193 char *afsname = NULL;
194 char *cell;
195 char *token;
196
197 afsname = talloc_strdup(mem_ctx, lp_afs_username_map());
198 if (afsname == NULL) {
199 return NT_STATUS_NO_MEMORY;
200 }
201
202 afsname = talloc_string_sub(mem_ctx,
203 lp_afs_username_map(),
204 "%D", name_domain);
205 afsname = talloc_string_sub(mem_ctx, afsname,
206 "%u", name_user);
207 afsname = talloc_string_sub(mem_ctx, afsname,
208 "%U", name_user);
209
210 {
211 struct dom_sid user_sid;
212 fstring sidstr;
213
214 sid_compose(&user_sid, info3->base.domain_sid,
215 info3->base.rid);
216 sid_to_fstring(sidstr, &user_sid);
217 afsname = talloc_string_sub(mem_ctx, afsname,
218 "%s", sidstr);
219 }
220
221 if (afsname == NULL) {
222 return NT_STATUS_NO_MEMORY;
223 }
224
225 if (!strlower_m(afsname)) {
226 return NT_STATUS_INVALID_PARAMETER;
227 }
228
229 DEBUG(10, ("Generating token for user %s\n", afsname));
230
231 cell = strchr(afsname, '@');
232
233 if (cell == NULL) {
234 return NT_STATUS_NO_MEMORY;
235 }
236
237 *cell = '\0';
238 cell += 1;
239
240 token = afs_createtoken_str(afsname, cell);
241 if (token == NULL) {
242 return NT_STATUS_OK;
243 }
244 resp->extra_data.data = talloc_strdup(mem_ctx, token);
245 if (resp->extra_data.data == NULL) {
246 return NT_STATUS_NO_MEMORY;
247 }
248 resp->length += strlen((const char *)resp->extra_data.data)+1;
249
250 return NT_STATUS_OK;
251 }
252
253 static NTSTATUS check_info3_in_group(struct netr_SamInfo3 *info3,
254 const char *group_sid)
255 /**
256 * Check whether a user belongs to a group or list of groups.
257 *
258 * @param mem_ctx talloc memory context.
259 * @param info3 user information, including group membership info.
260 * @param group_sid One or more groups , separated by commas.
261 *
262 * @return NT_STATUS_OK on success,
263 * NT_STATUS_LOGON_FAILURE if the user does not belong,
264 * or other NT_STATUS_IS_ERR(status) for other kinds of failure.
265 */
266 {
267 struct dom_sid *require_membership_of_sid;
268 uint32_t num_require_membership_of_sid;
269 char *req_sid;
270 const char *p;
271 struct dom_sid sid;
272 size_t i;
273 struct security_token *token;
274 TALLOC_CTX *frame = talloc_stackframe();
275 NTSTATUS status;
276
277 /* Parse the 'required group' SID */
278
279 if (!group_sid || !group_sid[0]) {
280 /* NO sid supplied, all users may access */
281 TALLOC_FREE(frame);
282 return NT_STATUS_OK;
283 }
284
285 token = talloc_zero(talloc_tos(), struct security_token);
286 if (token == NULL) {
287 DEBUG(0, ("talloc failed\n"));
288 TALLOC_FREE(frame);
289 return NT_STATUS_NO_MEMORY;
290 }
291
292 num_require_membership_of_sid = 0;
293 require_membership_of_sid = NULL;
294
295 p = group_sid;
296
297 while (next_token_talloc(talloc_tos(), &p, &req_sid, ",")) {
298 if (!string_to_sid(&sid, req_sid)) {
299 DEBUG(0, ("check_info3_in_group: could not parse %s "
300 "as a SID!", req_sid));
301 TALLOC_FREE(frame);
302 return NT_STATUS_INVALID_PARAMETER;
303 }
304
305 status = add_sid_to_array(talloc_tos(), &sid,
306 &require_membership_of_sid,
307 &num_require_membership_of_sid);
308 if (!NT_STATUS_IS_OK(status)) {
309 DEBUG(0, ("add_sid_to_array failed\n"));
310 TALLOC_FREE(frame);
311 return status;
312 }
313 }
314
315 status = sid_array_from_info3(talloc_tos(), info3,
316 &token->sids,
317 &token->num_sids,
318 true);
319 if (!NT_STATUS_IS_OK(status)) {
320 TALLOC_FREE(frame);
321 return status;
322 }
323
324 if (!NT_STATUS_IS_OK(status = add_aliases(get_global_sam_sid(),
325 token))
326 || !NT_STATUS_IS_OK(status = add_aliases(&global_sid_Builtin,
327 token))) {
328 DEBUG(3, ("could not add aliases: %s\n",
329 nt_errstr(status)));
330 TALLOC_FREE(frame);
331 return status;
332 }
333
334 security_token_debug(DBGC_CLASS, 10, token);
335
336 for (i=0; i<num_require_membership_of_sid; i++) {
337 DEBUG(10, ("Checking SID %s\n", sid_string_dbg(
338 &require_membership_of_sid[i])));
339 if (nt_token_check_sid(&require_membership_of_sid[i],
340 token)) {
341 DEBUG(10, ("Access ok\n"));
342 TALLOC_FREE(frame);
343 return NT_STATUS_OK;
344 }
345 }
346
347 /* Do not distinguish this error from a wrong username/pw */
348
349 TALLOC_FREE(frame);
350 return NT_STATUS_LOGON_FAILURE;
351 }
352
353 struct winbindd_domain *find_auth_domain(uint8_t flags,
354 const char *domain_name)
355 {
356 struct winbindd_domain *domain;
357
358 if (IS_DC) {
359 domain = find_domain_from_name_noinit(domain_name);
360 if (domain == NULL) {
361 DEBUG(3, ("Authentication for domain [%s] refused "
362 "as it is not a trusted domain\n",
363 domain_name));
364 }
365 return domain;
366 }
367
368 if (strequal(domain_name, get_global_sam_name())) {
369 return find_domain_from_name_noinit(domain_name);
370 }
371
372 /* we can auth against trusted domains */
373 if (flags & WBFLAG_PAM_CONTACT_TRUSTDOM) {
374 domain = find_domain_from_name_noinit(domain_name);
375 if (domain == NULL) {
376 DEBUG(3, ("Authentication for domain [%s] skipped "
377 "as it is not a trusted domain\n",
378 domain_name));
379 } else {
380 return domain;
381 }
382 }
383
384 return find_our_domain();
385 }
386
387 static void fake_password_policy(struct winbindd_response *r,
388 const struct netr_SamBaseInfo *bi)
389 {
390 NTTIME min_password_age;
391 NTTIME max_password_age;
392
393 if (bi->allow_password_change > bi->last_password_change) {
394 min_password_age = bi->allow_password_change -
395 bi->last_password_change;
396 } else {
397 min_password_age = 0;
398 }
399
400 if (bi->force_password_change > bi->last_password_change) {
401 max_password_age = bi->force_password_change -
402 bi->last_password_change;
403 } else {
404 max_password_age = 0;
405 }
406
407 r->data.auth.policy.min_length_password = 0;
408 r->data.auth.policy.password_history = 0;
409 r->data.auth.policy.password_properties = 0;
410 r->data.auth.policy.expire =
411 nt_time_to_unix_abs(&max_password_age);
412 r->data.auth.policy.min_passwordage =
413 nt_time_to_unix_abs(&min_password_age);
414 }
415
416 static void fill_in_password_policy(struct winbindd_response *r,
417 const struct samr_DomInfo1 *p)
418 {
419 r->data.auth.policy.min_length_password =
420 p->min_password_length;
421 r->data.auth.policy.password_history =
422 p->password_history_length;
423 r->data.auth.policy.password_properties =
424 p->password_properties;
425 r->data.auth.policy.expire =
426 nt_time_to_unix_abs((const NTTIME *)&(p->max_password_age));
427 r->data.auth.policy.min_passwordage =
428 nt_time_to_unix_abs((const NTTIME *)&(p->min_password_age));
429 }
430
431 static NTSTATUS fillup_password_policy(struct winbindd_domain *domain,
432 struct winbindd_response *response)
433 {
434 TALLOC_CTX *frame = talloc_stackframe();
435 NTSTATUS status;
436 struct samr_DomInfo1 password_policy;
437
438 if ( !winbindd_can_contact_domain( domain ) ) {
439 DEBUG(5,("fillup_password_policy: No inbound trust to "
440 "contact domain %s\n", domain->name));
441 status = NT_STATUS_NOT_SUPPORTED;
442 goto done;
443 }
444
445 status = wb_cache_password_policy(domain, talloc_tos(),
446 &password_policy);
447 if (NT_STATUS_IS_ERR(status)) {
448 goto done;
449 }
450
451 fill_in_password_policy(response, &password_policy);
452
453 done:
454 TALLOC_FREE(frame);
455 return NT_STATUS_OK;
456 }
457
458 static NTSTATUS get_max_bad_attempts_from_lockout_policy(struct winbindd_domain *domain,
459 TALLOC_CTX *mem_ctx,
460 uint16_t *lockout_threshold)
461 {
462 NTSTATUS status = NT_STATUS_UNSUCCESSFUL;
463 struct samr_DomInfo12 lockout_policy;
464
465 *lockout_threshold = 0;
466
467 status = wb_cache_lockout_policy(domain, mem_ctx, &lockout_policy);
468 if (NT_STATUS_IS_ERR(status)) {
469 return status;
470 }
471
472 *lockout_threshold = lockout_policy.lockout_threshold;
473
474 return NT_STATUS_OK;
475 }
476
477 static NTSTATUS get_pwd_properties(struct winbindd_domain *domain,
478 TALLOC_CTX *mem_ctx,
479 uint32_t *password_properties)
480 {
481 NTSTATUS status = NT_STATUS_UNSUCCESSFUL;
482 struct samr_DomInfo1 password_policy;
483
484 *password_properties = 0;
485
486 status = wb_cache_password_policy(domain, mem_ctx, &password_policy);
487 if (NT_STATUS_IS_ERR(status)) {
488 return status;
489 }
490
491 *password_properties = password_policy.password_properties;
492
493 return NT_STATUS_OK;
494 }
495
496 #ifdef HAVE_KRB5
497
498 static const char *generate_krb5_ccache(TALLOC_CTX *mem_ctx,
499 const char *type,
500 uid_t uid,
501 const char **user_ccache_file)
502 {
503 /* accept FILE and WRFILE as krb5_cc_type from the client and then
504 * build the full ccname string based on the user's uid here -
505 * Guenther*/
506
507 const char *gen_cc = NULL;
508
509 if (uid != -1) {
510 if (strequal(type, "FILE")) {
511 gen_cc = talloc_asprintf(
512 mem_ctx, "FILE:/tmp/krb5cc_%d", uid);
513 }
514 if (strequal(type, "WRFILE")) {
515 gen_cc = talloc_asprintf(
516 mem_ctx, "WRFILE:/tmp/krb5cc_%d", uid);
517 }
518 if (strequal(type, "KEYRING")) {
519 gen_cc = talloc_asprintf(
520 mem_ctx, "KEYRING:persistent:%d", uid);
521 }
522
523 if (strnequal(type, "FILE:/", 6) ||
524 strnequal(type, "WRFILE:/", 8) ||
525 strnequal(type, "DIR:/", 5)) {
526
527 /* we allow only one "%u" substitution */
528
529 char *p;
530
531 p = strchr(type, '%');
532 if (p != NULL) {
533
534 p++;
535
536 if (p != NULL && *p == 'u' && strchr(p, '%') == NULL) {
537 char uid_str[sizeof("18446744073709551615")];
538
539 snprintf(uid_str, sizeof(uid_str), "%u", uid);
540
541 gen_cc = talloc_string_sub2(mem_ctx,
542 type,
543 "%u",
544 uid_str,
545 /* remove_unsafe_characters */
546 false,
547 /* replace_once */
548 true,
549 /* allow_trailing_dollar */
550 false);
551 }
552 }
553 }
554 }
555
556 *user_ccache_file = gen_cc;
557
558 if (gen_cc == NULL) {
559 gen_cc = talloc_strdup(mem_ctx, "MEMORY:winbindd_pam_ccache");
560 }
561 if (gen_cc == NULL) {
562 DEBUG(0,("out of memory\n"));
563 return NULL;
564 }
565
566 DEBUG(10, ("using ccache: %s%s\n", gen_cc,
567 (*user_ccache_file == NULL) ? " (internal)":""));
568
569 return gen_cc;
570 }
571
572 #endif
573
574 uid_t get_uid_from_request(struct winbindd_request *request)
575 {
576 uid_t uid;
577
578 uid = request->data.auth.uid;
579
580 if (uid == (uid_t)-1) {
581 DEBUG(1,("invalid uid: '%u'\n", (unsigned int)uid));
582 return -1;
583 }
584 return uid;
585 }
586
587 /**********************************************************************
588 Authenticate a user with a clear text password using Kerberos and fill up
589 ccache if required
590 **********************************************************************/
591
592 static NTSTATUS winbindd_raw_kerberos_login(TALLOC_CTX *mem_ctx,
593 struct winbindd_domain *domain,
594 const char *user,
595 const char *pass,
596 const char *krb5_cc_type,
597 uid_t uid,
598 struct netr_SamInfo3 **info3,
599 fstring krb5ccname)
600 {
601 #ifdef HAVE_KRB5
602 NTSTATUS result = NT_STATUS_UNSUCCESSFUL;
603 krb5_error_code krb5_ret;
604 const char *cc = NULL;
605 const char *principal_s = NULL;
606 const char *service = NULL;
607 char *realm = NULL;
608 fstring name_domain, name_user;
609 time_t ticket_lifetime = 0;
610 time_t renewal_until = 0;
611 ADS_STRUCT *ads;
612 time_t time_offset = 0;
613 const char *user_ccache_file;
614 struct PAC_LOGON_INFO *logon_info = NULL;
615 struct PAC_DATA *pac_data = NULL;
616 struct PAC_DATA_CTR *pac_data_ctr = NULL;
617 const char *local_service;
618 int i;
619 struct netr_SamInfo3 *info3_copy = NULL;
620
621 *info3 = NULL;
622
623 if (domain->alt_name == NULL) {
624 return NT_STATUS_INVALID_PARAMETER;
625 }
626
627 /* 1st step:
628 * prepare a krb5_cc_cache string for the user */
629
630 if (uid == -1) {
631 DEBUG(0,("no valid uid\n"));
632 }
633
634 cc = generate_krb5_ccache(mem_ctx,
635 krb5_cc_type,
636 uid,
637 &user_ccache_file);
638 if (cc == NULL) {
639 return NT_STATUS_NO_MEMORY;
640 }
641
642
643 /* 2nd step:
644 * get kerberos properties */
645
646 if (domain->private_data) {
647 ads = (ADS_STRUCT *)domain->private_data;
648 time_offset = ads->auth.time_offset;
649 }
650
651
652 /* 3rd step:
653 * do kerberos auth and setup ccache as the user */
654
655 parse_domain_user(user, name_domain, name_user);
656
657 realm = talloc_strdup(mem_ctx, domain->alt_name);
658 if (realm == NULL) {
659 return NT_STATUS_NO_MEMORY;
660 }
661
662 if (!strupper_m(realm)) {
663 return NT_STATUS_INVALID_PARAMETER;
664 }
665
666 principal_s = talloc_asprintf(mem_ctx, "%s@%s", name_user, realm);
667 if (principal_s == NULL) {
668 return NT_STATUS_NO_MEMORY;
669 }
670
671 service = talloc_asprintf(mem_ctx, "%s/%s@%s", KRB5_TGS_NAME, realm, realm);
672 if (service == NULL) {
673 return NT_STATUS_NO_MEMORY;
674 }
675
676 local_service = talloc_asprintf(mem_ctx, "%s$@%s",
677 lp_netbios_name(), lp_realm());
678 if (local_service == NULL) {
679 return NT_STATUS_NO_MEMORY;
680 }
681
682
683 /* if this is a user ccache, we need to act as the user to let the krb5
684 * library handle the chown, etc. */
685
686 /************************ ENTERING NON-ROOT **********************/
687
688 if (user_ccache_file != NULL) {
689 set_effective_uid(uid);
690 DEBUG(10,("winbindd_raw_kerberos_login: uid is %d\n", uid));
691 }
692
693 result = kerberos_return_pac(mem_ctx,
694 principal_s,
695 pass,
696 time_offset,
697 &ticket_lifetime,
698 &renewal_until,
699 cc,
700 true,
701 true,
702 WINBINDD_PAM_AUTH_KRB5_RENEW_TIME,
703 NULL,
704 local_service,
705 &pac_data_ctr);
706 if (user_ccache_file != NULL) {
707 gain_root_privilege();
708 }
709
710 /************************ RETURNED TO ROOT **********************/
711
712 if (!NT_STATUS_IS_OK(result)) {
713 goto failed;
714 }
715
716 if (pac_data_ctr == NULL) {
717 goto failed;
718 }
719
720 pac_data = pac_data_ctr->pac_data;
721 if (pac_data == NULL) {
722 goto failed;
723 }
724
725 for (i=0; i < pac_data->num_buffers; i++) {
726
727 if (pac_data->buffers[i].type != PAC_TYPE_LOGON_INFO) {
728 continue;
729 }
730
731 logon_info = pac_data->buffers[i].info->logon_info.info;
732 if (!logon_info) {
733 return NT_STATUS_INVALID_PARAMETER;
734 }
735
736 break;
737 }
738
739 if (logon_info == NULL) {
740 DEBUG(10,("Missing logon_info in ticket of %s\n",
741 principal_s));
742 return NT_STATUS_INVALID_PARAMETER;
743 }
744
745 DEBUG(10,("winbindd_raw_kerberos_login: winbindd validated ticket of %s\n",
746 principal_s));
747
748 result = create_info3_from_pac_logon_info(mem_ctx, logon_info, &info3_copy);
749 if (!NT_STATUS_IS_OK(result)) {
750 goto failed;
751 }
752
753 /* if we had a user's ccache then return that string for the pam
754 * environment */
755
756 if (user_ccache_file != NULL) {
757
758 fstrcpy(krb5ccname, user_ccache_file);
759
760 result = add_ccache_to_list(principal_s,
761 cc,
762 service,
763 user,
764 pass,
765 realm,
766 uid,
767 time(NULL),
768 ticket_lifetime,
769 renewal_until,
770 false);
771
772 if (!NT_STATUS_IS_OK(result)) {
773 DEBUG(10,("winbindd_raw_kerberos_login: failed to add ccache to list: %s\n",
774 nt_errstr(result)));
775 }
776 } else {
777
778 /* need to delete the memory cred cache, it is not used anymore */
779
780 krb5_ret = ads_kdestroy(cc);
781 if (krb5_ret) {
782 DEBUG(3,("winbindd_raw_kerberos_login: "
783 "could not destroy krb5 credential cache: "
784 "%s\n", error_message(krb5_ret)));
785 }
786
787 }
788 *info3 = info3_copy;
789 return NT_STATUS_OK;
790
791 failed:
792 /*
793 * Do not delete an existing valid credential cache, if the user
794 * e.g. enters a wrong password
795 */
796 if ((strequal(krb5_cc_type, "FILE") || strequal(krb5_cc_type, "WRFILE"))
797 && user_ccache_file != NULL) {
798 return result;
799 }
800
801 /* we could have created a new credential cache with a valid tgt in it
802 * but we werent able to get or verify the service ticket for this
803 * local host and therefor didn't get the PAC, we need to remove that
804 * cache entirely now */
805
806 krb5_ret = ads_kdestroy(cc);
807 if (krb5_ret) {
808 DEBUG(3,("winbindd_raw_kerberos_login: "
809 "could not destroy krb5 credential cache: "
810 "%s\n", error_message(krb5_ret)));
811 }
812
813 if (!NT_STATUS_IS_OK(remove_ccache(user))) {
814 DEBUG(3,("winbindd_raw_kerberos_login: "
815 "could not remove ccache for user %s\n",
816 user));
817 }
818
819 return result;
820 #else
821 return NT_STATUS_NOT_SUPPORTED;
822 #endif /* HAVE_KRB5 */
823 }
824
825 /****************************************************************
826 ****************************************************************/
827
828 bool check_request_flags(uint32_t flags)
829 {
830 uint32_t flags_edata = WBFLAG_PAM_AFS_TOKEN |
831 WBFLAG_PAM_INFO3_TEXT |
832 WBFLAG_PAM_INFO3_NDR;
833
834 if ( ( (flags & flags_edata) == WBFLAG_PAM_AFS_TOKEN) ||
835 ( (flags & flags_edata) == WBFLAG_PAM_INFO3_NDR) ||
836 ( (flags & flags_edata) == WBFLAG_PAM_INFO3_TEXT)||
837 !(flags & flags_edata) ) {
838 return true;
839 }
840
841 DEBUG(1, ("check_request_flags: invalid request flags[0x%08X]\n",
842 flags));
843
844 return false;
845 }
846
847 /****************************************************************
848 ****************************************************************/
849
850 NTSTATUS append_auth_data(TALLOC_CTX *mem_ctx,
851 struct winbindd_response *resp,
852 uint32_t request_flags,
853 struct netr_SamInfo3 *info3,
854 const char *name_domain,
855 const char *name_user)
856 {
857 NTSTATUS result;
858
859 if (request_flags & WBFLAG_PAM_USER_SESSION_KEY) {
860 memcpy(resp->data.auth.user_session_key,
861 info3->base.key.key,
862 sizeof(resp->data.auth.user_session_key)
863 /* 16 */);
864 }
865
866 if (request_flags & WBFLAG_PAM_LMKEY) {
867 memcpy(resp->data.auth.first_8_lm_hash,
868 info3->base.LMSessKey.key,
869 sizeof(resp->data.auth.first_8_lm_hash)
870 /* 8 */);
871 }
872
873 if (request_flags & WBFLAG_PAM_UNIX_NAME) {
874 result = append_unix_username(mem_ctx, resp,
875 info3, name_domain, name_user);
876 if (!NT_STATUS_IS_OK(result)) {
877 DEBUG(10,("Failed to append Unix Username: %s\n",
878 nt_errstr(result)));
879 return result;
880 }
881 }
882
883 /* currently, anything from here on potentially overwrites extra_data. */
884
885 if (request_flags & WBFLAG_PAM_INFO3_NDR) {
886 result = append_info3_as_ndr(mem_ctx, resp, info3);
887 if (!NT_STATUS_IS_OK(result)) {
888 DEBUG(10,("Failed to append INFO3 (NDR): %s\n",
889 nt_errstr(result)));
890 return result;
891 }
892 }
893
894 if (request_flags & WBFLAG_PAM_INFO3_TEXT) {
895 result = append_info3_as_txt(mem_ctx, resp, info3);
896 if (!NT_STATUS_IS_OK(result)) {
897 DEBUG(10,("Failed to append INFO3 (TXT): %s\n",
898 nt_errstr(result)));
899 return result;
900 }
901 }
902
903 if (request_flags & WBFLAG_PAM_AFS_TOKEN) {
904 result = append_afs_token(mem_ctx, resp,
905 info3, name_domain, name_user);
906 if (!NT_STATUS_IS_OK(result)) {
907 DEBUG(10,("Failed to append AFS token: %s\n",
908 nt_errstr(result)));
909 return result;
910 }
911 }
912
913 return NT_STATUS_OK;
914 }
915
916 static NTSTATUS winbindd_dual_pam_auth_cached(struct winbindd_domain *domain,
917 struct winbindd_cli_state *state,
918 struct netr_SamInfo3 **info3)
919 {
920 NTSTATUS result = NT_STATUS_LOGON_FAILURE;
921 uint16_t max_allowed_bad_attempts;
922 fstring name_domain, name_user;
923 struct dom_sid sid;
924 enum lsa_SidType type;
925 uchar new_nt_pass[NT_HASH_LEN];
926 const uint8_t *cached_nt_pass;
927 const uint8_t *cached_salt;
928 struct netr_SamInfo3 *my_info3;
929 time_t kickoff_time, must_change_time;
930 bool password_good = false;
931 #ifdef HAVE_KRB5
932 struct winbindd_tdc_domain *tdc_domain = NULL;
933 #endif
934
935 *info3 = NULL;
936
937 ZERO_STRUCTP(info3);
938
939 DEBUG(10,("winbindd_dual_pam_auth_cached\n"));
940
941 /* Parse domain and username */
942
943 parse_domain_user(state->request->data.auth.user, name_domain, name_user);
944
945
946 if (!lookup_cached_name(name_domain,
947 name_user,
948 &sid,
949 &type)) {
950 DEBUG(10,("winbindd_dual_pam_auth_cached: no such user in the cache\n"));
951 return NT_STATUS_NO_SUCH_USER;
952 }
953
954 if (type != SID_NAME_USER) {
955 DEBUG(10,("winbindd_dual_pam_auth_cached: not a user (%s)\n", sid_type_lookup(type)));
956 return NT_STATUS_LOGON_FAILURE;
957 }
958
959 result = winbindd_get_creds(domain,
960 state->mem_ctx,
961 &sid,
962 &my_info3,
963 &cached_nt_pass,
964 &cached_salt);
965 if (!NT_STATUS_IS_OK(result)) {
966 DEBUG(10,("winbindd_dual_pam_auth_cached: failed to get creds: %s\n", nt_errstr(result)));
967 return result;
968 }
969
970 *info3 = my_info3;
971
972 E_md4hash(state->request->data.auth.pass, new_nt_pass);
973
974 dump_data_pw("new_nt_pass", new_nt_pass, NT_HASH_LEN);
975 dump_data_pw("cached_nt_pass", cached_nt_pass, NT_HASH_LEN);
976 if (cached_salt) {
977 dump_data_pw("cached_salt", cached_salt, NT_HASH_LEN);
978 }
979
980 if (cached_salt) {
981 /* In this case we didn't store the nt_hash itself,
982 but the MD5 combination of salt + nt_hash. */
983 uchar salted_hash[NT_HASH_LEN];
984 E_md5hash(cached_salt, new_nt_pass, salted_hash);
985
986 password_good = (memcmp(cached_nt_pass, salted_hash,
987 NT_HASH_LEN) == 0);
988 } else {
989 /* Old cached cred - direct store of nt_hash (bad bad bad !). */
990 password_good = (memcmp(cached_nt_pass, new_nt_pass,
991 NT_HASH_LEN) == 0);
992 }
993
994 if (password_good) {
995
996 /* User *DOES* know the password, update logon_time and reset
997 * bad_pw_count */
998
999 my_info3->base.user_flags |= NETLOGON_CACHED_ACCOUNT;
1000
1001 if (my_info3->base.acct_flags & ACB_AUTOLOCK) {
1002 return NT_STATUS_ACCOUNT_LOCKED_OUT;
1003 }
1004
1005 if (my_info3->base.acct_flags & ACB_DISABLED) {
1006 return NT_STATUS_ACCOUNT_DISABLED;
1007 }
1008
1009 if (my_info3->base.acct_flags & ACB_WSTRUST) {
1010 return NT_STATUS_NOLOGON_WORKSTATION_TRUST_ACCOUNT;
1011 }
1012
1013 if (my_info3->base.acct_flags & ACB_SVRTRUST) {
1014 return NT_STATUS_NOLOGON_SERVER_TRUST_ACCOUNT;
1015 }
1016
1017 if (my_info3->base.acct_flags & ACB_DOMTRUST) {
1018 return NT_STATUS_NOLOGON_INTERDOMAIN_TRUST_ACCOUNT;
1019 }
1020
1021 if (!(my_info3->base.acct_flags & ACB_NORMAL)) {
1022 DEBUG(0,("winbindd_dual_pam_auth_cached: whats wrong with that one?: 0x%08x\n",
1023 my_info3->base.acct_flags));
1024 return NT_STATUS_LOGON_FAILURE;
1025 }
1026
1027 kickoff_time = nt_time_to_unix(my_info3->base.kickoff_time);
1028 if (kickoff_time != 0 && time(NULL) > kickoff_time) {
1029 return NT_STATUS_ACCOUNT_EXPIRED;
1030 }
1031
1032 must_change_time = nt_time_to_unix(my_info3->base.force_password_change);
1033 if (must_change_time != 0 && must_change_time < time(NULL)) {
1034 /* we allow grace logons when the password has expired */
1035 my_info3->base.user_flags |= NETLOGON_GRACE_LOGON;
1036 /* return NT_STATUS_PASSWORD_EXPIRED; */
1037 goto success;
1038 }
1039
1040 #ifdef HAVE_KRB5
1041 if ((state->request->flags & WBFLAG_PAM_KRB5) &&
1042 ((tdc_domain = wcache_tdc_fetch_domain(state->mem_ctx, name_domain)) != NULL) &&
1043 ((tdc_domain->trust_type & LSA_TRUST_TYPE_UPLEVEL) ||
1044 /* used to cope with the case winbindd starting without network. */
1045 !strequal(tdc_domain->domain_name, tdc_domain->dns_name))) {
1046
1047 uid_t uid = -1;
1048 const char *cc = NULL;
1049 char *realm = NULL;
1050 const char *principal_s = NULL;
1051 const char *service = NULL;
1052 const char *user_ccache_file;
1053
1054 if (domain->alt_name == NULL) {
1055 return NT_STATUS_INVALID_PARAMETER;
1056 }
1057
1058 uid = get_uid_from_request(state->request);
1059 if (uid == -1) {
1060 DEBUG(0,("winbindd_dual_pam_auth_cached: invalid uid\n"));
1061 return NT_STATUS_INVALID_PARAMETER;
1062 }
1063
1064 cc = generate_krb5_ccache(state->mem_ctx,
1065 state->request->data.auth.krb5_cc_type,
1066 state->request->data.auth.uid,
1067 &user_ccache_file);
1068 if (cc == NULL) {
1069 return NT_STATUS_NO_MEMORY;
1070 }
1071
1072 realm = talloc_strdup(state->mem_ctx, domain->alt_name);
1073 if (realm == NULL) {
1074 return NT_STATUS_NO_MEMORY;
1075 }
1076
1077 if (!strupper_m(realm)) {
1078 return NT_STATUS_INVALID_PARAMETER;
1079 }
1080
1081 principal_s = talloc_asprintf(state->mem_ctx, "%s@%s", name_user, realm);
1082 if (principal_s == NULL) {
1083 return NT_STATUS_NO_MEMORY;
1084 }
1085
1086 service = talloc_asprintf(state->mem_ctx, "%s/%s@%s", KRB5_TGS_NAME, realm, realm);
1087 if (service == NULL) {
1088 return NT_STATUS_NO_MEMORY;
1089 }
1090
1091 if (user_ccache_file != NULL) {
1092
1093 fstrcpy(state->response->data.auth.krb5ccname,
1094 user_ccache_file);
1095
1096 result = add_ccache_to_list(principal_s,
1097 cc,
1098 service,
1099 state->request->data.auth.user,
1100 state->request->data.auth.pass,
1101 realm,
1102 uid,
1103 time(NULL),
1104 time(NULL) + lp_winbind_cache_time(),
1105 time(NULL) + WINBINDD_PAM_AUTH_KRB5_RENEW_TIME,
1106 true);
1107
1108 if (!NT_STATUS_IS_OK(result)) {
1109 DEBUG(10,("winbindd_dual_pam_auth_cached: failed "
1110 "to add ccache to list: %s\n",
1111 nt_errstr(result)));
1112 }
1113 }
1114 }
1115 #endif /* HAVE_KRB5 */
1116 success:
1117 /* FIXME: we possibly should handle logon hours as well (does xp when
1118 * offline?) see auth/auth_sam.c:sam_account_ok for details */
1119
1120 unix_to_nt_time(&my_info3->base.logon_time, time(NULL));
1121 my_info3->base.bad_password_count = 0;
1122
1123 result = winbindd_update_creds_by_info3(domain,
1124 state->request->data.auth.user,
1125 state->request->data.auth.pass,
1126 my_info3);
1127 if (!NT_STATUS_IS_OK(result)) {
1128 DEBUG(1,("winbindd_dual_pam_auth_cached: failed to update creds: %s\n",
1129 nt_errstr(result)));
1130 return result;
1131 }
1132
1133 return NT_STATUS_OK;
1134
1135 }
1136
1137 /* User does *NOT* know the correct password, modify info3 accordingly, but only if online */
1138 if (domain->online == false) {
1139 goto failed;
1140 }
1141
1142 /* failure of this is not critical */
1143 result = get_max_bad_attempts_from_lockout_policy(domain, state->mem_ctx, &max_allowed_bad_attempts);
1144 if (!NT_STATUS_IS_OK(result)) {
1145 DEBUG(10,("winbindd_dual_pam_auth_cached: failed to get max_allowed_bad_attempts. "
1146 "Won't be able to honour account lockout policies\n"));
1147 }
1148
1149 /* increase counter */
1150 my_info3->base.bad_password_count++;
1151
1152 if (max_allowed_bad_attempts == 0) {
1153 goto failed;
1154 }
1155
1156 /* lockout user */
1157 if (my_info3->base.bad_password_count >= max_allowed_bad_attempts) {
1158
1159 uint32_t password_properties;
1160
1161 result = get_pwd_properties(domain, state->mem_ctx, &password_properties);
1162 if (!NT_STATUS_IS_OK(result)) {
1163 DEBUG(10,("winbindd_dual_pam_auth_cached: failed to get password properties.\n"));
1164 }
1165
1166 if ((my_info3->base.rid != DOMAIN_RID_ADMINISTRATOR) ||
1167 (password_properties & DOMAIN_PASSWORD_LOCKOUT_ADMINS)) {
1168 my_info3->base.acct_flags |= ACB_AUTOLOCK;
1169 }
1170 }
1171
1172 failed:
1173 result = winbindd_update_creds_by_info3(domain,
1174 state->request->data.auth.user,
1175 NULL,
1176 my_info3);
1177
1178 if (!NT_STATUS_IS_OK(result)) {
1179 DEBUG(0,("winbindd_dual_pam_auth_cached: failed to update creds %s\n",
1180 nt_errstr(result)));
1181 }
1182
1183 return NT_STATUS_LOGON_FAILURE;
1184 }
1185
1186 static NTSTATUS winbindd_dual_pam_auth_kerberos(struct winbindd_domain *domain,
1187 struct winbindd_cli_state *state,
1188 struct netr_SamInfo3 **info3)
1189 {
1190 struct winbindd_domain *contact_domain;
1191 fstring name_domain, name_user;
1192 NTSTATUS result;
1193
1194 DEBUG(10,("winbindd_dual_pam_auth_kerberos\n"));
1195
1196 /* Parse domain and username */
1197
1198 parse_domain_user(state->request->data.auth.user, name_domain, name_user);
1199
1200 /* what domain should we contact? */
1201
1202 if ( IS_DC ) {
1203 if (!(contact_domain = find_domain_from_name(name_domain))) {
1204 DEBUG(3, ("Authentication for domain for [%s] -> [%s]\\[%s] failed as %s is not a trusted domain\n",
1205 state->request->data.auth.user, name_domain, name_user, name_domain));
1206 result = NT_STATUS_NO_SUCH_USER;
1207 goto done;
1208 }
1209
1210 } else {
1211 if (is_myname(name_domain)) {
1212 DEBUG(3, ("Authentication for domain %s (local domain to this server) not supported at this stage\n", name_domain));
1213 result = NT_STATUS_NO_SUCH_USER;
1214 goto done;
1215 }
1216
1217 contact_domain = find_domain_from_name(name_domain);
1218 if (contact_domain == NULL) {
1219 DEBUG(3, ("Authentication for domain for [%s] -> [%s]\\[%s] failed as %s is not a trusted domain\n",
1220 state->request->data.auth.user, name_domain, name_user, name_domain));
1221
1222 result = NT_STATUS_NO_SUCH_USER;
1223 goto done;
1224 }
1225 }
1226
1227 if (contact_domain->initialized &&
1228 contact_domain->active_directory) {
1229 goto try_login;
1230 }
1231
1232 if (!contact_domain->initialized) {
1233 init_dc_connection(contact_domain, false);
1234 }
1235
1236 if (!contact_domain->active_directory) {
1237 DEBUG(3,("krb5 auth requested but domain is not Active Directory\n"));
1238 return NT_STATUS_INVALID_LOGON_TYPE;
1239 }
1240 try_login:
1241 result = winbindd_raw_kerberos_login(
1242 state->mem_ctx, contact_domain,
1243 state->request->data.auth.user,
1244 state->request->data.auth.pass,
1245 state->request->data.auth.krb5_cc_type,
1246 get_uid_from_request(state->request),
1247 info3, state->response->data.auth.krb5ccname);
1248 done:
1249 return result;
1250 }
1251
1252 static NTSTATUS winbindd_dual_auth_passdb(TALLOC_CTX *mem_ctx,
1253 uint32_t logon_parameters,
1254 const char *domain, const char *user,
1255 const DATA_BLOB *challenge,
1256 const DATA_BLOB *lm_resp,
1257 const DATA_BLOB *nt_resp,
1258 bool interactive,
1259 uint8_t *pauthoritative,
1260 struct netr_SamInfo3 **pinfo3)
1261 {
1262 struct auth_context *auth_context;
1263 struct auth_serversupplied_info *server_info;
1264 struct auth_usersupplied_info *user_info = NULL;
1265 struct tsocket_address *local;
1266 struct netr_SamInfo3 *info3;
1267 NTSTATUS status;
1268 bool ok;
1269 int rc;
1270 TALLOC_CTX *frame = talloc_stackframe();
1271
1272 /*
1273 * We are authoritative by default
1274 */
1275 *pauthoritative = 1;
1276
1277 rc = tsocket_address_inet_from_strings(frame,
1278 "ip",
1279 "127.0.0.1",
1280 0,
1281 &local);
1282 if (rc < 0) {
1283 TALLOC_FREE(frame);
1284 return NT_STATUS_NO_MEMORY;
1285 }
1286
1287 /*
1288 * TODO: We should get the service description passed in from
1289 * the winbind client, so we can have "smb2", "squid" or "samr" logged
1290 * here.
1291 */
1292 status = make_user_info(frame, &user_info, user, user, domain, domain,
1293 lp_netbios_name(), local, local,
1294 "winbind",
1295 lm_resp, nt_resp, NULL, NULL,
1296 NULL, AUTH_PASSWORD_RESPONSE);
1297 if (!NT_STATUS_IS_OK(status)) {
1298 DEBUG(10, ("make_user_info failed: %s\n", nt_errstr(status)));
1299 TALLOC_FREE(frame);
1300 return status;
1301 }
1302
1303 user_info->logon_parameters = logon_parameters;
1304
1305 /* We don't want any more mapping of the username */
1306 user_info->mapped_state = True;
1307
1308 /* We don't want to come back to winbindd or to do PAM account checks */
1309 user_info->flags |= USER_INFO_INFO3_AND_NO_AUTHZ;
1310
1311 if (interactive) {
1312 user_info->flags |= USER_INFO_INTERACTIVE_LOGON;
1313 }
1314
1315 status = make_auth3_context_for_winbind(frame, &auth_context);
1316 if (!NT_STATUS_IS_OK(status)) {
1317 DBG_ERR("make_auth3_context_for_winbind failed: %s\n",
1318 nt_errstr(status));
1319 TALLOC_FREE(frame);
1320 return status;
1321 }
1322
1323 ok = auth3_context_set_challenge(auth_context,
1324 challenge->data, "fixed");
1325 if (!ok) {
1326 TALLOC_FREE(frame);
1327 return NT_STATUS_NO_MEMORY;
1328 }
1329
1330 status = auth_check_ntlm_password(mem_ctx,
1331 auth_context,
1332 user_info,
1333 &server_info,
1334 pauthoritative);
1335 if (!NT_STATUS_IS_OK(status)) {
1336 TALLOC_FREE(frame);
1337 return status;
1338 }
1339
1340 info3 = talloc_zero(mem_ctx, struct netr_SamInfo3);
1341 if (info3 == NULL) {
1342 TALLOC_FREE(frame);
1343 return NT_STATUS_NO_MEMORY;
1344 }
1345
1346 status = serverinfo_to_SamInfo3(server_info, info3);
1347 if (!NT_STATUS_IS_OK(status)) {
1348 TALLOC_FREE(frame);
1349 TALLOC_FREE(info3);
1350 DEBUG(0, ("serverinfo_to_SamInfo3 failed: %s\n",
1351 nt_errstr(status)));
1352 return status;
1353 }
1354
1355 *pinfo3 = info3;
1356 DEBUG(10, ("Authenticaticating user %s\\%s returned %s\n", domain,
1357 user, nt_errstr(status)));
1358 TALLOC_FREE(frame);
1359 return status;
1360 }
1361
1362 static NTSTATUS winbind_samlogon_retry_loop(struct winbindd_domain *domain,
1363 TALLOC_CTX *mem_ctx,
1364 uint32_t logon_parameters,
1365 const char *username,
1366 const char *password,
1367 const char *domainname,
1368 const char *workstation,
1369 const uint8_t chal[8],
1370 DATA_BLOB lm_response,
1371 DATA_BLOB nt_response,
1372 bool interactive,
1373 uint8_t *authoritative,
1374 uint32_t *flags,
1375 struct netr_SamInfo3 **info3)
1376 {
1377 int attempts = 0;
1378 int netr_attempts = 0;
1379 bool retry = false;
1380 NTSTATUS result;
1381
1382 do {
1383 struct rpc_pipe_client *netlogon_pipe;
1384
1385 ZERO_STRUCTP(info3);
1386 retry = false;
1387
1388 result = cm_connect_netlogon(domain, &netlogon_pipe);
1389
1390 if (NT_STATUS_EQUAL(result,
1391 NT_STATUS_CANT_ACCESS_DOMAIN_INFO)) {
1392 /*
1393 * This means we don't have a trust account.
1394 */
1395 *authoritative = 0;
1396 result = NT_STATUS_NO_SUCH_USER;
1397 break;
1398 }
1399
1400 if (!NT_STATUS_IS_OK(result)) {
1401 DEBUG(3,("Could not open handle to NETLOGON pipe "
1402 "(error: %s, attempts: %d)\n",
1403 nt_errstr(result), netr_attempts));
1404
1405 /* After the first retry always close the connection */
1406 if (netr_attempts > 0) {
1407 DEBUG(3, ("This is again a problem for this "
1408 "particular call, forcing the close "
1409 "of this connection\n"));
1410 invalidate_cm_connection(domain);
1411 }
1412
1413 /* After the second retry failover to the next DC */
1414 if (netr_attempts > 1) {
1415 /*
1416 * If the netlogon server is not reachable then
1417 * it is possible that the DC is rebuilding
1418 * sysvol and shutdown netlogon for that time.
1419 * We should failover to the next dc.
1420 */
1421 DEBUG(3, ("This is the third problem for this "
1422 "particular call, adding DC to the "
1423 "negative cache list\n"));
1424 add_failed_connection_entry(domain->name,
1425 domain->dcname,
1426 result);
1427 saf_delete(domain->name);
1428 }
1429
1430 /* Only allow 3 retries */
1431 if (netr_attempts < 3) {
1432 DEBUG(3, ("The connection to netlogon "
1433 "failed, retrying\n"));
1434 netr_attempts++;
1435 retry = true;
1436 continue;
1437 }
1438 return result;
1439 }
1440 netr_attempts = 0;
1441 if (domain->conn.netlogon_creds == NULL) {
1442 DBG_NOTICE("No security credentials available for "
1443 "domain [%s]\n", domainname);
1444 result = NT_STATUS_CANT_ACCESS_DOMAIN_INFO;
1445 } else if (interactive) {
1446 result = rpccli_netlogon_password_logon(domain->conn.netlogon_creds,
1447 netlogon_pipe->binding_handle,
1448 mem_ctx,
1449 logon_parameters,
1450 domainname,
1451 username,
1452 password,
1453 workstation,
1454 NetlogonInteractiveInformation,
1455 authoritative,
1456 flags,
1457 info3);
1458 } else {
1459 result = rpccli_netlogon_network_logon(domain->conn.netlogon_creds,
1460 netlogon_pipe->binding_handle,
1461 mem_ctx,
1462 logon_parameters,
1463 username,
1464 domainname,
1465 workstation,
1466 chal,
1467 lm_response,
1468 nt_response,
1469 authoritative,
1470 flags,
1471 info3);
1472 }
1473
1474 /*
1475 * we increment this after the "feature negotiation"
1476 * for can_do_samlogon_ex and can_do_validation6
1477 */
1478 attempts += 1;
1479
1480 /* We have to try a second time as cm_connect_netlogon
1481 might not yet have noticed that the DC has killed
1482 our connection. */
1483
1484 if (!rpccli_is_connected(netlogon_pipe)) {
1485 retry = true;
1486 continue;
1487 }
1488
1489 /* if we get access denied, a possible cause was that we had
1490 and open connection to the DC, but someone changed our
1491 machine account password out from underneath us using 'net
1492 rpc changetrustpw' */
1493
1494 if ( NT_STATUS_EQUAL(result, NT_STATUS_ACCESS_DENIED) ) {
1495 DEBUG(1,("winbind_samlogon_retry_loop: sam_logon returned "
1496 "ACCESS_DENIED. Maybe the DC has Restrict "
1497 "NTLM set or the trust account "
1498 "password was changed and we didn't know it. "
1499 "Killing connections to domain %s\n",
1500 domainname));
1501 invalidate_cm_connection(domain);
1502 retry = true;
1503 }
1504
1505 if (NT_STATUS_EQUAL(result, NT_STATUS_RPC_PROCNUM_OUT_OF_RANGE)) {
1506 /*
1507 * Got DCERPC_FAULT_OP_RNG_ERROR for SamLogon
1508 * (no Ex). This happens against old Samba
1509 * DCs, if LogonSamLogonEx() fails with an error
1510 * e.g. NT_STATUS_NO_SUCH_USER or NT_STATUS_WRONG_PASSWORD.
1511 *
1512 * The server will log something like this:
1513 * api_net_sam_logon_ex: Failed to marshall NET_R_SAM_LOGON_EX.
1514 *
1515 * This sets the whole connection into a fault_state mode
1516 * and all following request get NT_STATUS_RPC_PROCNUM_OUT_OF_RANGE.
1517 *
1518 * This also happens to our retry with LogonSamLogonWithFlags()
1519 * and LogonSamLogon().
1520 *
1521 * In order to recover from this situation, we need to
1522 * drop the connection.
1523 */
1524 invalidate_cm_connection(domain);
1525 result = NT_STATUS_LOGON_FAILURE;
1526 break;
1527 }
1528
1529 } while ( (attempts < 2) && retry );
1530
1531 if (NT_STATUS_EQUAL(result, NT_STATUS_IO_TIMEOUT)) {
1532 DEBUG(3,("winbind_samlogon_retry_loop: sam_network_logon(ex) "
1533 "returned NT_STATUS_IO_TIMEOUT after the retry."
1534 "Killing connections to domain %s\n",
1535 domainname));
1536 invalidate_cm_connection(domain);
1537 }
1538 return result;
1539 }
1540
1541 static NTSTATUS winbindd_dual_pam_auth_samlogon(TALLOC_CTX *mem_ctx,
1542 struct winbindd_domain *domain,
1543 const char *user,
1544 const char *pass,
1545 uint32_t request_flags,
1546 struct netr_SamInfo3 **info3)
1547 {
1548
1549 uchar chal[8];
1550 DATA_BLOB lm_resp;
1551 DATA_BLOB nt_resp;
1552 unsigned char local_nt_response[24];
1553 fstring name_domain, name_user;
1554 NTSTATUS result;
1555 struct netr_SamInfo3 *my_info3 = NULL;
1556 uint8_t authoritative = 0;
1557 uint32_t flags = 0;
1558
1559 *info3 = NULL;
1560
1561 DEBUG(10,("winbindd_dual_pam_auth_samlogon\n"));
1562
1563 /* Parse domain and username */
1564
1565 parse_domain_user(user, name_domain, name_user);
1566
1567 /*
1568 * We check against domain->name instead of
1569 * name_domain, as find_auth_domain() ->
1570 * find_domain_from_name_noinit() already decided
1571 * that we are in a child for the correct domain.
1572 *
1573 * name_domain can also be lp_realm()
1574 * we need to check against domain->name.
1575 */
1576 if (strequal(domain->name, get_global_sam_name())) {
1577 DATA_BLOB chal_blob = data_blob_const(chal, sizeof(chal));
1578
1579 /* do password magic */
1580
1581 generate_random_buffer(chal, sizeof(chal));
1582
1583 if (lp_client_ntlmv2_auth()) {
1584 DATA_BLOB server_chal;
1585 DATA_BLOB names_blob;
1586 server_chal = data_blob_const(chal, 8);
1587
1588 /* note that the 'workgroup' here is for the local
1589 machine. The 'server name' must match the
1590 'workstation' passed to the actual SamLogon call.
1591 */
1592 names_blob = NTLMv2_generate_names_blob(
1593 mem_ctx, lp_netbios_name(), lp_workgroup());
1594
1595 if (!SMBNTLMv2encrypt(mem_ctx, name_user, name_domain,
1596 pass,
1597 &server_chal,
1598 &names_blob,
1599 &lm_resp, &nt_resp, NULL, NULL)) {
1600 data_blob_free(&names_blob);
1601 DEBUG(0, ("winbindd_pam_auth: SMBNTLMv2encrypt() failed!\n"));
1602 result = NT_STATUS_NO_MEMORY;
1603 goto done;
1604 }
1605 data_blob_free(&names_blob);
1606 } else {
1607 lm_resp = data_blob_null;
1608 SMBNTencrypt(pass, chal, local_nt_response);
1609
1610 nt_resp = data_blob_talloc(mem_ctx, local_nt_response,
1611 sizeof(local_nt_response));
1612 }
1613
1614 result = winbindd_dual_auth_passdb(
1615 mem_ctx, 0, name_domain, name_user,
1616 &chal_blob, &lm_resp, &nt_resp,
1617 true, /* interactive */
1618 &authoritative,
1619 info3);
1620
1621 /*
1622 * We need to try the remote NETLOGON server if this is
1623 * not authoritative (for example on the RODC).
1624 */
1625 if (authoritative != 0) {
1626 goto done;
1627 }
1628 }
1629
1630 /* check authentication loop */
1631
1632 result = winbind_samlogon_retry_loop(domain,
1633 mem_ctx,
1634 0,
1635 name_user,
1636 pass,
1637 name_domain,
1638 lp_netbios_name(),
1639 NULL,
1640 data_blob_null, data_blob_null,
1641 true, /* interactive */
1642 &authoritative,
1643 &flags,
1644 &my_info3);
1645 if (!NT_STATUS_IS_OK(result)) {
1646 goto done;
1647 }
1648
1649 /* handle the case where a NT4 DC does not fill in the acct_flags in
1650 * the samlogon reply info3. When accurate info3 is required by the
1651 * caller, we look up the account flags ourselves - gd */
1652
1653 if ((request_flags & WBFLAG_PAM_INFO3_TEXT) &&
1654 NT_STATUS_IS_OK(result) && (my_info3->base.acct_flags == 0)) {
1655
1656 struct rpc_pipe_client *samr_pipe;
1657 struct policy_handle samr_domain_handle, user_pol;
1658 union samr_UserInfo *info = NULL;
1659 NTSTATUS status_tmp, result_tmp;
1660 uint32_t acct_flags;
1661 struct dcerpc_binding_handle *b;
1662
1663 status_tmp = cm_connect_sam(domain, mem_ctx, false,
1664 &samr_pipe, &samr_domain_handle);
1665
1666 if (!NT_STATUS_IS_OK(status_tmp)) {
1667 DEBUG(3, ("could not open handle to SAMR pipe: %s\n",
1668 nt_errstr(status_tmp)));
1669 goto done;
1670 }
1671
1672 b = samr_pipe->binding_handle;
1673
1674 status_tmp = dcerpc_samr_OpenUser(b, mem_ctx,
1675 &samr_domain_handle,
1676 MAXIMUM_ALLOWED_ACCESS,
1677 my_info3->base.rid,
1678 &user_pol,
1679 &result_tmp);
1680
1681 if (!NT_STATUS_IS_OK(status_tmp)) {
1682 DEBUG(3, ("could not open user handle on SAMR pipe: %s\n",
1683 nt_errstr(status_tmp)));
1684 goto done;
1685 }
1686 if (!NT_STATUS_IS_OK(result_tmp)) {
1687 DEBUG(3, ("could not open user handle on SAMR pipe: %s\n",
1688 nt_errstr(result_tmp)));
1689 goto done;
1690 }
1691
1692 status_tmp = dcerpc_samr_QueryUserInfo(b, mem_ctx,
1693 &user_pol,
1694 16,
1695 &info,
1696 &result_tmp);
1697
1698 if (!NT_STATUS_IS_OK(status_tmp)) {
1699 DEBUG(3, ("could not query user info on SAMR pipe: %s\n",
1700 nt_errstr(status_tmp)));
1701 dcerpc_samr_Close(b, mem_ctx, &user_pol, &result_tmp);
1702 goto done;
1703 }
1704 if (!NT_STATUS_IS_OK(result_tmp)) {
1705 DEBUG(3, ("could not query user info on SAMR pipe: %s\n",
1706 nt_errstr(result_tmp)));
1707 dcerpc_samr_Close(b, mem_ctx, &user_pol, &result_tmp);
1708 goto done;
1709 }
1710
1711 acct_flags = info->info16.acct_flags;
1712
1713 if (acct_flags == 0) {
1714 dcerpc_samr_Close(b, mem_ctx, &user_pol, &result_tmp);
1715 goto done;
1716 }
1717
1718 my_info3->base.acct_flags = acct_flags;
1719
1720 DEBUG(10,("successfully retrieved acct_flags 0x%x\n", acct_flags));
1721
1722 dcerpc_samr_Close(b, mem_ctx, &user_pol, &result_tmp);
1723 }
1724
1725 *info3 = my_info3;
1726 done:
1727 return result;
1728 }
1729
1730 enum winbindd_result winbindd_dual_pam_auth(struct winbindd_domain *domain,
1731 struct winbindd_cli_state *state)
1732 {
1733 NTSTATUS result = NT_STATUS_LOGON_FAILURE;
1734 NTSTATUS krb5_result = NT_STATUS_OK;
1735 fstring name_domain, name_user;
1736 char *mapped_user;
1737 fstring domain_user;
1738 struct netr_SamInfo3 *info3 = NULL;
1739 NTSTATUS name_map_status = NT_STATUS_UNSUCCESSFUL;
1740
1741 /* Ensure null termination */
1742 state->request->data.auth.user[sizeof(state->request->data.auth.user)-1]='\0';
1743
1744 /* Ensure null termination */
1745 state->request->data.auth.pass[sizeof(state->request->data.auth.pass)-1]='\0';
1746
1747 DEBUG(3, ("[%5lu]: dual pam auth %s\n", (unsigned long)state->pid,
1748 state->request->data.auth.user));
1749
1750 /* Parse domain and username */
1751
1752 name_map_status = normalize_name_unmap(state->mem_ctx,
1753 state->request->data.auth.user,
1754 &mapped_user);
1755
1756 /* If the name normalization didnt' actually do anything,
1757 just use the original name */
1758
1759 if (!NT_STATUS_IS_OK(name_map_status) &&
1760 !NT_STATUS_EQUAL(name_map_status, NT_STATUS_FILE_RENAMED))
1761 {
1762 mapped_user = state->request->data.auth.user;
1763 }
1764
1765 parse_domain_user(mapped_user, name_domain, name_user);
1766
1767 if ( mapped_user != state->request->data.auth.user ) {
1768 fstr_sprintf( domain_user, "%s%c%s", name_domain,
1769 *lp_winbind_separator(),
1770 name_user );
1771 strlcpy( state->request->data.auth.user, domain_user,
1772 sizeof(state->request->data.auth.user));
1773 }
1774
1775 if (!domain->online) {
1776 result = NT_STATUS_DOMAIN_CONTROLLER_NOT_FOUND;
1777 if (domain->startup) {
1778 /* Logons are very important to users. If we're offline and
1779 we get a request within the first 30 seconds of startup,
1780 try very hard to find a DC and go online. */
1781
1782 DEBUG(10,("winbindd_dual_pam_auth: domain: %s offline and auth "
1783 "request in startup mode.\n", domain->name ));
1784
1785 winbindd_flush_negative_conn_cache(domain);
1786 result = init_dc_connection(domain, false);
1787 }
1788 }
1789
1790 DEBUG(10,("winbindd_dual_pam_auth: domain: %s last was %s\n", domain->name, domain->online ? "online":"offline"));
1791
1792 /* Check for Kerberos authentication */
1793 if (domain->online && (state->request->flags & WBFLAG_PAM_KRB5)) {
1794
1795 result = winbindd_dual_pam_auth_kerberos(domain, state, &info3);
1796 /* save for later */
1797 krb5_result = result;
1798
1799
1800 if (NT_STATUS_IS_OK(result)) {
1801 DEBUG(10,("winbindd_dual_pam_auth_kerberos succeeded\n"));
1802 goto process_result;
1803 } else {
1804 DEBUG(10,("winbindd_dual_pam_auth_kerberos failed: %s\n", nt_errstr(result)));
1805 }
1806
1807 if (NT_STATUS_EQUAL(result, NT_STATUS_NO_LOGON_SERVERS) ||
1808 NT_STATUS_EQUAL(result, NT_STATUS_IO_TIMEOUT) ||
1809 NT_STATUS_EQUAL(result, NT_STATUS_DOMAIN_CONTROLLER_NOT_FOUND)) {
1810 DEBUG(10,("winbindd_dual_pam_auth_kerberos setting domain to offline\n"));
1811 set_domain_offline( domain );
1812 goto cached_logon;
1813 }
1814
1815 /* there are quite some NT_STATUS errors where there is no
1816 * point in retrying with a samlogon, we explictly have to take
1817 * care not to increase the bad logon counter on the DC */
1818
1819 if (NT_STATUS_EQUAL(result, NT_STATUS_ACCOUNT_DISABLED) ||
1820 NT_STATUS_EQUAL(result, NT_STATUS_ACCOUNT_EXPIRED) ||
1821 NT_STATUS_EQUAL(result, NT_STATUS_ACCOUNT_LOCKED_OUT) ||
1822 NT_STATUS_EQUAL(result, NT_STATUS_INVALID_LOGON_HOURS) ||
1823 NT_STATUS_EQUAL(result, NT_STATUS_INVALID_WORKSTATION) ||
1824 NT_STATUS_EQUAL(result, NT_STATUS_LOGON_FAILURE) ||
1825 NT_STATUS_EQUAL(result, NT_STATUS_NO_SUCH_USER) ||
1826 NT_STATUS_EQUAL(result, NT_STATUS_PASSWORD_EXPIRED) ||
1827 NT_STATUS_EQUAL(result, NT_STATUS_PASSWORD_MUST_CHANGE) ||
1828 NT_STATUS_EQUAL(result, NT_STATUS_WRONG_PASSWORD)) {
1829 goto done;
1830 }
1831
1832 if (state->request->flags & WBFLAG_PAM_FALLBACK_AFTER_KRB5) {
1833 DEBUG(3,("falling back to samlogon\n"));
1834 goto sam_logon;
1835 } else {
1836 goto cached_logon;
1837 }
1838 }
1839
1840 sam_logon:
1841 /* Check for Samlogon authentication */
1842 if (domain->online) {
1843 result = winbindd_dual_pam_auth_samlogon(
1844 state->mem_ctx, domain,
1845 state->request->data.auth.user,
1846 state->request->data.auth.pass,
1847 state->request->flags,
1848 &info3);
1849
1850 if (NT_STATUS_IS_OK(result)) {
1851 DEBUG(10,("winbindd_dual_pam_auth_samlogon succeeded\n"));
1852 /* add the Krb5 err if we have one */
1853 if ( NT_STATUS_EQUAL(krb5_result, NT_STATUS_TIME_DIFFERENCE_AT_DC ) ) {
1854 info3->base.user_flags |= LOGON_KRB5_FAIL_CLOCK_SKEW;
1855 }
1856 goto process_result;
1857 }
1858
1859 DEBUG(10,("winbindd_dual_pam_auth_samlogon failed: %s\n",
1860 nt_errstr(result)));
1861
1862 if (NT_STATUS_EQUAL(result, NT_STATUS_NO_LOGON_SERVERS) ||
1863 NT_STATUS_EQUAL(result, NT_STATUS_IO_TIMEOUT) ||
1864 NT_STATUS_EQUAL(result, NT_STATUS_DOMAIN_CONTROLLER_NOT_FOUND))
1865 {
1866 DEBUG(10,("winbindd_dual_pam_auth_samlogon setting domain to offline\n"));
1867 set_domain_offline( domain );
1868 goto cached_logon;
1869 }
1870
1871 if (domain->online) {
1872 /* We're still online - fail. */
1873 goto done;
1874 }
1875 }
1876
1877 cached_logon:
1878 /* Check for Cached logons */
1879 if (!domain->online && (state->request->flags & WBFLAG_PAM_CACHED_LOGIN) &&
1880 lp_winbind_offline_logon()) {
1881
1882 result = winbindd_dual_pam_auth_cached(domain, state, &info3);
1883
1884 if (NT_STATUS_IS_OK(result)) {
1885 DEBUG(10,("winbindd_dual_pam_auth_cached succeeded\n"));
1886 goto process_result;
1887 } else {
1888 DEBUG(10,("winbindd_dual_pam_auth_cached failed: %s\n", nt_errstr(result)));
1889 goto done;
1890 }
1891 }
1892
1893 process_result:
1894
1895 if (NT_STATUS_IS_OK(result)) {
1896
1897 struct dom_sid user_sid;
1898
1899 /* In all codepaths where result == NT_STATUS_OK info3 must have
1900 been initialized. */
1901 if (!info3) {
1902 result = NT_STATUS_INTERNAL_ERROR;
1903 goto done;
1904 }
1905
1906 sid_compose(&user_sid, info3->base.domain_sid,
1907 info3->base.rid);
1908
1909 if (info3->base.full_name.string == NULL) {
1910 struct netr_SamInfo3 *cached_info3;
1911
1912 cached_info3 = netsamlogon_cache_get(state->mem_ctx,
1913 &user_sid);
1914 if (cached_info3 != NULL &&
1915 cached_info3->base.full_name.string != NULL) {
1916 info3->base.full_name.string =
1917 talloc_strdup(info3,
1918 cached_info3->base.full_name.string);
1919 } else {
1920
1921 /* this might fail so we don't check the return code */
1922 wcache_query_user_fullname(domain,
1923 info3,
1924 &user_sid,
1925 &info3->base.full_name.string);
1926 }
1927 }
1928
1929 wcache_invalidate_samlogon(find_domain_from_name(name_domain),
1930 &user_sid);
1931 netsamlogon_cache_store(name_user, info3);
1932
1933 /* save name_to_sid info as early as possible (only if
1934 this is our primary domain so we don't invalidate
1935 the cache entry by storing the seq_num for the wrong
1936 domain). */
1937 if ( domain->primary ) {
1938 cache_name2sid(domain, name_domain, name_user,
1939 SID_NAME_USER, &user_sid);
1940 }
1941
1942 /* Check if the user is in the right group */
1943
1944 result = check_info3_in_group(
1945 info3,
1946 state->request->data.auth.require_membership_of_sid);
1947 if (!NT_STATUS_IS_OK(result)) {
1948 DEBUG(3, ("User %s is not in the required group (%s), so plaintext authentication is rejected\n",
1949 state->request->data.auth.user,
1950 state->request->data.auth.require_membership_of_sid));
1951 goto done;
1952 }
1953
1954 result = append_auth_data(state->mem_ctx, state->response,
1955 state->request->flags, info3,
1956 name_domain, name_user);
1957 if (!NT_STATUS_IS_OK(result)) {
1958 goto done;
1959 }
1960
1961 if ((state->request->flags & WBFLAG_PAM_CACHED_LOGIN)
1962 && lp_winbind_offline_logon()) {
1963
1964 result = winbindd_store_creds(domain,
1965 state->request->data.auth.user,
1966 state->request->data.auth.pass,
1967 info3);
1968 }
1969
1970 if (state->request->flags & WBFLAG_PAM_GET_PWD_POLICY) {
1971 /*
1972 * WBFLAG_PAM_GET_PWD_POLICY is not used within
1973 * any Samba caller anymore.
1974 *
1975 * We just fake this based on the effective values
1976 * for the user, for legacy callers.
1977 */
1978 fake_password_policy(state->response, &info3->base);
1979 }
1980
1981 result = NT_STATUS_OK;
1982 }
1983
1984 done:
1985 /* give us a more useful (more correct?) error code */
1986 if ((NT_STATUS_EQUAL(result, NT_STATUS_DOMAIN_CONTROLLER_NOT_FOUND) ||
1987 (NT_STATUS_EQUAL(result, NT_STATUS_UNSUCCESSFUL)))) {
1988 result = NT_STATUS_NO_LOGON_SERVERS;
1989 }
1990
1991 set_auth_errors(state->response, result);
1992
1993 DEBUG(NT_STATUS_IS_OK(result) ? 5 : 2, ("Plain-text authentication for user %s returned %s (PAM: %d)\n",
1994 state->request->data.auth.user,
1995 state->response->data.auth.nt_status_string,
1996 state->response->data.auth.pam_error));
1997
1998 return NT_STATUS_IS_OK(result) ? WINBINDD_OK : WINBINDD_ERROR;
1999 }
2000
2001 NTSTATUS winbind_dual_SamLogon(struct winbindd_domain *domain,
2002 TALLOC_CTX *mem_ctx,
2003 uint32_t logon_parameters,
2004 const char *name_user,
2005 const char *name_domain,
2006 const char *workstation,
2007 const uint8_t chal[8],
2008 DATA_BLOB lm_response,
2009 DATA_BLOB nt_response,
2010 uint8_t *authoritative,
2011 uint32_t *flags,
2012 struct netr_SamInfo3 **info3)
2013 {
2014 NTSTATUS result;
2015
2016 /*
2017 * We check against domain->name instead of
2018 * name_domain, as find_auth_domain() ->
2019 * find_domain_from_name_noinit() already decided
2020 * that we are in a child for the correct domain.
2021 *
2022 * name_domain can also be lp_realm()
2023 * we need to check against domain->name.
2024 */
2025 if (strequal(domain->name, get_global_sam_name())) {
2026 DATA_BLOB chal_blob = data_blob_const(
2027 chal, 8);
2028
2029 result = winbindd_dual_auth_passdb(
2030 mem_ctx,
2031 logon_parameters,
2032 name_domain, name_user,
2033 &chal_blob, &lm_response, &nt_response,
2034 false, /* interactive */
2035 authoritative,
2036 info3);
2037
2038 /*
2039 * We need to try the remote NETLOGON server if this is
2040 * not authoritative.
2041 */
2042 if (*authoritative != 0) {
2043 *flags = 0;
2044 goto process_result;
2045 }
2046 }
2047
2048 result = winbind_samlogon_retry_loop(domain,
2049 mem_ctx,
2050 logon_parameters,
2051 name_user,
2052 NULL, /* password */
2053 name_domain,
2054 /* Bug #3248 - found by Stefan Burkei. */
2055 workstation, /* We carefully set this above so use it... */
2056 chal,
2057 lm_response,
2058 nt_response,
2059 false, /* interactive */
2060 authoritative,
2061 flags,
2062 info3);
2063 if (!NT_STATUS_IS_OK(result)) {
2064 goto done;
2065 }
2066
2067 process_result:
2068
2069 if (NT_STATUS_IS_OK(result)) {
2070 struct dom_sid user_sid;
2071
2072 sid_compose(&user_sid, (*info3)->base.domain_sid,
2073 (*info3)->base.rid);
2074
2075 if ((*info3)->base.full_name.string == NULL) {
2076 struct netr_SamInfo3 *cached_info3;
2077
2078 cached_info3 = netsamlogon_cache_get(mem_ctx,
2079 &user_sid);
2080 if (cached_info3 != NULL &&
2081 cached_info3->base.full_name.string != NULL) {
2082 (*info3)->base.full_name.string =
2083 talloc_strdup(*info3,
2084 cached_info3->base.full_name.string);
2085 } else {
2086
2087 /* this might fail so we don't check the return code */
2088 wcache_query_user_fullname(domain,
2089 *info3,
2090 &user_sid,
2091 &(*info3)->base.full_name.string);
2092 }
2093 }
2094
2095 wcache_invalidate_samlogon(find_domain_from_name(name_domain),
2096 &user_sid);
2097 netsamlogon_cache_store(name_user, *info3);
2098 }
2099
2100 done:
2101
2102 /* give us a more useful (more correct?) error code */
2103 if ((NT_STATUS_EQUAL(result, NT_STATUS_DOMAIN_CONTROLLER_NOT_FOUND) ||
2104 (NT_STATUS_EQUAL(result, NT_STATUS_UNSUCCESSFUL)))) {
2105 result = NT_STATUS_NO_LOGON_SERVERS;
2106 }
2107
2108 DEBUG(NT_STATUS_IS_OK(result) ? 5 : 2,
2109 ("NTLM CRAP authentication for user [%s]\\[%s] returned %s\n",
2110 name_domain,
2111 name_user,
2112 nt_errstr(result)));
2113
2114 return result;
2115 }
2116
2117 enum winbindd_result winbindd_dual_pam_auth_crap(struct winbindd_domain *domain,
2118 struct winbindd_cli_state *state)
2119 {
2120 NTSTATUS result;
2121 struct netr_SamInfo3 *info3 = NULL;
2122 const char *name_user = NULL;
2123 const char *name_domain = NULL;
2124 const char *workstation;
2125 uint8_t authoritative;
2126 uint32_t flags;
2127
2128 DATA_BLOB lm_resp, nt_resp;
2129
2130 /* This is child-only, so no check for privileged access is needed
2131 anymore */
2132
2133 /* Ensure null termination */
2134 state->request->data.auth_crap.user[sizeof(state->request->data.auth_crap.user)-1]=0;
2135 state->request->data.auth_crap.domain[sizeof(state->request->data.auth_crap.domain)-1]=0;
2136
2137 name_user = state->request->data.auth_crap.user;
2138 name_domain = state->request->data.auth_crap.domain;
2139 workstation = state->request->data.auth_crap.workstation;
2140
2141 DEBUG(3, ("[%5lu]: pam auth crap domain: %s user: %s\n", (unsigned long)state->pid,
2142 name_domain, name_user));
2143
2144 if (state->request->data.auth_crap.lm_resp_len > sizeof(state->request->data.auth_crap.lm_resp)
2145 || state->request->data.auth_crap.nt_resp_len > sizeof(state->request->data.auth_crap.nt_resp)) {
2146 if (!(state->request->flags & WBFLAG_BIG_NTLMV2_BLOB) ||
2147 state->request->extra_len != state->request->data.auth_crap.nt_resp_len) {
2148 DEBUG(0, ("winbindd_pam_auth_crap: invalid password length %u/%u\n",
2149 state->request->data.auth_crap.lm_resp_len,
2150 state->request->data.auth_crap.nt_resp_len));
2151 result = NT_STATUS_INVALID_PARAMETER;
2152 goto done;
2153 }
2154 }
2155
2156 lm_resp = data_blob_talloc(state->mem_ctx, state->request->data.auth_crap.lm_resp,
2157 state->request->data.auth_crap.lm_resp_len);
2158
2159 if (state->request->flags & WBFLAG_BIG_NTLMV2_BLOB) {
2160 nt_resp = data_blob_talloc(state->mem_ctx,
2161 state->request->extra_data.data,
2162 state->request->data.auth_crap.nt_resp_len);
2163 } else {
2164 nt_resp = data_blob_talloc(state->mem_ctx,
2165 state->request->data.auth_crap.nt_resp,
2166 state->request->data.auth_crap.nt_resp_len);
2167 }
2168
2169 result = winbind_dual_SamLogon(domain,
2170 state->mem_ctx,
2171 state->request->data.auth_crap.logon_parameters,
2172 name_user,
2173 name_domain,
2174 /* Bug #3248 - found by Stefan Burkei. */
2175 workstation, /* We carefully set this above so use it... */
2176 state->request->data.auth_crap.chal,
2177 lm_resp,
2178 nt_resp,
2179 &authoritative,
2180 &flags,
2181 &info3);
2182 if (!NT_STATUS_IS_OK(result)) {
2183 state->response->data.auth.authoritative = authoritative;
2184 goto done;
2185 }
2186
2187 if (NT_STATUS_IS_OK(result)) {
2188 /* Check if the user is in the right group */
2189
2190 result = check_info3_in_group(
2191 info3,
2192 state->request->data.auth_crap.require_membership_of_sid);
2193 if (!NT_STATUS_IS_OK(result)) {
2194 DEBUG(3, ("User %s is not in the required group (%s), so "
2195 "crap authentication is rejected\n",
2196 state->request->data.auth_crap.user,
2197 state->request->data.auth_crap.require_membership_of_sid));
2198 goto done;
2199 }
2200
2201 result = append_auth_data(state->mem_ctx, state->response,
2202 state->request->flags, info3,
2203 name_domain, name_user);
2204 if (!NT_STATUS_IS_OK(result)) {
2205 goto done;
2206 }
2207 }
2208
2209 done:
2210
2211 if (state->request->flags & WBFLAG_PAM_NT_STATUS_SQUASH) {
2212 result = nt_status_squash(result);
2213 }
2214
2215 set_auth_errors(state->response, result);
2216
2217 return NT_STATUS_IS_OK(result) ? WINBINDD_OK : WINBINDD_ERROR;
2218 }
2219
2220 enum winbindd_result winbindd_dual_pam_chauthtok(struct winbindd_domain *contact_domain,
2221 struct winbindd_cli_state *state)
2222 {
2223 char *oldpass;
2224 char *newpass = NULL;
2225 struct policy_handle dom_pol;
2226 struct rpc_pipe_client *cli = NULL;
2227 bool got_info = false;
2228 struct samr_DomInfo1 *info = NULL;
2229 struct userPwdChangeFailureInformation *reject = NULL;
2230 NTSTATUS result = NT_STATUS_UNSUCCESSFUL;
2231 fstring domain, user;
2232 struct dcerpc_binding_handle *b = NULL;
2233
2234 ZERO_STRUCT(dom_pol);
2235
2236 DEBUG(3, ("[%5lu]: dual pam chauthtok %s\n", (unsigned long)state->pid,
2237 state->request->data.auth.user));
2238
2239 if (!parse_domain_user(state->request->data.chauthtok.user, domain, user)) {
2240 goto done;
2241 }
2242
2243 /* Change password */
2244
2245 oldpass = state->request->data.chauthtok.oldpass;
2246 newpass = state->request->data.chauthtok.newpass;
2247
2248 /* Initialize reject reason */
2249 state->response->data.auth.reject_reason = Undefined;
2250
2251 /* Get sam handle */
2252
2253 result = cm_connect_sam(contact_domain, state->mem_ctx, true, &cli,
2254 &dom_pol);
2255 if (!NT_STATUS_IS_OK(result)) {
2256 DEBUG(1, ("could not get SAM handle on DC for %s\n", domain));
2257 goto done;
2258 }
2259
2260 b = cli->binding_handle;
2261
2262 result = rpccli_samr_chgpasswd_user3(cli, state->mem_ctx,
2263 user,
2264 newpass,
2265 oldpass,
2266 &info,
2267 &reject);
2268
2269 /* Windows 2003 returns NT_STATUS_PASSWORD_RESTRICTION */
2270
2271 if (NT_STATUS_EQUAL(result, NT_STATUS_PASSWORD_RESTRICTION) ) {
2272
2273 fill_in_password_policy(state->response, info);
2274
2275 state->response->data.auth.reject_reason =
2276 reject->extendedFailureReason;
2277
2278 got_info = true;
2279 }
2280
2281 /* atm the pidl generated rpccli_samr_ChangePasswordUser3 function will
2282 * return with NT_STATUS_BUFFER_TOO_SMALL for w2k dcs as w2k just
2283 * returns with 4byte error code (NT_STATUS_NOT_SUPPORTED) which is too
2284 * short to comply with the samr_ChangePasswordUser3 idl - gd */
2285
2286 /* only fallback when the chgpasswd_user3 call is not supported */
2287 if (NT_STATUS_EQUAL(result, NT_STATUS_RPC_PROCNUM_OUT_OF_RANGE) ||
2288 NT_STATUS_EQUAL(result, NT_STATUS_NOT_SUPPORTED) ||
2289 NT_STATUS_EQUAL(result, NT_STATUS_BUFFER_TOO_SMALL) ||
2290 NT_STATUS_EQUAL(result, NT_STATUS_NOT_IMPLEMENTED)) {
2291
2292 DEBUG(10,("Password change with chgpasswd_user3 failed with: %s, retrying chgpasswd_user2\n",
2293 nt_errstr(result)));
2294
2295 result = rpccli_samr_chgpasswd_user2(cli, state->mem_ctx, user, newpass, oldpass);
2296
2297 /* Windows 2000 returns NT_STATUS_ACCOUNT_RESTRICTION.
2298 Map to the same status code as Windows 2003. */
2299
2300 if ( NT_STATUS_EQUAL(NT_STATUS_ACCOUNT_RESTRICTION, result ) ) {
2301 result = NT_STATUS_PASSWORD_RESTRICTION;
2302 }
2303 }
2304
2305 done:
2306
2307 if (NT_STATUS_IS_OK(result)
2308 && (state->request->flags & WBFLAG_PAM_CACHED_LOGIN)
2309 && lp_winbind_offline_logon()) {
2310 result = winbindd_update_creds_by_name(contact_domain, user,
2311 newpass);
2312 /* Again, this happens when we login from gdm or xdm
2313 * and the password expires, *BUT* cached crendentials
2314 * doesn't exist. winbindd_update_creds_by_name()
2315 * returns NT_STATUS_NO_SUCH_USER.
2316 * This is not a failure.
2317 * --- BoYang
2318 * */
2319 if (NT_STATUS_EQUAL(result, NT_STATUS_NO_SUCH_USER)) {
2320 result = NT_STATUS_OK;
2321 }
2322
2323 if (!NT_STATUS_IS_OK(result)) {
2324 DEBUG(10, ("Failed to store creds: %s\n",
2325 nt_errstr(result)));
2326 goto process_result;
2327 }
2328 }
2329
2330 if (!NT_STATUS_IS_OK(result) && !got_info && contact_domain) {
2331
2332 NTSTATUS policy_ret;
2333
2334 policy_ret = fillup_password_policy(
2335 contact_domain, state->response);
2336
2337 /* failure of this is non critical, it will just provide no
2338 * additional information to the client why the change has
2339 * failed - Guenther */
2340
2341 if (!NT_STATUS_IS_OK(policy_ret)) {
2342 DEBUG(10,("Failed to get password policies: %s\n", nt_errstr(policy_ret)));
2343 goto process_result;
2344 }
2345 }
2346
2347 process_result:
2348
2349 if (strequal(contact_domain->name, get_global_sam_name())) {
2350 /* FIXME: internal rpc pipe does not cache handles yet */
2351 if (b) {
2352 if (is_valid_policy_hnd(&dom_pol)) {
2353 NTSTATUS _result;
2354 dcerpc_samr_Close(b, state->mem_ctx, &dom_pol, &_result);
2355 }
2356 TALLOC_FREE(cli);
2357 }
2358 }
2359
2360 set_auth_errors(state->response, result);
2361
2362 DEBUG(NT_STATUS_IS_OK(result) ? 5 : 2,
2363 ("Password change for user [%s]\\[%s] returned %s (PAM: %d)\n",
2364 domain,
2365 user,
2366 state->response->data.auth.nt_status_string,
2367 state->response->data.auth.pam_error));
2368
2369 return NT_STATUS_IS_OK(result) ? WINBINDD_OK : WINBINDD_ERROR;
2370 }
2371
2372 enum winbindd_result winbindd_dual_pam_logoff(struct winbindd_domain *domain,
2373 struct winbindd_cli_state *state)
2374 {
2375 NTSTATUS result = NT_STATUS_NOT_SUPPORTED;
2376
2377 DEBUG(3, ("[%5lu]: pam dual logoff %s\n", (unsigned long)state->pid,
2378 state->request->data.logoff.user));
2379
2380 if (!(state->request->flags & WBFLAG_PAM_KRB5)) {
2381 result = NT_STATUS_OK;
2382 goto process_result;
2383 }
2384
2385 if (state->request->data.logoff.krb5ccname[0] == '\0') {
2386 result = NT_STATUS_OK;
2387 goto process_result;
2388 }
2389
2390 #ifdef HAVE_KRB5
2391
2392 if (state->request->data.logoff.uid == (uid_t)-1) {
2393 DEBUG(0,("winbindd_pam_logoff: invalid uid\n"));
2394 goto process_result;
2395 }
2396
2397 /* what we need here is to find the corresponding krb5 ccache name *we*
2398 * created for a given username and destroy it */
2399
2400 if (!ccache_entry_exists(state->request->data.logoff.user)) {
2401 result = NT_STATUS_OK;
2402 DEBUG(10,("winbindd_pam_logoff: no entry found.\n"));
2403 goto process_result;
2404 }
2405
2406 if (!ccache_entry_identical(state->request->data.logoff.user,
2407 state->request->data.logoff.uid,
2408 state->request->data.logoff.krb5ccname)) {
2409 DEBUG(0,("winbindd_pam_logoff: cached entry differs.\n"));
2410 goto process_result;
2411 }
2412
2413 result = remove_ccache(state->request->data.logoff.user);
2414 if (!NT_STATUS_IS_OK(result)) {
2415 DEBUG(0,("winbindd_pam_logoff: failed to remove ccache: %s\n",
2416 nt_errstr(result)));
2417 goto process_result;
2418 }
2419
2420 /*
2421 * Remove any mlock'ed memory creds in the child
2422 * we might be using for krb5 ticket renewal.
2423 */
2424
2425 winbindd_delete_memory_creds(state->request->data.logoff.user);
2426
2427 #else
2428 result = NT_STATUS_NOT_SUPPORTED;
2429 #endif
2430
2431 process_result:
2432
2433
2434 set_auth_errors(state->response, result);
2435
2436 return NT_STATUS_IS_OK(result) ? WINBINDD_OK : WINBINDD_ERROR;
2437 }
2438
2439 /* Change user password with auth crap*/
2440
2441 enum winbindd_result winbindd_dual_pam_chng_pswd_auth_crap(struct winbindd_domain *domainSt, struct winbindd_cli_state *state)
2442 {
2443 NTSTATUS result;
2444 DATA_BLOB new_nt_password;
2445 DATA_BLOB old_nt_hash_enc;
2446 DATA_BLOB new_lm_password;
2447 DATA_BLOB old_lm_hash_enc;
2448 fstring domain,user;
2449 struct policy_handle dom_pol;
2450 struct winbindd_domain *contact_domain = domainSt;
2451 struct rpc_pipe_client *cli = NULL;
2452 struct dcerpc_binding_handle *b = NULL;
2453
2454 ZERO_STRUCT(dom_pol);
2455
2456 /* Ensure null termination */
2457 state->request->data.chng_pswd_auth_crap.user[
2458 sizeof(state->request->data.chng_pswd_auth_crap.user)-1]=0;
2459 state->request->data.chng_pswd_auth_crap.domain[
2460 sizeof(state->request->data.chng_pswd_auth_crap.domain)-1]=0;
2461 *domain = 0;
2462 *user = 0;
2463
2464 DEBUG(3, ("[%5lu]: pam change pswd auth crap domain: %s user: %s\n",
2465 (unsigned long)state->pid,
2466 state->request->data.chng_pswd_auth_crap.domain,
2467 state->request->data.chng_pswd_auth_crap.user));
2468
2469 if (lp_winbind_offline_logon()) {
2470 DEBUG(0,("Refusing password change as winbind offline logons are enabled. "));
2471 DEBUGADD(0,("Changing passwords here would risk inconsistent logons\n"));
2472 result = NT_STATUS_ACCESS_DENIED;
2473 goto done;
2474 }
2475
2476 if (*state->request->data.chng_pswd_auth_crap.domain) {
2477 fstrcpy(domain,state->request->data.chng_pswd_auth_crap.domain);
2478 } else {
2479 parse_domain_user(state->request->data.chng_pswd_auth_crap.user,
2480 domain, user);
2481
2482 if(!*domain) {
2483 DEBUG(3,("no domain specified with username (%s) - "
2484 "failing auth\n",
2485 state->request->data.chng_pswd_auth_crap.user));
2486 result = NT_STATUS_NO_SUCH_USER;
2487 goto done;
2488 }
2489 }
2490
2491 if (!*domain && lp_winbind_use_default_domain()) {
2492 fstrcpy(domain,lp_workgroup());
2493 }
2494
2495 if(!*user) {
2496 fstrcpy(user, state->request->data.chng_pswd_auth_crap.user);
2497 }
2498
2499 DEBUG(3, ("[%5lu]: pam auth crap domain: %s user: %s\n",
2500 (unsigned long)state->pid, domain, user));
2501
2502 /* Change password */
2503 new_nt_password = data_blob_const(
2504 state->request->data.chng_pswd_auth_crap.new_nt_pswd,
2505 state->request->data.chng_pswd_auth_crap.new_nt_pswd_len);
2506
2507 old_nt_hash_enc = data_blob_const(
2508 state->request->data.chng_pswd_auth_crap.old_nt_hash_enc,
2509 state->request->data.chng_pswd_auth_crap.old_nt_hash_enc_len);
2510
2511 if(state->request->data.chng_pswd_auth_crap.new_lm_pswd_len > 0) {
2512 new_lm_password = data_blob_const(
2513 state->request->data.chng_pswd_auth_crap.new_lm_pswd,
2514 state->request->data.chng_pswd_auth_crap.new_lm_pswd_len);
2515
2516 old_lm_hash_enc = data_blob_const(
2517 state->request->data.chng_pswd_auth_crap.old_lm_hash_enc,
2518 state->request->data.chng_pswd_auth_crap.old_lm_hash_enc_len);
2519 } else {
2520 new_lm_password = data_blob_null;
2521 old_lm_hash_enc = data_blob_null;
2522 }
2523
2524 /* Get sam handle */
2525
2526 result = cm_connect_sam(contact_domain, state->mem_ctx, true, &cli, &dom_pol);
2527 if (!NT_STATUS_IS_OK(result)) {
2528 DEBUG(1, ("could not get SAM handle on DC for %s\n", domain));
2529 goto done;
2530 }
2531
2532 b = cli->binding_handle;
2533
2534 result = rpccli_samr_chng_pswd_auth_crap(
2535 cli, state->mem_ctx, user, new_nt_password, old_nt_hash_enc,
2536 new_lm_password, old_lm_hash_enc);
2537
2538 done:
2539
2540 if (strequal(contact_domain->name, get_global_sam_name())) {
2541 /* FIXME: internal rpc pipe does not cache handles yet */
2542 if (b) {
2543 if (is_valid_policy_hnd(&dom_pol)) {
2544 NTSTATUS _result;
2545 dcerpc_samr_Close(b, state->mem_ctx, &dom_pol, &_result);
2546 }
2547 TALLOC_FREE(cli);
2548 }
2549 }
2550
2551 set_auth_errors(state->response, result);
2552
2553 DEBUG(NT_STATUS_IS_OK(result) ? 5 : 2,
2554 ("Password change for user [%s]\\[%s] returned %s (PAM: %d)\n",
2555 domain, user,
2556 state->response->data.auth.nt_status_string,
2557 state->response->data.auth.pam_error));
2558
2559 return NT_STATUS_IS_OK(result) ? WINBINDD_OK : WINBINDD_ERROR;
2560 }
2561
2562 #ifdef HAVE_KRB5
2563 static NTSTATUS extract_pac_vrfy_sigs(TALLOC_CTX *mem_ctx, DATA_BLOB pac_blob,
2564 struct PAC_LOGON_INFO **logon_info)
2565 {
2566 krb5_context krbctx = NULL;
2567 krb5_error_code k5ret;
2568 krb5_keytab keytab;
2569 krb5_kt_cursor cursor;
2570 krb5_keytab_entry entry;
2571 NTSTATUS status = NT_STATUS_UNSUCCESSFUL;
2572
2573 ZERO_STRUCT(entry);
2574 ZERO_STRUCT(cursor);
2575
2576 k5ret = krb5_init_context(&krbctx);
2577 if (k5ret) {
2578 DEBUG(1, ("Failed to initialize kerberos context: %s\n",
2579 error_message(k5ret)));
2580 status = krb5_to_nt_status(k5ret);
2581 goto out;
2582 }
2583
2584 k5ret = gse_krb5_get_server_keytab(krbctx, &keytab);
2585 if (k5ret) {
2586 DEBUG(1, ("Failed to get keytab: %s\n",
2587 error_message(k5ret)));
2588 status = krb5_to_nt_status(k5ret);
2589 goto out_free;
2590 }
2591
2592 k5ret = krb5_kt_start_seq_get(krbctx, keytab, &cursor);
2593 if (k5ret) {
2594 DEBUG(1, ("Failed to start seq: %s\n",
2595 error_message(k5ret)));
2596 status = krb5_to_nt_status(k5ret);
2597 goto out_keytab;
2598 }
2599
2600 k5ret = krb5_kt_next_entry(krbctx, keytab, &entry, &cursor);
2601 while (k5ret == 0) {
2602 status = kerberos_pac_logon_info(mem_ctx, pac_blob,
2603 krbctx, NULL,
2604 KRB5_KT_KEY(&entry), NULL, 0,
2605 logon_info);
2606 if (NT_STATUS_IS_OK(status)) {
2607 break;
2608 }
2609 k5ret = smb_krb5_kt_free_entry(krbctx, &entry);
2610 k5ret = krb5_kt_next_entry(krbctx, keytab, &entry, &cursor);
2611 }
2612
2613 k5ret = krb5_kt_end_seq_get(krbctx, keytab, &cursor);
2614 if (k5ret) {
2615 DEBUG(1, ("Failed to end seq: %s\n",
2616 error_message(k5ret)));
2617 }
2618 out_keytab:
2619 k5ret = krb5_kt_close(krbctx, keytab);
2620 if (k5ret) {
2621 DEBUG(1, ("Failed to close keytab: %s\n",
2622 error_message(k5ret)));
2623 }
2624 out_free:
2625 krb5_free_context(krbctx);
2626 out:
2627 return status;
2628 }
2629
2630 NTSTATUS winbindd_pam_auth_pac_send(struct winbindd_cli_state *state,
2631 struct netr_SamInfo3 **info3)
2632 {
2633 struct winbindd_request *req = state->request;
2634 DATA_BLOB pac_blob;
2635 struct PAC_LOGON_INFO *logon_info = NULL;
2636 struct netr_SamInfo3 *info3_copy = NULL;
2637 NTSTATUS result;
2638
2639 pac_blob = data_blob_const(req->extra_data.data, req->extra_len);
2640 result = extract_pac_vrfy_sigs(state->mem_ctx, pac_blob, &logon_info);
2641 if (!NT_STATUS_IS_OK(result) &&
2642 !NT_STATUS_EQUAL(result, NT_STATUS_ACCESS_DENIED)) {
2643 DEBUG(1, ("Error during PAC signature verification: %s\n",
2644 nt_errstr(result)));
2645 return result;
2646 }
2647
2648 if (logon_info) {
2649 /*
2650 * Signature verification succeeded, we can
2651 * trust the PAC and prime the netsamlogon
2652 * and name2sid caches. DO NOT DO THIS
2653 * in the signature verification failed
2654 * code path.
2655 */
2656 struct winbindd_domain *domain = NULL;
2657
2658 result = create_info3_from_pac_logon_info(state->mem_ctx,
2659 logon_info,
2660 &info3_copy);
2661 if (!NT_STATUS_IS_OK(result)) {
2662 return result;
2663 }
2664 netsamlogon_cache_store(NULL, info3_copy);
2665
2666 /*
2667 * We're in the parent here, so find the child
2668 * pointer from the PAC domain name.
2669 */
2670 domain = find_domain_from_name_noinit(
2671 info3_copy->base.logon_domain.string);
2672 if (domain && domain->primary ) {
2673 struct dom_sid user_sid;
2674
2675 sid_compose(&user_sid,
2676 info3_copy->base.domain_sid,
2677 info3_copy->base.rid);
2678
2679 cache_name2sid_trusted(domain,
2680 info3_copy->base.logon_domain.string,
2681 info3_copy->base.account_name.string,
2682 SID_NAME_USER,
2683 &user_sid);
2684
2685 DBG_INFO("PAC for user %s\%s SID %s primed cache\n",
2686 info3_copy->base.logon_domain.string,
2687 info3_copy->base.account_name.string,
2688 sid_string_dbg(&user_sid));
2689 }
2690
2691 } else {
2692 /* Try without signature verification */
2693 result = kerberos_pac_logon_info(state->mem_ctx, pac_blob, NULL,
2694 NULL, NULL, NULL, 0,
2695 &logon_info);
2696 if (!NT_STATUS_IS_OK(result)) {
2697 DEBUG(10, ("Could not extract PAC: %s\n",
2698 nt_errstr(result)));
2699 return result;
2700 }
2701 if (logon_info) {
2702 /*
2703 * Don't strictly need to copy here,
2704 * but it makes it explicit we're
2705 * returning a copy talloc'ed off
2706 * the state->mem_ctx.
2707 */
2708 info3_copy = copy_netr_SamInfo3(state->mem_ctx,
2709 &logon_info->info3);
2710 if (info3_copy == NULL) {
2711 return NT_STATUS_NO_MEMORY;
2712 }
2713 }
2714 }
2715
2716 *info3 = info3_copy;
2717
2718 return NT_STATUS_OK;
2719 }
2720 #else /* HAVE_KRB5 */
2721 NTSTATUS winbindd_pam_auth_pac_send(struct winbindd_cli_state *state,
2722 struct netr_SamInfo3 **info3)
2723 {
2724 return NT_STATUS_NO_SUCH_USER;
2725 }
2726 #endif /* HAVE_KRB5 */
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