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s3-auth: rename static smb_create_user(). Sorry...
[Samba/gbeck.git] / source3 / auth / auth_util.c
blobcf6588ad828cfd51747280a59107d8ba5a59a557
1 /*
2 Unix SMB/CIFS implementation.
3 Authentication utility functions
4 Copyright (C) Andrew Tridgell 1992-1998
5 Copyright (C) Andrew Bartlett 2001
6 Copyright (C) Jeremy Allison 2000-2001
7 Copyright (C) Rafal Szczesniak 2002
8 Copyright (C) Volker Lendecke 2006
9
10 This program is free software; you can redistribute it and/or modify
11 it under the terms of the GNU General Public License as published by
12 the Free Software Foundation; either version 3 of the License, or
13 (at your option) any later version.
14
15 This program is distributed in the hope that it will be useful,
16 but WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 GNU General Public License for more details.
19
20 You should have received a copy of the GNU General Public License
21 along with this program. If not, see <http://www.gnu.org/licenses/>.
22 */
23
24 #include "includes.h"
25
26 #undef DBGC_CLASS
27 #define DBGC_CLASS DBGC_AUTH
28
29 /****************************************************************************
30 Ensure primary group SID is always at position 0 in a
31 auth_serversupplied_info struct.
32 ****************************************************************************/
33
34 static void sort_sid_array_for_smbd(auth_serversupplied_info *result,
35 const DOM_SID *pgroup_sid)
36 {
37 unsigned int i;
38
39 if (!result->sids) {
40 return;
41 }
42
43 if (sid_compare(&result->sids[0], pgroup_sid)==0) {
44 return;
45 }
46
47 for (i = 1; i < result->num_sids; i++) {
48 if (sid_compare(pgroup_sid,
49 &result->sids[i]) == 0) {
50 sid_copy(&result->sids[i], &result->sids[0]);
51 sid_copy(&result->sids[0], pgroup_sid);
52 return;
53 }
54 }
55 }
56
57 /****************************************************************************
58 Create a UNIX user on demand.
59 ****************************************************************************/
60
61 static int _smb_create_user(const char *domain, const char *unix_username, const char *homedir)
62 {
63 TALLOC_CTX *ctx = talloc_tos();
64 char *add_script;
65 int ret;
66
67 add_script = talloc_strdup(ctx, lp_adduser_script());
68 if (!add_script || !*add_script) {
69 return -1;
70 }
71 add_script = talloc_all_string_sub(ctx,
72 add_script,
73 "%u",
74 unix_username);
75 if (!add_script) {
76 return -1;
77 }
78 if (domain) {
79 add_script = talloc_all_string_sub(ctx,
80 add_script,
81 "%D",
82 domain);
83 if (!add_script) {
84 return -1;
85 }
86 }
87 if (homedir) {
88 add_script = talloc_all_string_sub(ctx,
89 add_script,
90 "%H",
91 homedir);
92 if (!add_script) {
93 return -1;
94 }
95 }
96 ret = smbrun(add_script,NULL);
97 flush_pwnam_cache();
98 DEBUG(ret ? 0 : 3,
99 ("smb_create_user: Running the command `%s' gave %d\n",
100 add_script,ret));
101 return ret;
102 }
103
104 /****************************************************************************
105 Create an auth_usersupplied_data structure
106 ****************************************************************************/
107
108 static NTSTATUS make_user_info(auth_usersupplied_info **user_info,
109 const char *smb_name,
110 const char *internal_username,
111 const char *client_domain,
112 const char *domain,
113 const char *wksta_name,
114 DATA_BLOB *lm_pwd, DATA_BLOB *nt_pwd,
115 DATA_BLOB *lm_interactive_pwd, DATA_BLOB *nt_interactive_pwd,
116 DATA_BLOB *plaintext,
117 bool encrypted)
118 {
119
120 DEBUG(5,("attempting to make a user_info for %s (%s)\n", internal_username, smb_name));
121
122 *user_info = SMB_MALLOC_P(auth_usersupplied_info);
123 if (*user_info == NULL) {
124 DEBUG(0,("malloc failed for user_info (size %lu)\n", (unsigned long)sizeof(*user_info)));
125 return NT_STATUS_NO_MEMORY;
126 }
127
128 ZERO_STRUCTP(*user_info);
129
130 DEBUG(5,("making strings for %s's user_info struct\n", internal_username));
131
132 (*user_info)->smb_name = SMB_STRDUP(smb_name);
133 if ((*user_info)->smb_name == NULL) {
134 free_user_info(user_info);
135 return NT_STATUS_NO_MEMORY;
136 }
137
138 (*user_info)->internal_username = SMB_STRDUP(internal_username);
139 if ((*user_info)->internal_username == NULL) {
140 free_user_info(user_info);
141 return NT_STATUS_NO_MEMORY;
142 }
143
144 (*user_info)->domain = SMB_STRDUP(domain);
145 if ((*user_info)->domain == NULL) {
146 free_user_info(user_info);
147 return NT_STATUS_NO_MEMORY;
148 }
149
150 (*user_info)->client_domain = SMB_STRDUP(client_domain);
151 if ((*user_info)->client_domain == NULL) {
152 free_user_info(user_info);
153 return NT_STATUS_NO_MEMORY;
154 }
155
156 (*user_info)->wksta_name = SMB_STRDUP(wksta_name);
157 if ((*user_info)->wksta_name == NULL) {
158 free_user_info(user_info);
159 return NT_STATUS_NO_MEMORY;
160 }
161
162 DEBUG(5,("making blobs for %s's user_info struct\n", internal_username));
163
164 if (lm_pwd)
165 (*user_info)->lm_resp = data_blob(lm_pwd->data, lm_pwd->length);
166 if (nt_pwd)
167 (*user_info)->nt_resp = data_blob(nt_pwd->data, nt_pwd->length);
168 if (lm_interactive_pwd)
169 (*user_info)->lm_interactive_pwd = data_blob(lm_interactive_pwd->data, lm_interactive_pwd->length);
170 if (nt_interactive_pwd)
171 (*user_info)->nt_interactive_pwd = data_blob(nt_interactive_pwd->data, nt_interactive_pwd->length);
172
173 if (plaintext)
174 (*user_info)->plaintext_password = data_blob(plaintext->data, plaintext->length);
175
176 (*user_info)->encrypted = encrypted;
177
178 (*user_info)->logon_parameters = 0;
179
180 DEBUG(10,("made an %sencrypted user_info for %s (%s)\n", encrypted ? "":"un" , internal_username, smb_name));
181
182 return NT_STATUS_OK;
183 }
184
185 /****************************************************************************
186 Create an auth_usersupplied_data structure after appropriate mapping.
187 ****************************************************************************/
188
189 NTSTATUS make_user_info_map(auth_usersupplied_info **user_info,
190 const char *smb_name,
191 const char *client_domain,
192 const char *wksta_name,
193 DATA_BLOB *lm_pwd,
194 DATA_BLOB *nt_pwd,
195 DATA_BLOB *lm_interactive_pwd,
196 DATA_BLOB *nt_interactive_pwd,
197 DATA_BLOB *plaintext,
198 bool encrypted)
199 {
200 const char *domain;
201 NTSTATUS result;
202 bool was_mapped;
203 fstring internal_username;
204 fstrcpy(internal_username, smb_name);
205 was_mapped = map_username(internal_username);
206
207 DEBUG(5, ("Mapping user [%s]\\[%s] from workstation [%s]\n",
208 client_domain, smb_name, wksta_name));
209
210 /* don't allow "" as a domain, fixes a Win9X bug
211 where it doens't supply a domain for logon script
212 'net use' commands. */
213
214 if ( *client_domain )
215 domain = client_domain;
216 else
217 domain = lp_workgroup();
218
219 /* If you connect to a Windows domain member using a bogus domain name,
220 * the Windows box will map the BOGUS\user to SAMNAME\user. Thus, if
221 * the Windows box is a DC the name will become DOMAIN\user and be
222 * authenticated against AD, if the Windows box is a member server but
223 * not a DC the name will become WORKSTATION\user. A standalone
224 * non-domain member box will also map to WORKSTATION\user. */
225
226 if (!is_trusted_domain(domain) &&
227 !strequal(domain, get_global_sam_name()) )
228 {
229 if (lp_map_untrusted_to_domain())
230 domain = my_sam_name();
231 else
232 domain = get_global_sam_name();
233 DEBUG(5, ("Mapped domain from [%s] to [%s] for user [%s] from "
234 "workstation [%s]\n",
235 client_domain, domain, smb_name, wksta_name));
236 }
237
238 /* We know that the given domain is trusted (and we are allowing them),
239 * it is our global SAM name, or for legacy behavior it is our
240 * primary domain name */
241
242 result = make_user_info(user_info, smb_name, internal_username,
243 client_domain, domain, wksta_name,
244 lm_pwd, nt_pwd,
245 lm_interactive_pwd, nt_interactive_pwd,
246 plaintext, encrypted);
247 if (NT_STATUS_IS_OK(result)) {
248 (*user_info)->was_mapped = was_mapped;
249 }
250 return result;
251 }
252
253 /****************************************************************************
254 Create an auth_usersupplied_data, making the DATA_BLOBs here.
255 Decrypt and encrypt the passwords.
256 ****************************************************************************/
257
258 bool make_user_info_netlogon_network(auth_usersupplied_info **user_info,
259 const char *smb_name,
260 const char *client_domain,
261 const char *wksta_name,
262 uint32 logon_parameters,
263 const uchar *lm_network_pwd,
264 int lm_pwd_len,
265 const uchar *nt_network_pwd,
266 int nt_pwd_len)
267 {
268 bool ret;
269 NTSTATUS status;
270 DATA_BLOB lm_blob = data_blob(lm_network_pwd, lm_pwd_len);
271 DATA_BLOB nt_blob = data_blob(nt_network_pwd, nt_pwd_len);
272
273 status = make_user_info_map(user_info,
274 smb_name, client_domain,
275 wksta_name,
276 lm_pwd_len ? &lm_blob : NULL,
277 nt_pwd_len ? &nt_blob : NULL,
278 NULL, NULL, NULL,
279 True);
280
281 if (NT_STATUS_IS_OK(status)) {
282 (*user_info)->logon_parameters = logon_parameters;
283 }
284 ret = NT_STATUS_IS_OK(status) ? True : False;
285
286 data_blob_free(&lm_blob);
287 data_blob_free(&nt_blob);
288 return ret;
289 }
290
291 /****************************************************************************
292 Create an auth_usersupplied_data, making the DATA_BLOBs here.
293 Decrypt and encrypt the passwords.
294 ****************************************************************************/
295
296 bool make_user_info_netlogon_interactive(auth_usersupplied_info **user_info,
297 const char *smb_name,
298 const char *client_domain,
299 const char *wksta_name,
300 uint32 logon_parameters,
301 const uchar chal[8],
302 const uchar lm_interactive_pwd[16],
303 const uchar nt_interactive_pwd[16],
304 const uchar *dc_sess_key)
305 {
306 unsigned char lm_pwd[16];
307 unsigned char nt_pwd[16];
308 unsigned char local_lm_response[24];
309 unsigned char local_nt_response[24];
310 unsigned char key[16];
311
312 ZERO_STRUCT(key);
313 memcpy(key, dc_sess_key, 8);
314
315 if (lm_interactive_pwd)
316 memcpy(lm_pwd, lm_interactive_pwd, sizeof(lm_pwd));
317
318 if (nt_interactive_pwd)
319 memcpy(nt_pwd, nt_interactive_pwd, sizeof(nt_pwd));
320
321 #ifdef DEBUG_PASSWORD
322 DEBUG(100,("key:"));
323 dump_data(100, key, sizeof(key));
324
325 DEBUG(100,("lm owf password:"));
326 dump_data(100, lm_pwd, sizeof(lm_pwd));
327
328 DEBUG(100,("nt owf password:"));
329 dump_data(100, nt_pwd, sizeof(nt_pwd));
330 #endif
331
332 if (lm_interactive_pwd)
333 SamOEMhash(lm_pwd, key, sizeof(lm_pwd));
334
335 if (nt_interactive_pwd)
336 SamOEMhash(nt_pwd, key, sizeof(nt_pwd));
337
338 #ifdef DEBUG_PASSWORD
339 DEBUG(100,("decrypt of lm owf password:"));
340 dump_data(100, lm_pwd, sizeof(lm_pwd));
341
342 DEBUG(100,("decrypt of nt owf password:"));
343 dump_data(100, nt_pwd, sizeof(nt_pwd));
344 #endif
345
346 if (lm_interactive_pwd)
347 SMBOWFencrypt(lm_pwd, chal,
348 local_lm_response);
349
350 if (nt_interactive_pwd)
351 SMBOWFencrypt(nt_pwd, chal,
352 local_nt_response);
353
354 /* Password info paranoia */
355 ZERO_STRUCT(key);
356
357 {
358 bool ret;
359 NTSTATUS nt_status;
360 DATA_BLOB local_lm_blob;
361 DATA_BLOB local_nt_blob;
362
363 DATA_BLOB lm_interactive_blob;
364 DATA_BLOB nt_interactive_blob;
365
366 if (lm_interactive_pwd) {
367 local_lm_blob = data_blob(local_lm_response,
368 sizeof(local_lm_response));
369 lm_interactive_blob = data_blob(lm_pwd,
370 sizeof(lm_pwd));
371 ZERO_STRUCT(lm_pwd);
372 }
373
374 if (nt_interactive_pwd) {
375 local_nt_blob = data_blob(local_nt_response,
376 sizeof(local_nt_response));
377 nt_interactive_blob = data_blob(nt_pwd,
378 sizeof(nt_pwd));
379 ZERO_STRUCT(nt_pwd);
380 }
381
382 nt_status = make_user_info_map(
383 user_info,
384 smb_name, client_domain, wksta_name,
385 lm_interactive_pwd ? &local_lm_blob : NULL,
386 nt_interactive_pwd ? &local_nt_blob : NULL,
387 lm_interactive_pwd ? &lm_interactive_blob : NULL,
388 nt_interactive_pwd ? &nt_interactive_blob : NULL,
389 NULL, True);
390
391 if (NT_STATUS_IS_OK(nt_status)) {
392 (*user_info)->logon_parameters = logon_parameters;
393 }
394
395 ret = NT_STATUS_IS_OK(nt_status) ? True : False;
396 data_blob_free(&local_lm_blob);
397 data_blob_free(&local_nt_blob);
398 data_blob_free(&lm_interactive_blob);
399 data_blob_free(&nt_interactive_blob);
400 return ret;
401 }
402 }
403
404
405 /****************************************************************************
406 Create an auth_usersupplied_data structure
407 ****************************************************************************/
408
409 bool make_user_info_for_reply(auth_usersupplied_info **user_info,
410 const char *smb_name,
411 const char *client_domain,
412 const uint8 chal[8],
413 DATA_BLOB plaintext_password)
414 {
415
416 DATA_BLOB local_lm_blob;
417 DATA_BLOB local_nt_blob;
418 NTSTATUS ret = NT_STATUS_UNSUCCESSFUL;
419
420 /*
421 * Not encrypted - do so.
422 */
423
424 DEBUG(5,("make_user_info_for_reply: User passwords not in encrypted "
425 "format.\n"));
426
427 if (plaintext_password.data) {
428 unsigned char local_lm_response[24];
429
430 #ifdef DEBUG_PASSWORD
431 DEBUG(10,("Unencrypted password (len %d):\n",
432 (int)plaintext_password.length));
433 dump_data(100, plaintext_password.data,
434 plaintext_password.length);
435 #endif
436
437 SMBencrypt( (const char *)plaintext_password.data,
438 (const uchar*)chal, local_lm_response);
439 local_lm_blob = data_blob(local_lm_response, 24);
440
441 /* We can't do an NT hash here, as the password needs to be
442 case insensitive */
443 local_nt_blob = data_blob_null;
444
445 } else {
446 local_lm_blob = data_blob_null;
447 local_nt_blob = data_blob_null;
448 }
449
450 ret = make_user_info_map(
451 user_info, smb_name, client_domain,
452 get_remote_machine_name(),
453 local_lm_blob.data ? &local_lm_blob : NULL,
454 local_nt_blob.data ? &local_nt_blob : NULL,
455 NULL, NULL,
456 plaintext_password.data ? &plaintext_password : NULL,
457 False);
458
459 data_blob_free(&local_lm_blob);
460 return NT_STATUS_IS_OK(ret) ? True : False;
461 }
462
463 /****************************************************************************
464 Create an auth_usersupplied_data structure
465 ****************************************************************************/
466
467 NTSTATUS make_user_info_for_reply_enc(auth_usersupplied_info **user_info,
468 const char *smb_name,
469 const char *client_domain,
470 DATA_BLOB lm_resp, DATA_BLOB nt_resp)
471 {
472 return make_user_info_map(user_info, smb_name,
473 client_domain,
474 get_remote_machine_name(),
475 lm_resp.data ? &lm_resp : NULL,
476 nt_resp.data ? &nt_resp : NULL,
477 NULL, NULL, NULL,
478 True);
479 }
480
481 /****************************************************************************
482 Create a guest user_info blob, for anonymous authenticaion.
483 ****************************************************************************/
484
485 bool make_user_info_guest(auth_usersupplied_info **user_info)
486 {
487 NTSTATUS nt_status;
488
489 nt_status = make_user_info(user_info,
490 "","",
491 "","",
492 "",
493 NULL, NULL,
494 NULL, NULL,
495 NULL,
496 True);
497
498 return NT_STATUS_IS_OK(nt_status) ? True : False;
499 }
500
501 static int server_info_dtor(auth_serversupplied_info *server_info)
502 {
503 TALLOC_FREE(server_info->sam_account);
504 ZERO_STRUCTP(server_info);
505 return 0;
506 }
507
508 /***************************************************************************
509 Make a server_info struct. Free with TALLOC_FREE().
510 ***************************************************************************/
511
512 static auth_serversupplied_info *make_server_info(TALLOC_CTX *mem_ctx)
513 {
514 struct auth_serversupplied_info *result;
515
516 result = TALLOC_ZERO_P(mem_ctx, auth_serversupplied_info);
517 if (result == NULL) {
518 DEBUG(0, ("talloc failed\n"));
519 return NULL;
520 }
521
522 talloc_set_destructor(result, server_info_dtor);
523
524 /* Initialise the uid and gid values to something non-zero
525 which may save us from giving away root access if there
526 is a bug in allocating these fields. */
527
528 result->utok.uid = -1;
529 result->utok.gid = -1;
530 return result;
531 }
532
533 static char *sanitize_username(TALLOC_CTX *mem_ctx, const char *username)
534 {
535 fstring tmp;
536
537 alpha_strcpy(tmp, username, ". _-$", sizeof(tmp));
538 return talloc_strdup(mem_ctx, tmp);
539 }
540
541 /***************************************************************************
542 Is the incoming username our own machine account ?
543 If so, the connection is almost certainly from winbindd.
544 ***************************************************************************/
545
546 static bool is_our_machine_account(const char *username)
547 {
548 bool ret;
549 char *truncname = NULL;
550 size_t ulen = strlen(username);
551
552 if (ulen == 0 || username[ulen-1] != '$') {
553 return false;
554 }
555 truncname = SMB_STRDUP(username);
556 if (!truncname) {
557 return false;
558 }
559 truncname[ulen-1] = '\0';
560 ret = strequal(truncname, global_myname());
561 SAFE_FREE(truncname);
562 return ret;
563 }
564
565 /***************************************************************************
566 Make (and fill) a user_info struct from a struct samu
567 ***************************************************************************/
568
569 NTSTATUS make_server_info_sam(auth_serversupplied_info **server_info,
570 struct samu *sampass)
571 {
572 struct passwd *pwd;
573 gid_t *gids;
574 auth_serversupplied_info *result;
575 const char *username = pdb_get_username(sampass);
576 NTSTATUS status;
577
578 if ( !(result = make_server_info(NULL)) ) {
579 return NT_STATUS_NO_MEMORY;
580 }
581
582 if ( !(pwd = getpwnam_alloc(result, username)) ) {
583 DEBUG(1, ("User %s in passdb, but getpwnam() fails!\n",
584 pdb_get_username(sampass)));
585 TALLOC_FREE(result);
586 return NT_STATUS_NO_SUCH_USER;
587 }
588
589 result->sam_account = sampass;
590 result->unix_name = pwd->pw_name;
591 /* Ensure that we keep pwd->pw_name, because we will free pwd below */
592 talloc_steal(result, pwd->pw_name);
593 result->utok.gid = pwd->pw_gid;
594 result->utok.uid = pwd->pw_uid;
595
596 TALLOC_FREE(pwd);
597
598 result->sanitized_username = sanitize_username(result,
599 result->unix_name);
600 if (result->sanitized_username == NULL) {
601 TALLOC_FREE(result);
602 return NT_STATUS_NO_MEMORY;
603 }
604
605 if (IS_DC && is_our_machine_account(username)) {
606 /*
607 * Ensure for a connection from our own
608 * machine account (from winbindd on a DC)
609 * there are no supplementary groups.
610 * Prevents loops in calling gid_to_sid().
611 */
612 result->sids = NULL;
613 gids = NULL;
614 result->num_sids = 0;
615
616 /*
617 * This is a hack of monstrous proportions.
618 * If we know it's winbindd talking to us,
619 * we know we must never recurse into it,
620 * so turn off contacting winbindd for this
621 * entire process. This will get fixed when
622 * winbindd doesn't need to talk to smbd on
623 * a PDC. JRA.
624 */
625
626 (void)winbind_off();
627
628 DEBUG(10, ("make_server_info_sam: our machine account %s "
629 "setting supplementary group list empty and "
630 "turning off winbindd requests.\n",
631 username));
632 } else {
633 status = pdb_enum_group_memberships(result, sampass,
634 &result->sids, &gids,
635 &result->num_sids);
636
637 if (!NT_STATUS_IS_OK(status)) {
638 DEBUG(10, ("pdb_enum_group_memberships failed: %s\n",
639 nt_errstr(status)));
640 result->sam_account = NULL; /* Don't free on error exit. */
641 TALLOC_FREE(result);
642 return status;
643 }
644 }
645
646 /* For now we throw away the gids and convert via sid_to_gid
647 * later. This needs fixing, but I'd like to get the code straight and
648 * simple first. */
649
650 TALLOC_FREE(gids);
651
652 DEBUG(5,("make_server_info_sam: made server info for user %s -> %s\n",
653 pdb_get_username(sampass), result->unix_name));
654
655 *server_info = result;
656 /* Ensure that the sampass will be freed with the result */
657 talloc_steal(result, sampass);
658
659 return NT_STATUS_OK;
660 }
661
662 static NTSTATUS log_nt_token(NT_USER_TOKEN *token)
663 {
664 TALLOC_CTX *frame = talloc_stackframe();
665 char *command;
666 char *group_sidstr;
667 size_t i;
668
669 if ((lp_log_nt_token_command() == NULL) ||
670 (strlen(lp_log_nt_token_command()) == 0)) {
671 TALLOC_FREE(frame);
672 return NT_STATUS_OK;
673 }
674
675 group_sidstr = talloc_strdup(frame, "");
676 for (i=1; i<token->num_sids; i++) {
677 group_sidstr = talloc_asprintf(
678 frame, "%s %s", group_sidstr,
679 sid_string_talloc(frame, &token->user_sids[i]));
680 }
681
682 command = talloc_string_sub(
683 frame, lp_log_nt_token_command(),
684 "%s", sid_string_talloc(frame, &token->user_sids[0]));
685 command = talloc_string_sub(frame, command, "%t", group_sidstr);
686
687 if (command == NULL) {
688 TALLOC_FREE(frame);
689 return NT_STATUS_NO_MEMORY;
690 }
691
692 DEBUG(8, ("running command: [%s]\n", command));
693 if (smbrun(command, NULL) != 0) {
694 DEBUG(0, ("Could not log NT token\n"));
695 TALLOC_FREE(frame);
696 return NT_STATUS_ACCESS_DENIED;
697 }
698
699 TALLOC_FREE(frame);
700 return NT_STATUS_OK;
701 }
702
703 /*
704 * Create the token to use from server_info->sam_account and
705 * server_info->sids (the info3/sam groups). Find the unix gids.
706 */
707
708 NTSTATUS create_local_token(auth_serversupplied_info *server_info)
709 {
710 NTSTATUS status;
711 size_t i;
712 struct dom_sid tmp_sid;
713
714 /*
715 * If winbind is not around, we can not make much use of the SIDs the
716 * domain controller provided us with. Likewise if the user name was
717 * mapped to some local unix user.
718 */
719
720 if (((lp_server_role() == ROLE_DOMAIN_MEMBER) && !winbind_ping()) ||
721 (server_info->nss_token)) {
722 status = create_token_from_username(server_info,
723 server_info->unix_name,
724 server_info->guest,
725 &server_info->utok.uid,
726 &server_info->utok.gid,
727 &server_info->unix_name,
728 &server_info->ptok);
729
730 } else {
731 server_info->ptok = create_local_nt_token(
732 server_info,
733 pdb_get_user_sid(server_info->sam_account),
734 server_info->guest,
735 server_info->num_sids, server_info->sids);
736 status = server_info->ptok ?
737 NT_STATUS_OK : NT_STATUS_NO_SUCH_USER;
738 }
739
740 if (!NT_STATUS_IS_OK(status)) {
741 return status;
742 }
743
744 /* Convert the SIDs to gids. */
745
746 server_info->utok.ngroups = 0;
747 server_info->utok.groups = NULL;
748
749 /* Start at index 1, where the groups start. */
750
751 for (i=1; i<server_info->ptok->num_sids; i++) {
752 gid_t gid;
753 DOM_SID *sid = &server_info->ptok->user_sids[i];
754
755 if (!sid_to_gid(sid, &gid)) {
756 DEBUG(10, ("Could not convert SID %s to gid, "
757 "ignoring it\n", sid_string_dbg(sid)));
758 continue;
759 }
760 add_gid_to_array_unique(server_info, gid,
761 &server_info->utok.groups,
762 &server_info->utok.ngroups);
763 }
764
765 /*
766 * Add the "Unix Group" SID for each gid to catch mapped groups
767 * and their Unix equivalent. This is to solve the backwards
768 * compatibility problem of 'valid users = +ntadmin' where
769 * ntadmin has been paired with "Domain Admins" in the group
770 * mapping table. Otherwise smb.conf would need to be changed
771 * to 'valid user = "Domain Admins"'. --jerry
772 *
773 * For consistency we also add the "Unix User" SID,
774 * so that the complete unix token is represented within
775 * the nt token.
776 */
777
778 if (!uid_to_unix_users_sid(server_info->utok.uid, &tmp_sid)) {
779 DEBUG(1,("create_local_token: Failed to create SID "
780 "for uid %d!\n", server_info->utok.uid));
781 }
782 add_sid_to_array_unique(server_info->ptok, &tmp_sid,
783 &server_info->ptok->user_sids,
784 &server_info->ptok->num_sids);
785
786 for ( i=0; i<server_info->utok.ngroups; i++ ) {
787 if (!gid_to_unix_groups_sid( server_info->utok.groups[i], &tmp_sid ) ) {
788 DEBUG(1,("create_local_token: Failed to create SID "
789 "for gid %d!\n", server_info->utok.groups[i]));
790 continue;
791 }
792 add_sid_to_array_unique(server_info->ptok, &tmp_sid,
793 &server_info->ptok->user_sids,
794 &server_info->ptok->num_sids);
795 }
796
797 debug_nt_user_token(DBGC_AUTH, 10, server_info->ptok);
798 debug_unix_user_token(DBGC_AUTH, 10,
799 server_info->utok.uid,
800 server_info->utok.gid,
801 server_info->utok.ngroups,
802 server_info->utok.groups);
803
804 status = log_nt_token(server_info->ptok);
805 return status;
806 }
807
808 /*
809 * Create an artificial NT token given just a username. (Initially intended
810 * for force user)
811 *
812 * We go through lookup_name() to avoid problems we had with 'winbind use
813 * default domain'.
814 *
815 * We have 3 cases:
816 *
817 * unmapped unix users: Go directly to nss to find the user's group.
818 *
819 * A passdb user: The list of groups is provided by pdb_enum_group_memberships.
820 *
821 * If the user is provided by winbind, the primary gid is set to "domain
822 * users" of the user's domain. For an explanation why this is necessary, see
823 * the thread starting at
824 * http://lists.samba.org/archive/samba-technical/2006-January/044803.html.
825 */
826
827 NTSTATUS create_token_from_username(TALLOC_CTX *mem_ctx, const char *username,
828 bool is_guest,
829 uid_t *uid, gid_t *gid,
830 char **found_username,
831 struct nt_user_token **token)
832 {
833 NTSTATUS result = NT_STATUS_NO_SUCH_USER;
834 TALLOC_CTX *tmp_ctx;
835 DOM_SID user_sid;
836 enum lsa_SidType type;
837 gid_t *gids;
838 DOM_SID *group_sids;
839 DOM_SID unix_group_sid;
840 size_t num_group_sids;
841 size_t num_gids;
842 size_t i;
843
844 tmp_ctx = talloc_new(NULL);
845 if (tmp_ctx == NULL) {
846 DEBUG(0, ("talloc_new failed\n"));
847 return NT_STATUS_NO_MEMORY;
848 }
849
850 if (!lookup_name_smbconf(tmp_ctx, username, LOOKUP_NAME_ALL,
851 NULL, NULL, &user_sid, &type)) {
852 DEBUG(1, ("lookup_name_smbconf for %s failed\n", username));
853 goto done;
854 }
855
856 if (type != SID_NAME_USER) {
857 DEBUG(1, ("%s is a %s, not a user\n", username,
858 sid_type_lookup(type)));
859 goto done;
860 }
861
862 if (sid_check_is_in_our_domain(&user_sid)) {
863 bool ret;
864
865 /* This is a passdb user, so ask passdb */
866
867 struct samu *sam_acct = NULL;
868
869 if ( !(sam_acct = samu_new( tmp_ctx )) ) {
870 result = NT_STATUS_NO_MEMORY;
871 goto done;
872 }
873
874 become_root();
875 ret = pdb_getsampwsid(sam_acct, &user_sid);
876 unbecome_root();
877
878 if (!ret) {
879 DEBUG(1, ("pdb_getsampwsid(%s) for user %s failed\n",
880 sid_string_dbg(&user_sid), username));
881 DEBUGADD(1, ("Fall back to unix user %s\n", username));
882 goto unix_user;
883 }
884
885 result = pdb_enum_group_memberships(tmp_ctx, sam_acct,
886 &group_sids, &gids,
887 &num_group_sids);
888 if (!NT_STATUS_IS_OK(result)) {
889 DEBUG(10, ("enum_group_memberships failed for %s\n",
890 username));
891 DEBUGADD(1, ("Fall back to unix user %s\n", username));
892 goto unix_user;
893 }
894
895 /* see the smb_panic() in pdb_default_enum_group_memberships */
896 SMB_ASSERT(num_group_sids > 0);
897
898 *gid = gids[0];
899
900 /* Ensure we're returning the found_username on the right context. */
901 *found_username = talloc_strdup(mem_ctx,
902 pdb_get_username(sam_acct));
903
904 } else if (sid_check_is_in_unix_users(&user_sid)) {
905
906 /* This is a unix user not in passdb. We need to ask nss
907 * directly, without consulting passdb */
908
909 struct passwd *pass;
910
911 /*
912 * This goto target is used as a fallback for the passdb
913 * case. The concrete bug report is when passdb gave us an
914 * unmapped gid.
915 */
916
917 unix_user:
918
919 if (!sid_to_uid(&user_sid, uid)) {
920 DEBUG(1, ("sid_to_uid for %s (%s) failed\n",
921 username, sid_string_dbg(&user_sid)));
922 goto done;
923 }
924
925 uid_to_unix_users_sid(*uid, &user_sid);
926
927 pass = getpwuid_alloc(tmp_ctx, *uid);
928 if (pass == NULL) {
929 DEBUG(1, ("getpwuid(%d) for user %s failed\n",
930 *uid, username));
931 goto done;
932 }
933
934 if (!getgroups_unix_user(tmp_ctx, username, pass->pw_gid,
935 &gids, &num_group_sids)) {
936 DEBUG(1, ("getgroups_unix_user for user %s failed\n",
937 username));
938 goto done;
939 }
940
941 if (num_group_sids) {
942 group_sids = TALLOC_ARRAY(tmp_ctx, DOM_SID, num_group_sids);
943 if (group_sids == NULL) {
944 DEBUG(1, ("TALLOC_ARRAY failed\n"));
945 result = NT_STATUS_NO_MEMORY;
946 goto done;
947 }
948 } else {
949 group_sids = NULL;
950 }
951
952 for (i=0; i<num_group_sids; i++) {
953 gid_to_sid(&group_sids[i], gids[i]);
954 }
955
956 /* In getgroups_unix_user we always set the primary gid */
957 SMB_ASSERT(num_group_sids > 0);
958
959 *gid = gids[0];
960
961 /* Ensure we're returning the found_username on the right context. */
962 *found_username = talloc_strdup(mem_ctx, pass->pw_name);
963 } else {
964
965 /* This user is from winbind, force the primary gid to the
966 * user's "domain users" group. Under certain circumstances
967 * (user comes from NT4), this might be a loss of
968 * information. But we can not rely on winbind getting the
969 * correct info. AD might prohibit winbind looking up that
970 * information. */
971
972 uint32 dummy;
973
974 num_group_sids = 1;
975 group_sids = TALLOC_ARRAY(tmp_ctx, DOM_SID, num_group_sids);
976 if (group_sids == NULL) {
977 DEBUG(1, ("TALLOC_ARRAY failed\n"));
978 result = NT_STATUS_NO_MEMORY;
979 goto done;
980 }
981
982 sid_copy(&group_sids[0], &user_sid);
983 sid_split_rid(&group_sids[0], &dummy);
984 sid_append_rid(&group_sids[0], DOMAIN_GROUP_RID_USERS);
985
986 if (!sid_to_gid(&group_sids[0], gid)) {
987 DEBUG(1, ("sid_to_gid(%s) failed\n",
988 sid_string_dbg(&group_sids[0])));
989 goto done;
990 }
991
992 gids = gid;
993
994 /* Ensure we're returning the found_username on the right context. */
995 *found_username = talloc_strdup(mem_ctx, username);
996 }
997
998 /* Add the "Unix Group" SID for each gid to catch mapped groups
999 and their Unix equivalent. This is to solve the backwards
1000 compatibility problem of 'valid users = +ntadmin' where
1001 ntadmin has been paired with "Domain Admins" in the group
1002 mapping table. Otherwise smb.conf would need to be changed
1003 to 'valid user = "Domain Admins"'. --jerry */
1004
1005 num_gids = num_group_sids;
1006 for ( i=0; i<num_gids; i++ ) {
1007 gid_t high, low;
1008
1009 /* don't pickup anything managed by Winbind */
1010
1011 if ( lp_idmap_gid(&low, &high) && (gids[i] >= low) && (gids[i] <= high) )
1012 continue;
1013
1014 if ( !gid_to_unix_groups_sid( gids[i], &unix_group_sid ) ) {
1015 DEBUG(1,("create_token_from_username: Failed to create SID "
1016 "for gid %d!\n", gids[i]));
1017 continue;
1018 }
1019 result = add_sid_to_array_unique(tmp_ctx, &unix_group_sid,
1020 &group_sids, &num_group_sids);
1021 if (!NT_STATUS_IS_OK(result)) {
1022 goto done;
1023 }
1024 }
1025
1026 /* Ensure we're creating the nt_token on the right context. */
1027 *token = create_local_nt_token(mem_ctx, &user_sid,
1028 is_guest, num_group_sids, group_sids);
1029
1030 if ((*token == NULL) || (*found_username == NULL)) {
1031 result = NT_STATUS_NO_MEMORY;
1032 goto done;
1033 }
1034
1035 result = NT_STATUS_OK;
1036 done:
1037 TALLOC_FREE(tmp_ctx);
1038 return result;
1039 }
1040
1041 /***************************************************************************
1042 Build upon create_token_from_username:
1043
1044 Expensive helper function to figure out whether a user given its name is
1045 member of a particular group.
1046 ***************************************************************************/
1047
1048 bool user_in_group_sid(const char *username, const DOM_SID *group_sid)
1049 {
1050 NTSTATUS status;
1051 uid_t uid;
1052 gid_t gid;
1053 char *found_username;
1054 struct nt_user_token *token;
1055 bool result;
1056
1057 TALLOC_CTX *mem_ctx;
1058
1059 mem_ctx = talloc_new(NULL);
1060 if (mem_ctx == NULL) {
1061 DEBUG(0, ("talloc_new failed\n"));
1062 return False;
1063 }
1064
1065 status = create_token_from_username(mem_ctx, username, False,
1066 &uid, &gid, &found_username,
1067 &token);
1068
1069 if (!NT_STATUS_IS_OK(status)) {
1070 DEBUG(10, ("could not create token for %s\n", username));
1071 return False;
1072 }
1073
1074 result = nt_token_check_sid(group_sid, token);
1075
1076 TALLOC_FREE(mem_ctx);
1077 return result;
1078
1079 }
1080
1081 bool user_in_group(const char *username, const char *groupname)
1082 {
1083 TALLOC_CTX *mem_ctx;
1084 DOM_SID group_sid;
1085 bool ret;
1086
1087 mem_ctx = talloc_new(NULL);
1088 if (mem_ctx == NULL) {
1089 DEBUG(0, ("talloc_new failed\n"));
1090 return False;
1091 }
1092
1093 ret = lookup_name(mem_ctx, groupname, LOOKUP_NAME_ALL,
1094 NULL, NULL, &group_sid, NULL);
1095 TALLOC_FREE(mem_ctx);
1096
1097 if (!ret) {
1098 DEBUG(10, ("lookup_name for (%s) failed.\n", groupname));
1099 return False;
1100 }
1101
1102 return user_in_group_sid(username, &group_sid);
1103 }
1104
1105 /***************************************************************************
1106 Make (and fill) a server_info struct from a 'struct passwd' by conversion
1107 to a struct samu
1108 ***************************************************************************/
1109
1110 NTSTATUS make_server_info_pw(auth_serversupplied_info **server_info,
1111 char *unix_username,
1112 struct passwd *pwd)
1113 {
1114 NTSTATUS status;
1115 struct samu *sampass = NULL;
1116 gid_t *gids;
1117 char *qualified_name = NULL;
1118 TALLOC_CTX *mem_ctx = NULL;
1119 DOM_SID u_sid;
1120 enum lsa_SidType type;
1121 auth_serversupplied_info *result;
1122
1123 if ( !(sampass = samu_new( NULL )) ) {
1124 return NT_STATUS_NO_MEMORY;
1125 }
1126
1127 status = samu_set_unix( sampass, pwd );
1128 if (!NT_STATUS_IS_OK(status)) {
1129 return status;
1130 }
1131
1132 result = make_server_info(NULL);
1133 if (result == NULL) {
1134 TALLOC_FREE(sampass);
1135 return NT_STATUS_NO_MEMORY;
1136 }
1137
1138 result->sam_account = sampass;
1139
1140 result->unix_name = talloc_strdup(result, unix_username);
1141 result->sanitized_username = sanitize_username(result, unix_username);
1142
1143 if ((result->unix_name == NULL)
1144 || (result->sanitized_username == NULL)) {
1145 TALLOC_FREE(sampass);
1146 TALLOC_FREE(result);
1147 return NT_STATUS_NO_MEMORY;
1148 }
1149
1150 result->utok.uid = pwd->pw_uid;
1151 result->utok.gid = pwd->pw_gid;
1152
1153 status = pdb_enum_group_memberships(result, sampass,
1154 &result->sids, &gids,
1155 &result->num_sids);
1156
1157 if (!NT_STATUS_IS_OK(status)) {
1158 DEBUG(10, ("pdb_enum_group_memberships failed: %s\n",
1159 nt_errstr(status)));
1160 TALLOC_FREE(result);
1161 return status;
1162 }
1163
1164 /*
1165 * The SID returned in server_info->sam_account is based
1166 * on our SAM sid even though for a pure UNIX account this should
1167 * not be the case as it doesn't really exist in the SAM db.
1168 * This causes lookups on "[in]valid users" to fail as they
1169 * will lookup this name as a "Unix User" SID to check against
1170 * the user token. Fix this by adding the "Unix User"\unix_username
1171 * SID to the sid array. The correct fix should probably be
1172 * changing the server_info->sam_account user SID to be a
1173 * S-1-22 Unix SID, but this might break old configs where
1174 * plaintext passwords were used with no SAM backend.
1175 */
1176
1177 mem_ctx = talloc_init("make_server_info_pw_tmp");
1178 if (!mem_ctx) {
1179 TALLOC_FREE(result);
1180 return NT_STATUS_NO_MEMORY;
1181 }
1182
1183 qualified_name = talloc_asprintf(mem_ctx, "%s\\%s",
1184 unix_users_domain_name(),
1185 unix_username );
1186 if (!qualified_name) {
1187 TALLOC_FREE(result);
1188 TALLOC_FREE(mem_ctx);
1189 return NT_STATUS_NO_MEMORY;
1190 }
1191
1192 if (!lookup_name(mem_ctx, qualified_name, LOOKUP_NAME_ALL,
1193 NULL, NULL,
1194 &u_sid, &type)) {
1195 TALLOC_FREE(result);
1196 TALLOC_FREE(mem_ctx);
1197 return NT_STATUS_NO_SUCH_USER;
1198 }
1199
1200 TALLOC_FREE(mem_ctx);
1201
1202 if (type != SID_NAME_USER) {
1203 TALLOC_FREE(result);
1204 return NT_STATUS_NO_SUCH_USER;
1205 }
1206
1207 status = add_sid_to_array_unique(result, &u_sid,
1208 &result->sids,
1209 &result->num_sids);
1210 if (!NT_STATUS_IS_OK(status)) {
1211 TALLOC_FREE(result);
1212 return status;
1213 }
1214
1215 /* For now we throw away the gids and convert via sid_to_gid
1216 * later. This needs fixing, but I'd like to get the code straight and
1217 * simple first. */
1218 TALLOC_FREE(gids);
1219
1220 *server_info = result;
1221
1222 return NT_STATUS_OK;
1223 }
1224
1225 /***************************************************************************
1226 Make (and fill) a user_info struct for a guest login.
1227 This *must* succeed for smbd to start. If there is no mapping entry for
1228 the guest gid, then create one.
1229 ***************************************************************************/
1230
1231 static NTSTATUS make_new_server_info_guest(auth_serversupplied_info **server_info)
1232 {
1233 NTSTATUS status;
1234 struct samu *sampass = NULL;
1235 DOM_SID guest_sid;
1236 bool ret;
1237 char zeros[16];
1238 fstring tmp;
1239
1240 if ( !(sampass = samu_new( NULL )) ) {
1241 return NT_STATUS_NO_MEMORY;
1242 }
1243
1244 sid_copy(&guest_sid, get_global_sam_sid());
1245 sid_append_rid(&guest_sid, DOMAIN_USER_RID_GUEST);
1246
1247 become_root();
1248 ret = pdb_getsampwsid(sampass, &guest_sid);
1249 unbecome_root();
1250
1251 if (!ret) {
1252 TALLOC_FREE(sampass);
1253 return NT_STATUS_NO_SUCH_USER;
1254 }
1255
1256 status = make_server_info_sam(server_info, sampass);
1257 if (!NT_STATUS_IS_OK(status)) {
1258 TALLOC_FREE(sampass);
1259 return status;
1260 }
1261
1262 (*server_info)->guest = True;
1263
1264 status = create_local_token(*server_info);
1265 if (!NT_STATUS_IS_OK(status)) {
1266 DEBUG(10, ("create_local_token failed: %s\n",
1267 nt_errstr(status)));
1268 return status;
1269 }
1270
1271 /* annoying, but the Guest really does have a session key, and it is
1272 all zeros! */
1273 ZERO_STRUCT(zeros);
1274 (*server_info)->user_session_key = data_blob(zeros, sizeof(zeros));
1275 (*server_info)->lm_session_key = data_blob(zeros, sizeof(zeros));
1276
1277 alpha_strcpy(tmp, pdb_get_username(sampass), ". _-$", sizeof(tmp));
1278 (*server_info)->sanitized_username = talloc_strdup(*server_info, tmp);
1279
1280 return NT_STATUS_OK;
1281 }
1282
1283 /****************************************************************************
1284 Fake a auth_serversupplied_info just from a username
1285 ****************************************************************************/
1286
1287 NTSTATUS make_serverinfo_from_username(TALLOC_CTX *mem_ctx,
1288 const char *username,
1289 bool is_guest,
1290 struct auth_serversupplied_info **presult)
1291 {
1292 struct auth_serversupplied_info *result;
1293 struct passwd *pwd;
1294 NTSTATUS status;
1295
1296 pwd = getpwnam_alloc(talloc_tos(), username);
1297 if (pwd == NULL) {
1298 return NT_STATUS_NO_SUCH_USER;
1299 }
1300
1301 status = make_server_info_pw(&result, pwd->pw_name, pwd);
1302
1303 TALLOC_FREE(pwd);
1304
1305 if (!NT_STATUS_IS_OK(status)) {
1306 return status;
1307 }
1308
1309 result->nss_token = true;
1310 result->guest = is_guest;
1311
1312 status = create_local_token(result);
1313
1314 if (!NT_STATUS_IS_OK(status)) {
1315 TALLOC_FREE(result);
1316 return status;
1317 }
1318
1319 *presult = result;
1320 return NT_STATUS_OK;
1321 }
1322
1323
1324 struct auth_serversupplied_info *copy_serverinfo(TALLOC_CTX *mem_ctx,
1325 const auth_serversupplied_info *src)
1326 {
1327 auth_serversupplied_info *dst;
1328
1329 dst = make_server_info(mem_ctx);
1330 if (dst == NULL) {
1331 return NULL;
1332 }
1333
1334 dst->guest = src->guest;
1335 dst->utok.uid = src->utok.uid;
1336 dst->utok.gid = src->utok.gid;
1337 dst->utok.ngroups = src->utok.ngroups;
1338 if (src->utok.ngroups != 0) {
1339 dst->utok.groups = (gid_t *)TALLOC_MEMDUP(
1340 dst, src->utok.groups,
1341 sizeof(gid_t)*dst->utok.ngroups);
1342 } else {
1343 dst->utok.groups = NULL;
1344 }
1345
1346 if (src->ptok) {
1347 dst->ptok = dup_nt_token(dst, src->ptok);
1348 if (!dst->ptok) {
1349 TALLOC_FREE(dst);
1350 return NULL;
1351 }
1352 }
1353
1354 dst->user_session_key = data_blob_talloc( dst, src->user_session_key.data,
1355 src->user_session_key.length);
1356
1357 dst->lm_session_key = data_blob_talloc(dst, src->lm_session_key.data,
1358 src->lm_session_key.length);
1359
1360 dst->sam_account = samu_new(NULL);
1361 if (!dst->sam_account) {
1362 TALLOC_FREE(dst);
1363 return NULL;
1364 }
1365
1366 if (!pdb_copy_sam_account(dst->sam_account, src->sam_account)) {
1367 TALLOC_FREE(dst);
1368 return NULL;
1369 }
1370
1371 dst->pam_handle = NULL;
1372 dst->unix_name = talloc_strdup(dst, src->unix_name);
1373 if (!dst->unix_name) {
1374 TALLOC_FREE(dst);
1375 return NULL;
1376 }
1377
1378 dst->sanitized_username = talloc_strdup(dst, src->sanitized_username);
1379 if (!dst->sanitized_username) {
1380 TALLOC_FREE(dst);
1381 return NULL;
1382 }
1383
1384 return dst;
1385 }
1386
1387 /*
1388 * Set a new session key. Used in the rpc server where we have to override the
1389 * SMB level session key with SystemLibraryDTC
1390 */
1391
1392 bool server_info_set_session_key(struct auth_serversupplied_info *info,
1393 DATA_BLOB session_key)
1394 {
1395 TALLOC_FREE(info->user_session_key.data);
1396
1397 info->user_session_key = data_blob_talloc(
1398 info, session_key.data, session_key.length);
1399
1400 return (info->user_session_key.data != NULL);
1401 }
1402
1403 static auth_serversupplied_info *guest_info = NULL;
1404
1405 bool init_guest_info(void)
1406 {
1407 if (guest_info != NULL)
1408 return True;
1409
1410 return NT_STATUS_IS_OK(make_new_server_info_guest(&guest_info));
1411 }
1412
1413 NTSTATUS make_server_info_guest(TALLOC_CTX *mem_ctx,
1414 auth_serversupplied_info **server_info)
1415 {
1416 *server_info = copy_serverinfo(mem_ctx, guest_info);
1417 return (*server_info != NULL) ? NT_STATUS_OK : NT_STATUS_NO_MEMORY;
1418 }
1419
1420 bool copy_current_user(struct current_user *dst, struct current_user *src)
1421 {
1422 gid_t *groups;
1423 NT_USER_TOKEN *nt_token;
1424
1425 groups = (gid_t *)memdup(src->ut.groups,
1426 sizeof(gid_t) * src->ut.ngroups);
1427 if ((src->ut.ngroups != 0) && (groups == NULL)) {
1428 return False;
1429 }
1430
1431 nt_token = dup_nt_token(NULL, src->nt_user_token);
1432 if (nt_token == NULL) {
1433 SAFE_FREE(groups);
1434 return False;
1435 }
1436
1437 dst->conn = src->conn;
1438 dst->vuid = src->vuid;
1439 dst->ut.uid = src->ut.uid;
1440 dst->ut.gid = src->ut.gid;
1441 dst->ut.ngroups = src->ut.ngroups;
1442 dst->ut.groups = groups;
1443 dst->nt_user_token = nt_token;
1444 return True;
1445 }
1446
1447 /***************************************************************************
1448 Purely internal function for make_server_info_info3
1449 Fill the sam account from getpwnam
1450 ***************************************************************************/
1451 static NTSTATUS fill_sam_account(TALLOC_CTX *mem_ctx,
1452 const char *domain,
1453 const char *username,
1454 char **found_username,
1455 uid_t *uid, gid_t *gid,
1456 struct samu *account,
1457 bool *username_was_mapped)
1458 {
1459 NTSTATUS nt_status;
1460 fstring dom_user, lower_username;
1461 fstring real_username;
1462 struct passwd *passwd;
1463
1464 fstrcpy( lower_username, username );
1465 strlower_m( lower_username );
1466
1467 fstr_sprintf(dom_user, "%s%c%s", domain, *lp_winbind_separator(),
1468 lower_username);
1469
1470 /* Get the passwd struct. Try to create the account is necessary. */
1471
1472 *username_was_mapped = map_username( dom_user );
1473
1474 if ( !(passwd = smb_getpwnam( NULL, dom_user, real_username, True )) )
1475 return NT_STATUS_NO_SUCH_USER;
1476
1477 *uid = passwd->pw_uid;
1478 *gid = passwd->pw_gid;
1479
1480 /* This is pointless -- there is no suport for differing
1481 unix and windows names. Make sure to always store the
1482 one we actually looked up and succeeded. Have I mentioned
1483 why I hate the 'winbind use default domain' parameter?
1484 --jerry */
1485
1486 *found_username = talloc_strdup( mem_ctx, real_username );
1487
1488 DEBUG(5,("fill_sam_account: located username was [%s]\n", *found_username));
1489
1490 nt_status = samu_set_unix( account, passwd );
1491
1492 TALLOC_FREE(passwd);
1493
1494 return nt_status;
1495 }
1496
1497 /****************************************************************************
1498 Wrapper to allow the getpwnam() call to strip the domain name and
1499 try again in case a local UNIX user is already there. Also run through
1500 the username if we fallback to the username only.
1501 ****************************************************************************/
1502
1503 struct passwd *smb_getpwnam( TALLOC_CTX *mem_ctx, char *domuser,
1504 fstring save_username, bool create )
1505 {
1506 struct passwd *pw = NULL;
1507 char *p;
1508 fstring username;
1509
1510 /* we only save a copy of the username it has been mangled
1511 by winbindd use default domain */
1512
1513 save_username[0] = '\0';
1514
1515 /* don't call map_username() here since it has to be done higher
1516 up the stack so we don't call it mutliple times */
1517
1518 fstrcpy( username, domuser );
1519
1520 p = strchr_m( username, *lp_winbind_separator() );
1521
1522 /* code for a DOMAIN\user string */
1523
1524 if ( p ) {
1525 fstring strip_username;
1526
1527 pw = Get_Pwnam_alloc( mem_ctx, domuser );
1528 if ( pw ) {
1529 /* make sure we get the case of the username correct */
1530 /* work around 'winbind use default domain = yes' */
1531
1532 if ( !strchr_m( pw->pw_name, *lp_winbind_separator() ) ) {
1533 char *domain;
1534
1535 /* split the domain and username into 2 strings */
1536 *p = '\0';
1537 domain = username;
1538
1539 fstr_sprintf(save_username, "%s%c%s", domain, *lp_winbind_separator(), pw->pw_name);
1540 }
1541 else
1542 fstrcpy( save_username, pw->pw_name );
1543
1544 /* whew -- done! */
1545 return pw;
1546 }
1547
1548 /* setup for lookup of just the username */
1549 /* remember that p and username are overlapping memory */
1550
1551 p++;
1552 fstrcpy( strip_username, p );
1553 fstrcpy( username, strip_username );
1554 }
1555
1556 /* just lookup a plain username */
1557
1558 pw = Get_Pwnam_alloc(mem_ctx, username);
1559
1560 /* Create local user if requested but only if winbindd
1561 is not running. We need to protect against cases
1562 where winbindd is failing and then prematurely
1563 creating users in /etc/passwd */
1564
1565 if ( !pw && create && !winbind_ping() ) {
1566 /* Don't add a machine account. */
1567 if (username[strlen(username)-1] == '$')
1568 return NULL;
1569
1570 _smb_create_user(NULL, username, NULL);
1571 pw = Get_Pwnam_alloc(mem_ctx, username);
1572 }
1573
1574 /* one last check for a valid passwd struct */
1575
1576 if ( pw )
1577 fstrcpy( save_username, pw->pw_name );
1578
1579 return pw;
1580 }
1581
1582 /***************************************************************************
1583 Make a server_info struct from the info3 returned by a domain logon
1584 ***************************************************************************/
1585
1586 NTSTATUS make_server_info_info3(TALLOC_CTX *mem_ctx,
1587 const char *sent_nt_username,
1588 const char *domain,
1589 auth_serversupplied_info **server_info,
1590 struct netr_SamInfo3 *info3)
1591 {
1592 char zeros[16];
1593
1594 NTSTATUS nt_status = NT_STATUS_OK;
1595 char *found_username = NULL;
1596 const char *nt_domain;
1597 const char *nt_username;
1598 struct samu *sam_account = NULL;
1599 DOM_SID user_sid;
1600 DOM_SID group_sid;
1601 bool username_was_mapped;
1602
1603 uid_t uid = (uid_t)-1;
1604 gid_t gid = (gid_t)-1;
1605
1606 auth_serversupplied_info *result;
1607
1608 /*
1609 Here is where we should check the list of
1610 trusted domains, and verify that the SID
1611 matches.
1612 */
1613
1614 sid_copy(&user_sid, info3->base.domain_sid);
1615 if (!sid_append_rid(&user_sid, info3->base.rid)) {
1616 return NT_STATUS_INVALID_PARAMETER;
1617 }
1618
1619 sid_copy(&group_sid, info3->base.domain_sid);
1620 if (!sid_append_rid(&group_sid, info3->base.primary_gid)) {
1621 return NT_STATUS_INVALID_PARAMETER;
1622 }
1623
1624 nt_username = talloc_strdup(mem_ctx, info3->base.account_name.string);
1625 if (!nt_username) {
1626 /* If the server didn't give us one, just use the one we sent
1627 * them */
1628 nt_username = sent_nt_username;
1629 }
1630
1631 nt_domain = talloc_strdup(mem_ctx, info3->base.domain.string);
1632 if (!nt_domain) {
1633 /* If the server didn't give us one, just use the one we sent
1634 * them */
1635 nt_domain = domain;
1636 }
1637
1638 /* try to fill the SAM account.. If getpwnam() fails, then try the
1639 add user script (2.2.x behavior).
1640
1641 We use the _unmapped_ username here in an attempt to provide
1642 consistent username mapping behavior between kerberos and NTLM[SSP]
1643 authentication in domain mode security. I.E. Username mapping
1644 should be applied to the fully qualified username
1645 (e.g. DOMAIN\user) and not just the login name. Yes this means we
1646 called map_username() unnecessarily in make_user_info_map() but
1647 that is how the current code is designed. Making the change here
1648 is the least disruptive place. -- jerry */
1649
1650 if ( !(sam_account = samu_new( NULL )) ) {
1651 return NT_STATUS_NO_MEMORY;
1652 }
1653
1654 /* this call will try to create the user if necessary */
1655
1656 nt_status = fill_sam_account(mem_ctx, nt_domain, sent_nt_username,
1657 &found_username, &uid, &gid, sam_account,
1658 &username_was_mapped);
1659
1660
1661 /* if we still don't have a valid unix account check for
1662 'map to guest = bad uid' */
1663
1664 if (!NT_STATUS_IS_OK(nt_status)) {
1665 TALLOC_FREE( sam_account );
1666 if ( lp_map_to_guest() == MAP_TO_GUEST_ON_BAD_UID ) {
1667 make_server_info_guest(NULL, server_info);
1668 return NT_STATUS_OK;
1669 }
1670 return nt_status;
1671 }
1672
1673 if (!pdb_set_nt_username(sam_account, nt_username, PDB_CHANGED)) {
1674 TALLOC_FREE(sam_account);
1675 return NT_STATUS_NO_MEMORY;
1676 }
1677
1678 if (!pdb_set_username(sam_account, nt_username, PDB_CHANGED)) {
1679 TALLOC_FREE(sam_account);
1680 return NT_STATUS_NO_MEMORY;
1681 }
1682
1683 if (!pdb_set_domain(sam_account, nt_domain, PDB_CHANGED)) {
1684 TALLOC_FREE(sam_account);
1685 return NT_STATUS_NO_MEMORY;
1686 }
1687
1688 if (!pdb_set_user_sid(sam_account, &user_sid, PDB_CHANGED)) {
1689 TALLOC_FREE(sam_account);
1690 return NT_STATUS_UNSUCCESSFUL;
1691 }
1692
1693 if (!pdb_set_group_sid(sam_account, &group_sid, PDB_CHANGED)) {
1694 TALLOC_FREE(sam_account);
1695 return NT_STATUS_UNSUCCESSFUL;
1696 }
1697
1698 if (!pdb_set_fullname(sam_account,
1699 info3->base.full_name.string,
1700 PDB_CHANGED)) {
1701 TALLOC_FREE(sam_account);
1702 return NT_STATUS_NO_MEMORY;
1703 }
1704
1705 if (!pdb_set_logon_script(sam_account,
1706 info3->base.logon_script.string,
1707 PDB_CHANGED)) {
1708 TALLOC_FREE(sam_account);
1709 return NT_STATUS_NO_MEMORY;
1710 }
1711
1712 if (!pdb_set_profile_path(sam_account,
1713 info3->base.profile_path.string,
1714 PDB_CHANGED)) {
1715 TALLOC_FREE(sam_account);
1716 return NT_STATUS_NO_MEMORY;
1717 }
1718
1719 if (!pdb_set_homedir(sam_account,
1720 info3->base.home_directory.string,
1721 PDB_CHANGED)) {
1722 TALLOC_FREE(sam_account);
1723 return NT_STATUS_NO_MEMORY;
1724 }
1725
1726 if (!pdb_set_dir_drive(sam_account,
1727 info3->base.home_drive.string,
1728 PDB_CHANGED)) {
1729 TALLOC_FREE(sam_account);
1730 return NT_STATUS_NO_MEMORY;
1731 }
1732
1733 if (!pdb_set_acct_ctrl(sam_account, info3->base.acct_flags, PDB_CHANGED)) {
1734 TALLOC_FREE(sam_account);
1735 return NT_STATUS_NO_MEMORY;
1736 }
1737
1738 if (!pdb_set_pass_last_set_time(
1739 sam_account,
1740 nt_time_to_unix(info3->base.last_password_change),
1741 PDB_CHANGED)) {
1742 TALLOC_FREE(sam_account);
1743 return NT_STATUS_NO_MEMORY;
1744 }
1745
1746 if (!pdb_set_pass_can_change_time(
1747 sam_account,
1748 nt_time_to_unix(info3->base.allow_password_change),
1749 PDB_CHANGED)) {
1750 TALLOC_FREE(sam_account);
1751 return NT_STATUS_NO_MEMORY;
1752 }
1753
1754 if (!pdb_set_pass_must_change_time(
1755 sam_account,
1756 nt_time_to_unix(info3->base.force_password_change),
1757 PDB_CHANGED)) {
1758 TALLOC_FREE(sam_account);
1759 return NT_STATUS_NO_MEMORY;
1760 }
1761
1762 result = make_server_info(NULL);
1763 if (result == NULL) {
1764 DEBUG(4, ("make_server_info failed!\n"));
1765 TALLOC_FREE(sam_account);
1766 return NT_STATUS_NO_MEMORY;
1767 }
1768
1769 /* save this here to _net_sam_logon() doesn't fail (it assumes a
1770 valid struct samu) */
1771
1772 result->sam_account = sam_account;
1773 result->unix_name = talloc_strdup(result, found_username);
1774
1775 result->sanitized_username = sanitize_username(result,
1776 result->unix_name);
1777 if (result->sanitized_username == NULL) {
1778 TALLOC_FREE(result);
1779 return NT_STATUS_NO_MEMORY;
1780 }
1781
1782 /* Fill in the unix info we found on the way */
1783
1784 result->utok.uid = uid;
1785 result->utok.gid = gid;
1786
1787 /* Create a 'combined' list of all SIDs we might want in the SD */
1788
1789 result->num_sids = 0;
1790 result->sids = NULL;
1791
1792 nt_status = sid_array_from_info3(result, info3,
1793 &result->sids,
1794 &result->num_sids,
1795 false, false);
1796 if (!NT_STATUS_IS_OK(nt_status)) {
1797 TALLOC_FREE(result);
1798 return nt_status;
1799 }
1800
1801 /* Ensure the primary group sid is at position 0. */
1802 sort_sid_array_for_smbd(result, &group_sid);
1803
1804 result->login_server = talloc_strdup(result,
1805 info3->base.logon_server.string);
1806
1807 /* ensure we are never given NULL session keys */
1808
1809 ZERO_STRUCT(zeros);
1810
1811 if (memcmp(info3->base.key.key, zeros, sizeof(zeros)) == 0) {
1812 result->user_session_key = data_blob_null;
1813 } else {
1814 result->user_session_key = data_blob_talloc(
1815 result, info3->base.key.key,
1816 sizeof(info3->base.key.key));
1817 }
1818
1819 if (memcmp(info3->base.LMSessKey.key, zeros, 8) == 0) {
1820 result->lm_session_key = data_blob_null;
1821 } else {
1822 result->lm_session_key = data_blob_talloc(
1823 result, info3->base.LMSessKey.key,
1824 sizeof(info3->base.LMSessKey.key));
1825 }
1826
1827 result->nss_token |= username_was_mapped;
1828
1829 *server_info = result;
1830
1831 return NT_STATUS_OK;
1832 }
1833
1834 /*****************************************************************************
1835 Make a server_info struct from the wbcAuthUserInfo returned by a domain logon
1836 ******************************************************************************/
1837
1838 NTSTATUS make_server_info_wbcAuthUserInfo(TALLOC_CTX *mem_ctx,
1839 const char *sent_nt_username,
1840 const char *domain,
1841 const struct wbcAuthUserInfo *info,
1842 auth_serversupplied_info **server_info)
1843 {
1844 char zeros[16];
1845
1846 NTSTATUS nt_status = NT_STATUS_OK;
1847 char *found_username = NULL;
1848 const char *nt_domain;
1849 const char *nt_username;
1850 struct samu *sam_account = NULL;
1851 DOM_SID user_sid;
1852 DOM_SID group_sid;
1853 bool username_was_mapped;
1854 uint32_t i;
1855
1856 uid_t uid = (uid_t)-1;
1857 gid_t gid = (gid_t)-1;
1858
1859 auth_serversupplied_info *result;
1860
1861 result = make_server_info(NULL);
1862 if (result == NULL) {
1863 DEBUG(4, ("make_server_info failed!\n"));
1864 return NT_STATUS_NO_MEMORY;
1865 }
1866
1867 /*
1868 Here is where we should check the list of
1869 trusted domains, and verify that the SID
1870 matches.
1871 */
1872
1873 memcpy(&user_sid, &info->sids[0].sid, sizeof(user_sid));
1874 memcpy(&group_sid, &info->sids[1].sid, sizeof(group_sid));
1875
1876 if (info->account_name) {
1877 nt_username = talloc_strdup(result, info->account_name);
1878 } else {
1879 /* If the server didn't give us one, just use the one we sent
1880 * them */
1881 nt_username = talloc_strdup(result, sent_nt_username);
1882 }
1883 if (!nt_username) {
1884 TALLOC_FREE(result);
1885 return NT_STATUS_NO_MEMORY;
1886 }
1887
1888 if (info->domain_name) {
1889 nt_domain = talloc_strdup(result, info->domain_name);
1890 } else {
1891 /* If the server didn't give us one, just use the one we sent
1892 * them */
1893 nt_domain = talloc_strdup(result, domain);
1894 }
1895 if (!nt_domain) {
1896 TALLOC_FREE(result);
1897 return NT_STATUS_NO_MEMORY;
1898 }
1899
1900 /* try to fill the SAM account.. If getpwnam() fails, then try the
1901 add user script (2.2.x behavior).
1902
1903 We use the _unmapped_ username here in an attempt to provide
1904 consistent username mapping behavior between kerberos and NTLM[SSP]
1905 authentication in domain mode security. I.E. Username mapping
1906 should be applied to the fully qualified username
1907 (e.g. DOMAIN\user) and not just the login name. Yes this means we
1908 called map_username() unnecessarily in make_user_info_map() but
1909 that is how the current code is designed. Making the change here
1910 is the least disruptive place. -- jerry */
1911
1912 if ( !(sam_account = samu_new( result )) ) {
1913 TALLOC_FREE(result);
1914 return NT_STATUS_NO_MEMORY;
1915 }
1916
1917 /* this call will try to create the user if necessary */
1918
1919 nt_status = fill_sam_account(result, nt_domain, sent_nt_username,
1920 &found_username, &uid, &gid, sam_account,
1921 &username_was_mapped);
1922
1923 /* if we still don't have a valid unix account check for
1924 'map to guest = bad uid' */
1925
1926 if (!NT_STATUS_IS_OK(nt_status)) {
1927 TALLOC_FREE( result );
1928 if ( lp_map_to_guest() == MAP_TO_GUEST_ON_BAD_UID ) {
1929 make_server_info_guest(NULL, server_info);
1930 return NT_STATUS_OK;
1931 }
1932 return nt_status;
1933 }
1934
1935 if (!pdb_set_nt_username(sam_account, nt_username, PDB_CHANGED)) {
1936 TALLOC_FREE(result);
1937 return NT_STATUS_NO_MEMORY;
1938 }
1939
1940 if (!pdb_set_username(sam_account, nt_username, PDB_CHANGED)) {
1941 TALLOC_FREE(result);
1942 return NT_STATUS_NO_MEMORY;
1943 }
1944
1945 if (!pdb_set_domain(sam_account, nt_domain, PDB_CHANGED)) {
1946 TALLOC_FREE(result);
1947 return NT_STATUS_NO_MEMORY;
1948 }
1949
1950 if (!pdb_set_user_sid(sam_account, &user_sid, PDB_CHANGED)) {
1951 TALLOC_FREE(result);
1952 return NT_STATUS_UNSUCCESSFUL;
1953 }
1954
1955 if (!pdb_set_group_sid(sam_account, &group_sid, PDB_CHANGED)) {
1956 TALLOC_FREE(result);
1957 return NT_STATUS_UNSUCCESSFUL;
1958 }
1959
1960 if (!pdb_set_fullname(sam_account, info->full_name, PDB_CHANGED)) {
1961 TALLOC_FREE(result);
1962 return NT_STATUS_NO_MEMORY;
1963 }
1964
1965 if (!pdb_set_logon_script(sam_account, info->logon_script, PDB_CHANGED)) {
1966 TALLOC_FREE(result);
1967 return NT_STATUS_NO_MEMORY;
1968 }
1969
1970 if (!pdb_set_profile_path(sam_account, info->profile_path, PDB_CHANGED)) {
1971 TALLOC_FREE(result);
1972 return NT_STATUS_NO_MEMORY;
1973 }
1974
1975 if (!pdb_set_homedir(sam_account, info->home_directory, PDB_CHANGED)) {
1976 TALLOC_FREE(result);
1977 return NT_STATUS_NO_MEMORY;
1978 }
1979
1980 if (!pdb_set_dir_drive(sam_account, info->home_drive, PDB_CHANGED)) {
1981 TALLOC_FREE(result);
1982 return NT_STATUS_NO_MEMORY;
1983 }
1984
1985 if (!pdb_set_acct_ctrl(sam_account, info->acct_flags, PDB_CHANGED)) {
1986 TALLOC_FREE(result);
1987 return NT_STATUS_NO_MEMORY;
1988 }
1989
1990 if (!pdb_set_pass_last_set_time(
1991 sam_account,
1992 nt_time_to_unix(info->pass_last_set_time),
1993 PDB_CHANGED)) {
1994 TALLOC_FREE(result);
1995 return NT_STATUS_NO_MEMORY;
1996 }
1997
1998 if (!pdb_set_pass_can_change_time(
1999 sam_account,
2000 nt_time_to_unix(info->pass_can_change_time),
2001 PDB_CHANGED)) {
2002 TALLOC_FREE(result);
2003 return NT_STATUS_NO_MEMORY;
2004 }
2005
2006 if (!pdb_set_pass_must_change_time(
2007 sam_account,
2008 nt_time_to_unix(info->pass_must_change_time),
2009 PDB_CHANGED)) {
2010 TALLOC_FREE(result);
2011 return NT_STATUS_NO_MEMORY;
2012 }
2013
2014 /* save this here to _net_sam_logon() doesn't fail (it assumes a
2015 valid struct samu) */
2016
2017 result->sam_account = sam_account;
2018 result->unix_name = talloc_strdup(result, found_username);
2019
2020 result->sanitized_username = sanitize_username(result,
2021 result->unix_name);
2022 result->login_server = talloc_strdup(result, info->logon_server);
2023
2024 if ((result->unix_name == NULL)
2025 || (result->sanitized_username == NULL)
2026 || (result->login_server == NULL)) {
2027 TALLOC_FREE(result);
2028 return NT_STATUS_NO_MEMORY;
2029 }
2030
2031 /* Fill in the unix info we found on the way */
2032
2033 result->utok.uid = uid;
2034 result->utok.gid = gid;
2035
2036 /* Create a 'combined' list of all SIDs we might want in the SD */
2037
2038 result->num_sids = info->num_sids - 2;
2039 result->sids = talloc_array(result, DOM_SID, result->num_sids);
2040 if (result->sids == NULL) {
2041 TALLOC_FREE(result);
2042 return NT_STATUS_NO_MEMORY;
2043 }
2044
2045 for (i=0; i < result->num_sids; i++) {
2046 memcpy(&result->sids[i], &info->sids[i+2].sid, sizeof(result->sids[i]));
2047 }
2048
2049 /* Ensure the primary group sid is at position 0. */
2050 sort_sid_array_for_smbd(result, &group_sid);
2051
2052 /* ensure we are never given NULL session keys */
2053
2054 ZERO_STRUCT(zeros);
2055
2056 if (memcmp(info->user_session_key, zeros, sizeof(zeros)) == 0) {
2057 result->user_session_key = data_blob_null;
2058 } else {
2059 result->user_session_key = data_blob_talloc(
2060 result, info->user_session_key,
2061 sizeof(info->user_session_key));
2062 }
2063
2064 if (memcmp(info->lm_session_key, zeros, 8) == 0) {
2065 result->lm_session_key = data_blob_null;
2066 } else {
2067 result->lm_session_key = data_blob_talloc(
2068 result, info->lm_session_key,
2069 sizeof(info->lm_session_key));
2070 }
2071
2072 result->nss_token |= username_was_mapped;
2073
2074 *server_info = result;
2075
2076 return NT_STATUS_OK;
2077 }
2078
2079 /***************************************************************************
2080 Free a user_info struct
2081 ***************************************************************************/
2082
2083 void free_user_info(auth_usersupplied_info **user_info)
2084 {
2085 DEBUG(5,("attempting to free (and zero) a user_info structure\n"));
2086 if (*user_info != NULL) {
2087 if ((*user_info)->smb_name) {
2088 DEBUG(10,("structure was created for %s\n",
2089 (*user_info)->smb_name));
2090 }
2091 SAFE_FREE((*user_info)->smb_name);
2092 SAFE_FREE((*user_info)->internal_username);
2093 SAFE_FREE((*user_info)->client_domain);
2094 SAFE_FREE((*user_info)->domain);
2095 SAFE_FREE((*user_info)->wksta_name);
2096 data_blob_free(&(*user_info)->lm_resp);
2097 data_blob_free(&(*user_info)->nt_resp);
2098 data_blob_clear_free(&(*user_info)->lm_interactive_pwd);
2099 data_blob_clear_free(&(*user_info)->nt_interactive_pwd);
2100 data_blob_clear_free(&(*user_info)->plaintext_password);
2101 ZERO_STRUCT(**user_info);
2102 }
2103 SAFE_FREE(*user_info);
2104 }
2105
2106 /***************************************************************************
2107 Make an auth_methods struct
2108 ***************************************************************************/
2109
2110 bool make_auth_methods(struct auth_context *auth_context, auth_methods **auth_method)
2111 {
2112 if (!auth_context) {
2113 smb_panic("no auth_context supplied to "
2114 "make_auth_methods()!\n");
2115 }
2116
2117 if (!auth_method) {
2118 smb_panic("make_auth_methods: pointer to auth_method pointer "
2119 "is NULL!\n");
2120 }
2121
2122 *auth_method = TALLOC_P(auth_context->mem_ctx, auth_methods);
2123 if (!*auth_method) {
2124 DEBUG(0,("make_auth_method: malloc failed!\n"));
2125 return False;
2126 }
2127 ZERO_STRUCTP(*auth_method);
2128
2129 return True;
2130 }
2131
2132 /**
2133 * Verify whether or not given domain is trusted.
2134 *
2135 * @param domain_name name of the domain to be verified
2136 * @return true if domain is one of the trusted once or
2137 * false if otherwise
2138 **/
2139
2140 bool is_trusted_domain(const char* dom_name)
2141 {
2142 DOM_SID trustdom_sid;
2143 bool ret;
2144
2145 /* no trusted domains for a standalone server */
2146
2147 if ( lp_server_role() == ROLE_STANDALONE )
2148 return False;
2149
2150 /* if we are a DC, then check for a direct trust relationships */
2151
2152 if ( IS_DC ) {
2153 become_root();
2154 DEBUG (5,("is_trusted_domain: Checking for domain trust with "
2155 "[%s]\n", dom_name ));
2156 ret = pdb_get_trusteddom_pw(dom_name, NULL, NULL, NULL);
2157 unbecome_root();
2158 if (ret)
2159 return True;
2160 }
2161 else {
2162 wbcErr result;
2163
2164 /* If winbind is around, ask it */
2165
2166 result = wb_is_trusted_domain(dom_name);
2167
2168 if (result == WBC_ERR_SUCCESS) {
2169 return True;
2170 }
2171
2172 if (result == WBC_ERR_DOMAIN_NOT_FOUND) {
2173 /* winbind could not find the domain */
2174 return False;
2175 }
2176
2177 /* The only other possible result is that winbind is not up
2178 and running. We need to update the trustdom_cache
2179 ourselves */
2180
2181 update_trustdom_cache();
2182 }
2183
2184 /* now the trustdom cache should be available a DC could still
2185 * have a transitive trust so fall back to the cache of trusted
2186 * domains (like a domain member would use */
2187
2188 if ( trustdom_cache_fetch(dom_name, &trustdom_sid) ) {
2189 return True;
2190 }
2191
2192 return False;
2193 }
2194
WIP