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[GLUE] Rsync SAMBA_3_0 SVN r25598 in order to create the v3-0-test branch.
[Samba.git] / source / auth / auth_util.c
blob1c53447550054b9c24048e0414619b167a9dd1c5
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 2 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, write to the Free Software
22 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
23 */
24
25 #include "includes.h"
26
27 #undef DBGC_CLASS
28 #define DBGC_CLASS DBGC_AUTH
29
30 static struct nt_user_token *create_local_nt_token(TALLOC_CTX *mem_ctx,
31 const DOM_SID *user_sid,
32 BOOL is_guest,
33 int num_groupsids,
34 const DOM_SID *groupsids);
35
36 /****************************************************************************
37 Create a UNIX user on demand.
38 ****************************************************************************/
39
40 static int smb_create_user(const char *domain, const char *unix_username, const char *homedir)
41 {
42 pstring add_script;
43 int ret;
44
45 pstrcpy(add_script, lp_adduser_script());
46 if (! *add_script)
47 return -1;
48 all_string_sub(add_script, "%u", unix_username, sizeof(pstring));
49 if (domain)
50 all_string_sub(add_script, "%D", domain, sizeof(pstring));
51 if (homedir)
52 all_string_sub(add_script, "%H", homedir, sizeof(pstring));
53 ret = smbrun(add_script,NULL);
54 flush_pwnam_cache();
55 DEBUG(ret ? 0 : 3,("smb_create_user: Running the command `%s' gave %d\n",add_script,ret));
56 return ret;
57 }
58
59 /****************************************************************************
60 Create an auth_usersupplied_data structure
61 ****************************************************************************/
62
63 static NTSTATUS make_user_info(auth_usersupplied_info **user_info,
64 const char *smb_name,
65 const char *internal_username,
66 const char *client_domain,
67 const char *domain,
68 const char *wksta_name,
69 DATA_BLOB *lm_pwd, DATA_BLOB *nt_pwd,
70 DATA_BLOB *lm_interactive_pwd, DATA_BLOB *nt_interactive_pwd,
71 DATA_BLOB *plaintext,
72 BOOL encrypted)
73 {
74
75 DEBUG(5,("attempting to make a user_info for %s (%s)\n", internal_username, smb_name));
76
77 *user_info = SMB_MALLOC_P(auth_usersupplied_info);
78 if (*user_info == NULL) {
79 DEBUG(0,("malloc failed for user_info (size %lu)\n", (unsigned long)sizeof(*user_info)));
80 return NT_STATUS_NO_MEMORY;
81 }
82
83 ZERO_STRUCTP(*user_info);
84
85 DEBUG(5,("making strings for %s's user_info struct\n", internal_username));
86
87 (*user_info)->smb_name = SMB_STRDUP(smb_name);
88 if ((*user_info)->smb_name == NULL) {
89 free_user_info(user_info);
90 return NT_STATUS_NO_MEMORY;
91 }
92
93 (*user_info)->internal_username = SMB_STRDUP(internal_username);
94 if ((*user_info)->internal_username == NULL) {
95 free_user_info(user_info);
96 return NT_STATUS_NO_MEMORY;
97 }
98
99 (*user_info)->domain = SMB_STRDUP(domain);
100 if ((*user_info)->domain == NULL) {
101 free_user_info(user_info);
102 return NT_STATUS_NO_MEMORY;
103 }
104
105 (*user_info)->client_domain = SMB_STRDUP(client_domain);
106 if ((*user_info)->client_domain == NULL) {
107 free_user_info(user_info);
108 return NT_STATUS_NO_MEMORY;
109 }
110
111 (*user_info)->wksta_name = SMB_STRDUP(wksta_name);
112 if ((*user_info)->wksta_name == NULL) {
113 free_user_info(user_info);
114 return NT_STATUS_NO_MEMORY;
115 }
116
117 DEBUG(5,("making blobs for %s's user_info struct\n", internal_username));
118
119 if (lm_pwd)
120 (*user_info)->lm_resp = data_blob(lm_pwd->data, lm_pwd->length);
121 if (nt_pwd)
122 (*user_info)->nt_resp = data_blob(nt_pwd->data, nt_pwd->length);
123 if (lm_interactive_pwd)
124 (*user_info)->lm_interactive_pwd = data_blob(lm_interactive_pwd->data, lm_interactive_pwd->length);
125 if (nt_interactive_pwd)
126 (*user_info)->nt_interactive_pwd = data_blob(nt_interactive_pwd->data, nt_interactive_pwd->length);
127
128 if (plaintext)
129 (*user_info)->plaintext_password = data_blob(plaintext->data, plaintext->length);
130
131 (*user_info)->encrypted = encrypted;
132
133 (*user_info)->logon_parameters = 0;
134
135 DEBUG(10,("made an %sencrypted user_info for %s (%s)\n", encrypted ? "":"un" , internal_username, smb_name));
136
137 return NT_STATUS_OK;
138 }
139
140 /****************************************************************************
141 Create an auth_usersupplied_data structure after appropriate mapping.
142 ****************************************************************************/
143
144 NTSTATUS make_user_info_map(auth_usersupplied_info **user_info,
145 const char *smb_name,
146 const char *client_domain,
147 const char *wksta_name,
148 DATA_BLOB *lm_pwd, DATA_BLOB *nt_pwd,
149 DATA_BLOB *lm_interactive_pwd, DATA_BLOB *nt_interactive_pwd,
150 DATA_BLOB *plaintext,
151 BOOL encrypted)
152 {
153 const char *domain;
154 NTSTATUS result;
155 BOOL was_mapped;
156 fstring internal_username;
157 fstrcpy(internal_username, smb_name);
158 was_mapped = map_username(internal_username);
159
160 DEBUG(5, ("make_user_info_map: Mapping user [%s]\\[%s] from workstation [%s]\n",
161 client_domain, smb_name, wksta_name));
162
163 /* don't allow "" as a domain, fixes a Win9X bug
164 where it doens't supply a domain for logon script
165 'net use' commands. */
166
167 if ( *client_domain )
168 domain = client_domain;
169 else
170 domain = lp_workgroup();
171
172 /* do what win2k does. Always map unknown domains to our own
173 and let the "passdb backend" handle unknown users. */
174
175 if ( !is_trusted_domain(domain) && !strequal(domain, get_global_sam_name()) )
176 domain = my_sam_name();
177
178 /* we know that it is a trusted domain (and we are allowing them) or it is our domain */
179
180 result = make_user_info(user_info, smb_name, internal_username,
181 client_domain, domain, wksta_name,
182 lm_pwd, nt_pwd,
183 lm_interactive_pwd, nt_interactive_pwd,
184 plaintext, encrypted);
185 if (NT_STATUS_IS_OK(result)) {
186 (*user_info)->was_mapped = was_mapped;
187 }
188 return result;
189 }
190
191 /****************************************************************************
192 Create an auth_usersupplied_data, making the DATA_BLOBs here.
193 Decrypt and encrypt the passwords.
194 ****************************************************************************/
195
196 BOOL make_user_info_netlogon_network(auth_usersupplied_info **user_info,
197 const char *smb_name,
198 const char *client_domain,
199 const char *wksta_name,
200 uint32 logon_parameters,
201 const uchar *lm_network_pwd,
202 int lm_pwd_len,
203 const uchar *nt_network_pwd,
204 int nt_pwd_len)
205 {
206 BOOL ret;
207 NTSTATUS status;
208 DATA_BLOB lm_blob = data_blob(lm_network_pwd, lm_pwd_len);
209 DATA_BLOB nt_blob = data_blob(nt_network_pwd, nt_pwd_len);
210
211 status = make_user_info_map(user_info,
212 smb_name, client_domain,
213 wksta_name,
214 lm_pwd_len ? &lm_blob : NULL,
215 nt_pwd_len ? &nt_blob : NULL,
216 NULL, NULL, NULL,
217 True);
218
219 if (NT_STATUS_IS_OK(status)) {
220 (*user_info)->logon_parameters = logon_parameters;
221 }
222 ret = NT_STATUS_IS_OK(status) ? True : False;
223
224 data_blob_free(&lm_blob);
225 data_blob_free(&nt_blob);
226 return ret;
227 }
228
229 /****************************************************************************
230 Create an auth_usersupplied_data, making the DATA_BLOBs here.
231 Decrypt and encrypt the passwords.
232 ****************************************************************************/
233
234 BOOL make_user_info_netlogon_interactive(auth_usersupplied_info **user_info,
235 const char *smb_name,
236 const char *client_domain,
237 const char *wksta_name,
238 uint32 logon_parameters,
239 const uchar chal[8],
240 const uchar lm_interactive_pwd[16],
241 const uchar nt_interactive_pwd[16],
242 const uchar *dc_sess_key)
243 {
244 char lm_pwd[16];
245 char nt_pwd[16];
246 unsigned char local_lm_response[24];
247 unsigned char local_nt_response[24];
248 unsigned char key[16];
249
250 ZERO_STRUCT(key);
251 memcpy(key, dc_sess_key, 8);
252
253 if (lm_interactive_pwd)
254 memcpy(lm_pwd, lm_interactive_pwd, sizeof(lm_pwd));
255
256 if (nt_interactive_pwd)
257 memcpy(nt_pwd, nt_interactive_pwd, sizeof(nt_pwd));
258
259 #ifdef DEBUG_PASSWORD
260 DEBUG(100,("key:"));
261 dump_data(100, (char *)key, sizeof(key));
262
263 DEBUG(100,("lm owf password:"));
264 dump_data(100, lm_pwd, sizeof(lm_pwd));
265
266 DEBUG(100,("nt owf password:"));
267 dump_data(100, nt_pwd, sizeof(nt_pwd));
268 #endif
269
270 if (lm_interactive_pwd)
271 SamOEMhash((uchar *)lm_pwd, key, sizeof(lm_pwd));
272
273 if (nt_interactive_pwd)
274 SamOEMhash((uchar *)nt_pwd, key, sizeof(nt_pwd));
275
276 #ifdef DEBUG_PASSWORD
277 DEBUG(100,("decrypt of lm owf password:"));
278 dump_data(100, lm_pwd, sizeof(lm_pwd));
279
280 DEBUG(100,("decrypt of nt owf password:"));
281 dump_data(100, nt_pwd, sizeof(nt_pwd));
282 #endif
283
284 if (lm_interactive_pwd)
285 SMBOWFencrypt((const unsigned char *)lm_pwd, chal,
286 local_lm_response);
287
288 if (nt_interactive_pwd)
289 SMBOWFencrypt((const unsigned char *)nt_pwd, chal,
290 local_nt_response);
291
292 /* Password info paranoia */
293 ZERO_STRUCT(key);
294
295 {
296 BOOL ret;
297 NTSTATUS nt_status;
298 DATA_BLOB local_lm_blob;
299 DATA_BLOB local_nt_blob;
300
301 DATA_BLOB lm_interactive_blob;
302 DATA_BLOB nt_interactive_blob;
303
304 if (lm_interactive_pwd) {
305 local_lm_blob = data_blob(local_lm_response,
306 sizeof(local_lm_response));
307 lm_interactive_blob = data_blob(lm_pwd,
308 sizeof(lm_pwd));
309 ZERO_STRUCT(lm_pwd);
310 }
311
312 if (nt_interactive_pwd) {
313 local_nt_blob = data_blob(local_nt_response,
314 sizeof(local_nt_response));
315 nt_interactive_blob = data_blob(nt_pwd,
316 sizeof(nt_pwd));
317 ZERO_STRUCT(nt_pwd);
318 }
319
320 nt_status = make_user_info_map(
321 user_info,
322 smb_name, client_domain, wksta_name,
323 lm_interactive_pwd ? &local_lm_blob : NULL,
324 nt_interactive_pwd ? &local_nt_blob : NULL,
325 lm_interactive_pwd ? &lm_interactive_blob : NULL,
326 nt_interactive_pwd ? &nt_interactive_blob : NULL,
327 NULL, True);
328
329 if (NT_STATUS_IS_OK(nt_status)) {
330 (*user_info)->logon_parameters = logon_parameters;
331 }
332
333 ret = NT_STATUS_IS_OK(nt_status) ? True : False;
334 data_blob_free(&local_lm_blob);
335 data_blob_free(&local_nt_blob);
336 data_blob_free(&lm_interactive_blob);
337 data_blob_free(&nt_interactive_blob);
338 return ret;
339 }
340 }
341
342
343 /****************************************************************************
344 Create an auth_usersupplied_data structure
345 ****************************************************************************/
346
347 BOOL make_user_info_for_reply(auth_usersupplied_info **user_info,
348 const char *smb_name,
349 const char *client_domain,
350 const uint8 chal[8],
351 DATA_BLOB plaintext_password)
352 {
353
354 DATA_BLOB local_lm_blob;
355 DATA_BLOB local_nt_blob;
356 NTSTATUS ret = NT_STATUS_UNSUCCESSFUL;
357
358 /*
359 * Not encrypted - do so.
360 */
361
362 DEBUG(5,("make_user_info_for_reply: User passwords not in encrypted "
363 "format.\n"));
364
365 if (plaintext_password.data) {
366 unsigned char local_lm_response[24];
367
368 #ifdef DEBUG_PASSWORD
369 DEBUG(10,("Unencrypted password (len %d):\n",
370 (int)plaintext_password.length));
371 dump_data(100, (const char *)plaintext_password.data,
372 plaintext_password.length);
373 #endif
374
375 SMBencrypt( (const char *)plaintext_password.data,
376 (const uchar*)chal, local_lm_response);
377 local_lm_blob = data_blob(local_lm_response, 24);
378
379 /* We can't do an NT hash here, as the password needs to be
380 case insensitive */
381 local_nt_blob = data_blob(NULL, 0);
382
383 } else {
384 local_lm_blob = data_blob(NULL, 0);
385 local_nt_blob = data_blob(NULL, 0);
386 }
387
388 ret = make_user_info_map(
389 user_info, smb_name, client_domain,
390 get_remote_machine_name(),
391 local_lm_blob.data ? &local_lm_blob : NULL,
392 local_nt_blob.data ? &local_nt_blob : NULL,
393 NULL, NULL,
394 plaintext_password.data ? &plaintext_password : NULL,
395 False);
396
397 data_blob_free(&local_lm_blob);
398 return NT_STATUS_IS_OK(ret) ? True : False;
399 }
400
401 /****************************************************************************
402 Create an auth_usersupplied_data structure
403 ****************************************************************************/
404
405 NTSTATUS make_user_info_for_reply_enc(auth_usersupplied_info **user_info,
406 const char *smb_name,
407 const char *client_domain,
408 DATA_BLOB lm_resp, DATA_BLOB nt_resp)
409 {
410 return make_user_info_map(user_info, smb_name,
411 client_domain,
412 get_remote_machine_name(),
413 lm_resp.data ? &lm_resp : NULL,
414 nt_resp.data ? &nt_resp : NULL,
415 NULL, NULL, NULL,
416 True);
417 }
418
419 /****************************************************************************
420 Create a guest user_info blob, for anonymous authenticaion.
421 ****************************************************************************/
422
423 BOOL make_user_info_guest(auth_usersupplied_info **user_info)
424 {
425 NTSTATUS nt_status;
426
427 nt_status = make_user_info(user_info,
428 "","",
429 "","",
430 "",
431 NULL, NULL,
432 NULL, NULL,
433 NULL,
434 True);
435
436 return NT_STATUS_IS_OK(nt_status) ? True : False;
437 }
438
439 /****************************************************************************
440 prints a NT_USER_TOKEN to debug output.
441 ****************************************************************************/
442
443 void debug_nt_user_token(int dbg_class, int dbg_lev, NT_USER_TOKEN *token)
444 {
445 size_t i;
446
447 if (!token) {
448 DEBUGC(dbg_class, dbg_lev, ("NT user token: (NULL)\n"));
449 return;
450 }
451
452 DEBUGC(dbg_class, dbg_lev,
453 ("NT user token of user %s\n",
454 sid_string_static(&token->user_sids[0]) ));
455 DEBUGADDC(dbg_class, dbg_lev,
456 ("contains %lu SIDs\n", (unsigned long)token->num_sids));
457 for (i = 0; i < token->num_sids; i++)
458 DEBUGADDC(dbg_class, dbg_lev,
459 ("SID[%3lu]: %s\n", (unsigned long)i,
460 sid_string_static(&token->user_sids[i])));
461
462 dump_se_priv( dbg_class, dbg_lev, &token->privileges );
463 }
464
465 /****************************************************************************
466 prints a UNIX 'token' to debug output.
467 ****************************************************************************/
468
469 void debug_unix_user_token(int dbg_class, int dbg_lev, uid_t uid, gid_t gid,
470 int n_groups, gid_t *groups)
471 {
472 int i;
473 DEBUGC(dbg_class, dbg_lev,
474 ("UNIX token of user %ld\n", (long int)uid));
475
476 DEBUGADDC(dbg_class, dbg_lev,
477 ("Primary group is %ld and contains %i supplementary "
478 "groups\n", (long int)gid, n_groups));
479 for (i = 0; i < n_groups; i++)
480 DEBUGADDC(dbg_class, dbg_lev, ("Group[%3i]: %ld\n", i,
481 (long int)groups[i]));
482 }
483
484 /******************************************************************************
485 Create a token for the root user to be used internally by smbd.
486 This is similar to running under the context of the LOCAL_SYSTEM account
487 in Windows. This is a read-only token. Do not modify it or free() it.
488 Create a copy if your need to change it.
489 ******************************************************************************/
490
491 NT_USER_TOKEN *get_root_nt_token( void )
492 {
493 static NT_USER_TOKEN *token = NULL;
494 DOM_SID u_sid, g_sid;
495 struct passwd *pw;
496
497 if ( token )
498 return token;
499
500 if ( !(pw = sys_getpwnam( "root" )) ) {
501 DEBUG(0,("get_root_nt_token: getpwnam\"root\") failed!\n"));
502 return NULL;
503 }
504
505 /* get the user and primary group SIDs; although the
506 BUILTIN\Administrators SId is really the one that matters here */
507
508 uid_to_sid(&u_sid, pw->pw_uid);
509 gid_to_sid(&g_sid, pw->pw_gid);
510
511 token = create_local_nt_token(NULL, &u_sid, False,
512 1, &global_sid_Builtin_Administrators);
513 return token;
514 }
515
516 static int server_info_dtor(auth_serversupplied_info *server_info)
517 {
518 TALLOC_FREE(server_info->sam_account);
519 ZERO_STRUCTP(server_info);
520 return 0;
521 }
522
523 /***************************************************************************
524 Make a server_info struct. Free with TALLOC_FREE().
525 ***************************************************************************/
526
527 static auth_serversupplied_info *make_server_info(TALLOC_CTX *mem_ctx)
528 {
529 struct auth_serversupplied_info *result;
530
531 result = TALLOC_ZERO_P(mem_ctx, auth_serversupplied_info);
532 if (result == NULL) {
533 DEBUG(0, ("talloc failed\n"));
534 return NULL;
535 }
536
537 talloc_set_destructor(result, server_info_dtor);
538
539 /* Initialise the uid and gid values to something non-zero
540 which may save us from giving away root access if there
541 is a bug in allocating these fields. */
542
543 result->uid = -1;
544 result->gid = -1;
545 return result;
546 }
547
548 /***************************************************************************
549 Make (and fill) a user_info struct from a struct samu
550 ***************************************************************************/
551
552 NTSTATUS make_server_info_sam(auth_serversupplied_info **server_info,
553 struct samu *sampass)
554 {
555 NTSTATUS status;
556 struct passwd *pwd;
557 gid_t *gids;
558 auth_serversupplied_info *result;
559 int i;
560 size_t num_gids;
561 DOM_SID unix_group_sid;
562
563
564 if ( !(pwd = getpwnam_alloc(NULL, pdb_get_username(sampass))) ) {
565 DEBUG(1, ("User %s in passdb, but getpwnam() fails!\n",
566 pdb_get_username(sampass)));
567 return NT_STATUS_NO_SUCH_USER;
568 }
569
570 if ( !(result = make_server_info(NULL)) ) {
571 TALLOC_FREE(pwd);
572 return NT_STATUS_NO_MEMORY;
573 }
574
575 result->sam_account = sampass;
576 result->unix_name = talloc_strdup(result, pwd->pw_name);
577 result->gid = pwd->pw_gid;
578 result->uid = pwd->pw_uid;
579
580 TALLOC_FREE(pwd);
581
582 status = pdb_enum_group_memberships(result, sampass,
583 &result->sids, &gids,
584 &result->num_sids);
585
586 if (!NT_STATUS_IS_OK(status)) {
587 DEBUG(10, ("pdb_enum_group_memberships failed: %s\n",
588 nt_errstr(status)));
589 result->sam_account = NULL; /* Don't free on error exit. */
590 TALLOC_FREE(result);
591 return status;
592 }
593
594 /* Add the "Unix Group" SID for each gid to catch mapped groups
595 and their Unix equivalent. This is to solve the backwards
596 compatibility problem of 'valid users = +ntadmin' where
597 ntadmin has been paired with "Domain Admins" in the group
598 mapping table. Otherwise smb.conf would need to be changed
599 to 'valid user = "Domain Admins"'. --jerry */
600
601 num_gids = result->num_sids;
602 for ( i=0; i<num_gids; i++ ) {
603 if ( !gid_to_unix_groups_sid( gids[i], &unix_group_sid ) ) {
604 DEBUG(1,("make_server_info_sam: Failed to create SID "
605 "for gid %d!\n", gids[i]));
606 continue;
607 }
608 if (!add_sid_to_array_unique( result, &unix_group_sid,
609 &result->sids, &result->num_sids )) {
610 result->sam_account = NULL; /* Don't free on error exit. */
611 TALLOC_FREE(result);
612 return NT_STATUS_NO_MEMORY;
613 }
614 }
615
616 /* For now we throw away the gids and convert via sid_to_gid
617 * later. This needs fixing, but I'd like to get the code straight and
618 * simple first. */
619
620 TALLOC_FREE(gids);
621
622 DEBUG(5,("make_server_info_sam: made server info for user %s -> %s\n",
623 pdb_get_username(sampass), result->unix_name));
624
625 *server_info = result;
626
627 return NT_STATUS_OK;
628 }
629
630 /*
631 * Add alias SIDs from memberships within the partially created token SID list
632 */
633
634 static NTSTATUS add_aliases(const DOM_SID *domain_sid,
635 struct nt_user_token *token)
636 {
637 uint32 *aliases;
638 size_t i, num_aliases;
639 NTSTATUS status;
640 TALLOC_CTX *tmp_ctx;
641
642 if (!(tmp_ctx = talloc_init("add_aliases"))) {
643 return NT_STATUS_NO_MEMORY;
644 }
645
646 aliases = NULL;
647 num_aliases = 0;
648
649 status = pdb_enum_alias_memberships(tmp_ctx, domain_sid,
650 token->user_sids,
651 token->num_sids,
652 &aliases, &num_aliases);
653
654 if (!NT_STATUS_IS_OK(status)) {
655 DEBUG(10, ("pdb_enum_alias_memberships failed: %s\n",
656 nt_errstr(status)));
657 TALLOC_FREE(tmp_ctx);
658 return status;
659 }
660
661 for (i=0; i<num_aliases; i++) {
662 DOM_SID alias_sid;
663 sid_compose(&alias_sid, domain_sid, aliases[i]);
664 if (!add_sid_to_array_unique(token, &alias_sid,
665 &token->user_sids,
666 &token->num_sids)) {
667 DEBUG(0, ("add_sid_to_array failed\n"));
668 TALLOC_FREE(tmp_ctx);
669 return NT_STATUS_NO_MEMORY;
670 }
671 }
672
673 TALLOC_FREE(tmp_ctx);
674 return NT_STATUS_OK;
675 }
676
677 static NTSTATUS log_nt_token(TALLOC_CTX *tmp_ctx, NT_USER_TOKEN *token)
678 {
679 char *command;
680 char *group_sidstr;
681 size_t i;
682
683 if ((lp_log_nt_token_command() == NULL) ||
684 (strlen(lp_log_nt_token_command()) == 0)) {
685 return NT_STATUS_OK;
686 }
687
688 group_sidstr = talloc_strdup(tmp_ctx, "");
689 for (i=1; i<token->num_sids; i++) {
690 group_sidstr = talloc_asprintf(
691 tmp_ctx, "%s %s", group_sidstr,
692 sid_string_static(&token->user_sids[i]));
693 }
694
695 command = talloc_string_sub(
696 tmp_ctx, lp_log_nt_token_command(),
697 "%s", sid_string_static(&token->user_sids[0]));
698 command = talloc_string_sub(tmp_ctx, command, "%t", group_sidstr);
699
700 if (command == NULL) {
701 return NT_STATUS_NO_MEMORY;
702 }
703
704 DEBUG(8, ("running command: [%s]\n", command));
705 if (smbrun(command, NULL) != 0) {
706 DEBUG(0, ("Could not log NT token\n"));
707 return NT_STATUS_ACCESS_DENIED;
708 }
709
710 return NT_STATUS_OK;
711 }
712
713 /*******************************************************************
714 *******************************************************************/
715
716 static NTSTATUS add_builtin_administrators( struct nt_user_token *token )
717 {
718 DOM_SID domadm;
719
720 /* nothing to do if we aren't in a domain */
721
722 if ( !(IS_DC || lp_server_role()==ROLE_DOMAIN_MEMBER) ) {
723 return NT_STATUS_OK;
724 }
725
726 /* Find the Domain Admins SID */
727
728 if ( IS_DC ) {
729 sid_copy( &domadm, get_global_sam_sid() );
730 } else {
731 if ( !secrets_fetch_domain_sid( lp_workgroup(), &domadm ) )
732 return NT_STATUS_CANT_ACCESS_DOMAIN_INFO;
733 }
734 sid_append_rid( &domadm, DOMAIN_GROUP_RID_ADMINS );
735
736 /* Add Administrators if the user beloongs to Domain Admins */
737
738 if ( nt_token_check_sid( &domadm, token ) ) {
739 if (!add_sid_to_array(token, &global_sid_Builtin_Administrators,
740 &token->user_sids, &token->num_sids)) {
741 return NT_STATUS_NO_MEMORY;
742 }
743 }
744
745 return NT_STATUS_OK;
746 }
747
748 /*******************************************************************
749 *******************************************************************/
750
751 static NTSTATUS create_builtin_users( void )
752 {
753 NTSTATUS status;
754 DOM_SID dom_users;
755
756 status = pdb_create_builtin_alias( BUILTIN_ALIAS_RID_USERS );
757 if ( !NT_STATUS_IS_OK(status) ) {
758 DEBUG(0,("create_builtin_users: Failed to create Users\n"));
759 return status;
760 }
761
762 /* add domain users */
763 if ((IS_DC || (lp_server_role() == ROLE_DOMAIN_MEMBER))
764 && secrets_fetch_domain_sid(lp_workgroup(), &dom_users))
765 {
766 sid_append_rid(&dom_users, DOMAIN_GROUP_RID_USERS );
767 status = pdb_add_aliasmem( &global_sid_Builtin_Users, &dom_users);
768 if ( !NT_STATUS_IS_OK(status) ) {
769 DEBUG(0,("create_builtin_users: Failed to add Domain Users to"
770 " Users\n"));
771 return status;
772 }
773 }
774
775 return NT_STATUS_OK;
776 }
777
778 /*******************************************************************
779 *******************************************************************/
780
781 static NTSTATUS create_builtin_administrators( void )
782 {
783 NTSTATUS status;
784 DOM_SID dom_admins, root_sid;
785 fstring root_name;
786 enum lsa_SidType type;
787 TALLOC_CTX *ctx;
788 BOOL ret;
789
790 status = pdb_create_builtin_alias( BUILTIN_ALIAS_RID_ADMINS );
791 if ( !NT_STATUS_IS_OK(status) ) {
792 DEBUG(0,("create_builtin_administrators: Failed to create Administrators\n"));
793 return status;
794 }
795
796 /* add domain admins */
797 if ((IS_DC || (lp_server_role() == ROLE_DOMAIN_MEMBER))
798 && secrets_fetch_domain_sid(lp_workgroup(), &dom_admins))
799 {
800 sid_append_rid(&dom_admins, DOMAIN_GROUP_RID_ADMINS);
801 status = pdb_add_aliasmem( &global_sid_Builtin_Administrators, &dom_admins );
802 if ( !NT_STATUS_IS_OK(status) ) {
803 DEBUG(0,("create_builtin_administrators: Failed to add Domain Admins"
804 " Administrators\n"));
805 return status;
806 }
807 }
808
809 /* add root */
810 if ( (ctx = talloc_init("create_builtin_administrators")) == NULL ) {
811 return NT_STATUS_NO_MEMORY;
812 }
813 fstr_sprintf( root_name, "%s\\root", get_global_sam_name() );
814 ret = lookup_name( ctx, root_name, 0, NULL, NULL, &root_sid, &type );
815 TALLOC_FREE( ctx );
816
817 if ( ret ) {
818 status = pdb_add_aliasmem( &global_sid_Builtin_Administrators, &root_sid );
819 if ( !NT_STATUS_IS_OK(status) ) {
820 DEBUG(0,("create_builtin_administrators: Failed to add root"
821 " Administrators\n"));
822 return status;
823 }
824 }
825
826 return NT_STATUS_OK;
827 }
828
829 /*******************************************************************
830 Create a NT token for the user, expanding local aliases
831 *******************************************************************/
832
833 static struct nt_user_token *create_local_nt_token(TALLOC_CTX *mem_ctx,
834 const DOM_SID *user_sid,
835 BOOL is_guest,
836 int num_groupsids,
837 const DOM_SID *groupsids)
838 {
839 struct nt_user_token *result = NULL;
840 int i;
841 NTSTATUS status;
842 gid_t gid;
843
844 DEBUG(10, ("Create local NT token for %s\n", sid_string_static(user_sid)));
845
846 if (!(result = TALLOC_ZERO_P(mem_ctx, NT_USER_TOKEN))) {
847 DEBUG(0, ("talloc failed\n"));
848 return NULL;
849 }
850
851 /* Add the user and primary group sid */
852
853 if (!add_sid_to_array(result, user_sid,
854 &result->user_sids, &result->num_sids)) {
855 return NULL;
856 }
857
858 /* For guest, num_groupsids may be zero. */
859 if (num_groupsids) {
860 if (!add_sid_to_array(result, &groupsids[0],
861 &result->user_sids, &result->num_sids)) {
862 return NULL;
863 }
864 }
865
866 /* Add in BUILTIN sids */
867
868 if (!add_sid_to_array(result, &global_sid_World,
869 &result->user_sids, &result->num_sids)) {
870 return NULL;
871 }
872 if (!add_sid_to_array(result, &global_sid_Network,
873 &result->user_sids, &result->num_sids)) {
874 return NULL;
875 }
876
877 if (is_guest) {
878 if (!add_sid_to_array(result, &global_sid_Builtin_Guests,
879 &result->user_sids, &result->num_sids)) {
880 return NULL;
881 }
882 } else {
883 if (!add_sid_to_array(result, &global_sid_Authenticated_Users,
884 &result->user_sids, &result->num_sids)) {
885 return NULL;
886 }
887 }
888
889 /* Now the SIDs we got from authentication. These are the ones from
890 * the info3 struct or from the pdb_enum_group_memberships, depending
891 * on who authenticated the user.
892 * Note that we start the for loop at "1" here, we already added the
893 * first group sid as primary above. */
894
895 for (i=1; i<num_groupsids; i++) {
896 if (!add_sid_to_array_unique(result, &groupsids[i],
897 &result->user_sids, &result->num_sids)) {
898 return NULL;
899 }
900 }
901
902 /* Deal with the BUILTIN\Administrators group. If the SID can
903 be resolved then assume that the add_aliasmem( S-1-5-32 )
904 handled it. */
905
906 if ( !sid_to_gid( &global_sid_Builtin_Administrators, &gid ) ) {
907 /* We can only create a mapping if winbind is running
908 and the nested group functionality has been enabled */
909
910 if ( lp_winbind_nested_groups() && winbind_ping() ) {
911 become_root();
912 status = create_builtin_administrators( );
913 if ( !NT_STATUS_IS_OK(status) ) {
914 DEBUG(2,("create_local_nt_token: Failed to create BUILTIN\\Administrators group!\n"));
915 /* don't fail, just log the message */
916 }
917 unbecome_root();
918 }
919 else {
920 status = add_builtin_administrators( result );
921 if ( !NT_STATUS_IS_OK(status) ) {
922 /* just log a complaint but do not fail */
923 DEBUG(3,("create_local_nt_token: failed to check for local Administrators"
924 " membership (%s)\n", nt_errstr(status)));
925 }
926 }
927 }
928
929 /* Deal with the BUILTIN\Users group. If the SID can
930 be resolved then assume that the add_aliasmem( S-1-5-32 )
931 handled it. */
932
933 if ( !sid_to_gid( &global_sid_Builtin_Users, &gid ) ) {
934 /* We can only create a mapping if winbind is running
935 and the nested group functionality has been enabled */
936
937 if ( lp_winbind_nested_groups() && winbind_ping() ) {
938 become_root();
939 status = create_builtin_users( );
940 if ( !NT_STATUS_IS_OK(status) ) {
941 DEBUG(2,("create_local_nt_token: Failed to create BUILTIN\\Users group!\n"));
942 /* don't fail, just log the message */
943 }
944 unbecome_root();
945 }
946 }
947
948 /* Deal with local groups */
949
950 if (lp_winbind_nested_groups()) {
951
952 become_root();
953
954 /* Now add the aliases. First the one from our local SAM */
955
956 status = add_aliases(get_global_sam_sid(), result);
957
958 if (!NT_STATUS_IS_OK(status)) {
959 TALLOC_FREE(result);
960 return NULL;
961 }
962
963 /* Finally the builtin ones */
964
965 status = add_aliases(&global_sid_Builtin, result);
966
967 if (!NT_STATUS_IS_OK(status)) {
968 TALLOC_FREE(result);
969 return NULL;
970 }
971
972 unbecome_root();
973 }
974
975
976 get_privileges_for_sids(&result->privileges, result->user_sids,
977 result->num_sids);
978 return result;
979 }
980
981 /*
982 * Create the token to use from server_info->sam_account and
983 * server_info->sids (the info3/sam groups). Find the unix gids.
984 */
985
986 NTSTATUS create_local_token(auth_serversupplied_info *server_info)
987 {
988 TALLOC_CTX *mem_ctx;
989 NTSTATUS status;
990 size_t i;
991
992
993 mem_ctx = talloc_new(NULL);
994 if (mem_ctx == NULL) {
995 DEBUG(0, ("talloc_new failed\n"));
996 return NT_STATUS_NO_MEMORY;
997 }
998
999 /*
1000 * If winbind is not around, we can not make much use of the SIDs the
1001 * domain controller provided us with. Likewise if the user name was
1002 * mapped to some local unix user.
1003 */
1004
1005 if (((lp_server_role() == ROLE_DOMAIN_MEMBER) && !winbind_ping()) ||
1006 (server_info->was_mapped)) {
1007 status = create_token_from_username(server_info,
1008 server_info->unix_name,
1009 server_info->guest,
1010 &server_info->uid,
1011 &server_info->gid,
1012 &server_info->unix_name,
1013 &server_info->ptok);
1014
1015 } else {
1016 server_info->ptok = create_local_nt_token(
1017 server_info,
1018 pdb_get_user_sid(server_info->sam_account),
1019 server_info->guest,
1020 server_info->num_sids, server_info->sids);
1021 status = server_info->ptok ?
1022 NT_STATUS_OK : NT_STATUS_NO_SUCH_USER;
1023 }
1024
1025 if (!NT_STATUS_IS_OK(status)) {
1026 TALLOC_FREE(mem_ctx);
1027 return status;
1028 }
1029
1030 /* Convert the SIDs to gids. */
1031
1032 server_info->n_groups = 0;
1033 server_info->groups = NULL;
1034
1035 /* Start at index 1, where the groups start. */
1036
1037 for (i=1; i<server_info->ptok->num_sids; i++) {
1038 gid_t gid;
1039 DOM_SID *sid = &server_info->ptok->user_sids[i];
1040
1041 if (!sid_to_gid(sid, &gid)) {
1042 DEBUG(10, ("Could not convert SID %s to gid, "
1043 "ignoring it\n", sid_string_static(sid)));
1044 continue;
1045 }
1046 add_gid_to_array_unique(server_info, gid, &server_info->groups,
1047 &server_info->n_groups);
1048 }
1049
1050 debug_nt_user_token(DBGC_AUTH, 10, server_info->ptok);
1051
1052 status = log_nt_token(mem_ctx, server_info->ptok);
1053
1054 TALLOC_FREE(mem_ctx);
1055 return status;
1056 }
1057
1058 /*
1059 * Create an artificial NT token given just a username. (Initially indended
1060 * for force user)
1061 *
1062 * We go through lookup_name() to avoid problems we had with 'winbind use
1063 * default domain'.
1064 *
1065 * We have 3 cases:
1066 *
1067 * unmapped unix users: Go directly to nss to find the user's group.
1068 *
1069 * A passdb user: The list of groups is provided by pdb_enum_group_memberships.
1070 *
1071 * If the user is provided by winbind, the primary gid is set to "domain
1072 * users" of the user's domain. For an explanation why this is necessary, see
1073 * the thread starting at
1074 * http://lists.samba.org/archive/samba-technical/2006-January/044803.html.
1075 */
1076
1077 NTSTATUS create_token_from_username(TALLOC_CTX *mem_ctx, const char *username,
1078 BOOL is_guest,
1079 uid_t *uid, gid_t *gid,
1080 char **found_username,
1081 struct nt_user_token **token)
1082 {
1083 NTSTATUS result = NT_STATUS_NO_SUCH_USER;
1084 TALLOC_CTX *tmp_ctx;
1085 DOM_SID user_sid;
1086 enum lsa_SidType type;
1087 gid_t *gids;
1088 DOM_SID *group_sids;
1089 DOM_SID unix_group_sid;
1090 size_t num_group_sids;
1091 size_t num_gids;
1092 size_t i;
1093
1094 tmp_ctx = talloc_new(NULL);
1095 if (tmp_ctx == NULL) {
1096 DEBUG(0, ("talloc_new failed\n"));
1097 return NT_STATUS_NO_MEMORY;
1098 }
1099
1100 if (!lookup_name_smbconf(tmp_ctx, username, LOOKUP_NAME_ALL,
1101 NULL, NULL, &user_sid, &type)) {
1102 DEBUG(1, ("lookup_name_smbconf for %s failed\n", username));
1103 goto done;
1104 }
1105
1106 if (type != SID_NAME_USER) {
1107 DEBUG(1, ("%s is a %s, not a user\n", username,
1108 sid_type_lookup(type)));
1109 goto done;
1110 }
1111
1112 if (!sid_to_uid(&user_sid, uid)) {
1113 DEBUG(1, ("sid_to_uid for %s (%s) failed\n",
1114 username, sid_string_static(&user_sid)));
1115 goto done;
1116 }
1117
1118 if (sid_check_is_in_our_domain(&user_sid)) {
1119
1120 /* This is a passdb user, so ask passdb */
1121
1122 struct samu *sam_acct = NULL;
1123
1124 if ( !(sam_acct = samu_new( tmp_ctx )) ) {
1125 result = NT_STATUS_NO_MEMORY;
1126 goto done;
1127 }
1128
1129 if (!pdb_getsampwsid(sam_acct, &user_sid)) {
1130 DEBUG(1, ("pdb_getsampwsid(%s) for user %s failed\n",
1131 sid_string_static(&user_sid), username));
1132 DEBUGADD(1, ("Fall back to unix user %s\n", username));
1133 goto unix_user;
1134 }
1135
1136 result = pdb_enum_group_memberships(tmp_ctx, sam_acct,
1137 &group_sids, &gids,
1138 &num_group_sids);
1139 if (!NT_STATUS_IS_OK(result)) {
1140 DEBUG(10, ("enum_group_memberships failed for %s\n",
1141 username));
1142 DEBUGADD(1, ("Fall back to unix user %s\n", username));
1143 goto unix_user;
1144 }
1145
1146 /* see the smb_panic() in pdb_default_enum_group_memberships */
1147 SMB_ASSERT(num_group_sids > 0);
1148
1149 *gid = gids[0];
1150
1151 /* Ensure we're returning the found_username on the right context. */
1152 *found_username = talloc_strdup(mem_ctx,
1153 pdb_get_username(sam_acct));
1154
1155 } else if (sid_check_is_in_unix_users(&user_sid)) {
1156
1157 /* This is a unix user not in passdb. We need to ask nss
1158 * directly, without consulting passdb */
1159
1160 struct passwd *pass;
1161
1162 /*
1163 * This goto target is used as a fallback for the passdb
1164 * case. The concrete bug report is when passdb gave us an
1165 * unmapped gid.
1166 */
1167
1168 unix_user:
1169
1170 uid_to_unix_users_sid(*uid, &user_sid);
1171
1172 pass = getpwuid_alloc(tmp_ctx, *uid);
1173 if (pass == NULL) {
1174 DEBUG(1, ("getpwuid(%d) for user %s failed\n",
1175 *uid, username));
1176 goto done;
1177 }
1178
1179 if (!getgroups_unix_user(tmp_ctx, username, pass->pw_gid,
1180 &gids, &num_group_sids)) {
1181 DEBUG(1, ("getgroups_unix_user for user %s failed\n",
1182 username));
1183 goto done;
1184 }
1185
1186 if (num_group_sids) {
1187 group_sids = TALLOC_ARRAY(tmp_ctx, DOM_SID, num_group_sids);
1188 if (group_sids == NULL) {
1189 DEBUG(1, ("TALLOC_ARRAY failed\n"));
1190 result = NT_STATUS_NO_MEMORY;
1191 goto done;
1192 }
1193 } else {
1194 group_sids = NULL;
1195 }
1196
1197 for (i=0; i<num_group_sids; i++) {
1198 gid_to_sid(&group_sids[i], gids[i]);
1199 }
1200
1201 /* In getgroups_unix_user we always set the primary gid */
1202 SMB_ASSERT(num_group_sids > 0);
1203
1204 *gid = gids[0];
1205
1206 /* Ensure we're returning the found_username on the right context. */
1207 *found_username = talloc_strdup(mem_ctx, pass->pw_name);
1208 } else {
1209
1210 /* This user is from winbind, force the primary gid to the
1211 * user's "domain users" group. Under certain circumstances
1212 * (user comes from NT4), this might be a loss of
1213 * information. But we can not rely on winbind getting the
1214 * correct info. AD might prohibit winbind looking up that
1215 * information. */
1216
1217 uint32 dummy;
1218
1219 num_group_sids = 1;
1220 group_sids = TALLOC_ARRAY(tmp_ctx, DOM_SID, num_group_sids);
1221 if (group_sids == NULL) {
1222 DEBUG(1, ("TALLOC_ARRAY failed\n"));
1223 result = NT_STATUS_NO_MEMORY;
1224 goto done;
1225 }
1226
1227 sid_copy(&group_sids[0], &user_sid);
1228 sid_split_rid(&group_sids[0], &dummy);
1229 sid_append_rid(&group_sids[0], DOMAIN_GROUP_RID_USERS);
1230
1231 if (!sid_to_gid(&group_sids[0], gid)) {
1232 DEBUG(1, ("sid_to_gid(%s) failed\n",
1233 sid_string_static(&group_sids[0])));
1234 goto done;
1235 }
1236
1237 gids = gid;
1238
1239 /* Ensure we're returning the found_username on the right context. */
1240 *found_username = talloc_strdup(mem_ctx, username);
1241 }
1242
1243 /* Add the "Unix Group" SID for each gid to catch mapped groups
1244 and their Unix equivalent. This is to solve the backwards
1245 compatibility problem of 'valid users = +ntadmin' where
1246 ntadmin has been paired with "Domain Admins" in the group
1247 mapping table. Otherwise smb.conf would need to be changed
1248 to 'valid user = "Domain Admins"'. --jerry */
1249
1250 num_gids = num_group_sids;
1251 for ( i=0; i<num_gids; i++ ) {
1252 gid_t high, low;
1253
1254 /* don't pickup anything managed by Winbind */
1255
1256 if ( lp_idmap_gid(&low, &high) && (gids[i] >= low) && (gids[i] <= high) )
1257 continue;
1258
1259 if ( !gid_to_unix_groups_sid( gids[i], &unix_group_sid ) ) {
1260 DEBUG(1,("create_token_from_username: Failed to create SID "
1261 "for gid %d!\n", gids[i]));
1262 continue;
1263 }
1264 if (!add_sid_to_array_unique(tmp_ctx, &unix_group_sid,
1265 &group_sids, &num_group_sids )) {
1266 result = NT_STATUS_NO_MEMORY;
1267 goto done;
1268 }
1269 }
1270
1271 /* Ensure we're creating the nt_token on the right context. */
1272 *token = create_local_nt_token(mem_ctx, &user_sid,
1273 is_guest, num_group_sids, group_sids);
1274
1275 if ((*token == NULL) || (*found_username == NULL)) {
1276 result = NT_STATUS_NO_MEMORY;
1277 goto done;
1278 }
1279
1280 result = NT_STATUS_OK;
1281 done:
1282 TALLOC_FREE(tmp_ctx);
1283 return result;
1284 }
1285
1286 /***************************************************************************
1287 Build upon create_token_from_username:
1288
1289 Expensive helper function to figure out whether a user given its name is
1290 member of a particular group.
1291 ***************************************************************************/
1292
1293 BOOL user_in_group_sid(const char *username, const DOM_SID *group_sid)
1294 {
1295 NTSTATUS status;
1296 uid_t uid;
1297 gid_t gid;
1298 char *found_username;
1299 struct nt_user_token *token;
1300 BOOL result;
1301
1302 TALLOC_CTX *mem_ctx;
1303
1304 mem_ctx = talloc_new(NULL);
1305 if (mem_ctx == NULL) {
1306 DEBUG(0, ("talloc_new failed\n"));
1307 return False;
1308 }
1309
1310 status = create_token_from_username(mem_ctx, username, False,
1311 &uid, &gid, &found_username,
1312 &token);
1313
1314 if (!NT_STATUS_IS_OK(status)) {
1315 DEBUG(10, ("could not create token for %s\n", username));
1316 return False;
1317 }
1318
1319 result = nt_token_check_sid(group_sid, token);
1320
1321 TALLOC_FREE(mem_ctx);
1322 return result;
1323
1324 }
1325
1326 BOOL user_in_group(const char *username, const char *groupname)
1327 {
1328 TALLOC_CTX *mem_ctx;
1329 DOM_SID group_sid;
1330 BOOL ret;
1331
1332 mem_ctx = talloc_new(NULL);
1333 if (mem_ctx == NULL) {
1334 DEBUG(0, ("talloc_new failed\n"));
1335 return False;
1336 }
1337
1338 ret = lookup_name(mem_ctx, groupname, LOOKUP_NAME_ALL,
1339 NULL, NULL, &group_sid, NULL);
1340 TALLOC_FREE(mem_ctx);
1341
1342 if (!ret) {
1343 DEBUG(10, ("lookup_name for (%s) failed.\n", groupname));
1344 return False;
1345 }
1346
1347 return user_in_group_sid(username, &group_sid);
1348 }
1349
1350
1351 /***************************************************************************
1352 Make (and fill) a user_info struct from a 'struct passwd' by conversion
1353 to a struct samu
1354 ***************************************************************************/
1355
1356 NTSTATUS make_server_info_pw(auth_serversupplied_info **server_info,
1357 char *unix_username,
1358 struct passwd *pwd)
1359 {
1360 NTSTATUS status;
1361 struct samu *sampass = NULL;
1362 gid_t *gids;
1363 char *qualified_name = NULL;
1364 TALLOC_CTX *mem_ctx = NULL;
1365 DOM_SID u_sid;
1366 enum lsa_SidType type;
1367 auth_serversupplied_info *result;
1368
1369 if ( !(sampass = samu_new( NULL )) ) {
1370 return NT_STATUS_NO_MEMORY;
1371 }
1372
1373 status = samu_set_unix( sampass, pwd );
1374 if (!NT_STATUS_IS_OK(status)) {
1375 return status;
1376 }
1377
1378 result = make_server_info(NULL);
1379 if (result == NULL) {
1380 TALLOC_FREE(sampass);
1381 return NT_STATUS_NO_MEMORY;
1382 }
1383
1384 result->sam_account = sampass;
1385 result->unix_name = talloc_strdup(result, unix_username);
1386 result->uid = pwd->pw_uid;
1387 result->gid = pwd->pw_gid;
1388
1389 status = pdb_enum_group_memberships(result, sampass,
1390 &result->sids, &gids,
1391 &result->num_sids);
1392
1393 if (!NT_STATUS_IS_OK(status)) {
1394 DEBUG(10, ("pdb_enum_group_memberships failed: %s\n",
1395 nt_errstr(status)));
1396 TALLOC_FREE(result);
1397 return status;
1398 }
1399
1400 /*
1401 * The SID returned in server_info->sam_account is based
1402 * on our SAM sid even though for a pure UNIX account this should
1403 * not be the case as it doesn't really exist in the SAM db.
1404 * This causes lookups on "[in]valid users" to fail as they
1405 * will lookup this name as a "Unix User" SID to check against
1406 * the user token. Fix this by adding the "Unix User"\unix_username
1407 * SID to the sid array. The correct fix should probably be
1408 * changing the server_info->sam_account user SID to be a
1409 * S-1-22 Unix SID, but this might break old configs where
1410 * plaintext passwords were used with no SAM backend.
1411 */
1412
1413 mem_ctx = talloc_init("make_server_info_pw_tmp");
1414 if (!mem_ctx) {
1415 TALLOC_FREE(result);
1416 return NT_STATUS_NO_MEMORY;
1417 }
1418
1419 qualified_name = talloc_asprintf(mem_ctx, "%s\\%s",
1420 unix_users_domain_name(),
1421 unix_username );
1422 if (!qualified_name) {
1423 TALLOC_FREE(result);
1424 TALLOC_FREE(mem_ctx);
1425 return NT_STATUS_NO_MEMORY;
1426 }
1427
1428 if (!lookup_name(mem_ctx, qualified_name, LOOKUP_NAME_ALL,
1429 NULL, NULL,
1430 &u_sid, &type)) {
1431 TALLOC_FREE(result);
1432 TALLOC_FREE(mem_ctx);
1433 return NT_STATUS_NO_SUCH_USER;
1434 }
1435
1436 TALLOC_FREE(mem_ctx);
1437
1438 if (type != SID_NAME_USER) {
1439 TALLOC_FREE(result);
1440 return NT_STATUS_NO_SUCH_USER;
1441 }
1442
1443 if (!add_sid_to_array_unique(result, &u_sid,
1444 &result->sids,
1445 &result->num_sids)) {
1446 TALLOC_FREE(result);
1447 return NT_STATUS_NO_MEMORY;
1448 }
1449
1450 /* For now we throw away the gids and convert via sid_to_gid
1451 * later. This needs fixing, but I'd like to get the code straight and
1452 * simple first. */
1453 TALLOC_FREE(gids);
1454
1455 *server_info = result;
1456
1457 return NT_STATUS_OK;
1458 }
1459
1460 /***************************************************************************
1461 Make (and fill) a user_info struct for a guest login.
1462 This *must* succeed for smbd to start. If there is no mapping entry for
1463 the guest gid, then create one.
1464 ***************************************************************************/
1465
1466 static NTSTATUS make_new_server_info_guest(auth_serversupplied_info **server_info)
1467 {
1468 NTSTATUS status;
1469 struct samu *sampass = NULL;
1470 DOM_SID guest_sid;
1471 BOOL ret;
1472 static const char zeros[16] = { 0, };
1473
1474 if ( !(sampass = samu_new( NULL )) ) {
1475 return NT_STATUS_NO_MEMORY;
1476 }
1477
1478 sid_copy(&guest_sid, get_global_sam_sid());
1479 sid_append_rid(&guest_sid, DOMAIN_USER_RID_GUEST);
1480
1481 become_root();
1482 ret = pdb_getsampwsid(sampass, &guest_sid);
1483 unbecome_root();
1484
1485 if (!ret) {
1486 TALLOC_FREE(sampass);
1487 return NT_STATUS_NO_SUCH_USER;
1488 }
1489
1490 status = make_server_info_sam(server_info, sampass);
1491 if (!NT_STATUS_IS_OK(status)) {
1492 TALLOC_FREE(sampass);
1493 return status;
1494 }
1495
1496 (*server_info)->guest = True;
1497
1498 status = create_local_token(*server_info);
1499 if (!NT_STATUS_IS_OK(status)) {
1500 DEBUG(10, ("create_local_token failed: %s\n",
1501 nt_errstr(status)));
1502 return status;
1503 }
1504
1505 /* annoying, but the Guest really does have a session key, and it is
1506 all zeros! */
1507 (*server_info)->user_session_key = data_blob(zeros, sizeof(zeros));
1508 (*server_info)->lm_session_key = data_blob(zeros, sizeof(zeros));
1509
1510 return NT_STATUS_OK;
1511 }
1512
1513 static auth_serversupplied_info *copy_serverinfo(auth_serversupplied_info *src)
1514 {
1515 auth_serversupplied_info *dst;
1516
1517 dst = make_server_info(NULL);
1518 if (dst == NULL) {
1519 return NULL;
1520 }
1521
1522 dst->guest = src->guest;
1523 dst->uid = src->uid;
1524 dst->gid = src->gid;
1525 dst->n_groups = src->n_groups;
1526 if (src->n_groups != 0) {
1527 dst->groups = (gid_t *)TALLOC_MEMDUP(
1528 dst, src->groups, sizeof(gid_t)*dst->n_groups);
1529 } else {
1530 dst->groups = NULL;
1531 }
1532
1533 if (src->ptok) {
1534 dst->ptok = dup_nt_token(dst, src->ptok);
1535 if (!dst->ptok) {
1536 TALLOC_FREE(dst);
1537 return NULL;
1538 }
1539 }
1540
1541 dst->user_session_key = data_blob_talloc( dst, src->user_session_key.data,
1542 src->user_session_key.length);
1543
1544 dst->lm_session_key = data_blob_talloc(dst, src->lm_session_key.data,
1545 src->lm_session_key.length);
1546
1547 dst->sam_account = samu_new(NULL);
1548 if (!dst->sam_account) {
1549 TALLOC_FREE(dst);
1550 return NULL;
1551 }
1552
1553 if (!pdb_copy_sam_account(dst->sam_account, src->sam_account)) {
1554 TALLOC_FREE(dst);
1555 return NULL;
1556 }
1557
1558 dst->pam_handle = NULL;
1559 dst->unix_name = talloc_strdup(dst, src->unix_name);
1560 if (!dst->unix_name) {
1561 TALLOC_FREE(dst);
1562 return NULL;
1563 }
1564
1565 return dst;
1566 }
1567
1568 static auth_serversupplied_info *guest_info = NULL;
1569
1570 BOOL init_guest_info(void)
1571 {
1572 if (guest_info != NULL)
1573 return True;
1574
1575 return NT_STATUS_IS_OK(make_new_server_info_guest(&guest_info));
1576 }
1577
1578 NTSTATUS make_server_info_guest(auth_serversupplied_info **server_info)
1579 {
1580 *server_info = copy_serverinfo(guest_info);
1581 return (*server_info != NULL) ? NT_STATUS_OK : NT_STATUS_NO_MEMORY;
1582 }
1583
1584 BOOL copy_current_user(struct current_user *dst, struct current_user *src)
1585 {
1586 gid_t *groups;
1587 NT_USER_TOKEN *nt_token;
1588
1589 groups = (gid_t *)memdup(src->ut.groups,
1590 sizeof(gid_t) * src->ut.ngroups);
1591 if ((src->ut.ngroups != 0) && (groups == NULL)) {
1592 return False;
1593 }
1594
1595 nt_token = dup_nt_token(NULL, src->nt_user_token);
1596 if (nt_token == NULL) {
1597 SAFE_FREE(groups);
1598 return False;
1599 }
1600
1601 dst->conn = src->conn;
1602 dst->vuid = src->vuid;
1603 dst->ut.uid = src->ut.uid;
1604 dst->ut.gid = src->ut.gid;
1605 dst->ut.ngroups = src->ut.ngroups;
1606 dst->ut.groups = groups;
1607 dst->nt_user_token = nt_token;
1608 return True;
1609 }
1610
1611 BOOL set_current_user_guest(struct current_user *dst)
1612 {
1613 gid_t *groups;
1614 NT_USER_TOKEN *nt_token;
1615
1616 groups = (gid_t *)memdup(guest_info->groups,
1617 sizeof(gid_t) * guest_info->n_groups);
1618 if (groups == NULL) {
1619 return False;
1620 }
1621
1622 nt_token = dup_nt_token(NULL, guest_info->ptok);
1623 if (nt_token == NULL) {
1624 SAFE_FREE(groups);
1625 return False;
1626 }
1627
1628 TALLOC_FREE(dst->nt_user_token);
1629 SAFE_FREE(dst->ut.groups);
1630
1631 /* dst->conn is never really dereferenced, it's only tested for
1632 * equality in uid.c */
1633 dst->conn = NULL;
1634
1635 dst->vuid = UID_FIELD_INVALID;
1636 dst->ut.uid = guest_info->uid;
1637 dst->ut.gid = guest_info->gid;
1638 dst->ut.ngroups = guest_info->n_groups;
1639 dst->ut.groups = groups;
1640 dst->nt_user_token = nt_token;
1641 return True;
1642 }
1643
1644 /***************************************************************************
1645 Purely internal function for make_server_info_info3
1646 Fill the sam account from getpwnam
1647 ***************************************************************************/
1648 static NTSTATUS fill_sam_account(TALLOC_CTX *mem_ctx,
1649 const char *domain,
1650 const char *username,
1651 char **found_username,
1652 uid_t *uid, gid_t *gid,
1653 struct samu *account,
1654 BOOL *username_was_mapped)
1655 {
1656 NTSTATUS nt_status;
1657 fstring dom_user, lower_username;
1658 fstring real_username;
1659 struct passwd *passwd;
1660
1661 fstrcpy( lower_username, username );
1662 strlower_m( lower_username );
1663
1664 fstr_sprintf(dom_user, "%s%c%s", domain, *lp_winbind_separator(),
1665 lower_username);
1666
1667 /* Get the passwd struct. Try to create the account is necessary. */
1668
1669 *username_was_mapped = map_username( dom_user );
1670
1671 if ( !(passwd = smb_getpwnam( NULL, dom_user, real_username, True )) )
1672 return NT_STATUS_NO_SUCH_USER;
1673
1674 *uid = passwd->pw_uid;
1675 *gid = passwd->pw_gid;
1676
1677 /* This is pointless -- there is no suport for differing
1678 unix and windows names. Make sure to always store the
1679 one we actually looked up and succeeded. Have I mentioned
1680 why I hate the 'winbind use default domain' parameter?
1681 --jerry */
1682
1683 *found_username = talloc_strdup( mem_ctx, real_username );
1684
1685 DEBUG(5,("fill_sam_account: located username was [%s]\n", *found_username));
1686
1687 nt_status = samu_set_unix( account, passwd );
1688
1689 TALLOC_FREE(passwd);
1690
1691 return nt_status;
1692 }
1693
1694 /****************************************************************************
1695 Wrapper to allow the getpwnam() call to strip the domain name and
1696 try again in case a local UNIX user is already there. Also run through
1697 the username if we fallback to the username only.
1698 ****************************************************************************/
1699
1700 struct passwd *smb_getpwnam( TALLOC_CTX *mem_ctx, char *domuser,
1701 fstring save_username, BOOL create )
1702 {
1703 struct passwd *pw = NULL;
1704 char *p;
1705 fstring username;
1706
1707 /* we only save a copy of the username it has been mangled
1708 by winbindd use default domain */
1709
1710 save_username[0] = '\0';
1711
1712 /* don't call map_username() here since it has to be done higher
1713 up the stack so we don't call it mutliple times */
1714
1715 fstrcpy( username, domuser );
1716
1717 p = strchr_m( username, *lp_winbind_separator() );
1718
1719 /* code for a DOMAIN\user string */
1720
1721 if ( p ) {
1722 fstring strip_username;
1723
1724 pw = Get_Pwnam_alloc( mem_ctx, domuser );
1725 if ( pw ) {
1726 /* make sure we get the case of the username correct */
1727 /* work around 'winbind use default domain = yes' */
1728
1729 if ( !strchr_m( pw->pw_name, *lp_winbind_separator() ) ) {
1730 char *domain;
1731
1732 /* split the domain and username into 2 strings */
1733 *p = '\0';
1734 domain = username;
1735
1736 fstr_sprintf(save_username, "%s%c%s", domain, *lp_winbind_separator(), pw->pw_name);
1737 }
1738 else
1739 fstrcpy( save_username, pw->pw_name );
1740
1741 /* whew -- done! */
1742 return pw;
1743 }
1744
1745 /* setup for lookup of just the username */
1746 /* remember that p and username are overlapping memory */
1747
1748 p++;
1749 fstrcpy( strip_username, p );
1750 fstrcpy( username, strip_username );
1751 }
1752
1753 /* just lookup a plain username */
1754
1755 pw = Get_Pwnam_alloc(mem_ctx, username);
1756
1757 /* Create local user if requested but only if winbindd
1758 is not running. We need to protect against cases
1759 where winbindd is failing and then prematurely
1760 creating users in /etc/passwd */
1761
1762 if ( !pw && create && !winbind_ping() ) {
1763 /* Don't add a machine account. */
1764 if (username[strlen(username)-1] == '$')
1765 return NULL;
1766
1767 smb_create_user(NULL, username, NULL);
1768 pw = Get_Pwnam_alloc(mem_ctx, username);
1769 }
1770
1771 /* one last check for a valid passwd struct */
1772
1773 if ( pw )
1774 fstrcpy( save_username, pw->pw_name );
1775
1776 return pw;
1777 }
1778
1779 /***************************************************************************
1780 Make a server_info struct from the info3 returned by a domain logon
1781 ***************************************************************************/
1782
1783 NTSTATUS make_server_info_info3(TALLOC_CTX *mem_ctx,
1784 const char *sent_nt_username,
1785 const char *domain,
1786 auth_serversupplied_info **server_info,
1787 NET_USER_INFO_3 *info3)
1788 {
1789 static const char zeros[16] = { 0, };
1790
1791 NTSTATUS nt_status = NT_STATUS_OK;
1792 char *found_username;
1793 const char *nt_domain;
1794 const char *nt_username;
1795 struct samu *sam_account = NULL;
1796 DOM_SID user_sid;
1797 DOM_SID group_sid;
1798 BOOL username_was_mapped;
1799
1800 uid_t uid;
1801 gid_t gid;
1802
1803 size_t i;
1804
1805 auth_serversupplied_info *result;
1806
1807 /*
1808 Here is where we should check the list of
1809 trusted domains, and verify that the SID
1810 matches.
1811 */
1812
1813 sid_copy(&user_sid, &info3->dom_sid.sid);
1814 if (!sid_append_rid(&user_sid, info3->user_rid)) {
1815 return NT_STATUS_INVALID_PARAMETER;
1816 }
1817
1818 sid_copy(&group_sid, &info3->dom_sid.sid);
1819 if (!sid_append_rid(&group_sid, info3->group_rid)) {
1820 return NT_STATUS_INVALID_PARAMETER;
1821 }
1822
1823 if (!(nt_username = unistr2_tdup(mem_ctx, &(info3->uni_user_name)))) {
1824 /* If the server didn't give us one, just use the one we sent
1825 * them */
1826 nt_username = sent_nt_username;
1827 }
1828
1829 if (!(nt_domain = unistr2_tdup(mem_ctx, &(info3->uni_logon_dom)))) {
1830 /* If the server didn't give us one, just use the one we sent
1831 * them */
1832 nt_domain = domain;
1833 }
1834
1835 /* try to fill the SAM account.. If getpwnam() fails, then try the
1836 add user script (2.2.x behavior).
1837
1838 We use the _unmapped_ username here in an attempt to provide
1839 consistent username mapping behavior between kerberos and NTLM[SSP]
1840 authentication in domain mode security. I.E. Username mapping
1841 should be applied to the fully qualified username
1842 (e.g. DOMAIN\user) and not just the login name. Yes this means we
1843 called map_username() unnecessarily in make_user_info_map() but
1844 that is how the current code is designed. Making the change here
1845 is the least disruptive place. -- jerry */
1846
1847 if ( !(sam_account = samu_new( NULL )) ) {
1848 return NT_STATUS_NO_MEMORY;
1849 }
1850
1851 /* this call will try to create the user if necessary */
1852
1853 nt_status = fill_sam_account(mem_ctx, nt_domain, sent_nt_username,
1854 &found_username, &uid, &gid, sam_account,
1855 &username_was_mapped);
1856
1857
1858 /* if we still don't have a valid unix account check for
1859 'map to guest = bad uid' */
1860
1861 if (!NT_STATUS_IS_OK(nt_status)) {
1862 TALLOC_FREE( sam_account );
1863 if ( lp_map_to_guest() == MAP_TO_GUEST_ON_BAD_UID ) {
1864 make_server_info_guest(server_info);
1865 return NT_STATUS_OK;
1866 }
1867 return nt_status;
1868 }
1869
1870 if (!pdb_set_nt_username(sam_account, nt_username, PDB_CHANGED)) {
1871 TALLOC_FREE(sam_account);
1872 return NT_STATUS_NO_MEMORY;
1873 }
1874
1875 if (!pdb_set_username(sam_account, nt_username, PDB_CHANGED)) {
1876 TALLOC_FREE(sam_account);
1877 return NT_STATUS_NO_MEMORY;
1878 }
1879
1880 if (!pdb_set_domain(sam_account, nt_domain, PDB_CHANGED)) {
1881 TALLOC_FREE(sam_account);
1882 return NT_STATUS_NO_MEMORY;
1883 }
1884
1885 if (!pdb_set_user_sid(sam_account, &user_sid, PDB_CHANGED)) {
1886 TALLOC_FREE(sam_account);
1887 return NT_STATUS_UNSUCCESSFUL;
1888 }
1889
1890 if (!pdb_set_group_sid(sam_account, &group_sid, PDB_CHANGED)) {
1891 TALLOC_FREE(sam_account);
1892 return NT_STATUS_UNSUCCESSFUL;
1893 }
1894
1895 if (!pdb_set_fullname(sam_account,
1896 unistr2_static(&(info3->uni_full_name)),
1897 PDB_CHANGED)) {
1898 TALLOC_FREE(sam_account);
1899 return NT_STATUS_NO_MEMORY;
1900 }
1901
1902 if (!pdb_set_logon_script(sam_account,
1903 unistr2_static(&(info3->uni_logon_script)),
1904 PDB_CHANGED)) {
1905 TALLOC_FREE(sam_account);
1906 return NT_STATUS_NO_MEMORY;
1907 }
1908
1909 if (!pdb_set_profile_path(sam_account,
1910 unistr2_static(&(info3->uni_profile_path)),
1911 PDB_CHANGED)) {
1912 TALLOC_FREE(sam_account);
1913 return NT_STATUS_NO_MEMORY;
1914 }
1915
1916 if (!pdb_set_homedir(sam_account,
1917 unistr2_static(&(info3->uni_home_dir)),
1918 PDB_CHANGED)) {
1919 TALLOC_FREE(sam_account);
1920 return NT_STATUS_NO_MEMORY;
1921 }
1922
1923 if (!pdb_set_dir_drive(sam_account,
1924 unistr2_static(&(info3->uni_dir_drive)),
1925 PDB_CHANGED)) {
1926 TALLOC_FREE(sam_account);
1927 return NT_STATUS_NO_MEMORY;
1928 }
1929
1930 if (!pdb_set_acct_ctrl(sam_account, info3->acct_flags, PDB_CHANGED)) {
1931 TALLOC_FREE(sam_account);
1932 return NT_STATUS_NO_MEMORY;
1933 }
1934
1935 if (!pdb_set_pass_last_set_time(
1936 sam_account,
1937 nt_time_to_unix(info3->pass_last_set_time),
1938 PDB_CHANGED)) {
1939 TALLOC_FREE(sam_account);
1940 return NT_STATUS_NO_MEMORY;
1941 }
1942
1943 if (!pdb_set_pass_can_change_time(
1944 sam_account,
1945 nt_time_to_unix(info3->pass_can_change_time),
1946 PDB_CHANGED)) {
1947 TALLOC_FREE(sam_account);
1948 return NT_STATUS_NO_MEMORY;
1949 }
1950
1951 if (!pdb_set_pass_must_change_time(
1952 sam_account,
1953 nt_time_to_unix(info3->pass_must_change_time),
1954 PDB_CHANGED)) {
1955 TALLOC_FREE(sam_account);
1956 return NT_STATUS_NO_MEMORY;
1957 }
1958
1959 result = make_server_info(NULL);
1960 if (result == NULL) {
1961 DEBUG(4, ("make_server_info failed!\n"));
1962 TALLOC_FREE(sam_account);
1963 return NT_STATUS_NO_MEMORY;
1964 }
1965
1966 /* save this here to _net_sam_logon() doesn't fail (it assumes a
1967 valid struct samu) */
1968
1969 result->sam_account = sam_account;
1970 result->unix_name = talloc_strdup(result, found_username);
1971
1972 /* Fill in the unix info we found on the way */
1973
1974 result->uid = uid;
1975 result->gid = gid;
1976
1977 /* Create a 'combined' list of all SIDs we might want in the SD */
1978
1979 result->num_sids = 0;
1980 result->sids = NULL;
1981
1982 /* and create (by appending rids) the 'domain' sids */
1983
1984 for (i = 0; i < info3->num_groups2; i++) {
1985 DOM_SID sid;
1986 if (!sid_compose(&sid, &info3->dom_sid.sid,
1987 info3->gids[i].g_rid)) {
1988 DEBUG(3,("could not append additional group rid "
1989 "0x%x\n", info3->gids[i].g_rid));
1990 TALLOC_FREE(result);
1991 return NT_STATUS_INVALID_PARAMETER;
1992 }
1993 if (!add_sid_to_array(result, &sid, &result->sids,
1994 &result->num_sids)) {
1995 TALLOC_FREE(result);
1996 return NT_STATUS_NO_MEMORY;
1997 }
1998 }
1999
2000 /* Copy 'other' sids. We need to do sid filtering here to
2001 prevent possible elevation of privileges. See:
2002
2003 http://www.microsoft.com/windows2000/techinfo/administration/security/sidfilter.asp
2004 */
2005
2006 for (i = 0; i < info3->num_other_sids; i++) {
2007 if (!add_sid_to_array(result, &info3->other_sids[i].sid,
2008 &result->sids,
2009 &result->num_sids)) {
2010 TALLOC_FREE(result);
2011 return NT_STATUS_NO_MEMORY;
2012 }
2013 }
2014
2015 result->login_server = unistr2_tdup(result,
2016 &(info3->uni_logon_srv));
2017
2018 /* ensure we are never given NULL session keys */
2019
2020 if (memcmp(info3->user_sess_key, zeros, sizeof(zeros)) == 0) {
2021 result->user_session_key = data_blob(NULL, 0);
2022 } else {
2023 result->user_session_key = data_blob_talloc(
2024 result, info3->user_sess_key,
2025 sizeof(info3->user_sess_key));
2026 }
2027
2028 if (memcmp(info3->lm_sess_key, zeros, 8) == 0) {
2029 result->lm_session_key = data_blob(NULL, 0);
2030 } else {
2031 result->lm_session_key = data_blob_talloc(
2032 result, info3->lm_sess_key,
2033 sizeof(info3->lm_sess_key));
2034 }
2035
2036 result->was_mapped = username_was_mapped;
2037
2038 *server_info = result;
2039
2040 return NT_STATUS_OK;
2041 }
2042
2043 /***************************************************************************
2044 Free a user_info struct
2045 ***************************************************************************/
2046
2047 void free_user_info(auth_usersupplied_info **user_info)
2048 {
2049 DEBUG(5,("attempting to free (and zero) a user_info structure\n"));
2050 if (*user_info != NULL) {
2051 if ((*user_info)->smb_name) {
2052 DEBUG(10,("structure was created for %s\n",
2053 (*user_info)->smb_name));
2054 }
2055 SAFE_FREE((*user_info)->smb_name);
2056 SAFE_FREE((*user_info)->internal_username);
2057 SAFE_FREE((*user_info)->client_domain);
2058 SAFE_FREE((*user_info)->domain);
2059 SAFE_FREE((*user_info)->wksta_name);
2060 data_blob_free(&(*user_info)->lm_resp);
2061 data_blob_free(&(*user_info)->nt_resp);
2062 data_blob_clear_free(&(*user_info)->lm_interactive_pwd);
2063 data_blob_clear_free(&(*user_info)->nt_interactive_pwd);
2064 data_blob_clear_free(&(*user_info)->plaintext_password);
2065 ZERO_STRUCT(**user_info);
2066 }
2067 SAFE_FREE(*user_info);
2068 }
2069
2070 /***************************************************************************
2071 Make an auth_methods struct
2072 ***************************************************************************/
2073
2074 BOOL make_auth_methods(struct auth_context *auth_context, auth_methods **auth_method)
2075 {
2076 if (!auth_context) {
2077 smb_panic("no auth_context supplied to "
2078 "make_auth_methods()!\n");
2079 }
2080
2081 if (!auth_method) {
2082 smb_panic("make_auth_methods: pointer to auth_method pointer "
2083 "is NULL!\n");
2084 }
2085
2086 *auth_method = TALLOC_P(auth_context->mem_ctx, auth_methods);
2087 if (!*auth_method) {
2088 DEBUG(0,("make_auth_method: malloc failed!\n"));
2089 return False;
2090 }
2091 ZERO_STRUCTP(*auth_method);
2092
2093 return True;
2094 }
2095
2096 /****************************************************************************
2097 Duplicate a SID token.
2098 ****************************************************************************/
2099
2100 NT_USER_TOKEN *dup_nt_token(TALLOC_CTX *mem_ctx, const NT_USER_TOKEN *ptoken)
2101 {
2102 NT_USER_TOKEN *token;
2103
2104 if (!ptoken)
2105 return NULL;
2106
2107 token = TALLOC_P(mem_ctx, NT_USER_TOKEN);
2108 if (token == NULL) {
2109 DEBUG(0, ("talloc failed\n"));
2110 return NULL;
2111 }
2112
2113 ZERO_STRUCTP(token);
2114
2115 if (ptoken->user_sids && ptoken->num_sids) {
2116 token->user_sids = (DOM_SID *)TALLOC_MEMDUP(
2117 token, ptoken->user_sids, sizeof(DOM_SID) * ptoken->num_sids );
2118
2119 if (token->user_sids == NULL) {
2120 DEBUG(0, ("TALLOC_MEMDUP failed\n"));
2121 TALLOC_FREE(token);
2122 return NULL;
2123 }
2124 token->num_sids = ptoken->num_sids;
2125 }
2126
2127 /* copy the privileges; don't consider failure to be critical here */
2128
2129 if ( !se_priv_copy( &token->privileges, &ptoken->privileges ) ) {
2130 DEBUG(0,("dup_nt_token: Failure to copy SE_PRIV!. "
2131 "Continuing with 0 privileges assigned.\n"));
2132 }
2133
2134 return token;
2135 }
2136
2137 /****************************************************************************
2138 Check for a SID in an NT_USER_TOKEN
2139 ****************************************************************************/
2140
2141 BOOL nt_token_check_sid ( const DOM_SID *sid, const NT_USER_TOKEN *token )
2142 {
2143 int i;
2144
2145 if ( !sid || !token )
2146 return False;
2147
2148 for ( i=0; i<token->num_sids; i++ ) {
2149 if ( sid_equal( sid, &token->user_sids[i] ) )
2150 return True;
2151 }
2152
2153 return False;
2154 }
2155
2156 BOOL nt_token_check_domain_rid( NT_USER_TOKEN *token, uint32 rid )
2157 {
2158 DOM_SID domain_sid;
2159
2160 /* if we are a domain member, the get the domain SID, else for
2161 a DC or standalone server, use our own SID */
2162
2163 if ( lp_server_role() == ROLE_DOMAIN_MEMBER ) {
2164 if ( !secrets_fetch_domain_sid( lp_workgroup(),
2165 &domain_sid ) ) {
2166 DEBUG(1,("nt_token_check_domain_rid: Cannot lookup "
2167 "SID for domain [%s]\n", lp_workgroup()));
2168 return False;
2169 }
2170 }
2171 else
2172 sid_copy( &domain_sid, get_global_sam_sid() );
2173
2174 sid_append_rid( &domain_sid, rid );
2175
2176 return nt_token_check_sid( &domain_sid, token );\
2177 }
2178
2179 /**
2180 * Verify whether or not given domain is trusted.
2181 *
2182 * @param domain_name name of the domain to be verified
2183 * @return true if domain is one of the trusted once or
2184 * false if otherwise
2185 **/
2186
2187 BOOL is_trusted_domain(const char* dom_name)
2188 {
2189 DOM_SID trustdom_sid;
2190 BOOL ret;
2191
2192 /* no trusted domains for a standalone server */
2193
2194 if ( lp_server_role() == ROLE_STANDALONE )
2195 return False;
2196
2197 /* if we are a DC, then check for a direct trust relationships */
2198
2199 if ( IS_DC ) {
2200 become_root();
2201 DEBUG (5,("is_trusted_domain: Checking for domain trust with "
2202 "[%s]\n", dom_name ));
2203 ret = secrets_fetch_trusted_domain_password(dom_name, NULL,
2204 NULL, NULL);
2205 unbecome_root();
2206 if (ret)
2207 return True;
2208 }
2209 else {
2210 NSS_STATUS result;
2211
2212 /* If winbind is around, ask it */
2213
2214 result = wb_is_trusted_domain(dom_name);
2215
2216 if (result == NSS_STATUS_SUCCESS) {
2217 return True;
2218 }
2219
2220 if (result == NSS_STATUS_NOTFOUND) {
2221 /* winbind could not find the domain */
2222 return False;
2223 }
2224
2225 /* The only other possible result is that winbind is not up
2226 and running. We need to update the trustdom_cache
2227 ourselves */
2228
2229 update_trustdom_cache();
2230 }
2231
2232 /* now the trustdom cache should be available a DC could still
2233 * have a transitive trust so fall back to the cache of trusted
2234 * domains (like a domain member would use */
2235
2236 if ( trustdom_cache_fetch(dom_name, &trustdom_sid) ) {
2237 return True;
2238 }
2239
2240 return False;
2241 }
2242
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