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Fix flags in caller of lookup_name() in create_builtin_administrators().
[Samba.git] / source / auth / auth_util.c
blobb3a3d3992420196752c9b2acb30a657e69d5d8a4
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, LOOKUP_NAME_DOMAIN, 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 unbecome_root();
960 TALLOC_FREE(result);
961 return NULL;
962 }
963
964 /* Finally the builtin ones */
965
966 status = add_aliases(&global_sid_Builtin, result);
967
968 if (!NT_STATUS_IS_OK(status)) {
969 unbecome_root();
970 TALLOC_FREE(result);
971 return NULL;
972 }
973
974 unbecome_root();
975 }
976
977
978 get_privileges_for_sids(&result->privileges, result->user_sids,
979 result->num_sids);
980 return result;
981 }
982
983 /*
984 * Create the token to use from server_info->sam_account and
985 * server_info->sids (the info3/sam groups). Find the unix gids.
986 */
987
988 NTSTATUS create_local_token(auth_serversupplied_info *server_info)
989 {
990 TALLOC_CTX *mem_ctx;
991 NTSTATUS status;
992 size_t i;
993
994
995 mem_ctx = talloc_new(NULL);
996 if (mem_ctx == NULL) {
997 DEBUG(0, ("talloc_new failed\n"));
998 return NT_STATUS_NO_MEMORY;
999 }
1000
1001 /*
1002 * If winbind is not around, we can not make much use of the SIDs the
1003 * domain controller provided us with. Likewise if the user name was
1004 * mapped to some local unix user.
1005 */
1006
1007 if (((lp_server_role() == ROLE_DOMAIN_MEMBER) && !winbind_ping()) ||
1008 (server_info->was_mapped)) {
1009 status = create_token_from_username(server_info,
1010 server_info->unix_name,
1011 server_info->guest,
1012 &server_info->uid,
1013 &server_info->gid,
1014 &server_info->unix_name,
1015 &server_info->ptok);
1016
1017 } else {
1018 server_info->ptok = create_local_nt_token(
1019 server_info,
1020 pdb_get_user_sid(server_info->sam_account),
1021 server_info->guest,
1022 server_info->num_sids, server_info->sids);
1023 status = server_info->ptok ?
1024 NT_STATUS_OK : NT_STATUS_NO_SUCH_USER;
1025 }
1026
1027 if (!NT_STATUS_IS_OK(status)) {
1028 TALLOC_FREE(mem_ctx);
1029 return status;
1030 }
1031
1032 /* Convert the SIDs to gids. */
1033
1034 server_info->n_groups = 0;
1035 server_info->groups = NULL;
1036
1037 /* Start at index 1, where the groups start. */
1038
1039 for (i=1; i<server_info->ptok->num_sids; i++) {
1040 gid_t gid;
1041 DOM_SID *sid = &server_info->ptok->user_sids[i];
1042
1043 if (!sid_to_gid(sid, &gid)) {
1044 DEBUG(10, ("Could not convert SID %s to gid, "
1045 "ignoring it\n", sid_string_static(sid)));
1046 continue;
1047 }
1048 add_gid_to_array_unique(server_info, gid, &server_info->groups,
1049 &server_info->n_groups);
1050 }
1051
1052 debug_nt_user_token(DBGC_AUTH, 10, server_info->ptok);
1053
1054 status = log_nt_token(mem_ctx, server_info->ptok);
1055
1056 TALLOC_FREE(mem_ctx);
1057 return status;
1058 }
1059
1060 /*
1061 * Create an artificial NT token given just a username. (Initially indended
1062 * for force user)
1063 *
1064 * We go through lookup_name() to avoid problems we had with 'winbind use
1065 * default domain'.
1066 *
1067 * We have 3 cases:
1068 *
1069 * unmapped unix users: Go directly to nss to find the user's group.
1070 *
1071 * A passdb user: The list of groups is provided by pdb_enum_group_memberships.
1072 *
1073 * If the user is provided by winbind, the primary gid is set to "domain
1074 * users" of the user's domain. For an explanation why this is necessary, see
1075 * the thread starting at
1076 * http://lists.samba.org/archive/samba-technical/2006-January/044803.html.
1077 */
1078
1079 NTSTATUS create_token_from_username(TALLOC_CTX *mem_ctx, const char *username,
1080 BOOL is_guest,
1081 uid_t *uid, gid_t *gid,
1082 char **found_username,
1083 struct nt_user_token **token)
1084 {
1085 NTSTATUS result = NT_STATUS_NO_SUCH_USER;
1086 TALLOC_CTX *tmp_ctx;
1087 DOM_SID user_sid;
1088 enum lsa_SidType type;
1089 gid_t *gids;
1090 DOM_SID *group_sids;
1091 DOM_SID unix_group_sid;
1092 size_t num_group_sids;
1093 size_t num_gids;
1094 size_t i;
1095
1096 tmp_ctx = talloc_new(NULL);
1097 if (tmp_ctx == NULL) {
1098 DEBUG(0, ("talloc_new failed\n"));
1099 return NT_STATUS_NO_MEMORY;
1100 }
1101
1102 if (!lookup_name_smbconf(tmp_ctx, username, LOOKUP_NAME_ALL,
1103 NULL, NULL, &user_sid, &type)) {
1104 DEBUG(1, ("lookup_name_smbconf for %s failed\n", username));
1105 goto done;
1106 }
1107
1108 if (type != SID_NAME_USER) {
1109 DEBUG(1, ("%s is a %s, not a user\n", username,
1110 sid_type_lookup(type)));
1111 goto done;
1112 }
1113
1114 if (!sid_to_uid(&user_sid, uid)) {
1115 DEBUG(1, ("sid_to_uid for %s (%s) failed\n",
1116 username, sid_string_static(&user_sid)));
1117 goto done;
1118 }
1119
1120 if (sid_check_is_in_our_domain(&user_sid)) {
1121 BOOL ret;
1122
1123 /* This is a passdb user, so ask passdb */
1124
1125 struct samu *sam_acct = NULL;
1126
1127 if ( !(sam_acct = samu_new( tmp_ctx )) ) {
1128 result = NT_STATUS_NO_MEMORY;
1129 goto done;
1130 }
1131
1132 become_root();
1133 ret = pdb_getsampwsid(sam_acct, &user_sid);
1134 unbecome_root();
1135
1136 if (!ret) {
1137 DEBUG(1, ("pdb_getsampwsid(%s) for user %s failed\n",
1138 sid_string_static(&user_sid), username));
1139 DEBUGADD(1, ("Fall back to unix user %s\n", username));
1140 goto unix_user;
1141 }
1142
1143 result = pdb_enum_group_memberships(tmp_ctx, sam_acct,
1144 &group_sids, &gids,
1145 &num_group_sids);
1146 if (!NT_STATUS_IS_OK(result)) {
1147 DEBUG(10, ("enum_group_memberships failed for %s\n",
1148 username));
1149 DEBUGADD(1, ("Fall back to unix user %s\n", username));
1150 goto unix_user;
1151 }
1152
1153 /* see the smb_panic() in pdb_default_enum_group_memberships */
1154 SMB_ASSERT(num_group_sids > 0);
1155
1156 *gid = gids[0];
1157
1158 /* Ensure we're returning the found_username on the right context. */
1159 *found_username = talloc_strdup(mem_ctx,
1160 pdb_get_username(sam_acct));
1161
1162 } else if (sid_check_is_in_unix_users(&user_sid)) {
1163
1164 /* This is a unix user not in passdb. We need to ask nss
1165 * directly, without consulting passdb */
1166
1167 struct passwd *pass;
1168
1169 /*
1170 * This goto target is used as a fallback for the passdb
1171 * case. The concrete bug report is when passdb gave us an
1172 * unmapped gid.
1173 */
1174
1175 unix_user:
1176
1177 uid_to_unix_users_sid(*uid, &user_sid);
1178
1179 pass = getpwuid_alloc(tmp_ctx, *uid);
1180 if (pass == NULL) {
1181 DEBUG(1, ("getpwuid(%d) for user %s failed\n",
1182 *uid, username));
1183 goto done;
1184 }
1185
1186 if (!getgroups_unix_user(tmp_ctx, username, pass->pw_gid,
1187 &gids, &num_group_sids)) {
1188 DEBUG(1, ("getgroups_unix_user for user %s failed\n",
1189 username));
1190 goto done;
1191 }
1192
1193 if (num_group_sids) {
1194 group_sids = TALLOC_ARRAY(tmp_ctx, DOM_SID, num_group_sids);
1195 if (group_sids == NULL) {
1196 DEBUG(1, ("TALLOC_ARRAY failed\n"));
1197 result = NT_STATUS_NO_MEMORY;
1198 goto done;
1199 }
1200 } else {
1201 group_sids = NULL;
1202 }
1203
1204 for (i=0; i<num_group_sids; i++) {
1205 gid_to_sid(&group_sids[i], gids[i]);
1206 }
1207
1208 /* In getgroups_unix_user we always set the primary gid */
1209 SMB_ASSERT(num_group_sids > 0);
1210
1211 *gid = gids[0];
1212
1213 /* Ensure we're returning the found_username on the right context. */
1214 *found_username = talloc_strdup(mem_ctx, pass->pw_name);
1215 } else {
1216
1217 /* This user is from winbind, force the primary gid to the
1218 * user's "domain users" group. Under certain circumstances
1219 * (user comes from NT4), this might be a loss of
1220 * information. But we can not rely on winbind getting the
1221 * correct info. AD might prohibit winbind looking up that
1222 * information. */
1223
1224 uint32 dummy;
1225
1226 num_group_sids = 1;
1227 group_sids = TALLOC_ARRAY(tmp_ctx, DOM_SID, num_group_sids);
1228 if (group_sids == NULL) {
1229 DEBUG(1, ("TALLOC_ARRAY failed\n"));
1230 result = NT_STATUS_NO_MEMORY;
1231 goto done;
1232 }
1233
1234 sid_copy(&group_sids[0], &user_sid);
1235 sid_split_rid(&group_sids[0], &dummy);
1236 sid_append_rid(&group_sids[0], DOMAIN_GROUP_RID_USERS);
1237
1238 if (!sid_to_gid(&group_sids[0], gid)) {
1239 DEBUG(1, ("sid_to_gid(%s) failed\n",
1240 sid_string_static(&group_sids[0])));
1241 goto done;
1242 }
1243
1244 gids = gid;
1245
1246 /* Ensure we're returning the found_username on the right context. */
1247 *found_username = talloc_strdup(mem_ctx, username);
1248 }
1249
1250 /* Add the "Unix Group" SID for each gid to catch mapped groups
1251 and their Unix equivalent. This is to solve the backwards
1252 compatibility problem of 'valid users = +ntadmin' where
1253 ntadmin has been paired with "Domain Admins" in the group
1254 mapping table. Otherwise smb.conf would need to be changed
1255 to 'valid user = "Domain Admins"'. --jerry */
1256
1257 num_gids = num_group_sids;
1258 for ( i=0; i<num_gids; i++ ) {
1259 gid_t high, low;
1260
1261 /* don't pickup anything managed by Winbind */
1262
1263 if ( lp_idmap_gid(&low, &high) && (gids[i] >= low) && (gids[i] <= high) )
1264 continue;
1265
1266 if ( !gid_to_unix_groups_sid( gids[i], &unix_group_sid ) ) {
1267 DEBUG(1,("create_token_from_username: Failed to create SID "
1268 "for gid %d!\n", gids[i]));
1269 continue;
1270 }
1271 if (!add_sid_to_array_unique(tmp_ctx, &unix_group_sid,
1272 &group_sids, &num_group_sids )) {
1273 result = NT_STATUS_NO_MEMORY;
1274 goto done;
1275 }
1276 }
1277
1278 /* Ensure we're creating the nt_token on the right context. */
1279 *token = create_local_nt_token(mem_ctx, &user_sid,
1280 is_guest, num_group_sids, group_sids);
1281
1282 if ((*token == NULL) || (*found_username == NULL)) {
1283 result = NT_STATUS_NO_MEMORY;
1284 goto done;
1285 }
1286
1287 result = NT_STATUS_OK;
1288 done:
1289 TALLOC_FREE(tmp_ctx);
1290 return result;
1291 }
1292
1293 /***************************************************************************
1294 Build upon create_token_from_username:
1295
1296 Expensive helper function to figure out whether a user given its name is
1297 member of a particular group.
1298 ***************************************************************************/
1299
1300 BOOL user_in_group_sid(const char *username, const DOM_SID *group_sid)
1301 {
1302 NTSTATUS status;
1303 uid_t uid;
1304 gid_t gid;
1305 char *found_username;
1306 struct nt_user_token *token;
1307 BOOL result;
1308
1309 TALLOC_CTX *mem_ctx;
1310
1311 mem_ctx = talloc_new(NULL);
1312 if (mem_ctx == NULL) {
1313 DEBUG(0, ("talloc_new failed\n"));
1314 return False;
1315 }
1316
1317 status = create_token_from_username(mem_ctx, username, False,
1318 &uid, &gid, &found_username,
1319 &token);
1320
1321 if (!NT_STATUS_IS_OK(status)) {
1322 DEBUG(10, ("could not create token for %s\n", username));
1323 return False;
1324 }
1325
1326 result = nt_token_check_sid(group_sid, token);
1327
1328 TALLOC_FREE(mem_ctx);
1329 return result;
1330
1331 }
1332
1333 BOOL user_in_group(const char *username, const char *groupname)
1334 {
1335 TALLOC_CTX *mem_ctx;
1336 DOM_SID group_sid;
1337 BOOL ret;
1338
1339 mem_ctx = talloc_new(NULL);
1340 if (mem_ctx == NULL) {
1341 DEBUG(0, ("talloc_new failed\n"));
1342 return False;
1343 }
1344
1345 ret = lookup_name(mem_ctx, groupname, LOOKUP_NAME_ALL,
1346 NULL, NULL, &group_sid, NULL);
1347 TALLOC_FREE(mem_ctx);
1348
1349 if (!ret) {
1350 DEBUG(10, ("lookup_name for (%s) failed.\n", groupname));
1351 return False;
1352 }
1353
1354 return user_in_group_sid(username, &group_sid);
1355 }
1356
1357
1358 /***************************************************************************
1359 Make (and fill) a user_info struct from a 'struct passwd' by conversion
1360 to a struct samu
1361 ***************************************************************************/
1362
1363 NTSTATUS make_server_info_pw(auth_serversupplied_info **server_info,
1364 char *unix_username,
1365 struct passwd *pwd)
1366 {
1367 NTSTATUS status;
1368 struct samu *sampass = NULL;
1369 gid_t *gids;
1370 char *qualified_name = NULL;
1371 TALLOC_CTX *mem_ctx = NULL;
1372 DOM_SID u_sid;
1373 enum lsa_SidType type;
1374 auth_serversupplied_info *result;
1375
1376 if ( !(sampass = samu_new( NULL )) ) {
1377 return NT_STATUS_NO_MEMORY;
1378 }
1379
1380 status = samu_set_unix( sampass, pwd );
1381 if (!NT_STATUS_IS_OK(status)) {
1382 return status;
1383 }
1384
1385 result = make_server_info(NULL);
1386 if (result == NULL) {
1387 TALLOC_FREE(sampass);
1388 return NT_STATUS_NO_MEMORY;
1389 }
1390
1391 result->sam_account = sampass;
1392 result->unix_name = talloc_strdup(result, unix_username);
1393 result->uid = pwd->pw_uid;
1394 result->gid = pwd->pw_gid;
1395
1396 status = pdb_enum_group_memberships(result, sampass,
1397 &result->sids, &gids,
1398 &result->num_sids);
1399
1400 if (!NT_STATUS_IS_OK(status)) {
1401 DEBUG(10, ("pdb_enum_group_memberships failed: %s\n",
1402 nt_errstr(status)));
1403 TALLOC_FREE(result);
1404 return status;
1405 }
1406
1407 /*
1408 * The SID returned in server_info->sam_account is based
1409 * on our SAM sid even though for a pure UNIX account this should
1410 * not be the case as it doesn't really exist in the SAM db.
1411 * This causes lookups on "[in]valid users" to fail as they
1412 * will lookup this name as a "Unix User" SID to check against
1413 * the user token. Fix this by adding the "Unix User"\unix_username
1414 * SID to the sid array. The correct fix should probably be
1415 * changing the server_info->sam_account user SID to be a
1416 * S-1-22 Unix SID, but this might break old configs where
1417 * plaintext passwords were used with no SAM backend.
1418 */
1419
1420 mem_ctx = talloc_init("make_server_info_pw_tmp");
1421 if (!mem_ctx) {
1422 TALLOC_FREE(result);
1423 return NT_STATUS_NO_MEMORY;
1424 }
1425
1426 qualified_name = talloc_asprintf(mem_ctx, "%s\\%s",
1427 unix_users_domain_name(),
1428 unix_username );
1429 if (!qualified_name) {
1430 TALLOC_FREE(result);
1431 TALLOC_FREE(mem_ctx);
1432 return NT_STATUS_NO_MEMORY;
1433 }
1434
1435 if (!lookup_name(mem_ctx, qualified_name, LOOKUP_NAME_ALL,
1436 NULL, NULL,
1437 &u_sid, &type)) {
1438 TALLOC_FREE(result);
1439 TALLOC_FREE(mem_ctx);
1440 return NT_STATUS_NO_SUCH_USER;
1441 }
1442
1443 TALLOC_FREE(mem_ctx);
1444
1445 if (type != SID_NAME_USER) {
1446 TALLOC_FREE(result);
1447 return NT_STATUS_NO_SUCH_USER;
1448 }
1449
1450 if (!add_sid_to_array_unique(result, &u_sid,
1451 &result->sids,
1452 &result->num_sids)) {
1453 TALLOC_FREE(result);
1454 return NT_STATUS_NO_MEMORY;
1455 }
1456
1457 /* For now we throw away the gids and convert via sid_to_gid
1458 * later. This needs fixing, but I'd like to get the code straight and
1459 * simple first. */
1460 TALLOC_FREE(gids);
1461
1462 *server_info = result;
1463
1464 return NT_STATUS_OK;
1465 }
1466
1467 /***************************************************************************
1468 Make (and fill) a user_info struct for a guest login.
1469 This *must* succeed for smbd to start. If there is no mapping entry for
1470 the guest gid, then create one.
1471 ***************************************************************************/
1472
1473 static NTSTATUS make_new_server_info_guest(auth_serversupplied_info **server_info)
1474 {
1475 NTSTATUS status;
1476 struct samu *sampass = NULL;
1477 DOM_SID guest_sid;
1478 BOOL ret;
1479 static const char zeros[16] = { 0, };
1480
1481 if ( !(sampass = samu_new( NULL )) ) {
1482 return NT_STATUS_NO_MEMORY;
1483 }
1484
1485 sid_copy(&guest_sid, get_global_sam_sid());
1486 sid_append_rid(&guest_sid, DOMAIN_USER_RID_GUEST);
1487
1488 become_root();
1489 ret = pdb_getsampwsid(sampass, &guest_sid);
1490 unbecome_root();
1491
1492 if (!ret) {
1493 TALLOC_FREE(sampass);
1494 return NT_STATUS_NO_SUCH_USER;
1495 }
1496
1497 status = make_server_info_sam(server_info, sampass);
1498 if (!NT_STATUS_IS_OK(status)) {
1499 TALLOC_FREE(sampass);
1500 return status;
1501 }
1502
1503 (*server_info)->guest = True;
1504
1505 status = create_local_token(*server_info);
1506 if (!NT_STATUS_IS_OK(status)) {
1507 DEBUG(10, ("create_local_token failed: %s\n",
1508 nt_errstr(status)));
1509 return status;
1510 }
1511
1512 /* annoying, but the Guest really does have a session key, and it is
1513 all zeros! */
1514 (*server_info)->user_session_key = data_blob(zeros, sizeof(zeros));
1515 (*server_info)->lm_session_key = data_blob(zeros, sizeof(zeros));
1516
1517 return NT_STATUS_OK;
1518 }
1519
1520 static auth_serversupplied_info *copy_serverinfo(auth_serversupplied_info *src)
1521 {
1522 auth_serversupplied_info *dst;
1523
1524 dst = make_server_info(NULL);
1525 if (dst == NULL) {
1526 return NULL;
1527 }
1528
1529 dst->guest = src->guest;
1530 dst->uid = src->uid;
1531 dst->gid = src->gid;
1532 dst->n_groups = src->n_groups;
1533 if (src->n_groups != 0) {
1534 dst->groups = (gid_t *)TALLOC_MEMDUP(
1535 dst, src->groups, sizeof(gid_t)*dst->n_groups);
1536 } else {
1537 dst->groups = NULL;
1538 }
1539
1540 if (src->ptok) {
1541 dst->ptok = dup_nt_token(dst, src->ptok);
1542 if (!dst->ptok) {
1543 TALLOC_FREE(dst);
1544 return NULL;
1545 }
1546 }
1547
1548 dst->user_session_key = data_blob_talloc( dst, src->user_session_key.data,
1549 src->user_session_key.length);
1550
1551 dst->lm_session_key = data_blob_talloc(dst, src->lm_session_key.data,
1552 src->lm_session_key.length);
1553
1554 dst->sam_account = samu_new(NULL);
1555 if (!dst->sam_account) {
1556 TALLOC_FREE(dst);
1557 return NULL;
1558 }
1559
1560 if (!pdb_copy_sam_account(dst->sam_account, src->sam_account)) {
1561 TALLOC_FREE(dst);
1562 return NULL;
1563 }
1564
1565 dst->pam_handle = NULL;
1566 dst->unix_name = talloc_strdup(dst, src->unix_name);
1567 if (!dst->unix_name) {
1568 TALLOC_FREE(dst);
1569 return NULL;
1570 }
1571
1572 return dst;
1573 }
1574
1575 static auth_serversupplied_info *guest_info = NULL;
1576
1577 BOOL init_guest_info(void)
1578 {
1579 if (guest_info != NULL)
1580 return True;
1581
1582 return NT_STATUS_IS_OK(make_new_server_info_guest(&guest_info));
1583 }
1584
1585 NTSTATUS make_server_info_guest(auth_serversupplied_info **server_info)
1586 {
1587 *server_info = copy_serverinfo(guest_info);
1588 return (*server_info != NULL) ? NT_STATUS_OK : NT_STATUS_NO_MEMORY;
1589 }
1590
1591 BOOL copy_current_user(struct current_user *dst, struct current_user *src)
1592 {
1593 gid_t *groups;
1594 NT_USER_TOKEN *nt_token;
1595
1596 groups = (gid_t *)memdup(src->ut.groups,
1597 sizeof(gid_t) * src->ut.ngroups);
1598 if ((src->ut.ngroups != 0) && (groups == NULL)) {
1599 return False;
1600 }
1601
1602 nt_token = dup_nt_token(NULL, src->nt_user_token);
1603 if (nt_token == NULL) {
1604 SAFE_FREE(groups);
1605 return False;
1606 }
1607
1608 dst->conn = src->conn;
1609 dst->vuid = src->vuid;
1610 dst->ut.uid = src->ut.uid;
1611 dst->ut.gid = src->ut.gid;
1612 dst->ut.ngroups = src->ut.ngroups;
1613 dst->ut.groups = groups;
1614 dst->nt_user_token = nt_token;
1615 return True;
1616 }
1617
1618 BOOL set_current_user_guest(struct current_user *dst)
1619 {
1620 gid_t *groups;
1621 NT_USER_TOKEN *nt_token;
1622
1623 groups = (gid_t *)memdup(guest_info->groups,
1624 sizeof(gid_t) * guest_info->n_groups);
1625 if (groups == NULL) {
1626 return False;
1627 }
1628
1629 nt_token = dup_nt_token(NULL, guest_info->ptok);
1630 if (nt_token == NULL) {
1631 SAFE_FREE(groups);
1632 return False;
1633 }
1634
1635 TALLOC_FREE(dst->nt_user_token);
1636 SAFE_FREE(dst->ut.groups);
1637
1638 /* dst->conn is never really dereferenced, it's only tested for
1639 * equality in uid.c */
1640 dst->conn = NULL;
1641
1642 dst->vuid = UID_FIELD_INVALID;
1643 dst->ut.uid = guest_info->uid;
1644 dst->ut.gid = guest_info->gid;
1645 dst->ut.ngroups = guest_info->n_groups;
1646 dst->ut.groups = groups;
1647 dst->nt_user_token = nt_token;
1648 return True;
1649 }
1650
1651 /***************************************************************************
1652 Purely internal function for make_server_info_info3
1653 Fill the sam account from getpwnam
1654 ***************************************************************************/
1655 static NTSTATUS fill_sam_account(TALLOC_CTX *mem_ctx,
1656 const char *domain,
1657 const char *username,
1658 char **found_username,
1659 uid_t *uid, gid_t *gid,
1660 struct samu *account,
1661 BOOL *username_was_mapped)
1662 {
1663 NTSTATUS nt_status;
1664 fstring dom_user, lower_username;
1665 fstring real_username;
1666 struct passwd *passwd;
1667
1668 fstrcpy( lower_username, username );
1669 strlower_m( lower_username );
1670
1671 fstr_sprintf(dom_user, "%s%c%s", domain, *lp_winbind_separator(),
1672 lower_username);
1673
1674 /* Get the passwd struct. Try to create the account is necessary. */
1675
1676 *username_was_mapped = map_username( dom_user );
1677
1678 if ( !(passwd = smb_getpwnam( NULL, dom_user, real_username, True )) )
1679 return NT_STATUS_NO_SUCH_USER;
1680
1681 *uid = passwd->pw_uid;
1682 *gid = passwd->pw_gid;
1683
1684 /* This is pointless -- there is no suport for differing
1685 unix and windows names. Make sure to always store the
1686 one we actually looked up and succeeded. Have I mentioned
1687 why I hate the 'winbind use default domain' parameter?
1688 --jerry */
1689
1690 *found_username = talloc_strdup( mem_ctx, real_username );
1691
1692 DEBUG(5,("fill_sam_account: located username was [%s]\n", *found_username));
1693
1694 nt_status = samu_set_unix( account, passwd );
1695
1696 TALLOC_FREE(passwd);
1697
1698 return nt_status;
1699 }
1700
1701 /****************************************************************************
1702 Wrapper to allow the getpwnam() call to strip the domain name and
1703 try again in case a local UNIX user is already there. Also run through
1704 the username if we fallback to the username only.
1705 ****************************************************************************/
1706
1707 struct passwd *smb_getpwnam( TALLOC_CTX *mem_ctx, char *domuser,
1708 fstring save_username, BOOL create )
1709 {
1710 struct passwd *pw = NULL;
1711 char *p;
1712 fstring username;
1713
1714 /* we only save a copy of the username it has been mangled
1715 by winbindd use default domain */
1716
1717 save_username[0] = '\0';
1718
1719 /* don't call map_username() here since it has to be done higher
1720 up the stack so we don't call it mutliple times */
1721
1722 fstrcpy( username, domuser );
1723
1724 p = strchr_m( username, *lp_winbind_separator() );
1725
1726 /* code for a DOMAIN\user string */
1727
1728 if ( p ) {
1729 fstring strip_username;
1730
1731 pw = Get_Pwnam_alloc( mem_ctx, domuser );
1732 if ( pw ) {
1733 /* make sure we get the case of the username correct */
1734 /* work around 'winbind use default domain = yes' */
1735
1736 if ( !strchr_m( pw->pw_name, *lp_winbind_separator() ) ) {
1737 char *domain;
1738
1739 /* split the domain and username into 2 strings */
1740 *p = '\0';
1741 domain = username;
1742
1743 fstr_sprintf(save_username, "%s%c%s", domain, *lp_winbind_separator(), pw->pw_name);
1744 }
1745 else
1746 fstrcpy( save_username, pw->pw_name );
1747
1748 /* whew -- done! */
1749 return pw;
1750 }
1751
1752 /* setup for lookup of just the username */
1753 /* remember that p and username are overlapping memory */
1754
1755 p++;
1756 fstrcpy( strip_username, p );
1757 fstrcpy( username, strip_username );
1758 }
1759
1760 /* just lookup a plain username */
1761
1762 pw = Get_Pwnam_alloc(mem_ctx, username);
1763
1764 /* Create local user if requested but only if winbindd
1765 is not running. We need to protect against cases
1766 where winbindd is failing and then prematurely
1767 creating users in /etc/passwd */
1768
1769 if ( !pw && create && !winbind_ping() ) {
1770 /* Don't add a machine account. */
1771 if (username[strlen(username)-1] == '$')
1772 return NULL;
1773
1774 smb_create_user(NULL, username, NULL);
1775 pw = Get_Pwnam_alloc(mem_ctx, username);
1776 }
1777
1778 /* one last check for a valid passwd struct */
1779
1780 if ( pw )
1781 fstrcpy( save_username, pw->pw_name );
1782
1783 return pw;
1784 }
1785
1786 /***************************************************************************
1787 Make a server_info struct from the info3 returned by a domain logon
1788 ***************************************************************************/
1789
1790 NTSTATUS make_server_info_info3(TALLOC_CTX *mem_ctx,
1791 const char *sent_nt_username,
1792 const char *domain,
1793 auth_serversupplied_info **server_info,
1794 NET_USER_INFO_3 *info3)
1795 {
1796 static const char zeros[16] = { 0, };
1797
1798 NTSTATUS nt_status = NT_STATUS_OK;
1799 char *found_username;
1800 const char *nt_domain;
1801 const char *nt_username;
1802 struct samu *sam_account = NULL;
1803 DOM_SID user_sid;
1804 DOM_SID group_sid;
1805 BOOL username_was_mapped;
1806
1807 uid_t uid;
1808 gid_t gid;
1809
1810 size_t i;
1811
1812 auth_serversupplied_info *result;
1813
1814 /*
1815 Here is where we should check the list of
1816 trusted domains, and verify that the SID
1817 matches.
1818 */
1819
1820 sid_copy(&user_sid, &info3->dom_sid.sid);
1821 if (!sid_append_rid(&user_sid, info3->user_rid)) {
1822 return NT_STATUS_INVALID_PARAMETER;
1823 }
1824
1825 sid_copy(&group_sid, &info3->dom_sid.sid);
1826 if (!sid_append_rid(&group_sid, info3->group_rid)) {
1827 return NT_STATUS_INVALID_PARAMETER;
1828 }
1829
1830 if (!(nt_username = unistr2_tdup(mem_ctx, &(info3->uni_user_name)))) {
1831 /* If the server didn't give us one, just use the one we sent
1832 * them */
1833 nt_username = sent_nt_username;
1834 }
1835
1836 if (!(nt_domain = unistr2_tdup(mem_ctx, &(info3->uni_logon_dom)))) {
1837 /* If the server didn't give us one, just use the one we sent
1838 * them */
1839 nt_domain = domain;
1840 }
1841
1842 /* try to fill the SAM account.. If getpwnam() fails, then try the
1843 add user script (2.2.x behavior).
1844
1845 We use the _unmapped_ username here in an attempt to provide
1846 consistent username mapping behavior between kerberos and NTLM[SSP]
1847 authentication in domain mode security. I.E. Username mapping
1848 should be applied to the fully qualified username
1849 (e.g. DOMAIN\user) and not just the login name. Yes this means we
1850 called map_username() unnecessarily in make_user_info_map() but
1851 that is how the current code is designed. Making the change here
1852 is the least disruptive place. -- jerry */
1853
1854 if ( !(sam_account = samu_new( NULL )) ) {
1855 return NT_STATUS_NO_MEMORY;
1856 }
1857
1858 /* this call will try to create the user if necessary */
1859
1860 nt_status = fill_sam_account(mem_ctx, nt_domain, sent_nt_username,
1861 &found_username, &uid, &gid, sam_account,
1862 &username_was_mapped);
1863
1864
1865 /* if we still don't have a valid unix account check for
1866 'map to guest = bad uid' */
1867
1868 if (!NT_STATUS_IS_OK(nt_status)) {
1869 TALLOC_FREE( sam_account );
1870 if ( lp_map_to_guest() == MAP_TO_GUEST_ON_BAD_UID ) {
1871 make_server_info_guest(server_info);
1872 return NT_STATUS_OK;
1873 }
1874 return nt_status;
1875 }
1876
1877 if (!pdb_set_nt_username(sam_account, nt_username, PDB_CHANGED)) {
1878 TALLOC_FREE(sam_account);
1879 return NT_STATUS_NO_MEMORY;
1880 }
1881
1882 if (!pdb_set_username(sam_account, nt_username, PDB_CHANGED)) {
1883 TALLOC_FREE(sam_account);
1884 return NT_STATUS_NO_MEMORY;
1885 }
1886
1887 if (!pdb_set_domain(sam_account, nt_domain, PDB_CHANGED)) {
1888 TALLOC_FREE(sam_account);
1889 return NT_STATUS_NO_MEMORY;
1890 }
1891
1892 if (!pdb_set_user_sid(sam_account, &user_sid, PDB_CHANGED)) {
1893 TALLOC_FREE(sam_account);
1894 return NT_STATUS_UNSUCCESSFUL;
1895 }
1896
1897 if (!pdb_set_group_sid(sam_account, &group_sid, PDB_CHANGED)) {
1898 TALLOC_FREE(sam_account);
1899 return NT_STATUS_UNSUCCESSFUL;
1900 }
1901
1902 if (!pdb_set_fullname(sam_account,
1903 unistr2_static(&(info3->uni_full_name)),
1904 PDB_CHANGED)) {
1905 TALLOC_FREE(sam_account);
1906 return NT_STATUS_NO_MEMORY;
1907 }
1908
1909 if (!pdb_set_logon_script(sam_account,
1910 unistr2_static(&(info3->uni_logon_script)),
1911 PDB_CHANGED)) {
1912 TALLOC_FREE(sam_account);
1913 return NT_STATUS_NO_MEMORY;
1914 }
1915
1916 if (!pdb_set_profile_path(sam_account,
1917 unistr2_static(&(info3->uni_profile_path)),
1918 PDB_CHANGED)) {
1919 TALLOC_FREE(sam_account);
1920 return NT_STATUS_NO_MEMORY;
1921 }
1922
1923 if (!pdb_set_homedir(sam_account,
1924 unistr2_static(&(info3->uni_home_dir)),
1925 PDB_CHANGED)) {
1926 TALLOC_FREE(sam_account);
1927 return NT_STATUS_NO_MEMORY;
1928 }
1929
1930 if (!pdb_set_dir_drive(sam_account,
1931 unistr2_static(&(info3->uni_dir_drive)),
1932 PDB_CHANGED)) {
1933 TALLOC_FREE(sam_account);
1934 return NT_STATUS_NO_MEMORY;
1935 }
1936
1937 if (!pdb_set_acct_ctrl(sam_account, info3->acct_flags, PDB_CHANGED)) {
1938 TALLOC_FREE(sam_account);
1939 return NT_STATUS_NO_MEMORY;
1940 }
1941
1942 if (!pdb_set_pass_last_set_time(
1943 sam_account,
1944 nt_time_to_unix(info3->pass_last_set_time),
1945 PDB_CHANGED)) {
1946 TALLOC_FREE(sam_account);
1947 return NT_STATUS_NO_MEMORY;
1948 }
1949
1950 if (!pdb_set_pass_can_change_time(
1951 sam_account,
1952 nt_time_to_unix(info3->pass_can_change_time),
1953 PDB_CHANGED)) {
1954 TALLOC_FREE(sam_account);
1955 return NT_STATUS_NO_MEMORY;
1956 }
1957
1958 if (!pdb_set_pass_must_change_time(
1959 sam_account,
1960 nt_time_to_unix(info3->pass_must_change_time),
1961 PDB_CHANGED)) {
1962 TALLOC_FREE(sam_account);
1963 return NT_STATUS_NO_MEMORY;
1964 }
1965
1966 result = make_server_info(NULL);
1967 if (result == NULL) {
1968 DEBUG(4, ("make_server_info failed!\n"));
1969 TALLOC_FREE(sam_account);
1970 return NT_STATUS_NO_MEMORY;
1971 }
1972
1973 /* save this here to _net_sam_logon() doesn't fail (it assumes a
1974 valid struct samu) */
1975
1976 result->sam_account = sam_account;
1977 result->unix_name = talloc_strdup(result, found_username);
1978
1979 /* Fill in the unix info we found on the way */
1980
1981 result->uid = uid;
1982 result->gid = gid;
1983
1984 /* Create a 'combined' list of all SIDs we might want in the SD */
1985
1986 result->num_sids = 0;
1987 result->sids = NULL;
1988
1989 /* and create (by appending rids) the 'domain' sids */
1990
1991 for (i = 0; i < info3->num_groups2; i++) {
1992 DOM_SID sid;
1993 if (!sid_compose(&sid, &info3->dom_sid.sid,
1994 info3->gids[i].g_rid)) {
1995 DEBUG(3,("could not append additional group rid "
1996 "0x%x\n", info3->gids[i].g_rid));
1997 TALLOC_FREE(result);
1998 return NT_STATUS_INVALID_PARAMETER;
1999 }
2000 if (!add_sid_to_array(result, &sid, &result->sids,
2001 &result->num_sids)) {
2002 TALLOC_FREE(result);
2003 return NT_STATUS_NO_MEMORY;
2004 }
2005 }
2006
2007 /* Copy 'other' sids. We need to do sid filtering here to
2008 prevent possible elevation of privileges. See:
2009
2010 http://www.microsoft.com/windows2000/techinfo/administration/security/sidfilter.asp
2011 */
2012
2013 for (i = 0; i < info3->num_other_sids; i++) {
2014 if (!add_sid_to_array(result, &info3->other_sids[i].sid,
2015 &result->sids,
2016 &result->num_sids)) {
2017 TALLOC_FREE(result);
2018 return NT_STATUS_NO_MEMORY;
2019 }
2020 }
2021
2022 result->login_server = unistr2_tdup(result,
2023 &(info3->uni_logon_srv));
2024
2025 /* ensure we are never given NULL session keys */
2026
2027 if (memcmp(info3->user_sess_key, zeros, sizeof(zeros)) == 0) {
2028 result->user_session_key = data_blob(NULL, 0);
2029 } else {
2030 result->user_session_key = data_blob_talloc(
2031 result, info3->user_sess_key,
2032 sizeof(info3->user_sess_key));
2033 }
2034
2035 if (memcmp(info3->lm_sess_key, zeros, 8) == 0) {
2036 result->lm_session_key = data_blob(NULL, 0);
2037 } else {
2038 result->lm_session_key = data_blob_talloc(
2039 result, info3->lm_sess_key,
2040 sizeof(info3->lm_sess_key));
2041 }
2042
2043 result->was_mapped = username_was_mapped;
2044
2045 *server_info = result;
2046
2047 return NT_STATUS_OK;
2048 }
2049
2050 /***************************************************************************
2051 Free a user_info struct
2052 ***************************************************************************/
2053
2054 void free_user_info(auth_usersupplied_info **user_info)
2055 {
2056 DEBUG(5,("attempting to free (and zero) a user_info structure\n"));
2057 if (*user_info != NULL) {
2058 if ((*user_info)->smb_name) {
2059 DEBUG(10,("structure was created for %s\n",
2060 (*user_info)->smb_name));
2061 }
2062 SAFE_FREE((*user_info)->smb_name);
2063 SAFE_FREE((*user_info)->internal_username);
2064 SAFE_FREE((*user_info)->client_domain);
2065 SAFE_FREE((*user_info)->domain);
2066 SAFE_FREE((*user_info)->wksta_name);
2067 data_blob_free(&(*user_info)->lm_resp);
2068 data_blob_free(&(*user_info)->nt_resp);
2069 data_blob_clear_free(&(*user_info)->lm_interactive_pwd);
2070 data_blob_clear_free(&(*user_info)->nt_interactive_pwd);
2071 data_blob_clear_free(&(*user_info)->plaintext_password);
2072 ZERO_STRUCT(**user_info);
2073 }
2074 SAFE_FREE(*user_info);
2075 }
2076
2077 /***************************************************************************
2078 Make an auth_methods struct
2079 ***************************************************************************/
2080
2081 BOOL make_auth_methods(struct auth_context *auth_context, auth_methods **auth_method)
2082 {
2083 if (!auth_context) {
2084 smb_panic("no auth_context supplied to "
2085 "make_auth_methods()!\n");
2086 }
2087
2088 if (!auth_method) {
2089 smb_panic("make_auth_methods: pointer to auth_method pointer "
2090 "is NULL!\n");
2091 }
2092
2093 *auth_method = TALLOC_P(auth_context->mem_ctx, auth_methods);
2094 if (!*auth_method) {
2095 DEBUG(0,("make_auth_method: malloc failed!\n"));
2096 return False;
2097 }
2098 ZERO_STRUCTP(*auth_method);
2099
2100 return True;
2101 }
2102
2103 /****************************************************************************
2104 Duplicate a SID token.
2105 ****************************************************************************/
2106
2107 NT_USER_TOKEN *dup_nt_token(TALLOC_CTX *mem_ctx, const NT_USER_TOKEN *ptoken)
2108 {
2109 NT_USER_TOKEN *token;
2110
2111 if (!ptoken)
2112 return NULL;
2113
2114 token = TALLOC_P(mem_ctx, NT_USER_TOKEN);
2115 if (token == NULL) {
2116 DEBUG(0, ("talloc failed\n"));
2117 return NULL;
2118 }
2119
2120 ZERO_STRUCTP(token);
2121
2122 if (ptoken->user_sids && ptoken->num_sids) {
2123 token->user_sids = (DOM_SID *)TALLOC_MEMDUP(
2124 token, ptoken->user_sids, sizeof(DOM_SID) * ptoken->num_sids );
2125
2126 if (token->user_sids == NULL) {
2127 DEBUG(0, ("TALLOC_MEMDUP failed\n"));
2128 TALLOC_FREE(token);
2129 return NULL;
2130 }
2131 token->num_sids = ptoken->num_sids;
2132 }
2133
2134 /* copy the privileges; don't consider failure to be critical here */
2135
2136 if ( !se_priv_copy( &token->privileges, &ptoken->privileges ) ) {
2137 DEBUG(0,("dup_nt_token: Failure to copy SE_PRIV!. "
2138 "Continuing with 0 privileges assigned.\n"));
2139 }
2140
2141 return token;
2142 }
2143
2144 /****************************************************************************
2145 Check for a SID in an NT_USER_TOKEN
2146 ****************************************************************************/
2147
2148 BOOL nt_token_check_sid ( const DOM_SID *sid, const NT_USER_TOKEN *token )
2149 {
2150 int i;
2151
2152 if ( !sid || !token )
2153 return False;
2154
2155 for ( i=0; i<token->num_sids; i++ ) {
2156 if ( sid_equal( sid, &token->user_sids[i] ) )
2157 return True;
2158 }
2159
2160 return False;
2161 }
2162
2163 BOOL nt_token_check_domain_rid( NT_USER_TOKEN *token, uint32 rid )
2164 {
2165 DOM_SID domain_sid;
2166
2167 /* if we are a domain member, the get the domain SID, else for
2168 a DC or standalone server, use our own SID */
2169
2170 if ( lp_server_role() == ROLE_DOMAIN_MEMBER ) {
2171 if ( !secrets_fetch_domain_sid( lp_workgroup(),
2172 &domain_sid ) ) {
2173 DEBUG(1,("nt_token_check_domain_rid: Cannot lookup "
2174 "SID for domain [%s]\n", lp_workgroup()));
2175 return False;
2176 }
2177 }
2178 else
2179 sid_copy( &domain_sid, get_global_sam_sid() );
2180
2181 sid_append_rid( &domain_sid, rid );
2182
2183 return nt_token_check_sid( &domain_sid, token );\
2184 }
2185
2186 /**
2187 * Verify whether or not given domain is trusted.
2188 *
2189 * @param domain_name name of the domain to be verified
2190 * @return true if domain is one of the trusted once or
2191 * false if otherwise
2192 **/
2193
2194 BOOL is_trusted_domain(const char* dom_name)
2195 {
2196 DOM_SID trustdom_sid;
2197 BOOL ret;
2198
2199 /* no trusted domains for a standalone server */
2200
2201 if ( lp_server_role() == ROLE_STANDALONE )
2202 return False;
2203
2204 /* if we are a DC, then check for a direct trust relationships */
2205
2206 if ( IS_DC ) {
2207 become_root();
2208 DEBUG (5,("is_trusted_domain: Checking for domain trust with "
2209 "[%s]\n", dom_name ));
2210 ret = secrets_fetch_trusted_domain_password(dom_name, NULL,
2211 NULL, NULL);
2212 unbecome_root();
2213 if (ret)
2214 return True;
2215 }
2216 else {
2217 NSS_STATUS result;
2218
2219 /* If winbind is around, ask it */
2220
2221 result = wb_is_trusted_domain(dom_name);
2222
2223 if (result == NSS_STATUS_SUCCESS) {
2224 return True;
2225 }
2226
2227 if (result == NSS_STATUS_NOTFOUND) {
2228 /* winbind could not find the domain */
2229 return False;
2230 }
2231
2232 /* The only other possible result is that winbind is not up
2233 and running. We need to update the trustdom_cache
2234 ourselves */
2235
2236 update_trustdom_cache();
2237 }
2238
2239 /* now the trustdom cache should be available a DC could still
2240 * have a transitive trust so fall back to the cache of trusted
2241 * domains (like a domain member would use */
2242
2243 if ( trustdom_cache_fetch(dom_name, &trustdom_sid) ) {
2244 return True;
2245 }
2246
2247 return False;
2248 }
2249
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