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r3008: when checking for the existance of a lock we are only doing a single
[Samba.git] / source / auth / auth_util.c
blob5e8f18881fb26b3f6563ca97bb6f2329f735e5c9
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
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 2 of the License, or
12 (at your option) any later version.
13
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
18
19 You should have received a copy of the GNU General Public License
20 along with this program; if not, write to the Free Software
21 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
22 */
23
24 #include "includes.h"
25
26 #undef DBGC_CLASS
27 #define DBGC_CLASS DBGC_AUTH
28
29 extern DOM_SID global_sid_World;
30 extern DOM_SID global_sid_Network;
31 extern DOM_SID global_sid_Builtin_Guests;
32 extern DOM_SID global_sid_Authenticated_Users;
33
34
35 /****************************************************************************
36 Create a UNIX user on demand.
37 ****************************************************************************/
38
39 static int smb_create_user(const char *domain, const char *unix_username, const char *homedir)
40 {
41 pstring add_script;
42 int ret;
43
44 pstrcpy(add_script, lp_adduser_script());
45 if (! *add_script)
46 return -1;
47 all_string_sub(add_script, "%u", unix_username, sizeof(pstring));
48 if (domain)
49 all_string_sub(add_script, "%D", domain, sizeof(pstring));
50 if (homedir)
51 all_string_sub(add_script, "%H", homedir, sizeof(pstring));
52 ret = smbrun(add_script,NULL);
53 DEBUG(3,("smb_create_user: Running the command `%s' gave %d\n",add_script,ret));
54 return ret;
55 }
56
57 /****************************************************************************
58 Add and Delete UNIX users on demand, based on NTSTATUS codes.
59 We don't care about RID's here so ignore.
60 ****************************************************************************/
61
62 void auth_add_user_script(const char *domain, const char *username)
63 {
64 uint32 rid;
65 /*
66 * User validated ok against Domain controller.
67 * If the admin wants us to try and create a UNIX
68 * user on the fly, do so.
69 */
70
71 if ( *lp_adduser_script() )
72 smb_create_user(domain, username, NULL);
73 else {
74 DEBUG(10,("auth_add_user_script: no 'add user script'. Asking winbindd\n"));
75
76 /* should never get here is we a re a domain member running winbindd
77 However, a host set for 'security = server' might run winbindd for
78 account allocation */
79
80 if ( !winbind_create_user(username, NULL) ) {
81 DEBUG(5,("auth_add_user_script: winbindd_create_user() failed\n"));
82 rid = 0;
83 }
84 }
85 }
86
87 /****************************************************************************
88 Create a SAM_ACCOUNT - either by looking in the pdb, or by faking it up from
89 unix info.
90 ****************************************************************************/
91
92 NTSTATUS auth_get_sam_account(const char *user, SAM_ACCOUNT **account)
93 {
94 BOOL pdb_ret;
95 NTSTATUS nt_status;
96 if (!NT_STATUS_IS_OK(nt_status = pdb_init_sam(account))) {
97 return nt_status;
98 }
99
100 become_root();
101 pdb_ret = pdb_getsampwnam(*account, user);
102 unbecome_root();
103
104 if (!pdb_ret) {
105
106 struct passwd *pass = Get_Pwnam(user);
107 if (!pass)
108 return NT_STATUS_NO_SUCH_USER;
109
110 if (!NT_STATUS_IS_OK(nt_status = pdb_fill_sam_pw(*account, pass))) {
111 return nt_status;
112 }
113 }
114 return NT_STATUS_OK;
115 }
116
117 /****************************************************************************
118 Create an auth_usersupplied_data structure
119 ****************************************************************************/
120
121 static NTSTATUS make_user_info(auth_usersupplied_info **user_info,
122 const char *smb_name,
123 const char *internal_username,
124 const char *client_domain,
125 const char *domain,
126 const char *wksta_name,
127 DATA_BLOB *lm_pwd, DATA_BLOB *nt_pwd,
128 DATA_BLOB *lm_interactive_pwd, DATA_BLOB *nt_interactive_pwd,
129 DATA_BLOB *plaintext,
130 BOOL encrypted)
131 {
132
133 DEBUG(5,("attempting to make a user_info for %s (%s)\n", internal_username, smb_name));
134
135 *user_info = malloc(sizeof(**user_info));
136 if (!user_info) {
137 DEBUG(0,("malloc failed for user_info (size %lu)\n", (unsigned long)sizeof(*user_info)));
138 return NT_STATUS_NO_MEMORY;
139 }
140
141 ZERO_STRUCTP(*user_info);
142
143 DEBUG(5,("making strings for %s's user_info struct\n", internal_username));
144
145 (*user_info)->smb_name.str = strdup(smb_name);
146 if ((*user_info)->smb_name.str) {
147 (*user_info)->smb_name.len = strlen(smb_name);
148 } else {
149 free_user_info(user_info);
150 return NT_STATUS_NO_MEMORY;
151 }
152
153 (*user_info)->internal_username.str = strdup(internal_username);
154 if ((*user_info)->internal_username.str) {
155 (*user_info)->internal_username.len = strlen(internal_username);
156 } else {
157 free_user_info(user_info);
158 return NT_STATUS_NO_MEMORY;
159 }
160
161 (*user_info)->domain.str = strdup(domain);
162 if ((*user_info)->domain.str) {
163 (*user_info)->domain.len = strlen(domain);
164 } else {
165 free_user_info(user_info);
166 return NT_STATUS_NO_MEMORY;
167 }
168
169 (*user_info)->client_domain.str = strdup(client_domain);
170 if ((*user_info)->client_domain.str) {
171 (*user_info)->client_domain.len = strlen(client_domain);
172 } else {
173 free_user_info(user_info);
174 return NT_STATUS_NO_MEMORY;
175 }
176
177 (*user_info)->wksta_name.str = strdup(wksta_name);
178 if ((*user_info)->wksta_name.str) {
179 (*user_info)->wksta_name.len = strlen(wksta_name);
180 } else {
181 free_user_info(user_info);
182 return NT_STATUS_NO_MEMORY;
183 }
184
185 DEBUG(5,("making blobs for %s's user_info struct\n", internal_username));
186
187 if (lm_pwd)
188 (*user_info)->lm_resp = data_blob(lm_pwd->data, lm_pwd->length);
189 if (nt_pwd)
190 (*user_info)->nt_resp = data_blob(nt_pwd->data, nt_pwd->length);
191 if (lm_interactive_pwd)
192 (*user_info)->lm_interactive_pwd = data_blob(lm_interactive_pwd->data, lm_interactive_pwd->length);
193 if (nt_interactive_pwd)
194 (*user_info)->nt_interactive_pwd = data_blob(nt_interactive_pwd->data, nt_interactive_pwd->length);
195
196 if (plaintext)
197 (*user_info)->plaintext_password = data_blob(plaintext->data, plaintext->length);
198
199 (*user_info)->encrypted = encrypted;
200
201 DEBUG(10,("made an %sencrypted user_info for %s (%s)\n", encrypted ? "":"un" , internal_username, smb_name));
202
203 return NT_STATUS_OK;
204 }
205
206 /****************************************************************************
207 Create an auth_usersupplied_data structure after appropriate mapping.
208 ****************************************************************************/
209
210 NTSTATUS make_user_info_map(auth_usersupplied_info **user_info,
211 const char *smb_name,
212 const char *client_domain,
213 const char *wksta_name,
214 DATA_BLOB *lm_pwd, DATA_BLOB *nt_pwd,
215 DATA_BLOB *lm_interactive_pwd, DATA_BLOB *nt_interactive_pwd,
216 DATA_BLOB *plaintext,
217 BOOL encrypted)
218 {
219 const char *domain;
220 fstring internal_username;
221 fstrcpy(internal_username, smb_name);
222 map_username(internal_username);
223
224 DEBUG(5, ("make_user_info_map: Mapping user [%s]\\[%s] from workstation [%s]\n",
225 client_domain, smb_name, wksta_name));
226
227 /* don't allow "" as a domain, fixes a Win9X bug
228 where it doens't supply a domain for logon script
229 'net use' commands. */
230
231 if ( *client_domain )
232 domain = client_domain;
233 else
234 domain = lp_workgroup();
235
236 /* do what win2k does. Always map unknown domains to our own
237 and let the "passdb backend" handle unknown users. */
238
239 if ( !is_trusted_domain(domain) && !strequal(domain, get_global_sam_name()) )
240 domain = get_default_sam_name();
241
242 /* we know that it is a trusted domain (and we are allowing them) or it is our domain */
243
244 return make_user_info(user_info, smb_name, internal_username,
245 client_domain, domain, wksta_name,
246 lm_pwd, nt_pwd,
247 lm_interactive_pwd, nt_interactive_pwd,
248 plaintext, encrypted);
249 }
250
251 /****************************************************************************
252 Create an auth_usersupplied_data, making the DATA_BLOBs here.
253 Decrypt and encrypt the passwords.
254 ****************************************************************************/
255
256 BOOL make_user_info_netlogon_network(auth_usersupplied_info **user_info,
257 const char *smb_name,
258 const char *client_domain,
259 const char *wksta_name,
260 const uchar *lm_network_pwd, int lm_pwd_len,
261 const uchar *nt_network_pwd, int nt_pwd_len)
262 {
263 BOOL ret;
264 NTSTATUS nt_status;
265 DATA_BLOB lm_blob = data_blob(lm_network_pwd, lm_pwd_len);
266 DATA_BLOB nt_blob = data_blob(nt_network_pwd, nt_pwd_len);
267
268 nt_status = make_user_info_map(user_info,
269 smb_name, client_domain,
270 wksta_name,
271 lm_pwd_len ? &lm_blob : NULL,
272 nt_pwd_len ? &nt_blob : NULL,
273 NULL, NULL, NULL,
274 True);
275
276 ret = NT_STATUS_IS_OK(nt_status) ? True : False;
277
278 data_blob_free(&lm_blob);
279 data_blob_free(&nt_blob);
280 return ret;
281 }
282
283 /****************************************************************************
284 Create an auth_usersupplied_data, making the DATA_BLOBs here.
285 Decrypt and encrypt the passwords.
286 ****************************************************************************/
287
288 BOOL make_user_info_netlogon_interactive(auth_usersupplied_info **user_info,
289 const char *smb_name,
290 const char *client_domain,
291 const char *wksta_name,
292 const uchar chal[8],
293 const uchar lm_interactive_pwd[16],
294 const uchar nt_interactive_pwd[16],
295 const uchar *dc_sess_key)
296 {
297 char lm_pwd[16];
298 char nt_pwd[16];
299 unsigned char local_lm_response[24];
300 unsigned char local_nt_response[24];
301 unsigned char key[16];
302
303 ZERO_STRUCT(key);
304 memcpy(key, dc_sess_key, 8);
305
306 if (lm_interactive_pwd) memcpy(lm_pwd, lm_interactive_pwd, sizeof(lm_pwd));
307 if (nt_interactive_pwd) memcpy(nt_pwd, nt_interactive_pwd, sizeof(nt_pwd));
308
309 #ifdef DEBUG_PASSWORD
310 DEBUG(100,("key:"));
311 dump_data(100, (char *)key, sizeof(key));
312
313 DEBUG(100,("lm owf password:"));
314 dump_data(100, lm_pwd, sizeof(lm_pwd));
315
316 DEBUG(100,("nt owf password:"));
317 dump_data(100, nt_pwd, sizeof(nt_pwd));
318 #endif
319
320 if (lm_interactive_pwd)
321 SamOEMhash((uchar *)lm_pwd, key, sizeof(lm_pwd));
322
323 if (nt_interactive_pwd)
324 SamOEMhash((uchar *)nt_pwd, key, sizeof(nt_pwd));
325
326 #ifdef DEBUG_PASSWORD
327 DEBUG(100,("decrypt of lm owf password:"));
328 dump_data(100, lm_pwd, sizeof(lm_pwd));
329
330 DEBUG(100,("decrypt of nt owf password:"));
331 dump_data(100, nt_pwd, sizeof(nt_pwd));
332 #endif
333
334 if (lm_interactive_pwd)
335 SMBOWFencrypt((const unsigned char *)lm_pwd, chal, local_lm_response);
336
337 if (nt_interactive_pwd)
338 SMBOWFencrypt((const unsigned char *)nt_pwd, chal, local_nt_response);
339
340 /* Password info paranoia */
341 ZERO_STRUCT(key);
342
343 {
344 BOOL ret;
345 NTSTATUS nt_status;
346 DATA_BLOB local_lm_blob;
347 DATA_BLOB local_nt_blob;
348
349 DATA_BLOB lm_interactive_blob;
350 DATA_BLOB nt_interactive_blob;
351
352 if (lm_interactive_pwd) {
353 local_lm_blob = data_blob(local_lm_response, sizeof(local_lm_response));
354 lm_interactive_blob = data_blob(lm_pwd, sizeof(lm_pwd));
355 ZERO_STRUCT(lm_pwd);
356 }
357
358 if (nt_interactive_pwd) {
359 local_nt_blob = data_blob(local_nt_response, sizeof(local_nt_response));
360 nt_interactive_blob = data_blob(nt_pwd, sizeof(nt_pwd));
361 ZERO_STRUCT(nt_pwd);
362 }
363
364 nt_status = make_user_info_map(user_info,
365 smb_name, client_domain,
366 wksta_name,
367 lm_interactive_pwd ? &local_lm_blob : NULL,
368 nt_interactive_pwd ? &local_nt_blob : NULL,
369 lm_interactive_pwd ? &lm_interactive_blob : NULL,
370 nt_interactive_pwd ? &nt_interactive_blob : NULL,
371 NULL,
372 True);
373
374 ret = NT_STATUS_IS_OK(nt_status) ? True : False;
375 data_blob_free(&local_lm_blob);
376 data_blob_free(&local_nt_blob);
377 data_blob_free(&lm_interactive_blob);
378 data_blob_free(&nt_interactive_blob);
379 return ret;
380 }
381 }
382
383
384 /****************************************************************************
385 Create an auth_usersupplied_data structure
386 ****************************************************************************/
387
388 BOOL make_user_info_for_reply(auth_usersupplied_info **user_info,
389 const char *smb_name,
390 const char *client_domain,
391 const uint8 chal[8],
392 DATA_BLOB plaintext_password)
393 {
394
395 DATA_BLOB local_lm_blob;
396 DATA_BLOB local_nt_blob;
397 NTSTATUS ret = NT_STATUS_UNSUCCESSFUL;
398
399 /*
400 * Not encrypted - do so.
401 */
402
403 DEBUG(5,("make_user_info_for_reply: User passwords not in encrypted format.\n"));
404
405 if (plaintext_password.data) {
406 unsigned char local_lm_response[24];
407
408 #ifdef DEBUG_PASSWORD
409 DEBUG(10,("Unencrypted password (len %d):\n",plaintext_password.length));
410 dump_data(100, plaintext_password.data, plaintext_password.length);
411 #endif
412
413 SMBencrypt( (const char *)plaintext_password.data, (const uchar*)chal, local_lm_response);
414 local_lm_blob = data_blob(local_lm_response, 24);
415
416 /* We can't do an NT hash here, as the password needs to be
417 case insensitive */
418 local_nt_blob = data_blob(NULL, 0);
419
420 } else {
421 local_lm_blob = data_blob(NULL, 0);
422 local_nt_blob = data_blob(NULL, 0);
423 }
424
425 ret = make_user_info_map(user_info, smb_name,
426 client_domain,
427 get_remote_machine_name(),
428 local_lm_blob.data ? &local_lm_blob : NULL,
429 local_nt_blob.data ? &local_nt_blob : NULL,
430 NULL, NULL,
431 plaintext_password.data ? &plaintext_password : NULL,
432 False);
433
434 data_blob_free(&local_lm_blob);
435 return NT_STATUS_IS_OK(ret) ? True : False;
436 }
437
438 /****************************************************************************
439 Create an auth_usersupplied_data structure
440 ****************************************************************************/
441
442 NTSTATUS make_user_info_for_reply_enc(auth_usersupplied_info **user_info,
443 const char *smb_name,
444 const char *client_domain,
445 DATA_BLOB lm_resp, DATA_BLOB nt_resp)
446 {
447 return make_user_info_map(user_info, smb_name,
448 client_domain,
449 get_remote_machine_name(),
450 lm_resp.data ? &lm_resp : NULL,
451 nt_resp.data ? &nt_resp : NULL,
452 NULL, NULL, NULL,
453 True);
454 }
455
456 /****************************************************************************
457 Create a guest user_info blob, for anonymous authenticaion.
458 ****************************************************************************/
459
460 BOOL make_user_info_guest(auth_usersupplied_info **user_info)
461 {
462 NTSTATUS nt_status;
463
464 nt_status = make_user_info(user_info,
465 "","",
466 "","",
467 "",
468 NULL, NULL,
469 NULL, NULL,
470 NULL,
471 True);
472
473 return NT_STATUS_IS_OK(nt_status) ? True : False;
474 }
475
476 /****************************************************************************
477 prints a NT_USER_TOKEN to debug output.
478 ****************************************************************************/
479
480 void debug_nt_user_token(int dbg_class, int dbg_lev, NT_USER_TOKEN *token)
481 {
482 fstring sid_str;
483 size_t i;
484
485 if (!token) {
486 DEBUGC(dbg_class, dbg_lev, ("NT user token: (NULL)\n"));
487 return;
488 }
489
490 DEBUGC(dbg_class, dbg_lev, ("NT user token of user %s\n",
491 sid_to_string(sid_str, &token->user_sids[0]) ));
492 DEBUGADDC(dbg_class, dbg_lev, ("contains %lu SIDs\n", (unsigned long)token->num_sids));
493 for (i = 0; i < token->num_sids; i++)
494 DEBUGADDC(dbg_class, dbg_lev, ("SID[%3lu]: %s\n", (unsigned long)i,
495 sid_to_string(sid_str, &token->user_sids[i])));
496 }
497
498 /****************************************************************************
499 prints a UNIX 'token' to debug output.
500 ****************************************************************************/
501
502 void debug_unix_user_token(int dbg_class, int dbg_lev, uid_t uid, gid_t gid, int n_groups, gid_t *groups)
503 {
504 int i;
505 DEBUGC(dbg_class, dbg_lev, ("UNIX token of user %ld\n", (long int)uid));
506
507 DEBUGADDC(dbg_class, dbg_lev, ("Primary group is %ld and contains %i supplementary groups\n", (long int)gid, n_groups));
508 for (i = 0; i < n_groups; i++)
509 DEBUGADDC(dbg_class, dbg_lev, ("Group[%3i]: %ld\n", i,
510 (long int)groups[i]));
511 }
512
513 /****************************************************************************
514 Create the SID list for this user.
515 ****************************************************************************/
516
517 static NTSTATUS create_nt_user_token(const DOM_SID *user_sid, const DOM_SID *group_sid,
518 int n_groupSIDs, DOM_SID *groupSIDs,
519 BOOL is_guest, NT_USER_TOKEN **token)
520 {
521 NTSTATUS nt_status = NT_STATUS_OK;
522 NT_USER_TOKEN *ptoken;
523 int i;
524 int sid_ndx;
525
526 if ((ptoken = malloc( sizeof(NT_USER_TOKEN) ) ) == NULL) {
527 DEBUG(0, ("create_nt_token: Out of memory allocating token\n"));
528 nt_status = NT_STATUS_NO_MEMORY;
529 return nt_status;
530 }
531
532 ZERO_STRUCTP(ptoken);
533
534 ptoken->num_sids = n_groupSIDs + 5;
535
536 if ((ptoken->user_sids = (DOM_SID *)malloc( sizeof(DOM_SID) * ptoken->num_sids )) == NULL) {
537 DEBUG(0, ("create_nt_token: Out of memory allocating SIDs\n"));
538 nt_status = NT_STATUS_NO_MEMORY;
539 return nt_status;
540 }
541
542 memset((char*)ptoken->user_sids,0,sizeof(DOM_SID) * ptoken->num_sids);
543
544 /*
545 * Note - user SID *MUST* be first in token !
546 * se_access_check depends on this.
547 *
548 * Primary group SID is second in token. Convention.
549 */
550
551 sid_copy(&ptoken->user_sids[PRIMARY_USER_SID_INDEX], user_sid);
552 if (group_sid)
553 sid_copy(&ptoken->user_sids[PRIMARY_GROUP_SID_INDEX], group_sid);
554
555 /*
556 * Finally add the "standard" SIDs.
557 * The only difference between guest and "anonymous" (which we
558 * don't really support) is the addition of Authenticated_Users.
559 */
560
561 sid_copy(&ptoken->user_sids[2], &global_sid_World);
562 sid_copy(&ptoken->user_sids[3], &global_sid_Network);
563
564 if (is_guest)
565 sid_copy(&ptoken->user_sids[4], &global_sid_Builtin_Guests);
566 else
567 sid_copy(&ptoken->user_sids[4], &global_sid_Authenticated_Users);
568
569 sid_ndx = 5; /* next available spot */
570
571 for (i = 0; i < n_groupSIDs; i++) {
572 size_t check_sid_idx;
573 for (check_sid_idx = 1; check_sid_idx < ptoken->num_sids; check_sid_idx++) {
574 if (sid_equal(&ptoken->user_sids[check_sid_idx],
575 &groupSIDs[i])) {
576 break;
577 }
578 }
579
580 if (check_sid_idx >= ptoken->num_sids) /* Not found already */ {
581 sid_copy(&ptoken->user_sids[sid_ndx++], &groupSIDs[i]);
582 } else {
583 ptoken->num_sids--;
584 }
585 }
586
587 debug_nt_user_token(DBGC_AUTH, 10, ptoken);
588
589 *token = ptoken;
590
591 return nt_status;
592 }
593
594 /****************************************************************************
595 Create the SID list for this user.
596 ****************************************************************************/
597
598 NT_USER_TOKEN *create_nt_token(uid_t uid, gid_t gid, int ngroups, gid_t *groups, BOOL is_guest)
599 {
600 DOM_SID user_sid;
601 DOM_SID group_sid;
602 DOM_SID *group_sids;
603 NT_USER_TOKEN *token;
604 int i;
605
606 if (!NT_STATUS_IS_OK(uid_to_sid(&user_sid, uid))) {
607 return NULL;
608 }
609 if (!NT_STATUS_IS_OK(gid_to_sid(&group_sid, gid))) {
610 return NULL;
611 }
612
613 group_sids = malloc(sizeof(DOM_SID) * ngroups);
614 if (!group_sids) {
615 DEBUG(0, ("create_nt_token: malloc() failed for DOM_SID list!\n"));
616 return NULL;
617 }
618
619 for (i = 0; i < ngroups; i++) {
620 if (!NT_STATUS_IS_OK(gid_to_sid(&(group_sids)[i], (groups)[i]))) {
621 DEBUG(1, ("create_nt_token: failed to convert gid %ld to a sid!\n", (long int)groups[i]));
622 SAFE_FREE(group_sids);
623 return NULL;
624 }
625 }
626
627 if (!NT_STATUS_IS_OK(create_nt_user_token(&user_sid, &group_sid,
628 ngroups, group_sids, is_guest, &token))) {
629 SAFE_FREE(group_sids);
630 return NULL;
631 }
632
633 SAFE_FREE(group_sids);
634
635 return token;
636 }
637
638 /******************************************************************************
639 * this function returns the groups (SIDs) of the local SAM the user is in.
640 * If this samba server is a DC of the domain the user belongs to, it returns
641 * both domain groups and local / builtin groups. If the user is in a trusted
642 * domain, or samba is a member server of a domain, then this function returns
643 * local and builtin groups the user is a member of.
644 *
645 * currently this is a hack, as there is no sam implementation that is capable
646 * of groups.
647 *
648 * NOTE!! This function will fail if you pass in a winbind user without
649 * the domain --jerry
650 ******************************************************************************/
651
652 static NTSTATUS get_user_groups(const char *username, uid_t uid, gid_t gid,
653 int *n_groups, DOM_SID **groups, gid_t **unix_groups)
654 {
655 int n_unix_groups;
656 int i;
657
658 *n_groups = 0;
659 *groups = NULL;
660
661 /* Try winbind first */
662
663 if ( strchr(username, *lp_winbind_separator()) ) {
664 n_unix_groups = winbind_getgroups( username, unix_groups );
665
666 DEBUG(10,("get_user_groups: winbind_getgroups(%s): result = %s\n", username,
667 n_unix_groups == -1 ? "FAIL" : "SUCCESS"));
668
669 if ( n_unix_groups == -1 )
670 return NT_STATUS_NO_SUCH_USER; /* what should this return value be? */
671 }
672 else {
673 /* fallback to getgrouplist() */
674
675 n_unix_groups = groups_max();
676
677 if ((*unix_groups = malloc( sizeof(gid_t) * n_unix_groups ) ) == NULL) {
678 DEBUG(0, ("get_user_groups: Out of memory allocating unix group list\n"));
679 return NT_STATUS_NO_MEMORY;
680 }
681
682 if (sys_getgrouplist(username, gid, *unix_groups, &n_unix_groups) == -1) {
683
684 gid_t *groups_tmp;
685
686 groups_tmp = Realloc(*unix_groups, sizeof(gid_t) * n_unix_groups);
687
688 if (!groups_tmp) {
689 SAFE_FREE(*unix_groups);
690 return NT_STATUS_NO_MEMORY;
691 }
692 *unix_groups = groups_tmp;
693
694 if (sys_getgrouplist(username, gid, *unix_groups, &n_unix_groups) == -1) {
695 DEBUG(0, ("get_user_groups: failed to get the unix group list\n"));
696 SAFE_FREE(*unix_groups);
697 return NT_STATUS_NO_SUCH_USER; /* what should this return value be? */
698 }
699 }
700 }
701
702 debug_unix_user_token(DBGC_CLASS, 5, uid, gid, n_unix_groups, *unix_groups);
703
704 /* now setup the space for storing the SIDS */
705
706 if (n_unix_groups > 0) {
707
708 *groups = malloc(sizeof(DOM_SID) * n_unix_groups);
709
710 if (!*groups) {
711 DEBUG(0, ("get_user_group: malloc() failed for DOM_SID list!\n"));
712 SAFE_FREE(*unix_groups);
713 return NT_STATUS_NO_MEMORY;
714 }
715 }
716
717 *n_groups = n_unix_groups;
718
719 for (i = 0; i < *n_groups; i++) {
720 if (!NT_STATUS_IS_OK(gid_to_sid(&(*groups)[i], (*unix_groups)[i]))) {
721 DEBUG(1, ("get_user_groups: failed to convert gid %ld to a sid!\n",
722 (long int)(*unix_groups)[i+1]));
723 SAFE_FREE(*groups);
724 SAFE_FREE(*unix_groups);
725 return NT_STATUS_NO_SUCH_USER;
726 }
727 }
728
729 return NT_STATUS_OK;
730 }
731
732 /***************************************************************************
733 Make a user_info struct
734 ***************************************************************************/
735
736 static NTSTATUS make_server_info(auth_serversupplied_info **server_info)
737 {
738 *server_info = malloc(sizeof(**server_info));
739 if (!*server_info) {
740 DEBUG(0,("make_server_info: malloc failed!\n"));
741 return NT_STATUS_NO_MEMORY;
742 }
743 ZERO_STRUCTP(*server_info);
744
745 /* Initialise the uid and gid values to something non-zero
746 which may save us from giving away root access if there
747 is a bug in allocating these fields. */
748
749 (*server_info)->uid = -1;
750 (*server_info)->gid = -1;
751
752 return NT_STATUS_OK;
753 }
754
755 /***************************************************************************
756 Fill a server_info struct from a SAM_ACCOUNT with their groups
757 ***************************************************************************/
758
759 static NTSTATUS add_user_groups(auth_serversupplied_info **server_info,
760 const char * unix_username,
761 SAM_ACCOUNT *sampass,
762 uid_t uid, gid_t gid)
763 {
764 NTSTATUS nt_status;
765 const DOM_SID *user_sid = pdb_get_user_sid(sampass);
766 const DOM_SID *group_sid = pdb_get_group_sid(sampass);
767 int n_groupSIDs = 0;
768 DOM_SID *groupSIDs = NULL;
769 gid_t *unix_groups = NULL;
770 NT_USER_TOKEN *token;
771 BOOL is_guest;
772 uint32 rid;
773
774 nt_status = get_user_groups(unix_username, uid, gid,
775 &n_groupSIDs, &groupSIDs, &unix_groups);
776
777 if (!NT_STATUS_IS_OK(nt_status)) {
778 DEBUG(4,("get_user_groups_from_local_sam failed\n"));
779 free_server_info(server_info);
780 return nt_status;
781 }
782
783 is_guest = (sid_peek_rid(user_sid, &rid) && rid == DOMAIN_USER_RID_GUEST);
784
785 if (!NT_STATUS_IS_OK(nt_status = create_nt_user_token(user_sid, group_sid,
786 n_groupSIDs, groupSIDs, is_guest,
787 &token)))
788 {
789 DEBUG(4,("create_nt_user_token failed\n"));
790 SAFE_FREE(groupSIDs);
791 SAFE_FREE(unix_groups);
792 free_server_info(server_info);
793 return nt_status;
794 }
795
796 SAFE_FREE(groupSIDs);
797
798 (*server_info)->n_groups = n_groupSIDs;
799 (*server_info)->groups = unix_groups;
800 (*server_info)->ptok = token;
801
802 return nt_status;
803 }
804
805 /***************************************************************************
806 Make (and fill) a user_info struct from a SAM_ACCOUNT
807 ***************************************************************************/
808
809 NTSTATUS make_server_info_sam(auth_serversupplied_info **server_info,
810 SAM_ACCOUNT *sampass)
811 {
812 NTSTATUS nt_status;
813 struct passwd *pwd;
814
815 if (!NT_STATUS_IS_OK(nt_status = make_server_info(server_info)))
816 return nt_status;
817
818 (*server_info)->sam_account = sampass;
819
820 if ( !(pwd = getpwnam_alloc(pdb_get_username(sampass))) ) {
821 DEBUG(1, ("User %s in passdb, but getpwnam() fails!\n",
822 pdb_get_username(sampass)));
823 free_server_info(server_info);
824 return NT_STATUS_NO_SUCH_USER;
825 }
826 (*server_info)->unix_name = smb_xstrdup(pwd->pw_name);
827 (*server_info)->gid = pwd->pw_gid;
828 (*server_info)->uid = pwd->pw_uid;
829
830 passwd_free(&pwd);
831
832 if (!NT_STATUS_IS_OK(nt_status = add_user_groups(server_info, pdb_get_username(sampass),
833 sampass,
834 (*server_info)->uid,
835 (*server_info)->gid)))
836 {
837 free_server_info(server_info);
838 return nt_status;
839 }
840
841 (*server_info)->sam_fill_level = SAM_FILL_ALL;
842 DEBUG(5,("make_server_info_sam: made server info for user %s -> %s\n",
843 pdb_get_username(sampass),
844 (*server_info)->unix_name));
845
846 return nt_status;
847 }
848
849 /***************************************************************************
850 Make (and fill) a user_info struct from a 'struct passwd' by conversion
851 to a SAM_ACCOUNT
852 ***************************************************************************/
853
854 NTSTATUS make_server_info_pw(auth_serversupplied_info **server_info,
855 char *unix_username,
856 struct passwd *pwd)
857 {
858 NTSTATUS nt_status;
859 SAM_ACCOUNT *sampass = NULL;
860 if (!NT_STATUS_IS_OK(nt_status = pdb_init_sam_pw(&sampass, pwd))) {
861 return nt_status;
862 }
863 if (!NT_STATUS_IS_OK(nt_status = make_server_info(server_info))) {
864 return nt_status;
865 }
866
867 (*server_info)->sam_account = sampass;
868
869 if (!NT_STATUS_IS_OK(nt_status = add_user_groups(server_info, unix_username,
870 sampass, pwd->pw_uid, pwd->pw_gid)))
871 {
872 return nt_status;
873 }
874
875 (*server_info)->unix_name = smb_xstrdup(unix_username);
876
877 (*server_info)->sam_fill_level = SAM_FILL_ALL;
878 (*server_info)->uid = pwd->pw_uid;
879 (*server_info)->gid = pwd->pw_gid;
880 return nt_status;
881 }
882
883 /***************************************************************************
884 Make (and fill) a user_info struct for a guest login.
885 ***************************************************************************/
886
887 NTSTATUS make_server_info_guest(auth_serversupplied_info **server_info)
888 {
889 NTSTATUS nt_status;
890 SAM_ACCOUNT *sampass = NULL;
891 DOM_SID guest_sid;
892
893 if (!NT_STATUS_IS_OK(nt_status = pdb_init_sam(&sampass))) {
894 return nt_status;
895 }
896
897 sid_copy(&guest_sid, get_global_sam_sid());
898 sid_append_rid(&guest_sid, DOMAIN_USER_RID_GUEST);
899
900 become_root();
901 if (!pdb_getsampwsid(sampass, &guest_sid)) {
902 unbecome_root();
903 return NT_STATUS_NO_SUCH_USER;
904 }
905 unbecome_root();
906
907 nt_status = make_server_info_sam(server_info, sampass);
908
909 if (NT_STATUS_IS_OK(nt_status)) {
910 static const char zeros[16];
911 (*server_info)->guest = True;
912
913 /* annoying, but the Guest really does have a session key,
914 and it is all zeros! */
915 (*server_info)->user_session_key = data_blob(zeros, sizeof(zeros));
916 (*server_info)->lm_session_key = data_blob(zeros, sizeof(zeros));
917 }
918
919 return nt_status;
920 }
921
922 /***************************************************************************
923 Purely internal function for make_server_info_info3
924 Fill the sam account from getpwnam
925 ***************************************************************************/
926 static NTSTATUS fill_sam_account(TALLOC_CTX *mem_ctx,
927 const char *domain,
928 const char *username,
929 char **found_username,
930 uid_t *uid, gid_t *gid,
931 SAM_ACCOUNT **sam_account)
932 {
933 fstring dom_user;
934 fstring real_username;
935 struct passwd *passwd;
936
937 fstr_sprintf(dom_user, "%s%s%s", domain, lp_winbind_separator(),
938 username);
939
940 /* get the passwd struct but don't create the user if he/she
941 does not exist. We were explicitly called from a following
942 a winbindd authentication request so we should assume that
943 nss_winbindd is working */
944
945 if ( !(passwd = smb_getpwnam( dom_user, real_username, True )) )
946 return NT_STATUS_NO_SUCH_USER;
947
948 *uid = passwd->pw_uid;
949 *gid = passwd->pw_gid;
950
951 /* This is pointless -- there is no suport for differing
952 unix and windows names. Make sure to always store the
953 one we actually looked up and succeeded. Have I mentioned
954 why I hate the 'winbind use default domain' parameter?
955 --jerry */
956
957 *found_username = talloc_strdup( mem_ctx, real_username );
958
959 DEBUG(5,("fill_sam_account: located username was [%s]\n",
960 *found_username));
961
962 return pdb_init_sam_pw(sam_account, passwd);
963 }
964
965 /****************************************************************************
966 Wrapper to allow the getpwnam() call to strip the domain name and
967 try again in case a local UNIX user is already there. Also run through
968 the username if we fallback to the username only.
969 ****************************************************************************/
970
971 struct passwd *smb_getpwnam( char *domuser, fstring save_username, BOOL create )
972 {
973 struct passwd *pw = NULL;
974 char *p;
975 fstring username;
976
977 /* we only save a copy of the username it has been mangled
978 by winbindd use default domain */
979
980 save_username[0] = '\0';
981
982 /* don't call map_username() here since it has to be done higher
983 up the stack so we don't call it mutliple times */
984
985 fstrcpy( username, domuser );
986
987 p = strchr_m( username, *lp_winbind_separator() );
988
989 /* code for a DOMAIN\user string */
990
991 if ( p ) {
992 fstring strip_username;
993
994 pw = Get_Pwnam( domuser );
995 if ( pw ) {
996 /* make sure we get the case of the username correct */
997 /* work around 'winbind use default domain = yes' */
998
999 if ( !strchr_m( pw->pw_name, *lp_winbind_separator() ) ) {
1000 char *domain;
1001
1002 /* split the domain and username into 2 strings */
1003 *p = '\0';
1004 domain = username;
1005
1006 fstr_sprintf(save_username, "%s%c%s", domain, *lp_winbind_separator(), pw->pw_name);
1007 }
1008 else
1009 fstrcpy( save_username, pw->pw_name );
1010
1011 /* whew -- done! */
1012 return pw;
1013 }
1014
1015 /* setup for lookup of just the username */
1016 /* remember that p and username are overlapping memory */
1017
1018 p++;
1019 fstrcpy( strip_username, p );
1020 fstrcpy( username, strip_username );
1021 }
1022
1023 /* just lookup a plain username */
1024
1025 pw = Get_Pwnam(username);
1026
1027 /* Create local user if requested. */
1028
1029 if ( !pw && create ) {
1030 /* Don't add a machine account. */
1031 if (username[strlen(username)-1] == '$')
1032 return NULL;
1033
1034 auth_add_user_script(NULL, username);
1035 pw = Get_Pwnam(username);
1036 }
1037
1038 /* one last check for a valid passwd struct */
1039
1040 if ( pw )
1041 fstrcpy( save_username, pw->pw_name );
1042
1043 return pw;
1044 }
1045
1046 /***************************************************************************
1047 Make a server_info struct from the info3 returned by a domain logon
1048 ***************************************************************************/
1049
1050 NTSTATUS make_server_info_info3(TALLOC_CTX *mem_ctx,
1051 const char *internal_username,
1052 const char *sent_nt_username,
1053 const char *domain,
1054 auth_serversupplied_info **server_info,
1055 NET_USER_INFO_3 *info3)
1056 {
1057 static const char zeros[16];
1058
1059 NTSTATUS nt_status = NT_STATUS_OK;
1060 char *found_username;
1061 const char *nt_domain;
1062 const char *nt_username;
1063
1064 SAM_ACCOUNT *sam_account = NULL;
1065 DOM_SID user_sid;
1066 DOM_SID group_sid;
1067
1068 uid_t uid;
1069 gid_t gid;
1070
1071 int n_lgroupSIDs;
1072 DOM_SID *lgroupSIDs = NULL;
1073
1074 gid_t *unix_groups = NULL;
1075 NT_USER_TOKEN *token;
1076
1077 DOM_SID *all_group_SIDs;
1078 size_t i;
1079
1080 /*
1081 Here is where we should check the list of
1082 trusted domains, and verify that the SID
1083 matches.
1084 */
1085
1086 sid_copy(&user_sid, &info3->dom_sid.sid);
1087 if (!sid_append_rid(&user_sid, info3->user_rid)) {
1088 return NT_STATUS_INVALID_PARAMETER;
1089 }
1090
1091 sid_copy(&group_sid, &info3->dom_sid.sid);
1092 if (!sid_append_rid(&group_sid, info3->group_rid)) {
1093 return NT_STATUS_INVALID_PARAMETER;
1094 }
1095
1096 if (!(nt_username = unistr2_tdup(mem_ctx, &(info3->uni_user_name)))) {
1097 /* If the server didn't give us one, just use the one we sent them */
1098 nt_username = sent_nt_username;
1099 }
1100
1101 if (!(nt_domain = unistr2_tdup(mem_ctx, &(info3->uni_logon_dom)))) {
1102 /* If the server didn't give us one, just use the one we sent them */
1103 nt_domain = domain;
1104 }
1105
1106 /* try to fill the SAM account.. If getpwnam() fails, then try the
1107 add user script (2.2.x behavior) */
1108
1109 nt_status = fill_sam_account(mem_ctx, nt_domain, internal_username,
1110 &found_username, &uid, &gid, &sam_account);
1111
1112 if (NT_STATUS_EQUAL(nt_status, NT_STATUS_NO_SUCH_USER)) {
1113 DEBUG(3,("User %s does not exist, trying to add it\n",
1114 internal_username));
1115 auth_add_user_script(nt_domain, internal_username);
1116 nt_status = fill_sam_account(mem_ctx, nt_domain,
1117 internal_username, &found_username,
1118 &uid, &gid, &sam_account);
1119 }
1120
1121 if (!NT_STATUS_IS_OK(nt_status)) {
1122 DEBUG(0, ("make_server_info_info3: pdb_init_sam failed!\n"));
1123 return nt_status;
1124 }
1125
1126 if (!pdb_set_nt_username(sam_account, nt_username, PDB_CHANGED)) {
1127 pdb_free_sam(&sam_account);
1128 return NT_STATUS_NO_MEMORY;
1129 }
1130
1131 if (!pdb_set_username(sam_account, nt_username, PDB_CHANGED)) {
1132 pdb_free_sam(&sam_account);
1133 return NT_STATUS_NO_MEMORY;
1134 }
1135
1136 if (!pdb_set_domain(sam_account, nt_domain, PDB_CHANGED)) {
1137 pdb_free_sam(&sam_account);
1138 return NT_STATUS_NO_MEMORY;
1139 }
1140
1141 if (!pdb_set_user_sid(sam_account, &user_sid, PDB_CHANGED)) {
1142 pdb_free_sam(&sam_account);
1143 return NT_STATUS_UNSUCCESSFUL;
1144 }
1145
1146 if (!pdb_set_group_sid(sam_account, &group_sid, PDB_CHANGED)) {
1147 pdb_free_sam(&sam_account);
1148 return NT_STATUS_UNSUCCESSFUL;
1149 }
1150
1151 if (!pdb_set_fullname(sam_account, unistr2_static(&(info3->uni_full_name)),
1152 PDB_CHANGED)) {
1153 pdb_free_sam(&sam_account);
1154 return NT_STATUS_NO_MEMORY;
1155 }
1156
1157 if (!pdb_set_logon_script(sam_account, unistr2_static(&(info3->uni_logon_script)), PDB_CHANGED)) {
1158 pdb_free_sam(&sam_account);
1159 return NT_STATUS_NO_MEMORY;
1160 }
1161
1162 if (!pdb_set_profile_path(sam_account, unistr2_static(&(info3->uni_profile_path)), PDB_CHANGED)) {
1163 pdb_free_sam(&sam_account);
1164 return NT_STATUS_NO_MEMORY;
1165 }
1166
1167 if (!pdb_set_homedir(sam_account, unistr2_static(&(info3->uni_home_dir)), PDB_CHANGED)) {
1168 pdb_free_sam(&sam_account);
1169 return NT_STATUS_NO_MEMORY;
1170 }
1171
1172 if (!pdb_set_dir_drive(sam_account, unistr2_static(&(info3->uni_dir_drive)), PDB_CHANGED)) {
1173 pdb_free_sam(&sam_account);
1174 return NT_STATUS_NO_MEMORY;
1175 }
1176
1177 if (!NT_STATUS_IS_OK(nt_status = make_server_info(server_info))) {
1178 DEBUG(4, ("make_server_info failed!\n"));
1179 pdb_free_sam(&sam_account);
1180 return nt_status;
1181 }
1182
1183 /* save this here to _net_sam_logon() doesn't fail (it assumes a
1184 valid SAM_ACCOUNT) */
1185
1186 (*server_info)->sam_account = sam_account;
1187
1188 (*server_info)->unix_name = smb_xstrdup(found_username);
1189
1190 /* Fill in the unix info we found on the way */
1191
1192 (*server_info)->sam_fill_level = SAM_FILL_ALL;
1193 (*server_info)->uid = uid;
1194 (*server_info)->gid = gid;
1195
1196 /* Store the user group information in the server_info
1197 returned to the caller. */
1198
1199 nt_status = get_user_groups((*server_info)->unix_name,
1200 uid, gid, &n_lgroupSIDs, &lgroupSIDs, &unix_groups);
1201
1202 if ( !NT_STATUS_IS_OK(nt_status) ) {
1203 DEBUG(4,("get_user_groups failed\n"));
1204 return nt_status;
1205 }
1206
1207 (*server_info)->groups = unix_groups;
1208 (*server_info)->n_groups = n_lgroupSIDs;
1209
1210 /* Create a 'combined' list of all SIDs we might want in the SD */
1211
1212 all_group_SIDs = malloc(sizeof(DOM_SID) * (info3->num_groups2 + info3->num_other_sids + n_lgroupSIDs));
1213
1214 if (!all_group_SIDs) {
1215 DEBUG(0, ("malloc() failed for DOM_SID list!\n"));
1216 SAFE_FREE(lgroupSIDs);
1217 free_server_info(server_info);
1218 return NT_STATUS_NO_MEMORY;
1219 }
1220
1221 /* and create (by appending rids) the 'domain' sids */
1222
1223 for (i = 0; i < info3->num_groups2; i++) {
1224
1225 sid_copy(&all_group_SIDs[i], &(info3->dom_sid.sid));
1226
1227 if (!sid_append_rid(&all_group_SIDs[i], info3->gids[i].g_rid)) {
1228
1229 nt_status = NT_STATUS_INVALID_PARAMETER;
1230
1231 DEBUG(3,("could not append additional group rid 0x%x\n",
1232 info3->gids[i].g_rid));
1233
1234 SAFE_FREE(lgroupSIDs);
1235 SAFE_FREE(all_group_SIDs);
1236 free_server_info(server_info);
1237
1238 return nt_status;
1239
1240 }
1241 }
1242
1243 /* Copy 'other' sids. We need to do sid filtering here to
1244 prevent possible elevation of privileges. See:
1245
1246 http://www.microsoft.com/windows2000/techinfo/administration/security/sidfilter.asp
1247 */
1248
1249 for (i = 0; i < info3->num_other_sids; i++) {
1250 sid_copy(&all_group_SIDs[info3->num_groups2 + i],
1251 &info3->other_sids[i].sid);
1252 }
1253
1254
1255 /* add local alias sids */
1256
1257 for (i = 0; i < n_lgroupSIDs; i++) {
1258 sid_copy(&all_group_SIDs[info3->num_groups2 +
1259 info3->num_other_sids + i],
1260 &lgroupSIDs[i]);
1261 }
1262
1263 /* Where are the 'global' sids... */
1264
1265 /* can the user be guest? if yes, where is it stored? */
1266
1267 nt_status = create_nt_user_token(&user_sid, &group_sid,
1268 info3->num_groups2 + info3->num_other_sids + n_lgroupSIDs,
1269 all_group_SIDs, False, &token);
1270
1271 if ( !NT_STATUS_IS_OK(nt_status) ) {
1272 DEBUG(4,("create_nt_user_token failed\n"));
1273 SAFE_FREE(lgroupSIDs);
1274 SAFE_FREE(all_group_SIDs);
1275 free_server_info(server_info);
1276 return nt_status;
1277 }
1278
1279 (*server_info)->ptok = token;
1280
1281 SAFE_FREE(lgroupSIDs);
1282 SAFE_FREE(all_group_SIDs);
1283
1284 /* ensure we are never given NULL session keys */
1285
1286 if (memcmp(info3->user_sess_key, zeros, sizeof(zeros)) == 0) {
1287 (*server_info)->user_session_key = data_blob(NULL, 0);
1288 } else {
1289 (*server_info)->user_session_key = data_blob(info3->user_sess_key, sizeof(info3->user_sess_key));
1290 }
1291
1292 if (memcmp(info3->padding, zeros, sizeof(zeros)) == 0) {
1293 (*server_info)->lm_session_key = data_blob(NULL, 0);
1294 } else {
1295 (*server_info)->lm_session_key = data_blob(info3->padding, 16);
1296 }
1297 return NT_STATUS_OK;
1298 }
1299
1300 /***************************************************************************
1301 Free a user_info struct
1302 ***************************************************************************/
1303
1304 void free_user_info(auth_usersupplied_info **user_info)
1305 {
1306 DEBUG(5,("attempting to free (and zero) a user_info structure\n"));
1307 if (*user_info != NULL) {
1308 if ((*user_info)->smb_name.str) {
1309 DEBUG(10,("structure was created for %s\n", (*user_info)->smb_name.str));
1310 }
1311 SAFE_FREE((*user_info)->smb_name.str);
1312 SAFE_FREE((*user_info)->internal_username.str);
1313 SAFE_FREE((*user_info)->client_domain.str);
1314 SAFE_FREE((*user_info)->domain.str);
1315 SAFE_FREE((*user_info)->wksta_name.str);
1316 data_blob_free(&(*user_info)->lm_resp);
1317 data_blob_free(&(*user_info)->nt_resp);
1318 data_blob_clear_free(&(*user_info)->lm_interactive_pwd);
1319 data_blob_clear_free(&(*user_info)->nt_interactive_pwd);
1320 data_blob_clear_free(&(*user_info)->plaintext_password);
1321 ZERO_STRUCT(**user_info);
1322 }
1323 SAFE_FREE(*user_info);
1324 }
1325
1326 /***************************************************************************
1327 Clear out a server_info struct that has been allocated
1328 ***************************************************************************/
1329
1330 void free_server_info(auth_serversupplied_info **server_info)
1331 {
1332 DEBUG(5,("attempting to free (and zero) a server_info structure\n"));
1333 if (*server_info != NULL) {
1334 pdb_free_sam(&(*server_info)->sam_account);
1335
1336 /* call pam_end here, unless we know we are keeping it */
1337 delete_nt_token( &(*server_info)->ptok );
1338 SAFE_FREE((*server_info)->groups);
1339 SAFE_FREE((*server_info)->unix_name);
1340 data_blob_free(&(*server_info)->lm_session_key);
1341 data_blob_free(&(*server_info)->user_session_key);
1342 ZERO_STRUCT(**server_info);
1343 }
1344 SAFE_FREE(*server_info);
1345 }
1346
1347 /***************************************************************************
1348 Make an auth_methods struct
1349 ***************************************************************************/
1350
1351 BOOL make_auth_methods(struct auth_context *auth_context, auth_methods **auth_method)
1352 {
1353 if (!auth_context) {
1354 smb_panic("no auth_context supplied to make_auth_methods()!\n");
1355 }
1356
1357 if (!auth_method) {
1358 smb_panic("make_auth_methods: pointer to auth_method pointer is NULL!\n");
1359 }
1360
1361 *auth_method = talloc(auth_context->mem_ctx, sizeof(**auth_method));
1362 if (!*auth_method) {
1363 DEBUG(0,("make_auth_method: malloc failed!\n"));
1364 return False;
1365 }
1366 ZERO_STRUCTP(*auth_method);
1367
1368 return True;
1369 }
1370
1371 /****************************************************************************
1372 Delete a SID token.
1373 ****************************************************************************/
1374
1375 void delete_nt_token(NT_USER_TOKEN **pptoken)
1376 {
1377 if (*pptoken) {
1378 NT_USER_TOKEN *ptoken = *pptoken;
1379 SAFE_FREE( ptoken->user_sids );
1380 ZERO_STRUCTP(ptoken);
1381 }
1382 SAFE_FREE(*pptoken);
1383 }
1384
1385 /****************************************************************************
1386 Duplicate a SID token.
1387 ****************************************************************************/
1388
1389 NT_USER_TOKEN *dup_nt_token(NT_USER_TOKEN *ptoken)
1390 {
1391 NT_USER_TOKEN *token;
1392
1393 if (!ptoken)
1394 return NULL;
1395
1396 if ((token = (NT_USER_TOKEN *)malloc( sizeof(NT_USER_TOKEN) ) ) == NULL)
1397 return NULL;
1398
1399 ZERO_STRUCTP(token);
1400
1401 if ((token->user_sids = (DOM_SID *)memdup( ptoken->user_sids, sizeof(DOM_SID) * ptoken->num_sids )) == NULL) {
1402 SAFE_FREE(token);
1403 return NULL;
1404 }
1405
1406 token->num_sids = ptoken->num_sids;
1407
1408 return token;
1409 }
1410
1411 /**
1412 * Verify whether or not given domain is trusted.
1413 *
1414 * @param domain_name name of the domain to be verified
1415 * @return true if domain is one of the trusted once or
1416 * false if otherwise
1417 **/
1418
1419 BOOL is_trusted_domain(const char* dom_name)
1420 {
1421 DOM_SID trustdom_sid;
1422 char *pass = NULL;
1423 time_t lct;
1424 BOOL ret;
1425
1426 /* no trusted domains for a standalone server */
1427
1428 if ( lp_server_role() == ROLE_STANDALONE )
1429 return False;
1430
1431 /* if we are a DC, then check for a direct trust relationships */
1432
1433 if ( IS_DC ) {
1434 become_root();
1435 DEBUG (5,("is_trusted_domain: Checking for domain trust with [%s]\n",
1436 dom_name ));
1437 ret = secrets_fetch_trusted_domain_password(dom_name, &pass, &trustdom_sid, &lct);
1438 unbecome_root();
1439 SAFE_FREE(pass);
1440 if (ret)
1441 return True;
1442 }
1443 else {
1444 /* if winbindd is not up and we are a domain member) then we need to update the
1445 trustdom_cache ourselves */
1446
1447 if ( !winbind_ping() )
1448 update_trustdom_cache();
1449 }
1450
1451 /* now the trustdom cache should be available a DC could still
1452 * have a transitive trust so fall back to the cache of trusted
1453 * domains (like a domain member would use */
1454
1455 if ( trustdom_cache_fetch(dom_name, &trustdom_sid) ) {
1456 return True;
1457 }
1458
1459 return False;
1460 }
1461
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