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r4231: commiting changes to 3.0.10
[Samba.git] / source / auth / auth_util.c
bloba10482cf2e030070ee5bba7c1e484c12293cd145
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 = SMB_MALLOC_P(auth_usersupplied_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 = SMB_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 = SMB_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 = SMB_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 = SMB_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 = SMB_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 = SMB_MALLOC_P(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 = SMB_MALLOC_ARRAY( 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 = SMB_MALLOC_ARRAY(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 = SMB_MALLOC_ARRAY( 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 = SMB_REALLOC_ARRAY(*unix_groups, 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 = SMB_MALLOC_ARRAY(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 = SMB_MALLOC_P(auth_serversupplied_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, lower_username;
934 fstring real_username;
935 struct passwd *passwd;
936
937 fstrcpy( lower_username, username );
938 strlower_m( lower_username );
939
940 fstr_sprintf(dom_user, "%s%c%s", domain, *lp_winbind_separator(),
941 lower_username);
942
943 /* get the passwd struct but don't create the user if he/she
944 does not exist. We were explicitly called from a following
945 a winbindd authentication request so we should assume that
946 nss_winbindd is working */
947
948 map_username( dom_user );
949
950 if ( !(passwd = smb_getpwnam( dom_user, real_username, True )) )
951 return NT_STATUS_NO_SUCH_USER;
952
953 *uid = passwd->pw_uid;
954 *gid = passwd->pw_gid;
955
956 /* This is pointless -- there is no suport for differing
957 unix and windows names. Make sure to always store the
958 one we actually looked up and succeeded. Have I mentioned
959 why I hate the 'winbind use default domain' parameter?
960 --jerry */
961
962 *found_username = talloc_strdup( mem_ctx, real_username );
963
964 DEBUG(5,("fill_sam_account: located username was [%s]\n",
965 *found_username));
966
967 return pdb_init_sam_pw(sam_account, passwd);
968 }
969
970 /****************************************************************************
971 Wrapper to allow the getpwnam() call to strip the domain name and
972 try again in case a local UNIX user is already there. Also run through
973 the username if we fallback to the username only.
974 ****************************************************************************/
975
976 struct passwd *smb_getpwnam( char *domuser, fstring save_username, BOOL create )
977 {
978 struct passwd *pw = NULL;
979 char *p;
980 fstring username;
981
982 /* we only save a copy of the username it has been mangled
983 by winbindd use default domain */
984
985 save_username[0] = '\0';
986
987 /* don't call map_username() here since it has to be done higher
988 up the stack so we don't call it mutliple times */
989
990 fstrcpy( username, domuser );
991
992 p = strchr_m( username, *lp_winbind_separator() );
993
994 /* code for a DOMAIN\user string */
995
996 if ( p ) {
997 fstring strip_username;
998
999 pw = Get_Pwnam( domuser );
1000 if ( pw ) {
1001 /* make sure we get the case of the username correct */
1002 /* work around 'winbind use default domain = yes' */
1003
1004 if ( !strchr_m( pw->pw_name, *lp_winbind_separator() ) ) {
1005 char *domain;
1006
1007 /* split the domain and username into 2 strings */
1008 *p = '\0';
1009 domain = username;
1010
1011 fstr_sprintf(save_username, "%s%c%s", domain, *lp_winbind_separator(), pw->pw_name);
1012 }
1013 else
1014 fstrcpy( save_username, pw->pw_name );
1015
1016 /* whew -- done! */
1017 return pw;
1018 }
1019
1020 /* setup for lookup of just the username */
1021 /* remember that p and username are overlapping memory */
1022
1023 p++;
1024 fstrcpy( strip_username, p );
1025 fstrcpy( username, strip_username );
1026 }
1027
1028 /* just lookup a plain username */
1029
1030 pw = Get_Pwnam(username);
1031
1032 /* Create local user if requested. */
1033
1034 if ( !pw && create ) {
1035 /* Don't add a machine account. */
1036 if (username[strlen(username)-1] == '$')
1037 return NULL;
1038
1039 auth_add_user_script(NULL, username);
1040 pw = Get_Pwnam(username);
1041 }
1042
1043 /* one last check for a valid passwd struct */
1044
1045 if ( pw )
1046 fstrcpy( save_username, pw->pw_name );
1047
1048 return pw;
1049 }
1050
1051 /***************************************************************************
1052 Make a server_info struct from the info3 returned by a domain logon
1053 ***************************************************************************/
1054
1055 NTSTATUS make_server_info_info3(TALLOC_CTX *mem_ctx,
1056 const char *internal_username,
1057 const char *sent_nt_username,
1058 const char *domain,
1059 auth_serversupplied_info **server_info,
1060 NET_USER_INFO_3 *info3)
1061 {
1062 static const char zeros[16];
1063
1064 NTSTATUS nt_status = NT_STATUS_OK;
1065 char *found_username;
1066 const char *nt_domain;
1067 const char *nt_username;
1068
1069 SAM_ACCOUNT *sam_account = NULL;
1070 DOM_SID user_sid;
1071 DOM_SID group_sid;
1072
1073 uid_t uid;
1074 gid_t gid;
1075
1076 int n_lgroupSIDs;
1077 DOM_SID *lgroupSIDs = NULL;
1078
1079 gid_t *unix_groups = NULL;
1080 NT_USER_TOKEN *token;
1081
1082 DOM_SID *all_group_SIDs;
1083 size_t i;
1084
1085 /*
1086 Here is where we should check the list of
1087 trusted domains, and verify that the SID
1088 matches.
1089 */
1090
1091 sid_copy(&user_sid, &info3->dom_sid.sid);
1092 if (!sid_append_rid(&user_sid, info3->user_rid)) {
1093 return NT_STATUS_INVALID_PARAMETER;
1094 }
1095
1096 sid_copy(&group_sid, &info3->dom_sid.sid);
1097 if (!sid_append_rid(&group_sid, info3->group_rid)) {
1098 return NT_STATUS_INVALID_PARAMETER;
1099 }
1100
1101 if (!(nt_username = unistr2_tdup(mem_ctx, &(info3->uni_user_name)))) {
1102 /* If the server didn't give us one, just use the one we sent them */
1103 nt_username = sent_nt_username;
1104 }
1105
1106 if (!(nt_domain = unistr2_tdup(mem_ctx, &(info3->uni_logon_dom)))) {
1107 /* If the server didn't give us one, just use the one we sent them */
1108 nt_domain = domain;
1109 }
1110
1111 /* try to fill the SAM account.. If getpwnam() fails, then try the
1112 add user script (2.2.x behavior).
1113
1114 We use the _unmapped_ username here in an attempt to provide
1115 consistent username mapping behavior between kerberos and NTLM[SSP]
1116 authentication in domain mode security. I.E. Username mapping should
1117 be applied to the fully qualified username (e.g. DOMAIN\user) and
1118 no just the login name. Yes this mean swe called map_username()
1119 unnecessarily in make_user_info_map() but that is how the current
1120 code is designed. Making the change here is the least disruptive
1121 place. -- jerry */
1122
1123 nt_status = fill_sam_account(mem_ctx, nt_domain, sent_nt_username,
1124 &found_username, &uid, &gid, &sam_account);
1125
1126 if (NT_STATUS_EQUAL(nt_status, NT_STATUS_NO_SUCH_USER)) {
1127 DEBUG(3,("User %s does not exist, trying to add it\n", internal_username));
1128 auth_add_user_script( nt_domain, sent_nt_username );
1129 nt_status = fill_sam_account( mem_ctx, nt_domain, sent_nt_username,
1130 &found_username, &uid, &gid, &sam_account );
1131 }
1132
1133 if (!NT_STATUS_IS_OK(nt_status)) {
1134 DEBUG(0, ("make_server_info_info3: pdb_init_sam failed!\n"));
1135 return nt_status;
1136 }
1137
1138 if (!pdb_set_nt_username(sam_account, nt_username, PDB_CHANGED)) {
1139 pdb_free_sam(&sam_account);
1140 return NT_STATUS_NO_MEMORY;
1141 }
1142
1143 if (!pdb_set_username(sam_account, nt_username, PDB_CHANGED)) {
1144 pdb_free_sam(&sam_account);
1145 return NT_STATUS_NO_MEMORY;
1146 }
1147
1148 if (!pdb_set_domain(sam_account, nt_domain, PDB_CHANGED)) {
1149 pdb_free_sam(&sam_account);
1150 return NT_STATUS_NO_MEMORY;
1151 }
1152
1153 if (!pdb_set_user_sid(sam_account, &user_sid, PDB_CHANGED)) {
1154 pdb_free_sam(&sam_account);
1155 return NT_STATUS_UNSUCCESSFUL;
1156 }
1157
1158 if (!pdb_set_group_sid(sam_account, &group_sid, PDB_CHANGED)) {
1159 pdb_free_sam(&sam_account);
1160 return NT_STATUS_UNSUCCESSFUL;
1161 }
1162
1163 if (!pdb_set_fullname(sam_account, unistr2_static(&(info3->uni_full_name)),
1164 PDB_CHANGED)) {
1165 pdb_free_sam(&sam_account);
1166 return NT_STATUS_NO_MEMORY;
1167 }
1168
1169 if (!pdb_set_logon_script(sam_account, unistr2_static(&(info3->uni_logon_script)), PDB_CHANGED)) {
1170 pdb_free_sam(&sam_account);
1171 return NT_STATUS_NO_MEMORY;
1172 }
1173
1174 if (!pdb_set_profile_path(sam_account, unistr2_static(&(info3->uni_profile_path)), PDB_CHANGED)) {
1175 pdb_free_sam(&sam_account);
1176 return NT_STATUS_NO_MEMORY;
1177 }
1178
1179 if (!pdb_set_homedir(sam_account, unistr2_static(&(info3->uni_home_dir)), PDB_CHANGED)) {
1180 pdb_free_sam(&sam_account);
1181 return NT_STATUS_NO_MEMORY;
1182 }
1183
1184 if (!pdb_set_dir_drive(sam_account, unistr2_static(&(info3->uni_dir_drive)), PDB_CHANGED)) {
1185 pdb_free_sam(&sam_account);
1186 return NT_STATUS_NO_MEMORY;
1187 }
1188
1189 if (!NT_STATUS_IS_OK(nt_status = make_server_info(server_info))) {
1190 DEBUG(4, ("make_server_info failed!\n"));
1191 pdb_free_sam(&sam_account);
1192 return nt_status;
1193 }
1194
1195 /* save this here to _net_sam_logon() doesn't fail (it assumes a
1196 valid SAM_ACCOUNT) */
1197
1198 (*server_info)->sam_account = sam_account;
1199
1200 (*server_info)->unix_name = smb_xstrdup(found_username);
1201
1202 /* Fill in the unix info we found on the way */
1203
1204 (*server_info)->sam_fill_level = SAM_FILL_ALL;
1205 (*server_info)->uid = uid;
1206 (*server_info)->gid = gid;
1207
1208 /* Store the user group information in the server_info
1209 returned to the caller. */
1210
1211 nt_status = get_user_groups((*server_info)->unix_name,
1212 uid, gid, &n_lgroupSIDs, &lgroupSIDs, &unix_groups);
1213
1214 if ( !NT_STATUS_IS_OK(nt_status) ) {
1215 DEBUG(4,("get_user_groups failed\n"));
1216 return nt_status;
1217 }
1218
1219 (*server_info)->groups = unix_groups;
1220 (*server_info)->n_groups = n_lgroupSIDs;
1221
1222 /* Create a 'combined' list of all SIDs we might want in the SD */
1223
1224 all_group_SIDs = SMB_MALLOC_ARRAY(DOM_SID,info3->num_groups2 + info3->num_other_sids + n_lgroupSIDs);
1225
1226 if (!all_group_SIDs) {
1227 DEBUG(0, ("malloc() failed for DOM_SID list!\n"));
1228 SAFE_FREE(lgroupSIDs);
1229 free_server_info(server_info);
1230 return NT_STATUS_NO_MEMORY;
1231 }
1232
1233 /* and create (by appending rids) the 'domain' sids */
1234
1235 for (i = 0; i < info3->num_groups2; i++) {
1236
1237 sid_copy(&all_group_SIDs[i], &(info3->dom_sid.sid));
1238
1239 if (!sid_append_rid(&all_group_SIDs[i], info3->gids[i].g_rid)) {
1240
1241 nt_status = NT_STATUS_INVALID_PARAMETER;
1242
1243 DEBUG(3,("could not append additional group rid 0x%x\n",
1244 info3->gids[i].g_rid));
1245
1246 SAFE_FREE(lgroupSIDs);
1247 SAFE_FREE(all_group_SIDs);
1248 free_server_info(server_info);
1249
1250 return nt_status;
1251
1252 }
1253 }
1254
1255 /* Copy 'other' sids. We need to do sid filtering here to
1256 prevent possible elevation of privileges. See:
1257
1258 http://www.microsoft.com/windows2000/techinfo/administration/security/sidfilter.asp
1259 */
1260
1261 for (i = 0; i < info3->num_other_sids; i++) {
1262 sid_copy(&all_group_SIDs[info3->num_groups2 + i],
1263 &info3->other_sids[i].sid);
1264 }
1265
1266
1267 /* add local alias sids */
1268
1269 for (i = 0; i < n_lgroupSIDs; i++) {
1270 sid_copy(&all_group_SIDs[info3->num_groups2 +
1271 info3->num_other_sids + i],
1272 &lgroupSIDs[i]);
1273 }
1274
1275 /* Where are the 'global' sids... */
1276
1277 /* can the user be guest? if yes, where is it stored? */
1278
1279 nt_status = create_nt_user_token(&user_sid, &group_sid,
1280 info3->num_groups2 + info3->num_other_sids + n_lgroupSIDs,
1281 all_group_SIDs, False, &token);
1282
1283 if ( !NT_STATUS_IS_OK(nt_status) ) {
1284 DEBUG(4,("create_nt_user_token failed\n"));
1285 SAFE_FREE(lgroupSIDs);
1286 SAFE_FREE(all_group_SIDs);
1287 free_server_info(server_info);
1288 return nt_status;
1289 }
1290
1291 (*server_info)->ptok = token;
1292
1293 SAFE_FREE(lgroupSIDs);
1294 SAFE_FREE(all_group_SIDs);
1295
1296 /* ensure we are never given NULL session keys */
1297
1298 if (memcmp(info3->user_sess_key, zeros, sizeof(zeros)) == 0) {
1299 (*server_info)->user_session_key = data_blob(NULL, 0);
1300 } else {
1301 (*server_info)->user_session_key = data_blob(info3->user_sess_key, sizeof(info3->user_sess_key));
1302 }
1303
1304 if (memcmp(info3->padding, zeros, sizeof(zeros)) == 0) {
1305 (*server_info)->lm_session_key = data_blob(NULL, 0);
1306 } else {
1307 (*server_info)->lm_session_key = data_blob(info3->padding, 16);
1308 }
1309 return NT_STATUS_OK;
1310 }
1311
1312 /***************************************************************************
1313 Free a user_info struct
1314 ***************************************************************************/
1315
1316 void free_user_info(auth_usersupplied_info **user_info)
1317 {
1318 DEBUG(5,("attempting to free (and zero) a user_info structure\n"));
1319 if (*user_info != NULL) {
1320 if ((*user_info)->smb_name.str) {
1321 DEBUG(10,("structure was created for %s\n", (*user_info)->smb_name.str));
1322 }
1323 SAFE_FREE((*user_info)->smb_name.str);
1324 SAFE_FREE((*user_info)->internal_username.str);
1325 SAFE_FREE((*user_info)->client_domain.str);
1326 SAFE_FREE((*user_info)->domain.str);
1327 SAFE_FREE((*user_info)->wksta_name.str);
1328 data_blob_free(&(*user_info)->lm_resp);
1329 data_blob_free(&(*user_info)->nt_resp);
1330 data_blob_clear_free(&(*user_info)->lm_interactive_pwd);
1331 data_blob_clear_free(&(*user_info)->nt_interactive_pwd);
1332 data_blob_clear_free(&(*user_info)->plaintext_password);
1333 ZERO_STRUCT(**user_info);
1334 }
1335 SAFE_FREE(*user_info);
1336 }
1337
1338 /***************************************************************************
1339 Clear out a server_info struct that has been allocated
1340 ***************************************************************************/
1341
1342 void free_server_info(auth_serversupplied_info **server_info)
1343 {
1344 DEBUG(5,("attempting to free (and zero) a server_info structure\n"));
1345 if (*server_info != NULL) {
1346 pdb_free_sam(&(*server_info)->sam_account);
1347
1348 /* call pam_end here, unless we know we are keeping it */
1349 delete_nt_token( &(*server_info)->ptok );
1350 SAFE_FREE((*server_info)->groups);
1351 SAFE_FREE((*server_info)->unix_name);
1352 data_blob_free(&(*server_info)->lm_session_key);
1353 data_blob_free(&(*server_info)->user_session_key);
1354 ZERO_STRUCT(**server_info);
1355 }
1356 SAFE_FREE(*server_info);
1357 }
1358
1359 /***************************************************************************
1360 Make an auth_methods struct
1361 ***************************************************************************/
1362
1363 BOOL make_auth_methods(struct auth_context *auth_context, auth_methods **auth_method)
1364 {
1365 if (!auth_context) {
1366 smb_panic("no auth_context supplied to make_auth_methods()!\n");
1367 }
1368
1369 if (!auth_method) {
1370 smb_panic("make_auth_methods: pointer to auth_method pointer is NULL!\n");
1371 }
1372
1373 *auth_method = TALLOC_P(auth_context->mem_ctx, auth_methods);
1374 if (!*auth_method) {
1375 DEBUG(0,("make_auth_method: malloc failed!\n"));
1376 return False;
1377 }
1378 ZERO_STRUCTP(*auth_method);
1379
1380 return True;
1381 }
1382
1383 /****************************************************************************
1384 Delete a SID token.
1385 ****************************************************************************/
1386
1387 void delete_nt_token(NT_USER_TOKEN **pptoken)
1388 {
1389 if (*pptoken) {
1390 NT_USER_TOKEN *ptoken = *pptoken;
1391 SAFE_FREE( ptoken->user_sids );
1392 ZERO_STRUCTP(ptoken);
1393 }
1394 SAFE_FREE(*pptoken);
1395 }
1396
1397 /****************************************************************************
1398 Duplicate a SID token.
1399 ****************************************************************************/
1400
1401 NT_USER_TOKEN *dup_nt_token(NT_USER_TOKEN *ptoken)
1402 {
1403 NT_USER_TOKEN *token;
1404
1405 if (!ptoken)
1406 return NULL;
1407
1408 if ((token = SMB_MALLOC_P(NT_USER_TOKEN)) == NULL)
1409 return NULL;
1410
1411 ZERO_STRUCTP(token);
1412
1413 if ((token->user_sids = (DOM_SID *)memdup( ptoken->user_sids, sizeof(DOM_SID) * ptoken->num_sids )) == NULL) {
1414 SAFE_FREE(token);
1415 return NULL;
1416 }
1417
1418 token->num_sids = ptoken->num_sids;
1419
1420 return token;
1421 }
1422
1423 /**
1424 * Verify whether or not given domain is trusted.
1425 *
1426 * @param domain_name name of the domain to be verified
1427 * @return true if domain is one of the trusted once or
1428 * false if otherwise
1429 **/
1430
1431 BOOL is_trusted_domain(const char* dom_name)
1432 {
1433 DOM_SID trustdom_sid;
1434 char *pass = NULL;
1435 time_t lct;
1436 BOOL ret;
1437
1438 /* no trusted domains for a standalone server */
1439
1440 if ( lp_server_role() == ROLE_STANDALONE )
1441 return False;
1442
1443 /* if we are a DC, then check for a direct trust relationships */
1444
1445 if ( IS_DC ) {
1446 become_root();
1447 DEBUG (5,("is_trusted_domain: Checking for domain trust with [%s]\n",
1448 dom_name ));
1449 ret = secrets_fetch_trusted_domain_password(dom_name, &pass, &trustdom_sid, &lct);
1450 unbecome_root();
1451 SAFE_FREE(pass);
1452 if (ret)
1453 return True;
1454 }
1455 else {
1456 /* if winbindd is not up and we are a domain member) then we need to update the
1457 trustdom_cache ourselves */
1458
1459 if ( !winbind_ping() )
1460 update_trustdom_cache();
1461 }
1462
1463 /* now the trustdom cache should be available a DC could still
1464 * have a transitive trust so fall back to the cache of trusted
1465 * domains (like a domain member would use */
1466
1467 if ( trustdom_cache_fetch(dom_name, &trustdom_sid) ) {
1468 return True;
1469 }
1470
1471 return False;
1472 }
1473
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