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Skip over the winbind separator when looking up a user.
[Samba/gebeck_regimport.git] / source / auth / auth_util.c
blobd7d7f53e2d4898c7133d04c16591585c5695c877
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 plaintext,
129 uint32 auth_flags, BOOL encrypted)
130 {
131
132 DEBUG(5,("attempting to make a user_info for %s (%s)\n", internal_username, smb_name));
133
134 *user_info = malloc(sizeof(**user_info));
135 if (!user_info) {
136 DEBUG(0,("malloc failed for user_info (size %lu)\n", (unsigned long)sizeof(*user_info)));
137 return NT_STATUS_NO_MEMORY;
138 }
139
140 ZERO_STRUCTP(*user_info);
141
142 DEBUG(5,("making strings for %s's user_info struct\n", internal_username));
143
144 (*user_info)->smb_name.str = strdup(smb_name);
145 if ((*user_info)->smb_name.str) {
146 (*user_info)->smb_name.len = strlen(smb_name);
147 } else {
148 free_user_info(user_info);
149 return NT_STATUS_NO_MEMORY;
150 }
151
152 (*user_info)->internal_username.str = strdup(internal_username);
153 if ((*user_info)->internal_username.str) {
154 (*user_info)->internal_username.len = strlen(internal_username);
155 } else {
156 free_user_info(user_info);
157 return NT_STATUS_NO_MEMORY;
158 }
159
160 (*user_info)->domain.str = strdup(domain);
161 if ((*user_info)->domain.str) {
162 (*user_info)->domain.len = strlen(domain);
163 } else {
164 free_user_info(user_info);
165 return NT_STATUS_NO_MEMORY;
166 }
167
168 (*user_info)->client_domain.str = strdup(client_domain);
169 if ((*user_info)->client_domain.str) {
170 (*user_info)->client_domain.len = strlen(client_domain);
171 } else {
172 free_user_info(user_info);
173 return NT_STATUS_NO_MEMORY;
174 }
175
176 (*user_info)->wksta_name.str = strdup(wksta_name);
177 if ((*user_info)->wksta_name.str) {
178 (*user_info)->wksta_name.len = strlen(wksta_name);
179 } else {
180 free_user_info(user_info);
181 return NT_STATUS_NO_MEMORY;
182 }
183
184 DEBUG(5,("making blobs for %s's user_info struct\n", internal_username));
185
186 (*user_info)->lm_resp = data_blob(lm_pwd.data, lm_pwd.length);
187 (*user_info)->nt_resp = data_blob(nt_pwd.data, nt_pwd.length);
188 (*user_info)->plaintext_password = data_blob(plaintext.data, plaintext.length);
189
190 (*user_info)->encrypted = encrypted;
191 (*user_info)->auth_flags = auth_flags;
192
193 DEBUG(10,("made an %sencrypted user_info for %s (%s)\n", encrypted ? "":"un" , internal_username, smb_name));
194
195 return NT_STATUS_OK;
196 }
197
198 /****************************************************************************
199 Create an auth_usersupplied_data structure after appropriate mapping.
200 ****************************************************************************/
201
202 NTSTATUS make_user_info_map(auth_usersupplied_info **user_info,
203 const char *smb_name,
204 const char *client_domain,
205 const char *wksta_name,
206 DATA_BLOB lm_pwd, DATA_BLOB nt_pwd,
207 DATA_BLOB plaintext,
208 uint32 ntlmssp_flags, BOOL encrypted)
209 {
210 const char *domain;
211 fstring internal_username;
212 fstrcpy(internal_username, smb_name);
213 map_username(internal_username);
214
215 DEBUG(5, ("make_user_info_map: Mapping user [%s]\\[%s] from workstation [%s]\n",
216 client_domain, smb_name, wksta_name));
217
218 /* don't allow "" as a domain, fixes a Win9X bug
219 where it doens't supply a domain for logon script
220 'net use' commands. */
221
222 if ( *client_domain )
223 domain = client_domain;
224 else
225 domain = lp_workgroup();
226
227 /* do what win2k does. Always map unknown domains to our own
228 and let the "passdb backend" handle unknown users. */
229
230 if ( !is_trusted_domain(domain) && !strequal(domain, get_global_sam_name()) )
231 domain = get_default_sam_name();
232
233 /* we know that it is a trusted domain (and we are allowing them) or it is our domain */
234
235 return make_user_info(user_info, smb_name, internal_username,
236 client_domain, domain, wksta_name, lm_pwd, nt_pwd,
237 plaintext, ntlmssp_flags, encrypted);
238 }
239
240 /****************************************************************************
241 Create an auth_usersupplied_data, making the DATA_BLOBs here.
242 Decrypt and encrypt the passwords.
243 ****************************************************************************/
244
245 BOOL make_user_info_netlogon_network(auth_usersupplied_info **user_info,
246 const char *smb_name,
247 const char *client_domain,
248 const char *wksta_name,
249 const uchar *lm_network_pwd, int lm_pwd_len,
250 const uchar *nt_network_pwd, int nt_pwd_len)
251 {
252 BOOL ret;
253 NTSTATUS nt_status;
254 DATA_BLOB lm_blob = data_blob(lm_network_pwd, lm_pwd_len);
255 DATA_BLOB nt_blob = data_blob(nt_network_pwd, nt_pwd_len);
256 DATA_BLOB plaintext_blob = data_blob(NULL, 0);
257 uint32 auth_flags = AUTH_FLAG_NONE;
258
259 if (lm_pwd_len)
260 auth_flags |= AUTH_FLAG_LM_RESP;
261 if (nt_pwd_len == 24) {
262 auth_flags |= AUTH_FLAG_NTLM_RESP;
263 } else if (nt_pwd_len != 0) {
264 auth_flags |= AUTH_FLAG_NTLMv2_RESP;
265 }
266
267 nt_status = make_user_info_map(user_info,
268 smb_name, client_domain,
269 wksta_name,
270 lm_blob, nt_blob,
271 plaintext_blob,
272 auth_flags, True);
273
274 ret = NT_STATUS_IS_OK(nt_status) ? True : False;
275
276 data_blob_free(&lm_blob);
277 data_blob_free(&nt_blob);
278 return ret;
279 }
280
281 /****************************************************************************
282 Create an auth_usersupplied_data, making the DATA_BLOBs here.
283 Decrypt and encrypt the passwords.
284 ****************************************************************************/
285
286 BOOL make_user_info_netlogon_interactive(auth_usersupplied_info **user_info,
287 const char *smb_name,
288 const char *client_domain,
289 const char *wksta_name,
290 const uchar chal[8],
291 const uchar lm_interactive_pwd[16],
292 const uchar nt_interactive_pwd[16],
293 const uchar *dc_sess_key)
294 {
295 char lm_pwd[16];
296 char nt_pwd[16];
297 unsigned char local_lm_response[24];
298 unsigned char local_nt_response[24];
299 unsigned char key[16];
300 uint32 auth_flags = AUTH_FLAG_NONE;
301
302 ZERO_STRUCT(key);
303 memcpy(key, dc_sess_key, 8);
304
305 if (lm_interactive_pwd) memcpy(lm_pwd, lm_interactive_pwd, sizeof(lm_pwd));
306 if (nt_interactive_pwd) memcpy(nt_pwd, nt_interactive_pwd, sizeof(nt_pwd));
307
308 #ifdef DEBUG_PASSWORD
309 DEBUG(100,("key:"));
310 dump_data(100, (char *)key, sizeof(key));
311
312 DEBUG(100,("lm owf password:"));
313 dump_data(100, lm_pwd, sizeof(lm_pwd));
314
315 DEBUG(100,("nt owf password:"));
316 dump_data(100, nt_pwd, sizeof(nt_pwd));
317 #endif
318
319 SamOEMhash((uchar *)lm_pwd, key, sizeof(lm_pwd));
320 SamOEMhash((uchar *)nt_pwd, key, sizeof(nt_pwd));
321
322 #ifdef DEBUG_PASSWORD
323 DEBUG(100,("decrypt of lm owf password:"));
324 dump_data(100, lm_pwd, sizeof(lm_pwd));
325
326 DEBUG(100,("decrypt of nt owf password:"));
327 dump_data(100, nt_pwd, sizeof(nt_pwd));
328 #endif
329
330 SMBOWFencrypt((const unsigned char *)lm_pwd, chal, local_lm_response);
331 SMBOWFencrypt((const unsigned char *)nt_pwd, chal, local_nt_response);
332
333 /* Password info paranoia */
334 ZERO_STRUCT(lm_pwd);
335 ZERO_STRUCT(nt_pwd);
336 ZERO_STRUCT(key);
337
338 {
339 BOOL ret;
340 NTSTATUS nt_status;
341 DATA_BLOB local_lm_blob = data_blob(local_lm_response, sizeof(local_lm_response));
342 DATA_BLOB local_nt_blob = data_blob(local_nt_response, sizeof(local_nt_response));
343 DATA_BLOB plaintext_blob = data_blob(NULL, 0);
344
345 if (lm_interactive_pwd)
346 auth_flags |= AUTH_FLAG_LM_RESP;
347 if (nt_interactive_pwd)
348 auth_flags |= AUTH_FLAG_NTLM_RESP;
349
350 nt_status = make_user_info_map(user_info,
351 smb_name, client_domain,
352 wksta_name,
353 local_lm_blob,
354 local_nt_blob,
355 plaintext_blob,
356 auth_flags, True);
357
358 ret = NT_STATUS_IS_OK(nt_status) ? True : False;
359 data_blob_free(&local_lm_blob);
360 data_blob_free(&local_nt_blob);
361 return ret;
362 }
363 }
364
365
366 /****************************************************************************
367 Create an auth_usersupplied_data structure
368 ****************************************************************************/
369
370 BOOL make_user_info_for_reply(auth_usersupplied_info **user_info,
371 const char *smb_name,
372 const char *client_domain,
373 const uint8 chal[8],
374 DATA_BLOB plaintext_password)
375 {
376
377 DATA_BLOB local_lm_blob;
378 DATA_BLOB local_nt_blob;
379 NTSTATUS ret = NT_STATUS_UNSUCCESSFUL;
380 uint32 auth_flags = AUTH_FLAG_NONE;
381
382 /*
383 * Not encrypted - do so.
384 */
385
386 DEBUG(5,("make_user_info_for_reply: User passwords not in encrypted format.\n"));
387
388 if (plaintext_password.data) {
389 unsigned char local_lm_response[24];
390
391 #ifdef DEBUG_PASSWORD
392 DEBUG(10,("Unencrypted password (len %d):\n",plaintext_password.length));
393 dump_data(100, plaintext_password.data, plaintext_password.length);
394 #endif
395
396 SMBencrypt( (const char *)plaintext_password.data, (const uchar*)chal, local_lm_response);
397 local_lm_blob = data_blob(local_lm_response, 24);
398
399 /* We can't do an NT hash here, as the password needs to be
400 case insensitive */
401 local_nt_blob = data_blob(NULL, 0);
402
403 auth_flags = (AUTH_FLAG_PLAINTEXT | AUTH_FLAG_LM_RESP);
404 } else {
405 local_lm_blob = data_blob(NULL, 0);
406 local_nt_blob = data_blob(NULL, 0);
407 }
408
409 ret = make_user_info_map(user_info, smb_name,
410 client_domain,
411 get_remote_machine_name(),
412 local_lm_blob,
413 local_nt_blob,
414 plaintext_password,
415 auth_flags, False);
416
417 data_blob_free(&local_lm_blob);
418 return NT_STATUS_IS_OK(ret) ? True : False;
419 }
420
421 /****************************************************************************
422 Create an auth_usersupplied_data structure
423 ****************************************************************************/
424
425 NTSTATUS make_user_info_for_reply_enc(auth_usersupplied_info **user_info,
426 const char *smb_name,
427 const char *client_domain,
428 DATA_BLOB lm_resp, DATA_BLOB nt_resp)
429 {
430 uint32 auth_flags = AUTH_FLAG_NONE;
431
432 DATA_BLOB no_plaintext_blob = data_blob(NULL, 0);
433
434 if (lm_resp.length == 24) {
435 auth_flags |= AUTH_FLAG_LM_RESP;
436 }
437 if (nt_resp.length == 0) {
438 } else if (nt_resp.length == 24) {
439 auth_flags |= AUTH_FLAG_NTLM_RESP;
440 } else {
441 auth_flags |= AUTH_FLAG_NTLMv2_RESP;
442 }
443
444 return make_user_info_map(user_info, smb_name,
445 client_domain,
446 get_remote_machine_name(),
447 lm_resp,
448 nt_resp,
449 no_plaintext_blob,
450 auth_flags, True);
451 }
452
453 /****************************************************************************
454 Create a guest user_info blob, for anonymous authenticaion.
455 ****************************************************************************/
456
457 BOOL make_user_info_guest(auth_usersupplied_info **user_info)
458 {
459 DATA_BLOB lm_blob = data_blob(NULL, 0);
460 DATA_BLOB nt_blob = data_blob(NULL, 0);
461 DATA_BLOB plaintext_blob = data_blob(NULL, 0);
462 uint32 auth_flags = AUTH_FLAG_NONE;
463 NTSTATUS nt_status;
464
465 nt_status = make_user_info(user_info,
466 "","",
467 "","",
468 "",
469 nt_blob, lm_blob,
470 plaintext_blob,
471 auth_flags, 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 SAM_ACCOUNT *sampass,
761 uid_t uid, gid_t gid)
762 {
763 NTSTATUS nt_status;
764 const DOM_SID *user_sid = pdb_get_user_sid(sampass);
765 const DOM_SID *group_sid = pdb_get_group_sid(sampass);
766 int n_groupSIDs = 0;
767 DOM_SID *groupSIDs = NULL;
768 gid_t *unix_groups = NULL;
769 NT_USER_TOKEN *token;
770 BOOL is_guest;
771 uint32 rid;
772
773 nt_status = get_user_groups(pdb_get_username(sampass), uid, gid,
774 &n_groupSIDs, &groupSIDs, &unix_groups);
775
776 if (!NT_STATUS_IS_OK(nt_status)) {
777 DEBUG(4,("get_user_groups_from_local_sam failed\n"));
778 free_server_info(server_info);
779 return nt_status;
780 }
781
782 is_guest = (sid_peek_rid(user_sid, &rid) && rid == DOMAIN_USER_RID_GUEST);
783
784 if (!NT_STATUS_IS_OK(nt_status = create_nt_user_token(user_sid, group_sid,
785 n_groupSIDs, groupSIDs, is_guest,
786 &token)))
787 {
788 DEBUG(4,("create_nt_user_token failed\n"));
789 SAFE_FREE(groupSIDs);
790 SAFE_FREE(unix_groups);
791 free_server_info(server_info);
792 return nt_status;
793 }
794
795 SAFE_FREE(groupSIDs);
796
797 (*server_info)->n_groups = n_groupSIDs;
798 (*server_info)->groups = unix_groups;
799 (*server_info)->ptok = token;
800
801 return nt_status;
802 }
803
804 /***************************************************************************
805 Make (and fill) a user_info struct from a SAM_ACCOUNT
806 ***************************************************************************/
807
808 NTSTATUS make_server_info_sam(auth_serversupplied_info **server_info,
809 SAM_ACCOUNT *sampass)
810 {
811 NTSTATUS nt_status;
812 struct passwd *pwd;
813
814 if (!NT_STATUS_IS_OK(nt_status = make_server_info(server_info)))
815 return nt_status;
816
817 (*server_info)->sam_account = sampass;
818
819 if ( !(pwd = getpwnam_alloc(pdb_get_username(sampass))) ) {
820 DEBUG(1, ("User %s in passdb, but getpwnam() fails!\n",
821 pdb_get_username(sampass)));
822 free_server_info(server_info);
823 return NT_STATUS_NO_SUCH_USER;
824 }
825 (*server_info)->unix_name = smb_xstrdup(pwd->pw_name);
826 (*server_info)->gid = pwd->pw_gid;
827 (*server_info)->uid = pwd->pw_uid;
828
829 passwd_free(&pwd);
830
831 if (!NT_STATUS_IS_OK(nt_status = add_user_groups(server_info, sampass,
832 (*server_info)->uid,
833 (*server_info)->gid))) {
834 free_server_info(server_info);
835 return nt_status;
836 }
837
838 (*server_info)->sam_fill_level = SAM_FILL_ALL;
839 DEBUG(5,("make_server_info_sam: made server info for user %s -> %s\n",
840 pdb_get_username(sampass),
841 (*server_info)->unix_name));
842
843 return nt_status;
844 }
845
846 /***************************************************************************
847 Make (and fill) a user_info struct from a 'struct passwd' by conversion
848 to a SAM_ACCOUNT
849 ***************************************************************************/
850
851 NTSTATUS make_server_info_pw(auth_serversupplied_info **server_info, const struct passwd *pwd)
852 {
853 NTSTATUS nt_status;
854 SAM_ACCOUNT *sampass = NULL;
855 if (!NT_STATUS_IS_OK(nt_status = pdb_init_sam_pw(&sampass, pwd))) {
856 return nt_status;
857 }
858 if (!NT_STATUS_IS_OK(nt_status = make_server_info(server_info))) {
859 return nt_status;
860 }
861
862 (*server_info)->sam_account = sampass;
863
864 if (!NT_STATUS_IS_OK(nt_status = add_user_groups(server_info, sampass, pwd->pw_uid, pwd->pw_gid))) {
865 return nt_status;
866 }
867
868 (*server_info)->unix_name = smb_xstrdup(pwd->pw_name);
869
870 (*server_info)->sam_fill_level = SAM_FILL_ALL;
871 (*server_info)->uid = pwd->pw_uid;
872 (*server_info)->gid = pwd->pw_gid;
873 return nt_status;
874 }
875
876 /***************************************************************************
877 Make (and fill) a user_info struct for a guest login.
878 ***************************************************************************/
879
880 NTSTATUS make_server_info_guest(auth_serversupplied_info **server_info)
881 {
882 NTSTATUS nt_status;
883 SAM_ACCOUNT *sampass = NULL;
884 DOM_SID guest_sid;
885
886 if (!NT_STATUS_IS_OK(nt_status = pdb_init_sam(&sampass))) {
887 return nt_status;
888 }
889
890 sid_copy(&guest_sid, get_global_sam_sid());
891 sid_append_rid(&guest_sid, DOMAIN_USER_RID_GUEST);
892
893 become_root();
894 if (!pdb_getsampwsid(sampass, &guest_sid)) {
895 unbecome_root();
896 return NT_STATUS_NO_SUCH_USER;
897 }
898 unbecome_root();
899
900 nt_status = make_server_info_sam(server_info, sampass);
901
902 if (NT_STATUS_IS_OK(nt_status)) {
903 (*server_info)->guest = True;
904 }
905
906 return nt_status;
907 }
908
909 /***************************************************************************
910 Purely internal function for make_server_info_info3
911 Fill the sam account from getpwnam
912 ***************************************************************************/
913 static NTSTATUS fill_sam_account(TALLOC_CTX *mem_ctx,
914 const char *domain,
915 const char *username,
916 char **found_username,
917 uid_t *uid, gid_t *gid,
918 SAM_ACCOUNT **sam_account)
919 {
920 fstring dom_user;
921 struct passwd *passwd;
922
923 fstr_sprintf(dom_user, "%s%s%s",
924 domain, lp_winbind_separator(), username);
925
926 passwd = Get_Pwnam(dom_user);
927
928 /* if the lookup for DOMAIN\username failed, try again
929 with just 'username'. This is need for accessing the server
930 as a trust user that actually maps to a local account */
931
932 if ( !passwd ) {
933 fstrcpy( dom_user, username );
934 passwd = Get_Pwnam( dom_user );
935 }
936
937 if (passwd == NULL)
938 return NT_STATUS_NO_SUCH_USER;
939
940 *uid = passwd->pw_uid;
941 *gid = passwd->pw_gid;
942
943 /* This is pointless -- there is no suport for differeing
944 unix and windows names. Make sure to always store the
945 one we actually looked up and succeeded. Have I mentioned
946 why I hate the 'winbind use default domain' parameter?
947 --jerry */
948
949 *found_username = talloc_strdup(mem_ctx, dom_user);
950
951 return pdb_init_sam_pw(sam_account, passwd);
952 }
953
954 /****************************************************************************
955 Wrapper to allow the getpwnam() call to strip the domain name and
956 try again in case a local UNIX user is already there. Also run through
957 the username if we fallback to the username only.
958 ****************************************************************************/
959
960 struct passwd *smb_getpwnam( char *domuser )
961 {
962 struct passwd *pw;
963 char *p;
964 fstring mapped_username;
965
966 pw = Get_Pwnam( domuser );
967 if ( pw )
968 return pw;
969
970 /* fallback to looking up just the username */
971
972 p = strchr( domuser, *lp_winbind_separator() );
973
974 if ( p ) {
975 p += 1;
976 fstrcpy( mapped_username, p );
977 map_username( mapped_username );
978 return Get_Pwnam(mapped_username);
979 }
980
981 return NULL;
982 }
983
984 /***************************************************************************
985 Make a server_info struct from the info3 returned by a domain logon
986 ***************************************************************************/
987
988 NTSTATUS make_server_info_info3(TALLOC_CTX *mem_ctx,
989 const char *internal_username,
990 const char *sent_nt_username,
991 const char *domain,
992 auth_serversupplied_info **server_info,
993 NET_USER_INFO_3 *info3)
994 {
995 NTSTATUS nt_status = NT_STATUS_OK;
996 char *found_username;
997 const char *nt_domain;
998 const char *nt_username;
999
1000 SAM_ACCOUNT *sam_account = NULL;
1001 DOM_SID user_sid;
1002 DOM_SID group_sid;
1003
1004 uid_t uid;
1005 gid_t gid;
1006
1007 int n_lgroupSIDs;
1008 DOM_SID *lgroupSIDs = NULL;
1009
1010 gid_t *unix_groups = NULL;
1011 NT_USER_TOKEN *token;
1012
1013 DOM_SID *all_group_SIDs;
1014 size_t i;
1015
1016 /*
1017 Here is where we should check the list of
1018 trusted domains, and verify that the SID
1019 matches.
1020 */
1021
1022 sid_copy(&user_sid, &info3->dom_sid.sid);
1023 if (!sid_append_rid(&user_sid, info3->user_rid)) {
1024 return NT_STATUS_INVALID_PARAMETER;
1025 }
1026
1027 sid_copy(&group_sid, &info3->dom_sid.sid);
1028 if (!sid_append_rid(&group_sid, info3->group_rid)) {
1029 return NT_STATUS_INVALID_PARAMETER;
1030 }
1031
1032 if (!(nt_username = unistr2_tdup(mem_ctx, &(info3->uni_user_name)))) {
1033 /* If the server didn't give us one, just use the one we sent them */
1034 nt_username = sent_nt_username;
1035 }
1036
1037 if (!(nt_domain = unistr2_tdup(mem_ctx, &(info3->uni_logon_dom)))) {
1038 /* If the server didn't give us one, just use the one we sent them */
1039 domain = domain;
1040 }
1041
1042 /* try to fill the SAM account.. If getpwnam() fails, then try the
1043 add user script (2.2.x behavior) */
1044
1045 nt_status = fill_sam_account(mem_ctx, nt_domain, internal_username,
1046 &found_username, &uid, &gid, &sam_account);
1047
1048 if (NT_STATUS_EQUAL(nt_status, NT_STATUS_NO_SUCH_USER)) {
1049 DEBUG(3,("User %s does not exist, trying to add it\n",
1050 internal_username));
1051 auth_add_user_script(nt_domain, internal_username);
1052 nt_status = fill_sam_account(mem_ctx, nt_domain,
1053 internal_username, &found_username,
1054 &uid, &gid, &sam_account);
1055 }
1056
1057 if (!NT_STATUS_IS_OK(nt_status)) {
1058 DEBUG(0, ("make_server_info_info3: pdb_init_sam failed!\n"));
1059 return nt_status;
1060 }
1061
1062 if (!pdb_set_nt_username(sam_account, nt_username, PDB_CHANGED)) {
1063 pdb_free_sam(&sam_account);
1064 return NT_STATUS_NO_MEMORY;
1065 }
1066
1067 if (!pdb_set_username(sam_account, nt_username, PDB_CHANGED)) {
1068 pdb_free_sam(&sam_account);
1069 return NT_STATUS_NO_MEMORY;
1070 }
1071
1072 if (!pdb_set_domain(sam_account, nt_domain, PDB_CHANGED)) {
1073 pdb_free_sam(&sam_account);
1074 return NT_STATUS_NO_MEMORY;
1075 }
1076
1077 if (!pdb_set_user_sid(sam_account, &user_sid, PDB_CHANGED)) {
1078 pdb_free_sam(&sam_account);
1079 return NT_STATUS_UNSUCCESSFUL;
1080 }
1081
1082 if (!pdb_set_group_sid(sam_account, &group_sid, PDB_CHANGED)) {
1083 pdb_free_sam(&sam_account);
1084 return NT_STATUS_UNSUCCESSFUL;
1085 }
1086
1087 if (!pdb_set_fullname(sam_account, unistr2_static(&(info3->uni_full_name)),
1088 PDB_CHANGED)) {
1089 pdb_free_sam(&sam_account);
1090 return NT_STATUS_NO_MEMORY;
1091 }
1092
1093 if (!pdb_set_logon_script(sam_account, unistr2_static(&(info3->uni_logon_script)), PDB_CHANGED)) {
1094 pdb_free_sam(&sam_account);
1095 return NT_STATUS_NO_MEMORY;
1096 }
1097
1098 if (!pdb_set_profile_path(sam_account, unistr2_static(&(info3->uni_profile_path)), PDB_CHANGED)) {
1099 pdb_free_sam(&sam_account);
1100 return NT_STATUS_NO_MEMORY;
1101 }
1102
1103 if (!pdb_set_homedir(sam_account, unistr2_static(&(info3->uni_home_dir)), PDB_CHANGED)) {
1104 pdb_free_sam(&sam_account);
1105 return NT_STATUS_NO_MEMORY;
1106 }
1107
1108 if (!pdb_set_dir_drive(sam_account, unistr2_static(&(info3->uni_dir_drive)), PDB_CHANGED)) {
1109 pdb_free_sam(&sam_account);
1110 return NT_STATUS_NO_MEMORY;
1111 }
1112
1113 if (!NT_STATUS_IS_OK(nt_status = make_server_info(server_info))) {
1114 DEBUG(4, ("make_server_info failed!\n"));
1115 pdb_free_sam(&sam_account);
1116 return nt_status;
1117 }
1118
1119 /* save this here to _net_sam_logon() doesn't fail (it assumes a
1120 valid SAM_ACCOUNT) */
1121
1122 (*server_info)->sam_account = sam_account;
1123
1124 (*server_info)->unix_name = smb_xstrdup(found_username);
1125
1126 /* Fill in the unix info we found on the way */
1127
1128 (*server_info)->sam_fill_level = SAM_FILL_ALL;
1129 (*server_info)->uid = uid;
1130 (*server_info)->gid = gid;
1131
1132 /* Store the user group information in the server_info
1133 returned to the caller. */
1134
1135 nt_status = get_user_groups((*server_info)->unix_name,
1136 uid, gid, &n_lgroupSIDs, &lgroupSIDs, &unix_groups);
1137
1138 if ( !NT_STATUS_IS_OK(nt_status) ) {
1139 DEBUG(4,("get_user_groups failed\n"));
1140 return nt_status;
1141 }
1142
1143 (*server_info)->groups = unix_groups;
1144 (*server_info)->n_groups = n_lgroupSIDs;
1145
1146 /* Create a 'combined' list of all SIDs we might want in the SD */
1147
1148 all_group_SIDs = malloc(sizeof(DOM_SID) * (info3->num_groups2 +info3->num_other_sids));
1149
1150 if (!all_group_SIDs) {
1151 DEBUG(0, ("malloc() failed for DOM_SID list!\n"));
1152 SAFE_FREE(lgroupSIDs);
1153 free_server_info(server_info);
1154 return NT_STATUS_NO_MEMORY;
1155 }
1156
1157 #if 0 /* JERRY -- no such thing as local groups in current code */
1158 /* Copy the 'local' sids */
1159 memcpy(all_group_SIDs, lgroupSIDs, sizeof(DOM_SID) * n_lgroupSIDs);
1160 SAFE_FREE(lgroupSIDs);
1161 #endif
1162
1163 /* and create (by appending rids) the 'domain' sids */
1164
1165 for (i = 0; i < info3->num_groups2; i++) {
1166
1167 sid_copy(&all_group_SIDs[i], &(info3->dom_sid.sid));
1168
1169 if (!sid_append_rid(&all_group_SIDs[i], info3->gids[i].g_rid)) {
1170
1171 nt_status = NT_STATUS_INVALID_PARAMETER;
1172
1173 DEBUG(3,("could not append additional group rid 0x%x\n",
1174 info3->gids[i].g_rid));
1175
1176 SAFE_FREE(lgroupSIDs);
1177 free_server_info(server_info);
1178
1179 return nt_status;
1180
1181 }
1182 }
1183
1184 /* Copy 'other' sids. We need to do sid filtering here to
1185 prevent possible elevation of privileges. See:
1186
1187 http://www.microsoft.com/windows2000/techinfo/administration/security/sidfilter.asp
1188 */
1189
1190 for (i = 0; i < info3->num_other_sids; i++) {
1191 sid_copy(&all_group_SIDs[info3->num_groups2 + i],
1192 &info3->other_sids[i].sid);
1193 }
1194
1195 /* Where are the 'global' sids... */
1196
1197 /* can the user be guest? if yes, where is it stored? */
1198
1199 nt_status = create_nt_user_token(&user_sid, &group_sid,
1200 info3->num_groups2 + info3->num_other_sids,
1201 all_group_SIDs, False, &token);
1202
1203 if ( !NT_STATUS_IS_OK(nt_status) ) {
1204 DEBUG(4,("create_nt_user_token failed\n"));
1205 SAFE_FREE(all_group_SIDs);
1206 free_server_info(server_info);
1207 return nt_status;
1208 }
1209
1210 (*server_info)->ptok = token;
1211
1212 SAFE_FREE(all_group_SIDs);
1213
1214 memcpy((*server_info)->session_key, info3->user_sess_key, sizeof((*server_info)->session_key)/* 16 */);
1215 memcpy((*server_info)->first_8_lm_hash, info3->padding, 8);
1216
1217 return NT_STATUS_OK;
1218 }
1219
1220 /***************************************************************************
1221 Free a user_info struct
1222 ***************************************************************************/
1223
1224 void free_user_info(auth_usersupplied_info **user_info)
1225 {
1226 DEBUG(5,("attempting to free (and zero) a user_info structure\n"));
1227 if (*user_info != NULL) {
1228 if ((*user_info)->smb_name.str) {
1229 DEBUG(10,("structure was created for %s\n", (*user_info)->smb_name.str));
1230 }
1231 SAFE_FREE((*user_info)->smb_name.str);
1232 SAFE_FREE((*user_info)->internal_username.str);
1233 SAFE_FREE((*user_info)->client_domain.str);
1234 SAFE_FREE((*user_info)->domain.str);
1235 SAFE_FREE((*user_info)->wksta_name.str);
1236 data_blob_free(&(*user_info)->lm_resp);
1237 data_blob_free(&(*user_info)->nt_resp);
1238 SAFE_FREE((*user_info)->interactive_password);
1239 data_blob_clear_free(&(*user_info)->plaintext_password);
1240 ZERO_STRUCT(**user_info);
1241 }
1242 SAFE_FREE(*user_info);
1243 }
1244
1245 /***************************************************************************
1246 Clear out a server_info struct that has been allocated
1247 ***************************************************************************/
1248
1249 void free_server_info(auth_serversupplied_info **server_info)
1250 {
1251 DEBUG(5,("attempting to free (and zero) a server_info structure\n"));
1252 if (*server_info != NULL) {
1253 pdb_free_sam(&(*server_info)->sam_account);
1254
1255 /* call pam_end here, unless we know we are keeping it */
1256 delete_nt_token( &(*server_info)->ptok );
1257 SAFE_FREE((*server_info)->groups);
1258 SAFE_FREE((*server_info)->unix_name);
1259 ZERO_STRUCT(**server_info);
1260 }
1261 SAFE_FREE(*server_info);
1262 }
1263
1264 /***************************************************************************
1265 Make an auth_methods struct
1266 ***************************************************************************/
1267
1268 BOOL make_auth_methods(struct auth_context *auth_context, auth_methods **auth_method)
1269 {
1270 if (!auth_context) {
1271 smb_panic("no auth_context supplied to make_auth_methods()!\n");
1272 }
1273
1274 if (!auth_method) {
1275 smb_panic("make_auth_methods: pointer to auth_method pointer is NULL!\n");
1276 }
1277
1278 *auth_method = talloc(auth_context->mem_ctx, sizeof(**auth_method));
1279 if (!*auth_method) {
1280 DEBUG(0,("make_auth_method: malloc failed!\n"));
1281 return False;
1282 }
1283 ZERO_STRUCTP(*auth_method);
1284
1285 return True;
1286 }
1287
1288 /****************************************************************************
1289 Delete a SID token.
1290 ****************************************************************************/
1291
1292 void delete_nt_token(NT_USER_TOKEN **pptoken)
1293 {
1294 if (*pptoken) {
1295 NT_USER_TOKEN *ptoken = *pptoken;
1296 SAFE_FREE( ptoken->user_sids );
1297 ZERO_STRUCTP(ptoken);
1298 }
1299 SAFE_FREE(*pptoken);
1300 }
1301
1302 /****************************************************************************
1303 Duplicate a SID token.
1304 ****************************************************************************/
1305
1306 NT_USER_TOKEN *dup_nt_token(NT_USER_TOKEN *ptoken)
1307 {
1308 NT_USER_TOKEN *token;
1309
1310 if (!ptoken)
1311 return NULL;
1312
1313 if ((token = (NT_USER_TOKEN *)malloc( sizeof(NT_USER_TOKEN) ) ) == NULL)
1314 return NULL;
1315
1316 ZERO_STRUCTP(token);
1317
1318 if ((token->user_sids = (DOM_SID *)memdup( ptoken->user_sids, sizeof(DOM_SID) * ptoken->num_sids )) == NULL) {
1319 SAFE_FREE(token);
1320 return NULL;
1321 }
1322
1323 token->num_sids = ptoken->num_sids;
1324
1325 return token;
1326 }
1327
1328 /**
1329 * Squash an NT_STATUS in line with security requirements.
1330 * In an attempt to avoid giving the whole game away when users
1331 * are authenticating, NT replaces both NT_STATUS_NO_SUCH_USER and
1332 * NT_STATUS_WRONG_PASSWORD with NT_STATUS_LOGON_FAILURE in certain situations
1333 * (session setups in particular).
1334 *
1335 * @param nt_status NTSTATUS input for squashing.
1336 * @return the 'squashed' nt_status
1337 **/
1338
1339 NTSTATUS nt_status_squash(NTSTATUS nt_status)
1340 {
1341 if NT_STATUS_IS_OK(nt_status) {
1342 return nt_status;
1343 } else if NT_STATUS_EQUAL(nt_status, NT_STATUS_NO_SUCH_USER) {
1344 /* Match WinXP and don't give the game away */
1345 return NT_STATUS_LOGON_FAILURE;
1346
1347 } else if NT_STATUS_EQUAL(nt_status, NT_STATUS_WRONG_PASSWORD) {
1348 /* Match WinXP and don't give the game away */
1349 return NT_STATUS_LOGON_FAILURE;
1350 } else {
1351 return nt_status;
1352 }
1353 }
1354
1355
1356 /**
1357 * Verify whether or not given domain is trusted.
1358 *
1359 * @param domain_name name of the domain to be verified
1360 * @return true if domain is one of the trusted once or
1361 * false if otherwise
1362 **/
1363
1364 BOOL is_trusted_domain(const char* dom_name)
1365 {
1366 DOM_SID trustdom_sid;
1367 char *pass = NULL;
1368 time_t lct;
1369 BOOL ret;
1370
1371 /* no trusted domains for a standalone server */
1372
1373 if ( lp_server_role() == ROLE_STANDALONE )
1374 return False;
1375
1376 /* if we are a DC, then check for a direct trust relationships */
1377
1378 if (lp_server_role() == ROLE_DOMAIN_BDC || lp_server_role() == ROLE_DOMAIN_PDC) {
1379 become_root();
1380 ret = secrets_fetch_trusted_domain_password(dom_name, &pass, &trustdom_sid, &lct);
1381 unbecome_root();
1382 SAFE_FREE(pass);
1383 if (ret)
1384 return True;
1385 }
1386 else {
1387 /* if winbindd is not up and we are a domain member) then we need to update the
1388 trustdom_cache ourselves */
1389
1390 if ( !winbind_ping() )
1391 update_trustdom_cache();
1392 }
1393
1394 /* now the trustdom cache should be available a DC could still
1395 * have a transitive trust so fall back to the cache of trusted
1396 * domains (like a domain member would use */
1397
1398 if ( trustdom_cache_fetch(dom_name, &trustdom_sid) ) {
1399 return True;
1400 }
1401
1402 return False;
1403 }
1404
reg import