s3-libads: use ldap_init_fd() to initialize a ldap session if possible
[bbaumbach/samba-autobuild/.git] / source3 / passdb / pdb_get_set.c
1 /* 
2    Unix SMB/CIFS implementation.
3    struct samu access routines
4    Copyright (C) Jeremy Allison                 1996-2001
5    Copyright (C) Luke Kenneth Casson Leighton   1996-1998
6    Copyright (C) Gerald (Jerry) Carter          2000-2006
7    Copyright (C) Andrew Bartlett                2001-2002
8    Copyright (C) Stefan (metze) Metzmacher      2002
9
10    This program is free software; you can redistribute it and/or modify
11    it under the terms of the GNU General Public License as published by
12    the Free Software Foundation; either version 3 of the License, or
13    (at your option) any later version.
14
15    This program is distributed in the hope that it will be useful,
16    but WITHOUT ANY WARRANTY; without even the implied warranty of
17    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
18    GNU General Public License for more details.
19
20    You should have received a copy of the GNU General Public License
21    along with this program.  If not, see <http://www.gnu.org/licenses/>.
22 */
23
24 #include "includes.h"
25 #include "passdb.h"
26 #include "../libcli/auth/libcli_auth.h"
27 #include "../libcli/security/security.h"
28 #include "../lib/util/bitmap.h"
29
30 #undef DBGC_CLASS
31 #define DBGC_CLASS DBGC_PASSDB
32
33 /**
34  * @todo Redefine this to NULL, but this changes the API because
35  *       much of samba assumes that the pdb_get...() funtions 
36  *       return strings.  (ie not null-pointers).
37  *       See also pdb_fill_default_sam().
38  */
39
40 #define PDB_NOT_QUITE_NULL ""
41
42 /*********************************************************************
43  Test if a change time is a max value. Copes with old and new values
44  of max.
45  ********************************************************************/
46
47 bool pdb_is_password_change_time_max(time_t test_time)
48 {
49         if (test_time == get_time_t_max()) {
50                 return true;
51         }
52 #if (defined(SIZEOF_TIME_T) && (SIZEOF_TIME_T == 8))
53         if (test_time == 0x7FFFFFFFFFFFFFFFLL) {
54                 return true;
55         }
56 #endif
57         if (test_time == 0x7FFFFFFF) {
58                 return true;
59         }
60         return false;
61 }
62
63 /*********************************************************************
64  Return an unchanging version of max password change time - 0x7FFFFFFF.
65  ********************************************************************/
66
67 static time_t pdb_password_change_time_max(void)
68 {
69         return 0x7FFFFFFF;
70 }
71
72 /*********************************************************************
73  Collection of get...() functions for struct samu.
74  ********************************************************************/
75
76 uint32_t pdb_get_acct_ctrl(const struct samu *sampass)
77 {
78         return sampass->acct_ctrl;
79 }
80
81 time_t pdb_get_logon_time(const struct samu *sampass)
82 {
83         return sampass->logon_time;
84 }
85
86 time_t pdb_get_logoff_time(const struct samu *sampass)
87 {
88         return sampass->logoff_time;
89 }
90
91 time_t pdb_get_kickoff_time(const struct samu *sampass)
92 {
93         return sampass->kickoff_time;
94 }
95
96 time_t pdb_get_bad_password_time(const struct samu *sampass)
97 {
98         return sampass->bad_password_time;
99 }
100
101 time_t pdb_get_pass_last_set_time(const struct samu *sampass)
102 {
103         return sampass->pass_last_set_time;
104 }
105
106 time_t pdb_get_pass_can_change_time(const struct samu *sampass)
107 {
108         uint32_t allow;
109
110         /* if the last set time is zero, it means the user cannot 
111            change their password, and this time must be zero.   jmcd 
112         */
113         if (sampass->pass_last_set_time == 0)
114                 return (time_t) 0;
115
116         /* if the time is max, and the field has been changed,
117            we're trying to update this real value from the sampass
118            to indicate that the user cannot change their password.  jmcd
119         */
120         if (pdb_is_password_change_time_max(sampass->pass_can_change_time) &&
121             IS_SAM_CHANGED(sampass, PDB_CANCHANGETIME))
122                 return sampass->pass_can_change_time;
123
124         if (!pdb_get_account_policy(PDB_POLICY_MIN_PASSWORD_AGE, &allow))
125                 allow = 0;
126
127         /* in normal cases, just calculate it from policy */
128         return sampass->pass_last_set_time + allow;
129 }
130
131 /* we need this for loading from the backend, so that we don't overwrite
132    non-changed max times, otherwise the pass_can_change checking won't work */
133 time_t pdb_get_pass_can_change_time_noncalc(const struct samu *sampass)
134 {
135         return sampass->pass_can_change_time;
136 }
137
138 time_t pdb_get_pass_must_change_time(const struct samu *sampass)
139 {
140         uint32_t expire;
141
142         if (sampass->pass_last_set_time == 0)
143                 return (time_t) 0;
144
145         if (sampass->acct_ctrl & ACB_PWNOEXP)
146                 return pdb_password_change_time_max();
147
148         if (!pdb_get_account_policy(PDB_POLICY_MAX_PASSWORD_AGE, &expire)
149             || expire == (uint32_t)-1 || expire == 0)
150                 return get_time_t_max();
151
152         return sampass->pass_last_set_time + expire;
153 }
154
155 bool pdb_get_pass_can_change(const struct samu *sampass)
156 {
157         if (pdb_is_password_change_time_max(sampass->pass_can_change_time))
158                 return False;
159         return True;
160 }
161
162 uint16_t pdb_get_logon_divs(const struct samu *sampass)
163 {
164         return sampass->logon_divs;
165 }
166
167 uint32_t pdb_get_hours_len(const struct samu *sampass)
168 {
169         return sampass->hours_len;
170 }
171
172 const uint8_t *pdb_get_hours(const struct samu *sampass)
173 {
174         return (sampass->hours);
175 }
176
177 const uint8_t *pdb_get_nt_passwd(const struct samu *sampass)
178 {
179         SMB_ASSERT((!sampass->nt_pw.data) 
180                    || sampass->nt_pw.length == NT_HASH_LEN);
181         return (uint8_t *)sampass->nt_pw.data;
182 }
183
184 const uint8_t *pdb_get_lanman_passwd(const struct samu *sampass)
185 {
186         SMB_ASSERT((!sampass->lm_pw.data) 
187                    || sampass->lm_pw.length == LM_HASH_LEN);
188         return (uint8_t *)sampass->lm_pw.data;
189 }
190
191 const uint8_t *pdb_get_pw_history(const struct samu *sampass, uint32_t *current_hist_len)
192 {
193         SMB_ASSERT((!sampass->nt_pw_his.data) 
194            || ((sampass->nt_pw_his.length % PW_HISTORY_ENTRY_LEN) == 0));
195         *current_hist_len = sampass->nt_pw_his.length / PW_HISTORY_ENTRY_LEN;
196         return (uint8_t *)sampass->nt_pw_his.data;
197 }
198
199 /* Return the plaintext password if known.  Most of the time
200    it isn't, so don't assume anything magic about this function.
201
202    Used to pass the plaintext to passdb backends that might 
203    want to store more than just the NTLM hashes.
204 */
205 const char *pdb_get_plaintext_passwd(const struct samu *sampass)
206 {
207         return sampass->plaintext_pw;
208 }
209
210 const struct dom_sid *pdb_get_user_sid(const struct samu *sampass)
211 {
212         return &sampass->user_sid;
213 }
214
215 const struct dom_sid *pdb_get_group_sid(struct samu *sampass)
216 {
217         NTSTATUS status;
218
219         /* Return the cached group SID if we have that */
220         if (sampass->group_sid) {
221                 return sampass->group_sid;
222         }
223
224         /* No algorithmic mapping, meaning that we have to figure out the
225            primary group SID according to group mapping and the user SID must
226            be a newly allocated one.  We rely on the user's Unix primary gid.
227            We have no choice but to fail if we can't find it. */
228         status = get_primary_group_sid(sampass,
229                                         pdb_get_username(sampass),
230                                         &sampass->unix_pw,
231                                         &sampass->group_sid);
232         if (!NT_STATUS_IS_OK(status)) {
233                 return NULL;
234         }
235
236         return sampass->group_sid;
237 }
238
239 /**
240  * Get flags showing what is initialised in the struct samu
241  * @param sampass the struct samu in question
242  * @return the flags indicating the members initialised in the struct.
243  **/
244
245 enum pdb_value_state pdb_get_init_flags(const struct samu *sampass, enum pdb_elements element)
246 {
247         enum pdb_value_state ret = PDB_DEFAULT;
248
249         if (!sampass->change_flags || !sampass->set_flags)
250                 return ret;
251
252         if (bitmap_query(sampass->set_flags, element)) {
253                 DEBUG(11, ("element %d: SET\n", element)); 
254                 ret = PDB_SET;
255         }
256
257         if (bitmap_query(sampass->change_flags, element)) {
258                 DEBUG(11, ("element %d: CHANGED\n", element)); 
259                 ret = PDB_CHANGED;
260         }
261
262         if (ret == PDB_DEFAULT) {
263                 DEBUG(11, ("element %d: DEFAULT\n", element)); 
264         }
265
266         return ret;
267 }
268
269 const char *pdb_get_username(const struct samu *sampass)
270 {
271         return sampass->username;
272 }
273
274 const char *pdb_get_domain(const struct samu *sampass)
275 {
276         return sampass->domain;
277 }
278
279 const char *pdb_get_nt_username(const struct samu *sampass)
280 {
281         return sampass->nt_username;
282 }
283
284 const char *pdb_get_fullname(const struct samu *sampass)
285 {
286         return sampass->full_name;
287 }
288
289 const char *pdb_get_homedir(const struct samu *sampass)
290 {
291         return sampass->home_dir;
292 }
293
294 const char *pdb_get_dir_drive(const struct samu *sampass)
295 {
296         return sampass->dir_drive;
297 }
298
299 const char *pdb_get_logon_script(const struct samu *sampass)
300 {
301         return sampass->logon_script;
302 }
303
304 const char *pdb_get_profile_path(const struct samu *sampass)
305 {
306         return sampass->profile_path;
307 }
308
309 const char *pdb_get_acct_desc(const struct samu *sampass)
310 {
311         return sampass->acct_desc;
312 }
313
314 const char *pdb_get_workstations(const struct samu *sampass)
315 {
316         return sampass->workstations;
317 }
318
319 const char *pdb_get_comment(const struct samu *sampass)
320 {
321         return sampass->comment;
322 }
323
324 const char *pdb_get_munged_dial(const struct samu *sampass)
325 {
326         return sampass->munged_dial;
327 }
328
329 uint16_t pdb_get_bad_password_count(const struct samu *sampass)
330 {
331         return sampass->bad_password_count;
332 }
333
334 uint16_t pdb_get_logon_count(const struct samu *sampass)
335 {
336         return sampass->logon_count;
337 }
338
339 uint16_t pdb_get_country_code(const struct samu *sampass)
340 {
341         return sampass->country_code;
342 }
343
344 uint16_t pdb_get_code_page(const struct samu *sampass)
345 {
346         return sampass->code_page;
347 }
348
349 uint32_t pdb_get_unknown_6(const struct samu *sampass)
350 {
351         return sampass->unknown_6;
352 }
353
354 void *pdb_get_backend_private_data(const struct samu *sampass, const struct pdb_methods *my_methods)
355 {
356         if (my_methods == sampass->backend_private_methods) {
357                 return sampass->backend_private_data;
358         } else {
359                 return NULL;
360         }
361 }
362
363 /*********************************************************************
364  Collection of set...() functions for struct samu.
365  ********************************************************************/
366
367 bool pdb_set_acct_ctrl(struct samu *sampass, uint32_t acct_ctrl, enum pdb_value_state flag)
368 {
369         sampass->acct_ctrl = acct_ctrl;
370         return pdb_set_init_flags(sampass, PDB_ACCTCTRL, flag);
371 }
372
373 bool pdb_set_logon_time(struct samu *sampass, time_t mytime, enum pdb_value_state flag)
374 {
375         sampass->logon_time = mytime;
376         return pdb_set_init_flags(sampass, PDB_LOGONTIME, flag);
377 }
378
379 bool pdb_set_logoff_time(struct samu *sampass, time_t mytime, enum pdb_value_state flag)
380 {
381         sampass->logoff_time = mytime;
382         return pdb_set_init_flags(sampass, PDB_LOGOFFTIME, flag);
383 }
384
385 bool pdb_set_kickoff_time(struct samu *sampass, time_t mytime, enum pdb_value_state flag)
386 {
387         sampass->kickoff_time = mytime;
388         return pdb_set_init_flags(sampass, PDB_KICKOFFTIME, flag);
389 }
390
391 bool pdb_set_bad_password_time(struct samu *sampass, time_t mytime, enum pdb_value_state flag)
392 {
393         sampass->bad_password_time = mytime;
394         return pdb_set_init_flags(sampass, PDB_BAD_PASSWORD_TIME, flag);
395 }
396
397 bool pdb_set_pass_can_change_time(struct samu *sampass, time_t mytime, enum pdb_value_state flag)
398 {
399         sampass->pass_can_change_time = mytime;
400         return pdb_set_init_flags(sampass, PDB_CANCHANGETIME, flag);
401 }
402
403 bool pdb_set_pass_last_set_time(struct samu *sampass, time_t mytime, enum pdb_value_state flag)
404 {
405         sampass->pass_last_set_time = mytime;
406         return pdb_set_init_flags(sampass, PDB_PASSLASTSET, flag);
407 }
408
409 bool pdb_set_hours_len(struct samu *sampass, uint32_t len, enum pdb_value_state flag)
410 {
411         sampass->hours_len = len;
412         return pdb_set_init_flags(sampass, PDB_HOURSLEN, flag);
413 }
414
415 bool pdb_set_logon_divs(struct samu *sampass, uint16_t hours, enum pdb_value_state flag)
416 {
417         sampass->logon_divs = hours;
418         return pdb_set_init_flags(sampass, PDB_LOGONDIVS, flag);
419 }
420
421 /**
422  * Set flags showing what is initialised in the struct samu
423  * @param sampass the struct samu in question
424  * @param flag The *new* flag to be set.  Old flags preserved
425  *             this flag is only added.  
426  **/
427
428 bool pdb_set_init_flags(struct samu *sampass, enum pdb_elements element, enum pdb_value_state value_flag)
429 {
430         if (!sampass->set_flags) {
431                 if ((sampass->set_flags = 
432                         bitmap_talloc(sampass, 
433                                         PDB_COUNT))==NULL) {
434                         DEBUG(0,("bitmap_talloc failed\n"));
435                         return False;
436                 }
437         }
438         if (!sampass->change_flags) {
439                 if ((sampass->change_flags = 
440                         bitmap_talloc(sampass, 
441                                         PDB_COUNT))==NULL) {
442                         DEBUG(0,("bitmap_talloc failed\n"));
443                         return False;
444                 }
445         }
446
447         switch(value_flag) {
448                 case PDB_CHANGED:
449                         if (!bitmap_set(sampass->change_flags, element)) {
450                                 DEBUG(0,("Can't set flag: %d in change_flags.\n",element));
451                                 return False;
452                         }
453                         if (!bitmap_set(sampass->set_flags, element)) {
454                                 DEBUG(0,("Can't set flag: %d in set_flags.\n",element));
455                                 return False;
456                         }
457                         DEBUG(11, ("element %d -> now CHANGED\n", element)); 
458                         break;
459                 case PDB_SET:
460                         if (!bitmap_clear(sampass->change_flags, element)) {
461                                 DEBUG(0,("Can't set flag: %d in change_flags.\n",element));
462                                 return False;
463                         }
464                         if (!bitmap_set(sampass->set_flags, element)) {
465                                 DEBUG(0,("Can't set flag: %d in set_flags.\n",element));
466                                 return False;
467                         }
468                         DEBUG(11, ("element %d -> now SET\n", element)); 
469                         break;
470                 case PDB_DEFAULT:
471                 default:
472                         if (!bitmap_clear(sampass->change_flags, element)) {
473                                 DEBUG(0,("Can't set flag: %d in change_flags.\n",element));
474                                 return False;
475                         }
476                         if (!bitmap_clear(sampass->set_flags, element)) {
477                                 DEBUG(0,("Can't set flag: %d in set_flags.\n",element));
478                                 return False;
479                         }
480                         DEBUG(11, ("element %d -> now DEFAULT\n", element)); 
481                         break;
482         }
483
484         return True;
485 }
486
487 bool pdb_set_user_sid(struct samu *sampass, const struct dom_sid *u_sid, enum pdb_value_state flag)
488 {
489         struct dom_sid_buf buf;
490
491         if (!u_sid)
492                 return False;
493
494         sid_copy(&sampass->user_sid, u_sid);
495
496         DEBUG(10, ("pdb_set_user_sid: setting user sid %s\n", 
497                    dom_sid_str_buf(&sampass->user_sid, &buf)));
498
499         return pdb_set_init_flags(sampass, PDB_USERSID, flag);
500 }
501
502 bool pdb_set_user_sid_from_string(struct samu *sampass, const char *u_sid, enum pdb_value_state flag)
503 {
504         struct dom_sid new_sid;
505
506         if (!u_sid)
507                 return False;
508
509         DEBUG(10, ("pdb_set_user_sid_from_string: setting user sid %s\n",
510                    u_sid));
511
512         if (!string_to_sid(&new_sid, u_sid)) { 
513                 DEBUG(1, ("pdb_set_user_sid_from_string: %s isn't a valid SID!\n", u_sid));
514                 return False;
515         }
516
517         if (!pdb_set_user_sid(sampass, &new_sid, flag)) {
518                 DEBUG(1, ("pdb_set_user_sid_from_string: could not set sid %s on struct samu!\n", u_sid));
519                 return False;
520         }
521
522         return True;
523 }
524
525 /********************************************************************
526  We never fill this in from a passdb backend but rather set is 
527  based on the user's primary group membership.  However, the 
528  struct samu* is overloaded and reused in domain memship code 
529  as well and built from the netr_SamInfo3 or PAC so we
530  have to allow the explicitly setting of a group SID here.
531 ********************************************************************/
532
533 bool pdb_set_group_sid(struct samu *sampass, const struct dom_sid *g_sid, enum pdb_value_state flag)
534 {
535         gid_t gid;
536         struct dom_sid dug_sid;
537         struct dom_sid_buf buf;
538
539         if (!g_sid)
540                 return False;
541
542         if ( !(sampass->group_sid = talloc( sampass, struct dom_sid )) ) {
543                 return False;
544         }
545
546         /* if we cannot resolve the SID to gid, then just ignore it and 
547            store DOMAIN_USERS as the primary groupSID */
548
549         sid_compose(&dug_sid, get_global_sam_sid(), DOMAIN_RID_USERS);
550
551         if (dom_sid_equal(&dug_sid, g_sid)) {
552                 sid_copy(sampass->group_sid, &dug_sid);
553         } else if (sid_to_gid( g_sid, &gid ) ) {
554                 sid_copy(sampass->group_sid, g_sid);
555         } else {
556                 sid_copy(sampass->group_sid, &dug_sid);
557         }
558
559         DEBUG(10, ("pdb_set_group_sid: setting group sid %s\n", 
560                    dom_sid_str_buf(sampass->group_sid, &buf)));
561
562         return pdb_set_init_flags(sampass, PDB_GROUPSID, flag);
563 }
564
565 /*********************************************************************
566  Set the user's UNIX name.
567  ********************************************************************/
568
569 bool pdb_set_username(struct samu *sampass, const char *username, enum pdb_value_state flag)
570 {
571         if (username) { 
572                 DEBUG(10, ("pdb_set_username: setting username %s, was %s\n", username,
573                         (sampass->username)?(sampass->username):"NULL"));
574
575                 sampass->username = talloc_strdup(sampass, username);
576
577                 if (!sampass->username) {
578                         DEBUG(0, ("pdb_set_username: talloc_strdup() failed!\n"));
579                         return False;
580                 }
581         } else {
582                 sampass->username = PDB_NOT_QUITE_NULL;
583         }
584
585         return pdb_set_init_flags(sampass, PDB_USERNAME, flag);
586 }
587
588 /*********************************************************************
589  Set the domain name.
590  ********************************************************************/
591
592 bool pdb_set_domain(struct samu *sampass, const char *domain, enum pdb_value_state flag)
593 {
594         if (domain) { 
595                 DEBUG(10, ("pdb_set_domain: setting domain %s, was %s\n", domain,
596                         (sampass->domain)?(sampass->domain):"NULL"));
597
598                 sampass->domain = talloc_strdup(sampass, domain);
599
600                 if (!sampass->domain) {
601                         DEBUG(0, ("pdb_set_domain: talloc_strdup() failed!\n"));
602                         return False;
603                 }
604         } else {
605                 sampass->domain = PDB_NOT_QUITE_NULL;
606         }
607
608         return pdb_set_init_flags(sampass, PDB_DOMAIN, flag);
609 }
610
611 /*********************************************************************
612  Set the user's NT name.
613  ********************************************************************/
614
615 bool pdb_set_nt_username(struct samu *sampass, const char *nt_username, enum pdb_value_state flag)
616 {
617         if (nt_username) { 
618                 DEBUG(10, ("pdb_set_nt_username: setting nt username %s, was %s\n", nt_username,
619                         (sampass->nt_username)?(sampass->nt_username):"NULL"));
620  
621                 sampass->nt_username = talloc_strdup(sampass, nt_username);
622
623                 if (!sampass->nt_username) {
624                         DEBUG(0, ("pdb_set_nt_username: talloc_strdup() failed!\n"));
625                         return False;
626                 }
627         } else {
628                 sampass->nt_username = PDB_NOT_QUITE_NULL;
629         }
630
631         return pdb_set_init_flags(sampass, PDB_NTUSERNAME, flag);
632 }
633
634 /*********************************************************************
635  Set the user's full name.
636  ********************************************************************/
637
638 bool pdb_set_fullname(struct samu *sampass, const char *full_name, enum pdb_value_state flag)
639 {
640         if (full_name) { 
641                 DEBUG(10, ("pdb_set_full_name: setting full name %s, was %s\n", full_name,
642                         (sampass->full_name)?(sampass->full_name):"NULL"));
643
644                 sampass->full_name = talloc_strdup(sampass, full_name);
645
646                 if (!sampass->full_name) {
647                         DEBUG(0, ("pdb_set_fullname: talloc_strdup() failed!\n"));
648                         return False;
649                 }
650         } else {
651                 sampass->full_name = PDB_NOT_QUITE_NULL;
652         }
653
654         return pdb_set_init_flags(sampass, PDB_FULLNAME, flag);
655 }
656
657 /*********************************************************************
658  Set the user's logon script.
659  ********************************************************************/
660
661 bool pdb_set_logon_script(struct samu *sampass, const char *logon_script, enum pdb_value_state flag)
662 {
663         if (logon_script) { 
664                 DEBUG(10, ("pdb_set_logon_script: setting logon script %s, was %s\n", logon_script,
665                         (sampass->logon_script)?(sampass->logon_script):"NULL"));
666
667                 sampass->logon_script = talloc_strdup(sampass, logon_script);
668
669                 if (!sampass->logon_script) {
670                         DEBUG(0, ("pdb_set_logon_script: talloc_strdup() failed!\n"));
671                         return False;
672                 }
673         } else {
674                 sampass->logon_script = PDB_NOT_QUITE_NULL;
675         }
676
677         return pdb_set_init_flags(sampass, PDB_LOGONSCRIPT, flag);
678 }
679
680 /*********************************************************************
681  Set the user's profile path.
682  ********************************************************************/
683
684 bool pdb_set_profile_path(struct samu *sampass, const char *profile_path, enum pdb_value_state flag)
685 {
686         if (profile_path) { 
687                 DEBUG(10, ("pdb_set_profile_path: setting profile path %s, was %s\n", profile_path,
688                         (sampass->profile_path)?(sampass->profile_path):"NULL"));
689
690                 sampass->profile_path = talloc_strdup(sampass, profile_path);
691
692                 if (!sampass->profile_path) {
693                         DEBUG(0, ("pdb_set_profile_path: talloc_strdup() failed!\n"));
694                         return False;
695                 }
696         } else {
697                 sampass->profile_path = PDB_NOT_QUITE_NULL;
698         }
699
700         return pdb_set_init_flags(sampass, PDB_PROFILE, flag);
701 }
702
703 /*********************************************************************
704  Set the user's directory drive.
705  ********************************************************************/
706
707 bool pdb_set_dir_drive(struct samu *sampass, const char *dir_drive, enum pdb_value_state flag)
708 {
709         if (dir_drive) { 
710                 DEBUG(10, ("pdb_set_dir_drive: setting dir drive %s, was %s\n", dir_drive,
711                         (sampass->dir_drive)?(sampass->dir_drive):"NULL"));
712
713                 sampass->dir_drive = talloc_strdup(sampass, dir_drive);
714
715                 if (!sampass->dir_drive) {
716                         DEBUG(0, ("pdb_set_dir_drive: talloc_strdup() failed!\n"));
717                         return False;
718                 }
719
720         } else {
721                 sampass->dir_drive = PDB_NOT_QUITE_NULL;
722         }
723
724         return pdb_set_init_flags(sampass, PDB_DRIVE, flag);
725 }
726
727 /*********************************************************************
728  Set the user's home directory.
729  ********************************************************************/
730
731 bool pdb_set_homedir(struct samu *sampass, const char *home_dir, enum pdb_value_state flag)
732 {
733         if (home_dir) { 
734                 DEBUG(10, ("pdb_set_homedir: setting home dir %s, was %s\n", home_dir,
735                         (sampass->home_dir)?(sampass->home_dir):"NULL"));
736
737                 sampass->home_dir = talloc_strdup(sampass, home_dir);
738
739                 if (!sampass->home_dir) {
740                         DEBUG(0, ("pdb_set_home_dir: talloc_strdup() failed!\n"));
741                         return False;
742                 }
743         } else {
744                 sampass->home_dir = PDB_NOT_QUITE_NULL;
745         }
746
747         return pdb_set_init_flags(sampass, PDB_SMBHOME, flag);
748 }
749
750 /*********************************************************************
751  Set the user's account description.
752  ********************************************************************/
753
754 bool pdb_set_acct_desc(struct samu *sampass, const char *acct_desc, enum pdb_value_state flag)
755 {
756         if (acct_desc) { 
757                 sampass->acct_desc = talloc_strdup(sampass, acct_desc);
758
759                 if (!sampass->acct_desc) {
760                         DEBUG(0, ("pdb_set_acct_desc: talloc_strdup() failed!\n"));
761                         return False;
762                 }
763         } else {
764                 sampass->acct_desc = PDB_NOT_QUITE_NULL;
765         }
766
767         return pdb_set_init_flags(sampass, PDB_ACCTDESC, flag);
768 }
769
770 /*********************************************************************
771  Set the user's workstation allowed list.
772  ********************************************************************/
773
774 bool pdb_set_workstations(struct samu *sampass, const char *workstations, enum pdb_value_state flag)
775 {
776         if (workstations) { 
777                 DEBUG(10, ("pdb_set_workstations: setting workstations %s, was %s\n", workstations,
778                         (sampass->workstations)?(sampass->workstations):"NULL"));
779
780                 sampass->workstations = talloc_strdup(sampass, workstations);
781
782                 if (!sampass->workstations) {
783                         DEBUG(0, ("pdb_set_workstations: talloc_strdup() failed!\n"));
784                         return False;
785                 }
786         } else {
787                 sampass->workstations = PDB_NOT_QUITE_NULL;
788         }
789
790         return pdb_set_init_flags(sampass, PDB_WORKSTATIONS, flag);
791 }
792
793 /*********************************************************************
794  ********************************************************************/
795
796 bool pdb_set_comment(struct samu *sampass, const char *comment, enum pdb_value_state flag)
797 {
798         if (comment) { 
799                 sampass->comment = talloc_strdup(sampass, comment);
800
801                 if (!sampass->comment) {
802                         DEBUG(0, ("pdb_set_comment: talloc_strdup() failed!\n"));
803                         return False;
804                 }
805         } else {
806                 sampass->comment = PDB_NOT_QUITE_NULL;
807         }
808
809         return pdb_set_init_flags(sampass, PDB_COMMENT, flag);
810 }
811
812 /*********************************************************************
813  Set the user's dial string.
814  ********************************************************************/
815
816 bool pdb_set_munged_dial(struct samu *sampass, const char *munged_dial, enum pdb_value_state flag)
817 {
818         if (munged_dial) { 
819                 sampass->munged_dial = talloc_strdup(sampass, munged_dial);
820
821                 if (!sampass->munged_dial) {
822                         DEBUG(0, ("pdb_set_munged_dial: talloc_strdup() failed!\n"));
823                         return False;
824                 }
825         } else {
826                 sampass->munged_dial = PDB_NOT_QUITE_NULL;
827         }
828
829         return pdb_set_init_flags(sampass, PDB_MUNGEDDIAL, flag);
830 }
831
832 /*********************************************************************
833  Set the user's NT hash.
834  ********************************************************************/
835
836 bool pdb_set_nt_passwd(struct samu *sampass, const uint8_t pwd[NT_HASH_LEN], enum pdb_value_state flag)
837 {
838         data_blob_clear_free(&sampass->nt_pw);
839
840        if (pwd) {
841                sampass->nt_pw =
842                        data_blob_talloc(sampass, pwd, NT_HASH_LEN);
843        } else {
844                sampass->nt_pw = data_blob_null;
845        }
846
847         return pdb_set_init_flags(sampass, PDB_NTPASSWD, flag);
848 }
849
850 /*********************************************************************
851  Set the user's LM hash.
852  ********************************************************************/
853
854 bool pdb_set_lanman_passwd(struct samu *sampass, const uint8_t pwd[LM_HASH_LEN], enum pdb_value_state flag)
855 {
856         data_blob_clear_free(&sampass->lm_pw);
857
858         /* on keep the password if we are allowing LANMAN authentication */
859
860         if (pwd && lp_lanman_auth() ) {
861                 sampass->lm_pw = data_blob_talloc(sampass, pwd, LM_HASH_LEN);
862         } else {
863                 sampass->lm_pw = data_blob_null;
864         }
865
866         return pdb_set_init_flags(sampass, PDB_LMPASSWD, flag);
867 }
868
869 /*********************************************************************
870  Set the user's password history hash. historyLen is the number of 
871  PW_HISTORY_SALT_LEN+SALTED_MD5_HASH_LEN length
872  entries to store in the history - this must match the size of the uint8_t array
873  in pwd.
874 ********************************************************************/
875
876 bool pdb_set_pw_history(struct samu *sampass, const uint8_t *pwd, uint32_t historyLen, enum pdb_value_state flag)
877 {
878         DATA_BLOB new_nt_pw_his = {};
879
880         if (historyLen && pwd){
881                 new_nt_pw_his = data_blob_talloc(sampass,
882                                                  pwd, historyLen*PW_HISTORY_ENTRY_LEN);
883                 if (new_nt_pw_his.length == 0) {
884                         DEBUG(0, ("pdb_set_pw_history: data_blob_talloc() failed!\n"));
885                         return False;
886                 }
887         }
888
889         data_blob_free(&sampass->nt_pw_his);
890         sampass->nt_pw_his = new_nt_pw_his;
891
892         return pdb_set_init_flags(sampass, PDB_PWHISTORY, flag);
893 }
894
895 /*********************************************************************
896  Set the user's plaintext password only (base procedure, see helper
897  below)
898  ********************************************************************/
899
900 bool pdb_set_plaintext_pw_only(struct samu *sampass, const char *password, enum pdb_value_state flag)
901 {
902         if (password) { 
903                 if (sampass->plaintext_pw!=NULL) 
904                         memset(sampass->plaintext_pw,'\0',strlen(sampass->plaintext_pw)+1);
905
906                 sampass->plaintext_pw = talloc_strdup(sampass, password);
907
908                 if (!sampass->plaintext_pw) {
909                         DEBUG(0, ("pdb_set_unknown_str: talloc_strdup() failed!\n"));
910                         return False;
911                 }
912         } else {
913                 sampass->plaintext_pw = NULL;
914         }
915
916         return pdb_set_init_flags(sampass, PDB_PLAINTEXT_PW, flag);
917 }
918
919 bool pdb_set_bad_password_count(struct samu *sampass, uint16_t bad_password_count, enum pdb_value_state flag)
920 {
921         sampass->bad_password_count = bad_password_count;
922         return pdb_set_init_flags(sampass, PDB_BAD_PASSWORD_COUNT, flag);
923 }
924
925 bool pdb_set_logon_count(struct samu *sampass, uint16_t logon_count, enum pdb_value_state flag)
926 {
927         sampass->logon_count = logon_count;
928         return pdb_set_init_flags(sampass, PDB_LOGON_COUNT, flag);
929 }
930
931 bool pdb_set_country_code(struct samu *sampass, uint16_t country_code,
932                           enum pdb_value_state flag)
933 {
934         sampass->country_code = country_code;
935         return pdb_set_init_flags(sampass, PDB_COUNTRY_CODE, flag);
936 }
937
938 bool pdb_set_code_page(struct samu *sampass, uint16_t code_page,
939                        enum pdb_value_state flag)
940 {
941         sampass->code_page = code_page;
942         return pdb_set_init_flags(sampass, PDB_CODE_PAGE, flag);
943 }
944
945 bool pdb_set_unknown_6(struct samu *sampass, uint32_t unkn, enum pdb_value_state flag)
946 {
947         sampass->unknown_6 = unkn;
948         return pdb_set_init_flags(sampass, PDB_UNKNOWN6, flag);
949 }
950
951 bool pdb_set_hours(struct samu *sampass, const uint8_t *hours, int hours_len,
952                    enum pdb_value_state flag)
953 {
954         if (hours_len > sizeof(sampass->hours)) {
955                 return false;
956         }
957
958         if (!hours) {
959                 memset ((char *)sampass->hours, 0, hours_len);
960         } else {
961                 memcpy (sampass->hours, hours, hours_len);
962         }
963
964         return pdb_set_init_flags(sampass, PDB_HOURS, flag);
965 }
966
967 bool pdb_set_backend_private_data(struct samu *sampass, void *private_data, 
968                                    void (*free_fn)(void **), 
969                                    const struct pdb_methods *my_methods, 
970                                    enum pdb_value_state flag)
971 {
972         if (sampass->backend_private_data &&
973             sampass->backend_private_data_free_fn) {
974                 sampass->backend_private_data_free_fn(
975                         &sampass->backend_private_data);
976         }
977
978         sampass->backend_private_data = private_data;
979         sampass->backend_private_data_free_fn = free_fn;
980         sampass->backend_private_methods = my_methods;
981
982         return pdb_set_init_flags(sampass, PDB_BACKEND_PRIVATE_DATA, flag);
983 }
984
985
986 /* Helpful interfaces to the above */
987
988 bool pdb_set_pass_can_change(struct samu *sampass, bool canchange)
989 {
990         return pdb_set_pass_can_change_time(sampass, 
991                                      canchange ? 0 : pdb_password_change_time_max(),
992                                      PDB_CHANGED);
993 }
994
995
996 /*********************************************************************
997  Set the user's PLAINTEXT password.  Used as an interface to the above.
998  Also sets the last change time to NOW.
999  ********************************************************************/
1000
1001 bool pdb_set_plaintext_passwd(struct samu *sampass, const char *plaintext)
1002 {
1003         uchar new_lanman_p16[LM_HASH_LEN];
1004         uchar new_nt_p16[NT_HASH_LEN];
1005
1006         if (!plaintext)
1007                 return False;
1008
1009         /* Calculate the MD4 hash (NT compatible) of the password */
1010         E_md4hash(plaintext, new_nt_p16);
1011
1012         if (!pdb_set_nt_passwd (sampass, new_nt_p16, PDB_CHANGED)) 
1013                 return False;
1014
1015         if (!E_deshash(plaintext, new_lanman_p16)) {
1016                 /* E_deshash returns false for 'long' passwords (> 14
1017                    DOS chars).  This allows us to match Win2k, which
1018                    does not store a LM hash for these passwords (which
1019                    would reduce the effective password length to 14 */
1020
1021                 if (!pdb_set_lanman_passwd (sampass, NULL, PDB_CHANGED)) 
1022                         return False;
1023         } else {
1024                 if (!pdb_set_lanman_passwd (sampass, new_lanman_p16, PDB_CHANGED)) 
1025                         return False;
1026         }
1027
1028         if (!pdb_set_plaintext_pw_only (sampass, plaintext, PDB_CHANGED)) 
1029                 return False;
1030
1031         if (!pdb_set_pass_last_set_time (sampass, time(NULL), PDB_CHANGED))
1032                 return False;
1033
1034         
1035         return pdb_update_history(sampass, new_nt_p16);
1036 }
1037
1038 /*********************************************************************
1039  Update password history after change 
1040  ********************************************************************/
1041
1042 bool pdb_update_history(struct samu *sampass, const uint8_t new_nt[NT_HASH_LEN])
1043 {
1044         uchar *pwhistory;
1045         uint32_t pwHistLen;
1046         uint32_t current_history_len;
1047         const uint8_t *current_history;
1048
1049         if ((pdb_get_acct_ctrl(sampass) & ACB_NORMAL) == 0) {
1050                 /*
1051                  * No password history for non-user accounts
1052                  */
1053                 return true;
1054         }
1055
1056         pdb_get_account_policy(PDB_POLICY_PASSWORD_HISTORY, &pwHistLen);
1057
1058         if (pwHistLen == 0) {
1059                 /* Set the history length to zero. */
1060                 pdb_set_pw_history(sampass, NULL, 0, PDB_CHANGED);
1061                 return true;
1062         }
1063
1064         /*
1065          * We need to make sure we don't have a race condition here -
1066          * the account policy history length can change between when
1067          * the pw_history was first loaded into the struct samu struct
1068          * and now.... JRA.
1069          */
1070         current_history = pdb_get_pw_history(sampass, &current_history_len);
1071         if ((current_history_len != 0) && (current_history == NULL)) {
1072                 DEBUG(1, ("pdb_update_history: pwhistory == NULL!\n"));
1073                 return false;
1074         }
1075
1076         /*
1077          * Ensure we have space for the needed history. This
1078          * also takes care of an account which did not have
1079          * any history at all so far, i.e. pwhistory==NULL
1080          */
1081         pwhistory = talloc_zero_array(
1082                         sampass, uchar,
1083                         pwHistLen*PW_HISTORY_ENTRY_LEN);
1084         if (!pwhistory) {
1085                 return false;
1086         }
1087
1088         memcpy(pwhistory, current_history,
1089                current_history_len*PW_HISTORY_ENTRY_LEN);
1090
1091         /*
1092          * Make room for the new password in the history list.
1093          */
1094         if (pwHistLen > 1) {
1095                 memmove(&pwhistory[PW_HISTORY_ENTRY_LEN], pwhistory,
1096                         (pwHistLen-1)*PW_HISTORY_ENTRY_LEN );
1097         }
1098
1099         /*
1100          * Fill the salt area with 0-s: this indicates that
1101          * a plain nt hash is stored in the has area.
1102          * The old format was to store a 16 byte salt and
1103          * then an md5hash of the nt_hash concatenated with
1104          * the salt.
1105          */
1106         memset(pwhistory, 0, PW_HISTORY_SALT_LEN);
1107
1108         /*
1109          * Store the plain nt hash in the second 16 bytes.
1110          * The old format was to store the md5 hash of
1111          * the salt+newpw.
1112          */
1113         memcpy(&pwhistory[PW_HISTORY_SALT_LEN], new_nt, SALTED_MD5_HASH_LEN);
1114
1115         pdb_set_pw_history(sampass, pwhistory, pwHistLen, PDB_CHANGED);
1116
1117         return True;
1118
1119 }
1120
1121 /* check for any PDB_SET/CHANGED field and fill the appropriate mask bit */
1122 uint32_t pdb_build_fields_present(struct samu *sampass)
1123 {
1124         /* value set to all for testing */
1125         return 0x00ffffff;
1126 }
1127
1128 /**********************************************************************
1129  Helper function to determine for update_sam_account whether
1130  we need LDAP modification.
1131 *********************************************************************/
1132
1133 bool pdb_element_is_changed(const struct samu *sampass,
1134                             enum pdb_elements element)
1135 {
1136         return IS_SAM_CHANGED(sampass, element);
1137 }
1138
1139 /**********************************************************************
1140  Helper function to determine for update_sam_account whether
1141  we need LDAP modification.
1142  *********************************************************************/
1143
1144 bool pdb_element_is_set_or_changed(const struct samu *sampass,
1145                                    enum pdb_elements element)
1146 {
1147         return (IS_SAM_SET(sampass, element) ||
1148                 IS_SAM_CHANGED(sampass, element));
1149 }