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Fix a panic in the [ug]id2sid valgrind bug fix
[Samba.git] / source / passdb / passdb.c
blob46dab156eefc313a9a0cb88a519d2436b18ac5ab
1 /*
2 Unix SMB/CIFS implementation.
3 Password and authentication handling
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) Simo Sorce 2003
9 Copyright (C) Volker Lendecke 2006
10
11 This program is free software; you can redistribute it and/or modify
12 it under the terms of the GNU General Public License as published by
13 the Free Software Foundation; either version 3 of the License, or
14 (at your option) any later version.
15
16 This program is distributed in the hope that it will be useful,
17 but WITHOUT ANY WARRANTY; without even the implied warranty of
18 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 GNU General Public License for more details.
20
21 You should have received a copy of the GNU General Public License
22 along with this program. If not, see <http://www.gnu.org/licenses/>.
23 */
24
25 #include "includes.h"
26
27 #undef DBGC_CLASS
28 #define DBGC_CLASS DBGC_PASSDB
29
30 /******************************************************************
31 get the default domain/netbios name to be used when
32 testing authentication. For example, if you connect
33 to a Windows member server using a bogus domain name, the
34 Windows box will map the BOGUS\user to DOMAIN\user. A
35 standalone box will map to WKS\user.
36 ******************************************************************/
37
38 const char *my_sam_name(void)
39 {
40 /* standalone servers can only use the local netbios name */
41 if ( lp_server_role() == ROLE_STANDALONE )
42 return global_myname();
43
44 /* Windows domain members default to the DOMAIN
45 name when not specified */
46 return lp_workgroup();
47 }
48
49 /**********************************************************************
50 ***********************************************************************/
51
52 static int samu_destroy(struct samu *user)
53 {
54 data_blob_clear_free( &user->lm_pw );
55 data_blob_clear_free( &user->nt_pw );
56
57 if ( user->plaintext_pw )
58 memset( user->plaintext_pw, 0x0, strlen(user->plaintext_pw) );
59
60 return 0;
61 }
62
63 /**********************************************************************
64 generate a new struct samuser
65 ***********************************************************************/
66
67 struct samu *samu_new( TALLOC_CTX *ctx )
68 {
69 struct samu *user;
70
71 if ( !(user = TALLOC_ZERO_P( ctx, struct samu )) ) {
72 DEBUG(0,("samuser_new: Talloc failed!\n"));
73 return NULL;
74 }
75
76 talloc_set_destructor( user, samu_destroy );
77
78 /* no initial methods */
79
80 user->methods = NULL;
81
82 /* Don't change these timestamp settings without a good reason.
83 They are important for NT member server compatibility. */
84
85 user->logon_time = (time_t)0;
86 user->pass_last_set_time = (time_t)0;
87 user->pass_can_change_time = (time_t)0;
88 user->logoff_time = get_time_t_max();
89 user->kickoff_time = get_time_t_max();
90 user->pass_must_change_time = get_time_t_max();
91 user->fields_present = 0x00ffffff;
92 user->logon_divs = 168; /* hours per week */
93 user->hours_len = 21; /* 21 times 8 bits = 168 */
94 memset(user->hours, 0xff, user->hours_len); /* available at all hours */
95 user->bad_password_count = 0;
96 user->logon_count = 0;
97 user->unknown_6 = 0x000004ec; /* don't know */
98
99 /* Some parts of samba strlen their pdb_get...() returns,
100 so this keeps the interface unchanged for now. */
101
102 user->username = "";
103 user->domain = "";
104 user->nt_username = "";
105 user->full_name = "";
106 user->home_dir = "";
107 user->logon_script = "";
108 user->profile_path = "";
109 user->acct_desc = "";
110 user->workstations = "";
111 user->comment = "";
112 user->munged_dial = "";
113
114 user->plaintext_pw = NULL;
115
116 /* Unless we know otherwise have a Account Control Bit
117 value of 'normal user'. This helps User Manager, which
118 asks for a filtered list of users. */
119
120 user->acct_ctrl = ACB_NORMAL;
121
122
123 return user;
124 }
125
126 /*********************************************************************
127 Initialize a struct samu from a struct passwd including the user
128 and group SIDs. The *user structure is filled out with the Unix
129 attributes and a user SID.
130 *********************************************************************/
131
132 static NTSTATUS samu_set_unix_internal(struct samu *user, const struct passwd *pwd, bool create)
133 {
134 const char *guest_account = lp_guestaccount();
135 const char *domain = global_myname();
136 uint32 urid;
137
138 if ( !pwd ) {
139 return NT_STATUS_NO_SUCH_USER;
140 }
141
142 /* Basic properties based upon the Unix account information */
143
144 pdb_set_username(user, pwd->pw_name, PDB_SET);
145 pdb_set_fullname(user, pwd->pw_gecos, PDB_SET);
146 pdb_set_domain (user, get_global_sam_name(), PDB_DEFAULT);
147 #if 0
148 /* This can lead to a primary group of S-1-22-2-XX which
149 will be rejected by other parts of the Samba code.
150 Rely on pdb_get_group_sid() to "Do The Right Thing" (TM)
151 --jerry */
152
153 gid_to_sid(&group_sid, pwd->pw_gid);
154 pdb_set_group_sid(user, &group_sid, PDB_SET);
155 #endif
156
157 /* save the password structure for later use */
158
159 user->unix_pw = tcopy_passwd( user, pwd );
160
161 /* Special case for the guest account which must have a RID of 501 */
162
163 if ( strequal( pwd->pw_name, guest_account ) ) {
164 if ( !pdb_set_user_sid_from_rid(user, DOMAIN_USER_RID_GUEST, PDB_DEFAULT)) {
165 return NT_STATUS_NO_SUCH_USER;
166 }
167 return NT_STATUS_OK;
168 }
169
170 /* Non-guest accounts...Check for a workstation or user account */
171
172 if (pwd->pw_name[strlen(pwd->pw_name)-1] == '$') {
173 /* workstation */
174
175 if (!pdb_set_acct_ctrl(user, ACB_WSTRUST, PDB_DEFAULT)) {
176 DEBUG(1, ("Failed to set 'workstation account' flags for user %s.\n",
177 pwd->pw_name));
178 return NT_STATUS_INVALID_COMPUTER_NAME;
179 }
180 }
181 else {
182 /* user */
183
184 if (!pdb_set_acct_ctrl(user, ACB_NORMAL, PDB_DEFAULT)) {
185 DEBUG(1, ("Failed to set 'normal account' flags for user %s.\n",
186 pwd->pw_name));
187 return NT_STATUS_INVALID_ACCOUNT_NAME;
188 }
189
190 /* set some basic attributes */
191
192 pdb_set_profile_path(user, talloc_sub_specified(user,
193 lp_logon_path(), pwd->pw_name, domain, pwd->pw_uid, pwd->pw_gid),
194 PDB_DEFAULT);
195 pdb_set_homedir(user, talloc_sub_specified(user,
196 lp_logon_home(), pwd->pw_name, domain, pwd->pw_uid, pwd->pw_gid),
197 PDB_DEFAULT);
198 pdb_set_dir_drive(user, talloc_sub_specified(user,
199 lp_logon_drive(), pwd->pw_name, domain, pwd->pw_uid, pwd->pw_gid),
200 PDB_DEFAULT);
201 pdb_set_logon_script(user, talloc_sub_specified(user,
202 lp_logon_script(), pwd->pw_name, domain, pwd->pw_uid, pwd->pw_gid),
203 PDB_DEFAULT);
204 }
205
206 /* Now deal with the user SID. If we have a backend that can generate
207 RIDs, then do so. But sometimes the caller just wanted a structure
208 initialized and will fill in these fields later (such as from a
209 netr_SamInfo3 structure) */
210
211 if ( create && !pdb_rid_algorithm() ) {
212 uint32 user_rid;
213 DOM_SID user_sid;
214
215 if ( !pdb_new_rid( &user_rid ) ) {
216 DEBUG(3, ("Could not allocate a new RID\n"));
217 return NT_STATUS_ACCESS_DENIED;
218 }
219
220 sid_copy( &user_sid, get_global_sam_sid() );
221 sid_append_rid( &user_sid, user_rid );
222
223 if ( !pdb_set_user_sid(user, &user_sid, PDB_SET) ) {
224 DEBUG(3, ("pdb_set_user_sid failed\n"));
225 return NT_STATUS_INTERNAL_ERROR;
226 }
227
228 return NT_STATUS_OK;
229 }
230
231 /* generate a SID for the user with the RID algorithm */
232
233 urid = algorithmic_pdb_uid_to_user_rid( user->unix_pw->pw_uid );
234
235 if ( !pdb_set_user_sid_from_rid( user, urid, PDB_SET) ) {
236 return NT_STATUS_INTERNAL_ERROR;
237 }
238
239 return NT_STATUS_OK;
240 }
241
242 /********************************************************************
243 Set the Unix user attributes
244 ********************************************************************/
245
246 NTSTATUS samu_set_unix(struct samu *user, const struct passwd *pwd)
247 {
248 return samu_set_unix_internal( user, pwd, False );
249 }
250
251 NTSTATUS samu_alloc_rid_unix(struct samu *user, const struct passwd *pwd)
252 {
253 return samu_set_unix_internal( user, pwd, True );
254 }
255
256 /**********************************************************
257 Encode the account control bits into a string.
258 length = length of string to encode into (including terminating
259 null). length *MUST BE MORE THAN 2* !
260 **********************************************************/
261
262 char *pdb_encode_acct_ctrl(uint32 acct_ctrl, size_t length)
263 {
264 fstring acct_str;
265 char *result;
266
267 size_t i = 0;
268
269 SMB_ASSERT(length <= sizeof(acct_str));
270
271 acct_str[i++] = '[';
272
273 if (acct_ctrl & ACB_PWNOTREQ ) acct_str[i++] = 'N';
274 if (acct_ctrl & ACB_DISABLED ) acct_str[i++] = 'D';
275 if (acct_ctrl & ACB_HOMDIRREQ) acct_str[i++] = 'H';
276 if (acct_ctrl & ACB_TEMPDUP ) acct_str[i++] = 'T';
277 if (acct_ctrl & ACB_NORMAL ) acct_str[i++] = 'U';
278 if (acct_ctrl & ACB_MNS ) acct_str[i++] = 'M';
279 if (acct_ctrl & ACB_WSTRUST ) acct_str[i++] = 'W';
280 if (acct_ctrl & ACB_SVRTRUST ) acct_str[i++] = 'S';
281 if (acct_ctrl & ACB_AUTOLOCK ) acct_str[i++] = 'L';
282 if (acct_ctrl & ACB_PWNOEXP ) acct_str[i++] = 'X';
283 if (acct_ctrl & ACB_DOMTRUST ) acct_str[i++] = 'I';
284
285 for ( ; i < length - 2 ; i++ )
286 acct_str[i] = ' ';
287
288 i = length - 2;
289 acct_str[i++] = ']';
290 acct_str[i++] = '\0';
291
292 result = talloc_strdup(talloc_tos(), acct_str);
293 SMB_ASSERT(result != NULL);
294 return result;
295 }
296
297 /**********************************************************
298 Decode the account control bits from a string.
299 **********************************************************/
300
301 uint32 pdb_decode_acct_ctrl(const char *p)
302 {
303 uint32 acct_ctrl = 0;
304 bool finished = False;
305
306 /*
307 * Check if the account type bits have been encoded after the
308 * NT password (in the form [NDHTUWSLXI]).
309 */
310
311 if (*p != '[')
312 return 0;
313
314 for (p++; *p && !finished; p++) {
315 switch (*p) {
316 case 'N': { acct_ctrl |= ACB_PWNOTREQ ; break; /* 'N'o password. */ }
317 case 'D': { acct_ctrl |= ACB_DISABLED ; break; /* 'D'isabled. */ }
318 case 'H': { acct_ctrl |= ACB_HOMDIRREQ; break; /* 'H'omedir required. */ }
319 case 'T': { acct_ctrl |= ACB_TEMPDUP ; break; /* 'T'emp account. */ }
320 case 'U': { acct_ctrl |= ACB_NORMAL ; break; /* 'U'ser account (normal). */ }
321 case 'M': { acct_ctrl |= ACB_MNS ; break; /* 'M'NS logon user account. What is this ? */ }
322 case 'W': { acct_ctrl |= ACB_WSTRUST ; break; /* 'W'orkstation account. */ }
323 case 'S': { acct_ctrl |= ACB_SVRTRUST ; break; /* 'S'erver account. */ }
324 case 'L': { acct_ctrl |= ACB_AUTOLOCK ; break; /* 'L'ocked account. */ }
325 case 'X': { acct_ctrl |= ACB_PWNOEXP ; break; /* No 'X'piry on password */ }
326 case 'I': { acct_ctrl |= ACB_DOMTRUST ; break; /* 'I'nterdomain trust account. */ }
327 case ' ': { break; }
328 case ':':
329 case '\n':
330 case '\0':
331 case ']':
332 default: { finished = True; }
333 }
334 }
335
336 return acct_ctrl;
337 }
338
339 /*************************************************************
340 Routine to set 32 hex password characters from a 16 byte array.
341 **************************************************************/
342
343 void pdb_sethexpwd(char p[33], const unsigned char *pwd, uint32 acct_ctrl)
344 {
345 if (pwd != NULL) {
346 int i;
347 for (i = 0; i < 16; i++)
348 slprintf(&p[i*2], 3, "%02X", pwd[i]);
349 } else {
350 if (acct_ctrl & ACB_PWNOTREQ)
351 safe_strcpy(p, "NO PASSWORDXXXXXXXXXXXXXXXXXXXXX", 32);
352 else
353 safe_strcpy(p, "XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX", 32);
354 }
355 }
356
357 /*************************************************************
358 Routine to get the 32 hex characters and turn them
359 into a 16 byte array.
360 **************************************************************/
361
362 bool pdb_gethexpwd(const char *p, unsigned char *pwd)
363 {
364 int i;
365 unsigned char lonybble, hinybble;
366 const char *hexchars = "0123456789ABCDEF";
367 char *p1, *p2;
368
369 if (!p)
370 return (False);
371
372 for (i = 0; i < 32; i += 2) {
373 hinybble = toupper_ascii(p[i]);
374 lonybble = toupper_ascii(p[i + 1]);
375
376 p1 = strchr(hexchars, hinybble);
377 p2 = strchr(hexchars, lonybble);
378
379 if (!p1 || !p2)
380 return (False);
381
382 hinybble = PTR_DIFF(p1, hexchars);
383 lonybble = PTR_DIFF(p2, hexchars);
384
385 pwd[i / 2] = (hinybble << 4) | lonybble;
386 }
387 return (True);
388 }
389
390 /*************************************************************
391 Routine to set 42 hex hours characters from a 21 byte array.
392 **************************************************************/
393
394 void pdb_sethexhours(char *p, const unsigned char *hours)
395 {
396 if (hours != NULL) {
397 int i;
398 for (i = 0; i < 21; i++) {
399 slprintf(&p[i*2], 3, "%02X", hours[i]);
400 }
401 } else {
402 safe_strcpy(p, "FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF", 43);
403 }
404 }
405
406 /*************************************************************
407 Routine to get the 42 hex characters and turn them
408 into a 21 byte array.
409 **************************************************************/
410
411 bool pdb_gethexhours(const char *p, unsigned char *hours)
412 {
413 int i;
414 unsigned char lonybble, hinybble;
415 const char *hexchars = "0123456789ABCDEF";
416 char *p1, *p2;
417
418 if (!p) {
419 return (False);
420 }
421
422 for (i = 0; i < 42; i += 2) {
423 hinybble = toupper_ascii(p[i]);
424 lonybble = toupper_ascii(p[i + 1]);
425
426 p1 = strchr(hexchars, hinybble);
427 p2 = strchr(hexchars, lonybble);
428
429 if (!p1 || !p2) {
430 return (False);
431 }
432
433 hinybble = PTR_DIFF(p1, hexchars);
434 lonybble = PTR_DIFF(p2, hexchars);
435
436 hours[i / 2] = (hinybble << 4) | lonybble;
437 }
438 return (True);
439 }
440
441 /********************************************************************
442 ********************************************************************/
443
444 int algorithmic_rid_base(void)
445 {
446 int rid_offset;
447
448 rid_offset = lp_algorithmic_rid_base();
449
450 if (rid_offset < BASE_RID) {
451 /* Try to prevent admin foot-shooting, we can't put algorithmic
452 rids below 1000, that's the 'well known RIDs' on NT */
453 DEBUG(0, ("'algorithmic rid base' must be equal to or above %ld\n", BASE_RID));
454 rid_offset = BASE_RID;
455 }
456 if (rid_offset & 1) {
457 DEBUG(0, ("algorithmic rid base must be even\n"));
458 rid_offset += 1;
459 }
460 return rid_offset;
461 }
462
463 /*******************************************************************
464 Converts NT user RID to a UNIX uid.
465 ********************************************************************/
466
467 uid_t algorithmic_pdb_user_rid_to_uid(uint32 user_rid)
468 {
469 int rid_offset = algorithmic_rid_base();
470 return (uid_t)(((user_rid & (~USER_RID_TYPE)) - rid_offset)/RID_MULTIPLIER);
471 }
472
473 uid_t max_algorithmic_uid(void)
474 {
475 return algorithmic_pdb_user_rid_to_uid(0xfffffffe);
476 }
477
478 /*******************************************************************
479 converts UNIX uid to an NT User RID.
480 ********************************************************************/
481
482 uint32 algorithmic_pdb_uid_to_user_rid(uid_t uid)
483 {
484 int rid_offset = algorithmic_rid_base();
485 return (((((uint32)uid)*RID_MULTIPLIER) + rid_offset) | USER_RID_TYPE);
486 }
487
488 /*******************************************************************
489 Converts NT group RID to a UNIX gid.
490 ********************************************************************/
491
492 gid_t pdb_group_rid_to_gid(uint32 group_rid)
493 {
494 int rid_offset = algorithmic_rid_base();
495 return (gid_t)(((group_rid & (~GROUP_RID_TYPE))- rid_offset)/RID_MULTIPLIER);
496 }
497
498 gid_t max_algorithmic_gid(void)
499 {
500 return pdb_group_rid_to_gid(0xffffffff);
501 }
502
503 /*******************************************************************
504 converts NT Group RID to a UNIX uid.
505
506 warning: you must not call that function only
507 you must do a call to the group mapping first.
508 there is not anymore a direct link between the gid and the rid.
509 ********************************************************************/
510
511 uint32 algorithmic_pdb_gid_to_group_rid(gid_t gid)
512 {
513 int rid_offset = algorithmic_rid_base();
514 return (((((uint32)gid)*RID_MULTIPLIER) + rid_offset) | GROUP_RID_TYPE);
515 }
516
517 /*******************************************************************
518 Decides if a RID is a well known RID.
519 ********************************************************************/
520
521 static bool rid_is_well_known(uint32 rid)
522 {
523 /* Not using rid_offset here, because this is the actual
524 NT fixed value (1000) */
525
526 return (rid < BASE_RID);
527 }
528
529 /*******************************************************************
530 Decides if a RID is a user or group RID.
531 ********************************************************************/
532
533 bool algorithmic_pdb_rid_is_user(uint32 rid)
534 {
535 if ( rid_is_well_known(rid) ) {
536 /*
537 * The only well known user RIDs are DOMAIN_USER_RID_ADMIN
538 * and DOMAIN_USER_RID_GUEST.
539 */
540 if(rid == DOMAIN_USER_RID_ADMIN || rid == DOMAIN_USER_RID_GUEST)
541 return True;
542 } else if((rid & RID_TYPE_MASK) == USER_RID_TYPE) {
543 return True;
544 }
545 return False;
546 }
547
548 /*******************************************************************
549 Convert a name into a SID. Used in the lookup name rpc.
550 ********************************************************************/
551
552 bool lookup_global_sam_name(const char *name, int flags, uint32_t *rid,
553 enum lsa_SidType *type)
554 {
555 GROUP_MAP map;
556 bool ret;
557
558 /* Windows treats "MACHINE\None" as a special name for
559 rid 513 on non-DCs. You cannot create a user or group
560 name "None" on Windows. You will get an error that
561 the group already exists. */
562
563 if ( strequal( name, "None" ) ) {
564 *rid = DOMAIN_GROUP_RID_USERS;
565 *type = SID_NAME_DOM_GRP;
566
567 return True;
568 }
569
570 /* LOOKUP_NAME_GROUP is a hack to allow valid users = @foo to work
571 * correctly in the case where foo also exists as a user. If the flag
572 * is set, don't look for users at all. */
573
574 if ((flags & LOOKUP_NAME_GROUP) == 0) {
575 struct samu *sam_account = NULL;
576 DOM_SID user_sid;
577
578 if ( !(sam_account = samu_new( NULL )) ) {
579 return False;
580 }
581
582 become_root();
583 ret = pdb_getsampwnam(sam_account, name);
584 unbecome_root();
585
586 if (ret) {
587 sid_copy(&user_sid, pdb_get_user_sid(sam_account));
588 }
589
590 TALLOC_FREE(sam_account);
591
592 if (ret) {
593 if (!sid_check_is_in_our_domain(&user_sid)) {
594 DEBUG(0, ("User %s with invalid SID %s in passdb\n",
595 name, sid_string_dbg(&user_sid)));
596 return False;
597 }
598
599 sid_peek_rid(&user_sid, rid);
600 *type = SID_NAME_USER;
601 return True;
602 }
603 }
604
605 /*
606 * Maybe it is a group ?
607 */
608
609 become_root();
610 ret = pdb_getgrnam(&map, name);
611 unbecome_root();
612
613 if (!ret) {
614 return False;
615 }
616
617 /* BUILTIN groups are looked up elsewhere */
618 if (!sid_check_is_in_our_domain(&map.sid)) {
619 DEBUG(10, ("Found group %s (%s) not in our domain -- "
620 "ignoring.", name, sid_string_dbg(&map.sid)));
621 return False;
622 }
623
624 /* yes it's a mapped group */
625 sid_peek_rid(&map.sid, rid);
626 *type = map.sid_name_use;
627 return True;
628 }
629
630 /*************************************************************
631 Change a password entry in the local smbpasswd file.
632 *************************************************************/
633
634 NTSTATUS local_password_change(const char *user_name,
635 int local_flags,
636 const char *new_passwd,
637 char **pp_err_str,
638 char **pp_msg_str)
639 {
640 struct samu *sam_pass=NULL;
641 uint32 other_acb;
642 NTSTATUS result;
643
644 *pp_err_str = NULL;
645 *pp_msg_str = NULL;
646
647 /* Get the smb passwd entry for this user */
648
649 if ( !(sam_pass = samu_new( NULL )) ) {
650 return NT_STATUS_NO_MEMORY;
651 }
652
653 become_root();
654 if(!pdb_getsampwnam(sam_pass, user_name)) {
655 unbecome_root();
656 TALLOC_FREE(sam_pass);
657
658 if ((local_flags & LOCAL_ADD_USER) || (local_flags & LOCAL_DELETE_USER)) {
659 int tmp_debug = DEBUGLEVEL;
660 struct passwd *pwd;
661
662 /* Might not exist in /etc/passwd. */
663
664 if (tmp_debug < 1) {
665 DEBUGLEVEL = 1;
666 }
667
668 if ( !(pwd = getpwnam_alloc( NULL, user_name)) ) {
669 return NT_STATUS_NO_SUCH_USER;
670 }
671
672 /* create the struct samu and initialize the basic Unix properties */
673
674 if ( !(sam_pass = samu_new( NULL )) ) {
675 return NT_STATUS_NO_MEMORY;
676 }
677
678 result = samu_set_unix( sam_pass, pwd );
679
680 DEBUGLEVEL = tmp_debug;
681
682 TALLOC_FREE( pwd );
683
684 if (NT_STATUS_EQUAL(result, NT_STATUS_INVALID_PRIMARY_GROUP)) {
685 return result;
686 }
687
688 if (!NT_STATUS_IS_OK(result)) {
689 asprintf(pp_err_str, "Failed to " "initialize account for user %s: %s\n",
690 user_name, nt_errstr(result));
691 return result;
692 }
693 } else {
694 asprintf(pp_err_str, "Failed to find entry for user %s.\n", user_name);
695 return NT_STATUS_NO_SUCH_USER;
696 }
697 } else {
698 unbecome_root();
699 /* the entry already existed */
700 local_flags &= ~LOCAL_ADD_USER;
701 }
702
703 /* the 'other' acb bits not being changed here */
704 other_acb = (pdb_get_acct_ctrl(sam_pass) & (~(ACB_WSTRUST|ACB_DOMTRUST|ACB_SVRTRUST|ACB_NORMAL)));
705 if (local_flags & LOCAL_TRUST_ACCOUNT) {
706 if (!pdb_set_acct_ctrl(sam_pass, ACB_WSTRUST | other_acb, PDB_CHANGED) ) {
707 asprintf(pp_err_str, "Failed to set 'trusted workstation account' flags for user %s.\n", user_name);
708 TALLOC_FREE(sam_pass);
709 return NT_STATUS_UNSUCCESSFUL;
710 }
711 } else if (local_flags & LOCAL_INTERDOM_ACCOUNT) {
712 if (!pdb_set_acct_ctrl(sam_pass, ACB_DOMTRUST | other_acb, PDB_CHANGED)) {
713 asprintf(pp_err_str, "Failed to set 'domain trust account' flags for user %s.\n", user_name);
714 TALLOC_FREE(sam_pass);
715 return NT_STATUS_UNSUCCESSFUL;
716 }
717 } else {
718 if (!pdb_set_acct_ctrl(sam_pass, ACB_NORMAL | other_acb, PDB_CHANGED)) {
719 asprintf(pp_err_str, "Failed to set 'normal account' flags for user %s.\n", user_name);
720 TALLOC_FREE(sam_pass);
721 return NT_STATUS_UNSUCCESSFUL;
722 }
723 }
724
725 /*
726 * We are root - just write the new password
727 * and the valid last change time.
728 */
729
730 if (local_flags & LOCAL_DISABLE_USER) {
731 if (!pdb_set_acct_ctrl (sam_pass, pdb_get_acct_ctrl(sam_pass)|ACB_DISABLED, PDB_CHANGED)) {
732 asprintf(pp_err_str, "Failed to set 'disabled' flag for user %s.\n", user_name);
733 TALLOC_FREE(sam_pass);
734 return NT_STATUS_UNSUCCESSFUL;
735 }
736 } else if (local_flags & LOCAL_ENABLE_USER) {
737 if (!pdb_set_acct_ctrl (sam_pass, pdb_get_acct_ctrl(sam_pass)&(~ACB_DISABLED), PDB_CHANGED)) {
738 asprintf(pp_err_str, "Failed to unset 'disabled' flag for user %s.\n", user_name);
739 TALLOC_FREE(sam_pass);
740 return NT_STATUS_UNSUCCESSFUL;
741 }
742 }
743
744 if (local_flags & LOCAL_SET_NO_PASSWORD) {
745 if (!pdb_set_acct_ctrl (sam_pass, pdb_get_acct_ctrl(sam_pass)|ACB_PWNOTREQ, PDB_CHANGED)) {
746 asprintf(pp_err_str, "Failed to set 'no password required' flag for user %s.\n", user_name);
747 TALLOC_FREE(sam_pass);
748 return NT_STATUS_UNSUCCESSFUL;
749 }
750 } else if (local_flags & LOCAL_SET_PASSWORD) {
751 /*
752 * If we're dealing with setting a completely empty user account
753 * ie. One with a password of 'XXXX', but not set disabled (like
754 * an account created from scratch) then if the old password was
755 * 'XX's then getsmbpwent will have set the ACB_DISABLED flag.
756 * We remove that as we're giving this user their first password
757 * and the decision hasn't really been made to disable them (ie.
758 * don't create them disabled). JRA.
759 */
760 if ((pdb_get_lanman_passwd(sam_pass)==NULL) && (pdb_get_acct_ctrl(sam_pass)&ACB_DISABLED)) {
761 if (!pdb_set_acct_ctrl (sam_pass, pdb_get_acct_ctrl(sam_pass)&(~ACB_DISABLED), PDB_CHANGED)) {
762 asprintf(pp_err_str, "Failed to unset 'disabled' flag for user %s.\n", user_name);
763 TALLOC_FREE(sam_pass);
764 return NT_STATUS_UNSUCCESSFUL;
765 }
766 }
767 if (!pdb_set_acct_ctrl (sam_pass, pdb_get_acct_ctrl(sam_pass)&(~ACB_PWNOTREQ), PDB_CHANGED)) {
768 asprintf(pp_err_str, "Failed to unset 'no password required' flag for user %s.\n", user_name);
769 TALLOC_FREE(sam_pass);
770 return NT_STATUS_UNSUCCESSFUL;
771 }
772
773 if (!pdb_set_plaintext_passwd (sam_pass, new_passwd)) {
774 asprintf(pp_err_str, "Failed to set password for user %s.\n", user_name);
775 TALLOC_FREE(sam_pass);
776 return NT_STATUS_UNSUCCESSFUL;
777 }
778 }
779
780 if (local_flags & LOCAL_ADD_USER) {
781 if (NT_STATUS_IS_OK(pdb_add_sam_account(sam_pass))) {
782 asprintf(pp_msg_str, "Added user %s.\n", user_name);
783 TALLOC_FREE(sam_pass);
784 return NT_STATUS_OK;
785 } else {
786 asprintf(pp_err_str, "Failed to add entry for user %s.\n", user_name);
787 TALLOC_FREE(sam_pass);
788 return NT_STATUS_UNSUCCESSFUL;
789 }
790 } else if (local_flags & LOCAL_DELETE_USER) {
791 if (!NT_STATUS_IS_OK(pdb_delete_sam_account(sam_pass))) {
792 asprintf(pp_err_str, "Failed to delete entry for user %s.\n", user_name);
793 TALLOC_FREE(sam_pass);
794 return NT_STATUS_UNSUCCESSFUL;
795 }
796 asprintf(pp_msg_str, "Deleted user %s.\n", user_name);
797 } else {
798 result = pdb_update_sam_account(sam_pass);
799 if(!NT_STATUS_IS_OK(result)) {
800 asprintf(pp_err_str, "Failed to modify entry for user %s.\n", user_name);
801 TALLOC_FREE(sam_pass);
802 return result;
803 }
804 if(local_flags & LOCAL_DISABLE_USER)
805 asprintf(pp_msg_str, "Disabled user %s.\n", user_name);
806 else if (local_flags & LOCAL_ENABLE_USER)
807 asprintf(pp_msg_str, "Enabled user %s.\n", user_name);
808 else if (local_flags & LOCAL_SET_NO_PASSWORD)
809 asprintf(pp_msg_str, "User %s password set to none.\n", user_name);
810 }
811
812 TALLOC_FREE(sam_pass);
813 return NT_STATUS_OK;
814 }
815
816 /**********************************************************************
817 Marshall/unmarshall struct samu structs.
818 *********************************************************************/
819
820 #define TDB_FORMAT_STRING_V3 "dddddddBBBBBBBBBBBBddBBBdwdBwwd"
821
822 /*********************************************************************
823 *********************************************************************/
824
825 bool init_sam_from_buffer_v3(struct samu *sampass, uint8 *buf, uint32 buflen)
826 {
827
828 /* times are stored as 32bit integer
829 take care on system with 64bit wide time_t
830 --SSS */
831 uint32 logon_time,
832 logoff_time,
833 kickoff_time,
834 bad_password_time,
835 pass_last_set_time,
836 pass_can_change_time,
837 pass_must_change_time;
838 char *username = NULL;
839 char *domain = NULL;
840 char *nt_username = NULL;
841 char *dir_drive = NULL;
842 char *unknown_str = NULL;
843 char *munged_dial = NULL;
844 char *fullname = NULL;
845 char *homedir = NULL;
846 char *logon_script = NULL;
847 char *profile_path = NULL;
848 char *acct_desc = NULL;
849 char *workstations = NULL;
850 uint32 username_len, domain_len, nt_username_len,
851 dir_drive_len, unknown_str_len, munged_dial_len,
852 fullname_len, homedir_len, logon_script_len,
853 profile_path_len, acct_desc_len, workstations_len;
854
855 uint32 user_rid, group_rid, hours_len, unknown_6, acct_ctrl;
856 uint16 logon_divs;
857 uint16 bad_password_count, logon_count;
858 uint8 *hours = NULL;
859 uint8 *lm_pw_ptr = NULL, *nt_pw_ptr = NULL, *nt_pw_hist_ptr = NULL;
860 uint32 len = 0;
861 uint32 lm_pw_len, nt_pw_len, nt_pw_hist_len, hourslen;
862 uint32 pwHistLen = 0;
863 bool ret = True;
864 fstring tmp_string;
865 bool expand_explicit = lp_passdb_expand_explicit();
866
867 if(sampass == NULL || buf == NULL) {
868 DEBUG(0, ("init_sam_from_buffer_v3: NULL parameters found!\n"));
869 return False;
870 }
871
872 /* TDB_FORMAT_STRING_V3 "dddddddBBBBBBBBBBBBddBBBdwdBwwd" */
873
874 /* unpack the buffer into variables */
875 len = tdb_unpack (buf, buflen, TDB_FORMAT_STRING_V3,
876 &logon_time, /* d */
877 &logoff_time, /* d */
878 &kickoff_time, /* d */
879 &bad_password_time, /* d */
880 &pass_last_set_time, /* d */
881 &pass_can_change_time, /* d */
882 &pass_must_change_time, /* d */
883 &username_len, &username, /* B */
884 &domain_len, &domain, /* B */
885 &nt_username_len, &nt_username, /* B */
886 &fullname_len, &fullname, /* B */
887 &homedir_len, &homedir, /* B */
888 &dir_drive_len, &dir_drive, /* B */
889 &logon_script_len, &logon_script, /* B */
890 &profile_path_len, &profile_path, /* B */
891 &acct_desc_len, &acct_desc, /* B */
892 &workstations_len, &workstations, /* B */
893 &unknown_str_len, &unknown_str, /* B */
894 &munged_dial_len, &munged_dial, /* B */
895 &user_rid, /* d */
896 &group_rid, /* d */
897 &lm_pw_len, &lm_pw_ptr, /* B */
898 &nt_pw_len, &nt_pw_ptr, /* B */
899 /* Change from V1 is addition of password history field. */
900 &nt_pw_hist_len, &nt_pw_hist_ptr, /* B */
901 /* Change from V2 is the uint32 acb_mask */
902 &acct_ctrl, /* d */
903 /* Also "remove_me" field was removed. */
904 &logon_divs, /* w */
905 &hours_len, /* d */
906 &hourslen, &hours, /* B */
907 &bad_password_count, /* w */
908 &logon_count, /* w */
909 &unknown_6); /* d */
910
911 if (len == (uint32) -1) {
912 ret = False;
913 goto done;
914 }
915
916 pdb_set_logon_time(sampass, convert_uint32_to_time_t(logon_time), PDB_SET);
917 pdb_set_logoff_time(sampass, convert_uint32_to_time_t(logoff_time), PDB_SET);
918 pdb_set_kickoff_time(sampass, convert_uint32_to_time_t(kickoff_time), PDB_SET);
919 pdb_set_bad_password_time(sampass, convert_uint32_to_time_t(bad_password_time), PDB_SET);
920 pdb_set_pass_can_change_time(sampass, convert_uint32_to_time_t(pass_can_change_time), PDB_SET);
921 pdb_set_pass_must_change_time(sampass, convert_uint32_to_time_t(pass_must_change_time), PDB_SET);
922 pdb_set_pass_last_set_time(sampass, convert_uint32_to_time_t(pass_last_set_time), PDB_SET);
923
924 pdb_set_username(sampass, username, PDB_SET);
925 pdb_set_domain(sampass, domain, PDB_SET);
926 pdb_set_nt_username(sampass, nt_username, PDB_SET);
927 pdb_set_fullname(sampass, fullname, PDB_SET);
928
929 if (homedir) {
930 fstrcpy( tmp_string, homedir );
931 if (expand_explicit) {
932 standard_sub_basic( username, domain, tmp_string,
933 sizeof(tmp_string) );
934 }
935 pdb_set_homedir(sampass, tmp_string, PDB_SET);
936 }
937 else {
938 pdb_set_homedir(sampass,
939 talloc_sub_basic(sampass, username, domain,
940 lp_logon_home()),
941 PDB_DEFAULT);
942 }
943
944 if (dir_drive)
945 pdb_set_dir_drive(sampass, dir_drive, PDB_SET);
946 else
947 pdb_set_dir_drive(sampass, lp_logon_drive(), PDB_DEFAULT );
948
949 if (logon_script) {
950 fstrcpy( tmp_string, logon_script );
951 if (expand_explicit) {
952 standard_sub_basic( username, domain, tmp_string,
953 sizeof(tmp_string) );
954 }
955 pdb_set_logon_script(sampass, tmp_string, PDB_SET);
956 }
957 else {
958 pdb_set_logon_script(sampass,
959 talloc_sub_basic(sampass, username, domain,
960 lp_logon_script()),
961 PDB_DEFAULT);
962 }
963
964 if (profile_path) {
965 fstrcpy( tmp_string, profile_path );
966 if (expand_explicit) {
967 standard_sub_basic( username, domain, tmp_string,
968 sizeof(tmp_string) );
969 }
970 pdb_set_profile_path(sampass, tmp_string, PDB_SET);
971 }
972 else {
973 pdb_set_profile_path(sampass,
974 talloc_sub_basic(sampass, username, domain, lp_logon_path()),
975 PDB_DEFAULT);
976 }
977
978 pdb_set_acct_desc(sampass, acct_desc, PDB_SET);
979 pdb_set_workstations(sampass, workstations, PDB_SET);
980 pdb_set_munged_dial(sampass, munged_dial, PDB_SET);
981
982 if (lm_pw_ptr && lm_pw_len == LM_HASH_LEN) {
983 if (!pdb_set_lanman_passwd(sampass, lm_pw_ptr, PDB_SET)) {
984 ret = False;
985 goto done;
986 }
987 }
988
989 if (nt_pw_ptr && nt_pw_len == NT_HASH_LEN) {
990 if (!pdb_set_nt_passwd(sampass, nt_pw_ptr, PDB_SET)) {
991 ret = False;
992 goto done;
993 }
994 }
995
996 pdb_get_account_policy(AP_PASSWORD_HISTORY, &pwHistLen);
997 if (pwHistLen) {
998 uint8 *pw_hist = (uint8 *)SMB_MALLOC(pwHistLen * PW_HISTORY_ENTRY_LEN);
999 if (!pw_hist) {
1000 ret = False;
1001 goto done;
1002 }
1003 memset(pw_hist, '\0', pwHistLen * PW_HISTORY_ENTRY_LEN);
1004 if (nt_pw_hist_ptr && nt_pw_hist_len) {
1005 int i;
1006 SMB_ASSERT((nt_pw_hist_len % PW_HISTORY_ENTRY_LEN) == 0);
1007 nt_pw_hist_len /= PW_HISTORY_ENTRY_LEN;
1008 for (i = 0; (i < pwHistLen) && (i < nt_pw_hist_len); i++) {
1009 memcpy(&pw_hist[i*PW_HISTORY_ENTRY_LEN],
1010 &nt_pw_hist_ptr[i*PW_HISTORY_ENTRY_LEN],
1011 PW_HISTORY_ENTRY_LEN);
1012 }
1013 }
1014 if (!pdb_set_pw_history(sampass, pw_hist, pwHistLen, PDB_SET)) {
1015 SAFE_FREE(pw_hist);
1016 ret = False;
1017 goto done;
1018 }
1019 SAFE_FREE(pw_hist);
1020 } else {
1021 pdb_set_pw_history(sampass, NULL, 0, PDB_SET);
1022 }
1023
1024 pdb_set_user_sid_from_rid(sampass, user_rid, PDB_SET);
1025 pdb_set_hours_len(sampass, hours_len, PDB_SET);
1026 pdb_set_bad_password_count(sampass, bad_password_count, PDB_SET);
1027 pdb_set_logon_count(sampass, logon_count, PDB_SET);
1028 pdb_set_unknown_6(sampass, unknown_6, PDB_SET);
1029 /* Change from V2 is the uint32 acct_ctrl */
1030 pdb_set_acct_ctrl(sampass, acct_ctrl, PDB_SET);
1031 pdb_set_logon_divs(sampass, logon_divs, PDB_SET);
1032 pdb_set_hours(sampass, hours, PDB_SET);
1033
1034 done:
1035
1036 SAFE_FREE(username);
1037 SAFE_FREE(domain);
1038 SAFE_FREE(nt_username);
1039 SAFE_FREE(fullname);
1040 SAFE_FREE(homedir);
1041 SAFE_FREE(dir_drive);
1042 SAFE_FREE(logon_script);
1043 SAFE_FREE(profile_path);
1044 SAFE_FREE(acct_desc);
1045 SAFE_FREE(workstations);
1046 SAFE_FREE(munged_dial);
1047 SAFE_FREE(unknown_str);
1048 SAFE_FREE(lm_pw_ptr);
1049 SAFE_FREE(nt_pw_ptr);
1050 SAFE_FREE(nt_pw_hist_ptr);
1051 SAFE_FREE(hours);
1052
1053 return ret;
1054 }
1055
1056 /*********************************************************************
1057 *********************************************************************/
1058
1059 uint32 init_buffer_from_sam_v3 (uint8 **buf, struct samu *sampass, bool size_only)
1060 {
1061 size_t len, buflen;
1062
1063 /* times are stored as 32bit integer
1064 take care on system with 64bit wide time_t
1065 --SSS */
1066 uint32 logon_time,
1067 logoff_time,
1068 kickoff_time,
1069 bad_password_time,
1070 pass_last_set_time,
1071 pass_can_change_time,
1072 pass_must_change_time;
1073
1074 uint32 user_rid, group_rid;
1075
1076 const char *username;
1077 const char *domain;
1078 const char *nt_username;
1079 const char *dir_drive;
1080 const char *unknown_str;
1081 const char *munged_dial;
1082 const char *fullname;
1083 const char *homedir;
1084 const char *logon_script;
1085 const char *profile_path;
1086 const char *acct_desc;
1087 const char *workstations;
1088 uint32 username_len, domain_len, nt_username_len,
1089 dir_drive_len, unknown_str_len, munged_dial_len,
1090 fullname_len, homedir_len, logon_script_len,
1091 profile_path_len, acct_desc_len, workstations_len;
1092
1093 const uint8 *lm_pw;
1094 const uint8 *nt_pw;
1095 const uint8 *nt_pw_hist;
1096 uint32 lm_pw_len = 16;
1097 uint32 nt_pw_len = 16;
1098 uint32 nt_pw_hist_len;
1099 uint32 pwHistLen = 0;
1100
1101 *buf = NULL;
1102 buflen = 0;
1103
1104 logon_time = convert_time_t_to_uint32(pdb_get_logon_time(sampass));
1105 logoff_time = convert_time_t_to_uint32(pdb_get_logoff_time(sampass));
1106 kickoff_time = convert_time_t_to_uint32(pdb_get_kickoff_time(sampass));
1107 bad_password_time = convert_time_t_to_uint32(pdb_get_bad_password_time(sampass));
1108 pass_can_change_time = convert_time_t_to_uint32(pdb_get_pass_can_change_time_noncalc(sampass));
1109 pass_must_change_time = convert_time_t_to_uint32(pdb_get_pass_must_change_time(sampass));
1110 pass_last_set_time = convert_time_t_to_uint32(pdb_get_pass_last_set_time(sampass));
1111
1112 user_rid = pdb_get_user_rid(sampass);
1113 group_rid = pdb_get_group_rid(sampass);
1114
1115 username = pdb_get_username(sampass);
1116 if (username) {
1117 username_len = strlen(username) +1;
1118 } else {
1119 username_len = 0;
1120 }
1121
1122 domain = pdb_get_domain(sampass);
1123 if (domain) {
1124 domain_len = strlen(domain) +1;
1125 } else {
1126 domain_len = 0;
1127 }
1128
1129 nt_username = pdb_get_nt_username(sampass);
1130 if (nt_username) {
1131 nt_username_len = strlen(nt_username) +1;
1132 } else {
1133 nt_username_len = 0;
1134 }
1135
1136 fullname = pdb_get_fullname(sampass);
1137 if (fullname) {
1138 fullname_len = strlen(fullname) +1;
1139 } else {
1140 fullname_len = 0;
1141 }
1142
1143 /*
1144 * Only updates fields which have been set (not defaults from smb.conf)
1145 */
1146
1147 if (!IS_SAM_DEFAULT(sampass, PDB_DRIVE)) {
1148 dir_drive = pdb_get_dir_drive(sampass);
1149 } else {
1150 dir_drive = NULL;
1151 }
1152 if (dir_drive) {
1153 dir_drive_len = strlen(dir_drive) +1;
1154 } else {
1155 dir_drive_len = 0;
1156 }
1157
1158 if (!IS_SAM_DEFAULT(sampass, PDB_SMBHOME)) {
1159 homedir = pdb_get_homedir(sampass);
1160 } else {
1161 homedir = NULL;
1162 }
1163 if (homedir) {
1164 homedir_len = strlen(homedir) +1;
1165 } else {
1166 homedir_len = 0;
1167 }
1168
1169 if (!IS_SAM_DEFAULT(sampass, PDB_LOGONSCRIPT)) {
1170 logon_script = pdb_get_logon_script(sampass);
1171 } else {
1172 logon_script = NULL;
1173 }
1174 if (logon_script) {
1175 logon_script_len = strlen(logon_script) +1;
1176 } else {
1177 logon_script_len = 0;
1178 }
1179
1180 if (!IS_SAM_DEFAULT(sampass, PDB_PROFILE)) {
1181 profile_path = pdb_get_profile_path(sampass);
1182 } else {
1183 profile_path = NULL;
1184 }
1185 if (profile_path) {
1186 profile_path_len = strlen(profile_path) +1;
1187 } else {
1188 profile_path_len = 0;
1189 }
1190
1191 lm_pw = pdb_get_lanman_passwd(sampass);
1192 if (!lm_pw) {
1193 lm_pw_len = 0;
1194 }
1195
1196 nt_pw = pdb_get_nt_passwd(sampass);
1197 if (!nt_pw) {
1198 nt_pw_len = 0;
1199 }
1200
1201 pdb_get_account_policy(AP_PASSWORD_HISTORY, &pwHistLen);
1202 nt_pw_hist = pdb_get_pw_history(sampass, &nt_pw_hist_len);
1203 if (pwHistLen && nt_pw_hist && nt_pw_hist_len) {
1204 nt_pw_hist_len *= PW_HISTORY_ENTRY_LEN;
1205 } else {
1206 nt_pw_hist_len = 0;
1207 }
1208
1209 acct_desc = pdb_get_acct_desc(sampass);
1210 if (acct_desc) {
1211 acct_desc_len = strlen(acct_desc) +1;
1212 } else {
1213 acct_desc_len = 0;
1214 }
1215
1216 workstations = pdb_get_workstations(sampass);
1217 if (workstations) {
1218 workstations_len = strlen(workstations) +1;
1219 } else {
1220 workstations_len = 0;
1221 }
1222
1223 unknown_str = NULL;
1224 unknown_str_len = 0;
1225
1226 munged_dial = pdb_get_munged_dial(sampass);
1227 if (munged_dial) {
1228 munged_dial_len = strlen(munged_dial) +1;
1229 } else {
1230 munged_dial_len = 0;
1231 }
1232
1233 /* TDB_FORMAT_STRING_V3 "dddddddBBBBBBBBBBBBddBBBdwdBwwd" */
1234
1235 /* one time to get the size needed */
1236 len = tdb_pack(NULL, 0, TDB_FORMAT_STRING_V3,
1237 logon_time, /* d */
1238 logoff_time, /* d */
1239 kickoff_time, /* d */
1240 bad_password_time, /* d */
1241 pass_last_set_time, /* d */
1242 pass_can_change_time, /* d */
1243 pass_must_change_time, /* d */
1244 username_len, username, /* B */
1245 domain_len, domain, /* B */
1246 nt_username_len, nt_username, /* B */
1247 fullname_len, fullname, /* B */
1248 homedir_len, homedir, /* B */
1249 dir_drive_len, dir_drive, /* B */
1250 logon_script_len, logon_script, /* B */
1251 profile_path_len, profile_path, /* B */
1252 acct_desc_len, acct_desc, /* B */
1253 workstations_len, workstations, /* B */
1254 unknown_str_len, unknown_str, /* B */
1255 munged_dial_len, munged_dial, /* B */
1256 user_rid, /* d */
1257 group_rid, /* d */
1258 lm_pw_len, lm_pw, /* B */
1259 nt_pw_len, nt_pw, /* B */
1260 nt_pw_hist_len, nt_pw_hist, /* B */
1261 pdb_get_acct_ctrl(sampass), /* d */
1262 pdb_get_logon_divs(sampass), /* w */
1263 pdb_get_hours_len(sampass), /* d */
1264 MAX_HOURS_LEN, pdb_get_hours(sampass), /* B */
1265 pdb_get_bad_password_count(sampass), /* w */
1266 pdb_get_logon_count(sampass), /* w */
1267 pdb_get_unknown_6(sampass)); /* d */
1268
1269 if (size_only) {
1270 return buflen;
1271 }
1272
1273 /* malloc the space needed */
1274 if ( (*buf=(uint8*)SMB_MALLOC(len)) == NULL) {
1275 DEBUG(0,("init_buffer_from_sam_v3: Unable to malloc() memory for buffer!\n"));
1276 return (-1);
1277 }
1278
1279 /* now for the real call to tdb_pack() */
1280 buflen = tdb_pack(*buf, len, TDB_FORMAT_STRING_V3,
1281 logon_time, /* d */
1282 logoff_time, /* d */
1283 kickoff_time, /* d */
1284 bad_password_time, /* d */
1285 pass_last_set_time, /* d */
1286 pass_can_change_time, /* d */
1287 pass_must_change_time, /* d */
1288 username_len, username, /* B */
1289 domain_len, domain, /* B */
1290 nt_username_len, nt_username, /* B */
1291 fullname_len, fullname, /* B */
1292 homedir_len, homedir, /* B */
1293 dir_drive_len, dir_drive, /* B */
1294 logon_script_len, logon_script, /* B */
1295 profile_path_len, profile_path, /* B */
1296 acct_desc_len, acct_desc, /* B */
1297 workstations_len, workstations, /* B */
1298 unknown_str_len, unknown_str, /* B */
1299 munged_dial_len, munged_dial, /* B */
1300 user_rid, /* d */
1301 group_rid, /* d */
1302 lm_pw_len, lm_pw, /* B */
1303 nt_pw_len, nt_pw, /* B */
1304 nt_pw_hist_len, nt_pw_hist, /* B */
1305 pdb_get_acct_ctrl(sampass), /* d */
1306 pdb_get_logon_divs(sampass), /* w */
1307 pdb_get_hours_len(sampass), /* d */
1308 MAX_HOURS_LEN, pdb_get_hours(sampass), /* B */
1309 pdb_get_bad_password_count(sampass), /* w */
1310 pdb_get_logon_count(sampass), /* w */
1311 pdb_get_unknown_6(sampass)); /* d */
1312
1313 /* check to make sure we got it correct */
1314 if (buflen != len) {
1315 DEBUG(0, ("init_buffer_from_sam_v3: somthing odd is going on here: bufflen (%lu) != len (%lu) in tdb_pack operations!\n",
1316 (unsigned long)buflen, (unsigned long)len));
1317 /* error */
1318 SAFE_FREE (*buf);
1319 return (-1);
1320 }
1321
1322 return (buflen);
1323 }
1324
1325
1326 /*********************************************************************
1327 *********************************************************************/
1328
1329 bool pdb_copy_sam_account(struct samu *dst, struct samu *src )
1330 {
1331 uint8 *buf = NULL;
1332 int len;
1333
1334 len = init_buffer_from_sam_v3(&buf, src, False);
1335 if (len == -1 || !buf) {
1336 SAFE_FREE(buf);
1337 return False;
1338 }
1339
1340 if (!init_sam_from_buffer_v3( dst, buf, len )) {
1341 free(buf);
1342 return False;
1343 }
1344
1345 dst->methods = src->methods;
1346
1347 if ( src->unix_pw ) {
1348 dst->unix_pw = tcopy_passwd( dst, src->unix_pw );
1349 if (!dst->unix_pw) {
1350 free(buf);
1351 return False;
1352 }
1353 }
1354
1355 free(buf);
1356 return True;
1357 }
1358
1359 /*********************************************************************
1360 Update the bad password count checking the AP_RESET_COUNT_TIME
1361 *********************************************************************/
1362
1363 bool pdb_update_bad_password_count(struct samu *sampass, bool *updated)
1364 {
1365 time_t LastBadPassword;
1366 uint16 BadPasswordCount;
1367 uint32 resettime;
1368 bool res;
1369
1370 BadPasswordCount = pdb_get_bad_password_count(sampass);
1371 if (!BadPasswordCount) {
1372 DEBUG(9, ("No bad password attempts.\n"));
1373 return True;
1374 }
1375
1376 become_root();
1377 res = pdb_get_account_policy(AP_RESET_COUNT_TIME, &resettime);
1378 unbecome_root();
1379
1380 if (!res) {
1381 DEBUG(0, ("pdb_update_bad_password_count: pdb_get_account_policy failed.\n"));
1382 return False;
1383 }
1384
1385 /* First, check if there is a reset time to compare */
1386 if ((resettime == (uint32) -1) || (resettime == 0)) {
1387 DEBUG(9, ("No reset time, can't reset bad pw count\n"));
1388 return True;
1389 }
1390
1391 LastBadPassword = pdb_get_bad_password_time(sampass);
1392 DEBUG(7, ("LastBadPassword=%d, resettime=%d, current time=%d.\n",
1393 (uint32) LastBadPassword, resettime, (uint32)time(NULL)));
1394 if (time(NULL) > (LastBadPassword + convert_uint32_to_time_t(resettime)*60)){
1395 pdb_set_bad_password_count(sampass, 0, PDB_CHANGED);
1396 pdb_set_bad_password_time(sampass, 0, PDB_CHANGED);
1397 if (updated) {
1398 *updated = True;
1399 }
1400 }
1401
1402 return True;
1403 }
1404
1405 /*********************************************************************
1406 Update the ACB_AUTOLOCK flag checking the AP_LOCK_ACCOUNT_DURATION
1407 *********************************************************************/
1408
1409 bool pdb_update_autolock_flag(struct samu *sampass, bool *updated)
1410 {
1411 uint32 duration;
1412 time_t LastBadPassword;
1413 bool res;
1414
1415 if (!(pdb_get_acct_ctrl(sampass) & ACB_AUTOLOCK)) {
1416 DEBUG(9, ("pdb_update_autolock_flag: Account %s not autolocked, no check needed\n",
1417 pdb_get_username(sampass)));
1418 return True;
1419 }
1420
1421 become_root();
1422 res = pdb_get_account_policy(AP_LOCK_ACCOUNT_DURATION, &duration);
1423 unbecome_root();
1424
1425 if (!res) {
1426 DEBUG(0, ("pdb_update_autolock_flag: pdb_get_account_policy failed.\n"));
1427 return False;
1428 }
1429
1430 /* First, check if there is a duration to compare */
1431 if ((duration == (uint32) -1) || (duration == 0)) {
1432 DEBUG(9, ("pdb_update_autolock_flag: No reset duration, can't reset autolock\n"));
1433 return True;
1434 }
1435
1436 LastBadPassword = pdb_get_bad_password_time(sampass);
1437 DEBUG(7, ("pdb_update_autolock_flag: Account %s, LastBadPassword=%d, duration=%d, current time =%d.\n",
1438 pdb_get_username(sampass), (uint32)LastBadPassword, duration*60, (uint32)time(NULL)));
1439
1440 if (LastBadPassword == (time_t)0) {
1441 DEBUG(1,("pdb_update_autolock_flag: Account %s "
1442 "administratively locked out with no bad password "
1443 "time. Leaving locked out.\n",
1444 pdb_get_username(sampass) ));
1445 return True;
1446 }
1447
1448 if ((time(NULL) > (LastBadPassword + convert_uint32_to_time_t(duration) * 60))) {
1449 pdb_set_acct_ctrl(sampass,
1450 pdb_get_acct_ctrl(sampass) & ~ACB_AUTOLOCK,
1451 PDB_CHANGED);
1452 pdb_set_bad_password_count(sampass, 0, PDB_CHANGED);
1453 pdb_set_bad_password_time(sampass, 0, PDB_CHANGED);
1454 if (updated) {
1455 *updated = True;
1456 }
1457 }
1458
1459 return True;
1460 }
1461
1462 /*********************************************************************
1463 Increment the bad_password_count
1464 *********************************************************************/
1465
1466 bool pdb_increment_bad_password_count(struct samu *sampass)
1467 {
1468 uint32 account_policy_lockout;
1469 bool autolock_updated = False, badpw_updated = False;
1470 bool ret;
1471
1472 /* Retrieve the account lockout policy */
1473 become_root();
1474 ret = pdb_get_account_policy(AP_BAD_ATTEMPT_LOCKOUT, &account_policy_lockout);
1475 unbecome_root();
1476 if ( !ret ) {
1477 DEBUG(0, ("pdb_increment_bad_password_count: pdb_get_account_policy failed.\n"));
1478 return False;
1479 }
1480
1481 /* If there is no policy, we don't need to continue checking */
1482 if (!account_policy_lockout) {
1483 DEBUG(9, ("No lockout policy, don't track bad passwords\n"));
1484 return True;
1485 }
1486
1487 /* Check if the autolock needs to be cleared */
1488 if (!pdb_update_autolock_flag(sampass, &autolock_updated))
1489 return False;
1490
1491 /* Check if the badpw count needs to be reset */
1492 if (!pdb_update_bad_password_count(sampass, &badpw_updated))
1493 return False;
1494
1495 /*
1496 Ok, now we can assume that any resetting that needs to be
1497 done has been done, and just get on with incrementing
1498 and autolocking if necessary
1499 */
1500
1501 pdb_set_bad_password_count(sampass,
1502 pdb_get_bad_password_count(sampass)+1,
1503 PDB_CHANGED);
1504 pdb_set_bad_password_time(sampass, time(NULL), PDB_CHANGED);
1505
1506
1507 if (pdb_get_bad_password_count(sampass) < account_policy_lockout)
1508 return True;
1509
1510 if (!pdb_set_acct_ctrl(sampass,
1511 pdb_get_acct_ctrl(sampass) | ACB_AUTOLOCK,
1512 PDB_CHANGED)) {
1513 DEBUG(1, ("pdb_increment_bad_password_count:failed to set 'autolock' flag. \n"));
1514 return False;
1515 }
1516
1517 return True;
1518 }
1519
1520 bool is_trusted_domain_situation(const char *domain_name)
1521 {
1522 return IS_DC &&
1523 lp_allow_trusted_domains() &&
1524 !strequal(domain_name, lp_workgroup());
1525 }
1526
1527 /*******************************************************************
1528 Wrapper around retrieving the clear text trust account password.
1529 appropriate account name is stored in account_name.
1530 Caller must free password, but not account_name.
1531 *******************************************************************/
1532
1533 bool get_trust_pw_clear(const char *domain, char **ret_pwd,
1534 const char **account_name, uint32 *channel)
1535 {
1536 char *pwd;
1537 time_t last_set_time;
1538
1539 /* if we are a DC and this is not our domain, then lookup an account
1540 * for the domain trust */
1541
1542 if (is_trusted_domain_situation(domain)) {
1543 if (!pdb_get_trusteddom_pw(domain, ret_pwd, NULL,
1544 &last_set_time))
1545 {
1546 DEBUG(0, ("get_trust_pw: could not fetch trust "
1547 "account password for trusted domain %s\n",
1548 domain));
1549 return false;
1550 }
1551
1552 if (channel != NULL) {
1553 *channel = SEC_CHAN_DOMAIN;
1554 }
1555
1556 if (account_name != NULL) {
1557 *account_name = lp_workgroup();
1558 }
1559
1560 return true;
1561 }
1562
1563 /* Just get the account for the requested domain. In the future this
1564 * might also cover to be member of more than one domain. */
1565
1566 pwd = secrets_fetch_machine_password(domain, &last_set_time, channel);
1567
1568 if (pwd != NULL) {
1569 *ret_pwd = pwd;
1570 if (account_name != NULL) {
1571 *account_name = global_myname();
1572 }
1573
1574 return true;
1575 }
1576
1577 DEBUG(5, ("get_trust_pw_clear: could not fetch clear text trust "
1578 "account password for domain %s\n", domain));
1579 return false;
1580 }
1581
1582 /*******************************************************************
1583 Wrapper around retrieving the trust account password.
1584 appropriate account name is stored in account_name.
1585 *******************************************************************/
1586
1587 bool get_trust_pw_hash(const char *domain, uint8 ret_pwd[16],
1588 const char **account_name, uint32 *channel)
1589 {
1590 char *pwd = NULL;
1591 time_t last_set_time;
1592
1593 if (get_trust_pw_clear(domain, &pwd, account_name, channel)) {
1594 E_md4hash(pwd, ret_pwd);
1595 SAFE_FREE(pwd);
1596 return true;
1597 } else if (is_trusted_domain_situation(domain)) {
1598 return false;
1599 }
1600
1601 /* as a fallback, try to get the hashed pwd directly from the tdb... */
1602
1603 if (secrets_fetch_trust_account_password_legacy(domain, ret_pwd,
1604 &last_set_time,
1605 channel))
1606 {
1607 if (account_name != NULL) {
1608 *account_name = global_myname();
1609 }
1610
1611 return true;
1612 }
1613
1614 DEBUG(5, ("get_trust_pw_hash: could not fetch trust account "
1615 "password for domain %s\n", domain));
1616 return False;
1617 }
1618
1619 struct samr_LogonHours get_logon_hours_from_pdb(TALLOC_CTX *mem_ctx,
1620 struct samu *pw)
1621 {
1622 struct samr_LogonHours hours;
1623 const int units_per_week = 168;
1624
1625 ZERO_STRUCT(hours);
1626 hours.bits = talloc_array(mem_ctx, uint8_t, units_per_week);
1627 if (!hours.bits) {
1628 return hours;
1629 }
1630
1631 hours.units_per_week = units_per_week;
1632 memset(hours.bits, 0xFF, units_per_week);
1633
1634 if (pdb_get_hours(pw)) {
1635 memcpy(hours.bits, pdb_get_hours(pw),
1636 MIN(pdb_get_hours_len(pw), units_per_week));
1637 }
1638
1639 return hours;
1640 }
1641
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