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Found out a good number of NT_STATUS_IS_ERR used the wrong way.
[Samba/gebeck_regimport.git] / source3 / auth / auth_util.c
blob7d0f44f1d1f4e4eef39f8a3566e2413cb24b7bad
1 /*
2 Unix SMB/CIFS implementation.
3 Authentication utility functions
4 Copyright (C) Andrew Tridgell 1992-1998
5 Copyright (C) Andrew Bartlett 2001
6 Copyright (C) Jeremy Allison 2000-2001
7 Copyright (C) Rafal Szczesniak 2002
8
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 2 of the License, or
12 (at your option) any later version.
13
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
18
19 You should have received a copy of the GNU General Public License
20 along with this program; if not, write to the Free Software
21 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
22 */
23
24 #include "includes.h"
25
26 #undef DBGC_CLASS
27 #define DBGC_CLASS DBGC_AUTH
28
29 extern DOM_SID global_sid_World;
30 extern DOM_SID global_sid_Network;
31 extern DOM_SID global_sid_Builtin_Guests;
32 extern DOM_SID global_sid_Authenticated_Users;
33
34
35 /****************************************************************************
36 Create a UNIX user on demand.
37 ****************************************************************************/
38
39 static int smb_create_user(const char *domain, const char *unix_username, const char *homedir)
40 {
41 pstring add_script;
42 int ret;
43
44 pstrcpy(add_script, lp_adduser_script());
45 if (! *add_script)
46 return -1;
47 all_string_sub(add_script, "%u", unix_username, sizeof(pstring));
48 if (domain)
49 all_string_sub(add_script, "%D", domain, sizeof(pstring));
50 if (homedir)
51 all_string_sub(add_script, "%H", homedir, sizeof(pstring));
52 ret = smbrun(add_script,NULL);
53 DEBUG(3,("smb_create_user: Running the command `%s' gave %d\n",add_script,ret));
54 return ret;
55 }
56
57 /****************************************************************************
58 Add and Delete UNIX users on demand, based on NTSTATUS codes.
59 ****************************************************************************/
60
61 void auth_add_user_script(const char *domain, const char *username)
62 {
63 struct passwd *pwd=NULL;
64
65 /*
66 * User validated ok against Domain controller.
67 * If the admin wants us to try and create a UNIX
68 * user on the fly, do so.
69 */
70
71 if(lp_adduser_script() && !(pwd = Get_Pwnam(username))) {
72 smb_create_user(domain, username, NULL);
73 }
74 }
75
76 /****************************************************************************
77 Create a SAM_ACCOUNT - either by looking in the pdb, or by faking it up from
78 unix info.
79 ****************************************************************************/
80
81 NTSTATUS auth_get_sam_account(const char *user, SAM_ACCOUNT **account)
82 {
83 BOOL pdb_ret;
84 NTSTATUS nt_status;
85 if (!NT_STATUS_IS_OK(nt_status = pdb_init_sam(account))) {
86 return nt_status;
87 }
88
89 become_root();
90 pdb_ret = pdb_getsampwnam(*account, user);
91 unbecome_root();
92
93 if (!pdb_ret) {
94
95 struct passwd *pass = Get_Pwnam(user);
96 if (!pass)
97 return NT_STATUS_NO_SUCH_USER;
98
99 if (!NT_STATUS_IS_OK(nt_status = pdb_fill_sam_pw(*account, pass))) {
100 return nt_status;
101 }
102 }
103 return NT_STATUS_OK;
104 }
105
106 /****************************************************************************
107 Create an auth_usersupplied_data structure
108 ****************************************************************************/
109
110 static NTSTATUS make_user_info(auth_usersupplied_info **user_info,
111 const char *smb_name,
112 const char *internal_username,
113 const char *client_domain,
114 const char *domain,
115 const char *wksta_name,
116 DATA_BLOB lm_pwd, DATA_BLOB nt_pwd,
117 DATA_BLOB plaintext,
118 uint32 auth_flags, BOOL encrypted)
119 {
120
121 DEBUG(5,("attempting to make a user_info for %s (%s)\n", internal_username, smb_name));
122
123 *user_info = malloc(sizeof(**user_info));
124 if (!user_info) {
125 DEBUG(0,("malloc failed for user_info (size %d)\n", sizeof(*user_info)));
126 return NT_STATUS_NO_MEMORY;
127 }
128
129 ZERO_STRUCTP(*user_info);
130
131 DEBUG(5,("making strings for %s's user_info struct\n", internal_username));
132
133 (*user_info)->smb_name.str = strdup(smb_name);
134 if ((*user_info)->smb_name.str) {
135 (*user_info)->smb_name.len = strlen(smb_name);
136 } else {
137 free_user_info(user_info);
138 return NT_STATUS_NO_MEMORY;
139 }
140
141 (*user_info)->internal_username.str = strdup(internal_username);
142 if ((*user_info)->internal_username.str) {
143 (*user_info)->internal_username.len = strlen(internal_username);
144 } else {
145 free_user_info(user_info);
146 return NT_STATUS_NO_MEMORY;
147 }
148
149 (*user_info)->domain.str = strdup(domain);
150 if ((*user_info)->domain.str) {
151 (*user_info)->domain.len = strlen(domain);
152 } else {
153 free_user_info(user_info);
154 return NT_STATUS_NO_MEMORY;
155 }
156
157 (*user_info)->client_domain.str = strdup(client_domain);
158 if ((*user_info)->client_domain.str) {
159 (*user_info)->client_domain.len = strlen(client_domain);
160 } else {
161 free_user_info(user_info);
162 return NT_STATUS_NO_MEMORY;
163 }
164
165 (*user_info)->wksta_name.str = strdup(wksta_name);
166 if ((*user_info)->wksta_name.str) {
167 (*user_info)->wksta_name.len = strlen(wksta_name);
168 } else {
169 free_user_info(user_info);
170 return NT_STATUS_NO_MEMORY;
171 }
172
173 DEBUG(5,("making blobs for %s's user_info struct\n", internal_username));
174
175 (*user_info)->lm_resp = data_blob(lm_pwd.data, lm_pwd.length);
176 (*user_info)->nt_resp = data_blob(nt_pwd.data, nt_pwd.length);
177 (*user_info)->plaintext_password = data_blob(plaintext.data, plaintext.length);
178
179 (*user_info)->encrypted = encrypted;
180 (*user_info)->auth_flags = auth_flags;
181
182 DEBUG(10,("made an %sencrypted user_info for %s (%s)\n", encrypted ? "":"un" , internal_username, smb_name));
183
184 return NT_STATUS_OK;
185 }
186
187 /****************************************************************************
188 Create an auth_usersupplied_data structure after appropriate mapping.
189 ****************************************************************************/
190
191 NTSTATUS make_user_info_map(auth_usersupplied_info **user_info,
192 const char *smb_name,
193 const char *client_domain,
194 const char *wksta_name,
195 DATA_BLOB lm_pwd, DATA_BLOB nt_pwd,
196 DATA_BLOB plaintext,
197 uint32 ntlmssp_flags, BOOL encrypted)
198 {
199 const char *domain;
200 fstring internal_username;
201 fstrcpy(internal_username, smb_name);
202 map_username(internal_username);
203
204 DEBUG(5, ("make_user_info_map: Mapping user [%s]\\[%s] from workstation [%s]\n",
205 client_domain, smb_name, wksta_name));
206
207 if (lp_allow_trusted_domains() && *client_domain) {
208
209 /* the client could have given us a workstation name
210 or other crap for the workgroup - we really need a
211 way of telling if this domain name is one of our
212 trusted domain names
213
214 Also don't allow "" as a domain, fixes a Win9X bug
215 where it doens't supply a domain for logon script
216 'net use' commands.
217
218 Finally, we do this by looking up a cache of trusted domains!
219 */
220
221 domain = client_domain;
222
223 if (is_trusted_domain(domain)) {
224 return make_user_info(user_info, smb_name, internal_username,
225 client_domain, domain, wksta_name,
226 lm_pwd, nt_pwd, plaintext, ntlmssp_flags,
227 encrypted);
228 }
229
230 } else {
231 domain = lp_workgroup();
232 }
233
234 return make_user_info(user_info,
235 smb_name, internal_username,
236 client_domain, domain,
237 wksta_name,
238 lm_pwd, nt_pwd,
239 plaintext,
240 ntlmssp_flags, encrypted);
241
242 }
243
244 /****************************************************************************
245 Create an auth_usersupplied_data, making the DATA_BLOBs here.
246 Decrypt and encrypt the passwords.
247 ****************************************************************************/
248
249 BOOL make_user_info_netlogon_network(auth_usersupplied_info **user_info,
250 const char *smb_name,
251 const char *client_domain,
252 const char *wksta_name,
253 const uchar *lm_network_pwd, int lm_pwd_len,
254 const uchar *nt_network_pwd, int nt_pwd_len)
255 {
256 BOOL ret;
257 NTSTATUS nt_status;
258 DATA_BLOB lm_blob = data_blob(lm_network_pwd, lm_pwd_len);
259 DATA_BLOB nt_blob = data_blob(nt_network_pwd, nt_pwd_len);
260 DATA_BLOB plaintext_blob = data_blob(NULL, 0);
261 uint32 auth_flags = AUTH_FLAG_NONE;
262
263 if (lm_pwd_len)
264 auth_flags |= AUTH_FLAG_LM_RESP;
265 if (nt_pwd_len == 24) {
266 auth_flags |= AUTH_FLAG_NTLM_RESP;
267 } else if (nt_pwd_len != 0) {
268 auth_flags |= AUTH_FLAG_NTLMv2_RESP;
269 }
270
271 nt_status = make_user_info_map(user_info,
272 smb_name, client_domain,
273 wksta_name,
274 lm_blob, nt_blob,
275 plaintext_blob,
276 auth_flags, True);
277
278 ret = NT_STATUS_IS_OK(nt_status) ? True : False;
279
280 data_blob_free(&lm_blob);
281 data_blob_free(&nt_blob);
282 return ret;
283 }
284
285 /****************************************************************************
286 Create an auth_usersupplied_data, making the DATA_BLOBs here.
287 Decrypt and encrypt the passwords.
288 ****************************************************************************/
289
290 BOOL make_user_info_netlogon_interactive(auth_usersupplied_info **user_info,
291 const char *smb_name,
292 const char *client_domain,
293 const char *wksta_name,
294 const uchar chal[8],
295 const uchar lm_interactive_pwd[16],
296 const uchar nt_interactive_pwd[16],
297 const uchar *dc_sess_key)
298 {
299 char lm_pwd[16];
300 char nt_pwd[16];
301 unsigned char local_lm_response[24];
302 unsigned char local_nt_response[24];
303 unsigned char key[16];
304 uint32 auth_flags = AUTH_FLAG_NONE;
305
306 ZERO_STRUCT(key);
307 memcpy(key, dc_sess_key, 8);
308
309 if (lm_interactive_pwd) memcpy(lm_pwd, lm_interactive_pwd, sizeof(lm_pwd));
310 if (nt_interactive_pwd) memcpy(nt_pwd, nt_interactive_pwd, sizeof(nt_pwd));
311
312 #ifdef DEBUG_PASSWORD
313 DEBUG(100,("key:"));
314 dump_data(100, (char *)key, sizeof(key));
315
316 DEBUG(100,("lm owf password:"));
317 dump_data(100, lm_pwd, sizeof(lm_pwd));
318
319 DEBUG(100,("nt owf password:"));
320 dump_data(100, nt_pwd, sizeof(nt_pwd));
321 #endif
322
323 SamOEMhash((uchar *)lm_pwd, key, sizeof(lm_pwd));
324 SamOEMhash((uchar *)nt_pwd, key, sizeof(nt_pwd));
325
326 #ifdef DEBUG_PASSWORD
327 DEBUG(100,("decrypt of lm owf password:"));
328 dump_data(100, lm_pwd, sizeof(lm_pwd));
329
330 DEBUG(100,("decrypt of nt owf password:"));
331 dump_data(100, nt_pwd, sizeof(nt_pwd));
332 #endif
333
334 SMBOWFencrypt((const unsigned char *)lm_pwd, chal, local_lm_response);
335 SMBOWFencrypt((const unsigned char *)nt_pwd, chal, local_nt_response);
336
337 /* Password info paranoia */
338 ZERO_STRUCT(lm_pwd);
339 ZERO_STRUCT(nt_pwd);
340 ZERO_STRUCT(key);
341
342 {
343 BOOL ret;
344 NTSTATUS nt_status;
345 DATA_BLOB local_lm_blob = data_blob(local_lm_response, sizeof(local_lm_response));
346 DATA_BLOB local_nt_blob = data_blob(local_nt_response, sizeof(local_nt_response));
347 DATA_BLOB plaintext_blob = data_blob(NULL, 0);
348
349 if (lm_interactive_pwd)
350 auth_flags |= AUTH_FLAG_LM_RESP;
351 if (nt_interactive_pwd)
352 auth_flags |= AUTH_FLAG_NTLM_RESP;
353
354 nt_status = make_user_info_map(user_info,
355 smb_name, client_domain,
356 wksta_name,
357 local_lm_blob,
358 local_nt_blob,
359 plaintext_blob,
360 auth_flags, True);
361
362 ret = NT_STATUS_IS_OK(nt_status) ? True : False;
363 data_blob_free(&local_lm_blob);
364 data_blob_free(&local_nt_blob);
365 return ret;
366 }
367 }
368
369
370 /****************************************************************************
371 Create an auth_usersupplied_data structure
372 ****************************************************************************/
373
374 BOOL make_user_info_for_reply(auth_usersupplied_info **user_info,
375 const char *smb_name,
376 const char *client_domain,
377 const uint8 chal[8],
378 DATA_BLOB plaintext_password)
379 {
380
381 DATA_BLOB local_lm_blob;
382 DATA_BLOB local_nt_blob;
383 NTSTATUS ret = NT_STATUS_UNSUCCESSFUL;
384 uint32 auth_flags = AUTH_FLAG_NONE;
385
386 /*
387 * Not encrypted - do so.
388 */
389
390 DEBUG(5,("make_user_info_for_reply: User passwords not in encrypted format.\n"));
391
392 if (plaintext_password.data) {
393 unsigned char local_lm_response[24];
394
395 #ifdef DEBUG_PASSWORD
396 DEBUG(10,("Unencrypted password (len %d):\n",plaintext_password.length));
397 dump_data(100, plaintext_password.data, plaintext_password.length);
398 #endif
399
400 SMBencrypt( (const uchar *)plaintext_password.data, (const uchar*)chal, local_lm_response);
401 local_lm_blob = data_blob(local_lm_response, 24);
402
403 /* We can't do an NT hash here, as the password needs to be
404 case insensitive */
405 local_nt_blob = data_blob(NULL, 0);
406
407 auth_flags = (AUTH_FLAG_PLAINTEXT | AUTH_FLAG_LM_RESP);
408 } else {
409 local_lm_blob = data_blob(NULL, 0);
410 local_nt_blob = data_blob(NULL, 0);
411 }
412
413 ret = make_user_info_map(user_info, smb_name,
414 client_domain,
415 get_remote_machine_name(),
416 local_lm_blob,
417 local_nt_blob,
418 plaintext_password,
419 auth_flags, False);
420
421 data_blob_free(&local_lm_blob);
422 return NT_STATUS_IS_OK(ret) ? True : False;
423 }
424
425 /****************************************************************************
426 Create an auth_usersupplied_data structure
427 ****************************************************************************/
428
429 NTSTATUS make_user_info_for_reply_enc(auth_usersupplied_info **user_info,
430 const char *smb_name,
431 const char *client_domain,
432 DATA_BLOB lm_resp, DATA_BLOB nt_resp)
433 {
434 uint32 auth_flags = AUTH_FLAG_NONE;
435
436 DATA_BLOB no_plaintext_blob = data_blob(NULL, 0);
437
438 if (lm_resp.length == 24) {
439 auth_flags |= AUTH_FLAG_LM_RESP;
440 }
441 if (nt_resp.length == 0) {
442 } else if (nt_resp.length == 24) {
443 auth_flags |= AUTH_FLAG_NTLM_RESP;
444 } else {
445 auth_flags |= AUTH_FLAG_NTLMv2_RESP;
446 }
447
448 return make_user_info_map(user_info, smb_name,
449 client_domain,
450 get_remote_machine_name(),
451 lm_resp,
452 nt_resp,
453 no_plaintext_blob,
454 auth_flags, True);
455 }
456
457 /****************************************************************************
458 Create a guest user_info blob, for anonymous authenticaion.
459 ****************************************************************************/
460
461 BOOL make_user_info_guest(auth_usersupplied_info **user_info)
462 {
463 DATA_BLOB lm_blob = data_blob(NULL, 0);
464 DATA_BLOB nt_blob = data_blob(NULL, 0);
465 DATA_BLOB plaintext_blob = data_blob(NULL, 0);
466 uint32 auth_flags = AUTH_FLAG_NONE;
467 NTSTATUS nt_status;
468
469 nt_status = make_user_info(user_info,
470 "","",
471 "","",
472 "",
473 nt_blob, lm_blob,
474 plaintext_blob,
475 auth_flags, True);
476
477 return NT_STATUS_IS_OK(nt_status) ? True : False;
478 }
479
480 /****************************************************************************
481 prints a NT_USER_TOKEN to debug output.
482 ****************************************************************************/
483
484 void debug_nt_user_token(int dbg_class, int dbg_lev, NT_USER_TOKEN *token)
485 {
486 fstring sid_str;
487 size_t i;
488
489 if (!token) {
490 DEBUGC(dbg_class, dbg_lev, ("NT user token: (NULL)\n"));
491 return;
492 }
493
494 DEBUGC(dbg_class, dbg_lev, ("NT user token of user %s\n",
495 sid_to_string(sid_str, &token->user_sids[0]) ));
496 DEBUGADDC(dbg_class, dbg_lev, ("contains %i SIDs\n", token->num_sids));
497 for (i = 0; i < token->num_sids; i++)
498 DEBUGADDC(dbg_class, dbg_lev, ("SID[%3i]: %s\n", i,
499 sid_to_string(sid_str, &token->user_sids[i])));
500 }
501
502 /****************************************************************************
503 prints a UNIX 'token' to debug output.
504 ****************************************************************************/
505
506 void debug_unix_user_token(int dbg_class, int dbg_lev, uid_t uid, gid_t gid, int n_groups, gid_t *groups)
507 {
508 int i;
509 DEBUGC(dbg_class, dbg_lev, ("UNIX token of user %ld\n", (long int)uid));
510
511 DEBUGADDC(dbg_class, dbg_lev, ("Primary group is %ld and contains %i supplementary groups\n", (long int)gid, n_groups));
512 for (i = 0; i < n_groups; i++)
513 DEBUGADDC(dbg_class, dbg_lev, ("Group[%3i]: %ld\n", i,
514 (long int)groups[i]));
515 }
516
517 /****************************************************************************
518 Create the SID list for this user.
519 ****************************************************************************/
520
521 static NTSTATUS create_nt_user_token(const DOM_SID *user_sid, const DOM_SID *group_sid,
522 int n_groupSIDs, DOM_SID *groupSIDs,
523 BOOL is_guest, NT_USER_TOKEN **token)
524 {
525 NTSTATUS nt_status = NT_STATUS_OK;
526 NT_USER_TOKEN *ptoken;
527 int i;
528 int sid_ndx;
529
530 if ((ptoken = malloc( sizeof(NT_USER_TOKEN) ) ) == NULL) {
531 DEBUG(0, ("create_nt_token: Out of memory allocating token\n"));
532 nt_status = NT_STATUS_NO_MEMORY;
533 return nt_status;
534 }
535
536 ZERO_STRUCTP(ptoken);
537
538 ptoken->num_sids = n_groupSIDs + 5;
539
540 if ((ptoken->user_sids = (DOM_SID *)malloc( sizeof(DOM_SID) * ptoken->num_sids )) == NULL) {
541 DEBUG(0, ("create_nt_token: Out of memory allocating SIDs\n"));
542 nt_status = NT_STATUS_NO_MEMORY;
543 return nt_status;
544 }
545
546 memset((char*)ptoken->user_sids,0,sizeof(DOM_SID) * ptoken->num_sids);
547
548 /*
549 * Note - user SID *MUST* be first in token !
550 * se_access_check depends on this.
551 *
552 * Primary group SID is second in token. Convention.
553 */
554
555 sid_copy(&ptoken->user_sids[PRIMARY_USER_SID_INDEX], user_sid);
556 if (group_sid)
557 sid_copy(&ptoken->user_sids[PRIMARY_GROUP_SID_INDEX], group_sid);
558
559 /*
560 * Finally add the "standard" SIDs.
561 * The only difference between guest and "anonymous" (which we
562 * don't really support) is the addition of Authenticated_Users.
563 */
564
565 sid_copy(&ptoken->user_sids[2], &global_sid_World);
566 sid_copy(&ptoken->user_sids[3], &global_sid_Network);
567
568 if (is_guest)
569 sid_copy(&ptoken->user_sids[4], &global_sid_Builtin_Guests);
570 else
571 sid_copy(&ptoken->user_sids[4], &global_sid_Authenticated_Users);
572
573 sid_ndx = 5; /* next available spot */
574
575 for (i = 0; i < n_groupSIDs; i++) {
576 size_t check_sid_idx;
577 for (check_sid_idx = 1; check_sid_idx < ptoken->num_sids; check_sid_idx++) {
578 if (sid_equal(&ptoken->user_sids[check_sid_idx],
579 &groupSIDs[i])) {
580 break;
581 }
582 }
583
584 if (check_sid_idx >= ptoken->num_sids) /* Not found already */ {
585 sid_copy(&ptoken->user_sids[sid_ndx++], &groupSIDs[i]);
586 } else {
587 ptoken->num_sids--;
588 }
589 }
590
591 debug_nt_user_token(DBGC_AUTH, 10, ptoken);
592
593 *token = ptoken;
594
595 return nt_status;
596 }
597
598 /****************************************************************************
599 Create the SID list for this user.
600 ****************************************************************************/
601
602 NT_USER_TOKEN *create_nt_token(uid_t uid, gid_t gid, int ngroups, gid_t *groups, BOOL is_guest)
603 {
604 DOM_SID user_sid;
605 DOM_SID group_sid;
606 DOM_SID *group_sids;
607 NT_USER_TOKEN *token;
608 int i;
609
610 if (!NT_STATUS_IS_OK(uid_to_sid(&user_sid, uid))) {
611 return NULL;
612 }
613 if (!NT_STATUS_IS_OK(gid_to_sid(&group_sid, gid))) {
614 return NULL;
615 }
616
617 group_sids = malloc(sizeof(DOM_SID) * ngroups);
618 if (!group_sids) {
619 DEBUG(0, ("create_nt_token: malloc() failed for DOM_SID list!\n"));
620 return NULL;
621 }
622
623 for (i = 0; i < ngroups; i++) {
624 if (!NT_STATUS_IS_OK(gid_to_sid(&(group_sids)[i], (groups)[i]))) {
625 DEBUG(1, ("create_nt_token: failed to convert gid %ld to a sid!\n", (long int)groups[i]));
626 SAFE_FREE(group_sids);
627 return NULL;
628 }
629 }
630
631 if (!NT_STATUS_IS_OK(create_nt_user_token(&user_sid, &group_sid,
632 ngroups, group_sids, is_guest, &token))) {
633 SAFE_FREE(group_sids);
634 return NULL;
635 }
636
637 SAFE_FREE(group_sids);
638
639 return token;
640 }
641
642 /******************************************************************************
643 * this function returns the groups (SIDs) of the local SAM the user is in.
644 * If this samba server is a DC of the domain the user belongs to, it returns
645 * both domain groups and local / builtin groups. If the user is in a trusted
646 * domain, or samba is a member server of a domain, then this function returns
647 * local and builtin groups the user is a member of.
648 *
649 * currently this is a hack, as there is no sam implementation that is capable
650 * of groups.
651 ******************************************************************************/
652
653 static NTSTATUS get_user_groups_from_local_sam(const char *username, uid_t uid, gid_t gid,
654 int *n_groups, DOM_SID **groups, gid_t **unix_groups)
655 {
656 int n_unix_groups;
657 int i;
658
659 *n_groups = 0;
660 *groups = NULL;
661
662 n_unix_groups = groups_max();
663 if ((*unix_groups = malloc( sizeof(gid_t) * n_unix_groups ) ) == NULL) {
664 DEBUG(0, ("get_user_groups_from_local_sam: Out of memory allocating unix group list\n"));
665 return NT_STATUS_NO_MEMORY;
666 }
667
668 if (sys_getgrouplist(username, gid, *unix_groups, &n_unix_groups) == -1) {
669 gid_t *groups_tmp;
670 groups_tmp = Realloc(*unix_groups, sizeof(gid_t) * n_unix_groups);
671 if (!groups_tmp) {
672 SAFE_FREE(*unix_groups);
673 return NT_STATUS_NO_MEMORY;
674 }
675 *unix_groups = groups_tmp;
676
677 if (sys_getgrouplist(username, gid, *unix_groups, &n_unix_groups) == -1) {
678 DEBUG(0, ("get_user_groups_from_local_sam: failed to get the unix group list\n"));
679 SAFE_FREE(*unix_groups);
680 return NT_STATUS_NO_SUCH_USER; /* what should this return value be? */
681 }
682 }
683
684 debug_unix_user_token(DBGC_CLASS, 5, uid, gid, n_unix_groups, *unix_groups);
685
686 if (n_unix_groups > 0) {
687 *groups = malloc(sizeof(DOM_SID) * n_unix_groups);
688 if (!*groups) {
689 DEBUG(0, ("get_user_group_from_local_sam: malloc() failed for DOM_SID list!\n"));
690 SAFE_FREE(*unix_groups);
691 return NT_STATUS_NO_MEMORY;
692 }
693 }
694
695 *n_groups = n_unix_groups;
696
697 for (i = 0; i < *n_groups; i++) {
698 if (!NT_STATUS_IS_OK(gid_to_sid(&(*groups)[i], (*unix_groups)[i]))) {
699 DEBUG(1, ("get_user_groups_from_local_sam: failed to convert gid %ld to a sid!\n", (long int)(*unix_groups)[i+1]));
700 SAFE_FREE(*groups);
701 SAFE_FREE(*unix_groups);
702 return NT_STATUS_NO_SUCH_USER;
703 }
704 }
705
706 return NT_STATUS_OK;
707 }
708
709 /***************************************************************************
710 Make a user_info struct
711 ***************************************************************************/
712
713 static NTSTATUS make_server_info(auth_serversupplied_info **server_info)
714 {
715 *server_info = malloc(sizeof(**server_info));
716 if (!*server_info) {
717 DEBUG(0,("make_server_info: malloc failed!\n"));
718 return NT_STATUS_NO_MEMORY;
719 }
720 ZERO_STRUCTP(*server_info);
721 return NT_STATUS_OK;
722 }
723
724 /***************************************************************************
725 Fill a server_info struct from a SAM_ACCOUNT with their groups
726 ***************************************************************************/
727
728 static NTSTATUS add_user_groups(auth_serversupplied_info **server_info,
729 SAM_ACCOUNT *sampass,
730 uid_t uid, gid_t gid)
731 {
732 NTSTATUS nt_status;
733 const DOM_SID *user_sid = pdb_get_user_sid(sampass);
734 const DOM_SID *group_sid = pdb_get_group_sid(sampass);
735 int n_groupSIDs = 0;
736 DOM_SID *groupSIDs = NULL;
737 gid_t *unix_groups = NULL;
738 NT_USER_TOKEN *token;
739 BOOL is_guest;
740 uint32 rid;
741
742 nt_status = get_user_groups_from_local_sam(pdb_get_username(sampass),
743 uid, gid,
744 &n_groupSIDs, &groupSIDs,
745 &unix_groups);
746 if (!NT_STATUS_IS_OK(nt_status)) {
747 DEBUG(4,("get_user_groups_from_local_sam failed\n"));
748 free_server_info(server_info);
749 return nt_status;
750 }
751
752 is_guest = (sid_peek_rid(user_sid, &rid) && rid == DOMAIN_USER_RID_GUEST);
753
754 if (!NT_STATUS_IS_OK(nt_status = create_nt_user_token(user_sid, group_sid,
755 n_groupSIDs, groupSIDs, is_guest,
756 &token)))
757 {
758 DEBUG(4,("create_nt_user_token failed\n"));
759 SAFE_FREE(groupSIDs);
760 SAFE_FREE(unix_groups);
761 free_server_info(server_info);
762 return nt_status;
763 }
764
765 SAFE_FREE(groupSIDs);
766
767 (*server_info)->n_groups = n_groupSIDs;
768 (*server_info)->groups = unix_groups;
769 (*server_info)->ptok = token;
770
771 return nt_status;
772 }
773
774 /***************************************************************************
775 Make (and fill) a user_info struct from a SAM_ACCOUNT
776 ***************************************************************************/
777
778 NTSTATUS make_server_info_sam(auth_serversupplied_info **server_info,
779 SAM_ACCOUNT *sampass)
780 {
781 NTSTATUS nt_status;
782
783 if (!NT_STATUS_IS_OK(nt_status = make_server_info(server_info)))
784 return nt_status;
785
786 (*server_info)->sam_account = sampass;
787
788 if (!NT_STATUS_IS_OK(nt_status = sid_to_uid(pdb_get_user_sid(sampass), &((*server_info)->uid))))
789 return nt_status;
790
791 if (!NT_STATUS_IS_OK(nt_status = sid_to_gid(pdb_get_group_sid(sampass), &((*server_info)->gid))))
792 return nt_status;
793
794 if (!NT_STATUS_IS_OK(nt_status = add_user_groups(server_info, sampass,
795 (*server_info)->uid, (*server_info)->gid)))
796 return nt_status;
797
798 (*server_info)->sam_fill_level = SAM_FILL_ALL;
799 DEBUG(5,("make_server_info_sam: made server info for user %s\n",
800 pdb_get_username((*server_info)->sam_account)));
801
802 return nt_status;
803 }
804
805 /***************************************************************************
806 Make (and fill) a user_info struct from a 'struct passwd' by conversion
807 to a SAM_ACCOUNT
808 ***************************************************************************/
809
810 NTSTATUS make_server_info_pw(auth_serversupplied_info **server_info, const struct passwd *pwd)
811 {
812 NTSTATUS nt_status;
813 SAM_ACCOUNT *sampass = NULL;
814 if (!NT_STATUS_IS_OK(nt_status = pdb_init_sam_pw(&sampass, pwd))) {
815 return nt_status;
816 }
817 if (!NT_STATUS_IS_OK(nt_status = make_server_info(server_info))) {
818 return nt_status;
819 }
820
821 (*server_info)->sam_account = sampass;
822
823 if (!NT_STATUS_IS_OK(nt_status = add_user_groups(server_info, sampass, pwd->pw_uid, pwd->pw_gid))) {
824 return nt_status;
825 }
826
827 (*server_info)->sam_fill_level = SAM_FILL_ALL;
828 (*server_info)->uid = pwd->pw_uid;
829 (*server_info)->gid = pwd->pw_gid;
830 return nt_status;
831 }
832
833 /***************************************************************************
834 Make (and fill) a user_info struct for a guest login.
835 ***************************************************************************/
836
837 NTSTATUS make_server_info_guest(auth_serversupplied_info **server_info)
838 {
839 NTSTATUS nt_status;
840 SAM_ACCOUNT *sampass = NULL;
841 DOM_SID guest_sid;
842
843 if (!NT_STATUS_IS_OK(nt_status = pdb_init_sam(&sampass))) {
844 return nt_status;
845 }
846
847 sid_copy(&guest_sid, get_global_sam_sid());
848 sid_append_rid(&guest_sid, DOMAIN_USER_RID_GUEST);
849
850 become_root();
851 if (!pdb_getsampwsid(sampass, &guest_sid)) {
852 unbecome_root();
853 return NT_STATUS_NO_SUCH_USER;
854 }
855 unbecome_root();
856
857 nt_status = make_server_info_sam(server_info, sampass);
858
859 if (NT_STATUS_IS_OK(nt_status)) {
860 (*server_info)->guest = True;
861 }
862
863 return nt_status;
864 }
865
866 /***************************************************************************
867 Purely internal function for make_server_info_info3
868 Fill the sam account from getpwnam
869 ***************************************************************************/
870 static NTSTATUS fill_sam_account(const char *domain,
871 const char *username,
872 uid_t *uid, gid_t *gid,
873 SAM_ACCOUNT **sam_account)
874 {
875 fstring dom_user;
876 struct passwd *passwd;
877
878 fstr_sprintf(dom_user, "%s%s%s",
879 domain, lp_winbind_separator(), username);
880
881 passwd = Get_Pwnam(dom_user);
882
883 if ( (passwd == NULL) && is_myworkgroup(domain) ) {
884 /* For our own domain also try unqualified */
885 passwd = Get_Pwnam(username);
886 }
887
888 if (passwd == NULL)
889 return NT_STATUS_NO_SUCH_USER;
890
891 *uid = passwd->pw_uid;
892 *gid = passwd->pw_gid;
893
894 return pdb_init_sam_pw(sam_account, passwd);
895 }
896
897 /***************************************************************************
898 Make a server_info struct from the info3 returned by a domain logon
899 ***************************************************************************/
900
901 NTSTATUS make_server_info_info3(TALLOC_CTX *mem_ctx,
902 const char *internal_username,
903 const char *sent_nt_username,
904 const char *domain,
905 auth_serversupplied_info **server_info,
906 NET_USER_INFO_3 *info3)
907 {
908 NTSTATUS nt_status = NT_STATUS_OK;
909
910 const char *nt_domain;
911 const char *nt_username;
912
913 SAM_ACCOUNT *sam_account = NULL;
914 DOM_SID user_sid;
915 DOM_SID group_sid;
916
917 struct passwd *passwd;
918
919 unid_t u_id, g_id;
920 uid_t uid;
921 gid_t gid;
922 int u_type, g_type;
923
924 int n_lgroupSIDs;
925 DOM_SID *lgroupSIDs = NULL;
926
927 gid_t *unix_groups = NULL;
928 NT_USER_TOKEN *token;
929
930 DOM_SID *all_group_SIDs;
931 size_t i;
932
933 /*
934 Here is where we should check the list of
935 trusted domains, and verify that the SID
936 matches.
937 */
938
939 sid_copy(&user_sid, &info3->dom_sid.sid);
940 if (!sid_append_rid(&user_sid, info3->user_rid)) {
941 return NT_STATUS_INVALID_PARAMETER;
942 }
943
944 sid_copy(&group_sid, &info3->dom_sid.sid);
945 if (!sid_append_rid(&group_sid, info3->group_rid)) {
946 return NT_STATUS_INVALID_PARAMETER;
947 }
948
949 if (!(nt_username = unistr2_tdup(mem_ctx, &(info3->uni_user_name)))) {
950 /* If the server didn't give us one, just use the one we sent them */
951 nt_username = sent_nt_username;
952 }
953
954 if (!(nt_domain = unistr2_tdup(mem_ctx, &(info3->uni_logon_dom)))) {
955 /* If the server didn't give us one, just use the one we sent them */
956 domain = domain;
957 }
958
959 u_type = ID_USERID;
960 g_type = ID_GROUPID;
961
962 /* we are trying to check that idmap isn't stuffing us over - does this
963 user actually exist? */
964 if (NT_STATUS_IS_OK(idmap_get_id_from_sid(&u_id, &u_type, &user_sid))
965 && NT_STATUS_IS_OK(idmap_get_id_from_sid(&g_id, &g_type, &group_sid))
966 && ((passwd = getpwuid_alloc(u_id.uid)))) {
967
968 nt_status = pdb_init_sam_pw(&sam_account, passwd);
969
970 uid = passwd->pw_uid;
971 gid = passwd->pw_gid;
972
973 /* we should check this is the same name */
974
975 passwd_free(&passwd);
976 } else {
977
978 /* User not from winbind - try and find them by getpwnam() */
979 nt_status = fill_sam_account(nt_domain,
980 internal_username,
981 &uid, &gid,
982 &sam_account);
983
984 if (NT_STATUS_EQUAL(nt_status, NT_STATUS_NO_SUCH_USER)) {
985 DEBUG(3,("User %s does not exist, trying to add it\n",
986 internal_username));
987 auth_add_user_script(nt_domain, internal_username);
988 nt_status = fill_sam_account(nt_domain,
989 internal_username,
990 &uid, &gid,
991 &sam_account);
992 }
993 }
994
995 if (!NT_STATUS_IS_OK(nt_status)) {
996 DEBUG(0, ("make_server_info_info3: pdb_init_sam failed!\n"));
997 return nt_status;
998 }
999
1000 if (!pdb_set_user_sid(sam_account, &user_sid, PDB_CHANGED)) {
1001 pdb_free_sam(&sam_account);
1002 return NT_STATUS_UNSUCCESSFUL;
1003 }
1004
1005 if (!pdb_set_group_sid(sam_account, &group_sid, PDB_CHANGED)) {
1006 pdb_free_sam(&sam_account);
1007 return NT_STATUS_UNSUCCESSFUL;
1008 }
1009
1010 if (!pdb_set_nt_username(sam_account, nt_username, PDB_CHANGED)) {
1011 pdb_free_sam(&sam_account);
1012 return NT_STATUS_NO_MEMORY;
1013 }
1014
1015 if (!pdb_set_domain(sam_account, nt_domain, PDB_CHANGED)) {
1016 pdb_free_sam(&sam_account);
1017 return NT_STATUS_NO_MEMORY;
1018 }
1019
1020 if (!pdb_set_fullname(sam_account, unistr2_static(&(info3->uni_full_name)), PDB_CHANGED)) {
1021 pdb_free_sam(&sam_account);
1022 return NT_STATUS_NO_MEMORY;
1023 }
1024
1025 if (!pdb_set_logon_script(sam_account, unistr2_static(&(info3->uni_logon_script)), PDB_CHANGED)) {
1026 pdb_free_sam(&sam_account);
1027 return NT_STATUS_NO_MEMORY;
1028 }
1029
1030 if (!pdb_set_profile_path(sam_account, unistr2_static(&(info3->uni_profile_path)), PDB_CHANGED)) {
1031 pdb_free_sam(&sam_account);
1032 return NT_STATUS_NO_MEMORY;
1033 }
1034
1035 if (!pdb_set_homedir(sam_account, unistr2_static(&(info3->uni_home_dir)), PDB_CHANGED)) {
1036 pdb_free_sam(&sam_account);
1037 return NT_STATUS_NO_MEMORY;
1038 }
1039
1040 if (!pdb_set_dir_drive(sam_account, unistr2_static(&(info3->uni_dir_drive)), PDB_CHANGED)) {
1041 pdb_free_sam(&sam_account);
1042 return NT_STATUS_NO_MEMORY;
1043 }
1044
1045 /* now that we have a SAM_ACCOUNT that looks real, make a server_info
1046 to wrap it in, and use pass it on down */
1047
1048 if (!NT_STATUS_IS_OK(nt_status = make_server_info(server_info))) {
1049 DEBUG(4, ("make_server_info failed!\n"));
1050 pdb_free_sam(&sam_account);
1051 return nt_status;
1052 }
1053
1054 /* Fill in the unix info we found on the way */
1055
1056 (*server_info)->sam_fill_level = SAM_FILL_ALL;
1057 (*server_info)->uid = uid;
1058 (*server_info)->gid = gid;
1059
1060 /* Store the user group information in the server_info
1061 returned to the caller. */
1062
1063 if (!NT_STATUS_IS_OK(nt_status
1064 = get_user_groups_from_local_sam(pdb_get_username(sam_account),
1065 uid, gid,
1066 &n_lgroupSIDs,
1067 &lgroupSIDs,
1068 &unix_groups)))
1069 {
1070 DEBUG(4,("get_user_groups_from_local_sam failed\n"));
1071 return nt_status;
1072 }
1073
1074 (*server_info)->groups = unix_groups;
1075 (*server_info)->n_groups = n_lgroupSIDs;
1076
1077 /* Create a 'combined' list of all SIDs we might want in the SD */
1078 all_group_SIDs = malloc(sizeof(DOM_SID) *
1079 (n_lgroupSIDs + info3->num_groups2 +
1080 info3->num_other_sids));
1081 if (!all_group_SIDs) {
1082 DEBUG(0, ("malloc() failed for DOM_SID list!\n"));
1083 SAFE_FREE(lgroupSIDs);
1084 return NT_STATUS_NO_MEMORY;
1085 }
1086
1087 /* Copy the 'local' sids */
1088 memcpy(all_group_SIDs, lgroupSIDs, sizeof(DOM_SID) * n_lgroupSIDs);
1089 SAFE_FREE(lgroupSIDs);
1090
1091 /* and create (by appending rids) the 'domain' sids */
1092 for (i = 0; i < info3->num_groups2; i++) {
1093 sid_copy(&all_group_SIDs[i+n_lgroupSIDs], &(info3->dom_sid.sid));
1094 if (!sid_append_rid(&all_group_SIDs[i+n_lgroupSIDs], info3->gids[i].g_rid)) {
1095 nt_status = NT_STATUS_INVALID_PARAMETER;
1096 DEBUG(3,("could not append additional group rid 0x%x\n",
1097 info3->gids[i].g_rid));
1098 SAFE_FREE(lgroupSIDs);
1099 return nt_status;
1100 }
1101 }
1102
1103 /* Copy 'other' sids. We need to do sid filtering here to
1104 prevent possible elevation of privileges. See:
1105
1106 http://www.microsoft.com/windows2000/techinfo/administration/security/sidfilter.asp
1107 */
1108
1109 for (i = 0; i < info3->num_other_sids; i++)
1110 sid_copy(&all_group_SIDs[
1111 n_lgroupSIDs + info3->num_groups2 + i],
1112 &info3->other_sids[i].sid);
1113
1114 /* Where are the 'global' sids... */
1115
1116 /* can the user be guest? if yes, where is it stored? */
1117 if (!NT_STATUS_IS_OK(
1118 nt_status = create_nt_user_token(
1119 &user_sid, &group_sid,
1120 n_lgroupSIDs + info3->num_groups2 + info3->num_other_sids,
1121 all_group_SIDs, False, &token))) {
1122 DEBUG(4,("create_nt_user_token failed\n"));
1123 SAFE_FREE(all_group_SIDs);
1124 return nt_status;
1125 }
1126
1127 (*server_info)->ptok = token;
1128
1129 SAFE_FREE(all_group_SIDs);
1130
1131 memcpy((*server_info)->session_key, info3->user_sess_key, sizeof((*server_info)->session_key)/* 16 */);
1132 memcpy((*server_info)->first_8_lm_hash, info3->padding, 8);
1133
1134 return NT_STATUS_OK;
1135 }
1136
1137 /***************************************************************************
1138 Free a user_info struct
1139 ***************************************************************************/
1140
1141 void free_user_info(auth_usersupplied_info **user_info)
1142 {
1143 DEBUG(5,("attempting to free (and zero) a user_info structure\n"));
1144 if (*user_info != NULL) {
1145 if ((*user_info)->smb_name.str) {
1146 DEBUG(10,("structure was created for %s\n", (*user_info)->smb_name.str));
1147 }
1148 SAFE_FREE((*user_info)->smb_name.str);
1149 SAFE_FREE((*user_info)->internal_username.str);
1150 SAFE_FREE((*user_info)->client_domain.str);
1151 SAFE_FREE((*user_info)->domain.str);
1152 SAFE_FREE((*user_info)->wksta_name.str);
1153 data_blob_free(&(*user_info)->lm_resp);
1154 data_blob_free(&(*user_info)->nt_resp);
1155 SAFE_FREE((*user_info)->interactive_password);
1156 data_blob_clear_free(&(*user_info)->plaintext_password);
1157 ZERO_STRUCT(**user_info);
1158 }
1159 SAFE_FREE(*user_info);
1160 }
1161
1162 /***************************************************************************
1163 Clear out a server_info struct that has been allocated
1164 ***************************************************************************/
1165
1166 void free_server_info(auth_serversupplied_info **server_info)
1167 {
1168 DEBUG(5,("attempting to free (and zero) a server_info structure\n"));
1169 if (*server_info != NULL) {
1170 pdb_free_sam(&(*server_info)->sam_account);
1171
1172 /* call pam_end here, unless we know we are keeping it */
1173 delete_nt_token( &(*server_info)->ptok );
1174 SAFE_FREE((*server_info)->groups);
1175 ZERO_STRUCT(**server_info);
1176 }
1177 SAFE_FREE(*server_info);
1178 }
1179
1180 /***************************************************************************
1181 Make an auth_methods struct
1182 ***************************************************************************/
1183
1184 BOOL make_auth_methods(struct auth_context *auth_context, auth_methods **auth_method)
1185 {
1186 if (!auth_context) {
1187 smb_panic("no auth_context supplied to make_auth_methods()!\n");
1188 }
1189
1190 if (!auth_method) {
1191 smb_panic("make_auth_methods: pointer to auth_method pointer is NULL!\n");
1192 }
1193
1194 *auth_method = talloc(auth_context->mem_ctx, sizeof(**auth_method));
1195 if (!*auth_method) {
1196 DEBUG(0,("make_auth_method: malloc failed!\n"));
1197 return False;
1198 }
1199 ZERO_STRUCTP(*auth_method);
1200
1201 return True;
1202 }
1203
1204 /****************************************************************************
1205 Delete a SID token.
1206 ****************************************************************************/
1207
1208 void delete_nt_token(NT_USER_TOKEN **pptoken)
1209 {
1210 if (*pptoken) {
1211 NT_USER_TOKEN *ptoken = *pptoken;
1212 SAFE_FREE( ptoken->user_sids );
1213 ZERO_STRUCTP(ptoken);
1214 }
1215 SAFE_FREE(*pptoken);
1216 }
1217
1218 /****************************************************************************
1219 Duplicate a SID token.
1220 ****************************************************************************/
1221
1222 NT_USER_TOKEN *dup_nt_token(NT_USER_TOKEN *ptoken)
1223 {
1224 NT_USER_TOKEN *token;
1225
1226 if (!ptoken)
1227 return NULL;
1228
1229 if ((token = (NT_USER_TOKEN *)malloc( sizeof(NT_USER_TOKEN) ) ) == NULL)
1230 return NULL;
1231
1232 ZERO_STRUCTP(token);
1233
1234 if ((token->user_sids = (DOM_SID *)memdup( ptoken->user_sids, sizeof(DOM_SID) * ptoken->num_sids )) == NULL) {
1235 SAFE_FREE(token);
1236 return NULL;
1237 }
1238
1239 token->num_sids = ptoken->num_sids;
1240
1241 return token;
1242 }
1243
1244 /**
1245 * Squash an NT_STATUS in line with security requirements.
1246 * In an attempt to avoid giving the whole game away when users
1247 * are authenticating, NT replaces both NT_STATUS_NO_SUCH_USER and
1248 * NT_STATUS_WRONG_PASSWORD with NT_STATUS_LOGON_FAILURE in certain situations
1249 * (session setups in particular).
1250 *
1251 * @param nt_status NTSTATUS input for squashing.
1252 * @return the 'squashed' nt_status
1253 **/
1254
1255 NTSTATUS nt_status_squash(NTSTATUS nt_status)
1256 {
1257 if NT_STATUS_IS_OK(nt_status) {
1258 return nt_status;
1259 } else if NT_STATUS_EQUAL(nt_status, NT_STATUS_NO_SUCH_USER) {
1260 /* Match WinXP and don't give the game away */
1261 return NT_STATUS_LOGON_FAILURE;
1262
1263 } else if NT_STATUS_EQUAL(nt_status, NT_STATUS_WRONG_PASSWORD) {
1264 /* Match WinXP and don't give the game away */
1265 return NT_STATUS_LOGON_FAILURE;
1266 } else {
1267 return nt_status;
1268 }
1269 }
1270
1271
1272
reg import