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Some comments about the format of the on-disk reg file, as well as
[Samba/gebeck_regimport.git] / source3 / auth / auth_util.c
blobddb833a0e56df3597376f0c0ac2308d0e3b3d6c1
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 *unix_user, 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_user, sizeof(pstring));
48 if (homedir)
49 all_string_sub(add_script, "%H", homedir, sizeof(pstring));
50 ret = smbrun(add_script,NULL);
51 DEBUG(3,("smb_create_user: Running the command `%s' gave %d\n",add_script,ret));
52 return ret;
53 }
54
55 /****************************************************************************
56 Add and Delete UNIX users on demand, based on NTSTATUS codes.
57 ****************************************************************************/
58
59 void smb_user_control(const auth_usersupplied_info *user_info, auth_serversupplied_info *server_info, NTSTATUS nt_status)
60 {
61 struct passwd *pwd=NULL;
62
63 if (NT_STATUS_IS_OK(nt_status)) {
64
65 if (!(server_info->sam_fill_level & SAM_FILL_UNIX)) {
66
67 /*
68 * User validated ok against Domain controller.
69 * If the admin wants us to try and create a UNIX
70 * user on the fly, do so.
71 */
72
73 if(lp_adduser_script() && !(pwd = Get_Pwnam(user_info->internal_username.str))) {
74 smb_create_user(user_info->internal_username.str, NULL);
75 }
76 }
77 }
78 }
79
80 /****************************************************************************
81 Create a SAM_ACCOUNT - either by looking in the pdb, or by faking it up from
82 unix info.
83 ****************************************************************************/
84
85 NTSTATUS auth_get_sam_account(const char *user, SAM_ACCOUNT **account)
86 {
87 BOOL pdb_ret;
88 NTSTATUS nt_status;
89 if (!NT_STATUS_IS_OK(nt_status = pdb_init_sam(account))) {
90 return nt_status;
91 }
92
93 become_root();
94 pdb_ret = pdb_getsampwnam(*account, user);
95 unbecome_root();
96
97 if (!pdb_ret) {
98
99 struct passwd *pass = Get_Pwnam(user);
100 if (!pass)
101 return NT_STATUS_NO_SUCH_USER;
102
103 if (!NT_STATUS_IS_OK(nt_status = pdb_fill_sam_pw(*account, pass))) {
104 return nt_status;
105 }
106 }
107 return NT_STATUS_OK;
108 }
109
110 /****************************************************************************
111 Create an auth_usersupplied_data structure
112 ****************************************************************************/
113
114 static NTSTATUS make_user_info(auth_usersupplied_info **user_info,
115 const char *smb_name,
116 const char *internal_username,
117 const char *client_domain,
118 const char *domain,
119 const char *wksta_name,
120 DATA_BLOB lm_pwd, DATA_BLOB nt_pwd,
121 DATA_BLOB plaintext,
122 uint32 auth_flags, BOOL encrypted)
123 {
124
125 DEBUG(5,("attempting to make a user_info for %s (%s)\n", internal_username, smb_name));
126
127 *user_info = malloc(sizeof(**user_info));
128 if (!user_info) {
129 DEBUG(0,("malloc failed for user_info (size %d)\n", sizeof(*user_info)));
130 return NT_STATUS_NO_MEMORY;
131 }
132
133 ZERO_STRUCTP(*user_info);
134
135 DEBUG(5,("making strings for %s's user_info struct\n", internal_username));
136
137 (*user_info)->smb_name.str = strdup(smb_name);
138 if ((*user_info)->smb_name.str) {
139 (*user_info)->smb_name.len = strlen(smb_name);
140 } else {
141 free_user_info(user_info);
142 return NT_STATUS_NO_MEMORY;
143 }
144
145 (*user_info)->internal_username.str = strdup(internal_username);
146 if ((*user_info)->internal_username.str) {
147 (*user_info)->internal_username.len = strlen(internal_username);
148 } else {
149 free_user_info(user_info);
150 return NT_STATUS_NO_MEMORY;
151 }
152
153 (*user_info)->domain.str = strdup(domain);
154 if ((*user_info)->domain.str) {
155 (*user_info)->domain.len = strlen(domain);
156 } else {
157 free_user_info(user_info);
158 return NT_STATUS_NO_MEMORY;
159 }
160
161 (*user_info)->client_domain.str = strdup(client_domain);
162 if ((*user_info)->client_domain.str) {
163 (*user_info)->client_domain.len = strlen(client_domain);
164 } else {
165 free_user_info(user_info);
166 return NT_STATUS_NO_MEMORY;
167 }
168
169 (*user_info)->wksta_name.str = strdup(wksta_name);
170 if ((*user_info)->wksta_name.str) {
171 (*user_info)->wksta_name.len = strlen(wksta_name);
172 } else {
173 free_user_info(user_info);
174 return NT_STATUS_NO_MEMORY;
175 }
176
177 DEBUG(5,("making blobs for %s's user_info struct\n", internal_username));
178
179 (*user_info)->lm_resp = data_blob(lm_pwd.data, lm_pwd.length);
180 (*user_info)->nt_resp = data_blob(nt_pwd.data, nt_pwd.length);
181 (*user_info)->plaintext_password = data_blob(plaintext.data, plaintext.length);
182
183 (*user_info)->encrypted = encrypted;
184 (*user_info)->auth_flags = auth_flags;
185
186 DEBUG(10,("made an %sencrypted user_info for %s (%s)\n", encrypted ? "":"un" , internal_username, smb_name));
187
188 return NT_STATUS_OK;
189 }
190
191 /****************************************************************************
192 Create an auth_usersupplied_data structure after appropriate mapping.
193 ****************************************************************************/
194
195 NTSTATUS make_user_info_map(auth_usersupplied_info **user_info,
196 const char *smb_name,
197 const char *client_domain,
198 const char *wksta_name,
199 DATA_BLOB lm_pwd, DATA_BLOB nt_pwd,
200 DATA_BLOB plaintext,
201 uint32 ntlmssp_flags, BOOL encrypted)
202 {
203 const char *domain;
204 fstring internal_username;
205 fstrcpy(internal_username, smb_name);
206 map_username(internal_username);
207
208 DEBUG(5, ("make_user_info_map: Mapping user [%s]\\[%s] from workstation [%s]\n",
209 client_domain, smb_name, wksta_name));
210
211 if (lp_allow_trusted_domains() && *client_domain) {
212
213 /* the client could have given us a workstation name
214 or other crap for the workgroup - we really need a
215 way of telling if this domain name is one of our
216 trusted domain names
217
218 Also don't allow "" as a domain, fixes a Win9X bug
219 where it doens't supply a domain for logon script
220 'net use' commands.
221
222 Finally, we do this by looking up a cache of trusted domains!
223 */
224
225 domain = client_domain;
226
227 if (is_trusted_domain(domain)) {
228 return make_user_info(user_info, smb_name, internal_username,
229 client_domain, domain, wksta_name,
230 lm_pwd, nt_pwd, plaintext, ntlmssp_flags,
231 encrypted);
232 }
233
234 } else {
235 domain = lp_workgroup();
236 }
237
238 return make_user_info(user_info,
239 smb_name, internal_username,
240 client_domain, domain,
241 wksta_name,
242 lm_pwd, nt_pwd,
243 plaintext,
244 ntlmssp_flags, encrypted);
245
246 }
247
248 /****************************************************************************
249 Create an auth_usersupplied_data, making the DATA_BLOBs here.
250 Decrypt and encrypt the passwords.
251 ****************************************************************************/
252
253 BOOL make_user_info_netlogon_network(auth_usersupplied_info **user_info,
254 const char *smb_name,
255 const char *client_domain,
256 const char *wksta_name,
257 const uchar *lm_network_pwd, int lm_pwd_len,
258 const uchar *nt_network_pwd, int nt_pwd_len)
259 {
260 BOOL ret;
261 NTSTATUS nt_status;
262 DATA_BLOB lm_blob = data_blob(lm_network_pwd, lm_pwd_len);
263 DATA_BLOB nt_blob = data_blob(nt_network_pwd, nt_pwd_len);
264 DATA_BLOB plaintext_blob = data_blob(NULL, 0);
265 uint32 auth_flags = AUTH_FLAG_NONE;
266
267 if (lm_pwd_len)
268 auth_flags |= AUTH_FLAG_LM_RESP;
269 if (nt_pwd_len == 24) {
270 auth_flags |= AUTH_FLAG_NTLM_RESP;
271 } else if (nt_pwd_len != 0) {
272 auth_flags |= AUTH_FLAG_NTLMv2_RESP;
273 }
274
275 nt_status = make_user_info_map(user_info,
276 smb_name, client_domain,
277 wksta_name,
278 lm_blob, nt_blob,
279 plaintext_blob,
280 auth_flags, True);
281
282 ret = NT_STATUS_IS_OK(nt_status) ? True : False;
283
284 data_blob_free(&lm_blob);
285 data_blob_free(&nt_blob);
286 return ret;
287 }
288
289 /****************************************************************************
290 Create an auth_usersupplied_data, making the DATA_BLOBs here.
291 Decrypt and encrypt the passwords.
292 ****************************************************************************/
293
294 BOOL make_user_info_netlogon_interactive(auth_usersupplied_info **user_info,
295 const char *smb_name,
296 const char *client_domain,
297 const char *wksta_name,
298 const uchar chal[8],
299 const uchar lm_interactive_pwd[16],
300 const uchar nt_interactive_pwd[16],
301 const uchar *dc_sess_key)
302 {
303 char lm_pwd[16];
304 char nt_pwd[16];
305 unsigned char local_lm_response[24];
306 unsigned char local_nt_response[24];
307 unsigned char key[16];
308 uint32 auth_flags = AUTH_FLAG_NONE;
309
310 ZERO_STRUCT(key);
311 memcpy(key, dc_sess_key, 8);
312
313 if (lm_interactive_pwd) memcpy(lm_pwd, lm_interactive_pwd, sizeof(lm_pwd));
314 if (nt_interactive_pwd) memcpy(nt_pwd, nt_interactive_pwd, sizeof(nt_pwd));
315
316 #ifdef DEBUG_PASSWORD
317 DEBUG(100,("key:"));
318 dump_data(100, (char *)key, sizeof(key));
319
320 DEBUG(100,("lm owf password:"));
321 dump_data(100, lm_pwd, sizeof(lm_pwd));
322
323 DEBUG(100,("nt owf password:"));
324 dump_data(100, nt_pwd, sizeof(nt_pwd));
325 #endif
326
327 SamOEMhash((uchar *)lm_pwd, key, sizeof(lm_pwd));
328 SamOEMhash((uchar *)nt_pwd, key, sizeof(nt_pwd));
329
330 #ifdef DEBUG_PASSWORD
331 DEBUG(100,("decrypt of lm owf password:"));
332 dump_data(100, lm_pwd, sizeof(lm_pwd));
333
334 DEBUG(100,("decrypt of nt owf password:"));
335 dump_data(100, nt_pwd, sizeof(nt_pwd));
336 #endif
337
338 SMBOWFencrypt((const unsigned char *)lm_pwd, chal, local_lm_response);
339 SMBOWFencrypt((const unsigned char *)nt_pwd, chal, local_nt_response);
340
341 /* Password info paranoia */
342 ZERO_STRUCT(lm_pwd);
343 ZERO_STRUCT(nt_pwd);
344 ZERO_STRUCT(key);
345
346 {
347 BOOL ret;
348 NTSTATUS nt_status;
349 DATA_BLOB local_lm_blob = data_blob(local_lm_response, sizeof(local_lm_response));
350 DATA_BLOB local_nt_blob = data_blob(local_nt_response, sizeof(local_nt_response));
351 DATA_BLOB plaintext_blob = data_blob(NULL, 0);
352
353 if (lm_interactive_pwd)
354 auth_flags |= AUTH_FLAG_LM_RESP;
355 if (nt_interactive_pwd)
356 auth_flags |= AUTH_FLAG_NTLM_RESP;
357
358 nt_status = make_user_info_map(user_info,
359 smb_name, client_domain,
360 wksta_name,
361 local_lm_blob,
362 local_nt_blob,
363 plaintext_blob,
364 auth_flags, True);
365
366 ret = NT_STATUS_IS_OK(nt_status) ? True : False;
367 data_blob_free(&local_lm_blob);
368 data_blob_free(&local_nt_blob);
369 return ret;
370 }
371 }
372
373
374 /****************************************************************************
375 Create an auth_usersupplied_data structure
376 ****************************************************************************/
377
378 BOOL make_user_info_for_reply(auth_usersupplied_info **user_info,
379 const char *smb_name,
380 const char *client_domain,
381 const uint8 chal[8],
382 DATA_BLOB plaintext_password)
383 {
384
385 DATA_BLOB local_lm_blob;
386 DATA_BLOB local_nt_blob;
387 NTSTATUS ret = NT_STATUS_UNSUCCESSFUL;
388 uint32 auth_flags = AUTH_FLAG_NONE;
389
390 /*
391 * Not encrypted - do so.
392 */
393
394 DEBUG(5,("make_user_info_for_reply: User passwords not in encrypted format.\n"));
395
396 if (plaintext_password.data) {
397 unsigned char local_lm_response[24];
398
399 #ifdef DEBUG_PASSWORD
400 DEBUG(10,("Unencrypted password (len %d):\n",plaintext_password.length));
401 dump_data(100, plaintext_password.data, plaintext_password.length);
402 #endif
403
404 SMBencrypt( (const uchar *)plaintext_password.data, (const uchar*)chal, local_lm_response);
405 local_lm_blob = data_blob(local_lm_response, 24);
406
407 /* We can't do an NT hash here, as the password needs to be
408 case insensitive */
409 local_nt_blob = data_blob(NULL, 0);
410
411 auth_flags = (AUTH_FLAG_PLAINTEXT | AUTH_FLAG_LM_RESP);
412 } else {
413 local_lm_blob = data_blob(NULL, 0);
414 local_nt_blob = data_blob(NULL, 0);
415 }
416
417 ret = make_user_info_map(user_info, smb_name,
418 client_domain,
419 get_remote_machine_name(),
420 local_lm_blob,
421 local_nt_blob,
422 plaintext_password,
423 auth_flags, False);
424
425 data_blob_free(&local_lm_blob);
426 return NT_STATUS_IS_OK(ret) ? True : False;
427 }
428
429 /****************************************************************************
430 Create an auth_usersupplied_data structure
431 ****************************************************************************/
432
433 NTSTATUS make_user_info_for_reply_enc(auth_usersupplied_info **user_info,
434 const char *smb_name,
435 const char *client_domain,
436 DATA_BLOB lm_resp, DATA_BLOB nt_resp)
437 {
438 uint32 auth_flags = AUTH_FLAG_NONE;
439
440 DATA_BLOB no_plaintext_blob = data_blob(NULL, 0);
441
442 if (lm_resp.length == 24) {
443 auth_flags |= AUTH_FLAG_LM_RESP;
444 }
445 if (nt_resp.length == 0) {
446 } else if (nt_resp.length == 24) {
447 auth_flags |= AUTH_FLAG_NTLM_RESP;
448 } else {
449 auth_flags |= AUTH_FLAG_NTLMv2_RESP;
450 }
451
452 return make_user_info_map(user_info, smb_name,
453 client_domain,
454 get_remote_machine_name(),
455 lm_resp,
456 nt_resp,
457 no_plaintext_blob,
458 auth_flags, True);
459 }
460
461 /****************************************************************************
462 Create a guest user_info blob, for anonymous authenticaion.
463 ****************************************************************************/
464
465 BOOL make_user_info_guest(auth_usersupplied_info **user_info)
466 {
467 DATA_BLOB lm_blob = data_blob(NULL, 0);
468 DATA_BLOB nt_blob = data_blob(NULL, 0);
469 DATA_BLOB plaintext_blob = data_blob(NULL, 0);
470 uint32 auth_flags = AUTH_FLAG_NONE;
471 NTSTATUS nt_status;
472
473 nt_status = make_user_info(user_info,
474 "","",
475 "","",
476 "",
477 nt_blob, lm_blob,
478 plaintext_blob,
479 auth_flags, True);
480
481 return NT_STATUS_IS_OK(nt_status) ? True : False;
482 }
483
484 /****************************************************************************
485 prints a NT_USER_TOKEN to debug output.
486 ****************************************************************************/
487
488 void debug_nt_user_token(int dbg_class, int dbg_lev, NT_USER_TOKEN *token)
489 {
490 fstring sid_str;
491 size_t i;
492
493 if (!token) {
494 DEBUGC(dbg_class, dbg_lev, ("NT user token: (NULL)\n"));
495 return;
496 }
497
498 DEBUGC(dbg_class, dbg_lev, ("NT user token of user %s\n",
499 sid_to_string(sid_str, &token->user_sids[0]) ));
500 DEBUGADDC(dbg_class, dbg_lev, ("contains %i SIDs\n", token->num_sids));
501 for (i = 0; i < token->num_sids; i++)
502 DEBUGADDC(dbg_class, dbg_lev, ("SID[%3i]: %s\n", i,
503 sid_to_string(sid_str, &token->user_sids[i])));
504 }
505
506 /****************************************************************************
507 prints a UNIX 'token' to debug output.
508 ****************************************************************************/
509
510 void debug_unix_user_token(int dbg_class, int dbg_lev, uid_t uid, gid_t gid, int n_groups, gid_t *groups)
511 {
512 int i;
513 DEBUGC(dbg_class, dbg_lev, ("UNIX token of user %ld\n", (long int)uid));
514
515 DEBUGADDC(dbg_class, dbg_lev, ("Primary group is %ld and contains %i supplementary groups\n", (long int)gid, n_groups));
516 for (i = 0; i < n_groups; i++)
517 DEBUGADDC(dbg_class, dbg_lev, ("Group[%3i]: %ld\n", i,
518 (long int)groups[i]));
519 }
520
521 /****************************************************************************
522 Create the SID list for this user.
523 ****************************************************************************/
524
525 static NTSTATUS create_nt_user_token(const DOM_SID *user_sid, const DOM_SID *group_sid,
526 int n_groupSIDs, DOM_SID *groupSIDs,
527 BOOL is_guest, NT_USER_TOKEN **token)
528 {
529 NTSTATUS nt_status = NT_STATUS_OK;
530 NT_USER_TOKEN *ptoken;
531 int i;
532 int sid_ndx;
533
534 if ((ptoken = malloc( sizeof(NT_USER_TOKEN) ) ) == NULL) {
535 DEBUG(0, ("create_nt_token: Out of memory allocating token\n"));
536 nt_status = NT_STATUS_NO_MEMORY;
537 return nt_status;
538 }
539
540 ZERO_STRUCTP(ptoken);
541
542 ptoken->num_sids = n_groupSIDs + 5;
543
544 if ((ptoken->user_sids = (DOM_SID *)malloc( sizeof(DOM_SID) * ptoken->num_sids )) == NULL) {
545 DEBUG(0, ("create_nt_token: Out of memory allocating SIDs\n"));
546 nt_status = NT_STATUS_NO_MEMORY;
547 return nt_status;
548 }
549
550 memset((char*)ptoken->user_sids,0,sizeof(DOM_SID) * ptoken->num_sids);
551
552 /*
553 * Note - user SID *MUST* be first in token !
554 * se_access_check depends on this.
555 *
556 * Primary group SID is second in token. Convention.
557 */
558
559 sid_copy(&ptoken->user_sids[PRIMARY_USER_SID_INDEX], user_sid);
560 if (group_sid)
561 sid_copy(&ptoken->user_sids[PRIMARY_GROUP_SID_INDEX], group_sid);
562
563 /*
564 * Finally add the "standard" SIDs.
565 * The only difference between guest and "anonymous" (which we
566 * don't really support) is the addition of Authenticated_Users.
567 */
568
569 sid_copy(&ptoken->user_sids[2], &global_sid_World);
570 sid_copy(&ptoken->user_sids[3], &global_sid_Network);
571
572 if (is_guest)
573 sid_copy(&ptoken->user_sids[4], &global_sid_Builtin_Guests);
574 else
575 sid_copy(&ptoken->user_sids[4], &global_sid_Authenticated_Users);
576
577 sid_ndx = 5; /* next available spot */
578
579 for (i = 0; i < n_groupSIDs; i++) {
580 size_t check_sid_idx;
581 for (check_sid_idx = 1; check_sid_idx < ptoken->num_sids; check_sid_idx++) {
582 if (sid_equal(&ptoken->user_sids[check_sid_idx],
583 &groupSIDs[i])) {
584 break;
585 }
586 }
587
588 if (check_sid_idx >= ptoken->num_sids) /* Not found already */ {
589 sid_copy(&ptoken->user_sids[sid_ndx++], &groupSIDs[i]);
590 } else {
591 ptoken->num_sids--;
592 }
593 }
594
595 debug_nt_user_token(DBGC_AUTH, 10, ptoken);
596
597 *token = ptoken;
598
599 return nt_status;
600 }
601
602 /****************************************************************************
603 Create the SID list for this user.
604 ****************************************************************************/
605
606 NT_USER_TOKEN *create_nt_token(uid_t uid, gid_t gid, int ngroups, gid_t *groups, BOOL is_guest)
607 {
608 DOM_SID user_sid;
609 DOM_SID group_sid;
610 DOM_SID *group_sids;
611 NT_USER_TOKEN *token;
612 int i;
613
614 if (!uid_to_sid(&user_sid, uid)) {
615 return NULL;
616 }
617 if (!gid_to_sid(&group_sid, gid)) {
618 return NULL;
619 }
620
621 group_sids = malloc(sizeof(DOM_SID) * ngroups);
622 if (!group_sids) {
623 DEBUG(0, ("create_nt_token: malloc() failed for DOM_SID list!\n"));
624 return NULL;
625 }
626
627 for (i = 0; i < ngroups; i++) {
628 if (!gid_to_sid(&(group_sids)[i], (groups)[i])) {
629 DEBUG(1, ("create_nt_token: failed to convert gid %ld to a sid!\n", (long int)groups[i]));
630 SAFE_FREE(group_sids);
631 return NULL;
632 }
633 }
634
635 if (!NT_STATUS_IS_OK(create_nt_user_token(&user_sid, &group_sid,
636 ngroups, group_sids, is_guest, &token))) {
637 SAFE_FREE(group_sids);
638 return NULL;
639 }
640
641 SAFE_FREE(group_sids);
642
643 return token;
644 }
645
646 /******************************************************************************
647 * this function returns the groups (SIDs) of the local SAM the user is in.
648 * If this samba server is a DC of the domain the user belongs to, it returns
649 * both domain groups and local / builtin groups. If the user is in a trusted
650 * domain, or samba is a member server of a domain, then this function returns
651 * local and builtin groups the user is a member of.
652 *
653 * currently this is a hack, as there is no sam implementation that is capable
654 * of groups.
655 ******************************************************************************/
656
657 static NTSTATUS get_user_groups_from_local_sam(SAM_ACCOUNT *sampass,
658 int *n_groups, DOM_SID **groups, gid_t **unix_groups)
659 {
660 uid_t uid;
661 gid_t gid;
662 int n_unix_groups;
663 int i;
664 struct passwd *usr;
665
666 *n_groups = 0;
667 *groups = NULL;
668
669 if (!IS_SAM_UNIX_USER(sampass)) {
670 DEBUG(1, ("user %s does not have a unix identity!\n", pdb_get_username(sampass)));
671 return NT_STATUS_NO_SUCH_USER;
672 }
673
674 uid = pdb_get_uid(sampass);
675 gid = pdb_get_gid(sampass);
676
677 n_unix_groups = groups_max();
678 if ((*unix_groups = malloc( sizeof(gid_t) * n_unix_groups ) ) == NULL) {
679 DEBUG(0, ("get_user_groups_from_local_sam: Out of memory allocating unix group list\n"));
680 passwd_free(&usr);
681 return NT_STATUS_NO_MEMORY;
682 }
683
684 if (sys_getgrouplist(pdb_get_username(sampass), gid, *unix_groups, &n_unix_groups) == -1) {
685 gid_t *groups_tmp;
686 groups_tmp = Realloc(*unix_groups, sizeof(gid_t) * n_unix_groups);
687 if (!groups_tmp) {
688 SAFE_FREE(*unix_groups);
689 passwd_free(&usr);
690 return NT_STATUS_NO_MEMORY;
691 }
692 *unix_groups = groups_tmp;
693
694 if (sys_getgrouplist(pdb_get_username(sampass), gid, *unix_groups, &n_unix_groups) == -1) {
695 DEBUG(0, ("get_user_groups_from_local_sam: failed to get the unix group list\n"));
696 SAFE_FREE(*unix_groups);
697 passwd_free(&usr);
698 return NT_STATUS_NO_SUCH_USER; /* what should this return value be? */
699 }
700 }
701
702 debug_unix_user_token(DBGC_CLASS, 5, uid, gid, n_unix_groups, *unix_groups);
703
704 if (n_unix_groups > 0) {
705 *groups = malloc(sizeof(DOM_SID) * n_unix_groups);
706 if (!*groups) {
707 DEBUG(0, ("get_user_group_from_local_sam: malloc() failed for DOM_SID list!\n"));
708 SAFE_FREE(*unix_groups);
709 return NT_STATUS_NO_MEMORY;
710 }
711 }
712
713 *n_groups = n_unix_groups;
714
715 for (i = 0; i < *n_groups; i++) {
716 if (!gid_to_sid(&(*groups)[i], (*unix_groups)[i])) {
717 DEBUG(1, ("get_user_groups_from_local_sam: failed to convert gid %ld to a sid!\n", (long int)(*unix_groups)[i+1]));
718 SAFE_FREE(*groups);
719 SAFE_FREE(*unix_groups);
720 return NT_STATUS_NO_SUCH_USER;
721 }
722 }
723
724 return NT_STATUS_OK;
725 }
726
727 /***************************************************************************
728 Make a user_info struct
729 ***************************************************************************/
730
731 static NTSTATUS make_server_info(auth_serversupplied_info **server_info, SAM_ACCOUNT *sampass)
732 {
733 *server_info = malloc(sizeof(**server_info));
734 if (!*server_info) {
735 DEBUG(0,("make_server_info: malloc failed!\n"));
736 return NT_STATUS_NO_MEMORY;
737 }
738 ZERO_STRUCTP(*server_info);
739
740 (*server_info)->sam_fill_level = SAM_FILL_ALL;
741 (*server_info)->sam_account = sampass;
742
743 return NT_STATUS_OK;
744 }
745
746 /***************************************************************************
747 Make (and fill) a user_info struct from a SAM_ACCOUNT
748 ***************************************************************************/
749
750 NTSTATUS make_server_info_sam(auth_serversupplied_info **server_info,
751 SAM_ACCOUNT *sampass)
752 {
753 NTSTATUS nt_status = NT_STATUS_OK;
754 const DOM_SID *user_sid = pdb_get_user_sid(sampass);
755 const DOM_SID *group_sid = pdb_get_group_sid(sampass);
756 int n_groupSIDs = 0;
757 DOM_SID *groupSIDs = NULL;
758 gid_t *unix_groups = NULL;
759 NT_USER_TOKEN *token;
760 BOOL is_guest;
761 uint32 rid;
762
763 if (!NT_STATUS_IS_OK(nt_status = make_server_info(server_info, sampass))) {
764 return nt_status;
765 }
766
767 if (!NT_STATUS_IS_OK(nt_status
768 = get_user_groups_from_local_sam(sampass,
769 &n_groupSIDs, &groupSIDs, &unix_groups)))
770 {
771 DEBUG(4,("get_user_groups_from_local_sam failed\n"));
772 free_server_info(server_info);
773 return nt_status;
774 }
775
776 is_guest = (sid_peek_rid(user_sid, &rid) && rid == DOMAIN_USER_RID_GUEST);
777
778 if (!NT_STATUS_IS_OK(nt_status = create_nt_user_token(user_sid, group_sid,
779 n_groupSIDs, groupSIDs, is_guest,
780 &token)))
781 {
782 DEBUG(4,("create_nt_user_token failed\n"));
783 SAFE_FREE(groupSIDs);
784 SAFE_FREE(unix_groups);
785 free_server_info(server_info);
786 return nt_status;
787 }
788
789 SAFE_FREE(groupSIDs);
790
791 (*server_info)->n_groups = n_groupSIDs;
792 (*server_info)->groups = unix_groups;
793
794 (*server_info)->ptok = token;
795
796 DEBUG(5,("make_server_info_sam: made server info for user %s\n",
797 pdb_get_username((*server_info)->sam_account)));
798
799 return nt_status;
800 }
801
802 /***************************************************************************
803 Make (and fill) a user_info struct from a 'struct passwd' by conversion
804 to a SAM_ACCOUNT
805 ***************************************************************************/
806
807 NTSTATUS make_server_info_pw(auth_serversupplied_info **server_info, const struct passwd *pwd)
808 {
809 NTSTATUS nt_status;
810 SAM_ACCOUNT *sampass = NULL;
811 if (!NT_STATUS_IS_OK(nt_status = pdb_init_sam_pw(&sampass, pwd))) {
812 return nt_status;
813 }
814 return make_server_info_sam(server_info, sampass);
815 }
816
817 /***************************************************************************
818 Make (and fill) a user_info struct for a guest login.
819 ***************************************************************************/
820
821 NTSTATUS make_server_info_guest(auth_serversupplied_info **server_info)
822 {
823 NTSTATUS nt_status;
824 SAM_ACCOUNT *sampass = NULL;
825 DOM_SID guest_sid;
826
827 if (!NT_STATUS_IS_OK(nt_status = pdb_init_sam(&sampass))) {
828 return nt_status;
829 }
830
831 sid_copy(&guest_sid, get_global_sam_sid());
832 sid_append_rid(&guest_sid, DOMAIN_USER_RID_GUEST);
833
834 become_root();
835 if (!pdb_getsampwsid(sampass, &guest_sid)) {
836 unbecome_root();
837 return NT_STATUS_NO_SUCH_USER;
838 }
839 unbecome_root();
840
841 nt_status = make_server_info_sam(server_info, sampass);
842
843 if (NT_STATUS_IS_OK(nt_status)) {
844 (*server_info)->guest = True;
845 }
846
847 return nt_status;
848 }
849
850 /***************************************************************************
851 Make a server_info struct from the info3 returned by a domain logon
852 ***************************************************************************/
853
854 NTSTATUS make_server_info_info3(TALLOC_CTX *mem_ctx,
855 const char *internal_username,
856 const char *sent_nt_username,
857 const char *domain,
858 auth_serversupplied_info **server_info,
859 NET_USER_INFO_3 *info3)
860 {
861 NTSTATUS nt_status = NT_STATUS_OK;
862
863 const char *nt_domain;
864 const char *nt_username;
865
866 SAM_ACCOUNT *sam_account = NULL;
867 DOM_SID user_sid;
868 DOM_SID group_sid;
869
870 struct passwd *passwd;
871
872 unid_t u_id, g_id;
873 int u_type, g_type;
874
875 int n_lgroupSIDs;
876 DOM_SID *lgroupSIDs = NULL;
877
878 gid_t *unix_groups = NULL;
879 NT_USER_TOKEN *token;
880
881 DOM_SID *all_group_SIDs;
882 size_t i;
883
884 /*
885 Here is where we should check the list of
886 trusted domains, and verify that the SID
887 matches.
888 */
889
890 sid_copy(&user_sid, &info3->dom_sid.sid);
891 if (!sid_append_rid(&user_sid, info3->user_rid)) {
892 return NT_STATUS_INVALID_PARAMETER;
893 }
894
895 sid_copy(&group_sid, &info3->dom_sid.sid);
896 if (!sid_append_rid(&group_sid, info3->group_rid)) {
897 return NT_STATUS_INVALID_PARAMETER;
898 }
899
900 if (!(nt_username = unistr2_tdup(mem_ctx, &(info3->uni_user_name)))) {
901 /* If the server didn't give us one, just use the one we sent them */
902 nt_username = sent_nt_username;
903 }
904
905 if (!(nt_domain = unistr2_tdup(mem_ctx, &(info3->uni_logon_dom)))) {
906 /* If the server didn't give us one, just use the one we sent them */
907 domain = domain;
908 }
909
910 u_type = ID_USERID;
911 g_type = ID_GROUPID;
912 if (NT_STATUS_IS_OK(idmap_get_id_from_sid(&u_id, &u_type, &user_sid))
913 && NT_STATUS_IS_OK(idmap_get_id_from_sid(&g_id, &g_type, &group_sid))
914 && ((passwd = getpwuid_alloc(u_id.uid)))) {
915 nt_status = pdb_init_sam_pw(&sam_account, passwd);
916 passwd_free(&passwd);
917 } else {
918 char *dom_user;
919 dom_user = talloc_asprintf(mem_ctx, "%s%s%s",
920 nt_domain,
921 lp_winbind_separator(),
922 internal_username);
923
924 if (!dom_user) {
925 DEBUG(0, ("talloc_asprintf failed!\n"));
926 return NT_STATUS_NO_MEMORY;
927 } else {
928
929 if (!(passwd = Get_Pwnam(dom_user))
930 /* Only lookup local for the local
931 domain, we don't want this for
932 trusted domains */
933 && strequal(nt_domain, lp_workgroup())) {
934 passwd = Get_Pwnam(internal_username);
935 }
936
937 if (!passwd) {
938 return NT_STATUS_NO_SUCH_USER;
939 } else {
940 nt_status = pdb_init_sam_pw(&sam_account, passwd);
941 }
942 }
943 }
944
945 if (!NT_STATUS_IS_OK(nt_status)) {
946 DEBUG(0, ("make_server_info_info3: pdb_init_sam failed!\n"));
947 return nt_status;
948 }
949
950 if (!pdb_set_user_sid(sam_account, &user_sid, PDB_CHANGED)) {
951 pdb_free_sam(&sam_account);
952 return NT_STATUS_UNSUCCESSFUL;
953 }
954
955 if (!pdb_set_group_sid(sam_account, &group_sid, PDB_CHANGED)) {
956 pdb_free_sam(&sam_account);
957 return NT_STATUS_UNSUCCESSFUL;
958 }
959
960 if (!pdb_set_nt_username(sam_account, nt_username, PDB_CHANGED)) {
961 pdb_free_sam(&sam_account);
962 return NT_STATUS_NO_MEMORY;
963 }
964
965 if (!pdb_set_domain(sam_account, nt_domain, PDB_CHANGED)) {
966 pdb_free_sam(&sam_account);
967 return NT_STATUS_NO_MEMORY;
968 }
969
970 if (!pdb_set_fullname(sam_account, unistr2_static(&(info3->uni_full_name)), PDB_CHANGED)) {
971 pdb_free_sam(&sam_account);
972 return NT_STATUS_NO_MEMORY;
973 }
974
975 if (!pdb_set_logon_script(sam_account, unistr2_static(&(info3->uni_logon_script)), PDB_CHANGED)) {
976 pdb_free_sam(&sam_account);
977 return NT_STATUS_NO_MEMORY;
978 }
979
980 if (!pdb_set_profile_path(sam_account, unistr2_static(&(info3->uni_profile_path)), PDB_CHANGED)) {
981 pdb_free_sam(&sam_account);
982 return NT_STATUS_NO_MEMORY;
983 }
984
985 if (!pdb_set_homedir(sam_account, unistr2_static(&(info3->uni_home_dir)), PDB_CHANGED)) {
986 pdb_free_sam(&sam_account);
987 return NT_STATUS_NO_MEMORY;
988 }
989
990 if (!pdb_set_dir_drive(sam_account, unistr2_static(&(info3->uni_dir_drive)), PDB_CHANGED)) {
991 pdb_free_sam(&sam_account);
992 return NT_STATUS_NO_MEMORY;
993 }
994
995 if (!NT_STATUS_IS_OK(nt_status = make_server_info(server_info, sam_account))) {
996 DEBUG(4, ("make_server_info failed!\n"));
997 pdb_free_sam(&sam_account);
998 return nt_status;
999 }
1000
1001 /* Store the user group information in the server_info
1002 returned to the caller. */
1003
1004 if (!NT_STATUS_IS_OK(nt_status
1005 = get_user_groups_from_local_sam(sam_account,
1006 &n_lgroupSIDs,
1007 &lgroupSIDs,
1008 &unix_groups)))
1009 {
1010 DEBUG(4,("get_user_groups_from_local_sam failed\n"));
1011 return nt_status;
1012 }
1013
1014 (*server_info)->groups = unix_groups;
1015 (*server_info)->n_groups = n_lgroupSIDs;
1016
1017 /* Create a 'combined' list of all SIDs we might want in the SD */
1018 all_group_SIDs = malloc(sizeof(DOM_SID) *
1019 (n_lgroupSIDs + info3->num_groups2 +
1020 info3->num_other_sids));
1021 if (!all_group_SIDs) {
1022 DEBUG(0, ("create_nt_token_info3: malloc() failed for DOM_SID list!\n"));
1023 SAFE_FREE(lgroupSIDs);
1024 return NT_STATUS_NO_MEMORY;
1025 }
1026
1027 /* Copy the 'local' sids */
1028 memcpy(all_group_SIDs, lgroupSIDs, sizeof(DOM_SID) * n_lgroupSIDs);
1029 SAFE_FREE(lgroupSIDs);
1030
1031 /* and create (by appending rids) the 'domain' sids */
1032 for (i = 0; i < info3->num_groups2; i++) {
1033 sid_copy(&all_group_SIDs[i+n_lgroupSIDs], &(info3->dom_sid.sid));
1034 if (!sid_append_rid(&all_group_SIDs[i+n_lgroupSIDs], info3->gids[i].g_rid)) {
1035 nt_status = NT_STATUS_INVALID_PARAMETER;
1036 DEBUG(3,("create_nt_token_info3: could not append additional group rid 0x%x\n",
1037 info3->gids[i].g_rid));
1038 SAFE_FREE(lgroupSIDs);
1039 return nt_status;
1040 }
1041 }
1042
1043 /* Copy 'other' sids. We need to do sid filtering here to
1044 prevent possible elevation of privileges. See:
1045
1046 http://www.microsoft.com/windows2000/techinfo/administration/security/sidfilter.asp
1047 */
1048
1049 for (i = 0; i < info3->num_other_sids; i++)
1050 sid_copy(&all_group_SIDs[
1051 n_lgroupSIDs + info3->num_groups2 + i],
1052 &info3->other_sids[i].sid);
1053
1054 /* Where are the 'global' sids... */
1055
1056 /* can the user be guest? if yes, where is it stored? */
1057 if (!NT_STATUS_IS_OK(
1058 nt_status = create_nt_user_token(
1059 &user_sid, &group_sid,
1060 n_lgroupSIDs + info3->num_groups2 + info3->num_other_sids,
1061 all_group_SIDs, False, &token))) {
1062 DEBUG(4,("create_nt_user_token failed\n"));
1063 SAFE_FREE(all_group_SIDs);
1064 return nt_status;
1065 }
1066
1067 (*server_info)->ptok = token;
1068
1069 SAFE_FREE(all_group_SIDs);
1070
1071 memcpy((*server_info)->session_key, info3->user_sess_key, sizeof((*server_info)->session_key)/* 16 */);
1072 memcpy((*server_info)->first_8_lm_hash, info3->padding, 8);
1073
1074 return NT_STATUS_OK;
1075 }
1076
1077 /***************************************************************************
1078 Free a user_info struct
1079 ***************************************************************************/
1080
1081 void free_user_info(auth_usersupplied_info **user_info)
1082 {
1083 DEBUG(5,("attempting to free (and zero) a user_info structure\n"));
1084 if (*user_info != NULL) {
1085 if ((*user_info)->smb_name.str) {
1086 DEBUG(10,("structure was created for %s\n", (*user_info)->smb_name.str));
1087 }
1088 SAFE_FREE((*user_info)->smb_name.str);
1089 SAFE_FREE((*user_info)->internal_username.str);
1090 SAFE_FREE((*user_info)->client_domain.str);
1091 SAFE_FREE((*user_info)->domain.str);
1092 SAFE_FREE((*user_info)->wksta_name.str);
1093 data_blob_free(&(*user_info)->lm_resp);
1094 data_blob_free(&(*user_info)->nt_resp);
1095 SAFE_FREE((*user_info)->interactive_password);
1096 data_blob_clear_free(&(*user_info)->plaintext_password);
1097 ZERO_STRUCT(**user_info);
1098 }
1099 SAFE_FREE(*user_info);
1100 }
1101
1102 /***************************************************************************
1103 Clear out a server_info struct that has been allocated
1104 ***************************************************************************/
1105
1106 void free_server_info(auth_serversupplied_info **server_info)
1107 {
1108 DEBUG(5,("attempting to free (and zero) a server_info structure\n"));
1109 if (*server_info != NULL) {
1110 pdb_free_sam(&(*server_info)->sam_account);
1111
1112 /* call pam_end here, unless we know we are keeping it */
1113 delete_nt_token( &(*server_info)->ptok );
1114 SAFE_FREE((*server_info)->groups);
1115 ZERO_STRUCT(**server_info);
1116 }
1117 SAFE_FREE(*server_info);
1118 }
1119
1120 /***************************************************************************
1121 Make an auth_methods struct
1122 ***************************************************************************/
1123
1124 BOOL make_auth_methods(struct auth_context *auth_context, auth_methods **auth_method)
1125 {
1126 if (!auth_context) {
1127 smb_panic("no auth_context supplied to make_auth_methods()!\n");
1128 }
1129
1130 if (!auth_method) {
1131 smb_panic("make_auth_methods: pointer to auth_method pointer is NULL!\n");
1132 }
1133
1134 *auth_method = talloc(auth_context->mem_ctx, sizeof(**auth_method));
1135 if (!*auth_method) {
1136 DEBUG(0,("make_auth_method: malloc failed!\n"));
1137 return False;
1138 }
1139 ZERO_STRUCTP(*auth_method);
1140
1141 return True;
1142 }
1143
1144 /****************************************************************************
1145 Delete a SID token.
1146 ****************************************************************************/
1147
1148 void delete_nt_token(NT_USER_TOKEN **pptoken)
1149 {
1150 if (*pptoken) {
1151 NT_USER_TOKEN *ptoken = *pptoken;
1152 SAFE_FREE( ptoken->user_sids );
1153 ZERO_STRUCTP(ptoken);
1154 }
1155 SAFE_FREE(*pptoken);
1156 }
1157
1158 /****************************************************************************
1159 Duplicate a SID token.
1160 ****************************************************************************/
1161
1162 NT_USER_TOKEN *dup_nt_token(NT_USER_TOKEN *ptoken)
1163 {
1164 NT_USER_TOKEN *token;
1165
1166 if (!ptoken)
1167 return NULL;
1168
1169 if ((token = (NT_USER_TOKEN *)malloc( sizeof(NT_USER_TOKEN) ) ) == NULL)
1170 return NULL;
1171
1172 ZERO_STRUCTP(token);
1173
1174 if ((token->user_sids = (DOM_SID *)memdup( ptoken->user_sids, sizeof(DOM_SID) * ptoken->num_sids )) == NULL) {
1175 SAFE_FREE(token);
1176 return NULL;
1177 }
1178
1179 token->num_sids = ptoken->num_sids;
1180
1181 return token;
1182 }
1183
1184 /**
1185 * Squash an NT_STATUS in line with security requirements.
1186 * In an attempt to avoid giving the whole game away when users
1187 * are authenticating, NT replaces both NT_STATUS_NO_SUCH_USER and
1188 * NT_STATUS_WRONG_PASSWORD with NT_STATUS_LOGON_FAILURE in certain situations
1189 * (session setups in particular).
1190 *
1191 * @param nt_status NTSTATUS input for squashing.
1192 * @return the 'squashed' nt_status
1193 **/
1194
1195 NTSTATUS nt_status_squash(NTSTATUS nt_status)
1196 {
1197 if NT_STATUS_IS_OK(nt_status) {
1198 return nt_status;
1199 } else if NT_STATUS_EQUAL(nt_status, NT_STATUS_NO_SUCH_USER) {
1200 /* Match WinXP and don't give the game away */
1201 return NT_STATUS_LOGON_FAILURE;
1202
1203 } else if NT_STATUS_EQUAL(nt_status, NT_STATUS_WRONG_PASSWORD) {
1204 /* Match WinXP and don't give the game away */
1205 return NT_STATUS_LOGON_FAILURE;
1206 } else {
1207 return nt_status;
1208 }
1209 }
1210
1211
1212
reg import