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Fix some misleading debug messages.
[Samba/gebeck_regimport.git] / source / auth / auth_util.c
blob789193c6106a7867f6dfe43585d949945be21899
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_ERR(uid_to_sid(&user_sid, uid))) {
611 return NULL;
612 }
613 if (NT_STATUS_IS_ERR(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_ERR(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(SAM_ACCOUNT *sampass,
654 int *n_groups, DOM_SID **groups, gid_t **unix_groups)
655 {
656 uid_t uid;
657 gid_t gid;
658 int n_unix_groups;
659 int i;
660
661 *n_groups = 0;
662 *groups = NULL;
663
664 if (NT_STATUS_IS_ERR(sid_to_uid(pdb_get_user_sid(sampass), &uid)) || NT_STATUS_IS_ERR(sid_to_gid(pdb_get_group_sid(sampass), &gid))) {
665 DEBUG(0, ("get_user_groups_from_local_sam: error fetching uid or gid for user!\n"));
666 return NT_STATUS_UNSUCCESSFUL;
667 }
668
669 n_unix_groups = groups_max();
670 if ((*unix_groups = malloc( sizeof(gid_t) * n_unix_groups ) ) == NULL) {
671 DEBUG(0, ("get_user_groups_from_local_sam: Out of memory allocating unix group list\n"));
672 return NT_STATUS_NO_MEMORY;
673 }
674
675 if (sys_getgrouplist(pdb_get_username(sampass), gid, *unix_groups, &n_unix_groups) == -1) {
676 gid_t *groups_tmp;
677 groups_tmp = Realloc(*unix_groups, sizeof(gid_t) * n_unix_groups);
678 if (!groups_tmp) {
679 SAFE_FREE(*unix_groups);
680 return NT_STATUS_NO_MEMORY;
681 }
682 *unix_groups = groups_tmp;
683
684 if (sys_getgrouplist(pdb_get_username(sampass), gid, *unix_groups, &n_unix_groups) == -1) {
685 DEBUG(0, ("get_user_groups_from_local_sam: failed to get the unix group list\n"));
686 SAFE_FREE(*unix_groups);
687 return NT_STATUS_NO_SUCH_USER; /* what should this return value be? */
688 }
689 }
690
691 debug_unix_user_token(DBGC_CLASS, 5, uid, gid, n_unix_groups, *unix_groups);
692
693 if (n_unix_groups > 0) {
694 *groups = malloc(sizeof(DOM_SID) * n_unix_groups);
695 if (!*groups) {
696 DEBUG(0, ("get_user_group_from_local_sam: malloc() failed for DOM_SID list!\n"));
697 SAFE_FREE(*unix_groups);
698 return NT_STATUS_NO_MEMORY;
699 }
700 }
701
702 *n_groups = n_unix_groups;
703
704 for (i = 0; i < *n_groups; i++) {
705 if (NT_STATUS_IS_ERR(gid_to_sid(&(*groups)[i], (*unix_groups)[i]))) {
706 DEBUG(1, ("get_user_groups_from_local_sam: failed to convert gid %ld to a sid!\n", (long int)(*unix_groups)[i+1]));
707 SAFE_FREE(*groups);
708 SAFE_FREE(*unix_groups);
709 return NT_STATUS_NO_SUCH_USER;
710 }
711 }
712
713 return NT_STATUS_OK;
714 }
715
716 /***************************************************************************
717 Make a user_info struct
718 ***************************************************************************/
719
720 static NTSTATUS make_server_info(auth_serversupplied_info **server_info, SAM_ACCOUNT *sampass)
721 {
722 NTSTATUS ret;
723
724 *server_info = malloc(sizeof(**server_info));
725 if (!*server_info) {
726 DEBUG(0,("make_server_info: malloc failed!\n"));
727 return NT_STATUS_NO_MEMORY;
728 }
729 ZERO_STRUCTP(*server_info);
730
731 (*server_info)->sam_fill_level = SAM_FILL_ALL;
732 (*server_info)->sam_account = sampass;
733 if (NT_STATUS_IS_ERR(ret = sid_to_uid(pdb_get_user_sid(sampass), &((*server_info)->uid))))
734 return ret;
735 if (NT_STATUS_IS_ERR(ret = sid_to_gid(pdb_get_group_sid(sampass), &((*server_info)->gid))))
736 return ret;
737
738 return NT_STATUS_OK;
739 }
740
741 /***************************************************************************
742 Make (and fill) a user_info struct from a SAM_ACCOUNT
743 ***************************************************************************/
744
745 NTSTATUS make_server_info_sam(auth_serversupplied_info **server_info,
746 SAM_ACCOUNT *sampass)
747 {
748 NTSTATUS nt_status = NT_STATUS_OK;
749 const DOM_SID *user_sid = pdb_get_user_sid(sampass);
750 const DOM_SID *group_sid = pdb_get_group_sid(sampass);
751 int n_groupSIDs = 0;
752 DOM_SID *groupSIDs = NULL;
753 gid_t *unix_groups = NULL;
754 NT_USER_TOKEN *token;
755 BOOL is_guest;
756 uint32 rid;
757
758 if (!NT_STATUS_IS_OK(nt_status = make_server_info(server_info, sampass))) {
759 return nt_status;
760 }
761
762 if (!NT_STATUS_IS_OK(nt_status
763 = get_user_groups_from_local_sam(sampass,
764 &n_groupSIDs, &groupSIDs, &unix_groups)))
765 {
766 DEBUG(4,("get_user_groups_from_local_sam failed\n"));
767 free_server_info(server_info);
768 return nt_status;
769 }
770
771 is_guest = (sid_peek_rid(user_sid, &rid) && rid == DOMAIN_USER_RID_GUEST);
772
773 if (!NT_STATUS_IS_OK(nt_status = create_nt_user_token(user_sid, group_sid,
774 n_groupSIDs, groupSIDs, is_guest,
775 &token)))
776 {
777 DEBUG(4,("create_nt_user_token failed\n"));
778 SAFE_FREE(groupSIDs);
779 SAFE_FREE(unix_groups);
780 free_server_info(server_info);
781 return nt_status;
782 }
783
784 SAFE_FREE(groupSIDs);
785
786 (*server_info)->n_groups = n_groupSIDs;
787 (*server_info)->groups = unix_groups;
788
789 (*server_info)->ptok = token;
790
791 DEBUG(5,("make_server_info_sam: made server info for user %s\n",
792 pdb_get_username((*server_info)->sam_account)));
793
794 return nt_status;
795 }
796
797 /***************************************************************************
798 Make (and fill) a user_info struct from a 'struct passwd' by conversion
799 to a SAM_ACCOUNT
800 ***************************************************************************/
801
802 NTSTATUS make_server_info_pw(auth_serversupplied_info **server_info, const struct passwd *pwd)
803 {
804 NTSTATUS nt_status;
805 SAM_ACCOUNT *sampass = NULL;
806 if (!NT_STATUS_IS_OK(nt_status = pdb_init_sam_pw(&sampass, pwd))) {
807 return nt_status;
808 }
809 return make_server_info_sam(server_info, sampass);
810 }
811
812 /***************************************************************************
813 Make (and fill) a user_info struct for a guest login.
814 ***************************************************************************/
815
816 NTSTATUS make_server_info_guest(auth_serversupplied_info **server_info)
817 {
818 NTSTATUS nt_status;
819 SAM_ACCOUNT *sampass = NULL;
820 DOM_SID guest_sid;
821
822 if (!NT_STATUS_IS_OK(nt_status = pdb_init_sam(&sampass))) {
823 return nt_status;
824 }
825
826 sid_copy(&guest_sid, get_global_sam_sid());
827 sid_append_rid(&guest_sid, DOMAIN_USER_RID_GUEST);
828
829 become_root();
830 if (!pdb_getsampwsid(sampass, &guest_sid)) {
831 unbecome_root();
832 return NT_STATUS_NO_SUCH_USER;
833 }
834 unbecome_root();
835
836 nt_status = make_server_info_sam(server_info, sampass);
837
838 if (NT_STATUS_IS_OK(nt_status)) {
839 (*server_info)->guest = True;
840 }
841
842 return nt_status;
843 }
844
845 /***************************************************************************
846 Purely internal function for make_server_info_info3
847 Fill the sam account from getpwnam
848 ***************************************************************************/
849 static NTSTATUS fill_sam_account(const char *domain,
850 const char *username,
851 SAM_ACCOUNT **sam_account)
852 {
853 fstring dom_user;
854 struct passwd *passwd;
855
856 fstr_sprintf(dom_user, "%s%s%s",
857 domain, lp_winbind_separator(), username);
858
859 passwd = Get_Pwnam(dom_user);
860
861 if ( (passwd == NULL) && is_myworkgroup(domain) ) {
862 /* For our own domain also try unqualified */
863 passwd = Get_Pwnam(username);
864 }
865
866 if (passwd == NULL)
867 return NT_STATUS_NO_SUCH_USER;
868
869 return pdb_init_sam_pw(sam_account, passwd);
870 }
871
872 /***************************************************************************
873 Make a server_info struct from the info3 returned by a domain logon
874 ***************************************************************************/
875
876 NTSTATUS make_server_info_info3(TALLOC_CTX *mem_ctx,
877 const char *internal_username,
878 const char *sent_nt_username,
879 const char *domain,
880 auth_serversupplied_info **server_info,
881 NET_USER_INFO_3 *info3)
882 {
883 NTSTATUS nt_status = NT_STATUS_OK;
884
885 const char *nt_domain;
886 const char *nt_username;
887
888 SAM_ACCOUNT *sam_account = NULL;
889 DOM_SID user_sid;
890 DOM_SID group_sid;
891
892 struct passwd *passwd;
893
894 unid_t u_id, g_id;
895 int u_type, g_type;
896
897 int n_lgroupSIDs;
898 DOM_SID *lgroupSIDs = NULL;
899
900 gid_t *unix_groups = NULL;
901 NT_USER_TOKEN *token;
902
903 DOM_SID *all_group_SIDs;
904 size_t i;
905
906 /*
907 Here is where we should check the list of
908 trusted domains, and verify that the SID
909 matches.
910 */
911
912 sid_copy(&user_sid, &info3->dom_sid.sid);
913 if (!sid_append_rid(&user_sid, info3->user_rid)) {
914 return NT_STATUS_INVALID_PARAMETER;
915 }
916
917 sid_copy(&group_sid, &info3->dom_sid.sid);
918 if (!sid_append_rid(&group_sid, info3->group_rid)) {
919 return NT_STATUS_INVALID_PARAMETER;
920 }
921
922 if (!(nt_username = unistr2_tdup(mem_ctx, &(info3->uni_user_name)))) {
923 /* If the server didn't give us one, just use the one we sent them */
924 nt_username = sent_nt_username;
925 }
926
927 if (!(nt_domain = unistr2_tdup(mem_ctx, &(info3->uni_logon_dom)))) {
928 /* If the server didn't give us one, just use the one we sent them */
929 domain = domain;
930 }
931
932 u_type = ID_USERID;
933 g_type = ID_GROUPID;
934 if (NT_STATUS_IS_OK(idmap_get_id_from_sid(&u_id, &u_type, &user_sid))
935 && NT_STATUS_IS_OK(idmap_get_id_from_sid(&g_id, &g_type, &group_sid))
936 && ((passwd = getpwuid_alloc(u_id.uid)))) {
937 nt_status = pdb_init_sam_pw(&sam_account, passwd);
938 passwd_free(&passwd);
939 } else {
940
941 nt_status = fill_sam_account(nt_domain,
942 internal_username,
943 &sam_account);
944
945 if (NT_STATUS_EQUAL(nt_status, NT_STATUS_NO_SUCH_USER)) {
946 DEBUG(3,("User %s does not exist, trying to add it\n",
947 internal_username));
948 auth_add_user_script(nt_domain, internal_username);
949 nt_status = fill_sam_account(nt_domain,
950 internal_username,
951 &sam_account);
952 }
953 }
954
955 if (!NT_STATUS_IS_OK(nt_status)) {
956 DEBUG(0, ("make_server_info_info3: pdb_init_sam failed!\n"));
957 return nt_status;
958 }
959
960 if (!pdb_set_user_sid(sam_account, &user_sid, PDB_CHANGED)) {
961 pdb_free_sam(&sam_account);
962 return NT_STATUS_UNSUCCESSFUL;
963 }
964
965 if (!pdb_set_group_sid(sam_account, &group_sid, PDB_CHANGED)) {
966 pdb_free_sam(&sam_account);
967 return NT_STATUS_UNSUCCESSFUL;
968 }
969
970 if (!pdb_set_nt_username(sam_account, nt_username, PDB_CHANGED)) {
971 pdb_free_sam(&sam_account);
972 return NT_STATUS_NO_MEMORY;
973 }
974
975 if (!pdb_set_domain(sam_account, nt_domain, PDB_CHANGED)) {
976 pdb_free_sam(&sam_account);
977 return NT_STATUS_NO_MEMORY;
978 }
979
980 if (!pdb_set_fullname(sam_account, unistr2_static(&(info3->uni_full_name)), PDB_CHANGED)) {
981 pdb_free_sam(&sam_account);
982 return NT_STATUS_NO_MEMORY;
983 }
984
985 if (!pdb_set_logon_script(sam_account, unistr2_static(&(info3->uni_logon_script)), PDB_CHANGED)) {
986 pdb_free_sam(&sam_account);
987 return NT_STATUS_NO_MEMORY;
988 }
989
990 if (!pdb_set_profile_path(sam_account, unistr2_static(&(info3->uni_profile_path)), PDB_CHANGED)) {
991 pdb_free_sam(&sam_account);
992 return NT_STATUS_NO_MEMORY;
993 }
994
995 if (!pdb_set_homedir(sam_account, unistr2_static(&(info3->uni_home_dir)), PDB_CHANGED)) {
996 pdb_free_sam(&sam_account);
997 return NT_STATUS_NO_MEMORY;
998 }
999
1000 if (!pdb_set_dir_drive(sam_account, unistr2_static(&(info3->uni_dir_drive)), PDB_CHANGED)) {
1001 pdb_free_sam(&sam_account);
1002 return NT_STATUS_NO_MEMORY;
1003 }
1004
1005 if (!NT_STATUS_IS_OK(nt_status = make_server_info(server_info, sam_account))) {
1006 DEBUG(4, ("make_server_info failed!\n"));
1007 pdb_free_sam(&sam_account);
1008 return nt_status;
1009 }
1010
1011 /* Store the user group information in the server_info
1012 returned to the caller. */
1013
1014 if (!NT_STATUS_IS_OK(nt_status
1015 = get_user_groups_from_local_sam(sam_account,
1016 &n_lgroupSIDs,
1017 &lgroupSIDs,
1018 &unix_groups)))
1019 {
1020 DEBUG(4,("get_user_groups_from_local_sam failed\n"));
1021 return nt_status;
1022 }
1023
1024 (*server_info)->groups = unix_groups;
1025 (*server_info)->n_groups = n_lgroupSIDs;
1026
1027 /* Create a 'combined' list of all SIDs we might want in the SD */
1028 all_group_SIDs = malloc(sizeof(DOM_SID) *
1029 (n_lgroupSIDs + info3->num_groups2 +
1030 info3->num_other_sids));
1031 if (!all_group_SIDs) {
1032 DEBUG(0, ("malloc() failed for DOM_SID list!\n"));
1033 SAFE_FREE(lgroupSIDs);
1034 return NT_STATUS_NO_MEMORY;
1035 }
1036
1037 /* Copy the 'local' sids */
1038 memcpy(all_group_SIDs, lgroupSIDs, sizeof(DOM_SID) * n_lgroupSIDs);
1039 SAFE_FREE(lgroupSIDs);
1040
1041 /* and create (by appending rids) the 'domain' sids */
1042 for (i = 0; i < info3->num_groups2; i++) {
1043 sid_copy(&all_group_SIDs[i+n_lgroupSIDs], &(info3->dom_sid.sid));
1044 if (!sid_append_rid(&all_group_SIDs[i+n_lgroupSIDs], info3->gids[i].g_rid)) {
1045 nt_status = NT_STATUS_INVALID_PARAMETER;
1046 DEBUG(3,("could not append additional group rid 0x%x\n",
1047 info3->gids[i].g_rid));
1048 SAFE_FREE(lgroupSIDs);
1049 return nt_status;
1050 }
1051 }
1052
1053 /* Copy 'other' sids. We need to do sid filtering here to
1054 prevent possible elevation of privileges. See:
1055
1056 http://www.microsoft.com/windows2000/techinfo/administration/security/sidfilter.asp
1057 */
1058
1059 for (i = 0; i < info3->num_other_sids; i++)
1060 sid_copy(&all_group_SIDs[
1061 n_lgroupSIDs + info3->num_groups2 + i],
1062 &info3->other_sids[i].sid);
1063
1064 /* Where are the 'global' sids... */
1065
1066 /* can the user be guest? if yes, where is it stored? */
1067 if (!NT_STATUS_IS_OK(
1068 nt_status = create_nt_user_token(
1069 &user_sid, &group_sid,
1070 n_lgroupSIDs + info3->num_groups2 + info3->num_other_sids,
1071 all_group_SIDs, False, &token))) {
1072 DEBUG(4,("create_nt_user_token failed\n"));
1073 SAFE_FREE(all_group_SIDs);
1074 return nt_status;
1075 }
1076
1077 (*server_info)->ptok = token;
1078
1079 SAFE_FREE(all_group_SIDs);
1080
1081 memcpy((*server_info)->session_key, info3->user_sess_key, sizeof((*server_info)->session_key)/* 16 */);
1082 memcpy((*server_info)->first_8_lm_hash, info3->padding, 8);
1083
1084 return NT_STATUS_OK;
1085 }
1086
1087 /***************************************************************************
1088 Free a user_info struct
1089 ***************************************************************************/
1090
1091 void free_user_info(auth_usersupplied_info **user_info)
1092 {
1093 DEBUG(5,("attempting to free (and zero) a user_info structure\n"));
1094 if (*user_info != NULL) {
1095 if ((*user_info)->smb_name.str) {
1096 DEBUG(10,("structure was created for %s\n", (*user_info)->smb_name.str));
1097 }
1098 SAFE_FREE((*user_info)->smb_name.str);
1099 SAFE_FREE((*user_info)->internal_username.str);
1100 SAFE_FREE((*user_info)->client_domain.str);
1101 SAFE_FREE((*user_info)->domain.str);
1102 SAFE_FREE((*user_info)->wksta_name.str);
1103 data_blob_free(&(*user_info)->lm_resp);
1104 data_blob_free(&(*user_info)->nt_resp);
1105 SAFE_FREE((*user_info)->interactive_password);
1106 data_blob_clear_free(&(*user_info)->plaintext_password);
1107 ZERO_STRUCT(**user_info);
1108 }
1109 SAFE_FREE(*user_info);
1110 }
1111
1112 /***************************************************************************
1113 Clear out a server_info struct that has been allocated
1114 ***************************************************************************/
1115
1116 void free_server_info(auth_serversupplied_info **server_info)
1117 {
1118 DEBUG(5,("attempting to free (and zero) a server_info structure\n"));
1119 if (*server_info != NULL) {
1120 pdb_free_sam(&(*server_info)->sam_account);
1121
1122 /* call pam_end here, unless we know we are keeping it */
1123 delete_nt_token( &(*server_info)->ptok );
1124 SAFE_FREE((*server_info)->groups);
1125 ZERO_STRUCT(**server_info);
1126 }
1127 SAFE_FREE(*server_info);
1128 }
1129
1130 /***************************************************************************
1131 Make an auth_methods struct
1132 ***************************************************************************/
1133
1134 BOOL make_auth_methods(struct auth_context *auth_context, auth_methods **auth_method)
1135 {
1136 if (!auth_context) {
1137 smb_panic("no auth_context supplied to make_auth_methods()!\n");
1138 }
1139
1140 if (!auth_method) {
1141 smb_panic("make_auth_methods: pointer to auth_method pointer is NULL!\n");
1142 }
1143
1144 *auth_method = talloc(auth_context->mem_ctx, sizeof(**auth_method));
1145 if (!*auth_method) {
1146 DEBUG(0,("make_auth_method: malloc failed!\n"));
1147 return False;
1148 }
1149 ZERO_STRUCTP(*auth_method);
1150
1151 return True;
1152 }
1153
1154 /****************************************************************************
1155 Delete a SID token.
1156 ****************************************************************************/
1157
1158 void delete_nt_token(NT_USER_TOKEN **pptoken)
1159 {
1160 if (*pptoken) {
1161 NT_USER_TOKEN *ptoken = *pptoken;
1162 SAFE_FREE( ptoken->user_sids );
1163 ZERO_STRUCTP(ptoken);
1164 }
1165 SAFE_FREE(*pptoken);
1166 }
1167
1168 /****************************************************************************
1169 Duplicate a SID token.
1170 ****************************************************************************/
1171
1172 NT_USER_TOKEN *dup_nt_token(NT_USER_TOKEN *ptoken)
1173 {
1174 NT_USER_TOKEN *token;
1175
1176 if (!ptoken)
1177 return NULL;
1178
1179 if ((token = (NT_USER_TOKEN *)malloc( sizeof(NT_USER_TOKEN) ) ) == NULL)
1180 return NULL;
1181
1182 ZERO_STRUCTP(token);
1183
1184 if ((token->user_sids = (DOM_SID *)memdup( ptoken->user_sids, sizeof(DOM_SID) * ptoken->num_sids )) == NULL) {
1185 SAFE_FREE(token);
1186 return NULL;
1187 }
1188
1189 token->num_sids = ptoken->num_sids;
1190
1191 return token;
1192 }
1193
1194 /**
1195 * Squash an NT_STATUS in line with security requirements.
1196 * In an attempt to avoid giving the whole game away when users
1197 * are authenticating, NT replaces both NT_STATUS_NO_SUCH_USER and
1198 * NT_STATUS_WRONG_PASSWORD with NT_STATUS_LOGON_FAILURE in certain situations
1199 * (session setups in particular).
1200 *
1201 * @param nt_status NTSTATUS input for squashing.
1202 * @return the 'squashed' nt_status
1203 **/
1204
1205 NTSTATUS nt_status_squash(NTSTATUS nt_status)
1206 {
1207 if NT_STATUS_IS_OK(nt_status) {
1208 return nt_status;
1209 } else if NT_STATUS_EQUAL(nt_status, NT_STATUS_NO_SUCH_USER) {
1210 /* Match WinXP and don't give the game away */
1211 return NT_STATUS_LOGON_FAILURE;
1212
1213 } else if NT_STATUS_EQUAL(nt_status, NT_STATUS_WRONG_PASSWORD) {
1214 /* Match WinXP and don't give the game away */
1215 return NT_STATUS_LOGON_FAILURE;
1216 } else {
1217 return nt_status;
1218 }
1219 }
1220
1221
1222
reg import