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
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.
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.
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.
27 #define DBGC_CLASS DBGC_AUTH
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;
35 /****************************************************************************
36 Create a UNIX user on demand.
37 ****************************************************************************/
39 static int smb_create_user(const char *domain, const char *unix_username, const char *homedir)
44 pstrcpy(add_script, lp_adduser_script());
47 all_string_sub(add_script, "%u", unix_username, sizeof(pstring));
49 all_string_sub(add_script, "%D", domain, sizeof(pstring));
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));
57 /****************************************************************************
58 Add and Delete UNIX users on demand, based on NTSTATUS codes.
59 We don't care about RID's here so ignore.
60 ****************************************************************************/
62 void auth_add_user_script(const char *domain, const char *username)
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.
71 if ( *lp_adduser_script() )
72 smb_create_user(domain, username, NULL);
74 DEBUG(10,("auth_add_user_script: no 'add user script'. Asking winbindd\n"));
76 /* should never get here is we a re a domain member running winbindd
77 However, a host set for 'security = server' might run winbindd for
80 if ( !winbind_create_user(username, NULL) ) {
81 DEBUG(5,("auth_add_user_script: winbindd_create_user() failed\n"));
87 /****************************************************************************
88 Create a SAM_ACCOUNT - either by looking in the pdb, or by faking it up from
90 ****************************************************************************/
92 NTSTATUS auth_get_sam_account(const char *user, SAM_ACCOUNT **account)
96 if (!NT_STATUS_IS_OK(nt_status = pdb_init_sam(account))) {
101 pdb_ret = pdb_getsampwnam(*account, user);
106 struct passwd *pass = Get_Pwnam(user);
108 return NT_STATUS_NO_SUCH_USER;
110 if (!NT_STATUS_IS_OK(nt_status = pdb_fill_sam_pw(*account, pass))) {
117 /****************************************************************************
118 Create an auth_usersupplied_data structure
119 ****************************************************************************/
121 static NTSTATUS make_user_info(auth_usersupplied_info **user_info,
122 const char *smb_name,
123 const char *internal_username,
124 const char *client_domain,
126 const char *wksta_name,
127 DATA_BLOB *lm_pwd, DATA_BLOB *nt_pwd,
128 DATA_BLOB *lm_interactive_pwd, DATA_BLOB *nt_interactive_pwd,
129 DATA_BLOB *plaintext,
133 DEBUG(5,("attempting to make a user_info for %s (%s)\n", internal_username, smb_name));
135 *user_info = SMB_MALLOC_P(auth_usersupplied_info);
137 DEBUG(0,("malloc failed for user_info (size %lu)\n", (unsigned long)sizeof(*user_info)));
138 return NT_STATUS_NO_MEMORY;
141 ZERO_STRUCTP(*user_info);
143 DEBUG(5,("making strings for %s's user_info struct\n", internal_username));
145 (*user_info)->smb_name.str = SMB_STRDUP(smb_name);
146 if ((*user_info)->smb_name.str) {
147 (*user_info)->smb_name.len = strlen(smb_name);
149 free_user_info(user_info);
150 return NT_STATUS_NO_MEMORY;
153 (*user_info)->internal_username.str = SMB_STRDUP(internal_username);
154 if ((*user_info)->internal_username.str) {
155 (*user_info)->internal_username.len = strlen(internal_username);
157 free_user_info(user_info);
158 return NT_STATUS_NO_MEMORY;
161 (*user_info)->domain.str = SMB_STRDUP(domain);
162 if ((*user_info)->domain.str) {
163 (*user_info)->domain.len = strlen(domain);
165 free_user_info(user_info);
166 return NT_STATUS_NO_MEMORY;
169 (*user_info)->client_domain.str = SMB_STRDUP(client_domain);
170 if ((*user_info)->client_domain.str) {
171 (*user_info)->client_domain.len = strlen(client_domain);
173 free_user_info(user_info);
174 return NT_STATUS_NO_MEMORY;
177 (*user_info)->wksta_name.str = SMB_STRDUP(wksta_name);
178 if ((*user_info)->wksta_name.str) {
179 (*user_info)->wksta_name.len = strlen(wksta_name);
181 free_user_info(user_info);
182 return NT_STATUS_NO_MEMORY;
185 DEBUG(5,("making blobs for %s's user_info struct\n", internal_username));
188 (*user_info)->lm_resp = data_blob(lm_pwd->data, lm_pwd->length);
190 (*user_info)->nt_resp = data_blob(nt_pwd->data, nt_pwd->length);
191 if (lm_interactive_pwd)
192 (*user_info)->lm_interactive_pwd = data_blob(lm_interactive_pwd->data, lm_interactive_pwd->length);
193 if (nt_interactive_pwd)
194 (*user_info)->nt_interactive_pwd = data_blob(nt_interactive_pwd->data, nt_interactive_pwd->length);
197 (*user_info)->plaintext_password = data_blob(plaintext->data, plaintext->length);
199 (*user_info)->encrypted = encrypted;
201 DEBUG(10,("made an %sencrypted user_info for %s (%s)\n", encrypted ? "":"un" , internal_username, smb_name));
206 /****************************************************************************
207 Create an auth_usersupplied_data structure after appropriate mapping.
208 ****************************************************************************/
210 NTSTATUS make_user_info_map(auth_usersupplied_info **user_info,
211 const char *smb_name,
212 const char *client_domain,
213 const char *wksta_name,
214 DATA_BLOB *lm_pwd, DATA_BLOB *nt_pwd,
215 DATA_BLOB *lm_interactive_pwd, DATA_BLOB *nt_interactive_pwd,
216 DATA_BLOB *plaintext,
220 fstring internal_username;
221 fstrcpy(internal_username, smb_name);
222 map_username(internal_username);
224 DEBUG(5, ("make_user_info_map: Mapping user [%s]\\[%s] from workstation [%s]\n",
225 client_domain, smb_name, wksta_name));
227 /* don't allow "" as a domain, fixes a Win9X bug
228 where it doens't supply a domain for logon script
229 'net use' commands. */
231 if ( *client_domain )
232 domain = client_domain;
234 domain = lp_workgroup();
236 /* do what win2k does. Always map unknown domains to our own
237 and let the "passdb backend" handle unknown users. */
239 if ( !is_trusted_domain(domain) && !strequal(domain, get_global_sam_name()) )
240 domain = get_default_sam_name();
242 /* we know that it is a trusted domain (and we are allowing them) or it is our domain */
244 return make_user_info(user_info, smb_name, internal_username,
245 client_domain, domain, wksta_name,
247 lm_interactive_pwd, nt_interactive_pwd,
248 plaintext, encrypted);
251 /****************************************************************************
252 Create an auth_usersupplied_data, making the DATA_BLOBs here.
253 Decrypt and encrypt the passwords.
254 ****************************************************************************/
256 BOOL make_user_info_netlogon_network(auth_usersupplied_info **user_info,
257 const char *smb_name,
258 const char *client_domain,
259 const char *wksta_name,
260 const uchar *lm_network_pwd, int lm_pwd_len,
261 const uchar *nt_network_pwd, int nt_pwd_len)
265 DATA_BLOB lm_blob = data_blob(lm_network_pwd, lm_pwd_len);
266 DATA_BLOB nt_blob = data_blob(nt_network_pwd, nt_pwd_len);
268 nt_status = make_user_info_map(user_info,
269 smb_name, client_domain,
271 lm_pwd_len ? &lm_blob : NULL,
272 nt_pwd_len ? &nt_blob : NULL,
276 ret = NT_STATUS_IS_OK(nt_status) ? True : False;
278 data_blob_free(&lm_blob);
279 data_blob_free(&nt_blob);
283 /****************************************************************************
284 Create an auth_usersupplied_data, making the DATA_BLOBs here.
285 Decrypt and encrypt the passwords.
286 ****************************************************************************/
288 BOOL make_user_info_netlogon_interactive(auth_usersupplied_info **user_info,
289 const char *smb_name,
290 const char *client_domain,
291 const char *wksta_name,
293 const uchar lm_interactive_pwd[16],
294 const uchar nt_interactive_pwd[16],
295 const uchar *dc_sess_key)
299 unsigned char local_lm_response[24];
300 unsigned char local_nt_response[24];
301 unsigned char key[16];
304 memcpy(key, dc_sess_key, 8);
306 if (lm_interactive_pwd) memcpy(lm_pwd, lm_interactive_pwd, sizeof(lm_pwd));
307 if (nt_interactive_pwd) memcpy(nt_pwd, nt_interactive_pwd, sizeof(nt_pwd));
309 #ifdef DEBUG_PASSWORD
311 dump_data(100, (char *)key, sizeof(key));
313 DEBUG(100,("lm owf password:"));
314 dump_data(100, lm_pwd, sizeof(lm_pwd));
316 DEBUG(100,("nt owf password:"));
317 dump_data(100, nt_pwd, sizeof(nt_pwd));
320 if (lm_interactive_pwd)
321 SamOEMhash((uchar *)lm_pwd, key, sizeof(lm_pwd));
323 if (nt_interactive_pwd)
324 SamOEMhash((uchar *)nt_pwd, key, sizeof(nt_pwd));
326 #ifdef DEBUG_PASSWORD
327 DEBUG(100,("decrypt of lm owf password:"));
328 dump_data(100, lm_pwd, sizeof(lm_pwd));
330 DEBUG(100,("decrypt of nt owf password:"));
331 dump_data(100, nt_pwd, sizeof(nt_pwd));
334 if (lm_interactive_pwd)
335 SMBOWFencrypt((const unsigned char *)lm_pwd, chal, local_lm_response);
337 if (nt_interactive_pwd)
338 SMBOWFencrypt((const unsigned char *)nt_pwd, chal, local_nt_response);
340 /* Password info paranoia */
346 DATA_BLOB local_lm_blob;
347 DATA_BLOB local_nt_blob;
349 DATA_BLOB lm_interactive_blob;
350 DATA_BLOB nt_interactive_blob;
352 if (lm_interactive_pwd) {
353 local_lm_blob = data_blob(local_lm_response, sizeof(local_lm_response));
354 lm_interactive_blob = data_blob(lm_pwd, sizeof(lm_pwd));
358 if (nt_interactive_pwd) {
359 local_nt_blob = data_blob(local_nt_response, sizeof(local_nt_response));
360 nt_interactive_blob = data_blob(nt_pwd, sizeof(nt_pwd));
364 nt_status = make_user_info_map(user_info,
365 smb_name, client_domain,
367 lm_interactive_pwd ? &local_lm_blob : NULL,
368 nt_interactive_pwd ? &local_nt_blob : NULL,
369 lm_interactive_pwd ? &lm_interactive_blob : NULL,
370 nt_interactive_pwd ? &nt_interactive_blob : NULL,
374 ret = NT_STATUS_IS_OK(nt_status) ? True : False;
375 data_blob_free(&local_lm_blob);
376 data_blob_free(&local_nt_blob);
377 data_blob_free(&lm_interactive_blob);
378 data_blob_free(&nt_interactive_blob);
384 /****************************************************************************
385 Create an auth_usersupplied_data structure
386 ****************************************************************************/
388 BOOL make_user_info_for_reply(auth_usersupplied_info **user_info,
389 const char *smb_name,
390 const char *client_domain,
392 DATA_BLOB plaintext_password)
395 DATA_BLOB local_lm_blob;
396 DATA_BLOB local_nt_blob;
397 NTSTATUS ret = NT_STATUS_UNSUCCESSFUL;
400 * Not encrypted - do so.
403 DEBUG(5,("make_user_info_for_reply: User passwords not in encrypted format.\n"));
405 if (plaintext_password.data) {
406 unsigned char local_lm_response[24];
408 #ifdef DEBUG_PASSWORD
409 DEBUG(10,("Unencrypted password (len %d):\n",plaintext_password.length));
410 dump_data(100, plaintext_password.data, plaintext_password.length);
413 SMBencrypt( (const char *)plaintext_password.data, (const uchar*)chal, local_lm_response);
414 local_lm_blob = data_blob(local_lm_response, 24);
416 /* We can't do an NT hash here, as the password needs to be
418 local_nt_blob = data_blob(NULL, 0);
421 local_lm_blob = data_blob(NULL, 0);
422 local_nt_blob = data_blob(NULL, 0);
425 ret = make_user_info_map(user_info, smb_name,
427 get_remote_machine_name(),
428 local_lm_blob.data ? &local_lm_blob : NULL,
429 local_nt_blob.data ? &local_nt_blob : NULL,
431 plaintext_password.data ? &plaintext_password : NULL,
434 data_blob_free(&local_lm_blob);
435 return NT_STATUS_IS_OK(ret) ? True : False;
438 /****************************************************************************
439 Create an auth_usersupplied_data structure
440 ****************************************************************************/
442 NTSTATUS make_user_info_for_reply_enc(auth_usersupplied_info **user_info,
443 const char *smb_name,
444 const char *client_domain,
445 DATA_BLOB lm_resp, DATA_BLOB nt_resp)
447 return make_user_info_map(user_info, smb_name,
449 get_remote_machine_name(),
450 lm_resp.data ? &lm_resp : NULL,
451 nt_resp.data ? &nt_resp : NULL,
456 /****************************************************************************
457 Create a guest user_info blob, for anonymous authenticaion.
458 ****************************************************************************/
460 BOOL make_user_info_guest(auth_usersupplied_info **user_info)
464 nt_status = make_user_info(user_info,
473 return NT_STATUS_IS_OK(nt_status) ? True : False;
476 /****************************************************************************
477 prints a NT_USER_TOKEN to debug output.
478 ****************************************************************************/
480 void debug_nt_user_token(int dbg_class, int dbg_lev, NT_USER_TOKEN *token)
486 DEBUGC(dbg_class, dbg_lev, ("NT user token: (NULL)\n"));
490 DEBUGC(dbg_class, dbg_lev, ("NT user token of user %s\n",
491 sid_to_string(sid_str, &token->user_sids[0]) ));
492 DEBUGADDC(dbg_class, dbg_lev, ("contains %lu SIDs\n", (unsigned long)token->num_sids));
493 for (i = 0; i < token->num_sids; i++)
494 DEBUGADDC(dbg_class, dbg_lev, ("SID[%3lu]: %s\n", (unsigned long)i,
495 sid_to_string(sid_str, &token->user_sids[i])));
498 /****************************************************************************
499 prints a UNIX 'token' to debug output.
500 ****************************************************************************/
502 void debug_unix_user_token(int dbg_class, int dbg_lev, uid_t uid, gid_t gid, int n_groups, gid_t *groups)
505 DEBUGC(dbg_class, dbg_lev, ("UNIX token of user %ld\n", (long int)uid));
507 DEBUGADDC(dbg_class, dbg_lev, ("Primary group is %ld and contains %i supplementary groups\n", (long int)gid, n_groups));
508 for (i = 0; i < n_groups; i++)
509 DEBUGADDC(dbg_class, dbg_lev, ("Group[%3i]: %ld\n", i,
510 (long int)groups[i]));
513 /****************************************************************************
514 Create the SID list for this user.
515 ****************************************************************************/
517 static NTSTATUS create_nt_user_token(const DOM_SID *user_sid, const DOM_SID *group_sid,
518 int n_groupSIDs, DOM_SID *groupSIDs,
519 BOOL is_guest, NT_USER_TOKEN **token)
521 NTSTATUS nt_status = NT_STATUS_OK;
522 NT_USER_TOKEN *ptoken;
526 if ((ptoken = SMB_MALLOC_P(NT_USER_TOKEN)) == NULL) {
527 DEBUG(0, ("create_nt_token: Out of memory allocating token\n"));
528 nt_status = NT_STATUS_NO_MEMORY;
532 ZERO_STRUCTP(ptoken);
534 ptoken->num_sids = n_groupSIDs + 5;
536 if ((ptoken->user_sids = SMB_MALLOC_ARRAY( DOM_SID, ptoken->num_sids )) == NULL) {
537 DEBUG(0, ("create_nt_token: Out of memory allocating SIDs\n"));
538 nt_status = NT_STATUS_NO_MEMORY;
542 memset((char*)ptoken->user_sids,0,sizeof(DOM_SID) * ptoken->num_sids);
545 * Note - user SID *MUST* be first in token !
546 * se_access_check depends on this.
548 * Primary group SID is second in token. Convention.
551 sid_copy(&ptoken->user_sids[PRIMARY_USER_SID_INDEX], user_sid);
553 sid_copy(&ptoken->user_sids[PRIMARY_GROUP_SID_INDEX], group_sid);
556 * Finally add the "standard" SIDs.
557 * The only difference between guest and "anonymous" (which we
558 * don't really support) is the addition of Authenticated_Users.
561 sid_copy(&ptoken->user_sids[2], &global_sid_World);
562 sid_copy(&ptoken->user_sids[3], &global_sid_Network);
565 sid_copy(&ptoken->user_sids[4], &global_sid_Builtin_Guests);
567 sid_copy(&ptoken->user_sids[4], &global_sid_Authenticated_Users);
569 sid_ndx = 5; /* next available spot */
571 for (i = 0; i < n_groupSIDs; i++) {
572 size_t check_sid_idx;
573 for (check_sid_idx = 1; check_sid_idx < ptoken->num_sids; check_sid_idx++) {
574 if (sid_equal(&ptoken->user_sids[check_sid_idx],
580 if (check_sid_idx >= ptoken->num_sids) /* Not found already */ {
581 sid_copy(&ptoken->user_sids[sid_ndx++], &groupSIDs[i]);
587 debug_nt_user_token(DBGC_AUTH, 10, ptoken);
594 /****************************************************************************
595 Create the SID list for this user.
596 ****************************************************************************/
598 NT_USER_TOKEN *create_nt_token(uid_t uid, gid_t gid, int ngroups, gid_t *groups, BOOL is_guest)
603 NT_USER_TOKEN *token;
606 if (!NT_STATUS_IS_OK(uid_to_sid(&user_sid, uid))) {
609 if (!NT_STATUS_IS_OK(gid_to_sid(&group_sid, gid))) {
613 group_sids = SMB_MALLOC_ARRAY(DOM_SID, ngroups);
615 DEBUG(0, ("create_nt_token: malloc() failed for DOM_SID list!\n"));
619 for (i = 0; i < ngroups; i++) {
620 if (!NT_STATUS_IS_OK(gid_to_sid(&(group_sids)[i], (groups)[i]))) {
621 DEBUG(1, ("create_nt_token: failed to convert gid %ld to a sid!\n", (long int)groups[i]));
622 SAFE_FREE(group_sids);
627 if (!NT_STATUS_IS_OK(create_nt_user_token(&user_sid, &group_sid,
628 ngroups, group_sids, is_guest, &token))) {
629 SAFE_FREE(group_sids);
633 SAFE_FREE(group_sids);
638 /******************************************************************************
639 * this function returns the groups (SIDs) of the local SAM the user is in.
640 * If this samba server is a DC of the domain the user belongs to, it returns
641 * both domain groups and local / builtin groups. If the user is in a trusted
642 * domain, or samba is a member server of a domain, then this function returns
643 * local and builtin groups the user is a member of.
645 * currently this is a hack, as there is no sam implementation that is capable
648 * NOTE!! This function will fail if you pass in a winbind user without
650 ******************************************************************************/
652 static NTSTATUS get_user_groups(const char *username, uid_t uid, gid_t gid,
653 int *n_groups, DOM_SID **groups, gid_t **unix_groups)
661 if (strchr(username, *lp_winbind_separator()) == NULL) {
665 result = pdb_enum_group_memberships(username, gid, groups,
666 unix_groups, n_groups);
671 /* We have the separator, this must be winbind */
673 n_unix_groups = winbind_getgroups( username, unix_groups );
675 DEBUG(10,("get_user_groups: winbind_getgroups(%s): result = %s\n",
676 username, n_unix_groups == -1 ? "FAIL" : "SUCCESS"));
678 if ( n_unix_groups == -1 )
679 return NT_STATUS_NO_SUCH_USER; /* what should this return
682 debug_unix_user_token(DBGC_CLASS, 5, uid, gid, n_unix_groups, *unix_groups);
684 /* now setup the space for storing the SIDS */
686 if (n_unix_groups > 0) {
688 *groups = SMB_MALLOC_ARRAY(DOM_SID, n_unix_groups);
691 DEBUG(0, ("get_user_group: malloc() failed for DOM_SID list!\n"));
692 SAFE_FREE(*unix_groups);
693 return NT_STATUS_NO_MEMORY;
697 *n_groups = n_unix_groups;
699 for (i = 0; i < *n_groups; i++) {
700 if (!NT_STATUS_IS_OK(gid_to_sid(&(*groups)[i], (*unix_groups)[i]))) {
701 DEBUG(1, ("get_user_groups: failed to convert gid %ld to a sid!\n",
702 (long int)(*unix_groups)[i+1]));
704 SAFE_FREE(*unix_groups);
705 return NT_STATUS_NO_SUCH_USER;
712 /***************************************************************************
713 Make a user_info struct
714 ***************************************************************************/
716 static NTSTATUS make_server_info(auth_serversupplied_info **server_info)
718 *server_info = SMB_MALLOC_P(auth_serversupplied_info);
720 DEBUG(0,("make_server_info: malloc failed!\n"));
721 return NT_STATUS_NO_MEMORY;
723 ZERO_STRUCTP(*server_info);
725 /* Initialise the uid and gid values to something non-zero
726 which may save us from giving away root access if there
727 is a bug in allocating these fields. */
729 (*server_info)->uid = -1;
730 (*server_info)->gid = -1;
735 /***************************************************************************
736 Fill a server_info struct from a SAM_ACCOUNT with their groups
737 ***************************************************************************/
739 static NTSTATUS add_user_groups(auth_serversupplied_info **server_info,
740 const char * unix_username,
741 SAM_ACCOUNT *sampass,
742 uid_t uid, gid_t gid)
745 const DOM_SID *user_sid = pdb_get_user_sid(sampass);
746 const DOM_SID *group_sid = pdb_get_group_sid(sampass);
748 DOM_SID *groupSIDs = NULL;
749 gid_t *unix_groups = NULL;
750 NT_USER_TOKEN *token;
754 nt_status = get_user_groups(unix_username, uid, gid,
755 &n_groupSIDs, &groupSIDs, &unix_groups);
757 if (!NT_STATUS_IS_OK(nt_status)) {
758 DEBUG(4,("get_user_groups_from_local_sam failed\n"));
759 free_server_info(server_info);
763 is_guest = (sid_peek_rid(user_sid, &rid) && rid == DOMAIN_USER_RID_GUEST);
765 if (!NT_STATUS_IS_OK(nt_status = create_nt_user_token(user_sid, group_sid,
766 n_groupSIDs, groupSIDs, is_guest,
769 DEBUG(4,("create_nt_user_token failed\n"));
770 SAFE_FREE(groupSIDs);
771 SAFE_FREE(unix_groups);
772 free_server_info(server_info);
776 SAFE_FREE(groupSIDs);
778 (*server_info)->n_groups = n_groupSIDs;
779 (*server_info)->groups = unix_groups;
780 (*server_info)->ptok = token;
785 /***************************************************************************
786 Make (and fill) a user_info struct from a SAM_ACCOUNT
787 ***************************************************************************/
789 NTSTATUS make_server_info_sam(auth_serversupplied_info **server_info,
790 SAM_ACCOUNT *sampass)
795 if (!NT_STATUS_IS_OK(nt_status = make_server_info(server_info)))
798 (*server_info)->sam_account = sampass;
800 if ( !(pwd = getpwnam_alloc(pdb_get_username(sampass))) ) {
801 DEBUG(1, ("User %s in passdb, but getpwnam() fails!\n",
802 pdb_get_username(sampass)));
803 free_server_info(server_info);
804 return NT_STATUS_NO_SUCH_USER;
806 (*server_info)->unix_name = smb_xstrdup(pwd->pw_name);
807 (*server_info)->gid = pwd->pw_gid;
808 (*server_info)->uid = pwd->pw_uid;
812 if (!NT_STATUS_IS_OK(nt_status = add_user_groups(server_info, pdb_get_username(sampass),
815 (*server_info)->gid)))
817 free_server_info(server_info);
821 (*server_info)->sam_fill_level = SAM_FILL_ALL;
822 DEBUG(5,("make_server_info_sam: made server info for user %s -> %s\n",
823 pdb_get_username(sampass),
824 (*server_info)->unix_name));
829 /***************************************************************************
830 Make (and fill) a user_info struct from a 'struct passwd' by conversion
832 ***************************************************************************/
834 NTSTATUS make_server_info_pw(auth_serversupplied_info **server_info,
839 SAM_ACCOUNT *sampass = NULL;
840 if (!NT_STATUS_IS_OK(nt_status = pdb_init_sam_pw(&sampass, pwd))) {
843 if (!NT_STATUS_IS_OK(nt_status = make_server_info(server_info))) {
847 (*server_info)->sam_account = sampass;
849 if (!NT_STATUS_IS_OK(nt_status = add_user_groups(server_info, unix_username,
850 sampass, pwd->pw_uid, pwd->pw_gid)))
855 (*server_info)->unix_name = smb_xstrdup(unix_username);
857 (*server_info)->sam_fill_level = SAM_FILL_ALL;
858 (*server_info)->uid = pwd->pw_uid;
859 (*server_info)->gid = pwd->pw_gid;
863 /***************************************************************************
864 Make (and fill) a user_info struct for a guest login.
865 ***************************************************************************/
867 static NTSTATUS make_new_server_info_guest(auth_serversupplied_info **server_info)
870 SAM_ACCOUNT *sampass = NULL;
873 if (!NT_STATUS_IS_OK(nt_status = pdb_init_sam(&sampass))) {
877 sid_copy(&guest_sid, get_global_sam_sid());
878 sid_append_rid(&guest_sid, DOMAIN_USER_RID_GUEST);
881 if (!pdb_getsampwsid(sampass, &guest_sid)) {
883 return NT_STATUS_NO_SUCH_USER;
887 nt_status = make_server_info_sam(server_info, sampass);
889 if (NT_STATUS_IS_OK(nt_status)) {
890 static const char zeros[16];
891 (*server_info)->guest = True;
893 /* annoying, but the Guest really does have a session key,
894 and it is all zeros! */
895 (*server_info)->user_session_key = data_blob(zeros, sizeof(zeros));
896 (*server_info)->lm_session_key = data_blob(zeros, sizeof(zeros));
902 static auth_serversupplied_info *copy_serverinfo(auth_serversupplied_info *src)
904 auth_serversupplied_info *dst;
906 if (!NT_STATUS_IS_OK(make_server_info(&dst)))
909 dst->guest = src->guest;
912 dst->n_groups = src->n_groups;
913 if (src->n_groups != 0)
914 dst->groups = memdup(src->groups, sizeof(gid_t)*dst->n_groups);
917 dst->ptok = dup_nt_token(src->ptok);
918 dst->user_session_key = data_blob(src->user_session_key.data,
919 src->user_session_key.length);
920 dst->lm_session_key = data_blob(src->lm_session_key.data,
921 src->lm_session_key.length);
922 pdb_copy_sam_account(src->sam_account, &dst->sam_account);
923 dst->pam_handle = NULL;
924 dst->unix_name = smb_xstrdup(src->unix_name);
929 static auth_serversupplied_info *guest_info = NULL;
931 BOOL init_guest_info(void)
933 if (guest_info != NULL)
936 return NT_STATUS_IS_OK(make_new_server_info_guest(&guest_info));
939 NTSTATUS make_server_info_guest(auth_serversupplied_info **server_info)
941 *server_info = copy_serverinfo(guest_info);
942 return (*server_info != NULL) ? NT_STATUS_OK : NT_STATUS_NO_MEMORY;
945 /***************************************************************************
946 Purely internal function for make_server_info_info3
947 Fill the sam account from getpwnam
948 ***************************************************************************/
949 static NTSTATUS fill_sam_account(TALLOC_CTX *mem_ctx,
951 const char *username,
952 char **found_username,
953 uid_t *uid, gid_t *gid,
954 SAM_ACCOUNT **sam_account)
956 fstring dom_user, lower_username;
957 fstring real_username;
958 struct passwd *passwd;
960 fstrcpy( lower_username, username );
961 strlower_m( lower_username );
963 fstr_sprintf(dom_user, "%s%c%s", domain, *lp_winbind_separator(),
966 /* get the passwd struct but don't create the user if he/she
967 does not exist. We were explicitly called from a following
968 a winbindd authentication request so we should assume that
969 nss_winbindd is working */
971 map_username( dom_user );
973 if ( !(passwd = smb_getpwnam( dom_user, real_username, True )) )
974 return NT_STATUS_NO_SUCH_USER;
976 *uid = passwd->pw_uid;
977 *gid = passwd->pw_gid;
979 /* This is pointless -- there is no suport for differing
980 unix and windows names. Make sure to always store the
981 one we actually looked up and succeeded. Have I mentioned
982 why I hate the 'winbind use default domain' parameter?
985 *found_username = talloc_strdup( mem_ctx, real_username );
987 DEBUG(5,("fill_sam_account: located username was [%s]\n",
990 return pdb_init_sam_pw(sam_account, passwd);
993 /****************************************************************************
994 Wrapper to allow the getpwnam() call to strip the domain name and
995 try again in case a local UNIX user is already there. Also run through
996 the username if we fallback to the username only.
997 ****************************************************************************/
999 struct passwd *smb_getpwnam( char *domuser, fstring save_username, BOOL create )
1001 struct passwd *pw = NULL;
1005 /* we only save a copy of the username it has been mangled
1006 by winbindd use default domain */
1008 save_username[0] = '\0';
1010 /* don't call map_username() here since it has to be done higher
1011 up the stack so we don't call it mutliple times */
1013 fstrcpy( username, domuser );
1015 p = strchr_m( username, *lp_winbind_separator() );
1017 /* code for a DOMAIN\user string */
1020 fstring strip_username;
1022 pw = Get_Pwnam( domuser );
1024 /* make sure we get the case of the username correct */
1025 /* work around 'winbind use default domain = yes' */
1027 if ( !strchr_m( pw->pw_name, *lp_winbind_separator() ) ) {
1030 /* split the domain and username into 2 strings */
1034 fstr_sprintf(save_username, "%s%c%s", domain, *lp_winbind_separator(), pw->pw_name);
1037 fstrcpy( save_username, pw->pw_name );
1043 /* setup for lookup of just the username */
1044 /* remember that p and username are overlapping memory */
1047 fstrcpy( strip_username, p );
1048 fstrcpy( username, strip_username );
1051 /* just lookup a plain username */
1053 pw = Get_Pwnam(username);
1055 /* Create local user if requested. */
1057 if ( !pw && create ) {
1058 /* Don't add a machine account. */
1059 if (username[strlen(username)-1] == '$')
1062 auth_add_user_script(NULL, username);
1063 pw = Get_Pwnam(username);
1066 /* one last check for a valid passwd struct */
1069 fstrcpy( save_username, pw->pw_name );
1074 /***************************************************************************
1075 Make a server_info struct from the info3 returned by a domain logon
1076 ***************************************************************************/
1078 NTSTATUS make_server_info_info3(TALLOC_CTX *mem_ctx,
1079 const char *internal_username,
1080 const char *sent_nt_username,
1082 auth_serversupplied_info **server_info,
1083 NET_USER_INFO_3 *info3)
1085 static const char zeros[16];
1087 NTSTATUS nt_status = NT_STATUS_OK;
1088 char *found_username;
1089 const char *nt_domain;
1090 const char *nt_username;
1092 SAM_ACCOUNT *sam_account = NULL;
1100 DOM_SID *lgroupSIDs = NULL;
1102 gid_t *unix_groups = NULL;
1103 NT_USER_TOKEN *token;
1105 DOM_SID *all_group_SIDs;
1109 Here is where we should check the list of
1110 trusted domains, and verify that the SID
1114 sid_copy(&user_sid, &info3->dom_sid.sid);
1115 if (!sid_append_rid(&user_sid, info3->user_rid)) {
1116 return NT_STATUS_INVALID_PARAMETER;
1119 sid_copy(&group_sid, &info3->dom_sid.sid);
1120 if (!sid_append_rid(&group_sid, info3->group_rid)) {
1121 return NT_STATUS_INVALID_PARAMETER;
1124 if (!(nt_username = unistr2_tdup(mem_ctx, &(info3->uni_user_name)))) {
1125 /* If the server didn't give us one, just use the one we sent them */
1126 nt_username = sent_nt_username;
1129 if (!(nt_domain = unistr2_tdup(mem_ctx, &(info3->uni_logon_dom)))) {
1130 /* If the server didn't give us one, just use the one we sent them */
1134 /* try to fill the SAM account.. If getpwnam() fails, then try the
1135 add user script (2.2.x behavior).
1137 We use the _unmapped_ username here in an attempt to provide
1138 consistent username mapping behavior between kerberos and NTLM[SSP]
1139 authentication in domain mode security. I.E. Username mapping should
1140 be applied to the fully qualified username (e.g. DOMAIN\user) and
1141 no just the login name. Yes this mean swe called map_username()
1142 unnecessarily in make_user_info_map() but that is how the current
1143 code is designed. Making the change here is the least disruptive
1146 nt_status = fill_sam_account(mem_ctx, nt_domain, sent_nt_username,
1147 &found_username, &uid, &gid, &sam_account);
1149 if (NT_STATUS_EQUAL(nt_status, NT_STATUS_NO_SUCH_USER)) {
1150 DEBUG(3,("User %s does not exist, trying to add it\n", internal_username));
1151 auth_add_user_script( nt_domain, sent_nt_username );
1152 nt_status = fill_sam_account( mem_ctx, nt_domain, sent_nt_username,
1153 &found_username, &uid, &gid, &sam_account );
1156 if (!NT_STATUS_IS_OK(nt_status)) {
1157 DEBUG(0, ("make_server_info_info3: pdb_init_sam failed!\n"));
1161 if (!pdb_set_nt_username(sam_account, nt_username, PDB_CHANGED)) {
1162 pdb_free_sam(&sam_account);
1163 return NT_STATUS_NO_MEMORY;
1166 if (!pdb_set_username(sam_account, nt_username, PDB_CHANGED)) {
1167 pdb_free_sam(&sam_account);
1168 return NT_STATUS_NO_MEMORY;
1171 if (!pdb_set_domain(sam_account, nt_domain, PDB_CHANGED)) {
1172 pdb_free_sam(&sam_account);
1173 return NT_STATUS_NO_MEMORY;
1176 if (!pdb_set_user_sid(sam_account, &user_sid, PDB_CHANGED)) {
1177 pdb_free_sam(&sam_account);
1178 return NT_STATUS_UNSUCCESSFUL;
1181 if (!pdb_set_group_sid(sam_account, &group_sid, PDB_CHANGED)) {
1182 pdb_free_sam(&sam_account);
1183 return NT_STATUS_UNSUCCESSFUL;
1186 if (!pdb_set_fullname(sam_account, unistr2_static(&(info3->uni_full_name)),
1188 pdb_free_sam(&sam_account);
1189 return NT_STATUS_NO_MEMORY;
1192 if (!pdb_set_logon_script(sam_account, unistr2_static(&(info3->uni_logon_script)), PDB_CHANGED)) {
1193 pdb_free_sam(&sam_account);
1194 return NT_STATUS_NO_MEMORY;
1197 if (!pdb_set_profile_path(sam_account, unistr2_static(&(info3->uni_profile_path)), PDB_CHANGED)) {
1198 pdb_free_sam(&sam_account);
1199 return NT_STATUS_NO_MEMORY;
1202 if (!pdb_set_homedir(sam_account, unistr2_static(&(info3->uni_home_dir)), PDB_CHANGED)) {
1203 pdb_free_sam(&sam_account);
1204 return NT_STATUS_NO_MEMORY;
1207 if (!pdb_set_dir_drive(sam_account, unistr2_static(&(info3->uni_dir_drive)), PDB_CHANGED)) {
1208 pdb_free_sam(&sam_account);
1209 return NT_STATUS_NO_MEMORY;
1212 if (!NT_STATUS_IS_OK(nt_status = make_server_info(server_info))) {
1213 DEBUG(4, ("make_server_info failed!\n"));
1214 pdb_free_sam(&sam_account);
1218 /* save this here to _net_sam_logon() doesn't fail (it assumes a
1219 valid SAM_ACCOUNT) */
1221 (*server_info)->sam_account = sam_account;
1223 (*server_info)->unix_name = smb_xstrdup(found_username);
1225 /* Fill in the unix info we found on the way */
1227 (*server_info)->sam_fill_level = SAM_FILL_ALL;
1228 (*server_info)->uid = uid;
1229 (*server_info)->gid = gid;
1231 /* Store the user group information in the server_info
1232 returned to the caller. */
1234 nt_status = get_user_groups((*server_info)->unix_name,
1235 uid, gid, &n_lgroupSIDs, &lgroupSIDs, &unix_groups);
1237 if ( !NT_STATUS_IS_OK(nt_status) ) {
1238 DEBUG(4,("get_user_groups failed\n"));
1242 (*server_info)->groups = unix_groups;
1243 (*server_info)->n_groups = n_lgroupSIDs;
1245 /* Create a 'combined' list of all SIDs we might want in the SD */
1247 all_group_SIDs = SMB_MALLOC_ARRAY(DOM_SID,info3->num_groups2 + info3->num_other_sids + n_lgroupSIDs);
1249 if (!all_group_SIDs) {
1250 DEBUG(0, ("malloc() failed for DOM_SID list!\n"));
1251 SAFE_FREE(lgroupSIDs);
1252 free_server_info(server_info);
1253 return NT_STATUS_NO_MEMORY;
1256 /* and create (by appending rids) the 'domain' sids */
1258 for (i = 0; i < info3->num_groups2; i++) {
1260 sid_copy(&all_group_SIDs[i], &(info3->dom_sid.sid));
1262 if (!sid_append_rid(&all_group_SIDs[i], info3->gids[i].g_rid)) {
1264 nt_status = NT_STATUS_INVALID_PARAMETER;
1266 DEBUG(3,("could not append additional group rid 0x%x\n",
1267 info3->gids[i].g_rid));
1269 SAFE_FREE(lgroupSIDs);
1270 SAFE_FREE(all_group_SIDs);
1271 free_server_info(server_info);
1278 /* Copy 'other' sids. We need to do sid filtering here to
1279 prevent possible elevation of privileges. See:
1281 http://www.microsoft.com/windows2000/techinfo/administration/security/sidfilter.asp
1284 for (i = 0; i < info3->num_other_sids; i++) {
1285 sid_copy(&all_group_SIDs[info3->num_groups2 + i],
1286 &info3->other_sids[i].sid);
1290 /* add local alias sids */
1292 for (i = 0; i < n_lgroupSIDs; i++) {
1293 sid_copy(&all_group_SIDs[info3->num_groups2 +
1294 info3->num_other_sids + i],
1298 /* Where are the 'global' sids... */
1300 /* can the user be guest? if yes, where is it stored? */
1302 nt_status = create_nt_user_token(&user_sid, &group_sid,
1303 info3->num_groups2 + info3->num_other_sids + n_lgroupSIDs,
1304 all_group_SIDs, False, &token);
1306 if ( !NT_STATUS_IS_OK(nt_status) ) {
1307 DEBUG(4,("create_nt_user_token failed\n"));
1308 SAFE_FREE(lgroupSIDs);
1309 SAFE_FREE(all_group_SIDs);
1310 free_server_info(server_info);
1314 (*server_info)->ptok = token;
1316 SAFE_FREE(lgroupSIDs);
1317 SAFE_FREE(all_group_SIDs);
1319 /* ensure we are never given NULL session keys */
1321 if (memcmp(info3->user_sess_key, zeros, sizeof(zeros)) == 0) {
1322 (*server_info)->user_session_key = data_blob(NULL, 0);
1324 (*server_info)->user_session_key = data_blob(info3->user_sess_key, sizeof(info3->user_sess_key));
1327 if (memcmp(info3->lm_sess_key, zeros, 8) == 0) {
1328 (*server_info)->lm_session_key = data_blob(NULL, 0);
1330 (*server_info)->lm_session_key = data_blob(info3->lm_sess_key, sizeof(info3->lm_sess_key));
1333 return NT_STATUS_OK;
1336 /***************************************************************************
1337 Free a user_info struct
1338 ***************************************************************************/
1340 void free_user_info(auth_usersupplied_info **user_info)
1342 DEBUG(5,("attempting to free (and zero) a user_info structure\n"));
1343 if (*user_info != NULL) {
1344 if ((*user_info)->smb_name.str) {
1345 DEBUG(10,("structure was created for %s\n", (*user_info)->smb_name.str));
1347 SAFE_FREE((*user_info)->smb_name.str);
1348 SAFE_FREE((*user_info)->internal_username.str);
1349 SAFE_FREE((*user_info)->client_domain.str);
1350 SAFE_FREE((*user_info)->domain.str);
1351 SAFE_FREE((*user_info)->wksta_name.str);
1352 data_blob_free(&(*user_info)->lm_resp);
1353 data_blob_free(&(*user_info)->nt_resp);
1354 data_blob_clear_free(&(*user_info)->lm_interactive_pwd);
1355 data_blob_clear_free(&(*user_info)->nt_interactive_pwd);
1356 data_blob_clear_free(&(*user_info)->plaintext_password);
1357 ZERO_STRUCT(**user_info);
1359 SAFE_FREE(*user_info);
1362 /***************************************************************************
1363 Clear out a server_info struct that has been allocated
1364 ***************************************************************************/
1366 void free_server_info(auth_serversupplied_info **server_info)
1368 DEBUG(5,("attempting to free (and zero) a server_info structure\n"));
1369 if (*server_info != NULL) {
1370 pdb_free_sam(&(*server_info)->sam_account);
1372 /* call pam_end here, unless we know we are keeping it */
1373 delete_nt_token( &(*server_info)->ptok );
1374 SAFE_FREE((*server_info)->groups);
1375 SAFE_FREE((*server_info)->unix_name);
1376 data_blob_free(&(*server_info)->lm_session_key);
1377 data_blob_free(&(*server_info)->user_session_key);
1378 ZERO_STRUCT(**server_info);
1380 SAFE_FREE(*server_info);
1383 /***************************************************************************
1384 Make an auth_methods struct
1385 ***************************************************************************/
1387 BOOL make_auth_methods(struct auth_context *auth_context, auth_methods **auth_method)
1389 if (!auth_context) {
1390 smb_panic("no auth_context supplied to make_auth_methods()!\n");
1394 smb_panic("make_auth_methods: pointer to auth_method pointer is NULL!\n");
1397 *auth_method = TALLOC_P(auth_context->mem_ctx, auth_methods);
1398 if (!*auth_method) {
1399 DEBUG(0,("make_auth_method: malloc failed!\n"));
1402 ZERO_STRUCTP(*auth_method);
1407 /****************************************************************************
1409 ****************************************************************************/
1411 void delete_nt_token(NT_USER_TOKEN **pptoken)
1414 NT_USER_TOKEN *ptoken = *pptoken;
1415 SAFE_FREE( ptoken->user_sids );
1416 ZERO_STRUCTP(ptoken);
1418 SAFE_FREE(*pptoken);
1421 /****************************************************************************
1422 Duplicate a SID token.
1423 ****************************************************************************/
1425 NT_USER_TOKEN *dup_nt_token(NT_USER_TOKEN *ptoken)
1427 NT_USER_TOKEN *token;
1432 if ((token = SMB_MALLOC_P(NT_USER_TOKEN)) == NULL)
1435 ZERO_STRUCTP(token);
1437 if ((token->user_sids = (DOM_SID *)memdup( ptoken->user_sids, sizeof(DOM_SID) * ptoken->num_sids )) == NULL) {
1442 token->num_sids = ptoken->num_sids;
1448 * Verify whether or not given domain is trusted.
1450 * @param domain_name name of the domain to be verified
1451 * @return true if domain is one of the trusted once or
1452 * false if otherwise
1455 BOOL is_trusted_domain(const char* dom_name)
1457 DOM_SID trustdom_sid;
1462 /* no trusted domains for a standalone server */
1464 if ( lp_server_role() == ROLE_STANDALONE )
1467 /* if we are a DC, then check for a direct trust relationships */
1471 DEBUG (5,("is_trusted_domain: Checking for domain trust with [%s]\n",
1473 ret = secrets_fetch_trusted_domain_password(dom_name, &pass, &trustdom_sid, &lct);
1480 /* if winbindd is not up and we are a domain member) then we need to update the
1481 trustdom_cache ourselves */
1483 if ( !winbind_ping() )
1484 update_trustdom_cache();
1487 /* now the trustdom cache should be available a DC could still
1488 * have a transitive trust so fall back to the cache of trusted
1489 * domains (like a domain member would use */
1491 if ( trustdom_cache_fetch(dom_name, &trustdom_sid) ) {