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 Copyright (C) Volker Lendecke 2006
10 This program is free software; you can redistribute it and/or modify
11 it under the terms of the GNU General Public License as published by
12 the Free Software Foundation; either version 2 of the License, or
13 (at your option) any later version.
15 This program is distributed in the hope that it will be useful,
16 but WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 GNU General Public License for more details.
20 You should have received a copy of the GNU General Public License
21 along with this program; if not, write to the Free Software
22 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
28 #define DBGC_CLASS DBGC_AUTH
30 static struct nt_user_token *create_local_nt_token(TALLOC_CTX *mem_ctx,
31 const DOM_SID *user_sid,
34 const DOM_SID *groupsids);
36 /****************************************************************************
37 Create a UNIX user on demand.
38 ****************************************************************************/
40 static int smb_create_user(const char *domain, const char *unix_username, const char *homedir)
45 pstrcpy(add_script, lp_adduser_script());
48 all_string_sub(add_script, "%u", unix_username, sizeof(pstring));
50 all_string_sub(add_script, "%D", domain, sizeof(pstring));
52 all_string_sub(add_script, "%H", homedir, sizeof(pstring));
53 ret = smbrun(add_script,NULL);
55 DEBUG(ret ? 0 : 3,("smb_create_user: Running the command `%s' gave %d\n",add_script,ret));
59 /****************************************************************************
60 Create an auth_usersupplied_data structure
61 ****************************************************************************/
63 static NTSTATUS make_user_info(auth_usersupplied_info **user_info,
65 const char *internal_username,
66 const char *client_domain,
68 const char *wksta_name,
69 DATA_BLOB *lm_pwd, DATA_BLOB *nt_pwd,
70 DATA_BLOB *lm_interactive_pwd, DATA_BLOB *nt_interactive_pwd,
75 DEBUG(5,("attempting to make a user_info for %s (%s)\n", internal_username, smb_name));
77 *user_info = SMB_MALLOC_P(auth_usersupplied_info);
78 if (*user_info == NULL) {
79 DEBUG(0,("malloc failed for user_info (size %lu)\n", (unsigned long)sizeof(*user_info)));
80 return NT_STATUS_NO_MEMORY;
83 ZERO_STRUCTP(*user_info);
85 DEBUG(5,("making strings for %s's user_info struct\n", internal_username));
87 (*user_info)->smb_name = SMB_STRDUP(smb_name);
88 if ((*user_info)->smb_name == NULL) {
89 free_user_info(user_info);
90 return NT_STATUS_NO_MEMORY;
93 (*user_info)->internal_username = SMB_STRDUP(internal_username);
94 if ((*user_info)->internal_username == NULL) {
95 free_user_info(user_info);
96 return NT_STATUS_NO_MEMORY;
99 (*user_info)->domain = SMB_STRDUP(domain);
100 if ((*user_info)->domain == NULL) {
101 free_user_info(user_info);
102 return NT_STATUS_NO_MEMORY;
105 (*user_info)->client_domain = SMB_STRDUP(client_domain);
106 if ((*user_info)->client_domain == NULL) {
107 free_user_info(user_info);
108 return NT_STATUS_NO_MEMORY;
111 (*user_info)->wksta_name = SMB_STRDUP(wksta_name);
112 if ((*user_info)->wksta_name == NULL) {
113 free_user_info(user_info);
114 return NT_STATUS_NO_MEMORY;
117 DEBUG(5,("making blobs for %s's user_info struct\n", internal_username));
120 (*user_info)->lm_resp = data_blob(lm_pwd->data, lm_pwd->length);
122 (*user_info)->nt_resp = data_blob(nt_pwd->data, nt_pwd->length);
123 if (lm_interactive_pwd)
124 (*user_info)->lm_interactive_pwd = data_blob(lm_interactive_pwd->data, lm_interactive_pwd->length);
125 if (nt_interactive_pwd)
126 (*user_info)->nt_interactive_pwd = data_blob(nt_interactive_pwd->data, nt_interactive_pwd->length);
129 (*user_info)->plaintext_password = data_blob(plaintext->data, plaintext->length);
131 (*user_info)->encrypted = encrypted;
133 (*user_info)->logon_parameters = 0;
135 DEBUG(10,("made an %sencrypted user_info for %s (%s)\n", encrypted ? "":"un" , internal_username, smb_name));
140 /****************************************************************************
141 Create an auth_usersupplied_data structure after appropriate mapping.
142 ****************************************************************************/
144 NTSTATUS make_user_info_map(auth_usersupplied_info **user_info,
145 const char *smb_name,
146 const char *client_domain,
147 const char *wksta_name,
148 DATA_BLOB *lm_pwd, DATA_BLOB *nt_pwd,
149 DATA_BLOB *lm_interactive_pwd, DATA_BLOB *nt_interactive_pwd,
150 DATA_BLOB *plaintext,
156 fstring internal_username;
157 fstrcpy(internal_username, smb_name);
158 was_mapped = map_username(internal_username);
160 DEBUG(5, ("make_user_info_map: Mapping user [%s]\\[%s] from workstation [%s]\n",
161 client_domain, smb_name, wksta_name));
163 /* don't allow "" as a domain, fixes a Win9X bug
164 where it doens't supply a domain for logon script
165 'net use' commands. */
167 if ( *client_domain )
168 domain = client_domain;
170 domain = lp_workgroup();
172 /* do what win2k does. Always map unknown domains to our own
173 and let the "passdb backend" handle unknown users. */
175 if ( !is_trusted_domain(domain) && !strequal(domain, get_global_sam_name()) )
176 domain = my_sam_name();
178 /* we know that it is a trusted domain (and we are allowing them) or it is our domain */
180 result = make_user_info(user_info, smb_name, internal_username,
181 client_domain, domain, wksta_name,
183 lm_interactive_pwd, nt_interactive_pwd,
184 plaintext, encrypted);
185 if (NT_STATUS_IS_OK(result)) {
186 (*user_info)->was_mapped = was_mapped;
191 /****************************************************************************
192 Create an auth_usersupplied_data, making the DATA_BLOBs here.
193 Decrypt and encrypt the passwords.
194 ****************************************************************************/
196 BOOL make_user_info_netlogon_network(auth_usersupplied_info **user_info,
197 const char *smb_name,
198 const char *client_domain,
199 const char *wksta_name,
200 uint32 logon_parameters,
201 const uchar *lm_network_pwd,
203 const uchar *nt_network_pwd,
208 DATA_BLOB lm_blob = data_blob(lm_network_pwd, lm_pwd_len);
209 DATA_BLOB nt_blob = data_blob(nt_network_pwd, nt_pwd_len);
211 status = make_user_info_map(user_info,
212 smb_name, client_domain,
214 lm_pwd_len ? &lm_blob : NULL,
215 nt_pwd_len ? &nt_blob : NULL,
219 if (NT_STATUS_IS_OK(status)) {
220 (*user_info)->logon_parameters = logon_parameters;
222 ret = NT_STATUS_IS_OK(status) ? True : False;
224 data_blob_free(&lm_blob);
225 data_blob_free(&nt_blob);
229 /****************************************************************************
230 Create an auth_usersupplied_data, making the DATA_BLOBs here.
231 Decrypt and encrypt the passwords.
232 ****************************************************************************/
234 BOOL make_user_info_netlogon_interactive(auth_usersupplied_info **user_info,
235 const char *smb_name,
236 const char *client_domain,
237 const char *wksta_name,
238 uint32 logon_parameters,
240 const uchar lm_interactive_pwd[16],
241 const uchar nt_interactive_pwd[16],
242 const uchar *dc_sess_key)
246 unsigned char local_lm_response[24];
247 unsigned char local_nt_response[24];
248 unsigned char key[16];
251 memcpy(key, dc_sess_key, 8);
253 if (lm_interactive_pwd)
254 memcpy(lm_pwd, lm_interactive_pwd, sizeof(lm_pwd));
256 if (nt_interactive_pwd)
257 memcpy(nt_pwd, nt_interactive_pwd, sizeof(nt_pwd));
259 #ifdef DEBUG_PASSWORD
261 dump_data(100, (char *)key, sizeof(key));
263 DEBUG(100,("lm owf password:"));
264 dump_data(100, lm_pwd, sizeof(lm_pwd));
266 DEBUG(100,("nt owf password:"));
267 dump_data(100, nt_pwd, sizeof(nt_pwd));
270 if (lm_interactive_pwd)
271 SamOEMhash((uchar *)lm_pwd, key, sizeof(lm_pwd));
273 if (nt_interactive_pwd)
274 SamOEMhash((uchar *)nt_pwd, key, sizeof(nt_pwd));
276 #ifdef DEBUG_PASSWORD
277 DEBUG(100,("decrypt of lm owf password:"));
278 dump_data(100, lm_pwd, sizeof(lm_pwd));
280 DEBUG(100,("decrypt of nt owf password:"));
281 dump_data(100, nt_pwd, sizeof(nt_pwd));
284 if (lm_interactive_pwd)
285 SMBOWFencrypt((const unsigned char *)lm_pwd, chal,
288 if (nt_interactive_pwd)
289 SMBOWFencrypt((const unsigned char *)nt_pwd, chal,
292 /* Password info paranoia */
298 DATA_BLOB local_lm_blob;
299 DATA_BLOB local_nt_blob;
301 DATA_BLOB lm_interactive_blob;
302 DATA_BLOB nt_interactive_blob;
304 if (lm_interactive_pwd) {
305 local_lm_blob = data_blob(local_lm_response,
306 sizeof(local_lm_response));
307 lm_interactive_blob = data_blob(lm_pwd,
312 if (nt_interactive_pwd) {
313 local_nt_blob = data_blob(local_nt_response,
314 sizeof(local_nt_response));
315 nt_interactive_blob = data_blob(nt_pwd,
320 nt_status = make_user_info_map(
322 smb_name, client_domain, wksta_name,
323 lm_interactive_pwd ? &local_lm_blob : NULL,
324 nt_interactive_pwd ? &local_nt_blob : NULL,
325 lm_interactive_pwd ? &lm_interactive_blob : NULL,
326 nt_interactive_pwd ? &nt_interactive_blob : NULL,
329 if (NT_STATUS_IS_OK(nt_status)) {
330 (*user_info)->logon_parameters = logon_parameters;
333 ret = NT_STATUS_IS_OK(nt_status) ? True : False;
334 data_blob_free(&local_lm_blob);
335 data_blob_free(&local_nt_blob);
336 data_blob_free(&lm_interactive_blob);
337 data_blob_free(&nt_interactive_blob);
343 /****************************************************************************
344 Create an auth_usersupplied_data structure
345 ****************************************************************************/
347 BOOL make_user_info_for_reply(auth_usersupplied_info **user_info,
348 const char *smb_name,
349 const char *client_domain,
351 DATA_BLOB plaintext_password)
354 DATA_BLOB local_lm_blob;
355 DATA_BLOB local_nt_blob;
356 NTSTATUS ret = NT_STATUS_UNSUCCESSFUL;
359 * Not encrypted - do so.
362 DEBUG(5,("make_user_info_for_reply: User passwords not in encrypted "
365 if (plaintext_password.data) {
366 unsigned char local_lm_response[24];
368 #ifdef DEBUG_PASSWORD
369 DEBUG(10,("Unencrypted password (len %d):\n",
370 (int)plaintext_password.length));
371 dump_data(100, (const char *)plaintext_password.data,
372 plaintext_password.length);
375 SMBencrypt( (const char *)plaintext_password.data,
376 (const uchar*)chal, local_lm_response);
377 local_lm_blob = data_blob(local_lm_response, 24);
379 /* We can't do an NT hash here, as the password needs to be
381 local_nt_blob = data_blob(NULL, 0);
384 local_lm_blob = data_blob(NULL, 0);
385 local_nt_blob = data_blob(NULL, 0);
388 ret = make_user_info_map(
389 user_info, smb_name, client_domain,
390 get_remote_machine_name(),
391 local_lm_blob.data ? &local_lm_blob : NULL,
392 local_nt_blob.data ? &local_nt_blob : NULL,
394 plaintext_password.data ? &plaintext_password : NULL,
397 data_blob_free(&local_lm_blob);
398 return NT_STATUS_IS_OK(ret) ? True : False;
401 /****************************************************************************
402 Create an auth_usersupplied_data structure
403 ****************************************************************************/
405 NTSTATUS make_user_info_for_reply_enc(auth_usersupplied_info **user_info,
406 const char *smb_name,
407 const char *client_domain,
408 DATA_BLOB lm_resp, DATA_BLOB nt_resp)
410 return make_user_info_map(user_info, smb_name,
412 get_remote_machine_name(),
413 lm_resp.data ? &lm_resp : NULL,
414 nt_resp.data ? &nt_resp : NULL,
419 /****************************************************************************
420 Create a guest user_info blob, for anonymous authenticaion.
421 ****************************************************************************/
423 BOOL make_user_info_guest(auth_usersupplied_info **user_info)
427 nt_status = make_user_info(user_info,
436 return NT_STATUS_IS_OK(nt_status) ? True : False;
439 /****************************************************************************
440 prints a NT_USER_TOKEN to debug output.
441 ****************************************************************************/
443 void debug_nt_user_token(int dbg_class, int dbg_lev, NT_USER_TOKEN *token)
448 DEBUGC(dbg_class, dbg_lev, ("NT user token: (NULL)\n"));
452 DEBUGC(dbg_class, dbg_lev,
453 ("NT user token of user %s\n",
454 sid_string_static(&token->user_sids[0]) ));
455 DEBUGADDC(dbg_class, dbg_lev,
456 ("contains %lu SIDs\n", (unsigned long)token->num_sids));
457 for (i = 0; i < token->num_sids; i++)
458 DEBUGADDC(dbg_class, dbg_lev,
459 ("SID[%3lu]: %s\n", (unsigned long)i,
460 sid_string_static(&token->user_sids[i])));
462 dump_se_priv( dbg_class, dbg_lev, &token->privileges );
465 /****************************************************************************
466 prints a UNIX 'token' to debug output.
467 ****************************************************************************/
469 void debug_unix_user_token(int dbg_class, int dbg_lev, uid_t uid, gid_t gid,
470 int n_groups, gid_t *groups)
473 DEBUGC(dbg_class, dbg_lev,
474 ("UNIX token of user %ld\n", (long int)uid));
476 DEBUGADDC(dbg_class, dbg_lev,
477 ("Primary group is %ld and contains %i supplementary "
478 "groups\n", (long int)gid, n_groups));
479 for (i = 0; i < n_groups; i++)
480 DEBUGADDC(dbg_class, dbg_lev, ("Group[%3i]: %ld\n", i,
481 (long int)groups[i]));
484 /******************************************************************************
485 Create a token for the root user to be used internally by smbd.
486 This is similar to running under the context of the LOCAL_SYSTEM account
487 in Windows. This is a read-only token. Do not modify it or free() it.
488 Create a copy if your need to change it.
489 ******************************************************************************/
491 NT_USER_TOKEN *get_root_nt_token( void )
493 static NT_USER_TOKEN *token = NULL;
494 DOM_SID u_sid, g_sid;
500 if ( !(pw = sys_getpwnam( "root" )) ) {
501 DEBUG(0,("get_root_nt_token: getpwnam\"root\") failed!\n"));
505 /* get the user and primary group SIDs; although the
506 BUILTIN\Administrators SId is really the one that matters here */
508 uid_to_sid(&u_sid, pw->pw_uid);
509 gid_to_sid(&g_sid, pw->pw_gid);
511 token = create_local_nt_token(NULL, &u_sid, False,
512 1, &global_sid_Builtin_Administrators);
516 static int server_info_dtor(auth_serversupplied_info *server_info)
518 TALLOC_FREE(server_info->sam_account);
519 ZERO_STRUCTP(server_info);
523 /***************************************************************************
524 Make a server_info struct. Free with TALLOC_FREE().
525 ***************************************************************************/
527 static auth_serversupplied_info *make_server_info(TALLOC_CTX *mem_ctx)
529 struct auth_serversupplied_info *result;
531 result = TALLOC_ZERO_P(mem_ctx, auth_serversupplied_info);
532 if (result == NULL) {
533 DEBUG(0, ("talloc failed\n"));
537 talloc_set_destructor(result, server_info_dtor);
539 /* Initialise the uid and gid values to something non-zero
540 which may save us from giving away root access if there
541 is a bug in allocating these fields. */
548 /***************************************************************************
549 Make (and fill) a user_info struct from a struct samu
550 ***************************************************************************/
552 NTSTATUS make_server_info_sam(auth_serversupplied_info **server_info,
553 struct samu *sampass)
558 auth_serversupplied_info *result;
561 DOM_SID unix_group_sid;
564 if ( !(pwd = getpwnam_alloc(NULL, pdb_get_username(sampass))) ) {
565 DEBUG(1, ("User %s in passdb, but getpwnam() fails!\n",
566 pdb_get_username(sampass)));
567 return NT_STATUS_NO_SUCH_USER;
570 if ( !(result = make_server_info(NULL)) ) {
572 return NT_STATUS_NO_MEMORY;
575 result->sam_account = sampass;
576 result->unix_name = talloc_strdup(result, pwd->pw_name);
577 result->gid = pwd->pw_gid;
578 result->uid = pwd->pw_uid;
582 status = pdb_enum_group_memberships(result, sampass,
583 &result->sids, &gids,
586 if (!NT_STATUS_IS_OK(status)) {
587 DEBUG(10, ("pdb_enum_group_memberships failed: %s\n",
589 result->sam_account = NULL; /* Don't free on error exit. */
594 /* Add the "Unix Group" SID for each gid to catch mapped groups
595 and their Unix equivalent. This is to solve the backwards
596 compatibility problem of 'valid users = +ntadmin' where
597 ntadmin has been paired with "Domain Admins" in the group
598 mapping table. Otherwise smb.conf would need to be changed
599 to 'valid user = "Domain Admins"'. --jerry */
601 num_gids = result->num_sids;
602 for ( i=0; i<num_gids; i++ ) {
603 if ( !gid_to_unix_groups_sid( gids[i], &unix_group_sid ) ) {
604 DEBUG(1,("make_server_info_sam: Failed to create SID "
605 "for gid %d!\n", gids[i]));
608 if (!add_sid_to_array_unique( result, &unix_group_sid,
609 &result->sids, &result->num_sids )) {
610 result->sam_account = NULL; /* Don't free on error exit. */
612 return NT_STATUS_NO_MEMORY;
616 /* For now we throw away the gids and convert via sid_to_gid
617 * later. This needs fixing, but I'd like to get the code straight and
622 DEBUG(5,("make_server_info_sam: made server info for user %s -> %s\n",
623 pdb_get_username(sampass), result->unix_name));
625 *server_info = result;
631 * Add alias SIDs from memberships within the partially created token SID list
634 static NTSTATUS add_aliases(const DOM_SID *domain_sid,
635 struct nt_user_token *token)
638 size_t i, num_aliases;
642 if (!(tmp_ctx = talloc_init("add_aliases"))) {
643 return NT_STATUS_NO_MEMORY;
649 status = pdb_enum_alias_memberships(tmp_ctx, domain_sid,
652 &aliases, &num_aliases);
654 if (!NT_STATUS_IS_OK(status)) {
655 DEBUG(10, ("pdb_enum_alias_memberships failed: %s\n",
657 TALLOC_FREE(tmp_ctx);
661 for (i=0; i<num_aliases; i++) {
663 sid_compose(&alias_sid, domain_sid, aliases[i]);
664 if (!add_sid_to_array_unique(token, &alias_sid,
667 DEBUG(0, ("add_sid_to_array failed\n"));
668 TALLOC_FREE(tmp_ctx);
669 return NT_STATUS_NO_MEMORY;
673 TALLOC_FREE(tmp_ctx);
677 static NTSTATUS log_nt_token(TALLOC_CTX *tmp_ctx, NT_USER_TOKEN *token)
683 if ((lp_log_nt_token_command() == NULL) ||
684 (strlen(lp_log_nt_token_command()) == 0)) {
688 group_sidstr = talloc_strdup(tmp_ctx, "");
689 for (i=1; i<token->num_sids; i++) {
690 group_sidstr = talloc_asprintf(
691 tmp_ctx, "%s %s", group_sidstr,
692 sid_string_static(&token->user_sids[i]));
695 command = talloc_string_sub(
696 tmp_ctx, lp_log_nt_token_command(),
697 "%s", sid_string_static(&token->user_sids[0]));
698 command = talloc_string_sub(tmp_ctx, command, "%t", group_sidstr);
700 if (command == NULL) {
701 return NT_STATUS_NO_MEMORY;
704 DEBUG(8, ("running command: [%s]\n", command));
705 if (smbrun(command, NULL) != 0) {
706 DEBUG(0, ("Could not log NT token\n"));
707 return NT_STATUS_ACCESS_DENIED;
713 /*******************************************************************
714 *******************************************************************/
716 static NTSTATUS add_builtin_administrators( struct nt_user_token *token )
720 /* nothing to do if we aren't in a domain */
722 if ( !(IS_DC || lp_server_role()==ROLE_DOMAIN_MEMBER) ) {
726 /* Find the Domain Admins SID */
729 sid_copy( &domadm, get_global_sam_sid() );
731 if ( !secrets_fetch_domain_sid( lp_workgroup(), &domadm ) )
732 return NT_STATUS_CANT_ACCESS_DOMAIN_INFO;
734 sid_append_rid( &domadm, DOMAIN_GROUP_RID_ADMINS );
736 /* Add Administrators if the user beloongs to Domain Admins */
738 if ( nt_token_check_sid( &domadm, token ) ) {
739 if (!add_sid_to_array(token, &global_sid_Builtin_Administrators,
740 &token->user_sids, &token->num_sids)) {
741 return NT_STATUS_NO_MEMORY;
748 /*******************************************************************
749 *******************************************************************/
751 static NTSTATUS create_builtin_users( void )
756 status = pdb_create_builtin_alias( BUILTIN_ALIAS_RID_USERS );
757 if ( !NT_STATUS_IS_OK(status) ) {
758 DEBUG(0,("create_builtin_users: Failed to create Users\n"));
762 /* add domain users */
763 if ((IS_DC || (lp_server_role() == ROLE_DOMAIN_MEMBER))
764 && secrets_fetch_domain_sid(lp_workgroup(), &dom_users))
766 sid_append_rid(&dom_users, DOMAIN_GROUP_RID_USERS );
767 status = pdb_add_aliasmem( &global_sid_Builtin_Users, &dom_users);
768 if ( !NT_STATUS_IS_OK(status) ) {
769 DEBUG(0,("create_builtin_administrators: Failed to add Domain Users to"
778 /*******************************************************************
779 *******************************************************************/
781 static NTSTATUS create_builtin_administrators( void )
784 DOM_SID dom_admins, root_sid;
786 enum lsa_SidType type;
790 status = pdb_create_builtin_alias( BUILTIN_ALIAS_RID_ADMINS );
791 if ( !NT_STATUS_IS_OK(status) ) {
792 DEBUG(0,("create_builtin_administrators: Failed to create Administrators\n"));
796 /* add domain admins */
797 if ((IS_DC || (lp_server_role() == ROLE_DOMAIN_MEMBER))
798 && secrets_fetch_domain_sid(lp_workgroup(), &dom_admins))
800 sid_append_rid(&dom_admins, DOMAIN_GROUP_RID_ADMINS);
801 status = pdb_add_aliasmem( &global_sid_Builtin_Administrators, &dom_admins );
802 if ( !NT_STATUS_IS_OK(status) ) {
803 DEBUG(0,("create_builtin_administrators: Failed to add Domain Admins"
804 " Administrators\n"));
810 if ( (ctx = talloc_init("create_builtin_administrators")) == NULL ) {
811 return NT_STATUS_NO_MEMORY;
813 fstr_sprintf( root_name, "%s\\root", get_global_sam_name() );
814 ret = lookup_name( ctx, root_name, 0, NULL, NULL, &root_sid, &type );
818 status = pdb_add_aliasmem( &global_sid_Builtin_Administrators, &root_sid );
819 if ( !NT_STATUS_IS_OK(status) ) {
820 DEBUG(0,("create_builtin_administrators: Failed to add root"
821 " Administrators\n"));
829 /*******************************************************************
830 Create a NT token for the user, expanding local aliases
831 *******************************************************************/
833 static struct nt_user_token *create_local_nt_token(TALLOC_CTX *mem_ctx,
834 const DOM_SID *user_sid,
837 const DOM_SID *groupsids)
839 struct nt_user_token *result = NULL;
844 if (!(result = TALLOC_ZERO_P(mem_ctx, NT_USER_TOKEN))) {
845 DEBUG(0, ("talloc failed\n"));
849 /* Add the user and primary group sid */
851 if (!add_sid_to_array(result, user_sid,
852 &result->user_sids, &result->num_sids)) {
856 /* For guest, num_groupsids may be zero. */
858 if (!add_sid_to_array(result, &groupsids[0],
859 &result->user_sids, &result->num_sids)) {
864 /* Add in BUILTIN sids */
866 if (!add_sid_to_array(result, &global_sid_World,
867 &result->user_sids, &result->num_sids)) {
870 if (!add_sid_to_array(result, &global_sid_Network,
871 &result->user_sids, &result->num_sids)) {
876 if (!add_sid_to_array(result, &global_sid_Builtin_Guests,
877 &result->user_sids, &result->num_sids)) {
881 if (!add_sid_to_array(result, &global_sid_Authenticated_Users,
882 &result->user_sids, &result->num_sids)) {
887 /* Now the SIDs we got from authentication. These are the ones from
888 * the info3 struct or from the pdb_enum_group_memberships, depending
889 * on who authenticated the user.
890 * Note that we start the for loop at "1" here, we already added the
891 * first group sid as primary above. */
893 for (i=1; i<num_groupsids; i++) {
894 if (!add_sid_to_array_unique(result, &groupsids[i],
895 &result->user_sids, &result->num_sids)) {
900 /* Deal with the BUILTIN\Administrators group. If the SID can
901 be resolved then assume that the add_aliasmem( S-1-5-32 )
904 if ( !sid_to_gid( &global_sid_Builtin_Administrators, &gid ) ) {
905 /* We can only create a mapping if winbind is running
906 and the nested group functionality has been enabled */
908 if ( lp_winbind_nested_groups() && winbind_ping() ) {
910 status = create_builtin_administrators( );
911 if ( !NT_STATUS_IS_OK(status) ) {
912 DEBUG(2,("create_local_nt_token: Failed to create BUILTIN\\Administrators group!\n"));
913 /* don't fail, just log the message */
918 status = add_builtin_administrators( result );
919 if ( !NT_STATUS_IS_OK(status) ) {
920 /* just log a complaint but do not fail */
921 DEBUG(3,("create_local_nt_token: failed to check for local Administrators"
922 " membership (%s)\n", nt_errstr(status)));
927 /* Deal with the BUILTIN\Users group. If the SID can
928 be resolved then assume that the add_aliasmem( S-1-5-32 )
931 if ( !sid_to_gid( &global_sid_Builtin_Users, &gid ) ) {
932 /* We can only create a mapping if winbind is running
933 and the nested group functionality has been enabled */
935 if ( lp_winbind_nested_groups() && winbind_ping() ) {
937 status = create_builtin_users( );
938 if ( !NT_STATUS_IS_OK(status) ) {
939 DEBUG(2,("create_local_nt_token: Failed to create BUILTIN\\Users group!\n"));
940 /* don't fail, just log the message */
946 /* Deal with local groups */
948 if (lp_winbind_nested_groups()) {
950 /* Now add the aliases. First the one from our local SAM */
952 status = add_aliases(get_global_sam_sid(), result);
954 if (!NT_STATUS_IS_OK(status)) {
959 /* Finally the builtin ones */
961 status = add_aliases(&global_sid_Builtin, result);
963 if (!NT_STATUS_IS_OK(status)) {
970 get_privileges_for_sids(&result->privileges, result->user_sids,
976 * Create the token to use from server_info->sam_account and
977 * server_info->sids (the info3/sam groups). Find the unix gids.
980 NTSTATUS create_local_token(auth_serversupplied_info *server_info)
987 mem_ctx = talloc_new(NULL);
988 if (mem_ctx == NULL) {
989 DEBUG(0, ("talloc_new failed\n"));
990 return NT_STATUS_NO_MEMORY;
994 * If winbind is not around, we can not make much use of the SIDs the
995 * domain controller provided us with. Likewise if the user name was
996 * mapped to some local unix user.
999 if (((lp_server_role() == ROLE_DOMAIN_MEMBER) && !winbind_ping()) ||
1000 (server_info->was_mapped)) {
1001 status = create_token_from_username(server_info,
1002 server_info->unix_name,
1006 &server_info->unix_name,
1007 &server_info->ptok);
1010 server_info->ptok = create_local_nt_token(
1012 pdb_get_user_sid(server_info->sam_account),
1014 server_info->num_sids, server_info->sids);
1015 status = server_info->ptok ?
1016 NT_STATUS_OK : NT_STATUS_NO_SUCH_USER;
1019 if (!NT_STATUS_IS_OK(status)) {
1020 TALLOC_FREE(mem_ctx);
1024 /* Convert the SIDs to gids. */
1026 server_info->n_groups = 0;
1027 server_info->groups = NULL;
1029 /* Start at index 1, where the groups start. */
1031 for (i=1; i<server_info->ptok->num_sids; i++) {
1033 DOM_SID *sid = &server_info->ptok->user_sids[i];
1035 if (!sid_to_gid(sid, &gid)) {
1036 DEBUG(10, ("Could not convert SID %s to gid, "
1037 "ignoring it\n", sid_string_static(sid)));
1040 if (!add_gid_to_array_unique(server_info, gid, &server_info->groups,
1041 &server_info->n_groups)) {
1042 TALLOC_FREE(mem_ctx);
1043 return NT_STATUS_NO_MEMORY;
1047 debug_nt_user_token(DBGC_AUTH, 10, server_info->ptok);
1049 status = log_nt_token(mem_ctx, server_info->ptok);
1051 TALLOC_FREE(mem_ctx);
1056 * Create an artificial NT token given just a username. (Initially indended
1059 * We go through lookup_name() to avoid problems we had with 'winbind use
1064 * unmapped unix users: Go directly to nss to find the user's group.
1066 * A passdb user: The list of groups is provided by pdb_enum_group_memberships.
1068 * If the user is provided by winbind, the primary gid is set to "domain
1069 * users" of the user's domain. For an explanation why this is necessary, see
1070 * the thread starting at
1071 * http://lists.samba.org/archive/samba-technical/2006-January/044803.html.
1074 NTSTATUS create_token_from_username(TALLOC_CTX *mem_ctx, const char *username,
1076 uid_t *uid, gid_t *gid,
1077 char **found_username,
1078 struct nt_user_token **token)
1080 NTSTATUS result = NT_STATUS_NO_SUCH_USER;
1081 TALLOC_CTX *tmp_ctx;
1083 enum lsa_SidType type;
1085 DOM_SID *group_sids;
1086 DOM_SID unix_group_sid;
1087 size_t num_group_sids;
1091 tmp_ctx = talloc_new(NULL);
1092 if (tmp_ctx == NULL) {
1093 DEBUG(0, ("talloc_new failed\n"));
1094 return NT_STATUS_NO_MEMORY;
1097 if (!lookup_name_smbconf(tmp_ctx, username, LOOKUP_NAME_ALL,
1098 NULL, NULL, &user_sid, &type)) {
1099 DEBUG(1, ("lookup_name_smbconf for %s failed\n", username));
1103 if (type != SID_NAME_USER) {
1104 DEBUG(1, ("%s is a %s, not a user\n", username,
1105 sid_type_lookup(type)));
1109 if (!sid_to_uid(&user_sid, uid)) {
1110 DEBUG(1, ("sid_to_uid for %s (%s) failed\n",
1111 username, sid_string_static(&user_sid)));
1115 if (sid_check_is_in_our_domain(&user_sid)) {
1117 /* This is a passdb user, so ask passdb */
1119 struct samu *sam_acct = NULL;
1121 if ( !(sam_acct = samu_new( tmp_ctx )) ) {
1122 result = NT_STATUS_NO_MEMORY;
1126 if (!pdb_getsampwsid(sam_acct, &user_sid)) {
1127 DEBUG(1, ("pdb_getsampwsid(%s) for user %s failed\n",
1128 sid_string_static(&user_sid), username));
1129 DEBUGADD(1, ("Fall back to unix user %s\n", username));
1133 result = pdb_enum_group_memberships(mem_ctx, sam_acct,
1136 if (!NT_STATUS_IS_OK(result)) {
1137 DEBUG(10, ("enum_group_memberships failed for %s\n",
1139 DEBUGADD(1, ("Fall back to unix user %s\n", username));
1143 /* see the smb_panic() in pdb_default_enum_group_memberships */
1144 SMB_ASSERT(num_group_sids > 0);
1147 *found_username = talloc_strdup(mem_ctx,
1148 pdb_get_username(sam_acct));
1150 } else if (sid_check_is_in_unix_users(&user_sid)) {
1152 /* This is a unix user not in passdb. We need to ask nss
1153 * directly, without consulting passdb */
1155 struct passwd *pass;
1158 * This goto target is used as a fallback for the passdb
1159 * case. The concrete bug report is when passdb gave us an
1165 uid_to_unix_users_sid(*uid, &user_sid);
1167 pass = getpwuid_alloc(tmp_ctx, *uid);
1169 DEBUG(1, ("getpwuid(%d) for user %s failed\n",
1174 if (!getgroups_unix_user(tmp_ctx, username, pass->pw_gid,
1175 &gids, &num_group_sids)) {
1176 DEBUG(1, ("getgroups_unix_user for user %s failed\n",
1181 /* group_sids can be realloced - must be done on mem_ctx not tmp_ctx. */
1182 group_sids = talloc_array(mem_ctx, DOM_SID, num_group_sids);
1183 if (group_sids == NULL) {
1184 DEBUG(1, ("talloc_array failed\n"));
1185 result = NT_STATUS_NO_MEMORY;
1189 for (i=0; i<num_group_sids; i++) {
1190 gid_to_sid(&group_sids[i], gids[i]);
1193 /* In getgroups_unix_user we always set the primary gid */
1194 SMB_ASSERT(num_group_sids > 0);
1197 *found_username = talloc_strdup(mem_ctx, pass->pw_name);
1201 /* This user is from winbind, force the primary gid to the
1202 * user's "domain users" group. Under certain circumstances
1203 * (user comes from NT4), this might be a loss of
1204 * information. But we can not rely on winbind getting the
1205 * correct info. AD might prohibit winbind looking up that
1211 group_sids = talloc_array(mem_ctx, DOM_SID, num_group_sids);
1212 if (group_sids == NULL) {
1213 DEBUG(1, ("talloc_array failed\n"));
1214 result = NT_STATUS_NO_MEMORY;
1218 sid_copy(&group_sids[0], &user_sid);
1219 sid_split_rid(&group_sids[0], &dummy);
1220 sid_append_rid(&group_sids[0], DOMAIN_GROUP_RID_USERS);
1222 if (!sid_to_gid(&group_sids[0], gid)) {
1223 DEBUG(1, ("sid_to_gid(%s) failed\n",
1224 sid_string_static(&group_sids[0])));
1230 *found_username = talloc_strdup(mem_ctx, username);
1233 /* Add the "Unix Group" SID for each gid to catch mapped groups
1234 and their Unix equivalent. This is to solve the backwards
1235 compatibility problem of 'valid users = +ntadmin' where
1236 ntadmin has been paired with "Domain Admins" in the group
1237 mapping table. Otherwise smb.conf would need to be changed
1238 to 'valid user = "Domain Admins"'. --jerry */
1240 num_gids = num_group_sids;
1241 for ( i=0; i<num_gids; i++ ) {
1244 /* don't pickup anything managed by Winbind */
1246 if ( lp_idmap_gid(&low, &high) && (gids[i] >= low) && (gids[i] <= high) )
1249 if ( !gid_to_unix_groups_sid( gids[i], &unix_group_sid ) ) {
1250 DEBUG(1,("create_token_from_username: Failed to create SID "
1251 "for gid %d!\n", gids[i]));
1254 if (!add_sid_to_array_unique( mem_ctx, &unix_group_sid,
1255 &group_sids, &num_group_sids )) {
1256 result = NT_STATUS_NO_MEMORY;
1261 *token = create_local_nt_token(mem_ctx, &user_sid,
1262 is_guest, num_group_sids, group_sids);
1264 if ((*token == NULL) || (*found_username == NULL)) {
1265 result = NT_STATUS_NO_MEMORY;
1269 result = NT_STATUS_OK;
1271 TALLOC_FREE(tmp_ctx);
1275 /***************************************************************************
1276 Build upon create_token_from_username:
1278 Expensive helper function to figure out whether a user given its name is
1279 member of a particular group.
1280 ***************************************************************************/
1281 BOOL user_in_group_sid(const char *username, const DOM_SID *group_sid)
1286 char *found_username;
1287 struct nt_user_token *token;
1290 TALLOC_CTX *mem_ctx;
1292 mem_ctx = talloc_new(NULL);
1293 if (mem_ctx == NULL) {
1294 DEBUG(0, ("talloc_new failed\n"));
1298 status = create_token_from_username(mem_ctx, username, False,
1299 &uid, &gid, &found_username,
1302 if (!NT_STATUS_IS_OK(status)) {
1303 DEBUG(10, ("could not create token for %s\n", username));
1307 result = nt_token_check_sid(group_sid, token);
1309 TALLOC_FREE(mem_ctx);
1314 BOOL user_in_group(const char *username, const char *groupname)
1316 TALLOC_CTX *mem_ctx;
1320 mem_ctx = talloc_new(NULL);
1321 if (mem_ctx == NULL) {
1322 DEBUG(0, ("talloc_new failed\n"));
1326 ret = lookup_name(mem_ctx, groupname, LOOKUP_NAME_ALL,
1327 NULL, NULL, &group_sid, NULL);
1328 TALLOC_FREE(mem_ctx);
1331 DEBUG(10, ("lookup_name for (%s) failed.\n", groupname));
1335 return user_in_group_sid(username, &group_sid);
1339 /***************************************************************************
1340 Make (and fill) a user_info struct from a 'struct passwd' by conversion
1342 ***************************************************************************/
1344 NTSTATUS make_server_info_pw(auth_serversupplied_info **server_info,
1345 char *unix_username,
1349 struct samu *sampass = NULL;
1351 auth_serversupplied_info *result;
1353 if ( !(sampass = samu_new( NULL )) ) {
1354 return NT_STATUS_NO_MEMORY;
1357 status = samu_set_unix( sampass, pwd );
1358 if (!NT_STATUS_IS_OK(status)) {
1362 result = make_server_info(NULL);
1363 if (result == NULL) {
1364 TALLOC_FREE(sampass);
1365 return NT_STATUS_NO_MEMORY;
1368 result->sam_account = sampass;
1369 result->unix_name = talloc_strdup(result, unix_username);
1370 result->uid = pwd->pw_uid;
1371 result->gid = pwd->pw_gid;
1373 status = pdb_enum_group_memberships(result, sampass,
1374 &result->sids, &gids,
1377 if (!NT_STATUS_IS_OK(status)) {
1378 DEBUG(10, ("pdb_enum_group_memberships failed: %s\n",
1379 nt_errstr(status)));
1380 TALLOC_FREE(result);
1384 /* For now we throw away the gids and convert via sid_to_gid
1385 * later. This needs fixing, but I'd like to get the code straight and
1389 *server_info = result;
1391 return NT_STATUS_OK;
1394 /***************************************************************************
1395 Make (and fill) a user_info struct for a guest login.
1396 This *must* succeed for smbd to start. If there is no mapping entry for
1397 the guest gid, then create one.
1398 ***************************************************************************/
1400 static NTSTATUS make_new_server_info_guest(auth_serversupplied_info **server_info)
1403 struct samu *sampass = NULL;
1406 static const char zeros[16] = { 0, };
1408 if ( !(sampass = samu_new( NULL )) ) {
1409 return NT_STATUS_NO_MEMORY;
1412 sid_copy(&guest_sid, get_global_sam_sid());
1413 sid_append_rid(&guest_sid, DOMAIN_USER_RID_GUEST);
1416 ret = pdb_getsampwsid(sampass, &guest_sid);
1420 TALLOC_FREE(sampass);
1421 return NT_STATUS_NO_SUCH_USER;
1424 status = make_server_info_sam(server_info, sampass);
1425 if (!NT_STATUS_IS_OK(status)) {
1426 TALLOC_FREE(sampass);
1430 (*server_info)->guest = True;
1432 status = create_local_token(*server_info);
1433 if (!NT_STATUS_IS_OK(status)) {
1434 DEBUG(10, ("create_local_token failed: %s\n",
1435 nt_errstr(status)));
1439 /* annoying, but the Guest really does have a session key, and it is
1441 (*server_info)->user_session_key = data_blob(zeros, sizeof(zeros));
1442 (*server_info)->lm_session_key = data_blob(zeros, sizeof(zeros));
1444 return NT_STATUS_OK;
1447 static auth_serversupplied_info *copy_serverinfo(auth_serversupplied_info *src)
1449 auth_serversupplied_info *dst;
1451 dst = make_server_info(NULL);
1456 dst->guest = src->guest;
1457 dst->uid = src->uid;
1458 dst->gid = src->gid;
1459 dst->n_groups = src->n_groups;
1460 if (src->n_groups != 0) {
1461 dst->groups = (gid_t *)talloc_memdup(
1462 dst, src->groups, sizeof(gid_t)*dst->n_groups);
1468 dst->ptok = dup_nt_token(dst, src->ptok);
1475 dst->user_session_key = data_blob_talloc( dst, src->user_session_key.data,
1476 src->user_session_key.length);
1478 dst->lm_session_key = data_blob_talloc(dst, src->lm_session_key.data,
1479 src->lm_session_key.length);
1481 dst->sam_account = samu_new(NULL);
1482 if (!dst->sam_account) {
1487 if (!pdb_copy_sam_account(dst->sam_account, src->sam_account)) {
1492 dst->pam_handle = NULL;
1493 dst->unix_name = talloc_strdup(dst, src->unix_name);
1494 if (!dst->unix_name) {
1502 static auth_serversupplied_info *guest_info = NULL;
1504 BOOL init_guest_info(void)
1506 if (guest_info != NULL)
1509 return NT_STATUS_IS_OK(make_new_server_info_guest(&guest_info));
1512 NTSTATUS make_server_info_guest(auth_serversupplied_info **server_info)
1514 *server_info = copy_serverinfo(guest_info);
1515 return (*server_info != NULL) ? NT_STATUS_OK : NT_STATUS_NO_MEMORY;
1518 BOOL copy_current_user(struct current_user *dst, struct current_user *src)
1521 NT_USER_TOKEN *nt_token;
1523 groups = (gid_t *)memdup(src->ut.groups,
1524 sizeof(gid_t) * src->ut.ngroups);
1525 if ((src->ut.ngroups != 0) && (groups == NULL)) {
1529 nt_token = dup_nt_token(NULL, src->nt_user_token);
1530 if (nt_token == NULL) {
1535 dst->conn = src->conn;
1536 dst->vuid = src->vuid;
1537 dst->ut.uid = src->ut.uid;
1538 dst->ut.gid = src->ut.gid;
1539 dst->ut.ngroups = src->ut.ngroups;
1540 dst->ut.groups = groups;
1541 dst->nt_user_token = nt_token;
1545 BOOL set_current_user_guest(struct current_user *dst)
1548 NT_USER_TOKEN *nt_token;
1550 groups = (gid_t *)memdup(guest_info->groups,
1551 sizeof(gid_t) * guest_info->n_groups);
1552 if (groups == NULL) {
1556 nt_token = dup_nt_token(NULL, guest_info->ptok);
1557 if (nt_token == NULL) {
1562 TALLOC_FREE(dst->nt_user_token);
1563 SAFE_FREE(dst->ut.groups);
1565 /* dst->conn is never really dereferenced, it's only tested for
1566 * equality in uid.c */
1569 dst->vuid = UID_FIELD_INVALID;
1570 dst->ut.uid = guest_info->uid;
1571 dst->ut.gid = guest_info->gid;
1572 dst->ut.ngroups = guest_info->n_groups;
1573 dst->ut.groups = groups;
1574 dst->nt_user_token = nt_token;
1578 /***************************************************************************
1579 Purely internal function for make_server_info_info3
1580 Fill the sam account from getpwnam
1581 ***************************************************************************/
1582 static NTSTATUS fill_sam_account(TALLOC_CTX *mem_ctx,
1584 const char *username,
1585 char **found_username,
1586 uid_t *uid, gid_t *gid,
1587 struct samu *account,
1588 BOOL *username_was_mapped)
1591 fstring dom_user, lower_username;
1592 fstring real_username;
1593 struct passwd *passwd;
1595 fstrcpy( lower_username, username );
1596 strlower_m( lower_username );
1598 fstr_sprintf(dom_user, "%s%c%s", domain, *lp_winbind_separator(),
1601 /* Get the passwd struct. Try to create the account is necessary. */
1603 *username_was_mapped = map_username( dom_user );
1605 if ( !(passwd = smb_getpwnam( NULL, dom_user, real_username, True )) )
1606 return NT_STATUS_NO_SUCH_USER;
1608 *uid = passwd->pw_uid;
1609 *gid = passwd->pw_gid;
1611 /* This is pointless -- there is no suport for differing
1612 unix and windows names. Make sure to always store the
1613 one we actually looked up and succeeded. Have I mentioned
1614 why I hate the 'winbind use default domain' parameter?
1617 *found_username = talloc_strdup( mem_ctx, real_username );
1619 DEBUG(5,("fill_sam_account: located username was [%s]\n", *found_username));
1621 nt_status = samu_set_unix( account, passwd );
1623 TALLOC_FREE(passwd);
1628 /****************************************************************************
1629 Wrapper to allow the getpwnam() call to strip the domain name and
1630 try again in case a local UNIX user is already there. Also run through
1631 the username if we fallback to the username only.
1632 ****************************************************************************/
1634 struct passwd *smb_getpwnam( TALLOC_CTX *mem_ctx, char *domuser,
1635 fstring save_username, BOOL create )
1637 struct passwd *pw = NULL;
1641 /* we only save a copy of the username it has been mangled
1642 by winbindd use default domain */
1644 save_username[0] = '\0';
1646 /* don't call map_username() here since it has to be done higher
1647 up the stack so we don't call it mutliple times */
1649 fstrcpy( username, domuser );
1651 p = strchr_m( username, *lp_winbind_separator() );
1653 /* code for a DOMAIN\user string */
1656 fstring strip_username;
1658 pw = Get_Pwnam_alloc( mem_ctx, domuser );
1660 /* make sure we get the case of the username correct */
1661 /* work around 'winbind use default domain = yes' */
1663 if ( !strchr_m( pw->pw_name, *lp_winbind_separator() ) ) {
1666 /* split the domain and username into 2 strings */
1670 fstr_sprintf(save_username, "%s%c%s", domain, *lp_winbind_separator(), pw->pw_name);
1673 fstrcpy( save_username, pw->pw_name );
1679 /* setup for lookup of just the username */
1680 /* remember that p and username are overlapping memory */
1683 fstrcpy( strip_username, p );
1684 fstrcpy( username, strip_username );
1687 /* just lookup a plain username */
1689 pw = Get_Pwnam_alloc(mem_ctx, username);
1691 /* Create local user if requested but only if winbindd
1692 is not running. We need to protect against cases
1693 where winbindd is failing and then prematurely
1694 creating users in /etc/passwd */
1696 if ( !pw && create && !winbind_ping() ) {
1697 /* Don't add a machine account. */
1698 if (username[strlen(username)-1] == '$')
1701 smb_create_user(NULL, username, NULL);
1702 pw = Get_Pwnam_alloc(mem_ctx, username);
1705 /* one last check for a valid passwd struct */
1708 fstrcpy( save_username, pw->pw_name );
1713 /***************************************************************************
1714 Make a server_info struct from the info3 returned by a domain logon
1715 ***************************************************************************/
1717 NTSTATUS make_server_info_info3(TALLOC_CTX *mem_ctx,
1718 const char *sent_nt_username,
1720 auth_serversupplied_info **server_info,
1721 NET_USER_INFO_3 *info3)
1723 static const char zeros[16] = { 0, };
1725 NTSTATUS nt_status = NT_STATUS_OK;
1726 char *found_username;
1727 const char *nt_domain;
1728 const char *nt_username;
1729 struct samu *sam_account = NULL;
1732 BOOL username_was_mapped;
1739 auth_serversupplied_info *result;
1742 Here is where we should check the list of
1743 trusted domains, and verify that the SID
1747 sid_copy(&user_sid, &info3->dom_sid.sid);
1748 if (!sid_append_rid(&user_sid, info3->user_rid)) {
1749 return NT_STATUS_INVALID_PARAMETER;
1752 sid_copy(&group_sid, &info3->dom_sid.sid);
1753 if (!sid_append_rid(&group_sid, info3->group_rid)) {
1754 return NT_STATUS_INVALID_PARAMETER;
1757 if (!(nt_username = unistr2_tdup(mem_ctx, &(info3->uni_user_name)))) {
1758 /* If the server didn't give us one, just use the one we sent
1760 nt_username = sent_nt_username;
1763 if (!(nt_domain = unistr2_tdup(mem_ctx, &(info3->uni_logon_dom)))) {
1764 /* If the server didn't give us one, just use the one we sent
1769 /* try to fill the SAM account.. If getpwnam() fails, then try the
1770 add user script (2.2.x behavior).
1772 We use the _unmapped_ username here in an attempt to provide
1773 consistent username mapping behavior between kerberos and NTLM[SSP]
1774 authentication in domain mode security. I.E. Username mapping
1775 should be applied to the fully qualified username
1776 (e.g. DOMAIN\user) and not just the login name. Yes this means we
1777 called map_username() unnecessarily in make_user_info_map() but
1778 that is how the current code is designed. Making the change here
1779 is the least disruptive place. -- jerry */
1781 if ( !(sam_account = samu_new( NULL )) ) {
1782 return NT_STATUS_NO_MEMORY;
1785 /* this call will try to create the user if necessary */
1787 nt_status = fill_sam_account(mem_ctx, nt_domain, sent_nt_username,
1788 &found_username, &uid, &gid, sam_account,
1789 &username_was_mapped);
1792 /* if we still don't have a valid unix account check for
1793 'map to guest = bad uid' */
1795 if (!NT_STATUS_IS_OK(nt_status)) {
1796 TALLOC_FREE( sam_account );
1797 if ( lp_map_to_guest() == MAP_TO_GUEST_ON_BAD_UID ) {
1798 make_server_info_guest(server_info);
1799 return NT_STATUS_OK;
1804 if (!pdb_set_nt_username(sam_account, nt_username, PDB_CHANGED)) {
1805 TALLOC_FREE(sam_account);
1806 return NT_STATUS_NO_MEMORY;
1809 if (!pdb_set_username(sam_account, nt_username, PDB_CHANGED)) {
1810 TALLOC_FREE(sam_account);
1811 return NT_STATUS_NO_MEMORY;
1814 if (!pdb_set_domain(sam_account, nt_domain, PDB_CHANGED)) {
1815 TALLOC_FREE(sam_account);
1816 return NT_STATUS_NO_MEMORY;
1819 if (!pdb_set_user_sid(sam_account, &user_sid, PDB_CHANGED)) {
1820 TALLOC_FREE(sam_account);
1821 return NT_STATUS_UNSUCCESSFUL;
1824 if (!pdb_set_group_sid(sam_account, &group_sid, PDB_CHANGED)) {
1825 TALLOC_FREE(sam_account);
1826 return NT_STATUS_UNSUCCESSFUL;
1829 if (!pdb_set_fullname(sam_account,
1830 unistr2_static(&(info3->uni_full_name)),
1832 TALLOC_FREE(sam_account);
1833 return NT_STATUS_NO_MEMORY;
1836 if (!pdb_set_logon_script(sam_account,
1837 unistr2_static(&(info3->uni_logon_script)),
1839 TALLOC_FREE(sam_account);
1840 return NT_STATUS_NO_MEMORY;
1843 if (!pdb_set_profile_path(sam_account,
1844 unistr2_static(&(info3->uni_profile_path)),
1846 TALLOC_FREE(sam_account);
1847 return NT_STATUS_NO_MEMORY;
1850 if (!pdb_set_homedir(sam_account,
1851 unistr2_static(&(info3->uni_home_dir)),
1853 TALLOC_FREE(sam_account);
1854 return NT_STATUS_NO_MEMORY;
1857 if (!pdb_set_dir_drive(sam_account,
1858 unistr2_static(&(info3->uni_dir_drive)),
1860 TALLOC_FREE(sam_account);
1861 return NT_STATUS_NO_MEMORY;
1864 if (!pdb_set_acct_ctrl(sam_account, info3->acct_flags, PDB_CHANGED)) {
1865 TALLOC_FREE(sam_account);
1866 return NT_STATUS_NO_MEMORY;
1869 result = make_server_info(NULL);
1870 if (result == NULL) {
1871 DEBUG(4, ("make_server_info failed!\n"));
1872 TALLOC_FREE(sam_account);
1873 return NT_STATUS_NO_MEMORY;
1876 /* save this here to _net_sam_logon() doesn't fail (it assumes a
1877 valid struct samu) */
1879 result->sam_account = sam_account;
1880 result->unix_name = talloc_strdup(result, found_username);
1882 /* Fill in the unix info we found on the way */
1887 /* Create a 'combined' list of all SIDs we might want in the SD */
1889 result->num_sids = 0;
1890 result->sids = NULL;
1892 /* and create (by appending rids) the 'domain' sids */
1894 for (i = 0; i < info3->num_groups2; i++) {
1896 if (!sid_compose(&sid, &info3->dom_sid.sid,
1897 info3->gids[i].g_rid)) {
1898 DEBUG(3,("could not append additional group rid "
1899 "0x%x\n", info3->gids[i].g_rid));
1900 TALLOC_FREE(result);
1901 return NT_STATUS_INVALID_PARAMETER;
1903 if (!add_sid_to_array(result, &sid, &result->sids,
1904 &result->num_sids)) {
1905 TALLOC_FREE(result);
1906 return NT_STATUS_NO_MEMORY;
1910 /* Copy 'other' sids. We need to do sid filtering here to
1911 prevent possible elevation of privileges. See:
1913 http://www.microsoft.com/windows2000/techinfo/administration/security/sidfilter.asp
1916 for (i = 0; i < info3->num_other_sids; i++) {
1917 if (!add_sid_to_array(result, &info3->other_sids[i].sid,
1919 &result->num_sids)) {
1920 TALLOC_FREE(result);
1921 return NT_STATUS_NO_MEMORY;
1925 result->login_server = unistr2_tdup(result,
1926 &(info3->uni_logon_srv));
1928 /* ensure we are never given NULL session keys */
1930 if (memcmp(info3->user_sess_key, zeros, sizeof(zeros)) == 0) {
1931 result->user_session_key = data_blob(NULL, 0);
1933 result->user_session_key = data_blob_talloc(
1934 result, info3->user_sess_key,
1935 sizeof(info3->user_sess_key));
1938 if (memcmp(info3->lm_sess_key, zeros, 8) == 0) {
1939 result->lm_session_key = data_blob(NULL, 0);
1941 result->lm_session_key = data_blob_talloc(
1942 result, info3->lm_sess_key,
1943 sizeof(info3->lm_sess_key));
1946 result->was_mapped = username_was_mapped;
1948 *server_info = result;
1950 return NT_STATUS_OK;
1953 /***************************************************************************
1954 Free a user_info struct
1955 ***************************************************************************/
1957 void free_user_info(auth_usersupplied_info **user_info)
1959 DEBUG(5,("attempting to free (and zero) a user_info structure\n"));
1960 if (*user_info != NULL) {
1961 if ((*user_info)->smb_name) {
1962 DEBUG(10,("structure was created for %s\n",
1963 (*user_info)->smb_name));
1965 SAFE_FREE((*user_info)->smb_name);
1966 SAFE_FREE((*user_info)->internal_username);
1967 SAFE_FREE((*user_info)->client_domain);
1968 SAFE_FREE((*user_info)->domain);
1969 SAFE_FREE((*user_info)->wksta_name);
1970 data_blob_free(&(*user_info)->lm_resp);
1971 data_blob_free(&(*user_info)->nt_resp);
1972 data_blob_clear_free(&(*user_info)->lm_interactive_pwd);
1973 data_blob_clear_free(&(*user_info)->nt_interactive_pwd);
1974 data_blob_clear_free(&(*user_info)->plaintext_password);
1975 ZERO_STRUCT(**user_info);
1977 SAFE_FREE(*user_info);
1980 /***************************************************************************
1981 Make an auth_methods struct
1982 ***************************************************************************/
1984 BOOL make_auth_methods(struct auth_context *auth_context, auth_methods **auth_method)
1986 if (!auth_context) {
1987 smb_panic("no auth_context supplied to "
1988 "make_auth_methods()!\n");
1992 smb_panic("make_auth_methods: pointer to auth_method pointer "
1996 *auth_method = TALLOC_P(auth_context->mem_ctx, auth_methods);
1997 if (!*auth_method) {
1998 DEBUG(0,("make_auth_method: malloc failed!\n"));
2001 ZERO_STRUCTP(*auth_method);
2006 /****************************************************************************
2007 Duplicate a SID token.
2008 ****************************************************************************/
2010 NT_USER_TOKEN *dup_nt_token(TALLOC_CTX *mem_ctx, const NT_USER_TOKEN *ptoken)
2012 NT_USER_TOKEN *token;
2017 token = TALLOC_P(mem_ctx, NT_USER_TOKEN);
2018 if (token == NULL) {
2019 DEBUG(0, ("talloc failed\n"));
2023 ZERO_STRUCTP(token);
2025 if (ptoken->user_sids && ptoken->num_sids) {
2026 token->user_sids = (DOM_SID *)talloc_memdup(
2027 token, ptoken->user_sids, sizeof(DOM_SID) * ptoken->num_sids );
2029 if (token->user_sids == NULL) {
2030 DEBUG(0, ("talloc_memdup failed\n"));
2034 token->num_sids = ptoken->num_sids;
2037 /* copy the privileges; don't consider failure to be critical here */
2039 if ( !se_priv_copy( &token->privileges, &ptoken->privileges ) ) {
2040 DEBUG(0,("dup_nt_token: Failure to copy SE_PRIV!. "
2041 "Continuing with 0 privileges assigned.\n"));
2047 /****************************************************************************
2048 Check for a SID in an NT_USER_TOKEN
2049 ****************************************************************************/
2051 BOOL nt_token_check_sid ( const DOM_SID *sid, const NT_USER_TOKEN *token )
2055 if ( !sid || !token )
2058 for ( i=0; i<token->num_sids; i++ ) {
2059 if ( sid_equal( sid, &token->user_sids[i] ) )
2066 BOOL nt_token_check_domain_rid( NT_USER_TOKEN *token, uint32 rid )
2070 /* if we are a domain member, the get the domain SID, else for
2071 a DC or standalone server, use our own SID */
2073 if ( lp_server_role() == ROLE_DOMAIN_MEMBER ) {
2074 if ( !secrets_fetch_domain_sid( lp_workgroup(),
2076 DEBUG(1,("nt_token_check_domain_rid: Cannot lookup "
2077 "SID for domain [%s]\n", lp_workgroup()));
2082 sid_copy( &domain_sid, get_global_sam_sid() );
2084 sid_append_rid( &domain_sid, rid );
2086 return nt_token_check_sid( &domain_sid, token );\
2090 * Verify whether or not given domain is trusted.
2092 * @param domain_name name of the domain to be verified
2093 * @return true if domain is one of the trusted once or
2094 * false if otherwise
2097 BOOL is_trusted_domain(const char* dom_name)
2099 DOM_SID trustdom_sid;
2102 /* no trusted domains for a standalone server */
2104 if ( lp_server_role() == ROLE_STANDALONE )
2107 /* if we are a DC, then check for a direct trust relationships */
2111 DEBUG (5,("is_trusted_domain: Checking for domain trust with "
2112 "[%s]\n", dom_name ));
2113 ret = secrets_fetch_trusted_domain_password(dom_name, NULL,
2122 /* If winbind is around, ask it */
2124 result = wb_is_trusted_domain(dom_name);
2126 if (result == NSS_STATUS_SUCCESS) {
2130 if (result == NSS_STATUS_NOTFOUND) {
2131 /* winbind could not find the domain */
2135 /* The only other possible result is that winbind is not up
2136 and running. We need to update the trustdom_cache
2139 update_trustdom_cache();
2142 /* now the trustdom cache should be available a DC could still
2143 * have a transitive trust so fall back to the cache of trusted
2144 * domains (like a domain member would use */
2146 if ( trustdom_cache_fetch(dom_name, &trustdom_sid) ) {