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)
244 unsigned char lm_pwd[16];
245 unsigned char nt_pwd[16];
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(lm_pwd, key, sizeof(lm_pwd));
273 if (nt_interactive_pwd)
274 SamOEMhash(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(lm_pwd, chal,
288 if (nt_interactive_pwd)
289 SMBOWFencrypt(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_users: 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 DEBUG(10, ("Create local NT token for %s\n", sid_string_static(user_sid)));
846 if (!(result = TALLOC_ZERO_P(mem_ctx, NT_USER_TOKEN))) {
847 DEBUG(0, ("talloc failed\n"));
851 /* Add the user and primary group sid */
853 if (!add_sid_to_array(result, user_sid,
854 &result->user_sids, &result->num_sids)) {
858 /* For guest, num_groupsids may be zero. */
860 if (!add_sid_to_array(result, &groupsids[0],
861 &result->user_sids, &result->num_sids)) {
866 /* Add in BUILTIN sids */
868 if (!add_sid_to_array(result, &global_sid_World,
869 &result->user_sids, &result->num_sids)) {
872 if (!add_sid_to_array(result, &global_sid_Network,
873 &result->user_sids, &result->num_sids)) {
878 if (!add_sid_to_array(result, &global_sid_Builtin_Guests,
879 &result->user_sids, &result->num_sids)) {
883 if (!add_sid_to_array(result, &global_sid_Authenticated_Users,
884 &result->user_sids, &result->num_sids)) {
889 /* Now the SIDs we got from authentication. These are the ones from
890 * the info3 struct or from the pdb_enum_group_memberships, depending
891 * on who authenticated the user.
892 * Note that we start the for loop at "1" here, we already added the
893 * first group sid as primary above. */
895 for (i=1; i<num_groupsids; i++) {
896 if (!add_sid_to_array_unique(result, &groupsids[i],
897 &result->user_sids, &result->num_sids)) {
902 /* Deal with the BUILTIN\Administrators group. If the SID can
903 be resolved then assume that the add_aliasmem( S-1-5-32 )
906 if ( !sid_to_gid( &global_sid_Builtin_Administrators, &gid ) ) {
907 /* We can only create a mapping if winbind is running
908 and the nested group functionality has been enabled */
910 if ( lp_winbind_nested_groups() && winbind_ping() ) {
912 status = create_builtin_administrators( );
913 if ( !NT_STATUS_IS_OK(status) ) {
914 DEBUG(2,("create_local_nt_token: Failed to create BUILTIN\\Administrators group!\n"));
915 /* don't fail, just log the message */
920 status = add_builtin_administrators( result );
921 if ( !NT_STATUS_IS_OK(status) ) {
922 /* just log a complaint but do not fail */
923 DEBUG(3,("create_local_nt_token: failed to check for local Administrators"
924 " membership (%s)\n", nt_errstr(status)));
929 /* Deal with the BUILTIN\Users group. If the SID can
930 be resolved then assume that the add_aliasmem( S-1-5-32 )
933 if ( !sid_to_gid( &global_sid_Builtin_Users, &gid ) ) {
934 /* We can only create a mapping if winbind is running
935 and the nested group functionality has been enabled */
937 if ( lp_winbind_nested_groups() && winbind_ping() ) {
939 status = create_builtin_users( );
940 if ( !NT_STATUS_IS_OK(status) ) {
941 DEBUG(2,("create_local_nt_token: Failed to create BUILTIN\\Users group!\n"));
942 /* don't fail, just log the message */
948 /* Deal with local groups */
950 if (lp_winbind_nested_groups()) {
952 /* Now add the aliases. First the one from our local SAM */
954 status = add_aliases(get_global_sam_sid(), result);
956 if (!NT_STATUS_IS_OK(status)) {
961 /* Finally the builtin ones */
963 status = add_aliases(&global_sid_Builtin, result);
965 if (!NT_STATUS_IS_OK(status)) {
972 get_privileges_for_sids(&result->privileges, result->user_sids,
978 * Create the token to use from server_info->sam_account and
979 * server_info->sids (the info3/sam groups). Find the unix gids.
982 NTSTATUS create_local_token(auth_serversupplied_info *server_info)
991 mem_ctx = talloc_new(NULL);
992 if (mem_ctx == NULL) {
993 DEBUG(0, ("talloc_new failed\n"));
994 return NT_STATUS_NO_MEMORY;
998 * If winbind is not around, we can not make much use of the SIDs the
999 * domain controller provided us with. Likewise if the user name was
1000 * mapped to some local unix user.
1003 if (((lp_server_role() == ROLE_DOMAIN_MEMBER) && !winbind_ping()) ||
1004 (server_info->was_mapped)) {
1005 status = create_token_from_username(server_info,
1006 server_info->unix_name,
1010 &server_info->unix_name,
1011 &server_info->ptok);
1014 server_info->ptok = create_local_nt_token(
1016 pdb_get_user_sid(server_info->sam_account),
1018 server_info->num_sids, server_info->sids);
1019 status = server_info->ptok ?
1020 NT_STATUS_OK : NT_STATUS_NO_SUCH_USER;
1023 if (!NT_STATUS_IS_OK(status)) {
1024 TALLOC_FREE(mem_ctx);
1028 /* Convert the SIDs to gids. */
1030 server_info->n_groups = 0;
1031 server_info->groups = NULL;
1033 /* Start at index 1, where the groups start. */
1034 ids = talloc_zero_array(mem_ctx, struct id_map, server_info->ptok->num_sids);
1035 for (i = 0; i < server_info->ptok->num_sids-1; i++) {
1036 ids[i].sid = &server_info->ptok->user_sids[i + 1]; /* store the sids */
1039 if (!winbind_sids_to_unixids(ids, server_info->ptok->num_sids-1)) {
1040 DEBUG(2, ("Query to map secondary SIDs failed!\n"));
1041 if (!winbind_ping()) {
1042 DEBUG(2, ("Winbindd is not running, will try to map SIDs one by one with legacy code\n"));
1047 for (i = 0; i < server_info->ptok->num_sids-1; i++) {
1051 if (ids[i].status != ID_MAPPED) {
1052 DEBUG(10, ("Could not convert SID %s to gid, "
1053 "ignoring it\n", sid_string_static(ids[i].sid)));
1056 if (ids[i].xid.type == ID_TYPE_UID) {
1057 DEBUG(10, ("SID %s is a User ID (%u) not a Group ID, "
1058 "ignoring it\n", sid_string_static(ids[i].sid), ids[i].xid.id));
1061 agid = (gid_t)ids[i].xid.id;
1063 if (! sid_to_gid(ids[i].sid, &agid)) {
1067 if (!add_gid_to_array_unique(server_info, agid, &server_info->groups,
1068 &server_info->n_groups)) {
1069 TALLOC_FREE(mem_ctx);
1070 return NT_STATUS_NO_MEMORY;
1074 debug_nt_user_token(DBGC_AUTH, 10, server_info->ptok);
1076 status = log_nt_token(mem_ctx, server_info->ptok);
1078 TALLOC_FREE(mem_ctx);
1083 * Create an artificial NT token given just a username. (Initially indended
1086 * We go through lookup_name() to avoid problems we had with 'winbind use
1091 * unmapped unix users: Go directly to nss to find the user's group.
1093 * A passdb user: The list of groups is provided by pdb_enum_group_memberships.
1095 * If the user is provided by winbind, the primary gid is set to "domain
1096 * users" of the user's domain. For an explanation why this is necessary, see
1097 * the thread starting at
1098 * http://lists.samba.org/archive/samba-technical/2006-January/044803.html.
1101 NTSTATUS create_token_from_username(TALLOC_CTX *mem_ctx, const char *username,
1103 uid_t *uid, gid_t *gid,
1104 char **found_username,
1105 struct nt_user_token **token)
1107 NTSTATUS result = NT_STATUS_NO_SUCH_USER;
1108 TALLOC_CTX *tmp_ctx;
1110 enum lsa_SidType type;
1112 DOM_SID *group_sids;
1113 DOM_SID unix_group_sid;
1114 size_t num_group_sids;
1118 tmp_ctx = talloc_new(NULL);
1119 if (tmp_ctx == NULL) {
1120 DEBUG(0, ("talloc_new failed\n"));
1121 return NT_STATUS_NO_MEMORY;
1124 if (!lookup_name_smbconf(tmp_ctx, username, LOOKUP_NAME_ALL,
1125 NULL, NULL, &user_sid, &type)) {
1126 DEBUG(1, ("lookup_name_smbconf for %s failed\n", username));
1130 if (type != SID_NAME_USER) {
1131 DEBUG(1, ("%s is a %s, not a user\n", username,
1132 sid_type_lookup(type)));
1136 if (!sid_to_uid(&user_sid, uid)) {
1137 DEBUG(1, ("sid_to_uid for %s (%s) failed\n",
1138 username, sid_string_static(&user_sid)));
1142 if (sid_check_is_in_our_domain(&user_sid)) {
1144 /* This is a passdb user, so ask passdb */
1146 struct samu *sam_acct = NULL;
1148 if ( !(sam_acct = samu_new( tmp_ctx )) ) {
1149 result = NT_STATUS_NO_MEMORY;
1153 if (!pdb_getsampwsid(sam_acct, &user_sid)) {
1154 DEBUG(1, ("pdb_getsampwsid(%s) for user %s failed\n",
1155 sid_string_static(&user_sid), username));
1156 DEBUGADD(1, ("Fall back to unix user %s\n", username));
1160 result = pdb_enum_group_memberships(tmp_ctx, sam_acct,
1163 if (!NT_STATUS_IS_OK(result)) {
1164 DEBUG(10, ("enum_group_memberships failed for %s\n",
1166 DEBUGADD(1, ("Fall back to unix user %s\n", username));
1170 /* see the smb_panic() in pdb_default_enum_group_memberships */
1171 SMB_ASSERT(num_group_sids > 0);
1175 /* Ensure we're returning the found_username on the right context. */
1176 *found_username = talloc_strdup(mem_ctx,
1177 pdb_get_username(sam_acct));
1179 } else if (sid_check_is_in_unix_users(&user_sid)) {
1181 /* This is a unix user not in passdb. We need to ask nss
1182 * directly, without consulting passdb */
1184 struct passwd *pass;
1187 * This goto target is used as a fallback for the passdb
1188 * case. The concrete bug report is when passdb gave us an
1194 uid_to_unix_users_sid(*uid, &user_sid);
1196 pass = getpwuid_alloc(tmp_ctx, *uid);
1198 DEBUG(1, ("getpwuid(%d) for user %s failed\n",
1203 if (!getgroups_unix_user(tmp_ctx, username, pass->pw_gid,
1204 &gids, &num_group_sids)) {
1205 DEBUG(1, ("getgroups_unix_user for user %s failed\n",
1210 group_sids = talloc_array(tmp_ctx, DOM_SID, num_group_sids);
1211 if (group_sids == NULL) {
1212 DEBUG(1, ("talloc_array failed\n"));
1213 result = NT_STATUS_NO_MEMORY;
1217 for (i=0; i<num_group_sids; i++) {
1218 gid_to_sid(&group_sids[i], gids[i]);
1221 /* In getgroups_unix_user we always set the primary gid */
1222 SMB_ASSERT(num_group_sids > 0);
1226 /* Ensure we're returning the found_username on the right context. */
1227 *found_username = talloc_strdup(mem_ctx, pass->pw_name);
1230 /* This user is from winbind, force the primary gid to the
1231 * user's "domain users" group. Under certain circumstances
1232 * (user comes from NT4), this might be a loss of
1233 * information. But we can not rely on winbind getting the
1234 * correct info. AD might prohibit winbind looking up that
1240 group_sids = talloc_array(tmp_ctx, DOM_SID, num_group_sids);
1241 if (group_sids == NULL) {
1242 DEBUG(1, ("talloc_array failed\n"));
1243 result = NT_STATUS_NO_MEMORY;
1247 sid_copy(&group_sids[0], &user_sid);
1248 sid_split_rid(&group_sids[0], &dummy);
1249 sid_append_rid(&group_sids[0], DOMAIN_GROUP_RID_USERS);
1251 if (!sid_to_gid(&group_sids[0], gid)) {
1252 DEBUG(1, ("sid_to_gid(%s) failed\n",
1253 sid_string_static(&group_sids[0])));
1259 /* Ensure we're returning the found_username on the right context. */
1260 *found_username = talloc_strdup(mem_ctx, username);
1263 /* Add the "Unix Group" SID for each gid to catch mapped groups
1264 and their Unix equivalent. This is to solve the backwards
1265 compatibility problem of 'valid users = +ntadmin' where
1266 ntadmin has been paired with "Domain Admins" in the group
1267 mapping table. Otherwise smb.conf would need to be changed
1268 to 'valid user = "Domain Admins"'. --jerry */
1270 num_gids = num_group_sids;
1271 for ( i=0; i<num_gids; i++ ) {
1274 /* don't pickup anything managed by Winbind */
1276 if ( lp_idmap_gid(&low, &high) && (gids[i] >= low) && (gids[i] <= high) )
1279 if ( !gid_to_unix_groups_sid( gids[i], &unix_group_sid ) ) {
1280 DEBUG(1,("create_token_from_username: Failed to create SID "
1281 "for gid %d!\n", gids[i]));
1284 if (!add_sid_to_array_unique(tmp_ctx, &unix_group_sid,
1285 &group_sids, &num_group_sids )) {
1286 result = NT_STATUS_NO_MEMORY;
1291 /* Ensure we're creating the nt_token on the right context. */
1292 *token = create_local_nt_token(mem_ctx, &user_sid,
1293 is_guest, num_group_sids, group_sids);
1295 if ((*token == NULL) || (*found_username == NULL)) {
1296 result = NT_STATUS_NO_MEMORY;
1300 result = NT_STATUS_OK;
1302 TALLOC_FREE(tmp_ctx);
1306 /***************************************************************************
1307 Build upon create_token_from_username:
1309 Expensive helper function to figure out whether a user given its name is
1310 member of a particular group.
1311 ***************************************************************************/
1313 BOOL user_in_group_sid(const char *username, const DOM_SID *group_sid)
1318 char *found_username;
1319 struct nt_user_token *token;
1322 TALLOC_CTX *mem_ctx;
1324 mem_ctx = talloc_new(NULL);
1325 if (mem_ctx == NULL) {
1326 DEBUG(0, ("talloc_new failed\n"));
1330 status = create_token_from_username(mem_ctx, username, False,
1331 &uid, &gid, &found_username,
1334 if (!NT_STATUS_IS_OK(status)) {
1335 DEBUG(10, ("could not create token for %s\n", username));
1339 result = nt_token_check_sid(group_sid, token);
1341 TALLOC_FREE(mem_ctx);
1346 BOOL user_in_group(const char *username, const char *groupname)
1348 TALLOC_CTX *mem_ctx;
1352 mem_ctx = talloc_new(NULL);
1353 if (mem_ctx == NULL) {
1354 DEBUG(0, ("talloc_new failed\n"));
1358 ret = lookup_name(mem_ctx, groupname, LOOKUP_NAME_ALL,
1359 NULL, NULL, &group_sid, NULL);
1360 TALLOC_FREE(mem_ctx);
1363 DEBUG(10, ("lookup_name for (%s) failed.\n", groupname));
1367 return user_in_group_sid(username, &group_sid);
1371 /***************************************************************************
1372 Make (and fill) a user_info struct from a 'struct passwd' by conversion
1374 ***************************************************************************/
1376 NTSTATUS make_server_info_pw(auth_serversupplied_info **server_info,
1377 char *unix_username,
1381 struct samu *sampass = NULL;
1383 auth_serversupplied_info *result;
1385 if ( !(sampass = samu_new( NULL )) ) {
1386 return NT_STATUS_NO_MEMORY;
1389 status = samu_set_unix( sampass, pwd );
1390 if (!NT_STATUS_IS_OK(status)) {
1394 result = make_server_info(NULL);
1395 if (result == NULL) {
1396 TALLOC_FREE(sampass);
1397 return NT_STATUS_NO_MEMORY;
1400 result->sam_account = sampass;
1401 result->unix_name = talloc_strdup(result, unix_username);
1402 result->uid = pwd->pw_uid;
1403 result->gid = pwd->pw_gid;
1405 status = pdb_enum_group_memberships(result, sampass,
1406 &result->sids, &gids,
1409 if (!NT_STATUS_IS_OK(status)) {
1410 DEBUG(10, ("pdb_enum_group_memberships failed: %s\n",
1411 nt_errstr(status)));
1412 TALLOC_FREE(result);
1416 /* For now we throw away the gids and convert via sid_to_gid
1417 * later. This needs fixing, but I'd like to get the code straight and
1421 *server_info = result;
1423 return NT_STATUS_OK;
1426 /***************************************************************************
1427 Make (and fill) a user_info struct for a guest login.
1428 This *must* succeed for smbd to start. If there is no mapping entry for
1429 the guest gid, then create one.
1430 ***************************************************************************/
1432 static NTSTATUS make_new_server_info_guest(auth_serversupplied_info **server_info)
1435 struct samu *sampass = NULL;
1438 static const char zeros[16] = { 0, };
1440 if ( !(sampass = samu_new( NULL )) ) {
1441 return NT_STATUS_NO_MEMORY;
1444 sid_copy(&guest_sid, get_global_sam_sid());
1445 sid_append_rid(&guest_sid, DOMAIN_USER_RID_GUEST);
1448 ret = pdb_getsampwsid(sampass, &guest_sid);
1452 TALLOC_FREE(sampass);
1453 return NT_STATUS_NO_SUCH_USER;
1456 status = make_server_info_sam(server_info, sampass);
1457 if (!NT_STATUS_IS_OK(status)) {
1458 TALLOC_FREE(sampass);
1462 (*server_info)->guest = True;
1464 status = create_local_token(*server_info);
1465 if (!NT_STATUS_IS_OK(status)) {
1466 DEBUG(10, ("create_local_token failed: %s\n",
1467 nt_errstr(status)));
1471 /* annoying, but the Guest really does have a session key, and it is
1473 (*server_info)->user_session_key = data_blob(zeros, sizeof(zeros));
1474 (*server_info)->lm_session_key = data_blob(zeros, sizeof(zeros));
1476 return NT_STATUS_OK;
1479 static auth_serversupplied_info *copy_serverinfo(auth_serversupplied_info *src)
1481 auth_serversupplied_info *dst;
1483 dst = make_server_info(NULL);
1488 dst->guest = src->guest;
1489 dst->uid = src->uid;
1490 dst->gid = src->gid;
1491 dst->n_groups = src->n_groups;
1492 if (src->n_groups != 0) {
1493 dst->groups = (gid_t *)talloc_memdup(
1494 dst, src->groups, sizeof(gid_t)*dst->n_groups);
1500 dst->ptok = dup_nt_token(dst, src->ptok);
1507 dst->user_session_key = data_blob_talloc( dst, src->user_session_key.data,
1508 src->user_session_key.length);
1510 dst->lm_session_key = data_blob_talloc(dst, src->lm_session_key.data,
1511 src->lm_session_key.length);
1513 dst->sam_account = samu_new(NULL);
1514 if (!dst->sam_account) {
1519 if (!pdb_copy_sam_account(dst->sam_account, src->sam_account)) {
1524 dst->pam_handle = NULL;
1525 dst->unix_name = talloc_strdup(dst, src->unix_name);
1526 if (!dst->unix_name) {
1534 static auth_serversupplied_info *guest_info = NULL;
1536 BOOL init_guest_info(void)
1538 if (guest_info != NULL)
1541 return NT_STATUS_IS_OK(make_new_server_info_guest(&guest_info));
1544 NTSTATUS make_server_info_guest(auth_serversupplied_info **server_info)
1546 *server_info = copy_serverinfo(guest_info);
1547 return (*server_info != NULL) ? NT_STATUS_OK : NT_STATUS_NO_MEMORY;
1550 BOOL copy_current_user(struct current_user *dst, struct current_user *src)
1553 NT_USER_TOKEN *nt_token;
1555 groups = (gid_t *)memdup(src->ut.groups,
1556 sizeof(gid_t) * src->ut.ngroups);
1557 if ((src->ut.ngroups != 0) && (groups == NULL)) {
1561 nt_token = dup_nt_token(NULL, src->nt_user_token);
1562 if (nt_token == NULL) {
1567 dst->conn = src->conn;
1568 dst->vuid = src->vuid;
1569 dst->ut.uid = src->ut.uid;
1570 dst->ut.gid = src->ut.gid;
1571 dst->ut.ngroups = src->ut.ngroups;
1572 dst->ut.groups = groups;
1573 dst->nt_user_token = nt_token;
1577 BOOL set_current_user_guest(struct current_user *dst)
1580 NT_USER_TOKEN *nt_token;
1582 groups = (gid_t *)memdup(guest_info->groups,
1583 sizeof(gid_t) * guest_info->n_groups);
1584 if (groups == NULL) {
1588 nt_token = dup_nt_token(NULL, guest_info->ptok);
1589 if (nt_token == NULL) {
1594 TALLOC_FREE(dst->nt_user_token);
1595 SAFE_FREE(dst->ut.groups);
1597 /* dst->conn is never really dereferenced, it's only tested for
1598 * equality in uid.c */
1601 dst->vuid = UID_FIELD_INVALID;
1602 dst->ut.uid = guest_info->uid;
1603 dst->ut.gid = guest_info->gid;
1604 dst->ut.ngroups = guest_info->n_groups;
1605 dst->ut.groups = groups;
1606 dst->nt_user_token = nt_token;
1610 /***************************************************************************
1611 Purely internal function for make_server_info_info3
1612 Fill the sam account from getpwnam
1613 ***************************************************************************/
1614 static NTSTATUS fill_sam_account(TALLOC_CTX *mem_ctx,
1616 const char *username,
1617 char **found_username,
1618 uid_t *uid, gid_t *gid,
1619 struct samu *account,
1620 BOOL *username_was_mapped)
1623 fstring dom_user, lower_username;
1624 fstring real_username;
1625 struct passwd *passwd;
1627 fstrcpy( lower_username, username );
1628 strlower_m( lower_username );
1630 fstr_sprintf(dom_user, "%s%c%s", domain, *lp_winbind_separator(),
1633 /* Get the passwd struct. Try to create the account is necessary. */
1635 *username_was_mapped = map_username( dom_user );
1637 if ( !(passwd = smb_getpwnam( NULL, dom_user, real_username, True )) )
1638 return NT_STATUS_NO_SUCH_USER;
1640 *uid = passwd->pw_uid;
1641 *gid = passwd->pw_gid;
1643 /* This is pointless -- there is no suport for differing
1644 unix and windows names. Make sure to always store the
1645 one we actually looked up and succeeded. Have I mentioned
1646 why I hate the 'winbind use default domain' parameter?
1649 *found_username = talloc_strdup( mem_ctx, real_username );
1651 DEBUG(5,("fill_sam_account: located username was [%s]\n", *found_username));
1653 nt_status = samu_set_unix( account, passwd );
1655 TALLOC_FREE(passwd);
1660 /****************************************************************************
1661 Wrapper to allow the getpwnam() call to strip the domain name and
1662 try again in case a local UNIX user is already there. Also run through
1663 the username if we fallback to the username only.
1664 ****************************************************************************/
1666 struct passwd *smb_getpwnam( TALLOC_CTX *mem_ctx, char *domuser,
1667 fstring save_username, BOOL create )
1669 struct passwd *pw = NULL;
1673 /* we only save a copy of the username it has been mangled
1674 by winbindd use default domain */
1676 save_username[0] = '\0';
1678 /* don't call map_username() here since it has to be done higher
1679 up the stack so we don't call it mutliple times */
1681 fstrcpy( username, domuser );
1683 p = strchr_m( username, *lp_winbind_separator() );
1685 /* code for a DOMAIN\user string */
1688 fstring strip_username;
1690 pw = Get_Pwnam_alloc( mem_ctx, domuser );
1692 /* make sure we get the case of the username correct */
1693 /* work around 'winbind use default domain = yes' */
1695 if ( !strchr_m( pw->pw_name, *lp_winbind_separator() ) ) {
1698 /* split the domain and username into 2 strings */
1702 fstr_sprintf(save_username, "%s%c%s", domain, *lp_winbind_separator(), pw->pw_name);
1705 fstrcpy( save_username, pw->pw_name );
1711 /* setup for lookup of just the username */
1712 /* remember that p and username are overlapping memory */
1715 fstrcpy( strip_username, p );
1716 fstrcpy( username, strip_username );
1719 /* just lookup a plain username */
1721 pw = Get_Pwnam_alloc(mem_ctx, username);
1723 /* Create local user if requested but only if winbindd
1724 is not running. We need to protect against cases
1725 where winbindd is failing and then prematurely
1726 creating users in /etc/passwd */
1728 if ( !pw && create && !winbind_ping() ) {
1729 /* Don't add a machine account. */
1730 if (username[strlen(username)-1] == '$')
1733 smb_create_user(NULL, username, NULL);
1734 pw = Get_Pwnam_alloc(mem_ctx, username);
1737 /* one last check for a valid passwd struct */
1740 fstrcpy( save_username, pw->pw_name );
1745 /***************************************************************************
1746 Make a server_info struct from the info3 returned by a domain logon
1747 ***************************************************************************/
1749 NTSTATUS make_server_info_info3(TALLOC_CTX *mem_ctx,
1750 const char *sent_nt_username,
1752 auth_serversupplied_info **server_info,
1753 NET_USER_INFO_3 *info3)
1755 static const char zeros[16] = { 0, };
1757 NTSTATUS nt_status = NT_STATUS_OK;
1758 char *found_username;
1759 const char *nt_domain;
1760 const char *nt_username;
1761 struct samu *sam_account = NULL;
1764 BOOL username_was_mapped;
1771 auth_serversupplied_info *result;
1774 Here is where we should check the list of
1775 trusted domains, and verify that the SID
1779 sid_copy(&user_sid, &info3->dom_sid.sid);
1780 if (!sid_append_rid(&user_sid, info3->user_rid)) {
1781 return NT_STATUS_INVALID_PARAMETER;
1784 sid_copy(&group_sid, &info3->dom_sid.sid);
1785 if (!sid_append_rid(&group_sid, info3->group_rid)) {
1786 return NT_STATUS_INVALID_PARAMETER;
1789 if (!(nt_username = unistr2_tdup(mem_ctx, &(info3->uni_user_name)))) {
1790 /* If the server didn't give us one, just use the one we sent
1792 nt_username = sent_nt_username;
1795 if (!(nt_domain = unistr2_tdup(mem_ctx, &(info3->uni_logon_dom)))) {
1796 /* If the server didn't give us one, just use the one we sent
1801 /* try to fill the SAM account.. If getpwnam() fails, then try the
1802 add user script (2.2.x behavior).
1804 We use the _unmapped_ username here in an attempt to provide
1805 consistent username mapping behavior between kerberos and NTLM[SSP]
1806 authentication in domain mode security. I.E. Username mapping
1807 should be applied to the fully qualified username
1808 (e.g. DOMAIN\user) and not just the login name. Yes this means we
1809 called map_username() unnecessarily in make_user_info_map() but
1810 that is how the current code is designed. Making the change here
1811 is the least disruptive place. -- jerry */
1813 if ( !(sam_account = samu_new( NULL )) ) {
1814 return NT_STATUS_NO_MEMORY;
1817 /* this call will try to create the user if necessary */
1819 nt_status = fill_sam_account(mem_ctx, nt_domain, sent_nt_username,
1820 &found_username, &uid, &gid, sam_account,
1821 &username_was_mapped);
1824 /* if we still don't have a valid unix account check for
1825 'map to guest = bad uid' */
1827 if (!NT_STATUS_IS_OK(nt_status)) {
1828 TALLOC_FREE( sam_account );
1829 if ( lp_map_to_guest() == MAP_TO_GUEST_ON_BAD_UID ) {
1830 make_server_info_guest(server_info);
1831 return NT_STATUS_OK;
1836 if (!pdb_set_nt_username(sam_account, nt_username, PDB_CHANGED)) {
1837 TALLOC_FREE(sam_account);
1838 return NT_STATUS_NO_MEMORY;
1841 if (!pdb_set_username(sam_account, nt_username, PDB_CHANGED)) {
1842 TALLOC_FREE(sam_account);
1843 return NT_STATUS_NO_MEMORY;
1846 if (!pdb_set_domain(sam_account, nt_domain, PDB_CHANGED)) {
1847 TALLOC_FREE(sam_account);
1848 return NT_STATUS_NO_MEMORY;
1851 if (!pdb_set_user_sid(sam_account, &user_sid, PDB_CHANGED)) {
1852 TALLOC_FREE(sam_account);
1853 return NT_STATUS_UNSUCCESSFUL;
1856 if (!pdb_set_group_sid(sam_account, &group_sid, PDB_CHANGED)) {
1857 TALLOC_FREE(sam_account);
1858 return NT_STATUS_UNSUCCESSFUL;
1861 if (!pdb_set_fullname(sam_account,
1862 unistr2_static(&(info3->uni_full_name)),
1864 TALLOC_FREE(sam_account);
1865 return NT_STATUS_NO_MEMORY;
1868 if (!pdb_set_logon_script(sam_account,
1869 unistr2_static(&(info3->uni_logon_script)),
1871 TALLOC_FREE(sam_account);
1872 return NT_STATUS_NO_MEMORY;
1875 if (!pdb_set_profile_path(sam_account,
1876 unistr2_static(&(info3->uni_profile_path)),
1878 TALLOC_FREE(sam_account);
1879 return NT_STATUS_NO_MEMORY;
1882 if (!pdb_set_homedir(sam_account,
1883 unistr2_static(&(info3->uni_home_dir)),
1885 TALLOC_FREE(sam_account);
1886 return NT_STATUS_NO_MEMORY;
1889 if (!pdb_set_dir_drive(sam_account,
1890 unistr2_static(&(info3->uni_dir_drive)),
1892 TALLOC_FREE(sam_account);
1893 return NT_STATUS_NO_MEMORY;
1896 if (!pdb_set_acct_ctrl(sam_account, info3->acct_flags, PDB_CHANGED)) {
1897 TALLOC_FREE(sam_account);
1898 return NT_STATUS_NO_MEMORY;
1901 result = make_server_info(NULL);
1902 if (result == NULL) {
1903 DEBUG(4, ("make_server_info failed!\n"));
1904 TALLOC_FREE(sam_account);
1905 return NT_STATUS_NO_MEMORY;
1908 /* save this here to _net_sam_logon() doesn't fail (it assumes a
1909 valid struct samu) */
1911 result->sam_account = sam_account;
1912 result->unix_name = talloc_strdup(result, found_username);
1914 /* Fill in the unix info we found on the way */
1919 /* Create a 'combined' list of all SIDs we might want in the SD */
1921 result->num_sids = 0;
1922 result->sids = NULL;
1924 /* and create (by appending rids) the 'domain' sids */
1926 for (i = 0; i < info3->num_groups2; i++) {
1928 if (!sid_compose(&sid, &info3->dom_sid.sid,
1929 info3->gids[i].g_rid)) {
1930 DEBUG(3,("could not append additional group rid "
1931 "0x%x\n", info3->gids[i].g_rid));
1932 TALLOC_FREE(result);
1933 return NT_STATUS_INVALID_PARAMETER;
1935 if (!add_sid_to_array(result, &sid, &result->sids,
1936 &result->num_sids)) {
1937 TALLOC_FREE(result);
1938 return NT_STATUS_NO_MEMORY;
1942 /* Copy 'other' sids. We need to do sid filtering here to
1943 prevent possible elevation of privileges. See:
1945 http://www.microsoft.com/windows2000/techinfo/administration/security/sidfilter.asp
1948 for (i = 0; i < info3->num_other_sids; i++) {
1949 if (!add_sid_to_array(result, &info3->other_sids[i].sid,
1951 &result->num_sids)) {
1952 TALLOC_FREE(result);
1953 return NT_STATUS_NO_MEMORY;
1957 result->login_server = unistr2_tdup(result,
1958 &(info3->uni_logon_srv));
1960 /* ensure we are never given NULL session keys */
1962 if (memcmp(info3->user_sess_key, zeros, sizeof(zeros)) == 0) {
1963 result->user_session_key = data_blob(NULL, 0);
1965 result->user_session_key = data_blob_talloc(
1966 result, info3->user_sess_key,
1967 sizeof(info3->user_sess_key));
1970 if (memcmp(info3->lm_sess_key, zeros, 8) == 0) {
1971 result->lm_session_key = data_blob(NULL, 0);
1973 result->lm_session_key = data_blob_talloc(
1974 result, info3->lm_sess_key,
1975 sizeof(info3->lm_sess_key));
1978 result->was_mapped = username_was_mapped;
1980 *server_info = result;
1982 return NT_STATUS_OK;
1985 /***************************************************************************
1986 Free a user_info struct
1987 ***************************************************************************/
1989 void free_user_info(auth_usersupplied_info **user_info)
1991 DEBUG(5,("attempting to free (and zero) a user_info structure\n"));
1992 if (*user_info != NULL) {
1993 if ((*user_info)->smb_name) {
1994 DEBUG(10,("structure was created for %s\n",
1995 (*user_info)->smb_name));
1997 SAFE_FREE((*user_info)->smb_name);
1998 SAFE_FREE((*user_info)->internal_username);
1999 SAFE_FREE((*user_info)->client_domain);
2000 SAFE_FREE((*user_info)->domain);
2001 SAFE_FREE((*user_info)->wksta_name);
2002 data_blob_free(&(*user_info)->lm_resp);
2003 data_blob_free(&(*user_info)->nt_resp);
2004 data_blob_clear_free(&(*user_info)->lm_interactive_pwd);
2005 data_blob_clear_free(&(*user_info)->nt_interactive_pwd);
2006 data_blob_clear_free(&(*user_info)->plaintext_password);
2007 ZERO_STRUCT(**user_info);
2009 SAFE_FREE(*user_info);
2012 /***************************************************************************
2013 Make an auth_methods struct
2014 ***************************************************************************/
2016 BOOL make_auth_methods(struct auth_context *auth_context, auth_methods **auth_method)
2018 if (!auth_context) {
2019 smb_panic("no auth_context supplied to "
2020 "make_auth_methods()!\n");
2024 smb_panic("make_auth_methods: pointer to auth_method pointer "
2028 *auth_method = TALLOC_P(auth_context->mem_ctx, auth_methods);
2029 if (!*auth_method) {
2030 DEBUG(0,("make_auth_method: malloc failed!\n"));
2033 ZERO_STRUCTP(*auth_method);
2038 /****************************************************************************
2039 Duplicate a SID token.
2040 ****************************************************************************/
2042 NT_USER_TOKEN *dup_nt_token(TALLOC_CTX *mem_ctx, const NT_USER_TOKEN *ptoken)
2044 NT_USER_TOKEN *token;
2049 token = TALLOC_P(mem_ctx, NT_USER_TOKEN);
2050 if (token == NULL) {
2051 DEBUG(0, ("talloc failed\n"));
2055 ZERO_STRUCTP(token);
2057 if (ptoken->user_sids && ptoken->num_sids) {
2058 token->user_sids = (DOM_SID *)talloc_memdup(
2059 token, ptoken->user_sids, sizeof(DOM_SID) * ptoken->num_sids );
2061 if (token->user_sids == NULL) {
2062 DEBUG(0, ("talloc_memdup failed\n"));
2066 token->num_sids = ptoken->num_sids;
2069 /* copy the privileges; don't consider failure to be critical here */
2071 if ( !se_priv_copy( &token->privileges, &ptoken->privileges ) ) {
2072 DEBUG(0,("dup_nt_token: Failure to copy SE_PRIV!. "
2073 "Continuing with 0 privileges assigned.\n"));
2079 /****************************************************************************
2080 Check for a SID in an NT_USER_TOKEN
2081 ****************************************************************************/
2083 BOOL nt_token_check_sid ( const DOM_SID *sid, const NT_USER_TOKEN *token )
2087 if ( !sid || !token )
2090 for ( i=0; i<token->num_sids; i++ ) {
2091 if ( sid_equal( sid, &token->user_sids[i] ) )
2098 BOOL nt_token_check_domain_rid( NT_USER_TOKEN *token, uint32 rid )
2102 /* if we are a domain member, the get the domain SID, else for
2103 a DC or standalone server, use our own SID */
2105 if ( lp_server_role() == ROLE_DOMAIN_MEMBER ) {
2106 if ( !secrets_fetch_domain_sid( lp_workgroup(),
2108 DEBUG(1,("nt_token_check_domain_rid: Cannot lookup "
2109 "SID for domain [%s]\n", lp_workgroup()));
2114 sid_copy( &domain_sid, get_global_sam_sid() );
2116 sid_append_rid( &domain_sid, rid );
2118 return nt_token_check_sid( &domain_sid, token );\
2122 * Verify whether or not given domain is trusted.
2124 * @param domain_name name of the domain to be verified
2125 * @return true if domain is one of the trusted once or
2126 * false if otherwise
2129 BOOL is_trusted_domain(const char* dom_name)
2131 DOM_SID trustdom_sid;
2134 /* no trusted domains for a standalone server */
2136 if ( lp_server_role() == ROLE_STANDALONE )
2139 /* if we are a DC, then check for a direct trust relationships */
2143 DEBUG (5,("is_trusted_domain: Checking for domain trust with "
2144 "[%s]\n", dom_name ));
2145 ret = pdb_get_trusteddom_pw(dom_name, NULL, NULL, NULL);
2153 /* If winbind is around, ask it */
2155 result = wb_is_trusted_domain(dom_name);
2157 if (result == NSS_STATUS_SUCCESS) {
2161 if (result == NSS_STATUS_NOTFOUND) {
2162 /* winbind could not find the domain */
2166 /* The only other possible result is that winbind is not up
2167 and running. We need to update the trustdom_cache
2170 update_trustdom_cache();
2173 /* now the trustdom cache should be available a DC could still
2174 * have a transitive trust so fall back to the cache of trusted
2175 * domains (like a domain member would use */
2177 if ( trustdom_cache_fetch(dom_name, &trustdom_sid) ) {