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 3 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, see <http://www.gnu.org/licenses/>.
25 #include "smbd/globals.h"
26 #include "../libcli/auth/libcli_auth.h"
27 #include "../lib/crypto/arcfour.h"
28 #include "rpc_client/init_lsa.h"
29 #include "../libcli/security/dom_sid.h"
32 #define DBGC_CLASS DBGC_AUTH
34 /****************************************************************************
35 Create a UNIX user on demand.
36 ****************************************************************************/
38 static int _smb_create_user(const char *domain, const char *unix_username, const char *homedir)
40 TALLOC_CTX *ctx = talloc_tos();
44 add_script = talloc_strdup(ctx, lp_adduser_script());
45 if (!add_script || !*add_script) {
48 add_script = talloc_all_string_sub(ctx,
56 add_script = talloc_all_string_sub(ctx,
65 add_script = talloc_all_string_sub(ctx,
73 ret = smbrun(add_script,NULL);
76 ("smb_create_user: Running the command `%s' gave %d\n",
81 /****************************************************************************
82 Create an auth_usersupplied_data structure after appropriate mapping.
83 ****************************************************************************/
85 NTSTATUS make_user_info_map(struct auth_usersupplied_info **user_info,
87 const char *client_domain,
88 const char *workstation_name,
91 const struct samr_Password *lm_interactive_pwd,
92 const struct samr_Password *nt_interactive_pwd,
93 const char *plaintext,
94 enum auth_password_state password_state)
99 fstring internal_username;
100 fstrcpy(internal_username, smb_name);
101 was_mapped = map_username(internal_username);
103 DEBUG(5, ("Mapping user [%s]\\[%s] from workstation [%s]\n",
104 client_domain, smb_name, workstation_name));
106 domain = client_domain;
108 /* If you connect to a Windows domain member using a bogus domain name,
109 * the Windows box will map the BOGUS\user to SAMNAME\user. Thus, if
110 * the Windows box is a DC the name will become DOMAIN\user and be
111 * authenticated against AD, if the Windows box is a member server but
112 * not a DC the name will become WORKSTATION\user. A standalone
113 * non-domain member box will also map to WORKSTATION\user.
114 * This also deals with the client passing in a "" domain */
116 if (!is_trusted_domain(domain) &&
117 !strequal(domain, my_sam_name()))
119 if (lp_map_untrusted_to_domain())
120 domain = my_sam_name();
122 domain = get_global_sam_name();
123 DEBUG(5, ("Mapped domain from [%s] to [%s] for user [%s] from "
124 "workstation [%s]\n",
125 client_domain, domain, smb_name, workstation_name));
128 /* We know that the given domain is trusted (and we are allowing them),
129 * it is our global SAM name, or for legacy behavior it is our
130 * primary domain name */
132 result = make_user_info(user_info, smb_name, internal_username,
133 client_domain, domain, workstation_name,
135 lm_interactive_pwd, nt_interactive_pwd,
136 plaintext, password_state);
137 if (NT_STATUS_IS_OK(result)) {
138 /* We have tried mapping */
139 (*user_info)->mapped_state = True;
140 /* did we actually map the user to a different name? */
141 (*user_info)->was_mapped = was_mapped;
146 /****************************************************************************
147 Create an auth_usersupplied_data, making the DATA_BLOBs here.
148 Decrypt and encrypt the passwords.
149 ****************************************************************************/
151 bool make_user_info_netlogon_network(struct auth_usersupplied_info **user_info,
152 const char *smb_name,
153 const char *client_domain,
154 const char *workstation_name,
155 uint32 logon_parameters,
156 const uchar *lm_network_pwd,
158 const uchar *nt_network_pwd,
163 DATA_BLOB lm_blob = data_blob(lm_network_pwd, lm_pwd_len);
164 DATA_BLOB nt_blob = data_blob(nt_network_pwd, nt_pwd_len);
166 status = make_user_info_map(user_info,
167 smb_name, client_domain,
169 lm_pwd_len ? &lm_blob : NULL,
170 nt_pwd_len ? &nt_blob : NULL,
172 AUTH_PASSWORD_RESPONSE);
174 if (NT_STATUS_IS_OK(status)) {
175 (*user_info)->logon_parameters = logon_parameters;
177 ret = NT_STATUS_IS_OK(status) ? True : False;
179 data_blob_free(&lm_blob);
180 data_blob_free(&nt_blob);
184 /****************************************************************************
185 Create an auth_usersupplied_data, making the DATA_BLOBs here.
186 Decrypt and encrypt the passwords.
187 ****************************************************************************/
189 bool make_user_info_netlogon_interactive(struct auth_usersupplied_info **user_info,
190 const char *smb_name,
191 const char *client_domain,
192 const char *workstation_name,
193 uint32 logon_parameters,
195 const uchar lm_interactive_pwd[16],
196 const uchar nt_interactive_pwd[16],
197 const uchar *dc_sess_key)
199 struct samr_Password lm_pwd;
200 struct samr_Password nt_pwd;
201 unsigned char local_lm_response[24];
202 unsigned char local_nt_response[24];
203 unsigned char key[16];
205 memcpy(key, dc_sess_key, 16);
207 if (lm_interactive_pwd)
208 memcpy(lm_pwd.hash, lm_interactive_pwd, sizeof(lm_pwd.hash));
210 if (nt_interactive_pwd)
211 memcpy(nt_pwd.hash, nt_interactive_pwd, sizeof(nt_pwd.hash));
213 #ifdef DEBUG_PASSWORD
215 dump_data(100, key, sizeof(key));
217 DEBUG(100,("lm owf password:"));
218 dump_data(100, lm_pwd.hash, sizeof(lm_pwd.hash));
220 DEBUG(100,("nt owf password:"));
221 dump_data(100, nt_pwd.hash, sizeof(nt_pwd.hash));
224 if (lm_interactive_pwd)
225 arcfour_crypt(lm_pwd.hash, key, sizeof(lm_pwd.hash));
227 if (nt_interactive_pwd)
228 arcfour_crypt(nt_pwd.hash, key, sizeof(nt_pwd.hash));
230 #ifdef DEBUG_PASSWORD
231 DEBUG(100,("decrypt of lm owf password:"));
232 dump_data(100, lm_pwd.hash, sizeof(lm_pwd));
234 DEBUG(100,("decrypt of nt owf password:"));
235 dump_data(100, nt_pwd.hash, sizeof(nt_pwd));
238 if (lm_interactive_pwd)
239 SMBOWFencrypt(lm_pwd.hash, chal,
242 if (nt_interactive_pwd)
243 SMBOWFencrypt(nt_pwd.hash, chal,
246 /* Password info paranoia */
252 DATA_BLOB local_lm_blob;
253 DATA_BLOB local_nt_blob;
255 if (lm_interactive_pwd) {
256 local_lm_blob = data_blob(local_lm_response,
257 sizeof(local_lm_response));
260 if (nt_interactive_pwd) {
261 local_nt_blob = data_blob(local_nt_response,
262 sizeof(local_nt_response));
265 nt_status = make_user_info_map(
267 smb_name, client_domain, workstation_name,
268 lm_interactive_pwd ? &local_lm_blob : NULL,
269 nt_interactive_pwd ? &local_nt_blob : NULL,
270 lm_interactive_pwd ? &lm_pwd : NULL,
271 nt_interactive_pwd ? &nt_pwd : NULL,
272 NULL, AUTH_PASSWORD_HASH);
274 if (NT_STATUS_IS_OK(nt_status)) {
275 (*user_info)->logon_parameters = logon_parameters;
278 ret = NT_STATUS_IS_OK(nt_status) ? True : False;
279 data_blob_free(&local_lm_blob);
280 data_blob_free(&local_nt_blob);
286 /****************************************************************************
287 Create an auth_usersupplied_data structure
288 ****************************************************************************/
290 bool make_user_info_for_reply(struct auth_usersupplied_info **user_info,
291 const char *smb_name,
292 const char *client_domain,
294 DATA_BLOB plaintext_password)
297 DATA_BLOB local_lm_blob;
298 DATA_BLOB local_nt_blob;
299 NTSTATUS ret = NT_STATUS_UNSUCCESSFUL;
300 char *plaintext_password_string;
302 * Not encrypted - do so.
305 DEBUG(5,("make_user_info_for_reply: User passwords not in encrypted "
307 if (plaintext_password.data && plaintext_password.length) {
308 unsigned char local_lm_response[24];
310 #ifdef DEBUG_PASSWORD
311 DEBUG(10,("Unencrypted password (len %d):\n",
312 (int)plaintext_password.length));
313 dump_data(100, plaintext_password.data,
314 plaintext_password.length);
317 SMBencrypt( (const char *)plaintext_password.data,
318 (const uchar*)chal, local_lm_response);
319 local_lm_blob = data_blob(local_lm_response, 24);
321 /* We can't do an NT hash here, as the password needs to be
323 local_nt_blob = data_blob_null;
325 local_lm_blob = data_blob_null;
326 local_nt_blob = data_blob_null;
329 plaintext_password_string = talloc_strndup(talloc_tos(),
330 (const char *)plaintext_password.data,
331 plaintext_password.length);
332 if (!plaintext_password_string) {
336 ret = make_user_info_map(
337 user_info, smb_name, client_domain,
338 get_remote_machine_name(),
339 local_lm_blob.data ? &local_lm_blob : NULL,
340 local_nt_blob.data ? &local_nt_blob : NULL,
342 plaintext_password_string,
343 AUTH_PASSWORD_PLAIN);
345 if (plaintext_password_string) {
346 memset(plaintext_password_string, '\0', strlen(plaintext_password_string));
347 talloc_free(plaintext_password_string);
350 data_blob_free(&local_lm_blob);
351 return NT_STATUS_IS_OK(ret) ? True : False;
354 /****************************************************************************
355 Create an auth_usersupplied_data structure
356 ****************************************************************************/
358 NTSTATUS make_user_info_for_reply_enc(struct auth_usersupplied_info **user_info,
359 const char *smb_name,
360 const char *client_domain,
361 DATA_BLOB lm_resp, DATA_BLOB nt_resp)
363 return make_user_info_map(user_info, smb_name,
365 get_remote_machine_name(),
366 lm_resp.data && (lm_resp.length > 0) ? &lm_resp : NULL,
367 nt_resp.data && (nt_resp.length > 0) ? &nt_resp : NULL,
369 AUTH_PASSWORD_RESPONSE);
372 /****************************************************************************
373 Create a guest user_info blob, for anonymous authenticaion.
374 ****************************************************************************/
376 bool make_user_info_guest(struct auth_usersupplied_info **user_info)
380 nt_status = make_user_info(user_info,
387 AUTH_PASSWORD_RESPONSE);
389 return NT_STATUS_IS_OK(nt_status) ? True : False;
392 static NTSTATUS log_nt_token(struct security_token *token)
394 TALLOC_CTX *frame = talloc_stackframe();
399 if ((lp_log_nt_token_command() == NULL) ||
400 (strlen(lp_log_nt_token_command()) == 0)) {
405 group_sidstr = talloc_strdup(frame, "");
406 for (i=1; i<token->num_sids; i++) {
407 group_sidstr = talloc_asprintf(
408 frame, "%s %s", group_sidstr,
409 sid_string_talloc(frame, &token->sids[i]));
412 command = talloc_string_sub(
413 frame, lp_log_nt_token_command(),
414 "%s", sid_string_talloc(frame, &token->sids[0]));
415 command = talloc_string_sub(frame, command, "%t", group_sidstr);
417 if (command == NULL) {
419 return NT_STATUS_NO_MEMORY;
422 DEBUG(8, ("running command: [%s]\n", command));
423 if (smbrun(command, NULL) != 0) {
424 DEBUG(0, ("Could not log NT token\n"));
426 return NT_STATUS_ACCESS_DENIED;
434 * Create the token to use from server_info->info3 and
435 * server_info->sids (the info3/sam groups). Find the unix gids.
438 NTSTATUS create_local_token(struct auth_serversupplied_info *server_info)
442 struct dom_sid tmp_sid;
445 * If winbind is not around, we can not make much use of the SIDs the
446 * domain controller provided us with. Likewise if the user name was
447 * mapped to some local unix user.
450 if (((lp_server_role() == ROLE_DOMAIN_MEMBER) && !winbind_ping()) ||
451 (server_info->nss_token)) {
452 status = create_token_from_username(server_info,
453 server_info->unix_name,
455 &server_info->utok.uid,
456 &server_info->utok.gid,
457 &server_info->unix_name,
461 status = create_local_nt_token_from_info3(server_info,
468 if (!NT_STATUS_IS_OK(status)) {
472 /* Convert the SIDs to gids. */
474 server_info->utok.ngroups = 0;
475 server_info->utok.groups = NULL;
477 /* Start at index 1, where the groups start. */
479 for (i=1; i<server_info->ptok->num_sids; i++) {
481 struct dom_sid *sid = &server_info->ptok->sids[i];
483 if (!sid_to_gid(sid, &gid)) {
484 DEBUG(10, ("Could not convert SID %s to gid, "
485 "ignoring it\n", sid_string_dbg(sid)));
488 add_gid_to_array_unique(server_info, gid,
489 &server_info->utok.groups,
490 &server_info->utok.ngroups);
494 * Add the "Unix Group" SID for each gid to catch mapped groups
495 * and their Unix equivalent. This is to solve the backwards
496 * compatibility problem of 'valid users = +ntadmin' where
497 * ntadmin has been paired with "Domain Admins" in the group
498 * mapping table. Otherwise smb.conf would need to be changed
499 * to 'valid user = "Domain Admins"'. --jerry
501 * For consistency we also add the "Unix User" SID,
502 * so that the complete unix token is represented within
506 uid_to_unix_users_sid(server_info->utok.uid, &tmp_sid);
508 add_sid_to_array_unique(server_info->ptok, &tmp_sid,
509 &server_info->ptok->sids,
510 &server_info->ptok->num_sids);
512 for ( i=0; i<server_info->utok.ngroups; i++ ) {
513 gid_to_unix_groups_sid(server_info->utok.groups[i], &tmp_sid);
514 add_sid_to_array_unique(server_info->ptok, &tmp_sid,
515 &server_info->ptok->sids,
516 &server_info->ptok->num_sids);
519 debug_nt_user_token(DBGC_AUTH, 10, server_info->ptok);
520 debug_unix_user_token(DBGC_AUTH, 10,
521 server_info->utok.uid,
522 server_info->utok.gid,
523 server_info->utok.ngroups,
524 server_info->utok.groups);
526 status = log_nt_token(server_info->ptok);
530 /***************************************************************************
531 Make (and fill) a server_info struct from a 'struct passwd' by conversion
533 ***************************************************************************/
535 NTSTATUS make_server_info_pw(struct auth_serversupplied_info **server_info,
540 struct samu *sampass = NULL;
541 char *qualified_name = NULL;
542 TALLOC_CTX *mem_ctx = NULL;
543 struct dom_sid u_sid;
544 enum lsa_SidType type;
545 struct auth_serversupplied_info *result;
548 * The SID returned in server_info->sam_account is based
549 * on our SAM sid even though for a pure UNIX account this should
550 * not be the case as it doesn't really exist in the SAM db.
551 * This causes lookups on "[in]valid users" to fail as they
552 * will lookup this name as a "Unix User" SID to check against
553 * the user token. Fix this by adding the "Unix User"\unix_username
554 * SID to the sid array. The correct fix should probably be
555 * changing the server_info->sam_account user SID to be a
556 * S-1-22 Unix SID, but this might break old configs where
557 * plaintext passwords were used with no SAM backend.
560 mem_ctx = talloc_init("make_server_info_pw_tmp");
562 return NT_STATUS_NO_MEMORY;
565 qualified_name = talloc_asprintf(mem_ctx, "%s\\%s",
566 unix_users_domain_name(),
568 if (!qualified_name) {
569 TALLOC_FREE(mem_ctx);
570 return NT_STATUS_NO_MEMORY;
573 if (!lookup_name(mem_ctx, qualified_name, LOOKUP_NAME_ALL,
576 TALLOC_FREE(mem_ctx);
577 return NT_STATUS_NO_SUCH_USER;
580 TALLOC_FREE(mem_ctx);
582 if (type != SID_NAME_USER) {
583 return NT_STATUS_NO_SUCH_USER;
586 if ( !(sampass = samu_new( NULL )) ) {
587 return NT_STATUS_NO_MEMORY;
590 status = samu_set_unix( sampass, pwd );
591 if (!NT_STATUS_IS_OK(status)) {
595 /* In pathological cases the above call can set the account
596 * name to the DOMAIN\username form. Reset the account name
597 * using unix_username */
598 pdb_set_username(sampass, unix_username, PDB_SET);
600 /* set the user sid to be the calculated u_sid */
601 pdb_set_user_sid(sampass, &u_sid, PDB_SET);
603 result = make_server_info(NULL);
604 if (result == NULL) {
605 TALLOC_FREE(sampass);
606 return NT_STATUS_NO_MEMORY;
609 status = samu_to_SamInfo3(result, sampass, global_myname(),
610 &result->info3, &result->extra);
611 TALLOC_FREE(sampass);
612 if (!NT_STATUS_IS_OK(status)) {
613 DEBUG(10, ("Failed to convert samu to info3: %s\n",
619 result->unix_name = talloc_strdup(result, unix_username);
620 result->sanitized_username = sanitize_username(result, unix_username);
622 if ((result->unix_name == NULL)
623 || (result->sanitized_username == NULL)) {
625 return NT_STATUS_NO_MEMORY;
628 result->utok.uid = pwd->pw_uid;
629 result->utok.gid = pwd->pw_gid;
631 *server_info = result;
636 static NTSTATUS get_guest_info3(TALLOC_CTX *mem_ctx,
637 struct netr_SamInfo3 *info3)
639 const char *guest_account = lp_guestaccount();
640 struct dom_sid domain_sid;
644 pwd = getpwnam_alloc(mem_ctx, guest_account);
646 DEBUG(0,("SamInfo3_for_guest: Unable to locate guest "
647 "account [%s]!\n", guest_account));
648 return NT_STATUS_NO_SUCH_USER;
651 /* Set acount name */
652 tmp = talloc_strdup(mem_ctx, pwd->pw_name);
654 return NT_STATUS_NO_MEMORY;
656 init_lsa_String(&info3->base.account_name, tmp);
658 /* Set domain name */
659 tmp = talloc_strdup(mem_ctx, get_global_sam_name());
661 return NT_STATUS_NO_MEMORY;
663 init_lsa_StringLarge(&info3->base.domain, tmp);
666 sid_copy(&domain_sid, get_global_sam_sid());
668 info3->base.domain_sid = dom_sid_dup(mem_ctx, &domain_sid);
669 if (info3->base.domain_sid == NULL) {
670 return NT_STATUS_NO_MEMORY;
674 info3->base.rid = DOMAIN_RID_GUEST;
677 info3->base.primary_gid = BUILTIN_RID_GUESTS;
683 /***************************************************************************
684 Make (and fill) a user_info struct for a guest login.
685 This *must* succeed for smbd to start. If there is no mapping entry for
686 the guest gid, then create one.
687 ***************************************************************************/
689 static NTSTATUS make_new_server_info_guest(struct auth_serversupplied_info **server_info)
691 static const char zeros[16] = {0};
692 const char *guest_account = lp_guestaccount();
693 const char *domain = global_myname();
694 struct netr_SamInfo3 info3;
699 tmp_ctx = talloc_stackframe();
700 if (tmp_ctx == NULL) {
701 return NT_STATUS_NO_MEMORY;
706 status = get_guest_info3(tmp_ctx, &info3);
707 if (!NT_STATUS_IS_OK(status)) {
711 status = make_server_info_info3(tmp_ctx,
716 if (!NT_STATUS_IS_OK(status)) {
720 (*server_info)->guest = True;
722 status = create_local_token(*server_info);
723 if (!NT_STATUS_IS_OK(status)) {
724 DEBUG(10, ("create_local_token failed: %s\n",
729 /* annoying, but the Guest really does have a session key, and it is
731 (*server_info)->user_session_key = data_blob(zeros, sizeof(zeros));
732 (*server_info)->lm_session_key = data_blob(zeros, sizeof(zeros));
734 alpha_strcpy(tmp, (*server_info)->info3->base.account_name.string,
735 ". _-$", sizeof(tmp));
736 (*server_info)->sanitized_username = talloc_strdup(*server_info, tmp);
738 status = NT_STATUS_OK;
740 TALLOC_FREE(tmp_ctx);
744 /***************************************************************************
745 Make (and fill) a user_info struct for a system user login.
746 This *must* succeed for smbd to start.
747 ***************************************************************************/
749 static NTSTATUS make_new_server_info_system(TALLOC_CTX *mem_ctx,
750 struct auth_serversupplied_info **server_info)
755 pwd = getpwuid_alloc(mem_ctx, sec_initial_uid());
757 return NT_STATUS_NO_MEMORY;
760 status = make_serverinfo_from_username(mem_ctx,
765 if (!NT_STATUS_IS_OK(status)) {
769 (*server_info)->system = true;
774 /****************************************************************************
775 Fake a auth_serversupplied_info just from a username
776 ****************************************************************************/
778 NTSTATUS make_serverinfo_from_username(TALLOC_CTX *mem_ctx,
779 const char *username,
781 struct auth_serversupplied_info **presult)
783 struct auth_serversupplied_info *result;
787 pwd = getpwnam_alloc(talloc_tos(), username);
789 return NT_STATUS_NO_SUCH_USER;
792 status = make_server_info_pw(&result, pwd->pw_name, pwd);
796 if (!NT_STATUS_IS_OK(status)) {
800 result->nss_token = true;
801 result->guest = is_guest;
803 status = create_local_token(result);
805 if (!NT_STATUS_IS_OK(status)) {
815 struct auth_serversupplied_info *copy_serverinfo(TALLOC_CTX *mem_ctx,
816 const struct auth_serversupplied_info *src)
818 struct auth_serversupplied_info *dst;
820 dst = make_server_info(mem_ctx);
825 dst->guest = src->guest;
826 dst->system = src->system;
827 dst->utok.uid = src->utok.uid;
828 dst->utok.gid = src->utok.gid;
829 dst->utok.ngroups = src->utok.ngroups;
830 if (src->utok.ngroups != 0) {
831 dst->utok.groups = (gid_t *)TALLOC_MEMDUP(
832 dst, src->utok.groups,
833 sizeof(gid_t)*dst->utok.ngroups);
835 dst->utok.groups = NULL;
839 dst->ptok = dup_nt_token(dst, src->ptok);
846 dst->user_session_key = data_blob_talloc( dst, src->user_session_key.data,
847 src->user_session_key.length);
849 dst->lm_session_key = data_blob_talloc(dst, src->lm_session_key.data,
850 src->lm_session_key.length);
852 dst->info3 = copy_netr_SamInfo3(dst, src->info3);
857 dst->extra = src->extra;
859 dst->pam_handle = NULL;
860 dst->unix_name = talloc_strdup(dst, src->unix_name);
861 if (!dst->unix_name) {
866 dst->sanitized_username = talloc_strdup(dst, src->sanitized_username);
867 if (!dst->sanitized_username) {
876 * Set a new session key. Used in the rpc server where we have to override the
877 * SMB level session key with SystemLibraryDTC
880 bool server_info_set_session_key(struct auth_serversupplied_info *info,
881 DATA_BLOB session_key)
883 TALLOC_FREE(info->user_session_key.data);
885 info->user_session_key = data_blob_talloc(
886 info, session_key.data, session_key.length);
888 return (info->user_session_key.data != NULL);
891 static struct auth_serversupplied_info *guest_info = NULL;
893 bool init_guest_info(void)
895 if (guest_info != NULL)
898 return NT_STATUS_IS_OK(make_new_server_info_guest(&guest_info));
901 NTSTATUS make_server_info_guest(TALLOC_CTX *mem_ctx,
902 struct auth_serversupplied_info **server_info)
904 *server_info = copy_serverinfo(mem_ctx, guest_info);
905 return (*server_info != NULL) ? NT_STATUS_OK : NT_STATUS_NO_MEMORY;
908 static struct auth_serversupplied_info *system_info = NULL;
910 bool init_system_info(void)
912 if (system_info != NULL)
915 return NT_STATUS_IS_OK(make_new_server_info_system(NULL,
919 NTSTATUS make_server_info_system(TALLOC_CTX *mem_ctx,
920 struct auth_serversupplied_info **server_info)
922 if (system_info == NULL) return NT_STATUS_UNSUCCESSFUL;
923 *server_info = copy_serverinfo(mem_ctx, system_info);
924 return (*server_info != NULL) ? NT_STATUS_OK : NT_STATUS_NO_MEMORY;
927 const struct auth_serversupplied_info *get_server_info_system(void)
932 bool copy_current_user(struct current_user *dst, struct current_user *src)
935 struct security_token *nt_token;
937 groups = (gid_t *)memdup(src->ut.groups,
938 sizeof(gid_t) * src->ut.ngroups);
939 if ((src->ut.ngroups != 0) && (groups == NULL)) {
943 nt_token = dup_nt_token(NULL, src->nt_user_token);
944 if (nt_token == NULL) {
949 dst->conn = src->conn;
950 dst->vuid = src->vuid;
951 dst->ut.uid = src->ut.uid;
952 dst->ut.gid = src->ut.gid;
953 dst->ut.ngroups = src->ut.ngroups;
954 dst->ut.groups = groups;
955 dst->nt_user_token = nt_token;
959 /***************************************************************************
960 Purely internal function for make_server_info_info3
961 ***************************************************************************/
963 static NTSTATUS check_account(TALLOC_CTX *mem_ctx, const char *domain,
964 const char *username, char **found_username,
966 bool *username_was_mapped)
968 fstring dom_user, lower_username;
969 fstring real_username;
970 struct passwd *passwd;
972 fstrcpy( lower_username, username );
973 strlower_m( lower_username );
975 fstr_sprintf(dom_user, "%s%c%s", domain, *lp_winbind_separator(),
978 /* Get the passwd struct. Try to create the account if necessary. */
980 *username_was_mapped = map_username(dom_user);
982 passwd = smb_getpwnam( NULL, dom_user, real_username, True );
984 DEBUG(3, ("Failed to find authenticated user %s via "
985 "getpwnam(), denying access.\n", dom_user));
986 return NT_STATUS_NO_SUCH_USER;
991 /* This is pointless -- there is no suport for differing
992 unix and windows names. Make sure to always store the
993 one we actually looked up and succeeded. Have I mentioned
994 why I hate the 'winbind use default domain' parameter?
997 *found_username = talloc_strdup( mem_ctx, real_username );
1002 /****************************************************************************
1003 Wrapper to allow the getpwnam() call to strip the domain name and
1004 try again in case a local UNIX user is already there. Also run through
1005 the username if we fallback to the username only.
1006 ****************************************************************************/
1008 struct passwd *smb_getpwnam( TALLOC_CTX *mem_ctx, const char *domuser,
1009 fstring save_username, bool create )
1011 struct passwd *pw = NULL;
1015 /* we only save a copy of the username it has been mangled
1016 by winbindd use default domain */
1018 save_username[0] = '\0';
1020 /* don't call map_username() here since it has to be done higher
1021 up the stack so we don't call it multiple times */
1023 fstrcpy( username, domuser );
1025 p = strchr_m( username, *lp_winbind_separator() );
1027 /* code for a DOMAIN\user string */
1030 fstring strip_username;
1032 pw = Get_Pwnam_alloc( mem_ctx, domuser );
1034 /* make sure we get the case of the username correct */
1035 /* work around 'winbind use default domain = yes' */
1037 if ( !strchr_m( pw->pw_name, *lp_winbind_separator() ) ) {
1040 /* split the domain and username into 2 strings */
1044 fstr_sprintf(save_username, "%s%c%s", domain, *lp_winbind_separator(), pw->pw_name);
1047 fstrcpy( save_username, pw->pw_name );
1053 /* setup for lookup of just the username */
1054 /* remember that p and username are overlapping memory */
1057 fstrcpy( strip_username, p );
1058 fstrcpy( username, strip_username );
1061 /* just lookup a plain username */
1063 pw = Get_Pwnam_alloc(mem_ctx, username);
1065 /* Create local user if requested but only if winbindd
1066 is not running. We need to protect against cases
1067 where winbindd is failing and then prematurely
1068 creating users in /etc/passwd */
1070 if ( !pw && create && !winbind_ping() ) {
1071 /* Don't add a machine account. */
1072 if (username[strlen(username)-1] == '$')
1075 _smb_create_user(NULL, username, NULL);
1076 pw = Get_Pwnam_alloc(mem_ctx, username);
1079 /* one last check for a valid passwd struct */
1082 fstrcpy( save_username, pw->pw_name );
1087 /***************************************************************************
1088 Make a server_info struct from the info3 returned by a domain logon
1089 ***************************************************************************/
1091 NTSTATUS make_server_info_info3(TALLOC_CTX *mem_ctx,
1092 const char *sent_nt_username,
1094 struct auth_serversupplied_info **server_info,
1095 struct netr_SamInfo3 *info3)
1097 static const char zeros[16] = {0, };
1099 NTSTATUS nt_status = NT_STATUS_OK;
1100 char *found_username = NULL;
1101 const char *nt_domain;
1102 const char *nt_username;
1103 bool username_was_mapped;
1105 struct auth_serversupplied_info *result;
1106 struct dom_sid *group_sid;
1107 struct netr_SamInfo3 *i3;
1110 Here is where we should check the list of
1111 trusted domains, and verify that the SID
1115 nt_username = talloc_strdup(mem_ctx, info3->base.account_name.string);
1117 /* If the server didn't give us one, just use the one we sent
1119 nt_username = sent_nt_username;
1122 nt_domain = talloc_strdup(mem_ctx, info3->base.domain.string);
1124 /* If the server didn't give us one, just use the one we sent
1129 /* If getpwnam() fails try the add user script (2.2.x behavior).
1131 We use the _unmapped_ username here in an attempt to provide
1132 consistent username mapping behavior between kerberos and NTLM[SSP]
1133 authentication in domain mode security. I.E. Username mapping
1134 should be applied to the fully qualified username
1135 (e.g. DOMAIN\user) and not just the login name. Yes this means we
1136 called map_username() unnecessarily in make_user_info_map() but
1137 that is how the current code is designed. Making the change here
1138 is the least disruptive place. -- jerry */
1140 /* this call will try to create the user if necessary */
1142 nt_status = check_account(mem_ctx, nt_domain, sent_nt_username,
1143 &found_username, &pwd,
1144 &username_was_mapped);
1146 if (!NT_STATUS_IS_OK(nt_status)) {
1150 result = make_server_info(NULL);
1151 if (result == NULL) {
1152 DEBUG(4, ("make_server_info failed!\n"));
1153 return NT_STATUS_NO_MEMORY;
1156 result->unix_name = talloc_strdup(result, found_username);
1158 result->sanitized_username = sanitize_username(result,
1160 if (result->sanitized_username == NULL) {
1161 TALLOC_FREE(result);
1162 return NT_STATUS_NO_MEMORY;
1165 /* copy in the info3 */
1166 result->info3 = i3 = copy_netr_SamInfo3(result, info3);
1167 if (result->info3 == NULL) {
1168 TALLOC_FREE(result);
1169 return NT_STATUS_NO_MEMORY;
1172 /* Fill in the unix info we found on the way */
1173 result->utok.uid = pwd->pw_uid;
1174 result->utok.gid = pwd->pw_gid;
1176 /* We can't just trust that the primary group sid sent us is something
1177 * we can really use. Obtain the useable sid, and store the original
1178 * one as an additional group if it had to be replaced */
1179 nt_status = get_primary_group_sid(mem_ctx, found_username,
1181 if (!NT_STATUS_IS_OK(nt_status)) {
1182 TALLOC_FREE(result);
1186 /* store and check if it is the same we got originally */
1187 sid_peek_rid(group_sid, &i3->base.primary_gid);
1188 if (i3->base.primary_gid != info3->base.primary_gid) {
1189 uint32_t n = i3->base.groups.count;
1190 /* not the same, store the original as an additional group */
1191 i3->base.groups.rids =
1192 talloc_realloc(i3, i3->base.groups.rids,
1193 struct samr_RidWithAttribute, n + 1);
1194 if (i3->base.groups.rids == NULL) {
1195 TALLOC_FREE(result);
1196 return NT_STATUS_NO_MEMORY;
1198 i3->base.groups.rids[n].rid = info3->base.primary_gid;
1199 i3->base.groups.rids[n].attributes = SE_GROUP_ENABLED;
1200 i3->base.groups.count = n + 1;
1203 /* ensure we are never given NULL session keys */
1205 if (memcmp(info3->base.key.key, zeros, sizeof(zeros)) == 0) {
1206 result->user_session_key = data_blob_null;
1208 result->user_session_key = data_blob_talloc(
1209 result, info3->base.key.key,
1210 sizeof(info3->base.key.key));
1213 if (memcmp(info3->base.LMSessKey.key, zeros, 8) == 0) {
1214 result->lm_session_key = data_blob_null;
1216 result->lm_session_key = data_blob_talloc(
1217 result, info3->base.LMSessKey.key,
1218 sizeof(info3->base.LMSessKey.key));
1221 result->nss_token |= username_was_mapped;
1223 *server_info = result;
1225 return NT_STATUS_OK;
1228 /*****************************************************************************
1229 Make a server_info struct from the wbcAuthUserInfo returned by a domain logon
1230 ******************************************************************************/
1232 NTSTATUS make_server_info_wbcAuthUserInfo(TALLOC_CTX *mem_ctx,
1233 const char *sent_nt_username,
1235 const struct wbcAuthUserInfo *info,
1236 struct auth_serversupplied_info **server_info)
1238 struct netr_SamInfo3 *info3;
1240 info3 = wbcAuthUserInfo_to_netr_SamInfo3(mem_ctx, info);
1242 return NT_STATUS_NO_MEMORY;
1245 return make_server_info_info3(mem_ctx,
1246 sent_nt_username, domain,
1247 server_info, info3);
1251 * Verify whether or not given domain is trusted.
1253 * @param domain_name name of the domain to be verified
1254 * @return true if domain is one of the trusted ones or
1255 * false if otherwise
1258 bool is_trusted_domain(const char* dom_name)
1260 struct dom_sid trustdom_sid;
1263 /* no trusted domains for a standalone server */
1265 if ( lp_server_role() == ROLE_STANDALONE )
1268 if (dom_name == NULL || dom_name[0] == '\0') {
1272 if (strequal(dom_name, get_global_sam_name())) {
1276 /* if we are a DC, then check for a direct trust relationships */
1280 DEBUG (5,("is_trusted_domain: Checking for domain trust with "
1281 "[%s]\n", dom_name ));
1282 ret = pdb_get_trusteddom_pw(dom_name, NULL, NULL, NULL);
1290 /* If winbind is around, ask it */
1292 result = wb_is_trusted_domain(dom_name);
1294 if (result == WBC_ERR_SUCCESS) {
1298 if (result == WBC_ERR_DOMAIN_NOT_FOUND) {
1299 /* winbind could not find the domain */
1303 /* The only other possible result is that winbind is not up
1304 and running. We need to update the trustdom_cache
1307 update_trustdom_cache();
1310 /* now the trustdom cache should be available a DC could still
1311 * have a transitive trust so fall back to the cache of trusted
1312 * domains (like a domain member would use */
1314 if ( trustdom_cache_fetch(dom_name, &trustdom_sid) ) {