source/auth/auth_sam.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3    Password and authentication handling
   4    Copyright (C) Andrew Bartlett <abartlet@samba.org> 2001-2004
   5    Copyright (C) Gerald Carter                             2003
   6
   7    This program is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License as published by
   9    the Free Software Foundation; either version 2 of the License, or
  10    (at your option) any later version.
  11
  12    This program is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15    GNU General Public License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with this program; if not, write to the Free Software
  19    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  20 */
  21
  22 #include "includes.h"
  23 #include "librpc/gen_ndr/ndr_samr.h"
  24 #include "system/time.h"
  25 #include "auth/auth.h"
  26
  27 #undef DBGC_CLASS
  28 #define DBGC_CLASS DBGC_AUTH
  29
  30 /****************************************************************************
  31  Do a specific test for an smb password being correct, given a smb_password and
  32  the lanman and NT responses.
  33 ****************************************************************************/
  34
  35 static NTSTATUS sam_password_ok(const struct auth_context *auth_context,
  36                                 TALLOC_CTX *mem_ctx,
  37                                 const char *username,
  38                                 uint16_t acct_flags,
  39                                 const struct samr_Password *lm_pwd,
  40                                 const struct samr_Password *nt_pwd,
  41                                 const struct auth_usersupplied_info *user_info,
  42                                 DATA_BLOB *user_sess_key,
  43                                 DATA_BLOB *lm_sess_key)
  44 {
  45         NTSTATUS status;
  46
  47         if (acct_flags & ACB_PWNOTREQ) {
  48                 if (lp_null_passwords()) {
  49                         DEBUG(3,("Account for user '%s' has no password and null passwords are allowed.\n",
  50                                  username));
  51                         return NT_STATUS_OK;
  52                 } else {
  53                         DEBUG(3,("Account for user '%s' has no password and null passwords are NOT allowed.\n",
  54                                  username));
  55                         return NT_STATUS_LOGON_FAILURE;
  56                 }
  57         }
  58
  59         status = ntlm_password_check(mem_ctx, &auth_context->challenge,
  60                                    &user_info->lm_resp, &user_info->nt_resp,
  61                                    &user_info->lm_interactive_password,
  62                                    &user_info->nt_interactive_password,
  63                                    username,
  64                                    user_info->smb_name.str,
  65                                    user_info->client_domain.str,
  66                                    lm_pwd->hash, nt_pwd->hash, user_sess_key, lm_sess_key);
  67
  68         if (NT_STATUS_IS_OK(status)) {
  69                 if (user_sess_key && user_sess_key->data) {
  70                         talloc_steal(auth_context, user_sess_key->data);
  71                 }
  72                 if (lm_sess_key && lm_sess_key->data) {
  73                         talloc_steal(auth_context, lm_sess_key->data);
  74                 }
  75         }
  76
  77         return status;
  78 }
  79
  80
  81 /****************************************************************************
  82  Do a specific test for a SAM_ACCOUNT being vaild for this connection
  83  (ie not disabled, expired and the like).
  84 ****************************************************************************/
  85
  86 static NTSTATUS sam_account_ok(TALLOC_CTX *mem_ctx,
  87                                const char *username,
  88                                uint16_t acct_flags,
  89                                NTTIME *acct_expiry,
  90                                NTTIME *must_change_time,
  91                                NTTIME *last_set_time,
  92                                const char *workstation_list,
  93                                const struct auth_usersupplied_info *user_info)
  94 {
  95         DEBUG(4,("sam_account_ok: Checking SMB password for user %s\n", username));
  96
  97         /* Quit if the account was disabled. */
  98         if (acct_flags & ACB_DISABLED) {
  99                 DEBUG(1,("sam_account_ok: Account for user '%s' was disabled.\n", username));
 100                 return NT_STATUS_ACCOUNT_DISABLED;
 101         }
 102
 103         /* Quit if the account was locked out. */
 104         if (acct_flags & ACB_AUTOLOCK) {
 105                 DEBUG(1,("sam_account_ok: Account for user %s was locked out.\n", username));
 106                 return NT_STATUS_ACCOUNT_LOCKED_OUT;
 107         }
 108
 109         /* Test account expire time */
 110         if ((*acct_expiry) != -1 && time(NULL) > nt_time_to_unix(*acct_expiry)) {
 111                 DEBUG(1,("sam_account_ok: Account for user '%s' has expired.\n", username));
 112                 DEBUG(3,("sam_account_ok: Account expired at '%s'.\n",
 113                          nt_time_string(mem_ctx, *acct_expiry)));
 114                 return NT_STATUS_ACCOUNT_EXPIRED;
 115         }
 116
 117         if (!(acct_flags & ACB_PWNOEXP)) {
 118
 119                 /* check for immediate expiry "must change at next logon" */
 120                 if (*must_change_time == 0 && *last_set_time != 0) {
 121                         DEBUG(1,("sam_account_ok: Account for user '%s' password must change!.\n",
 122                                  username));
 123                         return NT_STATUS_PASSWORD_MUST_CHANGE;
 124                 }
 125
 126                 /* check for expired password */
 127                 if ((*must_change_time) != 0 && nt_time_to_unix(*must_change_time) < time(NULL)) {
 128                         DEBUG(1,("sam_account_ok: Account for user '%s' password expired!.\n",
 129                                  username));
 130                         DEBUG(1,("sam_account_ok: Password expired at '%s' unix time.\n",
 131                                  nt_time_string(mem_ctx, *must_change_time)));
 132                         return NT_STATUS_PASSWORD_EXPIRED;
 133                 }
 134         }
 135
 136         /* Test workstation. Workstation list is comma separated. */
 137
 138         if (workstation_list && *workstation_list) {
 139                 BOOL invalid_ws = True;
 140                 const char *s = workstation_list;
 141
 142                 fstring tok;
 143
 144                 while (next_token(&s, tok, ",", sizeof(tok))) {
 145                         DEBUG(10,("sam_account_ok: checking for workstation match %s and %s (len=%d)\n",
 146                                   tok, user_info->wksta_name.str, user_info->wksta_name.len));
 147
 148                         if(strequal(tok, user_info->wksta_name.str)) {
 149                                 invalid_ws = False;
 150
 151                                 break;
 152                         }
 153                 }
 154
 155                 if (invalid_ws)
 156                         return NT_STATUS_INVALID_WORKSTATION;
 157         }
 158
 159         if (acct_flags & ACB_DOMTRUST) {
 160                 DEBUG(2,("sam_account_ok: Domain trust account %s denied by server\n", username));
 161                 return NT_STATUS_NOLOGON_INTERDOMAIN_TRUST_ACCOUNT;
 162         }
 163
 164         if (acct_flags & ACB_SVRTRUST) {
 165                 DEBUG(2,("sam_account_ok: Server trust account %s denied by server\n", username));
 166                 return NT_STATUS_NOLOGON_SERVER_TRUST_ACCOUNT;
 167         }
 168
 169         if (acct_flags & ACB_WSTRUST) {
 170                 DEBUG(4,("sam_account_ok: Wksta trust account %s denied by server\n", username));
 171                 return NT_STATUS_NOLOGON_WORKSTATION_TRUST_ACCOUNT;
 172         }
 173
 174         return NT_STATUS_OK;
 175 }
 176
 177 /****************************************************************************
 178  Look for the specified user in the sam, return ldb result structures
 179 ****************************************************************************/
 180
 181 static NTSTATUS sam_search_user(const char *username, const char *domain,
 182                                 TALLOC_CTX *mem_ctx, void *sam_ctx,
 183                                 struct ldb_message ***ret_msgs,
 184                                 struct ldb_message ***ret_msgs_domain)
 185 {
 186         struct ldb_message **msgs;
 187         struct ldb_message **msgs_domain;
 188
 189         uint_t ret;
 190         uint_t ret_domain;
 191
 192         const char *domain_dn = NULL;
 193         const char *domain_sid;
 194
 195         const char *attrs[] = {"unicodePwd", "lmPwdHash", "ntPwdHash",
 196                                "userAccountControl",
 197                                "pwdLastSet",
 198                                "accountExpires",
 199                                "objectSid",
 200                                "userWorkstations",
 201
 202                                /* required for server_info, not access control: */
 203                                "sAMAccountName",
 204                                "displayName",
 205                                "scriptPath",
 206                                "profilePath",
 207                                "homeDirectory",
 208                                "homeDrive",
 209                                "lastLogon",
 210                                "lastLogoff",
 211                                "accountExpires",
 212                                "badPwdCount",
 213                                "logonCount",
 214                                "primaryGroupID",
 215                                NULL,
 216         };
 217
 218         const char *domain_attrs[] =  {"name", "objectSid"};
 219
 220         if (domain) {
 221                 /* find the domain's DN */
 222                 ret_domain = samdb_search(sam_ctx, mem_ctx, NULL, &msgs_domain, domain_attrs,
 223                                           "(&(|(realm=%s)(name=%s))(objectclass=domain))",
 224                                           domain, domain);
 225
 226                 if (ret_domain == 0) {
 227                         DEBUG(3,("check_sam_security: Couldn't find domain [%s] in passdb file.\n",
 228                                  domain));
 229                         return NT_STATUS_NO_SUCH_USER;
 230                 }
 231
 232                 if (ret_domain > 1) {
 233                         DEBUG(0,("Found %d records matching domain [%s]\n",
 234                                  ret_domain, domain));
 235                         return NT_STATUS_INTERNAL_DB_CORRUPTION;
 236                 }
 237
 238                 domain_dn = msgs_domain[0]->dn;
 239
 240         }
 241         /* pull the user attributes */
 242         ret = samdb_search(sam_ctx, mem_ctx, domain_dn, &msgs, attrs,
 243                            "(&(sAMAccountName=%s)(objectclass=user))",
 244                            username);
 245
 246         if (ret == 0) {
 247                 DEBUG(3,("check_sam_security: Couldn't find user [%s] in passdb file.\n",
 248                          username));
 249                 return NT_STATUS_NO_SUCH_USER;
 250         }
 251
 252         if (ret > 1) {
 253                 DEBUG(0,("Found %d records matching user [%s]\n", ret, username));
 254                 return NT_STATUS_INTERNAL_DB_CORRUPTION;
 255         }
 256
 257         if (!domain) {
 258                 domain_sid = samdb_result_sid_prefix(mem_ctx, msgs[0], "objectSid");
 259                 if (!domain_sid) {
 260                         return NT_STATUS_INTERNAL_DB_CORRUPTION;
 261                 }
 262
 263                 /* find the domain's DN */
 264                 ret_domain = samdb_search(sam_ctx, mem_ctx, NULL, &msgs_domain, domain_attrs,
 265                                           "(&(objectSid=%s)(objectclass=domain))",
 266                                           domain_sid);
 267
 268                 if (ret_domain == 0) {
 269                         DEBUG(3,("check_sam_security: Couldn't find domain [%s] in passdb file.\n",
 270                                  domain_sid));
 271                         return NT_STATUS_NO_SUCH_USER;
 272                 }
 273
 274                 if (ret_domain > 1) {
 275                         DEBUG(0,("Found %d records matching domain [%s]\n",
 276                                  ret_domain, domain_sid));
 277                         return NT_STATUS_INTERNAL_DB_CORRUPTION;
 278                 }
 279
 280                 domain_dn = msgs_domain[0]->dn;
 281         }
 282         *ret_msgs = msgs;
 283         *ret_msgs_domain = msgs_domain;
 284
 285         return NT_STATUS_OK;
 286 }
 287
 288 NTSTATUS sam_check_password(const struct auth_context *auth_context,
 289                             const char *username,
 290                             TALLOC_CTX *mem_ctx, void *sam_ctx,
 291                             struct ldb_message **msgs,
 292                             const char *domain_dn,
 293                             const struct auth_usersupplied_info *user_info,
 294                             DATA_BLOB *user_sess_key, DATA_BLOB *lm_sess_key)
 295 {
 296
 297         uint16_t acct_flags;
 298         const char *workstation_list;
 299         NTTIME acct_expiry;
 300         NTTIME must_change_time;
 301         NTTIME last_set_time;
 302         struct samr_Password *lm_pwd, *nt_pwd;
 303
 304         NTSTATUS nt_status;
 305
 306
 307         acct_flags = samdb_result_acct_flags(msgs[0], "sAMAcctFlags");
 308
 309         /* Quit if the account was locked out. */
 310         if (acct_flags & ACB_AUTOLOCK) {
 311                 DEBUG(3,("check_sam_security: Account for user %s was locked out.\n",
 312                          username));
 313                 return NT_STATUS_ACCOUNT_LOCKED_OUT;
 314         }
 315
 316         if (!NT_STATUS_IS_OK(nt_status = samdb_result_passwords(mem_ctx, msgs[0],
 317                                                                 &lm_pwd, &nt_pwd))) {
 318                 return nt_status;
 319         }
 320
 321         nt_status = sam_password_ok(auth_context, mem_ctx,
 322                                     username, acct_flags,
 323                                     lm_pwd, nt_pwd,
 324                                     user_info, user_sess_key, lm_sess_key);
 325
 326         if (!NT_STATUS_IS_OK(nt_status)) {
 327                 return nt_status;
 328         }
 329
 330         acct_expiry = samdb_result_nttime(msgs[0], "accountExpires", 0);
 331         must_change_time = samdb_result_force_password_change(sam_ctx, mem_ctx,
 332                                                               domain_dn, msgs[0],
 333                                                               "pwdLastSet");
 334         last_set_time = samdb_result_nttime(msgs[0], "pwdLastSet", 0);
 335
 336         workstation_list = samdb_result_string(msgs[0], "userWorkstations", NULL);
 337
 338         nt_status = sam_account_ok(mem_ctx, username, acct_flags,
 339                                    &acct_expiry,
 340                                    &must_change_time,
 341                                    &last_set_time,
 342                                    workstation_list,
 343                                    user_info);
 344
 345         return nt_status;
 346 }
 347
 348 NTSTATUS sam_make_server_info(TALLOC_CTX *mem_ctx, void *sam_ctx,
 349                               struct ldb_message **msgs, struct ldb_message **msgs_domain,
 350                               struct auth_serversupplied_info **server_info)
 351 {
 352
 353         struct ldb_message **group_msgs;
 354         int group_ret;
 355         const char *group_attrs[3] = { "sAMAccountType", "objectSid", NULL };
 356         /* find list of sids */
 357         struct dom_sid **groupSIDs = NULL;
 358         struct dom_sid *user_sid;
 359         struct dom_sid *primary_group_sid;
 360         const char *sidstr;
 361         int i;
 362         uint_t rid;
 363
 364         NTSTATUS nt_status;
 365
 366         if (!NT_STATUS_IS_OK(nt_status = make_server_info(mem_ctx, server_info,
 367                                                           samdb_result_string(msgs[0], "sAMAccountName", "")))) {
 368                 DEBUG(0,("check_sam_security: make_server_info_sam() failed with '%s'\n", nt_errstr(nt_status)));
 369                 return nt_status;
 370         }
 371
 372         group_ret = samdb_search(sam_ctx,
 373                                  mem_ctx, NULL, &group_msgs, group_attrs,
 374                                  "(&(member=%s)(sAMAccountType=*))",
 375                                  msgs[0]->dn);
 376         if (group_ret == -1) {
 377                 return NT_STATUS_INTERNAL_DB_CORRUPTION;
 378         }
 379
 380         if (group_ret > 0 &&
 381             !(groupSIDs = talloc_array_p(*server_info, struct dom_sid *, group_ret))) {
 382                 talloc_free(*server_info);
 383                 return NT_STATUS_NO_MEMORY;
 384         }
 385
 386         /* Need to unroll some nested groups, but not aliases */
 387         for (i = 0; i < group_ret; i++) {
 388                 sidstr = ldb_msg_find_string(group_msgs[i], "objectSid", NULL);
 389                 groupSIDs[i] = dom_sid_parse_talloc(*server_info, sidstr);
 390         }
 391
 392         sidstr = ldb_msg_find_string(msgs[0], "objectSid", NULL);
 393         user_sid = dom_sid_parse_talloc(*server_info, sidstr);
 394         primary_group_sid = dom_sid_parse_talloc(*server_info, sidstr);
 395         rid = samdb_result_uint(msgs[0], "primaryGroupID", ~0);
 396         if (rid == ~0) {
 397                 if (group_ret > 0) {
 398                         primary_group_sid = groupSIDs[0];
 399                 } else {
 400                         primary_group_sid = NULL;
 401                 }
 402         } else {
 403                 primary_group_sid->sub_auths[primary_group_sid->num_auths-1] = rid;
 404         }
 405
 406         (*server_info)->user_sid = user_sid;
 407         (*server_info)->primary_group_sid = primary_group_sid;
 408
 409         (*server_info)->n_domain_groups = group_ret;
 410         (*server_info)->domain_groups = groupSIDs;
 411
 412         (*server_info)->account_name
 413                 = talloc_strdup(*server_info,
 414                                 samdb_result_string(msgs[0], "sAMAccountName", ""));
 415
 416         (*server_info)->domain
 417                 = talloc_strdup(*server_info,
 418                                 samdb_result_string(msgs_domain[0], "name", ""));
 419
 420         (*server_info)->full_name
 421                 = talloc_strdup(*server_info,
 422                                 samdb_result_string(msgs[0], "displayName", ""));
 423
 424         (*server_info)->logon_script
 425                 = talloc_strdup(*server_info,
 426                                 samdb_result_string(msgs[0], "scriptPath", ""));
 427         (*server_info)->profile_path
 428                 = talloc_strdup(*server_info,
 429                                 samdb_result_string(msgs[0], "profilePath", ""));
 430         (*server_info)->home_directory
 431                 = talloc_strdup(*server_info,
 432                                 samdb_result_string(msgs[0], "homeDirectory", ""));
 433
 434         (*server_info)->home_drive
 435                 = talloc_strdup(*server_info,
 436                                 samdb_result_string(msgs[0], "homeDrive", ""));
 437
 438         (*server_info)->last_logon = samdb_result_nttime(msgs[0], "lastLogon", 0);
 439         (*server_info)->last_logoff = samdb_result_nttime(msgs[0], "lastLogoff", 0);
 440         (*server_info)->acct_expiry = samdb_result_nttime(msgs[0], "accountExpires", 0);
 441         (*server_info)->last_password_change = samdb_result_nttime(msgs[0], "pwdLastSet", 0);
 442         (*server_info)->allow_password_change
 443                 = samdb_result_allow_password_change(sam_ctx, mem_ctx,
 444                                                      msgs_domain[0]->dn, msgs[0], "pwdLastSet");
 445         (*server_info)->force_password_change
 446                 = samdb_result_force_password_change(sam_ctx, mem_ctx,
 447                                                      msgs_domain[0]->dn, msgs[0], "pwdLastSet");
 448
 449         (*server_info)->logon_count = samdb_result_uint(msgs[0], "logonCount", 0);
 450         (*server_info)->bad_password_count = samdb_result_uint(msgs[0], "badPwdCount", 0);
 451
 452         (*server_info)->acct_flags = samdb_result_acct_flags(msgs[0], "userAccountControl");
 453
 454         (*server_info)->guest = False;
 455
 456         if (!(*server_info)->account_name
 457             || !(*server_info)->full_name
 458             || !(*server_info)->logon_script
 459             || !(*server_info)->profile_path
 460             || !(*server_info)->home_directory
 461             || !(*server_info)->home_drive) {
 462                 talloc_destroy(*server_info);
 463                 return NT_STATUS_NO_MEMORY;
 464         }
 465
 466         return nt_status;
 467 }
 468
 469 NTSTATUS sam_get_server_info(const char *username, const char *domain, TALLOC_CTX *mem_ctx,
 470                              struct auth_serversupplied_info **server_info)
 471 {
 472         NTSTATUS nt_status;
 473
 474         struct ldb_message **msgs;
 475         struct ldb_message **domain_msgs;
 476         void *sam_ctx;
 477
 478         sam_ctx = samdb_connect(mem_ctx);
 479         if (sam_ctx == NULL) {
 480                 return NT_STATUS_INVALID_SYSTEM_SERVICE;
 481         }
 482
 483         nt_status = sam_search_user(username, domain, mem_ctx, sam_ctx, &msgs, &domain_msgs);
 484         if (!NT_STATUS_IS_OK(nt_status)) {
 485                 return nt_status;
 486         }
 487
 488         nt_status = sam_make_server_info(mem_ctx, sam_ctx, msgs, domain_msgs, server_info);
 489         if (!NT_STATUS_IS_OK(nt_status)) {
 490                 return nt_status;
 491         }
 492
 493         return NT_STATUS_OK;
 494 }
 495
 496 static NTSTATUS check_sam_security_internals(const struct auth_context *auth_context,
 497                                              const char *domain,
 498                                              TALLOC_CTX *mem_ctx,
 499                                              const struct auth_usersupplied_info *user_info,
 500                                              struct auth_serversupplied_info **server_info)
 501 {
 502         NTSTATUS nt_status;
 503
 504         const char *username = user_info->internal_username.str;
 505         struct ldb_message **msgs;
 506         struct ldb_message **domain_msgs;
 507         void *sam_ctx;
 508         DATA_BLOB user_sess_key, lm_sess_key;
 509
 510         sam_ctx = samdb_connect(mem_ctx);
 511         if (sam_ctx == NULL) {
 512                 return NT_STATUS_INVALID_SYSTEM_SERVICE;
 513         }
 514
 515         nt_status = sam_search_user(username, domain, mem_ctx, sam_ctx, &msgs, &domain_msgs);
 516         if (!NT_STATUS_IS_OK(nt_status)) {
 517                 return nt_status;
 518         }
 519
 520         nt_status = sam_check_password(auth_context, username, mem_ctx, sam_ctx, msgs, domain_msgs[0]->dn, user_info,
 521                                        &user_sess_key, &lm_sess_key);
 522         if (!NT_STATUS_IS_OK(nt_status)) {
 523                 return nt_status;
 524         }
 525
 526         nt_status = sam_make_server_info(mem_ctx, sam_ctx, msgs, domain_msgs, server_info);
 527         if (!NT_STATUS_IS_OK(nt_status)) {
 528                 return nt_status;
 529         }
 530
 531         talloc_reference(auth_context, *server_info);
 532
 533         (*server_info)->user_session_key = user_sess_key;
 534         (*server_info)->lm_session_key = lm_sess_key;
 535         return NT_STATUS_OK;
 536 }
 537
 538 static NTSTATUS check_sam_security(const struct auth_context *auth_context,
 539                                    void *my_private_data,
 540                                    TALLOC_CTX *mem_ctx,
 541                                    const struct auth_usersupplied_info *user_info,
 542                                    struct auth_serversupplied_info **server_info)
 543 {
 544         return check_sam_security_internals(auth_context, NULL,
 545                                             mem_ctx, user_info, server_info);
 546 }
 547
 548 /* module initialisation */
 549 static NTSTATUS auth_init_sam_ignoredomain(struct auth_context *auth_context,
 550                                            const char *param,
 551                                            struct auth_methods **auth_method)
 552 {
 553         if (!make_auth_methods(auth_context, auth_method)) {
 554                 return NT_STATUS_NO_MEMORY;
 555         }
 556
 557         (*auth_method)->auth = check_sam_security;
 558         (*auth_method)->name = "sam_ignoredomain";
 559         return NT_STATUS_OK;
 560 }
 561
 562
 563 /****************************************************************************
 564 Check SAM security (above) but with a few extra checks.
 565 ****************************************************************************/
 566
 567 static NTSTATUS check_samstrict_security(const struct auth_context *auth_context,
 568                                          void *my_private_data,
 569                                          TALLOC_CTX *mem_ctx,
 570                                          const struct auth_usersupplied_info *user_info,
 571                                          struct auth_serversupplied_info **server_info)
 572 {
 573         const char *domain;
 574         BOOL is_local_name, is_my_domain;
 575
 576         if (!user_info || !auth_context) {
 577                 return NT_STATUS_LOGON_FAILURE;
 578         }
 579
 580         is_local_name = is_myname(user_info->domain.str);
 581         is_my_domain  = strequal(user_info->domain.str, lp_workgroup());
 582
 583         /* check whether or not we service this domain/workgroup name */
 584
 585         switch ( lp_server_role() ) {
 586                 case ROLE_STANDALONE:
 587                 case ROLE_DOMAIN_MEMBER:
 588                         if ( !is_local_name ) {
 589                                 DEBUG(6,("check_samstrict_security: %s is not one of my local names (%s)\n",
 590                                         user_info->domain.str, (lp_server_role() == ROLE_DOMAIN_MEMBER
 591                                         ? "ROLE_DOMAIN_MEMBER" : "ROLE_STANDALONE") ));
 592                                 return NT_STATUS_NOT_IMPLEMENTED;
 593                         }
 594                         domain = lp_netbios_name();
 595                         break;
 596                 case ROLE_DOMAIN_PDC:
 597                 case ROLE_DOMAIN_BDC:
 598                         if ( !is_local_name && !is_my_domain ) {
 599                                 DEBUG(6,("check_samstrict_security: %s is not one of my local names or domain name (DC)\n",
 600                                         user_info->domain.str));
 601                                 return NT_STATUS_NOT_IMPLEMENTED;
 602                         }
 603                         domain = lp_workgroup();
 604                         break;
 605                 default: /* name is ok */
 606                         domain = user_info->domain.str;
 607                         break;
 608         }
 609
 610         return check_sam_security_internals(auth_context, domain, mem_ctx, user_info, server_info);
 611 }
 612
 613 /* module initialisation */
 614 static NTSTATUS auth_init_sam(struct auth_context *auth_context,
 615                               const char *param,
 616                               struct auth_methods **auth_method)
 617 {
 618         if (!make_auth_methods(auth_context, auth_method)) {
 619                 return NT_STATUS_NO_MEMORY;
 620         }
 621
 622         (*auth_method)->auth = check_samstrict_security;
 623         (*auth_method)->name = "sam";
 624         return NT_STATUS_OK;
 625 }
 626
 627 NTSTATUS auth_sam_init(void)
 628 {
 629         NTSTATUS ret;
 630         struct auth_operations ops;
 631
 632         ops.name = "sam";
 633         ops.init = auth_init_sam;
 634         ret = auth_register(&ops);
 635         if (!NT_STATUS_IS_OK(ret)) {
 636                 DEBUG(0,("Failed to register '%s' auth backend!\n",
 637                         ops.name));
 638                 return ret;
 639         }
 640
 641         ops.name = "sam_ignoredomain";
 642         ops.init = auth_init_sam_ignoredomain;
 643         ret = auth_register(&ops);
 644         if (!NT_STATUS_IS_OK(ret)) {
 645                 DEBUG(0,("Failed to register '%s' auth backend!\n",
 646                         ops.name));
 647                 return ret;
 648         }
 649
 650         return ret;
 651 }