source4/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
  25 #undef DBGC_CLASS
  26 #define DBGC_CLASS DBGC_AUTH
  27
  28 /****************************************************************************
  29  Do a specific test for an smb password being correct, given a smb_password and
  30  the lanman and NT responses.
  31 ****************************************************************************/
  32
  33 static NTSTATUS sam_password_ok(const struct auth_context *auth_context,
  34                                 TALLOC_CTX *mem_ctx,
  35                                 const char *username,
  36                                 uint16_t acct_flags,
  37                                 const struct samr_Password *lm_pwd,
  38                                 const struct samr_Password *nt_pwd,
  39                                 const struct auth_usersupplied_info *user_info,
  40                                 DATA_BLOB *user_sess_key,
  41                                 DATA_BLOB *lm_sess_key)
  42 {
  43         NTSTATUS status;
  44
  45         if (acct_flags & ACB_PWNOTREQ) {
  46                 if (lp_null_passwords()) {
  47                         DEBUG(3,("Account for user '%s' has no password and null passwords are allowed.\n",
  48                                  username));
  49                         return NT_STATUS_OK;
  50                 } else {
  51                         DEBUG(3,("Account for user '%s' has no password and null passwords are NOT allowed.\n",
  52                                  username));
  53                         return NT_STATUS_LOGON_FAILURE;
  54                 }
  55         }
  56
  57         status = ntlm_password_check(mem_ctx, &auth_context->challenge,
  58                                    &user_info->lm_resp, &user_info->nt_resp,
  59                                    &user_info->lm_interactive_password,
  60                                    &user_info->nt_interactive_password,
  61                                    username,
  62                                    user_info->smb_name.str,
  63                                    user_info->client_domain.str,
  64                                    lm_pwd->hash, nt_pwd->hash, user_sess_key, lm_sess_key);
  65
  66         if (NT_STATUS_IS_OK(status)) {
  67                 if (user_sess_key && user_sess_key->data) {
  68                         talloc_steal(auth_context, user_sess_key->data);
  69                 }
  70                 if (lm_sess_key && lm_sess_key->data) {
  71                         talloc_steal(auth_context, lm_sess_key->data);
  72                 }
  73         }
  74
  75         return status;
  76 }
  77
  78
  79 /****************************************************************************
  80  Do a specific test for a SAM_ACCOUNT being vaild for this connection
  81  (ie not disabled, expired and the like).
  82 ****************************************************************************/
  83
  84 static NTSTATUS sam_account_ok(TALLOC_CTX *mem_ctx,
  85                                const char *username,
  86                                uint16_t acct_flags,
  87                                NTTIME *acct_expiry,
  88                                NTTIME *must_change_time,
  89                                NTTIME *last_set_time,
  90                                const char *workstation_list,
  91                                const struct auth_usersupplied_info *user_info)
  92 {
  93         DEBUG(4,("sam_account_ok: Checking SMB password for user %s\n", username));
  94
  95         /* Quit if the account was disabled. */
  96         if (acct_flags & ACB_DISABLED) {
  97                 DEBUG(1,("sam_account_ok: Account for user '%s' was disabled.\n", username));
  98                 return NT_STATUS_ACCOUNT_DISABLED;
  99         }
 100
 101         /* Quit if the account was locked out. */
 102         if (acct_flags & ACB_AUTOLOCK) {
 103                 DEBUG(1,("sam_account_ok: Account for user %s was locked out.\n", username));
 104                 return NT_STATUS_ACCOUNT_LOCKED_OUT;
 105         }
 106
 107         /* Test account expire time */
 108         if ((*acct_expiry) != -1 && time(NULL) > nt_time_to_unix(*acct_expiry)) {
 109                 DEBUG(1,("sam_account_ok: Account for user '%s' has expired.\n", username));
 110                 DEBUG(3,("sam_account_ok: Account expired at '%s'.\n",
 111                          nt_time_string(mem_ctx, *acct_expiry)));
 112                 return NT_STATUS_ACCOUNT_EXPIRED;
 113         }
 114
 115         if (!(acct_flags & ACB_PWNOEXP)) {
 116
 117                 /* check for immediate expiry "must change at next logon" */
 118                 if (*must_change_time == 0 && *last_set_time != 0) {
 119                         DEBUG(1,("sam_account_ok: Account for user '%s' password must change!.\n",
 120                                  username));
 121                         return NT_STATUS_PASSWORD_MUST_CHANGE;
 122                 }
 123
 124                 /* check for expired password */
 125                 if ((*must_change_time) != 0 && nt_time_to_unix(*must_change_time) < time(NULL)) {
 126                         DEBUG(1,("sam_account_ok: Account for user '%s' password expired!.\n",
 127                                  username));
 128                         DEBUG(1,("sam_account_ok: Password expired at '%s' unix time.\n",
 129                                  nt_time_string(mem_ctx, *must_change_time)));
 130                         return NT_STATUS_PASSWORD_EXPIRED;
 131                 }
 132         }
 133
 134         /* Test workstation. Workstation list is comma separated. */
 135
 136         if (workstation_list && *workstation_list) {
 137                 BOOL invalid_ws = True;
 138                 const char *s = workstation_list;
 139
 140                 fstring tok;
 141
 142                 while (next_token(&s, tok, ",", sizeof(tok))) {
 143                         DEBUG(10,("sam_account_ok: checking for workstation match %s and %s (len=%d)\n",
 144                                   tok, user_info->wksta_name.str, user_info->wksta_name.len));
 145
 146                         if(strequal(tok, user_info->wksta_name.str)) {
 147                                 invalid_ws = False;
 148
 149                                 break;
 150                         }
 151                 }
 152
 153                 if (invalid_ws)
 154                         return NT_STATUS_INVALID_WORKSTATION;
 155         }
 156
 157         if (acct_flags & ACB_DOMTRUST) {
 158                 DEBUG(2,("sam_account_ok: Domain trust account %s denied by server\n", username));
 159                 return NT_STATUS_NOLOGON_INTERDOMAIN_TRUST_ACCOUNT;
 160         }
 161
 162         if (acct_flags & ACB_SVRTRUST) {
 163                 DEBUG(2,("sam_account_ok: Server trust account %s denied by server\n", username));
 164                 return NT_STATUS_NOLOGON_SERVER_TRUST_ACCOUNT;
 165         }
 166
 167         if (acct_flags & ACB_WSTRUST) {
 168                 DEBUG(4,("sam_account_ok: Wksta trust account %s denied by server\n", username));
 169                 return NT_STATUS_NOLOGON_WORKSTATION_TRUST_ACCOUNT;
 170         }
 171
 172         return NT_STATUS_OK;
 173 }
 174
 175 /****************************************************************************
 176  Look for the specified user in the sam, return ldb result structures
 177 ****************************************************************************/
 178
 179 static NTSTATUS sam_search_user(const char *username, const char *domain,
 180                                 TALLOC_CTX *mem_ctx, void *sam_ctx,
 181                                 struct ldb_message ***ret_msgs,
 182                                 struct ldb_message ***ret_msgs_domain)
 183 {
 184         struct ldb_message **msgs;
 185         struct ldb_message **msgs_domain;
 186
 187         uint_t ret;
 188         uint_t ret_domain;
 189
 190         const char *domain_dn = NULL;
 191         const char *domain_sid;
 192
 193         const char *attrs[] = {"unicodePwd", "lmPwdHash", "ntPwdHash",
 194                                "userAccountControl",
 195                                "pwdLastSet",
 196                                "accountExpires",
 197                                "objectSid",
 198                                "userWorkstations",
 199
 200                                /* required for server_info, not access control: */
 201                                "sAMAccountName",
 202                                "displayName",
 203                                "scriptPath",
 204                                "profilePath",
 205                                "homeDirectory",
 206                                "homeDrive",
 207                                "lastLogon",
 208                                "lastLogoff",
 209                                "accountExpires",
 210                                "badPwdCount",
 211                                "logonCount",
 212                                "primaryGroupID",
 213                                NULL,
 214         };
 215
 216         const char *domain_attrs[] =  {"name", "objectSid"};
 217
 218         if (domain) {
 219                 /* find the domain's DN */
 220                 ret_domain = samdb_search(sam_ctx, mem_ctx, NULL, &msgs_domain, domain_attrs,
 221                                           "(&(|(realm=%s)(name=%s))(objectclass=domain))",
 222                                           domain, domain);
 223
 224                 if (ret_domain == 0) {
 225                         DEBUG(3,("check_sam_security: Couldn't find domain [%s] in passdb file.\n",
 226                                  domain));
 227                         return NT_STATUS_NO_SUCH_USER;
 228                 }
 229
 230                 if (ret_domain > 1) {
 231                         DEBUG(0,("Found %d records matching domain [%s]\n",
 232                                  ret_domain, domain));
 233                         return NT_STATUS_INTERNAL_DB_CORRUPTION;
 234                 }
 235
 236                 domain_dn = msgs_domain[0]->dn;
 237
 238         }
 239         /* pull the user attributes */
 240         ret = samdb_search(sam_ctx, mem_ctx, domain_dn, &msgs, attrs,
 241                            "(&(sAMAccountName=%s)(objectclass=user))",
 242                            username);
 243
 244         if (ret == 0) {
 245                 DEBUG(3,("check_sam_security: Couldn't find user [%s] in passdb file.\n",
 246                          username));
 247                 return NT_STATUS_NO_SUCH_USER;
 248         }
 249
 250         if (ret > 1) {
 251                 DEBUG(0,("Found %d records matching user [%s]\n", ret, username));
 252                 return NT_STATUS_INTERNAL_DB_CORRUPTION;
 253         }
 254
 255         if (!domain) {
 256                 domain_sid = samdb_result_sid_prefix(mem_ctx, msgs[0], "objectSid");
 257                 if (!domain_sid) {
 258                         return NT_STATUS_INTERNAL_DB_CORRUPTION;
 259                 }
 260
 261                 /* find the domain's DN */
 262                 ret_domain = samdb_search(sam_ctx, mem_ctx, NULL, &msgs_domain, domain_attrs,
 263                                           "(&(objectSid=%s)(objectclass=domain))",
 264                                           domain_sid);
 265
 266                 if (ret_domain == 0) {
 267                         DEBUG(3,("check_sam_security: Couldn't find domain [%s] in passdb file.\n",
 268                                  domain_sid));
 269                         return NT_STATUS_NO_SUCH_USER;
 270                 }
 271
 272                 if (ret_domain > 1) {
 273                         DEBUG(0,("Found %d records matching domain [%s]\n",
 274                                  ret_domain, domain_sid));
 275                         return NT_STATUS_INTERNAL_DB_CORRUPTION;
 276                 }
 277
 278                 domain_dn = msgs_domain[0]->dn;
 279         }
 280         *ret_msgs = msgs;
 281         *ret_msgs_domain = msgs_domain;
 282
 283         return NT_STATUS_OK;
 284 }
 285
 286 NTSTATUS sam_check_password(const struct auth_context *auth_context,
 287                             const char *username,
 288                             TALLOC_CTX *mem_ctx, void *sam_ctx,
 289                             struct ldb_message **msgs,
 290                             const char *domain_dn,
 291                             const struct auth_usersupplied_info *user_info,
 292                             DATA_BLOB *user_sess_key, DATA_BLOB *lm_sess_key)
 293 {
 294
 295         uint16_t acct_flags;
 296         const char *workstation_list;
 297         NTTIME acct_expiry;
 298         NTTIME must_change_time;
 299         NTTIME last_set_time;
 300         struct samr_Password *lm_pwd, *nt_pwd;
 301
 302         NTSTATUS nt_status;
 303
 304
 305         acct_flags = samdb_result_acct_flags(msgs[0], "sAMAcctFlags");
 306
 307         /* Quit if the account was locked out. */
 308         if (acct_flags & ACB_AUTOLOCK) {
 309                 DEBUG(3,("check_sam_security: Account for user %s was locked out.\n",
 310                          username));
 311                 return NT_STATUS_ACCOUNT_LOCKED_OUT;
 312         }
 313
 314         if (!NT_STATUS_IS_OK(nt_status = samdb_result_passwords(mem_ctx, msgs[0],
 315                                                                 &lm_pwd, &nt_pwd))) {
 316                 return nt_status;
 317         }
 318
 319         nt_status = sam_password_ok(auth_context, mem_ctx,
 320                                     username, acct_flags,
 321                                     lm_pwd, nt_pwd,
 322                                     user_info, user_sess_key, lm_sess_key);
 323
 324         if (!NT_STATUS_IS_OK(nt_status)) {
 325                 return nt_status;
 326         }
 327
 328         acct_expiry = samdb_result_nttime(msgs[0], "accountExpires", 0);
 329         must_change_time = samdb_result_force_password_change(sam_ctx, mem_ctx,
 330                                                               domain_dn, msgs[0],
 331                                                               "pwdLastSet");
 332         last_set_time = samdb_result_nttime(msgs[0], "pwdLastSet", 0);
 333
 334         workstation_list = samdb_result_string(msgs[0], "userWorkstations", NULL);
 335
 336         nt_status = sam_account_ok(mem_ctx, username, acct_flags,
 337                                    &acct_expiry,
 338                                    &must_change_time,
 339                                    &last_set_time,
 340                                    workstation_list,
 341                                    user_info);
 342
 343         return nt_status;
 344 }
 345
 346 NTSTATUS sam_make_server_info(TALLOC_CTX *mem_ctx, void *sam_ctx,
 347                               struct ldb_message **msgs, struct ldb_message **msgs_domain,
 348                               struct auth_serversupplied_info **server_info)
 349 {
 350
 351         struct ldb_message **group_msgs;
 352         int group_ret;
 353         const char *group_attrs[3] = { "sAMAccountType", "objectSid", NULL };
 354         /* find list of sids */
 355         struct dom_sid **groupSIDs = NULL;
 356         struct dom_sid *user_sid;
 357         struct dom_sid *primary_group_sid;
 358         const char *sidstr;
 359         int i;
 360         uint_t rid;
 361
 362         NTSTATUS nt_status;
 363
 364         if (!NT_STATUS_IS_OK(nt_status = make_server_info(mem_ctx, server_info,
 365                                                           samdb_result_string(msgs[0], "sAMAccountName", "")))) {
 366                 DEBUG(0,("check_sam_security: make_server_info_sam() failed with '%s'\n", nt_errstr(nt_status)));
 367                 return nt_status;
 368         }
 369
 370         group_ret = samdb_search(sam_ctx,
 371                                  mem_ctx, NULL, &group_msgs, group_attrs,
 372                                  "(&(member=%s)(sAMAccountType=*))",
 373                                  msgs[0]->dn);
 374         if (group_ret == -1) {
 375                 return NT_STATUS_INTERNAL_DB_CORRUPTION;
 376         }
 377
 378         if (group_ret > 0 &&
 379             !(groupSIDs = talloc_array_p(*server_info, struct dom_sid *, group_ret))) {
 380                 talloc_free(*server_info);
 381                 return NT_STATUS_NO_MEMORY;
 382         }
 383
 384         /* Need to unroll some nested groups, but not aliases */
 385         for (i = 0; i < group_ret; i++) {
 386                 sidstr = ldb_msg_find_string(group_msgs[i], "objectSid", NULL);
 387                 groupSIDs[i] = dom_sid_parse_talloc(*server_info, sidstr);
 388         }
 389
 390         sidstr = ldb_msg_find_string(msgs[0], "objectSid", NULL);
 391         user_sid = dom_sid_parse_talloc(*server_info, sidstr);
 392         primary_group_sid = dom_sid_parse_talloc(*server_info, sidstr);
 393         rid = samdb_result_uint(msgs[0], "primaryGroupID", ~0);
 394         if (rid == ~0) {
 395                 if (group_ret > 0) {
 396                         primary_group_sid = groupSIDs[0];
 397                 } else {
 398                         primary_group_sid = NULL;
 399                 }
 400         } else {
 401                 primary_group_sid->sub_auths[primary_group_sid->num_auths-1] = rid;
 402         }
 403
 404         (*server_info)->user_sid = user_sid;
 405         (*server_info)->primary_group_sid = primary_group_sid;
 406
 407         (*server_info)->n_domain_groups = group_ret;
 408         (*server_info)->domain_groups = groupSIDs;
 409
 410         (*server_info)->account_name
 411                 = talloc_strdup(*server_info,
 412                                 samdb_result_string(msgs[0], "sAMAccountName", ""));
 413
 414         (*server_info)->domain
 415                 = talloc_strdup(*server_info,
 416                                 samdb_result_string(msgs_domain[0], "name", ""));
 417
 418         (*server_info)->full_name
 419                 = talloc_strdup(*server_info,
 420                                 samdb_result_string(msgs[0], "displayName", ""));
 421
 422         (*server_info)->logon_script
 423                 = talloc_strdup(*server_info,
 424                                 samdb_result_string(msgs[0], "scriptPath", ""));
 425         (*server_info)->profile_path
 426                 = talloc_strdup(*server_info,
 427                                 samdb_result_string(msgs[0], "profilePath", ""));
 428         (*server_info)->home_directory
 429                 = talloc_strdup(*server_info,
 430                                 samdb_result_string(msgs[0], "homeDirectory", ""));
 431
 432         (*server_info)->home_drive
 433                 = talloc_strdup(*server_info,
 434                                 samdb_result_string(msgs[0], "homeDrive", ""));
 435
 436         (*server_info)->last_logon = samdb_result_nttime(msgs[0], "lastLogon", 0);
 437         (*server_info)->last_logoff = samdb_result_nttime(msgs[0], "lastLogoff", 0);
 438         (*server_info)->acct_expiry = samdb_result_nttime(msgs[0], "accountExpires", 0);
 439         (*server_info)->last_password_change = samdb_result_nttime(msgs[0], "pwdLastSet", 0);
 440         (*server_info)->allow_password_change
 441                 = samdb_result_allow_password_change(sam_ctx, mem_ctx,
 442                                                      msgs_domain[0]->dn, msgs[0], "pwdLastSet");
 443         (*server_info)->force_password_change
 444                 = samdb_result_force_password_change(sam_ctx, mem_ctx,
 445                                                      msgs_domain[0]->dn, msgs[0], "pwdLastSet");
 446
 447         (*server_info)->logon_count = samdb_result_uint(msgs[0], "logonCount", 0);
 448         (*server_info)->bad_password_count = samdb_result_uint(msgs[0], "badPwdCount", 0);
 449
 450         (*server_info)->acct_flags = samdb_result_acct_flags(msgs[0], "userAccountControl");
 451
 452         (*server_info)->guest = False;
 453
 454         if (!(*server_info)->account_name
 455             || !(*server_info)->full_name
 456             || !(*server_info)->logon_script
 457             || !(*server_info)->profile_path
 458             || !(*server_info)->home_directory
 459             || !(*server_info)->home_drive) {
 460                 talloc_destroy(*server_info);
 461                 return NT_STATUS_NO_MEMORY;
 462         }
 463
 464         return nt_status;
 465 }
 466
 467 NTSTATUS sam_get_server_info(const char *username, const char *domain, TALLOC_CTX *mem_ctx,
 468                              struct auth_serversupplied_info **server_info)
 469 {
 470         NTSTATUS nt_status;
 471
 472         struct ldb_message **msgs;
 473         struct ldb_message **domain_msgs;
 474         void *sam_ctx;
 475
 476         sam_ctx = samdb_connect(mem_ctx);
 477         if (sam_ctx == NULL) {
 478                 return NT_STATUS_INVALID_SYSTEM_SERVICE;
 479         }
 480
 481         nt_status = sam_search_user(username, domain, mem_ctx, sam_ctx, &msgs, &domain_msgs);
 482         if (!NT_STATUS_IS_OK(nt_status)) {
 483                 return nt_status;
 484         }
 485
 486         nt_status = sam_make_server_info(mem_ctx, sam_ctx, msgs, domain_msgs, server_info);
 487         if (!NT_STATUS_IS_OK(nt_status)) {
 488                 return nt_status;
 489         }
 490
 491         return NT_STATUS_OK;
 492 }
 493
 494 static NTSTATUS check_sam_security_internals(const struct auth_context *auth_context,
 495                                              const char *domain,
 496                                              TALLOC_CTX *mem_ctx,
 497                                              const struct auth_usersupplied_info *user_info,
 498                                              struct auth_serversupplied_info **server_info)
 499 {
 500         NTSTATUS nt_status;
 501
 502         const char *username = user_info->internal_username.str;
 503         struct ldb_message **msgs;
 504         struct ldb_message **domain_msgs;
 505         void *sam_ctx;
 506         DATA_BLOB user_sess_key, lm_sess_key;
 507
 508         sam_ctx = samdb_connect(mem_ctx);
 509         if (sam_ctx == NULL) {
 510                 return NT_STATUS_INVALID_SYSTEM_SERVICE;
 511         }
 512
 513         nt_status = sam_search_user(username, domain, mem_ctx, sam_ctx, &msgs, &domain_msgs);
 514         if (!NT_STATUS_IS_OK(nt_status)) {
 515                 return nt_status;
 516         }
 517
 518         nt_status = sam_check_password(auth_context, username, mem_ctx, sam_ctx, msgs, domain_msgs[0]->dn, user_info,
 519                                        &user_sess_key, &lm_sess_key);
 520         if (!NT_STATUS_IS_OK(nt_status)) {
 521                 return nt_status;
 522         }
 523
 524         nt_status = sam_make_server_info(mem_ctx, sam_ctx, msgs, domain_msgs, server_info);
 525         if (!NT_STATUS_IS_OK(nt_status)) {
 526                 return nt_status;
 527         }
 528
 529         talloc_reference(auth_context, *server_info);
 530
 531         (*server_info)->user_session_key = user_sess_key;
 532         (*server_info)->lm_session_key = lm_sess_key;
 533         return NT_STATUS_OK;
 534 }
 535
 536 static NTSTATUS check_sam_security(const struct auth_context *auth_context,
 537                                    void *my_private_data,
 538                                    TALLOC_CTX *mem_ctx,
 539                                    const struct auth_usersupplied_info *user_info,
 540                                    struct auth_serversupplied_info **server_info)
 541 {
 542         return check_sam_security_internals(auth_context, NULL,
 543                                             mem_ctx, user_info, server_info);
 544 }
 545
 546 /* module initialisation */
 547 static NTSTATUS auth_init_sam_ignoredomain(struct auth_context *auth_context,
 548                                            const char *param,
 549                                            struct auth_methods **auth_method)
 550 {
 551         if (!make_auth_methods(auth_context, auth_method)) {
 552                 return NT_STATUS_NO_MEMORY;
 553         }
 554
 555         (*auth_method)->auth = check_sam_security;
 556         (*auth_method)->name = "sam_ignoredomain";
 557         return NT_STATUS_OK;
 558 }
 559
 560
 561 /****************************************************************************
 562 Check SAM security (above) but with a few extra checks.
 563 ****************************************************************************/
 564
 565 static NTSTATUS check_samstrict_security(const struct auth_context *auth_context,
 566                                          void *my_private_data,
 567                                          TALLOC_CTX *mem_ctx,
 568                                          const struct auth_usersupplied_info *user_info,
 569                                          struct auth_serversupplied_info **server_info)
 570 {
 571         const char *domain;
 572         BOOL is_local_name, is_my_domain;
 573
 574         if (!user_info || !auth_context) {
 575                 return NT_STATUS_LOGON_FAILURE;
 576         }
 577
 578         is_local_name = is_myname(user_info->domain.str);
 579         is_my_domain  = strequal(user_info->domain.str, lp_workgroup());
 580
 581         /* check whether or not we service this domain/workgroup name */
 582
 583         switch ( lp_server_role() ) {
 584                 case ROLE_STANDALONE:
 585                 case ROLE_DOMAIN_MEMBER:
 586                         if ( !is_local_name ) {
 587                                 DEBUG(6,("check_samstrict_security: %s is not one of my local names (%s)\n",
 588                                         user_info->domain.str, (lp_server_role() == ROLE_DOMAIN_MEMBER
 589                                         ? "ROLE_DOMAIN_MEMBER" : "ROLE_STANDALONE") ));
 590                                 return NT_STATUS_NOT_IMPLEMENTED;
 591                         }
 592                         domain = lp_netbios_name();
 593                         break;
 594                 case ROLE_DOMAIN_PDC:
 595                 case ROLE_DOMAIN_BDC:
 596                         if ( !is_local_name && !is_my_domain ) {
 597                                 DEBUG(6,("check_samstrict_security: %s is not one of my local names or domain name (DC)\n",
 598                                         user_info->domain.str));
 599                                 return NT_STATUS_NOT_IMPLEMENTED;
 600                         }
 601                         domain = lp_workgroup();
 602                         break;
 603                 default: /* name is ok */
 604                         domain = user_info->domain.str;
 605                         break;
 606         }
 607
 608         return check_sam_security_internals(auth_context, domain, mem_ctx, user_info, server_info);
 609 }
 610
 611 /* module initialisation */
 612 static NTSTATUS auth_init_sam(struct auth_context *auth_context,
 613                               const char *param,
 614                               struct auth_methods **auth_method)
 615 {
 616         if (!make_auth_methods(auth_context, auth_method)) {
 617                 return NT_STATUS_NO_MEMORY;
 618         }
 619
 620         (*auth_method)->auth = check_samstrict_security;
 621         (*auth_method)->name = "sam";
 622         return NT_STATUS_OK;
 623 }
 624
 625 NTSTATUS auth_sam_init(void)
 626 {
 627         NTSTATUS ret;
 628         struct auth_operations ops;
 629
 630         ops.name = "sam";
 631         ops.init = auth_init_sam;
 632         ret = register_backend("auth", &ops);
 633         if (!NT_STATUS_IS_OK(ret)) {
 634                 DEBUG(0,("Failed to register '%s' auth backend!\n",
 635                         ops.name));
 636                 return ret;
 637         }
 638
 639         ops.name = "sam_ignoredomain";
 640         ops.init = auth_init_sam_ignoredomain;
 641         ret = register_backend("auth", &ops);
 642         if (!NT_STATUS_IS_OK(ret)) {
 643                 DEBUG(0,("Failed to register '%s' auth backend!\n",
 644                         ops.name));
 645                 return ret;
 646         }
 647
 648         return ret;
 649 }