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    Copyright (C) Stefan Metzmacher                         2005
   7
   8    This program is free software; you can redistribute it and/or modify
   9    it under the terms of the GNU General Public License as published by
  10    the Free Software Foundation; either version 2 of the License, or
  11    (at your option) any later version.
  12
  13    This program is distributed in the hope that it will be useful,
  14    but WITHOUT ANY WARRANTY; without even the implied warranty of
  15    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16    GNU General Public License for more details.
  17
  18    You should have received a copy of the GNU General Public License
  19    along with this program; if not, write to the Free Software
  20    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  21 */
  22
  23 #include "includes.h"
  24 #include "librpc/gen_ndr/ndr_samr.h"
  25 #include "system/time.h"
  26 #include "auth/auth.h"
  27 #include "lib/ldb/include/ldb.h"
  28 #include "pstring.h"
  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 static NTSTATUS authsam_password_ok(const struct auth_context *auth_context,
  35                                     TALLOC_CTX *mem_ctx,
  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                                  user_info->account_name));
  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                                  user_info->account_name));
  53                         return NT_STATUS_LOGON_FAILURE;
  54                 }
  55         }
  56
  57         status = ntlm_password_check(mem_ctx, &auth_context->challenge.data,
  58                                      &user_info->lm_resp, &user_info->nt_resp,
  59                                      &user_info->lm_interactive_password,
  60                                      &user_info->nt_interactive_password,
  61                                      user_info->account_name,
  62                                      user_info->client.account_name,
  63                                      user_info->client.domain_name,
  64                                      lm_pwd->hash, nt_pwd->hash,
  65                                      user_sess_key, lm_sess_key);
  66         NT_STATUS_NOT_OK_RETURN(status);
  67
  68         if (user_sess_key && user_sess_key->data) {
  69                 talloc_steal(auth_context, user_sess_key->data);
  70         }
  71         if (lm_sess_key && lm_sess_key->data) {
  72                 talloc_steal(auth_context, lm_sess_key->data);
  73         }
  74
  75         return NT_STATUS_OK;
  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 static NTSTATUS authsam_account_ok(TALLOC_CTX *mem_ctx,
  84                                    uint16_t acct_flags,
  85                                    NTTIME acct_expiry,
  86                                    NTTIME must_change_time,
  87                                    NTTIME last_set_time,
  88                                    const char *workstation_list,
  89                                    const struct auth_usersupplied_info *user_info)
  90 {
  91         DEBUG(4,("authsam_account_ok: Checking SMB password for user %s\n", user_info->account_name));
  92
  93         /* Quit if the account was disabled. */
  94         if (acct_flags & ACB_DISABLED) {
  95                 DEBUG(1,("authsam_account_ok: Account for user '%s' was disabled.\n", user_info->account_name));
  96                 return NT_STATUS_ACCOUNT_DISABLED;
  97         }
  98
  99         /* Quit if the account was locked out. */
 100         if (acct_flags & ACB_AUTOLOCK) {
 101                 DEBUG(1,("authsam_account_ok: Account for user %s was locked out.\n", user_info->account_name));
 102                 return NT_STATUS_ACCOUNT_LOCKED_OUT;
 103         }
 104
 105         /* Test account expire time */
 106         if ((acct_expiry) != -1 && time(NULL) > nt_time_to_unix(acct_expiry)) {
 107                 DEBUG(1,("authsam_account_ok: Account for user '%s' has expired.\n", user_info->account_name));
 108                 DEBUG(3,("authsam_account_ok: Account expired at '%s'.\n",
 109                          nt_time_string(mem_ctx, acct_expiry)));
 110                 return NT_STATUS_ACCOUNT_EXPIRED;
 111         }
 112
 113         if (!(acct_flags & ACB_PWNOEXP)) {
 114                 /* check for immediate expiry "must change at next logon" */
 115                 if (must_change_time == 0 && last_set_time != 0) {
 116                         DEBUG(1,("sam_account_ok: Account for user '%s' password must change!.\n",
 117                                  user_info->account_name));
 118                         return NT_STATUS_PASSWORD_MUST_CHANGE;
 119                 }
 120
 121                 /* check for expired password */
 122                 if ((must_change_time) != 0 && nt_time_to_unix(must_change_time) < time(NULL)) {
 123                         DEBUG(1,("sam_account_ok: Account for user '%s' password expired!.\n",
 124                                  user_info->account_name));
 125                         DEBUG(1,("sam_account_ok: Password expired at '%s' unix time.\n",
 126                                  nt_time_string(mem_ctx, must_change_time)));
 127                         return NT_STATUS_PASSWORD_EXPIRED;
 128                 }
 129         }
 130
 131         /* Test workstation. Workstation list is comma separated. */
 132         if (workstation_list && *workstation_list) {
 133                 BOOL invalid_ws = True;
 134                 const char *s = workstation_list;
 135
 136                 fstring tok;
 137
 138                 while (next_token(&s, tok, ",", sizeof(tok))) {
 139                         DEBUG(10,("sam_account_ok: checking for workstation match '%s' and '%s'\n",
 140                                   tok, user_info->workstation_name));
 141
 142                         if (strequal(tok, user_info->workstation_name)) {
 143                                 invalid_ws = False;
 144
 145                                 break;
 146                         }
 147                 }
 148
 149                 if (invalid_ws) {
 150                         return NT_STATUS_INVALID_WORKSTATION;
 151                 }
 152         }
 153
 154         if (acct_flags & ACB_DOMTRUST) {
 155                 DEBUG(2,("sam_account_ok: Domain trust account %s denied by server\n", user_info->account_name));
 156                 return NT_STATUS_NOLOGON_INTERDOMAIN_TRUST_ACCOUNT;
 157         }
 158
 159         if (acct_flags & ACB_SVRTRUST) {
 160                 DEBUG(2,("sam_account_ok: Server trust account %s denied by server\n", user_info->account_name));
 161                 return NT_STATUS_NOLOGON_SERVER_TRUST_ACCOUNT;
 162         }
 163
 164         if (acct_flags & ACB_WSTRUST) {
 165                 DEBUG(4,("sam_account_ok: Wksta trust account %s denied by server\n", user_info->account_name));
 166                 return NT_STATUS_NOLOGON_WORKSTATION_TRUST_ACCOUNT;
 167         }
 168
 169         return NT_STATUS_OK;
 170 }
 171
 172 /****************************************************************************
 173  Look for the specified user in the sam, return ldb result structures
 174 ****************************************************************************/
 175
 176 static NTSTATUS authsam_search_account(TALLOC_CTX *mem_ctx, void *sam_ctx,
 177                                        const char *account_name,
 178                                        const char *domain_name,
 179                                        struct ldb_message ***ret_msgs,
 180                                        struct ldb_message ***ret_msgs_domain)
 181 {
 182         struct ldb_message **msgs_tmp;
 183         struct ldb_message **msgs;
 184         struct ldb_message **msgs_domain;
 185
 186         int ret;
 187         int ret_domain;
 188
 189         const char *domain_dn = NULL;
 190
 191         const char *attrs[] = {"unicodePwd", "lmPwdHash", "ntPwdHash",
 192                                "userAccountControl",
 193                                "pwdLastSet",
 194                                "accountExpires",
 195                                "objectSid",
 196                                "userWorkstations",
 197
 198                                /* required for server_info, not access control: */
 199                                "sAMAccountName",
 200                                "displayName",
 201                                "scriptPath",
 202                                "profilePath",
 203                                "homeDirectory",
 204                                "homeDrive",
 205                                "lastLogon",
 206                                "lastLogoff",
 207                                "accountExpires",
 208                                "badPwdCount",
 209                                "logonCount",
 210                                "primaryGroupID",
 211                                NULL,
 212         };
 213
 214         const char *domain_attrs[] =  {"nETBIOSName", "nCName"};
 215
 216         if (domain_name) {
 217                 /* find the domain's DN */
 218                 ret_domain = gendb_search(sam_ctx, mem_ctx, NULL, &msgs_domain, domain_attrs,
 219                                           "(&(&(|(&(dnsRoot=%s)(nETBIOSName=*))(nETBIOSName=%s))(objectclass=crossRef))(ncName=*))",
 220                                           domain_name, domain_name);
 221                 if (ret_domain == -1) {
 222                         return NT_STATUS_INTERNAL_DB_CORRUPTION;
 223                 }
 224
 225                 if (ret_domain == 0) {
 226                         DEBUG(3,("sam_search_user: Couldn't find domain [%s] in samdb.\n",
 227                                  domain_name));
 228                         return NT_STATUS_NO_SUCH_USER;
 229                 }
 230
 231                 if (ret_domain > 1) {
 232                         DEBUG(0,("Found %d records matching domain [%s]\n",
 233                                  ret_domain, domain_name));
 234                         return NT_STATUS_INTERNAL_DB_CORRUPTION;
 235                 }
 236
 237                 domain_dn = samdb_result_string(msgs_domain[0], "nCName", NULL);
 238         }
 239
 240         /* pull the user attributes */
 241         ret = gendb_search(sam_ctx, mem_ctx, domain_dn, &msgs, attrs,
 242                            "(&(sAMAccountName=%s)(objectclass=user))",
 243                            account_name);
 244         if (ret == -1) {
 245                 return NT_STATUS_INTERNAL_DB_CORRUPTION;
 246         }
 247
 248         if (ret == 0) {
 249                 DEBUG(3,("sam_search_user: Couldn't find user [%s] in samdb.\n",
 250                          account_name));
 251                 return NT_STATUS_NO_SUCH_USER;
 252         }
 253
 254         if (ret > 1) {
 255                 DEBUG(0,("Found %d records matching user [%s]\n", ret, account_name));
 256                 return NT_STATUS_INTERNAL_DB_CORRUPTION;
 257         }
 258
 259         if (!domain_name) {
 260                 const char *domain_sid;
 261
 262                 domain_sid = samdb_result_sid_prefix(mem_ctx, msgs[0], "objectSid");
 263                 if (!domain_sid) {
 264                         return NT_STATUS_INTERNAL_DB_CORRUPTION;
 265                 }
 266
 267                 /* find the domain's DN */
 268                 ret = gendb_search(sam_ctx, mem_ctx, NULL, &msgs_tmp, NULL,
 269                                    "(&(objectSid=%s)(objectclass=domain))",
 270                                    domain_sid);
 271                 if (ret == -1) {
 272                         return NT_STATUS_INTERNAL_DB_CORRUPTION;
 273                 }
 274
 275                 if (ret == 0) {
 276                         DEBUG(3,("check_sam_security: Couldn't find domain_sid [%s] in passdb file.\n",
 277                                  domain_sid));
 278                         return NT_STATUS_NO_SUCH_USER;
 279                 }
 280
 281                 if (ret > 1) {
 282                         DEBUG(0,("Found %d records matching domain_sid [%s]\n",
 283                                  ret, domain_sid));
 284                         return NT_STATUS_INTERNAL_DB_CORRUPTION;
 285                 }
 286
 287                 ret_domain = gendb_search(sam_ctx, mem_ctx, NULL, &msgs_domain, domain_attrs,
 288                                           "(nCName=%s)", msgs_tmp[0]->dn);
 289
 290                 if (ret_domain == -1) {
 291                         return NT_STATUS_INTERNAL_DB_CORRUPTION;
 292                 }
 293
 294                 if (ret_domain == 0) {
 295                         DEBUG(3,("check_sam_security: Couldn't find domain [%s] in passdb file.\n",
 296                                  msgs_tmp[0]->dn));
 297                         return NT_STATUS_NO_SUCH_USER;
 298                 }
 299
 300                 if (ret_domain > 1) {
 301                         DEBUG(0,("Found %d records matching domain [%s]\n",
 302                                  ret_domain, msgs_tmp[0]->dn));
 303                         return NT_STATUS_INTERNAL_DB_CORRUPTION;
 304                 }
 305
 306         }
 307
 308         *ret_msgs = msgs;
 309         *ret_msgs_domain = msgs_domain;
 310
 311         return NT_STATUS_OK;
 312 }
 313
 314 static NTSTATUS authsam_authenticate(const struct auth_context *auth_context,
 315                                      TALLOC_CTX *mem_ctx, void *sam_ctx,
 316                                      struct ldb_message **msgs,
 317                                      struct ldb_message **msgs_domain,
 318                                      const struct auth_usersupplied_info *user_info,
 319                                      DATA_BLOB *user_sess_key, DATA_BLOB *lm_sess_key)
 320 {
 321         uint16_t acct_flags;
 322         const char *workstation_list;
 323         NTTIME acct_expiry;
 324         NTTIME must_change_time;
 325         NTTIME last_set_time;
 326         struct samr_Password *lm_pwd, *nt_pwd;
 327         NTSTATUS nt_status;
 328         const char *domain_dn = samdb_result_string(msgs_domain[0], "nCName", "");
 329
 330         acct_flags = samdb_result_acct_flags(msgs[0], "sAMAcctFlags");
 331
 332         /* Quit if the account was locked out. */
 333         if (acct_flags & ACB_AUTOLOCK) {
 334                 DEBUG(3,("check_sam_security: Account for user %s was locked out.\n",
 335                          user_info->account_name));
 336                 return NT_STATUS_ACCOUNT_LOCKED_OUT;
 337         }
 338
 339         nt_status = samdb_result_passwords(mem_ctx, msgs[0], &lm_pwd, &nt_pwd);
 340         NT_STATUS_NOT_OK_RETURN(nt_status);
 341
 342         nt_status = authsam_password_ok(auth_context, mem_ctx,
 343                                         acct_flags, lm_pwd, nt_pwd,
 344                                         user_info, user_sess_key, lm_sess_key);
 345         NT_STATUS_NOT_OK_RETURN(nt_status);
 346
 347         acct_expiry = samdb_result_nttime(msgs[0], "accountExpires", 0);
 348         must_change_time = samdb_result_force_password_change(sam_ctx, mem_ctx,
 349                                                               domain_dn, msgs[0],
 350                                                               "pwdLastSet");
 351         last_set_time = samdb_result_nttime(msgs[0], "pwdLastSet", 0);
 352
 353         workstation_list = samdb_result_string(msgs[0], "userWorkstations", NULL);
 354
 355         nt_status = authsam_account_ok(mem_ctx, acct_flags,
 356                                        acct_expiry,
 357                                        must_change_time,
 358                                        last_set_time,
 359                                        workstation_list,
 360                                        user_info);
 361
 362         return nt_status;
 363 }
 364
 365 static NTSTATUS authsam_make_server_info(TALLOC_CTX *mem_ctx, void *sam_ctx,
 366                                          struct ldb_message **msgs,
 367                                          struct ldb_message **msgs_domain,
 368                                          DATA_BLOB user_sess_key, DATA_BLOB lm_sess_key,
 369                                          struct auth_serversupplied_info **_server_info)
 370 {
 371         struct auth_serversupplied_info *server_info;
 372         struct ldb_message **group_msgs;
 373         int group_ret;
 374         const char *group_attrs[3] = { "sAMAccountType", "objectSid", NULL };
 375         /* find list of sids */
 376         struct dom_sid **groupSIDs = NULL;
 377         struct dom_sid *account_sid;
 378         struct dom_sid *primary_group_sid;
 379         const char *str, *ncname;
 380         int i;
 381         uint_t rid;
 382         TALLOC_CTX *tmp_ctx = talloc_new(mem_ctx);
 383
 384         group_ret = gendb_search(sam_ctx,
 385                                  tmp_ctx, NULL, &group_msgs, group_attrs,
 386                                  "(&(member=%s)(sAMAccountType=*))",
 387                                  msgs[0]->dn);
 388         if (group_ret == -1) {
 389                 talloc_free(tmp_ctx);
 390                 return NT_STATUS_INTERNAL_DB_CORRUPTION;
 391         }
 392
 393         server_info = talloc(mem_ctx, struct auth_serversupplied_info);
 394         NT_STATUS_HAVE_NO_MEMORY(server_info);
 395
 396         if (group_ret > 0) {
 397                 groupSIDs = talloc_array(server_info, struct dom_sid *, group_ret);
 398                 NT_STATUS_HAVE_NO_MEMORY(groupSIDs);
 399         }
 400
 401         /* Need to unroll some nested groups, but not aliases */
 402         for (i = 0; i < group_ret; i++) {
 403                 str = ldb_msg_find_string(group_msgs[i], "objectSid", NULL);
 404                 groupSIDs[i] = dom_sid_parse_talloc(groupSIDs, str);
 405                 NT_STATUS_HAVE_NO_MEMORY(groupSIDs[i]);
 406         }
 407
 408         talloc_free(tmp_ctx);
 409
 410         str = ldb_msg_find_string(msgs[0], "objectSid", NULL);
 411         account_sid = dom_sid_parse_talloc(server_info, str);
 412         NT_STATUS_HAVE_NO_MEMORY(account_sid);
 413
 414         primary_group_sid = dom_sid_dup(server_info, account_sid);
 415         NT_STATUS_HAVE_NO_MEMORY(primary_group_sid);
 416
 417         rid = samdb_result_uint(msgs[0], "primaryGroupID", ~0);
 418         if (rid == ~0) {
 419                 if (group_ret > 0) {
 420                         primary_group_sid = groupSIDs[0];
 421                 } else {
 422                         primary_group_sid = NULL;
 423                 }
 424         } else {
 425                 primary_group_sid->sub_auths[primary_group_sid->num_auths-1] = rid;
 426         }
 427
 428         server_info->account_sid = account_sid;
 429         server_info->primary_group_sid = primary_group_sid;
 430
 431         server_info->n_domain_groups = group_ret;
 432         server_info->domain_groups = groupSIDs;
 433
 434         server_info->account_name = talloc_reference(server_info, samdb_result_string(msgs[0], "sAMAccountName", NULL));
 435
 436         server_info->domain_name = talloc_reference(server_info, samdb_result_string(msgs_domain[0], "nETBIOSName", NULL));
 437
 438         str = samdb_result_string(msgs[0], "displayName", "");
 439         server_info->full_name = talloc_strdup(server_info, str);
 440         NT_STATUS_HAVE_NO_MEMORY(server_info->full_name);
 441
 442         str = samdb_result_string(msgs[0], "scriptPath", "");
 443         server_info->logon_script = talloc_strdup(server_info, str);
 444         NT_STATUS_HAVE_NO_MEMORY(server_info->logon_script);
 445
 446         str = samdb_result_string(msgs[0], "profilePath", "");
 447         server_info->profile_path = talloc_strdup(server_info, str);
 448         NT_STATUS_HAVE_NO_MEMORY(server_info->profile_path);
 449
 450         str = samdb_result_string(msgs[0], "homeDirectory", "");
 451         server_info->home_directory = talloc_strdup(server_info, str);
 452         NT_STATUS_HAVE_NO_MEMORY(server_info->home_directory);
 453
 454         str = samdb_result_string(msgs[0], "homeDrive", "");
 455         server_info->home_drive = talloc_strdup(server_info, str);
 456         NT_STATUS_HAVE_NO_MEMORY(server_info->home_drive);
 457
 458         server_info->last_logon = samdb_result_nttime(msgs[0], "lastLogon", 0);
 459         server_info->last_logoff = samdb_result_nttime(msgs[0], "lastLogoff", 0);
 460         server_info->acct_expiry = samdb_result_nttime(msgs[0], "accountExpires", 0);
 461         server_info->last_password_change = samdb_result_nttime(msgs[0], "pwdLastSet", 0);
 462
 463         ncname = samdb_result_string(msgs_domain[0], "nCName", "");
 464
 465         server_info->allow_password_change = samdb_result_allow_password_change(sam_ctx, mem_ctx,
 466                                                         ncname, msgs[0], "pwdLastSet");
 467         server_info->force_password_change = samdb_result_force_password_change(sam_ctx, mem_ctx,
 468                                                         ncname, msgs[0], "pwdLastSet");
 469
 470         server_info->logon_count = samdb_result_uint(msgs[0], "logonCount", 0);
 471         server_info->bad_password_count = samdb_result_uint(msgs[0], "badPwdCount", 0);
 472
 473         server_info->acct_flags = samdb_result_acct_flags(msgs[0], "userAccountControl");
 474
 475         server_info->user_session_key = user_sess_key;
 476         server_info->lm_session_key = lm_sess_key;
 477
 478         server_info->authenticated = True;
 479
 480         *_server_info = server_info;
 481
 482         return NT_STATUS_OK;
 483 }
 484
 485 NTSTATUS sam_get_server_info(TALLOC_CTX *mem_ctx, const char *account_name, const char *domain_name,
 486                              DATA_BLOB user_sess_key, DATA_BLOB lm_sess_key,
 487                              struct auth_serversupplied_info **server_info)
 488 {
 489         NTSTATUS nt_status;
 490
 491         struct ldb_message **msgs;
 492         struct ldb_message **domain_msgs;
 493         void *sam_ctx;
 494
 495         sam_ctx = samdb_connect(mem_ctx);
 496         if (sam_ctx == NULL) {
 497                 return NT_STATUS_INVALID_SYSTEM_SERVICE;
 498         }
 499
 500         nt_status = authsam_search_account(mem_ctx, sam_ctx, account_name, domain_name, &msgs, &domain_msgs);
 501         NT_STATUS_NOT_OK_RETURN(nt_status);
 502
 503         nt_status = authsam_make_server_info(mem_ctx, sam_ctx, msgs, domain_msgs,
 504                                              user_sess_key, lm_sess_key,
 505                                              server_info);
 506         NT_STATUS_NOT_OK_RETURN(nt_status);
 507
 508         talloc_free(msgs);
 509         talloc_free(domain_msgs);
 510
 511         return NT_STATUS_OK;
 512 }
 513
 514 static NTSTATUS authsam_check_password_internals(struct auth_method_context *ctx,
 515                                                  TALLOC_CTX *mem_ctx,
 516                                                  const char *domain,
 517                                                  const struct auth_usersupplied_info *user_info,
 518                                                  struct auth_serversupplied_info **server_info)
 519 {
 520         NTSTATUS nt_status;
 521         const char *account_name = user_info->account_name;
 522         struct ldb_message **msgs;
 523         struct ldb_message **domain_msgs;
 524         void *sam_ctx;
 525         DATA_BLOB user_sess_key, lm_sess_key;
 526
 527         if (!account_name || !*account_name) {
 528                 /* 'not for me' */
 529                 return NT_STATUS_NOT_IMPLEMENTED;
 530         }
 531
 532         sam_ctx = samdb_connect(mem_ctx);
 533         if (sam_ctx == NULL) {
 534                 return NT_STATUS_INVALID_SYSTEM_SERVICE;
 535         }
 536
 537         nt_status = authsam_search_account(mem_ctx, sam_ctx, account_name, domain, &msgs, &domain_msgs);
 538         NT_STATUS_NOT_OK_RETURN(nt_status);
 539
 540         nt_status = authsam_authenticate(ctx->auth_ctx, mem_ctx, sam_ctx, msgs, domain_msgs, user_info,
 541                                          &user_sess_key, &lm_sess_key);
 542         NT_STATUS_NOT_OK_RETURN(nt_status);
 543
 544         nt_status = authsam_make_server_info(mem_ctx, sam_ctx, msgs, domain_msgs,
 545                                              user_sess_key, lm_sess_key,
 546                                              server_info);
 547         NT_STATUS_NOT_OK_RETURN(nt_status);
 548
 549         talloc_free(msgs);
 550         talloc_free(domain_msgs);
 551
 552         return NT_STATUS_OK;
 553 }
 554
 555 static NTSTATUS authsam_ignoredomain_check_password(struct auth_method_context *ctx,
 556                                                     TALLOC_CTX *mem_ctx,
 557                                                     const struct auth_usersupplied_info *user_info,
 558                                                     struct auth_serversupplied_info **server_info)
 559 {
 560         return authsam_check_password_internals(ctx, mem_ctx, NULL, user_info, server_info);
 561 }
 562
 563 /****************************************************************************
 564 Check SAM security (above) but with a few extra checks.
 565 ****************************************************************************/
 566 static NTSTATUS authsam_check_password(struct auth_method_context *ctx,
 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         is_local_name = is_myname(user_info->domain_name);
 575         is_my_domain  = strequal(user_info->domain_name, lp_workgroup());
 576
 577         /* check whether or not we service this domain/workgroup name */
 578         switch (lp_server_role()) {
 579                 case ROLE_STANDALONE:
 580                         domain = lp_netbios_name();
 581                         break;
 582                 case ROLE_DOMAIN_MEMBER:
 583                         if (!is_local_name) {
 584                                 DEBUG(6,("authsam_check_password: %s is not one of my local names (%s)\n",
 585                                         user_info->domain_name, (lp_server_role() == ROLE_DOMAIN_MEMBER
 586                                         ? "ROLE_DOMAIN_MEMBER" : "ROLE_STANDALONE") ));
 587                                 return NT_STATUS_NOT_IMPLEMENTED;
 588                         }
 589                         domain = lp_netbios_name();
 590                         break;
 591                 case ROLE_DOMAIN_PDC:
 592                 case ROLE_DOMAIN_BDC:
 593                         if (!is_local_name && !is_my_domain) {
 594                                 DEBUG(6,("authsam_check_password: %s is not one of my local names or domain name (DC)\n",
 595                                         user_info->domain_name));
 596                                 return NT_STATUS_NOT_IMPLEMENTED;
 597                         }
 598                         domain = lp_workgroup();
 599                         break;
 600                 default:
 601                         DEBUG(6,("authsam_check_password: lp_server_role() has an undefined value\n"));
 602                         return NT_STATUS_NOT_IMPLEMENTED;
 603         }
 604
 605         return authsam_check_password_internals(ctx, mem_ctx, domain, user_info, server_info);
 606 }
 607
 608 static const struct auth_operations sam_ignoredomain_ops = {
 609         .name           = "sam_ignoredomain",
 610         .get_challenge  = auth_get_challenge_not_implemented,
 611         .check_password = authsam_ignoredomain_check_password
 612 };
 613
 614 static const struct auth_operations sam_ops = {
 615         .name           = "sam",
 616         .get_challenge  = auth_get_challenge_not_implemented,
 617         .check_password = authsam_check_password
 618 };
 619
 620 NTSTATUS auth_sam_init(void)
 621 {
 622         NTSTATUS ret;
 623
 624         ret = auth_register(&sam_ops);
 625         if (!NT_STATUS_IS_OK(ret)) {
 626                 DEBUG(0,("Failed to register 'sam' auth backend!\n"));
 627                 return ret;
 628         }
 629
 630         ret = auth_register(&sam_ignoredomain_ops);
 631         if (!NT_STATUS_IS_OK(ret)) {
 632                 DEBUG(0,("Failed to register 'sam_ignoredomain' auth backend!\n"));
 633                 return ret;
 634         }
 635
 636         return ret;
 637 }