source3/auth/server_info.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3    Authentication utility functions
   4    Copyright (C) Volker Lendecke 2010
   5
   6    This program is free software; you can redistribute it and/or modify
   7    it under the terms of the GNU General Public License as published by
   8    the Free Software Foundation; either version 3 of the License, or
   9    (at your option) any later version.
  10
  11    This program is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14    GNU General Public License for more details.
  15
  16    You should have received a copy of the GNU General Public License
  17    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  18 */
  19
  20 #include "includes.h"
  21 #include "auth.h"
  22 #include "../lib/crypto/arcfour.h"
  23 #include "../librpc/gen_ndr/netlogon.h"
  24 #include "../libcli/security/security.h"
  25 #include "rpc_client/util_netlogon.h"
  26 #include "nsswitch/libwbclient/wbclient.h"
  27 #include "passdb.h"
  28
  29 #undef DBGC_CLASS
  30 #define DBGC_CLASS DBGC_AUTH
  31
  32 /***************************************************************************
  33  Make a server_info struct. Free with TALLOC_FREE().
  34 ***************************************************************************/
  35
  36 struct auth_serversupplied_info *make_server_info(TALLOC_CTX *mem_ctx)
  37 {
  38         struct auth_serversupplied_info *result;
  39
  40         result = talloc_zero(mem_ctx, struct auth_serversupplied_info);
  41         if (result == NULL) {
  42                 DEBUG(0, ("talloc failed\n"));
  43                 return NULL;
  44         }
  45
  46         /* Initialise the uid and gid values to something non-zero
  47            which may save us from giving away root access if there
  48            is a bug in allocating these fields. */
  49
  50         result->utok.uid = -1;
  51         result->utok.gid = -1;
  52
  53         return result;
  54 }
  55
  56 /****************************************************************************
  57  inits a netr_SamInfo2 structure from an auth_serversupplied_info. sam2 must
  58  already be initialized and is used as the talloc parent for its members.
  59 *****************************************************************************/
  60
  61 NTSTATUS serverinfo_to_SamInfo2(struct auth_serversupplied_info *server_info,
  62                                 uint8_t *pipe_session_key,
  63                                 size_t pipe_session_key_len,
  64                                 struct netr_SamInfo2 *sam2)
  65 {
  66         struct netr_SamInfo3 *info3;
  67
  68         info3 = copy_netr_SamInfo3(sam2, server_info->info3);
  69         if (!info3) {
  70                 return NT_STATUS_NO_MEMORY;
  71         }
  72
  73         if (server_info->session_key.length) {
  74                 memcpy(info3->base.key.key,
  75                        server_info->session_key.data,
  76                        MIN(sizeof(info3->base.key.key),
  77                            server_info->session_key.length));
  78                 if (pipe_session_key) {
  79                         arcfour_crypt(info3->base.key.key,
  80                                       pipe_session_key, 16);
  81                 }
  82         }
  83         if (server_info->lm_session_key.length) {
  84                 memcpy(info3->base.LMSessKey.key,
  85                        server_info->lm_session_key.data,
  86                        MIN(sizeof(info3->base.LMSessKey.key),
  87                            server_info->lm_session_key.length));
  88                 if (pipe_session_key) {
  89                         arcfour_crypt(info3->base.LMSessKey.key,
  90                                       pipe_session_key, 8);
  91                 }
  92         }
  93
  94         sam2->base = info3->base;
  95
  96         return NT_STATUS_OK;
  97 }
  98
  99 /****************************************************************************
 100  inits a netr_SamInfo3 structure from an auth_serversupplied_info. sam3 must
 101  already be initialized and is used as the talloc parent for its members.
 102 *****************************************************************************/
 103
 104 NTSTATUS serverinfo_to_SamInfo3(const struct auth_serversupplied_info *server_info,
 105                                 uint8_t *pipe_session_key,
 106                                 size_t pipe_session_key_len,
 107                                 struct netr_SamInfo3 *sam3)
 108 {
 109         struct netr_SamInfo3 *info3;
 110
 111         info3 = copy_netr_SamInfo3(sam3, server_info->info3);
 112         if (!info3) {
 113                 return NT_STATUS_NO_MEMORY;
 114         }
 115
 116         if (server_info->session_key.length) {
 117                 memcpy(info3->base.key.key,
 118                        server_info->session_key.data,
 119                        MIN(sizeof(info3->base.key.key),
 120                            server_info->session_key.length));
 121                 if (pipe_session_key) {
 122                         arcfour_crypt(info3->base.key.key,
 123                                       pipe_session_key, 16);
 124                 }
 125         }
 126         if (server_info->lm_session_key.length) {
 127                 memcpy(info3->base.LMSessKey.key,
 128                        server_info->lm_session_key.data,
 129                        MIN(sizeof(info3->base.LMSessKey.key),
 130                            server_info->lm_session_key.length));
 131                 if (pipe_session_key) {
 132                         arcfour_crypt(info3->base.LMSessKey.key,
 133                                       pipe_session_key, 8);
 134                 }
 135         }
 136
 137         sam3->base = info3->base;
 138
 139         sam3->sidcount          = 0;
 140         sam3->sids              = NULL;
 141
 142         return NT_STATUS_OK;
 143 }
 144
 145 /****************************************************************************
 146  inits a netr_SamInfo6 structure from an auth_serversupplied_info. sam6 must
 147  already be initialized and is used as the talloc parent for its members.
 148 *****************************************************************************/
 149
 150 NTSTATUS serverinfo_to_SamInfo6(struct auth_serversupplied_info *server_info,
 151                                 uint8_t *pipe_session_key,
 152                                 size_t pipe_session_key_len,
 153                                 struct netr_SamInfo6 *sam6)
 154 {
 155         struct pdb_domain_info *dominfo;
 156         struct netr_SamInfo3 *info3;
 157
 158         if ((pdb_capabilities() & PDB_CAP_ADS) == 0) {
 159                 DEBUG(10,("Not adding validation info level 6 "
 160                            "without ADS passdb backend\n"));
 161                 return NT_STATUS_INVALID_INFO_CLASS;
 162         }
 163
 164         dominfo = pdb_get_domain_info(sam6);
 165         if (dominfo == NULL) {
 166                 return NT_STATUS_NO_MEMORY;
 167         }
 168
 169         info3 = copy_netr_SamInfo3(sam6, server_info->info3);
 170         if (!info3) {
 171                 return NT_STATUS_NO_MEMORY;
 172         }
 173
 174         if (server_info->session_key.length) {
 175                 memcpy(info3->base.key.key,
 176                        server_info->session_key.data,
 177                        MIN(sizeof(info3->base.key.key),
 178                            server_info->session_key.length));
 179                 if (pipe_session_key) {
 180                         arcfour_crypt(info3->base.key.key,
 181                                       pipe_session_key, 16);
 182                 }
 183         }
 184         if (server_info->lm_session_key.length) {
 185                 memcpy(info3->base.LMSessKey.key,
 186                        server_info->lm_session_key.data,
 187                        MIN(sizeof(info3->base.LMSessKey.key),
 188                            server_info->lm_session_key.length));
 189                 if (pipe_session_key) {
 190                         arcfour_crypt(info3->base.LMSessKey.key,
 191                                       pipe_session_key, 8);
 192                 }
 193         }
 194
 195         sam6->base = info3->base;
 196
 197         sam6->sidcount          = 0;
 198         sam6->sids              = NULL;
 199
 200         sam6->dns_domainname.string = talloc_strdup(sam6, dominfo->dns_domain);
 201         if (sam6->dns_domainname.string == NULL) {
 202                 return NT_STATUS_NO_MEMORY;
 203         }
 204
 205         sam6->principle.string  = talloc_asprintf(sam6, "%s@%s",
 206                                                   sam6->base.account_name.string,
 207                                                   sam6->dns_domainname.string);
 208         if (sam6->principle.string == NULL) {
 209                 return NT_STATUS_NO_MEMORY;
 210         }
 211
 212         return NT_STATUS_OK;
 213 }
 214
 215 static NTSTATUS append_netr_SidAttr(TALLOC_CTX *mem_ctx,
 216                                     struct netr_SidAttr **sids,
 217                                     uint32_t *count,
 218                                     const struct dom_sid2 *asid,
 219                                     uint32_t attributes)
 220 {
 221         uint32_t t = *count;
 222
 223         *sids = talloc_realloc(mem_ctx, *sids, struct netr_SidAttr, t + 1);
 224         if (*sids == NULL) {
 225                 return NT_STATUS_NO_MEMORY;
 226         }
 227         (*sids)[t].sid = dom_sid_dup(*sids, asid);
 228         if ((*sids)[t].sid == NULL) {
 229                 return NT_STATUS_NO_MEMORY;
 230         }
 231         (*sids)[t].attributes = attributes;
 232         *count = t + 1;
 233
 234         return NT_STATUS_OK;
 235 }
 236
 237 /* Fills the samr_RidWithAttributeArray with the provided sids.
 238  * If it happens that we have additional groups that do not belong
 239  * to the domain, add their sids as extra sids */
 240 static NTSTATUS group_sids_to_info3(struct netr_SamInfo3 *info3,
 241                                     const struct dom_sid *sids,
 242                                     size_t num_sids)
 243 {
 244         uint32_t attributes = SE_GROUP_MANDATORY |
 245                                 SE_GROUP_ENABLED_BY_DEFAULT |
 246                                 SE_GROUP_ENABLED;
 247         struct samr_RidWithAttributeArray *groups;
 248         struct dom_sid *domain_sid;
 249         unsigned int i;
 250         NTSTATUS status;
 251         uint32_t rid;
 252         bool ok;
 253
 254         domain_sid = info3->base.domain_sid;
 255         groups = &info3->base.groups;
 256
 257         groups->rids = talloc_array(info3,
 258                                     struct samr_RidWithAttribute, num_sids);
 259         if (!groups->rids) {
 260                 return NT_STATUS_NO_MEMORY;
 261         }
 262
 263         for (i = 0; i < num_sids; i++) {
 264                 ok = sid_peek_check_rid(domain_sid, &sids[i], &rid);
 265                 if (ok) {
 266
 267                         /* if it is the primary gid, skip it, we
 268                          * obviously already have it */
 269                         if (info3->base.primary_gid == rid) continue;
 270
 271                         /* store domain group rid */
 272                         groups->rids[groups->count].rid = rid;
 273                         groups->rids[groups->count].attributes = attributes;
 274                         groups->count++;
 275                         continue;
 276                 }
 277
 278                 /* if this wasn't a domain sid, add it as extra sid */
 279                 status = append_netr_SidAttr(info3, &info3->sids,
 280                                              &info3->sidcount,
 281                                              &sids[i], attributes);
 282                 if (!NT_STATUS_IS_OK(status)) {
 283                         return status;
 284                 }
 285         }
 286
 287         return NT_STATUS_OK;
 288 }
 289
 290 #define RET_NOMEM(ptr) do { \
 291         if (!ptr) { \
 292                 TALLOC_FREE(info3); \
 293                 return NT_STATUS_NO_MEMORY; \
 294         } } while(0)
 295
 296 NTSTATUS samu_to_SamInfo3(TALLOC_CTX *mem_ctx,
 297                           struct samu *samu,
 298                           const char *login_server,
 299                           struct netr_SamInfo3 **_info3,
 300                           struct extra_auth_info *extra)
 301 {
 302         struct netr_SamInfo3 *info3;
 303         const struct dom_sid *user_sid;
 304         const struct dom_sid *group_sid;
 305         struct dom_sid domain_sid;
 306         struct dom_sid *group_sids;
 307         uint32_t num_group_sids = 0;
 308         const char *tmp;
 309         gid_t *gids;
 310         NTSTATUS status;
 311         bool ok;
 312
 313         user_sid = pdb_get_user_sid(samu);
 314         group_sid = pdb_get_group_sid(samu);
 315
 316         if (!user_sid || !group_sid) {
 317                 DEBUG(1, ("Sam account is missing sids!\n"));
 318                 return NT_STATUS_UNSUCCESSFUL;
 319         }
 320
 321         info3 = talloc_zero(mem_ctx, struct netr_SamInfo3);
 322         if (!info3) {
 323                 return NT_STATUS_NO_MEMORY;
 324         }
 325
 326         ZERO_STRUCT(domain_sid);
 327
 328         /* check if this is a "Unix Users" domain user,
 329          * we need to handle it in a special way if that's the case */
 330         if (sid_check_is_in_unix_users(user_sid)) {
 331                 /* in info3 you can only set rids for the user and the
 332                  * primary group, and the domain sid must be that of
 333                  * the sam domain.
 334                  *
 335                  * Store a completely bogus value here.
 336                  * The real SID is stored in the extra sids.
 337                  * Other code will know to look there if (-1) is found
 338                  */
 339                 info3->base.rid = (uint32_t)(-1);
 340                 sid_copy(&extra->user_sid, user_sid);
 341
 342                 DEBUG(10, ("Unix User found in struct samu. Rid marked as "
 343                            "special and sid (%s) saved as extra sid\n",
 344                            sid_string_dbg(user_sid)));
 345         } else {
 346                 sid_copy(&domain_sid, user_sid);
 347                 sid_split_rid(&domain_sid, &info3->base.rid);
 348         }
 349
 350         if (is_null_sid(&domain_sid)) {
 351                 sid_copy(&domain_sid, get_global_sam_sid());
 352         }
 353
 354         /* check if this is a "Unix Groups" domain group,
 355          * if so we need special handling */
 356         if (sid_check_is_in_unix_groups(group_sid)) {
 357                 /* in info3 you can only set rids for the user and the
 358                  * primary group, and the domain sid must be that of
 359                  * the sam domain.
 360                  *
 361                  * Store a completely bogus value here.
 362                  * The real SID is stored in the extra sids.
 363                  * Other code will know to look there if (-1) is found
 364                  */
 365                 info3->base.primary_gid = (uint32_t)(-1);
 366                 sid_copy(&extra->pgid_sid, group_sid);
 367
 368                 DEBUG(10, ("Unix Group found in struct samu. Rid marked as "
 369                            "special and sid (%s) saved as extra sid\n",
 370                            sid_string_dbg(group_sid)));
 371
 372         } else {
 373                 ok = sid_peek_check_rid(&domain_sid, group_sid,
 374                                         &info3->base.primary_gid);
 375                 if (!ok) {
 376                         DEBUG(1, ("The primary group domain sid(%s) does not "
 377                                   "match the domain sid(%s) for %s(%s)\n",
 378                                   sid_string_dbg(group_sid),
 379                                   sid_string_dbg(&domain_sid),
 380                                   pdb_get_username(samu),
 381                                   sid_string_dbg(user_sid)));
 382                         TALLOC_FREE(info3);
 383                         return NT_STATUS_UNSUCCESSFUL;
 384                 }
 385         }
 386
 387         unix_to_nt_time(&info3->base.logon_time, pdb_get_logon_time(samu));
 388         unix_to_nt_time(&info3->base.logoff_time, get_time_t_max());
 389         unix_to_nt_time(&info3->base.kickoff_time, get_time_t_max());
 390         unix_to_nt_time(&info3->base.last_password_change,
 391                         pdb_get_pass_last_set_time(samu));
 392         unix_to_nt_time(&info3->base.allow_password_change,
 393                         pdb_get_pass_can_change_time(samu));
 394         unix_to_nt_time(&info3->base.force_password_change,
 395                         pdb_get_pass_must_change_time(samu));
 396
 397         tmp = pdb_get_username(samu);
 398         if (tmp) {
 399                 info3->base.account_name.string = talloc_strdup(info3, tmp);
 400                 RET_NOMEM(info3->base.account_name.string);
 401         }
 402         tmp = pdb_get_fullname(samu);
 403         if (tmp) {
 404                 info3->base.full_name.string = talloc_strdup(info3, tmp);
 405                 RET_NOMEM(info3->base.full_name.string);
 406         }
 407         tmp = pdb_get_logon_script(samu);
 408         if (tmp) {
 409                 info3->base.logon_script.string = talloc_strdup(info3, tmp);
 410                 RET_NOMEM(info3->base.logon_script.string);
 411         }
 412         tmp = pdb_get_profile_path(samu);
 413         if (tmp) {
 414                 info3->base.profile_path.string = talloc_strdup(info3, tmp);
 415                 RET_NOMEM(info3->base.profile_path.string);
 416         }
 417         tmp = pdb_get_homedir(samu);
 418         if (tmp) {
 419                 info3->base.home_directory.string = talloc_strdup(info3, tmp);
 420                 RET_NOMEM(info3->base.home_directory.string);
 421         }
 422         tmp = pdb_get_dir_drive(samu);
 423         if (tmp) {
 424                 info3->base.home_drive.string = talloc_strdup(info3, tmp);
 425                 RET_NOMEM(info3->base.home_drive.string);
 426         }
 427
 428         info3->base.logon_count = pdb_get_logon_count(samu);
 429         info3->base.bad_password_count = pdb_get_bad_password_count(samu);
 430
 431         info3->base.logon_domain.string = talloc_strdup(info3,
 432                                                   pdb_get_domain(samu));
 433         RET_NOMEM(info3->base.logon_domain.string);
 434
 435         info3->base.domain_sid = dom_sid_dup(info3, &domain_sid);
 436         RET_NOMEM(info3->base.domain_sid);
 437
 438         status = pdb_enum_group_memberships(mem_ctx, samu,
 439                                             &group_sids, &gids,
 440                                             &num_group_sids);
 441         if (!NT_STATUS_IS_OK(status)) {
 442                 DEBUG(1, ("Failed to get groups from sam account.\n"));
 443                 TALLOC_FREE(info3);
 444                 return status;
 445         }
 446
 447         if (num_group_sids) {
 448                 status = group_sids_to_info3(info3, group_sids, num_group_sids);
 449                 if (!NT_STATUS_IS_OK(status)) {
 450                         TALLOC_FREE(info3);
 451                         return status;
 452                 }
 453         }
 454
 455         /* We don't need sids and gids after the conversion */
 456         TALLOC_FREE(group_sids);
 457         TALLOC_FREE(gids);
 458         num_group_sids = 0;
 459
 460         /* FIXME: should we add other flags ? */
 461         info3->base.user_flags = NETLOGON_EXTRA_SIDS;
 462
 463         if (login_server) {
 464                 info3->base.logon_server.string = talloc_strdup(info3, login_server);
 465                 RET_NOMEM(info3->base.logon_server.string);
 466         }
 467
 468         info3->base.acct_flags = pdb_get_acct_ctrl(samu);
 469
 470         *_info3 = info3;
 471         return NT_STATUS_OK;
 472 }
 473
 474 #undef RET_NOMEM
 475
 476 #define RET_NOMEM(ptr) do { \
 477         if (!ptr) { \
 478                 TALLOC_FREE(info3); \
 479                 return NULL; \
 480         } } while(0)
 481
 482 struct netr_SamInfo3 *copy_netr_SamInfo3(TALLOC_CTX *mem_ctx,
 483                                          struct netr_SamInfo3 *orig)
 484 {
 485         struct netr_SamInfo3 *info3;
 486         unsigned int i;
 487         NTSTATUS status;
 488
 489         info3 = talloc_zero(mem_ctx, struct netr_SamInfo3);
 490         if (!info3) return NULL;
 491
 492         status = copy_netr_SamBaseInfo(info3, &orig->base, &info3->base);
 493         if (!NT_STATUS_IS_OK(status)) {
 494                 TALLOC_FREE(info3);
 495                 return NULL;
 496         }
 497
 498         if (orig->sidcount) {
 499                 info3->sidcount = orig->sidcount;
 500                 info3->sids = talloc_array(info3, struct netr_SidAttr,
 501                                            orig->sidcount);
 502                 RET_NOMEM(info3->sids);
 503                 for (i = 0; i < orig->sidcount; i++) {
 504                         info3->sids[i].sid = dom_sid_dup(info3->sids,
 505                                                             orig->sids[i].sid);
 506                         RET_NOMEM(info3->sids[i].sid);
 507                         info3->sids[i].attributes =
 508                                 orig->sids[i].attributes;
 509                 }
 510         }
 511
 512         return info3;
 513 }
 514
 515 static NTSTATUS wbcsids_to_samr_RidWithAttributeArray(
 516                                 TALLOC_CTX *mem_ctx,
 517                                 struct samr_RidWithAttributeArray *groups,
 518                                 const struct dom_sid *domain_sid,
 519                                 const struct wbcSidWithAttr *sids,
 520                                 size_t num_sids)
 521 {
 522         unsigned int i;
 523         bool ok;
 524
 525         groups->rids = talloc_array(mem_ctx,
 526                                     struct samr_RidWithAttribute, num_sids);
 527         if (!groups->rids) {
 528                 return NT_STATUS_NO_MEMORY;
 529         }
 530
 531         /* a wbcDomainSid is the same as a dom_sid */
 532         for (i = 0; i < num_sids; i++) {
 533                 ok = sid_peek_check_rid(domain_sid,
 534                                         (const struct dom_sid *)&sids[i].sid,
 535                                         &groups->rids[i].rid);
 536                 if (!ok) continue;
 537
 538                 groups->rids[i].attributes = SE_GROUP_MANDATORY |
 539                                              SE_GROUP_ENABLED_BY_DEFAULT |
 540                                              SE_GROUP_ENABLED;
 541                 groups->count++;
 542         }
 543
 544         return NT_STATUS_OK;
 545 }
 546
 547 struct netr_SamInfo3 *wbcAuthUserInfo_to_netr_SamInfo3(TALLOC_CTX *mem_ctx,
 548                                         const struct wbcAuthUserInfo *info)
 549 {
 550         struct netr_SamInfo3 *info3;
 551         struct dom_sid user_sid;
 552         struct dom_sid group_sid;
 553         struct dom_sid domain_sid;
 554         NTSTATUS status;
 555         bool ok;
 556
 557         memcpy(&user_sid, &info->sids[0].sid, sizeof(user_sid));
 558         memcpy(&group_sid, &info->sids[1].sid, sizeof(group_sid));
 559
 560         info3 = talloc_zero(mem_ctx, struct netr_SamInfo3);
 561         if (!info3) return NULL;
 562
 563         info3->base.logon_time = info->logon_time;
 564         info3->base.logoff_time = info->logoff_time;
 565         info3->base.kickoff_time = info->kickoff_time;
 566         unix_to_nt_time(&info3->base.last_password_change, info->pass_last_set_time);
 567         unix_to_nt_time(&info3->base.allow_password_change,
 568                         info->pass_can_change_time);
 569         unix_to_nt_time(&info3->base.force_password_change,
 570                         info->pass_must_change_time);
 571
 572         if (info->account_name) {
 573                 info3->base.account_name.string =
 574                                 talloc_strdup(info3, info->account_name);
 575                 RET_NOMEM(info3->base.account_name.string);
 576         }
 577         if (info->full_name) {
 578                 info3->base.full_name.string =
 579                                 talloc_strdup(info3, info->full_name);
 580                 RET_NOMEM(info3->base.full_name.string);
 581         }
 582         if (info->logon_script) {
 583                 info3->base.logon_script.string =
 584                                 talloc_strdup(info3, info->logon_script);
 585                 RET_NOMEM(info3->base.logon_script.string);
 586         }
 587         if (info->profile_path) {
 588                 info3->base.profile_path.string =
 589                                 talloc_strdup(info3, info->profile_path);
 590                 RET_NOMEM(info3->base.profile_path.string);
 591         }
 592         if (info->home_directory) {
 593                 info3->base.home_directory.string =
 594                                 talloc_strdup(info3, info->home_directory);
 595                 RET_NOMEM(info3->base.home_directory.string);
 596         }
 597         if (info->home_drive) {
 598                 info3->base.home_drive.string =
 599                                 talloc_strdup(info3, info->home_drive);
 600                 RET_NOMEM(info3->base.home_drive.string);
 601         }
 602
 603         info3->base.logon_count = info->logon_count;
 604         info3->base.bad_password_count = info->bad_password_count;
 605
 606         sid_copy(&domain_sid, &user_sid);
 607         sid_split_rid(&domain_sid, &info3->base.rid);
 608
 609         ok = sid_peek_check_rid(&domain_sid, &group_sid,
 610                                 &info3->base.primary_gid);
 611         if (!ok) {
 612                 DEBUG(1, ("The primary group sid domain does not"
 613                           "match user sid domain for user: %s\n",
 614                           info->account_name));
 615                 TALLOC_FREE(info3);
 616                 return NULL;
 617         }
 618
 619         status = wbcsids_to_samr_RidWithAttributeArray(info3,
 620                                                        &info3->base.groups,
 621                                                        &domain_sid,
 622                                                        &info->sids[1],
 623                                                        info->num_sids - 1);
 624         if (!NT_STATUS_IS_OK(status)) {
 625                 TALLOC_FREE(info3);
 626                 return NULL;
 627         }
 628
 629         info3->base.user_flags = info->user_flags;
 630         memcpy(info3->base.key.key, info->user_session_key, 16);
 631
 632         if (info->logon_server) {
 633                 info3->base.logon_server.string =
 634                                 talloc_strdup(info3, info->logon_server);
 635                 RET_NOMEM(info3->base.logon_server.string);
 636         }
 637         if (info->domain_name) {
 638                 info3->base.logon_domain.string =
 639                                 talloc_strdup(info3, info->domain_name);
 640                 RET_NOMEM(info3->base.logon_domain.string);
 641         }
 642
 643         info3->base.domain_sid = dom_sid_dup(info3, &domain_sid);
 644         RET_NOMEM(info3->base.domain_sid);
 645
 646         memcpy(info3->base.LMSessKey.key, info->lm_session_key, 8);
 647         info3->base.acct_flags = info->acct_flags;
 648
 649         return info3;
 650 }