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 "lib/winbind_util.h"
  28 #include "passdb.h"
  29
  30 #undef DBGC_CLASS
  31 #define DBGC_CLASS DBGC_AUTH
  32
  33 /***************************************************************************
  34  Make a server_info struct. Free with TALLOC_FREE().
  35 ***************************************************************************/
  36
  37 struct auth_serversupplied_info *make_server_info(TALLOC_CTX *mem_ctx)
  38 {
  39         struct auth_serversupplied_info *result;
  40
  41         result = talloc_zero(mem_ctx, struct auth_serversupplied_info);
  42         if (result == NULL) {
  43                 DEBUG(0, ("talloc failed\n"));
  44                 return NULL;
  45         }
  46
  47         /* Initialise the uid and gid values to something non-zero
  48            which may save us from giving away root access if there
  49            is a bug in allocating these fields. */
  50
  51         result->utok.uid = -1;
  52         result->utok.gid = -1;
  53
  54         return result;
  55 }
  56
  57 /****************************************************************************
  58  inits a netr_SamInfo2 structure from an auth_serversupplied_info. sam2 must
  59  already be initialized and is used as the talloc parent for its members.
  60 *****************************************************************************/
  61
  62 NTSTATUS serverinfo_to_SamInfo2(struct auth_serversupplied_info *server_info,
  63                                 struct netr_SamInfo2 *sam2)
  64 {
  65         struct netr_SamInfo3 *info3;
  66
  67         info3 = copy_netr_SamInfo3(sam2, server_info->info3);
  68         if (!info3) {
  69                 return NT_STATUS_NO_MEMORY;
  70         }
  71
  72         if (server_info->session_key.length) {
  73                 memcpy(info3->base.key.key,
  74                        server_info->session_key.data,
  75                        MIN(sizeof(info3->base.key.key),
  76                            server_info->session_key.length));
  77         }
  78         if (server_info->lm_session_key.length) {
  79                 memcpy(info3->base.LMSessKey.key,
  80                        server_info->lm_session_key.data,
  81                        MIN(sizeof(info3->base.LMSessKey.key),
  82                            server_info->lm_session_key.length));
  83         }
  84
  85         sam2->base = info3->base;
  86
  87         return NT_STATUS_OK;
  88 }
  89
  90 /****************************************************************************
  91  inits a netr_SamInfo3 structure from an auth_serversupplied_info. sam3 must
  92  already be initialized and is used as the talloc parent for its members.
  93 *****************************************************************************/
  94
  95 NTSTATUS serverinfo_to_SamInfo3(const struct auth_serversupplied_info *server_info,
  96                                 struct netr_SamInfo3 *sam3)
  97 {
  98         struct netr_SamInfo3 *info3;
  99
 100         info3 = copy_netr_SamInfo3(sam3, server_info->info3);
 101         if (!info3) {
 102                 return NT_STATUS_NO_MEMORY;
 103         }
 104
 105         if (server_info->session_key.length) {
 106                 memcpy(info3->base.key.key,
 107                        server_info->session_key.data,
 108                        MIN(sizeof(info3->base.key.key),
 109                            server_info->session_key.length));
 110         }
 111         if (server_info->lm_session_key.length) {
 112                 memcpy(info3->base.LMSessKey.key,
 113                        server_info->lm_session_key.data,
 114                        MIN(sizeof(info3->base.LMSessKey.key),
 115                            server_info->lm_session_key.length));
 116         }
 117
 118         sam3->base = info3->base;
 119
 120         sam3->sidcount          = 0;
 121         sam3->sids              = NULL;
 122
 123         return NT_STATUS_OK;
 124 }
 125
 126 /****************************************************************************
 127  inits a netr_SamInfo6 structure from an auth_serversupplied_info. sam6 must
 128  already be initialized and is used as the talloc parent for its members.
 129 *****************************************************************************/
 130
 131 NTSTATUS serverinfo_to_SamInfo6(struct auth_serversupplied_info *server_info,
 132                                 struct netr_SamInfo6 *sam6)
 133 {
 134         struct pdb_domain_info *dominfo;
 135         struct netr_SamInfo3 *info3;
 136
 137         if ((pdb_capabilities() & PDB_CAP_ADS) == 0) {
 138                 DEBUG(10,("Not adding validation info level 6 "
 139                            "without ADS passdb backend\n"));
 140                 return NT_STATUS_INVALID_INFO_CLASS;
 141         }
 142
 143         dominfo = pdb_get_domain_info(sam6);
 144         if (dominfo == NULL) {
 145                 return NT_STATUS_NO_MEMORY;
 146         }
 147
 148         info3 = copy_netr_SamInfo3(sam6, server_info->info3);
 149         if (!info3) {
 150                 return NT_STATUS_NO_MEMORY;
 151         }
 152
 153         if (server_info->session_key.length) {
 154                 memcpy(info3->base.key.key,
 155                        server_info->session_key.data,
 156                        MIN(sizeof(info3->base.key.key),
 157                            server_info->session_key.length));
 158         }
 159         if (server_info->lm_session_key.length) {
 160                 memcpy(info3->base.LMSessKey.key,
 161                        server_info->lm_session_key.data,
 162                        MIN(sizeof(info3->base.LMSessKey.key),
 163                            server_info->lm_session_key.length));
 164         }
 165
 166         sam6->base = info3->base;
 167
 168         sam6->sidcount          = 0;
 169         sam6->sids              = NULL;
 170
 171         sam6->dns_domainname.string = talloc_strdup(sam6, dominfo->dns_domain);
 172         if (sam6->dns_domainname.string == NULL) {
 173                 return NT_STATUS_NO_MEMORY;
 174         }
 175
 176         sam6->principle.string  = talloc_asprintf(sam6, "%s@%s",
 177                                                   sam6->base.account_name.string,
 178                                                   sam6->dns_domainname.string);
 179         if (sam6->principle.string == NULL) {
 180                 return NT_STATUS_NO_MEMORY;
 181         }
 182
 183         return NT_STATUS_OK;
 184 }
 185
 186 static NTSTATUS append_netr_SidAttr(TALLOC_CTX *mem_ctx,
 187                                     struct netr_SidAttr **sids,
 188                                     uint32_t *count,
 189                                     const struct dom_sid2 *asid,
 190                                     uint32_t attributes)
 191 {
 192         uint32_t t = *count;
 193
 194         *sids = talloc_realloc(mem_ctx, *sids, struct netr_SidAttr, t + 1);
 195         if (*sids == NULL) {
 196                 return NT_STATUS_NO_MEMORY;
 197         }
 198         (*sids)[t].sid = dom_sid_dup(*sids, asid);
 199         if ((*sids)[t].sid == NULL) {
 200                 return NT_STATUS_NO_MEMORY;
 201         }
 202         (*sids)[t].attributes = attributes;
 203         *count = t + 1;
 204
 205         return NT_STATUS_OK;
 206 }
 207
 208 /* Fills the samr_RidWithAttributeArray with the provided sids.
 209  * If it happens that we have additional groups that do not belong
 210  * to the domain, add their sids as extra sids */
 211 static NTSTATUS group_sids_to_info3(struct netr_SamInfo3 *info3,
 212                                     const struct dom_sid *sids,
 213                                     size_t num_sids)
 214 {
 215         uint32_t attributes = SE_GROUP_MANDATORY |
 216                                 SE_GROUP_ENABLED_BY_DEFAULT |
 217                                 SE_GROUP_ENABLED;
 218         struct samr_RidWithAttributeArray *groups;
 219         struct dom_sid *domain_sid;
 220         unsigned int i;
 221         NTSTATUS status;
 222         uint32_t rid;
 223         bool ok;
 224
 225         domain_sid = info3->base.domain_sid;
 226         groups = &info3->base.groups;
 227
 228         groups->rids = talloc_array(info3,
 229                                     struct samr_RidWithAttribute, num_sids);
 230         if (!groups->rids) {
 231                 return NT_STATUS_NO_MEMORY;
 232         }
 233
 234         for (i = 0; i < num_sids; i++) {
 235                 ok = sid_peek_check_rid(domain_sid, &sids[i], &rid);
 236                 if (ok) {
 237                         /* store domain group rid */
 238                         groups->rids[groups->count].rid = rid;
 239                         groups->rids[groups->count].attributes = attributes;
 240                         groups->count++;
 241                         continue;
 242                 }
 243
 244                 /* if this wasn't a domain sid, add it as extra sid */
 245                 status = append_netr_SidAttr(info3, &info3->sids,
 246                                              &info3->sidcount,
 247                                              &sids[i], attributes);
 248                 if (!NT_STATUS_IS_OK(status)) {
 249                         return status;
 250                 }
 251         }
 252
 253         return NT_STATUS_OK;
 254 }
 255
 256 /*
 257  * Merge resource SIDs, if any, into the passed in info3 structure.
 258  */
 259
 260 static NTSTATUS merge_resource_sids(const struct PAC_LOGON_INFO *logon_info,
 261                                 struct netr_SamInfo3 *info3)
 262 {
 263         uint32_t i = 0;
 264
 265         if (!(logon_info->info3.base.user_flags & NETLOGON_RESOURCE_GROUPS)) {
 266                 return NT_STATUS_OK;
 267         }
 268
 269         /*
 270          * If there are any resource groups (SID Compression) add
 271          * them to the extra sids portion of the info3 in the PAC.
 272          *
 273          * This makes the info3 look like it would if we got the info
 274          * from the DC rather than the PAC.
 275          */
 276
 277         /*
 278          * Construct a SID for each RID in the list and then append it
 279          * to the info3.
 280          */
 281         for (i = 0; i < logon_info->res_groups.count; i++) {
 282                 NTSTATUS status;
 283                 struct dom_sid new_sid;
 284                 uint32_t attributes = logon_info->res_groups.rids[i].attributes;
 285
 286                 sid_compose(&new_sid,
 287                         logon_info->res_group_dom_sid,
 288                         logon_info->res_groups.rids[i].rid);
 289
 290                 DEBUG(10, ("Adding SID %s to extra SIDS\n",
 291                         sid_string_dbg(&new_sid)));
 292
 293                 status = append_netr_SidAttr(info3, &info3->sids,
 294                                         &info3->sidcount,
 295                                         &new_sid,
 296                                         attributes);
 297                 if (!NT_STATUS_IS_OK(status)) {
 298                         DEBUG(1, ("failed to append SID %s to extra SIDS: %s\n",
 299                                 sid_string_dbg(&new_sid),
 300                                 nt_errstr(status)));
 301                         return status;
 302                 }
 303         }
 304
 305         return NT_STATUS_OK;
 306 }
 307
 308 /*
 309  * Create a copy of an info3 struct from the struct PAC_LOGON_INFO,
 310  * then merge resource SIDs, if any, into it. If successful return
 311  * the created info3 struct.
 312  */
 313
 314 NTSTATUS create_info3_from_pac_logon_info(TALLOC_CTX *mem_ctx,
 315                                         const struct PAC_LOGON_INFO *logon_info,
 316                                         struct netr_SamInfo3 **pp_info3)
 317 {
 318         NTSTATUS status;
 319         struct netr_SamInfo3 *info3 = copy_netr_SamInfo3(mem_ctx,
 320                                         &logon_info->info3);
 321         if (info3 == NULL) {
 322                 return NT_STATUS_NO_MEMORY;
 323         }
 324         status = merge_resource_sids(logon_info, info3);
 325         if (!NT_STATUS_IS_OK(status)) {
 326                 TALLOC_FREE(info3);
 327                 return status;
 328         }
 329         *pp_info3 = info3;
 330         return NT_STATUS_OK;
 331 }
 332
 333 #define RET_NOMEM(ptr) do { \
 334         if (!ptr) { \
 335                 TALLOC_FREE(info3); \
 336                 return NT_STATUS_NO_MEMORY; \
 337         } } while(0)
 338
 339 NTSTATUS samu_to_SamInfo3(TALLOC_CTX *mem_ctx,
 340                           struct samu *samu,
 341                           const char *login_server,
 342                           struct netr_SamInfo3 **_info3,
 343                           struct extra_auth_info *extra)
 344 {
 345         struct netr_SamInfo3 *info3;
 346         const struct dom_sid *user_sid;
 347         const struct dom_sid *group_sid;
 348         struct dom_sid domain_sid;
 349         struct dom_sid *group_sids;
 350         uint32_t num_group_sids = 0;
 351         const char *tmp;
 352         gid_t *gids;
 353         NTSTATUS status;
 354         bool ok;
 355
 356         user_sid = pdb_get_user_sid(samu);
 357         group_sid = pdb_get_group_sid(samu);
 358
 359         if (!user_sid || !group_sid) {
 360                 DEBUG(1, ("Sam account is missing sids!\n"));
 361                 return NT_STATUS_UNSUCCESSFUL;
 362         }
 363
 364         info3 = talloc_zero(mem_ctx, struct netr_SamInfo3);
 365         if (!info3) {
 366                 return NT_STATUS_NO_MEMORY;
 367         }
 368
 369         ZERO_STRUCT(domain_sid);
 370
 371         /* check if this is a "Unix Users" domain user,
 372          * we need to handle it in a special way if that's the case */
 373         if (sid_check_is_in_unix_users(user_sid)) {
 374                 /* in info3 you can only set rids for the user and the
 375                  * primary group, and the domain sid must be that of
 376                  * the sam domain.
 377                  *
 378                  * Store a completely bogus value here.
 379                  * The real SID is stored in the extra sids.
 380                  * Other code will know to look there if (-1) is found
 381                  */
 382                 info3->base.rid = (uint32_t)(-1);
 383                 sid_copy(&extra->user_sid, user_sid);
 384
 385                 DEBUG(10, ("Unix User found in struct samu. Rid marked as "
 386                            "special and sid (%s) saved as extra sid\n",
 387                            sid_string_dbg(user_sid)));
 388         } else {
 389                 sid_copy(&domain_sid, user_sid);
 390                 sid_split_rid(&domain_sid, &info3->base.rid);
 391         }
 392
 393         if (is_null_sid(&domain_sid)) {
 394                 sid_copy(&domain_sid, get_global_sam_sid());
 395         }
 396
 397         /* check if this is a "Unix Groups" domain group,
 398          * if so we need special handling */
 399         if (sid_check_is_in_unix_groups(group_sid)) {
 400                 /* in info3 you can only set rids for the user and the
 401                  * primary group, and the domain sid must be that of
 402                  * the sam domain.
 403                  *
 404                  * Store a completely bogus value here.
 405                  * The real SID is stored in the extra sids.
 406                  * Other code will know to look there if (-1) is found
 407                  */
 408                 info3->base.primary_gid = (uint32_t)(-1);
 409                 sid_copy(&extra->pgid_sid, group_sid);
 410
 411                 DEBUG(10, ("Unix Group found in struct samu. Rid marked as "
 412                            "special and sid (%s) saved as extra sid\n",
 413                            sid_string_dbg(group_sid)));
 414
 415         } else {
 416                 ok = sid_peek_check_rid(&domain_sid, group_sid,
 417                                         &info3->base.primary_gid);
 418                 if (!ok) {
 419                         DEBUG(1, ("The primary group domain sid(%s) does not "
 420                                   "match the domain sid(%s) for %s(%s)\n",
 421                                   sid_string_dbg(group_sid),
 422                                   sid_string_dbg(&domain_sid),
 423                                   pdb_get_username(samu),
 424                                   sid_string_dbg(user_sid)));
 425                         TALLOC_FREE(info3);
 426                         return NT_STATUS_UNSUCCESSFUL;
 427                 }
 428         }
 429
 430         unix_to_nt_time(&info3->base.logon_time, pdb_get_logon_time(samu));
 431         unix_to_nt_time(&info3->base.logoff_time, get_time_t_max());
 432         unix_to_nt_time(&info3->base.kickoff_time, get_time_t_max());
 433         unix_to_nt_time(&info3->base.last_password_change,
 434                         pdb_get_pass_last_set_time(samu));
 435         unix_to_nt_time(&info3->base.allow_password_change,
 436                         pdb_get_pass_can_change_time(samu));
 437         unix_to_nt_time(&info3->base.force_password_change,
 438                         pdb_get_pass_must_change_time(samu));
 439
 440         tmp = pdb_get_username(samu);
 441         if (tmp) {
 442                 info3->base.account_name.string = talloc_strdup(info3, tmp);
 443                 RET_NOMEM(info3->base.account_name.string);
 444         }
 445         tmp = pdb_get_fullname(samu);
 446         if (tmp) {
 447                 info3->base.full_name.string = talloc_strdup(info3, tmp);
 448                 RET_NOMEM(info3->base.full_name.string);
 449         }
 450         tmp = pdb_get_logon_script(samu);
 451         if (tmp) {
 452                 info3->base.logon_script.string = talloc_strdup(info3, tmp);
 453                 RET_NOMEM(info3->base.logon_script.string);
 454         }
 455         tmp = pdb_get_profile_path(samu);
 456         if (tmp) {
 457                 info3->base.profile_path.string = talloc_strdup(info3, tmp);
 458                 RET_NOMEM(info3->base.profile_path.string);
 459         }
 460         tmp = pdb_get_homedir(samu);
 461         if (tmp) {
 462                 info3->base.home_directory.string = talloc_strdup(info3, tmp);
 463                 RET_NOMEM(info3->base.home_directory.string);
 464         }
 465         tmp = pdb_get_dir_drive(samu);
 466         if (tmp) {
 467                 info3->base.home_drive.string = talloc_strdup(info3, tmp);
 468                 RET_NOMEM(info3->base.home_drive.string);
 469         }
 470
 471         info3->base.logon_count = pdb_get_logon_count(samu);
 472         info3->base.bad_password_count = pdb_get_bad_password_count(samu);
 473
 474         info3->base.logon_domain.string = talloc_strdup(info3,
 475                                                   pdb_get_domain(samu));
 476         RET_NOMEM(info3->base.logon_domain.string);
 477
 478         info3->base.domain_sid = dom_sid_dup(info3, &domain_sid);
 479         RET_NOMEM(info3->base.domain_sid);
 480
 481         status = pdb_enum_group_memberships(mem_ctx, samu,
 482                                             &group_sids, &gids,
 483                                             &num_group_sids);
 484         if (!NT_STATUS_IS_OK(status)) {
 485                 DEBUG(1, ("Failed to get groups from sam account.\n"));
 486                 TALLOC_FREE(info3);
 487                 return status;
 488         }
 489
 490         if (num_group_sids) {
 491                 status = group_sids_to_info3(info3, group_sids, num_group_sids);
 492                 if (!NT_STATUS_IS_OK(status)) {
 493                         TALLOC_FREE(info3);
 494                         return status;
 495                 }
 496         }
 497
 498         /* We don't need sids and gids after the conversion */
 499         TALLOC_FREE(group_sids);
 500         TALLOC_FREE(gids);
 501         num_group_sids = 0;
 502
 503         /* FIXME: should we add other flags ? */
 504         info3->base.user_flags = NETLOGON_EXTRA_SIDS;
 505
 506         if (login_server) {
 507                 info3->base.logon_server.string = talloc_strdup(info3, login_server);
 508                 RET_NOMEM(info3->base.logon_server.string);
 509         }
 510
 511         info3->base.acct_flags = pdb_get_acct_ctrl(samu);
 512
 513         *_info3 = info3;
 514         return NT_STATUS_OK;
 515 }
 516
 517 NTSTATUS passwd_to_SamInfo3(TALLOC_CTX *mem_ctx,
 518                             const char *unix_username,
 519                             const struct passwd *pwd,
 520                             struct netr_SamInfo3 **pinfo3)
 521 {
 522         struct netr_SamInfo3 *info3;
 523         NTSTATUS status;
 524         TALLOC_CTX *tmp_ctx;
 525         const char *domain_name = NULL;
 526         const char *user_name = NULL;
 527         struct dom_sid domain_sid;
 528         struct dom_sid user_sid;
 529         struct dom_sid group_sid;
 530         enum lsa_SidType type;
 531         uint32_t num_sids = 0;
 532         struct dom_sid *user_sids = NULL;
 533         bool is_null;
 534         bool ok;
 535
 536         tmp_ctx = talloc_stackframe();
 537
 538         ok = lookup_name_smbconf(tmp_ctx,
 539                                  unix_username,
 540                                  LOOKUP_NAME_ALL,
 541                                  &domain_name,
 542                                  &user_name,
 543                                  &user_sid,
 544                                  &type);
 545         if (!ok) {
 546                 status = NT_STATUS_NO_SUCH_USER;
 547                 goto done;
 548         }
 549
 550         if (type != SID_NAME_USER) {
 551                 status = NT_STATUS_NO_SUCH_USER;
 552                 goto done;
 553         }
 554
 555         ok = winbind_lookup_usersids(tmp_ctx,
 556                                      &user_sid,
 557                                      &num_sids,
 558                                      &user_sids);
 559         /* Check if winbind is running */
 560         if (ok) {
 561                 /*
 562                  * Winbind is running and the first element of the user_sids
 563                  * is the primary group.
 564                  */
 565                 if (num_sids > 0) {
 566                         group_sid = user_sids[0];
 567                 }
 568         } else {
 569                 /*
 570                  * Winbind is not running, try to create the group_sid from the
 571                  * passwd group id.
 572                  */
 573
 574                 /*
 575                  * This can lead to a primary group of S-1-22-2-XX which
 576                  * will be rejected by other Samba code.
 577                  */
 578                 gid_to_sid(&group_sid, pwd->pw_gid);
 579
 580                 ZERO_STRUCT(domain_sid);
 581
 582                 /*
 583                  * If we are a unix group, set the group_sid to the
 584                  * 'Domain Users' RID of 513 which will always resolve to a
 585                  * name.
 586                  */
 587                 if (sid_check_is_in_unix_groups(&group_sid)) {
 588                         sid_compose(&group_sid,
 589                                     get_global_sam_sid(),
 590                                     DOMAIN_RID_USERS);
 591                 }
 592         }
 593
 594         /* Make sure we have a valid group sid */
 595         is_null = is_null_sid(&group_sid);
 596         if (is_null) {
 597                 status = NT_STATUS_NO_SUCH_USER;
 598                 goto done;
 599         }
 600
 601         /* Construct a netr_SamInfo3 from the information we have */
 602         info3 = talloc_zero(tmp_ctx, struct netr_SamInfo3);
 603         if (!info3) {
 604                 status = NT_STATUS_NO_MEMORY;
 605                 goto done;
 606         }
 607
 608         info3->base.account_name.string = talloc_strdup(info3, unix_username);
 609         if (info3->base.account_name.string == NULL) {
 610                 status = NT_STATUS_NO_MEMORY;
 611                 goto done;
 612         }
 613
 614         ZERO_STRUCT(domain_sid);
 615
 616         sid_copy(&domain_sid, &user_sid);
 617         sid_split_rid(&domain_sid, &info3->base.rid);
 618         info3->base.domain_sid = dom_sid_dup(info3, &domain_sid);
 619
 620         ok = sid_peek_check_rid(&domain_sid, &group_sid,
 621                                 &info3->base.primary_gid);
 622         if (!ok) {
 623                 DEBUG(1, ("The primary group domain sid(%s) does not "
 624                           "match the domain sid(%s) for %s(%s)\n",
 625                           sid_string_dbg(&group_sid),
 626                           sid_string_dbg(&domain_sid),
 627                           unix_username,
 628                           sid_string_dbg(&user_sid)));
 629                 status = NT_STATUS_INVALID_SID;
 630                 goto done;
 631         }
 632
 633         info3->base.acct_flags = ACB_NORMAL;
 634
 635         if (num_sids) {
 636                 status = group_sids_to_info3(info3, user_sids, num_sids);
 637                 if (!NT_STATUS_IS_OK(status)) {
 638                         goto done;
 639                 }
 640         }
 641
 642         *pinfo3 = talloc_steal(mem_ctx, info3);
 643
 644         status = NT_STATUS_OK;
 645 done:
 646         talloc_free(tmp_ctx);
 647
 648         return status;
 649 }
 650
 651 #undef RET_NOMEM
 652
 653 #define RET_NOMEM(ptr) do { \
 654         if (!ptr) { \
 655                 TALLOC_FREE(info3); \
 656                 return NULL; \
 657         } } while(0)
 658
 659 struct netr_SamInfo3 *copy_netr_SamInfo3(TALLOC_CTX *mem_ctx,
 660                                          const struct netr_SamInfo3 *orig)
 661 {
 662         struct netr_SamInfo3 *info3;
 663         unsigned int i;
 664         NTSTATUS status;
 665
 666         info3 = talloc_zero(mem_ctx, struct netr_SamInfo3);
 667         if (!info3) return NULL;
 668
 669         status = copy_netr_SamBaseInfo(info3, &orig->base, &info3->base);
 670         if (!NT_STATUS_IS_OK(status)) {
 671                 TALLOC_FREE(info3);
 672                 return NULL;
 673         }
 674
 675         if (orig->sidcount) {
 676                 info3->sidcount = orig->sidcount;
 677                 info3->sids = talloc_array(info3, struct netr_SidAttr,
 678                                            orig->sidcount);
 679                 RET_NOMEM(info3->sids);
 680                 for (i = 0; i < orig->sidcount; i++) {
 681                         info3->sids[i].sid = dom_sid_dup(info3->sids,
 682                                                             orig->sids[i].sid);
 683                         RET_NOMEM(info3->sids[i].sid);
 684                         info3->sids[i].attributes =
 685                                 orig->sids[i].attributes;
 686                 }
 687         }
 688
 689         return info3;
 690 }
 691