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->principal_name.string = talloc_asprintf(
 177                 sam6, "%s@%s", sam6->base.account_name.string,
 178                 sam6->dns_domainname.string);
 179         if (sam6->principal_name.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         const struct PAC_DOMAIN_GROUP_MEMBERSHIP *rg = NULL;
 265
 266         if (logon_info->info3.base.user_flags & NETLOGON_RESOURCE_GROUPS) {
 267                 rg = &logon_info->resource_groups;
 268         }
 269
 270         if (rg == NULL) {
 271                 return NT_STATUS_OK;
 272         }
 273
 274         if (rg->domain_sid == NULL) {
 275                 DEBUG(10, ("Missing Resource Group Domain SID\n"));
 276                 return NT_STATUS_INVALID_PARAMETER;
 277         }
 278
 279         /* The IDL layer would be a better place to check this, but to
 280          * guard the integer addition below, we double-check */
 281         if (rg->groups.count > 65535) {
 282                 DEBUG(10, ("Too much Resource Group RIDs %u\n",
 283                           (unsigned)rg->groups.count));
 284                 return NT_STATUS_INVALID_PARAMETER;
 285         }
 286
 287         /*
 288          * If there are any resource groups (SID Compression) add
 289          * them to the extra sids portion of the info3 in the PAC.
 290          *
 291          * This makes the info3 look like it would if we got the info
 292          * from the DC rather than the PAC.
 293          */
 294
 295         /*
 296          * Construct a SID for each RID in the list and then append it
 297          * to the info3.
 298          */
 299         for (i = 0; i < rg->groups.count; i++) {
 300                 NTSTATUS status;
 301                 struct dom_sid new_sid;
 302                 uint32_t attributes = rg->groups.rids[i].attributes;
 303
 304                 sid_compose(&new_sid,
 305                             rg->domain_sid,
 306                             rg->groups.rids[i].rid);
 307
 308                 DEBUG(10, ("Adding SID %s to extra SIDS\n",
 309                         sid_string_dbg(&new_sid)));
 310
 311                 status = append_netr_SidAttr(info3, &info3->sids,
 312                                         &info3->sidcount,
 313                                         &new_sid,
 314                                         attributes);
 315                 if (!NT_STATUS_IS_OK(status)) {
 316                         DEBUG(1, ("failed to append SID %s to extra SIDS: %s\n",
 317                                 sid_string_dbg(&new_sid),
 318                                 nt_errstr(status)));
 319                         return status;
 320                 }
 321         }
 322
 323         return NT_STATUS_OK;
 324 }
 325
 326 /*
 327  * Create a copy of an info3 struct from the struct PAC_LOGON_INFO,
 328  * then merge resource SIDs, if any, into it. If successful return
 329  * the created info3 struct.
 330  */
 331
 332 NTSTATUS create_info3_from_pac_logon_info(TALLOC_CTX *mem_ctx,
 333                                         const struct PAC_LOGON_INFO *logon_info,
 334                                         struct netr_SamInfo3 **pp_info3)
 335 {
 336         NTSTATUS status;
 337         struct netr_SamInfo3 *info3 = copy_netr_SamInfo3(mem_ctx,
 338                                         &logon_info->info3);
 339         if (info3 == NULL) {
 340                 return NT_STATUS_NO_MEMORY;
 341         }
 342         status = merge_resource_sids(logon_info, info3);
 343         if (!NT_STATUS_IS_OK(status)) {
 344                 TALLOC_FREE(info3);
 345                 return status;
 346         }
 347         *pp_info3 = info3;
 348         return NT_STATUS_OK;
 349 }
 350
 351 /*
 352  * Check if this is a "Unix Users" domain user, or a
 353  * "Unix Groups" domain group, we need to handle it
 354  * in a special way if that's the case.
 355  */
 356
 357 static NTSTATUS SamInfo3_handle_sids(const char *username,
 358                         const struct dom_sid *user_sid,
 359                         const struct dom_sid *group_sid,
 360                         struct netr_SamInfo3 *info3,
 361                         struct dom_sid *domain_sid,
 362                         struct extra_auth_info *extra)
 363 {
 364         if (sid_check_is_in_unix_users(user_sid)) {
 365                 /* in info3 you can only set rids for the user and the
 366                  * primary group, and the domain sid must be that of
 367                  * the sam domain.
 368                  *
 369                  * Store a completely bogus value here.
 370                  * The real SID is stored in the extra sids.
 371                  * Other code will know to look there if (-1) is found
 372                  */
 373                 info3->base.rid = (uint32_t)(-1);
 374                 sid_copy(&extra->user_sid, user_sid);
 375
 376                 DEBUG(10, ("Unix User found. Rid marked as "
 377                         "special and sid (%s) saved as extra sid\n",
 378                         sid_string_dbg(user_sid)));
 379         } else {
 380                 sid_copy(domain_sid, user_sid);
 381                 sid_split_rid(domain_sid, &info3->base.rid);
 382         }
 383
 384         if (is_null_sid(domain_sid)) {
 385                 sid_copy(domain_sid, get_global_sam_sid());
 386         }
 387
 388         /* check if this is a "Unix Groups" domain group,
 389          * if so we need special handling */
 390         if (sid_check_is_in_unix_groups(group_sid)) {
 391                 /* in info3 you can only set rids for the user and the
 392                  * primary group, and the domain sid must be that of
 393                  * the sam domain.
 394                  *
 395                  * Store a completely bogus value here.
 396                  * The real SID is stored in the extra sids.
 397                  * Other code will know to look there if (-1) is found
 398                  */
 399                 info3->base.primary_gid = (uint32_t)(-1);
 400                 sid_copy(&extra->pgid_sid, group_sid);
 401
 402                 DEBUG(10, ("Unix Group found. Rid marked as "
 403                         "special and sid (%s) saved as extra sid\n",
 404                         sid_string_dbg(group_sid)));
 405         } else {
 406                 bool ok = sid_peek_check_rid(domain_sid, group_sid,
 407                                         &info3->base.primary_gid);
 408                 if (!ok) {
 409                         DEBUG(1, ("The primary group domain sid(%s) does not "
 410                                 "match the domain sid(%s) for %s(%s)\n",
 411                                 sid_string_dbg(group_sid),
 412                                 sid_string_dbg(domain_sid),
 413                                 username,
 414                                 sid_string_dbg(user_sid)));
 415                         return NT_STATUS_INVALID_SID;
 416                 }
 417         }
 418         return NT_STATUS_OK;
 419 }
 420
 421 #define RET_NOMEM(ptr) do { \
 422         if (!ptr) { \
 423                 TALLOC_FREE(info3); \
 424                 return NT_STATUS_NO_MEMORY; \
 425         } } while(0)
 426
 427 NTSTATUS samu_to_SamInfo3(TALLOC_CTX *mem_ctx,
 428                           struct samu *samu,
 429                           const char *login_server,
 430                           struct netr_SamInfo3 **_info3,
 431                           struct extra_auth_info *extra)
 432 {
 433         struct netr_SamInfo3 *info3;
 434         const struct dom_sid *user_sid;
 435         const struct dom_sid *group_sid;
 436         struct dom_sid domain_sid;
 437         struct dom_sid *group_sids;
 438         uint32_t num_group_sids = 0;
 439         const char *tmp;
 440         gid_t *gids;
 441         NTSTATUS status;
 442
 443         user_sid = pdb_get_user_sid(samu);
 444         group_sid = pdb_get_group_sid(samu);
 445
 446         if (!user_sid || !group_sid) {
 447                 DEBUG(1, ("Sam account is missing sids!\n"));
 448                 return NT_STATUS_UNSUCCESSFUL;
 449         }
 450
 451         info3 = talloc_zero(mem_ctx, struct netr_SamInfo3);
 452         if (!info3) {
 453                 return NT_STATUS_NO_MEMORY;
 454         }
 455
 456         ZERO_STRUCT(domain_sid);
 457
 458         status = SamInfo3_handle_sids(pdb_get_username(samu),
 459                                 user_sid,
 460                                 group_sid,
 461                                 info3,
 462                                 &domain_sid,
 463                                 extra);
 464
 465         if (!NT_STATUS_IS_OK(status)) {
 466                 TALLOC_FREE(info3);
 467                 return status;
 468         }
 469
 470         unix_to_nt_time(&info3->base.logon_time, pdb_get_logon_time(samu));
 471         unix_to_nt_time(&info3->base.logoff_time, get_time_t_max());
 472         unix_to_nt_time(&info3->base.kickoff_time, get_time_t_max());
 473         unix_to_nt_time(&info3->base.last_password_change,
 474                         pdb_get_pass_last_set_time(samu));
 475         unix_to_nt_time(&info3->base.allow_password_change,
 476                         pdb_get_pass_can_change_time(samu));
 477         unix_to_nt_time(&info3->base.force_password_change,
 478                         pdb_get_pass_must_change_time(samu));
 479
 480         tmp = pdb_get_username(samu);
 481         if (tmp) {
 482                 info3->base.account_name.string = talloc_strdup(info3, tmp);
 483                 RET_NOMEM(info3->base.account_name.string);
 484         }
 485         tmp = pdb_get_fullname(samu);
 486         if (tmp) {
 487                 info3->base.full_name.string = talloc_strdup(info3, tmp);
 488                 RET_NOMEM(info3->base.full_name.string);
 489         }
 490         tmp = pdb_get_logon_script(samu);
 491         if (tmp) {
 492                 info3->base.logon_script.string = talloc_strdup(info3, tmp);
 493                 RET_NOMEM(info3->base.logon_script.string);
 494         }
 495         tmp = pdb_get_profile_path(samu);
 496         if (tmp) {
 497                 info3->base.profile_path.string = talloc_strdup(info3, tmp);
 498                 RET_NOMEM(info3->base.profile_path.string);
 499         }
 500         tmp = pdb_get_homedir(samu);
 501         if (tmp) {
 502                 info3->base.home_directory.string = talloc_strdup(info3, tmp);
 503                 RET_NOMEM(info3->base.home_directory.string);
 504         }
 505         tmp = pdb_get_dir_drive(samu);
 506         if (tmp) {
 507                 info3->base.home_drive.string = talloc_strdup(info3, tmp);
 508                 RET_NOMEM(info3->base.home_drive.string);
 509         }
 510
 511         info3->base.logon_count = pdb_get_logon_count(samu);
 512         info3->base.bad_password_count = pdb_get_bad_password_count(samu);
 513
 514         info3->base.logon_domain.string = talloc_strdup(info3,
 515                                                   pdb_get_domain(samu));
 516         RET_NOMEM(info3->base.logon_domain.string);
 517
 518         info3->base.domain_sid = dom_sid_dup(info3, &domain_sid);
 519         RET_NOMEM(info3->base.domain_sid);
 520
 521         status = pdb_enum_group_memberships(mem_ctx, samu,
 522                                             &group_sids, &gids,
 523                                             &num_group_sids);
 524         if (!NT_STATUS_IS_OK(status)) {
 525                 DEBUG(1, ("Failed to get groups from sam account.\n"));
 526                 TALLOC_FREE(info3);
 527                 return status;
 528         }
 529
 530         if (num_group_sids) {
 531                 status = group_sids_to_info3(info3, group_sids, num_group_sids);
 532                 if (!NT_STATUS_IS_OK(status)) {
 533                         TALLOC_FREE(info3);
 534                         return status;
 535                 }
 536         }
 537
 538         /* We don't need sids and gids after the conversion */
 539         TALLOC_FREE(group_sids);
 540         TALLOC_FREE(gids);
 541         num_group_sids = 0;
 542
 543         /* FIXME: should we add other flags ? */
 544         info3->base.user_flags = NETLOGON_EXTRA_SIDS;
 545
 546         if (login_server) {
 547                 info3->base.logon_server.string = talloc_strdup(info3, login_server);
 548                 RET_NOMEM(info3->base.logon_server.string);
 549         }
 550
 551         info3->base.acct_flags = pdb_get_acct_ctrl(samu);
 552
 553         *_info3 = info3;
 554         return NT_STATUS_OK;
 555 }
 556
 557 NTSTATUS passwd_to_SamInfo3(TALLOC_CTX *mem_ctx,
 558                             const char *unix_username,
 559                             const struct passwd *pwd,
 560                             struct netr_SamInfo3 **pinfo3,
 561                             struct extra_auth_info *extra)
 562 {
 563         struct netr_SamInfo3 *info3;
 564         NTSTATUS status;
 565         TALLOC_CTX *tmp_ctx;
 566         const char *domain_name = NULL;
 567         const char *user_name = NULL;
 568         struct dom_sid domain_sid;
 569         struct dom_sid user_sid;
 570         struct dom_sid group_sid;
 571         enum lsa_SidType type;
 572         uint32_t num_sids = 0;
 573         struct dom_sid *user_sids = NULL;
 574         bool is_null;
 575         bool ok;
 576
 577         tmp_ctx = talloc_stackframe();
 578
 579         ok = lookup_name_smbconf(tmp_ctx,
 580                                  unix_username,
 581                                  LOOKUP_NAME_ALL,
 582                                  &domain_name,
 583                                  &user_name,
 584                                  &user_sid,
 585                                  &type);
 586         if (!ok) {
 587                 status = NT_STATUS_NO_SUCH_USER;
 588                 goto done;
 589         }
 590
 591         if (type != SID_NAME_USER) {
 592                 status = NT_STATUS_NO_SUCH_USER;
 593                 goto done;
 594         }
 595
 596         ok = winbind_lookup_usersids(tmp_ctx,
 597                                      &user_sid,
 598                                      &num_sids,
 599                                      &user_sids);
 600         /* Check if winbind is running */
 601         if (ok) {
 602                 /*
 603                  * Winbind is running and the first element of the user_sids
 604                  * is the primary group.
 605                  */
 606                 if (num_sids > 0) {
 607                         group_sid = user_sids[0];
 608                 }
 609         } else {
 610                 /*
 611                  * Winbind is not running, try to create the group_sid from the
 612                  * passwd group id.
 613                  */
 614
 615                 /*
 616                  * This can lead to a primary group of S-1-22-2-XX which
 617                  * will be rejected by other Samba code.
 618                  */
 619                 gid_to_sid(&group_sid, pwd->pw_gid);
 620         }
 621
 622         /*
 623          * If we are a unix group, or a wellknown/builtin alias,
 624          * set the group_sid to the
 625          * 'Domain Users' RID of 513 which will always resolve to a
 626          * name.
 627          */
 628         if (sid_check_is_in_unix_groups(&group_sid) ||
 629             sid_check_is_in_builtin(&group_sid) ||
 630             sid_check_is_in_wellknown_domain(&group_sid)) {
 631                 if (sid_check_is_in_unix_users(&user_sid)) {
 632                         sid_compose(&group_sid,
 633                                     get_global_sam_sid(),
 634                                     DOMAIN_RID_USERS);
 635                 } else {
 636                         sid_copy(&domain_sid, &user_sid);
 637                         sid_split_rid(&domain_sid, NULL);
 638                         sid_compose(&group_sid,
 639                                     &domain_sid,
 640                                     DOMAIN_RID_USERS);
 641                 }
 642         }
 643
 644         /* Make sure we have a valid group sid */
 645         is_null = is_null_sid(&group_sid);
 646         if (is_null) {
 647                 status = NT_STATUS_NO_SUCH_USER;
 648                 goto done;
 649         }
 650
 651         /* Construct a netr_SamInfo3 from the information we have */
 652         info3 = talloc_zero(tmp_ctx, struct netr_SamInfo3);
 653         if (!info3) {
 654                 status = NT_STATUS_NO_MEMORY;
 655                 goto done;
 656         }
 657
 658         info3->base.account_name.string = talloc_strdup(info3, unix_username);
 659         if (info3->base.account_name.string == NULL) {
 660                 status = NT_STATUS_NO_MEMORY;
 661                 goto done;
 662         }
 663
 664         ZERO_STRUCT(domain_sid);
 665
 666         status = SamInfo3_handle_sids(unix_username,
 667                                 &user_sid,
 668                                 &group_sid,
 669                                 info3,
 670                                 &domain_sid,
 671                                 extra);
 672
 673         if (!NT_STATUS_IS_OK(status)) {
 674                 goto done;
 675         }
 676
 677         info3->base.domain_sid = dom_sid_dup(info3, &domain_sid);
 678         if (info3->base.domain_sid == NULL) {
 679                 status = NT_STATUS_NO_MEMORY;
 680                 goto done;
 681         }
 682
 683         ok = sid_peek_check_rid(&domain_sid, &group_sid,
 684                                 &info3->base.primary_gid);
 685         if (!ok) {
 686                 DEBUG(1, ("The primary group domain sid(%s) does not "
 687                           "match the domain sid(%s) for %s(%s)\n",
 688                           sid_string_dbg(&group_sid),
 689                           sid_string_dbg(&domain_sid),
 690                           unix_username,
 691                           sid_string_dbg(&user_sid)));
 692                 status = NT_STATUS_INVALID_SID;
 693                 goto done;
 694         }
 695
 696         info3->base.acct_flags = ACB_NORMAL;
 697
 698         if (num_sids) {
 699                 status = group_sids_to_info3(info3, user_sids, num_sids);
 700                 if (!NT_STATUS_IS_OK(status)) {
 701                         goto done;
 702                 }
 703         }
 704
 705         *pinfo3 = talloc_steal(mem_ctx, info3);
 706
 707         status = NT_STATUS_OK;
 708 done:
 709         talloc_free(tmp_ctx);
 710
 711         return status;
 712 }
 713
 714 #undef RET_NOMEM
 715
 716 #define RET_NOMEM(ptr) do { \
 717         if (!ptr) { \
 718                 TALLOC_FREE(info3); \
 719                 return NULL; \
 720         } } while(0)
 721
 722 struct netr_SamInfo3 *copy_netr_SamInfo3(TALLOC_CTX *mem_ctx,
 723                                          const struct netr_SamInfo3 *orig)
 724 {
 725         struct netr_SamInfo3 *info3;
 726         unsigned int i;
 727         NTSTATUS status;
 728
 729         info3 = talloc_zero(mem_ctx, struct netr_SamInfo3);
 730         if (!info3) return NULL;
 731
 732         status = copy_netr_SamBaseInfo(info3, &orig->base, &info3->base);
 733         if (!NT_STATUS_IS_OK(status)) {
 734                 TALLOC_FREE(info3);
 735                 return NULL;
 736         }
 737
 738         if (orig->sidcount) {
 739                 info3->sidcount = orig->sidcount;
 740                 info3->sids = talloc_array(info3, struct netr_SidAttr,
 741                                            orig->sidcount);
 742                 RET_NOMEM(info3->sids);
 743                 for (i = 0; i < orig->sidcount; i++) {
 744                         info3->sids[i].sid = dom_sid_dup(info3->sids,
 745                                                             orig->sids[i].sid);
 746                         RET_NOMEM(info3->sids[i].sid);
 747                         info3->sids[i].attributes =
 748                                 orig->sids[i].attributes;
 749                 }
 750         }
 751
 752         return info3;
 753 }
 754