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/util_unixsids.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 = NULL;
  66         NTSTATUS status;
  67
  68         status = copy_netr_SamInfo3(sam2,
  69                                     server_info->info3,
  70                                     &info3);
  71         if (!NT_STATUS_IS_OK(status)) {
  72                 return status;
  73         }
  74
  75         if (server_info->session_key.length) {
  76                 memcpy(info3->base.key.key,
  77                        server_info->session_key.data,
  78                        MIN(sizeof(info3->base.key.key),
  79                            server_info->session_key.length));
  80         }
  81         if (server_info->lm_session_key.length) {
  82                 memcpy(info3->base.LMSessKey.key,
  83                        server_info->lm_session_key.data,
  84                        MIN(sizeof(info3->base.LMSessKey.key),
  85                            server_info->lm_session_key.length));
  86         }
  87
  88         sam2->base = info3->base;
  89
  90         return NT_STATUS_OK;
  91 }
  92
  93 /****************************************************************************
  94  inits a netr_SamInfo3 structure from an auth_serversupplied_info. sam3 must
  95  already be initialized and is used as the talloc parent for its members.
  96 *****************************************************************************/
  97
  98 NTSTATUS serverinfo_to_SamInfo3(const struct auth_serversupplied_info *server_info,
  99                                 struct netr_SamInfo3 *sam3)
 100 {
 101         struct netr_SamInfo3 *info3 = NULL;
 102         NTSTATUS status;
 103
 104         status = copy_netr_SamInfo3(sam3,
 105                                     server_info->info3,
 106                                     &info3);
 107         if (!NT_STATUS_IS_OK(status)) {
 108                 return status;
 109         }
 110
 111         if (server_info->session_key.length) {
 112                 memcpy(info3->base.key.key,
 113                        server_info->session_key.data,
 114                        MIN(sizeof(info3->base.key.key),
 115                            server_info->session_key.length));
 116         }
 117         if (server_info->lm_session_key.length) {
 118                 memcpy(info3->base.LMSessKey.key,
 119                        server_info->lm_session_key.data,
 120                        MIN(sizeof(info3->base.LMSessKey.key),
 121                            server_info->lm_session_key.length));
 122         }
 123
 124         sam3->base = info3->base;
 125
 126         sam3->sidcount          = 0;
 127         sam3->sids              = NULL;
 128
 129         return NT_STATUS_OK;
 130 }
 131
 132 /****************************************************************************
 133  inits a netr_SamInfo6 structure from an auth_serversupplied_info. sam6 must
 134  already be initialized and is used as the talloc parent for its members.
 135 *****************************************************************************/
 136
 137 NTSTATUS serverinfo_to_SamInfo6(struct auth_serversupplied_info *server_info,
 138                                 struct netr_SamInfo6 *sam6)
 139 {
 140         struct pdb_domain_info *dominfo;
 141         struct netr_SamInfo3 *info3 = NULL;
 142         NTSTATUS status;
 143
 144         if ((pdb_capabilities() & PDB_CAP_ADS) == 0) {
 145                 DEBUG(10,("Not adding validation info level 6 "
 146                            "without ADS passdb backend\n"));
 147                 return NT_STATUS_INVALID_INFO_CLASS;
 148         }
 149
 150         dominfo = pdb_get_domain_info(sam6);
 151         if (dominfo == NULL) {
 152                 return NT_STATUS_NO_MEMORY;
 153         }
 154
 155         status = copy_netr_SamInfo3(sam6,
 156                                     server_info->info3,
 157                                     &info3);
 158         if (!NT_STATUS_IS_OK(status)) {
 159                 return status;
 160         }
 161
 162         if (server_info->session_key.length) {
 163                 memcpy(info3->base.key.key,
 164                        server_info->session_key.data,
 165                        MIN(sizeof(info3->base.key.key),
 166                            server_info->session_key.length));
 167         }
 168         if (server_info->lm_session_key.length) {
 169                 memcpy(info3->base.LMSessKey.key,
 170                        server_info->lm_session_key.data,
 171                        MIN(sizeof(info3->base.LMSessKey.key),
 172                            server_info->lm_session_key.length));
 173         }
 174
 175         sam6->base = info3->base;
 176
 177         sam6->sidcount          = 0;
 178         sam6->sids              = NULL;
 179
 180         sam6->dns_domainname.string = talloc_strdup(sam6, dominfo->dns_domain);
 181         if (sam6->dns_domainname.string == NULL) {
 182                 return NT_STATUS_NO_MEMORY;
 183         }
 184
 185         sam6->principal_name.string = talloc_asprintf(
 186                 sam6, "%s@%s", sam6->base.account_name.string,
 187                 sam6->dns_domainname.string);
 188         if (sam6->principal_name.string == NULL) {
 189                 return NT_STATUS_NO_MEMORY;
 190         }
 191
 192         return NT_STATUS_OK;
 193 }
 194
 195 static NTSTATUS append_netr_SidAttr(TALLOC_CTX *mem_ctx,
 196                                     struct netr_SidAttr **sids,
 197                                     uint32_t *count,
 198                                     const struct dom_sid2 *asid,
 199                                     uint32_t attributes)
 200 {
 201         uint32_t t = *count;
 202
 203         *sids = talloc_realloc(mem_ctx, *sids, struct netr_SidAttr, t + 1);
 204         if (*sids == NULL) {
 205                 return NT_STATUS_NO_MEMORY;
 206         }
 207         (*sids)[t].sid = dom_sid_dup(*sids, asid);
 208         if ((*sids)[t].sid == NULL) {
 209                 return NT_STATUS_NO_MEMORY;
 210         }
 211         (*sids)[t].attributes = attributes;
 212         *count = t + 1;
 213
 214         return NT_STATUS_OK;
 215 }
 216
 217 /* Fills the samr_RidWithAttributeArray with the provided sids.
 218  * If it happens that we have additional groups that do not belong
 219  * to the domain, add their sids as extra sids */
 220 static NTSTATUS group_sids_to_info3(struct netr_SamInfo3 *info3,
 221                                     const struct dom_sid *sids,
 222                                     size_t num_sids)
 223 {
 224         uint32_t attributes = SE_GROUP_MANDATORY |
 225                                 SE_GROUP_ENABLED_BY_DEFAULT |
 226                                 SE_GROUP_ENABLED;
 227         struct samr_RidWithAttributeArray *groups;
 228         struct dom_sid *domain_sid;
 229         unsigned int i;
 230         NTSTATUS status;
 231         uint32_t rid;
 232         bool ok;
 233
 234         domain_sid = info3->base.domain_sid;
 235         groups = &info3->base.groups;
 236
 237         groups->rids = talloc_array(info3,
 238                                     struct samr_RidWithAttribute, num_sids);
 239         if (!groups->rids) {
 240                 return NT_STATUS_NO_MEMORY;
 241         }
 242
 243         for (i = 0; i < num_sids; i++) {
 244                 ok = sid_peek_check_rid(domain_sid, &sids[i], &rid);
 245                 if (ok) {
 246                         /* store domain group rid */
 247                         groups->rids[groups->count].rid = rid;
 248                         groups->rids[groups->count].attributes = attributes;
 249                         groups->count++;
 250                         continue;
 251                 }
 252
 253                 /* if this wasn't a domain sid, add it as extra sid */
 254                 status = append_netr_SidAttr(info3, &info3->sids,
 255                                              &info3->sidcount,
 256                                              &sids[i], attributes);
 257                 if (!NT_STATUS_IS_OK(status)) {
 258                         return status;
 259                 }
 260         }
 261
 262         return NT_STATUS_OK;
 263 }
 264
 265 /*
 266  * Merge resource SIDs, if any, into the passed in info3 structure.
 267  */
 268
 269 static NTSTATUS merge_resource_sids(const struct PAC_LOGON_INFO *logon_info,
 270                                 struct netr_SamInfo3 *info3)
 271 {
 272         uint32_t i = 0;
 273         const struct PAC_DOMAIN_GROUP_MEMBERSHIP *rg = NULL;
 274
 275         if (logon_info->info3.base.user_flags & NETLOGON_RESOURCE_GROUPS) {
 276                 rg = &logon_info->resource_groups;
 277         }
 278
 279         if (rg == NULL) {
 280                 return NT_STATUS_OK;
 281         }
 282
 283         if (rg->domain_sid == NULL) {
 284                 DEBUG(10, ("Missing Resource Group Domain SID\n"));
 285                 return NT_STATUS_INVALID_PARAMETER;
 286         }
 287
 288         /* The IDL layer would be a better place to check this, but to
 289          * guard the integer addition below, we double-check */
 290         if (rg->groups.count > 65535) {
 291                 DEBUG(10, ("Too much Resource Group RIDs %u\n",
 292                           (unsigned)rg->groups.count));
 293                 return NT_STATUS_INVALID_PARAMETER;
 294         }
 295
 296         /*
 297          * If there are any resource groups (SID Compression) add
 298          * them to the extra sids portion of the info3 in the PAC.
 299          *
 300          * This makes the info3 look like it would if we got the info
 301          * from the DC rather than the PAC.
 302          */
 303
 304         /*
 305          * Construct a SID for each RID in the list and then append it
 306          * to the info3.
 307          */
 308         for (i = 0; i < rg->groups.count; i++) {
 309                 NTSTATUS status;
 310                 struct dom_sid new_sid;
 311                 uint32_t attributes = rg->groups.rids[i].attributes;
 312                 struct dom_sid_buf buf;
 313
 314                 sid_compose(&new_sid,
 315                             rg->domain_sid,
 316                             rg->groups.rids[i].rid);
 317
 318                 DEBUG(10, ("Adding SID %s to extra SIDS\n",
 319                            dom_sid_str_buf(&new_sid, &buf)));
 320
 321                 status = append_netr_SidAttr(info3, &info3->sids,
 322                                         &info3->sidcount,
 323                                         &new_sid,
 324                                         attributes);
 325                 if (!NT_STATUS_IS_OK(status)) {
 326                         DEBUG(1, ("failed to append SID %s to extra SIDS: %s\n",
 327                                 dom_sid_str_buf(&new_sid, &buf),
 328                                 nt_errstr(status)));
 329                         return status;
 330                 }
 331         }
 332
 333         return NT_STATUS_OK;
 334 }
 335
 336 /*
 337  * Create a copy of an info3 struct from the struct PAC_LOGON_INFO,
 338  * then merge resource SIDs, if any, into it. If successful return
 339  * the created info3 struct.
 340  */
 341
 342 NTSTATUS create_info3_from_pac_logon_info(TALLOC_CTX *mem_ctx,
 343                                         const struct PAC_LOGON_INFO *logon_info,
 344                                         struct netr_SamInfo3 **pp_info3)
 345 {
 346         NTSTATUS status;
 347         struct netr_SamInfo3 *info3 = NULL;
 348
 349         status = copy_netr_SamInfo3(mem_ctx,
 350                                     &logon_info->info3,
 351                                     &info3);
 352         if (!NT_STATUS_IS_OK(status)) {
 353                 return status;
 354         }
 355
 356         status = merge_resource_sids(logon_info, info3);
 357         if (!NT_STATUS_IS_OK(status)) {
 358                 TALLOC_FREE(info3);
 359                 return status;
 360         }
 361         *pp_info3 = info3;
 362         return NT_STATUS_OK;
 363 }
 364
 365 /*
 366  * Create a copy of an info6 struct from the PAC_UPN_DNS_INFO and PAC_LOGON_INFO
 367  * then merge resource SIDs, if any, into it. If successful return the created
 368  * info6 struct.
 369  */
 370 NTSTATUS create_info6_from_pac(TALLOC_CTX *mem_ctx,
 371                                const struct PAC_LOGON_INFO *logon_info,
 372                                const struct PAC_UPN_DNS_INFO *upn_dns_info,
 373                                struct netr_SamInfo6 **pp_info6)
 374 {
 375         NTSTATUS status;
 376         struct netr_SamInfo6 *info6 = NULL;
 377         struct netr_SamInfo3 *info3 = NULL;
 378
 379         info6 = talloc_zero(mem_ctx, struct netr_SamInfo6);
 380         if (info6 == NULL) {
 381                 return NT_STATUS_NO_MEMORY;
 382         }
 383
 384         status = copy_netr_SamInfo3(info6,
 385                                     &logon_info->info3,
 386                                     &info3);
 387         if (!NT_STATUS_IS_OK(status)) {
 388                 TALLOC_FREE(info6);
 389                 return status;
 390         }
 391
 392         status = merge_resource_sids(logon_info, info3);
 393         if (!NT_STATUS_IS_OK(status)) {
 394                 TALLOC_FREE(info6);
 395                 return status;
 396         }
 397
 398         info6->base = info3->base;
 399         info6->sids = info3->sids;
 400         info6->sidcount = info3->sidcount;
 401
 402         if (upn_dns_info != NULL) {
 403                 info6->dns_domainname.string = talloc_strdup(info6,
 404                                 upn_dns_info->dns_domain_name);
 405                 if (info6->dns_domainname.string == NULL) {
 406                         TALLOC_FREE(info6);
 407                         return NT_STATUS_NO_MEMORY;
 408                 }
 409                 info6->principal_name.string = talloc_strdup(info6,
 410                                 upn_dns_info->upn_name);
 411                 if (info6->principal_name.string == NULL) {
 412                         TALLOC_FREE(info6);
 413                         return NT_STATUS_NO_MEMORY;
 414                 }
 415         }
 416
 417         *pp_info6 = info6;
 418         return NT_STATUS_OK;
 419 }
 420
 421 /*
 422  * Check if this is a "Unix Users" domain user, or a
 423  * "Unix Groups" domain group, we need to handle it
 424  * in a special way if that's the case.
 425  */
 426
 427 static NTSTATUS SamInfo3_handle_sids(const char *username,
 428                         const struct dom_sid *user_sid,
 429                         const struct dom_sid *group_sid,
 430                         struct netr_SamInfo3 *info3,
 431                         struct dom_sid *domain_sid,
 432                         struct extra_auth_info *extra)
 433 {
 434         struct dom_sid_buf buf;
 435
 436         if (sid_check_is_in_unix_users(user_sid)) {
 437                 /* in info3 you can only set rids for the user and the
 438                  * primary group, and the domain sid must be that of
 439                  * the sam domain.
 440                  *
 441                  * Store a completely bogus value here.
 442                  * The real SID is stored in the extra sids.
 443                  * Other code will know to look there if (-1) is found
 444                  */
 445                 info3->base.rid = (uint32_t)(-1);
 446                 sid_copy(&extra->user_sid, user_sid);
 447
 448                 DEBUG(10, ("Unix User found. Rid marked as "
 449                         "special and sid (%s) saved as extra sid\n",
 450                         dom_sid_str_buf(user_sid, &buf)));
 451         } else {
 452                 sid_copy(domain_sid, user_sid);
 453                 sid_split_rid(domain_sid, &info3->base.rid);
 454         }
 455
 456         if (is_null_sid(domain_sid)) {
 457                 sid_copy(domain_sid, get_global_sam_sid());
 458         }
 459
 460         /* check if this is a "Unix Groups" domain group,
 461          * if so we need special handling */
 462         if (sid_check_is_in_unix_groups(group_sid)) {
 463                 /* in info3 you can only set rids for the user and the
 464                  * primary group, and the domain sid must be that of
 465                  * the sam domain.
 466                  *
 467                  * Store a completely bogus value here.
 468                  * The real SID is stored in the extra sids.
 469                  * Other code will know to look there if (-1) is found
 470                  */
 471                 info3->base.primary_gid = (uint32_t)(-1);
 472                 sid_copy(&extra->pgid_sid, group_sid);
 473
 474                 DEBUG(10, ("Unix Group found. Rid marked as "
 475                         "special and sid (%s) saved as extra sid\n",
 476                         dom_sid_str_buf(group_sid, &buf)));
 477         } else {
 478                 bool ok = sid_peek_check_rid(domain_sid, group_sid,
 479                                         &info3->base.primary_gid);
 480                 if (!ok) {
 481                         struct dom_sid_buf buf2, buf3;
 482                         DEBUG(1, ("The primary group domain sid(%s) does not "
 483                                 "match the domain sid(%s) for %s(%s)\n",
 484                                 dom_sid_str_buf(group_sid, &buf),
 485                                 dom_sid_str_buf(domain_sid, &buf2),
 486                                 username,
 487                                 dom_sid_str_buf(user_sid, &buf3)));
 488                         return NT_STATUS_INVALID_SID;
 489                 }
 490         }
 491         return NT_STATUS_OK;
 492 }
 493
 494 #define RET_NOMEM(ptr) do { \
 495         if (!ptr) { \
 496                 TALLOC_FREE(info3); \
 497                 return NT_STATUS_NO_MEMORY; \
 498         } } while(0)
 499
 500 NTSTATUS samu_to_SamInfo3(TALLOC_CTX *mem_ctx,
 501                           struct samu *samu,
 502                           const char *login_server,
 503                           struct netr_SamInfo3 **_info3,
 504                           struct extra_auth_info *extra)
 505 {
 506         struct netr_SamInfo3 *info3;
 507         const struct dom_sid *user_sid;
 508         const struct dom_sid *group_sid;
 509         struct dom_sid domain_sid = {0};
 510         struct dom_sid *group_sids;
 511         uint32_t num_group_sids = 0;
 512         const char *tmp;
 513         gid_t *gids;
 514         NTSTATUS status;
 515
 516         user_sid = pdb_get_user_sid(samu);
 517         group_sid = pdb_get_group_sid(samu);
 518
 519         if (!user_sid || !group_sid) {
 520                 DEBUG(1, ("Sam account is missing sids!\n"));
 521                 return NT_STATUS_UNSUCCESSFUL;
 522         }
 523
 524         info3 = talloc_zero(mem_ctx, struct netr_SamInfo3);
 525         if (!info3) {
 526                 return NT_STATUS_NO_MEMORY;
 527         }
 528
 529         status = SamInfo3_handle_sids(pdb_get_username(samu),
 530                                 user_sid,
 531                                 group_sid,
 532                                 info3,
 533                                 &domain_sid,
 534                                 extra);
 535
 536         if (!NT_STATUS_IS_OK(status)) {
 537                 TALLOC_FREE(info3);
 538                 return status;
 539         }
 540
 541         unix_to_nt_time(&info3->base.logon_time, pdb_get_logon_time(samu));
 542         unix_to_nt_time(&info3->base.logoff_time, get_time_t_max());
 543         unix_to_nt_time(&info3->base.kickoff_time, get_time_t_max());
 544         unix_to_nt_time(&info3->base.last_password_change,
 545                         pdb_get_pass_last_set_time(samu));
 546         unix_to_nt_time(&info3->base.allow_password_change,
 547                         pdb_get_pass_can_change_time(samu));
 548         unix_to_nt_time(&info3->base.force_password_change,
 549                         pdb_get_pass_must_change_time(samu));
 550
 551         tmp = pdb_get_username(samu);
 552         if (tmp) {
 553                 info3->base.account_name.string = talloc_strdup(info3, tmp);
 554                 RET_NOMEM(info3->base.account_name.string);
 555         }
 556         tmp = pdb_get_fullname(samu);
 557         if (tmp) {
 558                 info3->base.full_name.string = talloc_strdup(info3, tmp);
 559                 RET_NOMEM(info3->base.full_name.string);
 560         }
 561         tmp = pdb_get_logon_script(samu);
 562         if (tmp) {
 563                 info3->base.logon_script.string = talloc_strdup(info3, tmp);
 564                 RET_NOMEM(info3->base.logon_script.string);
 565         }
 566         tmp = pdb_get_profile_path(samu);
 567         if (tmp) {
 568                 info3->base.profile_path.string = talloc_strdup(info3, tmp);
 569                 RET_NOMEM(info3->base.profile_path.string);
 570         }
 571         tmp = pdb_get_homedir(samu);
 572         if (tmp) {
 573                 info3->base.home_directory.string = talloc_strdup(info3, tmp);
 574                 RET_NOMEM(info3->base.home_directory.string);
 575         }
 576         tmp = pdb_get_dir_drive(samu);
 577         if (tmp) {
 578                 info3->base.home_drive.string = talloc_strdup(info3, tmp);
 579                 RET_NOMEM(info3->base.home_drive.string);
 580         }
 581
 582         info3->base.logon_count = pdb_get_logon_count(samu);
 583         info3->base.bad_password_count = pdb_get_bad_password_count(samu);
 584
 585         info3->base.logon_domain.string = talloc_strdup(info3,
 586                                                   pdb_get_domain(samu));
 587         RET_NOMEM(info3->base.logon_domain.string);
 588
 589         info3->base.domain_sid = dom_sid_dup(info3, &domain_sid);
 590         RET_NOMEM(info3->base.domain_sid);
 591
 592         status = pdb_enum_group_memberships(mem_ctx, samu,
 593                                             &group_sids, &gids,
 594                                             &num_group_sids);
 595         if (!NT_STATUS_IS_OK(status)) {
 596                 DEBUG(1, ("Failed to get groups from sam account.\n"));
 597                 TALLOC_FREE(info3);
 598                 return status;
 599         }
 600
 601         if (num_group_sids) {
 602                 status = group_sids_to_info3(info3, group_sids, num_group_sids);
 603                 if (!NT_STATUS_IS_OK(status)) {
 604                         TALLOC_FREE(info3);
 605                         return status;
 606                 }
 607         }
 608
 609         /* We don't need sids and gids after the conversion */
 610         TALLOC_FREE(group_sids);
 611         TALLOC_FREE(gids);
 612         num_group_sids = 0;
 613
 614         /* FIXME: should we add other flags ? */
 615         info3->base.user_flags = NETLOGON_EXTRA_SIDS;
 616
 617         if (login_server) {
 618                 info3->base.logon_server.string = talloc_strdup(info3, login_server);
 619                 RET_NOMEM(info3->base.logon_server.string);
 620         }
 621
 622         info3->base.acct_flags = pdb_get_acct_ctrl(samu);
 623
 624         *_info3 = info3;
 625         return NT_STATUS_OK;
 626 }
 627
 628 NTSTATUS passwd_to_SamInfo3(TALLOC_CTX *mem_ctx,
 629                             const char *unix_username,
 630                             const struct passwd *pwd,
 631                             struct netr_SamInfo3 **pinfo3,
 632                             struct extra_auth_info *extra)
 633 {
 634         struct netr_SamInfo3 *info3;
 635         NTSTATUS status;
 636         TALLOC_CTX *tmp_ctx;
 637         const char *domain_name = NULL;
 638         const char *user_name = NULL;
 639         struct dom_sid domain_sid;
 640         struct dom_sid user_sid;
 641         struct dom_sid group_sid;
 642         enum lsa_SidType type;
 643         uint32_t num_sids = 0;
 644         struct dom_sid *user_sids = NULL;
 645         bool is_null;
 646         bool ok;
 647
 648         tmp_ctx = talloc_stackframe();
 649
 650         ok = lookup_name_smbconf(tmp_ctx,
 651                                  unix_username,
 652                                  LOOKUP_NAME_ALL,
 653                                  &domain_name,
 654                                  &user_name,
 655                                  &user_sid,
 656                                  &type);
 657         if (!ok) {
 658                 status = NT_STATUS_NO_SUCH_USER;
 659                 goto done;
 660         }
 661
 662         if (type != SID_NAME_USER) {
 663                 status = NT_STATUS_NO_SUCH_USER;
 664                 goto done;
 665         }
 666
 667         ok = winbind_lookup_usersids(tmp_ctx,
 668                                      &user_sid,
 669                                      &num_sids,
 670                                      &user_sids);
 671         /* Check if winbind is running */
 672         if (ok) {
 673                 /*
 674                  * Winbind is running and the first element of the user_sids
 675                  * is the primary group.
 676                  */
 677                 if (num_sids > 0) {
 678                         group_sid = user_sids[0];
 679                 }
 680         } else {
 681                 /*
 682                  * Winbind is not running, try to create the group_sid from the
 683                  * passwd group id.
 684                  */
 685
 686                 /*
 687                  * This can lead to a primary group of S-1-22-2-XX which
 688                  * will be rejected by other Samba code.
 689                  */
 690                 gid_to_sid(&group_sid, pwd->pw_gid);
 691         }
 692
 693         /*
 694          * If we are a unix group, or a wellknown/builtin alias,
 695          * set the group_sid to the
 696          * 'Domain Users' RID of 513 which will always resolve to a
 697          * name.
 698          */
 699         if (sid_check_is_in_unix_groups(&group_sid) ||
 700             sid_check_is_in_builtin(&group_sid) ||
 701             sid_check_is_in_wellknown_domain(&group_sid)) {
 702                 if (sid_check_is_in_unix_users(&user_sid)) {
 703                         sid_compose(&group_sid,
 704                                     get_global_sam_sid(),
 705                                     DOMAIN_RID_USERS);
 706                 } else {
 707                         sid_copy(&domain_sid, &user_sid);
 708                         sid_split_rid(&domain_sid, NULL);
 709                         sid_compose(&group_sid,
 710                                     &domain_sid,
 711                                     DOMAIN_RID_USERS);
 712                 }
 713         }
 714
 715         /* Make sure we have a valid group sid */
 716         is_null = is_null_sid(&group_sid);
 717         if (is_null) {
 718                 status = NT_STATUS_NO_SUCH_USER;
 719                 goto done;
 720         }
 721
 722         /* Construct a netr_SamInfo3 from the information we have */
 723         info3 = talloc_zero(tmp_ctx, struct netr_SamInfo3);
 724         if (!info3) {
 725                 status = NT_STATUS_NO_MEMORY;
 726                 goto done;
 727         }
 728
 729         info3->base.account_name.string = talloc_strdup(info3, unix_username);
 730         if (info3->base.account_name.string == NULL) {
 731                 status = NT_STATUS_NO_MEMORY;
 732                 goto done;
 733         }
 734
 735         ZERO_STRUCT(domain_sid);
 736
 737         status = SamInfo3_handle_sids(unix_username,
 738                                 &user_sid,
 739                                 &group_sid,
 740                                 info3,
 741                                 &domain_sid,
 742                                 extra);
 743
 744         if (!NT_STATUS_IS_OK(status)) {
 745                 goto done;
 746         }
 747
 748         info3->base.domain_sid = dom_sid_dup(info3, &domain_sid);
 749         if (info3->base.domain_sid == NULL) {
 750                 status = NT_STATUS_NO_MEMORY;
 751                 goto done;
 752         }
 753
 754         ok = sid_peek_check_rid(&domain_sid, &group_sid,
 755                                 &info3->base.primary_gid);
 756         if (!ok) {
 757                 struct dom_sid_buf buf1, buf2, buf3;
 758
 759                 DEBUG(1, ("The primary group domain sid(%s) does not "
 760                           "match the domain sid(%s) for %s(%s)\n",
 761                           dom_sid_str_buf(&group_sid, &buf1),
 762                           dom_sid_str_buf(&domain_sid, &buf2),
 763                           unix_username,
 764                           dom_sid_str_buf(&user_sid, &buf3)));
 765                 status = NT_STATUS_INVALID_SID;
 766                 goto done;
 767         }
 768
 769         info3->base.acct_flags = ACB_NORMAL;
 770
 771         if (num_sids) {
 772                 status = group_sids_to_info3(info3, user_sids, num_sids);
 773                 if (!NT_STATUS_IS_OK(status)) {
 774                         goto done;
 775                 }
 776         }
 777
 778         *pinfo3 = talloc_steal(mem_ctx, info3);
 779
 780         status = NT_STATUS_OK;
 781 done:
 782         talloc_free(tmp_ctx);
 783
 784         return status;
 785 }