source3/winbindd/winbindd_samr.c

   1 /*
   2  * Unix SMB/CIFS implementation.
   3  *
   4  * Winbind rpc backend functions
   5  *
   6  * Copyright (c) 2000-2003 Tim Potter
   7  * Copyright (c) 2001      Andrew Tridgell
   8  * Copyright (c) 2005      Volker Lendecke
   9  * Copyright (c) 2008      Guenther Deschner (pidl conversion)
  10  * Copyright (c) 2010      Andreas Schneider <asn@samba.org>
  11  *
  12  * This program is free software; you can redistribute it and/or modify
  13  * it under the terms of the GNU General Public License as published by
  14  * the Free Software Foundation; either version 3 of the License, or
  15  * (at your option) any later version.
  16  *
  17  * This program is distributed in the hope that it will be useful,
  18  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  19  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  20  * GNU General Public License for more details.
  21  *
  22  * You should have received a copy of the GNU General Public License
  23  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  24  */
  25
  26 #include "includes.h"
  27 #include "winbindd.h"
  28 #include "winbindd_rpc.h"
  29 #include "lib/util_unixsids.h"
  30 #include "rpc_client/rpc_client.h"
  31 #include "rpc_client/cli_pipe.h"
  32 #include "../librpc/gen_ndr/ndr_samr_c.h"
  33 #include "rpc_client/cli_samr.h"
  34 #include "../librpc/gen_ndr/ndr_lsa_c.h"
  35 #include "rpc_client/cli_lsarpc.h"
  36 #include "rpc_server/rpc_ncacn_np.h"
  37 #include "../libcli/security/security.h"
  38 #include "passdb/machine_sid.h"
  39 #include "auth.h"
  40
  41 #undef DBGC_CLASS
  42 #define DBGC_CLASS DBGC_WINBIND
  43
  44 /*
  45  * The other end of this won't go away easily, so we can trust it
  46  *
  47  * It is either a long-lived process with the same lifetime as
  48  * winbindd or a part of this process
  49  */
  50 struct winbind_internal_pipes {
  51         struct rpc_pipe_client *samr_pipe;
  52         struct policy_handle samr_domain_hnd;
  53         struct rpc_pipe_client *lsa_pipe;
  54         struct policy_handle lsa_hnd;
  55 };
  56
  57
  58 NTSTATUS open_internal_samr_conn(TALLOC_CTX *mem_ctx,
  59                                  struct winbindd_domain *domain,
  60                                  struct rpc_pipe_client **samr_pipe,
  61                                  struct policy_handle *samr_domain_hnd)
  62 {
  63         NTSTATUS status, result;
  64         struct policy_handle samr_connect_hnd;
  65         struct dcerpc_binding_handle *b;
  66
  67         status = wb_open_internal_pipe(mem_ctx, &ndr_table_samr, samr_pipe);
  68         if (!NT_STATUS_IS_OK(status)) {
  69                 return status;
  70         }
  71
  72         b = (*samr_pipe)->binding_handle;
  73
  74         status = dcerpc_samr_Connect2(b, mem_ctx,
  75                                       (*samr_pipe)->desthost,
  76                                       SEC_FLAG_MAXIMUM_ALLOWED,
  77                                       &samr_connect_hnd,
  78                                       &result);
  79         if (!NT_STATUS_IS_OK(status)) {
  80                 return status;
  81         }
  82         if (!NT_STATUS_IS_OK(result)) {
  83                 return result;
  84         }
  85
  86         status = dcerpc_samr_OpenDomain(b, mem_ctx,
  87                                         &samr_connect_hnd,
  88                                         SEC_FLAG_MAXIMUM_ALLOWED,
  89                                         &domain->sid,
  90                                         samr_domain_hnd,
  91                                         &result);
  92         if (!NT_STATUS_IS_OK(status)) {
  93                 return status;
  94         }
  95
  96         return result;
  97 }
  98
  99 NTSTATUS open_internal_lsa_conn(TALLOC_CTX *mem_ctx,
 100                                 struct rpc_pipe_client **lsa_pipe,
 101                                 struct policy_handle *lsa_hnd)
 102 {
 103         NTSTATUS status;
 104
 105         status = wb_open_internal_pipe(mem_ctx, &ndr_table_lsarpc, lsa_pipe);
 106         if (!NT_STATUS_IS_OK(status)) {
 107                 return status;
 108         }
 109
 110         status = rpccli_lsa_open_policy((*lsa_pipe),
 111                                         mem_ctx,
 112                                         true,
 113                                         SEC_FLAG_MAXIMUM_ALLOWED,
 114                                         lsa_hnd);
 115
 116         return status;
 117 }
 118
 119
 120 static NTSTATUS open_cached_internal_pipe_conn(
 121         struct winbindd_domain *domain,
 122         struct rpc_pipe_client **samr_pipe,
 123         struct policy_handle *samr_domain_hnd,
 124         struct rpc_pipe_client **lsa_pipe,
 125         struct policy_handle *lsa_hnd)
 126 {
 127         struct winbind_internal_pipes *internal_pipes = NULL;
 128
 129         if (domain->private_data == NULL) {
 130                 TALLOC_CTX *frame = talloc_stackframe();
 131                 NTSTATUS status;
 132
 133                 internal_pipes = talloc_zero(frame,
 134                                              struct winbind_internal_pipes);
 135
 136                 status = open_internal_samr_conn(
 137                         internal_pipes,
 138                         domain,
 139                         &internal_pipes->samr_pipe,
 140                         &internal_pipes->samr_domain_hnd);
 141                 if (!NT_STATUS_IS_OK(status)) {
 142                         TALLOC_FREE(frame);
 143                         return status;
 144                 }
 145
 146                 status = open_internal_lsa_conn(internal_pipes,
 147                                                 &internal_pipes->lsa_pipe,
 148                                                 &internal_pipes->lsa_hnd);
 149
 150                 if (!NT_STATUS_IS_OK(status)) {
 151                         TALLOC_FREE(frame);
 152                         return status;
 153                 }
 154
 155                 domain->private_data = talloc_move(domain, &internal_pipes);
 156
 157                 TALLOC_FREE(frame);
 158
 159         }
 160
 161         internal_pipes = talloc_get_type_abort(
 162                 domain->private_data, struct winbind_internal_pipes);
 163
 164         if (samr_domain_hnd) {
 165                 *samr_domain_hnd = internal_pipes->samr_domain_hnd;
 166         }
 167
 168         if (samr_pipe) {
 169                 *samr_pipe = internal_pipes->samr_pipe;
 170         }
 171
 172         if (lsa_hnd) {
 173                 *lsa_hnd = internal_pipes->lsa_hnd;
 174         }
 175
 176         if (lsa_pipe) {
 177                 *lsa_pipe = internal_pipes->lsa_pipe;
 178         }
 179
 180         return NT_STATUS_OK;
 181 }
 182
 183 static bool reset_connection_on_error(struct winbindd_domain *domain,
 184                                       struct rpc_pipe_client *p,
 185                                       NTSTATUS status)
 186 {
 187         struct winbind_internal_pipes *internal_pipes = NULL;
 188
 189         internal_pipes = talloc_get_type_abort(
 190                 domain->private_data, struct winbind_internal_pipes);
 191
 192         if (NT_STATUS_EQUAL(status, NT_STATUS_IO_TIMEOUT) ||
 193             NT_STATUS_EQUAL(status, NT_STATUS_IO_DEVICE_ERROR))
 194         {
 195                 TALLOC_FREE(internal_pipes);
 196                 domain->private_data = NULL;
 197                 return true;
 198         }
 199
 200         if (!rpccli_is_connected(p)) {
 201                 TALLOC_FREE(internal_pipes);
 202                 domain->private_data = NULL;
 203                 return true;
 204         }
 205
 206         return false;
 207 }
 208
 209 /*********************************************************************
 210  SAM specific functions.
 211 *********************************************************************/
 212
 213 /* List all domain groups */
 214 static NTSTATUS sam_enum_dom_groups(struct winbindd_domain *domain,
 215                                     TALLOC_CTX *mem_ctx,
 216                                     uint32_t *pnum_info,
 217                                     struct wb_acct_info **pinfo)
 218 {
 219         struct rpc_pipe_client *samr_pipe;
 220         struct policy_handle dom_pol = { 0 };
 221         struct wb_acct_info *info = NULL;
 222         uint32_t num_info = 0;
 223         TALLOC_CTX *tmp_ctx;
 224         NTSTATUS status;
 225         bool retry = false;
 226
 227         DEBUG(3,("sam_enum_dom_groups\n"));
 228
 229         if (pnum_info) {
 230                 *pnum_info = 0;
 231         }
 232
 233         tmp_ctx = talloc_stackframe();
 234         if (tmp_ctx == NULL) {
 235                 return NT_STATUS_NO_MEMORY;
 236         }
 237
 238 again:
 239         status = open_cached_internal_pipe_conn(domain,
 240                                                 &samr_pipe,
 241                                                 &dom_pol,
 242                                                 NULL,
 243                                                 NULL);
 244         if (!NT_STATUS_IS_OK(status)) {
 245                 TALLOC_FREE(tmp_ctx);
 246                 return status;
 247         }
 248
 249         status = rpc_enum_dom_groups(tmp_ctx,
 250                                      samr_pipe,
 251                                      &dom_pol,
 252                                      &num_info,
 253                                      &info);
 254
 255         if (!retry && reset_connection_on_error(domain, samr_pipe, status)) {
 256                 retry = true;
 257                 goto again;
 258         }
 259
 260         if (!NT_STATUS_IS_OK(status)) {
 261                 TALLOC_FREE(tmp_ctx);
 262                 return status;
 263         }
 264
 265         if (pnum_info) {
 266                 *pnum_info = num_info;
 267         }
 268
 269         if (pinfo) {
 270                 *pinfo = talloc_move(mem_ctx, &info);
 271         }
 272
 273         TALLOC_FREE(tmp_ctx);
 274         return status;
 275 }
 276
 277 /* Query display info for a domain */
 278 static NTSTATUS sam_query_user_list(struct winbindd_domain *domain,
 279                                     TALLOC_CTX *mem_ctx,
 280                                     uint32_t **prids)
 281 {
 282         struct rpc_pipe_client *samr_pipe = NULL;
 283         struct policy_handle dom_pol = { 0 };
 284         uint32_t *rids = NULL;
 285         TALLOC_CTX *tmp_ctx;
 286         NTSTATUS status;
 287         bool retry = false;
 288
 289         DEBUG(3,("samr_query_user_list\n"));
 290
 291         tmp_ctx = talloc_stackframe();
 292         if (tmp_ctx == NULL) {
 293                 return NT_STATUS_NO_MEMORY;
 294         }
 295
 296 again:
 297         status = open_cached_internal_pipe_conn(domain,
 298                                                 &samr_pipe,
 299                                                 &dom_pol,
 300                                                 NULL,
 301                                                 NULL);
 302         if (!NT_STATUS_IS_OK(status)) {
 303                 goto done;
 304         }
 305
 306         status = rpc_query_user_list(tmp_ctx,
 307                                      samr_pipe,
 308                                      &dom_pol,
 309                                      &domain->sid,
 310                                      &rids);
 311         if (!retry && reset_connection_on_error(domain, samr_pipe, status)) {
 312                 retry = true;
 313                 goto again;
 314         }
 315
 316         if (!NT_STATUS_IS_OK(status)) {
 317                 goto done;
 318         }
 319
 320         if (prids != NULL) {
 321                 *prids = talloc_move(mem_ctx, &rids);
 322         }
 323
 324 done:
 325         TALLOC_FREE(rids);
 326         TALLOC_FREE(tmp_ctx);
 327         return status;
 328 }
 329
 330 /* get a list of trusted domains - builtin domain */
 331 static NTSTATUS sam_trusted_domains(struct winbindd_domain *domain,
 332                                     TALLOC_CTX *mem_ctx,
 333                                     struct netr_DomainTrustList *ptrust_list)
 334 {
 335         struct rpc_pipe_client *lsa_pipe;
 336         struct policy_handle lsa_policy = { 0 };
 337         struct netr_DomainTrust *trusts = NULL;
 338         uint32_t num_trusts = 0;
 339         TALLOC_CTX *tmp_ctx;
 340         NTSTATUS status;
 341         bool retry = false;
 342
 343         DEBUG(3,("samr: trusted domains\n"));
 344
 345         if (ptrust_list) {
 346                 ZERO_STRUCTP(ptrust_list);
 347         }
 348
 349         tmp_ctx = talloc_stackframe();
 350         if (tmp_ctx == NULL) {
 351                 return NT_STATUS_NO_MEMORY;
 352         }
 353
 354 again:
 355         status = open_cached_internal_pipe_conn(domain,
 356                                                 NULL,
 357                                                 NULL,
 358                                                 &lsa_pipe,
 359                                                 &lsa_policy);
 360         if (!NT_STATUS_IS_OK(status)) {
 361                 goto done;
 362         }
 363
 364         status = rpc_trusted_domains(tmp_ctx,
 365                                      lsa_pipe,
 366                                      &lsa_policy,
 367                                      &num_trusts,
 368                                      &trusts);
 369
 370         if (!retry && reset_connection_on_error(domain, lsa_pipe, status)) {
 371                 retry = true;
 372                 goto again;
 373         }
 374
 375         if (!NT_STATUS_IS_OK(status)) {
 376                 goto done;
 377         }
 378
 379         if (ptrust_list) {
 380                 ptrust_list->count = num_trusts;
 381                 ptrust_list->array = talloc_move(mem_ctx, &trusts);
 382         }
 383
 384 done:
 385         TALLOC_FREE(tmp_ctx);
 386         return status;
 387 }
 388
 389 /* Lookup group membership given a rid.   */
 390 static NTSTATUS sam_lookup_groupmem(struct winbindd_domain *domain,
 391                                     TALLOC_CTX *mem_ctx,
 392                                     const struct dom_sid *group_sid,
 393                                     enum lsa_SidType type,
 394                                     uint32_t *pnum_names,
 395                                     struct dom_sid **psid_mem,
 396                                     char ***pnames,
 397                                     uint32_t **pname_types)
 398 {
 399         struct rpc_pipe_client *samr_pipe;
 400         struct policy_handle dom_pol = { 0 };
 401
 402         uint32_t num_names = 0;
 403         struct dom_sid *sid_mem = NULL;
 404         char **names = NULL;
 405         uint32_t *name_types = NULL;
 406
 407         TALLOC_CTX *tmp_ctx;
 408         NTSTATUS status;
 409         bool retry = false;
 410
 411         DEBUG(3,("sam_lookup_groupmem\n"));
 412
 413         /* Paranoia check */
 414         if (sid_check_is_in_builtin(group_sid) && (type != SID_NAME_ALIAS)) {
 415                 /* There's no groups, only aliases in BUILTIN */
 416                 return NT_STATUS_NO_SUCH_GROUP;
 417         }
 418
 419         if (pnum_names) {
 420                 *pnum_names = 0;
 421         }
 422
 423         tmp_ctx = talloc_stackframe();
 424         if (tmp_ctx == NULL) {
 425                 return NT_STATUS_NO_MEMORY;
 426         }
 427
 428 again:
 429         status = open_cached_internal_pipe_conn(domain,
 430                                                 &samr_pipe,
 431                                                 &dom_pol,
 432                                                 NULL,
 433                                                 NULL);
 434         if (!NT_STATUS_IS_OK(status)) {
 435                 goto done;
 436         }
 437
 438         status = rpc_lookup_groupmem(tmp_ctx,
 439                                      samr_pipe,
 440                                      &dom_pol,
 441                                      domain->name,
 442                                      &domain->sid,
 443                                      group_sid,
 444                                      type,
 445                                      &num_names,
 446                                      &sid_mem,
 447                                      &names,
 448                                      &name_types);
 449
 450         if (!retry && reset_connection_on_error(domain, samr_pipe, status)) {
 451                 retry = true;
 452                 goto again;
 453         }
 454
 455         if (pnum_names) {
 456                 *pnum_names = num_names;
 457         }
 458
 459         if (pnames) {
 460                 *pnames = talloc_move(mem_ctx, &names);
 461         }
 462
 463         if (pname_types) {
 464                 *pname_types = talloc_move(mem_ctx, &name_types);
 465         }
 466
 467         if (psid_mem) {
 468                 *psid_mem = talloc_move(mem_ctx, &sid_mem);
 469         }
 470
 471 done:
 472         TALLOC_FREE(tmp_ctx);
 473         return status;
 474 }
 475
 476 /*********************************************************************
 477  BUILTIN specific functions.
 478 *********************************************************************/
 479
 480 /* List all domain groups */
 481 static NTSTATUS builtin_enum_dom_groups(struct winbindd_domain *domain,
 482                                 TALLOC_CTX *mem_ctx,
 483                                 uint32_t *num_entries,
 484                                 struct wb_acct_info **info)
 485 {
 486         /* BUILTIN doesn't have domain groups */
 487         *num_entries = 0;
 488         *info = NULL;
 489         return NT_STATUS_OK;
 490 }
 491
 492 /* Query display info for a domain */
 493 static NTSTATUS builtin_query_user_list(struct winbindd_domain *domain,
 494                                 TALLOC_CTX *mem_ctx,
 495                                 uint32_t **rids)
 496 {
 497         /* We don't have users */
 498         *rids = NULL;
 499         return NT_STATUS_OK;
 500 }
 501
 502 /* get a list of trusted domains - builtin domain */
 503 static NTSTATUS builtin_trusted_domains(struct winbindd_domain *domain,
 504                                         TALLOC_CTX *mem_ctx,
 505                                         struct netr_DomainTrustList *trusts)
 506 {
 507         ZERO_STRUCTP(trusts);
 508         return NT_STATUS_OK;
 509 }
 510
 511 /*********************************************************************
 512  COMMON functions.
 513 *********************************************************************/
 514
 515 /* List all local groups (aliases) */
 516 static NTSTATUS sam_enum_local_groups(struct winbindd_domain *domain,
 517                                       TALLOC_CTX *mem_ctx,
 518                                       uint32_t *pnum_info,
 519                                       struct wb_acct_info **pinfo)
 520 {
 521         struct rpc_pipe_client *samr_pipe;
 522         struct policy_handle dom_pol = { 0 };
 523         struct wb_acct_info *info = NULL;
 524         uint32_t num_info = 0;
 525         TALLOC_CTX *tmp_ctx;
 526         NTSTATUS status;
 527         bool retry = false;
 528
 529         DEBUG(3,("samr: enum local groups\n"));
 530
 531         if (pnum_info) {
 532                 *pnum_info = 0;
 533         }
 534
 535         tmp_ctx = talloc_stackframe();
 536         if (tmp_ctx == NULL) {
 537                 return NT_STATUS_NO_MEMORY;
 538         }
 539
 540 again:
 541         status = open_cached_internal_pipe_conn(domain,
 542                                                 &samr_pipe,
 543                                                 &dom_pol,
 544                                                 NULL,
 545                                                 NULL);
 546         if (!NT_STATUS_IS_OK(status)) {
 547                 goto done;
 548         }
 549
 550         status = rpc_enum_local_groups(mem_ctx,
 551                                        samr_pipe,
 552                                        &dom_pol,
 553                                        &num_info,
 554
 555                                        &info);
 556         if (!retry && reset_connection_on_error(domain, samr_pipe, status)) {
 557                 retry = true;
 558                 goto again;
 559         }
 560
 561         if (!NT_STATUS_IS_OK(status)) {
 562                 goto done;
 563         }
 564
 565         if (pnum_info) {
 566                 *pnum_info = num_info;
 567         }
 568
 569         if (pinfo) {
 570                 *pinfo = talloc_move(mem_ctx, &info);
 571         }
 572
 573 done:
 574         TALLOC_FREE(tmp_ctx);
 575         return status;
 576 }
 577
 578 /* convert a single name to a sid in a domain */
 579 static NTSTATUS sam_name_to_sid(struct winbindd_domain *domain,
 580                                    TALLOC_CTX *mem_ctx,
 581                                    const char *domain_name,
 582                                    const char *name,
 583                                    uint32_t flags,
 584                                    struct dom_sid *psid,
 585                                    enum lsa_SidType *ptype)
 586 {
 587         struct rpc_pipe_client *lsa_pipe;
 588         struct policy_handle lsa_policy = { 0 };
 589         struct dom_sid sid;
 590         enum lsa_SidType type;
 591         TALLOC_CTX *tmp_ctx;
 592         NTSTATUS status;
 593         bool retry = false;
 594
 595         DEBUG(3,("sam_name_to_sid\n"));
 596
 597         tmp_ctx = talloc_stackframe();
 598         if (tmp_ctx == NULL) {
 599                 return NT_STATUS_NO_MEMORY;
 600         }
 601
 602 again:
 603         status = open_cached_internal_pipe_conn(domain,
 604                                                 NULL,
 605                                                 NULL,
 606                                                 &lsa_pipe,
 607                                                 &lsa_policy);
 608         if (!NT_STATUS_IS_OK(status)) {
 609                 goto done;
 610         }
 611
 612         status = rpc_name_to_sid(tmp_ctx,
 613                                  lsa_pipe,
 614                                  &lsa_policy,
 615                                  domain_name,
 616                                  name,
 617                                  flags,
 618                                  &sid,
 619                                  &type);
 620
 621         if (!retry && reset_connection_on_error(domain, lsa_pipe, status)) {
 622                 retry = true;
 623                 goto again;
 624         }
 625
 626         if (!NT_STATUS_IS_OK(status)) {
 627                 goto done;
 628         }
 629
 630         if (psid) {
 631                 sid_copy(psid, &sid);
 632         }
 633         if (ptype) {
 634                 *ptype = type;
 635         }
 636
 637 done:
 638         TALLOC_FREE(tmp_ctx);
 639         return status;
 640 }
 641
 642 /* convert a domain SID to a user or group name */
 643 static NTSTATUS sam_sid_to_name(struct winbindd_domain *domain,
 644                                 TALLOC_CTX *mem_ctx,
 645                                 const struct dom_sid *sid,
 646                                 char **pdomain_name,
 647                                 char **pname,
 648                                 enum lsa_SidType *ptype)
 649 {
 650         struct rpc_pipe_client *lsa_pipe;
 651         struct policy_handle lsa_policy = { 0 };
 652         char *domain_name = NULL;
 653         char *name = NULL;
 654         enum lsa_SidType type;
 655         TALLOC_CTX *tmp_ctx;
 656         NTSTATUS status;
 657         bool retry = false;
 658
 659         DEBUG(3,("sam_sid_to_name\n"));
 660
 661         /* Paranoia check */
 662         if (!sid_check_is_in_builtin(sid) &&
 663             !sid_check_is_builtin(sid) &&
 664             !sid_check_is_in_our_sam(sid) &&
 665             !sid_check_is_our_sam(sid) &&
 666             !sid_check_is_in_unix_users(sid) &&
 667             !sid_check_is_unix_users(sid) &&
 668             !sid_check_is_in_unix_groups(sid) &&
 669             !sid_check_is_unix_groups(sid) &&
 670             !sid_check_is_in_wellknown_domain(sid)) {
 671                 struct dom_sid_buf buf;
 672                 DEBUG(0, ("sam_sid_to_name: possible deadlock - trying to "
 673                           "lookup SID %s\n",
 674                           dom_sid_str_buf(sid, &buf)));
 675                 return NT_STATUS_NONE_MAPPED;
 676         }
 677
 678         tmp_ctx = talloc_stackframe();
 679         if (tmp_ctx == NULL) {
 680                 return NT_STATUS_NO_MEMORY;
 681         }
 682
 683 again:
 684         status = open_cached_internal_pipe_conn(domain,
 685                                                 NULL,
 686                                                 NULL,
 687                                                 &lsa_pipe,
 688                                                 &lsa_policy);
 689         if (!NT_STATUS_IS_OK(status)) {
 690                 goto done;
 691         }
 692
 693         status = rpc_sid_to_name(tmp_ctx,
 694                                  lsa_pipe,
 695                                  &lsa_policy,
 696                                  domain,
 697                                  sid,
 698                                  &domain_name,
 699                                  &name,
 700                                  &type);
 701
 702         if (!retry && reset_connection_on_error(domain, lsa_pipe, status)) {
 703                 retry = true;
 704                 goto again;
 705         }
 706
 707         if (ptype) {
 708                 *ptype = type;
 709         }
 710
 711         if (pname) {
 712                 *pname = talloc_move(mem_ctx, &name);
 713         }
 714
 715         if (pdomain_name) {
 716                 *pdomain_name = talloc_move(mem_ctx, &domain_name);
 717         }
 718
 719 done:
 720
 721         TALLOC_FREE(tmp_ctx);
 722         return status;
 723 }
 724
 725 static NTSTATUS sam_rids_to_names(struct winbindd_domain *domain,
 726                                   TALLOC_CTX *mem_ctx,
 727                                   const struct dom_sid *domain_sid,
 728                                   uint32_t *rids,
 729                                   size_t num_rids,
 730                                   char **pdomain_name,
 731                                   char ***pnames,
 732                                   enum lsa_SidType **ptypes)
 733 {
 734         struct rpc_pipe_client *lsa_pipe;
 735         struct policy_handle lsa_policy = { 0 };
 736         enum lsa_SidType *types = NULL;
 737         char *domain_name = NULL;
 738         char **names = NULL;
 739         TALLOC_CTX *tmp_ctx;
 740         NTSTATUS status;
 741         bool retry = false;
 742
 743         DEBUG(3,("sam_rids_to_names for %s\n", domain->name));
 744
 745         /* Paranoia check */
 746         if (!sid_check_is_builtin(domain_sid) &&
 747             !sid_check_is_our_sam(domain_sid) &&
 748             !sid_check_is_unix_users(domain_sid) &&
 749             !sid_check_is_unix_groups(domain_sid) &&
 750             !sid_check_is_in_wellknown_domain(domain_sid)) {
 751                 struct dom_sid_buf buf;
 752                 DEBUG(0, ("sam_rids_to_names: possible deadlock - trying to "
 753                           "lookup SID %s\n",
 754                           dom_sid_str_buf(domain_sid, &buf)));
 755                 return NT_STATUS_NONE_MAPPED;
 756         }
 757
 758         tmp_ctx = talloc_stackframe();
 759         if (tmp_ctx == NULL) {
 760                 return NT_STATUS_NO_MEMORY;
 761         }
 762
 763 again:
 764         status = open_cached_internal_pipe_conn(domain,
 765                                                 NULL,
 766                                                 NULL,
 767                                                 &lsa_pipe,
 768                                                 &lsa_policy);
 769         if (!NT_STATUS_IS_OK(status)) {
 770                 goto done;
 771         }
 772
 773         status = rpc_rids_to_names(tmp_ctx,
 774                                    lsa_pipe,
 775                                    &lsa_policy,
 776                                    domain,
 777                                    domain_sid,
 778                                    rids,
 779                                    num_rids,
 780                                    &domain_name,
 781                                    &names,
 782                                    &types);
 783
 784         if (!retry && reset_connection_on_error(domain, lsa_pipe, status)) {
 785                 retry = true;
 786                 goto again;
 787         }
 788
 789         if (!NT_STATUS_IS_OK(status)) {
 790                 goto done;
 791         }
 792
 793         if (pdomain_name) {
 794                 *pdomain_name = talloc_move(mem_ctx, &domain_name);
 795         }
 796
 797         if (ptypes) {
 798                 *ptypes = talloc_move(mem_ctx, &types);
 799         }
 800
 801         if (pnames) {
 802                 *pnames = talloc_move(mem_ctx, &names);
 803         }
 804
 805 done:
 806         TALLOC_FREE(tmp_ctx);
 807         return status;
 808 }
 809
 810 static NTSTATUS sam_lockout_policy(struct winbindd_domain *domain,
 811                                    TALLOC_CTX *mem_ctx,
 812                                    struct samr_DomInfo12 *lockout_policy)
 813 {
 814         struct rpc_pipe_client *samr_pipe;
 815         struct policy_handle dom_pol = { 0 };
 816         union samr_DomainInfo *info = NULL;
 817         TALLOC_CTX *tmp_ctx;
 818         NTSTATUS status, result;
 819         struct dcerpc_binding_handle *b = NULL;
 820         bool retry = false;
 821
 822         DEBUG(3,("sam_lockout_policy\n"));
 823
 824         tmp_ctx = talloc_stackframe();
 825         if (tmp_ctx == NULL) {
 826                 return NT_STATUS_NO_MEMORY;
 827         }
 828
 829 again:
 830         status = open_cached_internal_pipe_conn(domain,
 831                                                 &samr_pipe,
 832                                                 &dom_pol,
 833                                                 NULL,
 834                                                 NULL);
 835         if (!NT_STATUS_IS_OK(status)) {
 836                 goto error;
 837         }
 838
 839         b = samr_pipe->binding_handle;
 840
 841         status = dcerpc_samr_QueryDomainInfo(b,
 842                                              mem_ctx,
 843                                              &dom_pol,
 844                                              DomainLockoutInformation,
 845                                              &info,
 846                                              &result);
 847
 848         if (!retry && reset_connection_on_error(domain, samr_pipe, status)) {
 849                 retry = true;
 850                 goto again;
 851         }
 852
 853         if (!NT_STATUS_IS_OK(status)) {
 854                 goto error;
 855         }
 856         if (!NT_STATUS_IS_OK(result)) {
 857                 status = result;
 858                 goto error;
 859         }
 860
 861         *lockout_policy = info->info12;
 862
 863 error:
 864         TALLOC_FREE(tmp_ctx);
 865         return status;
 866 }
 867
 868 static NTSTATUS sam_password_policy(struct winbindd_domain *domain,
 869                                     TALLOC_CTX *mem_ctx,
 870                                     struct samr_DomInfo1 *passwd_policy)
 871 {
 872         struct rpc_pipe_client *samr_pipe;
 873         struct policy_handle dom_pol = { 0 };
 874         union samr_DomainInfo *info = NULL;
 875         TALLOC_CTX *tmp_ctx;
 876         NTSTATUS status, result;
 877         struct dcerpc_binding_handle *b = NULL;
 878         bool retry = false;
 879
 880         DEBUG(3,("sam_password_policy\n"));
 881
 882         tmp_ctx = talloc_stackframe();
 883         if (tmp_ctx == NULL) {
 884                 return NT_STATUS_NO_MEMORY;
 885         }
 886
 887 again:
 888         status = open_cached_internal_pipe_conn(domain,
 889                                                 &samr_pipe,
 890                                                 &dom_pol,
 891                                                 NULL,
 892                                                 NULL);
 893         if (!NT_STATUS_IS_OK(status)) {
 894                 goto error;
 895         }
 896
 897         b = samr_pipe->binding_handle;
 898
 899         status = dcerpc_samr_QueryDomainInfo(b,
 900                                              mem_ctx,
 901                                              &dom_pol,
 902                                              DomainPasswordInformation,
 903                                              &info,
 904                                              &result);
 905
 906         if (!retry && reset_connection_on_error(domain, samr_pipe, status)) {
 907                 retry = true;
 908                 goto again;
 909         }
 910
 911         if (!NT_STATUS_IS_OK(status)) {
 912                 goto error;
 913         }
 914         if (!NT_STATUS_IS_OK(result)) {
 915                 status = result;
 916                 goto error;
 917         }
 918
 919         *passwd_policy = info->info1;
 920
 921 error:
 922         TALLOC_FREE(tmp_ctx);
 923         return status;
 924 }
 925
 926 /* Lookup groups a user is a member of. */
 927 static NTSTATUS sam_lookup_usergroups(struct winbindd_domain *domain,
 928                                       TALLOC_CTX *mem_ctx,
 929                                       const struct dom_sid *user_sid,
 930                                       uint32_t *pnum_groups,
 931                                       struct dom_sid **puser_grpsids)
 932 {
 933         struct rpc_pipe_client *samr_pipe;
 934         struct policy_handle dom_pol;
 935         struct dom_sid *user_grpsids = NULL;
 936         uint32_t num_groups = 0;
 937         TALLOC_CTX *tmp_ctx;
 938         NTSTATUS status;
 939         bool retry = false;
 940
 941         DEBUG(3,("sam_lookup_usergroups\n"));
 942
 943         ZERO_STRUCT(dom_pol);
 944
 945         if (pnum_groups) {
 946                 *pnum_groups = 0;
 947         }
 948
 949         tmp_ctx = talloc_stackframe();
 950         if (tmp_ctx == NULL) {
 951                 return NT_STATUS_NO_MEMORY;
 952         }
 953
 954 again:
 955         status = open_cached_internal_pipe_conn(domain,
 956                                                 &samr_pipe,
 957                                                 &dom_pol,
 958                                                 NULL,
 959                                                 NULL);
 960         if (!NT_STATUS_IS_OK(status)) {
 961                 goto done;
 962         }
 963
 964         status = rpc_lookup_usergroups(tmp_ctx,
 965                                        samr_pipe,
 966                                        &dom_pol,
 967                                        &domain->sid,
 968                                        user_sid,
 969                                        &num_groups,
 970                                        &user_grpsids);
 971
 972         if (!retry && reset_connection_on_error(domain, samr_pipe, status)) {
 973                 retry = true;
 974                 goto again;
 975         }
 976
 977         if (!NT_STATUS_IS_OK(status)) {
 978                 goto done;
 979         }
 980
 981         if (pnum_groups) {
 982                 *pnum_groups = num_groups;
 983         }
 984
 985         if (puser_grpsids) {
 986                 *puser_grpsids = talloc_move(mem_ctx, &user_grpsids);
 987         }
 988
 989 done:
 990
 991         TALLOC_FREE(tmp_ctx);
 992         return status;
 993 }
 994
 995 static NTSTATUS sam_lookup_useraliases(struct winbindd_domain *domain,
 996                                        TALLOC_CTX *mem_ctx,
 997                                        uint32_t num_sids,
 998                                        const struct dom_sid *sids,
 999                                        uint32_t *pnum_aliases,
1000                                        uint32_t **palias_rids)
1001 {
1002         struct rpc_pipe_client *samr_pipe;
1003         struct policy_handle dom_pol = { 0 };
1004         uint32_t num_aliases = 0;
1005         uint32_t *alias_rids = NULL;
1006         TALLOC_CTX *tmp_ctx;
1007         NTSTATUS status;
1008         bool retry = false;
1009
1010         DEBUG(3,("sam_lookup_useraliases\n"));
1011
1012         if (pnum_aliases) {
1013                 *pnum_aliases = 0;
1014         }
1015
1016         tmp_ctx = talloc_stackframe();
1017         if (tmp_ctx == NULL) {
1018                 return NT_STATUS_NO_MEMORY;
1019         }
1020
1021 again:
1022         status = open_cached_internal_pipe_conn(domain,
1023                                                 &samr_pipe,
1024                                                 &dom_pol,
1025                                                 NULL,
1026                                                 NULL);
1027         if (!NT_STATUS_IS_OK(status)) {
1028                 goto done;
1029         }
1030
1031         status = rpc_lookup_useraliases(tmp_ctx,
1032                                         samr_pipe,
1033                                         &dom_pol,
1034                                         num_sids,
1035                                         sids,
1036                                         &num_aliases,
1037                                         &alias_rids);
1038
1039         if (!retry && reset_connection_on_error(domain, samr_pipe, status)) {
1040                 retry = true;
1041                 goto again;
1042         }
1043
1044         if (!NT_STATUS_IS_OK(status)) {
1045                 goto done;
1046         }
1047
1048         if (pnum_aliases) {
1049                 *pnum_aliases = num_aliases;
1050         }
1051
1052         if (palias_rids) {
1053                 *palias_rids = talloc_move(mem_ctx, &alias_rids);
1054         }
1055
1056 done:
1057
1058         TALLOC_FREE(tmp_ctx);
1059         return status;
1060 }
1061
1062 /* find the sequence number for a domain */
1063 static NTSTATUS sam_sequence_number(struct winbindd_domain *domain,
1064                                     uint32_t *pseq)
1065 {
1066         struct rpc_pipe_client *samr_pipe;
1067         struct policy_handle dom_pol = { 0 };
1068         uint32_t seq = DOM_SEQUENCE_NONE;
1069         TALLOC_CTX *tmp_ctx;
1070         NTSTATUS status;
1071         bool retry = false;
1072
1073         DEBUG(3,("samr: sequence number\n"));
1074
1075         if (pseq) {
1076                 *pseq = DOM_SEQUENCE_NONE;
1077         }
1078
1079         tmp_ctx = talloc_stackframe();
1080         if (tmp_ctx == NULL) {
1081                 return NT_STATUS_NO_MEMORY;
1082         }
1083
1084 again:
1085         status = open_cached_internal_pipe_conn(domain,
1086                                                 &samr_pipe,
1087                                                 &dom_pol,
1088                                                 NULL,
1089                                                 NULL);
1090         if (!NT_STATUS_IS_OK(status)) {
1091                 goto done;
1092         }
1093
1094         status = rpc_sequence_number(tmp_ctx,
1095                                      samr_pipe,
1096                                      &dom_pol,
1097                                      domain->name,
1098                                      &seq);
1099
1100         if (!retry && reset_connection_on_error(domain, samr_pipe, status)) {
1101                 retry = true;
1102                 goto again;
1103         }
1104
1105         if (!NT_STATUS_IS_OK(status)) {
1106                 goto done;
1107         }
1108
1109         if (pseq) {
1110                 *pseq = seq;
1111         }
1112
1113 done:
1114         TALLOC_FREE(tmp_ctx);
1115         return status;
1116 }
1117
1118 /* the rpc backend methods are exposed via this structure */
1119 struct winbindd_methods builtin_passdb_methods = {
1120         .consistent            = false,
1121
1122         .query_user_list       = builtin_query_user_list,
1123         .enum_dom_groups       = builtin_enum_dom_groups,
1124         .enum_local_groups     = sam_enum_local_groups,
1125         .name_to_sid           = sam_name_to_sid,
1126         .sid_to_name           = sam_sid_to_name,
1127         .rids_to_names         = sam_rids_to_names,
1128         .lookup_usergroups     = sam_lookup_usergroups,
1129         .lookup_useraliases    = sam_lookup_useraliases,
1130         .lookup_groupmem       = sam_lookup_groupmem,
1131         .sequence_number       = sam_sequence_number,
1132         .lockout_policy        = sam_lockout_policy,
1133         .password_policy       = sam_password_policy,
1134         .trusted_domains       = builtin_trusted_domains
1135 };
1136
1137 /* the rpc backend methods are exposed via this structure */
1138 struct winbindd_methods sam_passdb_methods = {
1139         .consistent            = false,
1140
1141         .query_user_list       = sam_query_user_list,
1142         .enum_dom_groups       = sam_enum_dom_groups,
1143         .enum_local_groups     = sam_enum_local_groups,
1144         .name_to_sid           = sam_name_to_sid,
1145         .sid_to_name           = sam_sid_to_name,
1146         .rids_to_names         = sam_rids_to_names,
1147         .lookup_usergroups     = sam_lookup_usergroups,
1148         .lookup_useraliases    = sam_lookup_useraliases,
1149         .lookup_groupmem       = sam_lookup_groupmem,
1150         .sequence_number       = sam_sequence_number,
1151         .lockout_policy        = sam_lockout_policy,
1152         .password_policy       = sam_password_policy,
1153         .trusted_domains       = sam_trusted_domains
1154 };