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                                    const char **pdom_name,
 585                                    struct dom_sid *psid,
 586                                    enum lsa_SidType *ptype)
 587 {
 588         struct rpc_pipe_client *lsa_pipe;
 589         struct policy_handle lsa_policy = { 0 };
 590         struct dom_sid sid;
 591         const char *dom_name;
 592         enum lsa_SidType type;
 593         TALLOC_CTX *tmp_ctx;
 594         NTSTATUS status;
 595         bool retry = false;
 596
 597         DEBUG(3,("sam_name_to_sid\n"));
 598
 599         tmp_ctx = talloc_stackframe();
 600         if (tmp_ctx == NULL) {
 601                 return NT_STATUS_NO_MEMORY;
 602         }
 603
 604 again:
 605         status = open_cached_internal_pipe_conn(domain,
 606                                                 NULL,
 607                                                 NULL,
 608                                                 &lsa_pipe,
 609                                                 &lsa_policy);
 610         if (!NT_STATUS_IS_OK(status)) {
 611                 goto done;
 612         }
 613
 614         status = rpc_name_to_sid(tmp_ctx,
 615                                  lsa_pipe,
 616                                  &lsa_policy,
 617                                  domain_name,
 618                                  name,
 619                                  flags,
 620                                  &dom_name,
 621                                  &sid,
 622                                  &type);
 623
 624         if (!retry && reset_connection_on_error(domain, lsa_pipe, status)) {
 625                 retry = true;
 626                 goto again;
 627         }
 628
 629         if (!NT_STATUS_IS_OK(status)) {
 630                 goto done;
 631         }
 632
 633         if (pdom_name != NULL) {
 634                 *pdom_name = talloc_strdup(mem_ctx, dom_name);
 635                 if (*pdom_name == NULL) {
 636                         status = NT_STATUS_NO_MEMORY;
 637                         goto done;
 638                 }
 639         }
 640
 641         if (psid) {
 642                 sid_copy(psid, &sid);
 643         }
 644         if (ptype) {
 645                 *ptype = type;
 646         }
 647
 648 done:
 649         TALLOC_FREE(tmp_ctx);
 650         return status;
 651 }
 652
 653 /* convert a domain SID to a user or group name */
 654 static NTSTATUS sam_sid_to_name(struct winbindd_domain *domain,
 655                                 TALLOC_CTX *mem_ctx,
 656                                 const struct dom_sid *sid,
 657                                 char **pdomain_name,
 658                                 char **pname,
 659                                 enum lsa_SidType *ptype)
 660 {
 661         struct rpc_pipe_client *lsa_pipe;
 662         struct policy_handle lsa_policy = { 0 };
 663         char *domain_name = NULL;
 664         char *name = NULL;
 665         enum lsa_SidType type;
 666         TALLOC_CTX *tmp_ctx;
 667         NTSTATUS status;
 668         bool retry = false;
 669
 670         DEBUG(3,("sam_sid_to_name\n"));
 671
 672         /* Paranoia check */
 673         if (!sid_check_is_in_builtin(sid) &&
 674             !sid_check_is_builtin(sid) &&
 675             !sid_check_is_in_our_sam(sid) &&
 676             !sid_check_is_our_sam(sid) &&
 677             !sid_check_is_in_unix_users(sid) &&
 678             !sid_check_is_unix_users(sid) &&
 679             !sid_check_is_in_unix_groups(sid) &&
 680             !sid_check_is_unix_groups(sid) &&
 681             !sid_check_is_in_wellknown_domain(sid)) {
 682                 DEBUG(0, ("sam_sid_to_name: possible deadlock - trying to "
 683                           "lookup SID %s\n", sid_string_dbg(sid)));
 684                 return NT_STATUS_NONE_MAPPED;
 685         }
 686
 687         tmp_ctx = talloc_stackframe();
 688         if (tmp_ctx == NULL) {
 689                 return NT_STATUS_NO_MEMORY;
 690         }
 691
 692 again:
 693         status = open_cached_internal_pipe_conn(domain,
 694                                                 NULL,
 695                                                 NULL,
 696                                                 &lsa_pipe,
 697                                                 &lsa_policy);
 698         if (!NT_STATUS_IS_OK(status)) {
 699                 goto done;
 700         }
 701
 702         status = rpc_sid_to_name(tmp_ctx,
 703                                  lsa_pipe,
 704                                  &lsa_policy,
 705                                  domain,
 706                                  sid,
 707                                  &domain_name,
 708                                  &name,
 709                                  &type);
 710
 711         if (!retry && reset_connection_on_error(domain, lsa_pipe, status)) {
 712                 retry = true;
 713                 goto again;
 714         }
 715
 716         if (ptype) {
 717                 *ptype = type;
 718         }
 719
 720         if (pname) {
 721                 *pname = talloc_move(mem_ctx, &name);
 722         }
 723
 724         if (pdomain_name) {
 725                 *pdomain_name = talloc_move(mem_ctx, &domain_name);
 726         }
 727
 728 done:
 729
 730         TALLOC_FREE(tmp_ctx);
 731         return status;
 732 }
 733
 734 static NTSTATUS sam_rids_to_names(struct winbindd_domain *domain,
 735                                   TALLOC_CTX *mem_ctx,
 736                                   const struct dom_sid *domain_sid,
 737                                   uint32_t *rids,
 738                                   size_t num_rids,
 739                                   char **pdomain_name,
 740                                   char ***pnames,
 741                                   enum lsa_SidType **ptypes)
 742 {
 743         struct rpc_pipe_client *lsa_pipe;
 744         struct policy_handle lsa_policy = { 0 };
 745         enum lsa_SidType *types = NULL;
 746         char *domain_name = NULL;
 747         char **names = NULL;
 748         TALLOC_CTX *tmp_ctx;
 749         NTSTATUS status;
 750         bool retry = false;
 751
 752         DEBUG(3,("sam_rids_to_names for %s\n", domain->name));
 753
 754         /* Paranoia check */
 755         if (!sid_check_is_builtin(domain_sid) &&
 756             !sid_check_is_our_sam(domain_sid) &&
 757             !sid_check_is_unix_users(domain_sid) &&
 758             !sid_check_is_unix_groups(domain_sid) &&
 759             !sid_check_is_in_wellknown_domain(domain_sid)) {
 760                 DEBUG(0, ("sam_rids_to_names: possible deadlock - trying to "
 761                           "lookup SID %s\n", sid_string_dbg(domain_sid)));
 762                 return NT_STATUS_NONE_MAPPED;
 763         }
 764
 765         tmp_ctx = talloc_stackframe();
 766         if (tmp_ctx == NULL) {
 767                 return NT_STATUS_NO_MEMORY;
 768         }
 769
 770 again:
 771         status = open_cached_internal_pipe_conn(domain,
 772                                                 NULL,
 773                                                 NULL,
 774                                                 &lsa_pipe,
 775                                                 &lsa_policy);
 776         if (!NT_STATUS_IS_OK(status)) {
 777                 goto done;
 778         }
 779
 780         status = rpc_rids_to_names(tmp_ctx,
 781                                    lsa_pipe,
 782                                    &lsa_policy,
 783                                    domain,
 784                                    domain_sid,
 785                                    rids,
 786                                    num_rids,
 787                                    &domain_name,
 788                                    &names,
 789                                    &types);
 790
 791         if (!retry && reset_connection_on_error(domain, lsa_pipe, status)) {
 792                 retry = true;
 793                 goto again;
 794         }
 795
 796         if (!NT_STATUS_IS_OK(status)) {
 797                 goto done;
 798         }
 799
 800         if (pdomain_name) {
 801                 *pdomain_name = talloc_move(mem_ctx, &domain_name);
 802         }
 803
 804         if (ptypes) {
 805                 *ptypes = talloc_move(mem_ctx, &types);
 806         }
 807
 808         if (pnames) {
 809                 *pnames = talloc_move(mem_ctx, &names);
 810         }
 811
 812 done:
 813         TALLOC_FREE(tmp_ctx);
 814         return status;
 815 }
 816
 817 static NTSTATUS sam_lockout_policy(struct winbindd_domain *domain,
 818                                    TALLOC_CTX *mem_ctx,
 819                                    struct samr_DomInfo12 *lockout_policy)
 820 {
 821         struct rpc_pipe_client *samr_pipe;
 822         struct policy_handle dom_pol = { 0 };
 823         union samr_DomainInfo *info = NULL;
 824         TALLOC_CTX *tmp_ctx;
 825         NTSTATUS status, result;
 826         struct dcerpc_binding_handle *b = NULL;
 827         bool retry = false;
 828
 829         DEBUG(3,("sam_lockout_policy\n"));
 830
 831         tmp_ctx = talloc_stackframe();
 832         if (tmp_ctx == NULL) {
 833                 return NT_STATUS_NO_MEMORY;
 834         }
 835
 836 again:
 837         status = open_cached_internal_pipe_conn(domain,
 838                                                 &samr_pipe,
 839                                                 &dom_pol,
 840                                                 NULL,
 841                                                 NULL);
 842         if (!NT_STATUS_IS_OK(status)) {
 843                 goto error;
 844         }
 845
 846         b = samr_pipe->binding_handle;
 847
 848         status = dcerpc_samr_QueryDomainInfo(b,
 849                                              mem_ctx,
 850                                              &dom_pol,
 851                                              DomainLockoutInformation,
 852                                              &info,
 853                                              &result);
 854
 855         if (!retry && reset_connection_on_error(domain, samr_pipe, status)) {
 856                 retry = true;
 857                 goto again;
 858         }
 859
 860         if (!NT_STATUS_IS_OK(status)) {
 861                 goto error;
 862         }
 863         if (!NT_STATUS_IS_OK(result)) {
 864                 status = result;
 865                 goto error;
 866         }
 867
 868         *lockout_policy = info->info12;
 869
 870 error:
 871         TALLOC_FREE(tmp_ctx);
 872         return status;
 873 }
 874
 875 static NTSTATUS sam_password_policy(struct winbindd_domain *domain,
 876                                     TALLOC_CTX *mem_ctx,
 877                                     struct samr_DomInfo1 *passwd_policy)
 878 {
 879         struct rpc_pipe_client *samr_pipe;
 880         struct policy_handle dom_pol = { 0 };
 881         union samr_DomainInfo *info = NULL;
 882         TALLOC_CTX *tmp_ctx;
 883         NTSTATUS status, result;
 884         struct dcerpc_binding_handle *b = NULL;
 885         bool retry = false;
 886
 887         DEBUG(3,("sam_password_policy\n"));
 888
 889         tmp_ctx = talloc_stackframe();
 890         if (tmp_ctx == NULL) {
 891                 return NT_STATUS_NO_MEMORY;
 892         }
 893
 894 again:
 895         status = open_cached_internal_pipe_conn(domain,
 896                                                 &samr_pipe,
 897                                                 &dom_pol,
 898                                                 NULL,
 899                                                 NULL);
 900         if (!NT_STATUS_IS_OK(status)) {
 901                 goto error;
 902         }
 903
 904         b = samr_pipe->binding_handle;
 905
 906         status = dcerpc_samr_QueryDomainInfo(b,
 907                                              mem_ctx,
 908                                              &dom_pol,
 909                                              DomainPasswordInformation,
 910                                              &info,
 911                                              &result);
 912
 913         if (!retry && reset_connection_on_error(domain, samr_pipe, status)) {
 914                 retry = true;
 915                 goto again;
 916         }
 917
 918         if (!NT_STATUS_IS_OK(status)) {
 919                 goto error;
 920         }
 921         if (!NT_STATUS_IS_OK(result)) {
 922                 status = result;
 923                 goto error;
 924         }
 925
 926         *passwd_policy = info->info1;
 927
 928 error:
 929         TALLOC_FREE(tmp_ctx);
 930         return status;
 931 }
 932
 933 /* Lookup groups a user is a member of. */
 934 static NTSTATUS sam_lookup_usergroups(struct winbindd_domain *domain,
 935                                       TALLOC_CTX *mem_ctx,
 936                                       const struct dom_sid *user_sid,
 937                                       uint32_t *pnum_groups,
 938                                       struct dom_sid **puser_grpsids)
 939 {
 940         struct rpc_pipe_client *samr_pipe;
 941         struct policy_handle dom_pol;
 942         struct dom_sid *user_grpsids = NULL;
 943         uint32_t num_groups = 0;
 944         TALLOC_CTX *tmp_ctx;
 945         NTSTATUS status;
 946         bool retry = false;
 947
 948         DEBUG(3,("sam_lookup_usergroups\n"));
 949
 950         ZERO_STRUCT(dom_pol);
 951
 952         if (pnum_groups) {
 953                 *pnum_groups = 0;
 954         }
 955
 956         tmp_ctx = talloc_stackframe();
 957         if (tmp_ctx == NULL) {
 958                 return NT_STATUS_NO_MEMORY;
 959         }
 960
 961 again:
 962         status = open_cached_internal_pipe_conn(domain,
 963                                                 &samr_pipe,
 964                                                 &dom_pol,
 965                                                 NULL,
 966                                                 NULL);
 967         if (!NT_STATUS_IS_OK(status)) {
 968                 goto done;
 969         }
 970
 971         status = rpc_lookup_usergroups(tmp_ctx,
 972                                        samr_pipe,
 973                                        &dom_pol,
 974                                        &domain->sid,
 975                                        user_sid,
 976                                        &num_groups,
 977                                        &user_grpsids);
 978
 979         if (!retry && reset_connection_on_error(domain, samr_pipe, status)) {
 980                 retry = true;
 981                 goto again;
 982         }
 983
 984         if (!NT_STATUS_IS_OK(status)) {
 985                 goto done;
 986         }
 987
 988         if (pnum_groups) {
 989                 *pnum_groups = num_groups;
 990         }
 991
 992         if (puser_grpsids) {
 993                 *puser_grpsids = talloc_move(mem_ctx, &user_grpsids);
 994         }
 995
 996 done:
 997
 998         TALLOC_FREE(tmp_ctx);
 999         return status;
1000 }
1001
1002 static NTSTATUS sam_lookup_useraliases(struct winbindd_domain *domain,
1003                                        TALLOC_CTX *mem_ctx,
1004                                        uint32_t num_sids,
1005                                        const struct dom_sid *sids,
1006                                        uint32_t *pnum_aliases,
1007                                        uint32_t **palias_rids)
1008 {
1009         struct rpc_pipe_client *samr_pipe;
1010         struct policy_handle dom_pol = { 0 };
1011         uint32_t num_aliases = 0;
1012         uint32_t *alias_rids = NULL;
1013         TALLOC_CTX *tmp_ctx;
1014         NTSTATUS status;
1015         bool retry = false;
1016
1017         DEBUG(3,("sam_lookup_useraliases\n"));
1018
1019         if (pnum_aliases) {
1020                 *pnum_aliases = 0;
1021         }
1022
1023         tmp_ctx = talloc_stackframe();
1024         if (tmp_ctx == NULL) {
1025                 return NT_STATUS_NO_MEMORY;
1026         }
1027
1028 again:
1029         status = open_cached_internal_pipe_conn(domain,
1030                                                 &samr_pipe,
1031                                                 &dom_pol,
1032                                                 NULL,
1033                                                 NULL);
1034         if (!NT_STATUS_IS_OK(status)) {
1035                 goto done;
1036         }
1037
1038         status = rpc_lookup_useraliases(tmp_ctx,
1039                                         samr_pipe,
1040                                         &dom_pol,
1041                                         num_sids,
1042                                         sids,
1043                                         &num_aliases,
1044                                         &alias_rids);
1045
1046         if (!retry && reset_connection_on_error(domain, samr_pipe, status)) {
1047                 retry = true;
1048                 goto again;
1049         }
1050
1051         if (!NT_STATUS_IS_OK(status)) {
1052                 goto done;
1053         }
1054
1055         if (pnum_aliases) {
1056                 *pnum_aliases = num_aliases;
1057         }
1058
1059         if (palias_rids) {
1060                 *palias_rids = talloc_move(mem_ctx, &alias_rids);
1061         }
1062
1063 done:
1064
1065         TALLOC_FREE(tmp_ctx);
1066         return status;
1067 }
1068
1069 /* find the sequence number for a domain */
1070 static NTSTATUS sam_sequence_number(struct winbindd_domain *domain,
1071                                     uint32_t *pseq)
1072 {
1073         struct rpc_pipe_client *samr_pipe;
1074         struct policy_handle dom_pol = { 0 };
1075         uint32_t seq = DOM_SEQUENCE_NONE;
1076         TALLOC_CTX *tmp_ctx;
1077         NTSTATUS status;
1078         bool retry = false;
1079
1080         DEBUG(3,("samr: sequence number\n"));
1081
1082         if (pseq) {
1083                 *pseq = DOM_SEQUENCE_NONE;
1084         }
1085
1086         tmp_ctx = talloc_stackframe();
1087         if (tmp_ctx == NULL) {
1088                 return NT_STATUS_NO_MEMORY;
1089         }
1090
1091 again:
1092         status = open_cached_internal_pipe_conn(domain,
1093                                                 &samr_pipe,
1094                                                 &dom_pol,
1095                                                 NULL,
1096                                                 NULL);
1097         if (!NT_STATUS_IS_OK(status)) {
1098                 goto done;
1099         }
1100
1101         status = rpc_sequence_number(tmp_ctx,
1102                                      samr_pipe,
1103                                      &dom_pol,
1104                                      domain->name,
1105                                      &seq);
1106
1107         if (!retry && reset_connection_on_error(domain, samr_pipe, status)) {
1108                 retry = true;
1109                 goto again;
1110         }
1111
1112         if (!NT_STATUS_IS_OK(status)) {
1113                 goto done;
1114         }
1115
1116         if (pseq) {
1117                 *pseq = seq;
1118         }
1119
1120 done:
1121         TALLOC_FREE(tmp_ctx);
1122         return status;
1123 }
1124
1125 /* the rpc backend methods are exposed via this structure */
1126 struct winbindd_methods builtin_passdb_methods = {
1127         .consistent            = false,
1128
1129         .query_user_list       = builtin_query_user_list,
1130         .enum_dom_groups       = builtin_enum_dom_groups,
1131         .enum_local_groups     = sam_enum_local_groups,
1132         .name_to_sid           = sam_name_to_sid,
1133         .sid_to_name           = sam_sid_to_name,
1134         .rids_to_names         = sam_rids_to_names,
1135         .lookup_usergroups     = sam_lookup_usergroups,
1136         .lookup_useraliases    = sam_lookup_useraliases,
1137         .lookup_groupmem       = sam_lookup_groupmem,
1138         .sequence_number       = sam_sequence_number,
1139         .lockout_policy        = sam_lockout_policy,
1140         .password_policy       = sam_password_policy,
1141         .trusted_domains       = builtin_trusted_domains
1142 };
1143
1144 /* the rpc backend methods are exposed via this structure */
1145 struct winbindd_methods sam_passdb_methods = {
1146         .consistent            = false,
1147
1148         .query_user_list       = sam_query_user_list,
1149         .enum_dom_groups       = sam_enum_dom_groups,
1150         .enum_local_groups     = sam_enum_local_groups,
1151         .name_to_sid           = sam_name_to_sid,
1152         .sid_to_name           = sam_sid_to_name,
1153         .rids_to_names         = sam_rids_to_names,
1154         .lookup_usergroups     = sam_lookup_usergroups,
1155         .lookup_useraliases    = sam_lookup_useraliases,
1156         .lookup_groupmem       = sam_lookup_groupmem,
1157         .sequence_number       = sam_sequence_number,
1158         .lockout_policy        = sam_lockout_policy,
1159         .password_policy       = sam_password_policy,
1160         .trusted_domains       = sam_trusted_domains
1161 };