source3/winbindd/winbindd_msrpc.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3
   4    Winbind rpc backend functions
   5
   6    Copyright (C) Tim Potter 2000-2001,2003
   7    Copyright (C) Andrew Tridgell 2001
   8    Copyright (C) Volker Lendecke 2005
   9    Copyright (C) Guenther Deschner 2008 (pidl conversion)
  10
  11    This program is free software; you can redistribute it and/or modify
  12    it under the terms of the GNU General Public License as published by
  13    the Free Software Foundation; either version 3 of the License, or
  14    (at your option) any later version.
  15
  16    This program is distributed in the hope that it will be useful,
  17    but WITHOUT ANY WARRANTY; without even the implied warranty of
  18    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19    GNU General Public License for more details.
  20
  21    You should have received a copy of the GNU General Public License
  22    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  23 */
  24
  25 #include "includes.h"
  26 #include "winbindd.h"
  27 #include "winbindd_rpc.h"
  28
  29 #include "../librpc/gen_ndr/ndr_samr_c.h"
  30 #include "rpc_client/cli_pipe.h"
  31 #include "rpc_client/cli_samr.h"
  32 #include "rpc_client/cli_lsarpc.h"
  33 #include "../libcli/security/security.h"
  34 #include "libsmb/samlogon_cache.h"
  35
  36 #undef DBGC_CLASS
  37 #define DBGC_CLASS DBGC_WINBIND
  38
  39 static NTSTATUS winbindd_lookup_names(TALLOC_CTX *mem_ctx,
  40                                       struct winbindd_domain *domain,
  41                                       uint32_t num_names,
  42                                       const char **names,
  43                                       const char ***domains,
  44                                       struct dom_sid **sids,
  45                                       enum lsa_SidType **types);
  46
  47 /* Query display info for a domain.  This returns enough information plus a
  48    bit extra to give an overview of domain users for the User Manager
  49    application. */
  50 static NTSTATUS msrpc_query_user_list(struct winbindd_domain *domain,
  51                                       TALLOC_CTX *mem_ctx,
  52                                       uint32_t **prids)
  53 {
  54         struct rpc_pipe_client *samr_pipe = NULL;
  55         struct policy_handle dom_pol;
  56         uint32_t *rids = NULL;
  57         TALLOC_CTX *tmp_ctx;
  58         NTSTATUS status;
  59
  60         DEBUG(3, ("msrpc_query_user_list\n"));
  61
  62         tmp_ctx = talloc_stackframe();
  63         if (tmp_ctx == NULL) {
  64                 return NT_STATUS_NO_MEMORY;
  65         }
  66
  67         if ( !winbindd_can_contact_domain( domain ) ) {
  68                 DEBUG(10,("query_user_list: No incoming trust for domain %s\n",
  69                           domain->name));
  70                 status = NT_STATUS_OK;
  71                 goto done;
  72         }
  73
  74         status = cm_connect_sam(domain, tmp_ctx, false, &samr_pipe, &dom_pol);
  75         if (!NT_STATUS_IS_OK(status)) {
  76                 goto done;
  77         }
  78
  79         status = rpc_query_user_list(tmp_ctx,
  80                                      samr_pipe,
  81                                      &dom_pol,
  82                                      &domain->sid,
  83                                      &rids);
  84         if (!NT_STATUS_IS_OK(status)) {
  85                 goto done;
  86         }
  87
  88         if (prids) {
  89                 *prids = talloc_move(mem_ctx, &rids);
  90         }
  91
  92 done:
  93         TALLOC_FREE(rids);
  94         TALLOC_FREE(tmp_ctx);
  95         return status;
  96 }
  97
  98 /* list all domain groups */
  99 static NTSTATUS msrpc_enum_dom_groups(struct winbindd_domain *domain,
 100                                       TALLOC_CTX *mem_ctx,
 101                                       uint32_t *pnum_info,
 102                                       struct wb_acct_info **pinfo)
 103 {
 104         struct rpc_pipe_client *samr_pipe;
 105         struct policy_handle dom_pol;
 106         struct wb_acct_info *info = NULL;
 107         uint32_t num_info = 0;
 108         TALLOC_CTX *tmp_ctx;
 109         NTSTATUS status;
 110
 111         DEBUG(3,("msrpc_enum_dom_groups\n"));
 112
 113         if (pnum_info) {
 114                 *pnum_info = 0;
 115         }
 116
 117         tmp_ctx = talloc_stackframe();
 118         if (tmp_ctx == NULL) {
 119                 return NT_STATUS_NO_MEMORY;
 120         }
 121
 122         if ( !winbindd_can_contact_domain( domain ) ) {
 123                 DEBUG(10,("enum_domain_groups: No incoming trust for domain %s\n",
 124                           domain->name));
 125                 status = NT_STATUS_OK;
 126                 goto done;
 127         }
 128
 129         status = cm_connect_sam(domain, tmp_ctx, false, &samr_pipe, &dom_pol);
 130         if (!NT_STATUS_IS_OK(status)) {
 131                 goto done;
 132         }
 133
 134         status = rpc_enum_dom_groups(tmp_ctx,
 135                                      samr_pipe,
 136                                      &dom_pol,
 137                                      &num_info,
 138                                      &info);
 139         if (!NT_STATUS_IS_OK(status)) {
 140                 goto done;
 141         }
 142
 143         if (pnum_info) {
 144                 *pnum_info = num_info;
 145         }
 146
 147         if (pinfo) {
 148                 *pinfo = talloc_move(mem_ctx, &info);
 149         }
 150
 151 done:
 152         TALLOC_FREE(tmp_ctx);
 153         return status;
 154 }
 155
 156 /* List all domain groups */
 157
 158 static NTSTATUS msrpc_enum_local_groups(struct winbindd_domain *domain,
 159                                         TALLOC_CTX *mem_ctx,
 160                                         uint32_t *pnum_info,
 161                                         struct wb_acct_info **pinfo)
 162 {
 163         struct rpc_pipe_client *samr_pipe;
 164         struct policy_handle dom_pol;
 165         struct wb_acct_info *info = NULL;
 166         uint32_t num_info = 0;
 167         TALLOC_CTX *tmp_ctx;
 168         NTSTATUS status;
 169
 170         DEBUG(3,("msrpc_enum_local_groups\n"));
 171
 172         if (pnum_info) {
 173                 *pnum_info = 0;
 174         }
 175
 176         tmp_ctx = talloc_stackframe();
 177         if (tmp_ctx == NULL) {
 178                 return NT_STATUS_NO_MEMORY;
 179         }
 180
 181         if ( !winbindd_can_contact_domain( domain ) ) {
 182                 DEBUG(10,("enum_local_groups: No incoming trust for domain %s\n",
 183                           domain->name));
 184                 status = NT_STATUS_OK;
 185                 goto done;
 186         }
 187
 188         status = cm_connect_sam(domain, tmp_ctx, false, &samr_pipe, &dom_pol);
 189         if (!NT_STATUS_IS_OK(status)) {
 190                 goto done;
 191         }
 192
 193         status = rpc_enum_local_groups(mem_ctx,
 194                                        samr_pipe,
 195                                        &dom_pol,
 196                                        &num_info,
 197                                        &info);
 198         if (!NT_STATUS_IS_OK(status)) {
 199                 goto done;
 200         }
 201
 202         if (pnum_info) {
 203                 *pnum_info = num_info;
 204         }
 205
 206         if (pinfo) {
 207                 *pinfo = talloc_move(mem_ctx, &info);
 208         }
 209
 210 done:
 211         TALLOC_FREE(tmp_ctx);
 212         return status;
 213 }
 214
 215 /* convert a single name to a sid in a domain */
 216 static NTSTATUS msrpc_name_to_sid(struct winbindd_domain *domain,
 217                                   TALLOC_CTX *mem_ctx,
 218                                   const char *domain_name,
 219                                   const char *name,
 220                                   uint32_t flags,
 221                                   struct dom_sid *sid,
 222                                   enum lsa_SidType *type)
 223 {
 224         NTSTATUS result;
 225         struct dom_sid *sids = NULL;
 226         enum lsa_SidType *types = NULL;
 227         char *full_name = NULL;
 228         const char *names[1];
 229         NTSTATUS name_map_status = NT_STATUS_UNSUCCESSFUL;
 230         char *mapped_name = NULL;
 231
 232         if (name == NULL || *name=='\0') {
 233                 full_name = talloc_asprintf(mem_ctx, "%s", domain_name);
 234         } else if (domain_name == NULL || *domain_name == '\0') {
 235                 full_name = talloc_asprintf(mem_ctx, "%s", name);
 236         } else {
 237                 full_name = talloc_asprintf(mem_ctx, "%s\\%s", domain_name, name);
 238         }
 239         if (!full_name) {
 240                 DEBUG(0, ("talloc_asprintf failed!\n"));
 241                 return NT_STATUS_NO_MEMORY;
 242         }
 243
 244         DEBUG(3, ("msrpc_name_to_sid: name=%s\n", full_name));
 245
 246         name_map_status = normalize_name_unmap(mem_ctx, full_name,
 247                                                &mapped_name);
 248
 249         /* Reset the full_name pointer if we mapped anything */
 250
 251         if (NT_STATUS_IS_OK(name_map_status) ||
 252             NT_STATUS_EQUAL(name_map_status, NT_STATUS_FILE_RENAMED))
 253         {
 254                 full_name = mapped_name;
 255         }
 256
 257         DEBUG(3,("name_to_sid [rpc] %s for domain %s\n",
 258                  full_name?full_name:"", domain_name ));
 259
 260         names[0] = full_name;
 261
 262         result = winbindd_lookup_names(mem_ctx, domain, 1,
 263                                        names, NULL,
 264                                        &sids, &types);
 265         if (!NT_STATUS_IS_OK(result))
 266                 return result;
 267
 268         /* Return rid and type if lookup successful */
 269
 270         sid_copy(sid, &sids[0]);
 271         *type = types[0];
 272
 273         return NT_STATUS_OK;
 274 }
 275
 276 /*
 277   convert a domain SID to a user or group name
 278 */
 279 static NTSTATUS msrpc_sid_to_name(struct winbindd_domain *domain,
 280                                   TALLOC_CTX *mem_ctx,
 281                                   const struct dom_sid *sid,
 282                                   char **domain_name,
 283                                   char **name,
 284                                   enum lsa_SidType *type)
 285 {
 286         char **domains;
 287         char **names;
 288         enum lsa_SidType *types = NULL;
 289         NTSTATUS result;
 290         NTSTATUS name_map_status = NT_STATUS_UNSUCCESSFUL;
 291         char *mapped_name = NULL;
 292
 293         DEBUG(3, ("msrpc_sid_to_name: %s for domain %s\n", sid_string_dbg(sid),
 294                  domain->name ));
 295
 296         result = winbindd_lookup_sids(mem_ctx,
 297                                       domain,
 298                                       1,
 299                                       sid,
 300                                       &domains,
 301                                       &names,
 302                                       &types);
 303         if (!NT_STATUS_IS_OK(result)) {
 304                 DEBUG(2,("msrpc_sid_to_name: failed to lookup sids: %s\n",
 305                         nt_errstr(result)));
 306                 return result;
 307         }
 308
 309
 310         *type = (enum lsa_SidType)types[0];
 311         *domain_name = domains[0];
 312         *name = names[0];
 313
 314         DEBUG(5,("Mapped sid to [%s]\\[%s]\n", domains[0], *name));
 315
 316         name_map_status = normalize_name_map(mem_ctx, domain->name, *name,
 317                                              &mapped_name);
 318         if (NT_STATUS_IS_OK(name_map_status) ||
 319             NT_STATUS_EQUAL(name_map_status, NT_STATUS_FILE_RENAMED))
 320         {
 321                 *name = mapped_name;
 322                 DEBUG(5,("returning mapped name -- %s\n", *name));
 323         }
 324
 325         return NT_STATUS_OK;
 326 }
 327
 328 static NTSTATUS msrpc_rids_to_names(struct winbindd_domain *domain,
 329                                     TALLOC_CTX *mem_ctx,
 330                                     const struct dom_sid *sid,
 331                                     uint32_t *rids,
 332                                     size_t num_rids,
 333                                     char **domain_name,
 334                                     char ***names,
 335                                     enum lsa_SidType **types)
 336 {
 337         char **domains;
 338         NTSTATUS result;
 339         struct dom_sid *sids;
 340         size_t i;
 341         char **ret_names;
 342
 343         DEBUG(3, ("msrpc_rids_to_names: domain %s\n", domain->name ));
 344
 345         if (num_rids) {
 346                 sids = talloc_array(mem_ctx, struct dom_sid, num_rids);
 347                 if (sids == NULL) {
 348                         return NT_STATUS_NO_MEMORY;
 349                 }
 350         } else {
 351                 sids = NULL;
 352         }
 353
 354         for (i=0; i<num_rids; i++) {
 355                 if (!sid_compose(&sids[i], sid, rids[i])) {
 356                         return NT_STATUS_INTERNAL_ERROR;
 357                 }
 358         }
 359
 360         result = winbindd_lookup_sids(mem_ctx,
 361                                       domain,
 362                                       num_rids,
 363                                       sids,
 364                                       &domains,
 365                                       names,
 366                                       types);
 367
 368         if (!NT_STATUS_IS_OK(result) &&
 369             !NT_STATUS_EQUAL(result, STATUS_SOME_UNMAPPED)) {
 370                 return result;
 371         }
 372
 373         ret_names = *names;
 374         for (i=0; i<num_rids; i++) {
 375                 NTSTATUS name_map_status = NT_STATUS_UNSUCCESSFUL;
 376                 char *mapped_name = NULL;
 377
 378                 if ((*types)[i] != SID_NAME_UNKNOWN) {
 379                         name_map_status = normalize_name_map(mem_ctx,
 380                                                              domain->name,
 381                                                              ret_names[i],
 382                                                              &mapped_name);
 383                         if (NT_STATUS_IS_OK(name_map_status) ||
 384                             NT_STATUS_EQUAL(name_map_status, NT_STATUS_FILE_RENAMED))
 385                         {
 386                                 ret_names[i] = mapped_name;
 387                         }
 388
 389                         *domain_name = domains[i];
 390                 }
 391         }
 392
 393         return result;
 394 }
 395
 396 /* Lookup groups a user is a member of.  I wish Unix had a call like this! */
 397 static NTSTATUS msrpc_lookup_usergroups(struct winbindd_domain *domain,
 398                                         TALLOC_CTX *mem_ctx,
 399                                         const struct dom_sid *user_sid,
 400                                         uint32_t *pnum_groups,
 401                                         struct dom_sid **puser_grpsids)
 402 {
 403         struct rpc_pipe_client *samr_pipe;
 404         struct policy_handle dom_pol;
 405         struct dom_sid *user_grpsids = NULL;
 406         uint32_t num_groups = 0;
 407         TALLOC_CTX *tmp_ctx;
 408         NTSTATUS status;
 409
 410         DEBUG(3,("msrpc_lookup_usergroups sid=%s\n", sid_string_dbg(user_sid)));
 411
 412         *pnum_groups = 0;
 413
 414         tmp_ctx = talloc_stackframe();
 415         if (tmp_ctx == NULL) {
 416                 return NT_STATUS_NO_MEMORY;
 417         }
 418
 419         /* Check if we have a cached user_info_3 */
 420         status = lookup_usergroups_cached(tmp_ctx,
 421                                           user_sid,
 422                                           &num_groups,
 423                                           &user_grpsids);
 424         if (NT_STATUS_IS_OK(status)) {
 425                 goto cached;
 426         }
 427
 428         if ( !winbindd_can_contact_domain( domain ) ) {
 429                 DEBUG(10,("lookup_usergroups: No incoming trust for domain %s\n",
 430                           domain->name));
 431
 432                 /* Tell the cache manager not to remember this one */
 433                 status = NT_STATUS_SYNCHRONIZATION_REQUIRED;
 434                 goto done;
 435         }
 436
 437         /* no cache; hit the wire */
 438         status = cm_connect_sam(domain, tmp_ctx, false, &samr_pipe, &dom_pol);
 439         if (!NT_STATUS_IS_OK(status)) {
 440                 goto done;
 441         }
 442
 443         status = rpc_lookup_usergroups(tmp_ctx,
 444                                        samr_pipe,
 445                                        &dom_pol,
 446                                        &domain->sid,
 447                                        user_sid,
 448                                        &num_groups,
 449                                        &user_grpsids);
 450         if (!NT_STATUS_IS_OK(status)) {
 451                 goto done;
 452         }
 453
 454 cached:
 455         *pnum_groups = num_groups;
 456
 457         if (puser_grpsids) {
 458                 *puser_grpsids = talloc_move(mem_ctx, &user_grpsids);
 459         }
 460
 461 done:
 462         TALLOC_FREE(tmp_ctx);
 463         return status;
 464         return NT_STATUS_OK;
 465 }
 466
 467 #define MAX_SAM_ENTRIES_W2K 0x400 /* 1024 */
 468
 469 static NTSTATUS msrpc_lookup_useraliases(struct winbindd_domain *domain,
 470                                          TALLOC_CTX *mem_ctx,
 471                                          uint32_t num_sids, const struct dom_sid *sids,
 472                                          uint32_t *pnum_aliases,
 473                                          uint32_t **palias_rids)
 474 {
 475         struct rpc_pipe_client *samr_pipe;
 476         struct policy_handle dom_pol;
 477         uint32_t num_aliases = 0;
 478         uint32_t *alias_rids = NULL;
 479         TALLOC_CTX *tmp_ctx;
 480         NTSTATUS status;
 481
 482         DEBUG(3,("msrpc_lookup_useraliases\n"));
 483
 484         if (pnum_aliases) {
 485                 *pnum_aliases = 0;
 486         }
 487
 488         tmp_ctx = talloc_stackframe();
 489         if (tmp_ctx == NULL) {
 490                 return NT_STATUS_NO_MEMORY;
 491         }
 492
 493         if (!winbindd_can_contact_domain(domain)) {
 494                 DEBUG(10,("msrpc_lookup_useraliases: No incoming trust for domain %s\n",
 495                           domain->name));
 496                 /* Tell the cache manager not to remember this one */
 497                 status = NT_STATUS_SYNCHRONIZATION_REQUIRED;
 498                 goto done;
 499         }
 500
 501         status = cm_connect_sam(domain, tmp_ctx, false, &samr_pipe, &dom_pol);
 502         if (!NT_STATUS_IS_OK(status)) {
 503                 goto done;
 504         }
 505
 506         status = rpc_lookup_useraliases(tmp_ctx,
 507                                         samr_pipe,
 508                                         &dom_pol,
 509                                         num_sids,
 510                                         sids,
 511                                         &num_aliases,
 512                                         &alias_rids);
 513         if (!NT_STATUS_IS_OK(status)) {
 514                 goto done;
 515         }
 516
 517         if (pnum_aliases) {
 518                 *pnum_aliases = num_aliases;
 519         }
 520
 521         if (palias_rids) {
 522                 *palias_rids = talloc_move(mem_ctx, &alias_rids);
 523         }
 524
 525 done:
 526         TALLOC_FREE(tmp_ctx);
 527         return status;
 528 }
 529
 530
 531 /* Lookup group membership given a rid.   */
 532 static NTSTATUS msrpc_lookup_groupmem(struct winbindd_domain *domain,
 533                                       TALLOC_CTX *mem_ctx,
 534                                       const struct dom_sid *group_sid,
 535                                       enum lsa_SidType type,
 536                                       uint32_t *num_names,
 537                                       struct dom_sid **sid_mem,
 538                                       char ***names,
 539                                       uint32_t **name_types)
 540 {
 541         NTSTATUS status, result;
 542         uint32_t i, total_names = 0;
 543         struct policy_handle dom_pol, group_pol;
 544         uint32_t des_access = SEC_FLAG_MAXIMUM_ALLOWED;
 545         uint32_t *rid_mem = NULL;
 546         uint32_t group_rid;
 547         unsigned int j, r;
 548         struct rpc_pipe_client *cli;
 549         unsigned int orig_timeout;
 550         struct samr_RidAttrArray *rids = NULL;
 551         struct dcerpc_binding_handle *b;
 552
 553         DEBUG(3,("msrpc_lookup_groupmem: %s sid=%s\n", domain->name,
 554                   sid_string_dbg(group_sid)));
 555
 556         if ( !winbindd_can_contact_domain( domain ) ) {
 557                 DEBUG(10,("lookup_groupmem: No incoming trust for domain %s\n",
 558                           domain->name));
 559                 return NT_STATUS_OK;
 560         }
 561
 562         if (!sid_peek_check_rid(&domain->sid, group_sid, &group_rid))
 563                 return NT_STATUS_UNSUCCESSFUL;
 564
 565         *num_names = 0;
 566
 567         result = cm_connect_sam(domain, mem_ctx, false, &cli, &dom_pol);
 568         if (!NT_STATUS_IS_OK(result))
 569                 return result;
 570
 571         b = cli->binding_handle;
 572
 573         status = dcerpc_samr_OpenGroup(b, mem_ctx,
 574                                        &dom_pol,
 575                                        des_access,
 576                                        group_rid,
 577                                        &group_pol,
 578                                        &result);
 579         if (any_nt_status_not_ok(status, result, &status)) {
 580                 return status;
 581         }
 582
 583         /* Step #1: Get a list of user rids that are the members of the
 584            group. */
 585
 586         /* This call can take a long time - allow the server to time out.
 587            35 seconds should do it. */
 588
 589         orig_timeout = rpccli_set_timeout(cli, 35000);
 590
 591         status = dcerpc_samr_QueryGroupMember(b, mem_ctx,
 592                                               &group_pol,
 593                                               &rids,
 594                                               &result);
 595
 596         /* And restore our original timeout. */
 597         rpccli_set_timeout(cli, orig_timeout);
 598
 599         {
 600                 NTSTATUS _result;
 601                 dcerpc_samr_Close(b, mem_ctx, &group_pol, &_result);
 602         }
 603
 604         if (any_nt_status_not_ok(status, result, &status)) {
 605                 return status;
 606         }
 607
 608         if (!rids || !rids->count) {
 609                 names = NULL;
 610                 name_types = NULL;
 611                 sid_mem = NULL;
 612                 return NT_STATUS_OK;
 613         }
 614
 615         *num_names = rids->count;
 616         rid_mem = rids->rids;
 617
 618         /* Step #2: Convert list of rids into list of usernames.  Do this
 619            in bunches of ~1000 to avoid crashing NT4.  It looks like there
 620            is a buffer overflow or something like that lurking around
 621            somewhere. */
 622
 623 #define MAX_LOOKUP_RIDS 900
 624
 625         *names = talloc_zero_array(mem_ctx, char *, *num_names);
 626         *name_types = talloc_zero_array(mem_ctx, uint32_t, *num_names);
 627         *sid_mem = talloc_zero_array(mem_ctx, struct dom_sid, *num_names);
 628
 629         for (j=0;j<(*num_names);j++)
 630                 sid_compose(&(*sid_mem)[j], &domain->sid, rid_mem[j]);
 631
 632         if (*num_names>0 && (!*names || !*name_types))
 633                 return NT_STATUS_NO_MEMORY;
 634
 635         for (i = 0; i < *num_names; i += MAX_LOOKUP_RIDS) {
 636                 int num_lookup_rids = MIN(*num_names - i, MAX_LOOKUP_RIDS);
 637                 struct lsa_Strings tmp_names;
 638                 struct samr_Ids tmp_types;
 639
 640                 /* Lookup a chunk of rids */
 641
 642                 status = dcerpc_samr_LookupRids(b, mem_ctx,
 643                                                 &dom_pol,
 644                                                 num_lookup_rids,
 645                                                 &rid_mem[i],
 646                                                 &tmp_names,
 647                                                 &tmp_types,
 648                                                 &result);
 649                 if (!NT_STATUS_IS_OK(status)) {
 650                         return status;
 651                 }
 652
 653                 /* see if we have a real error (and yes the
 654                    STATUS_SOME_UNMAPPED is the one returned from 2k) */
 655
 656                 if (!NT_STATUS_IS_OK(result) &&
 657                     !NT_STATUS_EQUAL(result, STATUS_SOME_UNMAPPED))
 658                         return result;
 659
 660                 /* Copy result into array.  The talloc system will take
 661                    care of freeing the temporary arrays later on. */
 662
 663                 if (tmp_names.count != num_lookup_rids) {
 664                         return NT_STATUS_INVALID_NETWORK_RESPONSE;
 665                 }
 666                 if (tmp_types.count != num_lookup_rids) {
 667                         return NT_STATUS_INVALID_NETWORK_RESPONSE;
 668                 }
 669
 670                 for (r=0; r<tmp_names.count; r++) {
 671                         if (tmp_types.ids[r] == SID_NAME_UNKNOWN) {
 672                                 continue;
 673                         }
 674                         if (total_names >= *num_names) {
 675                                 break;
 676                         }
 677                         (*names)[total_names] = fill_domain_username_talloc(
 678                                 mem_ctx, domain->name,
 679                                 tmp_names.names[r].string, true);
 680                         (*name_types)[total_names] = tmp_types.ids[r];
 681                         total_names += 1;
 682                 }
 683         }
 684
 685         *num_names = total_names;
 686
 687         return NT_STATUS_OK;
 688 }
 689
 690 #ifdef HAVE_LDAP
 691
 692 #include "ads.h"
 693
 694 static int get_ldap_seq(const char *server, struct sockaddr_storage *ss, int port, uint32_t *seq)
 695 {
 696         int ret = -1;
 697         struct timeval to;
 698         const char *attrs[] = {"highestCommittedUSN", NULL};
 699         LDAPMessage *res = NULL;
 700         char **values = NULL;
 701         LDAP *ldp = NULL;
 702
 703         *seq = DOM_SEQUENCE_NONE;
 704
 705         /*
 706          * Parameterised (5) second timeout on open. This is needed as the
 707          * search timeout doesn't seem to apply to doing an open as well. JRA.
 708          */
 709
 710         ldp = ldap_open_with_timeout(server, ss, port, lp_ldap_timeout());
 711         if (ldp == NULL)
 712                 return -1;
 713
 714         /* Timeout if no response within 20 seconds. */
 715         to.tv_sec = 10;
 716         to.tv_usec = 0;
 717
 718         if (ldap_search_st(ldp, "", LDAP_SCOPE_BASE, "(objectclass=*)",
 719                            discard_const_p(char *, attrs), 0, &to, &res))
 720                 goto done;
 721
 722         if (ldap_count_entries(ldp, res) != 1)
 723                 goto done;
 724
 725         values = ldap_get_values(ldp, res, "highestCommittedUSN");
 726         if (!values || !values[0])
 727                 goto done;
 728
 729         *seq = atoi(values[0]);
 730         ret = 0;
 731
 732   done:
 733
 734         if (values)
 735                 ldap_value_free(values);
 736         if (res)
 737                 ldap_msgfree(res);
 738         if (ldp)
 739                 ldap_unbind(ldp);
 740         return ret;
 741 }
 742
 743 /**********************************************************************
 744  Get the sequence number for a Windows AD native mode domain using
 745  LDAP queries.
 746 **********************************************************************/
 747
 748 static int get_ldap_sequence_number(struct winbindd_domain *domain, uint32_t *seq)
 749 {
 750         int ret = -1;
 751         char addr[INET6_ADDRSTRLEN];
 752
 753         print_sockaddr(addr, sizeof(addr), &domain->dcaddr);
 754         if ((ret = get_ldap_seq(addr, &domain->dcaddr, LDAP_PORT, seq)) == 0) {
 755                 DEBUG(3, ("get_ldap_sequence_number: Retrieved sequence "
 756                           "number for Domain (%s) from DC (%s)\n",
 757                         domain->name, addr));
 758         }
 759         return ret;
 760 }
 761
 762 #endif /* HAVE_LDAP */
 763
 764 /* find the sequence number for a domain */
 765 static NTSTATUS msrpc_sequence_number(struct winbindd_domain *domain,
 766                                       uint32_t *pseq)
 767 {
 768         struct rpc_pipe_client *samr_pipe;
 769         struct policy_handle dom_pol;
 770         uint32_t seq = DOM_SEQUENCE_NONE;
 771         TALLOC_CTX *tmp_ctx;
 772         NTSTATUS status;
 773
 774         DEBUG(3, ("msrpc_sequence_number: fetch sequence_number for %s\n", domain->name));
 775
 776         if (pseq) {
 777                 *pseq = DOM_SEQUENCE_NONE;
 778         }
 779
 780         tmp_ctx = talloc_stackframe();
 781         if (tmp_ctx == NULL) {
 782                 return NT_STATUS_NO_MEMORY;
 783         }
 784
 785         if ( !winbindd_can_contact_domain( domain ) ) {
 786                 DEBUG(10,("sequence_number: No incoming trust for domain %s\n",
 787                           domain->name));
 788                 if (pseq) {
 789                         *pseq = time(NULL);
 790                 }
 791                 status = NT_STATUS_OK;
 792                 goto done;
 793         }
 794
 795 #ifdef HAVE_LDAP
 796         if (domain->active_directory) {
 797                 int rc;
 798
 799                 DEBUG(8,("using get_ldap_seq() to retrieve the "
 800                          "sequence number\n"));
 801
 802                 rc =  get_ldap_sequence_number(domain, &seq);
 803                 if (rc == 0) {
 804                         DEBUG(10,("domain_sequence_number: LDAP for "
 805                                   "domain %s is %u\n",
 806                                   domain->name, seq));
 807
 808                         if (pseq) {
 809                                 *pseq = seq;
 810                         }
 811
 812                         status = NT_STATUS_OK;
 813                         goto done;
 814                 }
 815
 816                 DEBUG(10,("domain_sequence_number: failed to get LDAP "
 817                           "sequence number for domain %s\n",
 818                           domain->name ));
 819         }
 820 #endif /* HAVE_LDAP */
 821
 822         status = cm_connect_sam(domain, tmp_ctx, false, &samr_pipe, &dom_pol);
 823         if (!NT_STATUS_IS_OK(status)) {
 824                 goto done;
 825         }
 826
 827         status = rpc_sequence_number(tmp_ctx,
 828                                      samr_pipe,
 829                                      &dom_pol,
 830                                      domain->name,
 831                                      &seq);
 832         if (!NT_STATUS_IS_OK(status)) {
 833                 goto done;
 834         }
 835
 836         if (pseq) {
 837                 *pseq = seq;
 838         }
 839
 840 done:
 841         TALLOC_FREE(tmp_ctx);
 842         return status;
 843 }
 844
 845 /* get a list of trusted domains */
 846 static NTSTATUS msrpc_trusted_domains(struct winbindd_domain *domain,
 847                                       TALLOC_CTX *mem_ctx,
 848                                       struct netr_DomainTrustList *ptrust_list)
 849 {
 850         struct rpc_pipe_client *lsa_pipe;
 851         struct policy_handle lsa_policy;
 852         struct netr_DomainTrust *trusts = NULL;
 853         uint32_t num_trusts = 0;
 854         TALLOC_CTX *tmp_ctx;
 855         NTSTATUS status;
 856
 857         DEBUG(3,("msrpc_trusted_domains\n"));
 858
 859         if (ptrust_list) {
 860                 ZERO_STRUCTP(ptrust_list);
 861         }
 862
 863         tmp_ctx = talloc_stackframe();
 864         if (tmp_ctx == NULL) {
 865                 return NT_STATUS_NO_MEMORY;
 866         }
 867
 868         status = cm_connect_lsa(domain, tmp_ctx, &lsa_pipe, &lsa_policy);
 869         if (!NT_STATUS_IS_OK(status)) {
 870                 goto done;
 871         }
 872
 873         status = rpc_trusted_domains(tmp_ctx,
 874                                      lsa_pipe,
 875                                      &lsa_policy,
 876                                      &num_trusts,
 877                                      &trusts);
 878         if (!NT_STATUS_IS_OK(status)) {
 879                 goto done;
 880         }
 881
 882         if (ptrust_list) {
 883                 ptrust_list->count = num_trusts;
 884                 ptrust_list->array = talloc_move(mem_ctx, &trusts);
 885         }
 886
 887 done:
 888         TALLOC_FREE(tmp_ctx);
 889         return status;
 890 }
 891
 892 /* find the lockout policy for a domain */
 893 static NTSTATUS msrpc_lockout_policy(struct winbindd_domain *domain,
 894                                      TALLOC_CTX *mem_ctx,
 895                                      struct samr_DomInfo12 *lockout_policy)
 896 {
 897         NTSTATUS status, result;
 898         struct rpc_pipe_client *cli;
 899         struct policy_handle dom_pol;
 900         union samr_DomainInfo *info = NULL;
 901         struct dcerpc_binding_handle *b;
 902
 903         DEBUG(3, ("msrpc_lockout_policy: fetch lockout policy for %s\n", domain->name));
 904
 905         if ( !winbindd_can_contact_domain( domain ) ) {
 906                 DEBUG(10,("msrpc_lockout_policy: No incoming trust for domain %s\n",
 907                           domain->name));
 908                 return NT_STATUS_NOT_SUPPORTED;
 909         }
 910
 911         status = cm_connect_sam(domain, mem_ctx, false, &cli, &dom_pol);
 912         if (!NT_STATUS_IS_OK(status)) {
 913                 goto done;
 914         }
 915
 916         b = cli->binding_handle;
 917
 918         status = dcerpc_samr_QueryDomainInfo(b, mem_ctx,
 919                                              &dom_pol,
 920                                              DomainLockoutInformation,
 921                                              &info,
 922                                              &result);
 923         if (any_nt_status_not_ok(status, result, &status)) {
 924                 return status;
 925         }
 926
 927         *lockout_policy = info->info12;
 928
 929         DEBUG(10,("msrpc_lockout_policy: lockout_threshold %d\n",
 930                 info->info12.lockout_threshold));
 931
 932   done:
 933
 934         return status;
 935 }
 936
 937 /* find the password policy for a domain */
 938 static NTSTATUS msrpc_password_policy(struct winbindd_domain *domain,
 939                                       TALLOC_CTX *mem_ctx,
 940                                       struct samr_DomInfo1 *password_policy)
 941 {
 942         NTSTATUS status, result;
 943         struct rpc_pipe_client *cli;
 944         struct policy_handle dom_pol;
 945         union samr_DomainInfo *info = NULL;
 946         struct dcerpc_binding_handle *b;
 947
 948         DEBUG(3, ("msrpc_password_policy: fetch password policy for %s\n",
 949                   domain->name));
 950
 951         if ( !winbindd_can_contact_domain( domain ) ) {
 952                 DEBUG(10,("msrpc_password_policy: No incoming trust for domain %s\n",
 953                           domain->name));
 954                 return NT_STATUS_NOT_SUPPORTED;
 955         }
 956
 957         status = cm_connect_sam(domain, mem_ctx, false, &cli, &dom_pol);
 958         if (!NT_STATUS_IS_OK(status)) {
 959                 goto done;
 960         }
 961
 962         b = cli->binding_handle;
 963
 964         status = dcerpc_samr_QueryDomainInfo(b, mem_ctx,
 965                                              &dom_pol,
 966                                              DomainPasswordInformation,
 967                                              &info,
 968                                              &result);
 969         if (!NT_STATUS_IS_OK(status)) {
 970                 goto done;
 971         }
 972         if (!NT_STATUS_IS_OK(result)) {
 973                 goto done;
 974         }
 975
 976         *password_policy = info->info1;
 977
 978         DEBUG(10,("msrpc_password_policy: min_length_password %d\n",
 979                 info->info1.min_password_length));
 980
 981   done:
 982
 983         return status;
 984 }
 985
 986 NTSTATUS winbindd_lookup_sids(TALLOC_CTX *mem_ctx,
 987                               struct winbindd_domain *domain,
 988                               uint32_t num_sids,
 989                               const struct dom_sid *sids,
 990                               char ***domains,
 991                               char ***names,
 992                               enum lsa_SidType **types)
 993 {
 994         NTSTATUS status;
 995         NTSTATUS result;
 996         struct rpc_pipe_client *cli = NULL;
 997         struct dcerpc_binding_handle *b = NULL;
 998         struct policy_handle lsa_policy;
 999         unsigned int orig_timeout;
1000         bool use_lookupsids3 = false;
1001         bool retried = false;
1002         enum lsa_LookupNamesLevel level = LSA_LOOKUP_NAMES_ALL;
1003
1004  connect:
1005         status = cm_connect_lsat(domain, mem_ctx, &cli, &lsa_policy);
1006         if (!NT_STATUS_IS_OK(status)) {
1007                 return status;
1008         }
1009
1010         b = cli->binding_handle;
1011
1012         if (cli->transport->transport == NCACN_IP_TCP) {
1013                 use_lookupsids3 = true;
1014         }
1015
1016         /*
1017          * This call can take a long time
1018          * allow the server to time out.
1019          * 35 seconds should do it.
1020          */
1021         orig_timeout = dcerpc_binding_handle_set_timeout(b, 35000);
1022
1023         status = dcerpc_lsa_lookup_sids_generic(b,
1024                                                 mem_ctx,
1025                                                 &lsa_policy,
1026                                                 num_sids,
1027                                                 sids,
1028                                                 level,
1029                                                 domains,
1030                                                 names,
1031                                                 types,
1032                                                 use_lookupsids3,
1033                                                 &result);
1034
1035         /* And restore our original timeout. */
1036         dcerpc_binding_handle_set_timeout(b, orig_timeout);
1037
1038         if (NT_STATUS_EQUAL(status, NT_STATUS_ACCESS_DENIED) ||
1039             NT_STATUS_EQUAL(status, NT_STATUS_RPC_SEC_PKG_ERROR) ||
1040             NT_STATUS_EQUAL(status, NT_STATUS_NETWORK_ACCESS_DENIED)) {
1041                 /*
1042                  * This can happen if the schannel key is not
1043                  * valid anymore, we need to invalidate the
1044                  * all connections to the dc and reestablish
1045                  * a netlogon connection first.
1046                  */
1047                 invalidate_cm_connection(domain);
1048                 domain->can_do_ncacn_ip_tcp = domain->active_directory;
1049                 if (!retried) {
1050                         retried = true;
1051                         goto connect;
1052                 }
1053                 status = NT_STATUS_ACCESS_DENIED;
1054         }
1055
1056         if (any_nt_status_not_ok(status, result, &status)) {
1057                 return status;
1058         }
1059
1060         return NT_STATUS_OK;
1061 }
1062
1063 static NTSTATUS winbindd_lookup_names(TALLOC_CTX *mem_ctx,
1064                                       struct winbindd_domain *domain,
1065                                       uint32_t num_names,
1066                                       const char **names,
1067                                       const char ***domains,
1068                                       struct dom_sid **sids,
1069                                       enum lsa_SidType **types)
1070 {
1071         NTSTATUS status;
1072         NTSTATUS result;
1073         struct rpc_pipe_client *cli = NULL;
1074         struct dcerpc_binding_handle *b = NULL;
1075         struct policy_handle lsa_policy;
1076         unsigned int orig_timeout = 0;
1077         bool use_lookupnames4 = false;
1078         bool retried = false;
1079
1080  connect:
1081         status = cm_connect_lsat(domain, mem_ctx, &cli, &lsa_policy);
1082         if (!NT_STATUS_IS_OK(status)) {
1083                 return status;
1084         }
1085
1086         b = cli->binding_handle;
1087
1088         if (cli->transport->transport == NCACN_IP_TCP) {
1089                 use_lookupnames4 = true;
1090         }
1091
1092         /*
1093          * This call can take a long time
1094          * allow the server to time out.
1095          * 35 seconds should do it.
1096          */
1097         orig_timeout = dcerpc_binding_handle_set_timeout(b, 35000);
1098
1099         status = dcerpc_lsa_lookup_names_generic(b,
1100                                                  mem_ctx,
1101                                                  &lsa_policy,
1102                                                  num_names,
1103                                                  (const char **) names,
1104                                                  domains,
1105                                                  1,
1106                                                  sids,
1107                                                  types,
1108                                                  use_lookupnames4,
1109                                                  &result);
1110
1111         /* And restore our original timeout. */
1112         dcerpc_binding_handle_set_timeout(b, orig_timeout);
1113
1114         if (NT_STATUS_EQUAL(status, NT_STATUS_ACCESS_DENIED) ||
1115             NT_STATUS_EQUAL(status, NT_STATUS_RPC_SEC_PKG_ERROR) ||
1116             NT_STATUS_EQUAL(status, NT_STATUS_NETWORK_ACCESS_DENIED)) {
1117                 /*
1118                  * This can happen if the schannel key is not
1119                  * valid anymore, we need to invalidate the
1120                  * all connections to the dc and reestablish
1121                  * a netlogon connection first.
1122                  */
1123                 invalidate_cm_connection(domain);
1124                 if (!retried) {
1125                         retried = true;
1126                         goto connect;
1127                 }
1128                 status = NT_STATUS_ACCESS_DENIED;
1129         }
1130
1131         if (any_nt_status_not_ok(status, result, &status)) {
1132                 return status;
1133         }
1134
1135         return NT_STATUS_OK;
1136 }
1137
1138 /* the rpc backend methods are exposed via this structure */
1139 struct winbindd_methods msrpc_methods = {
1140         False,
1141         msrpc_query_user_list,
1142         msrpc_enum_dom_groups,
1143         msrpc_enum_local_groups,
1144         msrpc_name_to_sid,
1145         msrpc_sid_to_name,
1146         msrpc_rids_to_names,
1147         msrpc_lookup_usergroups,
1148         msrpc_lookup_useraliases,
1149         msrpc_lookup_groupmem,
1150         msrpc_sequence_number,
1151         msrpc_lockout_policy,
1152         msrpc_password_policy,
1153         msrpc_trusted_domains,
1154 };