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/cli_samr.h"
  30 #include "rpc_client/cli_samr.h"
  31 #include "../librpc/gen_ndr/cli_lsa.h"
  32 #include "rpc_client/cli_lsarpc.h"
  33 #include "../libcli/security/security.h"
  34
  35 #undef DBGC_CLASS
  36 #define DBGC_CLASS DBGC_WINBIND
  37
  38
  39 /* Query display info for a domain.  This returns enough information plus a
  40    bit extra to give an overview of domain users for the User Manager
  41    application. */
  42 static NTSTATUS msrpc_query_user_list(struct winbindd_domain *domain,
  43                                       TALLOC_CTX *mem_ctx,
  44                                       uint32_t *pnum_info,
  45                                       struct wbint_userinfo **pinfo)
  46 {
  47         struct rpc_pipe_client *samr_pipe = NULL;
  48         struct policy_handle dom_pol;
  49         struct wbint_userinfo *info = NULL;
  50         uint32_t num_info = 0;
  51         TALLOC_CTX *tmp_ctx;
  52         NTSTATUS status;
  53
  54         DEBUG(3, ("msrpc_query_user_list\n"));
  55
  56         if (pnum_info) {
  57                 *pnum_info = 0;
  58         }
  59
  60         tmp_ctx = talloc_stackframe();
  61         if (tmp_ctx == NULL) {
  62                 return NT_STATUS_NO_MEMORY;
  63         }
  64
  65         if ( !winbindd_can_contact_domain( domain ) ) {
  66                 DEBUG(10,("query_user_list: No incoming trust for domain %s\n",
  67                           domain->name));
  68                 status = NT_STATUS_OK;
  69                 goto done;
  70         }
  71
  72         status = cm_connect_sam(domain, tmp_ctx, &samr_pipe, &dom_pol);
  73         if (!NT_STATUS_IS_OK(status)) {
  74                 goto done;
  75         }
  76
  77         status = rpc_query_user_list(tmp_ctx,
  78                                      samr_pipe,
  79                                      &dom_pol,
  80                                      &domain->sid,
  81                                      &num_info,
  82                                      &info);
  83         if (!NT_STATUS_IS_OK(status)) {
  84                 goto done;
  85         }
  86
  87         if (pnum_info) {
  88                 *pnum_info = num_info;
  89         }
  90
  91         if (pinfo) {
  92                 *pinfo = talloc_move(mem_ctx, &info);
  93         }
  94
  95 done:
  96         TALLOC_FREE(tmp_ctx);
  97         return status;
  98 }
  99
 100 /* list all domain groups */
 101 static NTSTATUS msrpc_enum_dom_groups(struct winbindd_domain *domain,
 102                                       TALLOC_CTX *mem_ctx,
 103                                       uint32_t *pnum_info,
 104                                       struct acct_info **pinfo)
 105 {
 106         struct rpc_pipe_client *samr_pipe;
 107         struct policy_handle dom_pol;
 108         struct acct_info *info = NULL;
 109         uint32_t num_info = 0;
 110         TALLOC_CTX *tmp_ctx;
 111         NTSTATUS status;
 112
 113         DEBUG(3,("msrpc_enum_dom_groups\n"));
 114
 115         if (pnum_info) {
 116                 *pnum_info = 0;
 117         }
 118
 119         tmp_ctx = talloc_stackframe();
 120         if (tmp_ctx == NULL) {
 121                 return NT_STATUS_NO_MEMORY;
 122         }
 123
 124         if ( !winbindd_can_contact_domain( domain ) ) {
 125                 DEBUG(10,("enum_domain_groups: No incoming trust for domain %s\n",
 126                           domain->name));
 127                 status = NT_STATUS_OK;
 128                 goto done;
 129         }
 130
 131         status = cm_connect_sam(domain, tmp_ctx, &samr_pipe, &dom_pol);
 132         if (!NT_STATUS_IS_OK(status)) {
 133                 goto done;
 134         }
 135
 136         status = rpc_enum_dom_groups(tmp_ctx,
 137                                      samr_pipe,
 138                                      &dom_pol,
 139                                      &num_info,
 140                                      &info);
 141         if (!NT_STATUS_IS_OK(status)) {
 142                 goto done;
 143         }
 144
 145         if (pnum_info) {
 146                 *pnum_info = num_info;
 147         }
 148
 149         if (pinfo) {
 150                 *pinfo = talloc_move(mem_ctx, &info);
 151         }
 152
 153 done:
 154         TALLOC_FREE(tmp_ctx);
 155         return status;
 156 }
 157
 158 /* List all domain groups */
 159
 160 static NTSTATUS msrpc_enum_local_groups(struct winbindd_domain *domain,
 161                                         TALLOC_CTX *mem_ctx,
 162                                         uint32_t *pnum_info,
 163                                         struct acct_info **pinfo)
 164 {
 165         struct rpc_pipe_client *samr_pipe;
 166         struct policy_handle dom_pol;
 167         struct acct_info *info = NULL;
 168         uint32_t num_info = 0;
 169         TALLOC_CTX *tmp_ctx;
 170         NTSTATUS status;
 171
 172         DEBUG(3,("msrpc_enum_local_groups\n"));
 173
 174         if (pnum_info) {
 175                 *pnum_info = 0;
 176         }
 177
 178         tmp_ctx = talloc_stackframe();
 179         if (tmp_ctx == NULL) {
 180                 return NT_STATUS_NO_MEMORY;
 181         }
 182
 183         if ( !winbindd_can_contact_domain( domain ) ) {
 184                 DEBUG(10,("enum_local_groups: No incoming trust for domain %s\n",
 185                           domain->name));
 186                 status = NT_STATUS_OK;
 187                 goto done;
 188         }
 189
 190         status = cm_connect_sam(domain, tmp_ctx, &samr_pipe, &dom_pol);
 191         if (!NT_STATUS_IS_OK(status)) {
 192                 goto done;
 193         }
 194
 195         status = rpc_enum_local_groups(mem_ctx,
 196                                        samr_pipe,
 197                                        &dom_pol,
 198                                        &num_info,
 199                                        &info);
 200         if (!NT_STATUS_IS_OK(status)) {
 201                 goto done;
 202         }
 203
 204         if (pnum_info) {
 205                 *pnum_info = num_info;
 206         }
 207
 208         if (pinfo) {
 209                 *pinfo = talloc_move(mem_ctx, &info);
 210         }
 211
 212 done:
 213         TALLOC_FREE(tmp_ctx);
 214         return status;
 215 }
 216
 217 /* convert a single name to a sid in a domain */
 218 static NTSTATUS msrpc_name_to_sid(struct winbindd_domain *domain,
 219                                   TALLOC_CTX *mem_ctx,
 220                                   const char *domain_name,
 221                                   const char *name,
 222                                   uint32_t flags,
 223                                   struct dom_sid *sid,
 224                                   enum lsa_SidType *type)
 225 {
 226         NTSTATUS result;
 227         struct dom_sid *sids = NULL;
 228         enum lsa_SidType *types = NULL;
 229         char *full_name = NULL;
 230         NTSTATUS name_map_status = NT_STATUS_UNSUCCESSFUL;
 231         char *mapped_name = NULL;
 232
 233         if (name == NULL || *name=='\0') {
 234                 full_name = talloc_asprintf(mem_ctx, "%s", domain_name);
 235         } else if (domain_name == NULL || *domain_name == '\0') {
 236                 full_name = talloc_asprintf(mem_ctx, "%s", name);
 237         } else {
 238                 full_name = talloc_asprintf(mem_ctx, "%s\\%s", domain_name, name);
 239         }
 240         if (!full_name) {
 241                 DEBUG(0, ("talloc_asprintf failed!\n"));
 242                 return NT_STATUS_NO_MEMORY;
 243         }
 244
 245         DEBUG(3, ("msrpc_name_to_sid: name=%s\n", full_name));
 246
 247         name_map_status = normalize_name_unmap(mem_ctx, full_name,
 248                                                &mapped_name);
 249
 250         /* Reset the full_name pointer if we mapped anytthing */
 251
 252         if (NT_STATUS_IS_OK(name_map_status) ||
 253             NT_STATUS_EQUAL(name_map_status, NT_STATUS_FILE_RENAMED))
 254         {
 255                 full_name = mapped_name;
 256         }
 257
 258         DEBUG(3,("name_to_sid [rpc] %s for domain %s\n",
 259                  full_name?full_name:"", domain_name ));
 260
 261         result = winbindd_lookup_names(mem_ctx, domain, 1,
 262                                        (const char **)&full_name, NULL,
 263                                        &sids, &types);
 264         if (!NT_STATUS_IS_OK(result))
 265                 return result;
 266
 267         /* Return rid and type if lookup successful */
 268
 269         sid_copy(sid, &sids[0]);
 270         *type = types[0];
 271
 272         return NT_STATUS_OK;
 273 }
 274
 275 /*
 276   convert a domain SID to a user or group name
 277 */
 278 static NTSTATUS msrpc_sid_to_name(struct winbindd_domain *domain,
 279                                   TALLOC_CTX *mem_ctx,
 280                                   const struct dom_sid *sid,
 281                                   char **domain_name,
 282                                   char **name,
 283                                   enum lsa_SidType *type)
 284 {
 285         char **domains;
 286         char **names;
 287         enum lsa_SidType *types = NULL;
 288         NTSTATUS result;
 289         NTSTATUS name_map_status = NT_STATUS_UNSUCCESSFUL;
 290         char *mapped_name = NULL;
 291
 292         DEBUG(3, ("msrpc_sid_to_name: %s for domain %s\n", sid_string_dbg(sid),
 293                  domain->name ));
 294
 295         result = winbindd_lookup_sids(mem_ctx,
 296                                       domain,
 297                                       1,
 298                                       sid,
 299                                       &domains,
 300                                       &names,
 301                                       &types);
 302         if (!NT_STATUS_IS_OK(result)) {
 303                 DEBUG(2,("msrpc_sid_to_name: failed to lookup sids: %s\n",
 304                         nt_errstr(result)));
 305                 return result;
 306         }
 307
 308
 309         *type = (enum lsa_SidType)types[0];
 310         *domain_name = domains[0];
 311         *name = names[0];
 312
 313         DEBUG(5,("Mapped sid to [%s]\\[%s]\n", domains[0], *name));
 314
 315         name_map_status = normalize_name_map(mem_ctx, domain, *name,
 316                                              &mapped_name);
 317         if (NT_STATUS_IS_OK(name_map_status) ||
 318             NT_STATUS_EQUAL(name_map_status, NT_STATUS_FILE_RENAMED))
 319         {
 320                 *name = mapped_name;
 321                 DEBUG(5,("returning mapped name -- %s\n", *name));
 322         }
 323
 324         return NT_STATUS_OK;
 325 }
 326
 327 static NTSTATUS msrpc_rids_to_names(struct winbindd_domain *domain,
 328                                     TALLOC_CTX *mem_ctx,
 329                                     const struct dom_sid *sid,
 330                                     uint32 *rids,
 331                                     size_t num_rids,
 332                                     char **domain_name,
 333                                     char ***names,
 334                                     enum lsa_SidType **types)
 335 {
 336         char **domains;
 337         NTSTATUS result;
 338         struct dom_sid *sids;
 339         size_t i;
 340         char **ret_names;
 341
 342         DEBUG(3, ("msrpc_rids_to_names: domain %s\n", domain->name ));
 343
 344         if (num_rids) {
 345                 sids = TALLOC_ARRAY(mem_ctx, struct dom_sid, num_rids);
 346                 if (sids == NULL) {
 347                         return NT_STATUS_NO_MEMORY;
 348                 }
 349         } else {
 350                 sids = NULL;
 351         }
 352
 353         for (i=0; i<num_rids; i++) {
 354                 if (!sid_compose(&sids[i], sid, rids[i])) {
 355                         return NT_STATUS_INTERNAL_ERROR;
 356                 }
 357         }
 358
 359         result = winbindd_lookup_sids(mem_ctx,
 360                                       domain,
 361                                       num_rids,
 362                                       sids,
 363                                       &domains,
 364                                       names,
 365                                       types);
 366
 367         if (!NT_STATUS_IS_OK(result) &&
 368             !NT_STATUS_EQUAL(result, STATUS_SOME_UNMAPPED)) {
 369                 return result;
 370         }
 371
 372         ret_names = *names;
 373         for (i=0; i<num_rids; i++) {
 374                 NTSTATUS name_map_status = NT_STATUS_UNSUCCESSFUL;
 375                 char *mapped_name = NULL;
 376
 377                 if ((*types)[i] != SID_NAME_UNKNOWN) {
 378                         name_map_status = normalize_name_map(mem_ctx,
 379                                                              domain,
 380                                                              ret_names[i],
 381                                                              &mapped_name);
 382                         if (NT_STATUS_IS_OK(name_map_status) ||
 383                             NT_STATUS_EQUAL(name_map_status, NT_STATUS_FILE_RENAMED))
 384                         {
 385                                 ret_names[i] = mapped_name;
 386                         }
 387
 388                         *domain_name = domains[i];
 389                 }
 390         }
 391
 392         return result;
 393 }
 394
 395 /* Lookup user information from a rid or username. */
 396 static NTSTATUS msrpc_query_user(struct winbindd_domain *domain,
 397                            TALLOC_CTX *mem_ctx,
 398                            const struct dom_sid *user_sid,
 399                            struct wbint_userinfo *user_info)
 400 {
 401         struct rpc_pipe_client *samr_pipe;
 402         struct policy_handle dom_pol;
 403         struct netr_SamInfo3 *user;
 404         TALLOC_CTX *tmp_ctx;
 405         NTSTATUS status;
 406
 407         DEBUG(3,("msrpc_query_user sid=%s\n", sid_string_dbg(user_sid)));
 408
 409         tmp_ctx = talloc_stackframe();
 410         if (tmp_ctx == NULL) {
 411                 return NT_STATUS_NO_MEMORY;
 412         }
 413
 414         if (user_info) {
 415                 user_info->homedir = NULL;
 416                 user_info->shell = NULL;
 417                 user_info->primary_gid = (gid_t)-1;
 418         }
 419
 420         /* try netsamlogon cache first */
 421         user = netsamlogon_cache_get(tmp_ctx, user_sid);
 422         if (user != NULL) {
 423                 DEBUG(5,("msrpc_query_user: Cache lookup succeeded for %s\n",
 424                         sid_string_dbg(user_sid)));
 425
 426                 sid_compose(&user_info->user_sid, &domain->sid, user->base.rid);
 427                 sid_compose(&user_info->group_sid, &domain->sid,
 428                             user->base.primary_gid);
 429
 430                 user_info->acct_name = talloc_strdup(user_info,
 431                                                      user->base.account_name.string);
 432                 user_info->full_name = talloc_strdup(user_info,
 433                                                      user->base.full_name.string);
 434
 435                 status = NT_STATUS_OK;
 436                 goto done;
 437         }
 438
 439         if ( !winbindd_can_contact_domain( domain ) ) {
 440                 DEBUG(10,("query_user: No incoming trust for domain %s\n",
 441                           domain->name));
 442                 /* Tell the cache manager not to remember this one */
 443                 status = NT_STATUS_SYNCHRONIZATION_REQUIRED;
 444                 goto done;
 445         }
 446
 447         /* no cache; hit the wire */
 448         status = cm_connect_sam(domain, tmp_ctx, &samr_pipe, &dom_pol);
 449         if (!NT_STATUS_IS_OK(status)) {
 450                 goto done;
 451         }
 452
 453         status = rpc_query_user(tmp_ctx,
 454                                 samr_pipe,
 455                                 &dom_pol,
 456                                 &domain->sid,
 457                                 user_sid,
 458                                 user_info);
 459
 460 done:
 461         TALLOC_FREE(tmp_ctx);
 462         return status;
 463 }
 464
 465 /* Lookup groups a user is a member of.  I wish Unix had a call like this! */
 466 static NTSTATUS msrpc_lookup_usergroups(struct winbindd_domain *domain,
 467                                         TALLOC_CTX *mem_ctx,
 468                                         const struct dom_sid *user_sid,
 469                                         uint32_t *pnum_groups,
 470                                         struct dom_sid **puser_grpsids)
 471 {
 472         struct rpc_pipe_client *samr_pipe;
 473         struct policy_handle dom_pol;
 474         struct dom_sid *user_grpsids = NULL;
 475         uint32_t num_groups = 0;
 476         TALLOC_CTX *tmp_ctx;
 477         NTSTATUS status;
 478
 479         DEBUG(3,("msrpc_lookup_usergroups sid=%s\n", sid_string_dbg(user_sid)));
 480
 481         *pnum_groups = 0;
 482
 483         tmp_ctx = talloc_stackframe();
 484         if (tmp_ctx == NULL) {
 485                 return NT_STATUS_NO_MEMORY;
 486         }
 487
 488         /* Check if we have a cached user_info_3 */
 489         status = lookup_usergroups_cached(domain,
 490                                           tmp_ctx,
 491                                           user_sid,
 492                                           &num_groups,
 493                                           &user_grpsids);
 494         if (NT_STATUS_IS_OK(status)) {
 495                 goto cached;
 496         }
 497
 498         if ( !winbindd_can_contact_domain( domain ) ) {
 499                 DEBUG(10,("lookup_usergroups: No incoming trust for domain %s\n",
 500                           domain->name));
 501
 502                 /* Tell the cache manager not to remember this one */
 503                 status = NT_STATUS_SYNCHRONIZATION_REQUIRED;
 504                 goto done;
 505         }
 506
 507         /* no cache; hit the wire */
 508         status = cm_connect_sam(domain, tmp_ctx, &samr_pipe, &dom_pol);
 509         if (!NT_STATUS_IS_OK(status)) {
 510                 goto done;
 511         }
 512
 513         status = rpc_lookup_usergroups(tmp_ctx,
 514                                        samr_pipe,
 515                                        &dom_pol,
 516                                        &domain->sid,
 517                                        user_sid,
 518                                        &num_groups,
 519                                        &user_grpsids);
 520         if (!NT_STATUS_IS_OK(status)) {
 521                 goto done;
 522         }
 523
 524 cached:
 525         if (pnum_groups) {
 526                 *pnum_groups = num_groups;
 527         }
 528
 529         if (puser_grpsids) {
 530                 *puser_grpsids = talloc_move(mem_ctx, &user_grpsids);
 531         }
 532
 533 done:
 534         TALLOC_FREE(tmp_ctx);
 535         return status;
 536         return NT_STATUS_OK;
 537 }
 538
 539 #define MAX_SAM_ENTRIES_W2K 0x400 /* 1024 */
 540
 541 static NTSTATUS msrpc_lookup_useraliases(struct winbindd_domain *domain,
 542                                          TALLOC_CTX *mem_ctx,
 543                                          uint32 num_sids, const struct dom_sid *sids,
 544                                          uint32 *pnum_aliases,
 545                                          uint32 **palias_rids)
 546 {
 547         struct rpc_pipe_client *samr_pipe;
 548         struct policy_handle dom_pol;
 549         uint32_t num_aliases = 0;
 550         uint32_t *alias_rids = NULL;
 551         TALLOC_CTX *tmp_ctx;
 552         NTSTATUS status;
 553
 554         DEBUG(3,("msrpc_lookup_useraliases\n"));
 555
 556         if (pnum_aliases) {
 557                 *pnum_aliases = 0;
 558         }
 559
 560         tmp_ctx = talloc_stackframe();
 561         if (tmp_ctx == NULL) {
 562                 return NT_STATUS_NO_MEMORY;
 563         }
 564
 565         if (!winbindd_can_contact_domain(domain)) {
 566                 DEBUG(10,("msrpc_lookup_useraliases: No incoming trust for domain %s\n",
 567                           domain->name));
 568                 /* Tell the cache manager not to remember this one */
 569                 status = NT_STATUS_SYNCHRONIZATION_REQUIRED;
 570                 goto done;
 571         }
 572
 573         status = cm_connect_sam(domain, tmp_ctx, &samr_pipe, &dom_pol);
 574         if (!NT_STATUS_IS_OK(status)) {
 575                 goto done;
 576         }
 577
 578         status = rpc_lookup_useraliases(tmp_ctx,
 579                                         samr_pipe,
 580                                         &dom_pol,
 581                                         num_sids,
 582                                         sids,
 583                                         &num_aliases,
 584                                         &alias_rids);
 585         if (!NT_STATUS_IS_OK(status)) {
 586                 goto done;
 587         }
 588
 589         if (pnum_aliases) {
 590                 *pnum_aliases = num_aliases;
 591         }
 592
 593         if (palias_rids) {
 594                 *palias_rids = talloc_move(mem_ctx, &alias_rids);
 595         }
 596
 597 done:
 598         TALLOC_FREE(tmp_ctx);
 599         return status;
 600 }
 601
 602
 603 /* Lookup group membership given a rid.   */
 604 static NTSTATUS msrpc_lookup_groupmem(struct winbindd_domain *domain,
 605                                       TALLOC_CTX *mem_ctx,
 606                                       const struct dom_sid *group_sid,
 607                                       enum lsa_SidType type,
 608                                       uint32_t *num_names,
 609                                       struct dom_sid **sid_mem,
 610                                       char ***names,
 611                                       uint32_t **name_types)
 612 {
 613         NTSTATUS result = NT_STATUS_UNSUCCESSFUL;
 614         uint32 i, total_names = 0;
 615         struct policy_handle dom_pol, group_pol;
 616         uint32 des_access = SEC_FLAG_MAXIMUM_ALLOWED;
 617         uint32 *rid_mem = NULL;
 618         uint32 group_rid;
 619         unsigned int j, r;
 620         struct rpc_pipe_client *cli;
 621         unsigned int orig_timeout;
 622         struct samr_RidAttrArray *rids = NULL;
 623
 624         DEBUG(3,("msrpc_lookup_groupmem: %s sid=%s\n", domain->name,
 625                   sid_string_dbg(group_sid)));
 626
 627         if ( !winbindd_can_contact_domain( domain ) ) {
 628                 DEBUG(10,("lookup_groupmem: No incoming trust for domain %s\n",
 629                           domain->name));
 630                 return NT_STATUS_OK;
 631         }
 632
 633         if (!sid_peek_check_rid(&domain->sid, group_sid, &group_rid))
 634                 return NT_STATUS_UNSUCCESSFUL;
 635
 636         *num_names = 0;
 637
 638         result = cm_connect_sam(domain, mem_ctx, &cli, &dom_pol);
 639         if (!NT_STATUS_IS_OK(result))
 640                 return result;
 641
 642         result = rpccli_samr_OpenGroup(cli, mem_ctx,
 643                                        &dom_pol,
 644                                        des_access,
 645                                        group_rid,
 646                                        &group_pol);
 647
 648         if (!NT_STATUS_IS_OK(result))
 649                 return result;
 650
 651         /* Step #1: Get a list of user rids that are the members of the
 652            group. */
 653
 654         /* This call can take a long time - allow the server to time out.
 655            35 seconds should do it. */
 656
 657         orig_timeout = rpccli_set_timeout(cli, 35000);
 658
 659         result = rpccli_samr_QueryGroupMember(cli, mem_ctx,
 660                                               &group_pol,
 661                                               &rids);
 662
 663         /* And restore our original timeout. */
 664         rpccli_set_timeout(cli, orig_timeout);
 665
 666         rpccli_samr_Close(cli, mem_ctx, &group_pol);
 667
 668         if (!NT_STATUS_IS_OK(result))
 669                 return result;
 670
 671         if (!rids || !rids->count) {
 672                 names = NULL;
 673                 name_types = NULL;
 674                 sid_mem = NULL;
 675                 return NT_STATUS_OK;
 676         }
 677
 678         *num_names = rids->count;
 679         rid_mem = rids->rids;
 680
 681         /* Step #2: Convert list of rids into list of usernames.  Do this
 682            in bunches of ~1000 to avoid crashing NT4.  It looks like there
 683            is a buffer overflow or something like that lurking around
 684            somewhere. */
 685
 686 #define MAX_LOOKUP_RIDS 900
 687
 688         *names = TALLOC_ZERO_ARRAY(mem_ctx, char *, *num_names);
 689         *name_types = TALLOC_ZERO_ARRAY(mem_ctx, uint32, *num_names);
 690         *sid_mem = TALLOC_ZERO_ARRAY(mem_ctx, struct dom_sid, *num_names);
 691
 692         for (j=0;j<(*num_names);j++)
 693                 sid_compose(&(*sid_mem)[j], &domain->sid, rid_mem[j]);
 694
 695         if (*num_names>0 && (!*names || !*name_types))
 696                 return NT_STATUS_NO_MEMORY;
 697
 698         for (i = 0; i < *num_names; i += MAX_LOOKUP_RIDS) {
 699                 int num_lookup_rids = MIN(*num_names - i, MAX_LOOKUP_RIDS);
 700                 struct lsa_Strings tmp_names;
 701                 struct samr_Ids tmp_types;
 702
 703                 /* Lookup a chunk of rids */
 704
 705                 result = rpccli_samr_LookupRids(cli, mem_ctx,
 706                                                 &dom_pol,
 707                                                 num_lookup_rids,
 708                                                 &rid_mem[i],
 709                                                 &tmp_names,
 710                                                 &tmp_types);
 711
 712                 /* see if we have a real error (and yes the
 713                    STATUS_SOME_UNMAPPED is the one returned from 2k) */
 714
 715                 if (!NT_STATUS_IS_OK(result) &&
 716                     !NT_STATUS_EQUAL(result, STATUS_SOME_UNMAPPED))
 717                         return result;
 718
 719                 /* Copy result into array.  The talloc system will take
 720                    care of freeing the temporary arrays later on. */
 721
 722                 if (tmp_names.count != tmp_types.count) {
 723                         return NT_STATUS_UNSUCCESSFUL;
 724                 }
 725
 726                 for (r=0; r<tmp_names.count; r++) {
 727                         if (tmp_types.ids[r] == SID_NAME_UNKNOWN) {
 728                                 continue;
 729                         }
 730                         (*names)[total_names] = fill_domain_username_talloc(
 731                                 mem_ctx, domain->name,
 732                                 tmp_names.names[r].string, true);
 733                         (*name_types)[total_names] = tmp_types.ids[r];
 734                         total_names += 1;
 735                 }
 736         }
 737
 738         *num_names = total_names;
 739
 740         return NT_STATUS_OK;
 741 }
 742
 743 #ifdef HAVE_LDAP
 744
 745 #include <ldap.h>
 746
 747 static int get_ldap_seq(const char *server, int port, uint32 *seq)
 748 {
 749         int ret = -1;
 750         struct timeval to;
 751         const char *attrs[] = {"highestCommittedUSN", NULL};
 752         LDAPMessage *res = NULL;
 753         char **values = NULL;
 754         LDAP *ldp = NULL;
 755
 756         *seq = DOM_SEQUENCE_NONE;
 757
 758         /*
 759          * Parameterised (5) second timeout on open. This is needed as the
 760          * search timeout doesn't seem to apply to doing an open as well. JRA.
 761          */
 762
 763         ldp = ldap_open_with_timeout(server, port, lp_ldap_timeout());
 764         if (ldp == NULL)
 765                 return -1;
 766
 767         /* Timeout if no response within 20 seconds. */
 768         to.tv_sec = 10;
 769         to.tv_usec = 0;
 770
 771         if (ldap_search_st(ldp, "", LDAP_SCOPE_BASE, "(objectclass=*)",
 772                            CONST_DISCARD(char **, attrs), 0, &to, &res))
 773                 goto done;
 774
 775         if (ldap_count_entries(ldp, res) != 1)
 776                 goto done;
 777
 778         values = ldap_get_values(ldp, res, "highestCommittedUSN");
 779         if (!values || !values[0])
 780                 goto done;
 781
 782         *seq = atoi(values[0]);
 783         ret = 0;
 784
 785   done:
 786
 787         if (values)
 788                 ldap_value_free(values);
 789         if (res)
 790                 ldap_msgfree(res);
 791         if (ldp)
 792                 ldap_unbind(ldp);
 793         return ret;
 794 }
 795
 796 /**********************************************************************
 797  Get the sequence number for a Windows AD native mode domain using
 798  LDAP queries.
 799 **********************************************************************/
 800
 801 static int get_ldap_sequence_number(struct winbindd_domain *domain, uint32 *seq)
 802 {
 803         int ret = -1;
 804         char addr[INET6_ADDRSTRLEN];
 805
 806         print_sockaddr(addr, sizeof(addr), &domain->dcaddr);
 807         if ((ret = get_ldap_seq(addr, LDAP_PORT, seq)) == 0) {
 808                 DEBUG(3, ("get_ldap_sequence_number: Retrieved sequence "
 809                           "number for Domain (%s) from DC (%s)\n",
 810                         domain->name, addr));
 811         }
 812         return ret;
 813 }
 814
 815 #endif /* HAVE_LDAP */
 816
 817 /* find the sequence number for a domain */
 818 static NTSTATUS msrpc_sequence_number(struct winbindd_domain *domain,
 819                                       uint32_t *pseq)
 820 {
 821         struct rpc_pipe_client *samr_pipe;
 822         struct policy_handle dom_pol;
 823         uint32_t seq;
 824         TALLOC_CTX *tmp_ctx;
 825         NTSTATUS status;
 826
 827         DEBUG(3, ("msrpc_sequence_number: fetch sequence_number for %s\n", domain->name));
 828
 829         if (pseq) {
 830                 *pseq = DOM_SEQUENCE_NONE;
 831         }
 832
 833         tmp_ctx = talloc_stackframe();
 834         if (tmp_ctx == NULL) {
 835                 return NT_STATUS_NO_MEMORY;
 836         }
 837
 838         if ( !winbindd_can_contact_domain( domain ) ) {
 839                 DEBUG(10,("sequence_number: No incoming trust for domain %s\n",
 840                           domain->name));
 841                 if (pseq) {
 842                         *pseq = time(NULL);
 843                 }
 844                 status = NT_STATUS_OK;
 845                 goto done;
 846         }
 847
 848 #ifdef HAVE_LDAP
 849         if (domain->active_directory) {
 850                 int rc;
 851
 852                 DEBUG(8,("using get_ldap_seq() to retrieve the "
 853                          "sequence number\n"));
 854
 855                 rc =  get_ldap_sequence_number(domain, &seq);
 856                 if (rc == 0) {
 857                         DEBUG(10,("domain_sequence_number: LDAP for "
 858                                   "domain %s is %u\n",
 859                                   domain->name, seq));
 860
 861                         if (pseq) {
 862                                 *pseq = seq;
 863                         }
 864
 865                         status = NT_STATUS_OK;
 866                         goto done;
 867                 }
 868
 869                 DEBUG(10,("domain_sequence_number: failed to get LDAP "
 870                           "sequence number for domain %s\n",
 871                           domain->name ));
 872         }
 873 #endif /* HAVE_LDAP */
 874
 875         status = cm_connect_sam(domain, tmp_ctx, &samr_pipe, &dom_pol);
 876         if (!NT_STATUS_IS_OK(status)) {
 877                 goto done;
 878         }
 879
 880         status = rpc_sequence_number(tmp_ctx,
 881                                      samr_pipe,
 882                                      &dom_pol,
 883                                      domain->name,
 884                                      &seq);
 885         if (!NT_STATUS_IS_OK(status)) {
 886                 goto done;
 887         }
 888
 889         if (pseq) {
 890                 *pseq = seq;
 891         }
 892
 893 done:
 894         TALLOC_FREE(tmp_ctx);
 895         return status;
 896 }
 897
 898 /* get a list of trusted domains */
 899 static NTSTATUS msrpc_trusted_domains(struct winbindd_domain *domain,
 900                                       TALLOC_CTX *mem_ctx,
 901                                       struct netr_DomainTrustList *ptrust_list)
 902 {
 903         struct rpc_pipe_client *lsa_pipe;
 904         struct policy_handle lsa_policy;
 905         struct netr_DomainTrust *trusts = NULL;
 906         uint32_t num_trusts = 0;
 907         TALLOC_CTX *tmp_ctx;
 908         NTSTATUS status;
 909
 910         DEBUG(3,("msrpc_trusted_domains\n"));
 911
 912         if (ptrust_list) {
 913                 ZERO_STRUCTP(ptrust_list);
 914         }
 915
 916         tmp_ctx = talloc_stackframe();
 917         if (tmp_ctx == NULL) {
 918                 return NT_STATUS_NO_MEMORY;
 919         }
 920
 921         status = cm_connect_lsa(domain, tmp_ctx, &lsa_pipe, &lsa_policy);
 922         if (!NT_STATUS_IS_OK(status))
 923                 return status;
 924
 925         status = rpc_trusted_domains(tmp_ctx,
 926                                      lsa_pipe,
 927                                      &lsa_policy,
 928                                      &num_trusts,
 929                                      &trusts);
 930         if (!NT_STATUS_IS_OK(status)) {
 931                 goto done;
 932         }
 933
 934         if (ptrust_list) {
 935                 ptrust_list->count = num_trusts;
 936                 ptrust_list->array = talloc_move(mem_ctx, &trusts);
 937         }
 938
 939 done:
 940         TALLOC_FREE(tmp_ctx);
 941         return status;
 942 }
 943
 944 /* find the lockout policy for a domain */
 945 static NTSTATUS msrpc_lockout_policy(struct winbindd_domain *domain,
 946                                      TALLOC_CTX *mem_ctx,
 947                                      struct samr_DomInfo12 *lockout_policy)
 948 {
 949         NTSTATUS result;
 950         struct rpc_pipe_client *cli;
 951         struct policy_handle dom_pol;
 952         union samr_DomainInfo *info = NULL;
 953
 954         DEBUG(3, ("msrpc_lockout_policy: fetch lockout policy for %s\n", domain->name));
 955
 956         if ( !winbindd_can_contact_domain( domain ) ) {
 957                 DEBUG(10,("msrpc_lockout_policy: No incoming trust for domain %s\n",
 958                           domain->name));
 959                 return NT_STATUS_NOT_SUPPORTED;
 960         }
 961
 962         result = cm_connect_sam(domain, mem_ctx, &cli, &dom_pol);
 963         if (!NT_STATUS_IS_OK(result)) {
 964                 goto done;
 965         }
 966
 967         result = rpccli_samr_QueryDomainInfo(cli, mem_ctx,
 968                                              &dom_pol,
 969                                              12,
 970                                              &info);
 971         if (!NT_STATUS_IS_OK(result)) {
 972                 goto done;
 973         }
 974
 975         *lockout_policy = info->info12;
 976
 977         DEBUG(10,("msrpc_lockout_policy: lockout_threshold %d\n",
 978                 info->info12.lockout_threshold));
 979
 980   done:
 981
 982         return result;
 983 }
 984
 985 /* find the password policy for a domain */
 986 static NTSTATUS msrpc_password_policy(struct winbindd_domain *domain,
 987                                       TALLOC_CTX *mem_ctx,
 988                                       struct samr_DomInfo1 *password_policy)
 989 {
 990         NTSTATUS result;
 991         struct rpc_pipe_client *cli;
 992         struct policy_handle dom_pol;
 993         union samr_DomainInfo *info = NULL;
 994
 995         DEBUG(3, ("msrpc_password_policy: fetch password policy for %s\n",
 996                   domain->name));
 997
 998         if ( !winbindd_can_contact_domain( domain ) ) {
 999                 DEBUG(10,("msrpc_password_policy: No incoming trust for domain %s\n",
1000                           domain->name));
1001                 return NT_STATUS_NOT_SUPPORTED;
1002         }
1003
1004         result = cm_connect_sam(domain, mem_ctx, &cli, &dom_pol);
1005         if (!NT_STATUS_IS_OK(result)) {
1006                 goto done;
1007         }
1008
1009         result = rpccli_samr_QueryDomainInfo(cli, mem_ctx,
1010                                              &dom_pol,
1011                                              1,
1012                                              &info);
1013         if (!NT_STATUS_IS_OK(result)) {
1014                 goto done;
1015         }
1016
1017         *password_policy = info->info1;
1018
1019         DEBUG(10,("msrpc_password_policy: min_length_password %d\n",
1020                 info->info1.min_password_length));
1021
1022   done:
1023
1024         return result;
1025 }
1026
1027 typedef NTSTATUS (*lookup_sids_fn_t)(struct rpc_pipe_client *cli,
1028                                      TALLOC_CTX *mem_ctx,
1029                                      struct policy_handle *pol,
1030                                      int num_sids,
1031                                      const struct dom_sid *sids,
1032                                      char ***pdomains,
1033                                      char ***pnames,
1034                                      enum lsa_SidType **ptypes);
1035
1036 NTSTATUS winbindd_lookup_sids(TALLOC_CTX *mem_ctx,
1037                               struct winbindd_domain *domain,
1038                               uint32_t num_sids,
1039                               const struct dom_sid *sids,
1040                               char ***domains,
1041                               char ***names,
1042                               enum lsa_SidType **types)
1043 {
1044         NTSTATUS status;
1045         struct rpc_pipe_client *cli = NULL;
1046         struct policy_handle lsa_policy;
1047         unsigned int orig_timeout;
1048         lookup_sids_fn_t lookup_sids_fn = rpccli_lsa_lookup_sids;
1049
1050         if (domain->can_do_ncacn_ip_tcp) {
1051                 status = cm_connect_lsa_tcp(domain, mem_ctx, &cli);
1052                 if (NT_STATUS_IS_OK(status)) {
1053                         lookup_sids_fn = rpccli_lsa_lookup_sids3;
1054                         goto lookup;
1055                 }
1056                 domain->can_do_ncacn_ip_tcp = false;
1057         }
1058         status = cm_connect_lsa(domain, mem_ctx, &cli, &lsa_policy);
1059
1060         if (!NT_STATUS_IS_OK(status)) {
1061                 return status;
1062         }
1063
1064  lookup:
1065         /*
1066          * This call can take a long time
1067          * allow the server to time out.
1068          * 35 seconds should do it.
1069          */
1070         orig_timeout = rpccli_set_timeout(cli, 35000);
1071
1072         status = lookup_sids_fn(cli,
1073                                 mem_ctx,
1074                                 &lsa_policy,
1075                                 num_sids,
1076                                 sids,
1077                                 domains,
1078                                 names,
1079                                 types);
1080
1081         /* And restore our original timeout. */
1082         rpccli_set_timeout(cli, orig_timeout);
1083
1084         return status;
1085 }
1086
1087 typedef NTSTATUS (*lookup_names_fn_t)(struct rpc_pipe_client *cli,
1088                                       TALLOC_CTX *mem_ctx,
1089                                       struct policy_handle *pol,
1090                                       int num_names,
1091                                       const char **names,
1092                                       const char ***dom_names,
1093                                       int level,
1094                                       struct dom_sid **sids,
1095                                       enum lsa_SidType **types);
1096
1097 NTSTATUS winbindd_lookup_names(TALLOC_CTX *mem_ctx,
1098                                struct winbindd_domain *domain,
1099                                uint32_t num_names,
1100                                const char **names,
1101                                const char ***domains,
1102                                struct dom_sid **sids,
1103                                enum lsa_SidType **types)
1104 {
1105         NTSTATUS status;
1106         struct rpc_pipe_client *cli = NULL;
1107         struct policy_handle lsa_policy;
1108         unsigned int orig_timeout = 0;
1109         lookup_names_fn_t lookup_names_fn = rpccli_lsa_lookup_names;
1110
1111         if (domain->can_do_ncacn_ip_tcp) {
1112                 status = cm_connect_lsa_tcp(domain, mem_ctx, &cli);
1113                 if (NT_STATUS_IS_OK(status)) {
1114                         lookup_names_fn = rpccli_lsa_lookup_names4;
1115                         goto lookup;
1116                 }
1117                 domain->can_do_ncacn_ip_tcp = false;
1118         }
1119         status = cm_connect_lsa(domain, mem_ctx, &cli, &lsa_policy);
1120
1121         if (!NT_STATUS_IS_OK(status)) {
1122                 return status;
1123         }
1124
1125  lookup:
1126
1127         /*
1128          * This call can take a long time
1129          * allow the server to time out.
1130          * 35 seconds should do it.
1131          */
1132         orig_timeout = rpccli_set_timeout(cli, 35000);
1133
1134         status = lookup_names_fn(cli,
1135                                  mem_ctx,
1136                                  &lsa_policy,
1137                                  num_names,
1138                                  (const char **) names,
1139                                  domains,
1140                                  1,
1141                                  sids,
1142                                  types);
1143
1144         /* And restore our original timeout. */
1145         rpccli_set_timeout(cli, orig_timeout);
1146
1147         if (!NT_STATUS_IS_OK(status)) {
1148                 return status;
1149         }
1150
1151         return status;
1152 }
1153
1154 /* the rpc backend methods are exposed via this structure */
1155 struct winbindd_methods msrpc_methods = {
1156         False,
1157         msrpc_query_user_list,
1158         msrpc_enum_dom_groups,
1159         msrpc_enum_local_groups,
1160         msrpc_name_to_sid,
1161         msrpc_sid_to_name,
1162         msrpc_rids_to_names,
1163         msrpc_query_user,
1164         msrpc_lookup_usergroups,
1165         msrpc_lookup_useraliases,
1166         msrpc_lookup_groupmem,
1167         msrpc_sequence_number,
1168         msrpc_lockout_policy,
1169         msrpc_password_policy,
1170         msrpc_trusted_domains,
1171 };