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         struct dom_sid_buf buf;
 293
 294         DEBUG(3, ("msrpc_sid_to_name: %s for domain %s\n",
 295                   dom_sid_str_buf(sid, &buf),
 296                   domain->name));
 297
 298         result = winbindd_lookup_sids(mem_ctx,
 299                                       domain,
 300                                       1,
 301                                       sid,
 302                                       &domains,
 303                                       &names,
 304                                       &types);
 305         if (!NT_STATUS_IS_OK(result)) {
 306                 DEBUG(2,("msrpc_sid_to_name: failed to lookup sids: %s\n",
 307                         nt_errstr(result)));
 308                 return result;
 309         }
 310
 311
 312         *type = (enum lsa_SidType)types[0];
 313         *domain_name = domains[0];
 314         *name = names[0];
 315
 316         DEBUG(5,("Mapped sid to [%s]\\[%s]\n", domains[0], *name));
 317
 318         name_map_status = normalize_name_map(mem_ctx, domain->name, *name,
 319                                              &mapped_name);
 320         if (NT_STATUS_IS_OK(name_map_status) ||
 321             NT_STATUS_EQUAL(name_map_status, NT_STATUS_FILE_RENAMED))
 322         {
 323                 *name = mapped_name;
 324                 DEBUG(5,("returning mapped name -- %s\n", *name));
 325         }
 326
 327         return NT_STATUS_OK;
 328 }
 329
 330 static NTSTATUS msrpc_rids_to_names(struct winbindd_domain *domain,
 331                                     TALLOC_CTX *mem_ctx,
 332                                     const struct dom_sid *sid,
 333                                     uint32_t *rids,
 334                                     size_t num_rids,
 335                                     char **domain_name,
 336                                     char ***names,
 337                                     enum lsa_SidType **types)
 338 {
 339         char **domains;
 340         NTSTATUS result;
 341         struct dom_sid *sids;
 342         size_t i;
 343         char **ret_names;
 344
 345         DEBUG(3, ("msrpc_rids_to_names: domain %s\n", domain->name ));
 346
 347         if (num_rids) {
 348                 sids = talloc_array(mem_ctx, struct dom_sid, num_rids);
 349                 if (sids == NULL) {
 350                         return NT_STATUS_NO_MEMORY;
 351                 }
 352         } else {
 353                 sids = NULL;
 354         }
 355
 356         for (i=0; i<num_rids; i++) {
 357                 if (!sid_compose(&sids[i], sid, rids[i])) {
 358                         return NT_STATUS_INTERNAL_ERROR;
 359                 }
 360         }
 361
 362         result = winbindd_lookup_sids(mem_ctx,
 363                                       domain,
 364                                       num_rids,
 365                                       sids,
 366                                       &domains,
 367                                       names,
 368                                       types);
 369
 370         if (!NT_STATUS_IS_OK(result) &&
 371             !NT_STATUS_EQUAL(result, STATUS_SOME_UNMAPPED)) {
 372                 return result;
 373         }
 374
 375         ret_names = *names;
 376         for (i=0; i<num_rids; i++) {
 377                 NTSTATUS name_map_status = NT_STATUS_UNSUCCESSFUL;
 378                 char *mapped_name = NULL;
 379
 380                 if ((*types)[i] != SID_NAME_UNKNOWN) {
 381                         name_map_status = normalize_name_map(mem_ctx,
 382                                                              domain->name,
 383                                                              ret_names[i],
 384                                                              &mapped_name);
 385                         if (NT_STATUS_IS_OK(name_map_status) ||
 386                             NT_STATUS_EQUAL(name_map_status, NT_STATUS_FILE_RENAMED))
 387                         {
 388                                 ret_names[i] = mapped_name;
 389                         }
 390
 391                         *domain_name = domains[i];
 392                 }
 393         }
 394
 395         return result;
 396 }
 397
 398 /* Lookup groups a user is a member of.  I wish Unix had a call like this! */
 399 static NTSTATUS msrpc_lookup_usergroups(struct winbindd_domain *domain,
 400                                         TALLOC_CTX *mem_ctx,
 401                                         const struct dom_sid *user_sid,
 402                                         uint32_t *pnum_groups,
 403                                         struct dom_sid **puser_grpsids)
 404 {
 405         struct rpc_pipe_client *samr_pipe;
 406         struct policy_handle dom_pol;
 407         struct dom_sid *user_grpsids = NULL;
 408         struct dom_sid_buf buf;
 409         uint32_t num_groups = 0;
 410         TALLOC_CTX *tmp_ctx;
 411         NTSTATUS status;
 412
 413         DEBUG(3,("msrpc_lookup_usergroups sid=%s\n",
 414                  dom_sid_str_buf(user_sid, &buf)));
 415
 416         *pnum_groups = 0;
 417
 418         tmp_ctx = talloc_stackframe();
 419         if (tmp_ctx == NULL) {
 420                 return NT_STATUS_NO_MEMORY;
 421         }
 422
 423         /* Check if we have a cached user_info_3 */
 424         status = lookup_usergroups_cached(tmp_ctx,
 425                                           user_sid,
 426                                           &num_groups,
 427                                           &user_grpsids);
 428         if (NT_STATUS_IS_OK(status)) {
 429                 goto cached;
 430         }
 431
 432         if ( !winbindd_can_contact_domain( domain ) ) {
 433                 DEBUG(10,("lookup_usergroups: No incoming trust for domain %s\n",
 434                           domain->name));
 435
 436                 /* Tell the cache manager not to remember this one */
 437                 status = NT_STATUS_SYNCHRONIZATION_REQUIRED;
 438                 goto done;
 439         }
 440
 441         /* no cache; hit the wire */
 442         status = cm_connect_sam(domain, tmp_ctx, false, &samr_pipe, &dom_pol);
 443         if (!NT_STATUS_IS_OK(status)) {
 444                 goto done;
 445         }
 446
 447         status = rpc_lookup_usergroups(tmp_ctx,
 448                                        samr_pipe,
 449                                        &dom_pol,
 450                                        &domain->sid,
 451                                        user_sid,
 452                                        &num_groups,
 453                                        &user_grpsids);
 454         if (!NT_STATUS_IS_OK(status)) {
 455                 goto done;
 456         }
 457
 458 cached:
 459         *pnum_groups = num_groups;
 460
 461         if (puser_grpsids) {
 462                 *puser_grpsids = talloc_move(mem_ctx, &user_grpsids);
 463         }
 464
 465 done:
 466         TALLOC_FREE(tmp_ctx);
 467         return status;
 468         return NT_STATUS_OK;
 469 }
 470
 471 #define MAX_SAM_ENTRIES_W2K 0x400 /* 1024 */
 472
 473 static NTSTATUS msrpc_lookup_useraliases(struct winbindd_domain *domain,
 474                                          TALLOC_CTX *mem_ctx,
 475                                          uint32_t num_sids, const struct dom_sid *sids,
 476                                          uint32_t *pnum_aliases,
 477                                          uint32_t **palias_rids)
 478 {
 479         struct rpc_pipe_client *samr_pipe;
 480         struct policy_handle dom_pol;
 481         uint32_t num_aliases = 0;
 482         uint32_t *alias_rids = NULL;
 483         TALLOC_CTX *tmp_ctx;
 484         NTSTATUS status;
 485
 486         DEBUG(3,("msrpc_lookup_useraliases\n"));
 487
 488         if (pnum_aliases) {
 489                 *pnum_aliases = 0;
 490         }
 491
 492         tmp_ctx = talloc_stackframe();
 493         if (tmp_ctx == NULL) {
 494                 return NT_STATUS_NO_MEMORY;
 495         }
 496
 497         if (!winbindd_can_contact_domain(domain)) {
 498                 DEBUG(10,("msrpc_lookup_useraliases: No incoming trust for domain %s\n",
 499                           domain->name));
 500                 /* Tell the cache manager not to remember this one */
 501                 status = NT_STATUS_SYNCHRONIZATION_REQUIRED;
 502                 goto done;
 503         }
 504
 505         status = cm_connect_sam(domain, tmp_ctx, false, &samr_pipe, &dom_pol);
 506         if (!NT_STATUS_IS_OK(status)) {
 507                 goto done;
 508         }
 509
 510         status = rpc_lookup_useraliases(tmp_ctx,
 511                                         samr_pipe,
 512                                         &dom_pol,
 513                                         num_sids,
 514                                         sids,
 515                                         &num_aliases,
 516                                         &alias_rids);
 517         if (!NT_STATUS_IS_OK(status)) {
 518                 goto done;
 519         }
 520
 521         if (pnum_aliases) {
 522                 *pnum_aliases = num_aliases;
 523         }
 524
 525         if (palias_rids) {
 526                 *palias_rids = talloc_move(mem_ctx, &alias_rids);
 527         }
 528
 529 done:
 530         TALLOC_FREE(tmp_ctx);
 531         return status;
 532 }
 533
 534
 535 /* Lookup group membership given a rid.   */
 536 static NTSTATUS msrpc_lookup_groupmem(struct winbindd_domain *domain,
 537                                       TALLOC_CTX *mem_ctx,
 538                                       const struct dom_sid *group_sid,
 539                                       enum lsa_SidType type,
 540                                       uint32_t *num_names,
 541                                       struct dom_sid **sid_mem,
 542                                       char ***names,
 543                                       uint32_t **name_types)
 544 {
 545         NTSTATUS status, result;
 546         uint32_t i, total_names = 0;
 547         struct policy_handle dom_pol, group_pol;
 548         uint32_t des_access = SEC_FLAG_MAXIMUM_ALLOWED;
 549         uint32_t *rid_mem = NULL;
 550         uint32_t group_rid;
 551         unsigned int j, r;
 552         struct rpc_pipe_client *cli;
 553         unsigned int orig_timeout;
 554         struct samr_RidAttrArray *rids = NULL;
 555         struct dcerpc_binding_handle *b;
 556         struct dom_sid_buf buf;
 557
 558         DEBUG(3,("msrpc_lookup_groupmem: %s sid=%s\n", domain->name,
 559                  dom_sid_str_buf(group_sid, &buf)));
 560
 561         if ( !winbindd_can_contact_domain( domain ) ) {
 562                 DEBUG(10,("lookup_groupmem: No incoming trust for domain %s\n",
 563                           domain->name));
 564                 return NT_STATUS_OK;
 565         }
 566
 567         if (!sid_peek_check_rid(&domain->sid, group_sid, &group_rid))
 568                 return NT_STATUS_UNSUCCESSFUL;
 569
 570         *num_names = 0;
 571
 572         result = cm_connect_sam(domain, mem_ctx, false, &cli, &dom_pol);
 573         if (!NT_STATUS_IS_OK(result))
 574                 return result;
 575
 576         b = cli->binding_handle;
 577
 578         status = dcerpc_samr_OpenGroup(b, mem_ctx,
 579                                        &dom_pol,
 580                                        des_access,
 581                                        group_rid,
 582                                        &group_pol,
 583                                        &result);
 584         if (any_nt_status_not_ok(status, result, &status)) {
 585                 return status;
 586         }
 587
 588         /* Step #1: Get a list of user rids that are the members of the
 589            group. */
 590
 591         /* This call can take a long time - allow the server to time out.
 592            35 seconds should do it. */
 593
 594         orig_timeout = rpccli_set_timeout(cli, 35000);
 595
 596         status = dcerpc_samr_QueryGroupMember(b, mem_ctx,
 597                                               &group_pol,
 598                                               &rids,
 599                                               &result);
 600
 601         /* And restore our original timeout. */
 602         rpccli_set_timeout(cli, orig_timeout);
 603
 604         {
 605                 NTSTATUS _result;
 606                 dcerpc_samr_Close(b, mem_ctx, &group_pol, &_result);
 607         }
 608
 609         if (any_nt_status_not_ok(status, result, &status)) {
 610                 return status;
 611         }
 612
 613         if (!rids || !rids->count) {
 614                 names = NULL;
 615                 name_types = NULL;
 616                 sid_mem = NULL;
 617                 return NT_STATUS_OK;
 618         }
 619
 620         *num_names = rids->count;
 621         rid_mem = rids->rids;
 622
 623         /* Step #2: Convert list of rids into list of usernames.  Do this
 624            in bunches of ~1000 to avoid crashing NT4.  It looks like there
 625            is a buffer overflow or something like that lurking around
 626            somewhere. */
 627
 628 #define MAX_LOOKUP_RIDS 900
 629
 630         *names = talloc_zero_array(mem_ctx, char *, *num_names);
 631         *name_types = talloc_zero_array(mem_ctx, uint32_t, *num_names);
 632         *sid_mem = talloc_zero_array(mem_ctx, struct dom_sid, *num_names);
 633
 634         for (j=0;j<(*num_names);j++)
 635                 sid_compose(&(*sid_mem)[j], &domain->sid, rid_mem[j]);
 636
 637         if (*num_names>0 && (!*names || !*name_types))
 638                 return NT_STATUS_NO_MEMORY;
 639
 640         for (i = 0; i < *num_names; i += MAX_LOOKUP_RIDS) {
 641                 int num_lookup_rids = MIN(*num_names - i, MAX_LOOKUP_RIDS);
 642                 struct lsa_Strings tmp_names;
 643                 struct samr_Ids tmp_types;
 644
 645                 /* Lookup a chunk of rids */
 646
 647                 status = dcerpc_samr_LookupRids(b, mem_ctx,
 648                                                 &dom_pol,
 649                                                 num_lookup_rids,
 650                                                 &rid_mem[i],
 651                                                 &tmp_names,
 652                                                 &tmp_types,
 653                                                 &result);
 654                 if (!NT_STATUS_IS_OK(status)) {
 655                         return status;
 656                 }
 657
 658                 /* see if we have a real error (and yes the
 659                    STATUS_SOME_UNMAPPED is the one returned from 2k) */
 660
 661                 if (!NT_STATUS_IS_OK(result) &&
 662                     !NT_STATUS_EQUAL(result, STATUS_SOME_UNMAPPED))
 663                         return result;
 664
 665                 /* Copy result into array.  The talloc system will take
 666                    care of freeing the temporary arrays later on. */
 667
 668                 if (tmp_names.count != num_lookup_rids) {
 669                         return NT_STATUS_INVALID_NETWORK_RESPONSE;
 670                 }
 671                 if (tmp_types.count != num_lookup_rids) {
 672                         return NT_STATUS_INVALID_NETWORK_RESPONSE;
 673                 }
 674
 675                 for (r=0; r<tmp_names.count; r++) {
 676                         if (tmp_types.ids[r] == SID_NAME_UNKNOWN) {
 677                                 continue;
 678                         }
 679                         if (total_names >= *num_names) {
 680                                 break;
 681                         }
 682                         (*names)[total_names] = fill_domain_username_talloc(
 683                                 mem_ctx, domain->name,
 684                                 tmp_names.names[r].string, true);
 685                         (*name_types)[total_names] = tmp_types.ids[r];
 686                         total_names += 1;
 687                 }
 688         }
 689
 690         *num_names = total_names;
 691
 692         return NT_STATUS_OK;
 693 }
 694
 695 #ifdef HAVE_LDAP
 696
 697 #include "ads.h"
 698
 699 static int get_ldap_seq(const char *server, struct sockaddr_storage *ss, int port, uint32_t *seq)
 700 {
 701         int ret = -1;
 702         struct timeval to;
 703         const char *attrs[] = {"highestCommittedUSN", NULL};
 704         LDAPMessage *res = NULL;
 705         char **values = NULL;
 706         LDAP *ldp = NULL;
 707
 708         *seq = DOM_SEQUENCE_NONE;
 709
 710         /*
 711          * Parameterised (5) second timeout on open. This is needed as the
 712          * search timeout doesn't seem to apply to doing an open as well. JRA.
 713          */
 714
 715         ldp = ldap_open_with_timeout(server, ss, port, lp_ldap_timeout());
 716         if (ldp == NULL)
 717                 return -1;
 718
 719         /* Timeout if no response within 20 seconds. */
 720         to.tv_sec = 10;
 721         to.tv_usec = 0;
 722
 723         if (ldap_search_st(ldp, "", LDAP_SCOPE_BASE, "(objectclass=*)",
 724                            discard_const_p(char *, attrs), 0, &to, &res))
 725                 goto done;
 726
 727         if (ldap_count_entries(ldp, res) != 1)
 728                 goto done;
 729
 730         values = ldap_get_values(ldp, res, "highestCommittedUSN");
 731         if (!values || !values[0])
 732                 goto done;
 733
 734         *seq = atoi(values[0]);
 735         ret = 0;
 736
 737   done:
 738
 739         if (values)
 740                 ldap_value_free(values);
 741         if (res)
 742                 ldap_msgfree(res);
 743         if (ldp)
 744                 ldap_unbind(ldp);
 745         return ret;
 746 }
 747
 748 /**********************************************************************
 749  Get the sequence number for a Windows AD native mode domain using
 750  LDAP queries.
 751 **********************************************************************/
 752
 753 static int get_ldap_sequence_number(struct winbindd_domain *domain, uint32_t *seq)
 754 {
 755         int ret = -1;
 756         char addr[INET6_ADDRSTRLEN];
 757
 758         print_sockaddr(addr, sizeof(addr), &domain->dcaddr);
 759         if ((ret = get_ldap_seq(addr, &domain->dcaddr, LDAP_PORT, seq)) == 0) {
 760                 DEBUG(3, ("get_ldap_sequence_number: Retrieved sequence "
 761                           "number for Domain (%s) from DC (%s)\n",
 762                         domain->name, addr));
 763         }
 764         return ret;
 765 }
 766
 767 #endif /* HAVE_LDAP */
 768
 769 /* find the sequence number for a domain */
 770 static NTSTATUS msrpc_sequence_number(struct winbindd_domain *domain,
 771                                       uint32_t *pseq)
 772 {
 773         struct rpc_pipe_client *samr_pipe;
 774         struct policy_handle dom_pol;
 775         uint32_t seq = DOM_SEQUENCE_NONE;
 776         TALLOC_CTX *tmp_ctx;
 777         NTSTATUS status;
 778
 779         DEBUG(3, ("msrpc_sequence_number: fetch sequence_number for %s\n", domain->name));
 780
 781         if (pseq) {
 782                 *pseq = DOM_SEQUENCE_NONE;
 783         }
 784
 785         tmp_ctx = talloc_stackframe();
 786         if (tmp_ctx == NULL) {
 787                 return NT_STATUS_NO_MEMORY;
 788         }
 789
 790         if ( !winbindd_can_contact_domain( domain ) ) {
 791                 DEBUG(10,("sequence_number: No incoming trust for domain %s\n",
 792                           domain->name));
 793                 if (pseq) {
 794                         *pseq = time(NULL);
 795                 }
 796                 status = NT_STATUS_OK;
 797                 goto done;
 798         }
 799
 800 #ifdef HAVE_LDAP
 801         if (domain->active_directory) {
 802                 int rc;
 803
 804                 DEBUG(8,("using get_ldap_seq() to retrieve the "
 805                          "sequence number\n"));
 806
 807                 rc =  get_ldap_sequence_number(domain, &seq);
 808                 if (rc == 0) {
 809                         DEBUG(10,("domain_sequence_number: LDAP for "
 810                                   "domain %s is %u\n",
 811                                   domain->name, seq));
 812
 813                         if (pseq) {
 814                                 *pseq = seq;
 815                         }
 816
 817                         status = NT_STATUS_OK;
 818                         goto done;
 819                 }
 820
 821                 DEBUG(10,("domain_sequence_number: failed to get LDAP "
 822                           "sequence number for domain %s\n",
 823                           domain->name ));
 824         }
 825 #endif /* HAVE_LDAP */
 826
 827         status = cm_connect_sam(domain, tmp_ctx, false, &samr_pipe, &dom_pol);
 828         if (!NT_STATUS_IS_OK(status)) {
 829                 goto done;
 830         }
 831
 832         status = rpc_sequence_number(tmp_ctx,
 833                                      samr_pipe,
 834                                      &dom_pol,
 835                                      domain->name,
 836                                      &seq);
 837         if (!NT_STATUS_IS_OK(status)) {
 838                 goto done;
 839         }
 840
 841         if (pseq) {
 842                 *pseq = seq;
 843         }
 844
 845 done:
 846         TALLOC_FREE(tmp_ctx);
 847         return status;
 848 }
 849
 850 /* get a list of trusted domains */
 851 static NTSTATUS msrpc_trusted_domains(struct winbindd_domain *domain,
 852                                       TALLOC_CTX *mem_ctx,
 853                                       struct netr_DomainTrustList *ptrust_list)
 854 {
 855         struct rpc_pipe_client *lsa_pipe;
 856         struct policy_handle lsa_policy;
 857         struct netr_DomainTrust *trusts = NULL;
 858         uint32_t num_trusts = 0;
 859         TALLOC_CTX *tmp_ctx;
 860         NTSTATUS status;
 861
 862         DEBUG(3,("msrpc_trusted_domains\n"));
 863
 864         if (ptrust_list) {
 865                 ZERO_STRUCTP(ptrust_list);
 866         }
 867
 868         tmp_ctx = talloc_stackframe();
 869         if (tmp_ctx == NULL) {
 870                 return NT_STATUS_NO_MEMORY;
 871         }
 872
 873         status = cm_connect_lsa(domain, tmp_ctx, &lsa_pipe, &lsa_policy);
 874         if (!NT_STATUS_IS_OK(status)) {
 875                 goto done;
 876         }
 877
 878         status = rpc_trusted_domains(tmp_ctx,
 879                                      lsa_pipe,
 880                                      &lsa_policy,
 881                                      &num_trusts,
 882                                      &trusts);
 883         if (!NT_STATUS_IS_OK(status)) {
 884                 goto done;
 885         }
 886
 887         if (ptrust_list) {
 888                 ptrust_list->count = num_trusts;
 889                 ptrust_list->array = talloc_move(mem_ctx, &trusts);
 890         }
 891
 892 done:
 893         TALLOC_FREE(tmp_ctx);
 894         return status;
 895 }
 896
 897 /* find the lockout policy for a domain */
 898 static NTSTATUS msrpc_lockout_policy(struct winbindd_domain *domain,
 899                                      TALLOC_CTX *mem_ctx,
 900                                      struct samr_DomInfo12 *lockout_policy)
 901 {
 902         NTSTATUS status, result;
 903         struct rpc_pipe_client *cli;
 904         struct policy_handle dom_pol;
 905         union samr_DomainInfo *info = NULL;
 906         struct dcerpc_binding_handle *b;
 907
 908         DEBUG(3, ("msrpc_lockout_policy: fetch lockout policy for %s\n", domain->name));
 909
 910         if ( !winbindd_can_contact_domain( domain ) ) {
 911                 DEBUG(10,("msrpc_lockout_policy: No incoming trust for domain %s\n",
 912                           domain->name));
 913                 return NT_STATUS_NOT_SUPPORTED;
 914         }
 915
 916         status = cm_connect_sam(domain, mem_ctx, false, &cli, &dom_pol);
 917         if (!NT_STATUS_IS_OK(status)) {
 918                 goto done;
 919         }
 920
 921         b = cli->binding_handle;
 922
 923         status = dcerpc_samr_QueryDomainInfo(b, mem_ctx,
 924                                              &dom_pol,
 925                                              DomainLockoutInformation,
 926                                              &info,
 927                                              &result);
 928         if (any_nt_status_not_ok(status, result, &status)) {
 929                 return status;
 930         }
 931
 932         *lockout_policy = info->info12;
 933
 934         DEBUG(10,("msrpc_lockout_policy: lockout_threshold %d\n",
 935                 info->info12.lockout_threshold));
 936
 937   done:
 938
 939         return status;
 940 }
 941
 942 /* find the password policy for a domain */
 943 static NTSTATUS msrpc_password_policy(struct winbindd_domain *domain,
 944                                       TALLOC_CTX *mem_ctx,
 945                                       struct samr_DomInfo1 *password_policy)
 946 {
 947         NTSTATUS status, result;
 948         struct rpc_pipe_client *cli;
 949         struct policy_handle dom_pol;
 950         union samr_DomainInfo *info = NULL;
 951         struct dcerpc_binding_handle *b;
 952
 953         DEBUG(3, ("msrpc_password_policy: fetch password policy for %s\n",
 954                   domain->name));
 955
 956         if ( !winbindd_can_contact_domain( domain ) ) {
 957                 DEBUG(10,("msrpc_password_policy: No incoming trust for domain %s\n",
 958                           domain->name));
 959                 return NT_STATUS_NOT_SUPPORTED;
 960         }
 961
 962         status = cm_connect_sam(domain, mem_ctx, false, &cli, &dom_pol);
 963         if (!NT_STATUS_IS_OK(status)) {
 964                 goto done;
 965         }
 966
 967         b = cli->binding_handle;
 968
 969         status = dcerpc_samr_QueryDomainInfo(b, mem_ctx,
 970                                              &dom_pol,
 971                                              DomainPasswordInformation,
 972                                              &info,
 973                                              &result);
 974         if (!NT_STATUS_IS_OK(status)) {
 975                 goto done;
 976         }
 977         if (!NT_STATUS_IS_OK(result)) {
 978                 goto done;
 979         }
 980
 981         *password_policy = info->info1;
 982
 983         DEBUG(10,("msrpc_password_policy: min_length_password %d\n",
 984                 info->info1.min_password_length));
 985
 986   done:
 987
 988         return status;
 989 }
 990
 991 static enum lsa_LookupNamesLevel winbindd_lookup_level(
 992         struct winbindd_domain *domain)
 993 {
 994         enum lsa_LookupNamesLevel level = LSA_LOOKUP_NAMES_DOMAINS_ONLY;
 995
 996         if (domain->internal) {
 997                 level = LSA_LOOKUP_NAMES_ALL;
 998         } else if (domain->secure_channel_type == SEC_CHAN_DNS_DOMAIN) {
 999                 if (domain->domain_flags & NETR_TRUST_FLAG_IN_FOREST) {
1000                         /*
1001                          * TODO:
1002                          *
1003                          * Depending on what we want to resolve. We need to use:
1004                          * 1. LsapLookupXForestReferral(5)/LSA_LOOKUP_NAMES_FOREST_TRUSTS_ONLY
1005                          *    if we want to pass the request into the direction of the forest
1006                          *    root domain. The forest root domain uses
1007                          *    LsapLookupXForestResolve(6)/LSA_LOOKUP_NAMES_UPLEVEL_TRUSTS_ONLY2
1008                          *    when passing the request to trusted forests.
1009                          * 2. LsapLookupGC(4)/LSA_LOOKUP_NAMES_UPLEVEL_TRUSTS_ONLY
1010                          *    if we're not a GC and want to resolve a name within our own forest.
1011                          *
1012                          * As we don't support more than one domain in our own forest
1013                          * and always try to be a GC for now, we just set
1014                          * LSA_LOOKUP_NAMES_FOREST_TRUSTS_ONLY.
1015                          */
1016                         level = LSA_LOOKUP_NAMES_FOREST_TRUSTS_ONLY;
1017                 } else if (domain->domain_trust_attribs & LSA_TRUST_ATTRIBUTE_FOREST_TRANSITIVE) {
1018                         /*
1019                          * This is LsapLookupXForestResolve(6)/LSA_LOOKUP_NAMES_UPLEVEL_TRUSTS_ONLY2
1020                          */
1021                         level = LSA_LOOKUP_NAMES_UPLEVEL_TRUSTS_ONLY2;
1022                 } else {
1023                         /*
1024                          * This is LsapLookupTDL(3)/LSA_LOOKUP_NAMES_PRIMARY_DOMAIN_ONLY
1025                          */
1026                         level = LSA_LOOKUP_NAMES_PRIMARY_DOMAIN_ONLY;
1027                 }
1028         } else if (domain->secure_channel_type == SEC_CHAN_DOMAIN) {
1029                 /*
1030                  * This is LsapLookupTDL(3)/LSA_LOOKUP_NAMES_PRIMARY_DOMAIN_ONLY
1031                  */
1032                 level = LSA_LOOKUP_NAMES_PRIMARY_DOMAIN_ONLY;
1033         } else if (domain->rodc) {
1034                 level = LSA_LOOKUP_NAMES_RODC_REFERRAL_TO_FULL_DC;
1035         } else {
1036                 /*
1037                  * This is LsapLookupPDC(2)/LSA_LOOKUP_NAMES_DOMAINS_ONLY
1038                  */
1039                 level = LSA_LOOKUP_NAMES_DOMAINS_ONLY;
1040         }
1041
1042         return level;
1043 }
1044
1045 NTSTATUS winbindd_lookup_sids(TALLOC_CTX *mem_ctx,
1046                               struct winbindd_domain *domain,
1047                               uint32_t num_sids,
1048                               const struct dom_sid *sids,
1049                               char ***domains,
1050                               char ***names,
1051                               enum lsa_SidType **types)
1052 {
1053         NTSTATUS status;
1054         NTSTATUS result;
1055         struct rpc_pipe_client *cli = NULL;
1056         struct dcerpc_binding_handle *b = NULL;
1057         struct policy_handle lsa_policy;
1058         unsigned int orig_timeout;
1059         bool use_lookupsids3 = false;
1060         bool retried = false;
1061         enum lsa_LookupNamesLevel level = LSA_LOOKUP_NAMES_ALL;
1062
1063  connect:
1064         status = cm_connect_lsat(domain, mem_ctx, &cli, &lsa_policy);
1065         if (!NT_STATUS_IS_OK(status)) {
1066                 return status;
1067         }
1068
1069         b = cli->binding_handle;
1070
1071         if (cli->transport->transport == NCACN_IP_TCP) {
1072                 use_lookupsids3 = true;
1073         }
1074
1075         level = winbindd_lookup_level(domain);
1076
1077         /*
1078          * This call can take a long time
1079          * allow the server to time out.
1080          * 35 seconds should do it.
1081          */
1082         orig_timeout = dcerpc_binding_handle_set_timeout(b, 35000);
1083
1084         status = dcerpc_lsa_lookup_sids_generic(b,
1085                                                 mem_ctx,
1086                                                 &lsa_policy,
1087                                                 num_sids,
1088                                                 sids,
1089                                                 level,
1090                                                 domains,
1091                                                 names,
1092                                                 types,
1093                                                 use_lookupsids3,
1094                                                 &result);
1095
1096         /* And restore our original timeout. */
1097         dcerpc_binding_handle_set_timeout(b, orig_timeout);
1098
1099         if (NT_STATUS_EQUAL(status, NT_STATUS_ACCESS_DENIED) ||
1100             NT_STATUS_EQUAL(status, NT_STATUS_RPC_SEC_PKG_ERROR) ||
1101             NT_STATUS_EQUAL(status, NT_STATUS_NETWORK_ACCESS_DENIED)) {
1102                 /*
1103                  * This can happen if the schannel key is not
1104                  * valid anymore, we need to invalidate the
1105                  * all connections to the dc and reestablish
1106                  * a netlogon connection first.
1107                  */
1108                 invalidate_cm_connection(domain);
1109                 domain->can_do_ncacn_ip_tcp = domain->active_directory;
1110                 if (!retried) {
1111                         retried = true;
1112                         goto connect;
1113                 }
1114                 status = NT_STATUS_ACCESS_DENIED;
1115         }
1116
1117         if (any_nt_status_not_ok(status, result, &status)) {
1118                 return status;
1119         }
1120
1121         return NT_STATUS_OK;
1122 }
1123
1124 static NTSTATUS winbindd_lookup_names(TALLOC_CTX *mem_ctx,
1125                                       struct winbindd_domain *domain,
1126                                       uint32_t num_names,
1127                                       const char **names,
1128                                       const char ***domains,
1129                                       struct dom_sid **sids,
1130                                       enum lsa_SidType **types)
1131 {
1132         NTSTATUS status;
1133         NTSTATUS result;
1134         struct rpc_pipe_client *cli = NULL;
1135         struct dcerpc_binding_handle *b = NULL;
1136         struct policy_handle lsa_policy;
1137         unsigned int orig_timeout = 0;
1138         bool use_lookupnames4 = false;
1139         bool retried = false;
1140         enum lsa_LookupNamesLevel level = LSA_LOOKUP_NAMES_ALL;
1141
1142  connect:
1143         status = cm_connect_lsat(domain, mem_ctx, &cli, &lsa_policy);
1144         if (!NT_STATUS_IS_OK(status)) {
1145                 return status;
1146         }
1147
1148         b = cli->binding_handle;
1149
1150         if (cli->transport->transport == NCACN_IP_TCP) {
1151                 use_lookupnames4 = true;
1152         }
1153
1154         level = winbindd_lookup_level(domain);
1155
1156         /*
1157          * This call can take a long time
1158          * allow the server to time out.
1159          * 35 seconds should do it.
1160          */
1161         orig_timeout = dcerpc_binding_handle_set_timeout(b, 35000);
1162
1163         status = dcerpc_lsa_lookup_names_generic(b,
1164                                                  mem_ctx,
1165                                                  &lsa_policy,
1166                                                  num_names,
1167                                                  (const char **) names,
1168                                                  domains,
1169                                                  level,
1170                                                  sids,
1171                                                  types,
1172                                                  use_lookupnames4,
1173                                                  &result);
1174
1175         /* And restore our original timeout. */
1176         dcerpc_binding_handle_set_timeout(b, orig_timeout);
1177
1178         if (NT_STATUS_EQUAL(status, NT_STATUS_ACCESS_DENIED) ||
1179             NT_STATUS_EQUAL(status, NT_STATUS_RPC_SEC_PKG_ERROR) ||
1180             NT_STATUS_EQUAL(status, NT_STATUS_NETWORK_ACCESS_DENIED)) {
1181                 /*
1182                  * This can happen if the schannel key is not
1183                  * valid anymore, we need to invalidate the
1184                  * all connections to the dc and reestablish
1185                  * a netlogon connection first.
1186                  */
1187                 invalidate_cm_connection(domain);
1188                 if (!retried) {
1189                         retried = true;
1190                         goto connect;
1191                 }
1192                 status = NT_STATUS_ACCESS_DENIED;
1193         }
1194
1195         if (any_nt_status_not_ok(status, result, &status)) {
1196                 return status;
1197         }
1198
1199         return NT_STATUS_OK;
1200 }
1201
1202 /* the rpc backend methods are exposed via this structure */
1203 struct winbindd_methods msrpc_methods = {
1204         False,
1205         msrpc_query_user_list,
1206         msrpc_enum_dom_groups,
1207         msrpc_enum_local_groups,
1208         msrpc_name_to_sid,
1209         msrpc_sid_to_name,
1210         msrpc_rids_to_names,
1211         msrpc_lookup_usergroups,
1212         msrpc_lookup_useraliases,
1213         msrpc_lookup_groupmem,
1214         msrpc_sequence_number,
1215         msrpc_lockout_policy,
1216         msrpc_password_policy,
1217         msrpc_trusted_domains,
1218 };