source3/nsswitch/winbindd_group.c

   1 /*
   2    Unix SMB/Netbios implementation.
   3    Version 2.0
   4
   5    Winbind daemon for ntdom nss module
   6
   7    Copyright (C) Tim Potter 2000
   8
   9    This program is free software; you can redistribute it and/or modify
  10    it under the terms of the GNU General Public License as published by
  11    the Free Software Foundation; either version 2 of the License, or
  12    (at your option) any later version.
  13
  14    This program is distributed in the hope that it will be useful,
  15    but WITHOUT ANY WARRANTY; without even the implied warranty of
  16    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17    GNU General Public License for more details.
  18
  19    You should have received a copy of the GNU General Public License
  20    along with this program; if not, write to the Free Software
  21    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  22 */
  23
  24 #include "winbindd.h"
  25
  26 /* Fill a grent structure from various other information */
  27
  28 static BOOL fill_grent(struct winbindd_gr *gr, char *gr_name,
  29                        gid_t unix_gid)
  30 {
  31         /* Fill in uid/gid */
  32
  33         gr->gr_gid = unix_gid;
  34
  35         /* Group name and password */
  36
  37         safe_strcpy(gr->gr_name, gr_name, sizeof(gr->gr_name) - 1);
  38         safe_strcpy(gr->gr_passwd, "x", sizeof(gr->gr_passwd) - 1);
  39
  40         return True;
  41 }
  42
  43 /* Fill in the group membership field of a NT group given by group_rid */
  44
  45 static BOOL fill_grent_mem(struct winbindd_domain *domain,
  46                            uint32 group_rid,
  47                            enum SID_NAME_USE group_name_type,
  48                            int *num_gr_mem, char **gr_mem, int *gr_mem_len)
  49 {
  50         uint32 *rid_mem = NULL, num_names = 0;
  51         uint32 *name_types = NULL;
  52         int buf_len, buf_ndx, i;
  53         char **names = NULL, *buf;
  54         BOOL result = False;
  55         TALLOC_CTX *mem_ctx;
  56
  57         if (!(mem_ctx = talloc_init()))
  58                 return False;
  59
  60         /* Initialise group membership information */
  61
  62         DEBUG(10, ("fill_grent_mem(): group %s rid 0x%x\n",
  63                    domain ? domain->name : "NULL", group_rid));
  64
  65         *num_gr_mem = 0;
  66
  67         if (group_name_type != SID_NAME_DOM_GRP) {
  68                 DEBUG(1, ("fill_grent_mem(): rid %d in domain %s isn't a "
  69                           "domain group\n", group_rid, domain->name));
  70                 goto done;
  71         }
  72
  73         /* Lookup group members */
  74
  75         if (!winbindd_lookup_groupmem(domain, mem_ctx, group_rid, &num_names,
  76                                       &rid_mem, &names, &name_types)) {
  77
  78                 DEBUG(1, ("fill_grent_mem(): could not lookup membership "
  79                           "for group rid %d in domain %s\n",
  80                           group_rid, domain->name));
  81
  82                 goto done;
  83         }
  84
  85         DEBUG(10, ("fill_grent_mem(): looked up %d names\n", num_names));
  86
  87         if (DEBUGLEVEL >= 10) {
  88                 for (i = 0; i < num_names; i++)
  89                         DEBUG(10, ("\t%20s %x %d\n", names[i], rid_mem[i],
  90                                    name_types[i]));
  91         }
  92
  93         /* Add members to list */
  94
  95         buf = NULL;
  96         buf_len = buf_ndx = 0;
  97
  98  again:
  99
 100         for (i = 0; i < num_names; i++) {
 101                 char *the_name;
 102                 fstring name;
 103                 int len;
 104
 105                 the_name = names[i];
 106
 107                 DEBUG(10, ("fill_grent_mem(): processing name %s\n",
 108                            the_name));
 109
 110                 /* FIXME: need to cope with groups within groups.  These
 111                    occur in Universal groups on a Windows 2000 native mode
 112                    server. */
 113
 114                 if (name_types[i] != SID_NAME_USER) {
 115                         DEBUG(3, ("fill_grent_mem(): name %s isn't a domain "
 116                                   "user\n", the_name));
 117                         continue;
 118                 }
 119
 120                 /* Don't bother with machine accounts */
 121
 122                 if (the_name[strlen(the_name) - 1] == '$') {
 123                         DEBUG(10, ("fill_grent_mem(): %s is machine account\n",
 124                                    the_name));
 125                         continue;
 126                 }
 127
 128                 /* Append domain name */
 129
 130                 snprintf(name, sizeof(name), "%s%s%s", domain->name,
 131                          lp_winbind_separator(), the_name);
 132
 133                 len = strlen(name);
 134
 135                 /* Add to list or calculate buffer length */
 136
 137                 if (!buf) {
 138                         buf_len += len + 1; /* List is comma separated */
 139                         (*num_gr_mem)++;
 140                         DEBUG(10, ("fill_grent_mem(): buf_len + %d = %d\n", len + 1,
 141                                    buf_len));
 142                 } else {
 143                         DEBUG(10, ("fill_grent_mem(): appending %s at index %d\n",
 144                                    name, len));
 145                         safe_strcpy(&buf[buf_ndx], name, len);
 146                         buf_ndx += len;
 147                         buf[buf_ndx] = ',';
 148                         buf_ndx++;
 149                 }
 150         }
 151
 152         /* Allocate buffer */
 153
 154         if (!buf) {
 155                 if (!(buf = malloc(buf_len))) {
 156                         DEBUG(1, ("fill_grent_mem(): out of memory\n"));
 157                         result = False;
 158                         goto done;
 159                 }
 160                 memset(buf, 0, buf_len);
 161                 goto again;
 162         }
 163
 164         if (buf && buf_ndx > 0) {
 165                 buf[buf_ndx - 1] = '\0';
 166         }
 167
 168         *gr_mem = buf;
 169         *gr_mem_len = buf_len;
 170
 171         DEBUG(10, ("fill_grent_mem(): num_mem = %d, len = %d, mem = %s\n",
 172                    *num_gr_mem, buf_len, num_gr_mem ? buf : "NULL"));
 173
 174         result = True;
 175
 176 done:
 177         talloc_destroy(mem_ctx);
 178
 179         DEBUG(10, ("fill_grent_mem(): returning %d\n", result));
 180
 181         return result;
 182 }
 183
 184 /* Return a group structure from a group name */
 185
 186 enum winbindd_result winbindd_getgrnam_from_group(struct winbindd_cli_state
 187                                                   *state)
 188 {
 189         DOM_SID group_sid;
 190         struct winbindd_domain *domain;
 191         enum SID_NAME_USE name_type;
 192         uint32 group_rid;
 193         fstring name_domain, name_group, name;
 194         char *tmp, *gr_mem;
 195         gid_t gid;
 196         int extra_data_len, gr_mem_len;
 197
 198         DEBUG(3, ("[%5d]: getgrnam %s\n", state->pid,
 199                   state->request.data.groupname));
 200
 201         /* Parse domain and groupname */
 202
 203         memset(name_group, 0, sizeof(fstring));
 204
 205         tmp = state->request.data.groupname;
 206         parse_domain_user(tmp, name_domain, name_group);
 207
 208         /* Reject names that don't have a domain - i.e name_domain contains
 209            the entire name. */
 210
 211         if (strequal(name_group, ""))
 212                 return WINBINDD_ERROR;
 213
 214         /* Get info for the domain */
 215
 216         if ((domain = find_domain_from_name(name_domain)) == NULL) {
 217                 DEBUG(0, ("getgrname_from_group(): could not get domain "
 218                           "sid for domain %s\n", name_domain));
 219                 return WINBINDD_ERROR;
 220         }
 221
 222         /* Check for cached group entry */
 223
 224         if (winbindd_fetch_group_cache_entry(domain, name_group,
 225                                              &state->response.data.gr,
 226                                              &state->response.extra_data,
 227                                              &extra_data_len)) {
 228                 state->response.length += extra_data_len;
 229                 return WINBINDD_OK;
 230         }
 231
 232         snprintf(name, sizeof(name), "%s\\%s", name_domain, name_group);
 233
 234         /* Get rid and name type from name */
 235
 236         if (!winbindd_lookup_sid_by_name(name, &group_sid, &name_type)) {
 237                 DEBUG(1, ("group %s in domain %s does not exist\n",
 238                           name_group, name_domain));
 239                 return WINBINDD_ERROR;
 240         }
 241
 242         if ((name_type != SID_NAME_ALIAS) && (name_type != SID_NAME_DOM_GRP)) {
 243                 DEBUG(1, ("from_group: name '%s' is not a local or domain "
 244                           "group: %d\n", name_group, name_type));
 245                 return WINBINDD_ERROR;
 246         }
 247
 248         /* Fill in group structure */
 249
 250         sid_split_rid(&group_sid, &group_rid);
 251
 252         if (!winbindd_idmap_get_gid_from_rid(domain->name, group_rid, &gid)) {
 253                 DEBUG(1, ("error sursing unix gid for sid\n"));
 254                 return WINBINDD_ERROR;
 255         }
 256
 257         if (!fill_grent(&state->response.data.gr,
 258                         state->request.data.groupname, gid) ||
 259             !fill_grent_mem(domain, group_rid, name_type,
 260                             &state->response.data.gr.num_gr_mem,
 261                             &gr_mem, &gr_mem_len))
 262                 return WINBINDD_ERROR;
 263
 264         /* Group membership lives at start of extra data */
 265
 266         state->response.data.gr.gr_mem_ofs = 0;
 267
 268         state->response.length += gr_mem_len;
 269         state->response.extra_data = gr_mem;
 270
 271         /* Update cached group info */
 272
 273         winbindd_store_group_cache_entry(domain, name_group,
 274                                          &state->response.data.gr,
 275                                          state->response.extra_data,
 276                                          gr_mem_len);
 277
 278         return WINBINDD_OK;
 279 }
 280
 281 /* Return a group structure from a gid number */
 282
 283 enum winbindd_result winbindd_getgrnam_from_gid(struct winbindd_cli_state
 284                                                 *state)
 285 {
 286         struct winbindd_domain *domain;
 287         DOM_SID group_sid;
 288         enum SID_NAME_USE name_type;
 289         fstring group_name;
 290         uint32 group_rid;
 291         int extra_data_len, gr_mem_len;
 292         char *gr_mem;
 293
 294         DEBUG(3, ("[%5d]: getgrgid %d\n", state->pid,
 295                   state->request.data.gid));
 296
 297         /* Bug out if the gid isn't in the winbind range */
 298
 299         if ((state->request.data.gid < server_state.gid_low) ||
 300             (state->request.data.gid > server_state.gid_high))
 301                 return WINBINDD_ERROR;
 302
 303         /* Get rid from gid */
 304
 305         if (!winbindd_idmap_get_rid_from_gid(state->request.data.gid,
 306                                              &group_rid, &domain)) {
 307                 DEBUG(1, ("Could not convert gid %d to rid\n",
 308                           state->request.data.gid));
 309                 return WINBINDD_ERROR;
 310         }
 311
 312         /* Try a cached entry */
 313
 314         if (winbindd_fetch_gid_cache_entry(domain,
 315                                            state->request.data.gid,
 316                                            &state->response.data.gr,
 317                                            &state->response.extra_data,
 318                                            &extra_data_len)) {
 319                 state->response.length += extra_data_len;
 320                 return WINBINDD_OK;
 321         }
 322
 323         /* Get sid from gid */
 324
 325         sid_copy(&group_sid, &domain->sid);
 326         sid_append_rid(&group_sid, group_rid);
 327
 328         if (!winbindd_lookup_name_by_sid(&group_sid, group_name, &name_type)) {
 329                 DEBUG(1, ("Could not lookup sid\n"));
 330                 return WINBINDD_ERROR;
 331         }
 332
 333         if (strcmp(lp_winbind_separator(),"\\"))
 334                 string_sub(group_name, "\\", lp_winbind_separator(),
 335                            sizeof(fstring));
 336
 337         if (!((name_type == SID_NAME_ALIAS) ||
 338               (name_type == SID_NAME_DOM_GRP))) {
 339                 DEBUG(1, ("from_gid: name '%s' is not a local or domain "
 340                           "group: %d\n", group_name, name_type));
 341                 return WINBINDD_ERROR;
 342         }
 343
 344         /* Fill in group structure */
 345
 346         if (!fill_grent(&state->response.data.gr, group_name,
 347                         state->request.data.gid) ||
 348             !fill_grent_mem(domain, group_rid, name_type,
 349                             &state->response.data.gr.num_gr_mem,
 350                             &gr_mem, &gr_mem_len))
 351                 return WINBINDD_ERROR;
 352
 353         /* Group membership lives at start of extra data */
 354
 355         state->response.data.gr.gr_mem_ofs = 0;
 356
 357         state->response.length += gr_mem_len;
 358         state->response.extra_data = gr_mem;
 359
 360         /* Update cached group info */
 361
 362         winbindd_store_gid_cache_entry(domain, state->request.data.gid,
 363                                        &state->response.data.gr,
 364                                        state->response.extra_data,
 365                                        gr_mem_len);
 366
 367         return WINBINDD_OK;
 368 }
 369
 370 /*
 371  * set/get/endgrent functions
 372  */
 373
 374 /* "Rewind" file pointer for group database enumeration */
 375
 376 enum winbindd_result winbindd_setgrent(struct winbindd_cli_state *state)
 377 {
 378         struct winbindd_domain *tmp;
 379
 380         DEBUG(3, ("[%5d]: setgrent\n", state->pid));
 381
 382         /* Check user has enabled this */
 383
 384         if (!lp_winbind_enum_groups())
 385                 return WINBINDD_ERROR;
 386
 387         /* Free old static data if it exists */
 388
 389         if (state->getgrent_state != NULL) {
 390                 free_getent_state(state->getgrent_state);
 391                 state->getgrent_state = NULL;
 392         }
 393
 394         /* Create sam pipes for each domain we know about */
 395
 396         if (domain_list == NULL)
 397                 get_domain_info();
 398
 399         for (tmp = domain_list; tmp != NULL; tmp = tmp->next) {
 400                 struct getent_state *domain_state;
 401
 402                 /* Skip domains other than WINBINDD_DOMAIN environment
 403                    variable */
 404
 405                 if ((strcmp(state->request.domain, "") != 0) &&
 406                     !check_domain_env(state->request.domain, tmp->name))
 407                         continue;
 408
 409                 /* Create a state record for this domain */
 410
 411                 if ((domain_state = (struct getent_state *)
 412                      malloc(sizeof(struct getent_state))) == NULL)
 413                         return WINBINDD_ERROR;
 414
 415                 ZERO_STRUCTP(domain_state);
 416
 417                 domain_state->domain = tmp;
 418
 419                 /* Add to list of open domains */
 420
 421                 DLIST_ADD(state->getgrent_state, domain_state);
 422         }
 423
 424         return WINBINDD_OK;
 425 }
 426
 427 /* Close file pointer to ntdom group database */
 428
 429 enum winbindd_result winbindd_endgrent(struct winbindd_cli_state *state)
 430 {
 431         DEBUG(3, ("[%5d]: endgrent\n", state->pid));
 432
 433         free_getent_state(state->getgrent_state);
 434         state->getgrent_state = NULL;
 435
 436         return WINBINDD_OK;
 437 }
 438
 439 /* Get the list of domain groups and domain aliases for a domain.  We fill in
 440    the sam_entries and num_sam_entries fields with domain group information.
 441    The dispinfo_ndx field is incremented to the index of the next group to
 442    fetch. Return True if some groups were returned, False otherwise. */
 443
 444 #define MAX_FETCH_SAM_ENTRIES 100
 445
 446 static BOOL get_sam_group_entries(struct getent_state *ent)
 447 {
 448         NTSTATUS status;
 449         uint32 num_entries;
 450         struct acct_info *name_list = NULL, *tnl;
 451         TALLOC_CTX *mem_ctx;
 452         BOOL result = False;
 453
 454         if (ent->got_all_sam_entries)
 455                 return False;
 456
 457 #if 0
 458         if (winbindd_fetch_group_cache(ent->domain,
 459                                        &ent->sam_entries,
 460                                        &ent->num_sam_entries))
 461                 return True;
 462 #endif
 463
 464         if (!(mem_ctx = talloc_init()))
 465                 return False;
 466
 467         /* Free any existing group info */
 468
 469         SAFE_FREE(ent->sam_entries);
 470         ent->num_sam_entries = 0;
 471
 472         /* Enumerate domain groups */
 473
 474         do {
 475                 struct acct_info *sam_grp_entries = NULL;
 476                 uint32 des_access = SEC_RIGHTS_MAXIMUM_ALLOWED;
 477                 CLI_POLICY_HND *hnd;
 478                 POLICY_HND dom_pol;
 479
 480                 num_entries = 0;
 481
 482                 if (!(hnd = cm_get_sam_handle(ent->domain->name)))
 483                         break;
 484
 485                 status = cli_samr_open_domain(hnd->cli, mem_ctx,
 486                                               &hnd->pol, des_access,
 487                                               &ent->domain->sid, &dom_pol);
 488
 489                 if (!NT_STATUS_IS_OK(status))
 490                         break;
 491
 492                 status = cli_samr_enum_dom_groups(
 493                         hnd->cli, mem_ctx, &dom_pol,
 494                         &ent->grp_query_start_ndx,
 495                         0x8000, /* buffer size? */
 496                         (struct acct_info **) &sam_grp_entries, &num_entries);
 497
 498                 cli_samr_close(hnd->cli, mem_ctx, &dom_pol);
 499
 500                 /* Copy entries into return buffer */
 501
 502                 if (num_entries) {
 503
 504                         tnl = Realloc(name_list,
 505                                     sizeof(struct acct_info) *
 506                                     (ent->num_sam_entries +
 507                                      num_entries));
 508
 509                         if (tnl == NULL) {
 510                                 DEBUG(0,("get_sam_group_entries: unable to "
 511                                          "realloc a structure!\n"));
 512                                 SAFE_FREE(name_list);
 513
 514                                 goto done;
 515                         } else
 516                                 name_list = tnl;
 517
 518                         memcpy(&name_list[ent->num_sam_entries],
 519                                sam_grp_entries,
 520                                num_entries * sizeof(struct acct_info));
 521                 }
 522
 523                 ent->num_sam_entries += num_entries;
 524
 525                 if (NT_STATUS_V(status) != NT_STATUS_V(STATUS_MORE_ENTRIES))
 526                         break;
 527
 528         } while (ent->num_sam_entries < MAX_FETCH_SAM_ENTRIES);
 529
 530 #if 0
 531         /* Fill cache with received entries */
 532
 533         winbindd_store_group_cache(ent->domain, ent->sam_entries,
 534                                    ent->num_sam_entries);
 535 #endif
 536
 537         /* Fill in remaining fields */
 538
 539         ent->sam_entries = name_list;
 540         ent->sam_entry_index = 0;
 541         ent->got_all_sam_entries = (NT_STATUS_V(status) !=
 542                                     NT_STATUS_V(STATUS_MORE_ENTRIES));
 543
 544         result = (ent->num_sam_entries > 0);
 545
 546  done:
 547         talloc_destroy(mem_ctx);
 548
 549         return result;
 550 }
 551
 552 /* Fetch next group entry from ntdom database */
 553
 554 #define MAX_GETGRENT_GROUPS 500
 555
 556 enum winbindd_result winbindd_getgrent(struct winbindd_cli_state *state)
 557 {
 558         struct getent_state *ent;
 559         struct winbindd_gr *group_list = NULL;
 560         int num_groups, group_list_ndx = 0, i, gr_mem_list_len = 0;
 561         char *sep, *new_extra_data, *gr_mem_list = NULL;
 562
 563         DEBUG(3, ("[%5d]: getgrent\n", state->pid));
 564
 565         /* Check user has enabled this */
 566
 567         if (!lp_winbind_enum_groups())
 568                 return WINBINDD_ERROR;
 569
 570         num_groups = MIN(MAX_GETGRENT_GROUPS, state->request.data.num_entries);
 571
 572         if ((state->response.extra_data =
 573              malloc(num_groups * sizeof(struct winbindd_gr))) == NULL)
 574                 return WINBINDD_ERROR;
 575
 576         state->response.data.num_entries = 0;
 577
 578         group_list = (struct winbindd_gr *)state->response.extra_data;
 579         sep = lp_winbind_separator();
 580
 581         if (!(ent = state->getgrent_state))
 582                 return WINBINDD_ERROR;
 583
 584         /* Start sending back groups */
 585
 586         for (i = 0; i < num_groups; i++) {
 587                 struct acct_info *name_list = NULL;
 588                 fstring domain_group_name;
 589                 uint32 result;
 590                 gid_t group_gid;
 591
 592                 /* Do we need to fetch another chunk of groups? */
 593
 594         tryagain:
 595
 596                 DEBUG(10, ("getgrent(): entry_index = %d, num_entries = %d\n",
 597                            ent->sam_entry_index, ent->num_sam_entries));
 598
 599                 if (ent->num_sam_entries == ent->sam_entry_index) {
 600
 601                         while(ent && !get_sam_group_entries(ent)) {
 602                                 struct getent_state *next_ent;
 603
 604                                 DEBUG(10, ("getgrent(): freeing state info for "
 605                                            "domain %s\n", ent->domain->name));
 606
 607                                 /* Free state information for this domain */
 608
 609                                 SAFE_FREE(ent->sam_entries);
 610
 611                                 next_ent = ent->next;
 612                                 DLIST_REMOVE(state->getgrent_state, ent);
 613
 614                                 SAFE_FREE(ent);
 615                                 ent = next_ent;
 616                         }
 617
 618                         /* No more domains */
 619
 620                         if (!ent)
 621                                 break;
 622                 }
 623
 624                 name_list = ent->sam_entries;
 625
 626                 /* Lookup group info */
 627
 628                 if (!winbindd_idmap_get_gid_from_rid(
 629                         ent->domain->name,
 630                         name_list[ent->sam_entry_index].rid,
 631                         &group_gid)) {
 632
 633                         DEBUG(1, ("getgrent(): could not look up gid for group %s\n",
 634                                   name_list[ent->sam_entry_index].acct_name));
 635
 636                         ent->sam_entry_index++;
 637                         goto tryagain;
 638                 }
 639
 640                 DEBUG(10, ("getgrent(): got gid %d for group %x\n", group_gid,
 641                            name_list[ent->sam_entry_index].rid));
 642
 643                 /* Fill in group entry */
 644
 645                 slprintf(domain_group_name, sizeof(domain_group_name) - 1,
 646                          "%s%s%s", ent->domain->name, lp_winbind_separator(),
 647                          name_list[ent->sam_entry_index].acct_name);
 648
 649                 result = fill_grent(&group_list[group_list_ndx],
 650                                     domain_group_name, group_gid);
 651
 652                 /* Fill in group membership entry */
 653
 654                 if (result) {
 655                         int gr_mem_len;
 656                         char *gr_mem, *new_gr_mem_list;
 657
 658                         /* Get group membership */
 659
 660                         result = fill_grent_mem(
 661                                 ent->domain,
 662                                 name_list[ent->sam_entry_index].rid,
 663                                 SID_NAME_DOM_GRP,
 664                                 &group_list[group_list_ndx].num_gr_mem,
 665                                 &gr_mem, &gr_mem_len);
 666
 667                         /* Append to group membership list */
 668
 669                         new_gr_mem_list = Realloc(
 670                                 gr_mem_list,
 671                                 gr_mem_list_len + gr_mem_len);
 672
 673                         if (!new_gr_mem_list && (group_list[group_list_ndx].num_gr_mem != 0)) {
 674                                 DEBUG(0, ("getgrent(): out of memory\n"));
 675                                 SAFE_FREE(gr_mem_list);
 676                                 gr_mem_list_len = 0;
 677                                 break;
 678                         }
 679
 680                         DEBUG(10, ("getgrent(): list_len = %d, mem_len = %d\n",
 681                                    gr_mem_list_len, gr_mem_len));
 682
 683                         gr_mem_list = new_gr_mem_list;
 684
 685                         memcpy(&gr_mem_list[gr_mem_list_len], gr_mem,
 686                                gr_mem_len);
 687
 688                         SAFE_FREE(gr_mem);
 689
 690                         group_list[group_list_ndx].gr_mem_ofs =
 691                                 gr_mem_list_len;
 692
 693                         gr_mem_list_len += gr_mem_len;
 694                 }
 695
 696                 ent->sam_entry_index++;
 697
 698                 /* Add group to return list */
 699
 700                 if (result) {
 701
 702                         DEBUG(10, ("getgrent(): adding group num_entries = %d\n",
 703                                    state->response.data.num_entries));
 704
 705                         group_list_ndx++;
 706                         state->response.data.num_entries++;
 707
 708                         state->response.length +=
 709                                 sizeof(struct winbindd_gr);
 710
 711                 } else {
 712                         DEBUG(0, ("could not lookup domain group %s\n",
 713                                   domain_group_name));
 714                 }
 715         }
 716
 717         /* Copy the list of group memberships to the end of the extra data */
 718
 719         if (group_list_ndx == 0)
 720                 goto done;
 721
 722         new_extra_data = Realloc(
 723                 state->response.extra_data,
 724                 group_list_ndx * sizeof(struct winbindd_gr) + gr_mem_list_len);
 725
 726         if (!new_extra_data) {
 727                 DEBUG(0, ("out of memory\n"));
 728                 group_list_ndx = 0;
 729                 SAFE_FREE(state->response.extra_data);
 730                 SAFE_FREE(gr_mem_list);
 731
 732                 return WINBINDD_ERROR;
 733         }
 734
 735         state->response.extra_data = new_extra_data;
 736
 737         memcpy(&((char *)state->response.extra_data)
 738                [group_list_ndx * sizeof(struct winbindd_gr)],
 739                gr_mem_list, gr_mem_list_len);
 740
 741         SAFE_FREE(gr_mem_list);
 742
 743         state->response.length += gr_mem_list_len;
 744
 745         DEBUG(10, ("getgrent(): returning %d groups, length = %d\n",
 746                    group_list_ndx, gr_mem_list_len));
 747
 748         /* Out of domains */
 749
 750  done:
 751         return (group_list_ndx > 0) ? WINBINDD_OK : WINBINDD_ERROR;
 752 }
 753
 754 /* List domain groups without mapping to unix ids */
 755
 756 enum winbindd_result winbindd_list_groups(struct winbindd_cli_state *state)
 757 {
 758         uint32 total_entries = 0;
 759         uint32 num_domain_entries;
 760         struct winbindd_domain *domain;
 761         struct getent_state groups;
 762         char *extra_data = NULL;
 763         char *ted = NULL;
 764         int extra_data_len = 0, i;
 765         void *sam_entries = NULL;
 766
 767         DEBUG(3, ("[%5d]: list groups\n", state->pid));
 768
 769         /* Enumerate over trusted domains */
 770
 771         ZERO_STRUCT(groups);
 772
 773         if (domain_list == NULL)
 774                 get_domain_info();
 775
 776         for (domain = domain_list; domain; domain = domain->next) {
 777
 778                 /* Skip domains other than WINBINDD_DOMAIN environment
 779                    variable */
 780
 781                 if ((strcmp(state->request.domain, "") != 0) &&
 782                     !check_domain_env(state->request.domain, domain->name))
 783                         continue;
 784
 785                 /* Get list of sam groups */
 786
 787                 ZERO_STRUCT(groups);
 788                 groups.domain = domain;
 789
 790                 /*
 791                  * iterate through all groups
 792                  * total_entries:  maintains a total count over **all domains**
 793                  * num_domain_entries:  is the running count for this domain
 794                  */
 795
 796                 num_domain_entries = 0;
 797
 798                 while (get_sam_group_entries(&groups)) {
 799                         int new_size;
 800                         int offset;
 801
 802                         offset = sizeof(struct acct_info) * num_domain_entries;
 803                         new_size = sizeof(struct acct_info)
 804                                 * (groups.num_sam_entries + num_domain_entries);
 805                         sam_entries = Realloc(sam_entries, new_size);
 806
 807                         if (!sam_entries)
 808                                 return WINBINDD_ERROR;
 809
 810                         num_domain_entries += groups.num_sam_entries;
 811                         memcpy (((char *)sam_entries)+offset,
 812                                 groups.sam_entries,
 813                                 sizeof(struct acct_info) *
 814                                 groups.num_sam_entries);
 815
 816                         groups.sam_entries = NULL;
 817                         groups.num_sam_entries = 0;
 818                 }
 819
 820                 /* skip remainder of loop if we idn;t retrieve any groups */
 821
 822                 if (num_domain_entries == 0)
 823                         continue;
 824
 825                 /* setup the groups struct to contain all the groups
 826                    retrieved for this domain */
 827
 828                 groups.num_sam_entries = num_domain_entries;
 829                 groups.sam_entries = sam_entries;
 830
 831                 /* keep track the of the total number of groups seen so
 832                    far over all domains */
 833
 834                 total_entries += groups.num_sam_entries;
 835
 836                 /* Allocate some memory for extra data.  Note that we limit
 837                    account names to sizeof(fstring) = 128 characters.  */
 838
 839                 ted = Realloc(extra_data, sizeof(fstring) * total_entries);
 840
 841                 if (!ted) {
 842                         DEBUG(0,("winbindd_list_groups: failed to enlarge "
 843                                  "buffer!\n"));
 844                         SAFE_FREE(extra_data);
 845                         return WINBINDD_ERROR;
 846                 } else
 847                         extra_data = ted;
 848
 849                 /* Pack group list into extra data fields */
 850
 851                 for (i = 0; i < groups.num_sam_entries; i++) {
 852                         char *group_name = ((struct acct_info *)
 853                                             groups.sam_entries)[i].acct_name;
 854                         fstring name;
 855
 856                         /* Convert unistring to ascii */
 857
 858                         snprintf(name, sizeof(name), "%s%s%s", domain->name,
 859                                 lp_winbind_separator(), group_name);
 860
 861                         /* Append to extra data */
 862
 863                         memcpy(&extra_data[extra_data_len], name,
 864                                strlen(name));
 865
 866                         extra_data_len += strlen(name);
 867
 868                         extra_data[extra_data_len++] = ',';
 869                 }
 870         }
 871
 872         /* Assign extra_data fields in response structure */
 873
 874         if (extra_data) {
 875                 extra_data[extra_data_len - 1] = '\0';
 876                 state->response.extra_data = extra_data;
 877                 state->response.length += extra_data_len;
 878         }
 879
 880         /* No domains may have responded but that's still OK so don't
 881            return an error. */
 882
 883         return WINBINDD_OK;
 884 }
 885
 886 /* Get user supplementary groups.  This is much quicker than trying to
 887    invert the groups database. */
 888
 889 enum winbindd_result winbindd_getgroups(struct winbindd_cli_state *state)
 890 {
 891         fstring name_domain, name_user, name;
 892         DOM_SID user_sid;
 893         enum SID_NAME_USE name_type;
 894         uint32 user_rid, num_groups, num_gids;
 895         DOM_GID *user_groups = NULL;
 896         struct winbindd_domain *domain;
 897         enum winbindd_result result;
 898         gid_t *gid_list;
 899         int i;
 900
 901         DEBUG(3, ("[%5d]: getgroups %s\n", state->pid,
 902                   state->request.data.username));
 903
 904         /* Parse domain and username */
 905
 906         parse_domain_user(state->request.data.username, name_domain,
 907                           name_user);
 908
 909         /* Reject names that don't have a domain - i.e name_domain contains
 910            the entire name. */
 911
 912         if (strequal(name_domain, ""))
 913                 return WINBINDD_ERROR;
 914
 915         /* Get info for the domain */
 916
 917         if ((domain = find_domain_from_name(name_domain)) == NULL) {
 918                 DEBUG(0, ("could not find domain entry for domain %s\n",
 919                           name_domain));
 920                 return WINBINDD_ERROR;
 921         }
 922
 923         slprintf(name, sizeof(name) - 1, "%s\\%s", name_domain, name_user);
 924
 925         /* Get rid and name type from name.  The following costs 1 packet */
 926
 927         if (!winbindd_lookup_sid_by_name(name, &user_sid, &name_type)) {
 928                 DEBUG(1, ("user '%s' does not exist\n", name_user));
 929                 return WINBINDD_ERROR;
 930         }
 931
 932         if (name_type != SID_NAME_USER) {
 933                 DEBUG(1, ("name '%s' is not a user name: %d\n", name_user,
 934                           name_type));
 935                 return WINBINDD_ERROR;
 936         }
 937
 938         sid_split_rid(&user_sid, &user_rid);
 939
 940         if (!winbindd_lookup_usergroups(domain, user_rid, &num_groups,
 941                                         &user_groups))
 942                 return WINBINDD_ERROR;
 943
 944         /* Copy data back to client */
 945
 946         num_gids = 0;
 947         gid_list = malloc(sizeof(gid_t) * num_groups);
 948
 949         if (state->response.extra_data) {
 950                 result = WINBINDD_ERROR;
 951                 goto done;
 952         }
 953
 954         for (i = 0; i < num_groups; i++) {
 955                 if (!winbindd_idmap_get_gid_from_rid(
 956                         domain->name, user_groups[i].g_rid,
 957                         &gid_list[num_gids])) {
 958
 959                         DEBUG(1, ("unable to convert group rid %d to gid\n",
 960                                   user_groups[i].g_rid));
 961                         continue;
 962                 }
 963
 964                 num_gids++;
 965         }
 966
 967         state->response.data.num_entries = num_gids;
 968         state->response.extra_data = gid_list;
 969         state->response.length += num_gids * sizeof(gid_t);
 970
 971         result = WINBINDD_OK;
 972
 973  done:
 974         SAFE_FREE(user_groups);
 975
 976         return result;
 977 }