source3/nsswitch/winbindd_user.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3
   4    Winbind daemon - user related functions
   5
   6    Copyright (C) Tim Potter 2000
   7    Copyright (C) Jeremy Allison 2001.
   8    Copyright (C) Gerald (Jerry) Carter 2003.
   9
  10    This program is free software; you can redistribute it and/or modify
  11    it under the terms of the GNU General Public License as published by
  12    the Free Software Foundation; either version 2 of the License, or
  13    (at your option) any later version.
  14
  15    This program is distributed in the hope that it will be useful,
  16    but WITHOUT ANY WARRANTY; without even the implied warranty of
  17    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18    GNU General Public License for more details.
  19
  20    You should have received a copy of the GNU General Public License
  21    along with this program; if not, write to the Free Software
  22    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  23 */
  24
  25 #include "includes.h"
  26 #include "winbindd.h"
  27
  28 #undef DBGC_CLASS
  29 #define DBGC_CLASS DBGC_WINBIND
  30
  31 extern userdom_struct current_user_info;
  32
  33 static BOOL fillup_pw_field(const char *lp_template,
  34                             const char *username,
  35                             const char *domname,
  36                             uid_t uid,
  37                             gid_t gid,
  38                             const char *in,
  39                             fstring out)
  40 {
  41         char *templ;
  42
  43         if (out == NULL)
  44                 return False;
  45
  46         if (in && !strequal(in,"") && lp_security() == SEC_ADS && use_nss_info("sfu")) {
  47                 safe_strcpy(out, in, sizeof(fstring) - 1);
  48                 return True;
  49         }
  50
  51         /* Home directory and shell - use template config parameters.  The
  52            defaults are /tmp for the home directory and /bin/false for
  53            shell. */
  54
  55         /* The substitution of %U and %D in the 'template homedir' is done
  56            by alloc_sub_specified() below. */
  57
  58         templ = alloc_sub_specified(lp_template, username, domname, uid, gid);
  59
  60         if (!templ)
  61                 return False;
  62
  63         safe_strcpy(out, templ, sizeof(fstring) - 1);
  64         SAFE_FREE(templ);
  65
  66         return True;
  67
  68 }
  69 /* Fill a pwent structure with information we have obtained */
  70
  71 static BOOL winbindd_fill_pwent(char *dom_name, char *user_name,
  72                                 DOM_SID *user_sid, DOM_SID *group_sid,
  73                                 char *full_name, char *homedir, char *shell,
  74                                 struct winbindd_pw *pw)
  75 {
  76         fstring output_username;
  77         fstring sid_string;
  78
  79         if (!pw || !dom_name || !user_name)
  80                 return False;
  81
  82         /* Resolve the uid number */
  83
  84         if (!NT_STATUS_IS_OK(idmap_sid_to_uid(user_sid, &pw->pw_uid, 0))) {
  85                 DEBUG(1, ("error getting user id for sid %s\n", sid_to_string(sid_string, user_sid)));
  86                 return False;
  87         }
  88
  89         /* Resolve the gid number */
  90
  91         if (!NT_STATUS_IS_OK(idmap_sid_to_gid(group_sid, &pw->pw_gid, 0))) {
  92                 DEBUG(1, ("error getting group id for sid %s\n", sid_to_string(sid_string, group_sid)));
  93                 return False;
  94         }
  95
  96         strlower_m(user_name);
  97
  98         /* Username */
  99
 100         fill_domain_username(output_username, dom_name, user_name);
 101
 102         safe_strcpy(pw->pw_name, output_username, sizeof(pw->pw_name) - 1);
 103
 104         /* Full name (gecos) */
 105
 106         safe_strcpy(pw->pw_gecos, full_name, sizeof(pw->pw_gecos) - 1);
 107
 108         /* Home directory and shell - use template config parameters.  The
 109            defaults are /tmp for the home directory and /bin/false for
 110            shell. */
 111
 112         /* The substitution of %U and %D in the 'template homedir' is done
 113            by alloc_sub_specified() below. */
 114
 115         fstrcpy(current_user_info.domain, dom_name);
 116
 117         if (!fillup_pw_field(lp_template_homedir(), user_name, dom_name,
 118                              pw->pw_uid, pw->pw_gid, homedir, pw->pw_dir))
 119                 return False;
 120
 121         if (!fillup_pw_field(lp_template_shell(), user_name, dom_name,
 122                              pw->pw_uid, pw->pw_gid, shell, pw->pw_shell))
 123                 return False;
 124
 125         /* Password - set to "*" as we can't generate anything useful here.
 126            Authentication can be done using the pam_winbind module. */
 127
 128         safe_strcpy(pw->pw_passwd, "*", sizeof(pw->pw_passwd) - 1);
 129
 130         return True;
 131 }
 132
 133 /* Wrapper for domain->methods->query_user, only on the parent->child pipe */
 134
 135 enum winbindd_result winbindd_dual_userinfo(struct winbindd_domain *domain,
 136                                             struct winbindd_cli_state *state)
 137 {
 138         DOM_SID sid;
 139         WINBIND_USERINFO user_info;
 140         NTSTATUS status;
 141
 142         /* Ensure null termination */
 143         state->request.data.sid[sizeof(state->request.data.sid)-1]='\0';
 144
 145         DEBUG(3, ("[%5lu]: lookupsid %s\n", (unsigned long)state->pid,
 146                   state->request.data.sid));
 147
 148         if (!string_to_sid(&sid, state->request.data.sid)) {
 149                 DEBUG(5, ("%s not a SID\n", state->request.data.sid));
 150                 return WINBINDD_ERROR;
 151         }
 152
 153         status = domain->methods->query_user(domain, state->mem_ctx,
 154                                              &sid, &user_info);
 155         if (!NT_STATUS_IS_OK(status)) {
 156                 DEBUG(1, ("error getting user info for sid %s\n",
 157                           sid_string_static(&sid)));
 158                 return WINBINDD_ERROR;
 159         }
 160
 161         fstrcpy(state->response.data.user_info.acct_name, user_info.acct_name);
 162         fstrcpy(state->response.data.user_info.full_name, user_info.full_name);
 163         fstrcpy(state->response.data.user_info.homedir, user_info.homedir);
 164         fstrcpy(state->response.data.user_info.shell, user_info.shell);
 165         if (!sid_peek_check_rid(&domain->sid, &user_info.group_sid,
 166                                 &state->response.data.user_info.group_rid)) {
 167                 DEBUG(1, ("Could not extract group rid out of %s\n",
 168                           sid_string_static(&sid)));
 169                 return WINBINDD_ERROR;
 170         }
 171
 172         return WINBINDD_OK;
 173 }
 174
 175 struct getpwsid_state {
 176         struct winbindd_cli_state *state;
 177         struct winbindd_domain *domain;
 178         char *username;
 179         char *fullname;
 180         char *homedir;
 181         char *shell;
 182         DOM_SID user_sid;
 183         uid_t uid;
 184         DOM_SID group_sid;
 185         gid_t gid;
 186 };
 187
 188 static void getpwsid_queryuser_recv(void *private_data, BOOL success,
 189                                     const char *acct_name,
 190                                     const char *full_name,
 191                                     const char *homedir,
 192                                     const char *shell,
 193                                     uint32 group_rid);
 194 static void getpwsid_sid2uid_recv(void *private_data, BOOL success, uid_t uid);
 195 static void getpwsid_sid2gid_recv(void *private_data, BOOL success, gid_t gid);
 196
 197 static void winbindd_getpwsid(struct winbindd_cli_state *state,
 198                               const DOM_SID *sid)
 199 {
 200         struct getpwsid_state *s;
 201
 202         s = TALLOC_P(state->mem_ctx, struct getpwsid_state);
 203         if (s == NULL) {
 204                 DEBUG(0, ("talloc failed\n"));
 205                 goto error;
 206         }
 207
 208         s->state = state;
 209         s->domain = find_domain_from_sid_noinit(sid);
 210         if (s->domain == NULL) {
 211                 DEBUG(3, ("Could not find domain for sid %s\n",
 212                           sid_string_static(sid)));
 213                 goto error;
 214         }
 215
 216         sid_copy(&s->user_sid, sid);
 217
 218         query_user_async(s->state->mem_ctx, s->domain, sid,
 219                          getpwsid_queryuser_recv, s);
 220         return;
 221
 222  error:
 223         request_error(state);
 224 }
 225
 226 static void getpwsid_queryuser_recv(void *private_data, BOOL success,
 227                                     const char *acct_name,
 228                                     const char *full_name,
 229                                     const char *homedir,
 230                                     const char *shell,
 231                                     uint32 group_rid)
 232 {
 233         fstring username;
 234         struct getpwsid_state *s =
 235                 talloc_get_type_abort(private_data, struct getpwsid_state);
 236
 237         if (!success) {
 238                 DEBUG(5, ("Could not query user %s\\%s\n", s->domain->name,
 239                           s->username));
 240                 request_error(s->state);
 241                 return;
 242         }
 243
 244         fstrcpy( username, acct_name );
 245         strlower_m( username );
 246         s->username = talloc_strdup(s->state->mem_ctx, username);
 247         s->fullname = talloc_strdup(s->state->mem_ctx, full_name);
 248         s->homedir = talloc_strdup(s->state->mem_ctx, homedir);
 249         s->shell = talloc_strdup(s->state->mem_ctx, shell);
 250         sid_copy(&s->group_sid, &s->domain->sid);
 251         sid_append_rid(&s->group_sid, group_rid);
 252
 253         winbindd_sid2uid_async(s->state->mem_ctx, &s->user_sid,
 254                                getpwsid_sid2uid_recv, s);
 255 }
 256
 257 static void getpwsid_sid2uid_recv(void *private_data, BOOL success, uid_t uid)
 258 {
 259         struct getpwsid_state *s =
 260                 talloc_get_type_abort(private_data, struct getpwsid_state);
 261
 262         if (!success) {
 263                 DEBUG(5, ("Could not query user's %s\\%s uid\n",
 264                           s->domain->name, s->username));
 265                 request_error(s->state);
 266                 return;
 267         }
 268
 269         s->uid = uid;
 270         winbindd_sid2gid_async(s->state->mem_ctx, &s->group_sid,
 271                                getpwsid_sid2gid_recv, s);
 272 }
 273
 274 static void getpwsid_sid2gid_recv(void *private_data, BOOL success, gid_t gid)
 275 {
 276         struct getpwsid_state *s =
 277                 talloc_get_type_abort(private_data, struct getpwsid_state);
 278         struct winbindd_pw *pw;
 279         fstring output_username;
 280
 281         if (!success) {
 282                 DEBUG(5, ("Could not query user's %s\\%s\n gid",
 283                           s->domain->name, s->username));
 284                 goto failed;
 285         }
 286
 287         s->gid = gid;
 288
 289         pw = &s->state->response.data.pw;
 290         pw->pw_uid = s->uid;
 291         pw->pw_gid = s->gid;
 292         fill_domain_username(output_username, s->domain->name, s->username);
 293         safe_strcpy(pw->pw_name, output_username, sizeof(pw->pw_name) - 1);
 294         safe_strcpy(pw->pw_gecos, s->fullname, sizeof(pw->pw_gecos) - 1);
 295
 296         fstrcpy(current_user_info.domain, s->domain->name);
 297
 298         if (!fillup_pw_field(lp_template_homedir(), s->username, s->domain->name,
 299                              pw->pw_uid, pw->pw_gid, s->homedir, pw->pw_dir)) {
 300                 DEBUG(5, ("Could not compose homedir\n"));
 301                 goto failed;
 302         }
 303
 304         if (!fillup_pw_field(lp_template_shell(), s->username, s->domain->name,
 305                              pw->pw_uid, pw->pw_gid, s->shell, pw->pw_shell)) {
 306                 DEBUG(5, ("Could not compose shell\n"));
 307                 goto failed;
 308         }
 309
 310         /* Password - set to "*" as we can't generate anything useful here.
 311            Authentication can be done using the pam_winbind module. */
 312
 313         safe_strcpy(pw->pw_passwd, "*", sizeof(pw->pw_passwd) - 1);
 314
 315         request_ok(s->state);
 316         return;
 317
 318  failed:
 319         request_error(s->state);
 320 }
 321
 322 /* Return a password structure from a username.  */
 323
 324 static void getpwnam_name2sid_recv(void *private_data, BOOL success,
 325                                    const DOM_SID *sid, enum SID_NAME_USE type);
 326
 327 void winbindd_getpwnam(struct winbindd_cli_state *state)
 328 {
 329         struct winbindd_domain *domain;
 330         fstring domname, username;
 331
 332         /* Ensure null termination */
 333         state->request.data.username[sizeof(state->request.data.username)-1]='\0';
 334
 335         DEBUG(3, ("[%5lu]: getpwnam %s\n", (unsigned long)state->pid,
 336                   state->request.data.username));
 337
 338         if (!parse_domain_user(state->request.data.username, domname,
 339                                username)) {
 340                 DEBUG(5, ("Could not parse domain user: %s\n",
 341                           state->request.data.username));
 342                 request_error(state);
 343                 return;
 344         }
 345
 346         /* Get info for the domain */
 347
 348         domain = find_domain_from_name(domname);
 349
 350         if (domain == NULL) {
 351                 DEBUG(7, ("could not find domain entry for domain %s\n",
 352                           domname));
 353                 request_error(state);
 354                 return;
 355         }
 356
 357         if ( strequal(domname, lp_workgroup()) && lp_winbind_trusted_domains_only() ) {
 358                 DEBUG(7,("winbindd_getpwnam: My domain -- rejecting getpwnam() for %s\\%s.\n",
 359                         domname, username));
 360                 request_error(state);
 361                 return;
 362         }
 363
 364         /* Get rid and name type from name.  The following costs 1 packet */
 365
 366         winbindd_lookupname_async(state->mem_ctx, domname, username,
 367                                   getpwnam_name2sid_recv, state);
 368 }
 369
 370 static void getpwnam_name2sid_recv(void *private_data, BOOL success,
 371                                    const DOM_SID *sid, enum SID_NAME_USE type)
 372 {
 373         struct winbindd_cli_state *state = private_data;
 374
 375         if (!success) {
 376                 DEBUG(5, ("Could not lookup name for user %s\n",
 377                           state->request.data.username));
 378                 request_error(state);
 379                 return;
 380         }
 381
 382         if ((type != SID_NAME_USER) && (type != SID_NAME_COMPUTER)) {
 383                 DEBUG(5, ("%s is not a user\n", state->request.data.username));
 384                 request_error(state);
 385                 return;
 386         }
 387
 388         winbindd_getpwsid(state, sid);
 389 }
 390
 391 /* Return a password structure given a uid number */
 392
 393 void winbindd_getpwuid(struct winbindd_cli_state *state)
 394 {
 395         DOM_SID user_sid;
 396         NTSTATUS status;
 397
 398         /* Bug out if the uid isn't in the winbind range */
 399
 400         if ((state->request.data.uid < server_state.uid_low ) ||
 401             (state->request.data.uid > server_state.uid_high)) {
 402                 request_error(state);
 403                 return;
 404         }
 405
 406         DEBUG(3, ("[%5lu]: getpwuid %lu\n", (unsigned long)state->pid,
 407                   (unsigned long)state->request.data.uid));
 408
 409         status = idmap_uid_to_sid(&user_sid, state->request.data.uid,
 410                                   ID_QUERY_ONLY | ID_CACHE_ONLY);
 411
 412         if (!NT_STATUS_IS_OK(status)) {
 413                 DEBUG(5, ("Could not find SID for uid %lu\n",
 414                           (unsigned long)state->request.data.uid));
 415                 request_error(state);
 416                 return;
 417         }
 418
 419         winbindd_getpwsid(state, &user_sid);
 420 }
 421
 422 /*
 423  * set/get/endpwent functions
 424  */
 425
 426 /* Rewind file pointer for ntdom passwd database */
 427
 428 static BOOL winbindd_setpwent_internal(struct winbindd_cli_state *state)
 429 {
 430         struct winbindd_domain *domain;
 431
 432         DEBUG(3, ("[%5lu]: setpwent\n", (unsigned long)state->pid));
 433
 434         /* Check user has enabled this */
 435
 436         if (!lp_winbind_enum_users()) {
 437                 return False;
 438         }
 439
 440         /* Free old static data if it exists */
 441
 442         if (state->getpwent_state != NULL) {
 443                 free_getent_state(state->getpwent_state);
 444                 state->getpwent_state = NULL;
 445         }
 446
 447 #if 0   /* JERRY */
 448         /* add any local users we have */
 449
 450         if ( (domain_state = (struct getent_state *)malloc(sizeof(struct getent_state))) == NULL )
 451                 return False;
 452
 453         ZERO_STRUCTP(domain_state);
 454
 455         /* Add to list of open domains */
 456
 457         DLIST_ADD(state->getpwent_state, domain_state);
 458 #endif
 459
 460         /* Create sam pipes for each domain we know about */
 461
 462         for(domain = domain_list(); domain != NULL; domain = domain->next) {
 463                 struct getent_state *domain_state;
 464
 465
 466                 /* don't add our domaina if we are a PDC or if we
 467                    are a member of a Samba domain */
 468
 469                 if ( (IS_DC || lp_winbind_trusted_domains_only())
 470                         && strequal(domain->name, lp_workgroup()) )
 471                 {
 472                         continue;
 473                 }
 474
 475                 /* Create a state record for this domain */
 476
 477                 if ((domain_state = SMB_MALLOC_P(struct getent_state)) == NULL) {
 478                         DEBUG(0, ("malloc failed\n"));
 479                         return False;
 480                 }
 481
 482                 ZERO_STRUCTP(domain_state);
 483
 484                 fstrcpy(domain_state->domain_name, domain->name);
 485
 486                 /* Add to list of open domains */
 487
 488                 DLIST_ADD(state->getpwent_state, domain_state);
 489         }
 490
 491         state->getpwent_initialized = True;
 492         return True;
 493 }
 494
 495 void winbindd_setpwent(struct winbindd_cli_state *state)
 496 {
 497         if (winbindd_setpwent_internal(state)) {
 498                 request_ok(state);
 499         } else {
 500                 request_error(state);
 501         }
 502 }
 503
 504 /* Close file pointer to ntdom passwd database */
 505
 506 void winbindd_endpwent(struct winbindd_cli_state *state)
 507 {
 508         DEBUG(3, ("[%5lu]: endpwent\n", (unsigned long)state->pid));
 509
 510         free_getent_state(state->getpwent_state);
 511         state->getpwent_initialized = False;
 512         state->getpwent_state = NULL;
 513         request_ok(state);
 514 }
 515
 516 /* Get partial list of domain users for a domain.  We fill in the sam_entries,
 517    and num_sam_entries fields with domain user information.  The dispinfo_ndx
 518    field is incremented to the index of the next user to fetch.  Return True if
 519    some users were returned, False otherwise. */
 520
 521 static BOOL get_sam_user_entries(struct getent_state *ent, TALLOC_CTX *mem_ctx)
 522 {
 523         NTSTATUS status;
 524         uint32 num_entries;
 525         WINBIND_USERINFO *info;
 526         struct getpwent_user *name_list = NULL;
 527         BOOL result = False;
 528         struct winbindd_domain *domain;
 529         struct winbindd_methods *methods;
 530         unsigned int i;
 531
 532         if (ent->num_sam_entries)
 533                 return False;
 534
 535         if (!(domain = find_domain_from_name(ent->domain_name))) {
 536                 DEBUG(3, ("no such domain %s in get_sam_user_entries\n",
 537                           ent->domain_name));
 538                 return False;
 539         }
 540
 541         methods = domain->methods;
 542
 543         /* Free any existing user info */
 544
 545         SAFE_FREE(ent->sam_entries);
 546         ent->num_sam_entries = 0;
 547
 548         /* Call query_user_list to get a list of usernames and user rids */
 549
 550         num_entries = 0;
 551
 552         status = methods->query_user_list(domain, mem_ctx, &num_entries,
 553                                           &info);
 554
 555         if (num_entries) {
 556                 name_list = SMB_REALLOC_ARRAY(name_list, struct getpwent_user, ent->num_sam_entries + num_entries);
 557
 558                 if (!name_list) {
 559                         DEBUG(0,("get_sam_user_entries realloc failed.\n"));
 560                         goto done;
 561                 }
 562         }
 563
 564         for (i = 0; i < num_entries; i++) {
 565                 /* Store account name and gecos */
 566                 if (!info[i].acct_name) {
 567                         fstrcpy(name_list[ent->num_sam_entries + i].name, "");
 568                 } else {
 569                         fstrcpy(name_list[ent->num_sam_entries + i].name,
 570                                 info[i].acct_name);
 571                 }
 572                 if (!info[i].full_name) {
 573                         fstrcpy(name_list[ent->num_sam_entries + i].gecos, "");
 574                 } else {
 575                         fstrcpy(name_list[ent->num_sam_entries + i].gecos,
 576                                 info[i].full_name);
 577                 }
 578                 if (!info[i].homedir) {
 579                         fstrcpy(name_list[ent->num_sam_entries + i].homedir, "");
 580                 } else {
 581                         fstrcpy(name_list[ent->num_sam_entries + i].homedir,
 582                                 info[i].homedir);
 583                 }
 584                 if (!info[i].shell) {
 585                         fstrcpy(name_list[ent->num_sam_entries + i].shell, "");
 586                 } else {
 587                         fstrcpy(name_list[ent->num_sam_entries + i].shell,
 588                                 info[i].shell);
 589                 }
 590
 591
 592                 /* User and group ids */
 593                 sid_copy(&name_list[ent->num_sam_entries+i].user_sid,
 594                          &info[i].user_sid);
 595                 sid_copy(&name_list[ent->num_sam_entries+i].group_sid,
 596                          &info[i].group_sid);
 597         }
 598
 599         ent->num_sam_entries += num_entries;
 600
 601         /* Fill in remaining fields */
 602
 603         ent->sam_entries = name_list;
 604         ent->sam_entry_index = 0;
 605         result = ent->num_sam_entries > 0;
 606
 607  done:
 608
 609         return result;
 610 }
 611
 612 /* Fetch next passwd entry from ntdom database */
 613
 614 #define MAX_GETPWENT_USERS 500
 615
 616 void winbindd_getpwent(struct winbindd_cli_state *state)
 617 {
 618         struct getent_state *ent;
 619         struct winbindd_pw *user_list;
 620         int num_users, user_list_ndx = 0, i;
 621
 622         DEBUG(3, ("[%5lu]: getpwent\n", (unsigned long)state->pid));
 623
 624         /* Check user has enabled this */
 625
 626         if (!lp_winbind_enum_users()) {
 627                 request_error(state);
 628                 return;
 629         }
 630
 631         /* Allocate space for returning a chunk of users */
 632
 633         num_users = MIN(MAX_GETPWENT_USERS, state->request.data.num_entries);
 634
 635         if ((state->response.extra_data = SMB_MALLOC_ARRAY(struct winbindd_pw, num_users)) == NULL) {
 636                 request_error(state);
 637                 return;
 638         }
 639
 640         memset(state->response.extra_data, 0, num_users *
 641                sizeof(struct winbindd_pw));
 642
 643         user_list = (struct winbindd_pw *)state->response.extra_data;
 644
 645         if (!state->getpwent_initialized)
 646                 winbindd_setpwent_internal(state);
 647
 648         if (!(ent = state->getpwent_state)) {
 649                 request_error(state);
 650                 return;
 651         }
 652
 653         /* Start sending back users */
 654
 655         for (i = 0; i < num_users; i++) {
 656                 struct getpwent_user *name_list = NULL;
 657                 uint32 result;
 658
 659                 /* Do we need to fetch another chunk of users? */
 660
 661                 if (ent->num_sam_entries == ent->sam_entry_index) {
 662
 663                         while(ent &&
 664                               !get_sam_user_entries(ent, state->mem_ctx)) {
 665                                 struct getent_state *next_ent;
 666
 667                                 /* Free state information for this domain */
 668
 669                                 SAFE_FREE(ent->sam_entries);
 670
 671                                 next_ent = ent->next;
 672                                 DLIST_REMOVE(state->getpwent_state, ent);
 673
 674                                 SAFE_FREE(ent);
 675                                 ent = next_ent;
 676                         }
 677
 678                         /* No more domains */
 679
 680                         if (!ent)
 681                                 break;
 682                 }
 683
 684                 name_list = ent->sam_entries;
 685
 686                 /* Lookup user info */
 687
 688                 result = winbindd_fill_pwent(
 689                         ent->domain_name,
 690                         name_list[ent->sam_entry_index].name,
 691                         &name_list[ent->sam_entry_index].user_sid,
 692                         &name_list[ent->sam_entry_index].group_sid,
 693                         name_list[ent->sam_entry_index].gecos,
 694                         name_list[ent->sam_entry_index].homedir,
 695                         name_list[ent->sam_entry_index].shell,
 696                         &user_list[user_list_ndx]);
 697
 698                 ent->sam_entry_index++;
 699
 700                 /* Add user to return list */
 701
 702                 if (result) {
 703
 704                         user_list_ndx++;
 705                         state->response.data.num_entries++;
 706                         state->response.length +=
 707                                 sizeof(struct winbindd_pw);
 708
 709                 } else
 710                         DEBUG(1, ("could not lookup domain user %s\n",
 711                                   name_list[ent->sam_entry_index].name));
 712         }
 713
 714         /* Out of domains */
 715
 716         if (user_list_ndx > 0)
 717                 request_ok(state);
 718         else
 719                 request_error(state);
 720 }
 721
 722 /* List domain users without mapping to unix ids */
 723
 724 void winbindd_list_users(struct winbindd_cli_state *state)
 725 {
 726         struct winbindd_domain *domain;
 727         WINBIND_USERINFO *info;
 728         const char *which_domain;
 729         uint32 num_entries = 0, total_entries = 0;
 730         char *extra_data = NULL;
 731         int extra_data_len = 0;
 732         enum winbindd_result rv = WINBINDD_ERROR;
 733
 734         DEBUG(3, ("[%5lu]: list users\n", (unsigned long)state->pid));
 735
 736         /* Ensure null termination */
 737         state->request.domain_name[sizeof(state->request.domain_name)-1]='\0';
 738         which_domain = state->request.domain_name;
 739
 740         /* Enumerate over trusted domains */
 741
 742         for (domain = domain_list(); domain; domain = domain->next) {
 743                 NTSTATUS status;
 744                 struct winbindd_methods *methods;
 745                 unsigned int i;
 746
 747                 /* if we have a domain name restricting the request and this
 748                    one in the list doesn't match, then just bypass the remainder
 749                    of the loop */
 750
 751                 if ( *which_domain && !strequal(which_domain, domain->name) )
 752                         continue;
 753
 754                 methods = domain->methods;
 755
 756                 /* Query display info */
 757                 status = methods->query_user_list(domain, state->mem_ctx,
 758                                                   &num_entries, &info);
 759
 760                 if (num_entries == 0)
 761                         continue;
 762
 763                 /* Allocate some memory for extra data */
 764                 total_entries += num_entries;
 765
 766                 extra_data = SMB_REALLOC(extra_data, sizeof(fstring) * total_entries);
 767
 768                 if (!extra_data) {
 769                         DEBUG(0,("failed to enlarge buffer!\n"));
 770                         goto done;
 771                 }
 772
 773                 /* Pack user list into extra data fields */
 774
 775                 for (i = 0; i < num_entries; i++) {
 776                         fstring acct_name, name;
 777
 778                         if (!info[i].acct_name) {
 779                                 fstrcpy(acct_name, "");
 780                         } else {
 781                                 fstrcpy(acct_name, info[i].acct_name);
 782                         }
 783
 784                         fill_domain_username(name, domain->name, acct_name);
 785
 786                                 /* Append to extra data */
 787                         memcpy(&extra_data[extra_data_len], name,
 788                                strlen(name));
 789                         extra_data_len += strlen(name);
 790                         extra_data[extra_data_len++] = ',';
 791                 }
 792         }
 793
 794         /* Assign extra_data fields in response structure */
 795
 796         if (extra_data) {
 797                 extra_data[extra_data_len - 1] = '\0';
 798                 state->response.extra_data = extra_data;
 799                 state->response.length += extra_data_len;
 800         }
 801
 802         /* No domains responded but that's still OK so don't return an
 803            error. */
 804
 805         rv = WINBINDD_OK;
 806
 807  done:
 808
 809         if (rv == WINBINDD_OK)
 810                 request_ok(state);
 811         else
 812                 request_error(state);
 813 }