source/winbindd/winbindd_async.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3
   4    Async helpers for blocking functions
   5
   6    Copyright (C) Volker Lendecke 2005
   7    Copyright (C) Gerald Carter 2006
   8
   9    The helpers always consist of three functions:
  10
  11    * A request setup function that takes the necessary parameters together
  12      with a continuation function that is to be called upon completion
  13
  14    * A private continuation function that is internal only. This is to be
  15      called by the lower-level functions in do_async(). Its only task is to
  16      properly call the continuation function named above.
  17
  18    * A worker function that is called inside the appropriate child process.
  19
  20    This program is free software; you can redistribute it and/or modify
  21    it under the terms of the GNU General Public License as published by
  22    the Free Software Foundation; either version 3 of the License, or
  23    (at your option) any later version.
  24
  25    This program is distributed in the hope that it will be useful,
  26    but WITHOUT ANY WARRANTY; without even the implied warranty of
  27    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  28    GNU General Public License for more details.
  29
  30    You should have received a copy of the GNU General Public License
  31    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  32 */
  33
  34 #include "includes.h"
  35 #include "winbindd.h"
  36
  37 #undef DBGC_CLASS
  38 #define DBGC_CLASS DBGC_WINBIND
  39
  40 struct do_async_state {
  41         TALLOC_CTX *mem_ctx;
  42         struct winbindd_request request;
  43         struct winbindd_response response;
  44         void (*cont)(TALLOC_CTX *mem_ctx,
  45                      bool success,
  46                      struct winbindd_response *response,
  47                      void *c, void *private_data);
  48         void *c, *private_data;
  49 };
  50
  51 static void do_async_recv(void *private_data, bool success)
  52 {
  53         struct do_async_state *state =
  54                 talloc_get_type_abort(private_data, struct do_async_state);
  55
  56         state->cont(state->mem_ctx, success, &state->response,
  57                     state->c, state->private_data);
  58 }
  59
  60 void do_async(TALLOC_CTX *mem_ctx, struct winbindd_child *child,
  61               const struct winbindd_request *request,
  62               void (*cont)(TALLOC_CTX *mem_ctx, bool success,
  63                            struct winbindd_response *response,
  64                            void *c, void *private_data),
  65               void *c, void *private_data)
  66 {
  67         struct do_async_state *state;
  68
  69         state = TALLOC_ZERO_P(mem_ctx, struct do_async_state);
  70         if (state == NULL) {
  71                 DEBUG(0, ("talloc failed\n"));
  72                 cont(mem_ctx, False, NULL, c, private_data);
  73                 return;
  74         }
  75
  76         state->mem_ctx = mem_ctx;
  77         state->request = *request;
  78         state->request.length = sizeof(state->request);
  79         state->cont = cont;
  80         state->c = c;
  81         state->private_data = private_data;
  82
  83         async_request(mem_ctx, child, &state->request,
  84                       &state->response, do_async_recv, state);
  85 }
  86
  87 void do_async_domain(TALLOC_CTX *mem_ctx, struct winbindd_domain *domain,
  88                      const struct winbindd_request *request,
  89                      void (*cont)(TALLOC_CTX *mem_ctx, bool success,
  90                                   struct winbindd_response *response,
  91                                   void *c, void *private_data),
  92                      void *c, void *private_data)
  93 {
  94         struct do_async_state *state;
  95
  96         state = TALLOC_ZERO_P(mem_ctx, struct do_async_state);
  97         if (state == NULL) {
  98                 DEBUG(0, ("talloc failed\n"));
  99                 cont(mem_ctx, False, NULL, c, private_data);
 100                 return;
 101         }
 102
 103         state->mem_ctx = mem_ctx;
 104         state->request = *request;
 105         state->request.length = sizeof(state->request);
 106         state->cont = cont;
 107         state->c = c;
 108         state->private_data = private_data;
 109
 110         async_domain_request(mem_ctx, domain, &state->request,
 111                              &state->response, do_async_recv, state);
 112 }
 113
 114 struct lookupsid_state {
 115         DOM_SID sid;
 116         void *caller_private_data;
 117 };
 118
 119
 120 static void lookupsid_recv2(TALLOC_CTX *mem_ctx, bool success,
 121                            struct winbindd_response *response,
 122                            void *c, void *private_data)
 123 {
 124         void (*cont)(void *priv, bool succ, const char *dom_name,
 125                      const char *name, enum lsa_SidType type) =
 126                 (void (*)(void *, bool, const char *, const char *,
 127                           enum lsa_SidType))c;
 128         struct lookupsid_state *s = talloc_get_type_abort(private_data,
 129                                                           struct lookupsid_state);
 130
 131         if (!success) {
 132                 DEBUG(5, ("Could not trigger lookupsid\n"));
 133                 cont(s->caller_private_data, False, NULL, NULL, SID_NAME_UNKNOWN);
 134                 return;
 135         }
 136
 137         if (response->result != WINBINDD_OK) {
 138                 DEBUG(5, ("lookupsid (forest root) returned an error\n"));
 139                 cont(s->caller_private_data, False, NULL, NULL, SID_NAME_UNKNOWN);
 140                 return;
 141         }
 142
 143         cont(s->caller_private_data, True, response->data.name.dom_name,
 144              response->data.name.name,
 145              (enum lsa_SidType)response->data.name.type);
 146 }
 147
 148 static void lookupsid_recv(TALLOC_CTX *mem_ctx, bool success,
 149                            struct winbindd_response *response,
 150                            void *c, void *private_data)
 151 {
 152         void (*cont)(void *priv, bool succ, const char *dom_name,
 153                      const char *name, enum lsa_SidType type) =
 154                 (void (*)(void *, bool, const char *, const char *,
 155                           enum lsa_SidType))c;
 156         struct lookupsid_state *s = talloc_get_type_abort(private_data,
 157                                                           struct lookupsid_state);
 158
 159         if (!success) {
 160                 DEBUG(5, ("Could not trigger lookupsid\n"));
 161                 cont(s->caller_private_data, False, NULL, NULL, SID_NAME_UNKNOWN);
 162                 return;
 163         }
 164
 165         if (response->result != WINBINDD_OK) {
 166                 /* Try again using the forest root */
 167                 struct winbindd_domain *root_domain = find_root_domain();
 168                 struct winbindd_request request;
 169
 170                 if ( !root_domain ) {
 171                         DEBUG(5,("lookupsid_recv: unable to determine forest root\n"));
 172                         cont(s->caller_private_data, False, NULL, NULL, SID_NAME_UNKNOWN);
 173                         return;
 174                 }
 175
 176                 ZERO_STRUCT(request);
 177                 request.cmd = WINBINDD_LOOKUPSID;
 178                 sid_to_fstring(request.data.sid, &s->sid);
 179
 180                 do_async_domain(mem_ctx, root_domain, &request, lookupsid_recv2,
 181                                 (void *)cont, s);
 182
 183                 return;
 184         }
 185
 186         cont(s->caller_private_data, True, response->data.name.dom_name,
 187              response->data.name.name,
 188              (enum lsa_SidType)response->data.name.type);
 189 }
 190
 191 void winbindd_lookupsid_async(TALLOC_CTX *mem_ctx, const DOM_SID *sid,
 192                               void (*cont)(void *private_data, bool success,
 193                                            const char *dom_name,
 194                                            const char *name,
 195                                            enum lsa_SidType type),
 196                               void *private_data)
 197 {
 198         struct winbindd_domain *domain;
 199         struct winbindd_request request;
 200         struct lookupsid_state *s;
 201
 202         domain = find_lookup_domain_from_sid(sid);
 203         if (domain == NULL) {
 204                 DEBUG(5, ("Could not find domain for sid %s\n",
 205                           sid_string_dbg(sid)));
 206                 cont(private_data, False, NULL, NULL, SID_NAME_UNKNOWN);
 207                 return;
 208         }
 209
 210         ZERO_STRUCT(request);
 211         request.cmd = WINBINDD_LOOKUPSID;
 212         sid_to_fstring(request.data.sid, sid);
 213
 214         if ( (s = TALLOC_ZERO_P(mem_ctx, struct lookupsid_state)) == NULL ) {
 215                 DEBUG(0, ("winbindd_lookupsid_async: talloc failed\n"));
 216                 cont(private_data, False, NULL, NULL, SID_NAME_UNKNOWN);
 217                 return;
 218         }
 219
 220         sid_copy( &s->sid, sid );
 221         s->caller_private_data = private_data;
 222
 223         do_async_domain(mem_ctx, domain, &request, lookupsid_recv,
 224                         (void *)cont, s);
 225 }
 226
 227 enum winbindd_result winbindd_dual_lookupsid(struct winbindd_domain *domain,
 228                                              struct winbindd_cli_state *state)
 229 {
 230         enum lsa_SidType type;
 231         DOM_SID sid;
 232         char *name;
 233         char *dom_name;
 234
 235         /* Ensure null termination */
 236         state->request.data.sid[sizeof(state->request.data.sid)-1]='\0';
 237
 238         DEBUG(3, ("[%5lu]: lookupsid %s\n", (unsigned long)state->pid,
 239                   state->request.data.sid));
 240
 241         /* Lookup sid from PDC using lsa_lookup_sids() */
 242
 243         if (!string_to_sid(&sid, state->request.data.sid)) {
 244                 DEBUG(5, ("%s not a SID\n", state->request.data.sid));
 245                 return WINBINDD_ERROR;
 246         }
 247
 248         /* Lookup the sid */
 249
 250         if (!winbindd_lookup_name_by_sid(state->mem_ctx, domain, &sid,
 251                                          &dom_name, &name, &type))
 252         {
 253                 TALLOC_FREE(dom_name);
 254                 TALLOC_FREE(name);
 255                 return WINBINDD_ERROR;
 256         }
 257
 258         fstrcpy(state->response.data.name.dom_name, dom_name);
 259         fstrcpy(state->response.data.name.name, name);
 260         state->response.data.name.type = type;
 261
 262         TALLOC_FREE(dom_name);
 263         TALLOC_FREE(name);
 264         return WINBINDD_OK;
 265 }
 266
 267 /********************************************************************
 268  This is the second callback after contacting the forest root
 269 ********************************************************************/
 270
 271 struct lookupname_state {
 272         char *dom_name;
 273         char *name;
 274         void *caller_private_data;
 275 };
 276
 277
 278 static void lookupname_recv2(TALLOC_CTX *mem_ctx, bool success,
 279                             struct winbindd_response *response,
 280                             void *c, void *private_data)
 281 {
 282         void (*cont)(void *priv, bool succ, const DOM_SID *sid,
 283                      enum lsa_SidType type) =
 284                 (void (*)(void *, bool, const DOM_SID *, enum lsa_SidType))c;
 285         DOM_SID sid;
 286         struct lookupname_state *s = talloc_get_type_abort( private_data,
 287                                                             struct lookupname_state );
 288
 289         if (!success) {
 290                 DEBUG(5, ("Could not trigger lookup_name\n"));
 291                 cont(s->caller_private_data, False, NULL, SID_NAME_UNKNOWN);
 292                 return;
 293         }
 294
 295         if (response->result != WINBINDD_OK) {
 296                 DEBUG(5, ("lookup_name returned an error\n"));
 297                 cont(s->caller_private_data, False, NULL, SID_NAME_UNKNOWN);
 298                 return;
 299         }
 300
 301         if (!string_to_sid(&sid, response->data.sid.sid)) {
 302                 DEBUG(0, ("Could not convert string %s to sid\n",
 303                           response->data.sid.sid));
 304                 cont(s->caller_private_data, False, NULL, SID_NAME_UNKNOWN);
 305                 return;
 306         }
 307
 308         cont(s->caller_private_data, True, &sid,
 309              (enum lsa_SidType)response->data.sid.type);
 310 }
 311
 312 /********************************************************************
 313  This is the first callback after contacting our own domain
 314 ********************************************************************/
 315
 316 static void lookupname_recv(TALLOC_CTX *mem_ctx, bool success,
 317                             struct winbindd_response *response,
 318                             void *c, void *private_data)
 319 {
 320         void (*cont)(void *priv, bool succ, const DOM_SID *sid,
 321                      enum lsa_SidType type) =
 322                 (void (*)(void *, bool, const DOM_SID *, enum lsa_SidType))c;
 323         DOM_SID sid;
 324         struct lookupname_state *s = talloc_get_type_abort( private_data,
 325                                                             struct lookupname_state );
 326
 327         if (!success) {
 328                 DEBUG(5, ("lookupname_recv: lookup_name() failed!\n"));
 329                 cont(s->caller_private_data, False, NULL, SID_NAME_UNKNOWN);
 330                 return;
 331         }
 332
 333         if (response->result != WINBINDD_OK) {
 334                 /* Try again using the forest root */
 335                 struct winbindd_domain *root_domain = find_root_domain();
 336                 struct winbindd_request request;
 337
 338                 if ( !root_domain ) {
 339                         DEBUG(5,("lookupname_recv: unable to determine forest root\n"));
 340                         cont(s->caller_private_data, False, NULL, SID_NAME_UNKNOWN);
 341                         return;
 342                 }
 343
 344                 ZERO_STRUCT(request);
 345                 request.cmd = WINBINDD_LOOKUPNAME;
 346
 347                 fstrcpy( request.data.name.dom_name, s->dom_name );
 348                 fstrcpy( request.data.name.name, s->name );
 349
 350                 do_async_domain(mem_ctx, root_domain, &request, lookupname_recv2,
 351                                 (void *)cont, s);
 352
 353                 return;
 354         }
 355
 356         if (!string_to_sid(&sid, response->data.sid.sid)) {
 357                 DEBUG(0, ("Could not convert string %s to sid\n",
 358                           response->data.sid.sid));
 359                 cont(s->caller_private_data, False, NULL, SID_NAME_UNKNOWN);
 360                 return;
 361         }
 362
 363         cont(s->caller_private_data, True, &sid,
 364              (enum lsa_SidType)response->data.sid.type);
 365 }
 366
 367 /********************************************************************
 368  The lookup name call first contacts a DC in its own domain
 369  and fallbacks to contact a DC in the forest in our domain doesn't
 370  know the name.
 371 ********************************************************************/
 372
 373 void winbindd_lookupname_async(TALLOC_CTX *mem_ctx,
 374                                const char *dom_name, const char *name,
 375                                void (*cont)(void *private_data, bool success,
 376                                             const DOM_SID *sid,
 377                                             enum lsa_SidType type),
 378                                enum winbindd_cmd orig_cmd,
 379                                void *private_data)
 380 {
 381         struct winbindd_request request;
 382         struct winbindd_domain *domain;
 383         struct lookupname_state *s;
 384
 385         if ( (domain = find_lookup_domain_from_name(dom_name)) == NULL ) {
 386                 DEBUG(5, ("Could not find domain for name '%s'\n", dom_name));
 387                 cont(private_data, False, NULL, SID_NAME_UNKNOWN);
 388                 return;
 389         }
 390
 391         ZERO_STRUCT(request);
 392         request.cmd = WINBINDD_LOOKUPNAME;
 393         request.original_cmd = orig_cmd;
 394         fstrcpy(request.data.name.dom_name, dom_name);
 395         fstrcpy(request.data.name.name, name);
 396
 397         if ( (s = TALLOC_ZERO_P(mem_ctx, struct lookupname_state)) == NULL ) {
 398                 DEBUG(0, ("winbindd_lookupname_async: talloc failed\n"));
 399                 cont(private_data, False, NULL, SID_NAME_UNKNOWN);
 400                 return;
 401         }
 402
 403         s->dom_name = talloc_strdup( s, dom_name );
 404         s->name     = talloc_strdup( s, name );
 405         if (!s->dom_name || !s->name) {
 406                 cont(private_data, False, NULL, SID_NAME_UNKNOWN);
 407                 return;
 408         }
 409
 410         s->caller_private_data = private_data;
 411
 412         do_async_domain(mem_ctx, domain, &request, lookupname_recv,
 413                         (void *)cont, s);
 414 }
 415
 416 enum winbindd_result winbindd_dual_lookupname(struct winbindd_domain *domain,
 417                                               struct winbindd_cli_state *state)
 418 {
 419         enum lsa_SidType type;
 420         char *name_domain, *name_user;
 421         DOM_SID sid;
 422         char *p;
 423
 424         /* Ensure null termination */
 425         state->request.data.name.dom_name[sizeof(state->request.data.name.dom_name)-1]='\0';
 426
 427         /* Ensure null termination */
 428         state->request.data.name.name[sizeof(state->request.data.name.name)-1]='\0';
 429
 430         /* cope with the name being a fully qualified name */
 431         p = strstr(state->request.data.name.name, lp_winbind_separator());
 432         if (p) {
 433                 *p = 0;
 434                 name_domain = state->request.data.name.name;
 435                 name_user = p+1;
 436         } else {
 437                 name_domain = state->request.data.name.dom_name;
 438                 name_user = state->request.data.name.name;
 439         }
 440
 441         DEBUG(3, ("[%5lu]: lookupname %s%s%s\n", (unsigned long)state->pid,
 442                   name_domain, lp_winbind_separator(), name_user));
 443
 444         /* Lookup name from DC using lsa_lookup_names() */
 445         if (!winbindd_lookup_sid_by_name(state->mem_ctx, state->request.original_cmd, domain, name_domain,
 446                                          name_user, &sid, &type)) {
 447                 return WINBINDD_ERROR;
 448         }
 449
 450         sid_to_fstring(state->response.data.sid.sid, &sid);
 451         state->response.data.sid.type = type;
 452
 453         return WINBINDD_OK;
 454 }
 455
 456 bool print_sidlist(TALLOC_CTX *mem_ctx, const DOM_SID *sids,
 457                    size_t num_sids, char **result, ssize_t *len)
 458 {
 459         size_t i;
 460         size_t buflen = 0;
 461
 462         *len = 0;
 463         *result = NULL;
 464         for (i=0; i<num_sids; i++) {
 465                 fstring tmp;
 466                 sprintf_append(mem_ctx, result, len, &buflen,
 467                                "%s\n", sid_to_fstring(tmp, &sids[i]));
 468         }
 469
 470         if ((num_sids != 0) && (*result == NULL)) {
 471                 return False;
 472         }
 473
 474         return True;
 475 }
 476
 477 static bool parse_sidlist(TALLOC_CTX *mem_ctx, char *sidstr,
 478                           DOM_SID **sids, size_t *num_sids)
 479 {
 480         char *p, *q;
 481
 482         p = sidstr;
 483         if (p == NULL)
 484                 return False;
 485
 486         while (p[0] != '\0') {
 487                 DOM_SID sid;
 488                 q = strchr(p, '\n');
 489                 if (q == NULL) {
 490                         DEBUG(0, ("Got invalid sidstr: %s\n", p));
 491                         return False;
 492                 }
 493                 *q = '\0';
 494                 q += 1;
 495                 if (!string_to_sid(&sid, p)) {
 496                         DEBUG(0, ("Could not parse sid %s\n", p));
 497                         return False;
 498                 }
 499                 if (!NT_STATUS_IS_OK(add_sid_to_array(mem_ctx, &sid, sids,
 500                                                       num_sids)))
 501                 {
 502                         return False;
 503                 }
 504                 p = q;
 505         }
 506         return True;
 507 }
 508
 509 static bool parse_ridlist(TALLOC_CTX *mem_ctx, char *ridstr,
 510                           uint32 **rids, size_t *num_rids)
 511 {
 512         char *p;
 513
 514         p = ridstr;
 515         if (p == NULL)
 516                 return False;
 517
 518         while (p[0] != '\0') {
 519                 uint32 rid;
 520                 char *q;
 521                 rid = strtoul(p, &q, 10);
 522                 if (*q != '\n') {
 523                         DEBUG(0, ("Got invalid ridstr: %s\n", p));
 524                         return False;
 525                 }
 526                 p = q+1;
 527                 ADD_TO_ARRAY(mem_ctx, uint32, rid, rids, num_rids);
 528         }
 529         return True;
 530 }
 531
 532 enum winbindd_result winbindd_dual_lookuprids(struct winbindd_domain *domain,
 533                                               struct winbindd_cli_state *state)
 534 {
 535         uint32 *rids = NULL;
 536         size_t i, buflen, num_rids = 0;
 537         ssize_t len;
 538         DOM_SID domain_sid;
 539         char *domain_name;
 540         char **names;
 541         enum lsa_SidType *types;
 542         NTSTATUS status;
 543         char *result;
 544
 545         DEBUG(10, ("Looking up RIDs for domain %s (%s)\n",
 546                    state->request.domain_name,
 547                    state->request.data.sid));
 548
 549         if (!parse_ridlist(state->mem_ctx, state->request.extra_data.data,
 550                            &rids, &num_rids)) {
 551                 DEBUG(5, ("Could not parse ridlist\n"));
 552                 return WINBINDD_ERROR;
 553         }
 554
 555         if (!string_to_sid(&domain_sid, state->request.data.sid)) {
 556                 DEBUG(5, ("Could not parse domain sid %s\n",
 557                           state->request.data.sid));
 558                 return WINBINDD_ERROR;
 559         }
 560
 561         status = domain->methods->rids_to_names(domain, state->mem_ctx,
 562                                                 &domain_sid, rids, num_rids,
 563                                                 &domain_name,
 564                                                 &names, &types);
 565
 566         if (!NT_STATUS_IS_OK(status) &&
 567             !NT_STATUS_EQUAL(status, STATUS_SOME_UNMAPPED)) {
 568                 return WINBINDD_ERROR;
 569         }
 570
 571         len = 0;
 572         buflen = 0;
 573         result = NULL;
 574
 575         for (i=0; i<num_rids; i++) {
 576                 sprintf_append(state->mem_ctx, &result, &len, &buflen,
 577                                "%d %s\n", types[i], names[i]);
 578         }
 579
 580         fstrcpy(state->response.data.domain_name, domain_name);
 581
 582         if (result != NULL) {
 583                 state->response.extra_data.data = SMB_STRDUP(result);
 584                 if (!state->response.extra_data.data) {
 585                         return WINBINDD_ERROR;
 586                 }
 587                 state->response.length += len+1;
 588         }
 589
 590         return WINBINDD_OK;
 591 }
 592
 593 static void getsidaliases_recv(TALLOC_CTX *mem_ctx, bool success,
 594                                struct winbindd_response *response,
 595                                void *c, void *private_data)
 596 {
 597         void (*cont)(void *priv, bool succ,
 598                      DOM_SID *aliases, size_t num_aliases) =
 599                 (void (*)(void *, bool, DOM_SID *, size_t))c;
 600         char *aliases_str;
 601         DOM_SID *sids = NULL;
 602         size_t num_sids = 0;
 603
 604         if (!success) {
 605                 DEBUG(5, ("Could not trigger getsidaliases\n"));
 606                 cont(private_data, success, NULL, 0);
 607                 return;
 608         }
 609
 610         if (response->result != WINBINDD_OK) {
 611                 DEBUG(5, ("getsidaliases returned an error\n"));
 612                 cont(private_data, False, NULL, 0);
 613                 return;
 614         }
 615
 616         aliases_str = (char *)response->extra_data.data;
 617
 618         if (aliases_str == NULL) {
 619                 DEBUG(10, ("getsidaliases return 0 SIDs\n"));
 620                 cont(private_data, True, NULL, 0);
 621                 return;
 622         }
 623
 624         if (!parse_sidlist(mem_ctx, aliases_str, &sids, &num_sids)) {
 625                 DEBUG(0, ("Could not parse sids\n"));
 626                 cont(private_data, False, NULL, 0);
 627                 return;
 628         }
 629
 630         SAFE_FREE(response->extra_data.data);
 631
 632         cont(private_data, True, sids, num_sids);
 633 }
 634
 635 void winbindd_getsidaliases_async(struct winbindd_domain *domain,
 636                                   TALLOC_CTX *mem_ctx,
 637                                   const DOM_SID *sids, size_t num_sids,
 638                                   void (*cont)(void *private_data,
 639                                                bool success,
 640                                                const DOM_SID *aliases,
 641                                                size_t num_aliases),
 642                                   void *private_data)
 643 {
 644         struct winbindd_request request;
 645         char *sidstr = NULL;
 646         ssize_t len;
 647
 648         if (num_sids == 0) {
 649                 cont(private_data, True, NULL, 0);
 650                 return;
 651         }
 652
 653         if (!print_sidlist(mem_ctx, sids, num_sids, &sidstr, &len)) {
 654                 cont(private_data, False, NULL, 0);
 655                 return;
 656         }
 657
 658         ZERO_STRUCT(request);
 659         request.cmd = WINBINDD_DUAL_GETSIDALIASES;
 660         request.extra_len = len;
 661         request.extra_data.data = sidstr;
 662
 663         do_async_domain(mem_ctx, domain, &request, getsidaliases_recv,
 664                         (void *)cont, private_data);
 665 }
 666
 667 enum winbindd_result winbindd_dual_getsidaliases(struct winbindd_domain *domain,
 668                                                  struct winbindd_cli_state *state)
 669 {
 670         DOM_SID *sids = NULL;
 671         size_t num_sids = 0;
 672         char *sidstr = NULL;
 673         ssize_t len;
 674         size_t i;
 675         uint32 num_aliases;
 676         uint32 *alias_rids;
 677         NTSTATUS result;
 678
 679         DEBUG(3, ("[%5lu]: getsidaliases\n", (unsigned long)state->pid));
 680
 681         sidstr = state->request.extra_data.data;
 682         if (sidstr == NULL) {
 683                 sidstr = talloc_strdup(state->mem_ctx, "\n"); /* No SID */
 684                 if (!sidstr) {
 685                         DEBUG(0, ("Out of memory\n"));
 686                         return WINBINDD_ERROR;
 687                 }
 688         }
 689
 690         DEBUG(10, ("Sidlist: %s\n", sidstr));
 691
 692         if (!parse_sidlist(state->mem_ctx, sidstr, &sids, &num_sids)) {
 693                 DEBUG(0, ("Could not parse SID list: %s\n", sidstr));
 694                 return WINBINDD_ERROR;
 695         }
 696
 697         num_aliases = 0;
 698         alias_rids = NULL;
 699
 700         result = domain->methods->lookup_useraliases(domain,
 701                                                      state->mem_ctx,
 702                                                      num_sids, sids,
 703                                                      &num_aliases,
 704                                                      &alias_rids);
 705
 706         if (!NT_STATUS_IS_OK(result)) {
 707                 DEBUG(3, ("Could not lookup_useraliases: %s\n",
 708                           nt_errstr(result)));
 709                 return WINBINDD_ERROR;
 710         }
 711
 712         num_sids = 0;
 713         sids = NULL;
 714         sidstr = NULL;
 715
 716         DEBUG(10, ("Got %d aliases\n", num_aliases));
 717
 718         for (i=0; i<num_aliases; i++) {
 719                 DOM_SID sid;
 720                 DEBUGADD(10, (" rid %d\n", alias_rids[i]));
 721                 sid_copy(&sid, &domain->sid);
 722                 sid_append_rid(&sid, alias_rids[i]);
 723                 result = add_sid_to_array(state->mem_ctx, &sid, &sids,
 724                                           &num_sids);
 725                 if (!NT_STATUS_IS_OK(result)) {
 726                         return WINBINDD_ERROR;
 727                 }
 728         }
 729
 730
 731         if (!print_sidlist(state->mem_ctx, sids, num_sids, &sidstr, &len)) {
 732                 DEBUG(0, ("Could not print_sidlist\n"));
 733                 state->response.extra_data.data = NULL;
 734                 return WINBINDD_ERROR;
 735         }
 736
 737         state->response.extra_data.data = NULL;
 738
 739         if (sidstr) {
 740                 state->response.extra_data.data = SMB_STRDUP(sidstr);
 741                 if (!state->response.extra_data.data) {
 742                         DEBUG(0, ("Out of memory\n"));
 743                         return WINBINDD_ERROR;
 744                 }
 745                 DEBUG(10, ("aliases_list: %s\n",
 746                            (char *)state->response.extra_data.data));
 747                 state->response.length += len+1;
 748         }
 749
 750         return WINBINDD_OK;
 751 }
 752
 753 struct gettoken_state {
 754         TALLOC_CTX *mem_ctx;
 755         DOM_SID user_sid;
 756         struct winbindd_domain *alias_domain;
 757         struct winbindd_domain *local_alias_domain;
 758         struct winbindd_domain *builtin_domain;
 759         DOM_SID *sids;
 760         size_t num_sids;
 761         void (*cont)(void *private_data, bool success, DOM_SID *sids, size_t num_sids);
 762         void *private_data;
 763 };
 764
 765 static void gettoken_recvdomgroups(TALLOC_CTX *mem_ctx, bool success,
 766                                    struct winbindd_response *response,
 767                                    void *c, void *private_data);
 768 static void gettoken_recvaliases(void *private_data, bool success,
 769                                  const DOM_SID *aliases,
 770                                  size_t num_aliases);
 771
 772
 773 void winbindd_gettoken_async(TALLOC_CTX *mem_ctx, const DOM_SID *user_sid,
 774                              void (*cont)(void *private_data, bool success,
 775                                           DOM_SID *sids, size_t num_sids),
 776                              void *private_data)
 777 {
 778         struct winbindd_domain *domain;
 779         struct winbindd_request request;
 780         struct gettoken_state *state;
 781
 782         state = TALLOC_ZERO_P(mem_ctx, struct gettoken_state);
 783         if (state == NULL) {
 784                 DEBUG(0, ("talloc failed\n"));
 785                 cont(private_data, False, NULL, 0);
 786                 return;
 787         }
 788
 789         state->mem_ctx = mem_ctx;
 790         sid_copy(&state->user_sid, user_sid);
 791         state->alias_domain = find_our_domain();
 792         state->local_alias_domain = find_domain_from_name( get_global_sam_name() );
 793         state->builtin_domain = find_builtin_domain();
 794         state->cont = cont;
 795         state->private_data = private_data;
 796
 797         domain = find_domain_from_sid_noinit(user_sid);
 798         if (domain == NULL) {
 799                 DEBUG(5, ("Could not find domain from SID %s\n",
 800                           sid_string_dbg(user_sid)));
 801                 cont(private_data, False, NULL, 0);
 802                 return;
 803         }
 804
 805         ZERO_STRUCT(request);
 806         request.cmd = WINBINDD_GETUSERDOMGROUPS;
 807         sid_to_fstring(request.data.sid, user_sid);
 808
 809         do_async_domain(mem_ctx, domain, &request, gettoken_recvdomgroups,
 810                         NULL, state);
 811 }
 812
 813 static void gettoken_recvdomgroups(TALLOC_CTX *mem_ctx, bool success,
 814                                    struct winbindd_response *response,
 815                                    void *c, void *private_data)
 816 {
 817         struct gettoken_state *state =
 818                 talloc_get_type_abort(private_data, struct gettoken_state);
 819         char *sids_str;
 820
 821         if (!success) {
 822                 DEBUG(10, ("Could not get domain groups\n"));
 823                 state->cont(state->private_data, False, NULL, 0);
 824                 return;
 825         }
 826
 827         sids_str = (char *)response->extra_data.data;
 828
 829         if (sids_str == NULL) {
 830                 /* This could be normal if we are dealing with a
 831                    local user and local groups */
 832
 833                 if ( !sid_check_is_in_our_domain( &state->user_sid ) ) {
 834                         DEBUG(10, ("Received no domain groups\n"));
 835                         state->cont(state->private_data, True, NULL, 0);
 836                         return;
 837                 }
 838         }
 839
 840         state->sids = NULL;
 841         state->num_sids = 0;
 842
 843         if (!NT_STATUS_IS_OK(add_sid_to_array(mem_ctx, &state->user_sid,
 844                                               &state->sids, &state->num_sids)))
 845         {
 846                 DEBUG(0, ("Out of memory\n"));
 847                 state->cont(state->private_data, False, NULL, 0);
 848                 return;
 849         }
 850
 851         if (sids_str && !parse_sidlist(mem_ctx, sids_str, &state->sids,
 852                            &state->num_sids)) {
 853                 DEBUG(0, ("Could not parse sids\n"));
 854                 state->cont(state->private_data, False, NULL, 0);
 855                 return;
 856         }
 857
 858         SAFE_FREE(response->extra_data.data);
 859
 860         if (state->alias_domain == NULL) {
 861                 DEBUG(10, ("Don't expand domain local groups\n"));
 862                 state->cont(state->private_data, True, state->sids,
 863                             state->num_sids);
 864                 return;
 865         }
 866
 867         winbindd_getsidaliases_async(state->alias_domain, mem_ctx,
 868                                      state->sids, state->num_sids,
 869                                      gettoken_recvaliases, state);
 870 }
 871
 872 static void gettoken_recvaliases(void *private_data, bool success,
 873                                  const DOM_SID *aliases,
 874                                  size_t num_aliases)
 875 {
 876         struct gettoken_state *state = (struct gettoken_state *)private_data;
 877         size_t i;
 878
 879         if (!success) {
 880                 DEBUG(10, ("Could not receive domain local groups\n"));
 881                 state->cont(state->private_data, False, NULL, 0);
 882                 return;
 883         }
 884
 885         for (i=0; i<num_aliases; i++) {
 886                 if (!NT_STATUS_IS_OK(add_sid_to_array(state->mem_ctx,
 887                                                       &aliases[i],
 888                                                       &state->sids,
 889                                                       &state->num_sids)))
 890                 {
 891                         DEBUG(0, ("Out of memory\n"));
 892                         state->cont(state->private_data, False, NULL, 0);
 893                         return;
 894                 }
 895         }
 896
 897         if (state->local_alias_domain != NULL) {
 898                 struct winbindd_domain *local_domain = state->local_alias_domain;
 899                 DEBUG(10, ("Expanding our own local groups\n"));
 900                 state->local_alias_domain = NULL;
 901                 winbindd_getsidaliases_async(local_domain, state->mem_ctx,
 902                                              state->sids, state->num_sids,
 903                                              gettoken_recvaliases, state);
 904                 return;
 905         }
 906
 907         if (state->builtin_domain != NULL) {
 908                 struct winbindd_domain *builtin_domain = state->builtin_domain;
 909                 DEBUG(10, ("Expanding our own BUILTIN groups\n"));
 910                 state->builtin_domain = NULL;
 911                 winbindd_getsidaliases_async(builtin_domain, state->mem_ctx,
 912                                              state->sids, state->num_sids,
 913                                              gettoken_recvaliases, state);
 914                 return;
 915         }
 916
 917         state->cont(state->private_data, True, state->sids, state->num_sids);
 918 }
 919
 920 static void query_user_recv(TALLOC_CTX *mem_ctx, bool success,
 921                             struct winbindd_response *response,
 922                             void *c, void *private_data)
 923 {
 924         void (*cont)(void *priv, bool succ, const char *acct_name,
 925                      const char *full_name, const char *homedir,
 926                      const char *shell, uint32 gid, uint32 group_rid) =
 927                 (void (*)(void *, bool, const char *, const char *,
 928                           const char *, const char *, uint32, uint32))c;
 929
 930         if (!success) {
 931                 DEBUG(5, ("Could not trigger query_user\n"));
 932                 cont(private_data, False, NULL, NULL, NULL, NULL, -1, -1);
 933                 return;
 934         }
 935
 936         if (response->result != WINBINDD_OK) {
 937                 DEBUG(5, ("query_user returned an error\n"));
 938                 cont(private_data, False, NULL, NULL, NULL, NULL, -1, -1);
 939                 return;
 940         }
 941
 942         cont(private_data, True, response->data.user_info.acct_name,
 943              response->data.user_info.full_name,
 944              response->data.user_info.homedir,
 945              response->data.user_info.shell,
 946              response->data.user_info.primary_gid,
 947              response->data.user_info.group_rid);
 948 }
 949
 950 void query_user_async(TALLOC_CTX *mem_ctx, struct winbindd_domain *domain,
 951                       const DOM_SID *sid,
 952                       void (*cont)(void *private_data, bool success,
 953                                    const char *acct_name,
 954                                    const char *full_name,
 955                                    const char *homedir,
 956                                    const char *shell,
 957                                    gid_t gid,
 958                                    uint32 group_rid),
 959                       void *private_data)
 960 {
 961         struct winbindd_request request;
 962         ZERO_STRUCT(request);
 963         request.cmd = WINBINDD_DUAL_USERINFO;
 964         sid_to_fstring(request.data.sid, sid);
 965         do_async_domain(mem_ctx, domain, &request, query_user_recv,
 966                         (void *)cont, private_data);
 967 }