source/winbindd/winbindd_idmap.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    Copyright (C) Simo Sorce 2007
   9
  10    The helpers always consist of three functions:
  11
  12    * A request setup function that takes the necessary parameters together
  13      with a continuation function that is to be called upon completion
  14
  15    * A private continuation function that is internal only. This is to be
  16      called by the lower-level functions in do_async(). Its only task is to
  17      properly call the continuation function named above.
  18
  19    * A worker function that is called inside the appropriate child process.
  20
  21    This program is free software; you can redistribute it and/or modify
  22    it under the terms of the GNU General Public License as published by
  23    the Free Software Foundation; either version 3 of the License, or
  24    (at your option) any later version.
  25
  26    This program is distributed in the hope that it will be useful,
  27    but WITHOUT ANY WARRANTY; without even the implied warranty of
  28    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  29    GNU General Public License for more details.
  30
  31    You should have received a copy of the GNU General Public License
  32    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  33 */
  34
  35 #include "includes.h"
  36 #include "winbindd.h"
  37
  38 #undef DBGC_CLASS
  39 #define DBGC_CLASS DBGC_WINBIND
  40
  41 static const struct winbindd_child_dispatch_table idmap_dispatch_table[];
  42
  43 static struct winbindd_child static_idmap_child;
  44
  45 void init_idmap_child(void)
  46 {
  47         setup_child(&static_idmap_child,
  48                     idmap_dispatch_table,
  49                     "log.winbindd", "idmap");
  50 }
  51
  52 struct winbindd_child *idmap_child(void)
  53 {
  54         return &static_idmap_child;
  55 }
  56
  57 static void ndr_child_get_idmap_sid2uid(struct winbindd_domain *domain,
  58                                         struct winbindd_cli_state *state,
  59                                         struct winbind_get_idmap *r)
  60 {
  61         uid_t uid;
  62         NTSTATUS result;
  63
  64         DEBUG(3, ("sid to uid '%s'\n", sid_string_tos(r->in.req.sid)));
  65
  66         /* Find uid for this sid and return it, possibly ask the slow remote idmap */
  67
  68         result = idmap_sid_to_uid(r->in.req.sid, &uid);
  69         if (!NT_STATUS_IS_OK(result)) {
  70                 DEBUG(1, ("Can't map '%s' to uid: %s\n",
  71                         sid_string_tos(r->in.req.sid),
  72                         nt_errstr(result)));
  73                 r->out.result = WINBIND_STATUS_FOOBAR;
  74                 return;
  75         }
  76
  77         DEBUG(10, ("sid %s mapped to uid %u\n",
  78                 sid_string_tos(r->in.req.sid), uid));
  79
  80         r->out.rep->uid = uid;
  81         r->out.result = WINBIND_STATUS_OK;
  82 }
  83
  84 static void ndr_child_get_idmap_sid2gid(struct winbindd_domain *domain,
  85                                         struct winbindd_cli_state *state,
  86                                         struct winbind_get_idmap *r)
  87 {
  88         gid_t gid;
  89         NTSTATUS result;
  90
  91         DEBUG(3, ("sid to gid '%s'\n", sid_string_tos(r->in.req.sid)));
  92
  93         /* Find uid for this sid and return it, possibly ask the slow remote idmap */
  94
  95         result = idmap_sid_to_gid(r->in.req.sid, &gid);
  96         if (!NT_STATUS_IS_OK(result)) {
  97                 DEBUG(1, ("Can't map '%s' to gid: %s\n",
  98                         sid_string_tos(r->in.req.sid),
  99                         nt_errstr(result)));
 100                 r->out.result = WINBIND_STATUS_FOOBAR;
 101                 return;
 102         }
 103
 104         DEBUG(10, ("sid %s mapped to gid %u\n",
 105                 sid_string_tos(r->in.req.sid), gid));
 106
 107         r->out.rep->gid = gid;
 108         r->out.result = WINBIND_STATUS_OK;
 109 }
 110
 111 static void ndr_child_get_idmap_uid2sid(struct winbindd_domain *domain,
 112                                         struct winbindd_cli_state *state,
 113                                         struct winbind_get_idmap *r)
 114 {
 115         DOM_SID sid;
 116         uid_t uid;
 117         NTSTATUS result;
 118
 119         DEBUG(3, ("uid to sid '%llu'\n",
 120                 (unsigned long long)r->in.req.uid));
 121
 122         /* the IDMAP subsystem only knows about uint32_t id's yet */
 123         if (r->in.req.uid > UINT32_MAX) {
 124                 DEBUG(1, ("Can't map uid '%llu' to sid\n",
 125                         (unsigned long long)r->in.req.uid));
 126                 r->out.result = WINBIND_STATUS_FOOBAR;
 127                 return;
 128         }
 129
 130         /* Find uid for this sid and return it, possibly ask the slow remote idmap */
 131
 132         uid = r->in.req.uid;
 133
 134         result = idmap_uid_to_sid(&sid, uid);
 135         if (!NT_STATUS_IS_OK(result)) {
 136                 DEBUG(1, ("Can't map uid '%u' to sid: %s\n",
 137                         uid, nt_errstr(result)));
 138                 r->out.result = WINBIND_STATUS_FOOBAR;
 139                 return;
 140         }
 141
 142         DEBUG(10, ("uid %u mapped to sid %s\n",
 143                 uid, sid_string_tos(&sid)));
 144
 145         r->out.rep->sid = sid_dup_talloc(r, &sid);
 146         if (!r->out.rep->sid) {
 147                 r->out.result = WINBIND_STATUS_NO_MEMORY;
 148                 return;
 149         }
 150
 151         r->out.result = WINBIND_STATUS_OK;
 152 }
 153
 154 static void ndr_child_get_idmap_gid2sid(struct winbindd_domain *domain,
 155                                         struct winbindd_cli_state *state,
 156                                         struct winbind_get_idmap *r)
 157 {
 158         DOM_SID sid;
 159         gid_t gid;
 160         NTSTATUS result;
 161
 162         DEBUG(3, ("gid to sid '%llu'\n",
 163                 (unsigned long long)r->in.req.gid));
 164
 165         /* the IDMAP subsystem only knows about uint32_t id's yet */
 166         if (r->in.req.gid > UINT32_MAX) {
 167                 DEBUG(1, ("Can't map gid '%llu' to sid\n",
 168                         (unsigned long long)r->in.req.gid));
 169                 r->out.result = WINBIND_STATUS_FOOBAR;
 170                 return;
 171         }
 172
 173         /* Find uid for this sid and return it, possibly ask the slow remote idmap */
 174         gid = r->in.req.gid;
 175
 176         result = idmap_gid_to_sid(&sid, gid);
 177         if (!NT_STATUS_IS_OK(result)) {
 178                 DEBUG(1, ("Can't map gid '%u' to sid: %s\n",
 179                         gid, nt_errstr(result)));
 180                 r->out.result = WINBIND_STATUS_FOOBAR;
 181                 return;
 182         }
 183
 184         DEBUG(10, ("gid %u mapped to sid %s\n",
 185                 gid, sid_string_tos(&sid)));
 186
 187         r->out.rep->sid = sid_dup_talloc(r, &sid);
 188         if (!r->out.rep->sid) {
 189                 r->out.result = WINBIND_STATUS_NO_MEMORY;
 190                 return;
 191         }
 192
 193         r->out.result = WINBIND_STATUS_OK;
 194 }
 195
 196 void winbindd_ndr_child_get_idmap(struct winbindd_domain *domain,
 197                                   struct winbindd_cli_state *state)
 198 {
 199         struct winbind_get_idmap *r;
 200
 201         r = talloc_get_type_abort(state->c.ndr.r,
 202                                   struct winbind_get_idmap);
 203
 204         switch (*r->in.level) {
 205         case WINBIND_IDMAP_LEVEL_SID_TO_UID:
 206                 ndr_child_get_idmap_sid2uid(domain, state, r);
 207                 return;
 208
 209         case WINBIND_IDMAP_LEVEL_SID_TO_GID:
 210                 ndr_child_get_idmap_sid2gid(domain, state, r);
 211                 return;
 212
 213         case WINBIND_IDMAP_LEVEL_UID_TO_SID:
 214                 ndr_child_get_idmap_uid2sid(domain, state, r);
 215                 return;
 216
 217         case WINBIND_IDMAP_LEVEL_GID_TO_SID:
 218                 ndr_child_get_idmap_gid2sid(domain, state, r);
 219                 return;
 220         }
 221
 222         r->out.result = WINBIND_STATUS_UNKNOWN_LEVEL;
 223         return;
 224 }
 225
 226 static void ndr_child_set_idmap_allocate_uid(struct winbindd_domain *domain,
 227                                              struct winbindd_cli_state *state,
 228                                              struct winbind_set_idmap *r)
 229 {
 230         NTSTATUS result;
 231         struct unixid xid;
 232
 233         DEBUG(3, ("allocate_uid\n"));
 234
 235         result = idmap_allocate_uid(&xid);
 236         if (!NT_STATUS_IS_OK(result)) {
 237                 DEBUG(1,("Can't allocate uid: %s\n",
 238                          nt_errstr(result)));
 239                 r->out.result = WINBIND_STATUS_FOOBAR;
 240                 return;
 241         }
 242
 243         DEBUG(10, ("allocte_uid: %u\n",
 244                    xid.id));
 245
 246         r->out.rep->uid = xid.id;
 247
 248         r->out.result = WINBIND_STATUS_OK;
 249 }
 250
 251 static void ndr_child_set_idmap_allocate_gid(struct winbindd_domain *domain,
 252                                              struct winbindd_cli_state *state,
 253                                              struct winbind_set_idmap *r)
 254 {
 255         NTSTATUS result;
 256         struct unixid xid;
 257
 258         DEBUG(3, ("allocate_gid\n"));
 259
 260         result = idmap_allocate_gid(&xid);
 261         if (!NT_STATUS_IS_OK(result)) {
 262                 DEBUG(1,("Can't allocate gid: %s\n",
 263                          nt_errstr(result)));
 264                 r->out.result = WINBIND_STATUS_FOOBAR;
 265                 return;
 266         }
 267
 268         DEBUG(10, ("allocte_gid: %u\n",
 269                    xid.id));
 270
 271         r->out.rep->gid = xid.id;
 272
 273         r->out.result = WINBIND_STATUS_OK;
 274 }
 275
 276 static void ndr_child_set_idmap_set_mapping(struct winbindd_domain *domain,
 277                                             struct winbindd_cli_state *state,
 278                                             struct winbind_set_idmap *r)
 279 {
 280         NTSTATUS result;
 281
 282         DEBUG(3,("set_mapping: sid %s -> %u type:%u\n",
 283                  sid_string_tos(r->in.req.mapping.sid),
 284                  r->in.req.mapping.xid.id,
 285                  r->in.req.mapping.xid.type));
 286
 287         result = idmap_set_mapping(&r->in.req.mapping);
 288         if (!NT_STATUS_IS_OK(result)) {
 289                 DEBUG(1,("Can't set mapping: %s\n",
 290                          nt_errstr(result)));
 291                 r->out.result = WINBIND_STATUS_FOOBAR;
 292                 return;
 293         }
 294
 295         r->out.result = WINBIND_STATUS_OK;
 296 }
 297
 298 static void ndr_child_set_idmap_set_hwm(struct winbindd_domain *domain,
 299                                         struct winbindd_cli_state *state,
 300                                         struct winbind_set_idmap *r)
 301 {
 302         NTSTATUS result;
 303
 304         DEBUG(3,("set_hwm: %u type:%u\n",
 305                  r->in.req.hwm.id,
 306                  r->in.req.hwm.type));
 307
 308         switch (r->in.req.hwm.type) {
 309         case ID_TYPE_UID:
 310                 result = idmap_set_uid_hwm(&r->in.req.hwm);
 311                 break;
 312         case ID_TYPE_GID:
 313                 result = idmap_set_gid_hwm(&r->in.req.hwm);
 314                 break;
 315         default:
 316                 result = NT_STATUS_INVALID_PARAMETER;
 317                 break;
 318         }
 319
 320         if (!NT_STATUS_IS_OK(result)) {
 321                 DEBUG(1,("Can't set hwm: %s\n",
 322                          nt_errstr(result)));
 323                 r->out.result = WINBIND_STATUS_FOOBAR;
 324                 return;
 325         }
 326
 327         r->out.result = WINBIND_STATUS_OK;
 328 }
 329
 330 void winbindd_ndr_child_set_idmap(struct winbindd_domain *domain,
 331                                   struct winbindd_cli_state *state)
 332 {
 333         struct winbind_set_idmap *r;
 334
 335         r = talloc_get_type_abort(state->c.ndr.r,
 336                                   struct winbind_set_idmap);
 337
 338         switch (*r->in.level) {
 339         case WINBIND_SET_IDMAP_LEVEL_ALLOCATE_UID:
 340                 ndr_child_set_idmap_allocate_uid(domain, state, r);
 341                 return;
 342
 343         case WINBIND_SET_IDMAP_LEVEL_ALLOCATE_GID:
 344                 ndr_child_set_idmap_allocate_gid(domain, state, r);
 345                 return;
 346
 347         case WINBIND_SET_IDMAP_LEVEL_SET_MAPPING:
 348                 ndr_child_set_idmap_set_mapping(domain, state, r);
 349                 return;
 350
 351         case WINBIND_SET_IDMAP_LEVEL_SET_HWM:
 352                 ndr_child_set_idmap_set_hwm(domain, state, r);
 353                 return;
 354         }
 355
 356         r->out.result = WINBIND_STATUS_UNKNOWN_LEVEL;
 357         return;
 358 }
 359
 360 static void winbindd_set_hwm_recv(TALLOC_CTX *mem_ctx, bool success,
 361                                    struct winbindd_response *response,
 362                                    void *c, void *private_data)
 363 {
 364         void (*cont)(void *priv, bool succ) = (void (*)(void *, bool))c;
 365
 366         if (!success) {
 367                 DEBUG(5, ("Could not trigger idmap_set_hwm\n"));
 368                 cont(private_data, False);
 369                 return;
 370         }
 371
 372         if (response->result != WINBINDD_OK) {
 373                 DEBUG(5, ("idmap_set_hwm returned an error\n"));
 374                 cont(private_data, False);
 375                 return;
 376         }
 377
 378         cont(private_data, True);
 379 }
 380
 381 void winbindd_set_hwm_async(TALLOC_CTX *mem_ctx, const struct unixid *xid,
 382                              void (*cont)(void *private_data, bool success),
 383                              void *private_data)
 384 {
 385         struct winbindd_request request;
 386         ZERO_STRUCT(request);
 387         request.cmd = WINBINDD_DUAL_SET_HWM;
 388         request.data.dual_idmapset.id = xid->id;
 389         request.data.dual_idmapset.type = xid->type;
 390
 391         do_async(mem_ctx, idmap_child(), &request, winbindd_set_hwm_recv,
 392                  (void *)cont, private_data);
 393 }
 394
 395 enum winbindd_result winbindd_dual_set_hwm(struct winbindd_domain *domain,
 396                                             struct winbindd_cli_state *state)
 397 {
 398         struct unixid xid;
 399         NTSTATUS result;
 400
 401         DEBUG(3, ("[%5lu]: dual_set_hwm\n", (unsigned long)state->pid));
 402
 403         xid.id = state->request.data.dual_idmapset.id;
 404         xid.type = state->request.data.dual_idmapset.type;
 405
 406         switch (xid.type) {
 407         case ID_TYPE_UID:
 408                 result = idmap_set_uid_hwm(&xid);
 409                 break;
 410         case ID_TYPE_GID:
 411                 result = idmap_set_gid_hwm(&xid);
 412                 break;
 413         default:
 414                 return WINBINDD_ERROR;
 415         }
 416         return NT_STATUS_IS_OK(result) ? WINBINDD_OK : WINBINDD_ERROR;
 417 }
 418
 419 static void winbindd_sid2uid_recv(TALLOC_CTX *mem_ctx, bool success,
 420                                     struct winbindd_ndr_call *c,
 421                                     void *_r,
 422                                     void *_cont,
 423                                     void *private_data)
 424 {
 425         void (*cont)(void *priv, bool succ, uid_t) =
 426                 (void (*)(void *, bool, uid_t))_cont;
 427         struct winbind_get_idmap *r =
 428                 talloc_get_type_abort(_r, struct winbind_get_idmap);
 429         uid_t uid;
 430
 431         if (!success) {
 432                 DEBUG(5, ("Could not get_idmap(sid2uid)\n"));
 433                 TALLOC_FREE(r);
 434                 cont(private_data, false, (uid_t)-1);
 435                 return;
 436         }
 437
 438         if (r->out.result != WINBIND_STATUS_OK) {
 439                 DEBUG(5, ("get_idmap(sid2uid) returned an error:0x%08X\n",
 440                         r->out.result));
 441                 TALLOC_FREE(r);
 442                 cont(private_data, false, (uid_t)-1);
 443                 return;
 444         }
 445
 446         if (r->out.rep->uid > UINT32_MAX) {
 447                 DEBUG(1, ("get_idmap(sid2uid) returned a 64bit uid %llu\n",
 448                         (unsigned long long)r->out.rep->uid));
 449                 TALLOC_FREE(r);
 450                 cont(private_data, false, (uid_t)-1);
 451                 return;
 452         }
 453
 454         uid = r->out.rep->uid;
 455         TALLOC_FREE(r);
 456         cont(private_data, true, uid);
 457 }
 458
 459 void winbindd_sid2uid_async(TALLOC_CTX *mem_ctx, const DOM_SID *sid,
 460                          void (*cont)(void *private_data, bool success, uid_t uid),
 461                          void *private_data)
 462 {
 463         struct winbind_get_idmap *r = NULL;
 464
 465         DEBUG(7,("winbindd_sid2uid_async: Resolving %s to a uid\n",
 466                 sid_string_tos(sid)));
 467
 468         r = TALLOC_P(mem_ctx, struct winbind_get_idmap);
 469         if (!r) goto nomem;
 470         r->in.level = TALLOC_P(r, enum winbind_get_idmap_level);
 471         if (!r->in.level) goto nomem;
 472
 473         *r->in.level    = WINBIND_IDMAP_LEVEL_SID_TO_UID;
 474         r->in.req.sid   = discard_const(sid);
 475
 476         do_async_ndr(mem_ctx, idmap_child(),
 477                      NDR_WINBIND_GET_IDMAP, r,
 478                      winbindd_sid2uid_recv, r,
 479                      (void *)cont, private_data);
 480         return;
 481 nomem:
 482         TALLOC_FREE(r);
 483         cont(private_data, false, (uid_t)-1);
 484         return;
 485 }
 486
 487 static void winbindd_sid2gid_recv(TALLOC_CTX *mem_ctx, bool success,
 488                                     struct winbindd_ndr_call *c,
 489                                     void *_r,
 490                                     void *_cont,
 491                                     void *private_data)
 492 {
 493         void (*cont)(void *priv, bool succ, gid_t) =
 494                 (void (*)(void *, bool, gid_t))_cont;
 495         struct winbind_get_idmap *r =
 496                 talloc_get_type_abort(_r, struct winbind_get_idmap);
 497         gid_t gid;
 498
 499         if (!success) {
 500                 DEBUG(5, ("Could not get_idmap(sid2gid)\n"));
 501                 TALLOC_FREE(r);
 502                 cont(private_data, false, (gid_t)-1);
 503                 return;
 504         }
 505
 506         if (r->out.result != WINBIND_STATUS_OK) {
 507                 DEBUG(5, ("get_idmap(sid2gid) returned an error:0x%08X\n",
 508                         r->out.result));
 509                 TALLOC_FREE(r);
 510                 cont(private_data, false, (gid_t)-1);
 511                 return;
 512         }
 513
 514         if (r->out.rep->gid > UINT32_MAX) {
 515                 DEBUG(1, ("get_idmap(sid2gid) returned a 64bit gid %llu\n",
 516                         (unsigned long long)r->out.rep->gid));
 517                 TALLOC_FREE(r);
 518                 cont(private_data, false, (gid_t)-1);
 519                 return;
 520         }
 521
 522         gid = r->out.rep->gid;
 523         TALLOC_FREE(r);
 524         cont(private_data, true, gid);
 525 }
 526
 527 void winbindd_sid2gid_async(TALLOC_CTX *mem_ctx, const DOM_SID *sid,
 528                          void (*cont)(void *private_data, bool success, gid_t gid),
 529                          void *private_data)
 530 {
 531         struct winbind_get_idmap *r = NULL;
 532
 533         DEBUG(7,("winbindd_sid2gid_async: Resolving %s to a gid\n",
 534                 sid_string_tos(sid)));
 535
 536         r = TALLOC_P(mem_ctx, struct winbind_get_idmap);
 537         if (!r) goto nomem;
 538         r->in.level = TALLOC_P(r, enum winbind_get_idmap_level);
 539         if (!r->in.level) goto nomem;
 540
 541         *r->in.level    = WINBIND_IDMAP_LEVEL_SID_TO_GID;
 542         r->in.req.sid   = discard_const(sid);
 543
 544         do_async_ndr(mem_ctx, idmap_child(),
 545                      NDR_WINBIND_GET_IDMAP, r,
 546                      winbindd_sid2gid_recv, r,
 547                      (void *)cont, private_data);
 548         return;
 549 nomem:
 550         TALLOC_FREE(r);
 551         cont(private_data, false, (gid_t)-1);
 552         return;
 553 }
 554
 555 static void winbindd_uid2sid_recv(TALLOC_CTX *mem_ctx, bool success,
 556                                     struct winbindd_ndr_call *c,
 557                                     void *_r,
 558                                     void *_cont,
 559                                     void *private_data)
 560 {
 561         void (*cont)(void *priv, bool succ, const char *sid) =
 562                 (void (*)(void *, bool, const char *))_cont;
 563         struct winbind_get_idmap *r =
 564                 talloc_get_type_abort(_r, struct winbind_get_idmap);
 565         const char *sid;
 566
 567         if (!success) {
 568                 DEBUG(5, ("Could not get_idmap(uid2sid)\n"));
 569                 TALLOC_FREE(r);
 570                 cont(private_data, false, NULL);
 571                 return;
 572         }
 573
 574         if (r->out.result != WINBIND_STATUS_OK) {
 575                 DEBUG(5, ("get_idmap(uid2sid) returned an error:0x%08X\n",
 576                         r->out.result));
 577                 TALLOC_FREE(r);
 578                 cont(private_data, false, NULL);
 579                 return;
 580         }
 581
 582         sid = dom_sid_string(mem_ctx, r->out.rep->sid);
 583         if (!sid) {
 584                 TALLOC_FREE(r);
 585                 cont(private_data, false, NULL);
 586                 return;
 587         }
 588
 589         TALLOC_FREE(r);
 590         cont(private_data, true, sid);
 591 }
 592
 593 void winbindd_uid2sid_async(TALLOC_CTX *mem_ctx, uid_t uid,
 594                             void (*cont)(void *private_data, bool success, const char *sid),
 595                             void *private_data)
 596 {
 597         struct winbind_get_idmap *r = NULL;
 598
 599         DEBUG(7,("winbindd_uid2sid_async: Resolving %u to a sid\n",
 600                 uid));
 601
 602         r = TALLOC_P(mem_ctx, struct winbind_get_idmap);
 603         if (!r) goto nomem;
 604         r->in.level = TALLOC_P(r, enum winbind_get_idmap_level);
 605         if (!r->in.level) goto nomem;
 606
 607         *r->in.level    = WINBIND_IDMAP_LEVEL_UID_TO_SID;
 608         r->in.req.uid   = uid;
 609
 610         do_async_ndr(mem_ctx, idmap_child(),
 611                      NDR_WINBIND_GET_IDMAP, r,
 612                      winbindd_uid2sid_recv, r,
 613                      (void *)cont, private_data);
 614         return;
 615 nomem:
 616         TALLOC_FREE(r);
 617         cont(private_data, false, NULL);
 618         return;
 619 }
 620
 621 static void winbindd_gid2sid_recv(TALLOC_CTX *mem_ctx, bool success,
 622                                   struct winbindd_ndr_call *c,
 623                                   void *_r,
 624                                   void *_cont,
 625                                   void *private_data)
 626 {
 627         void (*cont)(void *priv, bool succ, const char *sid) =
 628                 (void (*)(void *, bool, const char *))_cont;
 629         struct winbind_get_idmap *r =
 630                 talloc_get_type_abort(_r, struct winbind_get_idmap);
 631         const char *sid;
 632
 633         if (!success) {
 634                 DEBUG(5, ("Could not get_idmap(gid2sid)\n"));
 635                 TALLOC_FREE(r);
 636                 cont(private_data, false, NULL);
 637                 return;
 638         }
 639
 640         if (r->out.result != WINBIND_STATUS_OK) {
 641                 DEBUG(5, ("get_idmap(gid2sid) returned an error:0x%08X\n",
 642                         r->out.result));
 643                 TALLOC_FREE(r);
 644                 cont(private_data, false, NULL);
 645                 return;
 646         }
 647
 648         sid = dom_sid_string(mem_ctx, r->out.rep->sid);
 649         if (!sid) {
 650                 TALLOC_FREE(r);
 651                 cont(private_data, false, NULL);
 652                 return;
 653         }
 654
 655         TALLOC_FREE(r);
 656         cont(private_data, true, sid);
 657 }
 658
 659 void winbindd_gid2sid_async(TALLOC_CTX *mem_ctx, gid_t gid,
 660                             void (*cont)(void *private_data, bool success, const char *sid),
 661                             void *private_data)
 662 {
 663         struct winbind_get_idmap *r = NULL;
 664
 665         DEBUG(7,("winbindd_gid2sid_async: Resolving %u to a sid\n",
 666                 gid));
 667
 668         r = TALLOC_P(mem_ctx, struct winbind_get_idmap);
 669         if (!r) goto nomem;
 670         r->in.level = TALLOC_P(r, enum winbind_get_idmap_level);
 671         if (!r->in.level) goto nomem;
 672
 673         *r->in.level    = WINBIND_IDMAP_LEVEL_GID_TO_SID;
 674         r->in.req.gid   = gid;
 675
 676         do_async_ndr(mem_ctx, idmap_child(),
 677                      NDR_WINBIND_GET_IDMAP, r,
 678                      winbindd_gid2sid_recv, r,
 679                      (void *)cont, private_data);
 680         return;
 681 nomem:
 682         TALLOC_FREE(r);
 683         cont(private_data, false, NULL);
 684         return;
 685 }
 686
 687 static const struct winbindd_child_dispatch_table idmap_dispatch_table[] = {
 688         {
 689                 .name           = "DUAL_SET_HWMS",
 690                 .struct_cmd     = WINBINDD_DUAL_SET_HWM,
 691                 .struct_fn      = winbindd_dual_set_hwm,
 692         },{
 693                 .name           = "NDR_WINBIND_GET_IDMAP",
 694                 .ndr_opnum      = NDR_WINBIND_GET_IDMAP,
 695                 .ndr_fn         = winbindd_ndr_child_get_idmap,
 696         },{
 697                 .name           = "NDR_WINBIND_SET_IDMAP",
 698                 .ndr_opnum      = NDR_WINBIND_SET_IDMAP,
 699                 .ndr_fn         = winbindd_ndr_child_set_idmap,
 700         },{
 701                 .name           = NULL,
 702         }
 703 };