source3/nsswitch/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) Volker Lendecke 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 2 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, write to the Free Software
  32    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  33 */
  34
  35 #include "includes.h"
  36 #include "winbindd.h"
  37
  38 #undef DBGC_CLASS
  39 #define DBGC_CLASS DBGC_WINBIND
  40
  41 struct do_async_state {
  42         TALLOC_CTX *mem_ctx;
  43         struct winbindd_request request;
  44         struct winbindd_response response;
  45         void (*cont)(TALLOC_CTX *mem_ctx,
  46                      BOOL success,
  47                      struct winbindd_response *response,
  48                      void *c, void *private_data);
  49         void *c, *private_data;
  50 };
  51
  52 static void do_async_recv(void *private_data, BOOL success)
  53 {
  54         struct do_async_state *state =
  55                 talloc_get_type_abort(private_data, struct do_async_state);
  56
  57         state->cont(state->mem_ctx, success, &state->response,
  58                     state->c, state->private_data);
  59 }
  60
  61 static void do_async(TALLOC_CTX *mem_ctx, struct winbindd_child *child,
  62                      const struct winbindd_request *request,
  63                      void (*cont)(TALLOC_CTX *mem_ctx, BOOL success,
  64                                   struct winbindd_response *response,
  65                                   void *c, void *private_data),
  66                      void *c, void *private_data)
  67 {
  68         struct do_async_state *state;
  69
  70         state = TALLOC_P(mem_ctx, struct do_async_state);
  71         if (state == NULL) {
  72                 DEBUG(0, ("talloc failed\n"));
  73                 cont(mem_ctx, False, NULL, c, private_data);
  74                 return;
  75         }
  76
  77         state->mem_ctx = mem_ctx;
  78         state->request = *request;
  79         state->request.length = sizeof(state->request);
  80         state->cont = cont;
  81         state->c = c;
  82         state->private_data = private_data;
  83
  84         async_request(mem_ctx, child, &state->request,
  85                       &state->response, do_async_recv, state);
  86 }
  87
  88 void do_async_domain(TALLOC_CTX *mem_ctx, struct winbindd_domain *domain,
  89                      const struct winbindd_request *request,
  90                      void (*cont)(TALLOC_CTX *mem_ctx, BOOL success,
  91                                   struct winbindd_response *response,
  92                                   void *c, void *private_data),
  93                      void *c, void *private_data)
  94 {
  95         struct do_async_state *state;
  96
  97         state = TALLOC_P(mem_ctx, struct do_async_state);
  98         if (state == NULL) {
  99                 DEBUG(0, ("talloc failed\n"));
 100                 cont(mem_ctx, False, NULL, c, private_data);
 101                 return;
 102         }
 103
 104         state->mem_ctx = mem_ctx;
 105         state->request = *request;
 106         state->request.length = sizeof(state->request);
 107         state->cont = cont;
 108         state->c = c;
 109         state->private_data = private_data;
 110
 111         async_domain_request(mem_ctx, domain, &state->request,
 112                              &state->response, do_async_recv, state);
 113 }
 114
 115 static void idmap_set_mapping_recv(TALLOC_CTX *mem_ctx, BOOL success,
 116                                    struct winbindd_response *response,
 117                                    void *c, void *private_data)
 118 {
 119         void (*cont)(void *priv, BOOL succ) = (void (*)(void *, BOOL))c;
 120
 121         if (!success) {
 122                 DEBUG(5, ("Could not trigger idmap_set_mapping\n"));
 123                 cont(private_data, False);
 124                 return;
 125         }
 126
 127         if (response->result != WINBINDD_OK) {
 128                 DEBUG(5, ("idmap_set_mapping returned an error\n"));
 129                 cont(private_data, False);
 130                 return;
 131         }
 132
 133         cont(private_data, True);
 134 }
 135
 136 void idmap_set_mapping_async(TALLOC_CTX *mem_ctx, const DOM_SID *sid,
 137                              unid_t id, int id_type,
 138                              void (*cont)(void *private_data, BOOL success),
 139                              void *private_data)
 140 {
 141         struct winbindd_request request;
 142         ZERO_STRUCT(request);
 143         request.cmd = WINBINDD_DUAL_IDMAPSET;
 144         if (id_type == ID_USERID)
 145                 request.data.dual_idmapset.uid = id.uid;
 146         else
 147                 request.data.dual_idmapset.gid = id.gid;
 148         request.data.dual_idmapset.type = id_type;
 149         sid_to_string(request.data.dual_idmapset.sid, sid);
 150
 151         do_async(mem_ctx, idmap_child(), &request, idmap_set_mapping_recv,
 152                  (void *)cont, private_data);
 153 }
 154
 155 enum winbindd_result winbindd_dual_idmapset(struct winbindd_domain *domain,
 156                                             struct winbindd_cli_state *state)
 157 {
 158         DOM_SID sid;
 159         unid_t id;
 160         NTSTATUS result;
 161
 162         DEBUG(3, ("[%5lu]: dual_idmapset\n", (unsigned long)state->pid));
 163
 164         if (!string_to_sid(&sid, state->request.data.dual_idmapset.sid))
 165                 return WINBINDD_ERROR;
 166
 167         if (state->request.data.dual_idmapset.type == ID_USERID)
 168                 id.uid = state->request.data.dual_idmapset.uid;
 169         else
 170                 id.gid = state->request.data.dual_idmapset.gid;
 171
 172         result = idmap_set_mapping(&sid, id,
 173                                    state->request.data.dual_idmapset.type);
 174         return NT_STATUS_IS_OK(result) ? WINBINDD_OK : WINBINDD_ERROR;
 175 }
 176
 177 static void idmap_sid2uid_recv(TALLOC_CTX *mem_ctx, BOOL success,
 178                                struct winbindd_response *response,
 179                                void *c, void *private_data);
 180
 181 void idmap_sid2uid_async(TALLOC_CTX *mem_ctx, const DOM_SID *sid, BOOL alloc,
 182                          void (*cont)(void *private_data, BOOL success, uid_t uid),
 183                          void *private_data)
 184 {
 185         struct winbindd_request request;
 186         ZERO_STRUCT(request);
 187         request.cmd = WINBINDD_DUAL_SID2UID;
 188         sid_to_string(request.data.dual_sid2id.sid, sid);
 189         request.data.dual_sid2id.alloc = alloc;
 190         do_async(mem_ctx, idmap_child(), &request, idmap_sid2uid_recv,
 191                  (void *)cont, private_data);
 192 }
 193
 194 enum winbindd_result winbindd_dual_sid2uid(struct winbindd_domain *domain,
 195                                            struct winbindd_cli_state *state)
 196 {
 197         DOM_SID sid;
 198         NTSTATUS result;
 199
 200         DEBUG(3, ("[%5lu]: sid to uid %s\n", (unsigned long)state->pid,
 201                   state->request.data.dual_sid2id.sid));
 202
 203         if (!string_to_sid(&sid, state->request.data.dual_sid2id.sid)) {
 204                 DEBUG(1, ("Could not get convert sid %s from string\n",
 205                           state->request.data.dual_sid2id.sid));
 206                 return WINBINDD_ERROR;
 207         }
 208
 209         /* Find uid for this sid and return it, possibly ask the slow remote
 210          * idmap */
 211
 212         result = idmap_sid_to_uid(&sid, &(state->response.data.uid),
 213                                   state->request.data.dual_sid2id.alloc ?
 214                                   0 : IDMAP_FLAG_QUERY_ONLY);
 215
 216         return NT_STATUS_IS_OK(result) ? WINBINDD_OK : WINBINDD_ERROR;
 217 }
 218
 219 static void idmap_sid2uid_recv(TALLOC_CTX *mem_ctx, BOOL success,
 220                                struct winbindd_response *response,
 221                                void *c, void *private_data)
 222 {
 223         void (*cont)(void *priv, BOOL succ, uid_t uid) =
 224                 (void (*)(void *, BOOL, uid_t))c;
 225
 226         if (!success) {
 227                 DEBUG(5, ("Could not trigger sid2uid\n"));
 228                 cont(private_data, False, 0);
 229                 return;
 230         }
 231
 232         if (response->result != WINBINDD_OK) {
 233                 DEBUG(5, ("sid2uid returned an error\n"));
 234                 cont(private_data, False, 0);
 235                 return;
 236         }
 237
 238         cont(private_data, True, response->data.uid);
 239 }
 240
 241 static void uid2name_recv(TALLOC_CTX *mem_ctx, BOOL success,
 242                           struct winbindd_response *response,
 243                           void *c, void *private_data);
 244
 245 void winbindd_uid2name_async(TALLOC_CTX *mem_ctx, uid_t uid,
 246                              void (*cont)(void *private_data, BOOL success,
 247                                           const char *name),
 248                              void *private_data)
 249 {
 250         struct winbindd_request request;
 251         ZERO_STRUCT(request);
 252         request.cmd = WINBINDD_DUAL_UID2NAME;
 253         request.data.uid = uid;
 254         do_async(mem_ctx, idmap_child(), &request, uid2name_recv,
 255                  (void *)cont, private_data);
 256 }
 257
 258 enum winbindd_result winbindd_dual_uid2name(struct winbindd_domain *domain,
 259                                             struct winbindd_cli_state *state)
 260 {
 261         struct passwd *pw;
 262
 263         DEBUG(3, ("[%5lu]: uid2name %lu\n", (unsigned long)state->pid,
 264                   (unsigned long)state->request.data.uid));
 265
 266         pw = getpwuid(state->request.data.uid);
 267         if (pw == NULL) {
 268                 DEBUG(5, ("User %lu not found\n",
 269                           (unsigned long)state->request.data.uid));
 270                 return WINBINDD_ERROR;
 271         }
 272
 273         fstrcpy(state->response.data.name.name, pw->pw_name);
 274         return WINBINDD_OK;
 275 }
 276
 277 static void uid2name_recv(TALLOC_CTX *mem_ctx, BOOL success,
 278                           struct winbindd_response *response,
 279                           void *c, void *private_data)
 280 {
 281         void (*cont)(void *priv, BOOL succ, const char *name) =
 282                 (void (*)(void *, BOOL, const char *))c;
 283
 284         if (!success) {
 285                 DEBUG(5, ("Could not trigger uid2name\n"));
 286                 cont(private_data, False, NULL);
 287                 return;
 288         }
 289
 290         if (response->result != WINBINDD_OK) {
 291                 DEBUG(5, ("uid2name returned an error\n"));
 292                 cont(private_data, False, NULL);
 293                 return;
 294         }
 295
 296         cont(private_data, True, response->data.name.name);
 297 }
 298
 299 static void name2uid_recv(TALLOC_CTX *mem_ctx, BOOL success,
 300                           struct winbindd_response *response,
 301                           void *c, void *private_data);
 302
 303 static void winbindd_name2uid_async(TALLOC_CTX *mem_ctx, const char *name,
 304                                     void (*cont)(void *private_data, BOOL success,
 305                                                  uid_t uid),
 306                                     void *private_data)
 307 {
 308         struct winbindd_request request;
 309         ZERO_STRUCT(request);
 310         request.cmd = WINBINDD_DUAL_NAME2UID;
 311         fstrcpy(request.data.username, name);
 312         do_async(mem_ctx, idmap_child(), &request, name2uid_recv,
 313                  (void *)cont, private_data);
 314 }
 315
 316 enum winbindd_result winbindd_dual_name2uid(struct winbindd_domain *domain,
 317                                             struct winbindd_cli_state *state)
 318 {
 319         struct passwd *pw;
 320
 321         /* Ensure null termination */
 322         state->request.data.username
 323                 [sizeof(state->request.data.username)-1] = '\0';
 324
 325         DEBUG(3, ("[%5lu]: name2uid %s\n", (unsigned long)state->pid,
 326                   state->request.data.username));
 327
 328         pw = getpwnam(state->request.data.username);
 329         if (pw == NULL) {
 330                 return WINBINDD_ERROR;
 331         }
 332
 333         state->response.data.uid = pw->pw_uid;
 334         return WINBINDD_OK;
 335 }
 336
 337 static void name2uid_recv(TALLOC_CTX *mem_ctx, BOOL success,
 338                           struct winbindd_response *response,
 339                           void *c, void *private_data)
 340 {
 341         void (*cont)(void *priv, BOOL succ, uid_t uid) =
 342                 (void (*)(void *, BOOL, uid_t))c;
 343
 344         if (!success) {
 345                 DEBUG(5, ("Could not trigger name2uid\n"));
 346                 cont(private_data, False, 0);
 347                 return;
 348         }
 349
 350         if (response->result != WINBINDD_OK) {
 351                 DEBUG(5, ("name2uid returned an error\n"));
 352                 cont(private_data, False, 0);
 353                 return;
 354         }
 355
 356         cont(private_data, True, response->data.uid);
 357 }
 358
 359 static void idmap_sid2gid_recv(TALLOC_CTX *mem_ctx, BOOL success,
 360                                struct winbindd_response *response,
 361                                void *c, void *private_data);
 362
 363 void idmap_sid2gid_async(TALLOC_CTX *mem_ctx, const DOM_SID *sid, BOOL alloc,
 364                          void (*cont)(void *private_data, BOOL success, gid_t gid),
 365                          void *private_data)
 366 {
 367         struct winbindd_request request;
 368         ZERO_STRUCT(request);
 369         request.cmd = WINBINDD_DUAL_SID2GID;
 370         sid_to_string(request.data.dual_sid2id.sid, sid);
 371
 372         DEBUG(7,("idmap_sid2gid_async: Resolving %s to a gid\n",
 373                 request.data.dual_sid2id.sid));
 374
 375         request.data.dual_sid2id.alloc = alloc;
 376         do_async(mem_ctx, idmap_child(), &request, idmap_sid2gid_recv,
 377                  (void *)cont, private_data);
 378 }
 379
 380 enum winbindd_result winbindd_dual_sid2gid(struct winbindd_domain *domain,
 381                                            struct winbindd_cli_state *state)
 382 {
 383         DOM_SID sid;
 384         NTSTATUS result;
 385
 386         DEBUG(3, ("[%5lu]: sid to gid %s\n", (unsigned long)state->pid,
 387                   state->request.data.dual_sid2id.sid));
 388
 389         if (!string_to_sid(&sid, state->request.data.dual_sid2id.sid)) {
 390                 DEBUG(1, ("Could not get convert sid %s from string\n",
 391                           state->request.data.dual_sid2id.sid));
 392                 return WINBINDD_ERROR;
 393         }
 394
 395         /* Find gid for this sid and return it, possibly ask the slow remote
 396          * idmap */
 397
 398         result = idmap_sid_to_gid(&sid, &state->response.data.gid,
 399                                   state->request.data.dual_sid2id.alloc ?
 400                                   0 : IDMAP_FLAG_QUERY_ONLY);
 401
 402         /* If the lookup failed, the perhaps we need to look
 403            at the passdb for local groups */
 404
 405         if ( !NT_STATUS_IS_OK(result) ) {
 406                 if ( sid_to_gid( &sid, &(state->response.data.gid) ) ) {
 407                         result = NT_STATUS_OK;
 408                 }
 409         }
 410
 411         return NT_STATUS_IS_OK(result) ? WINBINDD_OK : WINBINDD_ERROR;
 412 }
 413
 414 static void idmap_sid2gid_recv(TALLOC_CTX *mem_ctx, BOOL success,
 415                                struct winbindd_response *response,
 416                                void *c, void *private_data)
 417 {
 418         void (*cont)(void *priv, BOOL succ, gid_t gid) =
 419                 (void (*)(void *, BOOL, gid_t))c;
 420
 421         if (!success) {
 422                 DEBUG(5, ("Could not trigger sid2gid\n"));
 423                 cont(private_data, False, 0);
 424                 return;
 425         }
 426
 427         if (response->result != WINBINDD_OK) {
 428                 DEBUG(5, ("sid2gid returned an error\n"));
 429                 cont(private_data, False, 0);
 430                 return;
 431         }
 432
 433         cont(private_data, True, response->data.gid);
 434 }
 435
 436 static void gid2name_recv(TALLOC_CTX *mem_ctx, BOOL success,
 437                           struct winbindd_response *response,
 438                           void *c, void *private_data)
 439 {
 440         void (*cont)(void *priv, BOOL succ, const char *name) =
 441                 (void (*)(void *, BOOL, const char *))c;
 442
 443         if (!success) {
 444                 DEBUG(5, ("Could not trigger gid2name\n"));
 445                 cont(private_data, False, NULL);
 446                 return;
 447         }
 448
 449         if (response->result != WINBINDD_OK) {
 450                 DEBUG(5, ("gid2name returned an error\n"));
 451                 cont(private_data, False, NULL);
 452                 return;
 453         }
 454
 455         cont(private_data, True, response->data.name.name);
 456 }
 457
 458 void winbindd_gid2name_async(TALLOC_CTX *mem_ctx, gid_t gid,
 459                              void (*cont)(void *private_data, BOOL success,
 460                                           const char *name),
 461                              void *private_data)
 462 {
 463         struct winbindd_request request;
 464         ZERO_STRUCT(request);
 465         request.cmd = WINBINDD_DUAL_GID2NAME;
 466         request.data.gid = gid;
 467         do_async(mem_ctx, idmap_child(), &request, gid2name_recv,
 468                  (void *)cont, private_data);
 469 }
 470
 471 enum winbindd_result winbindd_dual_gid2name(struct winbindd_domain *domain,
 472                                             struct winbindd_cli_state *state)
 473 {
 474         struct group *gr;
 475
 476         DEBUG(3, ("[%5lu]: gid2name %lu\n", (unsigned long)state->pid,
 477                   (unsigned long)state->request.data.gid));
 478
 479         gr = getgrgid(state->request.data.gid);
 480         if (gr == NULL)
 481                 return WINBINDD_ERROR;
 482
 483         fstrcpy(state->response.data.name.name, gr->gr_name);
 484         return WINBINDD_OK;
 485 }
 486
 487 static void name2gid_recv(TALLOC_CTX *mem_ctx, BOOL success,
 488                           struct winbindd_response *response,
 489                           void *c, void *private_data);
 490
 491 static void winbindd_name2gid_async(TALLOC_CTX *mem_ctx, const char *name,
 492                                     void (*cont)(void *private_data, BOOL success,
 493                                                  gid_t gid),
 494                                     void *private_data)
 495 {
 496         struct winbindd_request request;
 497         ZERO_STRUCT(request);
 498         request.cmd = WINBINDD_DUAL_NAME2GID;
 499         fstrcpy(request.data.groupname, name);
 500         do_async(mem_ctx, idmap_child(), &request, name2gid_recv,
 501                  (void *)cont, private_data);
 502 }
 503
 504 enum winbindd_result winbindd_dual_name2gid(struct winbindd_domain *domain,
 505                                             struct winbindd_cli_state *state)
 506 {
 507         struct group *gr;
 508
 509         /* Ensure null termination */
 510         state->request.data.groupname
 511                 [sizeof(state->request.data.groupname)-1] = '\0';
 512
 513         DEBUG(3, ("[%5lu]: name2gid %s\n", (unsigned long)state->pid,
 514                   state->request.data.groupname));
 515
 516         gr = getgrnam(state->request.data.groupname);
 517         if (gr == NULL) {
 518                 return WINBINDD_ERROR;
 519         }
 520
 521         state->response.data.gid = gr->gr_gid;
 522         return WINBINDD_OK;
 523 }
 524
 525 static void name2gid_recv(TALLOC_CTX *mem_ctx, BOOL success,
 526                           struct winbindd_response *response,
 527                           void *c, void *private_data)
 528 {
 529         void (*cont)(void *priv, BOOL succ, gid_t gid) =
 530                 (void (*)(void *, BOOL, gid_t))c;
 531
 532         if (!success) {
 533                 DEBUG(5, ("Could not trigger name2gid\n"));
 534                 cont(private_data, False, 0);
 535                 return;
 536         }
 537
 538         if (response->result != WINBINDD_OK) {
 539                 DEBUG(5, ("name2gid returned an error\n"));
 540                 cont(private_data, False, 0);
 541                 return;
 542         }
 543
 544         cont(private_data, True, response->data.gid);
 545 }
 546
 547
 548 static void lookupsid_recv(TALLOC_CTX *mem_ctx, BOOL success,
 549                            struct winbindd_response *response,
 550                            void *c, void *private_data)
 551 {
 552         void (*cont)(void *priv, BOOL succ, const char *dom_name,
 553                      const char *name, enum SID_NAME_USE type) =
 554                 (void (*)(void *, BOOL, const char *, const char *,
 555                           enum SID_NAME_USE))c;
 556
 557         if (!success) {
 558                 DEBUG(5, ("Could not trigger lookupsid\n"));
 559                 cont(private_data, False, NULL, NULL, SID_NAME_UNKNOWN);
 560                 return;
 561         }
 562
 563         if (response->result != WINBINDD_OK) {
 564                 DEBUG(5, ("lookupsid returned an error\n"));
 565                 cont(private_data, False, NULL, NULL, SID_NAME_UNKNOWN);
 566                 return;
 567         }
 568
 569         cont(private_data, True, response->data.name.dom_name,
 570              response->data.name.name,
 571              (enum SID_NAME_USE)response->data.name.type);
 572 }
 573
 574 void winbindd_lookupsid_async(TALLOC_CTX *mem_ctx, const DOM_SID *sid,
 575                               void (*cont)(void *private_data, BOOL success,
 576                                            const char *dom_name,
 577                                            const char *name,
 578                                            enum SID_NAME_USE type),
 579                               void *private_data)
 580 {
 581         struct winbindd_domain *domain;
 582         struct winbindd_request request;
 583
 584         domain = find_lookup_domain_from_sid(sid);
 585         if (domain == NULL) {
 586                 DEBUG(5, ("Could not find domain for sid %s\n",
 587                           sid_string_static(sid)));
 588                 cont(private_data, False, NULL, NULL, SID_NAME_UNKNOWN);
 589                 return;
 590         }
 591
 592         ZERO_STRUCT(request);
 593         request.cmd = WINBINDD_LOOKUPSID;
 594         fstrcpy(request.data.sid, sid_string_static(sid));
 595
 596         do_async_domain(mem_ctx, domain, &request, lookupsid_recv,
 597                         (void *)cont, private_data);
 598 }
 599
 600 enum winbindd_result winbindd_dual_lookupsid(struct winbindd_domain *domain,
 601                                              struct winbindd_cli_state *state)
 602 {
 603         enum SID_NAME_USE type;
 604         DOM_SID sid;
 605         fstring name;
 606         fstring dom_name;
 607
 608         /* Ensure null termination */
 609         state->request.data.sid[sizeof(state->request.data.sid)-1]='\0';
 610
 611         DEBUG(3, ("[%5lu]: lookupsid %s\n", (unsigned long)state->pid,
 612                   state->request.data.sid));
 613
 614         /* Lookup sid from PDC using lsa_lookup_sids() */
 615
 616         if (!string_to_sid(&sid, state->request.data.sid)) {
 617                 DEBUG(5, ("%s not a SID\n", state->request.data.sid));
 618                 return WINBINDD_ERROR;
 619         }
 620
 621         /* Lookup the sid */
 622
 623         if (!winbindd_lookup_name_by_sid(state->mem_ctx, &sid, dom_name, name,
 624                                          &type)) {
 625                 return WINBINDD_ERROR;
 626         }
 627
 628         fstrcpy(state->response.data.name.dom_name, dom_name);
 629         fstrcpy(state->response.data.name.name, name);
 630         state->response.data.name.type = type;
 631
 632         return WINBINDD_OK;
 633 }
 634
 635 static void lookupname_recv(TALLOC_CTX *mem_ctx, BOOL success,
 636                             struct winbindd_response *response,
 637                             void *c, void *private_data)
 638 {
 639         void (*cont)(void *priv, BOOL succ, const DOM_SID *sid,
 640                      enum SID_NAME_USE type) =
 641                 (void (*)(void *, BOOL, const DOM_SID *, enum SID_NAME_USE))c;
 642         DOM_SID sid;
 643
 644         if (!success) {
 645                 DEBUG(5, ("Could not trigger lookup_name\n"));
 646                 cont(private_data, False, NULL, SID_NAME_UNKNOWN);
 647                 return;
 648         }
 649
 650         if (response->result != WINBINDD_OK) {
 651                 DEBUG(5, ("lookup_name returned an error\n"));
 652                 cont(private_data, False, NULL, SID_NAME_UNKNOWN);
 653                 return;
 654         }
 655
 656         if (!string_to_sid(&sid, response->data.sid.sid)) {
 657                 DEBUG(0, ("Could not convert string %s to sid\n",
 658                           response->data.sid.sid));
 659                 cont(private_data, False, NULL, SID_NAME_UNKNOWN);
 660                 return;
 661         }
 662
 663         cont(private_data, True, &sid,
 664              (enum SID_NAME_USE)response->data.sid.type);
 665 }
 666
 667 void winbindd_lookupname_async(TALLOC_CTX *mem_ctx, const char *dom_name,
 668                                const char *name,
 669                                void (*cont)(void *private_data, BOOL success,
 670                                             const DOM_SID *sid,
 671                                             enum SID_NAME_USE type),
 672                                void *private_data)
 673 {
 674         struct winbindd_request request;
 675         struct winbindd_domain *domain;
 676
 677         domain = find_lookup_domain_from_name(dom_name);
 678
 679         if (domain == NULL) {
 680                 DEBUG(5, ("Could not find domain for name %s\n", dom_name));
 681                 cont(private_data, False, NULL, SID_NAME_UNKNOWN);
 682                 return;
 683         }
 684
 685         ZERO_STRUCT(request);
 686         request.cmd = WINBINDD_LOOKUPNAME;
 687         fstrcpy(request.data.name.dom_name, dom_name);
 688         fstrcpy(request.data.name.name, name);
 689
 690         do_async_domain(mem_ctx, domain, &request, lookupname_recv,
 691                         (void *)cont, private_data);
 692 }
 693
 694 enum winbindd_result winbindd_dual_lookupname(struct winbindd_domain *domain,
 695                                               struct winbindd_cli_state *state)
 696 {
 697         enum SID_NAME_USE type;
 698         char *name_domain, *name_user;
 699         DOM_SID sid;
 700         char *p;
 701
 702         /* Ensure null termination */
 703         state->request.data.sid[sizeof(state->request.data.name.dom_name)-1]='\0';
 704
 705         /* Ensure null termination */
 706         state->request.data.sid[sizeof(state->request.data.name.name)-1]='\0';
 707
 708         /* cope with the name being a fully qualified name */
 709         p = strstr(state->request.data.name.name, lp_winbind_separator());
 710         if (p) {
 711                 *p = 0;
 712                 name_domain = state->request.data.name.name;
 713                 name_user = p+1;
 714         } else {
 715                 name_domain = state->request.data.name.dom_name;
 716                 name_user = state->request.data.name.name;
 717         }
 718
 719         DEBUG(3, ("[%5lu]: lookupname %s%s%s\n", (unsigned long)state->pid,
 720                   name_domain, lp_winbind_separator(), name_user));
 721
 722         /* Lookup name from PDC using lsa_lookup_names() */
 723         if (!winbindd_lookup_sid_by_name(state->mem_ctx, domain, name_domain,
 724                                          name_user, &sid, &type)) {
 725                 return WINBINDD_ERROR;
 726         }
 727
 728         sid_to_string(state->response.data.sid.sid, &sid);
 729         state->response.data.sid.type = type;
 730
 731         return WINBINDD_OK;
 732 }
 733
 734 BOOL print_sidlist(TALLOC_CTX *mem_ctx, const DOM_SID *sids,
 735                    size_t num_sids, char **result, ssize_t *len)
 736 {
 737         size_t i;
 738         size_t buflen = 0;
 739
 740         *len = 0;
 741         *result = NULL;
 742         for (i=0; i<num_sids; i++) {
 743                 sprintf_append(mem_ctx, result, len, &buflen,
 744                                "%s\n", sid_string_static(&sids[i]));
 745         }
 746
 747         if ((num_sids != 0) && (*result == NULL)) {
 748                 return False;
 749         }
 750
 751         return True;
 752 }
 753
 754 static BOOL parse_sidlist(TALLOC_CTX *mem_ctx, char *sidstr,
 755                           DOM_SID **sids, size_t *num_sids)
 756 {
 757         char *p, *q;
 758
 759         p = sidstr;
 760         if (p == NULL)
 761                 return False;
 762
 763         while (p[0] != '\0') {
 764                 DOM_SID sid;
 765                 q = strchr(p, '\n');
 766                 if (q == NULL) {
 767                         DEBUG(0, ("Got invalid sidstr: %s\n", p));
 768                         return False;
 769                 }
 770                 *q = '\0';
 771                 q += 1;
 772                 if (!string_to_sid(&sid, p)) {
 773                         DEBUG(0, ("Could not parse sid %s\n", p));
 774                         return False;
 775                 }
 776                 add_sid_to_array(mem_ctx, &sid, sids, num_sids);
 777                 p = q;
 778         }
 779         return True;
 780 }
 781
 782 static BOOL parse_ridlist(TALLOC_CTX *mem_ctx, char *ridstr,
 783                           uint32 **rids, size_t *num_rids)
 784 {
 785         char *p;
 786
 787         p = ridstr;
 788         if (p == NULL)
 789                 return False;
 790
 791         while (p[0] != '\0') {
 792                 uint32 rid;
 793                 char *q;
 794                 rid = strtoul(p, &q, 10);
 795                 if (*q != '\n') {
 796                         DEBUG(0, ("Got invalid ridstr: %s\n", p));
 797                         return False;
 798                 }
 799                 p = q+1;
 800                 ADD_TO_ARRAY(mem_ctx, uint32, rid, rids, num_rids);
 801         }
 802         return True;
 803 }
 804
 805 enum winbindd_result winbindd_dual_lookuprids(struct winbindd_domain *domain,
 806                                               struct winbindd_cli_state *state)
 807 {
 808         uint32 *rids = NULL;
 809         size_t i, buflen, num_rids = 0;
 810         ssize_t len;
 811         DOM_SID domain_sid;
 812         char *domain_name;
 813         char **names;
 814         enum SID_NAME_USE *types;
 815         NTSTATUS status;
 816         char *result;
 817
 818         DEBUG(10, ("Looking up RIDs for domain %s (%s)\n",
 819                    state->request.domain_name,
 820                    state->request.data.sid));
 821
 822         if (!parse_ridlist(state->mem_ctx, state->request.extra_data.data,
 823                            &rids, &num_rids)) {
 824                 DEBUG(5, ("Could not parse ridlist\n"));
 825                 return WINBINDD_ERROR;
 826         }
 827
 828         if (!string_to_sid(&domain_sid, state->request.data.sid)) {
 829                 DEBUG(5, ("Could not parse domain sid %s\n",
 830                           state->request.data.sid));
 831                 return WINBINDD_ERROR;
 832         }
 833
 834         status = domain->methods->rids_to_names(domain, state->mem_ctx,
 835                                                 &domain_sid, rids, num_rids,
 836                                                 &domain_name,
 837                                                 &names, &types);
 838
 839         if (!NT_STATUS_IS_OK(status) &&
 840             !NT_STATUS_EQUAL(status, STATUS_SOME_UNMAPPED)) {
 841                 return WINBINDD_ERROR;
 842         }
 843
 844         len = 0;
 845         buflen = 0;
 846         result = NULL;
 847
 848         for (i=0; i<num_rids; i++) {
 849                 sprintf_append(state->mem_ctx, &result, &len, &buflen,
 850                                "%d %s\n", types[i], names[i]);
 851         }
 852
 853         fstrcpy(state->response.data.domain_name, domain_name);
 854
 855         if (result != NULL) {
 856                 state->response.extra_data.data = SMB_STRDUP(result);
 857                 state->response.length += len+1;
 858         }
 859
 860         return WINBINDD_OK;
 861 }
 862
 863 static void getsidaliases_recv(TALLOC_CTX *mem_ctx, BOOL success,
 864                                struct winbindd_response *response,
 865                                void *c, void *private_data)
 866 {
 867         void (*cont)(void *priv, BOOL succ,
 868                      DOM_SID *aliases, size_t num_aliases) =
 869                 (void (*)(void *, BOOL, DOM_SID *, size_t))c;
 870         char *aliases_str;
 871         DOM_SID *sids = NULL;
 872         size_t num_sids = 0;
 873
 874         if (!success) {
 875                 DEBUG(5, ("Could not trigger getsidaliases\n"));
 876                 cont(private_data, success, NULL, 0);
 877                 return;
 878         }
 879
 880         if (response->result != WINBINDD_OK) {
 881                 DEBUG(5, ("getsidaliases returned an error\n"));
 882                 cont(private_data, False, NULL, 0);
 883                 return;
 884         }
 885
 886         aliases_str = (char *)response->extra_data.data;
 887
 888         if (aliases_str == NULL) {
 889                 DEBUG(10, ("getsidaliases return 0 SIDs\n"));
 890                 cont(private_data, True, NULL, 0);
 891                 return;
 892         }
 893
 894         if (!parse_sidlist(mem_ctx, aliases_str, &sids, &num_sids)) {
 895                 DEBUG(0, ("Could not parse sids\n"));
 896                 cont(private_data, False, NULL, 0);
 897                 return;
 898         }
 899
 900         SAFE_FREE(response->extra_data.data);
 901
 902         cont(private_data, True, sids, num_sids);
 903 }
 904
 905 void winbindd_getsidaliases_async(struct winbindd_domain *domain,
 906                                   TALLOC_CTX *mem_ctx,
 907                                   const DOM_SID *sids, size_t num_sids,
 908                                   void (*cont)(void *private_data,
 909                                                BOOL success,
 910                                                const DOM_SID *aliases,
 911                                                size_t num_aliases),
 912                                   void *private_data)
 913 {
 914         struct winbindd_request request;
 915         char *sidstr = NULL;
 916         ssize_t len;
 917
 918         if (num_sids == 0) {
 919                 cont(private_data, True, NULL, 0);
 920                 return;
 921         }
 922
 923         if (!print_sidlist(mem_ctx, sids, num_sids, &sidstr, &len)) {
 924                 cont(private_data, False, NULL, 0);
 925                 return;
 926         }
 927
 928         ZERO_STRUCT(request);
 929         request.cmd = WINBINDD_DUAL_GETSIDALIASES;
 930         request.extra_len = len;
 931         request.extra_data.data = sidstr;
 932
 933         do_async_domain(mem_ctx, domain, &request, getsidaliases_recv,
 934                         (void *)cont, private_data);
 935 }
 936
 937 enum winbindd_result winbindd_dual_getsidaliases(struct winbindd_domain *domain,
 938                                                  struct winbindd_cli_state *state)
 939 {
 940         DOM_SID *sids = NULL;
 941         size_t num_sids = 0;
 942         char *sidstr;
 943         ssize_t len;
 944         size_t i;
 945         uint32 num_aliases;
 946         uint32 *alias_rids;
 947         NTSTATUS result;
 948
 949         DEBUG(3, ("[%5lu]: getsidaliases\n", (unsigned long)state->pid));
 950
 951         sidstr = state->request.extra_data.data;
 952         if (sidstr == NULL)
 953                 sidstr = talloc_strdup(state->mem_ctx, "\n"); /* No SID */
 954
 955         DEBUG(10, ("Sidlist: %s\n", sidstr));
 956
 957         if (!parse_sidlist(state->mem_ctx, sidstr, &sids, &num_sids)) {
 958                 DEBUG(0, ("Could not parse SID list: %s\n", sidstr));
 959                 return WINBINDD_ERROR;
 960         }
 961
 962         num_aliases = 0;
 963         alias_rids = NULL;
 964
 965         result = domain->methods->lookup_useraliases(domain,
 966                                                      state->mem_ctx,
 967                                                      num_sids, sids,
 968                                                      &num_aliases,
 969                                                      &alias_rids);
 970
 971         if (!NT_STATUS_IS_OK(result)) {
 972                 DEBUG(3, ("Could not lookup_useraliases: %s\n",
 973                           nt_errstr(result)));
 974                 return WINBINDD_ERROR;
 975         }
 976
 977         num_sids = 0;
 978         sids = NULL;
 979
 980         DEBUG(10, ("Got %d aliases\n", num_aliases));
 981
 982         for (i=0; i<num_aliases; i++) {
 983                 DOM_SID sid;
 984                 DEBUGADD(10, (" rid %d\n", alias_rids[i]));
 985                 sid_copy(&sid, &domain->sid);
 986                 sid_append_rid(&sid, alias_rids[i]);
 987                 add_sid_to_array(state->mem_ctx, &sid, &sids, &num_sids);
 988         }
 989
 990
 991         if (!print_sidlist(NULL, sids, num_sids, &sidstr, &len)) {
 992                 DEBUG(0, ("Could not print_sidlist\n"));
 993                 state->response.extra_data.data = NULL;
 994                 return WINBINDD_ERROR;
 995         }
 996
 997         state->response.extra_data.data = sidstr;
 998
 999         if (state->response.extra_data.data != NULL) {
1000                 DEBUG(10, ("aliases_list: %s\n",
1001                            (char *)state->response.extra_data.data));
1002                 state->response.length += len+1;
1003         }
1004
1005         return WINBINDD_OK;
1006 }
1007
1008 struct gettoken_state {
1009         TALLOC_CTX *mem_ctx;
1010         DOM_SID user_sid;
1011         struct winbindd_domain *alias_domain;
1012         struct winbindd_domain *local_alias_domain;
1013         struct winbindd_domain *builtin_domain;
1014         DOM_SID *sids;
1015         size_t num_sids;
1016         void (*cont)(void *private_data, BOOL success, DOM_SID *sids, size_t num_sids);
1017         void *private_data;
1018 };
1019
1020 static void gettoken_recvdomgroups(TALLOC_CTX *mem_ctx, BOOL success,
1021                                    struct winbindd_response *response,
1022                                    void *c, void *private_data);
1023 static void gettoken_recvaliases(void *private_data, BOOL success,
1024                                  const DOM_SID *aliases,
1025                                  size_t num_aliases);
1026
1027
1028 void winbindd_gettoken_async(TALLOC_CTX *mem_ctx, const DOM_SID *user_sid,
1029                              void (*cont)(void *private_data, BOOL success,
1030                                           DOM_SID *sids, size_t num_sids),
1031                              void *private_data)
1032 {
1033         struct winbindd_domain *domain;
1034         struct winbindd_request request;
1035         struct gettoken_state *state;
1036
1037         state = TALLOC_P(mem_ctx, struct gettoken_state);
1038         if (state == NULL) {
1039                 DEBUG(0, ("talloc failed\n"));
1040                 cont(private_data, False, NULL, 0);
1041                 return;
1042         }
1043
1044         state->mem_ctx = mem_ctx;
1045         sid_copy(&state->user_sid, user_sid);
1046         state->alias_domain = find_our_domain();
1047         state->local_alias_domain = find_domain_from_name( get_global_sam_name() );
1048         state->builtin_domain = find_builtin_domain();
1049         state->cont = cont;
1050         state->private_data = private_data;
1051
1052         domain = find_domain_from_sid_noinit(user_sid);
1053         if (domain == NULL) {
1054                 DEBUG(5, ("Could not find domain from SID %s\n",
1055                           sid_string_static(user_sid)));
1056                 cont(private_data, False, NULL, 0);
1057                 return;
1058         }
1059
1060         ZERO_STRUCT(request);
1061         request.cmd = WINBINDD_GETUSERDOMGROUPS;
1062         fstrcpy(request.data.sid, sid_string_static(user_sid));
1063
1064         do_async_domain(mem_ctx, domain, &request, gettoken_recvdomgroups,
1065                         NULL, state);
1066 }
1067
1068 static void gettoken_recvdomgroups(TALLOC_CTX *mem_ctx, BOOL success,
1069                                    struct winbindd_response *response,
1070                                    void *c, void *private_data)
1071 {
1072         struct gettoken_state *state =
1073                 talloc_get_type_abort(private_data, struct gettoken_state);
1074         char *sids_str;
1075
1076         if (!success) {
1077                 DEBUG(10, ("Could not get domain groups\n"));
1078                 state->cont(state->private_data, False, NULL, 0);
1079                 return;
1080         }
1081
1082         sids_str = (char *)response->extra_data.data;
1083
1084         if (sids_str == NULL) {
1085                 /* This could be normal if we are dealing with a
1086                    local user and local groups */
1087
1088                 if ( !sid_check_is_in_our_domain( &state->user_sid ) ) {
1089                         DEBUG(10, ("Received no domain groups\n"));
1090                         state->cont(state->private_data, True, NULL, 0);
1091                         return;
1092                 }
1093         }
1094
1095         state->sids = NULL;
1096         state->num_sids = 0;
1097
1098         add_sid_to_array(mem_ctx, &state->user_sid, &state->sids,
1099                          &state->num_sids);
1100
1101         if (sids_str && !parse_sidlist(mem_ctx, sids_str, &state->sids,
1102                            &state->num_sids)) {
1103                 DEBUG(0, ("Could not parse sids\n"));
1104                 state->cont(state->private_data, False, NULL, 0);
1105                 return;
1106         }
1107
1108         SAFE_FREE(response->extra_data.data);
1109
1110         if (state->alias_domain == NULL) {
1111                 DEBUG(10, ("Don't expand domain local groups\n"));
1112                 state->cont(state->private_data, True, state->sids,
1113                             state->num_sids);
1114                 return;
1115         }
1116
1117         winbindd_getsidaliases_async(state->alias_domain, mem_ctx,
1118                                      state->sids, state->num_sids,
1119                                      gettoken_recvaliases, state);
1120 }
1121
1122 static void gettoken_recvaliases(void *private_data, BOOL success,
1123                                  const DOM_SID *aliases,
1124                                  size_t num_aliases)
1125 {
1126         struct gettoken_state *state = (struct gettoken_state *)private_data;
1127         size_t i;
1128
1129         if (!success) {
1130                 DEBUG(10, ("Could not receive domain local groups\n"));
1131                 state->cont(state->private_data, False, NULL, 0);
1132                 return;
1133         }
1134
1135         for (i=0; i<num_aliases; i++)
1136                 add_sid_to_array(state->mem_ctx, &aliases[i],
1137                                  &state->sids, &state->num_sids);
1138
1139         if (state->local_alias_domain != NULL) {
1140                 struct winbindd_domain *local_domain = state->local_alias_domain;
1141                 DEBUG(10, ("Expanding our own local groups\n"));
1142                 state->local_alias_domain = NULL;
1143                 winbindd_getsidaliases_async(local_domain, state->mem_ctx,
1144                                              state->sids, state->num_sids,
1145                                              gettoken_recvaliases, state);
1146                 return;
1147         }
1148
1149         if (state->builtin_domain != NULL) {
1150                 struct winbindd_domain *builtin_domain = state->builtin_domain;
1151                 DEBUG(10, ("Expanding our own BUILTIN groups\n"));
1152                 state->builtin_domain = NULL;
1153                 winbindd_getsidaliases_async(builtin_domain, state->mem_ctx,
1154                                              state->sids, state->num_sids,
1155                                              gettoken_recvaliases, state);
1156                 return;
1157         }
1158
1159         state->cont(state->private_data, True, state->sids, state->num_sids);
1160 }
1161
1162 struct sid2uid_state {
1163         TALLOC_CTX *mem_ctx;
1164         DOM_SID sid;
1165         char *username;
1166         uid_t uid;
1167         void (*cont)(void *private_data, BOOL success, uid_t uid);
1168         void *private_data;
1169 };
1170
1171 static void sid2uid_lookup_sid_recv(void *private_data, BOOL success,
1172                                     const char *dom_name, const char *name,
1173                                     enum SID_NAME_USE type);
1174 static void sid2uid_noalloc_recv(void *private_data, BOOL success, uid_t uid);
1175 static void sid2uid_alloc_recv(void *private_data, BOOL success, uid_t uid);
1176 static void sid2uid_name2uid_recv(void *private_data, BOOL success, uid_t uid);
1177 static void sid2uid_set_mapping_recv(void *private_data, BOOL success);
1178
1179 void winbindd_sid2uid_async(TALLOC_CTX *mem_ctx, const DOM_SID *sid,
1180                             void (*cont)(void *private_data, BOOL success,
1181                                          uid_t uid),
1182                             void *private_data)
1183 {
1184         struct sid2uid_state *state;
1185         NTSTATUS result;
1186         uid_t uid;
1187
1188         if (idmap_proxyonly()) {
1189                 DEBUG(10, ("idmap proxy only\n"));
1190                 cont(private_data, False, 0);
1191                 return;
1192         }
1193
1194         /* Query only the local tdb, everything else might possibly block */
1195
1196         result = idmap_sid_to_uid(sid, &uid, IDMAP_FLAG_QUERY_ONLY|IDMAP_FLAG_CACHE_ONLY);
1197
1198         if (NT_STATUS_IS_OK(result)) {
1199                 cont(private_data, True, uid);
1200                 return;
1201         }
1202
1203         state = TALLOC_P(mem_ctx, struct sid2uid_state);
1204         if (state == NULL) {
1205                 DEBUG(0, ("talloc failed\n"));
1206                 cont(private_data, False, 0);
1207                 return;
1208         }
1209
1210         state->mem_ctx = mem_ctx;
1211         state->sid = *sid;
1212         state->cont = cont;
1213         state->private_data = private_data;
1214
1215         /* Let's see if it's really a user before allocating a uid */
1216
1217         winbindd_lookupsid_async(mem_ctx, sid, sid2uid_lookup_sid_recv, state);
1218 }
1219
1220 static void sid2uid_lookup_sid_recv(void *private_data, BOOL success,
1221                                     const char *dom_name, const char *name,
1222                                     enum SID_NAME_USE type)
1223 {
1224         struct sid2uid_state *state =
1225                 talloc_get_type_abort(private_data, struct sid2uid_state);
1226
1227         if (!success) {
1228                 DEBUG(5, ("Could not trigger lookup_sid\n"));
1229                 state->cont(state->private_data, False, 0);
1230                 return;
1231         }
1232
1233         if ((type != SID_NAME_USER) && (type != SID_NAME_COMPUTER)) {
1234                 DEBUG(5, ("SID is not a user\n"));
1235                 state->cont(state->private_data, False, 0);
1236                 return;
1237         }
1238
1239         state->username = talloc_strdup(state->mem_ctx, name);
1240
1241         /* Ask the possibly blocking remote IDMAP */
1242
1243         idmap_sid2uid_async(state->mem_ctx, &state->sid, False,
1244                             sid2uid_noalloc_recv, state);
1245 }
1246
1247 static void sid2uid_noalloc_recv(void *private_data, BOOL success, uid_t uid)
1248 {
1249         struct sid2uid_state *state =
1250                 talloc_get_type_abort(private_data, struct sid2uid_state);
1251
1252         if (success) {
1253                 DEBUG(10, ("found uid for sid %s in remote backend\n",
1254                            sid_string_static(&state->sid)));
1255                 state->cont(state->private_data, True, uid);
1256                 return;
1257         }
1258
1259         if (lp_winbind_trusted_domains_only() &&
1260             (sid_compare_domain(&state->sid, &find_our_domain()->sid) == 0)) {
1261                 DEBUG(10, ("Trying to go via nss\n"));
1262                 winbindd_name2uid_async(state->mem_ctx, state->username,
1263                                         sid2uid_name2uid_recv, state);
1264                 return;
1265         }
1266
1267         /* To be done: Here we're going to try the unixinfo pipe */
1268
1269         /* Now allocate a uid */
1270
1271         idmap_sid2uid_async(state->mem_ctx, &state->sid, True,
1272                             sid2uid_alloc_recv, state);
1273 }
1274
1275 static void sid2uid_alloc_recv(void *private_data, BOOL success, uid_t uid)
1276 {
1277         struct sid2uid_state *state =
1278                 talloc_get_type_abort(private_data, struct sid2uid_state);
1279
1280         if (!success) {
1281                 DEBUG(5, ("Could not allocate uid\n"));
1282                 state->cont(state->private_data, False, 0);
1283                 return;
1284         }
1285
1286         state->cont(state->private_data, True, uid);
1287 }
1288
1289 static void sid2uid_name2uid_recv(void *private_data, BOOL success, uid_t uid)
1290 {
1291         struct sid2uid_state *state =
1292                 talloc_get_type_abort(private_data, struct sid2uid_state);
1293         unid_t id;
1294
1295         if (!success) {
1296                 DEBUG(5, ("Could not find uid for name %s\n",
1297                           state->username));
1298                 state->cont(state->private_data, False, 0);
1299                 return;
1300         }
1301
1302         state->uid = uid;
1303
1304         id.uid = uid;
1305         idmap_set_mapping_async(state->mem_ctx, &state->sid, id, ID_USERID,
1306                                 sid2uid_set_mapping_recv, state);
1307 }
1308
1309 static void sid2uid_set_mapping_recv(void *private_data, BOOL success)
1310 {
1311         struct sid2uid_state *state =
1312                 talloc_get_type_abort(private_data, struct sid2uid_state);
1313
1314         if (!success) {
1315                 DEBUG(5, ("Could not set ID mapping for sid %s\n",
1316                           sid_string_static(&state->sid)));
1317                 state->cont(state->private_data, False, 0);
1318                 return;
1319         }
1320
1321         state->cont(state->private_data, True, state->uid);
1322 }
1323
1324 struct sid2gid_state {
1325         TALLOC_CTX *mem_ctx;
1326         DOM_SID sid;
1327         char *groupname;
1328         gid_t gid;
1329         void (*cont)(void *private_data, BOOL success, gid_t gid);
1330         void *private_data;
1331 };
1332
1333 static void sid2gid_lookup_sid_recv(void *private_data, BOOL success,
1334                                     const char *dom_name, const char *name,
1335                                     enum SID_NAME_USE type);
1336 static void sid2gid_noalloc_recv(void *private_data, BOOL success, gid_t gid);
1337 static void sid2gid_alloc_recv(void *private_data, BOOL success, gid_t gid);
1338 static void sid2gid_name2gid_recv(void *private_data, BOOL success, gid_t gid);
1339 static void sid2gid_set_mapping_recv(void *private_data, BOOL success);
1340
1341 void winbindd_sid2gid_async(TALLOC_CTX *mem_ctx, const DOM_SID *sid,
1342                             void (*cont)(void *private_data, BOOL success,
1343                                          gid_t gid),
1344                             void *private_data)
1345 {
1346         struct sid2gid_state *state;
1347         NTSTATUS result;
1348         gid_t gid;
1349
1350         if (idmap_proxyonly()) {
1351                 DEBUG(10, ("idmap proxy only\n"));
1352                 cont(private_data, False, 0);
1353                 return;
1354         }
1355
1356         /* Query only the local tdb, everything else might possibly block */
1357
1358         result = idmap_sid_to_gid(sid, &gid, IDMAP_FLAG_QUERY_ONLY|IDMAP_FLAG_CACHE_ONLY);
1359
1360         if (NT_STATUS_IS_OK(result)) {
1361                 cont(private_data, True, gid);
1362                 return;
1363         }
1364
1365         state = TALLOC_P(mem_ctx, struct sid2gid_state);
1366         if (state == NULL) {
1367                 DEBUG(0, ("talloc failed\n"));
1368                 cont(private_data, False, 0);
1369                 return;
1370         }
1371
1372         state->mem_ctx = mem_ctx;
1373         state->sid = *sid;
1374         state->cont = cont;
1375         state->private_data = private_data;
1376
1377         /* Let's see if it's really a user before allocating a gid */
1378
1379         winbindd_lookupsid_async(mem_ctx, sid, sid2gid_lookup_sid_recv, state);
1380 }
1381
1382 static void sid2gid_lookup_sid_recv(void *private_data, BOOL success,
1383                                     const char *dom_name, const char *name,
1384                                     enum SID_NAME_USE type)
1385 {
1386         struct sid2gid_state *state =
1387                 talloc_get_type_abort(private_data, struct sid2gid_state);
1388
1389         if (!success) {
1390                 DEBUG(5, ("Could not trigger lookup_sid\n"));
1391                 state->cont(state->private_data, False, 0);
1392                 return;
1393         }
1394
1395         if (((type != SID_NAME_DOM_GRP) && (type != SID_NAME_ALIAS) &&
1396              (type != SID_NAME_WKN_GRP))) {
1397                 DEBUG(5, ("SID is not a group\n"));
1398                 state->cont(state->private_data, False, 0);
1399                 return;
1400         }
1401
1402         state->groupname = talloc_strdup(state->mem_ctx, name);
1403
1404         /* Ask the possibly blocking remote IDMAP and allocate  */
1405
1406         idmap_sid2gid_async(state->mem_ctx, &state->sid, False,
1407                             sid2gid_noalloc_recv, state);
1408 }
1409
1410 static void sid2gid_noalloc_recv(void *private_data, BOOL success, gid_t gid)
1411 {
1412         struct sid2gid_state *state =
1413                 talloc_get_type_abort(private_data, struct sid2gid_state);
1414
1415         if (success) {
1416                 DEBUG(10, ("found gid for sid %s in remote backend\n",
1417                            sid_string_static(&state->sid)));
1418                 state->cont(state->private_data, True, gid);
1419                 return;
1420         }
1421
1422         if (lp_winbind_trusted_domains_only() &&
1423             (sid_compare_domain(&state->sid, &find_our_domain()->sid) == 0)) {
1424                 DEBUG(10, ("Trying to go via nss\n"));
1425                 winbindd_name2gid_async(state->mem_ctx, state->groupname,
1426                                         sid2gid_name2gid_recv, state);
1427                 return;
1428         }
1429
1430         /* To be done: Here we're going to try the unixinfo pipe */
1431
1432         /* Now allocate a gid */
1433
1434         idmap_sid2gid_async(state->mem_ctx, &state->sid, True,
1435                             sid2gid_alloc_recv, state);
1436 }
1437
1438 static void sid2gid_alloc_recv(void *private_data, BOOL success, gid_t gid)
1439 {
1440         struct sid2gid_state *state =
1441                 talloc_get_type_abort(private_data, struct sid2gid_state);
1442
1443         if (!success) {
1444                 DEBUG(5, ("Could not allocate gid\n"));
1445                 state->cont(state->private_data, False, 0);
1446                 return;
1447         }
1448
1449         state->cont(state->private_data, True, gid);
1450 }
1451
1452 static void sid2gid_name2gid_recv(void *private_data, BOOL success, gid_t gid)
1453 {
1454         struct sid2gid_state *state =
1455                 talloc_get_type_abort(private_data, struct sid2gid_state);
1456         unid_t id;
1457
1458         if (!success) {
1459                 DEBUG(5, ("Could not find gid for name %s\n",
1460                           state->groupname));
1461                 state->cont(state->private_data, False, 0);
1462                 return;
1463         }
1464
1465         state->gid = gid;
1466
1467         id.gid = gid;
1468         idmap_set_mapping_async(state->mem_ctx, &state->sid, id, ID_GROUPID,
1469                                 sid2gid_set_mapping_recv, state);
1470 }
1471
1472 static void sid2gid_set_mapping_recv(void *private_data, BOOL success)
1473 {
1474         struct sid2gid_state *state =
1475                 talloc_get_type_abort(private_data, struct sid2gid_state);
1476
1477         if (!success) {
1478                 DEBUG(5, ("Could not set ID mapping for sid %s\n",
1479                           sid_string_static(&state->sid)));
1480                 state->cont(state->private_data, False, 0);
1481                 return;
1482         }
1483
1484         state->cont(state->private_data, True, state->gid);
1485 }
1486
1487 static void query_user_recv(TALLOC_CTX *mem_ctx, BOOL success,
1488                             struct winbindd_response *response,
1489                             void *c, void *private_data)
1490 {
1491         void (*cont)(void *priv, BOOL succ, const char *acct_name,
1492                      const char *full_name, const char *homedir,
1493                      const char *shell, uint32 group_rid) =
1494                 (void (*)(void *, BOOL, const char *, const char *,
1495                           const char *, const char *, uint32))c;
1496
1497         if (!success) {
1498                 DEBUG(5, ("Could not trigger query_user\n"));
1499                 cont(private_data, False, NULL, NULL, NULL, NULL, -1);
1500                 return;
1501         }
1502
1503         cont(private_data, True, response->data.user_info.acct_name,
1504              response->data.user_info.full_name,
1505              response->data.user_info.homedir,
1506              response->data.user_info.shell,
1507              response->data.user_info.group_rid);
1508 }
1509
1510 void query_user_async(TALLOC_CTX *mem_ctx, struct winbindd_domain *domain,
1511                       const DOM_SID *sid,
1512                       void (*cont)(void *private_data, BOOL success,
1513                                    const char *acct_name,
1514                                    const char *full_name,
1515                                    const char *homedir,
1516                                    const char *shell,
1517                                    uint32 group_rid),
1518                       void *private_data)
1519 {
1520         struct winbindd_request request;
1521         ZERO_STRUCT(request);
1522         request.cmd = WINBINDD_DUAL_USERINFO;
1523         sid_to_string(request.data.sid, sid);
1524         do_async_domain(mem_ctx, domain, &request, query_user_recv,
1525                         (void *)cont, private_data);
1526 }