source3/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 static 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 if 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         domain = find_lookup_domain_from_name(dom_name);
 386         if (domain == NULL) {
 387                 DEBUG(5, ("Could not find domain for name '%s'\n", dom_name));
 388                 cont(private_data, False, NULL, SID_NAME_UNKNOWN);
 389                 return;
 390         }
 391
 392         ZERO_STRUCT(request);
 393         request.cmd = WINBINDD_LOOKUPNAME;
 394         request.original_cmd = orig_cmd;
 395         fstrcpy(request.data.name.dom_name, dom_name);
 396         fstrcpy(request.data.name.name, name);
 397
 398         if ( (s = TALLOC_ZERO_P(mem_ctx, struct lookupname_state)) == NULL ) {
 399                 DEBUG(0, ("winbindd_lookupname_async: talloc failed\n"));
 400                 cont(private_data, False, NULL, SID_NAME_UNKNOWN);
 401                 return;
 402         }
 403
 404         s->dom_name = talloc_strdup( s, dom_name );
 405         s->name     = talloc_strdup( s, name );
 406         if (!s->dom_name || !s->name) {
 407                 cont(private_data, False, NULL, SID_NAME_UNKNOWN);
 408                 return;
 409         }
 410
 411         s->caller_private_data = private_data;
 412
 413         do_async_domain(mem_ctx, domain, &request, lookupname_recv,
 414                         (void *)cont, s);
 415 }
 416
 417 enum winbindd_result winbindd_dual_lookupname(struct winbindd_domain *domain,
 418                                               struct winbindd_cli_state *state)
 419 {
 420         enum lsa_SidType type;
 421         char *name_domain, *name_user;
 422         DOM_SID sid;
 423         char *p;
 424
 425         /* Ensure null termination */
 426         state->request->data.name.dom_name[sizeof(state->request->data.name.dom_name)-1]='\0';
 427
 428         /* Ensure null termination */
 429         state->request->data.name.name[sizeof(state->request->data.name.name)-1]='\0';
 430
 431         /* cope with the name being a fully qualified name */
 432         p = strstr(state->request->data.name.name, lp_winbind_separator());
 433         if (p) {
 434                 *p = 0;
 435                 name_domain = state->request->data.name.name;
 436                 name_user = p+1;
 437         } else {
 438                 name_domain = state->request->data.name.dom_name;
 439                 name_user = state->request->data.name.name;
 440         }
 441
 442         DEBUG(3, ("[%5lu]: lookupname %s%s%s\n", (unsigned long)state->pid,
 443                   name_domain, lp_winbind_separator(), name_user));
 444
 445         /* Lookup name from DC using lsa_lookup_names() */
 446         if (!winbindd_lookup_sid_by_name(state->mem_ctx, state->request->original_cmd, domain, name_domain,
 447                                          name_user, &sid, &type)) {
 448                 return WINBINDD_ERROR;
 449         }
 450
 451         sid_to_fstring(state->response->data.sid.sid, &sid);
 452         state->response->data.sid.type = type;
 453
 454         return WINBINDD_OK;
 455 }
 456
 457 /* This is the first callback after enumerating users/groups from a domain */
 458 static void listent_recv(TALLOC_CTX *mem_ctx, bool success,
 459                             struct winbindd_response *response,
 460                             void *c, void *private_data)
 461 {
 462         void (*cont)(void *priv, bool succ, fstring dom_name, char *data) =
 463                 (void (*)(void *, bool, fstring, char*))c;
 464
 465         if (!success || response->result != WINBINDD_OK) {
 466                 DEBUG(5, ("list_ent() failed!\n"));
 467                 cont(private_data, False, response->data.name.dom_name, NULL);
 468                 return;
 469         }
 470
 471         cont(private_data, True, response->data.name.dom_name,
 472              (char *)response->extra_data.data);
 473 }
 474
 475 /* Request the name of all users/groups in a single domain */
 476 void winbindd_listent_async(TALLOC_CTX *mem_ctx,
 477                                struct winbindd_domain *domain,
 478                                void (*cont)(void *private_data, bool success,
 479                                      fstring dom_name, char* extra_data),
 480                                void *private_data, enum ent_type type)
 481 {
 482         struct winbindd_request request;
 483
 484         ZERO_STRUCT(request);
 485         if (type == LIST_USERS)
 486                 request.cmd = WINBINDD_LIST_USERS;
 487         else if (type == LIST_GROUPS)
 488                 request.cmd = WINBINDD_LIST_GROUPS;
 489
 490         do_async_domain(mem_ctx, domain, &request, listent_recv,
 491                         (void *)cont, private_data);
 492 }
 493
 494 enum winbindd_result winbindd_dual_list_users(struct winbindd_domain *domain,
 495                                               struct winbindd_cli_state *state)
 496 {
 497         struct wbint_userinfo *info;
 498         NTSTATUS status;
 499         struct winbindd_methods *methods;
 500         uint32 num_entries = 0;
 501         char *extra_data;
 502         uint32_t extra_data_len = 0, i;
 503
 504         /* Must copy domain into response first for debugging in parent */
 505         fstrcpy(state->response->data.name.dom_name, domain->name);
 506
 507         /* Query user info */
 508         methods = domain->methods;
 509         status = methods->query_user_list(domain, state->mem_ctx,
 510                                           &num_entries, &info);
 511
 512         if (!NT_STATUS_IS_OK(status))
 513                 return WINBINDD_ERROR;
 514
 515         if (num_entries == 0)
 516                 return WINBINDD_OK;
 517
 518         /* Allocate some memory for extra data.  Note that we limit
 519            account names to sizeof(fstring) = 256 characters.
 520            +1 for the ',' between group names */
 521         extra_data = talloc_array(state->mem_ctx, char,
 522                                   (sizeof(fstring) + 1) * num_entries);
 523
 524         if (!extra_data) {
 525                 DEBUG(0,("failed to enlarge buffer!\n"));
 526                 return WINBINDD_ERROR;
 527         }
 528
 529         /* Pack user list into extra data fields */
 530         for (i = 0; i < num_entries; i++) {
 531                 fstring acct_name, name;
 532
 533                 if (info[i].acct_name == NULL)
 534                         fstrcpy(acct_name, "");
 535                 else
 536                         fstrcpy(acct_name, info[i].acct_name);
 537
 538                 fill_domain_username(name, domain->name, acct_name, True);
 539                 /* Append to extra data */
 540                 memcpy(&extra_data[extra_data_len], name, strlen(name));
 541                 extra_data_len += strlen(name);
 542                 extra_data[extra_data_len++] = ',';
 543         }
 544
 545         /* Assign extra_data fields in response structure */
 546         if (extra_data) {
 547                 /* remove trailing ',' */
 548                 extra_data[extra_data_len - 1] = '\0';
 549                 state->response->extra_data.data = extra_data;
 550                 state->response->length += extra_data_len;
 551         }
 552
 553         return WINBINDD_OK;
 554 }
 555
 556 enum winbindd_result winbindd_dual_list_groups(struct winbindd_domain *domain,
 557                                                struct winbindd_cli_state *state)
 558 {
 559         struct getent_state groups;
 560         char *extra_data;
 561         uint32_t extra_data_len = 0, i;
 562
 563         ZERO_STRUCT(groups);
 564
 565         /* Must copy domain into response first for debugging in parent */
 566         fstrcpy(state->response->data.name.dom_name, domain->name);
 567         fstrcpy(groups.domain_name, domain->name);
 568
 569         /* Get list of sam groups */
 570         if (!get_sam_group_entries(&groups)) {
 571                 /* this domain is empty or in an error state */
 572                 return WINBINDD_ERROR;
 573         }
 574
 575         /* Allocate some memory for extra data.  Note that we limit
 576            account names to sizeof(fstring) = 256 characters.
 577            +1 for the ',' between group names */
 578         extra_data = talloc_array(
 579                 state->mem_ctx, char,
 580                 (sizeof(fstring) + 1) * groups.num_sam_entries);
 581
 582         if (!extra_data) {
 583                 DEBUG(0,("failed to enlarge buffer!\n"));
 584                 SAFE_FREE(groups.sam_entries);
 585                 return WINBINDD_ERROR;
 586         }
 587
 588         /* Pack group list into extra data fields */
 589         for (i = 0; i < groups.num_sam_entries; i++) {
 590                 char *group_name = ((struct acct_info *)
 591                                     groups.sam_entries)[i].acct_name;
 592                 fstring name;
 593
 594                 fill_domain_username(name, domain->name, group_name, True);
 595                 /* Append to extra data */
 596                 memcpy(&extra_data[extra_data_len], name, strlen(name));
 597                 extra_data_len += strlen(name);
 598                 extra_data[extra_data_len++] = ',';
 599         }
 600
 601         SAFE_FREE(groups.sam_entries);
 602
 603         /* Assign extra_data fields in response structure */
 604         if (extra_data) {
 605                 /* remove trailing ',' */
 606                 extra_data[extra_data_len - 1] = '\0';
 607                 state->response->extra_data.data = extra_data;
 608                 state->response->length += extra_data_len;
 609         }
 610
 611         return WINBINDD_OK;
 612 }
 613
 614 bool print_sidlist(TALLOC_CTX *mem_ctx, const DOM_SID *sids,
 615                    size_t num_sids, char **result, ssize_t *len)
 616 {
 617         size_t i;
 618         size_t buflen = 0;
 619
 620         *len = 0;
 621         *result = NULL;
 622         for (i=0; i<num_sids; i++) {
 623                 fstring tmp;
 624                 sprintf_append(mem_ctx, result, len, &buflen,
 625                                "%s\n", sid_to_fstring(tmp, &sids[i]));
 626         }
 627
 628         if ((num_sids != 0) && (*result == NULL)) {
 629                 return False;
 630         }
 631
 632         return True;
 633 }
 634
 635 bool parse_sidlist(TALLOC_CTX *mem_ctx, const char *sidstr,
 636                    DOM_SID **sids, size_t *num_sids)
 637 {
 638         const char *p, *q;
 639
 640         p = sidstr;
 641         if (p == NULL)
 642                 return False;
 643
 644         while (p[0] != '\0') {
 645                 fstring tmp;
 646                 size_t sidlen;
 647                 DOM_SID sid;
 648                 q = strchr(p, '\n');
 649                 if (q == NULL) {
 650                         DEBUG(0, ("Got invalid sidstr: %s\n", p));
 651                         return False;
 652                 }
 653                 sidlen = PTR_DIFF(q, p);
 654                 if (sidlen >= sizeof(tmp)-1) {
 655                         return false;
 656                 }
 657                 memcpy(tmp, p, sidlen);
 658                 tmp[sidlen] = '\0';
 659                 q += 1;
 660                 if (!string_to_sid(&sid, tmp)) {
 661                         DEBUG(0, ("Could not parse sid %s\n", p));
 662                         return False;
 663                 }
 664                 if (!NT_STATUS_IS_OK(add_sid_to_array(mem_ctx, &sid, sids,
 665                                                       num_sids)))
 666                 {
 667                         return False;
 668                 }
 669                 p = q;
 670         }
 671         return True;
 672 }
 673
 674 static bool parse_ridlist(TALLOC_CTX *mem_ctx, char *ridstr,
 675                           uint32 **rids, size_t *num_rids)
 676 {
 677         char *p;
 678
 679         p = ridstr;
 680         if (p == NULL)
 681                 return False;
 682
 683         while (p[0] != '\0') {
 684                 uint32 rid;
 685                 char *q;
 686                 rid = strtoul(p, &q, 10);
 687                 if (*q != '\n') {
 688                         DEBUG(0, ("Got invalid ridstr: %s\n", p));
 689                         return False;
 690                 }
 691                 p = q+1;
 692                 ADD_TO_ARRAY(mem_ctx, uint32, rid, rids, num_rids);
 693         }
 694         return True;
 695 }
 696
 697 enum winbindd_result winbindd_dual_lookuprids(struct winbindd_domain *domain,
 698                                               struct winbindd_cli_state *state)
 699 {
 700         uint32 *rids = NULL;
 701         size_t i, buflen, num_rids = 0;
 702         ssize_t len;
 703         DOM_SID domain_sid;
 704         char *domain_name;
 705         char **names;
 706         enum lsa_SidType *types;
 707         NTSTATUS status;
 708         char *result;
 709
 710         DEBUG(10, ("Looking up RIDs for domain %s (%s)\n",
 711                    state->request->domain_name,
 712                    state->request->data.sid));
 713
 714         if (!parse_ridlist(state->mem_ctx, state->request->extra_data.data,
 715                            &rids, &num_rids)) {
 716                 DEBUG(5, ("Could not parse ridlist\n"));
 717                 return WINBINDD_ERROR;
 718         }
 719
 720         if (!string_to_sid(&domain_sid, state->request->data.sid)) {
 721                 DEBUG(5, ("Could not parse domain sid %s\n",
 722                           state->request->data.sid));
 723                 return WINBINDD_ERROR;
 724         }
 725
 726         status = domain->methods->rids_to_names(domain, state->mem_ctx,
 727                                                 &domain_sid, rids, num_rids,
 728                                                 &domain_name,
 729                                                 &names, &types);
 730
 731         if (!NT_STATUS_IS_OK(status) &&
 732             !NT_STATUS_EQUAL(status, STATUS_SOME_UNMAPPED)) {
 733                 return WINBINDD_ERROR;
 734         }
 735
 736         len = 0;
 737         buflen = 0;
 738         result = NULL;
 739
 740         for (i=0; i<num_rids; i++) {
 741                 sprintf_append(state->mem_ctx, &result, &len, &buflen,
 742                                "%d %s\n", types[i], names[i]);
 743         }
 744
 745         fstrcpy(state->response->data.domain_name, domain_name);
 746
 747         if (result != NULL) {
 748                 state->response->extra_data.data = result;
 749                 state->response->length += len+1;
 750         }
 751
 752         return WINBINDD_OK;
 753 }
 754
 755 static void getsidaliases_recv(TALLOC_CTX *mem_ctx, bool success,
 756                                struct winbindd_response *response,
 757                                void *c, void *private_data)
 758 {
 759         void (*cont)(void *priv, bool succ,
 760                      DOM_SID *aliases, size_t num_aliases) =
 761                 (void (*)(void *, bool, DOM_SID *, size_t))c;
 762         char *aliases_str;
 763         DOM_SID *sids = NULL;
 764         size_t num_sids = 0;
 765
 766         if (!success) {
 767                 DEBUG(5, ("Could not trigger getsidaliases\n"));
 768                 cont(private_data, success, NULL, 0);
 769                 return;
 770         }
 771
 772         if (response->result != WINBINDD_OK) {
 773                 DEBUG(5, ("getsidaliases returned an error\n"));
 774                 cont(private_data, False, NULL, 0);
 775                 return;
 776         }
 777
 778         aliases_str = (char *)response->extra_data.data;
 779
 780         if (aliases_str == NULL) {
 781                 DEBUG(10, ("getsidaliases return 0 SIDs\n"));
 782                 cont(private_data, True, NULL, 0);
 783                 return;
 784         }
 785
 786         if (!parse_sidlist(mem_ctx, aliases_str, &sids, &num_sids)) {
 787                 DEBUG(0, ("Could not parse sids\n"));
 788                 cont(private_data, False, NULL, 0);
 789                 return;
 790         }
 791
 792         cont(private_data, True, sids, num_sids);
 793 }
 794
 795 void winbindd_getsidaliases_async(struct winbindd_domain *domain,
 796                                   TALLOC_CTX *mem_ctx,
 797                                   const DOM_SID *sids, size_t num_sids,
 798                                   void (*cont)(void *private_data,
 799                                                bool success,
 800                                                const DOM_SID *aliases,
 801                                                size_t num_aliases),
 802                                   void *private_data)
 803 {
 804         struct winbindd_request request;
 805         char *sidstr = NULL;
 806         ssize_t len;
 807
 808         if (num_sids == 0) {
 809                 cont(private_data, True, NULL, 0);
 810                 return;
 811         }
 812
 813         if (!print_sidlist(mem_ctx, sids, num_sids, &sidstr, &len)) {
 814                 cont(private_data, False, NULL, 0);
 815                 return;
 816         }
 817
 818         ZERO_STRUCT(request);
 819         request.cmd = WINBINDD_DUAL_GETSIDALIASES;
 820         request.extra_len = len;
 821         request.extra_data.data = sidstr;
 822
 823         do_async_domain(mem_ctx, domain, &request, getsidaliases_recv,
 824                         (void *)cont, private_data);
 825 }
 826
 827 static void query_user_recv(TALLOC_CTX *mem_ctx, bool success,
 828                             struct winbindd_response *response,
 829                             void *c, void *private_data)
 830 {
 831         void (*cont)(void *priv, bool succ, const char *acct_name,
 832                      const char *full_name, const char *homedir,
 833                      const char *shell, uint32 gid, uint32 group_rid) =
 834                 (void (*)(void *, bool, const char *, const char *,
 835                           const char *, const char *, uint32, uint32))c;
 836
 837         if (!success) {
 838                 DEBUG(5, ("Could not trigger query_user\n"));
 839                 cont(private_data, False, NULL, NULL, NULL, NULL, -1, -1);
 840                 return;
 841         }
 842
 843         if (response->result != WINBINDD_OK) {
 844                 DEBUG(5, ("query_user returned an error\n"));
 845                 cont(private_data, False, NULL, NULL, NULL, NULL, -1, -1);
 846                 return;
 847         }
 848
 849         cont(private_data, True, response->data.user_info.acct_name,
 850              response->data.user_info.full_name,
 851              response->data.user_info.homedir,
 852              response->data.user_info.shell,
 853              response->data.user_info.primary_gid,
 854              response->data.user_info.group_rid);
 855 }
 856
 857 void query_user_async(TALLOC_CTX *mem_ctx, struct winbindd_domain *domain,
 858                       const DOM_SID *sid,
 859                       void (*cont)(void *private_data, bool success,
 860                                    const char *acct_name,
 861                                    const char *full_name,
 862                                    const char *homedir,
 863                                    const char *shell,
 864                                    gid_t gid,
 865                                    uint32 group_rid),
 866                       void *private_data)
 867 {
 868         struct winbindd_request request;
 869         ZERO_STRUCT(request);
 870         request.cmd = WINBINDD_DUAL_USERINFO;
 871         sid_to_fstring(request.data.sid, sid);
 872         do_async_domain(mem_ctx, domain, &request, query_user_recv,
 873                         (void *)cont, private_data);
 874 }
 875
 876 enum winbindd_result winbindd_dual_ping(struct winbindd_domain *domain,
 877                                         struct winbindd_cli_state *state)
 878 {
 879         return WINBINDD_OK;
 880 }