source3/winbindd/winbindd_dual_ndr.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3
   4    Provide parent->child communication based on NDR marshalling
   5
   6    Copyright (C) Volker Lendecke 2009
   7
   8    This program is free software; you can redistribute it and/or modify
   9    it under the terms of the GNU General Public License as published by
  10    the Free Software Foundation; either version 3 of the License, or
  11    (at your option) any later version.
  12
  13    This program is distributed in the hope that it will be useful,
  14    but WITHOUT ANY WARRANTY; without even the implied warranty of
  15    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16    GNU General Public License for more details.
  17
  18    You should have received a copy of the GNU General Public License
  19    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  20 */
  21
  22 /*
  23  * This file implements an RPC between winbind parent and child processes,
  24  * leveraging the autogenerated marshalling routines for MSRPC. This is not
  25  * MSRPC, as it does not go through the whole DCERPC fragmentation, we just
  26  * leverage much the same infrastructure we already have for it.
  27  */
  28
  29 #include "includes.h"
  30 #include "winbindd/winbindd.h"
  31 #include "winbindd/winbindd_proto.h"
  32 #include "ntdomain.h"
  33 #include "librpc/rpc/dcesrv_core.h"
  34 #include "librpc/gen_ndr/ndr_winbind.h"
  35 #include "rpc_server/rpc_config.h"
  36 #include "rpc_server/rpc_server.h"
  37 #include "rpc_dce.h"
  38 #include "lib/tsocket/tsocket.h"
  39
  40 struct wbint_bh_state {
  41         struct winbindd_domain *domain;
  42         struct winbindd_child *child;
  43         const struct dcerpc_binding *binding;
  44 };
  45
  46 static const struct dcerpc_binding *wbint_bh_get_binding(struct dcerpc_binding_handle *h)
  47 {
  48         struct wbint_bh_state *hs = dcerpc_binding_handle_data(h,
  49                                      struct wbint_bh_state);
  50
  51         return hs->binding;
  52 }
  53
  54 static bool wbint_bh_is_connected(struct dcerpc_binding_handle *h)
  55 {
  56         struct wbint_bh_state *hs = dcerpc_binding_handle_data(h,
  57                                      struct wbint_bh_state);
  58
  59         if ((hs->domain == NULL) && (hs->child == NULL)) {
  60                 return false;
  61         }
  62
  63         return true;
  64 }
  65
  66 static uint32_t wbint_bh_set_timeout(struct dcerpc_binding_handle *h,
  67                                      uint32_t timeout)
  68 {
  69         /* TODO: implement timeouts */
  70         return UINT32_MAX;
  71 }
  72
  73 struct wbint_bh_raw_call_state {
  74         struct winbindd_domain *domain;
  75         uint32_t opnum;
  76         DATA_BLOB in_data;
  77         struct winbindd_request request;
  78         struct winbindd_response *response;
  79         DATA_BLOB out_data;
  80 };
  81
  82 static void wbint_bh_raw_call_child_done(struct tevent_req *subreq);
  83 static void wbint_bh_raw_call_domain_done(struct tevent_req *subreq);
  84
  85 static struct tevent_req *wbint_bh_raw_call_send(TALLOC_CTX *mem_ctx,
  86                                                   struct tevent_context *ev,
  87                                                   struct dcerpc_binding_handle *h,
  88                                                   const struct GUID *object,
  89                                                   uint32_t opnum,
  90                                                   uint32_t in_flags,
  91                                                   const uint8_t *in_data,
  92                                                   size_t in_length)
  93 {
  94         struct wbint_bh_state *hs =
  95                 dcerpc_binding_handle_data(h,
  96                 struct wbint_bh_state);
  97         struct tevent_req *req;
  98         struct wbint_bh_raw_call_state *state;
  99         bool ok;
 100         struct tevent_req *subreq;
 101
 102         req = tevent_req_create(mem_ctx, &state,
 103                                 struct wbint_bh_raw_call_state);
 104         if (req == NULL) {
 105                 return NULL;
 106         }
 107         state->domain = hs->domain;
 108         state->opnum = opnum;
 109         state->in_data.data = discard_const_p(uint8_t, in_data);
 110         state->in_data.length = in_length;
 111
 112         ok = wbint_bh_is_connected(h);
 113         if (!ok) {
 114                 tevent_req_nterror(req, NT_STATUS_CONNECTION_DISCONNECTED);
 115                 return tevent_req_post(req, ev);
 116         }
 117
 118         if ((state->domain != NULL)
 119             && wcache_fetch_ndr(state, state->domain, state->opnum,
 120                                 &state->in_data, &state->out_data)) {
 121                 DBG_DEBUG("Got opnum %"PRIu32" for domain %s from cache\n",
 122                           state->opnum, state->domain->name);
 123                 tevent_req_done(req);
 124                 return tevent_req_post(req, ev);
 125         }
 126
 127         state->request.cmd = WINBINDD_DUAL_NDRCMD;
 128         state->request.data.ndrcmd = state->opnum;
 129         state->request.extra_data.data = (char *)state->in_data.data;
 130         state->request.extra_len = state->in_data.length;
 131
 132         if (hs->child != NULL) {
 133                 subreq = wb_child_request_send(state, ev, hs->child,
 134                                                &state->request);
 135                 if (tevent_req_nomem(subreq, req)) {
 136                         return tevent_req_post(req, ev);
 137                 }
 138                 tevent_req_set_callback(
 139                         subreq, wbint_bh_raw_call_child_done, req);
 140                 return req;
 141         }
 142
 143         subreq = wb_domain_request_send(state, ev, hs->domain,
 144                                         &state->request);
 145         if (tevent_req_nomem(subreq, req)) {
 146                 return tevent_req_post(req, ev);
 147         }
 148         tevent_req_set_callback(subreq, wbint_bh_raw_call_domain_done, req);
 149
 150         return req;
 151 }
 152
 153 static void wbint_bh_raw_call_child_done(struct tevent_req *subreq)
 154 {
 155         struct tevent_req *req =
 156                 tevent_req_callback_data(subreq,
 157                 struct tevent_req);
 158         struct wbint_bh_raw_call_state *state =
 159                 tevent_req_data(req,
 160                 struct wbint_bh_raw_call_state);
 161         int ret, err;
 162
 163         ret = wb_child_request_recv(subreq, state, &state->response, &err);
 164         TALLOC_FREE(subreq);
 165         if (ret == -1) {
 166                 NTSTATUS status = map_nt_error_from_unix(err);
 167                 tevent_req_nterror(req, status);
 168                 return;
 169         }
 170
 171         state->out_data = data_blob_talloc(state,
 172                 state->response->extra_data.data,
 173                 state->response->length - sizeof(struct winbindd_response));
 174         if (state->response->extra_data.data && !state->out_data.data) {
 175                 tevent_req_oom(req);
 176                 return;
 177         }
 178
 179         if (state->domain != NULL) {
 180                 wcache_store_ndr(state->domain, state->opnum,
 181                                  &state->in_data, &state->out_data);
 182         }
 183
 184         tevent_req_done(req);
 185 }
 186
 187 static void wbint_bh_raw_call_domain_done(struct tevent_req *subreq)
 188 {
 189         struct tevent_req *req =
 190                 tevent_req_callback_data(subreq,
 191                 struct tevent_req);
 192         struct wbint_bh_raw_call_state *state =
 193                 tevent_req_data(req,
 194                 struct wbint_bh_raw_call_state);
 195         int ret, err;
 196
 197         ret = wb_domain_request_recv(subreq, state, &state->response, &err);
 198         TALLOC_FREE(subreq);
 199         if (ret == -1) {
 200                 NTSTATUS status = map_nt_error_from_unix(err);
 201                 tevent_req_nterror(req, status);
 202                 return;
 203         }
 204
 205         state->out_data = data_blob_talloc(state,
 206                 state->response->extra_data.data,
 207                 state->response->length - sizeof(struct winbindd_response));
 208         if (state->response->extra_data.data && !state->out_data.data) {
 209                 tevent_req_oom(req);
 210                 return;
 211         }
 212
 213         if (state->domain != NULL) {
 214                 wcache_store_ndr(state->domain, state->opnum,
 215                                  &state->in_data, &state->out_data);
 216         }
 217
 218         tevent_req_done(req);
 219 }
 220
 221 static NTSTATUS wbint_bh_raw_call_recv(struct tevent_req *req,
 222                                         TALLOC_CTX *mem_ctx,
 223                                         uint8_t **out_data,
 224                                         size_t *out_length,
 225                                         uint32_t *out_flags)
 226 {
 227         struct wbint_bh_raw_call_state *state =
 228                 tevent_req_data(req,
 229                 struct wbint_bh_raw_call_state);
 230         NTSTATUS status;
 231
 232         if (tevent_req_is_nterror(req, &status)) {
 233                 tevent_req_received(req);
 234                 return status;
 235         }
 236
 237         *out_data = talloc_move(mem_ctx, &state->out_data.data);
 238         *out_length = state->out_data.length;
 239         *out_flags = 0;
 240         tevent_req_received(req);
 241         return NT_STATUS_OK;
 242 }
 243
 244 struct wbint_bh_disconnect_state {
 245         uint8_t _dummy;
 246 };
 247
 248 static struct tevent_req *wbint_bh_disconnect_send(TALLOC_CTX *mem_ctx,
 249                                                 struct tevent_context *ev,
 250                                                 struct dcerpc_binding_handle *h)
 251 {
 252         struct wbint_bh_state *hs = dcerpc_binding_handle_data(h,
 253                                      struct wbint_bh_state);
 254         struct tevent_req *req;
 255         struct wbint_bh_disconnect_state *state;
 256         bool ok;
 257
 258         req = tevent_req_create(mem_ctx, &state,
 259                                 struct wbint_bh_disconnect_state);
 260         if (req == NULL) {
 261                 return NULL;
 262         }
 263
 264         ok = wbint_bh_is_connected(h);
 265         if (!ok) {
 266                 tevent_req_nterror(req, NT_STATUS_CONNECTION_DISCONNECTED);
 267                 return tevent_req_post(req, ev);
 268         }
 269
 270         /*
 271          * TODO: do a real async disconnect ...
 272          */
 273         hs->domain = NULL;
 274         hs->child = NULL;
 275
 276         tevent_req_done(req);
 277         return tevent_req_post(req, ev);
 278 }
 279
 280 static NTSTATUS wbint_bh_disconnect_recv(struct tevent_req *req)
 281 {
 282         NTSTATUS status;
 283
 284         if (tevent_req_is_nterror(req, &status)) {
 285                 tevent_req_received(req);
 286                 return status;
 287         }
 288
 289         tevent_req_received(req);
 290         return NT_STATUS_OK;
 291 }
 292
 293 static bool wbint_bh_ref_alloc(struct dcerpc_binding_handle *h)
 294 {
 295         return true;
 296 }
 297
 298 static void wbint_bh_do_ndr_print(struct dcerpc_binding_handle *h,
 299                                   ndr_flags_type ndr_flags,
 300                                   const void *_struct_ptr,
 301                                   const struct ndr_interface_call *call)
 302 {
 303         void *struct_ptr = discard_const(_struct_ptr);
 304
 305         if (DEBUGLEVEL < 10) {
 306                 return;
 307         }
 308
 309         if (ndr_flags & NDR_IN) {
 310                 ndr_print_function_debug(call->ndr_print,
 311                                          call->name,
 312                                          ndr_flags,
 313                                          struct_ptr);
 314         }
 315         if (ndr_flags & NDR_OUT) {
 316                 ndr_print_function_debug(call->ndr_print,
 317                                          call->name,
 318                                          ndr_flags,
 319                                          struct_ptr);
 320         }
 321 }
 322
 323 static const struct dcerpc_binding_handle_ops wbint_bh_ops = {
 324         .name                   = "wbint",
 325         .get_binding            = wbint_bh_get_binding,
 326         .is_connected           = wbint_bh_is_connected,
 327         .set_timeout            = wbint_bh_set_timeout,
 328         .raw_call_send          = wbint_bh_raw_call_send,
 329         .raw_call_recv          = wbint_bh_raw_call_recv,
 330         .disconnect_send        = wbint_bh_disconnect_send,
 331         .disconnect_recv        = wbint_bh_disconnect_recv,
 332
 333         .ref_alloc              = wbint_bh_ref_alloc,
 334         .do_ndr_print           = wbint_bh_do_ndr_print,
 335 };
 336
 337 static NTSTATUS make_internal_ncacn_conn(TALLOC_CTX *mem_ctx,
 338                                 const struct ndr_interface_table *table,
 339                                 struct dcerpc_ncacn_conn **_out)
 340 {
 341         struct dcerpc_ncacn_conn *ncacn_conn = NULL;
 342
 343         ncacn_conn = talloc_zero(mem_ctx, struct dcerpc_ncacn_conn);
 344         if (ncacn_conn == NULL) {
 345                 return NT_STATUS_NO_MEMORY;
 346         }
 347
 348         ncacn_conn->p.mem_ctx = mem_ctx;
 349
 350         *_out = ncacn_conn;
 351
 352         return NT_STATUS_OK;
 353 }
 354
 355 static NTSTATUS find_ncalrpc_default_endpoint(struct dcesrv_context *dce_ctx,
 356                                               struct dcesrv_endpoint **ep)
 357 {
 358         TALLOC_CTX *tmp_ctx = NULL;
 359         struct dcerpc_binding *binding = NULL;
 360         NTSTATUS status;
 361
 362         tmp_ctx = talloc_new(dce_ctx);
 363         if (tmp_ctx == NULL) {
 364                 return NT_STATUS_NO_MEMORY;
 365         }
 366
 367         /*
 368          * Some services use a rpcint binding handle in their initialization,
 369          * before the server is fully initialized. Search the NCALRPC endpoint
 370          * with and without endpoint
 371          */
 372         status = dcerpc_parse_binding(tmp_ctx, "ncalrpc:", &binding);
 373         if (!NT_STATUS_IS_OK(status)) {
 374                 goto out;
 375         }
 376
 377         status = dcesrv_find_endpoint(dce_ctx, binding, ep);
 378         if (NT_STATUS_IS_OK(status)) {
 379                 goto out;
 380         }
 381
 382         status = dcerpc_parse_binding(tmp_ctx, "ncalrpc:[WINBIND]", &binding);
 383         if (!NT_STATUS_IS_OK(status)) {
 384                 goto out;
 385         }
 386
 387         status = dcesrv_find_endpoint(dce_ctx, binding, ep);
 388         if (NT_STATUS_IS_OK(status)) {
 389                 goto out;
 390         }
 391
 392         status = dcerpc_parse_binding(tmp_ctx, "ncalrpc:[DEFAULT]", &binding);
 393         if (!NT_STATUS_IS_OK(status)) {
 394                 goto out;
 395         }
 396
 397         status = dcesrv_find_endpoint(dce_ctx, binding, ep);
 398         if (!NT_STATUS_IS_OK(status)) {
 399                 goto out;
 400         }
 401
 402 out:
 403         talloc_free(tmp_ctx);
 404         return status;
 405 }
 406
 407 static NTSTATUS make_internal_dcesrv_connection(TALLOC_CTX *mem_ctx,
 408                                 const struct ndr_interface_table *ndr_table,
 409                                 struct dcerpc_ncacn_conn *ncacn_conn,
 410                                 struct dcesrv_connection **_out)
 411 {
 412         struct dcesrv_connection *conn = NULL;
 413         struct dcesrv_connection_context *context = NULL;
 414         struct dcesrv_endpoint *endpoint = NULL;
 415         NTSTATUS status;
 416
 417         conn = talloc_zero(mem_ctx, struct dcesrv_connection);
 418         if (conn == NULL) {
 419                 return NT_STATUS_NO_MEMORY;
 420         }
 421         conn->dce_ctx = global_dcesrv_context();
 422         conn->preferred_transfer = &ndr_transfer_syntax_ndr;
 423         conn->transport.private_data = ncacn_conn;
 424
 425         status = find_ncalrpc_default_endpoint(conn->dce_ctx, &endpoint);
 426         if (!NT_STATUS_IS_OK(status)) {
 427                 goto fail;
 428         }
 429         conn->endpoint = endpoint;
 430
 431         conn->default_auth_state = talloc_zero(conn, struct dcesrv_auth);
 432         if (conn->default_auth_state == NULL) {
 433                 status = NT_STATUS_NO_MEMORY;
 434                 goto fail;
 435         }
 436         conn->default_auth_state->auth_finished = true;
 437
 438         context = talloc_zero(conn, struct dcesrv_connection_context);
 439         if (context == NULL) {
 440                 status = NT_STATUS_NO_MEMORY;
 441                 goto fail;
 442         }
 443         context->conn = conn;
 444         context->context_id = 0;
 445         context->transfer_syntax = *(conn->preferred_transfer);
 446         context->iface = find_interface_by_syntax_id(
 447                 conn->endpoint, &ndr_table->syntax_id);
 448         if (context->iface == NULL) {
 449                 status = NT_STATUS_RPC_INTERFACE_NOT_FOUND;
 450                 goto fail;
 451         }
 452
 453         DLIST_ADD(conn->contexts, context);
 454
 455         *_out = conn;
 456
 457         return NT_STATUS_OK;
 458 fail:
 459         talloc_free(conn);
 460         return status;
 461 }
 462
 463 static NTSTATUS set_remote_addresses(struct dcesrv_connection *conn,
 464                                      int sock)
 465 {
 466         struct sockaddr_storage st = { 0 };
 467         struct sockaddr *sar = (struct sockaddr *)&st;
 468         struct tsocket_address *remote = NULL;
 469         struct tsocket_address *local = NULL;
 470         socklen_t sa_len = sizeof(st);
 471         NTSTATUS status;
 472         int ret;
 473
 474         ZERO_STRUCT(st);
 475         ret = getpeername(sock, sar, &sa_len);
 476         if (ret != 0) {
 477                 status = map_nt_error_from_unix(ret);
 478                 DBG_ERR("getpeername failed: %s\n", nt_errstr(status));
 479                 return status;
 480         }
 481
 482         ret = tsocket_address_bsd_from_sockaddr(conn, sar, sa_len, &remote);
 483         if (ret != 0) {
 484                 status = map_nt_error_from_unix(ret);
 485                 DBG_ERR("tsocket_address_bsd_from_sockaddr failed: %s\n",
 486                         nt_errstr(status));
 487                 return status;
 488         }
 489
 490         ZERO_STRUCT(st);
 491         ret = getsockname(sock, sar, &sa_len);
 492         if (ret != 0) {
 493                 status = map_nt_error_from_unix(ret);
 494                 DBG_ERR("getsockname failed: %s\n", nt_errstr(status));
 495                 return status;
 496         }
 497
 498         ret = tsocket_address_bsd_from_sockaddr(conn, sar, sa_len, &local);
 499         if (ret != 0) {
 500                 status = map_nt_error_from_unix(ret);
 501                 DBG_ERR("tsocket_address_bsd_from_sockaddr failed: %s\n",
 502                         nt_errstr(status));
 503                 return status;
 504         }
 505
 506         conn->local_address = talloc_move(conn, &local);
 507         conn->remote_address = talloc_move(conn, &remote);
 508
 509         return NT_STATUS_OK;
 510 }
 511
 512 /* initialise a wbint binding handle */
 513 struct dcerpc_binding_handle *wbint_binding_handle(TALLOC_CTX *mem_ctx,
 514                                                 struct winbindd_domain *domain,
 515                                                 struct winbindd_child *child)
 516 {
 517         struct dcerpc_binding_handle *h = NULL;
 518         struct wbint_bh_state *hs = NULL;
 519         struct dcerpc_binding *b = NULL;
 520         NTSTATUS status;
 521
 522         h = dcerpc_binding_handle_create(mem_ctx,
 523                                          &wbint_bh_ops,
 524                                          NULL,
 525                                          &ndr_table_winbind,
 526                                          &hs,
 527                                          struct wbint_bh_state,
 528                                          __location__);
 529         if (h == NULL) {
 530                 return NULL;
 531         }
 532         hs->domain = domain;
 533         hs->child = child;
 534
 535         status = dcerpc_parse_binding(hs, "", &b);
 536         if (!NT_STATUS_IS_OK(status)) {
 537                 TALLOC_FREE(h);
 538                 return NULL;
 539         }
 540         status = dcerpc_binding_set_transport(b, NCACN_INTERNAL);
 541         if (!NT_STATUS_IS_OK(status)) {
 542                 TALLOC_FREE(h);
 543                 return NULL;
 544         }
 545         status = dcerpc_binding_set_string_option(b, "host", "localhost");
 546         if (!NT_STATUS_IS_OK(status)) {
 547                 TALLOC_FREE(h);
 548                 return NULL;
 549         }
 550         status = dcerpc_binding_set_string_option(b,
 551                                                   "endpoint",
 552                                                   "winbindd_dual_ndrcmd");
 553         if (!NT_STATUS_IS_OK(status)) {
 554                 TALLOC_FREE(h);
 555                 return NULL;
 556         }
 557         status = dcerpc_binding_set_abstract_syntax(b,
 558                                                 &ndr_table_winbind.syntax_id);
 559         if (!NT_STATUS_IS_OK(status)) {
 560                 TALLOC_FREE(h);
 561                 return NULL;
 562         }
 563
 564         hs->binding = b;
 565
 566         return h;
 567 }
 568
 569 enum winbindd_result winbindd_dual_ndrcmd(struct winbindd_domain *domain,
 570                                           struct winbindd_cli_state *state)
 571 {
 572         struct dcerpc_ncacn_conn *ncacn_conn = NULL;
 573         struct dcesrv_connection *dcesrv_conn = NULL;
 574         struct dcesrv_call_state *dcesrv_call = NULL;
 575         struct data_blob_list_item *rep = NULL;
 576         struct dcesrv_context_callbacks *cb = NULL;
 577         uint32_t opnum = state->request->data.ndrcmd;
 578         TALLOC_CTX *mem_ctx;
 579         NTSTATUS status;
 580
 581         DBG_DEBUG("Running command %s (domain '%s')\n",
 582                   ndr_table_winbind.calls[opnum].name,
 583                   domain ? domain->name : "(null)");
 584
 585         mem_ctx = talloc_stackframe();
 586         if (mem_ctx == NULL) {
 587                 DBG_ERR("No memory\n");
 588                 return WINBINDD_ERROR;
 589         }
 590
 591         status = make_internal_ncacn_conn(mem_ctx,
 592                                           &ndr_table_winbind,
 593                                           &ncacn_conn);
 594         if (!NT_STATUS_IS_OK(status)) {
 595                 goto out;
 596         }
 597
 598         status = make_internal_dcesrv_connection(ncacn_conn,
 599                                                  &ndr_table_winbind,
 600                                                  ncacn_conn,
 601                                                  &dcesrv_conn);
 602         if (!NT_STATUS_IS_OK(status)) {
 603                 goto out;
 604         }
 605
 606         status = set_remote_addresses(dcesrv_conn, state->sock);
 607         if (!NT_STATUS_IS_OK(status)) {
 608                 goto out;
 609         }
 610
 611         dcesrv_call = talloc_zero(dcesrv_conn, struct dcesrv_call_state);
 612         if (dcesrv_call == NULL) {
 613                 status = NT_STATUS_NO_MEMORY;
 614                 goto out;
 615         }
 616
 617         dcesrv_call->conn = dcesrv_conn;
 618         dcesrv_call->context = dcesrv_conn->contexts;
 619         dcesrv_call->auth_state = dcesrv_conn->default_auth_state;
 620
 621         ZERO_STRUCT(dcesrv_call->pkt);
 622         dcesrv_call->pkt.u.bind.assoc_group_id = 0;
 623
 624         cb = dcesrv_call->conn->dce_ctx->callbacks;
 625         status = cb->assoc_group.find(
 626                 dcesrv_call, cb->assoc_group.private_data);
 627         if (!NT_STATUS_IS_OK(status)) {
 628                 goto out;
 629         }
 630
 631         ZERO_STRUCT(dcesrv_call->pkt);
 632         dcesrv_call->pkt.u.request.opnum = opnum;
 633         dcesrv_call->pkt.u.request.context_id = 0;
 634         dcesrv_call->pkt.u.request.stub_and_verifier =
 635                 data_blob_const(state->request->extra_data.data,
 636                                 state->request->extra_len);
 637
 638         status = dcesrv_call_dispatch_local(dcesrv_call);
 639         if (!NT_STATUS_IS_OK(status)) {
 640                 goto out;
 641         }
 642
 643         rep = dcesrv_call->replies;
 644         DLIST_REMOVE(dcesrv_call->replies, rep);
 645
 646         state->response->extra_data.data = talloc_steal(state->mem_ctx,
 647                                                         rep->blob.data);
 648         state->response->length += rep->blob.length;
 649
 650         talloc_free(rep);
 651
 652 out:
 653         talloc_free(mem_ctx);
 654         if (NT_STATUS_IS_OK(status)) {
 655                 return WINBINDD_OK;
 656         }
 657         return WINBINDD_ERROR;
 658 }