source4/libcli/smb_composite/sesssetup.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3
   4    Copyright (C) Andrew Tridgell 2005
   5
   6    This program is free software; you can redistribute it and/or modify
   7    it under the terms of the GNU General Public License as published by
   8    the Free Software Foundation; either version 3 of the License, or
   9    (at your option) any later version.
  10
  11    This program is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14    GNU General Public License for more details.
  15
  16    You should have received a copy of the GNU General Public License
  17    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  18 */
  19 /*
  20   a composite API for making handling a generic async session setup
  21 */
  22
  23 #include "includes.h"
  24 #include "libcli/raw/libcliraw.h"
  25 #include "libcli/raw/raw_proto.h"
  26 #include "libcli/composite/composite.h"
  27 #include "libcli/smb_composite/smb_composite.h"
  28 #include "libcli/smb_composite/proto.h"
  29 #include "libcli/auth/libcli_auth.h"
  30 #include "auth/auth.h"
  31 #include "auth/gensec/gensec.h"
  32 #include "auth/credentials/credentials.h"
  33 #include "version.h"
  34 #include "param/param.h"
  35
  36 struct sesssetup_state {
  37         union smb_sesssetup setup;
  38         NTSTATUS remote_status;
  39         NTSTATUS gensec_status;
  40         struct smb_composite_sesssetup *io;
  41         struct smbcli_request *req;
  42 };
  43
  44 static int sesssetup_state_destructor(struct sesssetup_state *state)
  45 {
  46         if (state->req) {
  47                 talloc_free(state->req);
  48                 state->req = NULL;
  49         }
  50
  51         return 0;
  52 }
  53
  54 static NTSTATUS session_setup_old(struct composite_context *c,
  55                                   struct smbcli_session *session,
  56                                   struct smb_composite_sesssetup *io,
  57                                   struct smbcli_request **req);
  58 static NTSTATUS session_setup_nt1(struct composite_context *c,
  59                                   struct smbcli_session *session,
  60                                   struct smb_composite_sesssetup *io,
  61                                   struct smbcli_request **req);
  62 static NTSTATUS session_setup_spnego(struct composite_context *c,
  63                                      struct smbcli_session *session,
  64                                      struct smb_composite_sesssetup *io,
  65                                      struct smbcli_request **req);
  66
  67 /*
  68   store the user session key for a transport
  69 */
  70 static void set_user_session_key(struct smbcli_session *session,
  71                                  const DATA_BLOB *session_key)
  72 {
  73         session->user_session_key = data_blob_talloc(session,
  74                                                      session_key->data,
  75                                                      session_key->length);
  76 }
  77
  78 /*
  79   handler for completion of a smbcli_request sub-request
  80 */
  81 static void request_handler(struct smbcli_request *req)
  82 {
  83         struct composite_context *c = (struct composite_context *)req->async.private_data;
  84         struct sesssetup_state *state = talloc_get_type(c->private_data, struct sesssetup_state);
  85         struct smbcli_session *session = req->session;
  86         DATA_BLOB session_key = data_blob(NULL, 0);
  87         DATA_BLOB null_data_blob = data_blob(NULL, 0);
  88         NTSTATUS session_key_err, nt_status;
  89         struct smbcli_request *check_req = NULL;
  90         const char *os = NULL;
  91         const char *lanman = NULL;
  92
  93         if (req->sign_caller_checks) {
  94                 req->do_not_free = true;
  95                 check_req = req;
  96         }
  97
  98         state->remote_status = smb_raw_sesssetup_recv(req, state, &state->setup);
  99         c->status = state->remote_status;
 100         state->req = NULL;
 101
 102         /*
 103          * we only need to check the signature if the
 104          * NT_STATUS_OK is returned
 105          */
 106         if (!NT_STATUS_IS_OK(state->remote_status)) {
 107                 talloc_free(check_req);
 108                 check_req = NULL;
 109         }
 110
 111         switch (state->setup.old.level) {
 112         case RAW_SESSSETUP_OLD:
 113                 state->io->out.vuid = state->setup.old.out.vuid;
 114                 /* This doesn't work, as this only happens on old
 115                  * protocols, where this comparison won't match. */
 116                 if (NT_STATUS_EQUAL(c->status, NT_STATUS_LOGON_FAILURE)) {
 117                         /* we neet to reset the vuid for a new try */
 118                         session->vuid = 0;
 119                         if (cli_credentials_wrong_password(state->io->in.credentials)) {
 120                                 nt_status = session_setup_old(c, session,
 121                                                               state->io,
 122                                                               &state->req);
 123                                 if (NT_STATUS_IS_OK(nt_status)) {
 124                                         talloc_free(check_req);
 125                                         c->status = nt_status;
 126                                         composite_continue_smb(c, state->req, request_handler, c);
 127                                         return;
 128                                 }
 129                         }
 130                 }
 131                 os = state->setup.old.out.os;
 132                 lanman = state->setup.old.out.lanman;
 133                 break;
 134
 135         case RAW_SESSSETUP_NT1:
 136                 state->io->out.vuid = state->setup.nt1.out.vuid;
 137                 if (NT_STATUS_EQUAL(c->status, NT_STATUS_LOGON_FAILURE)) {
 138                         /* we neet to reset the vuid for a new try */
 139                         session->vuid = 0;
 140                         if (cli_credentials_wrong_password(state->io->in.credentials)) {
 141                                 nt_status = session_setup_nt1(c, session,
 142                                                               state->io,
 143                                                               &state->req);
 144                                 if (NT_STATUS_IS_OK(nt_status)) {
 145                                         talloc_free(check_req);
 146                                         c->status = nt_status;
 147                                         composite_continue_smb(c, state->req, request_handler, c);
 148                                         return;
 149                                 }
 150                         }
 151                 }
 152                 os = state->setup.nt1.out.os;
 153                 lanman = state->setup.nt1.out.lanman;
 154                 break;
 155
 156         case RAW_SESSSETUP_SPNEGO:
 157                 state->io->out.vuid = state->setup.spnego.out.vuid;
 158                 if (NT_STATUS_EQUAL(c->status, NT_STATUS_LOGON_FAILURE)) {
 159                         /* we need to reset the vuid for a new try */
 160                         session->vuid = 0;
 161                         if (cli_credentials_wrong_password(state->io->in.credentials)) {
 162                                 nt_status = session_setup_spnego(c, session,
 163                                                                       state->io,
 164                                                                       &state->req);
 165                                 if (NT_STATUS_IS_OK(nt_status)) {
 166                                         talloc_free(check_req);
 167                                         c->status = nt_status;
 168                                         composite_continue_smb(c, state->req, request_handler, c);
 169                                         return;
 170                                 }
 171                         }
 172                 }
 173                 if (!NT_STATUS_EQUAL(c->status, NT_STATUS_MORE_PROCESSING_REQUIRED) &&
 174                     !NT_STATUS_IS_OK(c->status)) {
 175                         break;
 176                 }
 177                 if (NT_STATUS_EQUAL(state->gensec_status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
 178
 179                         /* The status value here, from the earlier pass at GENSEC is
 180                          * vital to the security of the system.  Even if the other end
 181                          * accepts, if GENSEC claims 'MORE_PROCESSING_REQUIRED' then
 182                          * you must keep feeding it blobs, or else the remote
 183                          * host/attacker might avoid mutal authentication
 184                          * requirements */
 185
 186                         state->gensec_status = gensec_update(session->gensec, state,
 187                                                          state->setup.spnego.out.secblob,
 188                                                          &state->setup.spnego.in.secblob);
 189                         c->status = state->gensec_status;
 190                         if (!NT_STATUS_EQUAL(c->status, NT_STATUS_MORE_PROCESSING_REQUIRED) &&
 191                             !NT_STATUS_IS_OK(c->status)) {
 192                                 break;
 193                         }
 194                 } else {
 195                         state->setup.spnego.in.secblob = data_blob(NULL, 0);
 196                 }
 197
 198                 if (NT_STATUS_IS_OK(state->remote_status)) {
 199                         if (state->setup.spnego.in.secblob.length) {
 200                                 c->status = NT_STATUS_INTERNAL_ERROR;
 201                                 break;
 202                         }
 203                         session_key_err = gensec_session_key(session->gensec, &session_key);
 204                         if (NT_STATUS_IS_OK(session_key_err)) {
 205                                 set_user_session_key(session, &session_key);
 206                                 smbcli_transport_simple_set_signing(session->transport, session_key, null_data_blob);
 207                         }
 208                 }
 209
 210                 if (state->setup.spnego.in.secblob.length) {
 211                         /*
 212                          * set the session->vuid value only for calling
 213                          * smb_raw_sesssetup_send()
 214                          */
 215                         uint16_t vuid = session->vuid;
 216                         session->vuid = state->io->out.vuid;
 217                         state->req = smb_raw_sesssetup_send(session, &state->setup);
 218                         session->vuid = vuid;
 219                         if (state->req) {
 220                                 state->req->sign_caller_checks = true;
 221                         }
 222                         composite_continue_smb(c, state->req, request_handler, c);
 223                         return;
 224                 }
 225                 os = state->setup.spnego.out.os;
 226                 lanman = state->setup.spnego.out.lanman;
 227                 break;
 228
 229         case RAW_SESSSETUP_SMB2:
 230                 c->status = NT_STATUS_INTERNAL_ERROR;
 231                 break;
 232         }
 233
 234         if (check_req) {
 235                 check_req->sign_caller_checks = false;
 236                 if (!smbcli_request_check_sign_mac(check_req)) {
 237                         c->status = NT_STATUS_ACCESS_DENIED;
 238                 }
 239                 talloc_free(check_req);
 240                 check_req = NULL;
 241         }
 242
 243         /* enforce the local signing required flag */
 244         if (NT_STATUS_IS_OK(c->status) && !cli_credentials_is_anonymous(state->io->in.credentials)) {
 245                 if (!session->transport->negotiate.sign_info.doing_signing
 246                     && session->transport->negotiate.sign_info.mandatory_signing) {
 247                         DEBUG(0, ("SMB signing required, but server does not support it\n"));
 248                         c->status = NT_STATUS_ACCESS_DENIED;
 249                 }
 250         }
 251
 252         if (!NT_STATUS_IS_OK(c->status)) {
 253                 composite_error(c, c->status);
 254                 return;
 255         }
 256
 257         if (os) {
 258                 session->os = talloc_strdup(session, os);
 259                 if (composite_nomem(session->os, c)) return;
 260         } else {
 261                 session->os = NULL;
 262         }
 263         if (lanman) {
 264                 session->lanman = talloc_strdup(session, lanman);
 265                 if (composite_nomem(session->lanman, c)) return;
 266         } else {
 267                 session->lanman = NULL;
 268         }
 269
 270         composite_done(c);
 271 }
 272
 273
 274 /*
 275   send a nt1 style session setup
 276 */
 277 static NTSTATUS session_setup_nt1(struct composite_context *c,
 278                                   struct smbcli_session *session,
 279                                   struct smb_composite_sesssetup *io,
 280                                   struct smbcli_request **req)
 281 {
 282         NTSTATUS nt_status = NT_STATUS_INTERNAL_ERROR;
 283         struct sesssetup_state *state = talloc_get_type(c->private_data, struct sesssetup_state);
 284         DATA_BLOB names_blob = NTLMv2_generate_names_blob(state, session->transport->socket->hostname, cli_credentials_get_domain(io->in.credentials));
 285         DATA_BLOB session_key = data_blob(NULL, 0);
 286         int flags = CLI_CRED_NTLM_AUTH;
 287
 288         smbcli_temp_set_signing(session->transport);
 289
 290         if (session->options.lanman_auth) {
 291                 flags |= CLI_CRED_LANMAN_AUTH;
 292         }
 293
 294         if (session->options.ntlmv2_auth) {
 295                 flags |= CLI_CRED_NTLMv2_AUTH;
 296         }
 297
 298         state->setup.nt1.level           = RAW_SESSSETUP_NT1;
 299         state->setup.nt1.in.bufsize      = session->transport->options.max_xmit;
 300         state->setup.nt1.in.mpx_max      = session->transport->options.max_mux;
 301         state->setup.nt1.in.vc_num       = 1;
 302         state->setup.nt1.in.sesskey      = io->in.sesskey;
 303         state->setup.nt1.in.capabilities = io->in.capabilities;
 304         state->setup.nt1.in.os           = "Unix";
 305         state->setup.nt1.in.lanman       = talloc_asprintf(state, "Samba %s", SAMBA_VERSION_STRING);
 306
 307         cli_credentials_get_ntlm_username_domain(io->in.credentials, state,
 308                                                  &state->setup.nt1.in.user,
 309                                                  &state->setup.nt1.in.domain);
 310
 311
 312         if (session->transport->negotiate.sec_mode & NEGOTIATE_SECURITY_CHALLENGE_RESPONSE) {
 313                 nt_status = cli_credentials_get_ntlm_response(io->in.credentials, state,
 314                                                               &flags,
 315                                                               session->transport->negotiate.secblob,
 316                                                               names_blob,
 317                                                               &state->setup.nt1.in.password1,
 318                                                               &state->setup.nt1.in.password2,
 319                                                               NULL, &session_key);
 320                 NT_STATUS_NOT_OK_RETURN(nt_status);
 321         } else if (session->options.plaintext_auth) {
 322                 const char *password = cli_credentials_get_password(io->in.credentials);
 323                 state->setup.nt1.in.password1 = data_blob_talloc(state, password, strlen(password));
 324                 state->setup.nt1.in.password2 = data_blob(NULL, 0);
 325         } else {
 326                 /* could match windows client and return 'cannot logon from this workstation', but it just confuses everybody */
 327                 return NT_STATUS_INVALID_PARAMETER;
 328         }
 329
 330         *req = smb_raw_sesssetup_send(session, &state->setup);
 331         if (!*req) {
 332                 return NT_STATUS_NO_MEMORY;
 333         }
 334
 335         if (NT_STATUS_IS_OK(nt_status)) {
 336                 smbcli_transport_simple_set_signing(session->transport, session_key,
 337                                                     state->setup.nt1.in.password2);
 338                 set_user_session_key(session, &session_key);
 339
 340                 data_blob_free(&session_key);
 341         }
 342
 343         return (*req)->status;
 344 }
 345
 346
 347 /*
 348   old style session setup (pre NT1 protocol level)
 349 */
 350 static NTSTATUS session_setup_old(struct composite_context *c,
 351                                   struct smbcli_session *session,
 352                                   struct smb_composite_sesssetup *io,
 353                                   struct smbcli_request **req)
 354 {
 355         NTSTATUS nt_status;
 356         struct sesssetup_state *state = talloc_get_type(c->private_data, struct sesssetup_state);
 357         const char *password = cli_credentials_get_password(io->in.credentials);
 358         DATA_BLOB names_blob = NTLMv2_generate_names_blob(state, session->transport->socket->hostname, cli_credentials_get_domain(io->in.credentials));
 359         DATA_BLOB session_key;
 360         int flags = 0;
 361         if (session->options.lanman_auth) {
 362                 flags |= CLI_CRED_LANMAN_AUTH;
 363         }
 364
 365         if (session->options.ntlmv2_auth) {
 366                 flags |= CLI_CRED_NTLMv2_AUTH;
 367         }
 368
 369         state->setup.old.level      = RAW_SESSSETUP_OLD;
 370         state->setup.old.in.bufsize = session->transport->options.max_xmit;
 371         state->setup.old.in.mpx_max = session->transport->options.max_mux;
 372         state->setup.old.in.vc_num  = 1;
 373         state->setup.old.in.sesskey = io->in.sesskey;
 374         state->setup.old.in.os      = "Unix";
 375         state->setup.old.in.lanman  = talloc_asprintf(state, "Samba %s", SAMBA_VERSION_STRING);
 376         cli_credentials_get_ntlm_username_domain(io->in.credentials, state,
 377                                                  &state->setup.old.in.user,
 378                                                  &state->setup.old.in.domain);
 379
 380         if (session->transport->negotiate.sec_mode & NEGOTIATE_SECURITY_CHALLENGE_RESPONSE) {
 381                 nt_status = cli_credentials_get_ntlm_response(io->in.credentials, state,
 382                                                               &flags,
 383                                                               session->transport->negotiate.secblob,
 384                                                               names_blob,
 385                                                               &state->setup.old.in.password,
 386                                                               NULL,
 387                                                               NULL, &session_key);
 388                 NT_STATUS_NOT_OK_RETURN(nt_status);
 389                 set_user_session_key(session, &session_key);
 390
 391                 data_blob_free(&session_key);
 392         } else if (session->options.plaintext_auth) {
 393                 state->setup.old.in.password = data_blob_talloc(state, password, strlen(password));
 394         } else {
 395                 /* could match windows client and return 'cannot logon from this workstation', but it just confuses everybody */
 396                 return NT_STATUS_INVALID_PARAMETER;
 397         }
 398
 399         *req = smb_raw_sesssetup_send(session, &state->setup);
 400         if (!*req) {
 401                 return NT_STATUS_NO_MEMORY;
 402         }
 403         return (*req)->status;
 404 }
 405
 406
 407 /*
 408   Modern, all singing, all dancing extended security (and possibly SPNEGO) request
 409 */
 410 static NTSTATUS session_setup_spnego(struct composite_context *c,
 411                                      struct smbcli_session *session,
 412                                      struct smb_composite_sesssetup *io,
 413                                      struct smbcli_request **req)
 414 {
 415         struct sesssetup_state *state = talloc_get_type(c->private_data, struct sesssetup_state);
 416         NTSTATUS status;
 417         const char *chosen_oid = NULL;
 418
 419         state->setup.spnego.level           = RAW_SESSSETUP_SPNEGO;
 420         state->setup.spnego.in.bufsize      = session->transport->options.max_xmit;
 421         state->setup.spnego.in.mpx_max      = session->transport->options.max_mux;
 422         state->setup.spnego.in.vc_num       = 1;
 423         state->setup.spnego.in.sesskey      = io->in.sesskey;
 424         state->setup.spnego.in.capabilities = io->in.capabilities;
 425         state->setup.spnego.in.os           = "Unix";
 426         state->setup.spnego.in.lanman       = talloc_asprintf(state, "Samba %s", SAMBA_VERSION_STRING);
 427         state->setup.spnego.in.workgroup    = io->in.workgroup;
 428
 429         smbcli_temp_set_signing(session->transport);
 430
 431         status = gensec_client_start(session, &session->gensec, c->event_ctx,
 432                                      io->in.gensec_settings);
 433         if (!NT_STATUS_IS_OK(status)) {
 434                 DEBUG(1, ("Failed to start GENSEC client mode: %s\n", nt_errstr(status)));
 435                 return status;
 436         }
 437
 438         gensec_want_feature(session->gensec, GENSEC_FEATURE_SESSION_KEY);
 439
 440         status = gensec_set_credentials(session->gensec, io->in.credentials);
 441         if (!NT_STATUS_IS_OK(status)) {
 442                 DEBUG(1, ("Failed to start set GENSEC client credentials: %s\n",
 443                           nt_errstr(status)));
 444                 return status;
 445         }
 446
 447         status = gensec_set_target_hostname(session->gensec, session->transport->socket->hostname);
 448         if (!NT_STATUS_IS_OK(status)) {
 449                 DEBUG(1, ("Failed to start set GENSEC target hostname: %s\n",
 450                           nt_errstr(status)));
 451                 return status;
 452         }
 453
 454         status = gensec_set_target_service(session->gensec, "cifs");
 455         if (!NT_STATUS_IS_OK(status)) {
 456                 DEBUG(1, ("Failed to start set GENSEC target service: %s\n",
 457                           nt_errstr(status)));
 458                 return status;
 459         }
 460
 461         if (session->transport->negotiate.secblob.length) {
 462                 chosen_oid = GENSEC_OID_SPNEGO;
 463                 status = gensec_start_mech_by_oid(session->gensec, chosen_oid);
 464                 if (!NT_STATUS_IS_OK(status)) {
 465                         DEBUG(1, ("Failed to start set GENSEC client mechanism %s: %s\n",
 466                                   gensec_get_name_by_oid(session->gensec, chosen_oid), nt_errstr(status)));
 467                         chosen_oid = GENSEC_OID_NTLMSSP;
 468                         status = gensec_start_mech_by_oid(session->gensec, chosen_oid);
 469                         if (!NT_STATUS_IS_OK(status)) {
 470                                 DEBUG(1, ("Failed to start set (fallback) GENSEC client mechanism %s: %s\n",
 471                                           gensec_get_name_by_oid(session->gensec, chosen_oid),
 472                                           nt_errstr(status)));
 473                         return status;
 474                         }
 475                 }
 476         } else {
 477                 /* without a sec blob, means raw NTLMSSP */
 478                 chosen_oid = GENSEC_OID_NTLMSSP;
 479                 status = gensec_start_mech_by_oid(session->gensec, chosen_oid);
 480                 if (!NT_STATUS_IS_OK(status)) {
 481                         DEBUG(1, ("Failed to start set GENSEC client mechanism %s: %s\n",
 482                                   gensec_get_name_by_oid(session->gensec, chosen_oid), nt_errstr(status)));
 483                 }
 484         }
 485
 486         if ((const void *)chosen_oid == (const void *)GENSEC_OID_SPNEGO) {
 487                 status = gensec_update(session->gensec, state,
 488                                        session->transport->negotiate.secblob,
 489                                        &state->setup.spnego.in.secblob);
 490         } else {
 491                 status = gensec_update(session->gensec, state,
 492                                        data_blob(NULL, 0),
 493                                        &state->setup.spnego.in.secblob);
 494
 495         }
 496
 497         if (!NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED) &&
 498             !NT_STATUS_IS_OK(status)) {
 499                 DEBUG(1, ("Failed initial gensec_update with mechanism %s: %s\n",
 500                           gensec_get_name_by_oid(session->gensec, chosen_oid),
 501                           nt_errstr(status)));
 502                 return status;
 503         }
 504         state->gensec_status = status;
 505
 506         *req = smb_raw_sesssetup_send(session, &state->setup);
 507         if (!*req) {
 508                 return NT_STATUS_NO_MEMORY;
 509         }
 510
 511         /*
 512          * we need to check the signature ourself
 513          * as the session key might be the acceptor subkey
 514          * which comes within the response itself
 515          */
 516         (*req)->sign_caller_checks = true;
 517
 518         return (*req)->status;
 519 }
 520
 521
 522 /*
 523   composite session setup function that hides the details of all the
 524   different session setup varients, including the multi-pass nature of
 525   the spnego varient
 526 */
 527 struct composite_context *smb_composite_sesssetup_send(struct smbcli_session *session,
 528                                                        struct smb_composite_sesssetup *io)
 529 {
 530         struct composite_context *c;
 531         struct sesssetup_state *state;
 532         NTSTATUS status;
 533
 534         c = composite_create(session, session->transport->socket->event.ctx);
 535         if (c == NULL) return NULL;
 536
 537         state = talloc_zero(c, struct sesssetup_state);
 538         if (composite_nomem(state, c)) return c;
 539         c->private_data = state;
 540
 541         state->io = io;
 542
 543         talloc_set_destructor(state, sesssetup_state_destructor);
 544
 545         /* no session setup at all in earliest protocol varients */
 546         if (session->transport->negotiate.protocol < PROTOCOL_LANMAN1) {
 547                 ZERO_STRUCT(io->out);
 548                 composite_done(c);
 549                 return c;
 550         }
 551
 552         /* see what session setup interface we will use */
 553         if (session->transport->negotiate.protocol < PROTOCOL_NT1) {
 554                 status = session_setup_old(c, session, io, &state->req);
 555         } else if (!session->transport->options.use_spnego ||
 556                    !(io->in.capabilities & CAP_EXTENDED_SECURITY)) {
 557                 status = session_setup_nt1(c, session, io, &state->req);
 558         } else {
 559                 status = session_setup_spnego(c, session, io, &state->req);
 560         }
 561
 562         if (NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED) ||
 563             NT_STATUS_IS_OK(status)) {
 564                 composite_continue_smb(c, state->req, request_handler, c);
 565                 return c;
 566         }
 567
 568         composite_error(c, status);
 569         return c;
 570 }
 571
 572
 573 /*
 574   receive a composite session setup reply
 575 */
 576 NTSTATUS smb_composite_sesssetup_recv(struct composite_context *c)
 577 {
 578         NTSTATUS status;
 579         status = composite_wait(c);
 580         talloc_free(c);
 581         return status;
 582 }
 583
 584 /*
 585   sync version of smb_composite_sesssetup
 586 */
 587 NTSTATUS smb_composite_sesssetup(struct smbcli_session *session, struct smb_composite_sesssetup *io)
 588 {
 589         struct composite_context *c = smb_composite_sesssetup_send(session, io);
 590         return smb_composite_sesssetup_recv(c);
 591 }