source3/libsmb/clifsinfo.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3    FS info functions
   4    Copyright (C) Stefan (metze) Metzmacher      2003
   5    Copyright (C) Jeremy Allison 2007
   6    Copyright (C) Andrew Bartlett 2011
   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 #include "includes.h"
  23 #include "libsmb/libsmb.h"
  24 #include "../lib/util/tevent_ntstatus.h"
  25 #include "async_smb.h"
  26 #include "../libcli/smb/smb_seal.h"
  27 #include "trans2.h"
  28 #include "auth_generic.h"
  29 #include "auth/gensec/gensec.h"
  30 #include "../libcli/smb/smbXcli_base.h"
  31 #include "auth/credentials/credentials.h"
  32
  33 /****************************************************************************
  34  Get UNIX extensions version info.
  35 ****************************************************************************/
  36
  37 struct cli_unix_extensions_version_state {
  38         struct cli_state *cli;
  39         uint16_t setup[1];
  40         uint8_t param[2];
  41         uint16_t major, minor;
  42         uint32_t caplow, caphigh;
  43 };
  44
  45 static void cli_unix_extensions_version_done(struct tevent_req *subreq);
  46
  47 struct tevent_req *cli_unix_extensions_version_send(TALLOC_CTX *mem_ctx,
  48                                                     struct tevent_context *ev,
  49                                                     struct cli_state *cli)
  50 {
  51         struct tevent_req *req, *subreq;
  52         struct cli_unix_extensions_version_state *state;
  53
  54         req = tevent_req_create(mem_ctx, &state,
  55                                 struct cli_unix_extensions_version_state);
  56         if (req == NULL) {
  57                 return NULL;
  58         }
  59         state->cli = cli;
  60         SSVAL(state->setup, 0, TRANSACT2_QFSINFO);
  61         SSVAL(state->param, 0, SMB_QUERY_CIFS_UNIX_INFO);
  62
  63         subreq = cli_trans_send(state, ev, cli, SMBtrans2,
  64                                 NULL, 0, 0, 0,
  65                                 state->setup, 1, 0,
  66                                 state->param, 2, 0,
  67                                 NULL, 0, 560);
  68         if (tevent_req_nomem(subreq, req)) {
  69                 return tevent_req_post(req, ev);
  70         }
  71         tevent_req_set_callback(subreq, cli_unix_extensions_version_done, req);
  72         return req;
  73 }
  74
  75 static void cli_unix_extensions_version_done(struct tevent_req *subreq)
  76 {
  77         struct tevent_req *req = tevent_req_callback_data(
  78                 subreq, struct tevent_req);
  79         struct cli_unix_extensions_version_state *state = tevent_req_data(
  80                 req, struct cli_unix_extensions_version_state);
  81         uint8_t *data;
  82         uint32_t num_data;
  83         NTSTATUS status;
  84
  85         status = cli_trans_recv(subreq, state, NULL, NULL, 0, NULL,
  86                                 NULL, 0, NULL, &data, 12, &num_data);
  87         TALLOC_FREE(subreq);
  88         if (!NT_STATUS_IS_OK(status)) {
  89                 tevent_req_nterror(req, status);
  90                 return;
  91         }
  92
  93         state->major = SVAL(data, 0);
  94         state->minor = SVAL(data, 2);
  95         state->caplow = IVAL(data, 4);
  96         state->caphigh = IVAL(data, 8);
  97         TALLOC_FREE(data);
  98         tevent_req_done(req);
  99 }
 100
 101 NTSTATUS cli_unix_extensions_version_recv(struct tevent_req *req,
 102                                           uint16_t *pmajor, uint16_t *pminor,
 103                                           uint32_t *pcaplow,
 104                                           uint32_t *pcaphigh)
 105 {
 106         struct cli_unix_extensions_version_state *state = tevent_req_data(
 107                 req, struct cli_unix_extensions_version_state);
 108         NTSTATUS status;
 109
 110         if (tevent_req_is_nterror(req, &status)) {
 111                 return status;
 112         }
 113         *pmajor = state->major;
 114         *pminor = state->minor;
 115         *pcaplow = state->caplow;
 116         *pcaphigh = state->caphigh;
 117         state->cli->server_posix_capabilities = *pcaplow;
 118         return NT_STATUS_OK;
 119 }
 120
 121 NTSTATUS cli_unix_extensions_version(struct cli_state *cli, uint16_t *pmajor,
 122                                      uint16_t *pminor, uint32_t *pcaplow,
 123                                      uint32_t *pcaphigh)
 124 {
 125         TALLOC_CTX *frame = talloc_stackframe();
 126         struct tevent_context *ev;
 127         struct tevent_req *req;
 128         NTSTATUS status = NT_STATUS_OK;
 129
 130         if (smbXcli_conn_has_async_calls(cli->conn)) {
 131                 /*
 132                  * Can't use sync call while an async call is in flight
 133                  */
 134                 status = NT_STATUS_INVALID_PARAMETER;
 135                 goto fail;
 136         }
 137
 138         ev = samba_tevent_context_init(frame);
 139         if (ev == NULL) {
 140                 status = NT_STATUS_NO_MEMORY;
 141                 goto fail;
 142         }
 143
 144         req = cli_unix_extensions_version_send(frame, ev, cli);
 145         if (req == NULL) {
 146                 status = NT_STATUS_NO_MEMORY;
 147                 goto fail;
 148         }
 149
 150         if (!tevent_req_poll_ntstatus(req, ev, &status)) {
 151                 goto fail;
 152         }
 153
 154         status = cli_unix_extensions_version_recv(req, pmajor, pminor, pcaplow,
 155                                                   pcaphigh);
 156  fail:
 157         TALLOC_FREE(frame);
 158         return status;
 159 }
 160
 161 /****************************************************************************
 162  Set UNIX extensions capabilities.
 163 ****************************************************************************/
 164
 165 struct cli_set_unix_extensions_capabilities_state {
 166         struct cli_state *cli;
 167         uint16_t setup[1];
 168         uint8_t param[4];
 169         uint8_t data[12];
 170 };
 171
 172 static void cli_set_unix_extensions_capabilities_done(
 173         struct tevent_req *subreq);
 174
 175 struct tevent_req *cli_set_unix_extensions_capabilities_send(
 176         TALLOC_CTX *mem_ctx, struct tevent_context *ev, struct cli_state *cli,
 177         uint16_t major, uint16_t minor, uint32_t caplow, uint32_t caphigh)
 178 {
 179         struct tevent_req *req, *subreq;
 180         struct cli_set_unix_extensions_capabilities_state *state;
 181
 182         req = tevent_req_create(
 183                 mem_ctx, &state,
 184                 struct cli_set_unix_extensions_capabilities_state);
 185         if (req == NULL) {
 186                 return NULL;
 187         }
 188
 189         state->cli = cli;
 190         SSVAL(state->setup+0, 0, TRANSACT2_SETFSINFO);
 191
 192         SSVAL(state->param, 0, 0);
 193         SSVAL(state->param, 2, SMB_SET_CIFS_UNIX_INFO);
 194
 195         SSVAL(state->data, 0, major);
 196         SSVAL(state->data, 2, minor);
 197         SIVAL(state->data, 4, caplow);
 198         SIVAL(state->data, 8, caphigh);
 199
 200         subreq = cli_trans_send(state, ev, cli, SMBtrans2,
 201                                 NULL, 0, 0, 0,
 202                                 state->setup, 1, 0,
 203                                 state->param, 4, 0,
 204                                 state->data, 12, 560);
 205         if (tevent_req_nomem(subreq, req)) {
 206                 return tevent_req_post(req, ev);
 207         }
 208         tevent_req_set_callback(
 209                 subreq, cli_set_unix_extensions_capabilities_done, req);
 210         return req;
 211 }
 212
 213 static void cli_set_unix_extensions_capabilities_done(
 214         struct tevent_req *subreq)
 215 {
 216         struct tevent_req *req = tevent_req_callback_data(
 217                 subreq, struct tevent_req);
 218         struct cli_set_unix_extensions_capabilities_state *state = tevent_req_data(
 219                 req, struct cli_set_unix_extensions_capabilities_state);
 220
 221         NTSTATUS status = cli_trans_recv(subreq, NULL, NULL, NULL, 0, NULL,
 222                                          NULL, 0, NULL, NULL, 0, NULL);
 223         if (NT_STATUS_IS_OK(status)) {
 224                 state->cli->requested_posix_capabilities = IVAL(state->data, 4);
 225         }
 226         tevent_req_simple_finish_ntstatus(subreq, status);
 227 }
 228
 229 NTSTATUS cli_set_unix_extensions_capabilities_recv(struct tevent_req *req)
 230 {
 231         return tevent_req_simple_recv_ntstatus(req);
 232 }
 233
 234 NTSTATUS cli_set_unix_extensions_capabilities(struct cli_state *cli,
 235                                               uint16_t major, uint16_t minor,
 236                                               uint32_t caplow, uint32_t caphigh)
 237 {
 238         struct tevent_context *ev;
 239         struct tevent_req *req;
 240         NTSTATUS status = NT_STATUS_NO_MEMORY;
 241
 242         if (smbXcli_conn_has_async_calls(cli->conn)) {
 243                 return NT_STATUS_INVALID_PARAMETER;
 244         }
 245         ev = samba_tevent_context_init(talloc_tos());
 246         if (ev == NULL) {
 247                 goto fail;
 248         }
 249         req = cli_set_unix_extensions_capabilities_send(
 250                 ev, ev, cli, major, minor, caplow, caphigh);
 251         if (req == NULL) {
 252                 goto fail;
 253         }
 254         if (!tevent_req_poll_ntstatus(req, ev, &status)) {
 255                 goto fail;
 256         }
 257         status = cli_set_unix_extensions_capabilities_recv(req);
 258 fail:
 259         TALLOC_FREE(ev);
 260         return status;
 261 }
 262
 263 struct cli_get_fs_attr_info_state {
 264         uint16_t setup[1];
 265         uint8_t param[2];
 266         uint32_t fs_attr;
 267 };
 268
 269 static void cli_get_fs_attr_info_done(struct tevent_req *subreq);
 270
 271 struct tevent_req *cli_get_fs_attr_info_send(TALLOC_CTX *mem_ctx,
 272                                              struct tevent_context *ev,
 273                                              struct cli_state *cli)
 274 {
 275         struct tevent_req *subreq, *req;
 276         struct cli_get_fs_attr_info_state *state;
 277
 278         req = tevent_req_create(mem_ctx, &state,
 279                                 struct cli_get_fs_attr_info_state);
 280         if (req == NULL) {
 281                 return NULL;
 282         }
 283         SSVAL(state->setup+0, 0, TRANSACT2_QFSINFO);
 284         SSVAL(state->param+0, 0, SMB_QUERY_FS_ATTRIBUTE_INFO);
 285
 286         subreq = cli_trans_send(state, ev, cli, SMBtrans2,
 287                                 NULL, 0, 0, 0,
 288                                 state->setup, 1, 0,
 289                                 state->param, 2, 0,
 290                                 NULL, 0, 560);
 291         if (tevent_req_nomem(subreq, req)) {
 292                 return tevent_req_post(req, ev);
 293         }
 294         tevent_req_set_callback(subreq, cli_get_fs_attr_info_done, req);
 295         return req;
 296 }
 297
 298 static void cli_get_fs_attr_info_done(struct tevent_req *subreq)
 299 {
 300         struct tevent_req *req = tevent_req_callback_data(
 301                 subreq, struct tevent_req);
 302         struct cli_get_fs_attr_info_state *state = tevent_req_data(
 303                 req, struct cli_get_fs_attr_info_state);
 304         uint8_t *data;
 305         uint32_t num_data;
 306         NTSTATUS status;
 307
 308         status = cli_trans_recv(subreq, talloc_tos(), NULL, NULL, 0, NULL,
 309                                 NULL, 0, NULL, &data, 12, &num_data);
 310         TALLOC_FREE(subreq);
 311         if (!NT_STATUS_IS_OK(status)) {
 312                 tevent_req_nterror(req, status);
 313                 return;
 314         }
 315         state->fs_attr = IVAL(data, 0);
 316         TALLOC_FREE(data);
 317         tevent_req_done(req);
 318 }
 319
 320 NTSTATUS cli_get_fs_attr_info_recv(struct tevent_req *req, uint32_t *fs_attr)
 321 {
 322         struct cli_get_fs_attr_info_state *state = tevent_req_data(
 323                 req, struct cli_get_fs_attr_info_state);
 324         NTSTATUS status;
 325
 326         if (tevent_req_is_nterror(req, &status)) {
 327                 return status;
 328         }
 329         *fs_attr = state->fs_attr;
 330         return NT_STATUS_OK;
 331 }
 332
 333 NTSTATUS cli_get_fs_attr_info(struct cli_state *cli, uint32_t *fs_attr)
 334 {
 335         struct tevent_context *ev;
 336         struct tevent_req *req;
 337         NTSTATUS status = NT_STATUS_NO_MEMORY;
 338
 339         if (smbXcli_conn_has_async_calls(cli->conn)) {
 340                 return NT_STATUS_INVALID_PARAMETER;
 341         }
 342         ev = samba_tevent_context_init(talloc_tos());
 343         if (ev == NULL) {
 344                 goto fail;
 345         }
 346         req = cli_get_fs_attr_info_send(ev, ev, cli);
 347         if (req == NULL) {
 348                 goto fail;
 349         }
 350         if (!tevent_req_poll_ntstatus(req, ev, &status)) {
 351                 goto fail;
 352         }
 353         status = cli_get_fs_attr_info_recv(req, fs_attr);
 354 fail:
 355         TALLOC_FREE(ev);
 356         return status;
 357 }
 358
 359 NTSTATUS cli_get_fs_volume_info(struct cli_state *cli,
 360                                 TALLOC_CTX *mem_ctx,
 361                                 char **_volume_name,
 362                                 uint32_t *pserial_number,
 363                                 time_t *pdate)
 364 {
 365         NTSTATUS status;
 366         uint16_t recv_flags2;
 367         uint16_t setup[1];
 368         uint8_t param[2];
 369         uint8_t *rdata;
 370         uint32_t rdata_count;
 371         unsigned int nlen;
 372         char *volume_name = NULL;
 373
 374         SSVAL(setup, 0, TRANSACT2_QFSINFO);
 375         SSVAL(param,0,SMB_QUERY_FS_VOLUME_INFO);
 376
 377         status = cli_trans(talloc_tos(), cli, SMBtrans2,
 378                            NULL, 0, 0, 0,
 379                            setup, 1, 0,
 380                            param, 2, 0,
 381                            NULL, 0, 560,
 382                            &recv_flags2,
 383                            NULL, 0, NULL,
 384                            NULL, 0, NULL,
 385                            &rdata, 18, &rdata_count);
 386         if (!NT_STATUS_IS_OK(status)) {
 387                 return status;
 388         }
 389
 390         if (pdate) {
 391                 struct timespec ts;
 392                 ts = interpret_long_date((char *)rdata);
 393                 *pdate = ts.tv_sec;
 394         }
 395         if (pserial_number) {
 396                 *pserial_number = IVAL(rdata,8);
 397         }
 398         nlen = IVAL(rdata,12);
 399         if (nlen > (rdata_count - 18)) {
 400                 TALLOC_FREE(rdata);
 401                 return NT_STATUS_INVALID_NETWORK_RESPONSE;
 402         }
 403
 404         clistr_pull_talloc(mem_ctx,
 405                            (const char *)rdata,
 406                            recv_flags2,
 407                            &volume_name,
 408                            rdata + 18,
 409                            nlen, STR_UNICODE);
 410         if (volume_name == NULL) {
 411                 status = map_nt_error_from_unix(errno);
 412                 TALLOC_FREE(rdata);
 413                 return status;
 414         }
 415
 416         /* todo: but not yet needed
 417          *       return the other stuff
 418          */
 419
 420         *_volume_name = volume_name;
 421         TALLOC_FREE(rdata);
 422         return NT_STATUS_OK;
 423 }
 424
 425 NTSTATUS cli_get_fs_full_size_info(struct cli_state *cli,
 426                                    uint64_t *total_allocation_units,
 427                                    uint64_t *caller_allocation_units,
 428                                    uint64_t *actual_allocation_units,
 429                                    uint64_t *sectors_per_allocation_unit,
 430                                    uint64_t *bytes_per_sector)
 431 {
 432         uint16_t setup[1];
 433         uint8_t param[2];
 434         uint8_t *rdata = NULL;
 435         uint32_t rdata_count;
 436         NTSTATUS status;
 437
 438         SSVAL(setup, 0, TRANSACT2_QFSINFO);
 439         SSVAL(param, 0, SMB_FS_FULL_SIZE_INFORMATION);
 440
 441         status = cli_trans(talloc_tos(), cli, SMBtrans2,
 442                            NULL, 0, 0, 0,
 443                            setup, 1, 0, /* setup */
 444                            param, 2, 0,  /* param */
 445                            NULL, 0, 560, /* data */
 446                            NULL,
 447                            NULL, 0, NULL, /* rsetup */
 448                            NULL, 0, NULL, /* rparam */
 449                            &rdata, 32, &rdata_count);  /* rdata */
 450         if (!NT_STATUS_IS_OK(status)) {
 451                 goto fail;
 452         }
 453
 454         if (total_allocation_units) {
 455                 *total_allocation_units = BIG_UINT(rdata, 0);
 456         }
 457         if (caller_allocation_units) {
 458                 *caller_allocation_units = BIG_UINT(rdata,8);
 459         }
 460         if (actual_allocation_units) {
 461                 *actual_allocation_units = BIG_UINT(rdata,16);
 462         }
 463         if (sectors_per_allocation_unit) {
 464                 *sectors_per_allocation_unit = IVAL(rdata,24);
 465         }
 466         if (bytes_per_sector) {
 467                 *bytes_per_sector = IVAL(rdata,28);
 468         }
 469
 470 fail:
 471         TALLOC_FREE(rdata);
 472         return status;
 473 }
 474
 475 NTSTATUS cli_get_posix_fs_info(struct cli_state *cli,
 476                                uint32_t *optimal_transfer_size,
 477                                uint32_t *block_size,
 478                                uint64_t *total_blocks,
 479                                uint64_t *blocks_available,
 480                                uint64_t *user_blocks_available,
 481                                uint64_t *total_file_nodes,
 482                                uint64_t *free_file_nodes,
 483                                uint64_t *fs_identifier)
 484 {
 485         uint16_t setup[1];
 486         uint8_t param[2];
 487         uint8_t *rdata = NULL;
 488         uint32_t rdata_count;
 489         NTSTATUS status;
 490
 491         SSVAL(setup, 0, TRANSACT2_QFSINFO);
 492         SSVAL(param,0,SMB_QUERY_POSIX_FS_INFO);
 493
 494         status = cli_trans(talloc_tos(), cli, SMBtrans2, NULL, 0, 0, 0,
 495                            setup, 1, 0,
 496                            param, 2, 0,
 497                            NULL, 0, 560,
 498                            NULL,
 499                            NULL, 0, NULL, /* rsetup */
 500                            NULL, 0, NULL, /* rparam */
 501                            &rdata, 56, &rdata_count);
 502         if (!NT_STATUS_IS_OK(status)) {
 503                 return status;
 504         }
 505
 506         if (optimal_transfer_size) {
 507                 *optimal_transfer_size = IVAL(rdata, 0);
 508         }
 509         if (block_size) {
 510                 *block_size = IVAL(rdata,4);
 511         }
 512         if (total_blocks) {
 513                 *total_blocks = BIG_UINT(rdata,8);
 514         }
 515         if (blocks_available) {
 516                 *blocks_available = BIG_UINT(rdata,16);
 517         }
 518         if (user_blocks_available) {
 519                 *user_blocks_available = BIG_UINT(rdata,24);
 520         }
 521         if (total_file_nodes) {
 522                 *total_file_nodes = BIG_UINT(rdata,32);
 523         }
 524         if (free_file_nodes) {
 525                 *free_file_nodes = BIG_UINT(rdata,40);
 526         }
 527         if (fs_identifier) {
 528                 *fs_identifier = BIG_UINT(rdata,48);
 529         }
 530         return NT_STATUS_OK;
 531 }
 532
 533
 534 /******************************************************************************
 535  Send/receive the request encryption blob.
 536 ******************************************************************************/
 537
 538 static NTSTATUS enc_blob_send_receive(struct cli_state *cli, DATA_BLOB *in, DATA_BLOB *out, DATA_BLOB *param_out)
 539 {
 540         uint16_t setup[1];
 541         uint8_t param[4];
 542         uint8_t *rparam=NULL, *rdata=NULL;
 543         uint32_t num_rparam, num_rdata;
 544         NTSTATUS status;
 545
 546         SSVAL(setup+0, 0, TRANSACT2_SETFSINFO);
 547         SSVAL(param,0,0);
 548         SSVAL(param,2,SMB_REQUEST_TRANSPORT_ENCRYPTION);
 549
 550         status = cli_trans(talloc_tos(), cli, SMBtrans2, NULL, 0, 0, 0,
 551                            setup, 1, 0,
 552                            param, 4, 2,
 553                            (uint8_t *)in->data, in->length, CLI_BUFFER_SIZE,
 554                            NULL,          /* recv_flags */
 555                            NULL, 0, NULL, /* rsetup */
 556                            &rparam, 0, &num_rparam,
 557                            &rdata, 0, &num_rdata);
 558
 559         if (!NT_STATUS_IS_OK(status) &&
 560             !NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
 561                 return status;
 562         }
 563
 564         *out = data_blob(rdata, num_rdata);
 565         *param_out = data_blob(rparam, num_rparam);
 566
 567         TALLOC_FREE(rparam);
 568         TALLOC_FREE(rdata);
 569         return status;
 570 }
 571
 572 /******************************************************************************
 573  Start a raw ntlmssp encryption.
 574 ******************************************************************************/
 575
 576 NTSTATUS cli_raw_ntlm_smb_encryption_start(struct cli_state *cli,
 577                                 const char *user,
 578                                 const char *pass,
 579                                 const char *domain)
 580 {
 581         DATA_BLOB blob_in = data_blob_null;
 582         DATA_BLOB blob_out = data_blob_null;
 583         DATA_BLOB param_out = data_blob_null;
 584         NTSTATUS status = NT_STATUS_UNSUCCESSFUL;
 585         struct auth_generic_state *auth_generic_state;
 586         struct smb_trans_enc_state *es = talloc_zero(NULL, struct smb_trans_enc_state);
 587         if (!es) {
 588                 return NT_STATUS_NO_MEMORY;
 589         }
 590         status = auth_generic_client_prepare(es,
 591                                              &auth_generic_state);
 592         if (!NT_STATUS_IS_OK(status)) {
 593                 goto fail;
 594         }
 595
 596         gensec_want_feature(auth_generic_state->gensec_security, GENSEC_FEATURE_SESSION_KEY);
 597         gensec_want_feature(auth_generic_state->gensec_security, GENSEC_FEATURE_SEAL);
 598
 599         if (!NT_STATUS_IS_OK(status = auth_generic_set_username(auth_generic_state, user))) {
 600                 goto fail;
 601         }
 602         if (!NT_STATUS_IS_OK(status = auth_generic_set_domain(auth_generic_state, domain))) {
 603                 goto fail;
 604         }
 605         if (!NT_STATUS_IS_OK(status = auth_generic_set_password(auth_generic_state, pass))) {
 606                 goto fail;
 607         }
 608
 609         if (!NT_STATUS_IS_OK(status = auth_generic_client_start(auth_generic_state, GENSEC_OID_NTLMSSP))) {
 610                 goto fail;
 611         }
 612
 613         do {
 614                 status = gensec_update(auth_generic_state->gensec_security, auth_generic_state,
 615                                        blob_in, &blob_out);
 616                 data_blob_free(&blob_in);
 617                 data_blob_free(&param_out);
 618                 if (NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED) || NT_STATUS_IS_OK(status)) {
 619                         NTSTATUS trans_status = enc_blob_send_receive(cli,
 620                                                                         &blob_out,
 621                                                                         &blob_in,
 622                                                                         &param_out);
 623                         if (!NT_STATUS_EQUAL(trans_status,
 624                                         NT_STATUS_MORE_PROCESSING_REQUIRED) &&
 625                                         !NT_STATUS_IS_OK(trans_status)) {
 626                                 status = trans_status;
 627                         } else {
 628                                 if (param_out.length == 2) {
 629                                         es->enc_ctx_num = SVAL(param_out.data, 0);
 630                                 }
 631                         }
 632                 }
 633                 data_blob_free(&blob_out);
 634         } while (NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED));
 635
 636         data_blob_free(&blob_in);
 637
 638         if (NT_STATUS_IS_OK(status)) {
 639                 es->enc_on = true;
 640                 /* Replace the old state, if any. */
 641                 /* We only need the gensec_security part from here.
 642                  * es is a malloc()ed pointer, so we cannot make
 643                  * gensec_security a talloc child */
 644                 es->gensec_security = talloc_move(NULL,
 645                                                   &auth_generic_state->gensec_security);
 646                 smb1cli_conn_set_encryption(cli->conn, es);
 647                 es = NULL;
 648         }
 649
 650   fail:
 651         TALLOC_FREE(es);
 652         return status;
 653 }
 654
 655 /******************************************************************************
 656  Start a SPNEGO gssapi encryption context.
 657 ******************************************************************************/
 658
 659 NTSTATUS cli_gss_smb_encryption_start(struct cli_state *cli)
 660 {
 661         DATA_BLOB blob_recv = data_blob_null;
 662         DATA_BLOB blob_send = data_blob_null;
 663         DATA_BLOB param_out = data_blob_null;
 664         NTSTATUS status = NT_STATUS_UNSUCCESSFUL;
 665         struct auth_generic_state *auth_generic_state;
 666         struct smb_trans_enc_state *es = talloc_zero(NULL, struct smb_trans_enc_state);
 667
 668         if (!es) {
 669                 return NT_STATUS_NO_MEMORY;
 670         }
 671
 672         status = auth_generic_client_prepare(es,
 673                                              &auth_generic_state);
 674         if (!NT_STATUS_IS_OK(status)) {
 675                 goto fail;
 676         }
 677
 678         gensec_want_feature(auth_generic_state->gensec_security, GENSEC_FEATURE_SESSION_KEY);
 679         gensec_want_feature(auth_generic_state->gensec_security, GENSEC_FEATURE_SEAL);
 680
 681         cli_credentials_set_kerberos_state(auth_generic_state->credentials,
 682                                            CRED_MUST_USE_KERBEROS);
 683
 684         status = gensec_set_target_service(auth_generic_state->gensec_security, "cifs");
 685         if (!NT_STATUS_IS_OK(status)) {
 686                 goto fail;
 687         }
 688
 689         status = gensec_set_target_hostname(auth_generic_state->gensec_security,
 690                                             smbXcli_conn_remote_name(cli->conn));
 691         if (!NT_STATUS_IS_OK(status)) {
 692                 goto fail;
 693         }
 694
 695         if (!NT_STATUS_IS_OK(status = auth_generic_client_start(auth_generic_state, GENSEC_OID_SPNEGO))) {
 696                 goto fail;
 697         }
 698
 699         status = gensec_update(auth_generic_state->gensec_security, talloc_tos(),
 700                                blob_recv, &blob_send);
 701
 702         do {
 703                 data_blob_free(&blob_recv);
 704                 status = enc_blob_send_receive(cli, &blob_send, &blob_recv, &param_out);
 705                 if (param_out.length == 2) {
 706                         es->enc_ctx_num = SVAL(param_out.data, 0);
 707                 }
 708                 data_blob_free(&blob_send);
 709                 status = gensec_update(auth_generic_state->gensec_security, talloc_tos(),
 710                                        blob_recv, &blob_send);
 711         } while (NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED));
 712         data_blob_free(&blob_recv);
 713
 714         if (NT_STATUS_IS_OK(status)) {
 715                 if (!gensec_have_feature(auth_generic_state->gensec_security,
 716                                          GENSEC_FEATURE_SIGN) ||
 717                     !gensec_have_feature(auth_generic_state->gensec_security,
 718                                          GENSEC_FEATURE_SEAL)) {
 719                         status = NT_STATUS_ACCESS_DENIED;
 720                 }
 721         }
 722
 723         if (NT_STATUS_IS_OK(status)) {
 724                 es->enc_on = true;
 725                 /* Replace the old state, if any. */
 726                 /* We only need the gensec_security part from here.
 727                  * es is a malloc()ed pointer, so we cannot make
 728                  * gensec_security a talloc child */
 729                 es->gensec_security = talloc_move(es,
 730                                                   &auth_generic_state->gensec_security);
 731                 smb1cli_conn_set_encryption(cli->conn, es);
 732                 es = NULL;
 733         }
 734 fail:
 735         TALLOC_FREE(es);
 736         return status;
 737 }
 738
 739 /********************************************************************
 740  Ensure a connection is encrypted.
 741 ********************************************************************/
 742
 743 NTSTATUS cli_force_encryption(struct cli_state *c,
 744                         const char *username,
 745                         const char *password,
 746                         const char *domain)
 747 {
 748         uint16_t major, minor;
 749         uint32_t caplow, caphigh;
 750         NTSTATUS status;
 751
 752         if (!SERVER_HAS_UNIX_CIFS(c)) {
 753                 return NT_STATUS_NOT_SUPPORTED;
 754         }
 755
 756         status = cli_unix_extensions_version(c, &major, &minor, &caplow,
 757                                              &caphigh);
 758         if (!NT_STATUS_IS_OK(status)) {
 759                 DEBUG(10, ("cli_force_encryption: cli_unix_extensions_version "
 760                            "returned %s\n", nt_errstr(status)));
 761                 return NT_STATUS_UNKNOWN_REVISION;
 762         }
 763
 764         if (!(caplow & CIFS_UNIX_TRANSPORT_ENCRYPTION_CAP)) {
 765                 return NT_STATUS_UNSUPPORTED_COMPRESSION;
 766         }
 767
 768         if (c->use_kerberos) {
 769                 return cli_gss_smb_encryption_start(c);
 770         }
 771         return cli_raw_ntlm_smb_encryption_start(c,
 772                                         username,
 773                                         password,
 774                                         domain);
 775 }