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
   7    This program is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License as published by
   9    the Free Software Foundation; either version 3 of the License, or
  10    (at your option) any later version.
  11
  12    This program is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15    GNU General Public License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  19 */
  20
  21 #include "includes.h"
  22 #include "../libcli/auth/spnego.h"
  23
  24 /****************************************************************************
  25  Get UNIX extensions version info.
  26 ****************************************************************************/
  27
  28 struct cli_unix_extensions_version_state {
  29         uint16_t setup[1];
  30         uint8_t param[2];
  31         uint16_t major, minor;
  32         uint32_t caplow, caphigh;
  33 };
  34
  35 static void cli_unix_extensions_version_done(struct tevent_req *subreq);
  36
  37 struct tevent_req *cli_unix_extensions_version_send(TALLOC_CTX *mem_ctx,
  38                                                     struct tevent_context *ev,
  39                                                     struct cli_state *cli)
  40 {
  41         struct tevent_req *req, *subreq;
  42         struct cli_unix_extensions_version_state *state;
  43
  44         req = tevent_req_create(mem_ctx, &state,
  45                                 struct cli_unix_extensions_version_state);
  46         if (req == NULL) {
  47                 return NULL;
  48         }
  49         SSVAL(state->setup, 0, TRANSACT2_QFSINFO);
  50         SSVAL(state->param, 0, SMB_QUERY_CIFS_UNIX_INFO);
  51
  52         subreq = cli_trans_send(state, ev, cli, SMBtrans2,
  53                                 NULL, 0, 0, 0,
  54                                 state->setup, 1, 0,
  55                                 state->param, 2, 0,
  56                                 NULL, 0, 560);
  57         if (tevent_req_nomem(subreq, req)) {
  58                 return tevent_req_post(req, ev);
  59         }
  60         tevent_req_set_callback(subreq, cli_unix_extensions_version_done, req);
  61         return req;
  62 }
  63
  64 static void cli_unix_extensions_version_done(struct tevent_req *subreq)
  65 {
  66         struct tevent_req *req = tevent_req_callback_data(
  67                 subreq, struct tevent_req);
  68         struct cli_unix_extensions_version_state *state = tevent_req_data(
  69                 req, struct cli_unix_extensions_version_state);
  70         uint8_t *data;
  71         uint32_t num_data;
  72         NTSTATUS status;
  73
  74         status = cli_trans_recv(subreq, state, NULL, 0, NULL, NULL, 0, NULL,
  75                                 &data, 12, &num_data);
  76         TALLOC_FREE(subreq);
  77         if (!NT_STATUS_IS_OK(status)) {
  78                 tevent_req_nterror(req, status);
  79                 return;
  80         }
  81
  82         state->major = SVAL(data, 0);
  83         state->minor = SVAL(data, 2);
  84         state->caplow = IVAL(data, 4);
  85         state->caphigh = IVAL(data, 8);
  86         TALLOC_FREE(data);
  87         tevent_req_done(req);
  88 }
  89
  90 NTSTATUS cli_unix_extensions_version_recv(struct tevent_req *req,
  91                                           uint16_t *pmajor, uint16_t *pminor,
  92                                           uint32_t *pcaplow,
  93                                           uint32_t *pcaphigh)
  94 {
  95         struct cli_unix_extensions_version_state *state = tevent_req_data(
  96                 req, struct cli_unix_extensions_version_state);
  97         NTSTATUS status;
  98
  99         if (tevent_req_is_nterror(req, &status)) {
 100                 return status;
 101         }
 102         *pmajor = state->major;
 103         *pminor = state->minor;
 104         *pcaplow = state->caplow;
 105         *pcaphigh = state->caphigh;
 106         return NT_STATUS_OK;
 107 }
 108
 109 NTSTATUS cli_unix_extensions_version(struct cli_state *cli, uint16 *pmajor,
 110                                      uint16 *pminor, uint32 *pcaplow,
 111                                      uint32 *pcaphigh)
 112 {
 113         TALLOC_CTX *frame = talloc_stackframe();
 114         struct event_context *ev;
 115         struct tevent_req *req;
 116         NTSTATUS status = NT_STATUS_OK;
 117
 118         if (cli_has_async_calls(cli)) {
 119                 /*
 120                  * Can't use sync call while an async call is in flight
 121                  */
 122                 status = NT_STATUS_INVALID_PARAMETER;
 123                 goto fail;
 124         }
 125
 126         ev = event_context_init(frame);
 127         if (ev == NULL) {
 128                 status = NT_STATUS_NO_MEMORY;
 129                 goto fail;
 130         }
 131
 132         req = cli_unix_extensions_version_send(frame, ev, cli);
 133         if (req == NULL) {
 134                 status = NT_STATUS_NO_MEMORY;
 135                 goto fail;
 136         }
 137
 138         if (!tevent_req_poll(req, ev)) {
 139                 status = map_nt_error_from_unix(errno);
 140                 goto fail;
 141         }
 142
 143         status = cli_unix_extensions_version_recv(req, pmajor, pminor, pcaplow,
 144                                                   pcaphigh);
 145         if (NT_STATUS_IS_OK(status)) {
 146                 cli->posix_capabilities = *pcaplow;
 147         }
 148  fail:
 149         TALLOC_FREE(frame);
 150         if (!NT_STATUS_IS_OK(status)) {
 151                 cli_set_error(cli, status);
 152         }
 153         return status;
 154 }
 155
 156 /****************************************************************************
 157  Set UNIX extensions capabilities.
 158 ****************************************************************************/
 159
 160 struct cli_set_unix_extensions_capabilities_state {
 161         uint16_t setup[1];
 162         uint8_t param[4];
 163         uint8_t data[12];
 164 };
 165
 166 static void cli_set_unix_extensions_capabilities_done(
 167         struct tevent_req *subreq);
 168
 169 struct tevent_req *cli_set_unix_extensions_capabilities_send(
 170         TALLOC_CTX *mem_ctx, struct tevent_context *ev, struct cli_state *cli,
 171         uint16_t major, uint16_t minor, uint32_t caplow, uint32_t caphigh)
 172 {
 173         struct tevent_req *req, *subreq;
 174         struct cli_set_unix_extensions_capabilities_state *state;
 175
 176         req = tevent_req_create(
 177                 mem_ctx, &state,
 178                 struct cli_set_unix_extensions_capabilities_state);
 179         if (req == NULL) {
 180                 return NULL;
 181         }
 182
 183         SSVAL(state->setup+0, 0, TRANSACT2_SETFSINFO);
 184
 185         SSVAL(state->param, 0, 0);
 186         SSVAL(state->param, 2, SMB_SET_CIFS_UNIX_INFO);
 187
 188         SSVAL(state->data, 0, major);
 189         SSVAL(state->data, 2, minor);
 190         SIVAL(state->data, 4, caplow);
 191         SIVAL(state->data, 8, caphigh);
 192
 193         subreq = cli_trans_send(state, ev, cli, SMBtrans2,
 194                                 NULL, 0, 0, 0,
 195                                 state->setup, 1, 0,
 196                                 state->param, 4, 0,
 197                                 state->data, 12, 560);
 198         if (tevent_req_nomem(subreq, req)) {
 199                 return tevent_req_post(req, ev);
 200         }
 201         tevent_req_set_callback(
 202                 subreq, cli_set_unix_extensions_capabilities_done, req);
 203         return req;
 204 }
 205
 206 static void cli_set_unix_extensions_capabilities_done(
 207         struct tevent_req *subreq)
 208 {
 209         NTSTATUS status = cli_trans_recv(subreq, NULL, NULL, 0, NULL,
 210                                          NULL, 0, NULL, NULL, 0, NULL);
 211         return tevent_req_simple_finish_ntstatus(subreq, status);
 212 }
 213
 214 NTSTATUS cli_set_unix_extensions_capabilities_recv(struct tevent_req *req)
 215 {
 216         return tevent_req_simple_recv_ntstatus(req);
 217 }
 218
 219 NTSTATUS cli_set_unix_extensions_capabilities(struct cli_state *cli,
 220                                               uint16 major, uint16 minor,
 221                                               uint32 caplow, uint32 caphigh)
 222 {
 223         struct tevent_context *ev;
 224         struct tevent_req *req;
 225         NTSTATUS status = NT_STATUS_NO_MEMORY;
 226
 227         if (cli_has_async_calls(cli)) {
 228                 return NT_STATUS_INVALID_PARAMETER;
 229         }
 230         ev = tevent_context_init(talloc_tos());
 231         if (ev == NULL) {
 232                 goto fail;
 233         }
 234         req = cli_set_unix_extensions_capabilities_send(
 235                 ev, ev, cli, major, minor, caplow, caphigh);
 236         if (req == NULL) {
 237                 goto fail;
 238         }
 239         if (!tevent_req_poll_ntstatus(req, ev, &status)) {
 240                 goto fail;
 241         }
 242         status = cli_set_unix_extensions_capabilities_recv(req);
 243 fail:
 244         TALLOC_FREE(ev);
 245         if (!NT_STATUS_IS_OK(status)) {
 246                 cli_set_error(cli, status);
 247         }
 248         return status;
 249 }
 250
 251 bool cli_get_fs_attr_info(struct cli_state *cli, uint32 *fs_attr)
 252 {
 253         bool ret = False;
 254         uint16 setup;
 255         char param[2];
 256         char *rparam=NULL, *rdata=NULL;
 257         unsigned int rparam_count=0, rdata_count=0;
 258
 259         if (!cli||!fs_attr)
 260                 smb_panic("cli_get_fs_attr_info() called with NULL Pionter!");
 261
 262         setup = TRANSACT2_QFSINFO;
 263
 264         SSVAL(param,0,SMB_QUERY_FS_ATTRIBUTE_INFO);
 265
 266         if (!cli_send_trans(cli, SMBtrans2,
 267                     NULL,
 268                     0, 0,
 269                     &setup, 1, 0,
 270                     param, 2, 0,
 271                     NULL, 0, 560)) {
 272                 goto cleanup;
 273         }
 274
 275         if (!cli_receive_trans(cli, SMBtrans2,
 276                               &rparam, &rparam_count,
 277                               &rdata, &rdata_count)) {
 278                 goto cleanup;
 279         }
 280
 281         if (cli_is_error(cli)) {
 282                 ret = False;
 283                 goto cleanup;
 284         } else {
 285                 ret = True;
 286         }
 287
 288         if (rdata_count < 12) {
 289                 goto cleanup;
 290         }
 291
 292         *fs_attr = IVAL(rdata,0);
 293
 294         /* todo: but not yet needed
 295          *       return the other stuff
 296          */
 297
 298 cleanup:
 299         SAFE_FREE(rparam);
 300         SAFE_FREE(rdata);
 301
 302         return ret;
 303 }
 304
 305 bool cli_get_fs_volume_info_old(struct cli_state *cli, fstring volume_name, uint32 *pserial_number)
 306 {
 307         bool ret = False;
 308         uint16 setup;
 309         char param[2];
 310         char *rparam=NULL, *rdata=NULL;
 311         unsigned int rparam_count=0, rdata_count=0;
 312         unsigned char nlen;
 313
 314         setup = TRANSACT2_QFSINFO;
 315
 316         SSVAL(param,0,SMB_INFO_VOLUME);
 317
 318         if (!cli_send_trans(cli, SMBtrans2,
 319                     NULL,
 320                     0, 0,
 321                     &setup, 1, 0,
 322                     param, 2, 0,
 323                     NULL, 0, 560)) {
 324                 goto cleanup;
 325         }
 326
 327         if (!cli_receive_trans(cli, SMBtrans2,
 328                               &rparam, &rparam_count,
 329                               &rdata, &rdata_count)) {
 330                 goto cleanup;
 331         }
 332
 333         if (cli_is_error(cli)) {
 334                 ret = False;
 335                 goto cleanup;
 336         } else {
 337                 ret = True;
 338         }
 339
 340         if (rdata_count < 5) {
 341                 goto cleanup;
 342         }
 343
 344         if (pserial_number) {
 345                 *pserial_number = IVAL(rdata,0);
 346         }
 347         nlen = CVAL(rdata,l2_vol_cch);
 348         clistr_pull(cli->inbuf, volume_name, rdata + l2_vol_szVolLabel,
 349                     sizeof(fstring), nlen, STR_NOALIGN);
 350
 351         /* todo: but not yet needed
 352          *       return the other stuff
 353          */
 354
 355 cleanup:
 356         SAFE_FREE(rparam);
 357         SAFE_FREE(rdata);
 358
 359         return ret;
 360 }
 361
 362 bool cli_get_fs_volume_info(struct cli_state *cli, fstring volume_name, uint32 *pserial_number, time_t *pdate)
 363 {
 364         bool ret = False;
 365         uint16 setup;
 366         char param[2];
 367         char *rparam=NULL, *rdata=NULL;
 368         unsigned int rparam_count=0, rdata_count=0;
 369         unsigned int nlen;
 370
 371         setup = TRANSACT2_QFSINFO;
 372
 373         SSVAL(param,0,SMB_QUERY_FS_VOLUME_INFO);
 374
 375         if (!cli_send_trans(cli, SMBtrans2,
 376                     NULL,
 377                     0, 0,
 378                     &setup, 1, 0,
 379                     param, 2, 0,
 380                     NULL, 0, 560)) {
 381                 goto cleanup;
 382         }
 383
 384         if (!cli_receive_trans(cli, SMBtrans2,
 385                               &rparam, &rparam_count,
 386                               &rdata, &rdata_count)) {
 387                 goto cleanup;
 388         }
 389
 390         if (cli_is_error(cli)) {
 391                 ret = False;
 392                 goto cleanup;
 393         } else {
 394                 ret = True;
 395         }
 396
 397         if (rdata_count < 19) {
 398                 goto cleanup;
 399         }
 400
 401         if (pdate) {
 402                 struct timespec ts;
 403                 ts = interpret_long_date(rdata);
 404                 *pdate = ts.tv_sec;
 405         }
 406         if (pserial_number) {
 407                 *pserial_number = IVAL(rdata,8);
 408         }
 409         nlen = IVAL(rdata,12);
 410         clistr_pull(cli->inbuf, volume_name, rdata + 18, sizeof(fstring),
 411                     nlen, STR_UNICODE);
 412
 413         /* todo: but not yet needed
 414          *       return the other stuff
 415          */
 416
 417 cleanup:
 418         SAFE_FREE(rparam);
 419         SAFE_FREE(rdata);
 420
 421         return ret;
 422 }
 423
 424 bool cli_get_fs_full_size_info(struct cli_state *cli,
 425                                uint64_t *total_allocation_units,
 426                                uint64_t *caller_allocation_units,
 427                                uint64_t *actual_allocation_units,
 428                                uint64_t *sectors_per_allocation_unit,
 429                                uint64_t *bytes_per_sector)
 430 {
 431         bool ret = False;
 432         uint16 setup;
 433         char param[2];
 434         char *rparam=NULL, *rdata=NULL;
 435         unsigned int rparam_count=0, rdata_count=0;
 436
 437         setup = TRANSACT2_QFSINFO;
 438
 439         SSVAL(param,0,SMB_FS_FULL_SIZE_INFORMATION);
 440
 441         if (!cli_send_trans(cli, SMBtrans2,
 442                     NULL,
 443                     0, 0,
 444                     &setup, 1, 0,
 445                     param, 2, 0,
 446                     NULL, 0, 560)) {
 447                 goto cleanup;
 448         }
 449
 450         if (!cli_receive_trans(cli, SMBtrans2,
 451                               &rparam, &rparam_count,
 452                               &rdata, &rdata_count)) {
 453                 goto cleanup;
 454         }
 455
 456         if (cli_is_error(cli)) {
 457                 ret = False;
 458                 goto cleanup;
 459         } else {
 460                 ret = True;
 461         }
 462
 463         if (rdata_count != 32) {
 464                 goto cleanup;
 465         }
 466
 467         if (total_allocation_units) {
 468                 *total_allocation_units = BIG_UINT(rdata, 0);
 469         }
 470         if (caller_allocation_units) {
 471                 *caller_allocation_units = BIG_UINT(rdata,8);
 472         }
 473         if (actual_allocation_units) {
 474                 *actual_allocation_units = BIG_UINT(rdata,16);
 475         }
 476         if (sectors_per_allocation_unit) {
 477                 *sectors_per_allocation_unit = IVAL(rdata,24);
 478         }
 479         if (bytes_per_sector) {
 480                 *bytes_per_sector = IVAL(rdata,28);
 481         }
 482
 483 cleanup:
 484         SAFE_FREE(rparam);
 485         SAFE_FREE(rdata);
 486
 487         return ret;
 488 }
 489
 490 bool cli_get_posix_fs_info(struct cli_state *cli,
 491                            uint32 *optimal_transfer_size,
 492                            uint32 *block_size,
 493                            uint64_t *total_blocks,
 494                            uint64_t *blocks_available,
 495                            uint64_t *user_blocks_available,
 496                            uint64_t *total_file_nodes,
 497                            uint64_t *free_file_nodes,
 498                            uint64_t *fs_identifier)
 499 {
 500         bool ret = False;
 501         uint16 setup;
 502         char param[2];
 503         char *rparam=NULL, *rdata=NULL;
 504         unsigned int rparam_count=0, rdata_count=0;
 505
 506         setup = TRANSACT2_QFSINFO;
 507
 508         SSVAL(param,0,SMB_QUERY_POSIX_FS_INFO);
 509
 510         if (!cli_send_trans(cli, SMBtrans2,
 511                     NULL,
 512                     0, 0,
 513                     &setup, 1, 0,
 514                     param, 2, 0,
 515                     NULL, 0, 560)) {
 516                 goto cleanup;
 517         }
 518
 519         if (!cli_receive_trans(cli, SMBtrans2,
 520                               &rparam, &rparam_count,
 521                               &rdata, &rdata_count)) {
 522                 goto cleanup;
 523         }
 524
 525         if (cli_is_error(cli)) {
 526                 ret = False;
 527                 goto cleanup;
 528         } else {
 529                 ret = True;
 530         }
 531
 532         if (rdata_count != 56) {
 533                 goto cleanup;
 534         }
 535
 536         if (optimal_transfer_size) {
 537                 *optimal_transfer_size = IVAL(rdata, 0);
 538         }
 539         if (block_size) {
 540                 *block_size = IVAL(rdata,4);
 541         }
 542         if (total_blocks) {
 543                 *total_blocks = BIG_UINT(rdata,8);
 544         }
 545         if (blocks_available) {
 546                 *blocks_available = BIG_UINT(rdata,16);
 547         }
 548         if (user_blocks_available) {
 549                 *user_blocks_available = BIG_UINT(rdata,24);
 550         }
 551         if (total_file_nodes) {
 552                 *total_file_nodes = BIG_UINT(rdata,32);
 553         }
 554         if (free_file_nodes) {
 555                 *free_file_nodes = BIG_UINT(rdata,40);
 556         }
 557         if (fs_identifier) {
 558                 *fs_identifier = BIG_UINT(rdata,48);
 559         }
 560
 561 cleanup:
 562         SAFE_FREE(rparam);
 563         SAFE_FREE(rdata);
 564
 565         return ret;
 566 }
 567
 568
 569 /******************************************************************************
 570  Send/receive the request encryption blob.
 571 ******************************************************************************/
 572
 573 static NTSTATUS enc_blob_send_receive(struct cli_state *cli, DATA_BLOB *in, DATA_BLOB *out, DATA_BLOB *param_out)
 574 {
 575         uint16 setup;
 576         char param[4];
 577         char *rparam=NULL, *rdata=NULL;
 578         unsigned int rparam_count=0, rdata_count=0;
 579         NTSTATUS status = NT_STATUS_OK;
 580
 581         setup = TRANSACT2_SETFSINFO;
 582
 583         SSVAL(param,0,0);
 584         SSVAL(param,2,SMB_REQUEST_TRANSPORT_ENCRYPTION);
 585
 586         if (!cli_send_trans(cli, SMBtrans2,
 587                                 NULL,
 588                                 0, 0,
 589                                 &setup, 1, 0,
 590                                 param, 4, 0,
 591                                 (char *)in->data, in->length, CLI_BUFFER_SIZE)) {
 592                 status = cli_nt_error(cli);
 593                 goto out;
 594         }
 595
 596         if (!cli_receive_trans(cli, SMBtrans2,
 597                                 &rparam, &rparam_count,
 598                                 &rdata, &rdata_count)) {
 599                 status = cli_nt_error(cli);
 600                 goto out;
 601         }
 602
 603         if (cli_is_error(cli)) {
 604                 status = cli_nt_error(cli);
 605                 if (!NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
 606                         goto out;
 607                 }
 608         }
 609
 610         *out = data_blob(rdata, rdata_count);
 611         *param_out = data_blob(rparam, rparam_count);
 612
 613   out:
 614
 615         SAFE_FREE(rparam);
 616         SAFE_FREE(rdata);
 617         return status;
 618 }
 619
 620 /******************************************************************************
 621  Make a client state struct.
 622 ******************************************************************************/
 623
 624 static struct smb_trans_enc_state *make_cli_enc_state(enum smb_trans_enc_type smb_enc_type)
 625 {
 626         struct smb_trans_enc_state *es = NULL;
 627         es = SMB_MALLOC_P(struct smb_trans_enc_state);
 628         if (!es) {
 629                 return NULL;
 630         }
 631         ZERO_STRUCTP(es);
 632         es->smb_enc_type = smb_enc_type;
 633
 634 #if defined(HAVE_GSSAPI) && defined(HAVE_KRB5)
 635         if (smb_enc_type == SMB_TRANS_ENC_GSS) {
 636                 es->s.gss_state = SMB_MALLOC_P(struct smb_tran_enc_state_gss);
 637                 if (!es->s.gss_state) {
 638                         SAFE_FREE(es);
 639                         return NULL;
 640                 }
 641                 ZERO_STRUCTP(es->s.gss_state);
 642         }
 643 #endif
 644         return es;
 645 }
 646
 647 /******************************************************************************
 648  Start a raw ntlmssp encryption.
 649 ******************************************************************************/
 650
 651 NTSTATUS cli_raw_ntlm_smb_encryption_start(struct cli_state *cli,
 652                                 const char *user,
 653                                 const char *pass,
 654                                 const char *domain)
 655 {
 656         DATA_BLOB blob_in = data_blob_null;
 657         DATA_BLOB blob_out = data_blob_null;
 658         DATA_BLOB param_out = data_blob_null;
 659         NTSTATUS status = NT_STATUS_UNSUCCESSFUL;
 660         struct smb_trans_enc_state *es = make_cli_enc_state(SMB_TRANS_ENC_NTLM);
 661
 662         if (!es) {
 663                 return NT_STATUS_NO_MEMORY;
 664         }
 665         status = ntlmssp_client_start(&es->s.ntlmssp_state);
 666         if (!NT_STATUS_IS_OK(status)) {
 667                 goto fail;
 668         }
 669
 670         ntlmssp_want_feature(es->s.ntlmssp_state, NTLMSSP_FEATURE_SESSION_KEY);
 671         es->s.ntlmssp_state->neg_flags |= (NTLMSSP_NEGOTIATE_SIGN|NTLMSSP_NEGOTIATE_SEAL);
 672
 673         if (!NT_STATUS_IS_OK(status = ntlmssp_set_username(es->s.ntlmssp_state, user))) {
 674                 goto fail;
 675         }
 676         if (!NT_STATUS_IS_OK(status = ntlmssp_set_domain(es->s.ntlmssp_state, domain))) {
 677                 goto fail;
 678         }
 679         if (!NT_STATUS_IS_OK(status = ntlmssp_set_password(es->s.ntlmssp_state, pass))) {
 680                 goto fail;
 681         }
 682
 683         do {
 684                 status = ntlmssp_update(es->s.ntlmssp_state, blob_in, &blob_out);
 685                 data_blob_free(&blob_in);
 686                 data_blob_free(&param_out);
 687                 if (NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED) || NT_STATUS_IS_OK(status)) {
 688                         NTSTATUS trans_status = enc_blob_send_receive(cli,
 689                                                                         &blob_out,
 690                                                                         &blob_in,
 691                                                                         &param_out);
 692                         if (!NT_STATUS_EQUAL(trans_status,
 693                                         NT_STATUS_MORE_PROCESSING_REQUIRED) &&
 694                                         !NT_STATUS_IS_OK(trans_status)) {
 695                                 status = trans_status;
 696                         } else {
 697                                 if (param_out.length == 2) {
 698                                         es->enc_ctx_num = SVAL(param_out.data, 0);
 699                                 }
 700                         }
 701                 }
 702                 data_blob_free(&blob_out);
 703         } while (NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED));
 704
 705         data_blob_free(&blob_in);
 706
 707         if (NT_STATUS_IS_OK(status)) {
 708                 /* Replace the old state, if any. */
 709                 if (cli->trans_enc_state) {
 710                         common_free_encryption_state(&cli->trans_enc_state);
 711                 }
 712                 cli->trans_enc_state = es;
 713                 cli->trans_enc_state->enc_on = True;
 714                 es = NULL;
 715         }
 716
 717   fail:
 718
 719         common_free_encryption_state(&es);
 720         return status;
 721 }
 722
 723 #if defined(HAVE_GSSAPI) && defined(HAVE_KRB5)
 724
 725 #ifndef SMB_GSS_REQUIRED_FLAGS
 726 #define SMB_GSS_REQUIRED_FLAGS (GSS_C_CONF_FLAG|GSS_C_INTEG_FLAG|GSS_C_MUTUAL_FLAG|GSS_C_REPLAY_FLAG|GSS_C_SEQUENCE_FLAG)
 727 #endif
 728
 729 /******************************************************************************
 730  Get client gss blob to send to a server.
 731 ******************************************************************************/
 732
 733 static NTSTATUS make_cli_gss_blob(struct smb_trans_enc_state *es,
 734                                 const char *service,
 735                                 const char *host,
 736                                 NTSTATUS status_in,
 737                                 DATA_BLOB spnego_blob_in,
 738                                 DATA_BLOB *p_blob_out)
 739 {
 740         const char *krb_mechs[] = {OID_KERBEROS5, NULL};
 741         OM_uint32 ret;
 742         OM_uint32 min;
 743         gss_name_t srv_name;
 744         gss_buffer_desc input_name;
 745         gss_buffer_desc *p_tok_in;
 746         gss_buffer_desc tok_out, tok_in;
 747         DATA_BLOB blob_out = data_blob_null;
 748         DATA_BLOB blob_in = data_blob_null;
 749         char *host_princ_s = NULL;
 750         OM_uint32 ret_flags = 0;
 751         NTSTATUS status = NT_STATUS_OK;
 752
 753         gss_OID_desc nt_hostbased_service =
 754         {10, CONST_DISCARD(char *,"\x2a\x86\x48\x86\xf7\x12\x01\x02\x01\x04")};
 755
 756         memset(&tok_out, '\0', sizeof(tok_out));
 757
 758         /* Get a ticket for the service@host */
 759         if (asprintf(&host_princ_s, "%s@%s", service, host) == -1) {
 760                 return NT_STATUS_NO_MEMORY;
 761         }
 762
 763         input_name.value = host_princ_s;
 764         input_name.length = strlen(host_princ_s) + 1;
 765
 766         ret = gss_import_name(&min,
 767                                 &input_name,
 768                                 &nt_hostbased_service,
 769                                 &srv_name);
 770
 771         if (ret != GSS_S_COMPLETE) {
 772                 SAFE_FREE(host_princ_s);
 773                 return map_nt_error_from_gss(ret, min);
 774         }
 775
 776         if (spnego_blob_in.length == 0) {
 777                 p_tok_in = GSS_C_NO_BUFFER;
 778         } else {
 779                 /* Remove the SPNEGO wrapper */
 780                 if (!spnego_parse_auth_response(spnego_blob_in, status_in, OID_KERBEROS5, &blob_in)) {
 781                         status = NT_STATUS_UNSUCCESSFUL;
 782                         goto fail;
 783                 }
 784                 tok_in.value = blob_in.data;
 785                 tok_in.length = blob_in.length;
 786                 p_tok_in = &tok_in;
 787         }
 788
 789         ret = gss_init_sec_context(&min,
 790                                 GSS_C_NO_CREDENTIAL, /* Use our default cred. */
 791                                 &es->s.gss_state->gss_ctx,
 792                                 srv_name,
 793                                 GSS_C_NO_OID, /* default OID. */
 794                                 GSS_C_MUTUAL_FLAG | GSS_C_REPLAY_FLAG | GSS_C_SEQUENCE_FLAG | GSS_C_DELEG_FLAG,
 795                                 GSS_C_INDEFINITE,       /* requested ticket lifetime. */
 796                                 NULL,   /* no channel bindings */
 797                                 p_tok_in,
 798                                 NULL,   /* ignore mech type */
 799                                 &tok_out,
 800                                 &ret_flags,
 801                                 NULL);  /* ignore time_rec */
 802
 803         status = map_nt_error_from_gss(ret, min);
 804         if (!NT_STATUS_IS_OK(status) && !NT_STATUS_EQUAL(status,NT_STATUS_MORE_PROCESSING_REQUIRED)) {
 805                 ADS_STATUS adss = ADS_ERROR_GSS(ret, min);
 806                 DEBUG(10,("make_cli_gss_blob: gss_init_sec_context failed with %s\n",
 807                         ads_errstr(adss)));
 808                 goto fail;
 809         }
 810
 811         if ((ret_flags & SMB_GSS_REQUIRED_FLAGS) != SMB_GSS_REQUIRED_FLAGS) {
 812                 status = NT_STATUS_ACCESS_DENIED;
 813         }
 814
 815         blob_out = data_blob(tok_out.value, tok_out.length);
 816
 817         /* Wrap in an SPNEGO wrapper */
 818         *p_blob_out = gen_negTokenTarg(krb_mechs, blob_out);
 819
 820   fail:
 821
 822         data_blob_free(&blob_out);
 823         data_blob_free(&blob_in);
 824         SAFE_FREE(host_princ_s);
 825         gss_release_name(&min, &srv_name);
 826         if (tok_out.value) {
 827                 gss_release_buffer(&min, &tok_out);
 828         }
 829         return status;
 830 }
 831
 832 /******************************************************************************
 833  Start a SPNEGO gssapi encryption context.
 834 ******************************************************************************/
 835
 836 NTSTATUS cli_gss_smb_encryption_start(struct cli_state *cli)
 837 {
 838         DATA_BLOB blob_recv = data_blob_null;
 839         DATA_BLOB blob_send = data_blob_null;
 840         DATA_BLOB param_out = data_blob_null;
 841         NTSTATUS status = NT_STATUS_UNSUCCESSFUL;
 842         fstring fqdn;
 843         const char *servicename;
 844         struct smb_trans_enc_state *es = make_cli_enc_state(SMB_TRANS_ENC_GSS);
 845
 846         if (!es) {
 847                 return NT_STATUS_NO_MEMORY;
 848         }
 849
 850         name_to_fqdn(fqdn, cli->desthost);
 851         strlower_m(fqdn);
 852
 853         servicename = "cifs";
 854         status = make_cli_gss_blob(es, servicename, fqdn, NT_STATUS_OK, blob_recv, &blob_send);
 855         if (!NT_STATUS_EQUAL(status,NT_STATUS_MORE_PROCESSING_REQUIRED)) {
 856                 servicename = "host";
 857                 status = make_cli_gss_blob(es, servicename, fqdn, NT_STATUS_OK, blob_recv, &blob_send);
 858                 if (!NT_STATUS_EQUAL(status,NT_STATUS_MORE_PROCESSING_REQUIRED)) {
 859                         goto fail;
 860                 }
 861         }
 862
 863         do {
 864                 data_blob_free(&blob_recv);
 865                 status = enc_blob_send_receive(cli, &blob_send, &blob_recv, &param_out);
 866                 if (param_out.length == 2) {
 867                         es->enc_ctx_num = SVAL(param_out.data, 0);
 868                 }
 869                 data_blob_free(&blob_send);
 870                 status = make_cli_gss_blob(es, servicename, fqdn, status, blob_recv, &blob_send);
 871         } while (NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED));
 872         data_blob_free(&blob_recv);
 873
 874         if (NT_STATUS_IS_OK(status)) {
 875                 /* Replace the old state, if any. */
 876                 if (cli->trans_enc_state) {
 877                         common_free_encryption_state(&cli->trans_enc_state);
 878                 }
 879                 cli->trans_enc_state = es;
 880                 cli->trans_enc_state->enc_on = True;
 881                 es = NULL;
 882         }
 883
 884   fail:
 885
 886         common_free_encryption_state(&es);
 887         return status;
 888 }
 889 #else
 890 NTSTATUS cli_gss_smb_encryption_start(struct cli_state *cli)
 891 {
 892         return NT_STATUS_NOT_SUPPORTED;
 893 }
 894 #endif
 895
 896 /********************************************************************
 897  Ensure a connection is encrypted.
 898 ********************************************************************/
 899
 900 NTSTATUS cli_force_encryption(struct cli_state *c,
 901                         const char *username,
 902                         const char *password,
 903                         const char *domain)
 904 {
 905         uint16 major, minor;
 906         uint32 caplow, caphigh;
 907         NTSTATUS status;
 908
 909         if (!SERVER_HAS_UNIX_CIFS(c)) {
 910                 return NT_STATUS_NOT_SUPPORTED;
 911         }
 912
 913         status = cli_unix_extensions_version(c, &major, &minor, &caplow,
 914                                              &caphigh);
 915         if (!NT_STATUS_IS_OK(status)) {
 916                 DEBUG(10, ("cli_force_encryption: cli_unix_extensions_version "
 917                            "returned %s\n", nt_errstr(status)));
 918                 return NT_STATUS_UNKNOWN_REVISION;
 919         }
 920
 921         if (!(caplow & CIFS_UNIX_TRANSPORT_ENCRYPTION_CAP)) {
 922                 return NT_STATUS_UNSUPPORTED_COMPRESSION;
 923         }
 924
 925         if (c->use_kerberos) {
 926                 return cli_gss_smb_encryption_start(c);
 927         }
 928         return cli_raw_ntlm_smb_encryption_start(c,
 929                                         username,
 930                                         password,
 931                                         domain);
 932 }