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