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 NTSTATUS cli_get_fs_volume_info(struct cli_state *cli, fstring volume_name,
 352                                 uint32 *pserial_number, time_t *pdate)
 353 {
 354         NTSTATUS status;
 355         uint16 setup[1];
 356         uint8_t param[2];
 357         uint8_t *rdata;
 358         uint32_t rdata_count;
 359         unsigned int nlen;
 360
 361         SSVAL(setup, 0, TRANSACT2_QFSINFO);
 362         SSVAL(param,0,SMB_QUERY_FS_VOLUME_INFO);
 363
 364         status = cli_trans(talloc_tos(), cli, SMBtrans2,
 365                            NULL, 0, 0, 0,
 366                            setup, 1, 0,
 367                            param, 2, 0,
 368                            NULL, 0, 560,
 369                            NULL, 0, NULL,
 370                            NULL, 0, NULL,
 371                            &rdata, 10, &rdata_count);
 372         if (!NT_STATUS_IS_OK(status)) {
 373                 return status;
 374         }
 375
 376         if (pdate) {
 377                 struct timespec ts;
 378                 ts = interpret_long_date((char *)rdata);
 379                 *pdate = ts.tv_sec;
 380         }
 381         if (pserial_number) {
 382                 *pserial_number = IVAL(rdata,8);
 383         }
 384         nlen = IVAL(rdata,12);
 385         clistr_pull(cli->inbuf, volume_name, rdata + 18, sizeof(fstring),
 386                     nlen, STR_UNICODE);
 387
 388         /* todo: but not yet needed
 389          *       return the other stuff
 390          */
 391
 392         TALLOC_FREE(rdata);
 393         return NT_STATUS_OK;
 394 }
 395
 396 bool cli_get_fs_full_size_info(struct cli_state *cli,
 397                                uint64_t *total_allocation_units,
 398                                uint64_t *caller_allocation_units,
 399                                uint64_t *actual_allocation_units,
 400                                uint64_t *sectors_per_allocation_unit,
 401                                uint64_t *bytes_per_sector)
 402 {
 403         bool ret = False;
 404         uint16 setup;
 405         char param[2];
 406         char *rparam=NULL, *rdata=NULL;
 407         unsigned int rparam_count=0, rdata_count=0;
 408
 409         setup = TRANSACT2_QFSINFO;
 410
 411         SSVAL(param,0,SMB_FS_FULL_SIZE_INFORMATION);
 412
 413         if (!cli_send_trans(cli, SMBtrans2,
 414                     NULL,
 415                     0, 0,
 416                     &setup, 1, 0,
 417                     param, 2, 0,
 418                     NULL, 0, 560)) {
 419                 goto cleanup;
 420         }
 421
 422         if (!cli_receive_trans(cli, SMBtrans2,
 423                               &rparam, &rparam_count,
 424                               &rdata, &rdata_count)) {
 425                 goto cleanup;
 426         }
 427
 428         if (cli_is_error(cli)) {
 429                 ret = False;
 430                 goto cleanup;
 431         } else {
 432                 ret = True;
 433         }
 434
 435         if (rdata_count != 32) {
 436                 goto cleanup;
 437         }
 438
 439         if (total_allocation_units) {
 440                 *total_allocation_units = BIG_UINT(rdata, 0);
 441         }
 442         if (caller_allocation_units) {
 443                 *caller_allocation_units = BIG_UINT(rdata,8);
 444         }
 445         if (actual_allocation_units) {
 446                 *actual_allocation_units = BIG_UINT(rdata,16);
 447         }
 448         if (sectors_per_allocation_unit) {
 449                 *sectors_per_allocation_unit = IVAL(rdata,24);
 450         }
 451         if (bytes_per_sector) {
 452                 *bytes_per_sector = IVAL(rdata,28);
 453         }
 454
 455 cleanup:
 456         SAFE_FREE(rparam);
 457         SAFE_FREE(rdata);
 458
 459         return ret;
 460 }
 461
 462 bool cli_get_posix_fs_info(struct cli_state *cli,
 463                            uint32 *optimal_transfer_size,
 464                            uint32 *block_size,
 465                            uint64_t *total_blocks,
 466                            uint64_t *blocks_available,
 467                            uint64_t *user_blocks_available,
 468                            uint64_t *total_file_nodes,
 469                            uint64_t *free_file_nodes,
 470                            uint64_t *fs_identifier)
 471 {
 472         bool ret = False;
 473         uint16 setup;
 474         char param[2];
 475         char *rparam=NULL, *rdata=NULL;
 476         unsigned int rparam_count=0, rdata_count=0;
 477
 478         setup = TRANSACT2_QFSINFO;
 479
 480         SSVAL(param,0,SMB_QUERY_POSIX_FS_INFO);
 481
 482         if (!cli_send_trans(cli, SMBtrans2,
 483                     NULL,
 484                     0, 0,
 485                     &setup, 1, 0,
 486                     param, 2, 0,
 487                     NULL, 0, 560)) {
 488                 goto cleanup;
 489         }
 490
 491         if (!cli_receive_trans(cli, SMBtrans2,
 492                               &rparam, &rparam_count,
 493                               &rdata, &rdata_count)) {
 494                 goto cleanup;
 495         }
 496
 497         if (cli_is_error(cli)) {
 498                 ret = False;
 499                 goto cleanup;
 500         } else {
 501                 ret = True;
 502         }
 503
 504         if (rdata_count != 56) {
 505                 goto cleanup;
 506         }
 507
 508         if (optimal_transfer_size) {
 509                 *optimal_transfer_size = IVAL(rdata, 0);
 510         }
 511         if (block_size) {
 512                 *block_size = IVAL(rdata,4);
 513         }
 514         if (total_blocks) {
 515                 *total_blocks = BIG_UINT(rdata,8);
 516         }
 517         if (blocks_available) {
 518                 *blocks_available = BIG_UINT(rdata,16);
 519         }
 520         if (user_blocks_available) {
 521                 *user_blocks_available = BIG_UINT(rdata,24);
 522         }
 523         if (total_file_nodes) {
 524                 *total_file_nodes = BIG_UINT(rdata,32);
 525         }
 526         if (free_file_nodes) {
 527                 *free_file_nodes = BIG_UINT(rdata,40);
 528         }
 529         if (fs_identifier) {
 530                 *fs_identifier = BIG_UINT(rdata,48);
 531         }
 532
 533 cleanup:
 534         SAFE_FREE(rparam);
 535         SAFE_FREE(rdata);
 536
 537         return ret;
 538 }
 539
 540
 541 /******************************************************************************
 542  Send/receive the request encryption blob.
 543 ******************************************************************************/
 544
 545 static NTSTATUS enc_blob_send_receive(struct cli_state *cli, DATA_BLOB *in, DATA_BLOB *out, DATA_BLOB *param_out)
 546 {
 547         uint16 setup;
 548         char param[4];
 549         char *rparam=NULL, *rdata=NULL;
 550         unsigned int rparam_count=0, rdata_count=0;
 551         NTSTATUS status = NT_STATUS_OK;
 552
 553         setup = TRANSACT2_SETFSINFO;
 554
 555         SSVAL(param,0,0);
 556         SSVAL(param,2,SMB_REQUEST_TRANSPORT_ENCRYPTION);
 557
 558         if (!cli_send_trans(cli, SMBtrans2,
 559                                 NULL,
 560                                 0, 0,
 561                                 &setup, 1, 0,
 562                                 param, 4, 0,
 563                                 (char *)in->data, in->length, CLI_BUFFER_SIZE)) {
 564                 status = cli_nt_error(cli);
 565                 goto out;
 566         }
 567
 568         if (!cli_receive_trans(cli, SMBtrans2,
 569                                 &rparam, &rparam_count,
 570                                 &rdata, &rdata_count)) {
 571                 status = cli_nt_error(cli);
 572                 goto out;
 573         }
 574
 575         if (cli_is_error(cli)) {
 576                 status = cli_nt_error(cli);
 577                 if (!NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
 578                         goto out;
 579                 }
 580         }
 581
 582         *out = data_blob(rdata, rdata_count);
 583         *param_out = data_blob(rparam, rparam_count);
 584
 585   out:
 586
 587         SAFE_FREE(rparam);
 588         SAFE_FREE(rdata);
 589         return status;
 590 }
 591
 592 /******************************************************************************
 593  Make a client state struct.
 594 ******************************************************************************/
 595
 596 static struct smb_trans_enc_state *make_cli_enc_state(enum smb_trans_enc_type smb_enc_type)
 597 {
 598         struct smb_trans_enc_state *es = NULL;
 599         es = SMB_MALLOC_P(struct smb_trans_enc_state);
 600         if (!es) {
 601                 return NULL;
 602         }
 603         ZERO_STRUCTP(es);
 604         es->smb_enc_type = smb_enc_type;
 605
 606 #if defined(HAVE_GSSAPI) && defined(HAVE_KRB5)
 607         if (smb_enc_type == SMB_TRANS_ENC_GSS) {
 608                 es->s.gss_state = SMB_MALLOC_P(struct smb_tran_enc_state_gss);
 609                 if (!es->s.gss_state) {
 610                         SAFE_FREE(es);
 611                         return NULL;
 612                 }
 613                 ZERO_STRUCTP(es->s.gss_state);
 614         }
 615 #endif
 616         return es;
 617 }
 618
 619 /******************************************************************************
 620  Start a raw ntlmssp encryption.
 621 ******************************************************************************/
 622
 623 NTSTATUS cli_raw_ntlm_smb_encryption_start(struct cli_state *cli,
 624                                 const char *user,
 625                                 const char *pass,
 626                                 const char *domain)
 627 {
 628         DATA_BLOB blob_in = data_blob_null;
 629         DATA_BLOB blob_out = data_blob_null;
 630         DATA_BLOB param_out = data_blob_null;
 631         NTSTATUS status = NT_STATUS_UNSUCCESSFUL;
 632         struct smb_trans_enc_state *es = make_cli_enc_state(SMB_TRANS_ENC_NTLM);
 633
 634         if (!es) {
 635                 return NT_STATUS_NO_MEMORY;
 636         }
 637         status = ntlmssp_client_start(&es->s.ntlmssp_state);
 638         if (!NT_STATUS_IS_OK(status)) {
 639                 goto fail;
 640         }
 641
 642         ntlmssp_want_feature(es->s.ntlmssp_state, NTLMSSP_FEATURE_SESSION_KEY);
 643         es->s.ntlmssp_state->neg_flags |= (NTLMSSP_NEGOTIATE_SIGN|NTLMSSP_NEGOTIATE_SEAL);
 644
 645         if (!NT_STATUS_IS_OK(status = ntlmssp_set_username(es->s.ntlmssp_state, user))) {
 646                 goto fail;
 647         }
 648         if (!NT_STATUS_IS_OK(status = ntlmssp_set_domain(es->s.ntlmssp_state, domain))) {
 649                 goto fail;
 650         }
 651         if (!NT_STATUS_IS_OK(status = ntlmssp_set_password(es->s.ntlmssp_state, pass))) {
 652                 goto fail;
 653         }
 654
 655         do {
 656                 status = ntlmssp_update(es->s.ntlmssp_state, blob_in, &blob_out);
 657                 data_blob_free(&blob_in);
 658                 data_blob_free(&param_out);
 659                 if (NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED) || NT_STATUS_IS_OK(status)) {
 660                         NTSTATUS trans_status = enc_blob_send_receive(cli,
 661                                                                         &blob_out,
 662                                                                         &blob_in,
 663                                                                         &param_out);
 664                         if (!NT_STATUS_EQUAL(trans_status,
 665                                         NT_STATUS_MORE_PROCESSING_REQUIRED) &&
 666                                         !NT_STATUS_IS_OK(trans_status)) {
 667                                 status = trans_status;
 668                         } else {
 669                                 if (param_out.length == 2) {
 670                                         es->enc_ctx_num = SVAL(param_out.data, 0);
 671                                 }
 672                         }
 673                 }
 674                 data_blob_free(&blob_out);
 675         } while (NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED));
 676
 677         data_blob_free(&blob_in);
 678
 679         if (NT_STATUS_IS_OK(status)) {
 680                 /* Replace the old state, if any. */
 681                 if (cli->trans_enc_state) {
 682                         common_free_encryption_state(&cli->trans_enc_state);
 683                 }
 684                 cli->trans_enc_state = es;
 685                 cli->trans_enc_state->enc_on = True;
 686                 es = NULL;
 687         }
 688
 689   fail:
 690
 691         common_free_encryption_state(&es);
 692         return status;
 693 }
 694
 695 #if defined(HAVE_GSSAPI) && defined(HAVE_KRB5)
 696
 697 #ifndef SMB_GSS_REQUIRED_FLAGS
 698 #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)
 699 #endif
 700
 701 /******************************************************************************
 702  Get client gss blob to send to a server.
 703 ******************************************************************************/
 704
 705 static NTSTATUS make_cli_gss_blob(struct smb_trans_enc_state *es,
 706                                 const char *service,
 707                                 const char *host,
 708                                 NTSTATUS status_in,
 709                                 DATA_BLOB spnego_blob_in,
 710                                 DATA_BLOB *p_blob_out)
 711 {
 712         const char *krb_mechs[] = {OID_KERBEROS5, NULL};
 713         OM_uint32 ret;
 714         OM_uint32 min;
 715         gss_name_t srv_name;
 716         gss_buffer_desc input_name;
 717         gss_buffer_desc *p_tok_in;
 718         gss_buffer_desc tok_out, tok_in;
 719         DATA_BLOB blob_out = data_blob_null;
 720         DATA_BLOB blob_in = data_blob_null;
 721         char *host_princ_s = NULL;
 722         OM_uint32 ret_flags = 0;
 723         NTSTATUS status = NT_STATUS_OK;
 724
 725         gss_OID_desc nt_hostbased_service =
 726         {10, CONST_DISCARD(char *,"\x2a\x86\x48\x86\xf7\x12\x01\x02\x01\x04")};
 727
 728         memset(&tok_out, '\0', sizeof(tok_out));
 729
 730         /* Get a ticket for the service@host */
 731         if (asprintf(&host_princ_s, "%s@%s", service, host) == -1) {
 732                 return NT_STATUS_NO_MEMORY;
 733         }
 734
 735         input_name.value = host_princ_s;
 736         input_name.length = strlen(host_princ_s) + 1;
 737
 738         ret = gss_import_name(&min,
 739                                 &input_name,
 740                                 &nt_hostbased_service,
 741                                 &srv_name);
 742
 743         if (ret != GSS_S_COMPLETE) {
 744                 SAFE_FREE(host_princ_s);
 745                 return map_nt_error_from_gss(ret, min);
 746         }
 747
 748         if (spnego_blob_in.length == 0) {
 749                 p_tok_in = GSS_C_NO_BUFFER;
 750         } else {
 751                 /* Remove the SPNEGO wrapper */
 752                 if (!spnego_parse_auth_response(spnego_blob_in, status_in, OID_KERBEROS5, &blob_in)) {
 753                         status = NT_STATUS_UNSUCCESSFUL;
 754                         goto fail;
 755                 }
 756                 tok_in.value = blob_in.data;
 757                 tok_in.length = blob_in.length;
 758                 p_tok_in = &tok_in;
 759         }
 760
 761         ret = gss_init_sec_context(&min,
 762                                 GSS_C_NO_CREDENTIAL, /* Use our default cred. */
 763                                 &es->s.gss_state->gss_ctx,
 764                                 srv_name,
 765                                 GSS_C_NO_OID, /* default OID. */
 766                                 GSS_C_MUTUAL_FLAG | GSS_C_REPLAY_FLAG | GSS_C_SEQUENCE_FLAG | GSS_C_DELEG_FLAG,
 767                                 GSS_C_INDEFINITE,       /* requested ticket lifetime. */
 768                                 NULL,   /* no channel bindings */
 769                                 p_tok_in,
 770                                 NULL,   /* ignore mech type */
 771                                 &tok_out,
 772                                 &ret_flags,
 773                                 NULL);  /* ignore time_rec */
 774
 775         status = map_nt_error_from_gss(ret, min);
 776         if (!NT_STATUS_IS_OK(status) && !NT_STATUS_EQUAL(status,NT_STATUS_MORE_PROCESSING_REQUIRED)) {
 777                 ADS_STATUS adss = ADS_ERROR_GSS(ret, min);
 778                 DEBUG(10,("make_cli_gss_blob: gss_init_sec_context failed with %s\n",
 779                         ads_errstr(adss)));
 780                 goto fail;
 781         }
 782
 783         if ((ret_flags & SMB_GSS_REQUIRED_FLAGS) != SMB_GSS_REQUIRED_FLAGS) {
 784                 status = NT_STATUS_ACCESS_DENIED;
 785         }
 786
 787         blob_out = data_blob(tok_out.value, tok_out.length);
 788
 789         /* Wrap in an SPNEGO wrapper */
 790         *p_blob_out = gen_negTokenTarg(krb_mechs, blob_out);
 791
 792   fail:
 793
 794         data_blob_free(&blob_out);
 795         data_blob_free(&blob_in);
 796         SAFE_FREE(host_princ_s);
 797         gss_release_name(&min, &srv_name);
 798         if (tok_out.value) {
 799                 gss_release_buffer(&min, &tok_out);
 800         }
 801         return status;
 802 }
 803
 804 /******************************************************************************
 805  Start a SPNEGO gssapi encryption context.
 806 ******************************************************************************/
 807
 808 NTSTATUS cli_gss_smb_encryption_start(struct cli_state *cli)
 809 {
 810         DATA_BLOB blob_recv = data_blob_null;
 811         DATA_BLOB blob_send = data_blob_null;
 812         DATA_BLOB param_out = data_blob_null;
 813         NTSTATUS status = NT_STATUS_UNSUCCESSFUL;
 814         fstring fqdn;
 815         const char *servicename;
 816         struct smb_trans_enc_state *es = make_cli_enc_state(SMB_TRANS_ENC_GSS);
 817
 818         if (!es) {
 819                 return NT_STATUS_NO_MEMORY;
 820         }
 821
 822         name_to_fqdn(fqdn, cli->desthost);
 823         strlower_m(fqdn);
 824
 825         servicename = "cifs";
 826         status = make_cli_gss_blob(es, servicename, fqdn, NT_STATUS_OK, blob_recv, &blob_send);
 827         if (!NT_STATUS_EQUAL(status,NT_STATUS_MORE_PROCESSING_REQUIRED)) {
 828                 servicename = "host";
 829                 status = make_cli_gss_blob(es, servicename, fqdn, NT_STATUS_OK, blob_recv, &blob_send);
 830                 if (!NT_STATUS_EQUAL(status,NT_STATUS_MORE_PROCESSING_REQUIRED)) {
 831                         goto fail;
 832                 }
 833         }
 834
 835         do {
 836                 data_blob_free(&blob_recv);
 837                 status = enc_blob_send_receive(cli, &blob_send, &blob_recv, &param_out);
 838                 if (param_out.length == 2) {
 839                         es->enc_ctx_num = SVAL(param_out.data, 0);
 840                 }
 841                 data_blob_free(&blob_send);
 842                 status = make_cli_gss_blob(es, servicename, fqdn, status, blob_recv, &blob_send);
 843         } while (NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED));
 844         data_blob_free(&blob_recv);
 845
 846         if (NT_STATUS_IS_OK(status)) {
 847                 /* Replace the old state, if any. */
 848                 if (cli->trans_enc_state) {
 849                         common_free_encryption_state(&cli->trans_enc_state);
 850                 }
 851                 cli->trans_enc_state = es;
 852                 cli->trans_enc_state->enc_on = True;
 853                 es = NULL;
 854         }
 855
 856   fail:
 857
 858         common_free_encryption_state(&es);
 859         return status;
 860 }
 861 #else
 862 NTSTATUS cli_gss_smb_encryption_start(struct cli_state *cli)
 863 {
 864         return NT_STATUS_NOT_SUPPORTED;
 865 }
 866 #endif
 867
 868 /********************************************************************
 869  Ensure a connection is encrypted.
 870 ********************************************************************/
 871
 872 NTSTATUS cli_force_encryption(struct cli_state *c,
 873                         const char *username,
 874                         const char *password,
 875                         const char *domain)
 876 {
 877         uint16 major, minor;
 878         uint32 caplow, caphigh;
 879         NTSTATUS status;
 880
 881         if (!SERVER_HAS_UNIX_CIFS(c)) {
 882                 return NT_STATUS_NOT_SUPPORTED;
 883         }
 884
 885         status = cli_unix_extensions_version(c, &major, &minor, &caplow,
 886                                              &caphigh);
 887         if (!NT_STATUS_IS_OK(status)) {
 888                 DEBUG(10, ("cli_force_encryption: cli_unix_extensions_version "
 889                            "returned %s\n", nt_errstr(status)));
 890                 return NT_STATUS_UNKNOWN_REVISION;
 891         }
 892
 893         if (!(caplow & CIFS_UNIX_TRANSPORT_ENCRYPTION_CAP)) {
 894                 return NT_STATUS_UNSUPPORTED_COMPRESSION;
 895         }
 896
 897         if (c->use_kerberos) {
 898                 return cli_gss_smb_encryption_start(c);
 899         }
 900         return cli_raw_ntlm_smb_encryption_start(c,
 901                                         username,
 902                                         password,
 903                                         domain);
 904 }