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 "libsmb/libsmb.h"
  23 #include "../libcli/auth/spnego.h"
  24 #include "../libcli/auth/ntlmssp.h"
  25 #include "../lib/util/tevent_ntstatus.h"
  26 #include "async_smb.h"
  27 #include "smb_crypt.h"
  28 #include "trans2.h"
  29
  30 /****************************************************************************
  31  Get UNIX extensions version info.
  32 ****************************************************************************/
  33
  34 struct cli_unix_extensions_version_state {
  35         struct cli_state *cli;
  36         uint16_t setup[1];
  37         uint8_t param[2];
  38         uint16_t major, minor;
  39         uint32_t caplow, caphigh;
  40 };
  41
  42 static void cli_unix_extensions_version_done(struct tevent_req *subreq);
  43
  44 struct tevent_req *cli_unix_extensions_version_send(TALLOC_CTX *mem_ctx,
  45                                                     struct tevent_context *ev,
  46                                                     struct cli_state *cli)
  47 {
  48         struct tevent_req *req, *subreq;
  49         struct cli_unix_extensions_version_state *state;
  50
  51         req = tevent_req_create(mem_ctx, &state,
  52                                 struct cli_unix_extensions_version_state);
  53         if (req == NULL) {
  54                 return NULL;
  55         }
  56         state->cli = cli;
  57         SSVAL(state->setup, 0, TRANSACT2_QFSINFO);
  58         SSVAL(state->param, 0, SMB_QUERY_CIFS_UNIX_INFO);
  59
  60         subreq = cli_trans_send(state, ev, cli, SMBtrans2,
  61                                 NULL, 0, 0, 0,
  62                                 state->setup, 1, 0,
  63                                 state->param, 2, 0,
  64                                 NULL, 0, 560);
  65         if (tevent_req_nomem(subreq, req)) {
  66                 return tevent_req_post(req, ev);
  67         }
  68         tevent_req_set_callback(subreq, cli_unix_extensions_version_done, req);
  69         return req;
  70 }
  71
  72 static void cli_unix_extensions_version_done(struct tevent_req *subreq)
  73 {
  74         struct tevent_req *req = tevent_req_callback_data(
  75                 subreq, struct tevent_req);
  76         struct cli_unix_extensions_version_state *state = tevent_req_data(
  77                 req, struct cli_unix_extensions_version_state);
  78         uint8_t *data;
  79         uint32_t num_data;
  80         NTSTATUS status;
  81
  82         status = cli_trans_recv(subreq, state, NULL, NULL, 0, NULL,
  83                                 NULL, 0, NULL, &data, 12, &num_data);
  84         TALLOC_FREE(subreq);
  85         if (!NT_STATUS_IS_OK(status)) {
  86                 tevent_req_nterror(req, status);
  87                 return;
  88         }
  89
  90         state->major = SVAL(data, 0);
  91         state->minor = SVAL(data, 2);
  92         state->caplow = IVAL(data, 4);
  93         state->caphigh = IVAL(data, 8);
  94         TALLOC_FREE(data);
  95         tevent_req_done(req);
  96 }
  97
  98 NTSTATUS cli_unix_extensions_version_recv(struct tevent_req *req,
  99                                           uint16_t *pmajor, uint16_t *pminor,
 100                                           uint32_t *pcaplow,
 101                                           uint32_t *pcaphigh)
 102 {
 103         struct cli_unix_extensions_version_state *state = tevent_req_data(
 104                 req, struct cli_unix_extensions_version_state);
 105         NTSTATUS status;
 106
 107         if (tevent_req_is_nterror(req, &status)) {
 108                 return status;
 109         }
 110         *pmajor = state->major;
 111         *pminor = state->minor;
 112         *pcaplow = state->caplow;
 113         *pcaphigh = state->caphigh;
 114         state->cli->server_posix_capabilities = *pcaplow;
 115         return NT_STATUS_OK;
 116 }
 117
 118 NTSTATUS cli_unix_extensions_version(struct cli_state *cli, uint16 *pmajor,
 119                                      uint16 *pminor, uint32 *pcaplow,
 120                                      uint32 *pcaphigh)
 121 {
 122         TALLOC_CTX *frame = talloc_stackframe();
 123         struct event_context *ev;
 124         struct tevent_req *req;
 125         NTSTATUS status = NT_STATUS_OK;
 126
 127         if (cli_has_async_calls(cli)) {
 128                 /*
 129                  * Can't use sync call while an async call is in flight
 130                  */
 131                 status = NT_STATUS_INVALID_PARAMETER;
 132                 goto fail;
 133         }
 134
 135         ev = event_context_init(frame);
 136         if (ev == NULL) {
 137                 status = NT_STATUS_NO_MEMORY;
 138                 goto fail;
 139         }
 140
 141         req = cli_unix_extensions_version_send(frame, ev, cli);
 142         if (req == NULL) {
 143                 status = NT_STATUS_NO_MEMORY;
 144                 goto fail;
 145         }
 146
 147         if (!tevent_req_poll(req, ev)) {
 148                 status = map_nt_error_from_unix(errno);
 149                 goto fail;
 150         }
 151
 152         status = cli_unix_extensions_version_recv(req, pmajor, pminor, pcaplow,
 153                                                   pcaphigh);
 154  fail:
 155         TALLOC_FREE(frame);
 156         return status;
 157 }
 158
 159 /****************************************************************************
 160  Set UNIX extensions capabilities.
 161 ****************************************************************************/
 162
 163 struct cli_set_unix_extensions_capabilities_state {
 164         struct cli_state *cli;
 165         uint16_t setup[1];
 166         uint8_t param[4];
 167         uint8_t data[12];
 168 };
 169
 170 static void cli_set_unix_extensions_capabilities_done(
 171         struct tevent_req *subreq);
 172
 173 struct tevent_req *cli_set_unix_extensions_capabilities_send(
 174         TALLOC_CTX *mem_ctx, struct tevent_context *ev, struct cli_state *cli,
 175         uint16_t major, uint16_t minor, uint32_t caplow, uint32_t caphigh)
 176 {
 177         struct tevent_req *req, *subreq;
 178         struct cli_set_unix_extensions_capabilities_state *state;
 179
 180         req = tevent_req_create(
 181                 mem_ctx, &state,
 182                 struct cli_set_unix_extensions_capabilities_state);
 183         if (req == NULL) {
 184                 return NULL;
 185         }
 186
 187         state->cli = cli;
 188         SSVAL(state->setup+0, 0, TRANSACT2_SETFSINFO);
 189
 190         SSVAL(state->param, 0, 0);
 191         SSVAL(state->param, 2, SMB_SET_CIFS_UNIX_INFO);
 192
 193         SSVAL(state->data, 0, major);
 194         SSVAL(state->data, 2, minor);
 195         SIVAL(state->data, 4, caplow);
 196         SIVAL(state->data, 8, caphigh);
 197
 198         subreq = cli_trans_send(state, ev, cli, SMBtrans2,
 199                                 NULL, 0, 0, 0,
 200                                 state->setup, 1, 0,
 201                                 state->param, 4, 0,
 202                                 state->data, 12, 560);
 203         if (tevent_req_nomem(subreq, req)) {
 204                 return tevent_req_post(req, ev);
 205         }
 206         tevent_req_set_callback(
 207                 subreq, cli_set_unix_extensions_capabilities_done, req);
 208         return req;
 209 }
 210
 211 static void cli_set_unix_extensions_capabilities_done(
 212         struct tevent_req *subreq)
 213 {
 214         struct tevent_req *req = tevent_req_callback_data(
 215                 subreq, struct tevent_req);
 216         struct cli_set_unix_extensions_capabilities_state *state = tevent_req_data(
 217                 req, struct cli_set_unix_extensions_capabilities_state);
 218
 219         NTSTATUS status = cli_trans_recv(subreq, NULL, NULL, NULL, 0, NULL,
 220                                          NULL, 0, NULL, NULL, 0, NULL);
 221         if (NT_STATUS_IS_OK(status)) {
 222                 state->cli->requested_posix_capabilities = IVAL(state->data, 4);
 223         }
 224         tevent_req_simple_finish_ntstatus(subreq, status);
 225 }
 226
 227 NTSTATUS cli_set_unix_extensions_capabilities_recv(struct tevent_req *req)
 228 {
 229         return tevent_req_simple_recv_ntstatus(req);
 230 }
 231
 232 NTSTATUS cli_set_unix_extensions_capabilities(struct cli_state *cli,
 233                                               uint16 major, uint16 minor,
 234                                               uint32 caplow, uint32 caphigh)
 235 {
 236         struct tevent_context *ev;
 237         struct tevent_req *req;
 238         NTSTATUS status = NT_STATUS_NO_MEMORY;
 239
 240         if (cli_has_async_calls(cli)) {
 241                 return NT_STATUS_INVALID_PARAMETER;
 242         }
 243         ev = tevent_context_init(talloc_tos());
 244         if (ev == NULL) {
 245                 goto fail;
 246         }
 247         req = cli_set_unix_extensions_capabilities_send(
 248                 ev, ev, cli, major, minor, caplow, caphigh);
 249         if (req == NULL) {
 250                 goto fail;
 251         }
 252         if (!tevent_req_poll_ntstatus(req, ev, &status)) {
 253                 goto fail;
 254         }
 255         status = cli_set_unix_extensions_capabilities_recv(req);
 256 fail:
 257         TALLOC_FREE(ev);
 258         return status;
 259 }
 260
 261 struct cli_get_fs_attr_info_state {
 262         uint16_t setup[1];
 263         uint8_t param[2];
 264         uint32_t fs_attr;
 265 };
 266
 267 static void cli_get_fs_attr_info_done(struct tevent_req *subreq);
 268
 269 struct tevent_req *cli_get_fs_attr_info_send(TALLOC_CTX *mem_ctx,
 270                                              struct tevent_context *ev,
 271                                              struct cli_state *cli)
 272 {
 273         struct tevent_req *subreq, *req;
 274         struct cli_get_fs_attr_info_state *state;
 275
 276         req = tevent_req_create(mem_ctx, &state,
 277                                 struct cli_get_fs_attr_info_state);
 278         if (req == NULL) {
 279                 return NULL;
 280         }
 281         SSVAL(state->setup+0, 0, TRANSACT2_QFSINFO);
 282         SSVAL(state->param+0, 0, SMB_QUERY_FS_ATTRIBUTE_INFO);
 283
 284         subreq = cli_trans_send(state, ev, cli, SMBtrans2,
 285                                 NULL, 0, 0, 0,
 286                                 state->setup, 1, 0,
 287                                 state->param, 2, 0,
 288                                 NULL, 0, 560);
 289         if (tevent_req_nomem(subreq, req)) {
 290                 return tevent_req_post(req, ev);
 291         }
 292         tevent_req_set_callback(subreq, cli_get_fs_attr_info_done, req);
 293         return req;
 294 }
 295
 296 static void cli_get_fs_attr_info_done(struct tevent_req *subreq)
 297 {
 298         struct tevent_req *req = tevent_req_callback_data(
 299                 subreq, struct tevent_req);
 300         struct cli_get_fs_attr_info_state *state = tevent_req_data(
 301                 req, struct cli_get_fs_attr_info_state);
 302         uint8_t *data;
 303         uint32_t num_data;
 304         NTSTATUS status;
 305
 306         status = cli_trans_recv(subreq, talloc_tos(), NULL, NULL, 0, NULL,
 307                                 NULL, 0, NULL, &data, 12, &num_data);
 308         TALLOC_FREE(subreq);
 309         if (!NT_STATUS_IS_OK(status)) {
 310                 tevent_req_nterror(req, status);
 311                 return;
 312         }
 313         state->fs_attr = IVAL(data, 0);
 314         TALLOC_FREE(data);
 315         tevent_req_done(req);
 316 }
 317
 318 NTSTATUS cli_get_fs_attr_info_recv(struct tevent_req *req, uint32_t *fs_attr)
 319 {
 320         struct cli_get_fs_attr_info_state *state = tevent_req_data(
 321                 req, struct cli_get_fs_attr_info_state);
 322         NTSTATUS status;
 323
 324         if (tevent_req_is_nterror(req, &status)) {
 325                 return status;
 326         }
 327         *fs_attr = state->fs_attr;
 328         return NT_STATUS_OK;
 329 }
 330
 331 NTSTATUS cli_get_fs_attr_info(struct cli_state *cli, uint32_t *fs_attr)
 332 {
 333         struct tevent_context *ev;
 334         struct tevent_req *req;
 335         NTSTATUS status = NT_STATUS_NO_MEMORY;
 336
 337         if (cli_has_async_calls(cli)) {
 338                 return NT_STATUS_INVALID_PARAMETER;
 339         }
 340         ev = tevent_context_init(talloc_tos());
 341         if (ev == NULL) {
 342                 goto fail;
 343         }
 344         req = cli_get_fs_attr_info_send(ev, ev, cli);
 345         if (req == NULL) {
 346                 goto fail;
 347         }
 348         if (!tevent_req_poll_ntstatus(req, ev, &status)) {
 349                 goto fail;
 350         }
 351         status = cli_get_fs_attr_info_recv(req, fs_attr);
 352 fail:
 353         TALLOC_FREE(ev);
 354         return status;
 355 }
 356
 357 NTSTATUS cli_get_fs_volume_info(struct cli_state *cli,
 358                                 TALLOC_CTX *mem_ctx,
 359                                 char **_volume_name,
 360                                 uint32_t *pserial_number,
 361                                 time_t *pdate)
 362 {
 363         NTSTATUS status;
 364         uint16_t recv_flags2;
 365         uint16_t setup[1];
 366         uint8_t param[2];
 367         uint8_t *rdata;
 368         uint32_t rdata_count;
 369         unsigned int nlen;
 370         char *volume_name = NULL;
 371
 372         SSVAL(setup, 0, TRANSACT2_QFSINFO);
 373         SSVAL(param,0,SMB_QUERY_FS_VOLUME_INFO);
 374
 375         status = cli_trans(talloc_tos(), cli, SMBtrans2,
 376                            NULL, 0, 0, 0,
 377                            setup, 1, 0,
 378                            param, 2, 0,
 379                            NULL, 0, 560,
 380                            &recv_flags2,
 381                            NULL, 0, NULL,
 382                            NULL, 0, NULL,
 383                            &rdata, 18, &rdata_count);
 384         if (!NT_STATUS_IS_OK(status)) {
 385                 return status;
 386         }
 387
 388         if (pdate) {
 389                 struct timespec ts;
 390                 ts = interpret_long_date((char *)rdata);
 391                 *pdate = ts.tv_sec;
 392         }
 393         if (pserial_number) {
 394                 *pserial_number = IVAL(rdata,8);
 395         }
 396         nlen = IVAL(rdata,12);
 397         if (nlen > (rdata_count - 18)) {
 398                 TALLOC_FREE(rdata);
 399                 return NT_STATUS_INVALID_NETWORK_RESPONSE;
 400         }
 401
 402         clistr_pull_talloc(mem_ctx,
 403                            (const char *)rdata,
 404                            recv_flags2,
 405                            &volume_name,
 406                            rdata + 18,
 407                            nlen, STR_UNICODE);
 408         if (volume_name == NULL) {
 409                 status = map_nt_error_from_unix(errno);
 410                 TALLOC_FREE(rdata);
 411                 return status;
 412         }
 413
 414         /* todo: but not yet needed
 415          *       return the other stuff
 416          */
 417
 418         *_volume_name = volume_name;
 419         TALLOC_FREE(rdata);
 420         return NT_STATUS_OK;
 421 }
 422
 423 NTSTATUS cli_get_fs_full_size_info(struct cli_state *cli,
 424                                    uint64_t *total_allocation_units,
 425                                    uint64_t *caller_allocation_units,
 426                                    uint64_t *actual_allocation_units,
 427                                    uint64_t *sectors_per_allocation_unit,
 428                                    uint64_t *bytes_per_sector)
 429 {
 430         uint16 setup[1];
 431         uint8_t param[2];
 432         uint8_t *rdata = NULL;
 433         uint32_t rdata_count;
 434         NTSTATUS status;
 435
 436         SSVAL(setup, 0, TRANSACT2_QFSINFO);
 437         SSVAL(param, 0, SMB_FS_FULL_SIZE_INFORMATION);
 438
 439         status = cli_trans(talloc_tos(), cli, SMBtrans2,
 440                            NULL, 0, 0, 0,
 441                            setup, 1, 0, /* setup */
 442                            param, 2, 0,  /* param */
 443                            NULL, 0, 560, /* data */
 444                            NULL,
 445                            NULL, 0, NULL, /* rsetup */
 446                            NULL, 0, NULL, /* rparam */
 447                            &rdata, 32, &rdata_count);  /* rdata */
 448         if (!NT_STATUS_IS_OK(status)) {
 449                 goto fail;
 450         }
 451
 452         if (total_allocation_units) {
 453                 *total_allocation_units = BIG_UINT(rdata, 0);
 454         }
 455         if (caller_allocation_units) {
 456                 *caller_allocation_units = BIG_UINT(rdata,8);
 457         }
 458         if (actual_allocation_units) {
 459                 *actual_allocation_units = BIG_UINT(rdata,16);
 460         }
 461         if (sectors_per_allocation_unit) {
 462                 *sectors_per_allocation_unit = IVAL(rdata,24);
 463         }
 464         if (bytes_per_sector) {
 465                 *bytes_per_sector = IVAL(rdata,28);
 466         }
 467
 468 fail:
 469         TALLOC_FREE(rdata);
 470         return status;
 471 }
 472
 473 NTSTATUS cli_get_posix_fs_info(struct cli_state *cli,
 474                                uint32 *optimal_transfer_size,
 475                                uint32 *block_size,
 476                                uint64_t *total_blocks,
 477                                uint64_t *blocks_available,
 478                                uint64_t *user_blocks_available,
 479                                uint64_t *total_file_nodes,
 480                                uint64_t *free_file_nodes,
 481                                uint64_t *fs_identifier)
 482 {
 483         uint16 setup[1];
 484         uint8_t param[2];
 485         uint8_t *rdata = NULL;
 486         NTSTATUS status;
 487
 488         SSVAL(setup, 0, TRANSACT2_QFSINFO);
 489         SSVAL(param,0,SMB_QUERY_POSIX_FS_INFO);
 490
 491         status = cli_trans(talloc_tos(), cli, SMBtrans2, NULL, 0, 0, 0,
 492                            setup, 1, 0,
 493                            param, 2, 0,
 494                            NULL, 0, 560,
 495                            NULL,
 496                            NULL, 0, NULL, /* rsetup */
 497                            NULL, 0, NULL, /* rparam */
 498                            &rdata, 56, NULL);
 499         if (!NT_STATUS_IS_OK(status)) {
 500                 return status;
 501         }
 502
 503         if (optimal_transfer_size) {
 504                 *optimal_transfer_size = IVAL(rdata, 0);
 505         }
 506         if (block_size) {
 507                 *block_size = IVAL(rdata,4);
 508         }
 509         if (total_blocks) {
 510                 *total_blocks = BIG_UINT(rdata,8);
 511         }
 512         if (blocks_available) {
 513                 *blocks_available = BIG_UINT(rdata,16);
 514         }
 515         if (user_blocks_available) {
 516                 *user_blocks_available = BIG_UINT(rdata,24);
 517         }
 518         if (total_file_nodes) {
 519                 *total_file_nodes = BIG_UINT(rdata,32);
 520         }
 521         if (free_file_nodes) {
 522                 *free_file_nodes = BIG_UINT(rdata,40);
 523         }
 524         if (fs_identifier) {
 525                 *fs_identifier = BIG_UINT(rdata,48);
 526         }
 527         return NT_STATUS_OK;
 528 }
 529
 530
 531 /******************************************************************************
 532  Send/receive the request encryption blob.
 533 ******************************************************************************/
 534
 535 static NTSTATUS enc_blob_send_receive(struct cli_state *cli, DATA_BLOB *in, DATA_BLOB *out, DATA_BLOB *param_out)
 536 {
 537         uint16_t setup[1];
 538         uint8_t param[4];
 539         uint8_t *rparam=NULL, *rdata=NULL;
 540         uint32_t num_rparam, num_rdata;
 541         NTSTATUS status;
 542
 543         SSVAL(setup+0, 0, TRANSACT2_SETFSINFO);
 544         SSVAL(param,0,0);
 545         SSVAL(param,2,SMB_REQUEST_TRANSPORT_ENCRYPTION);
 546
 547         status = cli_trans(talloc_tos(), cli, SMBtrans2, NULL, 0, 0, 0,
 548                            setup, 1, 0,
 549                            param, 4, 2,
 550                            (uint8_t *)in->data, in->length, CLI_BUFFER_SIZE,
 551                            NULL,          /* recv_flags */
 552                            NULL, 0, NULL, /* rsetup */
 553                            &rparam, 0, &num_rparam,
 554                            &rdata, 0, &num_rdata);
 555
 556         if (!NT_STATUS_IS_OK(status) &&
 557             !NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
 558                 return status;
 559         }
 560
 561         *out = data_blob(rdata, num_rdata);
 562         *param_out = data_blob(rparam, num_rparam);
 563
 564         TALLOC_FREE(rparam);
 565         TALLOC_FREE(rdata);
 566         return status;
 567 }
 568
 569 /******************************************************************************
 570  Make a client state struct.
 571 ******************************************************************************/
 572
 573 static struct smb_trans_enc_state *make_cli_enc_state(enum smb_trans_enc_type smb_enc_type)
 574 {
 575         struct smb_trans_enc_state *es = NULL;
 576         es = SMB_MALLOC_P(struct smb_trans_enc_state);
 577         if (!es) {
 578                 return NULL;
 579         }
 580         ZERO_STRUCTP(es);
 581         es->smb_enc_type = smb_enc_type;
 582
 583 #if defined(HAVE_GSSAPI) && defined(HAVE_KRB5)
 584         if (smb_enc_type == SMB_TRANS_ENC_GSS) {
 585                 es->s.gss_state = SMB_MALLOC_P(struct smb_tran_enc_state_gss);
 586                 if (!es->s.gss_state) {
 587                         SAFE_FREE(es);
 588                         return NULL;
 589                 }
 590                 ZERO_STRUCTP(es->s.gss_state);
 591         }
 592 #endif
 593         return es;
 594 }
 595
 596 /******************************************************************************
 597  Start a raw ntlmssp encryption.
 598 ******************************************************************************/
 599
 600 NTSTATUS cli_raw_ntlm_smb_encryption_start(struct cli_state *cli,
 601                                 const char *user,
 602                                 const char *pass,
 603                                 const char *domain)
 604 {
 605         DATA_BLOB blob_in = data_blob_null;
 606         DATA_BLOB blob_out = data_blob_null;
 607         DATA_BLOB param_out = data_blob_null;
 608         NTSTATUS status = NT_STATUS_UNSUCCESSFUL;
 609         struct smb_trans_enc_state *es = make_cli_enc_state(SMB_TRANS_ENC_NTLM);
 610
 611         if (!es) {
 612                 return NT_STATUS_NO_MEMORY;
 613         }
 614         status = ntlmssp_client_start(NULL,
 615                                       lp_netbios_name(),
 616                                       lp_workgroup(),
 617                                       lp_client_ntlmv2_auth(),
 618                                       &es->s.ntlmssp_state);
 619         if (!NT_STATUS_IS_OK(status)) {
 620                 goto fail;
 621         }
 622
 623         ntlmssp_want_feature(es->s.ntlmssp_state, NTLMSSP_FEATURE_SESSION_KEY);
 624         es->s.ntlmssp_state->neg_flags |= (NTLMSSP_NEGOTIATE_SIGN|NTLMSSP_NEGOTIATE_SEAL);
 625
 626         if (!NT_STATUS_IS_OK(status = ntlmssp_set_username(es->s.ntlmssp_state, user))) {
 627                 goto fail;
 628         }
 629         if (!NT_STATUS_IS_OK(status = ntlmssp_set_domain(es->s.ntlmssp_state, domain))) {
 630                 goto fail;
 631         }
 632         if (!NT_STATUS_IS_OK(status = ntlmssp_set_password(es->s.ntlmssp_state, pass))) {
 633                 goto fail;
 634         }
 635
 636         do {
 637                 status = ntlmssp_update(es->s.ntlmssp_state, blob_in, &blob_out);
 638                 data_blob_free(&blob_in);
 639                 data_blob_free(&param_out);
 640                 if (NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED) || NT_STATUS_IS_OK(status)) {
 641                         NTSTATUS trans_status = enc_blob_send_receive(cli,
 642                                                                         &blob_out,
 643                                                                         &blob_in,
 644                                                                         &param_out);
 645                         if (!NT_STATUS_EQUAL(trans_status,
 646                                         NT_STATUS_MORE_PROCESSING_REQUIRED) &&
 647                                         !NT_STATUS_IS_OK(trans_status)) {
 648                                 status = trans_status;
 649                         } else {
 650                                 if (param_out.length == 2) {
 651                                         es->enc_ctx_num = SVAL(param_out.data, 0);
 652                                 }
 653                         }
 654                 }
 655                 data_blob_free(&blob_out);
 656         } while (NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED));
 657
 658         data_blob_free(&blob_in);
 659
 660         if (NT_STATUS_IS_OK(status)) {
 661                 /* Replace the old state, if any. */
 662                 if (cli->trans_enc_state) {
 663                         common_free_encryption_state(&cli->trans_enc_state);
 664                 }
 665                 cli->trans_enc_state = es;
 666                 cli->trans_enc_state->enc_on = True;
 667                 es = NULL;
 668         }
 669
 670   fail:
 671
 672         common_free_encryption_state(&es);
 673         return status;
 674 }
 675
 676 #if defined(HAVE_GSSAPI) && defined(HAVE_KRB5)
 677
 678 #ifndef SMB_GSS_REQUIRED_FLAGS
 679 #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)
 680 #endif
 681
 682 /******************************************************************************
 683  Get client gss blob to send to a server.
 684 ******************************************************************************/
 685
 686 static NTSTATUS make_cli_gss_blob(TALLOC_CTX *ctx,
 687                                 struct smb_trans_enc_state *es,
 688                                 const char *service,
 689                                 const char *host,
 690                                 NTSTATUS status_in,
 691                                 DATA_BLOB spnego_blob_in,
 692                                 DATA_BLOB *p_blob_out)
 693 {
 694         const char *krb_mechs[] = {OID_KERBEROS5, NULL};
 695         OM_uint32 ret;
 696         OM_uint32 min;
 697         gss_name_t srv_name;
 698         gss_buffer_desc input_name;
 699         gss_buffer_desc *p_tok_in;
 700         gss_buffer_desc tok_out, tok_in;
 701         DATA_BLOB blob_out = data_blob_null;
 702         DATA_BLOB blob_in = data_blob_null;
 703         char *host_princ_s = NULL;
 704         OM_uint32 ret_flags = 0;
 705         NTSTATUS status = NT_STATUS_OK;
 706
 707         gss_OID_desc nt_hostbased_service =
 708         {10, discard_const_p(char, "\x2a\x86\x48\x86\xf7\x12\x01\x02\x01\x04")};
 709
 710         memset(&tok_out, '\0', sizeof(tok_out));
 711
 712         /* Get a ticket for the service@host */
 713         if (asprintf(&host_princ_s, "%s@%s", service, host) == -1) {
 714                 return NT_STATUS_NO_MEMORY;
 715         }
 716
 717         input_name.value = host_princ_s;
 718         input_name.length = strlen(host_princ_s) + 1;
 719
 720         ret = gss_import_name(&min,
 721                                 &input_name,
 722                                 &nt_hostbased_service,
 723                                 &srv_name);
 724
 725         if (ret != GSS_S_COMPLETE) {
 726                 SAFE_FREE(host_princ_s);
 727                 return map_nt_error_from_gss(ret, min);
 728         }
 729
 730         if (spnego_blob_in.length == 0) {
 731                 p_tok_in = GSS_C_NO_BUFFER;
 732         } else {
 733                 /* Remove the SPNEGO wrapper */
 734                 if (!spnego_parse_auth_response(ctx, spnego_blob_in, status_in, OID_KERBEROS5, &blob_in)) {
 735                         status = NT_STATUS_UNSUCCESSFUL;
 736                         goto fail;
 737                 }
 738                 tok_in.value = blob_in.data;
 739                 tok_in.length = blob_in.length;
 740                 p_tok_in = &tok_in;
 741         }
 742
 743         ret = gss_init_sec_context(&min,
 744                                 GSS_C_NO_CREDENTIAL, /* Use our default cred. */
 745                                 &es->s.gss_state->gss_ctx,
 746                                 srv_name,
 747                                 GSS_C_NO_OID, /* default OID. */
 748                                 GSS_C_MUTUAL_FLAG | GSS_C_REPLAY_FLAG | GSS_C_SEQUENCE_FLAG | GSS_C_DELEG_FLAG,
 749                                 GSS_C_INDEFINITE,       /* requested ticket lifetime. */
 750                                 NULL,   /* no channel bindings */
 751                                 p_tok_in,
 752                                 NULL,   /* ignore mech type */
 753                                 &tok_out,
 754                                 &ret_flags,
 755                                 NULL);  /* ignore time_rec */
 756
 757         status = map_nt_error_from_gss(ret, min);
 758         if (!NT_STATUS_IS_OK(status) && !NT_STATUS_EQUAL(status,NT_STATUS_MORE_PROCESSING_REQUIRED)) {
 759                 ADS_STATUS adss = ADS_ERROR_GSS(ret, min);
 760                 DEBUG(10,("make_cli_gss_blob: gss_init_sec_context failed with %s\n",
 761                         ads_errstr(adss)));
 762                 goto fail;
 763         }
 764
 765         if ((ret_flags & SMB_GSS_REQUIRED_FLAGS) != SMB_GSS_REQUIRED_FLAGS) {
 766                 status = NT_STATUS_ACCESS_DENIED;
 767         }
 768
 769         blob_out = data_blob_talloc(ctx, tok_out.value, tok_out.length);
 770
 771         /* Wrap in an SPNEGO wrapper */
 772         *p_blob_out = spnego_gen_negTokenInit(ctx, krb_mechs, &blob_out, NULL);
 773
 774   fail:
 775
 776         data_blob_free(&blob_out);
 777         data_blob_free(&blob_in);
 778         SAFE_FREE(host_princ_s);
 779         gss_release_name(&min, &srv_name);
 780         if (tok_out.value) {
 781                 gss_release_buffer(&min, &tok_out);
 782         }
 783         return status;
 784 }
 785
 786 /******************************************************************************
 787  Start a SPNEGO gssapi encryption context.
 788 ******************************************************************************/
 789
 790 NTSTATUS cli_gss_smb_encryption_start(struct cli_state *cli)
 791 {
 792         DATA_BLOB blob_recv = data_blob_null;
 793         DATA_BLOB blob_send = data_blob_null;
 794         DATA_BLOB param_out = data_blob_null;
 795         NTSTATUS status = NT_STATUS_UNSUCCESSFUL;
 796         fstring fqdn;
 797         const char *servicename;
 798         struct smb_trans_enc_state *es = make_cli_enc_state(SMB_TRANS_ENC_GSS);
 799
 800         if (!es) {
 801                 return NT_STATUS_NO_MEMORY;
 802         }
 803
 804         name_to_fqdn(fqdn, cli_state_remote_name(cli));
 805         strlower_m(fqdn);
 806
 807         servicename = "cifs";
 808         status = make_cli_gss_blob(talloc_tos(), es, servicename, fqdn, NT_STATUS_OK, blob_recv, &blob_send);
 809         if (!NT_STATUS_EQUAL(status,NT_STATUS_MORE_PROCESSING_REQUIRED)) {
 810                 servicename = "host";
 811                 status = make_cli_gss_blob(talloc_tos(), es, servicename, fqdn, NT_STATUS_OK, blob_recv, &blob_send);
 812                 if (!NT_STATUS_EQUAL(status,NT_STATUS_MORE_PROCESSING_REQUIRED)) {
 813                         goto fail;
 814                 }
 815         }
 816
 817         do {
 818                 data_blob_free(&blob_recv);
 819                 status = enc_blob_send_receive(cli, &blob_send, &blob_recv, &param_out);
 820                 if (param_out.length == 2) {
 821                         es->enc_ctx_num = SVAL(param_out.data, 0);
 822                 }
 823                 data_blob_free(&blob_send);
 824                 status = make_cli_gss_blob(talloc_tos(), es, servicename, fqdn, status, blob_recv, &blob_send);
 825         } while (NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED));
 826         data_blob_free(&blob_recv);
 827
 828         if (NT_STATUS_IS_OK(status)) {
 829                 /* Replace the old state, if any. */
 830                 if (cli->trans_enc_state) {
 831                         common_free_encryption_state(&cli->trans_enc_state);
 832                 }
 833                 cli->trans_enc_state = es;
 834                 cli->trans_enc_state->enc_on = True;
 835                 es = NULL;
 836         }
 837
 838   fail:
 839
 840         common_free_encryption_state(&es);
 841         return status;
 842 }
 843 #else
 844 NTSTATUS cli_gss_smb_encryption_start(struct cli_state *cli)
 845 {
 846         return NT_STATUS_NOT_SUPPORTED;
 847 }
 848 #endif
 849
 850 /********************************************************************
 851  Ensure a connection is encrypted.
 852 ********************************************************************/
 853
 854 NTSTATUS cli_force_encryption(struct cli_state *c,
 855                         const char *username,
 856                         const char *password,
 857                         const char *domain)
 858 {
 859         uint16 major, minor;
 860         uint32 caplow, caphigh;
 861         NTSTATUS status;
 862
 863         if (!SERVER_HAS_UNIX_CIFS(c)) {
 864                 return NT_STATUS_NOT_SUPPORTED;
 865         }
 866
 867         status = cli_unix_extensions_version(c, &major, &minor, &caplow,
 868                                              &caphigh);
 869         if (!NT_STATUS_IS_OK(status)) {
 870                 DEBUG(10, ("cli_force_encryption: cli_unix_extensions_version "
 871                            "returned %s\n", nt_errstr(status)));
 872                 return NT_STATUS_UNKNOWN_REVISION;
 873         }
 874
 875         if (!(caplow & CIFS_UNIX_TRANSPORT_ENCRYPTION_CAP)) {
 876                 return NT_STATUS_UNSUPPORTED_COMPRESSION;
 877         }
 878
 879         if (c->use_kerberos) {
 880                 return cli_gss_smb_encryption_start(c);
 881         }
 882         return cli_raw_ntlm_smb_encryption_start(c,
 883                                         username,
 884                                         password,
 885                                         domain);
 886 }