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