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 setup;
 523         char param[4];
 524         char *rparam=NULL, *rdata=NULL;
 525         unsigned int rparam_count=0, rdata_count=0;
 526         NTSTATUS status = NT_STATUS_OK;
 527
 528         setup = TRANSACT2_SETFSINFO;
 529
 530         SSVAL(param,0,0);
 531         SSVAL(param,2,SMB_REQUEST_TRANSPORT_ENCRYPTION);
 532
 533         if (!cli_send_trans(cli, SMBtrans2,
 534                                 NULL,
 535                                 0, 0,
 536                                 &setup, 1, 0,
 537                                 param, 4, 0,
 538                                 (char *)in->data, in->length, CLI_BUFFER_SIZE)) {
 539                 status = cli_nt_error(cli);
 540                 goto out;
 541         }
 542
 543         if (!cli_receive_trans(cli, SMBtrans2,
 544                                 &rparam, &rparam_count,
 545                                 &rdata, &rdata_count)) {
 546                 status = cli_nt_error(cli);
 547                 goto out;
 548         }
 549
 550         if (cli_is_error(cli)) {
 551                 status = cli_nt_error(cli);
 552                 if (!NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
 553                         goto out;
 554                 }
 555         }
 556
 557         *out = data_blob(rdata, rdata_count);
 558         *param_out = data_blob(rparam, rparam_count);
 559
 560   out:
 561
 562         SAFE_FREE(rparam);
 563         SAFE_FREE(rdata);
 564         return status;
 565 }
 566
 567 /******************************************************************************
 568  Make a client state struct.
 569 ******************************************************************************/
 570
 571 static struct smb_trans_enc_state *make_cli_enc_state(enum smb_trans_enc_type smb_enc_type)
 572 {
 573         struct smb_trans_enc_state *es = NULL;
 574         es = SMB_MALLOC_P(struct smb_trans_enc_state);
 575         if (!es) {
 576                 return NULL;
 577         }
 578         ZERO_STRUCTP(es);
 579         es->smb_enc_type = smb_enc_type;
 580
 581 #if defined(HAVE_GSSAPI) && defined(HAVE_KRB5)
 582         if (smb_enc_type == SMB_TRANS_ENC_GSS) {
 583                 es->s.gss_state = SMB_MALLOC_P(struct smb_tran_enc_state_gss);
 584                 if (!es->s.gss_state) {
 585                         SAFE_FREE(es);
 586                         return NULL;
 587                 }
 588                 ZERO_STRUCTP(es->s.gss_state);
 589         }
 590 #endif
 591         return es;
 592 }
 593
 594 /******************************************************************************
 595  Start a raw ntlmssp encryption.
 596 ******************************************************************************/
 597
 598 NTSTATUS cli_raw_ntlm_smb_encryption_start(struct cli_state *cli,
 599                                 const char *user,
 600                                 const char *pass,
 601                                 const char *domain)
 602 {
 603         DATA_BLOB blob_in = data_blob_null;
 604         DATA_BLOB blob_out = data_blob_null;
 605         DATA_BLOB param_out = data_blob_null;
 606         NTSTATUS status = NT_STATUS_UNSUCCESSFUL;
 607         struct smb_trans_enc_state *es = make_cli_enc_state(SMB_TRANS_ENC_NTLM);
 608
 609         if (!es) {
 610                 return NT_STATUS_NO_MEMORY;
 611         }
 612         status = ntlmssp_client_start(NULL,
 613                                       global_myname(),
 614                                       lp_workgroup(),
 615                                       lp_client_ntlmv2_auth(),
 616                                       &es->s.ntlmssp_state);
 617         if (!NT_STATUS_IS_OK(status)) {
 618                 goto fail;
 619         }
 620
 621         ntlmssp_want_feature(es->s.ntlmssp_state, NTLMSSP_FEATURE_SESSION_KEY);
 622         es->s.ntlmssp_state->neg_flags |= (NTLMSSP_NEGOTIATE_SIGN|NTLMSSP_NEGOTIATE_SEAL);
 623
 624         if (!NT_STATUS_IS_OK(status = ntlmssp_set_username(es->s.ntlmssp_state, user))) {
 625                 goto fail;
 626         }
 627         if (!NT_STATUS_IS_OK(status = ntlmssp_set_domain(es->s.ntlmssp_state, domain))) {
 628                 goto fail;
 629         }
 630         if (!NT_STATUS_IS_OK(status = ntlmssp_set_password(es->s.ntlmssp_state, pass))) {
 631                 goto fail;
 632         }
 633
 634         do {
 635                 status = ntlmssp_update(es->s.ntlmssp_state, blob_in, &blob_out);
 636                 data_blob_free(&blob_in);
 637                 data_blob_free(&param_out);
 638                 if (NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED) || NT_STATUS_IS_OK(status)) {
 639                         NTSTATUS trans_status = enc_blob_send_receive(cli,
 640                                                                         &blob_out,
 641                                                                         &blob_in,
 642                                                                         &param_out);
 643                         if (!NT_STATUS_EQUAL(trans_status,
 644                                         NT_STATUS_MORE_PROCESSING_REQUIRED) &&
 645                                         !NT_STATUS_IS_OK(trans_status)) {
 646                                 status = trans_status;
 647                         } else {
 648                                 if (param_out.length == 2) {
 649                                         es->enc_ctx_num = SVAL(param_out.data, 0);
 650                                 }
 651                         }
 652                 }
 653                 data_blob_free(&blob_out);
 654         } while (NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED));
 655
 656         data_blob_free(&blob_in);
 657
 658         if (NT_STATUS_IS_OK(status)) {
 659                 /* Replace the old state, if any. */
 660                 if (cli->trans_enc_state) {
 661                         common_free_encryption_state(&cli->trans_enc_state);
 662                 }
 663                 cli->trans_enc_state = es;
 664                 cli->trans_enc_state->enc_on = True;
 665                 es = NULL;
 666         }
 667
 668   fail:
 669
 670         common_free_encryption_state(&es);
 671         return status;
 672 }
 673
 674 #if defined(HAVE_GSSAPI) && defined(HAVE_KRB5)
 675
 676 #ifndef SMB_GSS_REQUIRED_FLAGS
 677 #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)
 678 #endif
 679
 680 /******************************************************************************
 681  Get client gss blob to send to a server.
 682 ******************************************************************************/
 683
 684 static NTSTATUS make_cli_gss_blob(TALLOC_CTX *ctx,
 685                                 struct smb_trans_enc_state *es,
 686                                 const char *service,
 687                                 const char *host,
 688                                 NTSTATUS status_in,
 689                                 DATA_BLOB spnego_blob_in,
 690                                 DATA_BLOB *p_blob_out)
 691 {
 692         const char *krb_mechs[] = {OID_KERBEROS5, NULL};
 693         OM_uint32 ret;
 694         OM_uint32 min;
 695         gss_name_t srv_name;
 696         gss_buffer_desc input_name;
 697         gss_buffer_desc *p_tok_in;
 698         gss_buffer_desc tok_out, tok_in;
 699         DATA_BLOB blob_out = data_blob_null;
 700         DATA_BLOB blob_in = data_blob_null;
 701         char *host_princ_s = NULL;
 702         OM_uint32 ret_flags = 0;
 703         NTSTATUS status = NT_STATUS_OK;
 704
 705         gss_OID_desc nt_hostbased_service =
 706         {10, CONST_DISCARD(char *,"\x2a\x86\x48\x86\xf7\x12\x01\x02\x01\x04")};
 707
 708         memset(&tok_out, '\0', sizeof(tok_out));
 709
 710         /* Get a ticket for the service@host */
 711         if (asprintf(&host_princ_s, "%s@%s", service, host) == -1) {
 712                 return NT_STATUS_NO_MEMORY;
 713         }
 714
 715         input_name.value = host_princ_s;
 716         input_name.length = strlen(host_princ_s) + 1;
 717
 718         ret = gss_import_name(&min,
 719                                 &input_name,
 720                                 &nt_hostbased_service,
 721                                 &srv_name);
 722
 723         if (ret != GSS_S_COMPLETE) {
 724                 SAFE_FREE(host_princ_s);
 725                 return map_nt_error_from_gss(ret, min);
 726         }
 727
 728         if (spnego_blob_in.length == 0) {
 729                 p_tok_in = GSS_C_NO_BUFFER;
 730         } else {
 731                 /* Remove the SPNEGO wrapper */
 732                 if (!spnego_parse_auth_response(ctx, spnego_blob_in, status_in, OID_KERBEROS5, &blob_in)) {
 733                         status = NT_STATUS_UNSUCCESSFUL;
 734                         goto fail;
 735                 }
 736                 tok_in.value = blob_in.data;
 737                 tok_in.length = blob_in.length;
 738                 p_tok_in = &tok_in;
 739         }
 740
 741         ret = gss_init_sec_context(&min,
 742                                 GSS_C_NO_CREDENTIAL, /* Use our default cred. */
 743                                 &es->s.gss_state->gss_ctx,
 744                                 srv_name,
 745                                 GSS_C_NO_OID, /* default OID. */
 746                                 GSS_C_MUTUAL_FLAG | GSS_C_REPLAY_FLAG | GSS_C_SEQUENCE_FLAG | GSS_C_DELEG_FLAG,
 747                                 GSS_C_INDEFINITE,       /* requested ticket lifetime. */
 748                                 NULL,   /* no channel bindings */
 749                                 p_tok_in,
 750                                 NULL,   /* ignore mech type */
 751                                 &tok_out,
 752                                 &ret_flags,
 753                                 NULL);  /* ignore time_rec */
 754
 755         status = map_nt_error_from_gss(ret, min);
 756         if (!NT_STATUS_IS_OK(status) && !NT_STATUS_EQUAL(status,NT_STATUS_MORE_PROCESSING_REQUIRED)) {
 757                 ADS_STATUS adss = ADS_ERROR_GSS(ret, min);
 758                 DEBUG(10,("make_cli_gss_blob: gss_init_sec_context failed with %s\n",
 759                         ads_errstr(adss)));
 760                 goto fail;
 761         }
 762
 763         if ((ret_flags & SMB_GSS_REQUIRED_FLAGS) != SMB_GSS_REQUIRED_FLAGS) {
 764                 status = NT_STATUS_ACCESS_DENIED;
 765         }
 766
 767         blob_out = data_blob_talloc(ctx, tok_out.value, tok_out.length);
 768
 769         /* Wrap in an SPNEGO wrapper */
 770         *p_blob_out = spnego_gen_negTokenInit(ctx, krb_mechs, &blob_out, NULL);
 771
 772   fail:
 773
 774         data_blob_free(&blob_out);
 775         data_blob_free(&blob_in);
 776         SAFE_FREE(host_princ_s);
 777         gss_release_name(&min, &srv_name);
 778         if (tok_out.value) {
 779                 gss_release_buffer(&min, &tok_out);
 780         }
 781         return status;
 782 }
 783
 784 /******************************************************************************
 785  Start a SPNEGO gssapi encryption context.
 786 ******************************************************************************/
 787
 788 NTSTATUS cli_gss_smb_encryption_start(struct cli_state *cli)
 789 {
 790         DATA_BLOB blob_recv = data_blob_null;
 791         DATA_BLOB blob_send = data_blob_null;
 792         DATA_BLOB param_out = data_blob_null;
 793         NTSTATUS status = NT_STATUS_UNSUCCESSFUL;
 794         fstring fqdn;
 795         const char *servicename;
 796         struct smb_trans_enc_state *es = make_cli_enc_state(SMB_TRANS_ENC_GSS);
 797
 798         if (!es) {
 799                 return NT_STATUS_NO_MEMORY;
 800         }
 801
 802         name_to_fqdn(fqdn, cli->desthost);
 803         strlower_m(fqdn);
 804
 805         servicename = "cifs";
 806         status = make_cli_gss_blob(talloc_tos(), es, servicename, fqdn, NT_STATUS_OK, blob_recv, &blob_send);
 807         if (!NT_STATUS_EQUAL(status,NT_STATUS_MORE_PROCESSING_REQUIRED)) {
 808                 servicename = "host";
 809                 status = make_cli_gss_blob(talloc_tos(), es, servicename, fqdn, NT_STATUS_OK, blob_recv, &blob_send);
 810                 if (!NT_STATUS_EQUAL(status,NT_STATUS_MORE_PROCESSING_REQUIRED)) {
 811                         goto fail;
 812                 }
 813         }
 814
 815         do {
 816                 data_blob_free(&blob_recv);
 817                 status = enc_blob_send_receive(cli, &blob_send, &blob_recv, &param_out);
 818                 if (param_out.length == 2) {
 819                         es->enc_ctx_num = SVAL(param_out.data, 0);
 820                 }
 821                 data_blob_free(&blob_send);
 822                 status = make_cli_gss_blob(talloc_tos(), es, servicename, fqdn, status, blob_recv, &blob_send);
 823         } while (NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED));
 824         data_blob_free(&blob_recv);
 825
 826         if (NT_STATUS_IS_OK(status)) {
 827                 /* Replace the old state, if any. */
 828                 if (cli->trans_enc_state) {
 829                         common_free_encryption_state(&cli->trans_enc_state);
 830                 }
 831                 cli->trans_enc_state = es;
 832                 cli->trans_enc_state->enc_on = True;
 833                 es = NULL;
 834         }
 835
 836   fail:
 837
 838         common_free_encryption_state(&es);
 839         return status;
 840 }
 841 #else
 842 NTSTATUS cli_gss_smb_encryption_start(struct cli_state *cli)
 843 {
 844         return NT_STATUS_NOT_SUPPORTED;
 845 }
 846 #endif
 847
 848 /********************************************************************
 849  Ensure a connection is encrypted.
 850 ********************************************************************/
 851
 852 NTSTATUS cli_force_encryption(struct cli_state *c,
 853                         const char *username,
 854                         const char *password,
 855                         const char *domain)
 856 {
 857         uint16 major, minor;
 858         uint32 caplow, caphigh;
 859         NTSTATUS status;
 860
 861         if (!SERVER_HAS_UNIX_CIFS(c)) {
 862                 return NT_STATUS_NOT_SUPPORTED;
 863         }
 864
 865         status = cli_unix_extensions_version(c, &major, &minor, &caplow,
 866                                              &caphigh);
 867         if (!NT_STATUS_IS_OK(status)) {
 868                 DEBUG(10, ("cli_force_encryption: cli_unix_extensions_version "
 869                            "returned %s\n", nt_errstr(status)));
 870                 return NT_STATUS_UNKNOWN_REVISION;
 871         }
 872
 873         if (!(caplow & CIFS_UNIX_TRANSPORT_ENCRYPTION_CAP)) {
 874                 return NT_STATUS_UNSUPPORTED_COMPRESSION;
 875         }
 876
 877         if (c->use_kerberos) {
 878                 return cli_gss_smb_encryption_start(c);
 879         }
 880         return cli_raw_ntlm_smb_encryption_start(c,
 881                                         username,
 882                                         password,
 883                                         domain);
 884 }