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
  25 /****************************************************************************
  26  Get UNIX extensions version info.
  27 ****************************************************************************/
  28
  29 struct cli_unix_extensions_version_state {
  30         struct cli_state *cli;
  31         uint16_t setup[1];
  32         uint8_t param[2];
  33         uint16_t major, minor;
  34         uint32_t caplow, caphigh;
  35 };
  36
  37 static void cli_unix_extensions_version_done(struct tevent_req *subreq);
  38
  39 struct tevent_req *cli_unix_extensions_version_send(TALLOC_CTX *mem_ctx,
  40                                                     struct tevent_context *ev,
  41                                                     struct cli_state *cli)
  42 {
  43         struct tevent_req *req, *subreq;
  44         struct cli_unix_extensions_version_state *state;
  45
  46         req = tevent_req_create(mem_ctx, &state,
  47                                 struct cli_unix_extensions_version_state);
  48         if (req == NULL) {
  49                 return NULL;
  50         }
  51         state->cli = cli;
  52         SSVAL(state->setup, 0, TRANSACT2_QFSINFO);
  53         SSVAL(state->param, 0, SMB_QUERY_CIFS_UNIX_INFO);
  54
  55         subreq = cli_trans_send(state, ev, cli, SMBtrans2,
  56                                 NULL, 0, 0, 0,
  57                                 state->setup, 1, 0,
  58                                 state->param, 2, 0,
  59                                 NULL, 0, 560);
  60         if (tevent_req_nomem(subreq, req)) {
  61                 return tevent_req_post(req, ev);
  62         }
  63         tevent_req_set_callback(subreq, cli_unix_extensions_version_done, req);
  64         return req;
  65 }
  66
  67 static void cli_unix_extensions_version_done(struct tevent_req *subreq)
  68 {
  69         struct tevent_req *req = tevent_req_callback_data(
  70                 subreq, struct tevent_req);
  71         struct cli_unix_extensions_version_state *state = tevent_req_data(
  72                 req, struct cli_unix_extensions_version_state);
  73         uint8_t *data;
  74         uint32_t num_data;
  75         NTSTATUS status;
  76
  77         status = cli_trans_recv(subreq, state, NULL, 0, NULL, NULL, 0, NULL,
  78                                 &data, 12, &num_data);
  79         TALLOC_FREE(subreq);
  80         if (!NT_STATUS_IS_OK(status)) {
  81                 tevent_req_nterror(req, status);
  82                 return;
  83         }
  84
  85         state->major = SVAL(data, 0);
  86         state->minor = SVAL(data, 2);
  87         state->caplow = IVAL(data, 4);
  88         state->caphigh = IVAL(data, 8);
  89         TALLOC_FREE(data);
  90         tevent_req_done(req);
  91 }
  92
  93 NTSTATUS cli_unix_extensions_version_recv(struct tevent_req *req,
  94                                           uint16_t *pmajor, uint16_t *pminor,
  95                                           uint32_t *pcaplow,
  96                                           uint32_t *pcaphigh)
  97 {
  98         struct cli_unix_extensions_version_state *state = tevent_req_data(
  99                 req, struct cli_unix_extensions_version_state);
 100         NTSTATUS status;
 101
 102         if (tevent_req_is_nterror(req, &status)) {
 103                 return status;
 104         }
 105         *pmajor = state->major;
 106         *pminor = state->minor;
 107         *pcaplow = state->caplow;
 108         *pcaphigh = state->caphigh;
 109         state->cli->server_posix_capabilities = *pcaplow;
 110         return NT_STATUS_OK;
 111 }
 112
 113 NTSTATUS cli_unix_extensions_version(struct cli_state *cli, uint16 *pmajor,
 114                                      uint16 *pminor, uint32 *pcaplow,
 115                                      uint32 *pcaphigh)
 116 {
 117         TALLOC_CTX *frame = talloc_stackframe();
 118         struct event_context *ev;
 119         struct tevent_req *req;
 120         NTSTATUS status = NT_STATUS_OK;
 121
 122         if (cli_has_async_calls(cli)) {
 123                 /*
 124                  * Can't use sync call while an async call is in flight
 125                  */
 126                 status = NT_STATUS_INVALID_PARAMETER;
 127                 goto fail;
 128         }
 129
 130         ev = event_context_init(frame);
 131         if (ev == NULL) {
 132                 status = NT_STATUS_NO_MEMORY;
 133                 goto fail;
 134         }
 135
 136         req = cli_unix_extensions_version_send(frame, ev, cli);
 137         if (req == NULL) {
 138                 status = NT_STATUS_NO_MEMORY;
 139                 goto fail;
 140         }
 141
 142         if (!tevent_req_poll(req, ev)) {
 143                 status = map_nt_error_from_unix(errno);
 144                 goto fail;
 145         }
 146
 147         status = cli_unix_extensions_version_recv(req, pmajor, pminor, pcaplow,
 148                                                   pcaphigh);
 149  fail:
 150         TALLOC_FREE(frame);
 151         if (!NT_STATUS_IS_OK(status)) {
 152                 cli_set_error(cli, status);
 153         }
 154         return status;
 155 }
 156
 157 /****************************************************************************
 158  Set UNIX extensions capabilities.
 159 ****************************************************************************/
 160
 161 struct cli_set_unix_extensions_capabilities_state {
 162         struct cli_state *cli;
 163         uint16_t setup[1];
 164         uint8_t param[4];
 165         uint8_t data[12];
 166 };
 167
 168 static void cli_set_unix_extensions_capabilities_done(
 169         struct tevent_req *subreq);
 170
 171 struct tevent_req *cli_set_unix_extensions_capabilities_send(
 172         TALLOC_CTX *mem_ctx, struct tevent_context *ev, struct cli_state *cli,
 173         uint16_t major, uint16_t minor, uint32_t caplow, uint32_t caphigh)
 174 {
 175         struct tevent_req *req, *subreq;
 176         struct cli_set_unix_extensions_capabilities_state *state;
 177
 178         req = tevent_req_create(
 179                 mem_ctx, &state,
 180                 struct cli_set_unix_extensions_capabilities_state);
 181         if (req == NULL) {
 182                 return NULL;
 183         }
 184
 185         state->cli = cli;
 186         SSVAL(state->setup+0, 0, TRANSACT2_SETFSINFO);
 187
 188         SSVAL(state->param, 0, 0);
 189         SSVAL(state->param, 2, SMB_SET_CIFS_UNIX_INFO);
 190
 191         SSVAL(state->data, 0, major);
 192         SSVAL(state->data, 2, minor);
 193         SIVAL(state->data, 4, caplow);
 194         SIVAL(state->data, 8, caphigh);
 195
 196         subreq = cli_trans_send(state, ev, cli, SMBtrans2,
 197                                 NULL, 0, 0, 0,
 198                                 state->setup, 1, 0,
 199                                 state->param, 4, 0,
 200                                 state->data, 12, 560);
 201         if (tevent_req_nomem(subreq, req)) {
 202                 return tevent_req_post(req, ev);
 203         }
 204         tevent_req_set_callback(
 205                 subreq, cli_set_unix_extensions_capabilities_done, req);
 206         return req;
 207 }
 208
 209 static void cli_set_unix_extensions_capabilities_done(
 210         struct tevent_req *subreq)
 211 {
 212         struct tevent_req *req = tevent_req_callback_data(
 213                 subreq, struct tevent_req);
 214         struct cli_set_unix_extensions_capabilities_state *state = tevent_req_data(
 215                 req, struct cli_set_unix_extensions_capabilities_state);
 216
 217         NTSTATUS status = cli_trans_recv(subreq, NULL, NULL, 0, NULL,
 218                                          NULL, 0, NULL, NULL, 0, NULL);
 219         if (NT_STATUS_IS_OK(status)) {
 220                 state->cli->requested_posix_capabilities = IVAL(state->data, 4);
 221         }
 222         tevent_req_simple_finish_ntstatus(subreq, status);
 223 }
 224
 225 NTSTATUS cli_set_unix_extensions_capabilities_recv(struct tevent_req *req)
 226 {
 227         return tevent_req_simple_recv_ntstatus(req);
 228 }
 229
 230 NTSTATUS cli_set_unix_extensions_capabilities(struct cli_state *cli,
 231                                               uint16 major, uint16 minor,
 232                                               uint32 caplow, uint32 caphigh)
 233 {
 234         struct tevent_context *ev;
 235         struct tevent_req *req;
 236         NTSTATUS status = NT_STATUS_NO_MEMORY;
 237
 238         if (cli_has_async_calls(cli)) {
 239                 return NT_STATUS_INVALID_PARAMETER;
 240         }
 241         ev = tevent_context_init(talloc_tos());
 242         if (ev == NULL) {
 243                 goto fail;
 244         }
 245         req = cli_set_unix_extensions_capabilities_send(
 246                 ev, ev, cli, major, minor, caplow, caphigh);
 247         if (req == NULL) {
 248                 goto fail;
 249         }
 250         if (!tevent_req_poll_ntstatus(req, ev, &status)) {
 251                 goto fail;
 252         }
 253         status = cli_set_unix_extensions_capabilities_recv(req);
 254 fail:
 255         TALLOC_FREE(ev);
 256         if (!NT_STATUS_IS_OK(status)) {
 257                 cli_set_error(cli, status);
 258         }
 259         return status;
 260 }
 261
 262 struct cli_get_fs_attr_info_state {
 263         uint16_t setup[1];
 264         uint8_t param[2];
 265         uint32_t fs_attr;
 266 };
 267
 268 static void cli_get_fs_attr_info_done(struct tevent_req *subreq);
 269
 270 struct tevent_req *cli_get_fs_attr_info_send(TALLOC_CTX *mem_ctx,
 271                                              struct tevent_context *ev,
 272                                              struct cli_state *cli)
 273 {
 274         struct tevent_req *subreq, *req;
 275         struct cli_get_fs_attr_info_state *state;
 276
 277         req = tevent_req_create(mem_ctx, &state,
 278                                 struct cli_get_fs_attr_info_state);
 279         if (req == NULL) {
 280                 return NULL;
 281         }
 282         SSVAL(state->setup+0, 0, TRANSACT2_QFSINFO);
 283         SSVAL(state->param+0, 0, SMB_QUERY_FS_ATTRIBUTE_INFO);
 284
 285         subreq = cli_trans_send(state, ev, cli, SMBtrans2,
 286                                 NULL, 0, 0, 0,
 287                                 state->setup, 1, 0,
 288                                 state->param, 2, 0,
 289                                 NULL, 0, 560);
 290         if (tevent_req_nomem(subreq, req)) {
 291                 return tevent_req_post(req, ev);
 292         }
 293         tevent_req_set_callback(subreq, cli_get_fs_attr_info_done, req);
 294         return req;
 295 }
 296
 297 static void cli_get_fs_attr_info_done(struct tevent_req *subreq)
 298 {
 299         struct tevent_req *req = tevent_req_callback_data(
 300                 subreq, struct tevent_req);
 301         struct cli_get_fs_attr_info_state *state = tevent_req_data(
 302                 req, struct cli_get_fs_attr_info_state);
 303         uint8_t *data;
 304         uint32_t num_data;
 305         NTSTATUS status;
 306
 307         status = cli_trans_recv(subreq, talloc_tos(), NULL, 0, NULL,
 308                                 NULL, 0, NULL, &data, 12, &num_data);
 309         TALLOC_FREE(subreq);
 310         if (!NT_STATUS_IS_OK(status)) {
 311                 tevent_req_nterror(req, status);
 312                 return;
 313         }
 314         state->fs_attr = IVAL(data, 0);
 315         TALLOC_FREE(data);
 316         tevent_req_done(req);
 317 }
 318
 319 NTSTATUS cli_get_fs_attr_info_recv(struct tevent_req *req, uint32_t *fs_attr)
 320 {
 321         struct cli_get_fs_attr_info_state *state = tevent_req_data(
 322                 req, struct cli_get_fs_attr_info_state);
 323         NTSTATUS status;
 324
 325         if (tevent_req_is_nterror(req, &status)) {
 326                 return status;
 327         }
 328         *fs_attr = state->fs_attr;
 329         return NT_STATUS_OK;
 330 }
 331
 332 NTSTATUS cli_get_fs_attr_info(struct cli_state *cli, uint32_t *fs_attr)
 333 {
 334         struct tevent_context *ev;
 335         struct tevent_req *req;
 336         NTSTATUS status = NT_STATUS_NO_MEMORY;
 337
 338         if (cli_has_async_calls(cli)) {
 339                 return NT_STATUS_INVALID_PARAMETER;
 340         }
 341         ev = tevent_context_init(talloc_tos());
 342         if (ev == NULL) {
 343                 goto fail;
 344         }
 345         req = cli_get_fs_attr_info_send(ev, ev, cli);
 346         if (req == NULL) {
 347                 goto fail;
 348         }
 349         if (!tevent_req_poll_ntstatus(req, ev, &status)) {
 350                 goto fail;
 351         }
 352         status = cli_get_fs_attr_info_recv(req, fs_attr);
 353 fail:
 354         TALLOC_FREE(ev);
 355         if (!NT_STATUS_IS_OK(status)) {
 356                 cli_set_error(cli, status);
 357         }
 358         return status;
 359 }
 360
 361 NTSTATUS cli_get_fs_volume_info(struct cli_state *cli, fstring volume_name,
 362                                 uint32 *pserial_number, time_t *pdate)
 363 {
 364         NTSTATUS status;
 365         uint16 setup[1];
 366         uint8_t param[2];
 367         uint8_t *rdata;
 368         uint32_t rdata_count;
 369         unsigned int nlen;
 370
 371         SSVAL(setup, 0, TRANSACT2_QFSINFO);
 372         SSVAL(param,0,SMB_QUERY_FS_VOLUME_INFO);
 373
 374         status = cli_trans(talloc_tos(), cli, SMBtrans2,
 375                            NULL, 0, 0, 0,
 376                            setup, 1, 0,
 377                            param, 2, 0,
 378                            NULL, 0, 560,
 379                            NULL, 0, NULL,
 380                            NULL, 0, NULL,
 381                            &rdata, 10, &rdata_count);
 382         if (!NT_STATUS_IS_OK(status)) {
 383                 return status;
 384         }
 385
 386         if (pdate) {
 387                 struct timespec ts;
 388                 ts = interpret_long_date((char *)rdata);
 389                 *pdate = ts.tv_sec;
 390         }
 391         if (pserial_number) {
 392                 *pserial_number = IVAL(rdata,8);
 393         }
 394         nlen = IVAL(rdata,12);
 395         clistr_pull(cli->inbuf, volume_name, rdata + 18, sizeof(fstring),
 396                     nlen, STR_UNICODE);
 397
 398         /* todo: but not yet needed
 399          *       return the other stuff
 400          */
 401
 402         TALLOC_FREE(rdata);
 403         return NT_STATUS_OK;
 404 }
 405
 406 bool cli_get_fs_full_size_info(struct cli_state *cli,
 407                                uint64_t *total_allocation_units,
 408                                uint64_t *caller_allocation_units,
 409                                uint64_t *actual_allocation_units,
 410                                uint64_t *sectors_per_allocation_unit,
 411                                uint64_t *bytes_per_sector)
 412 {
 413         bool ret = False;
 414         uint16 setup;
 415         char param[2];
 416         char *rparam=NULL, *rdata=NULL;
 417         unsigned int rparam_count=0, rdata_count=0;
 418
 419         setup = TRANSACT2_QFSINFO;
 420
 421         SSVAL(param,0,SMB_FS_FULL_SIZE_INFORMATION);
 422
 423         if (!cli_send_trans(cli, SMBtrans2,
 424                     NULL,
 425                     0, 0,
 426                     &setup, 1, 0,
 427                     param, 2, 0,
 428                     NULL, 0, 560)) {
 429                 goto cleanup;
 430         }
 431
 432         if (!cli_receive_trans(cli, SMBtrans2,
 433                               &rparam, &rparam_count,
 434                               &rdata, &rdata_count)) {
 435                 goto cleanup;
 436         }
 437
 438         if (cli_is_error(cli)) {
 439                 ret = False;
 440                 goto cleanup;
 441         } else {
 442                 ret = True;
 443         }
 444
 445         if (rdata_count != 32) {
 446                 goto cleanup;
 447         }
 448
 449         if (total_allocation_units) {
 450                 *total_allocation_units = BIG_UINT(rdata, 0);
 451         }
 452         if (caller_allocation_units) {
 453                 *caller_allocation_units = BIG_UINT(rdata,8);
 454         }
 455         if (actual_allocation_units) {
 456                 *actual_allocation_units = BIG_UINT(rdata,16);
 457         }
 458         if (sectors_per_allocation_unit) {
 459                 *sectors_per_allocation_unit = IVAL(rdata,24);
 460         }
 461         if (bytes_per_sector) {
 462                 *bytes_per_sector = IVAL(rdata,28);
 463         }
 464
 465 cleanup:
 466         SAFE_FREE(rparam);
 467         SAFE_FREE(rdata);
 468
 469         return ret;
 470 }
 471
 472 bool cli_get_posix_fs_info(struct cli_state *cli,
 473                            uint32 *optimal_transfer_size,
 474                            uint32 *block_size,
 475                            uint64_t *total_blocks,
 476                            uint64_t *blocks_available,
 477                            uint64_t *user_blocks_available,
 478                            uint64_t *total_file_nodes,
 479                            uint64_t *free_file_nodes,
 480                            uint64_t *fs_identifier)
 481 {
 482         bool ret = False;
 483         uint16 setup;
 484         char param[2];
 485         char *rparam=NULL, *rdata=NULL;
 486         unsigned int rparam_count=0, rdata_count=0;
 487
 488         setup = TRANSACT2_QFSINFO;
 489
 490         SSVAL(param,0,SMB_QUERY_POSIX_FS_INFO);
 491
 492         if (!cli_send_trans(cli, SMBtrans2,
 493                     NULL,
 494                     0, 0,
 495                     &setup, 1, 0,
 496                     param, 2, 0,
 497                     NULL, 0, 560)) {
 498                 goto cleanup;
 499         }
 500
 501         if (!cli_receive_trans(cli, SMBtrans2,
 502                               &rparam, &rparam_count,
 503                               &rdata, &rdata_count)) {
 504                 goto cleanup;
 505         }
 506
 507         if (cli_is_error(cli)) {
 508                 ret = False;
 509                 goto cleanup;
 510         } else {
 511                 ret = True;
 512         }
 513
 514         if (rdata_count != 56) {
 515                 goto cleanup;
 516         }
 517
 518         if (optimal_transfer_size) {
 519                 *optimal_transfer_size = IVAL(rdata, 0);
 520         }
 521         if (block_size) {
 522                 *block_size = IVAL(rdata,4);
 523         }
 524         if (total_blocks) {
 525                 *total_blocks = BIG_UINT(rdata,8);
 526         }
 527         if (blocks_available) {
 528                 *blocks_available = BIG_UINT(rdata,16);
 529         }
 530         if (user_blocks_available) {
 531                 *user_blocks_available = BIG_UINT(rdata,24);
 532         }
 533         if (total_file_nodes) {
 534                 *total_file_nodes = BIG_UINT(rdata,32);
 535         }
 536         if (free_file_nodes) {
 537                 *free_file_nodes = BIG_UINT(rdata,40);
 538         }
 539         if (fs_identifier) {
 540                 *fs_identifier = BIG_UINT(rdata,48);
 541         }
 542
 543 cleanup:
 544         SAFE_FREE(rparam);
 545         SAFE_FREE(rdata);
 546
 547         return ret;
 548 }
 549
 550
 551 /******************************************************************************
 552  Send/receive the request encryption blob.
 553 ******************************************************************************/
 554
 555 static NTSTATUS enc_blob_send_receive(struct cli_state *cli, DATA_BLOB *in, DATA_BLOB *out, DATA_BLOB *param_out)
 556 {
 557         uint16 setup;
 558         char param[4];
 559         char *rparam=NULL, *rdata=NULL;
 560         unsigned int rparam_count=0, rdata_count=0;
 561         NTSTATUS status = NT_STATUS_OK;
 562
 563         setup = TRANSACT2_SETFSINFO;
 564
 565         SSVAL(param,0,0);
 566         SSVAL(param,2,SMB_REQUEST_TRANSPORT_ENCRYPTION);
 567
 568         if (!cli_send_trans(cli, SMBtrans2,
 569                                 NULL,
 570                                 0, 0,
 571                                 &setup, 1, 0,
 572                                 param, 4, 0,
 573                                 (char *)in->data, in->length, CLI_BUFFER_SIZE)) {
 574                 status = cli_nt_error(cli);
 575                 goto out;
 576         }
 577
 578         if (!cli_receive_trans(cli, SMBtrans2,
 579                                 &rparam, &rparam_count,
 580                                 &rdata, &rdata_count)) {
 581                 status = cli_nt_error(cli);
 582                 goto out;
 583         }
 584
 585         if (cli_is_error(cli)) {
 586                 status = cli_nt_error(cli);
 587                 if (!NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
 588                         goto out;
 589                 }
 590         }
 591
 592         *out = data_blob(rdata, rdata_count);
 593         *param_out = data_blob(rparam, rparam_count);
 594
 595   out:
 596
 597         SAFE_FREE(rparam);
 598         SAFE_FREE(rdata);
 599         return status;
 600 }
 601
 602 /******************************************************************************
 603  Make a client state struct.
 604 ******************************************************************************/
 605
 606 static struct smb_trans_enc_state *make_cli_enc_state(enum smb_trans_enc_type smb_enc_type)
 607 {
 608         struct smb_trans_enc_state *es = NULL;
 609         es = SMB_MALLOC_P(struct smb_trans_enc_state);
 610         if (!es) {
 611                 return NULL;
 612         }
 613         ZERO_STRUCTP(es);
 614         es->smb_enc_type = smb_enc_type;
 615
 616 #if defined(HAVE_GSSAPI) && defined(HAVE_KRB5)
 617         if (smb_enc_type == SMB_TRANS_ENC_GSS) {
 618                 es->s.gss_state = SMB_MALLOC_P(struct smb_tran_enc_state_gss);
 619                 if (!es->s.gss_state) {
 620                         SAFE_FREE(es);
 621                         return NULL;
 622                 }
 623                 ZERO_STRUCTP(es->s.gss_state);
 624         }
 625 #endif
 626         return es;
 627 }
 628
 629 /******************************************************************************
 630  Start a raw ntlmssp encryption.
 631 ******************************************************************************/
 632
 633 NTSTATUS cli_raw_ntlm_smb_encryption_start(struct cli_state *cli,
 634                                 const char *user,
 635                                 const char *pass,
 636                                 const char *domain)
 637 {
 638         DATA_BLOB blob_in = data_blob_null;
 639         DATA_BLOB blob_out = data_blob_null;
 640         DATA_BLOB param_out = data_blob_null;
 641         NTSTATUS status = NT_STATUS_UNSUCCESSFUL;
 642         struct smb_trans_enc_state *es = make_cli_enc_state(SMB_TRANS_ENC_NTLM);
 643
 644         if (!es) {
 645                 return NT_STATUS_NO_MEMORY;
 646         }
 647         status = ntlmssp_client_start(NULL,
 648                                       global_myname(),
 649                                       lp_workgroup(),
 650                                       lp_client_ntlmv2_auth(),
 651                                       &es->s.ntlmssp_state);
 652         if (!NT_STATUS_IS_OK(status)) {
 653                 goto fail;
 654         }
 655
 656         ntlmssp_want_feature(es->s.ntlmssp_state, NTLMSSP_FEATURE_SESSION_KEY);
 657         es->s.ntlmssp_state->neg_flags |= (NTLMSSP_NEGOTIATE_SIGN|NTLMSSP_NEGOTIATE_SEAL);
 658
 659         if (!NT_STATUS_IS_OK(status = ntlmssp_set_username(es->s.ntlmssp_state, user))) {
 660                 goto fail;
 661         }
 662         if (!NT_STATUS_IS_OK(status = ntlmssp_set_domain(es->s.ntlmssp_state, domain))) {
 663                 goto fail;
 664         }
 665         if (!NT_STATUS_IS_OK(status = ntlmssp_set_password(es->s.ntlmssp_state, pass))) {
 666                 goto fail;
 667         }
 668
 669         do {
 670                 status = ntlmssp_update(es->s.ntlmssp_state, blob_in, &blob_out);
 671                 data_blob_free(&blob_in);
 672                 data_blob_free(&param_out);
 673                 if (NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED) || NT_STATUS_IS_OK(status)) {
 674                         NTSTATUS trans_status = enc_blob_send_receive(cli,
 675                                                                         &blob_out,
 676                                                                         &blob_in,
 677                                                                         &param_out);
 678                         if (!NT_STATUS_EQUAL(trans_status,
 679                                         NT_STATUS_MORE_PROCESSING_REQUIRED) &&
 680                                         !NT_STATUS_IS_OK(trans_status)) {
 681                                 status = trans_status;
 682                         } else {
 683                                 if (param_out.length == 2) {
 684                                         es->enc_ctx_num = SVAL(param_out.data, 0);
 685                                 }
 686                         }
 687                 }
 688                 data_blob_free(&blob_out);
 689         } while (NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED));
 690
 691         data_blob_free(&blob_in);
 692
 693         if (NT_STATUS_IS_OK(status)) {
 694                 /* Replace the old state, if any. */
 695                 if (cli->trans_enc_state) {
 696                         common_free_encryption_state(&cli->trans_enc_state);
 697                 }
 698                 cli->trans_enc_state = es;
 699                 cli->trans_enc_state->enc_on = True;
 700                 es = NULL;
 701         }
 702
 703   fail:
 704
 705         common_free_encryption_state(&es);
 706         return status;
 707 }
 708
 709 #if defined(HAVE_GSSAPI) && defined(HAVE_KRB5)
 710
 711 #ifndef SMB_GSS_REQUIRED_FLAGS
 712 #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)
 713 #endif
 714
 715 /******************************************************************************
 716  Get client gss blob to send to a server.
 717 ******************************************************************************/
 718
 719 static NTSTATUS make_cli_gss_blob(struct smb_trans_enc_state *es,
 720                                 const char *service,
 721                                 const char *host,
 722                                 NTSTATUS status_in,
 723                                 DATA_BLOB spnego_blob_in,
 724                                 DATA_BLOB *p_blob_out)
 725 {
 726         const char *krb_mechs[] = {OID_KERBEROS5, NULL};
 727         OM_uint32 ret;
 728         OM_uint32 min;
 729         gss_name_t srv_name;
 730         gss_buffer_desc input_name;
 731         gss_buffer_desc *p_tok_in;
 732         gss_buffer_desc tok_out, tok_in;
 733         DATA_BLOB blob_out = data_blob_null;
 734         DATA_BLOB blob_in = data_blob_null;
 735         char *host_princ_s = NULL;
 736         OM_uint32 ret_flags = 0;
 737         NTSTATUS status = NT_STATUS_OK;
 738
 739         gss_OID_desc nt_hostbased_service =
 740         {10, CONST_DISCARD(char *,"\x2a\x86\x48\x86\xf7\x12\x01\x02\x01\x04")};
 741
 742         memset(&tok_out, '\0', sizeof(tok_out));
 743
 744         /* Get a ticket for the service@host */
 745         if (asprintf(&host_princ_s, "%s@%s", service, host) == -1) {
 746                 return NT_STATUS_NO_MEMORY;
 747         }
 748
 749         input_name.value = host_princ_s;
 750         input_name.length = strlen(host_princ_s) + 1;
 751
 752         ret = gss_import_name(&min,
 753                                 &input_name,
 754                                 &nt_hostbased_service,
 755                                 &srv_name);
 756
 757         if (ret != GSS_S_COMPLETE) {
 758                 SAFE_FREE(host_princ_s);
 759                 return map_nt_error_from_gss(ret, min);
 760         }
 761
 762         if (spnego_blob_in.length == 0) {
 763                 p_tok_in = GSS_C_NO_BUFFER;
 764         } else {
 765                 /* Remove the SPNEGO wrapper */
 766                 if (!spnego_parse_auth_response(spnego_blob_in, status_in, OID_KERBEROS5, &blob_in)) {
 767                         status = NT_STATUS_UNSUCCESSFUL;
 768                         goto fail;
 769                 }
 770                 tok_in.value = blob_in.data;
 771                 tok_in.length = blob_in.length;
 772                 p_tok_in = &tok_in;
 773         }
 774
 775         ret = gss_init_sec_context(&min,
 776                                 GSS_C_NO_CREDENTIAL, /* Use our default cred. */
 777                                 &es->s.gss_state->gss_ctx,
 778                                 srv_name,
 779                                 GSS_C_NO_OID, /* default OID. */
 780                                 GSS_C_MUTUAL_FLAG | GSS_C_REPLAY_FLAG | GSS_C_SEQUENCE_FLAG | GSS_C_DELEG_FLAG,
 781                                 GSS_C_INDEFINITE,       /* requested ticket lifetime. */
 782                                 NULL,   /* no channel bindings */
 783                                 p_tok_in,
 784                                 NULL,   /* ignore mech type */
 785                                 &tok_out,
 786                                 &ret_flags,
 787                                 NULL);  /* ignore time_rec */
 788
 789         status = map_nt_error_from_gss(ret, min);
 790         if (!NT_STATUS_IS_OK(status) && !NT_STATUS_EQUAL(status,NT_STATUS_MORE_PROCESSING_REQUIRED)) {
 791                 ADS_STATUS adss = ADS_ERROR_GSS(ret, min);
 792                 DEBUG(10,("make_cli_gss_blob: gss_init_sec_context failed with %s\n",
 793                         ads_errstr(adss)));
 794                 goto fail;
 795         }
 796
 797         if ((ret_flags & SMB_GSS_REQUIRED_FLAGS) != SMB_GSS_REQUIRED_FLAGS) {
 798                 status = NT_STATUS_ACCESS_DENIED;
 799         }
 800
 801         blob_out = data_blob(tok_out.value, tok_out.length);
 802
 803         /* Wrap in an SPNEGO wrapper */
 804         *p_blob_out = spnego_gen_negTokenInit(krb_mechs, &blob_out, NULL);
 805
 806   fail:
 807
 808         data_blob_free(&blob_out);
 809         data_blob_free(&blob_in);
 810         SAFE_FREE(host_princ_s);
 811         gss_release_name(&min, &srv_name);
 812         if (tok_out.value) {
 813                 gss_release_buffer(&min, &tok_out);
 814         }
 815         return status;
 816 }
 817
 818 /******************************************************************************
 819  Start a SPNEGO gssapi encryption context.
 820 ******************************************************************************/
 821
 822 NTSTATUS cli_gss_smb_encryption_start(struct cli_state *cli)
 823 {
 824         DATA_BLOB blob_recv = data_blob_null;
 825         DATA_BLOB blob_send = data_blob_null;
 826         DATA_BLOB param_out = data_blob_null;
 827         NTSTATUS status = NT_STATUS_UNSUCCESSFUL;
 828         fstring fqdn;
 829         const char *servicename;
 830         struct smb_trans_enc_state *es = make_cli_enc_state(SMB_TRANS_ENC_GSS);
 831
 832         if (!es) {
 833                 return NT_STATUS_NO_MEMORY;
 834         }
 835
 836         name_to_fqdn(fqdn, cli->desthost);
 837         strlower_m(fqdn);
 838
 839         servicename = "cifs";
 840         status = make_cli_gss_blob(es, servicename, fqdn, NT_STATUS_OK, blob_recv, &blob_send);
 841         if (!NT_STATUS_EQUAL(status,NT_STATUS_MORE_PROCESSING_REQUIRED)) {
 842                 servicename = "host";
 843                 status = make_cli_gss_blob(es, servicename, fqdn, NT_STATUS_OK, blob_recv, &blob_send);
 844                 if (!NT_STATUS_EQUAL(status,NT_STATUS_MORE_PROCESSING_REQUIRED)) {
 845                         goto fail;
 846                 }
 847         }
 848
 849         do {
 850                 data_blob_free(&blob_recv);
 851                 status = enc_blob_send_receive(cli, &blob_send, &blob_recv, &param_out);
 852                 if (param_out.length == 2) {
 853                         es->enc_ctx_num = SVAL(param_out.data, 0);
 854                 }
 855                 data_blob_free(&blob_send);
 856                 status = make_cli_gss_blob(es, servicename, fqdn, status, blob_recv, &blob_send);
 857         } while (NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED));
 858         data_blob_free(&blob_recv);
 859
 860         if (NT_STATUS_IS_OK(status)) {
 861                 /* Replace the old state, if any. */
 862                 if (cli->trans_enc_state) {
 863                         common_free_encryption_state(&cli->trans_enc_state);
 864                 }
 865                 cli->trans_enc_state = es;
 866                 cli->trans_enc_state->enc_on = True;
 867                 es = NULL;
 868         }
 869
 870   fail:
 871
 872         common_free_encryption_state(&es);
 873         return status;
 874 }
 875 #else
 876 NTSTATUS cli_gss_smb_encryption_start(struct cli_state *cli)
 877 {
 878         return NT_STATUS_NOT_SUPPORTED;
 879 }
 880 #endif
 881
 882 /********************************************************************
 883  Ensure a connection is encrypted.
 884 ********************************************************************/
 885
 886 NTSTATUS cli_force_encryption(struct cli_state *c,
 887                         const char *username,
 888                         const char *password,
 889                         const char *domain)
 890 {
 891         uint16 major, minor;
 892         uint32 caplow, caphigh;
 893         NTSTATUS status;
 894
 895         if (!SERVER_HAS_UNIX_CIFS(c)) {
 896                 return NT_STATUS_NOT_SUPPORTED;
 897         }
 898
 899         status = cli_unix_extensions_version(c, &major, &minor, &caplow,
 900                                              &caphigh);
 901         if (!NT_STATUS_IS_OK(status)) {
 902                 DEBUG(10, ("cli_force_encryption: cli_unix_extensions_version "
 903                            "returned %s\n", nt_errstr(status)));
 904                 return NT_STATUS_UNKNOWN_REVISION;
 905         }
 906
 907         if (!(caplow & CIFS_UNIX_TRANSPORT_ENCRYPTION_CAP)) {
 908                 return NT_STATUS_UNSUPPORTED_COMPRESSION;
 909         }
 910
 911         if (c->use_kerberos) {
 912                 return cli_gss_smb_encryption_start(c);
 913         }
 914         return cli_raw_ntlm_smb_encryption_start(c,
 915                                         username,
 916                                         password,
 917                                         domain);
 918 }