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 2 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, write to the Free Software
  19    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  20 */
  21
  22 #include "includes.h"
  23
  24 /****************************************************************************
  25  Get UNIX extensions version info.
  26 ****************************************************************************/
  27
  28 BOOL cli_unix_extensions_version(struct cli_state *cli, uint16 *pmajor, uint16 *pminor,
  29                                         uint32 *pcaplow, uint32 *pcaphigh)
  30 {
  31         BOOL ret = False;
  32         uint16 setup;
  33         char param[2];
  34         char *rparam=NULL, *rdata=NULL;
  35         unsigned int rparam_count=0, rdata_count=0;
  36
  37         setup = TRANSACT2_QFSINFO;
  38
  39         SSVAL(param,0,SMB_QUERY_CIFS_UNIX_INFO);
  40
  41         if (!cli_send_trans(cli, SMBtrans2,
  42                     NULL,
  43                     0, 0,
  44                     &setup, 1, 0,
  45                     param, 2, 0,
  46                     NULL, 0, 560)) {
  47                 goto cleanup;
  48         }
  49
  50         if (!cli_receive_trans(cli, SMBtrans2,
  51                               &rparam, &rparam_count,
  52                               &rdata, &rdata_count)) {
  53                 goto cleanup;
  54         }
  55
  56         if (cli_is_error(cli)) {
  57                 ret = False;
  58                 goto cleanup;
  59         } else {
  60                 ret = True;
  61         }
  62
  63         if (rdata_count < 12) {
  64                 goto cleanup;
  65         }
  66
  67         *pmajor = SVAL(rdata,0);
  68         *pminor = SVAL(rdata,2);
  69         *pcaplow = IVAL(rdata,4);
  70         *pcaphigh = IVAL(rdata,8);
  71
  72         /* todo: but not yet needed
  73          *       return the other stuff
  74          */
  75
  76 cleanup:
  77         SAFE_FREE(rparam);
  78         SAFE_FREE(rdata);
  79
  80         return ret;
  81 }
  82
  83 /****************************************************************************
  84  Set UNIX extensions capabilities.
  85 ****************************************************************************/
  86
  87 BOOL cli_set_unix_extensions_capabilities(struct cli_state *cli, uint16 major, uint16 minor,
  88                                         uint32 caplow, uint32 caphigh)
  89 {
  90         BOOL ret = False;
  91         uint16 setup;
  92         char param[4];
  93         char data[12];
  94         char *rparam=NULL, *rdata=NULL;
  95         unsigned int rparam_count=0, rdata_count=0;
  96
  97         setup = TRANSACT2_SETFSINFO;
  98
  99         SSVAL(param,0,0);
 100         SSVAL(param,2,SMB_SET_CIFS_UNIX_INFO);
 101
 102         SSVAL(data,0,major);
 103         SSVAL(data,2,minor);
 104         SIVAL(data,4,caplow);
 105         SIVAL(data,8,caphigh);
 106
 107         if (!cli_send_trans(cli, SMBtrans2,
 108                     NULL,
 109                     0, 0,
 110                     &setup, 1, 0,
 111                     param, 4, 0,
 112                     data, 12, 560)) {
 113                 goto cleanup;
 114         }
 115
 116         if (!cli_receive_trans(cli, SMBtrans2,
 117                               &rparam, &rparam_count,
 118                               &rdata, &rdata_count)) {
 119                 goto cleanup;
 120         }
 121
 122         if (cli_is_error(cli)) {
 123                 ret = False;
 124                 goto cleanup;
 125         } else {
 126                 ret = True;
 127         }
 128
 129 cleanup:
 130         SAFE_FREE(rparam);
 131         SAFE_FREE(rdata);
 132
 133         return ret;
 134 }
 135
 136 BOOL cli_get_fs_attr_info(struct cli_state *cli, uint32 *fs_attr)
 137 {
 138         BOOL ret = False;
 139         uint16 setup;
 140         char param[2];
 141         char *rparam=NULL, *rdata=NULL;
 142         unsigned int rparam_count=0, rdata_count=0;
 143
 144         if (!cli||!fs_attr)
 145                 smb_panic("cli_get_fs_attr_info() called with NULL Pionter!");
 146
 147         setup = TRANSACT2_QFSINFO;
 148
 149         SSVAL(param,0,SMB_QUERY_FS_ATTRIBUTE_INFO);
 150
 151         if (!cli_send_trans(cli, SMBtrans2,
 152                     NULL,
 153                     0, 0,
 154                     &setup, 1, 0,
 155                     param, 2, 0,
 156                     NULL, 0, 560)) {
 157                 goto cleanup;
 158         }
 159
 160         if (!cli_receive_trans(cli, SMBtrans2,
 161                               &rparam, &rparam_count,
 162                               &rdata, &rdata_count)) {
 163                 goto cleanup;
 164         }
 165
 166         if (cli_is_error(cli)) {
 167                 ret = False;
 168                 goto cleanup;
 169         } else {
 170                 ret = True;
 171         }
 172
 173         if (rdata_count < 12) {
 174                 goto cleanup;
 175         }
 176
 177         *fs_attr = IVAL(rdata,0);
 178
 179         /* todo: but not yet needed
 180          *       return the other stuff
 181          */
 182
 183 cleanup:
 184         SAFE_FREE(rparam);
 185         SAFE_FREE(rdata);
 186
 187         return ret;
 188 }
 189
 190 BOOL cli_get_fs_volume_info_old(struct cli_state *cli, fstring volume_name, uint32 *pserial_number)
 191 {
 192         BOOL ret = False;
 193         uint16 setup;
 194         char param[2];
 195         char *rparam=NULL, *rdata=NULL;
 196         unsigned int rparam_count=0, rdata_count=0;
 197         unsigned char nlen;
 198
 199         setup = TRANSACT2_QFSINFO;
 200
 201         SSVAL(param,0,SMB_INFO_VOLUME);
 202
 203         if (!cli_send_trans(cli, SMBtrans2,
 204                     NULL,
 205                     0, 0,
 206                     &setup, 1, 0,
 207                     param, 2, 0,
 208                     NULL, 0, 560)) {
 209                 goto cleanup;
 210         }
 211
 212         if (!cli_receive_trans(cli, SMBtrans2,
 213                               &rparam, &rparam_count,
 214                               &rdata, &rdata_count)) {
 215                 goto cleanup;
 216         }
 217
 218         if (cli_is_error(cli)) {
 219                 ret = False;
 220                 goto cleanup;
 221         } else {
 222                 ret = True;
 223         }
 224
 225         if (rdata_count < 5) {
 226                 goto cleanup;
 227         }
 228
 229         if (pserial_number) {
 230                 *pserial_number = IVAL(rdata,0);
 231         }
 232         nlen = CVAL(rdata,l2_vol_cch);
 233         clistr_pull(cli, volume_name, rdata + l2_vol_szVolLabel, sizeof(fstring), nlen, STR_NOALIGN);
 234
 235         /* todo: but not yet needed
 236          *       return the other stuff
 237          */
 238
 239 cleanup:
 240         SAFE_FREE(rparam);
 241         SAFE_FREE(rdata);
 242
 243         return ret;
 244 }
 245
 246 BOOL cli_get_fs_volume_info(struct cli_state *cli, fstring volume_name, uint32 *pserial_number, time_t *pdate)
 247 {
 248         BOOL ret = False;
 249         uint16 setup;
 250         char param[2];
 251         char *rparam=NULL, *rdata=NULL;
 252         unsigned int rparam_count=0, rdata_count=0;
 253         unsigned int nlen;
 254
 255         setup = TRANSACT2_QFSINFO;
 256
 257         SSVAL(param,0,SMB_QUERY_FS_VOLUME_INFO);
 258
 259         if (!cli_send_trans(cli, SMBtrans2,
 260                     NULL,
 261                     0, 0,
 262                     &setup, 1, 0,
 263                     param, 2, 0,
 264                     NULL, 0, 560)) {
 265                 goto cleanup;
 266         }
 267
 268         if (!cli_receive_trans(cli, SMBtrans2,
 269                               &rparam, &rparam_count,
 270                               &rdata, &rdata_count)) {
 271                 goto cleanup;
 272         }
 273
 274         if (cli_is_error(cli)) {
 275                 ret = False;
 276                 goto cleanup;
 277         } else {
 278                 ret = True;
 279         }
 280
 281         if (rdata_count < 19) {
 282                 goto cleanup;
 283         }
 284
 285         if (pdate) {
 286                 struct timespec ts;
 287                 ts = interpret_long_date(rdata);
 288                 *pdate = ts.tv_sec;
 289         }
 290         if (pserial_number) {
 291                 *pserial_number = IVAL(rdata,8);
 292         }
 293         nlen = IVAL(rdata,12);
 294         clistr_pull(cli, volume_name, rdata + 18, sizeof(fstring), nlen, STR_UNICODE);
 295
 296         /* todo: but not yet needed
 297          *       return the other stuff
 298          */
 299
 300 cleanup:
 301         SAFE_FREE(rparam);
 302         SAFE_FREE(rdata);
 303
 304         return ret;
 305 }
 306
 307 /******************************************************************************
 308  Send/receive the request encryption blob.
 309 ******************************************************************************/
 310
 311 static NTSTATUS enc_blob_send_receive(struct cli_state *cli, DATA_BLOB *in, DATA_BLOB *out, DATA_BLOB *param_out)
 312 {
 313         uint16 setup;
 314         char param[4];
 315         char *rparam=NULL, *rdata=NULL;
 316         unsigned int rparam_count=0, rdata_count=0;
 317         NTSTATUS status = NT_STATUS_OK;
 318
 319         setup = TRANSACT2_SETFSINFO;
 320
 321         SSVAL(param,0,0);
 322         SSVAL(param,2,SMB_REQUEST_TRANSPORT_ENCRYPTION);
 323
 324         if (!cli_send_trans(cli, SMBtrans2,
 325                                 NULL,
 326                                 0, 0,
 327                                 &setup, 1, 0,
 328                                 param, 4, 0,
 329                                 (char *)in->data, in->length, CLI_BUFFER_SIZE)) {
 330                 status = cli_nt_error(cli);
 331                 goto out;
 332         }
 333
 334         if (!cli_receive_trans(cli, SMBtrans2,
 335                                 &rparam, &rparam_count,
 336                                 &rdata, &rdata_count)) {
 337                 status = cli_nt_error(cli);
 338                 goto out;
 339         }
 340
 341         if (cli_is_error(cli)) {
 342                 status = cli_nt_error(cli);
 343                 if (!NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
 344                         goto out;
 345                 }
 346         }
 347
 348         *out = data_blob(rdata, rdata_count);
 349         *param_out = data_blob(rparam, rparam_count);
 350
 351   out:
 352
 353         SAFE_FREE(rparam);
 354         SAFE_FREE(rdata);
 355         return status;
 356 }
 357
 358 /******************************************************************************
 359  Make a client state struct.
 360 ******************************************************************************/
 361
 362 static struct smb_trans_enc_state *make_cli_enc_state(enum smb_trans_enc_type smb_enc_type)
 363 {
 364         struct smb_trans_enc_state *es = NULL;
 365         es = SMB_MALLOC_P(struct smb_trans_enc_state);
 366         if (!es) {
 367                 return NULL;
 368         }
 369         ZERO_STRUCTP(es);
 370         es->smb_enc_type = smb_enc_type;
 371         return es;
 372 }
 373
 374 /******************************************************************************
 375  Start a raw ntlmssp encryption.
 376 ******************************************************************************/
 377
 378 NTSTATUS cli_raw_ntlm_smb_encryption_start(struct cli_state *cli,
 379                                 const char *user,
 380                                 const char *pass,
 381                                 const char *domain)
 382 {
 383         DATA_BLOB blob_in = data_blob(NULL, 0);
 384         DATA_BLOB blob_out = data_blob(NULL, 0);
 385         DATA_BLOB param_out = data_blob(NULL, 0);
 386         NTSTATUS status = NT_STATUS_UNSUCCESSFUL;
 387         struct smb_trans_enc_state *es = make_cli_enc_state(SMB_TRANS_ENC_NTLM);
 388
 389         if (!es) {
 390                 return NT_STATUS_NO_MEMORY;
 391         }
 392         status = ntlmssp_client_start(&es->s.ntlmssp_state);
 393         if (!NT_STATUS_IS_OK(status)) {
 394                 goto fail;
 395         }
 396
 397         ntlmssp_want_feature(es->s.ntlmssp_state, NTLMSSP_FEATURE_SESSION_KEY);
 398         es->s.ntlmssp_state->neg_flags |= (NTLMSSP_NEGOTIATE_SIGN|NTLMSSP_NEGOTIATE_SEAL);
 399
 400         if (!NT_STATUS_IS_OK(status = ntlmssp_set_username(es->s.ntlmssp_state, user))) {
 401                 goto fail;
 402         }
 403         if (!NT_STATUS_IS_OK(status = ntlmssp_set_domain(es->s.ntlmssp_state, domain))) {
 404                 goto fail;
 405         }
 406         if (!NT_STATUS_IS_OK(status = ntlmssp_set_password(es->s.ntlmssp_state, pass))) {
 407                 goto fail;
 408         }
 409
 410         do {
 411                 status = ntlmssp_update(es->s.ntlmssp_state, blob_in, &blob_out);
 412                 data_blob_free(&blob_in);
 413                 data_blob_free(&param_out);
 414                 if (NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED) || NT_STATUS_IS_OK(status)) {
 415                         status = enc_blob_send_receive(cli, &blob_out, &blob_in, &param_out);
 416                 }
 417                 if (param_out.length == 2) {
 418                         es->enc_ctx_num = SVAL(param_out.data, 0);
 419                 }
 420                 data_blob_free(&blob_out);
 421         } while (NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED));
 422
 423         data_blob_free(&blob_in);
 424
 425         if (NT_STATUS_IS_OK(status)) {
 426                 /* Replace the old state, if any. */
 427                 if (cli->trans_enc_state) {
 428                         common_free_encryption_state(&cli->trans_enc_state);
 429                 }
 430                 cli->trans_enc_state = es;
 431                 cli->trans_enc_state->enc_on = True;
 432                 es = NULL;
 433         }
 434
 435   fail:
 436
 437         common_free_encryption_state(&es);
 438         return status;
 439 }
 440
 441 #if defined(HAVE_GSSAPI) && defined(HAVE_KRB5)
 442
 443 #ifndef SMB_GSS_REQUIRED_FLAGS
 444 #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)
 445 #endif
 446
 447 /******************************************************************************
 448  Get client gss blob to send to a server.
 449 ******************************************************************************/
 450
 451 static NTSTATUS make_cli_gss_blob(struct smb_trans_enc_state *es,
 452                                 const char *service,
 453                                 const char *host,
 454                                 NTSTATUS status_in,
 455                                 DATA_BLOB spnego_blob_in,
 456                                 DATA_BLOB *p_blob_out)
 457 {
 458         const char *krb_mechs[] = {OID_KERBEROS5_OLD, OID_KERBEROS5, NULL};
 459         OM_uint32 ret;
 460         OM_uint32 min;
 461         gss_name_t srv_name;
 462         gss_buffer_desc input_name;
 463         gss_buffer_desc *p_tok_in;
 464         gss_buffer_desc tok_out, tok_in;
 465         DATA_BLOB blob_out = data_blob(NULL, 0);
 466         DATA_BLOB blob_in = data_blob(NULL, 0);
 467         char *host_princ_s = NULL;
 468         OM_uint32 ret_flags = 0;
 469         NTSTATUS status = NT_STATUS_OK;
 470
 471         memset(&tok_out, '\0', sizeof(tok_out));
 472
 473         /* Get a ticket for the service@host */
 474         asprintf(&host_princ_s, "%s@%s", service, host);
 475         if (host_princ_s == NULL) {
 476                 return NT_STATUS_NO_MEMORY;
 477         }
 478
 479         input_name.value = host_princ_s;
 480         input_name.length = strlen(host_princ_s) + 1;
 481
 482         ret = gss_import_name(&min,
 483                                 &input_name,
 484                                 GSS_C_NT_HOSTBASED_SERVICE,
 485                                 &srv_name);
 486
 487         if (ret != GSS_S_COMPLETE) {
 488                 SAFE_FREE(host_princ_s);
 489                 return map_nt_error_from_gss(ret, min);
 490         }
 491
 492         if (spnego_blob_in.length == 0) {
 493                 p_tok_in = GSS_C_NO_BUFFER;
 494         } else {
 495                 /* Remove the SPNEGO wrapper */
 496                 if (!spnego_parse_auth_response(spnego_blob_in, status_in, OID_KERBEROS5, &blob_in)) {
 497                         status = NT_STATUS_UNSUCCESSFUL;
 498                         goto fail;
 499                 }
 500                 tok_in.value = blob_in.data;
 501                 tok_in.length = blob_in.length;
 502                 p_tok_in = &tok_in;
 503         }
 504
 505         ret = gss_init_sec_context(&min,
 506                                 GSS_C_NO_CREDENTIAL, /* Use our default cred. */
 507                                 &es->s.gss_state->gss_ctx,
 508                                 srv_name,
 509                                 GSS_C_NO_OID, /* default OID. */
 510                                 GSS_C_MUTUAL_FLAG | GSS_C_REPLAY_FLAG | GSS_C_SEQUENCE_FLAG,
 511                                 GSS_C_INDEFINITE,       /* requested ticket lifetime. */
 512                                 NULL,   /* no channel bindings */
 513                                 p_tok_in,
 514                                 NULL,   /* ignore mech type */
 515                                 &tok_out,
 516                                 &ret_flags,
 517                                 NULL);  /* ignore time_rec */
 518
 519         status = map_nt_error_from_gss(ret, min);
 520         if (!NT_STATUS_IS_OK(status) && !NT_STATUS_EQUAL(status,NT_STATUS_MORE_PROCESSING_REQUIRED)) {
 521                 goto fail;
 522         }
 523
 524         if ((ret_flags & SMB_GSS_REQUIRED_FLAGS) != SMB_GSS_REQUIRED_FLAGS) {
 525                 status = NT_STATUS_ACCESS_DENIED;
 526         }
 527
 528         blob_out = data_blob(tok_out.value, tok_out.length);
 529
 530         /* Wrap in an SPNEGO wrapper */
 531         *p_blob_out = gen_negTokenTarg(krb_mechs, blob_out);
 532
 533   fail:
 534
 535         data_blob_free(&blob_out);
 536         data_blob_free(&blob_in);
 537         SAFE_FREE(host_princ_s);
 538         gss_release_name(&min, &srv_name);
 539         if (tok_out.value) {
 540                 gss_release_buffer(&min, &tok_out);
 541         }
 542         return status;
 543 }
 544
 545 /******************************************************************************
 546  Start a SPNEGO gssapi encryption context.
 547 ******************************************************************************/
 548
 549 NTSTATUS cli_gss_smb_encryption_start(struct cli_state *cli)
 550 {
 551         DATA_BLOB blob_recv = data_blob(NULL, 0);
 552         DATA_BLOB blob_send = data_blob(NULL, 0);
 553         DATA_BLOB param_out = data_blob(NULL, 0);
 554         NTSTATUS status = NT_STATUS_UNSUCCESSFUL;
 555         fstring fqdn;
 556         const char *servicename;
 557         struct smb_trans_enc_state *es = make_cli_enc_state(SMB_TRANS_ENC_GSS);
 558
 559         if (!es) {
 560                 return NT_STATUS_NO_MEMORY;
 561         }
 562
 563         name_to_fqdn(fqdn, cli->desthost);
 564         strlower_m(fqdn);
 565
 566         servicename = "cifs";
 567         status = make_cli_gss_blob(es, servicename, fqdn, NT_STATUS_OK, blob_recv, &blob_send);
 568         if (!NT_STATUS_EQUAL(status,NT_STATUS_MORE_PROCESSING_REQUIRED)) {
 569                 servicename = "host";
 570                 status = make_cli_gss_blob(es, servicename, fqdn, NT_STATUS_OK, blob_recv, &blob_send);
 571                 if (!NT_STATUS_EQUAL(status,NT_STATUS_MORE_PROCESSING_REQUIRED)) {
 572                         goto fail;
 573                 }
 574         }
 575
 576         do {
 577                 data_blob_free(&blob_recv);
 578                 status = enc_blob_send_receive(cli, &blob_send, &blob_recv, &param_out);
 579                 if (param_out.length == 2) {
 580                         es->enc_ctx_num = SVAL(param_out.data, 0);
 581                 }
 582                 data_blob_free(&blob_send);
 583                 status = make_cli_gss_blob(es, servicename, fqdn, status, blob_recv, &blob_send);
 584         } while (NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED));
 585         data_blob_free(&blob_recv);
 586
 587         if (NT_STATUS_IS_OK(status)) {
 588                 /* Replace the old state, if any. */
 589                 if (cli->trans_enc_state) {
 590                         common_free_encryption_state(&cli->trans_enc_state);
 591                 }
 592                 cli->trans_enc_state = es;
 593                 cli->trans_enc_state->enc_on = True;
 594                 es = NULL;
 595         }
 596
 597   fail:
 598
 599         common_free_encryption_state(&es);
 600         return status;
 601 }
 602 #endif