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    Copyright (C) Andrew Bartlett 2011
   7
   8    This program is free software; you can redistribute it and/or modify
   9    it under the terms of the GNU General Public License as published by
  10    the Free Software Foundation; either version 3 of the License, or
  11    (at your option) any later version.
  12
  13    This program is distributed in the hope that it will be useful,
  14    but WITHOUT ANY WARRANTY; without even the implied warranty of
  15    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16    GNU General Public License for more details.
  17
  18    You should have received a copy of the GNU General Public License
  19    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  20 */
  21
  22 #include "includes.h"
  23 #include "libsmb/libsmb.h"
  24 #include "../lib/util/tevent_ntstatus.h"
  25 #include "async_smb.h"
  26 #include "trans2.h"
  27 #include "auth_generic.h"
  28 #include "auth/gensec/gensec.h"
  29 #include "../libcli/smb/smbXcli_base.h"
  30 #include "auth/credentials/credentials.h"
  31 #include "../librpc/gen_ndr/ndr_security.h"
  32
  33 /****************************************************************************
  34  Get UNIX extensions version info.
  35 ****************************************************************************/
  36
  37 struct cli_unix_extensions_version_state {
  38         struct cli_state *cli;
  39         uint16_t setup[1];
  40         uint8_t param[2];
  41         uint16_t major, minor;
  42         uint32_t caplow, caphigh;
  43 };
  44
  45 static void cli_unix_extensions_version_done(struct tevent_req *subreq);
  46
  47 struct tevent_req *cli_unix_extensions_version_send(TALLOC_CTX *mem_ctx,
  48                                                     struct tevent_context *ev,
  49                                                     struct cli_state *cli)
  50 {
  51         struct tevent_req *req, *subreq;
  52         struct cli_unix_extensions_version_state *state;
  53
  54         req = tevent_req_create(mem_ctx, &state,
  55                                 struct cli_unix_extensions_version_state);
  56         if (req == NULL) {
  57                 return NULL;
  58         }
  59         state->cli = cli;
  60         SSVAL(state->setup, 0, TRANSACT2_QFSINFO);
  61         SSVAL(state->param, 0, SMB_QUERY_CIFS_UNIX_INFO);
  62
  63         subreq = cli_trans_send(state, ev, cli, 0, SMBtrans2,
  64                                 NULL, 0, 0, 0,
  65                                 state->setup, 1, 0,
  66                                 state->param, 2, 0,
  67                                 NULL, 0, 560);
  68         if (tevent_req_nomem(subreq, req)) {
  69                 return tevent_req_post(req, ev);
  70         }
  71         tevent_req_set_callback(subreq, cli_unix_extensions_version_done, req);
  72         return req;
  73 }
  74
  75 static void cli_unix_extensions_version_done(struct tevent_req *subreq)
  76 {
  77         struct tevent_req *req = tevent_req_callback_data(
  78                 subreq, struct tevent_req);
  79         struct cli_unix_extensions_version_state *state = tevent_req_data(
  80                 req, struct cli_unix_extensions_version_state);
  81         uint8_t *data;
  82         uint32_t num_data;
  83         NTSTATUS status;
  84
  85         status = cli_trans_recv(subreq, state, NULL, NULL, 0, NULL,
  86                                 NULL, 0, NULL, &data, 12, &num_data);
  87         TALLOC_FREE(subreq);
  88         if (!NT_STATUS_IS_OK(status)) {
  89                 tevent_req_nterror(req, status);
  90                 return;
  91         }
  92
  93         state->major = SVAL(data, 0);
  94         state->minor = SVAL(data, 2);
  95         state->caplow = IVAL(data, 4);
  96         state->caphigh = IVAL(data, 8);
  97         TALLOC_FREE(data);
  98         tevent_req_done(req);
  99 }
 100
 101 NTSTATUS cli_unix_extensions_version_recv(struct tevent_req *req,
 102                                           uint16_t *pmajor, uint16_t *pminor,
 103                                           uint32_t *pcaplow,
 104                                           uint32_t *pcaphigh)
 105 {
 106         struct cli_unix_extensions_version_state *state = tevent_req_data(
 107                 req, struct cli_unix_extensions_version_state);
 108         NTSTATUS status;
 109
 110         if (tevent_req_is_nterror(req, &status)) {
 111                 return status;
 112         }
 113         *pmajor = state->major;
 114         *pminor = state->minor;
 115         *pcaplow = state->caplow;
 116         *pcaphigh = state->caphigh;
 117         state->cli->server_posix_capabilities = *pcaplow;
 118         return NT_STATUS_OK;
 119 }
 120
 121 NTSTATUS cli_unix_extensions_version(struct cli_state *cli, uint16_t *pmajor,
 122                                      uint16_t *pminor, uint32_t *pcaplow,
 123                                      uint32_t *pcaphigh)
 124 {
 125         TALLOC_CTX *frame = talloc_stackframe();
 126         struct tevent_context *ev;
 127         struct tevent_req *req;
 128         NTSTATUS status = NT_STATUS_OK;
 129
 130         if (smbXcli_conn_has_async_calls(cli->conn)) {
 131                 /*
 132                  * Can't use sync call while an async call is in flight
 133                  */
 134                 status = NT_STATUS_INVALID_PARAMETER;
 135                 goto fail;
 136         }
 137
 138         ev = samba_tevent_context_init(frame);
 139         if (ev == NULL) {
 140                 status = NT_STATUS_NO_MEMORY;
 141                 goto fail;
 142         }
 143
 144         req = cli_unix_extensions_version_send(frame, ev, cli);
 145         if (req == NULL) {
 146                 status = NT_STATUS_NO_MEMORY;
 147                 goto fail;
 148         }
 149
 150         if (!tevent_req_poll_ntstatus(req, ev, &status)) {
 151                 goto fail;
 152         }
 153
 154         status = cli_unix_extensions_version_recv(req, pmajor, pminor, pcaplow,
 155                                                   pcaphigh);
 156  fail:
 157         TALLOC_FREE(frame);
 158         return status;
 159 }
 160
 161 /****************************************************************************
 162  Set UNIX extensions capabilities.
 163 ****************************************************************************/
 164
 165 struct cli_set_unix_extensions_capabilities_state {
 166         struct cli_state *cli;
 167         uint16_t setup[1];
 168         uint8_t param[4];
 169         uint8_t data[12];
 170 };
 171
 172 static void cli_set_unix_extensions_capabilities_done(
 173         struct tevent_req *subreq);
 174
 175 struct tevent_req *cli_set_unix_extensions_capabilities_send(
 176         TALLOC_CTX *mem_ctx, struct tevent_context *ev, struct cli_state *cli,
 177         uint16_t major, uint16_t minor, uint32_t caplow, uint32_t caphigh)
 178 {
 179         struct tevent_req *req, *subreq;
 180         struct cli_set_unix_extensions_capabilities_state *state;
 181
 182         req = tevent_req_create(
 183                 mem_ctx, &state,
 184                 struct cli_set_unix_extensions_capabilities_state);
 185         if (req == NULL) {
 186                 return NULL;
 187         }
 188
 189         state->cli = cli;
 190         SSVAL(state->setup+0, 0, TRANSACT2_SETFSINFO);
 191
 192         SSVAL(state->param, 0, 0);
 193         SSVAL(state->param, 2, SMB_SET_CIFS_UNIX_INFO);
 194
 195         SSVAL(state->data, 0, major);
 196         SSVAL(state->data, 2, minor);
 197         SIVAL(state->data, 4, caplow);
 198         SIVAL(state->data, 8, caphigh);
 199
 200         subreq = cli_trans_send(state, ev, cli, 0, SMBtrans2,
 201                                 NULL, 0, 0, 0,
 202                                 state->setup, 1, 0,
 203                                 state->param, 4, 0,
 204                                 state->data, 12, 560);
 205         if (tevent_req_nomem(subreq, req)) {
 206                 return tevent_req_post(req, ev);
 207         }
 208         tevent_req_set_callback(
 209                 subreq, cli_set_unix_extensions_capabilities_done, req);
 210         return req;
 211 }
 212
 213 static void cli_set_unix_extensions_capabilities_done(
 214         struct tevent_req *subreq)
 215 {
 216         struct tevent_req *req = tevent_req_callback_data(
 217                 subreq, struct tevent_req);
 218         struct cli_set_unix_extensions_capabilities_state *state = tevent_req_data(
 219                 req, struct cli_set_unix_extensions_capabilities_state);
 220
 221         NTSTATUS status = cli_trans_recv(subreq, NULL, NULL, NULL, 0, NULL,
 222                                          NULL, 0, NULL, NULL, 0, NULL);
 223         if (NT_STATUS_IS_OK(status)) {
 224                 state->cli->requested_posix_capabilities = IVAL(state->data, 4);
 225         }
 226         tevent_req_simple_finish_ntstatus(subreq, status);
 227 }
 228
 229 NTSTATUS cli_set_unix_extensions_capabilities_recv(struct tevent_req *req)
 230 {
 231         return tevent_req_simple_recv_ntstatus(req);
 232 }
 233
 234 NTSTATUS cli_set_unix_extensions_capabilities(struct cli_state *cli,
 235                                               uint16_t major, uint16_t minor,
 236                                               uint32_t caplow, uint32_t caphigh)
 237 {
 238         struct tevent_context *ev;
 239         struct tevent_req *req;
 240         NTSTATUS status = NT_STATUS_NO_MEMORY;
 241
 242         if (smbXcli_conn_has_async_calls(cli->conn)) {
 243                 return NT_STATUS_INVALID_PARAMETER;
 244         }
 245         ev = samba_tevent_context_init(talloc_tos());
 246         if (ev == NULL) {
 247                 goto fail;
 248         }
 249         req = cli_set_unix_extensions_capabilities_send(
 250                 ev, ev, cli, major, minor, caplow, caphigh);
 251         if (req == NULL) {
 252                 goto fail;
 253         }
 254         if (!tevent_req_poll_ntstatus(req, ev, &status)) {
 255                 goto fail;
 256         }
 257         status = cli_set_unix_extensions_capabilities_recv(req);
 258 fail:
 259         TALLOC_FREE(ev);
 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, 0, 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 (smbXcli_conn_protocol(cli->conn) >= PROTOCOL_SMB2_02) {
 340                 return cli_smb2_get_fs_attr_info(cli, fs_attr);
 341         }
 342
 343         if (smbXcli_conn_has_async_calls(cli->conn)) {
 344                 return NT_STATUS_INVALID_PARAMETER;
 345         }
 346         ev = samba_tevent_context_init(talloc_tos());
 347         if (ev == NULL) {
 348                 goto fail;
 349         }
 350         req = cli_get_fs_attr_info_send(ev, ev, cli);
 351         if (req == NULL) {
 352                 goto fail;
 353         }
 354         if (!tevent_req_poll_ntstatus(req, ev, &status)) {
 355                 goto fail;
 356         }
 357         status = cli_get_fs_attr_info_recv(req, fs_attr);
 358 fail:
 359         TALLOC_FREE(ev);
 360         return status;
 361 }
 362
 363 NTSTATUS cli_get_fs_volume_info(struct cli_state *cli,
 364                                 TALLOC_CTX *mem_ctx,
 365                                 char **_volume_name,
 366                                 uint32_t *pserial_number,
 367                                 time_t *pdate)
 368 {
 369         NTSTATUS status;
 370         uint16_t recv_flags2;
 371         uint16_t setup[1];
 372         uint8_t param[2];
 373         uint8_t *rdata;
 374         uint32_t rdata_count;
 375         unsigned int nlen;
 376         char *volume_name = NULL;
 377
 378         if (smbXcli_conn_protocol(cli->conn) >= PROTOCOL_SMB2_02) {
 379                 return cli_smb2_get_fs_volume_info(cli,
 380                                                 mem_ctx,
 381                                                 _volume_name,
 382                                                 pserial_number,
 383                                                 pdate);
 384         }
 385
 386         SSVAL(setup, 0, TRANSACT2_QFSINFO);
 387         SSVAL(param,0,SMB_QUERY_FS_VOLUME_INFO);
 388
 389         status = cli_trans(talloc_tos(), cli, SMBtrans2,
 390                            NULL, 0, 0, 0,
 391                            setup, 1, 0,
 392                            param, 2, 0,
 393                            NULL, 0, 560,
 394                            &recv_flags2,
 395                            NULL, 0, NULL,
 396                            NULL, 0, NULL,
 397                            &rdata, 18, &rdata_count);
 398         if (!NT_STATUS_IS_OK(status)) {
 399                 return status;
 400         }
 401
 402         if (pdate) {
 403                 struct timespec ts;
 404                 ts = interpret_long_date((char *)rdata);
 405                 *pdate = ts.tv_sec;
 406         }
 407         if (pserial_number) {
 408                 *pserial_number = IVAL(rdata,8);
 409         }
 410         nlen = IVAL(rdata,12);
 411         if (nlen > (rdata_count - 18)) {
 412                 TALLOC_FREE(rdata);
 413                 return NT_STATUS_INVALID_NETWORK_RESPONSE;
 414         }
 415
 416         pull_string_talloc(mem_ctx,
 417                            (const char *)rdata,
 418                            recv_flags2,
 419                            &volume_name,
 420                            rdata + 18,
 421                            nlen, STR_UNICODE);
 422         if (volume_name == NULL) {
 423                 status = map_nt_error_from_unix(errno);
 424                 TALLOC_FREE(rdata);
 425                 return status;
 426         }
 427
 428         /* todo: but not yet needed
 429          *       return the other stuff
 430          */
 431
 432         *_volume_name = volume_name;
 433         TALLOC_FREE(rdata);
 434         return NT_STATUS_OK;
 435 }
 436
 437 NTSTATUS cli_get_fs_full_size_info(struct cli_state *cli,
 438                                    uint64_t *total_allocation_units,
 439                                    uint64_t *caller_allocation_units,
 440                                    uint64_t *actual_allocation_units,
 441                                    uint64_t *sectors_per_allocation_unit,
 442                                    uint64_t *bytes_per_sector)
 443 {
 444         uint16_t setup[1];
 445         uint8_t param[2];
 446         uint8_t *rdata = NULL;
 447         uint32_t rdata_count;
 448         NTSTATUS status;
 449
 450         if (smbXcli_conn_protocol(cli->conn) >= PROTOCOL_SMB2_02) {
 451                 return cli_smb2_get_fs_full_size_info(cli,
 452                                                 total_allocation_units,
 453                                                 caller_allocation_units,
 454                                                 actual_allocation_units,
 455                                                 sectors_per_allocation_unit,
 456                                                 bytes_per_sector);
 457         }
 458
 459         SSVAL(setup, 0, TRANSACT2_QFSINFO);
 460         SSVAL(param, 0, SMB_FS_FULL_SIZE_INFORMATION);
 461
 462         status = cli_trans(talloc_tos(), cli, SMBtrans2,
 463                            NULL, 0, 0, 0,
 464                            setup, 1, 0, /* setup */
 465                            param, 2, 0,  /* param */
 466                            NULL, 0, 560, /* data */
 467                            NULL,
 468                            NULL, 0, NULL, /* rsetup */
 469                            NULL, 0, NULL, /* rparam */
 470                            &rdata, 32, &rdata_count);  /* rdata */
 471         if (!NT_STATUS_IS_OK(status)) {
 472                 goto fail;
 473         }
 474
 475         if (total_allocation_units) {
 476                 *total_allocation_units = BIG_UINT(rdata, 0);
 477         }
 478         if (caller_allocation_units) {
 479                 *caller_allocation_units = BIG_UINT(rdata,8);
 480         }
 481         if (actual_allocation_units) {
 482                 *actual_allocation_units = BIG_UINT(rdata,16);
 483         }
 484         if (sectors_per_allocation_unit) {
 485                 *sectors_per_allocation_unit = IVAL(rdata,24);
 486         }
 487         if (bytes_per_sector) {
 488                 *bytes_per_sector = IVAL(rdata,28);
 489         }
 490
 491 fail:
 492         TALLOC_FREE(rdata);
 493         return status;
 494 }
 495
 496 NTSTATUS cli_get_posix_fs_info(struct cli_state *cli,
 497                                uint32_t *optimal_transfer_size,
 498                                uint32_t *block_size,
 499                                uint64_t *total_blocks,
 500                                uint64_t *blocks_available,
 501                                uint64_t *user_blocks_available,
 502                                uint64_t *total_file_nodes,
 503                                uint64_t *free_file_nodes,
 504                                uint64_t *fs_identifier)
 505 {
 506         uint16_t setup[1];
 507         uint8_t param[2];
 508         uint8_t *rdata = NULL;
 509         uint32_t rdata_count;
 510         NTSTATUS status;
 511
 512         SSVAL(setup, 0, TRANSACT2_QFSINFO);
 513         SSVAL(param,0,SMB_QUERY_POSIX_FS_INFO);
 514
 515         status = cli_trans(talloc_tos(), cli, SMBtrans2, NULL, 0, 0, 0,
 516                            setup, 1, 0,
 517                            param, 2, 0,
 518                            NULL, 0, 560,
 519                            NULL,
 520                            NULL, 0, NULL, /* rsetup */
 521                            NULL, 0, NULL, /* rparam */
 522                            &rdata, 56, &rdata_count);
 523         if (!NT_STATUS_IS_OK(status)) {
 524                 return status;
 525         }
 526
 527         if (optimal_transfer_size) {
 528                 *optimal_transfer_size = IVAL(rdata, 0);
 529         }
 530         if (block_size) {
 531                 *block_size = IVAL(rdata,4);
 532         }
 533         if (total_blocks) {
 534                 *total_blocks = BIG_UINT(rdata,8);
 535         }
 536         if (blocks_available) {
 537                 *blocks_available = BIG_UINT(rdata,16);
 538         }
 539         if (user_blocks_available) {
 540                 *user_blocks_available = BIG_UINT(rdata,24);
 541         }
 542         if (total_file_nodes) {
 543                 *total_file_nodes = BIG_UINT(rdata,32);
 544         }
 545         if (free_file_nodes) {
 546                 *free_file_nodes = BIG_UINT(rdata,40);
 547         }
 548         if (fs_identifier) {
 549                 *fs_identifier = BIG_UINT(rdata,48);
 550         }
 551         return NT_STATUS_OK;
 552 }
 553
 554 /****************************************************************************
 555  Do a UNIX extensions SMB_QUERY_POSIX_WHOAMI call.
 556 ****************************************************************************/
 557
 558 struct posix_whoami_state {
 559         uint16_t setup[1];
 560         uint8_t param[2];
 561         uint32_t max_rdata;
 562         bool guest;
 563         uint64_t uid;
 564         uint64_t gid;
 565         uint32_t num_gids;
 566         uint64_t *gids;
 567         uint32_t num_sids;
 568         struct dom_sid *sids;
 569 };
 570
 571 static void cli_posix_whoami_done(struct tevent_req *subreq);
 572
 573 struct tevent_req *cli_posix_whoami_send(TALLOC_CTX *mem_ctx,
 574                                         struct tevent_context *ev,
 575                                         struct cli_state *cli)
 576 {
 577         struct tevent_req *req = NULL, *subreq = NULL;
 578         struct posix_whoami_state *state = NULL;
 579
 580         req = tevent_req_create(mem_ctx, &state, struct posix_whoami_state);
 581         if (req == NULL) {
 582                 return NULL;
 583         }
 584
 585         /* Setup setup word. */
 586         SSVAL(state->setup, 0, TRANSACT2_QFSINFO);
 587         SSVAL(state->param, 0, SMB_QUERY_POSIX_WHOAMI);
 588
 589         state->max_rdata = 62*1024;
 590
 591         subreq = cli_trans_send(state,                  /* mem ctx. */
 592                                 ev,                     /* event ctx. */
 593                                 cli,                    /* cli_state. */
 594                                 0,                      /* additional_flags2 */
 595                                 SMBtrans2,              /* cmd. */
 596                                 NULL,                   /* pipe name. */
 597                                 -1,                     /* fid. */
 598                                 0,                      /* function. */
 599                                 0,                      /* flags. */
 600                                 state->setup,           /* setup. */
 601                                 1,                      /* num setup uint16_t words. */
 602                                 0,                      /* max returned setup. */
 603                                 state->param,           /* param. */
 604                                 2,                      /* num param. */
 605                                 0,                      /* max returned param. */
 606                                 NULL,                   /* data. */
 607                                 0,                      /* num data. */
 608                                 state->max_rdata);      /* max returned data. */
 609
 610         if (tevent_req_nomem(subreq, req)) {
 611                 return tevent_req_post(req, ev);
 612         }
 613         tevent_req_set_callback(subreq, cli_posix_whoami_done, req);
 614         return req;
 615 }
 616
 617 static void cli_posix_whoami_done(struct tevent_req *subreq)
 618 {
 619         struct tevent_req *req = tevent_req_callback_data(
 620                         subreq, struct tevent_req);
 621         struct posix_whoami_state *state = tevent_req_data(
 622                         req, struct posix_whoami_state);
 623         uint8_t *rdata = NULL;
 624         uint8_t *p = NULL;
 625         uint32_t num_rdata = 0;
 626         uint32_t i;
 627         NTSTATUS status;
 628
 629         status = cli_trans_recv(subreq,
 630                                 state,
 631                                 NULL,
 632                                 NULL,
 633                                 0,
 634                                 NULL,
 635                                 NULL,
 636                                 0,
 637                                 NULL,
 638                                 &rdata,
 639                                 40,
 640                                 &num_rdata);
 641         TALLOC_FREE(subreq);
 642         if (tevent_req_nterror(req, status)) {
 643                 return;
 644         }
 645
 646         /*
 647          * Not strictly needed - cli_trans_recv()
 648          * will ensure at least 40 bytes here. Added
 649          * as more of a reminder to be careful when
 650          * parsing network packets in C.
 651          */
 652
 653         if (num_rdata < 40) {
 654                 tevent_req_nterror(req, NT_STATUS_INVALID_NETWORK_RESPONSE);
 655                 return;
 656         }
 657
 658         state->guest = (IVAL(rdata, 0) & SMB_WHOAMI_GUEST);
 659         state->uid = BVAL(rdata, 8);
 660         state->gid = BVAL(rdata, 16);
 661         state->num_gids = IVAL(rdata, 24);
 662         state->num_sids = IVAL(rdata, 28);
 663
 664         state->gids = talloc_array(state, uint64_t, state->num_gids);
 665         if (tevent_req_nomem(state->gids, req)) {
 666                 return;
 667         }
 668         state->sids = talloc_array(state, struct dom_sid, state->num_sids);
 669         if (tevent_req_nomem(state->sids, req)) {
 670                 return;
 671         }
 672
 673         p = rdata + 40;
 674
 675         for (i = 0; i < state->num_gids; i++) {
 676                 if (p + 8 > rdata + num_rdata) {
 677                         tevent_req_nterror(req,
 678                                 NT_STATUS_INVALID_NETWORK_RESPONSE);
 679                         return;
 680                 }
 681                 state->gids[i] = BVAL(p, 0);
 682                 p += 8;
 683         }
 684
 685         num_rdata -= (p - rdata);
 686
 687         for (i = 0; i < state->num_sids; i++) {
 688                 size_t sid_size;
 689                 DATA_BLOB in = data_blob_const(p, num_rdata);
 690                 enum ndr_err_code ndr_err;
 691
 692                 ndr_err = ndr_pull_struct_blob(&in,
 693                                 state,
 694                                 &state->sids[i],
 695                                 (ndr_pull_flags_fn_t)ndr_pull_dom_sid);
 696                 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
 697                         tevent_req_nterror(req,
 698                                 NT_STATUS_INVALID_NETWORK_RESPONSE);
 699                         return;
 700                 }
 701
 702                 sid_size = ndr_size_dom_sid(&state->sids[i], 0);
 703
 704                 if (sid_size > num_rdata) {
 705                         tevent_req_nterror(req,
 706                                 NT_STATUS_INVALID_NETWORK_RESPONSE);
 707                         return;
 708                 }
 709
 710                 p += sid_size;
 711                 num_rdata -= sid_size;
 712         }
 713         tevent_req_done(req);
 714 }
 715
 716 NTSTATUS cli_posix_whoami_recv(struct tevent_req *req,
 717                         TALLOC_CTX *mem_ctx,
 718                         uint64_t *puid,
 719                         uint64_t *pgid,
 720                         uint32_t *pnum_gids,
 721                         uint64_t **pgids,
 722                         uint32_t *pnum_sids,
 723                         struct dom_sid **psids,
 724                         bool *pguest)
 725 {
 726         NTSTATUS status;
 727         struct posix_whoami_state *state = tevent_req_data(
 728                         req, struct posix_whoami_state);
 729
 730         if (tevent_req_is_nterror(req, &status)) {
 731                 return status;
 732         }
 733
 734         if (puid) {
 735                 *puid = state->uid;
 736         }
 737         if (pgid) {
 738                 *pgid = state->gid;
 739         }
 740         if (pnum_gids) {
 741                 *pnum_gids = state->num_gids;
 742         }
 743         if (pgids) {
 744                 *pgids = talloc_move(mem_ctx, &state->gids);
 745         }
 746         if (pnum_sids) {
 747                 *pnum_sids = state->num_sids;
 748         }
 749         if (psids) {
 750                 *psids = talloc_move(mem_ctx, &state->sids);
 751         }
 752         if (pguest) {
 753                 *pguest = state->guest;
 754         }
 755         return NT_STATUS_OK;
 756 }
 757
 758 NTSTATUS cli_posix_whoami(struct cli_state *cli,
 759                         TALLOC_CTX *mem_ctx,
 760                         uint64_t *puid,
 761                         uint64_t *pgid,
 762                         uint32_t *num_gids,
 763                         uint64_t **gids,
 764                         uint32_t *num_sids,
 765                         struct dom_sid **sids,
 766                         bool *pguest)
 767 {
 768         TALLOC_CTX *frame = talloc_stackframe();
 769         struct tevent_context *ev = NULL;
 770         struct tevent_req *req = NULL;
 771         NTSTATUS status = NT_STATUS_OK;
 772
 773         if (smbXcli_conn_has_async_calls(cli->conn)) {
 774                 /*
 775                  * Can't use sync call while an async call is in flight
 776                  */
 777                 status = NT_STATUS_INVALID_PARAMETER;
 778                 goto fail;
 779         }
 780
 781         ev = samba_tevent_context_init(frame);
 782         if (ev == NULL) {
 783                 status = NT_STATUS_NO_MEMORY;
 784                 goto fail;
 785         }
 786
 787         req = cli_posix_whoami_send(frame,
 788                                 ev,
 789                                 cli);
 790         if (req == NULL) {
 791                 status = NT_STATUS_NO_MEMORY;
 792                 goto fail;
 793         }
 794
 795         if (!tevent_req_poll_ntstatus(req, ev, &status)) {
 796                 goto fail;
 797         }
 798
 799         status = cli_posix_whoami_recv(req,
 800                         mem_ctx,
 801                         puid,
 802                         pgid,
 803                         num_gids,
 804                         gids,
 805                         num_sids,
 806                         sids,
 807                         pguest);
 808
 809  fail:
 810         TALLOC_FREE(frame);
 811         return status;
 812 }