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 #include "libcli/security/dom_sid.h"
  33
  34 /****************************************************************************
  35  Get UNIX extensions version info.
  36 ****************************************************************************/
  37
  38 struct cli_unix_extensions_version_state {
  39         struct cli_state *cli;
  40         uint16_t setup[1];
  41         uint8_t param[2];
  42         uint16_t major, minor;
  43         uint32_t caplow, caphigh;
  44 };
  45
  46 static void cli_unix_extensions_version_done(struct tevent_req *subreq);
  47
  48 struct tevent_req *cli_unix_extensions_version_send(TALLOC_CTX *mem_ctx,
  49                                                     struct tevent_context *ev,
  50                                                     struct cli_state *cli)
  51 {
  52         struct tevent_req *req, *subreq;
  53         struct cli_unix_extensions_version_state *state;
  54
  55         req = tevent_req_create(mem_ctx, &state,
  56                                 struct cli_unix_extensions_version_state);
  57         if (req == NULL) {
  58                 return NULL;
  59         }
  60         state->cli = cli;
  61         SSVAL(state->setup, 0, TRANSACT2_QFSINFO);
  62         SSVAL(state->param, 0, SMB_QUERY_CIFS_UNIX_INFO);
  63
  64         subreq = cli_trans_send(state, ev, cli, 0, SMBtrans2,
  65                                 NULL, 0, 0, 0,
  66                                 state->setup, 1, 0,
  67                                 state->param, 2, 0,
  68                                 NULL, 0, 560);
  69         if (tevent_req_nomem(subreq, req)) {
  70                 return tevent_req_post(req, ev);
  71         }
  72         tevent_req_set_callback(subreq, cli_unix_extensions_version_done, req);
  73         return req;
  74 }
  75
  76 static void cli_unix_extensions_version_done(struct tevent_req *subreq)
  77 {
  78         struct tevent_req *req = tevent_req_callback_data(
  79                 subreq, struct tevent_req);
  80         struct cli_unix_extensions_version_state *state = tevent_req_data(
  81                 req, struct cli_unix_extensions_version_state);
  82         uint8_t *data;
  83         uint32_t num_data;
  84         NTSTATUS status;
  85
  86         status = cli_trans_recv(subreq, state, NULL, NULL, 0, NULL,
  87                                 NULL, 0, NULL, &data, 12, &num_data);
  88         TALLOC_FREE(subreq);
  89         if (!NT_STATUS_IS_OK(status)) {
  90                 tevent_req_nterror(req, status);
  91                 return;
  92         }
  93
  94         state->major = SVAL(data, 0);
  95         state->minor = SVAL(data, 2);
  96         state->caplow = IVAL(data, 4);
  97         state->caphigh = IVAL(data, 8);
  98         TALLOC_FREE(data);
  99         tevent_req_done(req);
 100 }
 101
 102 NTSTATUS cli_unix_extensions_version_recv(struct tevent_req *req,
 103                                           uint16_t *pmajor, uint16_t *pminor,
 104                                           uint32_t *pcaplow,
 105                                           uint32_t *pcaphigh)
 106 {
 107         struct cli_unix_extensions_version_state *state = tevent_req_data(
 108                 req, struct cli_unix_extensions_version_state);
 109         NTSTATUS status;
 110
 111         if (tevent_req_is_nterror(req, &status)) {
 112                 return status;
 113         }
 114         *pmajor = state->major;
 115         *pminor = state->minor;
 116         *pcaplow = state->caplow;
 117         *pcaphigh = state->caphigh;
 118         state->cli->server_posix_capabilities = *pcaplow;
 119         return NT_STATUS_OK;
 120 }
 121
 122 NTSTATUS cli_unix_extensions_version(struct cli_state *cli, uint16_t *pmajor,
 123                                      uint16_t *pminor, uint32_t *pcaplow,
 124                                      uint32_t *pcaphigh)
 125 {
 126         TALLOC_CTX *frame = talloc_stackframe();
 127         struct tevent_context *ev;
 128         struct tevent_req *req;
 129         NTSTATUS status = NT_STATUS_OK;
 130
 131         if (smbXcli_conn_has_async_calls(cli->conn)) {
 132                 /*
 133                  * Can't use sync call while an async call is in flight
 134                  */
 135                 status = NT_STATUS_INVALID_PARAMETER;
 136                 goto fail;
 137         }
 138
 139         ev = samba_tevent_context_init(frame);
 140         if (ev == NULL) {
 141                 status = NT_STATUS_NO_MEMORY;
 142                 goto fail;
 143         }
 144
 145         req = cli_unix_extensions_version_send(frame, ev, cli);
 146         if (req == NULL) {
 147                 status = NT_STATUS_NO_MEMORY;
 148                 goto fail;
 149         }
 150
 151         if (!tevent_req_poll_ntstatus(req, ev, &status)) {
 152                 goto fail;
 153         }
 154
 155         status = cli_unix_extensions_version_recv(req, pmajor, pminor, pcaplow,
 156                                                   pcaphigh);
 157  fail:
 158         TALLOC_FREE(frame);
 159         return status;
 160 }
 161
 162 /****************************************************************************
 163  Set UNIX extensions capabilities.
 164 ****************************************************************************/
 165
 166 struct cli_set_unix_extensions_capabilities_state {
 167         struct cli_state *cli;
 168         uint16_t setup[1];
 169         uint8_t param[4];
 170         uint8_t data[12];
 171 };
 172
 173 static void cli_set_unix_extensions_capabilities_done(
 174         struct tevent_req *subreq);
 175
 176 struct tevent_req *cli_set_unix_extensions_capabilities_send(
 177         TALLOC_CTX *mem_ctx, struct tevent_context *ev, struct cli_state *cli,
 178         uint16_t major, uint16_t minor, uint32_t caplow, uint32_t caphigh)
 179 {
 180         struct tevent_req *req, *subreq;
 181         struct cli_set_unix_extensions_capabilities_state *state;
 182
 183         req = tevent_req_create(
 184                 mem_ctx, &state,
 185                 struct cli_set_unix_extensions_capabilities_state);
 186         if (req == NULL) {
 187                 return NULL;
 188         }
 189
 190         state->cli = cli;
 191         SSVAL(state->setup+0, 0, TRANSACT2_SETFSINFO);
 192
 193         SSVAL(state->param, 0, 0);
 194         SSVAL(state->param, 2, SMB_SET_CIFS_UNIX_INFO);
 195
 196         SSVAL(state->data, 0, major);
 197         SSVAL(state->data, 2, minor);
 198         SIVAL(state->data, 4, caplow);
 199         SIVAL(state->data, 8, caphigh);
 200
 201         subreq = cli_trans_send(state, ev, cli, 0, SMBtrans2,
 202                                 NULL, 0, 0, 0,
 203                                 state->setup, 1, 0,
 204                                 state->param, 4, 0,
 205                                 state->data, 12, 560);
 206         if (tevent_req_nomem(subreq, req)) {
 207                 return tevent_req_post(req, ev);
 208         }
 209         tevent_req_set_callback(
 210                 subreq, cli_set_unix_extensions_capabilities_done, req);
 211         return req;
 212 }
 213
 214 static void cli_set_unix_extensions_capabilities_done(
 215         struct tevent_req *subreq)
 216 {
 217         struct tevent_req *req = tevent_req_callback_data(
 218                 subreq, struct tevent_req);
 219         struct cli_set_unix_extensions_capabilities_state *state = tevent_req_data(
 220                 req, struct cli_set_unix_extensions_capabilities_state);
 221
 222         NTSTATUS status = cli_trans_recv(subreq, NULL, NULL, NULL, 0, NULL,
 223                                          NULL, 0, NULL, NULL, 0, NULL);
 224         if (NT_STATUS_IS_OK(status)) {
 225                 state->cli->requested_posix_capabilities = IVAL(state->data, 4);
 226         }
 227         tevent_req_simple_finish_ntstatus(subreq, status);
 228 }
 229
 230 NTSTATUS cli_set_unix_extensions_capabilities_recv(struct tevent_req *req)
 231 {
 232         return tevent_req_simple_recv_ntstatus(req);
 233 }
 234
 235 NTSTATUS cli_set_unix_extensions_capabilities(struct cli_state *cli,
 236                                               uint16_t major, uint16_t minor,
 237                                               uint32_t caplow, uint32_t caphigh)
 238 {
 239         struct tevent_context *ev;
 240         struct tevent_req *req;
 241         NTSTATUS status = NT_STATUS_NO_MEMORY;
 242
 243         if (smbXcli_conn_has_async_calls(cli->conn)) {
 244                 return NT_STATUS_INVALID_PARAMETER;
 245         }
 246         ev = samba_tevent_context_init(talloc_tos());
 247         if (ev == NULL) {
 248                 goto fail;
 249         }
 250         req = cli_set_unix_extensions_capabilities_send(
 251                 ev, ev, cli, major, minor, caplow, caphigh);
 252         if (req == NULL) {
 253                 goto fail;
 254         }
 255         if (!tevent_req_poll_ntstatus(req, ev, &status)) {
 256                 goto fail;
 257         }
 258         status = cli_set_unix_extensions_capabilities_recv(req);
 259 fail:
 260         TALLOC_FREE(ev);
 261         return status;
 262 }
 263
 264 struct cli_get_fs_attr_info_state {
 265         uint16_t setup[1];
 266         uint8_t param[2];
 267         uint32_t fs_attr;
 268 };
 269
 270 static void cli_get_fs_attr_info_done(struct tevent_req *subreq);
 271
 272 struct tevent_req *cli_get_fs_attr_info_send(TALLOC_CTX *mem_ctx,
 273                                              struct tevent_context *ev,
 274                                              struct cli_state *cli)
 275 {
 276         struct tevent_req *subreq, *req;
 277         struct cli_get_fs_attr_info_state *state;
 278
 279         req = tevent_req_create(mem_ctx, &state,
 280                                 struct cli_get_fs_attr_info_state);
 281         if (req == NULL) {
 282                 return NULL;
 283         }
 284         SSVAL(state->setup+0, 0, TRANSACT2_QFSINFO);
 285         SSVAL(state->param+0, 0, SMB_QUERY_FS_ATTRIBUTE_INFO);
 286
 287         subreq = cli_trans_send(state, ev, cli, 0, SMBtrans2,
 288                                 NULL, 0, 0, 0,
 289                                 state->setup, 1, 0,
 290                                 state->param, 2, 0,
 291                                 NULL, 0, 560);
 292         if (tevent_req_nomem(subreq, req)) {
 293                 return tevent_req_post(req, ev);
 294         }
 295         tevent_req_set_callback(subreq, cli_get_fs_attr_info_done, req);
 296         return req;
 297 }
 298
 299 static void cli_get_fs_attr_info_done(struct tevent_req *subreq)
 300 {
 301         struct tevent_req *req = tevent_req_callback_data(
 302                 subreq, struct tevent_req);
 303         struct cli_get_fs_attr_info_state *state = tevent_req_data(
 304                 req, struct cli_get_fs_attr_info_state);
 305         uint8_t *data;
 306         uint32_t num_data;
 307         NTSTATUS status;
 308
 309         status = cli_trans_recv(subreq, talloc_tos(), NULL, NULL, 0, NULL,
 310                                 NULL, 0, NULL, &data, 12, &num_data);
 311         TALLOC_FREE(subreq);
 312         if (!NT_STATUS_IS_OK(status)) {
 313                 tevent_req_nterror(req, status);
 314                 return;
 315         }
 316         state->fs_attr = IVAL(data, 0);
 317         TALLOC_FREE(data);
 318         tevent_req_done(req);
 319 }
 320
 321 NTSTATUS cli_get_fs_attr_info_recv(struct tevent_req *req, uint32_t *fs_attr)
 322 {
 323         struct cli_get_fs_attr_info_state *state = tevent_req_data(
 324                 req, struct cli_get_fs_attr_info_state);
 325         NTSTATUS status;
 326
 327         if (tevent_req_is_nterror(req, &status)) {
 328                 return status;
 329         }
 330         *fs_attr = state->fs_attr;
 331         return NT_STATUS_OK;
 332 }
 333
 334 NTSTATUS cli_get_fs_attr_info(struct cli_state *cli, uint32_t *fs_attr)
 335 {
 336         struct tevent_context *ev;
 337         struct tevent_req *req;
 338         NTSTATUS status = NT_STATUS_NO_MEMORY;
 339
 340         if (smbXcli_conn_protocol(cli->conn) >= PROTOCOL_SMB2_02) {
 341                 return cli_smb2_get_fs_attr_info(cli, fs_attr);
 342         }
 343
 344         if (smbXcli_conn_has_async_calls(cli->conn)) {
 345                 return NT_STATUS_INVALID_PARAMETER;
 346         }
 347         ev = samba_tevent_context_init(talloc_tos());
 348         if (ev == NULL) {
 349                 goto fail;
 350         }
 351         req = cli_get_fs_attr_info_send(ev, ev, cli);
 352         if (req == NULL) {
 353                 goto fail;
 354         }
 355         if (!tevent_req_poll_ntstatus(req, ev, &status)) {
 356                 goto fail;
 357         }
 358         status = cli_get_fs_attr_info_recv(req, fs_attr);
 359 fail:
 360         TALLOC_FREE(ev);
 361         return status;
 362 }
 363
 364 NTSTATUS cli_get_fs_volume_info(struct cli_state *cli,
 365                                 TALLOC_CTX *mem_ctx,
 366                                 char **_volume_name,
 367                                 uint32_t *pserial_number,
 368                                 time_t *pdate)
 369 {
 370         NTSTATUS status;
 371         uint16_t recv_flags2;
 372         uint16_t setup[1];
 373         uint8_t param[2];
 374         uint8_t *rdata;
 375         uint32_t rdata_count;
 376         unsigned int nlen;
 377         char *volume_name = NULL;
 378
 379         if (smbXcli_conn_protocol(cli->conn) >= PROTOCOL_SMB2_02) {
 380                 return cli_smb2_get_fs_volume_info(cli,
 381                                                 mem_ctx,
 382                                                 _volume_name,
 383                                                 pserial_number,
 384                                                 pdate);
 385         }
 386
 387         SSVAL(setup, 0, TRANSACT2_QFSINFO);
 388         SSVAL(param,0,SMB_QUERY_FS_VOLUME_INFO);
 389
 390         status = cli_trans(talloc_tos(), cli, SMBtrans2,
 391                            NULL, 0, 0, 0,
 392                            setup, 1, 0,
 393                            param, 2, 0,
 394                            NULL, 0, 560,
 395                            &recv_flags2,
 396                            NULL, 0, NULL,
 397                            NULL, 0, NULL,
 398                            &rdata, 18, &rdata_count);
 399         if (!NT_STATUS_IS_OK(status)) {
 400                 return status;
 401         }
 402
 403         if (pdate) {
 404                 struct timespec ts;
 405                 ts = interpret_long_date((char *)rdata);
 406                 *pdate = ts.tv_sec;
 407         }
 408         if (pserial_number) {
 409                 *pserial_number = IVAL(rdata,8);
 410         }
 411         nlen = IVAL(rdata,12);
 412         if (nlen > (rdata_count - 18)) {
 413                 TALLOC_FREE(rdata);
 414                 return NT_STATUS_INVALID_NETWORK_RESPONSE;
 415         }
 416
 417         clistr_pull_talloc(mem_ctx,
 418                            (const char *)rdata,
 419                            recv_flags2,
 420                            &volume_name,
 421                            rdata + 18,
 422                            nlen, STR_UNICODE);
 423         if (volume_name == NULL) {
 424                 status = map_nt_error_from_unix(errno);
 425                 TALLOC_FREE(rdata);
 426                 return status;
 427         }
 428
 429         /* todo: but not yet needed
 430          *       return the other stuff
 431          */
 432
 433         *_volume_name = volume_name;
 434         TALLOC_FREE(rdata);
 435         return NT_STATUS_OK;
 436 }
 437
 438 NTSTATUS cli_get_fs_full_size_info(struct cli_state *cli,
 439                                    uint64_t *total_allocation_units,
 440                                    uint64_t *caller_allocation_units,
 441                                    uint64_t *actual_allocation_units,
 442                                    uint64_t *sectors_per_allocation_unit,
 443                                    uint64_t *bytes_per_sector)
 444 {
 445         uint16_t setup[1];
 446         uint8_t param[2];
 447         uint8_t *rdata = NULL;
 448         uint32_t rdata_count;
 449         NTSTATUS status;
 450
 451         if (smbXcli_conn_protocol(cli->conn) >= PROTOCOL_SMB2_02) {
 452                 return cli_smb2_get_fs_full_size_info(cli,
 453                                                 total_allocation_units,
 454                                                 caller_allocation_units,
 455                                                 actual_allocation_units,
 456                                                 sectors_per_allocation_unit,
 457                                                 bytes_per_sector);
 458         }
 459
 460         SSVAL(setup, 0, TRANSACT2_QFSINFO);
 461         SSVAL(param, 0, SMB_FS_FULL_SIZE_INFORMATION);
 462
 463         status = cli_trans(talloc_tos(), cli, SMBtrans2,
 464                            NULL, 0, 0, 0,
 465                            setup, 1, 0, /* setup */
 466                            param, 2, 0,  /* param */
 467                            NULL, 0, 560, /* data */
 468                            NULL,
 469                            NULL, 0, NULL, /* rsetup */
 470                            NULL, 0, NULL, /* rparam */
 471                            &rdata, 32, &rdata_count);  /* rdata */
 472         if (!NT_STATUS_IS_OK(status)) {
 473                 goto fail;
 474         }
 475
 476         if (total_allocation_units) {
 477                 *total_allocation_units = BIG_UINT(rdata, 0);
 478         }
 479         if (caller_allocation_units) {
 480                 *caller_allocation_units = BIG_UINT(rdata,8);
 481         }
 482         if (actual_allocation_units) {
 483                 *actual_allocation_units = BIG_UINT(rdata,16);
 484         }
 485         if (sectors_per_allocation_unit) {
 486                 *sectors_per_allocation_unit = IVAL(rdata,24);
 487         }
 488         if (bytes_per_sector) {
 489                 *bytes_per_sector = IVAL(rdata,28);
 490         }
 491
 492 fail:
 493         TALLOC_FREE(rdata);
 494         return status;
 495 }
 496
 497 NTSTATUS cli_get_posix_fs_info(struct cli_state *cli,
 498                                uint32_t *optimal_transfer_size,
 499                                uint32_t *block_size,
 500                                uint64_t *total_blocks,
 501                                uint64_t *blocks_available,
 502                                uint64_t *user_blocks_available,
 503                                uint64_t *total_file_nodes,
 504                                uint64_t *free_file_nodes,
 505                                uint64_t *fs_identifier)
 506 {
 507         uint16_t setup[1];
 508         uint8_t param[2];
 509         uint8_t *rdata = NULL;
 510         uint32_t rdata_count;
 511         NTSTATUS status;
 512
 513         SSVAL(setup, 0, TRANSACT2_QFSINFO);
 514         SSVAL(param,0,SMB_QUERY_POSIX_FS_INFO);
 515
 516         status = cli_trans(talloc_tos(), cli, SMBtrans2, NULL, 0, 0, 0,
 517                            setup, 1, 0,
 518                            param, 2, 0,
 519                            NULL, 0, 560,
 520                            NULL,
 521                            NULL, 0, NULL, /* rsetup */
 522                            NULL, 0, NULL, /* rparam */
 523                            &rdata, 56, &rdata_count);
 524         if (!NT_STATUS_IS_OK(status)) {
 525                 return status;
 526         }
 527
 528         if (optimal_transfer_size) {
 529                 *optimal_transfer_size = IVAL(rdata, 0);
 530         }
 531         if (block_size) {
 532                 *block_size = IVAL(rdata,4);
 533         }
 534         if (total_blocks) {
 535                 *total_blocks = BIG_UINT(rdata,8);
 536         }
 537         if (blocks_available) {
 538                 *blocks_available = BIG_UINT(rdata,16);
 539         }
 540         if (user_blocks_available) {
 541                 *user_blocks_available = BIG_UINT(rdata,24);
 542         }
 543         if (total_file_nodes) {
 544                 *total_file_nodes = BIG_UINT(rdata,32);
 545         }
 546         if (free_file_nodes) {
 547                 *free_file_nodes = BIG_UINT(rdata,40);
 548         }
 549         if (fs_identifier) {
 550                 *fs_identifier = BIG_UINT(rdata,48);
 551         }
 552         return NT_STATUS_OK;
 553 }
 554
 555 /****************************************************************************
 556  Do a UNIX extensions SMB_QUERY_POSIX_WHOAMI call.
 557 ****************************************************************************/
 558
 559 struct posix_whoami_state {
 560         uint16_t setup[1];
 561         uint8_t param[2];
 562         uint32_t max_rdata;
 563         bool guest;
 564         uint64_t uid;
 565         uint64_t gid;
 566         uint32_t num_gids;
 567         uint64_t *gids;
 568         uint32_t num_sids;
 569         struct dom_sid *sids;
 570 };
 571
 572 static void cli_posix_whoami_done(struct tevent_req *subreq);
 573
 574 struct tevent_req *cli_posix_whoami_send(TALLOC_CTX *mem_ctx,
 575                                         struct tevent_context *ev,
 576                                         struct cli_state *cli)
 577 {
 578         struct tevent_req *req = NULL, *subreq = NULL;
 579         struct posix_whoami_state *state = NULL;
 580
 581         req = tevent_req_create(mem_ctx, &state, struct posix_whoami_state);
 582         if (req == NULL) {
 583                 return NULL;
 584         }
 585
 586         /* Setup setup word. */
 587         SSVAL(state->setup, 0, TRANSACT2_QFSINFO);
 588         SSVAL(state->param, 0, SMB_QUERY_POSIX_WHOAMI);
 589
 590         state->max_rdata = 62*1024;
 591
 592         subreq = cli_trans_send(state,                  /* mem ctx. */
 593                                 ev,                     /* event ctx. */
 594                                 cli,                    /* cli_state. */
 595                                 0,                      /* additional_flags2 */
 596                                 SMBtrans2,              /* cmd. */
 597                                 NULL,                   /* pipe name. */
 598                                 -1,                     /* fid. */
 599                                 0,                      /* function. */
 600                                 0,                      /* flags. */
 601                                 state->setup,           /* setup. */
 602                                 1,                      /* num setup uint16_t words. */
 603                                 0,                      /* max returned setup. */
 604                                 state->param,           /* param. */
 605                                 2,                      /* num param. */
 606                                 0,                      /* max returned param. */
 607                                 NULL,                   /* data. */
 608                                 0,                      /* num data. */
 609                                 state->max_rdata);      /* max returned data. */
 610
 611         if (tevent_req_nomem(subreq, req)) {
 612                 return tevent_req_post(req, ev);
 613         }
 614         tevent_req_set_callback(subreq, cli_posix_whoami_done, req);
 615         return req;
 616 }
 617
 618 static void cli_posix_whoami_done(struct tevent_req *subreq)
 619 {
 620         struct tevent_req *req = tevent_req_callback_data(
 621                         subreq, struct tevent_req);
 622         struct posix_whoami_state *state = tevent_req_data(
 623                         req, struct posix_whoami_state);
 624         uint8_t *rdata = NULL;
 625         uint8_t *p = NULL;
 626         uint32_t num_rdata = 0;
 627         uint32_t i;
 628         NTSTATUS status;
 629
 630         status = cli_trans_recv(subreq,
 631                                 state,
 632                                 NULL,
 633                                 NULL,
 634                                 0,
 635                                 NULL,
 636                                 NULL,
 637                                 0,
 638                                 NULL,
 639                                 &rdata,
 640                                 40,
 641                                 &num_rdata);
 642         TALLOC_FREE(subreq);
 643         if (tevent_req_nterror(req, status)) {
 644                 return;
 645         }
 646
 647         /*
 648          * Not strictly needed - cli_trans_recv()
 649          * will ensure at least 40 bytes here. Added
 650          * as more of a reminder to be careful when
 651          * parsing network packets in C.
 652          */
 653
 654         if (num_rdata < 40 || rdata + num_rdata < rdata) {
 655                 tevent_req_nterror(req, NT_STATUS_INVALID_NETWORK_RESPONSE);
 656                 return;
 657         }
 658
 659         state->guest = (IVAL(rdata, 0) & SMB_WHOAMI_GUEST);
 660         state->uid = BVAL(rdata, 8);
 661         state->gid = BVAL(rdata, 16);
 662         state->num_gids = IVAL(rdata, 24);
 663         state->num_sids = IVAL(rdata, 28);
 664
 665         state->gids = talloc_array(state, uint64_t, state->num_gids);
 666         if (tevent_req_nomem(state->gids, req)) {
 667                 return;
 668         }
 669         state->sids = talloc_array(state, struct dom_sid, state->num_sids);
 670         if (tevent_req_nomem(state->sids, req)) {
 671                 return;
 672         }
 673
 674         p = rdata + 40;
 675
 676         for (i = 0; i < state->num_gids; i++) {
 677                 if (p + 8 > rdata + num_rdata) {
 678                         tevent_req_nterror(req,
 679                                 NT_STATUS_INVALID_NETWORK_RESPONSE);
 680                         return;
 681                 }
 682                 state->gids[i] = BVAL(p, 0);
 683                 p += 8;
 684         }
 685
 686         num_rdata -= (p - rdata);
 687
 688         for (i = 0; i < state->num_sids; i++) {
 689                 ssize_t sid_size = sid_parse(p, num_rdata, &state->sids[i]);
 690
 691                 if ((sid_size == -1) || (sid_size > num_rdata)) {
 692                         tevent_req_nterror(req,
 693                                 NT_STATUS_INVALID_NETWORK_RESPONSE);
 694                         return;
 695                 }
 696
 697                 p += sid_size;
 698                 num_rdata -= sid_size;
 699         }
 700         tevent_req_done(req);
 701 }
 702
 703 NTSTATUS cli_posix_whoami_recv(struct tevent_req *req,
 704                         TALLOC_CTX *mem_ctx,
 705                         uint64_t *puid,
 706                         uint64_t *pgid,
 707                         uint32_t *pnum_gids,
 708                         uint64_t **pgids,
 709                         uint32_t *pnum_sids,
 710                         struct dom_sid **psids,
 711                         bool *pguest)
 712 {
 713         NTSTATUS status;
 714         struct posix_whoami_state *state = tevent_req_data(
 715                         req, struct posix_whoami_state);
 716
 717         if (tevent_req_is_nterror(req, &status)) {
 718                 return status;
 719         }
 720
 721         if (puid) {
 722                 *puid = state->uid;
 723         }
 724         if (pgid) {
 725                 *pgid = state->gid;
 726         }
 727         if (pnum_gids) {
 728                 *pnum_gids = state->num_gids;
 729         }
 730         if (pgids) {
 731                 *pgids = talloc_move(mem_ctx, &state->gids);
 732         }
 733         if (pnum_sids) {
 734                 *pnum_sids = state->num_sids;
 735         }
 736         if (psids) {
 737                 *psids = talloc_move(mem_ctx, &state->sids);
 738         }
 739         if (pguest) {
 740                 *pguest = state->guest;
 741         }
 742         return NT_STATUS_OK;
 743 }
 744
 745 NTSTATUS cli_posix_whoami(struct cli_state *cli,
 746                         TALLOC_CTX *mem_ctx,
 747                         uint64_t *puid,
 748                         uint64_t *pgid,
 749                         uint32_t *num_gids,
 750                         uint64_t **gids,
 751                         uint32_t *num_sids,
 752                         struct dom_sid **sids,
 753                         bool *pguest)
 754 {
 755         TALLOC_CTX *frame = talloc_stackframe();
 756         struct tevent_context *ev = NULL;
 757         struct tevent_req *req = NULL;
 758         NTSTATUS status = NT_STATUS_OK;
 759
 760         if (smbXcli_conn_has_async_calls(cli->conn)) {
 761                 /*
 762                  * Can't use sync call while an async call is in flight
 763                  */
 764                 status = NT_STATUS_INVALID_PARAMETER;
 765                 goto fail;
 766         }
 767
 768         ev = samba_tevent_context_init(frame);
 769         if (ev == NULL) {
 770                 status = NT_STATUS_NO_MEMORY;
 771                 goto fail;
 772         }
 773
 774         req = cli_posix_whoami_send(frame,
 775                                 ev,
 776                                 cli);
 777         if (req == NULL) {
 778                 status = NT_STATUS_NO_MEMORY;
 779                 goto fail;
 780         }
 781
 782         if (!tevent_req_poll_ntstatus(req, ev, &status)) {
 783                 goto fail;
 784         }
 785
 786         status = cli_posix_whoami_recv(req,
 787                         mem_ctx,
 788                         puid,
 789                         pgid,
 790                         num_gids,
 791                         gids,
 792                         num_sids,
 793                         sids,
 794                         pguest);
 795
 796  fail:
 797         TALLOC_FREE(frame);
 798         return status;
 799 }