source3/smbd/smb2_setinfo.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3    Core SMB2 server
   4
   5    Copyright (C) Stefan Metzmacher 2009
   6    Copyright (C) Jeremy Allison 2010
   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 "smbd/smbd.h"
  24 #include "smbd/globals.h"
  25 #include "../libcli/smb/smb_common.h"
  26 #include "trans2.h"
  27 #include "../lib/util/tevent_ntstatus.h"
  28 #include "../librpc/gen_ndr/open_files.h"
  29 #include "source3/lib/dbwrap/dbwrap_watch.h"
  30 #include "messages.h"
  31 #include "librpc/gen_ndr/ndr_quota.h"
  32
  33 #undef DBGC_CLASS
  34 #define DBGC_CLASS DBGC_SMB2
  35
  36 static struct tevent_req *smbd_smb2_setinfo_send(TALLOC_CTX *mem_ctx,
  37                                                  struct tevent_context *ev,
  38                                                  struct smbd_smb2_request *smb2req,
  39                                                  struct files_struct *in_fsp,
  40                                                  uint8_t in_info_type,
  41                                                  uint8_t in_file_info_class,
  42                                                  DATA_BLOB in_input_buffer,
  43                                                  uint32_t in_additional_information);
  44 static NTSTATUS smbd_smb2_setinfo_recv(struct tevent_req *req);
  45
  46 static void smbd_smb2_request_setinfo_done(struct tevent_req *subreq);
  47 NTSTATUS smbd_smb2_request_process_setinfo(struct smbd_smb2_request *req)
  48 {
  49         struct smbXsrv_connection *xconn = req->xconn;
  50         NTSTATUS status;
  51         const uint8_t *inbody;
  52         uint8_t in_info_type;
  53         uint8_t in_file_info_class;
  54         uint16_t in_input_buffer_offset;
  55         uint32_t in_input_buffer_length;
  56         DATA_BLOB in_input_buffer;
  57         uint32_t in_additional_information;
  58         uint64_t in_file_id_persistent;
  59         uint64_t in_file_id_volatile;
  60         struct files_struct *in_fsp;
  61         struct tevent_req *subreq;
  62
  63         status = smbd_smb2_request_verify_sizes(req, 0x21);
  64         if (!NT_STATUS_IS_OK(status)) {
  65                 return smbd_smb2_request_error(req, status);
  66         }
  67         inbody = SMBD_SMB2_IN_BODY_PTR(req);
  68
  69         in_info_type                    = CVAL(inbody, 0x02);
  70         in_file_info_class              = CVAL(inbody, 0x03);
  71         in_input_buffer_length          = IVAL(inbody, 0x04);
  72         in_input_buffer_offset          = SVAL(inbody, 0x08);
  73         /* 0x0A 2 bytes reserved */
  74         in_additional_information       = IVAL(inbody, 0x0C);
  75         in_file_id_persistent           = BVAL(inbody, 0x10);
  76         in_file_id_volatile             = BVAL(inbody, 0x18);
  77
  78         if (in_input_buffer_offset == 0 && in_input_buffer_length == 0) {
  79                 /* This is ok */
  80         } else if (in_input_buffer_offset !=
  81                    (SMB2_HDR_BODY + SMBD_SMB2_IN_BODY_LEN(req))) {
  82                 return smbd_smb2_request_error(req, NT_STATUS_INVALID_PARAMETER);
  83         }
  84
  85         if (in_input_buffer_length > SMBD_SMB2_IN_DYN_LEN(req)) {
  86                 return smbd_smb2_request_error(req, NT_STATUS_INVALID_PARAMETER);
  87         }
  88
  89         in_input_buffer.data = SMBD_SMB2_IN_DYN_PTR(req);
  90         in_input_buffer.length = in_input_buffer_length;
  91
  92         if (in_input_buffer.length > xconn->smb2.server.max_trans) {
  93                 DEBUG(2,("smbd_smb2_request_process_setinfo: "
  94                          "client ignored max trans: %s: 0x%08X: 0x%08X\n",
  95                          __location__, (unsigned)in_input_buffer.length,
  96                          (unsigned)xconn->smb2.server.max_trans));
  97                 return smbd_smb2_request_error(req, NT_STATUS_INVALID_PARAMETER);
  98         }
  99
 100         status = smbd_smb2_request_verify_creditcharge(req,
 101                                                 in_input_buffer.length);
 102         if (!NT_STATUS_IS_OK(status)) {
 103                 return smbd_smb2_request_error(req, status);
 104         }
 105
 106         in_fsp = file_fsp_smb2(req, in_file_id_persistent, in_file_id_volatile);
 107         if (in_fsp == NULL) {
 108                 return smbd_smb2_request_error(req, NT_STATUS_FILE_CLOSED);
 109         }
 110
 111         subreq = smbd_smb2_setinfo_send(req, req->ev_ctx,
 112                                         req, in_fsp,
 113                                         in_info_type,
 114                                         in_file_info_class,
 115                                         in_input_buffer,
 116                                         in_additional_information);
 117         if (subreq == NULL) {
 118                 return smbd_smb2_request_error(req, NT_STATUS_NO_MEMORY);
 119         }
 120         tevent_req_set_callback(subreq, smbd_smb2_request_setinfo_done, req);
 121
 122         return smbd_smb2_request_pending_queue(req, subreq, 500);
 123 }
 124
 125 static void smbd_smb2_request_setinfo_done(struct tevent_req *subreq)
 126 {
 127         struct smbd_smb2_request *req = tevent_req_callback_data(subreq,
 128                                         struct smbd_smb2_request);
 129         DATA_BLOB outbody;
 130         NTSTATUS status;
 131         NTSTATUS error; /* transport error */
 132
 133         status = smbd_smb2_setinfo_recv(subreq);
 134         TALLOC_FREE(subreq);
 135         if (!NT_STATUS_IS_OK(status)) {
 136                 error = smbd_smb2_request_error(req, status);
 137                 if (!NT_STATUS_IS_OK(error)) {
 138                         smbd_server_connection_terminate(req->xconn,
 139                                                          nt_errstr(error));
 140                         return;
 141                 }
 142                 return;
 143         }
 144
 145         outbody = smbd_smb2_generate_outbody(req, 0x02);
 146         if (outbody.data == NULL) {
 147                 error = smbd_smb2_request_error(req, NT_STATUS_NO_MEMORY);
 148                 if (!NT_STATUS_IS_OK(error)) {
 149                         smbd_server_connection_terminate(req->xconn,
 150                                                          nt_errstr(error));
 151                         return;
 152                 }
 153                 return;
 154         }
 155
 156         SSVAL(outbody.data, 0x00, 0x02);        /* struct size */
 157
 158         error = smbd_smb2_request_done(req, outbody, NULL);
 159         if (!NT_STATUS_IS_OK(error)) {
 160                 smbd_server_connection_terminate(req->xconn,
 161                                                  nt_errstr(error));
 162                 return;
 163         }
 164 }
 165
 166 struct defer_rename_state {
 167         struct tevent_req *req;
 168         struct smbd_smb2_request *smb2req;
 169         struct tevent_context *ev;
 170         struct files_struct *fsp;
 171         char *data;
 172         int data_size;
 173 };
 174
 175 static int defer_rename_state_destructor(struct defer_rename_state *rename_state)
 176 {
 177         SAFE_FREE(rename_state->data);
 178         return 0;
 179 }
 180
 181 static void defer_rename_done(struct tevent_req *subreq);
 182
 183 static struct tevent_req *delay_rename_for_lease_break(struct tevent_req *req,
 184                                 struct smbd_smb2_request *smb2req,
 185                                 struct tevent_context *ev,
 186                                 struct files_struct *fsp,
 187                                 struct share_mode_lock *lck,
 188                                 char *data,
 189                                 int data_size)
 190
 191 {
 192         struct tevent_req *subreq;
 193         uint32_t i;
 194         struct share_mode_data *d = lck->data;
 195         struct defer_rename_state *rename_state;
 196         bool delay = false;
 197         struct timeval timeout;
 198
 199         if (fsp->oplock_type != LEASE_OPLOCK) {
 200                 return NULL;
 201         }
 202
 203         for (i=0; i<d->num_share_modes; i++) {
 204                 struct share_mode_entry *e = &d->share_modes[i];
 205                 struct share_mode_lease *l = NULL;
 206                 uint32_t e_lease_type = get_lease_type(d, e);
 207                 uint32_t break_to;
 208
 209                 if (e->op_type != LEASE_OPLOCK) {
 210                         continue;
 211                 }
 212
 213                 l = &d->leases[e->lease_idx];
 214
 215                 if (smb2_lease_equal(fsp_client_guid(fsp),
 216                                 &fsp->lease->lease.lease_key,
 217                                 &l->client_guid,
 218                                 &l->lease_key)) {
 219                         continue;
 220                 }
 221
 222                 if (share_mode_stale_pid(d, i)) {
 223                         continue;
 224                 }
 225
 226                 if (!(e_lease_type & SMB2_LEASE_HANDLE)) {
 227                         continue;
 228                 }
 229
 230                 delay = true;
 231                 break_to = (e_lease_type & ~SMB2_LEASE_HANDLE);
 232
 233                 send_break_message(fsp->conn->sconn->msg_ctx, &fsp->file_id,
 234                                    e, break_to);
 235         }
 236
 237         if (!delay) {
 238                 return NULL;
 239         }
 240
 241         /* Setup a watch on this record. */
 242         rename_state = talloc_zero(req, struct defer_rename_state);
 243         if (rename_state == NULL) {
 244                 return NULL;
 245         }
 246
 247         rename_state->req = req;
 248         rename_state->smb2req = smb2req;
 249         rename_state->ev = ev;
 250         rename_state->fsp = fsp;
 251         rename_state->data = data;
 252         rename_state->data_size = data_size;
 253
 254         talloc_set_destructor(rename_state, defer_rename_state_destructor);
 255
 256         subreq = dbwrap_watched_watch_send(
 257                                 rename_state,
 258                                 ev,
 259                                 lck->data->record,
 260                                 (struct server_id){0});
 261
 262         if (subreq == NULL) {
 263                 exit_server("Could not watch share mode record for rename\n");
 264         }
 265
 266         tevent_req_set_callback(subreq, defer_rename_done, rename_state);
 267
 268         timeout = timeval_set(OPLOCK_BREAK_TIMEOUT*2, 0);
 269         if (!tevent_req_set_endtime(subreq,
 270                         ev,
 271                         timeval_sum(&smb2req->request_time, &timeout))) {
 272                 exit_server("Could not set rename timeout\n");
 273         }
 274
 275         return subreq;
 276 }
 277
 278 static void defer_rename_done(struct tevent_req *subreq)
 279 {
 280         struct defer_rename_state *state = tevent_req_callback_data(
 281                 subreq, struct defer_rename_state);
 282         NTSTATUS status;
 283         struct share_mode_lock *lck;
 284         int ret_size = 0;
 285
 286         status = dbwrap_watched_watch_recv(subreq, NULL, NULL);
 287         TALLOC_FREE(subreq);
 288         if (!NT_STATUS_IS_OK(status)) {
 289                 DEBUG(5, ("dbwrap_record_watch_recv returned %s\n",
 290                         nt_errstr(status)));
 291                 tevent_req_nterror(state->req, status);
 292                 return;
 293         }
 294
 295         /* Do we still need to wait ? */
 296         lck = get_existing_share_mode_lock(state->req, state->fsp->file_id);
 297         if (lck == NULL) {
 298                 tevent_req_nterror(state->req, NT_STATUS_UNSUCCESSFUL);
 299                 return;
 300         }
 301         subreq = delay_rename_for_lease_break(state->req,
 302                                 state->smb2req,
 303                                 state->ev,
 304                                 state->fsp,
 305                                 lck,
 306                                 state->data,
 307                                 state->data_size);
 308         if (subreq) {
 309                 /* Yep - keep waiting. */
 310                 state->data = NULL;
 311                 TALLOC_FREE(state);
 312                 TALLOC_FREE(lck);
 313                 return;
 314         }
 315
 316         /* Do the rename under the lock. */
 317         status = smbd_do_setfilepathinfo(state->fsp->conn,
 318                                 state->smb2req->smb1req,
 319                                 state,
 320                                 SMB2_FILE_RENAME_INFORMATION_INTERNAL,
 321                                 state->fsp,
 322                                 state->fsp->fsp_name,
 323                                 &state->data,
 324                                 state->data_size,
 325                                 &ret_size);
 326
 327         TALLOC_FREE(lck);
 328         SAFE_FREE(state->data);
 329
 330         if (!NT_STATUS_IS_OK(status)) {
 331                 tevent_req_nterror(state->req, status);
 332                 return;
 333         }
 334
 335         tevent_req_done(state->req);
 336 }
 337
 338 struct smbd_smb2_setinfo_state {
 339         struct smbd_smb2_request *smb2req;
 340 };
 341
 342 static struct tevent_req *smbd_smb2_setinfo_send(TALLOC_CTX *mem_ctx,
 343                                                  struct tevent_context *ev,
 344                                                  struct smbd_smb2_request *smb2req,
 345                                                  struct files_struct *fsp,
 346                                                  uint8_t in_info_type,
 347                                                  uint8_t in_file_info_class,
 348                                                  DATA_BLOB in_input_buffer,
 349                                                  uint32_t in_additional_information)
 350 {
 351         struct tevent_req *req = NULL;
 352         struct smbd_smb2_setinfo_state *state = NULL;
 353         struct smb_request *smbreq = NULL;
 354         connection_struct *conn = smb2req->tcon->compat;
 355         struct share_mode_lock *lck = NULL;
 356         NTSTATUS status;
 357
 358         req = tevent_req_create(mem_ctx, &state,
 359                                 struct smbd_smb2_setinfo_state);
 360         if (req == NULL) {
 361                 return NULL;
 362         }
 363         state->smb2req = smb2req;
 364
 365         DEBUG(10,("smbd_smb2_setinfo_send: %s - %s\n",
 366                   fsp_str_dbg(fsp), fsp_fnum_dbg(fsp)));
 367
 368         smbreq = smbd_smb2_fake_smb_request(smb2req);
 369         if (tevent_req_nomem(smbreq, req)) {
 370                 return tevent_req_post(req, ev);
 371         }
 372
 373         if (IS_IPC(conn)) {
 374                 tevent_req_nterror(req, NT_STATUS_NOT_SUPPORTED);
 375                 return tevent_req_post(req, ev);
 376         }
 377
 378         switch (in_info_type) {
 379         case 0x01:/* SMB2_SETINFO_FILE */
 380         {
 381                 uint16_t file_info_level;
 382                 char *data;
 383                 int data_size;
 384                 int ret_size = 0;
 385
 386
 387                 file_info_level = in_file_info_class + 1000;
 388                 if (file_info_level == SMB_FILE_RENAME_INFORMATION) {
 389                         /* SMB2_FILE_RENAME_INFORMATION_INTERNAL == 0xFF00 + in_file_info_class */
 390                         file_info_level = SMB2_FILE_RENAME_INFORMATION_INTERNAL;
 391                 }
 392
 393                 if (fsp->fh->fd == -1) {
 394                         /*
 395                          * This is actually a SETFILEINFO on a directory
 396                          * handle (returned from an NT SMB). NT5.0 seems
 397                          * to do this call. JRA.
 398                          */
 399                         if (INFO_LEVEL_IS_UNIX(file_info_level)) {
 400                                 /* Always do lstat for UNIX calls. */
 401                                 if (SMB_VFS_LSTAT(conn, fsp->fsp_name)) {
 402                                         DEBUG(3,("smbd_smb2_setinfo_send: "
 403                                                  "SMB_VFS_LSTAT of %s failed "
 404                                                  "(%s)\n", fsp_str_dbg(fsp),
 405                                                  strerror(errno)));
 406                                         status = map_nt_error_from_unix(errno);
 407                                         tevent_req_nterror(req, status);
 408                                         return tevent_req_post(req, ev);
 409                                 }
 410                         } else {
 411                                 if (SMB_VFS_STAT(conn, fsp->fsp_name) != 0) {
 412                                         DEBUG(3,("smbd_smb2_setinfo_send: "
 413                                                  "fileinfo of %s failed (%s)\n",
 414                                                  fsp_str_dbg(fsp),
 415                                                  strerror(errno)));
 416                                         status = map_nt_error_from_unix(errno);
 417                                         tevent_req_nterror(req, status);
 418                                         return tevent_req_post(req, ev);
 419                                 }
 420                         }
 421                 } else if (fsp->print_file) {
 422                         /*
 423                          * Doing a DELETE_ON_CLOSE should cancel a print job.
 424                          */
 425                         if ((file_info_level == SMB_SET_FILE_DISPOSITION_INFO)
 426                             && in_input_buffer.length >= 1
 427                             && CVAL(in_input_buffer.data,0)) {
 428                                 fsp->fh->private_options |= NTCREATEX_OPTIONS_PRIVATE_DELETE_ON_CLOSE;
 429
 430                                 DEBUG(3,("smbd_smb2_setinfo_send: "
 431                                          "Cancelling print job (%s)\n",
 432                                          fsp_str_dbg(fsp)));
 433
 434                                 tevent_req_done(req);
 435                                 return tevent_req_post(req, ev);
 436                         } else {
 437                                 tevent_req_nterror(req,
 438                                         NT_STATUS_OBJECT_PATH_INVALID);
 439                                 return tevent_req_post(req, ev);
 440                         }
 441                 } else {
 442                         /*
 443                          * Original code - this is an open file.
 444                          */
 445
 446                         if (SMB_VFS_FSTAT(fsp, &fsp->fsp_name->st) != 0) {
 447                                 DEBUG(3,("smbd_smb2_setinfo_send: fstat "
 448                                          "of %s failed (%s)\n",
 449                                          fsp_fnum_dbg(fsp),
 450                                          strerror(errno)));
 451                                 status = map_nt_error_from_unix(errno);
 452                                 tevent_req_nterror(req, status);
 453                                 return tevent_req_post(req, ev);
 454                         }
 455                 }
 456
 457                 data = NULL;
 458                 data_size = in_input_buffer.length;
 459                 if (data_size > 0) {
 460                         data = (char *)SMB_MALLOC_ARRAY(char, data_size);
 461                         if (tevent_req_nomem(data, req)) {
 462                                 return tevent_req_post(req, ev);
 463                         }
 464                         memcpy(data, in_input_buffer.data, data_size);
 465                 }
 466
 467                 if (file_info_level == SMB2_FILE_RENAME_INFORMATION_INTERNAL) {
 468                         struct tevent_req *subreq;
 469
 470                         lck = get_existing_share_mode_lock(mem_ctx,
 471                                                         fsp->file_id);
 472                         if (lck == NULL) {
 473                                 SAFE_FREE(data);
 474                                 tevent_req_nterror(req,
 475                                         NT_STATUS_UNSUCCESSFUL);
 476                                 return tevent_req_post(req, ev);
 477                         }
 478
 479                         subreq = delay_rename_for_lease_break(req,
 480                                                         smb2req,
 481                                                         ev,
 482                                                         fsp,
 483                                                         lck,
 484                                                         data,
 485                                                         data_size);
 486                         if (subreq) {
 487                                 /* Wait for lease break response. */
 488
 489                                 /* Ensure we can't be closed in flight. */
 490                                 if (!aio_add_req_to_fsp(fsp, req)) {
 491                                         TALLOC_FREE(lck);
 492                                         tevent_req_nterror(req, NT_STATUS_NO_MEMORY);
 493                                         return tevent_req_post(req, ev);
 494                                 }
 495
 496                                 TALLOC_FREE(lck);
 497                                 return req;
 498                         }
 499                 }
 500
 501                 status = smbd_do_setfilepathinfo(conn, smbreq, state,
 502                                                  file_info_level,
 503                                                  fsp,
 504                                                  fsp->fsp_name,
 505                                                  &data,
 506                                                  data_size,
 507                                                  &ret_size);
 508                 TALLOC_FREE(lck);
 509                 SAFE_FREE(data);
 510                 if (!NT_STATUS_IS_OK(status)) {
 511                         if (NT_STATUS_EQUAL(status, NT_STATUS_INVALID_LEVEL)) {
 512                                 status = NT_STATUS_INVALID_INFO_CLASS;
 513                         }
 514                         tevent_req_nterror(req, status);
 515                         return tevent_req_post(req, ev);
 516                 }
 517                 break;
 518         }
 519
 520         case 0x02:/* SMB2_SETINFO_FS */
 521         {
 522                 uint16_t file_info_level = in_file_info_class + 1000;
 523
 524                 status = smbd_do_setfsinfo(conn, smbreq, state,
 525                                         file_info_level,
 526                                         fsp,
 527                                         &in_input_buffer);
 528                 if (!NT_STATUS_IS_OK(status)) {
 529                         if (NT_STATUS_EQUAL(status, NT_STATUS_INVALID_LEVEL)) {
 530                                 status = NT_STATUS_INVALID_INFO_CLASS;
 531                         }
 532                         tevent_req_nterror(req, status);
 533                         return tevent_req_post(req, ev);
 534                 }
 535                 break;
 536         }
 537
 538         case 0x03:/* SMB2_SETINFO_SECURITY */
 539         {
 540                 if (!CAN_WRITE(conn)) {
 541                         tevent_req_nterror(req, NT_STATUS_ACCESS_DENIED);
 542                         return tevent_req_post(req, ev);
 543                 }
 544
 545                 status = set_sd_blob(fsp,
 546                                 in_input_buffer.data,
 547                                 in_input_buffer.length,
 548                                 in_additional_information &
 549                                 SMB_SUPPORTED_SECINFO_FLAGS);
 550                 if (!NT_STATUS_IS_OK(status)) {
 551                         tevent_req_nterror(req, status);
 552                         return tevent_req_post(req, ev);
 553                 }
 554                 break;
 555         }
 556
 557         case 0x04:/* SMB2_SETINFO_QUOTA */
 558         {
 559 #ifdef HAVE_SYS_QUOTAS
 560                 struct file_quota_information info = {0};
 561                 SMB_NTQUOTA_STRUCT qt = {0};
 562                 enum ndr_err_code err;
 563                 int ret;
 564
 565                 if (!fsp->fake_file_handle) {
 566                         tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 567                         return tevent_req_post(req, ev);
 568                 }
 569                 err = ndr_pull_struct_blob(
 570                         &in_input_buffer, state, &info,
 571                         (ndr_pull_flags_fn_t)ndr_pull_file_quota_information);
 572                 if (!NDR_ERR_CODE_IS_SUCCESS(err)) {
 573                         tevent_req_nterror(req, NT_STATUS_UNSUCCESSFUL);
 574                         return tevent_req_post(req, ev);
 575                 }
 576
 577                 qt.usedspace = info.quota_used;
 578
 579                 qt.softlim = info.quota_threshold;
 580
 581                 qt.hardlim = info.quota_limit;
 582
 583                 qt.sid = info.sid;
 584                 ret = vfs_set_ntquota(fsp, SMB_USER_QUOTA_TYPE, &qt.sid, &qt);
 585                 if (ret !=0 ) {
 586                         status = map_nt_error_from_unix(errno);
 587                         tevent_req_nterror(req, status);
 588                         return tevent_req_post(req, ev);
 589                 }
 590                 status = NT_STATUS_OK;
 591                 break;
 592 #else
 593                 tevent_req_nterror(req, NT_STATUS_NOT_SUPPORTED);
 594                 return tevent_req_post(req, ev);
 595 #endif
 596         }
 597         default:
 598                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 599                 return tevent_req_post(req, ev);
 600         }
 601
 602         tevent_req_done(req);
 603         return tevent_req_post(req, ev);
 604 }
 605
 606 static NTSTATUS smbd_smb2_setinfo_recv(struct tevent_req *req)
 607 {
 608         NTSTATUS status;
 609
 610         if (tevent_req_is_nterror(req, &status)) {
 611                 tevent_req_received(req);
 612                 return status;
 613         }
 614
 615         tevent_req_received(req);
 616         return NT_STATUS_OK;
 617 }