source3/smbd/smb2_query_directory.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3    Core SMB2 server
   4
   5    Copyright (C) Stefan Metzmacher 2009
   6
   7    This program is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License as published by
   9    the Free Software Foundation; either version 3 of the License, or
  10    (at your option) any later version.
  11
  12    This program is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15    GNU General Public License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  19 */
  20
  21 #include "includes.h"
  22 #include "smbd/smbd.h"
  23 #include "smbd/globals.h"
  24 #include "../libcli/smb/smb_common.h"
  25 #include "trans2.h"
  26 #include "../lib/util/tevent_ntstatus.h"
  27 #include "system/filesys.h"
  28
  29 static struct tevent_req *smbd_smb2_query_directory_send(TALLOC_CTX *mem_ctx,
  30                                               struct tevent_context *ev,
  31                                               struct smbd_smb2_request *smb2req,
  32                                               struct files_struct *in_fsp,
  33                                               uint8_t in_file_info_class,
  34                                               uint8_t in_flags,
  35                                               uint32_t in_file_index,
  36                                               uint32_t in_output_buffer_length,
  37                                               const char *in_file_name);
  38 static NTSTATUS smbd_smb2_query_directory_recv(struct tevent_req *req,
  39                                     TALLOC_CTX *mem_ctx,
  40                                     DATA_BLOB *out_output_buffer);
  41
  42 static void smbd_smb2_request_find_done(struct tevent_req *subreq);
  43 NTSTATUS smbd_smb2_request_process_query_directory(struct smbd_smb2_request *req)
  44 {
  45         NTSTATUS status;
  46         const uint8_t *inbody;
  47         uint8_t in_file_info_class;
  48         uint8_t in_flags;
  49         uint32_t in_file_index;
  50         uint64_t in_file_id_persistent;
  51         uint64_t in_file_id_volatile;
  52         struct files_struct *in_fsp;
  53         uint16_t in_file_name_offset;
  54         uint16_t in_file_name_length;
  55         DATA_BLOB in_file_name_buffer;
  56         char *in_file_name_string;
  57         size_t in_file_name_string_size;
  58         uint32_t in_output_buffer_length;
  59         struct tevent_req *subreq;
  60         bool ok;
  61
  62         status = smbd_smb2_request_verify_sizes(req, 0x21);
  63         if (!NT_STATUS_IS_OK(status)) {
  64                 return smbd_smb2_request_error(req, status);
  65         }
  66         inbody = SMBD_SMB2_IN_BODY_PTR(req);
  67
  68         in_file_info_class              = CVAL(inbody, 0x02);
  69         in_flags                        = CVAL(inbody, 0x03);
  70         in_file_index                   = IVAL(inbody, 0x04);
  71         in_file_id_persistent           = BVAL(inbody, 0x08);
  72         in_file_id_volatile             = BVAL(inbody, 0x10);
  73         in_file_name_offset             = SVAL(inbody, 0x18);
  74         in_file_name_length             = SVAL(inbody, 0x1A);
  75         in_output_buffer_length         = IVAL(inbody, 0x1C);
  76
  77         if (in_file_name_offset == 0 && in_file_name_length == 0) {
  78                 /* This is ok */
  79         } else if (in_file_name_offset !=
  80                    (SMB2_HDR_BODY + SMBD_SMB2_IN_BODY_LEN(req))) {
  81                 return smbd_smb2_request_error(req, NT_STATUS_INVALID_PARAMETER);
  82         }
  83
  84         if (in_file_name_length > SMBD_SMB2_IN_DYN_LEN(req)) {
  85                 return smbd_smb2_request_error(req, NT_STATUS_INVALID_PARAMETER);
  86         }
  87
  88         /* The output header is 8 bytes. */
  89         if (in_output_buffer_length <= 8) {
  90                 return smbd_smb2_request_error(req, NT_STATUS_INVALID_PARAMETER);
  91         }
  92
  93         DEBUG(10,("smbd_smb2_request_find_done: in_output_buffer_length = %u\n",
  94                 (unsigned int)in_output_buffer_length ));
  95
  96         /* Take into account the output header. */
  97         in_output_buffer_length -= 8;
  98
  99         in_file_name_buffer.data = SMBD_SMB2_IN_DYN_PTR(req);
 100         in_file_name_buffer.length = in_file_name_length;
 101
 102         ok = convert_string_talloc(req, CH_UTF16, CH_UNIX,
 103                                    in_file_name_buffer.data,
 104                                    in_file_name_buffer.length,
 105                                    &in_file_name_string,
 106                                    &in_file_name_string_size);
 107         if (!ok) {
 108                 return smbd_smb2_request_error(req, NT_STATUS_ILLEGAL_CHARACTER);
 109         }
 110
 111         if (in_file_name_buffer.length == 0) {
 112                 in_file_name_string_size = 0;
 113         }
 114
 115         if (strlen(in_file_name_string) != in_file_name_string_size) {
 116                 return smbd_smb2_request_error(req, NT_STATUS_OBJECT_NAME_INVALID);
 117         }
 118
 119         in_fsp = file_fsp_smb2(req, in_file_id_persistent, in_file_id_volatile);
 120         if (in_fsp == NULL) {
 121                 return smbd_smb2_request_error(req, NT_STATUS_FILE_CLOSED);
 122         }
 123
 124         subreq = smbd_smb2_query_directory_send(req, req->sconn->ev_ctx,
 125                                      req, in_fsp,
 126                                      in_file_info_class,
 127                                      in_flags,
 128                                      in_file_index,
 129                                      in_output_buffer_length,
 130                                      in_file_name_string);
 131         if (subreq == NULL) {
 132                 return smbd_smb2_request_error(req, NT_STATUS_NO_MEMORY);
 133         }
 134         tevent_req_set_callback(subreq, smbd_smb2_request_find_done, req);
 135
 136         return smbd_smb2_request_pending_queue(req, subreq, 500);
 137 }
 138
 139 static void smbd_smb2_request_find_done(struct tevent_req *subreq)
 140 {
 141         struct smbd_smb2_request *req = tevent_req_callback_data(subreq,
 142                                         struct smbd_smb2_request);
 143         DATA_BLOB outbody;
 144         DATA_BLOB outdyn;
 145         uint16_t out_output_buffer_offset;
 146         DATA_BLOB out_output_buffer = data_blob_null;
 147         NTSTATUS status;
 148         NTSTATUS error; /* transport error */
 149
 150         status = smbd_smb2_query_directory_recv(subreq,
 151                                      req,
 152                                      &out_output_buffer);
 153         TALLOC_FREE(subreq);
 154         if (!NT_STATUS_IS_OK(status)) {
 155                 error = smbd_smb2_request_error(req, status);
 156                 if (!NT_STATUS_IS_OK(error)) {
 157                         smbd_server_connection_terminate(req->xconn,
 158                                                          nt_errstr(error));
 159                         return;
 160                 }
 161                 return;
 162         }
 163
 164         out_output_buffer_offset = SMB2_HDR_BODY + 0x08;
 165
 166         outbody = smbd_smb2_generate_outbody(req, 0x08);
 167         if (outbody.data == NULL) {
 168                 error = smbd_smb2_request_error(req, NT_STATUS_NO_MEMORY);
 169                 if (!NT_STATUS_IS_OK(error)) {
 170                         smbd_server_connection_terminate(req->xconn,
 171                                                          nt_errstr(error));
 172                         return;
 173                 }
 174                 return;
 175         }
 176
 177         SSVAL(outbody.data, 0x00, 0x08 + 1);    /* struct size */
 178         SSVAL(outbody.data, 0x02,
 179               out_output_buffer_offset);        /* output buffer offset */
 180         SIVAL(outbody.data, 0x04,
 181               out_output_buffer.length);        /* output buffer length */
 182
 183         DEBUG(10,("smbd_smb2_request_find_done: out_output_buffer.length = %u\n",
 184                 (unsigned int)out_output_buffer.length ));
 185
 186         outdyn = out_output_buffer;
 187
 188         error = smbd_smb2_request_done(req, outbody, &outdyn);
 189         if (!NT_STATUS_IS_OK(error)) {
 190                 smbd_server_connection_terminate(req->xconn,
 191                                                  nt_errstr(error));
 192                 return;
 193         }
 194 }
 195
 196 static struct tevent_req *fetch_write_time_send(TALLOC_CTX *mem_ctx,
 197                                                 struct tevent_context *ev,
 198                                                 connection_struct *conn,
 199                                                 struct file_id id,
 200                                                 int info_level,
 201                                                 char *entry_marshall_buf,
 202                                                 bool *stop);
 203 static NTSTATUS fetch_write_time_recv(struct tevent_req *req);
 204
 205
 206 struct smbd_smb2_query_directory_state {
 207         struct tevent_context *ev;
 208         struct smbd_smb2_request *smb2req;
 209         uint64_t async_count;
 210         uint32_t find_async_delay_usec;
 211         DATA_BLOB out_output_buffer;
 212 };
 213
 214 static void smb2_query_directory_fetch_write_time_done(struct tevent_req *subreq);
 215 static void smb2_query_directory_waited(struct tevent_req *subreq);
 216
 217 static struct tevent_req *smbd_smb2_query_directory_send(TALLOC_CTX *mem_ctx,
 218                                               struct tevent_context *ev,
 219                                               struct smbd_smb2_request *smb2req,
 220                                               struct files_struct *fsp,
 221                                               uint8_t in_file_info_class,
 222                                               uint8_t in_flags,
 223                                               uint32_t in_file_index,
 224                                               uint32_t in_output_buffer_length,
 225                                               const char *in_file_name)
 226 {
 227         struct smbXsrv_connection *xconn = smb2req->xconn;
 228         struct tevent_req *req;
 229         struct smbd_smb2_query_directory_state *state;
 230         struct smb_request *smbreq;
 231         connection_struct *conn = smb2req->tcon->compat;
 232         NTSTATUS status;
 233         NTSTATUS empty_status;
 234         uint32_t info_level;
 235         uint32_t max_count;
 236         char *pdata;
 237         char *base_data;
 238         char *end_data;
 239         int last_entry_off = 0;
 240         int off = 0;
 241         uint32_t num = 0;
 242         uint32_t dirtype = FILE_ATTRIBUTE_HIDDEN | FILE_ATTRIBUTE_SYSTEM | FILE_ATTRIBUTE_DIRECTORY;
 243         bool dont_descend = false;
 244         bool ask_sharemode = false;
 245         bool async_ask_sharemode = false;
 246         bool wcard_has_wild = false;
 247         struct tm tm;
 248         char *p;
 249
 250         req = tevent_req_create(mem_ctx, &state,
 251                                 struct smbd_smb2_query_directory_state);
 252         if (req == NULL) {
 253                 return NULL;
 254         }
 255         state->ev = ev;
 256         state->smb2req = smb2req;
 257         state->out_output_buffer = data_blob_null;
 258
 259         DEBUG(10,("smbd_smb2_query_directory_send: %s - %s\n",
 260                   fsp_str_dbg(fsp), fsp_fnum_dbg(fsp)));
 261
 262         smbreq = smbd_smb2_fake_smb_request(smb2req);
 263         if (tevent_req_nomem(smbreq, req)) {
 264                 return tevent_req_post(req, ev);
 265         }
 266
 267         if (!fsp->is_directory) {
 268                 tevent_req_nterror(req, NT_STATUS_NOT_SUPPORTED);
 269                 return tevent_req_post(req, ev);
 270         }
 271
 272         if (strcmp(in_file_name, "") == 0) {
 273                 tevent_req_nterror(req, NT_STATUS_OBJECT_NAME_INVALID);
 274                 return tevent_req_post(req, ev);
 275         }
 276         if (strchr_m(in_file_name, '\\') != NULL) {
 277                 tevent_req_nterror(req, NT_STATUS_OBJECT_NAME_INVALID);
 278                 return tevent_req_post(req, ev);
 279         }
 280         if (strchr_m(in_file_name, '/') != NULL) {
 281                 tevent_req_nterror(req, NT_STATUS_OBJECT_NAME_INVALID);
 282                 return tevent_req_post(req, ev);
 283         }
 284
 285         p = strptime(in_file_name, GMT_FORMAT, &tm);
 286         if ((p != NULL) && (*p =='\0')) {
 287                 /*
 288                  * Bogus find that asks for a shadow copy timestamp as a
 289                  * directory. The correct response is that it does not exist as
 290                  * a directory.
 291                  */
 292                 tevent_req_nterror(req, NT_STATUS_NO_SUCH_FILE);
 293                 return tevent_req_post(req, ev);
 294         }
 295
 296         if (in_output_buffer_length > xconn->smb2.server.max_trans) {
 297                 DEBUG(2,("smbd_smb2_query_directory_send: "
 298                          "client ignored max trans:%s: 0x%08X: 0x%08X\n",
 299                          __location__, in_output_buffer_length,
 300                          xconn->smb2.server.max_trans));
 301                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 302                 return tevent_req_post(req, ev);
 303         }
 304
 305         status = smbd_smb2_request_verify_creditcharge(smb2req,
 306                                         in_output_buffer_length);
 307
 308         if (!NT_STATUS_IS_OK(status)) {
 309                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 310                 return tevent_req_post(req, ev);
 311         }
 312
 313         switch (in_file_info_class) {
 314         case SMB2_FIND_DIRECTORY_INFO:
 315                 info_level = SMB_FIND_FILE_DIRECTORY_INFO;
 316                 break;
 317
 318         case SMB2_FIND_FULL_DIRECTORY_INFO:
 319                 info_level = SMB_FIND_FILE_FULL_DIRECTORY_INFO;
 320                 break;
 321
 322         case SMB2_FIND_BOTH_DIRECTORY_INFO:
 323                 info_level = SMB_FIND_FILE_BOTH_DIRECTORY_INFO;
 324                 break;
 325
 326         case SMB2_FIND_NAME_INFO:
 327                 info_level = SMB_FIND_FILE_NAMES_INFO;
 328                 break;
 329
 330         case SMB2_FIND_ID_BOTH_DIRECTORY_INFO:
 331                 info_level = SMB_FIND_ID_BOTH_DIRECTORY_INFO;
 332                 break;
 333
 334         case SMB2_FIND_ID_FULL_DIRECTORY_INFO:
 335                 info_level = SMB_FIND_ID_FULL_DIRECTORY_INFO;
 336                 break;
 337
 338         default:
 339                 tevent_req_nterror(req, NT_STATUS_INVALID_INFO_CLASS);
 340                 return tevent_req_post(req, ev);
 341         }
 342
 343         if (in_flags & SMB2_CONTINUE_FLAG_REOPEN) {
 344                 int flags;
 345
 346                 dptr_CloseDir(fsp);
 347
 348                 /*
 349                  * dptr_CloseDir() will close and invalidate the fsp's file
 350                  * descriptor, we have to reopen it.
 351                  */
 352
 353                 flags = O_RDONLY;
 354 #ifdef O_DIRECTORY
 355                 flags |= O_DIRECTORY;
 356 #endif
 357                 status = fd_open(conn, fsp, flags, 0);
 358                 if (tevent_req_nterror(req, status)) {
 359                         return tevent_req_post(req, ev);
 360                 }
 361         }
 362
 363         if (!smbreq->posix_pathnames) {
 364                 wcard_has_wild = ms_has_wild(in_file_name);
 365         }
 366
 367         /* Ensure we've canonicalized any search path if not a wildcard. */
 368         if (!wcard_has_wild) {
 369                 struct smb_filename *smb_fname = NULL;
 370                 const char *fullpath;
 371                 char tmpbuf[PATH_MAX];
 372                 char *to_free = NULL;
 373                 uint32_t ucf_flags = UCF_SAVE_LCOMP |
 374                                      UCF_ALWAYS_ALLOW_WCARD_LCOMP |
 375                                      (smbreq->posix_pathnames ?
 376                                         UCF_POSIX_PATHNAMES : 0);
 377
 378                 if (ISDOT(fsp->fsp_name->base_name)) {
 379                         fullpath = in_file_name;
 380                 } else {
 381                         size_t len;
 382                         char *tmp;
 383
 384                         len = full_path_tos(
 385                                 fsp->fsp_name->base_name, in_file_name,
 386                                 tmpbuf, sizeof(tmpbuf), &tmp, &to_free);
 387                         if (len == -1) {
 388                                 tevent_req_oom(req);
 389                                 return tevent_req_post(req, ev);
 390                         }
 391                         fullpath = tmp;
 392                 }
 393                 status = filename_convert(state,
 394                                 conn,
 395                                 false, /* Not a DFS path. */
 396                                 fullpath,
 397                                 ucf_flags,
 398                                 &wcard_has_wild,
 399                                 &smb_fname);
 400
 401                 TALLOC_FREE(to_free);
 402
 403                 if (tevent_req_nterror(req, status)) {
 404                         return tevent_req_post(req, ev);
 405                 }
 406
 407                 in_file_name = smb_fname->original_lcomp;
 408         }
 409
 410         if (fsp->dptr == NULL) {
 411                 status = dptr_create(conn,
 412                                      NULL, /* req */
 413                                      fsp,
 414                                      fsp->fsp_name,
 415                                      false, /* old_handle */
 416                                      false, /* expect_close */
 417                                      0, /* spid */
 418                                      in_file_name, /* wcard */
 419                                      wcard_has_wild,
 420                                      dirtype,
 421                                      &fsp->dptr);
 422                 if (!NT_STATUS_IS_OK(status)) {
 423                         tevent_req_nterror(req, status);
 424                         return tevent_req_post(req, ev);
 425                 }
 426
 427                 empty_status = NT_STATUS_NO_SUCH_FILE;
 428         } else {
 429                 empty_status = STATUS_NO_MORE_FILES;
 430         }
 431
 432         if (in_flags & SMB2_CONTINUE_FLAG_RESTART) {
 433                 dptr_SeekDir(fsp->dptr, 0);
 434         }
 435
 436         if (in_flags & SMB2_CONTINUE_FLAG_SINGLE) {
 437                 max_count = 1;
 438         } else {
 439                 max_count = UINT16_MAX;
 440         }
 441
 442 #define DIR_ENTRY_SAFETY_MARGIN 4096
 443
 444         state->out_output_buffer = data_blob_talloc(state, NULL,
 445                         in_output_buffer_length + DIR_ENTRY_SAFETY_MARGIN);
 446         if (tevent_req_nomem(state->out_output_buffer.data, req)) {
 447                 return tevent_req_post(req, ev);
 448         }
 449
 450         state->out_output_buffer.length = 0;
 451         pdata = (char *)state->out_output_buffer.data;
 452         base_data = pdata;
 453         /*
 454          * end_data must include the safety margin as it's what is
 455          * used to determine if pushed strings have been truncated.
 456          */
 457         end_data = pdata + in_output_buffer_length + DIR_ENTRY_SAFETY_MARGIN - 1;
 458         last_entry_off = 0;
 459         off = 0;
 460         num = 0;
 461
 462         DEBUG(8,("smbd_smb2_query_directory_send: dirpath=<%s> dontdescend=<%s>, "
 463                 "in_output_buffer_length = %u\n",
 464                 fsp->fsp_name->base_name, lp_dont_descend(talloc_tos(), SNUM(conn)),
 465                 (unsigned int)in_output_buffer_length ));
 466         if (in_list(fsp->fsp_name->base_name,lp_dont_descend(talloc_tos(), SNUM(conn)),
 467                         conn->case_sensitive)) {
 468                 dont_descend = true;
 469         }
 470
 471         /*
 472          * SMB_FIND_FILE_NAMES_INFO doesn't need stat information
 473          *
 474          * This may change when we try to improve the delete on close
 475          * handling in future.
 476          */
 477         if (info_level != SMB_FIND_FILE_NAMES_INFO) {
 478                 ask_sharemode = lp_parm_bool(SNUM(conn),
 479                                              "smbd", "search ask sharemode",
 480                                              true);
 481         }
 482
 483         if (ask_sharemode && lp_clustering()) {
 484                 ask_sharemode = false;
 485                 async_ask_sharemode = true;
 486
 487                 /*
 488                  * Should we only set async_internal
 489                  * if we're not the last request in
 490                  * a compound chain?
 491                  */
 492                 smb2_request_set_async_internal(smb2req, true);
 493         }
 494
 495         /*
 496          * This gets set in autobuild for some tests
 497          */
 498         state->find_async_delay_usec = lp_parm_ulong(SNUM(conn), "smbd",
 499                                                      "find async delay usec",
 500                                                      0);
 501
 502         while (true) {
 503                 bool got_exact_match = false;
 504                 int space_remaining = in_output_buffer_length - off;
 505                 int cur_off = off;
 506                 struct file_id file_id;
 507                 bool stop = false;
 508
 509                 SMB_ASSERT(space_remaining >= 0);
 510
 511                 status = smbd_dirptr_lanman2_entry(state,
 512                                                conn,
 513                                                fsp->dptr,
 514                                                smbreq->flags2,
 515                                                in_file_name,
 516                                                dirtype,
 517                                                info_level,
 518                                                false, /* requires_resume_key */
 519                                                dont_descend,
 520                                                ask_sharemode,
 521                                                8, /* align to 8 bytes */
 522                                                false, /* no padding */
 523                                                &pdata,
 524                                                base_data,
 525                                                end_data,
 526                                                space_remaining,
 527                                                &got_exact_match,
 528                                                &last_entry_off,
 529                                                NULL,
 530                                                &file_id);
 531
 532                 off = (int)PTR_DIFF(pdata, base_data);
 533
 534                 if (!NT_STATUS_IS_OK(status)) {
 535                         if (NT_STATUS_EQUAL(status, NT_STATUS_ILLEGAL_CHARACTER)) {
 536                                 /*
 537                                  * Bad character conversion on name. Ignore this
 538                                  * entry.
 539                                  */
 540                                 continue;
 541                         } else if (num > 0) {
 542                                 goto last_entry_done;
 543                         } else if (NT_STATUS_EQUAL(status, STATUS_MORE_ENTRIES)) {
 544                                 tevent_req_nterror(req, NT_STATUS_INFO_LENGTH_MISMATCH);
 545                                 return tevent_req_post(req, ev);
 546                         } else {
 547                                 tevent_req_nterror(req, empty_status);
 548                                 return tevent_req_post(req, ev);
 549                         }
 550                 }
 551
 552                 if (async_ask_sharemode) {
 553                         struct tevent_req *subreq = NULL;
 554
 555                         subreq = fetch_write_time_send(req,
 556                                                        ev,
 557                                                        conn,
 558                                                        file_id,
 559                                                        info_level,
 560                                                        base_data + cur_off,
 561                                                        &stop);
 562                         if (tevent_req_nomem(subreq, req)) {
 563                                 return tevent_req_post(req, ev);
 564                         }
 565                         tevent_req_set_callback(
 566                                 subreq,
 567                                 smb2_query_directory_fetch_write_time_done,
 568                                 req);
 569
 570                         state->async_count++;
 571                 }
 572
 573                 num++;
 574                 state->out_output_buffer.length = off;
 575
 576                 if (num >= max_count) {
 577                         stop = true;
 578                 }
 579
 580                 if (!stop) {
 581                         continue;
 582                 }
 583
 584 last_entry_done:
 585                 SIVAL(state->out_output_buffer.data, last_entry_off, 0);
 586                 if (state->async_count > 0) {
 587                         DBG_DEBUG("Stopping after %zu async mtime updates\n",
 588                                   state->async_count);
 589                         return req;
 590                 }
 591
 592                 if (state->find_async_delay_usec > 0) {
 593                         struct timeval tv;
 594                         struct tevent_req *subreq = NULL;
 595
 596                         /*
 597                          * Should we only set async_internal
 598                          * if we're not the last request in
 599                          * a compound chain?
 600                          */
 601                         smb2_request_set_async_internal(smb2req, true);
 602
 603                         tv = timeval_current_ofs(0, state->find_async_delay_usec);
 604
 605                         subreq = tevent_wakeup_send(state, ev, tv);
 606                         if (tevent_req_nomem(subreq, req)) {
 607                                 return tevent_req_post(req, ev);
 608                         }
 609                         tevent_req_set_callback(subreq,
 610                                                 smb2_query_directory_waited,
 611                                                 req);
 612                         return req;
 613                 }
 614
 615                 tevent_req_done(req);
 616                 return tevent_req_post(req, ev);
 617         }
 618
 619         tevent_req_nterror(req, NT_STATUS_INTERNAL_ERROR);
 620         return tevent_req_post(req, ev);
 621 }
 622
 623 static void smb2_query_directory_fetch_write_time_done(struct tevent_req *subreq)
 624 {
 625         struct tevent_req *req = tevent_req_callback_data(
 626                 subreq, struct tevent_req);
 627         struct smbd_smb2_query_directory_state *state = tevent_req_data(
 628                 req, struct smbd_smb2_query_directory_state);
 629         NTSTATUS status;
 630
 631         state->async_count--;
 632
 633         status = fetch_write_time_recv(subreq);
 634         TALLOC_FREE(subreq);
 635         if (tevent_req_nterror(req, status)) {
 636                 return;
 637         }
 638
 639         if (state->async_count > 0) {
 640                 return;
 641         }
 642
 643         if (state->find_async_delay_usec > 0) {
 644                 struct timeval tv;
 645
 646                 tv = timeval_current_ofs(0, state->find_async_delay_usec);
 647
 648                 subreq = tevent_wakeup_send(state, state->ev, tv);
 649                 if (tevent_req_nomem(subreq, req)) {
 650                         tevent_req_post(req, state->ev);
 651                         return;
 652                 }
 653                 tevent_req_set_callback(subreq,
 654                                         smb2_query_directory_waited,
 655                                         req);
 656                 return;
 657         }
 658
 659         tevent_req_done(req);
 660         return;
 661 }
 662
 663 static void smb2_query_directory_waited(struct tevent_req *subreq)
 664 {
 665         struct tevent_req *req = tevent_req_callback_data(
 666                 subreq, struct tevent_req);
 667         bool ok;
 668
 669         ok = tevent_wakeup_recv(subreq);
 670         TALLOC_FREE(subreq);
 671         if (!ok) {
 672                 tevent_req_oom(req);
 673                 return;
 674         }
 675         tevent_req_done(req);
 676 }
 677
 678 static NTSTATUS smbd_smb2_query_directory_recv(struct tevent_req *req,
 679                                     TALLOC_CTX *mem_ctx,
 680                                     DATA_BLOB *out_output_buffer)
 681 {
 682         NTSTATUS status;
 683         struct smbd_smb2_query_directory_state *state = tevent_req_data(req,
 684                                              struct smbd_smb2_query_directory_state);
 685
 686         if (tevent_req_is_nterror(req, &status)) {
 687                 tevent_req_received(req);
 688                 return status;
 689         }
 690
 691         *out_output_buffer = state->out_output_buffer;
 692         talloc_steal(mem_ctx, out_output_buffer->data);
 693
 694         tevent_req_received(req);
 695         return NT_STATUS_OK;
 696 }
 697
 698 struct fetch_write_time_state {
 699         connection_struct *conn;
 700         struct file_id id;
 701         int info_level;
 702         char *entry_marshall_buf;
 703 };
 704
 705 static void fetch_write_time_done(struct tevent_req *subreq);
 706
 707 static struct tevent_req *fetch_write_time_send(TALLOC_CTX *mem_ctx,
 708                                                 struct tevent_context *ev,
 709                                                 connection_struct *conn,
 710                                                 struct file_id id,
 711                                                 int info_level,
 712                                                 char *entry_marshall_buf,
 713                                                 bool *stop)
 714 {
 715         struct tevent_req *req = NULL;
 716         struct fetch_write_time_state *state = NULL;
 717         struct tevent_req *subreq = NULL;
 718         bool req_queued;
 719
 720         *stop = false;
 721
 722         req = tevent_req_create(mem_ctx, &state, struct fetch_write_time_state);
 723         if (req == NULL) {
 724                 return NULL;
 725         }
 726
 727         *state = (struct fetch_write_time_state) {
 728                 .conn = conn,
 729                 .id = id,
 730                 .info_level = info_level,
 731                 .entry_marshall_buf = entry_marshall_buf,
 732         };
 733
 734         subreq = fetch_share_mode_send(state, ev, id, &req_queued);
 735         if (tevent_req_nomem(subreq, req)) {
 736                 return tevent_req_post(req, ev);
 737         }
 738         tevent_req_set_callback(subreq, fetch_write_time_done, req);
 739
 740         if (req_queued) {
 741                 *stop = true;
 742         }
 743         return req;
 744 }
 745
 746 static void fetch_write_time_done(struct tevent_req *subreq)
 747 {
 748         struct tevent_req *req = tevent_req_callback_data(
 749                 subreq, struct tevent_req);
 750         struct fetch_write_time_state *state = tevent_req_data(
 751                 req, struct fetch_write_time_state);
 752         struct timespec write_time;
 753         struct share_mode_lock *lck = NULL;
 754         NTSTATUS status;
 755         size_t off;
 756
 757         status = fetch_share_mode_recv(subreq, state, &lck);
 758         TALLOC_FREE(subreq);
 759         if (NT_STATUS_EQUAL(status, NT_STATUS_NOT_FOUND)) {
 760                 tevent_req_done(req);
 761                 return;
 762         }
 763         if (!NT_STATUS_IS_OK(status)) {
 764                 tevent_req_nterror(req, status);
 765                 return;
 766         }
 767
 768         write_time = get_share_mode_write_time(lck);
 769         TALLOC_FREE(lck);
 770
 771         if (null_timespec(write_time)) {
 772                 tevent_req_done(req);
 773                 return;
 774         }
 775
 776         switch (state->info_level) {
 777         case SMB_FIND_FILE_DIRECTORY_INFO:
 778         case SMB_FIND_FILE_FULL_DIRECTORY_INFO:
 779         case SMB_FIND_FILE_BOTH_DIRECTORY_INFO:
 780         case SMB_FIND_ID_FULL_DIRECTORY_INFO:
 781         case SMB_FIND_ID_BOTH_DIRECTORY_INFO:
 782                 off = 24;
 783                 break;
 784
 785         default:
 786                 DBG_ERR("Unsupported info_level [%d]\n", state->info_level);
 787                 tevent_req_nterror(req, NT_STATUS_INVALID_LEVEL);
 788                 return;
 789         }
 790
 791         put_long_date_timespec(state->conn->ts_res,
 792                                state->entry_marshall_buf + off,
 793                                write_time);
 794
 795         tevent_req_done(req);
 796         return;
 797 }
 798
 799 static NTSTATUS fetch_write_time_recv(struct tevent_req *req)
 800 {
 801         NTSTATUS status;
 802
 803         if (tevent_req_is_nterror(req, &status)) {
 804                 tevent_req_received(req);
 805                 return status;
 806         }
 807
 808         tevent_req_received(req);
 809         return NT_STATUS_OK;
 810 }